Materiāls ：
poliestera filtra maiss ir izgatavots no 100% poliestera šķiedru pavediena, pēc tam, kad ir caurdurts adats, sakausēts siltuma iestatīšanas kalendārs neapstrādātam poliestera filtra filca materiālam, pēc tam poliestera filtra filtru var sašūt poliestera filtra maisiņos.

Pieejamā apdare: saķepināta, kalendārs, termiski iestatīta PTFE membrāna, W / O, antistatiska apstrāde.

Priekšrocības:
Poliestera maisa filtri Pārrāvuma pagarinājums ir mazāks par 20% MD un 40% CMD, ar zemu sausu saraušanos, tas var labi darboties 130 ° C temperatūrā. Materiāls ir lētāks nekā cits materiāls, tāpēc to plaši izmanto daudzās somu māju sistēmās.

500 gm poliestera adatas perforēts filcs + ūdens un eļļas atbaidītājs
Būvniecība	Adatu filcs
Šķiedru sastāvs	Poliesters
Scrim sastāvs	Poliesters
Filca laukuma svars	500g / m2 (± 5%)
Biezums	1.8-1.9mm
Vidējā gaisa caurlaidība	10-15 m3/m2/min@12.7mmH2O
Bremzēšanas stiprums-MD arp velku）	900 N / 5cm
Pārrāvuma spēks-CMD （audi）	1300 N / 5cm
Pārrāvuma pagarinājums (N / 5cm) -MD arp velku）	20%
Pārrāvuma pagarinājums (N / 5cm) -CMD （audi）	40%
Sausā saraušanās MD （130 ℃ šķēru）	＜ 1.5%
Sausa saraušanās CMD （130 ℃ audi）	＜ 1.5%
Darbtemperatūra	<130 ° C
Ieteicamais maksimālais nepārtrauktais	130 ° C
Ieteicamais maksimālais pārspriegums	150 ° C
apdare	Siltuma komplekts, dziedēts, kalendārs ar W / O repelentu

1. darba temperatūra 150 grādi c,
2. maksimālais pārspriegums ir 150 grādi c.
3. laba pretskābe, laba pretsārma, laba hidrolīzes stabilitāte
4. Vidējā gaisa caurlaidība: 10-15 m3/m2/min@12.7mmH2O
5. Tas ir lētākais filtrēšanas līdzeklis maisu filtru filtrēšanas laukā. Poliestera maisa filtrs ir populārākās preces maisu māju sistēmā.   

Poliestera filtru maiss, ko plaši izmanto raktuvēs, kaļķakmens, cementa, dzelzs un tērauda rūpniecībā, alumīnija oksīda piegādē, elektrolītiskā alumīnija, krāsaino metālu ražošanā, kokapstrādē, pārtikas pārstrādē un farmācijas nozarē.

 

Mine -- Matching dust collector of filter bag

The polyester filter bag is mainly used in the dust remover of the stone factory, the bag dust remover of the stone factory, the dust remover of the vibrating screen of the mine, the dust remover of the crushing system of the mine and the dust remover of the mine.

1.Dust catcher of stone factory

The dust remover of shizichang has a new type of dust remover with the first selection level, which combines the advantages of the dust remover with the chamber back blowing and pulse blowing, fully overcomes the disadvantages of the poor intensity of the chamber back blowing and the simultaneous operation of the pulse blowing and filtering, and expands the application scope of the sub bag dust remover. Due to the particularity of the structure of the dust collector in the quarry, the dust removal efficiency is greatly improved and the service life of the filter bag of the equipment is prolonged. It is a kind of bag dust collector with excellent performance. Widely used in building materials, cement, metallurgy, mining plants and refractory industry.

The dust remover of the stone factory has the advantages of simple structure, low investment cost, simple and reliable operation, and low technical requirements for management and maintenance. The dust remover of stone factory has the characteristics of small resistance, high dust removal efficiency, large air volume, stable performance, small floor area, simple structure, practical and cheap. After the dust containing gas enters from the upper air inlet of the ash hopper, under the action of the wind deflector, the air flow moves in the direction and the flow rate decreases. Part of the large particle dust is separated and falls into the ash hopper due to the action of inertia force.

The dust remover of the stone factory has the advantages of simple structure, low investment cost, simple and reliable operation, and low technical requirements for management and maintenance.

Due to the particularity of the structure of the dust collector in the quarry, the dust removal efficiency is greatly improved and the service life of the filter bag of the equipment is prolonged. It is a kind of bag dust collector with excellent performance. Widely used in building materials, cement, metallurgy, mining plants and refractory industry.

 

2.Bag type dust collector in quarry

Bag filter in stone plant is a kind of round shell type dust collector with large air volume, good ash cleaning effect, high dust removal efficiency, reliable operation, convenient maintenance and small floor area.
1. The dust collector in quarry consists of upper box, middle box, ash hopper, support, filter bag assembly, anti blowing and cleaning mechanism, ash discharge valve, etc.
2. Dust collection and filtration system: mainly composed of filter bag, bag cage, flower board assembly, ash hopper and tangential air inlet system.
3. Ash cleaning and ash discharging system: high pressure fan, rotary reverse blowing pipe, deceleration motor.
4. Electronic control system: automatic control system.

The bag filter in stone plant is a round shell, which can shorten the length of the dust collector and facilitate the arrangement. It is equipped with a ash hopper.
For the body, we design the strength with unfavorable load combination; make use of Q235A plate.
The filter bag specification is φ 260 series. The upper end of the filter bag adopts rubber pad pressing plate, which has good sealing performance and convenient and fast bag changing. Each filter bag is equipped with a carbon steel bag cage.
The controller adopts two forms of automatic and manual exchange.
In order to ensure the bag filter and operation, each dust collector is also equipped with a filter bag leakage detection hole.
The dust containing gas enters the upper space of the filter chamber in a tangential direction. Under the centrifugal force of large particles and condensed dust particles, small particles of ash hopper are scattered in the space between the bags of the filter room along the wall of the cylinder, which is blocked by the bag. The purified air is collected in the cleaning room through the bag guide on the flower board through the bag guide port on the bag wall, and is inhaled by the fan and discharged into the atmosphere.


Characteristics of bag filter in stone plant:
1. The flow pattern design of shell cyclone can play a local role in cyclone and reduce the load of filter bag. The shape of the cylinder vault is uniform.
2. The high pressure fan with equipment is used to blow back and clean the ash, which is not limited by the air source conditions in the use situation. The vulnerable parts are few, the maintenance is simple and reliable, and the disadvantages of pulse ash cleaning of compressed air are overcome. The long filter bag can be used for the long air blowing with large distance of anti blowing, which makes full use of space and occupies a small area.
3. The trapezoidal flat bag is used in bag filter of stone factory, which has a large amplitude, and it can shake off dust accumulation only once, which is conducive to improving the bag life.
4. The bag filter in the stone plant automatically controls the rotary back blowing ash cleaning, and automatically adjusts the ash cleaning cycle according to the inlet concentration. Compared with the timing control method, it is reasonable and reliable.

 

3.Dust collector of mine vibrating screen

Mine vibrating screen dust remover, also known as gravel filter, is a kind of dust purification equipment mainly used in vibrating screen operation, which deals with the pollution caused by vibrating screen during vibration. At present, vibrating screen dust remover has been widely used in mining, building materials, grain, chemical industry, casting, ceramics and other industries, and is a relatively bag dust collector or material collection equipment.



Working principle of mine vibrating screen dust collector:
A large amount of dust is generated during the work of vibrating screen. When the vibrating screen dust remover starts to work, the centrifugal fan of the dust remover forms a negative pressure area at the dust overflow place, and the dust containing gas is inhaled into the dust collector. There are several filter bags in the dust collector. When the dust containing gas passes through the filter bag, the dust is blocked and separated, and the purified gas is discharged through the fan. When the dust on the surface of the filter bag increases and the cutter resistance value reaches the predetermined value, the pressure sensor sends the indicator signal to the electric control box. The pulse blowing system controlled by PLC automatically sprays the filter bag automatically, and the dust attached to the filter bag is shaken off, and the sealed ash discharge pipe directly reaches the belt. That is, the filter bag is always kept good filtration performance, and no secondary dust is generated. According to the work of vibrating screen and the actual situation on site, the design and installation of dust removal device are carried out, and the problems such as overhaul and screen changing of vibrating screen are fully considered.


Main features of mine vibrating screen dust collector:
1. The investment in one time is small, and compared with other dust collectors, it can be operated for 2 months and the investment cost will be recovered.
2. It is suitable for dust removal of vibrating screen system of coal, sinter and ore.
3. The dust remover is controlled by PLC automatically, and it is stable and reliable.
4. The dust recovered by the dust collector is directly returned to the bin or belt without secondary pollution, saving human and material resources and recycling raw materials.
5. The power consumption is small, and the operation and management cost is low.
6. According to the nature and temperature of the material, different materials of filter material are selected to ensure the dust removal effect and service life.
7. The dust collector has no land occupation.
8. The purification efficiency is high, which meets the requirements of environmental protection index, and solves the problem of dust pollution of vibrating screen.

 

4.Dust collector of mine crushing system

The dust collector of mine crushing system is mainly composed of upper and lower boxes, ash hopper, ash discharging device, filtering device, injection device, induced draft fan and other main components. It has the advantages of large dust treatment, good purification effect, reliable operation, saving installation space and simple daily maintenance. It is used together with hammer crusher, jaw crusher and impact crusher.

The dust collector of mine crushing system is used in the crushing system of the mine to solve the problem of excessive dust and serious pollution in the process of crushing, separation and transportation of ore by machine. The dust collector of the crusher is installed with dust collection device at the dust point, and the dust is sucked into the dust collector box of the crusher through negative pressure for purification treatment, so as to separate the dust from the clean air.

The dust collector of mine crushing system uses centrifugal fan to produce negative pressure area at the dust sealing cover, and inhales the dust into the dust removal equipment. The pulse bag filter is equipped with dust removal cloth bag. When the dust gas passes through the filter bag, the dust is blocked and separated, and the purified gas is discharged through the fan. The dust on the surface of the filter bag is injected by the electromagnetic pulse valve to make it fall off the filter bag. The compressed air injection is automatically controlled by PLC without human control, which is one of its major characteristics. Pulse bag filter is not only used in crushing, but also used in dust control of various industries. It has achieved good dust removal effect and reached the design requirements. It is an ideal dust removal equipment at present.

The main characteristics of the dust collector of the mine crushing system are as follows
1. The advantages of the counter blowing and pulse blowing dust collectors in the collecting and separating chamber are that the unit volume treatment air volume is large, the system resistance is small, and the dust removal efficiency is high;
2. It can directly deal with other dust with dust concentration up to 200g / Nm3, and the other emission concentration after treatment is lower than 50mg / Nm3. It can also meet the stricter emission requirements according to the special needs of users;
3. It is used for dust removal in pulverized coal system. According to the properties of pulverized coal, dust bag and explosion-proof measures are adopted.

 

5.Mine dust collector

The mine dust collector is used to deal with the crushing of the mine. The working environment and atmospheric environment are seriously polluted due to the dust emission in the process of piercing, drilling, blasting, shipping, crushing and so on. In dry rock drilling without dust control measures, the dust concentration of working face can reach hundreds or thousands of milligrams per meter. When there is no dust prevention measures in underground crushing chamber, the dust concentration can reach several thousand milligrams per meter. The mine dust collector should be suitable for the characteristics of the mine. It is required to be simple in structure, small and compact in size, easy to move, moisture-proof and durable. When the comprehensive dust control measures adopted in each working procedure still fail to meet the requirements, it is necessary to take personal protection.

Mine dust collector is a kind of round shell dust collector with large air volume, good dust removal effect, high dust removal efficiency, reliable operation, convenient maintenance and small floor area.
1. The dust remover is composed of upper box, middle box, ash hopper, support, filter bag component, back blowing ash cleaning mechanism, ash unloading valve, etc.
2. Dust collection and filtration system: mainly composed of filter bag, bag cage, flower board components, ash hopper and tangential air inlet system.
3. Ash cleaning and unloading system: high pressure fan, rotary reverse blow pipe, reducer motor.
4. Electric control system: automatic control system.

The mine dust collector adopts the sinking air inlet mode to avoid the secondary dust pollution, and adopts the gravity separation principle to improve the filtering effect. The cartridge filter material dust collector has large filtering area and small air cloth ratio, which greatly saves the design area. The dust collector has the standardized and modular design. The equipment is easy to expand and easy to install on site. The cartridge filter dust collector is designed with high-pressure air pulse back washing. The filter material cleaning effect is good and the service life of the filter material is prolonged. The cartridge filter dust collector has small operation pressure loss resistance and can reduce the power of the exhaust fan. Furthermore, it can reduce the operation cost, shorten the exchange time of cartridge filter material, and do not need any manual tools with format material filter material. It can collect various kinds of pollution dust with fine particle size, cohesiveness, fiber, chemistry, electrification and high temperature. The dust collector can clean and discharge dust automatically.

Dust prevention of mine crushing: on the basis of airtight equipment, the combined measures of wet dust prevention and mechanical dust removal can be adopted for the dust generated by various crushing equipment. The purification equipment of mechanical dust removal adopts bag type dust collector or wet type dust collector. Wet dust collector should be selected for dust removal of underground crushing chamber. When the exhaust air of dust removal system can not be discharged to return air roadway or ground, but can only be discharged locally, the exhaust air shall be treated by filter.

Mine perforation dust prevention: a large amount of dust is produced during the operation of the open-pit drilling rig. Measures such as air-water mixed wet rock drilling inside the hole, dry dust catching outside the hole and wet dust catching can be adopted. Because of the high initial dust concentration, two-stage purification of cyclone and bag filter is needed.

Mine dust remover is suitable for all kinds of dust gas, with high-quality filter materials, such as dust, acid, alkali, etc. The air inlet with round shell and spiral line can bear high pressure. The dust removal efficiency of the mine dust collector is as high as, and the accessories such as the electromagnetic valve with a long service life of 3 million times are adopted to perfect the self purification and dust cleaning system. Generally, it can be used at room temperature below 120 ℃, and it can also provide high-temperature equipment below 250 ℃. The equipment can be made of carbon steel or stainless steel. Our company can provide special design and one-stop turnkey engineering for special needs of users.

 

 

Metal Smelting--Dedusting equipment in smelting industry

In metal smelting, polyester filter bag is mainly used for steel slag bag filter, steel sintering machine filter, steel blast furnace gas filter and steel plant filter.

1.Bag filter for steel slag

The steel slag bag type dust collector comprises an air inlet, an air duct, an inclined baffle plate of the air duct, a filter bag and an ash hopper, which is characterized in that the dust collector is also provided with a guide plate and an inverted V-shaped plate, the guide plate is arranged at the middle lower part of the air duct, the inverted V-shaped plate is arranged at the right lower part of the air duct, and the lower ends of the guide plate and the inverted V-shaped plate are connected with the ash hopper, The upper end of the deflector is connected with the bag room of the dust collector. A quartz emery layer is coated on one side of the inclined baffle plate of the air duct in direct contact with the flue gas. Compared with the prior art, the utility model has the advantages of scientific and simple structure and long service life.

A group of opposite side walls of the steel slag bag filter box body are respectively provided with an air inlet and an air outlet, the air outlet is connected with the air extraction port of the blower, and a filter bag is longitudinally arranged in the box body; The box body is connected in series in the same row, and the middle part of the connecting wall of the adjacent box body is provided with an air vent; The pore size of the filter bag in each box is different. The pore size from the air inlet side to the air outlet side decreases in turn. The particles in the steel slag dust can be quickly separated step by step, and the separation efficiency is high.

The dust removal effect of bag filter for steel slag is as follows

The dust removal effect of steel slag bag filter is related to many factors, but mainly depends on the filter material. The filter material of bag filter is cloth or felt made of synthetic fiber, fiber or glass fiber. If necessary, sew the cloth or felt into a cylinder or flat filter bag. According to the nature of flue gas, the filter material suitable for application conditions is selected.

Advantages of bag filter for steel slag

Generally, when the flue gas temperature is lower than 120 ℃, the filter material is required to have acid resistance and durability; In the treatment of high temperature flue gas (< 250℃ ) Graphitized glass fiber cloth is mainly used; In some special cases, carbon fiber filter material is selected. In the case of coal and iron stone, explosion-proof treatment is also needed, so the filter material of silk should be selected for the dust removal bag.

 

2.Dust collector of iron and steel sintering machine

The dust collector of iron and steel sintering machine is an ideal dust removal equipment to solve the problem of dust containing flue gas at the end of sintering machine. According to the characteristics of large exhaust volume, high gas temperature and high dust concentration at the end of sintering machine in sintering plant, when selecting the dust collector system for sintering machine, it is analyzed according to different conditions of sintering machine, so as to achieve better dust removal effect of bag filter.

Performance characteristics of dust collector of iron and steel sintering machine:
1. The upper part of the bag is used to change the bag.
2. Perfect control system to ensure the long-term operation of dust removal system.
3. Compact inlet and outlet duct and equalizing device, low airflow resistance.
4. The bag can be changed without stopping the machine, and the normal operation of the equipment will not be affected by the maintenance.
5. The application of pulse blowing with air stopping in separate chamber can prolong the cleaning cycle and reduce the consumption, which can double the service life of filter bag and pulse valve.
6. The box body is designed with air tightness, good sealing performance, and the inspection door is made of excellent sealing material. The production process uses kerosene to detect leakage, with low air leakage rate.
7. The application of pulse injection cleaning technology has strong cleaning capacity, high dust removal efficiency, low emission concentration, small air leakage coefficient, low energy consumption, small steel consumption, small floor area, stable and reliable operation and good economic benefits. It is suitable for flue gas treatment in electric power, building materials, metallurgy, chemical industry and other industries.

The dust remover of iron and steel sintering machine is widely used in the flue gas treatment of electric power, building materials, metallurgy, chemical industry and other industries, especially for the flue gas with big storm and high temperature. It combines the characteristics of chamber back blowing and pulse cleaning, overcomes the shortcomings of ordinary chamber back blowing intensity and general pulse cleaning dust re adsorption, and the lengthened dust removal filter bag gives full play to the strong cleaning effect of compressed air. It is a large dust removal equipment with high dust removal efficiency, small floor area, stable operation, reliable performance and convenient maintenance.

 

3.Steel blast furnace gas dust collector

The blast furnace gas dust collector of iron and steel adopts the technology of pulse injection dust cleaning by stopping air in different rooms, which overcomes the shortcomings of conventional pulse dust collector and reverse blowing dust collector in different rooms. It has strong dust cleaning ability, high dust removal efficiency, low emission concentration, small air leakage rate, less energy consumption, less steel consumption, less floor area, stable and reliable operation, and good economic benefits. It is suitable for purification of dust gas and material recovery in metallurgy, building materials, cement, machinery, chemical industry, electric power and light industry.

The raw gas (260 ℃) from the raw gas main pipe enters into the lower box of the bag filter through the branch pipe. After mechanical separation, the gas is filtered upward through the cloth bag, and the fine dust is attached to the outer surface of the filter bag. The clean gas is collected into the upper box through the filter bag, and then enters into the hot blast stove through the clean gas branch pipe and the main pipe. When the filtering time is up, with the increase of dust on the surface of the filter bag, the resistance of the dust collector will rise. When the resistance rises to the value, the electrical control system will send out the ash cleaning signal, the pneumatic butterfly valve and upper ball valve of the outlet branch pipe will automatically close, the pulse valve will open, the nitrogen from the cylinder will be injected from the bag mouth through the injection pipe, and the filter bag will expand rapidly.

The dust on the outer surface of the filter bag is shaken off and falls into the conical ash hopper at the lower part. At the end of the pulse valve injection, the dust collector continues to remain static, so that the fine dust in the cylinder has a static settlement process. At the end of this process, the outlet branch pneumatic butterfly valve and the upper ball valve are opened, the dust collector enters the normal filtering state, and the lower ball valve is opened through the impeller feeder The dust cleaning process of a box, the opening and closing of each valve in the above process, and the dust concentration test of a single box are all controlled by PLC system, so that the repeated work can purify the raw gas.

 

4.Dust collector in iron and steel plant

The filter bag made of porous filter cloth is used to separate the dust particles from the flue gas flow. When working, the flue gas flows through the filter bag from the outside to the inside, and the dust particles are blocked outside the filter bag.

The iron and steel industry is a major air polluter. The waste gas management of iron and steel industry implements the principle of comprehensive management. Efforts should be made to reduce energy consumption and raw material consumption, which is one of the fundamental ways to increase the emission of waste gas; the process, adopted process and equipment should be innovated to increase the emission of waste gas from consumption process; energy-saving management methods and equipment should be adopted to strengthen the management and recovery of waste gas; comprehensive use should be vigorously carried out.

At the present stage, a large number of flue gas will be discharged from the sintering machine of large steel plants in China, which will contain nitrogen, sulfur dioxide, dioxin, dust and other substances. Taking the sintering machine of 280 square meters as an example, the content of dust discharged into the atmosphere is 150mg / Nm3. According to this calculation, it will cause great pollution to the environment. At present, China has formulated detailed requirements and standards for energy conservation and emission reduction, and put forward suggestions for environmental protection According to the current standard of our country, the dust concentration discharged into the atmosphere is less than 50mg / Nm3, and the bag filter is an important part to achieve this requirement.

Main structure of dust collector in iron and steel plant:
1. The dust collector is divided into 24 chambers, arranged in two rows, with the main air inlet and outlet ducts in the middle. There are partitions between the silos to realize off-line ash cleaning.
2. A wind shield is set between the air inlet of each bin and the filter bag, and the air inlet mode is adopted inside the box.
3. Each bin is equipped with manual butterfly valve, and the outlet is equipped with pneumatic air stop valve. It can realize off-line ash cleaning and the maintenance of single bin and the air volume distribution of each bin under the condition of non-stop.
4. 216 filter bags are set in each bin, and the size of filter bag is 120mm × 6000mm. There are 5184 silos with a total filtration area of 11716m2.
5. The octagonal star section is adopted for the filter bag frame. Compared with the circular section, it can enhance the ash cleaning effect, reduce the wear between the filter bag and the frame, help to prolong the service life of the filter bag, and facilitate the extraction and insertion of the filter bag frame.
6. The material of filter bag is polyester needle felt.
7. A set of injection device is set in each bin, and the injection pipe and the outlet of pulse valve are inserted to facilitate disassembly.
8. The electromagnetic pulse valve is dmf80 straight through fast pulse valve, and its pressure output port is double twisted wire structure.
9. The top of the upper box body is provided with a water falling slope (20:1) and a water falling trough to prevent water from accumulating on the top cover.
11. Each bin is equipped with an ash hopper, a wall vibrator and a manhole.
12. The lower opening of the ash hopper is provided with a manual gate valve and a star type ash discharge valve, the former is used for repairing the star type unloader.

 

Cement -- Matching dust collector of filter bag

1.Dust collector of cement mixing station

The dust remover of cement mixing station is a new type of pulse bag type dust remover which introduces new equipment and new technology and improves by digestion. The dust collector of cement mixing station has the advantages of large air volume, high purification efficiency, small floor area, small wear of filter bag, long service life, simple filter bag replacement and convenient maintenance. The pulse reverse flow back blowing is used for ash cleaning. The electrical control adopts sequence controller, which has reliable performance and can be widely used for the flue gas purification of asphalt concrete industry. In recent years, the dust removal equipment of asphalt mixing plant has been widely used in various provinces and cities in China, and replaced by them, which is popular with users.

The dust collector of cement mixing station adopts Nomex dust bag to make the dust concentration discharged into the atmosphere less than 50mg/nm3, which meets the environmental protection requirements. The shell of dust remover in asphalt mixing station is insulated by rock wool, which can prevent the condensation of dust bag.

Working principle of dust collector in cement mixing plant:

The dust containing gas enters the bag filter from the air inlet, and then filters through the outer surface of the filter bag. The purified gas flows from the inside of the filter bag to the upper chambers, and is discharged from the air outlet through the Changwen tube. When the value reached, pulse blowing is carried out by the program control regularly when the dust adsorbed on the outer surface of the filter bag is reached. That is, the high-pressure air is sprayed to the Changwen tube, and the purified gas is blown back into the filter bag to form a large pressure difference, and the dust is cleaned down to achieve the purpose of cleaning the dust, and the resistance of the whole equipment and system is kept stable, The dust from the back blowing falls to the bottom of the lower box and is discharged and recycled by the screw conveyor.

The features of the dust collector in cement mixing plant are as follows:

1. The dust remover of cement mixing station adopts pulse back blowing ash cleaning method, which is one of the best cleaning effects in China. The box on the equipment is separated into 18 chambers which are not connected with each other, and is connected with a Changwen pipe. The purpose of ash cleaning is achieved by using program controlled pulse. The small venturi tube at the top of the spray pipe and filter bag is cancelled in structure. The structure is simple, and the operation and maintenance are convenient.

2. Compared with other dust collectors in China, the dust removal equipment in asphalt mixing plant has the characteristics of large air volume and small system resistance, and has a wide range of applications（ Purification and recovery of mixed gas with dust concentration of less than 60g/m3 at room temperature and high temperature)

3. The flower plate edge of the upper middle box is pressed into a conical hole, which makes it contact with the filter bag with a smooth surface, and has good sealing property, and reduces the wear between the hole edge and the filter bag.

4. The dust collector of cement mixing station is simple and reasonable in structure, and covers a small area, and can be installed indoors and outdoors. According to the production process, the air volume, the user can choose the model or parallel combination, and provide carbon steel or stainless steel dust remover as required.

 

2.Dust collector in cement plant

According to the pore size of cement, fly ash, stone powder, mineral powder, chemical powder and other powdery substances, the filter element of industrial dust collector is designed. The influence of large diameter and adhesion on the pore size of filter element can meet the filtering requirements of various powdery substances. It can not only meet the requirements of bulk truck air delivery and air delivery after the unpacking of finished products, but also ensure that there is no negative pressure in the bin when the powder materials are used. It has the advantages of small volume, compact structure, filtration area of 24 m2, small volume, vibration cleaning, using German filter material.

The dust remover of cement plant is mainly used to collect all kinds of powder materials in silo.

Working principle of dust collector in cement plant:

The special dust collector of cement plant ionizes the flue gas by high voltage electric field, and the charged dust in the air flow is separated from the air flow by the electric field. Negative is made of metal wires with different cross-section shapes, which is called discharge electricity. It is made of metal plates with different geometric shapes, which is called dust collector. The performance of dust catcher in cement plant is affected by three factors: dust property, equipment structure and flue gas velocity.

The dust catcher of cement plant will also cause excessive discharge due to the damage of filter bag. The dust collectors in the cement plant are more than 10 bag rooms. It takes 5 ~ 30 minutes to determine the location of the broken bag from the discovery of excessive discharge. At present, the service life of dust removal filter bag is more than one year, and the broken filter bag only occurs after one year. If it is found out that the damaged filter bag is located in the bag room, as long as the bag room is closed and replaced, other bag rooms can still operate normally. Generally, closing 20% bag chamber will not affect the production of process equipment and the dust removal efficiency of dust removal facilities. Timely detection of filter bag damage is the key to reduce excessive emissions, which can only rely on the timely alarm of online continuous detection equipment. It is generally believed that if the bag filter is broken, it can be found when a small part of the bag filter is damaged, and other filter bags will also play a role. The excessive emission is far less than that of the electrostatic precipitator when CO exceeds the standard.

Advantages of dust collector in cement plant

The range of gas treatment is large.

It can realize automatic control of operation.

The allowable operating temperature is high, such as shwb circuit dust collector, the allowable operating temperature is 250 ℃, and other types can reach 350 ~ 400 ℃ or high.

The resistance loss is small, generally below 20 mm water column. Compared with cyclone, the total power consumption is still small even considering the power consumption of power supply unit and rapping mechanism.

 

3.Dust collector on top of cement bin

The dust remover on the top of cement bin is a kind of single dust removal equipment with automatic ash cleaning structure. This kind of dust remover is widely used in the fine, non fibrous dry dust in the filter gas or a dust removal equipment for recovering dry powder in the process flow in cement, mineral powder, mining, metallurgy, building materials, machinery, chemical industry, grain processing and other industrial and mining enterprises.

Working principle of dust collector on the top of cement silo:

The dust filter of the dust collector on the top of the bin is carried out through the filter element. The filter element material is glass fiber. When the dust containing air passes through, the solid phase can be used to separate from the gas phase. The filter element of glass fiber is a porous dust filter material. When the air flow passes through, the particles in the air flow can be absorbed on the filter element or settled down due to vibration and the purified air can be discharged, In order to attach and sink the dust into the filter element, the dust collector shall be vibrated in sequence when the fan of each shift is stopped (every 2-4 hours), and the dust collector shall be vibrated for about 5 times.

The main structure design of dust collector on the top of cement silo is the spatial frame structure set by beam element. Therefore, all kinds of loads to be investigated can be simplified to equivalent joint force acting on the beam element node. Because the nature of beam element determines, each beam can be treated as a unit and some secondary beams can be deleted, The calculation amount of the corresponding stiffness and load will be reduced greatly when added to the main beam. The finite element model given here is shown in figure 10-. But it is pointed out that the displacement mode of finite element beam is actually given according to the formula of straight beam in material mechanics. Under the assumption of material mechanics, the internal force and displacement of two ends of the beam are obtained by finite element analysis. Meanwhile, its deformation form is half wave, which is obviously not enough for the analysis of non-random, which is because if a beam is a unit, The instability critical load of beam half wave can only be given by the finite element analysis of its structure, which may lead to the progress of the critical load of the structure and the structural analysis. Therefore, this problem is noticed when modeling the main structure of ESP. The solution is simple. Only some elements (generally one beam is divided into more than 3 elements) are required for some possible stable main beams. In the analysis of non-random, it is necessary to avoid only allowing the half wave instability of the fixed European tie rod at both ends to rise, thus increasing the reliability of the calculation results.

 

4.Dust collector of dryer

The dryer dust remover is specially designed for Φ one point five × 12m、 Φ one point five × 15m、 Φ two point two × 12m、 Φ two point four × The new product developed by the development of flue gas dust removal of drying machine with 16m and other specifications is adopted. The new technology of vertical kiln fiber bag dust removal won the ministerial science and technology progress award of 1989 is adopted for the dryer dust remover. The computer controls the back blowing, timing, fixed resistance ash cleaning and temperature detection display of the chamber, so as to make the glass fiber bag dust remover operate stably in the drying flue gas dust removal, The discharge concentration at the chimney outlet is lower than the specified discharge standard of 150mg/m3n (it can be guaranteed to be less than 100mg/m3n in practice). The equipment can be used for changing bags in separate rooms without stopping. It is simple and reliable to operate. It is used in silicon iron furnace, industrial electric furnace and low operating cost. It is an ideal equipment for flue gas dust removal of domestic dryers.

The dryer dust collector is a dust collector specially used to deal with the exhaust gas of the dryer. The dryer is based on the front hot air stove drum into the hot air to carry on the rolling drying of the material. Because the hot air stove in front of the dryer adopts the coal-fired method, the exhaust gas produced contains a large amount of SO2 and water vapor, which is easy to condensation and produce strong corrosiveness. Under the condition of high temperature and oxygen enrichment, it is also easy to generate H2SO3 with strong corrosiveness. Therefore, the waste gas treatment of the dryer is a serious problem which is a serious problem for production. The above characteristics of exhaust gas should be paid attention to when dealing with such gases. In view of this working condition, our company has carried out special treatment on the dust collector. The flower plate made of ordinary 325 steel plate is replaced with stainless steel. The filter bag is selected, the treated filter bag is fluorous, and the skeleton is made of silicone (or stainless steel). The dust collector is treated with three layers of epoxy polyester anticorrosive coating. The outer layer is insulated with 10 cm thick light rock wool and color steel plate. After the above improvement, the dust collector can meet the working conditions of the dryer.

Operation characteristics of the dust remover of dryer:

Bag filter is stable, simple to maintain and reliable in operation. It can remove dust with 0.1 micron particles, and the dust removal efficiency can reach 99%. The bag filter is used for the exhaust gas of dryer without considering the problem of exceeding the discharge concentration. The dryer anti condensation glass fiber bag dust remover is an ideal dust removal and purification equipment at present.

The dust collector of dryer is controlled by microcomputer, with back blowing in the chamber, cleaning dust at regular time, and equipped with temperature detection and display, over temperature alarm device. Cw300-fca anti condensation glass fiber filter bag is adopted to prevent the filter bag from condensation and will not burn the filter bag. Diameter 3 × The two-stage dust removal process is changed to lfef7 by 24m slag dryer × 358-hsy / h anti condensation bag dust collector, determined by environmental protection department, has a waste gas volume of 42621 standard cubic meters per hour, dust concentration of 69620 mg per standard cubic meter, and dust concentration of 147mg per standard cubic meter at the outlet, which meets the emission standard.

Application of dryer dust remover:

Under the normal condition of ash cleaning, the remaining ash layer remains stable, that is, the resistance is basically the same before and after ash cleaning, which overcomes the phenomenon of resistance accumulation with the increase of operation time. This kind of wind stopping and shock vibration beating is the combination of optimization of ash cleaning method, so it has high strength ash cleaning effect. The weight of the remaining ash layer is 10-20 times more than that of the average settlement in one filter period; However, the weight of the remaining ash layer is less than one third of the average deposition of a filter cycle, and it is only twice as much as that of the glass fiber flat bag.

The dryer dust remover is suitable for the purification of dust containing gas and the recovery of dust materials in food, pharmaceutical, feed, metallurgy, building materials, cement, machinery, chemical industry, power and light industry.

 

 

 

Wood--Dust removal equipment for woodworking industry

1.Central woodworking dust removal system

The principle of woodworking dust removal system is to save investment as much as possible. Due to the high concentration of dust produced by woodworking equipment in the process of processing, the commonly used explosion-proof pulse bag dust removal technology in China is adopted to achieve the purpose of dust recovery and waste gas purification, so that all emission indicators meet the emission requirements.

There are two important technical and economic indexes of woodworking dust removal system: one is investment cost, the other is operation cost. The former is disposable, while the latter is regular, and its cumulative number can be several times or even tens of times of the former. In the operation cost, the proportion of power consumption and vulnerable parts is large. Therefore, reasonable design is very important to reduce the operation cost. In the design of this dust removal process, we are more innovative than other similar equipment in the following aspects;

1. In the connection between the air outlet of the dust collector and the fan, we design a soft connection to eliminate the vibration caused by the high-speed operation of the fan; A muffler is designed at the outlet of the fan to reduce the noise caused by the high-speed operation of the fan;

2. In order to facilitate the maintenance and observation of the dust collector, we have designed a plexiglass observation (maintenance) door at the lower part of the dust hopper of the dust collector; The pipeline of the system is connected by flange between 4-6m, and the access door is designed about 5m; It is convenient to observe and clean the dust deposition in the pipeline;

3. According to the hydrophilic characteristics of wood dust, the dust is easy to agglomerate under some moisture content, and arch into a bridge in the dust hopper of the dust catcher, which leads to material blockage. We have designed a vibrator in the dust hopper of the dust catcher to assist in dust cleaning and reduce the manual auxiliary dust cleaning work;

4. The electrical control of dust removal system, ventilation and dust removal system need matching fan and air compressor, the drive needs three-phase four wire power supply, dust removal of dust collector should be equipped with a pulse controller, the pulse controller is installed near the dust collector, the power supply of control cabinet (box) is provided by the construction party, the cable is required to be pulled to the main switch pile in the control cabinet, at the same time, please provide public grounding, Convenient ground connection.

5. In view of the characteristics of high concentration of wood dust, we adopt the design of gradual airflow channel to ensure the uniform distribution of airflow. The air distribution is optimized to avoid high-speed scouring and abrasion of the local area inside the dust collector, so that all filter bags can be evenly injected and filtered by the compressed air, and the overall life of the filter bag can be improved.

 

 

2.Woodworking cyclone

The woodworking cyclone dust collector is mainly composed of ash hopper, filter chamber, clean air chamber, support, lifting valve, injection cleaning device, etc. When working, the dusty gas enters the ash hopper through the air duct. Large particles of dust directly fall into the bottom of the ash hopper, small particles of dust with the air flow turning upward into the filter chamber, and are blocked in the outer surface of the filter bag, purified flue gas into the bag, and through the bag mouth and the clean air chamber into the air outlet, and discharged by the exhaust outlet.

The structure of woodworking cyclone is simple, compact and the consumption of steel is low. Compared with the heavy and light fibrous dust, such as sawdust, shavings, asbestos powder, tobacco and so on, it has higher collection capacity.

In order to meet the more and more strict requirements of labor protection, environmental protection and product processing accuracy, woodworking manufacturing enterprises deal with the dust generated in the production process. A large number of micro dust and sawdust generated in the production process of woodworking industry will not only adhere to the surface of equipment and workpiece, affect the processing quality, cause workpiece scrap or frequent equipment failure, but also pollute the working environment, leading to silicosis. Therefore, the workshop ventilation, timely discharge of dust, and the dust air purification, in order to keep the equipment and workpiece surface clean.

The principle of woodworking cyclone dust collector: the woodworking cyclone dust collector has the characteristics of novel structure, small size, large air volume, light weight and high separation efficiency, with the separation efficiency up to 99.5% for the dust laden air flow containing wood blocks and other mixed debris, and small resistance. The structure of woodworking cyclone is simple, compact and the consumption of steel is low. Compared with the heavy and light fibrous dust, such as sawdust, shavings, asbestos powder, tobacco and so on, it has higher collection capacity.

Technical features of woodworking cyclone dust collector:

1. High dust removal efficiency. For the gas with dust mass liquid concentration less than 10 ISO / m3, the dust removal efficiency can reach 99.99%, which can adapt to continuous and high liquid concentration dust (the inlet mass liquid concentration can reach 60 ISO / m3).

2. Lower pressure air intake preset to overcome secondary dust. Proper treatment of super dust and low-density dust environment, coupled with excellent performance of filter material, can make the dust collector stable operation; Compared with the traditional bag filter, the energy consumption is reduced by 30%, and the equipment can operate stably.

3. Filter material net surface horizontal plug-in structure, horizontal change bag, meet the indoor installation of low floor; Compact structure, 30% less space than traditional products; Due to the adoption of reliable pulse spraying ash cleaning, the filtering wind speed of filter material in the same application environment is more than three times higher than that of reverse blowing ash cleaning method, so as to greatly reduce the filter material area and avoid the situation of complex equipment, large investment and large floor area.

4. The key mechanical and electrical components of the equipment are imported from Australia. For example, pulse instrument and program controller can work more than one million times to ensure the stable operation of dust removal system; The resistance of the dust collector is reduced by 20-30% compared with other essentials by using the filter material with good air permeability and anti sticking and moisture-proof treatment. Under normal use, the service life of the dust collector can reach more than 3 years.

 

 

 

3.Dust collector in woodworking workshop

The dust remover in woodworking workshop has the characteristics of small resistance, high dust removal efficiency, large air volume, stable performance, simple structure and low cost. After the dust gas enters from the upper air inlet of the ash hopper, the air flow moves towards the wind shield, and the flow rate decreases. Some large particles of dust are separated into the ash hopper due to the effect of inertia force. The dust containing gas enters the middle box and is filtered and purified by the filter bag. The dust is blocked on the outer surface of the filter bag. The purified gas enters the upper box through the filter bag mouth and is discharged by the air outlet.

The design concept of dust remover in woodworking workshop is based on the principle of saving investment as much as possible. Because of the high dust concentration produced by woodworking equipment during processing, the pulse bag dust removal technology commonly used in China is adopted to recover dust and purify waste gas, so that all emission indicators meet the emission requirements.

The dust remover in woodworking workshop is suitable for all kinds of woodworking machinery equipment such as four sides planer, sanding machine, sawing machine, slicing machine, rod mill, etc. the method of single machine dust removal or system dust removal can be used. Single machine dust removal is mainly used for dust removal of single woodworking machinery, which has the characteristics of flexibility and convenience. The system dust removal is used in the dust removal of woodworking machinery production line, which has the characteristics of economy, practicality and aesthetics, which does not affect the production operation, but also achieves the ideal dust removal effect. Bag filter is a high efficiency dust collector, and the dust removal effect can reach 99%. It is suitable for collecting dust of solid wood particleboard, artificial board particles and fiber. The pulse bag filter of air box uses filtration method to keep dust particles in dust containing gas on fabric of fabric fabric, so as to purify the gas. Compared with the general dust collector, the dust removal efficiency can be more than 99%, and the particles about 1 micron can be removed. The dust collector has the advantages of simple structure, low investment cost, simple operation, reliable management and maintenance technology.

In order to meet the requirements of more and more strict labor protection, environmental protection and product processing accuracy, woodworking manufacturing enterprises deal with the dust produced in the production process. A large number of micro dust and sawdust generated in the production process of woodworking industry will not only adhere to the surface of equipment and workpiece, affect the processing quality, cause workpiece scrap or frequent equipment failure, but also pollute the working environment, leading to silicosis. Therefore, the workshop ventilation, timely discharge of dust, and the dust air purification, in order to keep the equipment and workpiece surface clean.

 

 

4.Woodworking bag filter

Woodworking bag dust collector adopts the way of dust collection and treatment, which can purify and collect the dust generated by woodworking machinery operation. It is divided into two types: internal filter type and external filter type, usually according to different filtering methods. In order to avoid the direct impact of dust on the bag, the woodworking bag dust collector optimizes the air inlet system, adds the baffle plate, splitter plate and swirl plate, prolongs the service life of the bag, which is your choice.

Woodworking bag filter is an important part of: woodworking dust without three devices, piping system, fan system, filtration system. In these three systems, the structures and functions of different configurations are different, but the basic principles are the same, just like people wearing masks. The pipeline is connected with woodworking machinery and filtration system, and the fan works to generate negative pressure dust. The main ones are the configuration of fans and the performance of filter bags. The fan configuration is calculated according to the number of machines in the production workshop and the arrangement of machines, which requires the personnel to calculate the configuration, so that the air volume of the filter interface of each machine can reach the same, and then the dust can be removed effectively. Dust filter bag should be selected according to different environment, and the nature of dust produced in different woodworking workshops is different.

Working principle of woodworking bag dust collector: the woodworking bag dust collector is mainly composed of ash hopper, filter chamber, clean air chamber, support, lifting valve, injection cleaning device, etc. When working, the dusty gas enters the ash hopper through the air duct. Large particles of dust directly fall into the bottom of the ash hopper, small particles of dust with the air flow turning upward into the filter chamber, and are blocked in the outer surface of the filter bag, purified flue gas into the bag, and through the bag mouth and the clean air chamber into the air outlet, and discharged by the exhaust outlet. With the continuous filtration, the dust on the outer surface of the filter bag increases, and the resistance of the equipment increases. When the resistance of the equipment rises to the maximum value, the ash cleaning operation shall be carried out to prevent the accumulation of ash on the surface of the filter bag. Woodworking dust collector is composed of three parts: cyclone, ash hopper and volute (or air collecting cap). According to the number of cylinders, there are five combinations of single cylinder, double cylinder, three cylinder and six cylinder. Each combination has two kinds of air outlet forms: type I horizontal air outlet and type II (upper air outlet). For type I double cylinder combination, there are two combination forms of central air inlet and side air inlet and outlet, The type I single cylinder and three cylinders only have side air outlet, while the combination of four cylinders and six cylinders only has middle air inlet and outlet. For the type II combination, any one of the above type I air inlet positions can be used. This kind of dust removal equipment has the characteristics of small resistance, high dust removal efficiency, large air handling capacity, stable performance, small floor area, simple structure, practical and cheap, It is suitable for all kinds of mechanical processing, metallurgical building materials, mining dust coarse, intermediate purification.

Technical features of woodworking bag filter:

1. Lower pressure air intake preset to overcome secondary dust.

2. High dust removal efficiency.

3. Filter material net surface horizontal plug-in structure, horizontal change bag, meet the indoor installation of low floor; Compact structure, 30% less space than traditional products; Due to the adoption of reliable pulse spraying ash cleaning, the filtering wind speed of filter material in the same application environment is more than three times higher than that of reverse blowing ash cleaning method, so as to greatly reduce the filter material area and avoid the situation of complex equipment, large investment and large floor area.

Advantages of woodworking bag filter:

1. As the woodworking dust is flammable and explosive, the special bag filter for woodworking produced by our company has reliable device, explosion discharging device and strong pulse anti blocking device to ensure the long-term operation of bag filter equipment.

2. The dust of wood bran and sawdust is transported by centralized pneumatic conveying mode, and no dust secondary flying phenomenon occurs.

3. The equipment covers a small area and has beautiful layout.

4. Energy saving and environmental protection, low power consumption.