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What are the characteristics of PEPPNMO filter bags that can be cleaned?

Time : 2023-06-27 Hits : 2

The working principle of liquid filter bag is pressure filtration. The whole set of equipment includes three areas: bag filter, support basket and liquid filter bag. It is mainly made of PP polypropylene, PE polyester, NMO nylon, PTFE tetrafluoroethylene, stainless steel, degreasing, composite and other materials. The production process is mainly in the form of hot melting and sewing. The specifications include No. 2, No. 1, No. 5, No. 4, and No. 1. It can also be customized according to user needs. The filtered liquid is injected from the top or side of the bag filter, and then the liquid filter bag is supported by the mesh basket, so that the liquid filter bag is evenly diffused without adverse effects of turbulence; The particles filtered by the bag filter are intercepted in the liquid filter bag for easy replacement.

NMO filter bag: the nylon monofilament filter bag is made into a bag after being processed with nylon monofilament, which is especially suitable for the use of water-based paint and industries with low requirements on filtering accuracy. Nylon monofilament filter bag has many characteristics such as high dirt holding capacity, strong corrosion resistance, good temperature resistance, large flow, convenient operation, long service life, no fiber shedding, etc. The monofilament screen structure of nylon monofilament filter bag can directly intercept impurities in the filtrate on the material surface, so it is also called surface filtration type. The advantages of this filter bag are that the monofilament structure material can be repeatedly cleaned and used, and the cost is low. However, because it is a surface filtering mode, the surface of the filter bag is easy to be blocked. Therefore, it is suitable for coarse filtration with low precision, and the filtration precision is 20-500 meshes.

PP filter bag: the operating temperature of polypropylene is 90 ℃ - 100 ℃. Polypropylene has good chemical properties and excellent hydrolysis resistance; Polypropylene has high strength, good abrasion resistance, high elastic recovery rate, and good insulation performance, which can replace PE in some occasions.

PE filter bag: polyester, polyethylene terephthalate, specific gravity 1.38g/cm3, melting point 256 ℃, breaking strength 5.5g/d, limiting oxygen index 22. Thermoplastic fiber, which will burn and drip in case of fire, can be calendered and singed. The operating temperature is 130 ℃ - 150 ℃. Polyester is one of the most widely used filter materials. Polyester has excellent electrical insulation, good abrasion resistance, high strength and good thermal stability.

The lubricating oil filter bag has many advantages, such as simple structure, reasonable, good sealing, strong circulation ability, simple operation, etc. In particular, the side leakage rate of the filter bag is small, which can accurately ensure the filtering accuracy and quickly replace the filter bag. The internal and external surfaces of the lubricating oil filter are mechanically sandblasted and polished, which are uniform and easy to clean.

Cleaning method:

1. Common chemicals: remove the filter bag, shake it gently, pour out the dust and foreign matters in the filter bag, soak it in drinking water for no more than 20 minutes, fish it out, wash it with drinking water and tap it gently until the cleaning water is clear. After being flat and dry in the clean area, carefully check the filter bag, and replace the filter bag in time if it is damaged.

2. Cephalosporins: remove the filter bag, put it into the prepared 1% sodium carbonate solution, soak it for 10 minutes, inactivate it, and remove it. After the foreign matters in the bag are removed, wash it with drinking water and tap it gently until the cleaning water is clear. After being flat and dry in a clean area, carefully check the filter bag, and replace the filter bag in time if it is damaged.

3. The primary and intermediate efficiency filters shall be cleaned and dried indoors. Filter bags that are not used temporarily shall be put into clean plastic bags for sealing and storage after cleaning.

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