1. What kinds of filter cloths are there in the filter press
1. For example, according to the raw materials: polyester filter cloth, polypropylene filter cloth, nylon filter cloth, aramid fiber filter cloth, etc.
2. Distinguish according to the use of filter cloth on the filter: belt filter cloth, plate and frame filter cloth, centrifuge filter bag and so on.
3. Distinguish by material: filament filter cloth, monofilament filter cloth, tearing membrane filter cloth, etc.
Second, how to choose filter cloth for filter press in different industries
1. Polyester long fiber filter cloth has smooth surface, good wear resistance, high strength, After twisting, the strength is higher and the abrasion resistance is better, so that the fabric has good air permeability, fast water leakage and convenient cleaning. Mainly used in pharmaceutical, food, chemical, metallurgy, industrial filter press, centrifuge filter cloth, etc.
2. The raw material structure of polyester staple fiber filter cloth is short and hairy, the woven fabric is dense, and the particle retention is good, but the peelability and air permeability are poor. The strength, wear resistance and water leakage are not as good as polyester long fiber filter cloth. Uses Mainly used in pharmaceutical, sugar, food, chemical, metallurgy, industrial filter presses, centrifuges, etc.
3. Cotton-fiber filter cloth nylon fiber is resistant to strong alkali and weak acid. After being treated with NaOH (10%) at 95°C for 16 hours, the strength loss is negligible, but nylon is not light-fast, easy to change color and become brittle, so nylon fabrics should not be exposed to sunlight for a long time. Nylon 66 cannot be used in pharmaceutical and food manufacturers because it is toxic and harmful to human health. The main uses are rubber, ceramics, pharmaceuticals, food, metallurgy, etc.
4. Polypropylene staple fiber filter cloth, short fiber, spun yarn with wool; cloth surface with wool, powder filtration and pressure filtration effect are better than long fibers; mainly used: chemical industry, ceramics, Pharmaceutical, smelting, manufacturing, mineral processing as filter bottom.
5. Polypropylene long fiber filter cloth, long fiber, smooth yarn; industrial cloth woven from polypropylene staple fiber; industrial cloth woven from polypropylene long fiber, smooth surface, breathable performance Well, the main uses are: chemical, ceramic, pharmaceutical, smelting, manufacturing, mineral processing as filter bottom.
6. Vinylon filter cloth can withstand the action of strong alkali, and has good hygroscopicity and is easy to combine with rubber. It is a good material for rubber industry. Its disadvantage is low temperature resistance, When the temperature reaches 100 ℃, it will shrink, and it is not resistant to acid. It is mainly used in the factories with strong alkalinity and in the rubber industry.
