Detailed explanation of parameters and sterilization method of high-quality PP pleated filter element

The PP pleated filter element is a membrane pleated filter element with a membrane as the core. After the material of the filter membrane is determined, the polypropylene non-woven fabric (net) is divided into a guide layer and a support. After folding, it is inserted into the central tube and placed in the shell. Adhesive-free hot-melt welding technology is adopted, and a complete integrated filter element is formed by melting and sealing, which does not contain chemical contaminants. The product is subject to 100% integrity testing. Endotoxin ≤ 0.25EV/ml meets the US Pharmacopeia (VSP) standard. The folded structure of the pp cotton filter element has a large filtering area, low initial pressure difference, fast flow rate, small filter volume and low cost. Because the pre-filtration and final filtration are combined into one, the filter element has a large dirt-holding capacity. The service life is longer than that of a single pore size filter element. A single pure polypropylene material, easy to judge its chemical compatibility. However, in addition to the above advantages, the PP pleated filter also has a small working pressure (generally it cannot exceed 0.3 Mpa, if the pressure exceeds the pressure, the pores will expand), and the solid is easy to filter. Especially when the working temperature is greater than 60 °C, the recoil effect is not ideal. Wait for the disadvantage. Hebei pp folded filter element detection and sterilization operation method: Detect the pressure of steam supply and compressed gas, and set them to the undetermined value. At this time, the pressure value should be set between 1.5bar and 2bar. Open valve a and valve b and purge the steam line until the condensate is completely removed. Open valves c and d until the condensate is completely drained. Slowly open the valve c to increase the inflow of steam, so as to wait for 3 to 4 minutes to further heat the PP pleated water filter. Partially close the exhaust valves b, d, and f, so that the steam containing water droplets is continuously discharged. This kind of pleated filter element is a double-layer polypropylene material folded structure, its inner layer is (one of PP, PTFE, PES), which is the final filter layer, and the outer layer is made of a non-woven fabric with a pore size as a coarse filter layer. When it comes to pre-filtration, the inner and outer brackets are made of polypropylene or stainless steel; therefore, the filter element is a combination of pre-filtration and final filtration. The filtration precision of the filter element can be selected according to different requirements of users.

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