How to distinguish the Filter Bag filter accuracy
The liquid flows from the Filter Bag to the bag, and the filtered particles are trapped in the bag. The working principle of the bag filter is pressure filtration. Bag filter system consists of three parts: filter containers, support basket and Filter Bags.
Usually the PE / PP Filter Bag filter accuracy unit is the number of "micron" (μm), and nylon filter, stainless steel filter filter unit is the number of "head" said.
"Head" refers to the number of holes per square inch (1 inch 25.4mm) mesh, 50 mesh refers to the per square inch of the hole is 50, 500 is 500, the higher the number of eyes, the more holes; In addition to the pores of the screen, it is used to indicate the particle size of the particles that can pass through the screen. The higher the mesh size is, the smaller the particle size is.
It can be seen from the definition of "head" above that the size of the pore size is related to the diameter of the yarn for weaving the cloth, and in practical use, it has a great relationship with the filament, multifilament and weaving method, and the centrifugation Machine speed (centrifugal force size), filter material performance, temperature and so have a great relationship, so choose the appropriate case for their own Filter Bag is also a very complex selection process.
Liquid Filter Bags are common problems in development
1, when to replace the Filter Bag?
There are two ways in practical application to determine when to replace the Filter Bag:
Completely follow the experience to roughly determine the replacement time.
In the bag filter inlet and outlet pipes are installed on the pressure gauge, through the pressure gauge before and after the pressure difference to determine the time to replace the Filter Bag, the general Filter Bag can withstand the pressure difference of 0.5 ~ 1kg / cm2 or so, When the pressure reaches this range, it should be promptly replaced Filter Bag to avoid cracking bag, affecting the filtering effect, not because of small loss.
2, step by step filter;
Bag filter can be installed in series to achieve progressive filtering.
If installed in the front of the filter for high-precision filtration, you can significantly reduce the cost of filtration. The same can also be sand filter and other filtering methods combined with the bag filter, thereby further enhancing the filter quality, reduce the cost of Filter Bags.
Will be self-cleaning machine, centrifugal and bag filter together, we can use alone, you can also use other principles of the filter in series to achieve the desired results.
3, how to achieve uninterrupted filtering?
Bag filter can be installed in parallel to ensure the continuity of filtration, or increase the flow, as shown in parallel installation, alternating replacement Filter Bag, you can maintain continuous filtering.
Filter Bags, many friends are not very understanding, in fact, it is a filter element, it is very critical in the industry to use it, in fact, Filter Bags can not only filter the liquid can also filter the gas, Xiao Bian to give Friends say that the use of liquid Filter Bags, for the liquid Filter Bag its ring has a lot of different types, there are stainless steel ring mouth, plastic ring mouth, for the bottom of the bag with the top of the bag there are many different design options.
So the Filter Bag can be used in many industries above, it has the advantage of a lot, the first is the liquid Filter Bag with silicone-free high-speed sewing machine production, so there will not be any silicone oil pollution problems. Second, The bag of the pocket of the suture is improved, so there is no high convex led to side leakage.Third, the Filter Bag above the label specifications of the label can be easily removed, so you can prevent the Filter Bag label The filtrate pollution.Finally Wuxi Fei Ou Te said that the Filter Bag used in welding technology, greatly improving the sealing performance.