How to choose between self-cleaning filter and multi-column backwash filter?
First, the working principle of self-cleaning filter and backwashing filter is different
Since the actual operation of the cleaning filter, the liquid from the inlet into the filter, first flow through the coarse filter element components, do preliminary filtration, filter some large particles of impurities, and then into the filter net, because the diameter of the filter net is small, can play the role of filtering fine impurities, after double filtration, clean liquid will be discharged from the outlet.
The multi-column backwashing filter in actual operation, the flow guide valve is in the open state, and the sewage is in the closed state, so that the liquid from the inlet into the backwashing filter, flow through the filter, and then sent out from the outlet, the impurities in the liquid will be intercepted in the process of flowing through the filter. If the multi-column backwash filter needs blowdown, turn off the flow guide valve first and then open the blowdown valve. In this way, the liquid will be filtered in the process of flowing through the filter screen, and the first half of the liquid will flow into the system after filtering, while the other part of the liquid will be discharged from the outside to the inside after passing through the filter screen. Constantly washing the inner wall of the dirty material, then sent out through the sewage tank.
Two, the structure of self-cleaning filter and multi-column backwashing filter is different
As another type of washable filter, self-cleaning filter is mainly composed of driving device, control pipeline, electronic control device, main parts, filter element, blowdown valve, cleaning device, etc. Among them, the electric control device, blowdown valve and control line are the control part of the self-cleaning filter, which can automatically clean blowdown.
The multi-column backwash filter is mainly composed of barrel body, stainless steel filter net, butterfly valve and sewage collection parts. Filter in the actual operation, the butterfly valve is in the open state, and the sewage is in the closed state, so that the liquid from the inlet through the filter, and then sent out from the outlet.
The above is the main difference between self - cleaning filter and multi - column backwash filter. Backwash filter cleaning is more convenient, backwash process is a reverse automatic washing filter, and constantly eliminate dirty material process, do not need to turn off the system, do not need to clean the filter element, easy to operate. Of course, you should also choose the appropriate filter according to the actual situation.
