In view of the fact that ordinary filters in underground coal mines are easily clogged and difficult to dismantle and clean, Shanghai Jiuxing has developed a high pressure resistant online mining backwash filter.

The mining backwash filter works in two operating states.

1.  Mining backwashing filter working state: the operating handle at the horizontal state with the direction of water intake, the upper valve is open, the lower valve is closed. A small part of the water carrying impurities goes through the inner bushing against the flow into the pre-stage filter cartridge, and most of the water drinks impurities directly into the post-stage filter cartridge under the action of water pressure driving force and inertia. The water passes through the filter cartridge from inside to outside, and the impurities are trapped in the inside of the cartridge during this process, and the purified water flows out through the outlet. In addition, under the action of negative pressure diversion, a small part of the clean water filtered by the back-stage filter cartridge will enter the front filter cartridge against the flow and backwash the front filter cartridge.

2. Mining backwash filter back re state: the operating handle is in a vertical state with the inlet direction, the upper valve is closed, while the lower valve is opened by the handle turning the shaft rod. At this time, the front part of the water containing impurities counter-current through the inner liner sleeve into the pre-stage cartridge, water from inside and outside through the filter cartridge, before the process of impurities in the inner liner sleeve and the inner side of the pre-stage cartridge, most of the purified water out through the outlet, the mine backwash filter under the action of pressure difference another small part of the clean water from the outer side of the post-stage cartridge into the inner cavity, this process will be the inner cavity of the cartridge and the impurities attached to the inner wall off again, and through the lower valve Discharge.

Mining backwashing filter effect test: The key to the backwashing effect lies in the size of the backwashing pressure, the amount of flow loss of hair rinsing, and the control of backwashing time. Add 50-5 mesh sieve of coal dust to the filter inlet, move the flow meter and pressure sensor to the filter outlet, close ball valve 1 and adjust the opening of ball valves 3 and 4 so that the filter gets different inlet pressure and flow rate. The reading of the pressure sensor during backwashing is the pressure required for backwashing, and the difference between the reading of the flow meter before and during backwashing is the lost flow rate.

The above is the mining backwashing filter shared with you by Shanghai Jiuching, hope it will be helpful to you, for more details, please pay attention to our official website.