1. The water to be treated by the filter enters the body from the water inlet, and the impurities in the water are deposited on the stainless steel filter screen, resulting in a pressure difference. The pressure difference between the inlet and outlet is monitored by the pressure difference switch. When the pressure difference reaches the set value, the electric controller sends the hydraulic control valve to drive the motor signal.
After the equipment is installed, the technicians will debug, set the filtration time and cleaning conversion time, the water to be treated enters the body from the water inlet, and the filter starts to work normally. When the preset cleaning time is reached, the electric controller will supply the hydraulic control valve. , Drive the motor signal to trigger the action.
2. The motor drives the brush to rotate to clean the filter element. At the same time, the control valve is opened for sewage discharge. The entire cleaning process only lasts for tens of seconds. When the cleaning is over, the control valve is closed, the motor stops rotating, and the system returns to its initial state. Start to enter the next filtering process. The inside of the filter shell is mainly composed of coarse filter screen, fine filter screen, suction pipe, stainless steel brush or stainless steel suction nozzle, sealing ring, anti-corrosion coating, rotating shaft, etc.
3. The container is divided into upper and lower chambers by filter medium, which constitutes a simple filter. The suspension is added to the upper chamber, and enters the lower chamber through the filter medium under pressure to become filtrate, and the solid particles are trapped on the surface of the filter medium to form a filter residue (or filter cake). During the filtration process, the filter residue layer existing on the surface of the filter medium gradually thickens, the resistance of the liquid passing through the filter residue layer increases, and the filtration speed decreases.
4. When the filter chamber is full of filter residues or the filtration speed is too low, stop the filtration, remove the filter residues, and regenerate the filter medium to complete a filtration cycle. The liquid passing through the filter residue layer and the filter medium must overcome the resistance, so there must be a pressure difference on both sides of the filter medium, which is the driving force to realize the filtration. Increasing the pressure difference can speed up the filtration, but the deformed particles are easy to block the pores of the filter medium when the pressure difference is large, and the filtration is slowed down.
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