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Microcomputer control method for backwashing filter

Apr 08, 2019

The backwash filter has realized automatic control, which mainly relies on its microcomputer controller. After the system is running, observe the inlet water pressure value of the device, and then adjust the value of the outlet water pressure gauge to be less than the inlet water pressure value of 0.06-0.08MPa. . For example, if the inlet pressure is 0.2 MPa, the value of the outlet contact pressure gauge can be adjusted to between 0.32-0.34 MPa.

Then power on the microcomputer and turn on the power switch on the control panel. If the outlet pressure is lower than the set pressure value at this time, the device remains in the working state, the work indicator light is on, the automatic actuator opens the valve plate, and the drain solenoid valve (or electric valve) is closed.

If the outlet pressure is lower than the set pressure value, the device enters the backwash state, the backwash indicator lights, the automatic actuator closes the valve plate, and the drain solenoid valve (or motor valve) opens. After the backwashing process is delayed for 2-4 minutes, it returns to the working state. If the outlet pressure is higher than the set pressure value at this time, the equipment maintains the normal water discharge state; if the outlet water pressure is still lower than the set pressure value, the equipment works for 2-4 minutes, backwashing for 2-4 minutes, and thus repeats until The outlet pressure value is higher than the set pressure value.

Backwashing of the backwashing filter The gate shaft and the equipment cylinder are double rubber ring seals. If water leakage occurs during use, use a small wrench to tighten the three screws on the gland properly and evenly for several turns. The leak is correct. If the gland is pressed down to the bottom and the water leakage is not resolved, a new seal or packing needs to be replaced.

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