Working Principle of Disc Filter

Working Principle

Filtering stage: The water flows into the filter through the filtering inlet, and the filter laminations are tightly pressed together under the action of spring force and hydraulic force. Impurity particles are trapped at the intersection of the laminations, and the filtered water flows out from the main channel of the filter.
Backwash stage: When a certain pressure difference or set time is reached, the system automatically enters the backwash state. The controller controls the valve to change the direction of water flow, and the one-way diaphragm at the bottom of the filter closes the main channel. Backwash water enters the four sets of nozzle channels, and the water pressure in the piston chamber rises. The piston moves upward to overcome the pressure of the spring on the stack, releasing the piston space at the top of the stack. Backwash water is sprayed at high speed from the nozzle along the tangent direction of the stack, causing the stack to rotate and evenly separate, and the impurities trapped on the stack are sprayed and thrown out. After the backwash is completed, the direction of water flow changes again, the laminations are re compressed, and the system returns to the filtering state.