How to Maintain WQK Cutting Sewage Pump?

The WQK cutting sewage pump is an electromechanical device used to treat sewage containing solid particles and fibers. It has a combined cutting system of built-in rotating cutter disc and fixed blade, which can crush long fibers and large-sized impurities to prevent pump body clogging. The pump is usually composed of cast iron or stainless steel housing, submersible motor, mechanical seal and automatic coupling device. The maintenance focus is to ensure cutting efficiency, seal reliability and motor heat dissipation efficiency.

During the operation of WQK cutting sewage pump, the operator needs to record the current fluctuation range of the pump. Abnormal increase in current may indicate blade wear or impeller entanglement with foreign matter. The tightness of the pump body fixing bolts should be checked weekly. Increased vibration amplitude is usually related to loose foundation or increased bearing clearance. Clean the winding outside the pump body at least once a month, and visually check whether the cable surface is damaged to ensure the integrity of the insulation layer.

The maintenance of WQK cutting sewage pump requires regular disassembly and inspection. When the blade edge thickness exceeds the original design value by 30%, it needs to be ground or replaced. The cutter disc clearance adjustment should ensure that no metal friction is generated during the cutting process. The hardness of the blade substrate must be maintained at more than 85% of the initial value. Excessive softening will lead to reduced cutting efficiency. The dynamic balance needs to be calibrated during reassembly to prevent abnormal vibration caused by high-speed rotation.

The maintenance of the sealing system directly affects the life of the WQK Cutting Sewage Pump. The leakage of the mechanical seal should not exceed 3 drops per minute. When radial cracks or axial scratches appear on the sealing surface, it must be replaced immediately.

The maintenance of the motor should focus on heat dissipation and insulation protection. The cleaning frequency of the heat dissipation channel is adjusted according to the water quality. The sewage environment with high sand content needs to flush the inner wall of the cooling jacket every month.

Preventive maintenance can extend the service life of the WQK cutting sewage pump. It is recommended to disassemble and inspect the entire system every 1500 hours of operation, focusing on evaluating the degree of impeller cavitation, sleeve wear and oxidation state of the cable connector. The inventory of wearing parts should include at least two sets of blade sets and mechanical seal components to ensure quick replacement in case of failure.