Some small knowledge of water pump maintenance

Water pump maintenance to check the sealing situation. If there is water leakage, add or replace the seal. Add lubricating oil. If the oil is discolored and has impurities, it should be replaced.

For water pump maintenance, check whether the pump body is in good condition, the nameplate is in good condition, the water flow direction is clear, the appearance is clean, and the paint is in good condition. The hexagonal rubber of the claw coupling should be replaced if it is damaged, and the screw and rubber of the cylindrical coupling should be replaced if it is damaged.

Tighten the base screws and prevent rust. The appearance should be clean and tidy, and the grounding wire should be well connected. Disassemble the lugs in the motor junction box. The three-phase wires and lugs in the motor junction box shall be firm and tight.

The appearance of roads and accessories shall be neat and beautiful, without cracks, and the paint shall be intact without peeling off. The check valve should be flexible, and there should be no water leakage inside and outside the valve body. Each valve switch shall be flexible and reliable, with no leakage inside and outside. Inching to judge whether the water pump is rotating correctly, if it is wrong, it should be corrected. Clean the flow of the impeller and pump body. In this way, Shanghai pump maintenance is a common method.

The water pump shaft will be corroded for various reasons during use, so in the process of water pump maintenance, the maintenance of the water pump shaft has the following views.

A pump is a machine that conveys or promotes a liquid. It transfers the mechanical energy of the prime mover or other external energy to the liquid, thereby increasing the energy of the liquid. It is mainly used to transport liquids, including water, oil, acid and alkali, emulsion, suspension emulsion and liquid metal. It can also transport liquids, gas mixtures and liquids containing suspended solids. The technical parameters of pump performance include flow, suction, head, shaft power, hydraulic power, efficiency, etc. According to the different working principle, it can be divided into positive displacement pump, vane pump and so on. Positive displacement pumps use changes in chamber volume to transfer energy. Vane pumps use the interaction of rotating blades and water to transfer energy, including centrifugal pumps, axial flow pumps and mixed flow pumps.

Therefore, in the process of water pump maintenance, according to its wear resistance and cavitation resistance, the pump casing and impeller of the circulating water pump are protected against cavitation to improve the service life and efficiency of the pump.

When the pump starts to work, the sand in the bottom valve will enter the pump with the water, causing wear on the impeller, pump casing and shaft, and seriously affecting the service life. The correct method should be to repair the bottom valve and replace it in time if it cannot be repaired.

To timely troubleshooting, do not allow the unit "sick" work. For example, if the pump shaft packing is seriously worn, it is necessary to increase the packing in time, otherwise the pump shaft packing will leak. Pump shaft packing leakage not only causes excessive energy consumption, but also causes cavitation, accelerates impeller damage, and directly affects the service life of the pump. For another example, if the pump vibrates violently, stop the machine immediately for inspection. If the pump shaft is bent and deformed, an accident is likely to occur.