Water pumps are more common in daily life. They are mostly used in places such as water sources and construction sites to guide low or distant water to designated places. At present, the traditional water pump includes a motor and a pump body installed on the motor. The motor includes a motor housing, a stator, a rotor, a rotating shaft, a front end cover, and a rear end cover. The front end of the rotating shaft extends out of the front end cover, and the rear end is fixed to the back end cover. In the middle part, the front end cover and the rear end cover are respectively fixedly installed with the rotating shaft through the front bearing and the rear bearing. The pump body includes a pump casing and a pump cover. The pump casing is provided with a water inlet and a water outlet. The rotating shaft passes through the pump cover and extends into the pump casing. An impeller is installed on the rotating shaft in the pump casing, and a mechanical seal is arranged on the rotating shaft between the pump cover and the impeller.
Common mechanical seal structure is composed of stationary ring (static ring), rotating ring (moving ring), elastic element, spring seat, set screw, rotating ring auxiliary sealing ring, and stationary ring auxiliary sealing ring. The anti-rotation pin is fixed on The gland is used to prevent the rotation of the stationary ring. The rotating ring and the stationary ring are often called compensation rings or non-compensation rings according to whether they have axial compensation capabilities. In the working process of this kind of water pump, its working state cannot be well detected. For example, the internal parts of the water pump cause serious heat generation due to the long time work of the water pump, and internal leakage occurs.
However, these problems cannot be predicted before the water pump fails. Only after the water pump fails can be disassembled and repaired after troubleshooting one by one. This will cause the difficulty of repair and the defects of long repair time. Once a failure occurs, it may cause some unpredictable safety hazards, and it also brings unnecessary trouble to normal work.