In the modern industrial field, liquid transportation is an indispensable part of many production processes. As a highly efficient liquid transportation equipment, multi-stage water supply pumps occupy an important position in industrial applications due to their unique performance and structural characteristics.

As a common centrifugal pump, the self-priming pump has the advantages of compact structure, easy operation and stable operation. It is widely used in power, chemical, metallurgy, environmental protection and other industries. However, in the actual operation process, some self-priming pumps will have the problem of large sound and vibration, which not only affects the normal operation of the equipment, but also may cause noise pollution to the surrounding environment. Therefore, it is of great practical significance to study the causes and solutions of the large sound and vibration of the self-priming pump.

The vertical pipeline pump has a vertical structure. The inlet and outlet diameters are the same and located on the same center line. It can be installed in the pipeline like a valve. It is equipped with installation feet to increase the stability of the pump. It has a compact and beautiful appearance and takes up less space. The area is small and the construction investment is low. I introduced how to solve the vibration and failure of vertical pipeline pumps during use.

The stator of the G-type single screw pump is also called a rubber sleeve. The inner wall of the rubber sleeve is made of rubber material. Since the gap between the rubber sleeve and the rotor (screw) is small, the G-type screw pump is prohibited from idling and must have liquid for use. There is lubrication between the rubber sleeve and the screw shaft. During the rotation of the rotor (screw), friction will occur with the rubber sleeve. If the transported liquid contains fine hard particles, the service life of the rubber sleeve will be reduced. It is recommended to use abrasive liquids. Low speed screw pump. So to extend the service life of the rubber sleeve, you need to reduce the wear of the rubber.