Analysis on the Reasons for Vibration of Slurry Pump Pipeline and Pump Body

1. Problems about the slurry pump itself

1. Impeller imbalance

Cause: The impeller may have uneven mass during manufacturing, or the impeller may lose balance due to wear, corrosion and other reasons during use. This imbalance will cause centrifugal force imbalance during operation, causing vibration of the pump body. This vibration will intensify as the speed of the slurry pump increases, which will not only affect the performance and life of the pump, but may also cause damage to the entire pipeline system.

2. Bearings damaged

The bearing may be damaged during long-term operation due to wear, poor lubrication, overload and other reasons. This damage will cause the rotation of the pump shaft to be unstable, causing the pump body to vibrate. At the same time, damaged bearings may also produce noise, further affecting the operating environment of the equipment.

3. Pump shaft bending

The pump shaft may be bent during transportation, installation or use. This bending causes eccentric rotation of the pump during operation, causing vibration of the pump body. This vibration can cause additional pressure on the seals, bearings and other components of the slurry pump, accelerating their damage.

2. Problems with pipeline system

1. Improper pipeline installation

The installation of the pipeline does not meet the requirements, such as the pipeline support is not firm, the connection between the pipeline and the pump is not tight, and the direction of the pipeline is unreasonable. This improper installation will cause the vibration of the slurry pump to be transmitted to the entire pipeline system, aggravating the degree of vibration.

2. Pipeline blockage

The pipeline may be blocked due to the accumulation of solid particles, scaling, and entry of foreign objects. This blockage will hinder the flow of fluid, causing the outlet pressure of the slurry pump to increase and reduce the flow rate. This pressure change can cause vibrations in the pump and pipeline system, which may damage the pump and pipeline in severe cases.

3. Unreasonable design of import and export pipelines

The design parameters such as diameter, length, number of elbows of the inlet and outlet pipelines are unreasonable, which may increase the flow resistance of the fluid in the pipeline, resulting in pressure fluctuations and vibrations.

III. Issues of working conditions

1. Flow and head mismatch

The actual operating flow and head of the slurry pump do not match the design value, which may be caused by changes in system requirements, improper valve adjustment, and pipeline leakage.

2. Changes in media properties

Changes in the characteristics of the conveyed medium, such as the increase in viscosity, density, solid content, etc., may affect the performance and operating stability of the slurry pump.

3. Cavitation phenomenon

When the inlet pressure of the slurry pump is lower than the saturated steam pressure of the conveying medium, cavitation will occur at the inlet. This phenomenon will cause the pump body to vibrate, reducing the pump efficiency and service life.