Why is the water intake of the high-efficiency energy-saving multi-stage pump so low?

Category: Water pump knowledge

2025-07-09

High-efficiency energy-saving multi-stage pumps are commonly used in liquid transfer and boast superior performance and a wide range of applications. However, sometimes low suction volume may occur, potentially affecting production efficiency and normal equipment operation. The following is a discussion of the causes and solutions for low suction volume in high-efficiency energy-saving multi-stage pumps.

I. Possible Causes

1. Pipeline Issues: Blockages, leaks, or poor pipeline design may reduce the liquid flow rate drawn by the pump.

2. Pump Issues: Improper pump installation, impeller wear, insufficient speed, or foreign objects in the pump chamber can all affect the pump's suction capacity.

3. Changes in Liquid Properties: Changes in the temperature, viscosity, and density of the liquid may affect the pump's suction volume.

4. External Environmental Factors: Excessive suction height, insufficient inlet pressure, or excessively high ambient temperatures can also lead to reduced suction volume.

II. Solutions

1. Inspect Pipelines: Regularly inspect pipelines to ensure they are unobstructed and leak-free, and adjust pipeline design as needed.

2. Maintain Pump Equipment: Regularly inspect and maintain the pump, including cleaning the pump chamber and checking the wear of components such as the impeller and bearings, and ensuring correct pump installation.

3. Adjust Liquid Properties: Select the appropriate pump based on the liquid's properties and take measures to maintain the stability of the liquid properties.

4. Optimize External Environment: Reduce the pump's suction height, increase inlet pressure, and take measures to lower the ambient temperature to improve the pump's suction volume.

III. Preventive Measures

1. Regular Inspection and Maintenance: Regularly inspect and maintain the pump and pipelines to ensure the equipment is in good condition.

2. Correct Operation: Ensure correct pump installation, operation, and commissioning to avoid equipment damage due to misoperation.

3. Liquid Quality Control: Control the quality of the liquid input to the pump to ensure that its properties meet the requirements.

4. Design Improvement: Improve the design of the pump and pipelines based on actual needs and environmental conditions to improve the equipment's suction capacity.

In summary, there are various reasons for low suction volume in high-efficiency energy-saving multi-stage pumps, including pipeline issues, pump issues, changes in liquid properties, and external environmental factors. To solve this problem, it is necessary to take corresponding measures based on the specific cause, such as inspecting pipelines, maintaining pump equipment, adjusting liquid properties, and optimizing the external environment. In addition, preventive measures should be taken to ensure the normal operation and extend the service life of the equipment.

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