Self-priming pump selection skills and precautions

Self-priming pump is often used in pumping, water supply, pressurization and other work under various working conditions, with simple structure, small volume, easy installation, use and maintenance is relatively simple. In order to be able to choose the right self-priming pump and make it work properly, we need to pay attention to some key elements.

The key to selecting a self-priming pump is to determine the required pump flow and head. Flow rate refers to the volume of liquid through the self-priming pump per unit time, usually expressed in cubic meters/hour, liters/second and other units. Head refers to the kinetic energy required for the liquid to move from the inlet to the outlet, expressed in units such as meters or kilopascals. Understanding the specific requirements of flow and head can better choose the right self-priming pump.

When choosing a self-priming pump, you also need to consider the type of pump. According to different requirements, there are self-priming centrifugal pump, self-priming sewage pump, self-priming centrifugal vortex pump and other types. Self-priming centrifugal pump is suitable for transporting clean water or liquids with physical properties similar to water; Self-priming sewage pump is suitable for conveying sewage containing suspended matter or fibrous material; Self-priming centrifugal eddy current pump is suitable for conveying liquids with large particles such as particles and mud. According to the specific needs to choose the appropriate type, you can ensure the stability and reliability of the pump during use.

Choosing a self-priming pump also needs to consider the material of the pump. According to the nature of the liquid and the working environment to choose the pump body, impeller, bearing and other parts of the material. Common pump body materials are cast iron, stainless steel, plastic and so on; Impeller material is usually cast iron, stainless steel, copper and so on; Bearing material can choose stainless steel, tungsten carbon alloy, etc. Choosing the right material can improve the corrosion resistance and wear resistance of the pump, thereby extending the service life of the pump.

When choosing a self-priming pump, it is also necessary to consider the power and efficiency of the pump. The power of the pump refers to the power consumed by the pump, usually expressed in kilowatts or watts; The efficiency of a pump is the ratio between the output power of the pump and the input power, usually expressed as a percentage. Choosing the right power and efficiency can improve the working efficiency of the pump and reduce energy consumption.

There are other factors to consider. For example, according to the specific use of the environment to choose the appropriate installation, such as ground installation, hanging installation, etc.; Considering the noise and vibration of the pump is also an important factor, especially in some sensitive noise occasions, should choose a self-priming pump with low noise and low vibration.