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[Chemical Knowledge]：Return pump principle-make liquid delivery more efficient and stable

Read： 800 Time：20months ago Source：Transform the World with Simplicity

Reflux pump is a kind of liquid conveying equipment widely used in chemical, pharmaceutical, food, petroleum and other fields. Its main function is to transport low-pressure, low-flow but high-lift liquids to higher locations, such as storage tanks, tanks, reactors, and pipelines. The reflux pump can not only improve the efficiency and stability of transmission, but also has certain characteristics of explosion-proof, corrosion resistance and self-priming ability, so it has been widely used. The actuator of

reflux pump is mainly composed of impeller, pump body, import and export pipeline, bolt cover and shaft seal. Its working principle is relatively simple. The liquid is sucked into the pump body from the inlet. After the rotation of the impeller, a large amount of centrifugal force is generated in the pump body to compress and push the liquid to the outlet. When the liquid is subjected to resistance at the outlet and cannot flow out naturally, part of the liquid will flow back into the pump body and enter the suction port again along the return pipe. This back and forth flow creates a stable fluid environment in the impeller and the pump body, which improves the efficiency and stability of the reflux pump during high-lift delivery. The choice of

reflux pump is related to its application environment, transmission medium, transmission flow rate and head. It is generally believed that the head of the reflux pump is greater than the highest height of the conveying medium, and the flow rate needs to be reasonably designed and selected according to the actual demand. When using the return pump, it is necessary to pay attention to the gap between the impeller and the pump body, the sealing effect of the shaft seal, the setting of the return pipe and the valve, and the maintenance of the pipe to keep clean and non-clogging. Only the correct selection and use of reflux pump, and standardized maintenance, in order to give full play to its efficient and stable transport role. Although the principle of

reflux pump is simple, its role in the process of conveying liquid is very important. The correct selection and use of reflux pumps can effectively improve the efficiency and stability of liquid transportation, reduce mechanical losses and maintenance costs, and provide support and guarantee for the development of related industries.

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