Rotary piston pump

Abstract

The invention discloses a rotary piston pump and relates to a rotary piston pump for continuously changing pressure at water inlet and outlet ends of a pump cavity through a rotary piston structure so as to fulfill the aims of pumping and sucking water. In order to overcome the defects in the prior art, the invention provides a rotary piston pump with the advantages of high efficiency, high pressure, simple structure, excellent performance and wide application range. In order to fulfill the aims, the technical scheme is that: the rotary piston pump comprises a hollow shell, wherein two ends of the shell are open and are respectively provided with a front cover and a rear cover with sealing performance; the upper part of the shell is respectively provided with a water inlet and a water outlet; an isolated body is arranged between the water inlet and the water outlet; a rotating device is arranged inside the shell; and the water inlet is separated from the water outlet through the rotating device and the isolated body. The rotary piston pump overcomes the defects of low efficiency and low pressure in the prior art, and can be applied to high-pressure fluid transmission on various occasions.

Description

technical field [0001] The invention relates to a water pump, in particular to a rotary piston pump which makes the pressure at the water inlet and outlet of the pump cavity constantly change through a rotary piston structure so as to achieve the purpose of pumping and absorbing water. technical background [0002] At present, the centrifugal pump has become the leading product of the water pump because of its simple structure, convenient installation and low price. But people have overlooked two fatal shortcomings of centrifugal pumps. The first disadvantage is low efficiency, especially at higher pressures. The efficiency of most water pumps is often less than 50%, which wastes a lot of energy, which greatly increases the operating cost. Especially for some large-scale water lifting projects, the daily electricity consumption can reach millions of yuan, and the waste of energy will bring huge economic losses. The second shortcoming is that the pressure is small. The hea...

AI Technical Summary

Problems solved by technology

But people ignore the two fatal shortcomings of centrifugal pumps

The first disadvantage is low efficiency, especially at higher pressures, the efficiency of most water pumps is often less than 50%, which wastes a lot of energy, which greatly increases the operating cost

Especially for some large-scale water lifting projects, the daily electricity consumption can reach millions of yuan, and the waste of energy will bring huge economic losses

The second disadvantage is that the pressure is small

The head of most centrifugal pumps is only a few twenty or thirty meters, and some centrifugal pumps have a head of only a few meters, which greatly reduces the practical range of centrifugal pumps, and centrifugal pumps are not competent for many working conditions.

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