Novel micro lift rotation paddle pump performance test device

Abstract

The invention discloses a novel micro lift rotation paddle pump performance test device and belongs to the technical field of water conservancy mechanical equipment. The novel micro lift rotation paddle pump performance test device is structurally formed by connecting a water supply valve, a water supply pipe, a water inlet overflow chamber, a water inlet overflow plate, a water inlet groove, a hub, a blade, a rim, a water outlet groove, a water outlet overflow plate, a water outlet overflow chamber, a water outlet collection pipe and an electromagnetic flowmeter. Performance of a micro lift rotation paddle pump used in a low-lift working condition can be tested effectively, accuracy of a design theory and a computing method are verified, finally the novel pump which operates safely, stably and efficiently under 0-2 m lift is obtained, low operation efficiency, unit unsteadiness, energy waste, large hydraulic loss of a runner and other defects of an axial flow pump of a middle and lowlift in the traditional low-lift working condition are overcome, and crucial significance is achieved for improving pump performance during operation in a working condition of very low lift.

Description

technical field [0001] The invention belongs to the technical field of water conservancy machinery and equipment, and relates to a pump performance test device, in particular to a novel micro-lift rotary scraper pump performance test device. Background technique [0002] In our country, water-lifting machinery has existed since ancient times. Our ancestors created tools for lifting water as early as the beginning of the Christian era. Among them, the most widely used and longest-running waterwheel is the waterwheel. Humans began to use waterwheels to lift water during the Eastern Han Dynasty, which has a history of more than 1,800 years. Waterwheels are driven by wind power, water power, stored power or manpower. In the 1960s, there were a large number of windmills in the river network area of ​​our country. Windmills are waterwheels driven by wind, as well as waterwheels pulled by oxen, waterwheels and human-driven waterwheels. These waterwheels have made historic contribu...

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Problems solved by technology

[0005] The purpose of the present invention is to develop a micro-lift rotary scraper pump in order to solve the defects of low operating efficiency, unstable unit, energy waste, and large hydraulic loss of the tank when using a low-lift axial flow pump in the current low-lift working condition. , but there is still a lack of a device for testing the performance of the micro-lift rotary scraper pump. A new micro-lift rotary scraper pump performance test device is proposed, which can solve the above-mentioned deficiencies in the prior art. For the new micro-lift rotary scraper pump It is of great significance to improve the pump performance in extremely low head operation conditions

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