Low-lift high-flow liquid delivery device

Abstract

The invention discloses a low-lift high-flow liquid delivery device. The low-lift high-flow liquid delivery device comprises a flow channel and an impeller, wherein the flow channel is composed of a bottom surface and two side surfaces; the impeller is arranged above the flow channel. The impeller is provided with a rotary driving device. The low-lift high-flow liquid delivery device is characterized in that the impeller is composed of a rotary shaft and a plurality of equilong center plates which are evenly arranged around the rotary shaft; the bottom surface is provided with an arc surface located below the impeller; the circle center of the arc surface and the center of the rotary shaft coincide; the central angle of the arc surface is larger than or equal to the value obtained after 360 degrees is divided by the number of the center plates; the output rotational speed of the rotary driving device is less than or equal to 60 rpm. The low-lift high-flow liquid delivery device has the advantages that the design of the low rotational speed less than 60 rpm is adopted; the high flow of the liquid delivery device is benefited by a water storage space formed among the impeller and all the surfaces of the flow channel; the liquid delivery device is high in efficiency, low in running noise and friendly to environment.

Description

technical field [0001] The invention relates to a liquid conveying device, in particular to a liquid conveying device with low head and large flow. Background technique [0002] In the ecological management of urban inland rivers, due to the slow flow of water bodies, the problems of black and odorous water bodies, algae growth and sediment deposition in rivers have been aggravated. Improving the fluidity of water bodies will effectively alleviate these problems. [0003] One way to improve the fluidity of urban inland river water is to pump the water from one end of the river to the other end, so that the water in the river can flow. The characteristics of the water transport are 0.1-0.3m low head and 1-10m 3 / s large flow. However, in the current liquid conveying device, the water body conveying with low lift and large flow is mainly accomplished by the axial flow pump. Through the study of the main parameters of the axial flow pump, it is not difficult to see that the h...

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Problems solved by technology

Therefore, the use of axial flow pumps to create flow in river water will cause a lot of waste of electric energy and high operating costs.

In addition, due to the high power and high speed of the axial flow pump, the noise during operation is relatively large; and due to the high speed of the axial flow pump, the impeller will cause great damage to small organisms in the river water body during operation, which is not conducive to building Good water ecological environment

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