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Middle-connecting type vertical self-priming centrifugal pump

A centrifugal pump, Zhonglian technology, applied in the field of Zhonglian vertical self-priming centrifugal pump, can solve the problems of poor self-priming effect, large volume, affecting the working performance of the pump, etc., and achieve the effect of preventing backflow and ensuring working performance.

Inactive Publication Date: 2009-11-25
宝应县航海机械厂
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Among them, the water ring wheel type and the jet type have defects such as poor self-priming effect and large volume, while the gas-liquid hybrid self-priming centrifugal pump has better comprehensive performance, so it is widely used, but there is a problem that the water in the pump body flows back through the suction pipe. problems, thus affecting the performance of the pump

Method used

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  • Middle-connecting type vertical self-priming centrifugal pump

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Embodiment Construction

[0010] The present invention comprises a pump body with a pump chamber and an impeller 9 driven by a motor 1 through a pump shaft 14 in the pump body 12. A suction pipe 18 and a discharge pipe 8 communicating with the pump body 12 are provided in the pump body 12. The pump body 12 is provided with a guide vane 11 corresponding to the impeller 9, and a water inlet glue valve 16 is provided at the suction pipe 19. There is a radial gap of 2-3mm between the guide vane 11 and the impeller 9, the inner wall of the guide vane 11 is formed with a flow channel facing the outer peripheral side of the impeller 9, the upper part of the guide vane 11 is provided with a return hole 10, the entrance of the impeller 9 and Sealing rings 17 and 18 are arranged between the pump body 12, and the sealing gap is between 0.3-0.5mm, and the motor 1 is arranged on the motor frame 6.

[0011] The pump shaft 14 of the present invention is connected through the pump coupling 4, the intermediate coupling...

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Abstract

The invention relates to a middle-connection type vertical self-priming centrifugal pump which belongs to a pump and comprises a pump body provided with a pump cavity, and an impeller positioned in the pump body and driven by a motor through a pump shaft, wherein the pump body is internally provided with a suction pipe and a discharge pipe which are communicated with the pump body, the pump body is internally provided with a guide blade corresponding to the impeller, and the suction pipe is provided with a water inlet one-way rubber valve. The invention effectively prevents water in the pump body from reflowing through arranging the water inlet rubber valve at the suction pipe and ensures the working property of the self-priming pump.

Description

technical field [0001] The invention relates to a pump, in particular to a mid-coupled vertical self-priming centrifugal pump with self-priming capability. Background technique [0002] In order to solve the problem that the ordinary centrifugal pump must pour enough water into the pump body (or the suction pipeline is filled with water) before starting each time, the pump can work normally, which is very inconvenient. As for the self-priming centrifugal pump, as long as enough water is poured into the pump body when it is started for the first time, it can run normally in a relatively short period of time by the action of the pump itself. At present, the common self-priming centrifugal pumps are divided into three types, which are gas-liquid hybrid type, water ring wheel type, and jet type. After turning, there is a certain amount of water in the pump body. After the pump is started again, due to the rotation of the impeller, the air and water in the suction pipeline are f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D9/00F04D29/00F04D29/24F04D29/08F04D1/00F04D13/06
Inventor 陈寿东李洪凌贤金
Owner 宝应县航海机械厂
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