Big-flow self-priming centrifugal pump

A self-priming pump and centrifugal pump technology, applied in the field of large-flow self-priming centrifugal pumps, can solve the problems of increasing the surface area of ​​the jet, low pump efficiency, slow water filling speed, etc. Effect

Inactive Publication Date: 2009-01-14
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the existing large-flow self-priming pumps, such as slow water supply speed and low pump efficiency, the present invention provides a multi-nozzle self-priming pump. The rectangular nozzle divides the limited flow of a self-priming pump into multiple rectangular jets, thereby increasing the surface area of ​​the jets and achieving the problem of increasing the water supply speed of a large-flow self-priming pump

Method used

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  • Big-flow self-priming centrifugal pump
  • Big-flow self-priming centrifugal pump

Examples

Experimental program
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Embodiment Construction

[0025] In Fig. 1, impeller shaft (1), impeller (2), shaft seal (3), rectangular nozzle group (5), S-shaped elbow (9), water pump outlet diffuser pipe (11), water pump outlet diffuser The large channel (10) between the pipe and the inlet of the nozzle forms the main part of this embodiment together with the self-priming pump housing (6), and the spring (7) and valve plate (8) are used to close the opening of the rectangular nozzle group (5). The inlet can improve the water pump efficiency of the present embodiment. The irrigation hole plug (14) is used to open the irrigation hole before starting, and the working machine (electric motor or internal combustion engine, etc.) passes through the working machine coupling frame (4) and the impeller shaft (1) Integrating with the present embodiment, the water inlet pipeline (12) is connected to the upper end of the S-shaped elbow (9), and the water outlet pipeline (13) is connected to the top of the outlet diffusion pipe (11) of the wat...

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Abstract

The invention relates to a high flow self-adsorption centrifugal pump, which arranges an S-shape tube inside the case of said pump. Wherein, the upper end of said S-shape tube is connected to the inlet pipeline, while its lower end is through to the inlet of blade wheel; a group of rectangle nozzles which point to the inlet is mounted at the outer side of said S-shape tube; a big channel for connecting the outlet expansion pipe and the rectangle nozzle is arranged inside the pump; and a valve plate is arranged at the inlet of rectangle nozzle with / without spring. The invention has the advantages that: it can reduce the volume of pump, improve the pumping speed, and increase the pumping range and delivery lift (without mounting valve at the nozzle inlet).

Description

Technical field [0001] The present invention is a large-flow self-priming centrifugal pump, referred to as self-priming pump, which belongs to the general mechanical product - pump category, especially can rely on a small amount of water stored in the pump, use the centrifugal impeller to pump out the air in the water inlet pipeline, and use atmospheric pressure to pump out the water. A self-priming pump that is drawn up from the water in the inlet pool below the pump inlet. Background technique [0002] At present, the known self-priming pumps are divided into internal mixing type and external mixing type, and the internal mixing type is divided into two types: injection device and no injection device. The internal mixing type self-priming pump with injection device has fast water supply, The advantage of high suction lift has been widely used in small self-priming pumps. This injection device is actually a jet pump, which is mainly composed of nozzles, mixing chambers and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D9/06
Inventor 陆伟刚刘建瑞施卫东
Owner JIANGSU UNIV
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