A non-return valve for a self-priming system of a large-flow self-priming centrifugal pump
A technology of self-priming system and centrifugal pump, which is applied to components, pumps, driving pumps, etc. of elastic fluid pumping devices, and can solve the problem that the self-priming performance of large-flow self-priming centrifugal pumps is difficult to meet the needs of water-saving and energy-saving irrigation and the market The needs of the new self-priming structure and self-priming principle are not deep enough, and the self-priming centrifugal pump self-priming principle and structural form are single, so as to achieve the effect of simple structure, low cost and convenient assembly and maintenance.
Active Publication Date: 2017-12-05
JIANGSU UNIV
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Problems solved by technology
[0002] Through extensive market research on large-flow self-priming centrifugal pump units, the existing problems of large-flow self-priming centrifugal pump units are summarized: the self-priming principle and structure of self-priming centrifugal pumps are single, the new self-priming structure and self-priming The research on the principle is not deep enough, and the self-priming performance of large-flow self-priming centrifugal pumps is difficult to meet the needs of water-saving and energy-saving irrigation and the market; domestic manufacturers of large-flow self-priming centrifugal pump units are few, and among domestic self-priming centrifugal pump manufacturers , mainly producing self-priming centrifugal pumps with internal mixing and external mixing structures, lack of innovation, and cannot solve the self-priming performance of large-flow self-priming centrifugal pumps
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[0017] The technical solution of the present invention will be described in more detail below in conjunction with the accompanying drawings.
[0018] Such as figure 1 As shown, a check valve of a large flow self-priming centrifugal pump self-priming system includes a suction section 1, a valve box 4 is installed on the suction section 1, and a valve box 4 is installed between the valve box 4 and the suction section 1. There is a valve seat 3, and a through hole is arranged on the valve seat 3, and the through hole communicates the valve box 4 with the suction section 1; the check valve 5 is installed in the through hole, and the check valve The valve 5 is connected with the through-hole sliding pair; the valve box 4 is equipped with a nozzle inlet pipe 7 and a jet nozzle 6 . The valve seat 3 is provided with a valve seat arc surface 3-1 around the through hole, the check valve 5 is a four-claw bowl check valve, and the four-claw bowl check valve is located in the valve box O...
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The invention relates to a check valve for a self-priming system of a large-flow self-priming centrifugal pump, which comprises a suction section, a valve box is installed on the suction section, and a valve seat is arranged between the valve box and the suction section. The valve seat is provided with a through hole, and the through hole communicates the valve box with the suction section; a check valve is installed in the through hole, and the check valve is slidably connected to the through hole; A nozzle intake pipe and a jet nozzle are installed on the valve box. The beneficial effects of the invention are: simple structure, reliable action, good sealing performance, easy casting, convenient assembly and maintenance, low cost and the like.
Description
technical field [0001] The invention relates to a check valve of a novel large-flow self-priming centrifugal pump self-priming system. Background technique [0002] Through extensive market research on large-flow self-priming centrifugal pump units, the existing problems of large-flow self-priming centrifugal pump units are summarized: the self-priming principle and structure of self-priming centrifugal pumps are single, the new self-priming structure and self-priming The research on the principle is not deep enough, and the self-priming performance of large-flow self-priming centrifugal pumps is difficult to meet the needs of water-saving and energy-saving irrigation and the market; domestic manufacturers of large-flow self-priming centrifugal pump units are few, and among domestic self-priming centrifugal pump manufacturers , mainly producing self-priming centrifugal pumps with internal mixing and external mixing structures, lack of innovation, and cannot solve the self-pr...
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IPC IPC(8): F04D9/02F04D29/00
Inventor 常浩施卫东刘建瑞刘博文高振军武永生李小为
Owner JIANGSU UNIV