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High-performance silent slow-closing check valve

A high-performance, check valve technology, applied in the direction of functional valve type, valve details, control valve, etc., can solve the problems of damage to the sealing pair, high noise, and only the entire valve can be replaced, so as to reduce water hammer and water head The effect of small loss and obvious effect

Inactive Publication Date: 2017-01-04
YINGNUOWEI VALVE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of high noise and serious damage to the sealing pair when the check valve is frequently switched on and off, and only the whole valve can only be replaced during maintenance.

Method used

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  • High-performance silent slow-closing check valve
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  • High-performance silent slow-closing check valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: A high-performance silent slow-closing check valve, including a valve body 1, a valve seat 2 and a valve disc 3, a valve body channel is arranged in the valve body, and both sides of the valve seat are detachably fixedly connected with the valve body 1. The central part of the valve seat extends into the passage of the valve body inside the valve body. The cross-section of the matching surface of the central part of the valve seat and the disc is an inclined plane so that the disc is inclined when the disc is sealed. A connecting rod 4, one end of the first connecting rod is connected with the second connecting rod 5, the side of the valve body away from the valve seat is provided with a cylinder 6, the cylinder is provided with a piston 7, the cylinder The first spring 8 and the second spring 9 are respectively arranged on both sides of the length direction in the body and the first spring and the second spring are respectively located on both sides of the...

Embodiment 2

[0019] The difference between Embodiment 2 and Embodiment 1 is that an inspection port is provided on the side of the radial valve body located in the passage of the valve body. on the top cover.

Embodiment 3

[0020] Embodiment 3 differs from Embodiment 1 in that: the wire diameter of the first spring is larger than that of the second spring or the wire diameter of the second spring is larger than the first spring or the wire diameters of the first spring and the second spring are equal.

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Abstract

The invention discloses a high-performance silent slow-closing check valve, which comprises a valve body, a valve seat, and a valve clack. A valve body passage is disposed in the valve body. Two sides of the valve seat are in detachably fixed connection with the valve body, and a middle part of the valve seat extends into a cavity within the valve body. A first connecting rod is connected to one face, opposite a sealing face of the valve clack, of the valve seat, and a second connecting rod is connected to one end of the first connecting rod. A cylinder is disposed at one side, far away from the valve seat, of the valve body. A piston is disposed in the cylinder, and a first spring and a second spring are disposed at two sides within the cylinder, respectively. A piston rod is connected to one side of the piston, and one end of the piston rod is connected to the second connecting rod. With such a structure, the valve body is reliably connected to the valve seat; for usual leakage, the valve seat is detached and then treated without entire replacement, and convenient and rapid repair or field maintenance is achieved. The design of the valve body with a large expanded cavity allows an obvious silent effect, and the arrangement of the cylinder allows easy opening and slow closing of the valve clack.

Description

technical field [0001] The invention relates to a check valve, in particular to a high-performance silent slow-closing check valve. Background technique [0002] Check valves are usually used at the outlet of pumps in water supply and drainage, sewage treatment and other working conditions. They have the functions of cutting off the reverse flow of water, protecting the pump and improving the working efficiency of the pump. At present, the commonly used swing check valve has a large stroke, high noise during frequent switching, and serious damage to the sealing pair, resulting in shortened service life. When maintenance is required, only the entire valve can only be replaced, which increases operating costs. Contents of the invention [0003] The purpose of the present invention is to solve the problems of high noise and serious damage to the sealing pair under the condition of frequent switching of the check valve, and the problem that only the whole valve can only be rep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/03F16K47/02
CPCF16K15/033F16K47/023
Inventor 冯立斌杨凌杰雷鹏吴劲松王园汪小峰朱丹晨
Owner YINGNUOWEI VALVE IND
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