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Straight pipe type check valve

A check valve, straight-pipe technology, applied in valve details, control valves, valve devices, etc., can solve the problems of high resistance and low sensitivity of the check valve plate, reduce resistance, improve sensitivity, Enhanced sealing effect

Inactive Publication Date: 2021-08-27
唐佳丽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention is mainly used to solve the problems of high valve plate resistance and low sensitivity of the check valve in the prior art

Method used

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  • Straight pipe type check valve
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Experimental program
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Effect test

Embodiment Construction

[0035] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0036] Such as figure 1 , figure 2 and Figure 4 As shown, a straight pipe check valve includes No. 1 valve body 1, No. 2 valve body 2, barrier member 3, water blocking member 4 and support frame 5; said No. 1 valve body 1 and said No. 2 valve body No. 1 valve body 2 is fixedly connected; one end of the No. 1 valve body 1 is provided with a water inlet pipe 6; one end of the water inlet pipe 6 is provided with the support frame 5; the support frame 5 is inside the No. 1 valve body 1; The supporting frame 5 is fixedly connected with the No. 1 valve body 1; the water blocking member 4 can slide in the water inlet pipe 6 and the supporting frame 5; the water blocking member 4 is used to prevent the The water in No. 1 valve body 1 returns; the wat...

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Abstract

The invention belongs to the technical field of check valves, and particularly relates to a straight pipe type check valve. The straight pipe type check valve comprises a first valve body, a second valve body, a partition piece, a water blocking piece and a supporting frame. According to the straight pipe type check valve, liquid enters a water inlet pipe from a water inlet end, the water blocking piece is pushed to the position of the supporting frame, then the liquid flows into the second valve body through the first valve body, and finally the liquid flows out of one end of the second valve body; when the liquid at the water inlet end stops flowing, the pressure of the liquid at the water inlet end is reduced, so that the liquid in the first valve body and the second valve body flows reversely, the water blocking piece is driven to slide into the water inlet pipe from the interior of the supporting frame, and then the liquid is prevented from flowing backwards; due to the fact that the water blocking piece is in sliding connection with the water inlet pipe, the moving resistance of the water blocking piece is small, when the pressure at the two ends of the water blocking piece changes, the water blocking piece can react rapidly to seal the water inlet pipe, and the sensitivity of the straight pipe type check valve is improved; and due to the fact that the sealing performance between the water blocking piece and the water inlet pipe is good, the sealing performance of the straight pipe type check valve is enhanced when the straight pipe type check valve carries out non-return on the liquid.

Description

technical field [0001] The invention belongs to the technical field of check valves, in particular to a straight pipe check valve. Background technique [0002] Check valve refers to a kind of valve whose opening and closing parts are circular discs, which can block the reverse flow of medium by acting on its own weight and medium pressure. It is an automatic valve, also known as check valve, one-way valve, return valve or isolation valve. The disc movement mode is divided into lift type and swing type. The lift check valve is similar in structure to the globe valve, except that it lacks the valve stem to drive the disc. The medium flows in from the inlet port (lower side) and flows out from the outlet port (upper side). When the inlet pressure is greater than the sum of disc weight and its flow resistance, the valve is opened. Conversely, the valve is closed when the medium flows backwards. The swing check valve has an oblique disc that can rotate around the axis, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/00F16K15/14F16K27/04F16K27/02
CPCF16K15/00F16K15/141F16K15/144F16K27/0236F16K27/041
Inventor 唐佳丽
Owner 唐佳丽
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