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Double action type plug check valve

A check valve and double-acting technology, applied in the field of plug check valves and double-acting plug check valves, can solve the problems of unsatisfactory flow control and achieve reliable check sealing and flow control effects

Inactive Publication Date: 2014-12-17
JIANGSU EVALVE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This should have a certain effect on solving the sealing at low pressure, but it is obviously not ideal for flow control

Method used

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  • Double action type plug check valve
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  • Double action type plug check valve

Examples

Experimental program
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Effect test

Embodiment 1

[0014] The double-acting cock check valve of this embodiment is as figure 1 , figure 2 , image 3 Shown, the valve body 1 that has round-cut valve body channel is equipped with the bonnet 9 that covers valve body channel. Both sides of the channel of the valve body are respectively connected with an inlet channel IN and an outlet channel OUT whose outer end is a bell mouth. The inner end of the inlet passage IN forms a stop 1-1 extending into the valve body passage, and one side of the valve disc 2 that can open and close the stop is hinged to the valve body 1 through a vertical pin 5, which is opposite to the stop 1-1. The end face of 1 is embedded with sealing ring 3. The pin shaft 5 is equipped with a torsion spring 6 that makes the valve disc 2 tend to open. A matching C-shaped cross-section cock 7 is installed in the passage of the valve body. There is a chamfered rectangular window 7-1 on the opposite side of the C-shaped cross-section and the C-shaped opening. The ...

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Abstract

The invention relates to a double action type plug check valve, which belongs to the technical field of fluid control valves. Both sides of the valve body passage of the valve respectively communicate with an inlet passage and an outlet passage; an openable and closable valve clack is articulated with the inner end of the inlet passage, a plug with a C-shaped section is mounted in the valve body passage, one side of the C-shaped section, which is opposite to a C-shaped opening, is provided with a window, the plug is provided with a first limit position and a second limit position, and the window is completely closed by the valve body passage at the first limit position, and fully communicates with the outlet passage at the second limit position; at the first limit position, the inner side of the valve clack is tangent to the outer circle of the plug, closing the inlet passage, and at the second position, the valve clack enters the C-shaped section opening of the plug, opening the inlet passage. The double action type plug check valve has double closing actions, and thereby is still capable of reliable check and sealing under a low-pressure medium environment. Meanwhile, the double action type plug check valve can effectively control flow, and is highly reliable.

Description

technical field [0001] The invention relates to a cock check valve, in particular to a double-acting cock check valve, which belongs to the technical field of fluid control valves. Background technique [0002] Swing check valve is a commonly used valve. Existing valves of this type are mainly composed of pins, rockers, discs, etc. installed in the valve body. The common limitation is that they cannot control the flow rate in the pipeline, and the check seal is not reliable at low pressure. [0003] The search found that the Chinese invention patent with the application number of 201310097276.1 discloses a swing check valve, which includes a valve body and a valve cover arranged on the valve body, and an inlet channel and an outlet channel are arranged in the valve body. There is a valve seat on one side of the inlet channel, and a channel communicating with the inlet channel is arranged in the valve seat, and a valve disc that cooperates with the valve seat is arranged in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/10F16K15/03F16K5/08
CPCF16K15/1821F16K15/1848
Inventor 钱玉峰顾世军
Owner JIANGSU EVALVE GRP
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