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Pressure self-sealing swing check valve

A self-sealing, swing-type technology, applied in the direction of valve details, control valves, valve devices, etc., can solve the problems that cannot meet the requirements of use, the sealing performance cannot meet the requirements, and the leakage of liquid media, etc., to meet the requirements of use Requirements, stable sealing effect, and the effect of preventing liquid leakage

Inactive Publication Date: 2014-07-02
DAFENG OKAY FLUID MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Check valves are used in pipelines in petroleum, chemical and other industries to cut off the liquid in the pipeline. The existing check valves have a relatively simple structure and can only play a one-way check function during use. It is relatively simple, and when a large flow of liquid medium passes through, the pressure is too high, the sealing performance between the valve body and the valve cover cannot meet the requirements, and it is easy to cause leakage of the liquid medium, which cannot well meet the use requirements

Method used

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  • Pressure self-sealing swing check valve

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Embodiment Construction

[0009] The specific content of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0010] Such as figure 1 As shown, the pressure self-sealing swing check valve includes: a valve body 1, an inlet passage 2 and an outlet passage 3 are arranged in the valve body 1, and one side of the inlet passage 2 is arranged inside the valve body 1 There is a valve seat 4, the valve seat 4 is provided with a passage 5 communicating with the inlet passage 2, and a valve disc 6 cooperating with the valve seat 4 is provided in the valve body 1, and the valve disc 6 is fixed by the fixing bolt 7 is fixed with one end of the rocker 8 arranged in the valve body 1, and the other end of the rocker 8 is set on the rocker seat 10 inside the valve body 1 through the pin shaft 9, and passes through the upper end of the valve body 1 The nut 11 is provided with a bonnet 12, the upper end of the bonnet 12 is provided with a lift...

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Abstract

The invention discloses a pressure self-sealing swing check valve which is good in sealing effect. The pressure self-sealing swing check valve comprises a valve body, wherein an inlet channel and an outlet channel are formed in the valve body, a valve seat is arranged on one side of the inlet channel inside the valve body, a channel which is communicated with the inlet channel is formed in the valve body, a valve clack which is matched with the valve seat is arranged in the valve body, the valve clack and one end of a rocking bar inside the valve body are fixed through a fastening bolt, the other end of the rocking rod is arranged on a rocking rod base inside the valve body through a hinge pin, a valve deck is arranged inside the upper end of the valve body through a nut, a lifting lug is arranged at the upper end of the valve deck, a soft stainless steel sealing ring is arranged between the nut and the valve deck, an oblique plane is arranged at the lower end of the soft stainless steel sealing ring and is matched with an oblique plane at the upper end of the valve deck, and hard alloy is arranged on the oblique plane at the lower end of the stainless steel sealing ring.

Description

technical field [0001] The invention relates to a valve, in particular to a pressure self-sealing swing check valve. Background technique [0002] Check valves are used in pipelines in petroleum, chemical and other industries to cut off the liquid in the pipeline. The existing check valves have a relatively simple structure and can only play a one-way check function during use. It is relatively simple, and when a large flow of liquid medium passes through, the pressure is too high, the sealing performance between the valve body and the valve cover cannot meet the requirements, and it is easy to cause leakage of the liquid medium, which cannot well meet the use requirements. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a pressure self-sealing swing check valve with good sealing effect. [0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a pressur...

Claims

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Application Information

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IPC IPC(8): F16K15/03F16K27/08
CPCF16K15/03F16K27/0227F16K27/08
Inventor 丁学峰蔡雷顾云飞
Owner DAFENG OKAY FLUID MACHINERY
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