Multifunctional check valve

A check valve, multi-functional technology, applied in the direction of functional valve type, lift valve, control valve, etc., can solve the problems that cannot meet the use requirements well, the sealing ring is easy to age, and the sealing performance is poor, so as to achieve the check effect Good, good sealing effect, long service life

Inactive Publication Date: 2015-04-01
DAFENG NANYA VALVE
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  • Summary
  • 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 poor check effect during use, and will easily lead to check failure after a long time. Short, at the same time, the sealing performance between the valve disc and the valve seat of the multi-function check valve is poor, and the sealing ring is easy to age after a long time, causing liquid leakage, which cannot meet the requirements of use well

Method used

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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 , figure 2 As shown, the multi-function check valve includes: a valve body 1 and a valve cover 2, the valve body 1 and the valve cover 2 are connected by bolts 3 and nuts 4, and an inlet passage is arranged in the valve body 1 5 and the outlet passage 6, a valve seat 7 is provided on one side of the inlet passage 6 inside the valve body 1, a sealing ring 8 is provided on the valve seat 7, and a valve seat 7 is provided in the valve seat 7 to communicate with the inlet passage 5 The channel 9 of the valve body 1 is provided with a valve disc 10 that cooperates with the valve seat 7. The upper end of the valve disc 10 is connected with a valve stem 11, and the upper end of the valve stem 11 is slidably arranged on the valve cover. 2 In the chute 12 inside, a spring 13 and a pressure block 14 ar...

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Abstract

The invention discloses a multifunctional check valve. The multifunctional check valve comprises a valve body and a valve cover, wherein the valve body is connected with the valve cover by a bolt and a nut; the valve body is internally provided with an inlet channel and an outlet channel; a valve seat is arranged on one side of the inlet channel in the valve body; a sealing ring is arranged on the valve seat; a valve clack which is matched with the valve seat is arranged in the valve body; the upper end of the valve rod is slidingly arranged in a slide groove in the inner side of the valve cover; a spring and a pressing block are arranged in the slide groove; an adjusting screw rod is arranged on the upper end of the valve cover; the valve clack on the inner side of the sealing ring is provided with a secondary sealing ring; the valve seat is provided with a secondary sealing groove which is matched with the secondary sealing ring; the valve clack is further provided with a plurality of top pressure channels; the upper ends of the top pressure channels are communicated with an outlet channel; the lower ends of the top pressure channels correspond to the sealing ring and the secondary sealing ring; the plurality of top pressure channels are communicated by a plurality of connection channels arranged in the valve clack.

Description

technical field [0001] The invention relates to a valve, in particular to a multifunctional 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 poor check effect during use, and will easily lead to check failure after a long time. At the same time, the sealing performance between the valve disc and the valve seat of the multi-function check valve is poor, and the sealing ring is easy to age after a long time, causing liquid leakage, 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 multifunctional check valve with good sealing effect. [0004] In order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a multifunctional check valve, comprising: a valve body and a valve cove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/02
CPCF16K15/063F16K1/36F16K1/46
Inventor 王亚军
Owner DAFENG NANYA VALVE
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