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Damping cushion valve rod

A cushion valve and valve stem technology, which is applied in the direction of sliding valves, valve devices, engine components, etc., can solve the problems of reduced service life, failure to play a sealing role, and affect sealing, and achieve the effect of improving service life

Inactive Publication Date: 2016-01-13
SUZHOU SONGSHUN HARDWARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The slab gate valve is sealed by pushing the gate plate to the outlet valve seat by the pressure of the medium at the valve inlet, so closing the slab gate valve tightly will not only fail to achieve a good sealing effect, but will damage the seat and gate plate and affect the seal. , during use, the unnecessary vibration generated greatly reduces the service life, and this phenomenon often occurs in actual work

Method used

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  • Damping cushion valve rod

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Embodiment Construction

[0012] The present invention is described below in conjunction with accompanying drawing.

[0013] attached figure 1 It is a shock-absorbing and cushioning valve stem according to the present invention, which includes a casing 1, a valve seat 2 and a valve stem 3; the valve seat 2 is installed inside the casing 1; one end of the valve stem 3 is connected to the valve seat 2, The other end protrudes from the shell 1; the bottom of the valve stem 3 is welded with a limit block 4; the limit block 4 is arranged in the valve seat 2 and can move along the inner wall of the valve seat 2; the limit block 4 and the valve seat 2 There is a damping spring 5 between them; a guide column 6 is also provided between the valve seat 2 and the shell 1; the limit block 4 can move along the guide column 6; the valve stem 3 and the valve seat 2 There is also a wear-resistant pad 7 between them; the valve seat 2 is provided with a buffer block 9 at the other end of the limit block 4; a sealing rin...

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Abstract

The invention discloses a damping cushion valve rod which comprises a shell, a valve seat and a valve rod body. The valve seat is installed in the shell. One end of the valve rod body is connected to the valve seat, and the other end of the valve rod body stretches out of the shell. A limiting block is welded to the bottom of the valve rod body and arranged in the valve seat and can move along the inner wall of the valve seat. A damping spring is arranged between the limiting block and the valve seat. A guiding pillar is arranged between the valve seat and the shell. The limiting block can move along the guide pillar. A wear resistance cushion is further arranged between the valve rod body and the valve seat. A cushion block is arranged at the position, in the valve seat, at the other end of the limiting block. According to the scheme, the valve seat is installed in the shell, the limiting block is welded to the bottom of the valve rod body, the damping spring is arranged between the limiting block and the valve seat, so that when the damping cushion valve rod is used and the valve rod body is stressed, the pressure exerted on the valve rod body is relieved and reduced through the damping spring, the valve rod body vibrates to cushion unloading force to collide with the cushion block, it is ensured that the valve seat is cushioned, and the service life of the valve rod body is greatly prolonged.

Description

technical field [0001] The invention relates to a shock-absorbing and buffering valve stem, which belongs to the technical field of flat gate valves. Background technique [0002] The slab gate valve is sealed by pushing the gate plate to the outlet valve seat by the pressure of the medium at the valve inlet, so closing the slab gate valve tightly will not only fail to achieve a good sealing effect, but will damage the seat and gate plate and affect the seal. , During the use process, the unnecessary vibration generated greatly reduces the service life, and this phenomenon occurs from time to time in actual work. Contents of the invention [0003] In view of the above-mentioned existing technical problems, the purpose of the present invention is to propose a shock-absorbing valve stem that can reduce machine vibration and prolong its service life. [0004] The technical solution of the present invention is realized as follows: a shock-absorbing and buffering valve rod, in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/30F16K3/02
CPCF16K3/30F16K3/02
Inventor 归杏花
Owner SUZHOU SONGSHUN HARDWARE
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