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Piston type spool structure and method of rigid ring surface combined with flexible base surface

A piston valve, rigid ring technology, applied in the device for pressure relief on the sealing surface, lift valve, valve details, etc. The effect of convenient manufacture and simple structure

Active Publication Date: 2020-08-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the phenomenon of unbalanced force on the existing piston-type valve core, and provide a piston-type valve core structure with a rigid ring surface combined with a flexible base surface

Method used

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  • Piston type spool structure and method of rigid ring surface combined with flexible base surface
  • Piston type spool structure and method of rigid ring surface combined with flexible base surface
  • Piston type spool structure and method of rigid ring surface combined with flexible base surface

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Such as figure 1 , figure 2 Shown is a piston-type spool structure with a rigid annular surface combined with a flexible base surface in a preferred embodiment of the present invention, and the piston-type spool structure is used to be installed above the valve seat 5 . Its main structure includes a connecting piece 2 and a piston valve core 1 , a flexible base surface 4 and a rigid ring surface 3 which are stacked and assembled sequentially from top to bottom.

[0026] Wherein, the piston type spool 1 is in the form of a cylinder with a flat bottom surface. The flexible base surface 4 is an irregular convex surface with thin edges and thick middle. The edge is used as a fixed part. The flexible base surface 4 is made of flexible material, which can deform when the bottom surface is subjected to external force. In this embodiment, the material of the flexi...

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Abstract

The invention discloses a piston-type valve core structure and a method thereof with a rigid ring surface combined with a flexible base surface. The spool structure includes a piston-type spool, a flexible base surface, a rigid ring surface and connecting pieces assembled sequentially from top to bottom; the bottom surface of the piston-type spool is flat; the flexible base surface is thin at the edge and thick in the middle, and The bottom surface of the piston valve core is an ellipsoidal convex surface; the flexible base surface is made of flexible material, which can be deformed when the bottom surface is subjected to external force; The contact surface between the structure and the valve seat; the rigid annulus is coaxially arranged on the edge of the bottom surface of the flexible base surface, and with the bottom surface of the piston valve core as the reference, the central protrusion height of the ellipsoidal convex surface of the flexible base surface is greater than that of the rigid annulus. The height; the connecting piece is used to connect the various structures to assemble them into a whole. The invention can be used to overcome the unbalanced moment on the bottom surface of the valve core, has a simple structure and can be widely popularized and applied.

Description

technical field [0001] The invention relates to a piston type valve core structure, in particular to a piston type valve core structure with a rigid ring surface combined with a flexible base surface and a method for overcoming unbalanced moment. Background technique [0002] In a horizontally arranged valve with a piston-type spool structure, the force on the bottom surface of the spool shows an obvious unbalanced phenomenon, and the pressure on the lower surface of the spool bottom near the fluid outlet side is greater than that near the fluid inlet side. , the unbalanced pressure distribution causes an unbalanced moment on the bottom surface of the valve core, and causes the wall of the valve core to be squeezed against the sealing part, which not only increases the driving energy consumption, affects the sealing performance, and even causes the valve to leak under the condition of large flow invalidated. [0003] In the current piston valve structure on the market, ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/36
CPCF16K1/36F16K39/022F16K1/46F16K1/54
Inventor 钱锦远母娟侯聪伟金志江
Owner ZHEJIANG UNIV
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