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Diaphragm valve

A diaphragm valve and valve body technology, applied in the direction of lift valve, valve details, valve device, etc., can solve the problems of affecting the pressure resistance of the diaphragm valve, shortening the service life of the diaphragm valve, weakening the sealing effect, etc., so as to avoid mutual wear and improve the Pressure resistance performance, the effect of prolonging the service life

Pending Publication Date: 2022-06-24
KUNSHAN KINGLAI HYGIENIC MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the long-term use of the diaphragm valve, the frequent contact between the diaphragm and the valve seat leads to wear of the valve seat, which gradually weakens the sealing effect between the diaphragm and the valve seat, which in turn affects the pressure resistance of the diaphragm valve and shortens the life of the diaphragm valve. service life

Method used

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Embodiment Construction

[0033] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the accompanying drawings only show some but not all of the parts related to the present invention.

[0034] In the description of the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it...

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PUM

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Abstract

The invention relates to the technical field of diaphragms, in particular to a diaphragm valve. The diaphragm valve comprises a valve body, a valve element, a cap and a valve rod. An air inlet flow channel, an air outlet flow channel and a step groove are formed in the valve body, the step groove comprises a first cavity, a second cavity and a third cavity which are sequentially communicated, and a first step face is arranged between the first cavity and the second cavity. An air inlet of the air inlet flow channel can communicate with the air outlet flow channel through the first cavity. The valve element comprises a valve seat, a connecting piece and a diaphragm, the connecting piece is movably arranged in the stepped groove, the valve seat is arranged at the bottom of the connecting piece, and the diaphragm is fixedly arranged on the connecting piece in a sleeving mode and abuts against the first stepped face all the time. The cap is hermetically mounted in the third cavity, the valve rod hermetically penetrates through the cap and can move in the axial direction of the cap, the valve rod pushes the connecting piece to move towards the interior of the valve body, and the valve seat blocks the air inlet; or the connecting piece is pulled to move towards the outside of the valve body, and the valve seat opens the air inlet. The pressure resistance of the diaphragm valve can be improved, and the service life of the diaphragm valve can be prolonged.

Description

technical field [0001] The invention relates to the technical field of diaphragms, in particular to a diaphragm valve. Background technique [0002] The commonly used vacuum diaphragm valve uses the valve stem to directly press the rubber diaphragm on the valve seat to cut off or connect the valve body of the vacuum system. [0003] In the diaphragm valve, especially the high-pressure diaphragm valve includes a valve body, a valve seat, a diaphragm and a valve stem. The valve body has an intake flow channel and an outlet flow channel. Air connection. When the valve stem pushes the diaphragm to seal the valve seat, the diaphragm forms a seal with the valve seat and closes the intake port of the intake runner, thereby isolating the intake runner and the outlet runner from each other. When the valve stem pushes the diaphragm to separate from the valve seat, the intake port of the intake runner is opened, and the intake runner and the outlet runner communicate with each other....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/00F16K1/32F16K1/36F16K1/46F16K27/02F16K41/12
CPCF16K1/00F16K1/32F16K1/36F16K1/46F16K27/02F16K41/12
Inventor 黄文博陆文军聂敏
Owner KUNSHAN KINGLAI HYGIENIC MATERIALS