One-way valve

A technology of one-way valve and valve body, which is applied in the direction of control valve, valve device, function valve type, etc., can solve the problems of poor stability, short service life and poor sealing performance of one-way valve, so as to prevent friction, improve service life and high The effect of concentricity

Inactive Publication Date: 2013-05-08
闽侯福怡塑料制品有限公司
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  • Abstract
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Problems solved by technology

[0004] The invention proposes a one-way valve, which solves the defects of poor stability, low sensiti

Method used

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  • One-way valve
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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] refer to Figure 1-2 The one-way valve includes: a valve body 1, a main through hole 13 is arranged on the valve body 1, a limiting device 12 is fixedly arranged on the inner wall of the main through hole 13, and the lower end surface of the limiting device 12 is a tapered surface , the upper end of the valve body 1 is fixedly provided with a locking part 11; the valve core 2 includes an upper guide part 21, a tapered part 22, a middle guide part 23, an...

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Abstract

The invention provides a one-way valve which comprises a valve body. A main through hole is formed in the middle of the valve body and a valve element. A limiting device is fixedly arranged on the inner wall of the main through hole. The lower end face of the limiting device is a cone-shaped face. A position clamping part is fixedly arranged at the upper end of the valve body. The valve element comprises an upper guiding part, a cone-shaped part, a middle guiding part, an annular groove, a protruding shoulder and a lower guiding part, wherein the upper guiding part, the cone-shaped part, the middle guiding part, the annular groove, the protruding shoulder and the lower guiding part are fixedly connected in sequence. An elastic sealing device is arranged on the annular groove. The valve element is arranged in the main through hole in a sliding and sleeved mode. The elastic sealing device is not lower than the lower end cone-shaped face of the limiting device. The one-way valve is high in stability, high in sensitivity, not worn easily, good in sealing performance and long in service life.

Description

technical field [0001] The invention relates to the field of valves, in particular to one-way valves. Background technique [0002] Check valve, also known as check valve or check valve, is used in pneumatic system or hydraulic system to prevent the reverse flow of fluid. When used as a liquid flow control in a high-pressure system, because the liquid flow has the characteristics of high pressure (usually 25MPa600MPa) and fast frequency (usually 120 times / minute or more), the frequent opening and closing actions between the valve core and the valve body, It is very easy to cause inaccurate alignment between the valve body and the valve core or wear of the contact line, making the seal between the valve core and the flow channel orifice of the valve body unstable; experiments have shown that a check valve with a common structure, such as The valve core has a spherical structure, and its service life is only about 50,000 times under the high pressure of 200MPa, while the coni...

Claims

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Application Information

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IPC IPC(8): F16K15/06
Inventor 马友朝
Owner 闽侯福怡塑料制品有限公司
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