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Check valve structure

A check valve and spool technology, applied in the direction of control valves, valve devices, functional valve types, etc., can solve the problems of sealing surface damage, easy tilt, internal leakage and hard impact, etc., to achieve check function and reduce flow The effect of resistance

Active Publication Date: 2013-09-04
SUZHOU DELAN ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of valve is easy to tilt under the impact of backflow liquid, causing the sealing surface of the valve core and the valve seat to be inconsistent, and it is easy to produce traces of internal leakage and hard impact, resulting in damage to the sealing surface, affecting the check performance financial loss

Method used

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  • Check valve structure

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Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0015] like figure 1 The shown structure of a check valve of the present invention includes a medium channel 7 located inside the valve body, a valve core 2 located in the center of the medium channel, and a valve cover 1 that covers the upper part of the valve body. The bottom end of the valve cover is connected to the There is a rocker 4 at the center of the upper part of the spool, one end of the rocker is against the bottom surface of the valve cover, and the other end of the rocker is fixed on the spool; the outer surface of the spool is smooth and streamlined; The cross-sectional area gradually decreases along the direction of fluid flow.

[0016] In the check valve structure of the present invention, the tail of the valve core is provided with a tail fin 5; the tail fin rotates around the central axis of the valve core under fluid pressure, and its ro...

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Abstract

The invention provides a check valve structure. The check valve structure comprises a valve body, a medium passageway, a valve spool and a valve bonnet, the medium passageway is positioned in the valve body, the valve spool is positioned at the center of the medium passageway, the valve bonnet covers on the valve body, and a rocker rod is arranged at the bottom end of the valve bonnet and at the upper center of the valve spool. The check valve structure is characterized in the one end of the rocker rod butts against the lower bottom face of the valve bonnet while the other end of the rocker rod is fixed on the valve spool, the outer surface of the valve spool is smooth and streamline, and areas of cross sections of the valve spool gradually decrease along a flowing direction of fluid. The check valve structure is designed into a smooth streamline geometric shape via fluid analysis on the basis of the Venturi principle of fluid mechanics, and is capable of reducing pressure loss to the minimum, shortening a stroke, effectively lowering flowing resistance and realizing a non-return function.

Description

technical field [0001] The invention relates to a valve structure, in particular to a check valve structure. Background technique [0002] Check valve refers to the valve that relies on the flow of the medium itself to automatically open and close the valve core to prevent the backflow of the medium, also known as check valve, one-way valve, reverse flow valve or back pressure valve. The function of this type of valve is to only allow the medium to flow in one direction and prevent the reverse flow. However, this kind of valve is easy to tilt under the impact of backflow liquid, causing the sealing surface of the valve core and the valve seat to be inconsistent, and it is easy to produce traces of internal leakage and hard impact, resulting in damage to the sealing surface, affecting the check performance suffer economically. Contents of the invention [0003] The present invention is completed in order to solve the deficiencies in the prior art. The purpose of the prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/03
Inventor 王彪
Owner SUZHOU DELAN ENERGY TECH