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Vent valve structure

A technology of vent valve and vent channel, which is applied in the direction of valve shell structure, valve details, safety valve, etc., can solve problems such as oil leakage, achieve the effects of preventing oil leakage, simple production, and solving oil leakage

Active Publication Date: 2014-01-29
ZHEJIANG GEELY HLDG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a vent valve structure, which prevents the leakage of oil from the vent valve by utilizing good sealing performance, realizes the backflow of oil through the labyrinth vent channel, and solves the problem of oil leakage during the discharge process

Method used

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, specific embodiments will be described in detail below with reference to the accompanying drawings.

[0029] Such as figure 1 As shown, the embodiment of the present invention provides a ventilation valve structure, including: a valve cover 1, a valve body 2; an O-ring notch 3 is provided on the valve body 2; Body interference fit O-ring; valve body 2 is provided with a labyrinth ventilation channel capable of condensing oil vapor in gas.

[0030] It can be seen that in the embodiment of the present invention, an O-ring notch is provided on the valve body, and an O-ring with an interference fit with the box body is installed in the notch to ensure good sealing between the vent valve and the box body , Solved the problem of oil leakage of the vent valve. The oil in the evaporating gas can be condensed by setting the labyrinth ventilation channel, and...

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PUM

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Abstract

The invention discloses a vent valve structure which comprises a valve cover (1) and a valve body (2). The valve body (2) is provided with an O-shaped ring notch (3), and an O-shaped ring which can be in interference fit with a box body is arranged in the O-shaped ring notch (3). The valve body (2) is provided with a labyrinth type ventilation channel which can condensate oil vapor in gas. According to the vent valve structure, the good sealing performance is used for preventing oil liquid from being leaked from a ventilation valve, oil liquid backflow is achieved through the labyrinth type ventilation channel, and the problem of oil liquid leaking in the discharging process is solved. The vent valve structure is reliable in structure, simple in manufacturing and convenient to mount.

Description

technical field [0001] The invention relates to the field of valves, in particular to a ventilation valve structure. Background technique [0002] For box-type machines, such as transmissions, reducers, etc., due to the high-speed rotation of the internal gears, a lot of heat and high pressure will be generated. If the high-pressure gas and heat are not discharged in time, it will cause the risk of lubricating oil leakage and shell expansion. The function of the vent valve is to keep the internal gas connected to the atmosphere and the air pressure to be balanced. [0003] At present, the normally open vent valve structure used in transmissions and other box structures is usually composed of two parts: a plug cap and a plug body. . [0004] Due to the unreliability of the threaded seal or the interference fit seal itself, oil leakage often occurs at the connection when the traditional vent valve is used, and this structure cannot prevent the risk of oil splashing when the ...

Claims

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Application Information

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IPC IPC(8): F16K17/02
CPCF16K27/00
Inventor 郭清臣陈勇罗大国陈华汤天宝冯擎峰
Owner ZHEJIANG GEELY HLDG GRP CO LTD
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