Mute check valve
A check valve and mute technology, applied in the direction of valve details, control valves, valve devices, etc., can solve the problems of easily damaged connecting parts, scrapped mute check valves, large torque, etc., to reduce torque, reduce arm, and easy The effect of replacement
Inactive Publication Date: 2010-06-16
GUANGDONG LIANSU TECH INDAL
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Problems solved by technology
In the silent check valve disclosed in this utility model, since the guide body is fixedly installed at the rear end of the valve body, and the connection between the guide body and the valve disc is provided by a guide shaft at the front end of the guide body, and the guide shaft is matched with the valve disc, so When in use, the collision between the disc and the guide body occurs at the front end of the guide body, while the connecting parts for fixing the guide body to the valve body are arranged at the rear end of the guide body, so the disc and the guide body collide with each other at the front end of the guide body. Compared with the connection parts at the rear end of the guide body, the collision between the guide bodies has a longer moment arm and a larger moment, so after a period of use, the connection parts are easily damaged, resulting in the scrapping of the entire silent check valve
Method used
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[0021] The present invention will be further described below in conjunction with the accompanying drawings.
[0022] The structure of the present invention is as attached figure 1 As shown, it is composed of a housing 1, a sealing ring 2, a fairing 11, a guide body 10, a central shaft 12, and a closing spring 9.
[0023] as attached figure 2 , 3 Shown is the structure of the guide body 10 , which is composed of a core body 101 , a support ring 104 , and a shaft hole 106 . Its overall feature is a streamlined rotary body along the valve axis. The core body 101 is a streamlined rotating body with the valve axis as the axis, and at its tail there is a mounting ring 104 supported by several support plates 1042, and the cylindrical surface 1041 of the mounting ring 104 is used for mounting on the housing 1 . There is also a shaft hole 106 on the core body 101, and the shaft hole 106 is a blind hole whose axis coincides with the axis of the core body. The front end surface 10...
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The invention provides a mute check valve, which comprises a shell, a spring, a diffuser and a rectifying cover. A main body of the diffuser is a streamline rotary body taking an axis of the check valve as an axle center; the tail part of the diffuser is provided with a mounting ring; the mounting ring is arranged on a mounting groove which is formed near a water outlet of the shell; the tail end of the diffuser is provided with an axle hole; the axis of the axle hole is superposed with the axis of the diffuser; a central shaft, which extends to the front end face of the diffuser, is arranged on the axle hole; and the rectifying cover is arranged on the central shaft through a shaft sleeve.
Description
technical field [0001] The invention belongs to the field of check valve manufacture, in particular to a silent check valve. Background technique [0002] Check valves are the basic components of fluid control engineering and are widely used. It plays a role in protecting other fluid machinery and pipeline safety by preventing fluid backflow. The closing speed of the valve plate in the traditional check valve is very fast. Generally, the check valve is installed on the pipeline connected to the outlet end of the machine pump, and is close to the outlet end of the machine pump to prevent the reverse flow of the fluid in the pipe from causing damage to the machine pump. The destruction of the pump plays a protective role. At present, the most widely used in pipeline systems are swing check valves and lift check valves. When the downstream valve is closed in a short period of time, water hammer will occur in the pipeline system. The check valve will automatically close due t...
Claims
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IPC IPC(8): F16K15/06F16K47/02
Inventor 杨继跃黄虹宾
Owner GUANGDONG LIANSU TECH INDAL