An online maintenance gate device

Abstract

The invention discloses a gate type device with an online maintenance function. The gate type device is characterized in that a switching sleeve is arranged in a valve body, a locating plate is arranged at the upper end of the switching sleeve, a sleeve pipe is arranged on the upper portion of the switching sleeve, the sleeve pipe is located in an upper cavity of the valve body, and an annular notch is formed in the upper end of the sleeve pipe; a ball with a through hole is arranged on the lower portion of the switching sleeve, the ball is located in a flow channel of the valve body and attached to a left valve seat and a right valve seat, and the through hole is matched with the flow channel; a gate groove is formed in the ball and perpendicular to the through hole, a gate is arranged in the switching sleeve and matched with the gate groove, an adjustment rod is arranged on the wall of the upper cavity in a penetrating mode, and the front end of the adjustment rod is meshed with the notch in the upper end of the sleeve pipe of the switching sleeve through matched gear ripples and can drive the switching sleeve to rotate by 90 degrees. The gate type device further comprises a blind plate which replaces a valve cover to cover the top of the valve body in maintenance. The gate type device is exquisite in structure, normal operation of a pipeline system can not be affected in the maintenance process of the valve, and benefit loss caused by valve maintenance is reduced to the minimum.

Description

technical field [0001] The invention relates to a valve, in particular to an improved invention of a gate valve. Background technique [0002] In the prior art, some valves include a valve body, a bonnet, a valve stem and a gate. The gate is set in the medium flow channel of the valve body to cut off or open the medium flow channel. Because the gate is in frequent contact with the medium, it is impacted by the medium so that Wear and deformation often affect the cutting effect of the gate on the medium flow channel, so irregular maintenance is required. However, the normal operation of the pipeline system is often affected during the maintenance of the valve, resulting in loss of benefits. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an on-line maintenance gate device with ingenious structure, convenient use and reduced maintenance loss. [0004] In order to solv...

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Problems solved by technology

[0002] In the prior art, some valves include a valve body, a bonnet, a valve stem and a gate. The gate is set in the medium flow channel of the valve body to cut off or open the medium flow channel. Because the gate is in frequent contact with the medium, it is impacted by the medium so that Wear and deformation will often affect the cutting effect of the gate on the medium flow channel, so irregular maintenance is required. However, the maintenance period of the valve will often affect the normal operation of the pipeline system, resulting in loss of benefits

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