High-pressure sluice valve sealing device

Abstract

The invention discloses a high-pressure sluice valve sealing device. The high-pressure sluice valve sealing device comprises a sealing shell, an internal sealing tube, a valve tube and a screwing turntable. Flange plates are fixedly welded to the two ends of the valve tube correspondingly. The sealing shell is fixedly welded to the center of the top of the valve tube. A lifting rod is movably inserted into the sealing shell. A bearing inner ring is installed outside the lifting rod in a threaded mode and further located at the top of the sealing shell. The screwing turntable is fixedly weldedto the top of the bearing inner ring. A bearing outer ring is installed outside the bearing inner ring in a rotating mode. The outer wall of the bearing outer ring is fixedly welded to the top of thesealing shell. The internal sealing tube is fixedly welded to the inner wall of the sealing shell. According to the high-pressure sluice valve sealing device, one end of a sealing membrane is fixed tothe inner wall of the internal sealing tube with a first fixing ring, the other end of the sealing membrane is fixed outside the lifting rod with a second sealing ring, the sealing membrane can effectively prevent a medium from spurting out of the gap between the lifting rod and the sealing shell, and medium escape is effectively prevented.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a high-pressure gate valve sealing device. Background technique [0002] The gate valve is an opening and closing gate. The movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate valve is sealed by the contact between the valve seat and the gate plate. Usually, the sealing surface will be surfacing with metal materials to increase wear resistance, such as surfacing 1Cr13, STL6, stainless steel, etc. The gate has a rigid gate and an elastic gate. According to the different gates, the gate valve is divided into a rigid gate valve and an elastic gate valve. [0003] The opening and closing part of the high-pressure gate valve is the gate, and the movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully ...

AI Technical Summary

Problems solved by technology

[0005] Due to the high internal pressure of the traditional high-pressure gate valve, the internal medium is easy to grow out from the connection of the gate valve during use, resulting in medium leakage, so the use effect is poor

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