a sleeve valve

Abstract

The invention relates to a sleeve valve, comprising an outer cylinder (1), an adjusting cylinder (2) that can slide up and down in the outer cylinder (1), and a flange (3), A sealing device composed of an upper sealing ring (4) with an inner edge bent upward and a pressure plate (5), and a lower sealing ring with an inner edge bent downwards is also provided between the upper sealing ring (4) and the flange (3) (8). The invention can store more lubricating oil in the oil storage tank, and the sealing effect is better.

Description

technical field [0001] The invention relates to a valve, in particular to a sleeve valve. Background technique [0002] Sleeve valve, also known as lifting valve, is generally used in the sedimentation tank mud discharge well to discharge mud outside the pool. Because its structure is an inner and outer telescopic sleeve, it can also be used to adjust the water level in the water distribution well or the water outlet well, such as a single-pipe dredger Mud discharge, air flotation water discharge, etc., are generally made of carbon steel or stainless steel. However, since the lift pump is usually installed in the water distribution well, when the lift pump needs to be repaired for some reason, the sleeve valve is required to have a two-way sealing function, which can not only prevent water from flowing backward, but also prevent the water in the secondary settling tank from leaking into the drain. In the mud well, maintenance personnel can maintain the lift pump on the spot...

AI Technical Summary

Problems solved by technology

[0003] like image 3 As shown, the sleeve valve sealing device in the prior art has only one sealing ring whose inner edge is bent upwards, so it can only prevent the outside water from entering the inner cavity of the sleeve, and the water in the inner cavity of the sleeve is easy to flow out, which cannot effectively Realize two-way sealing

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