Sleeve valve

Abstract

The invention relates to a sleeve valve, which comprises an outer barrel (1) and an adjustment barrel (2) which can relatively slide up and down in the outer barrel (1), wherein a sealing device consisting of a flange (3), an upper sealing ring (4) of which the inner edge is upwards bent and a pressing plate (5) is arranged at the end of the outer barrel (1); and a lower sealing ring (8) of which the inner edge is downwards bent is arranged between the upper sealing ring (4) and the flange (3). An oil storage tank can store more lubrication oil, and the sealing effect is relatively good.

Description

technical field The invention relates to a valve, in particular to a sleeve valve. Background technique 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 in the mud well...

AI Technical Summary

Problems solved by technology

As shown in Figure 3, the sleeve valve sealing device in the prior art has only one sealing ring with an upwardly bent inner edge, 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. Can not effectively achieve two-way sealing

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