Quick cutting-off deslagging valve

Abstract

The invention discloses a quick cutting-off deslagging valve, belongs to the technical field of valves, and solves the problems that a conventional valve cannot cut off materials to lose self using effect of the valve. The quick cutting-off deslagging valve is characterized by comprising a valve body, knife switches, a flashboard and an air cylinder assembly, wherein the knife switches are mountedin the valve body; the two knife switches are symmetrically arranged on the outlet side of the valve body; the flashboard is arranged at an outlet surrounded with the knife switches; the knife switches have high intensity, the cutting properties are good, through cooperation with quick movement of the flashboard, favorable cutting-off functions can be realized, and mediums can be cut off at the knife switches; through air inlet and air exhaust of an electromagnetic valve, an air control valve is controlled to perform changes of an air path, and the valve opening and closing time is smaller than or equal to 1s; the valve opening and closing time is shortened to 1 / 3, and quick opening and closing are realized. Besides, an air cylinder assembly in an air storage tank is adopted, the air input quantity is increased by the air control valve, quick exhaust of the air in an air cylinder is realized through a quick exhaust valve, the operation time of the air cylinder is shortened, the cutting off speed is increased, and the sealing effect is good.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a fast cut-off slag discharge valve. Background technique [0002] The slag discharge valve is mainly suitable for the transportation pipelines of coal powder, ash, slag-water mixture and other materials in power plants, metallurgy, water conservancy and cement industries. It plays the role of cut-off and circulation, and generally adopts pneumatic operation. When there is a large amount of fiber, thumbtack, wood chips and other materials in the conveying medium, the original use effect of the valve will be lost because the valve cannot cut off the material. [0003] However, due to the large stroke of the straight-stroke cut-off valve, the air chamber on one side of the cylinder must be discharged completely, and the air chamber on the other side must be filled with gas to operate after the air chamber is boosted, resulting in a slow opening and closing time of the valve. The va...

AI Technical Summary

Problems solved by technology

However, after long-term working friction, the internal sealing structure of the valve will wear out, and the sealing cannot be established again, which affects its sealing performance. Moreover, the structural strength of the gate knife and valve plate of the existing slag discharge valve is low, and it does not have high strength. Cutting performance, it is difficult to realize the cutting function

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