Valve for preventing blockage and controlling powdery substance flow

Abstract

The invention relates to a valve for preventing blockage and controlling powdery substance flow, and the valve comprises a valve body, a valve cover and a valve core, wherein the valve body is in an inverted frustum shape, the lower end of the valve body is provided with a blanking port, the upper end of the valve body is provided with an opening, and the opening is provided with a valve body internal thread; and the valve cover and the valve body internal thread are screwed through a valve cover external thread, the valve cover is fixed on the upper opening of the valve body, the valve core which penetrates through the valve cover is arranged in the valve body and can move axially, i.e., the upper end of the valve core extends out from the upper end of the valve cover, and the lower end of the valve core passes through the valve cover to enter into a valve body cavity which is in an inverted frustum shape and is positioned in the valve body so as to form an annular work channel space. The valve for preventing blockage and controlling powdery substance flow provided by the invention has the advantages of simple structure, lower cost and good use effect, can be used for solving theproblem that a ball valve or dish valve in the prior art is easy to block and controlling the flow, and be applied to occasions that powdery substances are required to be added under the condition ofcontrollable flow in the ferrous metallurgy industry, or other related fields.

Description

technical field [0001] The invention relates to a valve, in particular to a valve applied to the flow control of powdered substances, which is applied to the addition control of powdered additives in the iron and steel metallurgy industry. Background technique [0002] At present, in the iron and steel metallurgy industry, there are many occasions that need to use powder materials, such as carbon powder added to the electric furnace, mold slag added to the crystallizer, etc. In order to ensure the quality of molten steel or products, the amount of powder substances added to the equipment is strictly controlled. For this reason, valves for flow control are provided before transporting such powder substances into the equipment, such as figure 1 As shown, these valves generally adopt ball valves or butterfly valves that have been standardized at present. [0003] The use of traditional valves for flow control in the prior art mainly relies on changing the effective area of ​​t...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem that various types of valves in the prior art cannot solve the problem that the powder is damp and agglomerated to form granular substances, resulting in uncontrollable flow and finally causing valve core blockage, the present invention provides a valve that can prevent blockage and control The purpose of the valve for the flow of powdery material is to overcome the problems that the valves in the prior art are easy to block and the flow is difficult to control because the valve channel is in the shape of a shuttle. The specific structure of the present invention is as follows:

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