Ceramic-embedded plate valve

Abstract

The invention discloses a ceramic-embedded plate valve, which comprises a left valve body, a right valve body, an upper flange, a lower flange, disc springs, a valve rod outer sealing member, a valve body pipe orifice outer sealing member and an inner sealing member, wherein the inner sealing member consists of a ceramic flat plate, a flat plate frame and fixing valve plates; a first disc spring is tightly attached to one side of a left fixing valve plate and one side of a right fixing valve plate; a second disc spring of which the outer diameter is larger than that of the first disc spring is arranged among the first disc spring, the left valve body and the right valve body; a third disc spring of which the outer diameter is larger than that of the second disc spring is arranged among the second disc spring, the left valve body and the right valve body; the inner peripheries of the outer sides of the left valve body and the right valve body are provided with annular grooves; and a component force flat washer and a graphite packing are fixed in the annular grooves in turn respectively by using a gland bush from outside to inside. The ceramic-embedded plate valve has the advantages of high performance, balanced stress on the fixing valve plates due to tower combination of the disc springs and component force action of the packing, and difficulty in smashing.

Description

technical field [0001] The invention relates to a flat valve. Background technique [0002] With the development of industry, the status of flat valve in the national economy is getting higher and higher. It is mainly used in powder conveying, such as: alumina, magnesia, silica, silicon powder, kaolin, talc, quartz sand, coal powder and other media. And, when the flat valve is located below the container, it can act as a discharge valve; when the flat valve is located above the container, it can act as a feeding valve; when the flat valve is located in the delivery pipeline, it can act as a control valve. effect. [0003] In ironmaking and steelmaking, it is mainly used in: pulverized coal injection in blast furnace - control of high-density material injection at the nozzle of the nozzle, feeding of 700 ℃ high temperature iron pellets in direct reduction method; pig iron desulfurization - adding Magnesium oxide, silicon dioxide and other auxiliary materials; electric arc ...

AI Technical Summary

Problems solved by technology

[0016] The design of flat valve has many advantages, but the flat valve made of metal materials still has shortcomings in terms of high temperature resistance, corrosion resistance, etc., and is not suitable for work in such an environment.

At the same time, valves made of ceramic materials are extremely prone to breakage due to uneven pressure on ceramic structural parts, which brings great inconvenience to production and use.

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