Split internal-expansion switch angle valve

Abstract

The invention provides a split internal-expansion switch angle valve. The split internal-expansion switch angle valve comprises a valve seat, a valve element, a valve rod, an angle type valve body andan upper cover, wherein the upper cover is arranged on the angle type valve body, the angle type valve body is arranged on the valve seat, and the valve element is arranged in an inlet flow channel of the angle type valve body. The lower end of the valve rod is connected with the valve element through a clamping nut, and the upper end of the valve rod penetrates out of the upper cover. The outerperipheral surface of the valve element comprises a positive conical surface located at the upper end of the outer peripheral surface of the valve element, a guide surface located under the positive conical surface and a sealing surface positioned under the guide surface; a flushing hole is formed in the angle type valve body, and a flushing plug is arranged in the flushing hole. The switch anglevalve has the advantages of being small in flow resistance coefficient, high in flowing capacity, reliable in sealing, convenient to disassemble and assemble and the like.

Description

technical field [0001] The invention relates to an on-off angle valve, in particular to a split-type inward-opening angle valve with anti-blocking function, full-stroke guidance and easy maintenance developed for the working conditions of salt chemical industry, which belongs to the technical field of fluid control valves. Background technique [0002] Brine purification is a key link in the vacuum salt production process. It is a process that uses physical and chemical methods to remove impurities in brine, such as lime, Glauber's salt, and carbon dioxide for purification. The brine purification process usually includes the treatment of the original brine in the first reaction tank, the treatment of the first brine in the second reaction tank, and the separation and treatment of the sediment. The mud discharge problem is involved in this process. [0003] Traditional mud discharge valves generally use knife gate valves, which have the advantages of small installation size, ...

AI Technical Summary

Problems solved by technology

[0003] Traditional mud discharge valves generally use knife gate valves, which have the advantages of small installation size, good flow capacity, and simple structure, but also have disadvantages such as easy leakage, high blade friction, short service life, and inconvenient maintenance. The cycle runs smoothly, causing large economic losses to the production enterprises

[0004] Therefore, choosing a valve structure to meet the above working conditions has always been a major problem for design institutes and end customers.

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