Quick-mounting gate valve of enamel sealing and with high performance

Abstract

The invention provides a quick-mounting gate valve of enamel sealing and with high performance. The quick-mounting gate valve comprises a valve body, a valve cover, a copper nut, a valve rod, a locking nut, a hand wheel, and a wedge disc. Inorganic glass porcelain glaze is sprayed on the inner surface of the valve body. The valve cover is fixedly connected to the top of the valve body. The coppernut is in threaded connection with the inner top wall of the valve cover in an inserting mode. The valve rod extending into the valve body is movably inserted into the top of the valve cover and is located in the copper nut. The locking nut is inserted in the copper nut and is located outside the valve rod in a thread-connection mode. The copper nut and the locking nut are embedded in the valve cover. A traditional shaft sealing cover and other assemblies are omitted. Height of the gate valve is lowered. Copper alloy is adopted to the copper nut, and therefore opening torsion is reduced, the cost is saved, and disassembling is convenient. The porcelain glaze is sprayed on the surfaces of the valve body and the gate plate to prevent the gate valve from rusting and being corroded. Fluid resistance is reduced, the opening torsion of the valve is reduced, dust sticking and dust accumulating are reduced meanwhile, and the service life is prolonged.

Description

technical field [0001] The invention belongs to the technical field of valves, in particular to a high-performance enamel-sealed fast-installation gate valve. Background technique [0002] Gate valve is the most commonly used type of all valves, accounting for more than 40% of the total valves. Because the valve is full-bore after opening, the flow resistance coefficient is small, the structure is simple, and the performance is stable. It is the preferred choice for general main branch pipelines. The preferred valve, the gate valve is mainly composed of valve body, bonnet, valve stem, gate, shaft cover, the gate valve is installed on the pipeline, and the valve stem drives the gate and the sealing surface of the valve seat to move up and down, which can connect or cut off the fluid At present, the gate valves on the market are equipped with glands above the bonnet, which generally have the problems of high valve height, large opening torque, inconvenient disassembly, and hig...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a high-performance enamel-sealed quick-installation gate valve to solve the problems of large opening torque, inconvenient disassembly, easy corrosion and damage, and high cost of traditional gate valves.

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