Disk type reversible stop valve

Abstract

The invention relates to the technical field of valves and particularly discloses a disk type reversible stop valve. The disk type reversible stop valve comprises a valve body, a valve clack, a valverod, a valve deck and an operating mechanism; the lower end of the valve rod is provided with a steering disk, and the upper end of the valve clack is arranged in the steering disk; the upper end of the valve clack is provided with an elastic element, and the bottom surface of the valve clack and the bottom surface of a valve cavity are in sealed cooperation; the valve rod is driven by the operating mechanism to drive the steering disk to rotate; and the steering disk then drives the valve clack to rotate to achieve communicating or partitioning of the valve cavity and a medium flow-out channel. The stop valve is novel in structure, compact and reasonable in arrangement, fast to be turned on or off, and flexible to operate; a rotating disk is added between the valve rod and the valve clack, the elastic element is arranged between the steering disk and the valve clack, so that the valve clack is attached to the sealing face of the valve cavity all the time, and the valve clack achievesthe functions of self grinding and polishing; and particle media at the sealing face position can be removed, the sealing face is effectively protected, the problem that the sealing face is easily damaged in a pressing manner is effectively solved, and meanwhile a reversing function can also be achieved.

Description

technical field [0001] The invention belongs to the technical field of valves, in particular to a disc-type reversible stop valve. Background technique [0002] Globe valve, also known as cut-off valve, is a forced sealing valve, so when the valve is closed, pressure must be applied to the disc to force the sealing surface not to leak. Globe valves are widely used in petroleum, chemical, pharmaceutical, electric power and other industries, and are used for opening and closing on pipelines of steam, water, and oil media. Commonly used medium valves in the prior art such as figure 1 Shown includes valve body 1', valve disc 2', split ring 3', valve disc cover 4', valve stem 5', valve cover 6', bracket 7', packing 8', packing gland 9', guide Plate 10', valve stem nut 11' and other main components. There is a groove at one end of the valve stem 5' to cooperate with the split ring 3', and they are put into the valve disc 2' together, and the valve disc cover is screwed in The d...

AI Technical Summary

Problems solved by technology

The globe valve in the prior art usually has the following disadvantages: the valve disc and the sealing surface of the valve seat move vertically, and when there are impurities on the sealing surface, the two sealing surfaces contact and easily crush the sealing surface; the valve opens and closes for a long time; the valve stem lifts, and the valve Higher, takes up a lot of space; the axial movement of the valve stem shortens the service life of the packing

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