Regulating valve integral self-protection sealing surface structure

Abstract

The invention discloses a regulating valve integral self-protection sealing surface structure. The regulating valve integral self-protection sealing surface structure is characterized by comprising avalve rod, a sleeve, a valve element, a valve seat, a valve deck and a valve body, wherein the lowermost end of the interior of the valve body is provided with the valve seat; the valve element is arranged in the valve body and on the upper portion of the valve seat; the lower end of the valve rod penetrates through the valve deck to extend into the valve body to be connected with the valve element; the outer side of the valve element is fixedly connected with a valve element protection device; and the outer side of the valve element protection device is provided with the sleeve. Through the regulating valve integral self-protection sealing surface structure, the direct scouring action of a medium on a valve element sealing surface is reduced, and erosion and abrasion of the medium to thesealing surface are effectively reduced; and accordingly, the repair or replacement frequency of the valve element sealing surface is reduced, the service cycle is prolonged, and the maintenance costis reduced economically.

Description

technical field [0001] The invention relates to an integral self-protecting sealing surface structure of a regulating valve, relates to a self-protecting sealing surface structure of a regulating valve which reduces erosion and wear, and belongs to the fields of processing engineering and valves. Background technique [0002] The existing regulating valve is composed of a valve body, a valve seat, a valve core, a sleeve, a valve stem, etc. ( figure 1 ), the valve core plays a sealing role on the valve seat, and the valve core has no peripheral protection device. During the opening and closing process, the medium directly scours the sealing surface of the valve core ( figure 2 ), and then flow out through the sleeve. After long-term use, the medium will cause serious erosion and wear on the sealing surface of the valve core and valve seat, and the tightness will be reduced. It is necessary to repair the sealing surface of the valve core or replace the new valve core The fre...

AI Technical Summary

Problems solved by technology

Because the medium directly acts on the sealing surface of the valve core, it will cause serious erosion and wear on the sealing surface, and it is easy to damage the sealing surface of the valve core, resulting in a decrease in tightness. The frequency of repair or replacement of the sealing surface of the valve core is relatively high. The service period is relatively short, and repairing the sealing surface of the valve core is a large and important project, which increases the cost of maintenance economically

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