Double-face gate valve

Abstract

The invention discloses a double-face gate valve. The double-face gate valve comprises a valve body cavity, a valve rod located at the center of the valve body cavity, and channels close to the bottoms of the two sides of the valve body cavity; two side plates, provided with the channels, of the valve body cavity are arc-shaped plates; the valve body cavity is internally provided with two rubber sealing plates matched with the arc-shaped plates; each rubber sealing plate is provided with two hinge pairs, and a hinge rod is hinged to each hinge pair; a hollow rod is fixed to the valve body cavity, a hand wheel is embedded in the hollow rod, and a valve rod is covered with a hand wheel shaft under the hand wheel; the valve rod is matched with the hand wheel, the bottom of the valve rod is connected with a first boss and a second boss in sequence, and the outer circle of the second boss is provided with valve rod hinge pairs for being connected with the hinge rods; and ball slide rail motion is adopted to replace thread rotating to achieve rotating of the hand wheel, and the problem that thread rotating is difficult when metal is rusted can be solved.

Description

technical field [0001] The invention relates to the field of valves, in particular to a double-sided gate valve. Background technique [0002] The gate valve is an opening and closing gate, and the direction of movement of the gate is perpendicular to the direction of the fluid, so as to achieve the purpose of opening and closing the gate valve. [0003] A traditional gate valve consists of a valve body with a fluid channel and a valve stem for opening and closing the fluid channel. One end of the valve body is located in the valve body, the other end is located outside the valve body, and the end of the valve body located outside the valve body is provided with a handwheel. Turn the hand wheel to make the valve body move up and down, so as to achieve the purpose of opening and closing the gate valve. [0004] Since the valve needs to be in contact with the sealing material when closing up and down, the sealing material will be worn more severely, which seriously affects th...

AI Technical Summary

Problems solved by technology

[0004] Because the valve needs to be in contact with the sealing material when closing up and down, the sealing material will wear more severely, which will seriously affect the sealing performance of the valve; at the same time, the working environment of the valve is humid and high pressure, which is easy to oxidize and rust, which makes it difficult to rotate the traditional threaded connection

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