Gate valve convenient to open and close

Abstract

The invention provides a gate valve convenient to open and close, and belongs to the technical field of mechanical equipment. The gate valve convenient to open and close comprises an inner pipe and an opening and closing component ,wherein the outer surface of the inner pipe is fixedly connected with an outer shell, the side end of the inner pipe is fixedly connected with an expansion pipe, and a sliding hole is formed in the circumferential surface of the inner pipe; and the opening and closing component comprises a valve plate, a first valve rod, a second valve rod, a sealing assembly and two sets of elastic assemblies, the valve plate is slidably connected into the sliding hole, the first valve rod is fixedly connected to the upper end of the valve plate, the second valve rod is fixedly connected to the upper end of the first valve rod, the sealing assembly is arranged in the sliding hole, the sealing assembly is connected with the valve plate to achieve sealing of the valve plate, and the two sets of elastic assemblies are arranged in the outer shell and connected with the valve plate to achieve closing of the valve plate. Through the cooperation of all the assemblies in the gate valve, a valve body is very convenient to open and close, and the use efficiency of the gate valve is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment, and in particular relates to a gate valve which is convenient to open and close. Background technique [0002] The gate valve (gate valve) is a gate of the opening and closing part. The direction of movement of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled. The gate valve is controlled by the contact between the seat and the gate. Sealing, usually the sealing surface will be surfacing with metal materials to increase wear resistance, such as surfacing 1Cr13, STL6, stainless steel, etc. The gate has rigid gate and elastic gate. According to the different gate valves, gate valves are divided into rigid gate valves and elastic gate valves. . [0003] In the prior art, during the use of the gate valve, the screw rotation is usually used to drive the valve plate to move downward, the...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a gate valve that is easy to open and close, aiming to solve the problem of corrosion on the surface of the screw rod after the valve has been used for a period of time in the prior art. The problem

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