Integrated type butterfly check valve

Abstract

The invention discloses an integrated type butterfly check valve, and belongs to the field of hardware valves. The integrated type butterfly check valve comprises a valve body and a butterfly plate, wherein a valve cavity which is matched with the butterfly plate is arranged inside the valve body; a valve rod is connected inside the butterfly plate; one end of the valve rod is rotatably connectedin the valve body; one end, away from the valve body, of the valve rod passes through a valve cover and is connected with a holding handle; a first cavity is arranged inside the valve rod; a first connecting rod is connected in the valve cover; one end, away from the valve cover, of the first connecting rod passes through the valve cover and is rotatably connected to the bottom of the first cavity; a second cavity is arranged inside the butterfly plate; a telescopic pole is connected inside the second cavity; one end of the telescopic pole is matched with the first connecting rod; and one end,away from the first connecting rod, of the telescopic pole abuts against the inner wall of the valve body. The integrated type butterfly check valve has the beneficial effects that the butterfly plate can be stably fixed after rotating by certain angle, a condition that the butterfly plate is unstable in limiting under pressure impact of a medium is avoided, and control, on medium circulating amount, of the butterfly valve is affected.

Description

technical field [0001] The invention relates to the field of hardware valves, in particular to an integrated butterfly check valve. Background technique [0002] Butterfly valve, also known as flap valve, is a regulating valve with simple structure, which can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. The pipeline mainly plays the role of cutting and throttling. The opening and closing part of the butterfly valve is a disc-shaped butterfly plate, which rotates around its own axis in the valve body, so as to achieve the purpose of opening and closing or adjustment. [0003] The traditional butterfly valve consists of a valve body and a valve stem. The lower end of the valve stem is provided with a valve plate. The position of the valve plate of the butterfly valve is mainly limited by the structure of the worm, and the worm is the upper part of the upper valve stem. H...

AI Technical Summary

Problems solved by technology

[0003] The traditional butterfly valve consists of a valve body and a valve stem. The lower end of the valve stem is provided with a valve plate. The position of the valve plate of the butterfly valve is mainly limited by the structure of the worm, and the worm is the upper part of the upper valve stem. However, this limiting structure The limit position is not stable enough. When the flow rate of the medium in the valve body is unstable, it is easy to cause the butterfly plate to rotate, thereby affecting the flow of the medium in and out.

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