Butterfly valve with high tightness and using method thereof

Abstract

The invention relates to the technical field of butterfly valves, in particular to a butterfly valve with high tightness and a using method thereof. The butterfly valve comprises a valve body and a pipe body communicating with the valve body, a rotating sleeve is fixedly connected to the bottom of the inner wall of the valve body, and the rotating sleeve sleeves a rotating rod. According to the butterfly valve with high tightness and the using method thereof, through improvement of the valve, after the valve is closed, a rotating handle is pressed downwards, so that a clamping sleeve extends into a semicircular groove and is meshed with a gear shaft, a movable foot enables an overturning piece to open a fixed seat and an overturning plate downwards, a rubber block extrudes a circular plate outwards, and a rubber sleeve on the circular plate is embedded into a limiting ring sleeve; and at the moment, the valve seals a valve body cavity, a gear belt on a shaft sleeve rotates on a transmission gear sleeve, so that the gear belt drives the gear shaft to rotate, when the gear shaft rotates, a lead screw on the gear shaft rotates, at the moment, a ball sleeve moves towards the rear side, a sealing sleeve makes contact with the valve, so that after the valve is closed, the pipe body and the valve body can form a highly-closed state, so that the situation of fluid overflow is avoided.

Description

technical field [0001] The invention relates to the technical field of butterfly valves, in particular to a butterfly valve with high tightness and a use method thereof. Background technique [0002] Butterfly valve, also known as flap valve, is a regulating valve with simple structure, which can be used for switching control of low-pressure pipeline medium. of a valve. Valves 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. It mainly plays the role of cutting and throttling on the pipeline. The opening and closing part of the butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjustment. [0003] The valve in the existing butterfly valve realizes the adjustment of the internal channel by turning over, and the turning angle also affects the size of the flow rate, so tha...

AI Technical Summary

Problems solved by technology

[0003] The valve in the existing butterfly valve realizes the adjustment of the internal channel by turning over, and the turning angle also affects the size of the flow rate, so that opening and closing can be realized by turning the valve, but long-term high-frequency rotation or adjustment will affect the quality of the valve closure. If it is not applicable for a long time, internal corrosion or its own defects will also affect its airtightness. Of course, another key factor affecting airtightness is that there is a gap between the closed channels of the valve, or the pressure at one end of the fluid is too high. The effect of its internal closure is affected, so there will be overflow after closing

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