Electromagnetic driving fast isolation rectangular wind valve

Abstract

The invention provides a solenoid drive high speed isolating rectangular air valve, wherein, a valve body is a rectangular framework surrounded by a long lateral plate and a short lateral plate which have two corresponding surfaces and are welded with each other; a clapboard is welded in the middle between the long lateral plate and the short lateral plate to divide the rectangular framework intotwo parts, and the inner sides of the long lateral plate, the short lateral plate and the clapboard are welded with a valve seat and provided with obturating rings; the short lateral plate is provided with at least two bearing blocks and a mounting frame; a cantilever is arranged and welded at the position corresponding to a shaft, and the two ends of the shaft pass through the bearing blocks on the short lateral plate and are connected with an upper bearing assembly by a bolt; a butterfly plate is connected with the cantilever by a pin roll; the two ends of the shaft are connected and provided with a heavy bob component and a rocker arm by a key, and then are compressed by the bolt; the heavy bob component is connected and provided with a connecting rod II by a small shaft, the rocker arm is connected and provided with a connecting rod I by the small shaft, and then the connecting rod I and the connecting rod II are connected with each other by a connecting sleeve; an electromagneticdevice and a pushing mechanism are installed on the mounting frame. By adopting the proposal, the air valve can be quickly closed and can be reliably sealed when being closed.

Description

An Electromagnetic Drive Quick Isolation Rectangular Damper Technical field: The invention relates to a special valve for quickly isolating media in an industrial ventilation system (closing time is only 3 seconds). The applicable medium is air, gas, polluted air, etc., the working pressure is ≤0.005MPa, it has nuclear safety function, and the working temperature is ≤150℃. It is mainly used in the nuclear island ventilation system of nuclear power plants that require rapid isolation and strict internal leakage requirements. Background technique: At present, the airtight isolation valves used in industrial ventilation systems are mostly circular secondary eccentric or triple eccentric butterfly valve structures driven by electric devices. This general-purpose valve is driven by the valve electric device, and the valve electric device is mainly composed of a motor and a two-stage worm gear reduction mechanism. The design of the ventilation system presents many constraints....

AI Technical Summary

Problems solved by technology

This general-purpose valve is driven by the valve electric device, and the valve electric device is mainly composed of a motor and a two-stage worm gear reduction mechanism. The design of the ventilation system presents many constraints

Butterfly valves with reliable performance are widely used as isolation valves for circular ventilation pipes. For closed isolation of rectangular pipes, a rectangular-shaped variable-diameter pipe is used to isolate the ventilation pipes. Sealed butterfly valves are still used to isolate the ventilation pipes, resulting in increased pipe resistance.

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