Blade type large-wind-volume impact wave resisting valve

Abstract

The invention discloses a blade type large-wind-volume impact wave resisting valve which comprises a frame, a bearing, a rotary shaft, a valve blade and a valve blade stop dog; the valve blade stop dog comprises a valve blade front stop dog and a valve blade rear stop dog; the valve blade front stop dog and the valve blade rear stop dog are arranged on the front and rear sides of the moving direction of the valve blade separately to limit the rotary angle of the valve blade; and the surface, in contact with the valve blade, of each of the valve blade front stop dog and the valve blade rear stop dog is in tight fit with the valve blade. The blade type large-wind-volume impact wave resisting valve has the advantages of being rapidly closed without driving of an electrical component when impact wave comes, automatically resetting to recover ventilation when the impact wave goes away, saving energy, resisting impact of a flying object, increasing the effective ventilating area and adjusting the angle of the valve blade at will.

Description

technical field [0001] The invention relates to the field of anti-shock wave valves, in particular to a vane type anti-shock wave valve with large air volume. Background technique [0002] At present, petrochemical, nuclear power and other industries must consider the HVAC system when designing control rooms. The national standard stipulates that anti-shock wave valves must be installed at the air inlet and outlet to resist external shock waves and protect the safety of personnel and equipment in the room. When the shock wave comes, the shock wave valve will be closed instantly to block the shock wave outside. When the shock wave disappears, the shock wave valve will automatically reset under the action of the spring to allow normal ventilation. [0003] The anti-shock wave valves currently on the market are all modular, and the ventilation area is small, resulting in a large valve size. In some special occasions such as smoke exhaust and mechanical ventilation, when the ai...

AI Technical Summary

Problems solved by technology

[0003] At present, the anti-shock wave valves on the market are all modular, and the ventilation area is small, resulting in a large valve size.

In some special occasions such as smoke exhaust and mechanical ventilation, when the air volume is large and the wall size is not large, the modular anti-knock valve is not suitable.

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