Turtle-shell-imitating valve bodies and knock valve

Abstract

The invention relates to heating and ventilation equipment for a fresh air inlet and an exhaust outlet of a building, in particular to a ventilation knock valve and valve bodies thereof. The double sides of the ventilation knock valve have an impact wave protection function. The turtle-shell-imitating small-valve-element array type knock valve comprises valve elements and the two valve bodies, wherein each valve body comprises a frame body, and two intersecting supporting bodies are symmetrically arranged in each frame body and provided with through grooves at intervals. A spine is located at the intersecting position of every two supporting bodies. Each valve element is arranged above the through grooves of every two supporting bodies. The two valve bodies are fixed in a matched mode, the front faces of the supporting bodies of the two valve bodies are opposite, and the upper side faces of the frame bodies are connected. One end of each valve element is rotatably connected and fixed to the corresponding spine, and the windward faces of the valve elements are fixed in the middles of valve cavities through springs fixed to the frame bodies. The knock valve and the valve bodies have the advantages that the weight of the valve elements can be greatly reduced, the antiknock strength is improved, the closing speed of the valve is increased, the energy of impact waves permeating through the ventilation valve is lowered, and the safety performance is remarkably improved.

Description

technical field [0001] The invention relates to HVAC equipment for fresh air inlets and exhaust air outlets of buildings, especially ventilation valves for fresh air inlets and exhaust air outlets of buildings with potential explosion shock wave hazards, especially a kind of anti-shock wave protection on both sides. Ventilation antiknock valve and its valve body. Background technique [0002] The explosion shock wave mainly has two stages that will cause greater damage: the first stage is that when the explosion occurs, the center point of the explosion will release a shock wave with a pressure of tens of thousands of atmospheres. The shock wave moves around at a high speed in the form of a spherical surface, and the shock wave has a great shock-breaking force on the object. As the moving distance of the shock wave increases, the pressure of the shock wave will rapidly decay; the second stage is that the air at the center of the explosion shrinks due to the inertia of the f...

AI Technical Summary

Problems solved by technology

However, the existing anti-shock wave ventilation valve adopts a large spool design, and its opening B3 has a long length and low structural strength, so the ability to resist high-intensity shock waves is limited (currently the highest anti-knock ability is high reflection pressure 12bar, lasting about 70ms); in addition, The weight of a single valve core is large, and the initial speed obtained under a certain shock wave impulse is slow, resulting in a long closing time, so a large part of the shock wave energy will pass through the valve body, and there is a certain risk to the personnel and facilities on the protected side.

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