Ventilating board for fire-fighting ventilating pipeline valve

Abstract

The invention provides a ventilating board for a fire-fighting ventilating pipeline valve. Countless air vents are formed in the ventilating board. The distribution density of the air vents is characterized in that the density of the air vents is gradually decreased from the A side to the B side. The airtightness of the fire-fighting valve in the closed state under the high temperature condition can be improved remarkably, and the cost is low.

Description

[0001] This application relates to a divisional application with the application number 201510519564.0 and the name of the invention fire-fighting ventilation pipe valve. technical field [0002] The invention relates to the field of fire-fighting pipeline equipment, in particular to a fire-fighting ventilation pipeline valve. Background technique [0003] In the field of fire-fighting ventilation pipes, fire-fighting valves must be installed in the pipes. When a fire occurs in a building unit, if the fire spreads into the fire-fighting pipes, the fire-fighting valve must be closed to prevent the high-temperature air from being drawn out by the fan and affecting the external environment. The current fire-fighting valve mainly includes a short pipe, the two ends of the short pipe are provided with connecting flanges, and a valve plate that can rotate around a vertical axis is arranged in the short pipe, and the valve plate is operated by the operating mechanism outside the...

AI Technical Summary

Problems solved by technology

Since this kind of fire valve needs to ensure that it still has good sealing performance under high temperature conditions, it is necessary to minimize the deformation of the valve plate under high temperature conditions; for this reason, the current valve plate generally forms vertical reinforcement grooves on the surface. It can effectively suppress the bending deformation of the valve plate with respect to the horizontal plane; however, on the same plate, after the vertical reinforcement groove is formed, the horizontal reinforcement groove cannot be formed, which makes the valve plate easy to form bending deformation with respect to the vertical surface; when encountering high temperature When there is air flow and there is a certain air pressure in the pipeline, the heat is evenly distributed to the surface of the valve plate, causing the surface of the valve plate to deform uniformly in the transverse direction, which causes the valve plate to lean against the side of the sealing edge in the forward direction, and under the action of pressure, it will move backward deformation, resulting in obvious air leakage on this side; the current general solution is to greatly thicken the valve plate, which obviously greatly increases the manufacturing cost, especially the pressing of the vertical reinforcement groove, the processing difficulty is greatly increased, and Also make the weight of the whole valve significantly increase, the effect is also very limited

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