Anti-explosion valve capable of bidirectionally protecting large air volume

Abstract

The invention discloses an anti-explosion valve capable of bidirectionally protecting large air volume. The anti-explosion valve comprises a valve frame assembly and a group of valve blade assemblies;the valve frame assembly comprises a rectangular frame defined by an upper end plate, a lower end plate, a left end plate and a right end plate, and two baffles arranged at the front-back symmetricalpositions of the upper end plate and the lower end plate correspondingly; the valve blade assembly comprises shafts, valve blades, first rotary positioning pieces, connecting rods, second rotary positioning pieces, positioning bolts, springs and positioning blocks; the shafts are distributed in the rectangular frame at equal intervals, the two ends of each shaft penetrate through the opposite positions of the left end plate and the right end plate respectively, the valve blades are arranged between the left end plate and the right end plate and connected with the shafts, the first rotary positioning pieces are vertically arranged on the surface of one side of the rectangular frame and located between the shafts and the valve blades, the connecting rods are connected with the first rotarypositioning pieces, the second rotary positioning pieces are arranged on the other side of the rectangular frame and located between the shafts and the valve blades, the positioning bolts are arrangedon the second rotary positioning pieces, one ends of the springs are connected with the tensioning bolts, the other ends of the springs are connected with the positioning bolts, and the positioning blocks are arranged above the second rotary positioning pieces and make contact with the upper side faces of the second rotary positioning pieces.

Description

technical field [0001] The invention relates to the field of antiknock valves, in particular to an antiknock valve for bidirectional protection of large air volume. Background technique [0002] The anti-knock valve is usually installed on the outer wall of the protected building. Under normal circumstances, the anti-knock valve is equivalent to the ventilation inlet or outlet. When the destructive blast shock wave arrives, the anti-knock valve will automatically adjust or close according to the overpressure. Block the damage of the explosion shock wave to the interior of the building. However, when the positive pressure shock passes, the surrounding air will quickly gather towards the center due to the loss of air in the center of the explosion, and immediately form a negative pressure shock to the surroundings. It is necessary to block the negative pressure shock wave immediately. shock. [0003] However, the anti-knock valves of the prior art have certain limitations. On...

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Problems solved by technology

[0003] However, the anti-knock valves of the prior art have certain limitations. One is that the common anti-knock valves all cut off the shock wave through the unidirectional rotation of the valve leaf and the closure of the valve body, and when the shock wave acts on the valve leaf from the opposite direction Or when a tornado forms a negative pressure on the valve leaf, the valve leaf cannot be c

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