Low-wind-resistance internally concealed dust explosion passive explosion-proof device

Abstract

The invention discloses a low-wind-resistance internally concealed dust explosion passive explosion-proof device. The low-wind-resistance internally concealed dust explosion passive explosion-proof device comprises a shell body, an explosion-proof turning plate, and a power assisting mechanism, wherein a first pipe end and a second pipe end are arranged at the two ends of the shell body; the explosion-proof turning plate is arranged inside the shell body; and the power assisting mechanism comprises a fixing piece, a sliding rod, a limiting assembly and a power assisting assembly, the fixing piece is fixed inside the shell body, the sliding rod and the fixing piece form a sliding pair, the sliding rod is connected with the explosive-proof turning plate, the limiting assembly and the power assisting assembly are both connected with the fixing piece, the power assisting assembly comprises a guide rod connected with the sliding rod, the limiting assembly is used for limiting movement of the sliding rod and the guide rod, and the limiting assembly acts so as to enable the sliding rod to be coupled with explosive shock waves under the action of the power assisting assembly to push the explosive-proof turning plate to close the first pipe end. The low-wind-resistance internally concealed dust explosion passive explosion-proof device relates to the technical field of explosion proof for dust explosion, when dust explosion occurs, the device effectively improves the closing speed of the explosion suppression turning plate on the basis of keeping passive action execution stability, and can realize complete isolation of a dust explosion propagation process.

Description

technical field [0001] The invention relates to the field of dust explosion explosion-proof technology, in particular to a passive explosion-proof device with low wind resistance and hidden dust explosion. Background technique [0002] The dust explosion explosion-proof device is used for the isolation of the dust explosion propagation process. At present, most companies involved in the potential risk of combustible powder explosions use passive flameproof devices, but traditional passive flameproof devices have obvious shortcomings: on the one hand, because the flameproof flap is a whole near-circular Due to the limitation of conditions, it cannot be opened at a large angle, and the wind resistance is large, which increases the additional operating economic cost of the enterprise. On the other hand, the traditional flameproof flap valve uses an external counterweight to assist the flameproof flap valve to open. At this time, due to the relatively long rotation moment of th...

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Problems solved by technology

At present, most companies involved in the potential risk of combustible powder explosions use passive flameproof devices, but traditional passive flameproof devices have obvious shortcomings: on the one hand, because the flameproof flap is a whole near-circular Due to the limitation of conditions, it cannot be opened at a large angle, and the wind resistance is large, which increases the additional operating economic cost of the enterprise. On the other hand, the traditional flameproof flap valve uses an external counterweight to assist the flameproof flap valve to open. At this time, due to the relatively long rotation moment of the counterweight around the rotation axis and the large mass of the counterweight, the closing process of the flameproof flap valve requires more work from the outside, especially the inertia effect of the counterweight, so that the flameproof flap can be closed in time and completely. It is difficult to close. Moreover, the closure of the traditional flameproof flap valve only depends on the impact of the leading shock wave of the dust explosion. Due to the short distance between the leading shock wave and the chemical reaction front, the traditional flameproof flap valve cannot be closed in a very short time. Complete closure in time, flameproof failure

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