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An explosion-proof ventilation device for underground engineering

A ventilation device and underground engineering technology, which is applied in the direction of mining devices, combined devices, mine/tunnel ventilation, etc., can solve the problems of easy explosion and uncontrollable concentration of harmful gases, so as to avoid explosion, good dust suction effect and ensure safety Effect

Active Publication Date: 2021-04-27
JIANGSU JIANWEI PROTECTION ENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the concentration of harmful gas in the ventilation duct cannot be controlled and is easy to explode in the prior art, and proposes an explosion-proof ventilation device for underground engineering

Method used

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  • An explosion-proof ventilation device for underground engineering
  • An explosion-proof ventilation device for underground engineering

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Embodiment

[0019] refer to Figure 1-2 , an explosion-proof ventilation device for underground engineering, comprising a ventilation pipe 1 and a fan 2 installed inside the ventilation pipe 1, an adjusting device for adjusting the speed of the fan 2 is fixed on the inner wall of the ventilation pipe 1, and a processing box is fixed on the inner wall of the ventilation pipe 1 3. The side wall of the processing box 3 is provided with a ventilation groove 4, the inner wall of the ventilation groove 4 is fixed with an "L"-shaped connecting rod 28, and the side wall of the connecting rod 28 is rotatably connected with a rotating shaft 30, and the circumferential side wall of the rotating shaft 30 A plurality of rotating plates 29 are fixed, and the upper inner wall of the ventilation groove 4 is provided with an air supply groove 5, and the inner wall of the air supply groove 5 is sealed and slidably connected with a compression plate 6, and the bottom of the compression plate 6 is fixed with ...

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Abstract

The invention discloses an explosion-proof ventilation device for underground engineering, which comprises a ventilation pipe and a fan installed inside the ventilation pipe. box, the side wall of the processing box is provided with a ventilation slot, the inner wall of the ventilation slot is fixed with an "L"-shaped connecting rod, the side wall of the connecting rod is connected to a rotating shaft in rotation, and the circumferential side of the rotating shaft The wall is fixed with a plurality of rotating plates. The advantages are: when the gas concentration in the underground passage is high and the air input from the outlet pipe is not enough to reduce the gas concentration, the detector will send out an audible and visual alarm. The resistance value of the electromagnet increases the attraction force of the electromagnet, which in turn reduces the speed of the fan and reduces the suction volume per unit time, thereby reducing the gas concentration in the ventilation pipe and avoiding explosions.

Description

technical field [0001] The invention relates to the technical field of underground engineering, in particular to an explosion-proof ventilation device for underground engineering. Background technique [0002] Underground engineering refers to underground civil engineering that goes deep below the ground to develop and utilize underground space resources. It includes underground houses and underground structures, underground railways, highway tunnels, underwater tunnels, underground common trenches and underground passages for street crossings. [0003] During the construction of underground projects, there will be many harmful gases, which need to be discharged in time to ensure the safety of the construction environment. At present, most of them are ventilated by means of fan exhaust, but during the exhaust process, the gas is concentrated and discharged through the ventilation pipe. The concentration of harmful gases will increase significantly. For gases that may explode...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F1/00E21F1/04E21F1/08E21F17/18B01D50/00
CPCE21F1/00E21F1/08E21F1/04E21F17/18B01D50/60
Inventor 侯琛
Owner JIANGSU JIANWEI PROTECTION ENG TECH CO LTD
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