Novel high-safety air draft device for steel cylinder

Abstract

The invention discloses a novel high-safety air draft device for a steel cylinder; the device comprises an air draft cover shell and a fixing hoop, the air draft cover shell is used for extracting gas leaked from a steel cylinder connector, and the fixing hoop is used for fixing the air draft cover shell to a steel cylinder; the air draft cover shell comprises two shell bodies, the fixing hoop is connected with one shell body, the two shell bodies are connected in a hinged mode, fixing faces are arranged on the sides, away from the hinged end, of the two shell bodies, through holes are formed in the two fixing faces, openings are formed in the two through holes, the through holes in the two fixing faces can form a closed through hole, the shell bodies are connected with exhaust pipes, and the exhaust pipe are communicated with the inner cavities of the shell bodies. a locking mechanism is arranged on each shell body and is used for tightly fixing the two shell bodies together; a pneumatic lock is arranged on one shell body and is in signal connection with a control terminal. The novel high-safety air draft device for the steel cylinder can prevent the staff from opening the air draft cover shell by mistake, so that the safety is improved, and meanwhile, the novel high-safety air draft device for the steel cylinder is simple in overall structure, convenient to operate and high in mounting efficiency.

Description

technical field [0001] The present application relates to the field of air extraction devices for steel cylinders, in particular to a novel high-safety air extraction device for steel cylinders. Background technique [0002] Steel cylinders are steel cylinders that store dangerous gases such as high-pressure oxygen, gas, and liquefied petroleum gas. The safe storage and transportation of gas cylinders generally hold permanent gas, liquefied gas or mixed gas. [0003] However, the part between the outlet of the special steel cylinder and the delivery pipeline is a leak-prone part. Except for welding, all interface forms will leak, so the special gas is easy to leak and leak at the gas cylinder interface. In order to ensure the safety of the staff, the exhaust device is often used to seal and exhaust the cylinder, and discharge it to the exhaust equipment that can handle this special gas, which can effectively avoid the leakage of dangerous gas. [0004] At present, the Chin...

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Problems solved by technology

[0005] In view of the related technologies mentioned above, the inventor believes that a motor needs to be used in the installation process of the exhaust hood, and the motor will generate electric sparks during use, and the electric sparks and The special gas leaked in the steel cylinder is prone to explosion when it encounters, and at the same time, the airtightness of the above-mentioned exhaust device is poor, prone to gas leakage, complex structure, cumbersome operation process, low installation efficiency, easy accidental touch by staff, resulting in leakage danger and low safety

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