Drive pipe pressing type explosion-proof valve

Abstract

The invention provides a drive pipe pressing type explosion-proof valve which comprises a valve shell, a valve inner shell and a rubber pipe. The valve shell is fixed to the outer part of the valve inner shell; a sealed first air cavity is formed between the valve shell and the valve inner shell; the rubber pipe coaxially penetrates into the valve inner shell; end parts of the rubber pipe and thevalve inner shell are fixedly connected; a sealed second air cavity is formed between the rubber pipe and the valve inner shell; a medium channel is arranged in the rubber pipe; a first air inlet solenoid valve, a second air inlet solenoid valve and an air vent solenoid are arranged on the valve shell; the first air inlet solenoid valve is used for supplying air for a first air cavity; an air inlet of the second air inlet solenoid valve is located int the first air cavity; an air outlet of the second air inlet solenoid valve communicates with a second air cavity; the air vent solenoid valve communicates with the second air cavity and is used for venting the second air cavity; a pressure detection assembly for measuring the pressure in the first air cavity is further arranged on the valve shell; and the first air inlet solenoid valve, the second air inlet solenoid valve, the air vent solenoid and the pressure detection assembly are connected with a controller. The drive pipe pressing type explosion-proof valve provided by the invention is simple in structure, and the close response time is reduced.

Description

technical field [0001] The invention relates to the field of explosion-proof equipment, in particular to an active pipe pressure type explosion-proof valve. Background technique [0002] With the development of modern industry, the potential danger of dust explosion has greatly increased. In actual production, if the explosion-proof plate is only used to vent the explosion, and the explosion isolation is not done well, the flame and pressure wave generated by the explosion will be transmitted to other connected equipment through the connected pipeline, causing a secondary or even more powerful explosion. Explosion-proof technology can prevent the explosion from propagating from the initial position to other process units, avoid the occurrence of "secondary" explosion or system explosion accidents, and reduce explosion disasters. The dust explosion isolation valve is used as an original passive device for occasions where dust explosions are likely to occur. [0003] Especia...

AI Technical Summary

Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide an active pipe pressure type explosion-proof valve, which is used to solve the problems of complex valve body structure and slow closing response in the prior art

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