Structure used for cleaning exhaust duct online by means of dry ice

Abstract

The invention relates to a structure used for cleaning an exhaust duct online by means of dry ice. The structure comprises a crawling mechanism, a spraying nozzle mechanism, an electrical equipment control box and a dry ice storage box, wherein the dry ice storage box is connected with the spraying nozzle mechanism through a dry ice conveying pipe; the electrical equipment control box is used forcontrolling the crawling mechanism to move forwards and backwards and controlling the spraying nozzle mechanism to start and stop; and the crawling mechanism is used for bearing the spraying nozzle mechanism and crawls in the exhaust duct, so that the spraying nozzle mechanism performs cleaning work on the exhaust duct conveniently. According to the structure, the crawling mechanism crawls in theexhaust duct, during crawling, the spraying nozzle mechanism sprays dry ice to the inner wall of the exhaust duct, the dry ice makes violent contact with tobacco tar on the inner wall of the exhaust duct under the normal pressure and sublimates to produce rapid freezing and rapid expanding, the tobacco tar is frozen instantly until being brittle, then under detonation, the tobacco tar falls apartand is blown away by compressed air, accordingly, the tobacco tar is stripped away from the inner wall of the exhaust duct fast and conveniently, and trouble and wasting caused when a tobacco flue-curing manufacturer replaces the exhaust duct regularly are avoided.

Description

technical field [0001] The invention relates to a pipe cleaning structure, in particular to a structure for cleaning air pipes online by using dry ice. Background technique [0002] In the process of curing tobacco leaves, the flue-cured tobacco industry needs to discharge harmful gases from the workshop. During this process, a large amount of smoke tar and its carbides will adhere to the exhaust pipe. This material is extremely viscous and extremely difficult to remove. Due to the adhesion of smoke tar and dust mixture, the wind resistance will increase, which will lead to increased energy consumption and even block the air duct. [0003] The traditional solution is to regularly shut down and dismantle the air duct to replace it with a new one, or use physical methods to polish and clean it after dismantling. Therefore, a method that does not affect production and does not require regular replacement of new air ducts will produce huge economic benefits. SUMMARY OF THE IN...

AI Technical Summary

Problems solved by technology

[0002] The flue-cured tobacco industry needs to discharge harmful gases from the workshop during the process of curing tobacco leaves. During this process, a large amount of tobacco tar and its carbides will adhere to the exhaust duct. This substance is extremely viscous and difficult to remove. The air resistance will increase due to the adhesion of smoke tar and dust mixture, which will lead to increased energy consumption and blockage of the air duct. This is a persistent problem that the flue-cured tobacco industry needs to solve urgently

[0003] The traditional solution is to stop work regularly to remove the air duct and replace it with a new one or use physical methods to polish and clean it after removal. Each time the shutdown, removal, and replacement of the duct cause huge waste of manpower and material resources, and manual physical cleaning causes damage to the air duct.

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