Surrounding type blowing dust removal device

Abstract

The invention discloses a surrounding type blowing dust removal device. The surrounding type blowing dust removal device comprises a blowing gas delivery pipe, a control valve, a rotating joint and a blowing pipe, wherein a plurality of nozzles are arranged on the blowing pipe; the control valve is arranged at the lower part of a filter element of a dust collector through the rotating joint. The heat-expansion and cold-contraction characteristic of metal is utilized, dusty gas is taken as gas for dust removal, and gas back spraying rotation is adopted, so that dust removing is well realized, the cost is low, the equipment is safe and reliable and long in operation cycle, the dust removal efficiency of the filter element is improved by more than 5%, and the operating cost is reduced by 10%; the surrounding type blowing dust removal device has excellent economic benefit, develops a new way in the aspect of dust removal for the filter element, and has excellent popularization and application value.

Description

technical field [0001] The invention belongs to the technical field of jet dust removal equipment, in particular to a surrounding jet dust removal device. Background technique [0002] At present, high-temperature dust-containing gases are often produced in chemical, petroleum, metallurgical and other industries. Since different processes need to remove dust from high-temperature dust-containing gases to achieve gas-solid separation and gas purification, it is often used to filter through the filter element in the dust collector. Gas-solid separation, the filtered and purified dust-containing gas enters the clean air chamber, the dust is filtered and left in the dust removal chamber of the dust collector, and deposited into the ash hopper, and the filter element used in the dust collector will absorb a large number of particles on its outer surface during the dust removal process Dust, as the dust continues to increase, it will affect the filtration quality. Therefore, it is...

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Problems solved by technology

[0002] At present, high-temperature dust-containing gases are often produced in chemical, petroleum, metallurgical and other industries. Since different processes need to remove dust from high-temperature dust-containing gases to achieve gas-solid separation and gas purification, it is often used to filter through the filter element in the dust collector. Gas-solid separation, the filtered and purified dust-containing gas enters the clean air chamber, and the dust is filtered and left in the dust removal chamber of the dust collector and deposited into the ash hopper, while the filter element used in the dust collector will absorb a large number of particles on its outer surface during the dust removal process Dust, as the dust continues to increase, it will affect the filtration quality, so it is necessary to remove the dust accumulated on the surface of the filter element. Now the blowing pipe is commonly used to achieve reverse cleaning, but the result of back blowing will inevitably make the purified air again. Entering the space before purification, since the amount of purification gas used for each injection is relatively large, the second filtration can only be repurified, which is not conducive to improving work efficiency, and it is necessary to increase the gas pressure boosting equipment

In addition, because the tubular nozzle can only clean the part of the filter element corresponding to the nozzle, the nozzle cannot change the direction of the blowback, and there are dead corners during the nozzle that are not easy to clean, and the unfavorable accumulation of the nozzle will become more solid and difficult to remove, so it cannot be easily cleaned. Good and thorough dust removal; some manufacturers also design to use mechanical dust removal devices, such as installing brushes at the front of the manipulator, or mechanical oscillation methods, but not only the structure is complicated, but also the filter element of the dust collector is easy to be damaged due to poor action consistency, and the dust enters after the filter element is damaged. The clean air chamber of the dust collector will bring the polluted and purified gas into the subsequent process, causing great losses

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