A kind of external jet spray dust cleaning device

Abstract

The invention discloses an external-spraying type injection ash removing device which comprises an injection gas conveying pipe, a control valve and an injection pipe, wherein a plurality of nozzles are arranged on the injection pipe and arranged below a filter core of a dust remover, the injection gas conveying pipe is connected with a dust-containing gas inlet pipeline of the dust remover, and a pressing device and a heating device are arranged on the injection gas conveying pipe. According to the external-spraying type injection ash removing device, the nozzles are arranged below the filter core of the dust remover, and by skillfully utilizing the characteristic of a conical column structure with an upper top and a lower bottom of the filter core, an airflow injecting gas moves along the outer wall of the filter core, a good stripping effect is achieved, the injection gas conveying pipe is connected with a dust-containing gas inlet pipeline of the dust remover, a gas source is higher in temperature, the cost on warming and pressurizing the gas for injection can be greatly reduced, a good economic benefit is achieved, a new approach is provided for the aspect of removing dust from the filter core, and a good popularization and usage value is realized.

Description

technical field [0001] The invention belongs to the technical field of blowing dust removal equipment, and in particular relates to an external spraying blowing dust cleaning 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 filtrati...

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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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