Self-cleaning filter element dust removal device and method

Abstract

The invention relates to a self-cleaning filter element dust removal device and method. According to the method, a mode of combining eccentric block vibration, reverse pulse airflow and electrostatic adsorption is adopted, firstly, electrostatic dust removal is adopted under the action of the reverse pulse airflow, and when more dust is accumulated, vibration dust removal is performed to enhance cleaning of dust on the surface of a filter element. The device is divided into a vibration dust removal device and a reverse pulse airflow and electrostatic dust removal device, the vibration dust removal device achieves opening and closing of a pneumatic clutch by judging the dust amount, then negative pressure is adopted to drive an eccentric block to rotate, and vibration dust removal is achieved. According to the reverse pulse airflow and electrostatic dust removal device, dust in the filter element is discharged through local reverse pulse airflow, all-directional dust removal of the filter element is achieved through the adsorption effect of an electrostatic brush head and relative movement of the electrostatic brush head and the filter element, and dust sedimentation is achieved through a dust baffle arranged on a brush head protection cover. On the premise that work is not affected, efficient cleaning of the filter element can be achieved.

Description

technical field [0001] The invention relates to a self-cleaning filter element dust removal device and method, in particular to a vibration and electrostatic combined dust removal method and a filter element self-cleaning device in a negative pressure environment. Background technique [0002] When handling industrial particulate dust through negative pressure pneumatic conveying, a filter element is often installed to filter it during the conveying process to output clean air. Due to the high content of dust particles in the airflow, the filter element will accumulate a large amount of dust in a short period of time. Blockage will occur, making the internal pressure of the filter element much greater than the external pressure, increasing the air intake resistance, which will seriously affect the pneumatic transportation of industrial particulate dust and reduce the service life of the fan. [0003] The cleaning of the filter element is a key factor affecting the life of th...

AI Technical Summary

Problems solved by technology

[0002]When dealing with industrial particulate dust through negative pressure pneumatic conveying, a filter element is often installed to filter it during the conveying process to output clean air. High, so that the filter element will accumulate a large amount of dust and even blockage in a short period of time, so that the internal pressure of the filter element is much greater than the external pressure, and the air intake resistance increases, which seriously affects the pneumatic transportation of industrial particulate dust and reduces the service life of the fan.

[0003]The cleaning of the filter element is a key factor affecting the life of the filter element. At present, the filter element is mainly cleaned by hand. The traditional method of disassembling the filter element for manual cleaning has great limitations. Especially in the occasions where the filter element is polluted quickly, the disassembly of the filter element is complicated, and continuous work is required, the time cost and difficulty brought about by disassembling the filter element, as well as the incompleteness and damage caused by manual cleaning of the filter element are particularly significant.

Vibration is also used in the industry to clean filter elements. However, an additional motor is usually required to vibrate the filter element. The structure is more complicated and the cleaning effect is poor because the vibration source is far away from the filter element.

The reverse air flow can make the dust on the surface of the filter element detach, but when the filter element is working, the smaller dust is difficult to settle by gravity, and will be adsorbed to the inside of the filter element again, making it difficult to clean all the dust, and the inhalation and accumulation of tiny dust will make the filter element cleaner. difficulty

Dust can also be removed by electrostatic adsorption. However, electrostatic dust removal also has the problem of being difficult to clean after contamination, and it is even more difficult to clean the surface of the filter element.

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