Self-cleaning filter for cigarette factories

Abstract

The invention relates to a self-cleaning filter for cigarette factories. Transverse U-shaped section filter rings are concentrically sleeved to obtain the self-cleaning filter, one side of the U shape is provided with a filter screen, and the opening of the other side of the U shape has an inclined plane when the opening is opened; the filter screen is a coated filter obtained by coating a high-molecular porous film on at least one surface of a fiber compacted filter; and two diameter ends of each of the filter rings are respectively provided with a rotary dust absorption deashing nozzle stretching into each of the filter rings, and long hollow suction rods and short hollow suction rods undertake half axial dust absorption of the filter rings respectively. The inclined planes of the filter rings and adjacent straight filter planes form a tapered air out channel, the filter rings can be closely and adjacently arranged without separately setting an air outlet channel aside, and one filter ring can be added on the basis of a double-sided filter ring with a same section, so the filter area is increased by about 20%; and one surface is an inclined plane when opening, so an air inlet is expanded, the air inlet section is increased, and the total air inlet section accounts for 25% of a largest ring area, thereby large air flow filter requirements are satisfied, and the relation between the air inlet area and the filter rings is balanced. Dusts cannot enter the coated film, and the coated film cannot be adhered by wet and viscous dusts, so the dust absorption deashing is thorough, the filter resistance decreases to 80Pa, and the service life of the filter is prolonged.

Description

technical field [0001] The present invention is an improvement to the air filtration and purification device of a cigarette factory, and particularly relates to a self-cleaning filter in a cigarette factory with a large filtration area, a filter material that is not easy to stick to dust, a thorough dust removal efficiency, a small loss of running resistance, and a long service life of the filter screen. device. Background technique [0002] The applicant first applied for the patent 201020160723.5 Cigarette factory air-conditioning air filter device, improved the existing cigarette factory air purification device, and proposed to use a combination of multiple hollow side filter units (parallel to the air intake airflow) arranged alternately, so that the original welcome The air inlet filter is changed to the air inlet side filter (the filter surface is parallel to the filter airflow), so that the total filter area is increased, which can be at least 1.5 times larger than th...

AI Technical Summary

Problems solved by technology

Also the aforementioned disadvantages have not been overcome

[0005] The above-mentioned existing technology adopts double-sided filtration, resulting in a relatively thick thickness of a single filter unit, which limits the number of filter units placed in a unit cross-section, thus affecting the further improvement of the filtration area; although in theory, it is possible to increase concentric filtration by reducing the interval between adjacent rings The number of circles is used to increase the filter area, but this reduces the filter air inlet area, which is not suitable for large air volume filtration; if the filter wind speed is increased, although the filter ventilation volume can also be increased, but increasing the filter wind speed will not only cause the filter energy It is not economical, and the wind speed is too high, which will damage the thin filter material and shorten the service life of the filter material.

At the same time, the aforementioned full-axial dust suction and dust removal increases the axial length of the rotary dust suction and dust removal device, which is not conducive to further lengthening the length of the filter ring.

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