Working principle of cartridge filter

- Nov 14, 2020-

Working principle of cartridge filter


The filter cartridge dust collector is composed of air inlet pipe, air exhaust pipe, box body, ash bucket, ash cleaning equipment, filter barrel and electric control equipment. The placement of the filter cartridge in the dust collector is very important. The filter cartridge can be directly placed on the flower board of the box body.  


The characteristics and operation principle of cartridge filter


1. The filter element of the cartridge filter is the filter cylinder, whose structure is divided into roof, metal structure, folding filter material and base, etc. The filter cartridge is the filter material of the planned length folded into pleats and the head and tail bonded into the cylinder. The inside and outside of the cylinder are supported by metal structure, and the upper and lower are fixed by the top cover and the base. The top cover is provided with fixing bolts and washers.


2. The filter cartridge dust collector is composed of air inlet pipe, air exhaust pipe, box body, ash bucket, ash cleaning equipment, filter barrel and electric control equipment. The placement of the filter cartridge is very important in the dust collector. The filter cartridge can be directly placed on the flower plate of the box body, or can be placed on the flower plate at an inclined Angle. It is fixed with bolts and rubber pad. Some under the flower board for the filter chamber, some above for the clean air chamber. In addition to bolting the cartridge down, it is more convenient to use the active locking device and the rubber compaction device, both of which are very convenient for installation and repair.


3, cartridge filter operation principle: after ash hopper in the dusty gas into the dust, because the flow section and expand, air particles in some massive dust particles under the action of gravity and inertia settling down, fine granularity and density of small dust particles, as it enters the filter chamber through the diffusion and brown screen such as comprehensive effect, dust deposition in filter material appearance, after purification, the air chamber by the exhaust gas into the net by the fan discharge. The resistance of the cartridge filter increases with the addition of the dust layer thickness on the outside of the filter material. When the resistance reaches a certain specified value, clean the ash. At this moment, the pulse controller controls the opening and closing of the electromagnetic pulse valve. When the pulse valve is open, the compressed air in the air bag jets out a high speed and high pressure ejection airflow through the pulse valve and through the holes in the blowpipe, and then forms an induced defect flow equivalent to 1 ~ 2 times of the volume of the ejection airflow, which enters into the filter barrel together, making the filter barrel present a temporary positive pressure and bulge and wiggle. The dust deposited on the filter falls off and falls into the dust hopper. The dust in the hopper passes through the unloader and is discharged one after another. In this method, the filter cartridge is cleaned successively, and the pulse valve is opened and closed one pulse action at a time. The required time is 0.1 ~ 0.2s. The interval time between the two adjacent opening and closing of the pulse valve is 1 ~ 2min, and the time required for all the filter cylinders to complete a ash clearing cycle is 10 ~ 30min.


4, the characteristics of the filter cartridge filter cartridge filter is as follows: (1) because of the use of the filter material folding, placement density, dust collector compact structure, small volume, filter material function to be patient. (2) small filter barrel height, convenient device, small amount of repair operation; (3) The filter area of the same volume dust collector is relatively large, the filter wind speed is small, little resistance; (4) filter material folding requirements at both ends of the seal strict, can not have air leakage, otherwise it will drop.



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