Working principle of filter cartridge dust collector
2021-10-17
Here is the working principle of the filter cartridge dust collector organized by Tangshan Lantian Aoyu Technology Co., Ltd. for you
After the filter cartridge dust collector enters the dust containing gas into the dust hopper of the dust collector, due to the sudden expansion of the airflow cross-section and the effect of the airflow dispersion plate, a portion of coarse particles in the airflow settle in the ash hopper under dynamic and inertial forces; After the fine particle size and small density of dust particles enter the filter chamber, they undergo combined effects such as Brownian dispersion and screening, causing the dust to accumulate on the surface of the filter material. The purified gas enters the purification chamber and is discharged through the exhaust pipe and fan.
The resistance of the filter cartridge dust collector increases with the increase of the thickness of the dust layer on the surface of the filter material. Clean the ash when the resistance reaches a specified value. At this moment, the PLC program controls the opening and closing of the pulse valve. The first chamber raises the valve and closes it, cutting off the filtered air flow. Then, the electromagnetic pulse valve opens, and compressed air and a short period of time quickly expand in the upper chamber, flowing into the filter cylinder, causing the filter cylinder to expand and deform, causing oscillation. Under the effect of reverse airflow brushing, the dust attached to the outer surface of the filter bag is peeled off and falls into the ash hopper. After the ash cleaning is completed, the electromagnetic pulse valve is closed, the lifting valve is opened, and the room recovers from filtration. The cleaning of each room is carried out in sequence, with one cleaning cycle from the beginning of cleaning in the top room to the beginning of the next cleaning. The detached dust falls into the ash hopper and is discharged through the ash discharge valve.
It is necessary to regularly replace and clean the filter cartridge during this process to ensure the filtering effect and accuracy. In addition to being blocked during the filtering process, some dust will accumulate on the surface of the filter material, increasing resistance. Therefore, the correct replacement time is generally three to five months!
Select skills to modify speech
4.1 Ash cleaning equipment
There are two cleaning methods for traditional cartridge dust collectors, one is high-pressure airflow reverse blowing, and the other is pulse airflow spraying. Practice has shown that the former has the advantage of uniform airflow, while the disadvantage is high air consumption; The advantage of the latter is its low air consumption, while the drawback is the small airflow. Two improvements can be made to this end: on the one hand, a guiding device can be added to the pulse blowing tube to enhance the airflow induction effect, and on the other hand, the upper guiding air duct of the filter cartridge can be removed, allowing the pulse airflow and induced airflow to enter the filter cartridge abundantly together. After this improvement, the air consumption is reduced, the air flow is uniform, and the ash cleaning effect is good. According to calculations, the ash cleaning air flow rate after skill improvement is 3-5 times that of pulse air flow.
4.2 Air volume distribution board
The airflow dispersion of the filter cartridge dust collector is important, and it is necessary to consider how to avoid high wear areas on the filter material at the equipment inlet due to high wind speed. The airflow dispersion plate has special requirements for the use of filter cartridge dust collectors, and the airflow dispersion needs to be very stable and uniform. Only then is it conducive to the rise of air flow and the decrease of dust, and the opening rate of the air flow distribution plate is 35%. According to the calculation, the resistance coefficient is less than 2, indicating that the porous airflow dispersion plate can meet the requirements of the filter cartridge dust collector when the airflow speed is less than 0.8m/s.
Dust removal process modification voice
1. Capture Separation Process
① Capture and transition stage. Essentially, it is the concentration stage of dust. The dust that is uniformly mixed or suspended in the carrier medium enters the dust removal space of the dust collector. Due to the effect of external forces, dust is pushed to the separation interface, and as the dust moves towards the separation interface, the concentration increases, further preparing for solid-gas separation.Here is the working principle of the filter cartridge dust collector organized by Tangshan Lantian Aoyu Technology Co., Ltd. for you
After the filter cartridge dust collector enters the dust containing gas into the dust hopper of the dust collector, due to the sudden expansion of the airflow cross-section and the effect of the airflow dispersion plate, a portion of coarse particles in the airflow settle in the ash hopper under dynamic and inertial forces; After the fine particle size and small density of dust particles enter the filter chamber, they undergo combined effects such as Brownian dispersion and screening, causing the dust to accumulate on the surface of the filter material. The purified gas enters the purification chamber and is discharged through the exhaust pipe and fan.
The resistance of the filter cartridge dust collector increases with the increase of the thickness of the dust layer on the surface of the filter material. Clean the ash when the resistance reaches a specified value. At this moment, the PLC program controls the opening and closing of the pulse valve. The first chamber raises the valve and closes it, cutting off the filtered air flow. Then, the electromagnetic pulse valve opens, and compressed air and a short period of time quickly expand in the upper chamber, flowing into the filter cylinder, causing the filter cylinder to expand and deform, causing oscillation. Under the effect of reverse airflow brushing, the dust attached to the outer surface of the filter bag is peeled off and falls into the ash hopper. After the ash cleaning is completed, the electromagnetic pulse valve is closed, the lifting valve is opened, and the room recovers from filtration. The cleaning of each room is carried out in sequence, with one cleaning cycle from the beginning of cleaning in the top room to the beginning of the next cleaning. The detached dust falls into the ash hopper and is discharged through the ash discharge valve.
It is necessary to regularly replace and clean the filter cartridge during this process to ensure the filtering effect and accuracy. In addition to being blocked during the filtering process, some dust will accumulate on the surface of the filter material, increasing resistance. Therefore, the correct replacement time is generally three to five months!
Select skills to modify speech
4.1 Ash cleaning equipment
There are two cleaning methods for traditional cartridge dust collectors, one is high-pressure airflow reverse blowing, and the other is pulse airflow spraying. Practice has shown that the former has the advantage of uniform airflow, while the disadvantage is high air consumption; The advantage of the latter is its low air consumption, while the drawback is the small airflow. Two improvements can be made to this end: on the one hand, a guiding device can be added to the pulse blowing tube to enhance the airflow induction effect, and on the other hand, the upper guiding air duct of the filter cartridge can be removed, allowing the pulse airflow and induced airflow to enter the filter cartridge abundantly together. After this improvement, the air consumption is reduced, the air flow is uniform, and the ash cleaning effect is good. According to calculations, the ash cleaning air flow rate after skill improvement is 3-5 times that of pulse air flow.
4.2 Air volume distribution board
The airflow dispersion of the filter cartridge dust collector is important, and it is necessary to consider how to avoid high wear areas on the filter material at the equipment inlet due to high wind speed. The airflow dispersion plate has special requirements for the use of filter cartridge dust collectors, and the airflow dispersion needs to be very stable and uniform. Only then is it conducive to the rise of air flow and the decrease of dust, and the opening rate of the air flow distribution plate is 35%. According to the calculation, the resistance coefficient is less than 2, indicating that the porous airflow dispersion plate can meet the requirements of the filter cartridge dust collector when the airflow speed is less than 0.8m/s.
Dust removal process modification voice
1. Capture Separation Process
① Capture and transition stage. Essentially, it is the concentration stage of dust. The dust that is uniformly mixed or suspended in the carrier medium enters the dust removal space of the dust collector. Due to the effect of external forces, dust is pushed to the separation interface, and as the dust moves towards the separation interface, the concentration increases, further preparing for solid-gas separation.
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