Improvement measures for filter cartridge dust collector technology: 1. Cleaning device: Traditional filter cartridge dust collectors have two cleaning methods, one is high-pressure air flow back blowing, and the other is pulse air flow blowing. Practice has shown that the former has the advantage of uniform air flow, but the disadvantage is high air consumption; The advantage of the latter is low gas consumption, but the disadvantage is weak airflow. Two improvements can be made for this: on the one hand, a guide device can be added to the pulse blowing tube to enhance the airflow induction effect, and on the other hand, the upper guide duct of the filter cartridge can be removed to allow both pulse airflow and induced airflow to fully enter the filter cartridge at the same time. After this improvement, the air consumption is reduced, the airflow is uniform, and the dust cleaning effect is good. According to calculations, the dust cleaning airflow flow rate after the technical improvement is 3-5 times that of the pulse airflow. 2、 Gas distribution board: The airflow distribution of the filter cartridge dust collector is very important. Consider how to avoid high wear areas on the filter material caused by high wind speed at the equipment location. The airflow distribution plate is used for filter cartridge dust collectors with requirements for stable and uniform airflow distribution. It is beneficial for the increase of airflow and the decrease of dust, and the opening rate of the airflow distribution plate is 35%. According to calculations, the drag coefficient is less than or equal to; 2. It can be seen that when the airflow velocity is less than or equal to; At a speed of 0.8m/s, the porous airflow distribution plate can meet the requirements of the filter cartridge dust collector. The standard for filter cartridge dust collector: 1. The filter cartridge uses polyester fiber as the filter material, and adheres a layer of ultra-thin fibers at the sub micron level to the general filter material. The arrangement of fibers on this adhesion layer is very tight, and the sieve holes can block most of the sub micron level dust particles on the surface of the filter material; 2. The use of pleated filter media can increase the filtration area and make the structure of the dust collector compact; 3. The height of the filter cartridge is small, and the installation and maintenance workload is small; 4. Compared with dust collectors of the same volume, the filtration area is relatively large, the filtration wind speed is small, and the resistance is not high; 5. The single machine dust collector adopts pulse jet online dust cleaning method. The dust cleaning process is automatically controlled by a pulse controller. Multiple filter cartridges are installed inside the dust collector to increase its filtering area. When one (pair) of filter cartridges meets the requirements for dust cleaning, the spraying device is activated for dust cleaning, and the other filter cartridges work normally. This achieves the dust cleaning effect without affecting the operation of the equipment, allowing the dust collector to operate continuously; The combined dust collector adopts offline pulse automatic circulation cleaning in separate rooms for dust cleaning. Multiple filter cartridges are installed in each dust removal chamber to increase its filtering area. When a filter cartridge in a certain dust removal chamber meets the requirements for dust cleaning, the spraying device is activated for dust cleaning, and other dust removal chambers work normally. This not only improves the dust cleaning effect but also allows the dust collector to operate continuously; 6. Dust removal (generally up to 99.6% or more), easy to operate; The main performance indicators of the filter cartridge dust collector are that the pulse airflow is directly sprayed into the interior of the filter cartridge without passing through the Venturi. This will cause negative pressure on one end (upper part) of the filter cartridge near the pulse valve, while the other end (lower part) of the filter cartridge will experience pressure. This will result in different cleaning of the upper and lower parts of the filter cartridge, which may shorten its service life and prevent the equipment from achieving cleaning. For this purpose, a filter cartridge with a Venturi nozzle can be installed at the outlet of the pulse valve or on the pulse spray pipe. Improve the distribution of injection pressure to a more uniform full filter height positive pressure injection. Dust accumulation in the folding seams of the filter cartridge will make cleaning difficult. Therefore, filter cartridges with large folding areas (each with a filtration area of 20-22m2) are generally only suitable for applications with lower inlet concentrations. Compare commonly used filter cartridge sizes and filtration area. The gas distribution box of the pulse blowing device of the filter cartridge dust collector shall comply with the provisions of JB/T10191-2000. Clean airflow should be free of water, oil, and dust. Under specified conditions, the pulse valve and its interface should have no air leakage and be able to open and close normally and work properly. The pulse controller should work accurately, and its injection time and interval can be adjusted within a range. When installing the induction spray device in conjunction with the spray pipe. The nozzle of the induction spray device should be coaxial with the spray hole on the spray pipe and maintain the same verticality as the nozzle, with a deviation of less than 2mm.
