1、 The structure and principle of a filter cartridge dust collector consists of six parts: an upper box, an ash hopper, a ladder platform, a bracket, a pulse cleaning ash and an ash discharge device. Filter cartridge dust collector; Under the action of the main fan in the system, the dusty gas enters the gas box at the bottom of the dust collector from the inlet at the bottom of the dust collector for pre-treatment, and then enters each dust removal chamber in the upper box from the bottom; Dust is adsorbed on the outer surface of the filter cartridge, and the filtered clean gas enters the clean air chamber of the upper box through the filter cartridge and collects at the air outlet for discharge. As the filtration process continues, more and more dust will accumulate on the outer surface of the filter cartridge, which will increase the operating resistance of the equipment. In order to ensure the normal operation of the system, the upper limit of the dust collector resistance should be maintained within the range of 1400-1600Pa. When this limit is exceeded, the PLC pulse automatic controller should issue commands through fixed resistance or timing to perform three state dust cleaning. The cleaning process of a filter cartridge dust collector is to first cut off the clean air outlet channel of a certain room, so that the room is in a static state of airflow, and then perform compressed air pulse back blowing to clean the dust. After a few seconds of natural settling, the clean air outlet channel of the room is opened again, which not only cleans the dust, but also avoids the secondary adsorption of dust generated by spraying and cleaning the dust, so as to circulate cleaning the dust room by room. 2、 Introduce some suggestions when choosing a filter cartridge dust collector. Although the filter cartridge dust collector has great advantages, its current application is not very common, and there are still many technical difficulties that need to be improved, especially the filter material and dust cleaning system. With the widespread application of filter cartridge dust collectors in various industries, different filter materials are required for different material properties. Existing filter materials such as fibers, polyesters, and films can no longer meet the demand, so new types of filter materials are becoming increasingly urgent. The industrial filter cartridge dust collector has a large volume and a relatively long filter cartridge. How can the upper, middle, and lower parts of the entire filter cartridge achieve good dust cleaning effect; In industry, the cleaning of filter cartridges is generally done online in rotation. How to minimize the mutual influence between filter cartridges without affecting the dust removal effect remains to be further studied in the future. At present, filter cartridge dust collectors are widely used in various industries. It is particularly important to choose a suitable filter cartridge dust collector for one's own working conditions, which can directly affect the dust removal effect. Therefore, below we will share with you a suggestion about selection. 1. The principle of selecting filter materials: The dust removal filter cartridge of the filter cartridge dust collector is usually made of pulp, synthetic fiber, or surface coating with pulp or synthetic fiber as the substrate. Raw materials have different physical and chemical properties, and are suitable for the same usage conditions or working environment. Therefore, the correct principle for selecting filter media for filter cartridge dust collectors should be to fully understand the physical and chemical characteristics of the dust containing gases emitted during the production process, carefully compare the technical performance of various fibers, and make the correct selection. 2. The correct method for selecting dust removal filter cartridges. The correct method for selecting a filter cartridge includes: selecting based on the physicochemical properties of the dusty gas; Select based on the characteristics of the dust; Select based on the total amount of dust explosion; And the selection of emission standards for filter cartridges and dust collectors, etc. (1) Select filter materials based on the physical and chemical properties of dusty gases, including temperature, humidity, corrosiveness, flammability, and explosiveness. ① The temperature of the dust containing gas emitted during the production process is a crucial factor in the correct selection of filter materials for the filter cartridge dust collector. According to the temperature of continuous use, filter cartridges can be divided into three categories: normal temperature filter cartridges, medium temperature filter cartridges, and high temperature filter cartridges. For working conditions with large temperature fluctuations in dusty gases, it is advisable to choose a slightly larger coefficient, but the instantaneous peak temperature should not exceed the upper limit temperature of the filter cartridge. In most high-temperature working conditions, cooling equipment should be pre-set. ② The corrosiveness of dusty gases varies, and the chemical resistance of fibers is also affected by various factors such as temperature and humidity. Compared to others, polytetrafluoroethylene fibers, known as the "plastic king", have excellent chemical resistance but are relatively expensive. Therefore, when selecting filter materials, based on the chemical composition of the dusty gas, grasp the main factors and choose the appropriate material. (2) Select filter cartridges based on the characteristics of dust. The characteristics of dust include its chemical and physical properties. Now, we focus on analyzing the material, structure, and post-treatment of filter materials based on the physical properties of dust. ① The shape and particle size distribution of dust are usually regular. The products generated during high-temperature combustion processes are mostly regular shaped dust, while most process generated dust particles are mostly irregular in shape. Regular shaped dust has a smooth surface and a small specific surface area, making it less likely to be intercepted or agglomerated when passing through filter materials; On the contrary, irregular dust particles have different shapes, rough surfaces, and large specific surface areas, which are easily intercepted and condensed when passing through filter materials. When selecting filter materials for filter cartridge dust collectors, the following points should be noted: wood pulp fibers should be selected with finer, shorter, curled, and irregular cross-sectional shapes; Whether using wood pulp fibers or synthetic non-woven fibers, the development direction of selecting filter materials is to achieve surface filtration through surface spraying, impregnation, or film coating; Fine particulate dust is difficult to capture and can easily form a dense dust layer after capture, which is not conducive to dust cleaning. On the contrary, coarse particulate dust is easy to capture, and the dust layer formed after capture is relatively loose, which is conducive to dust cleaning. In a sense, the combination of coarse and fine dust is beneficial for both filtration and dust cleaning. ② Dust has the characteristics of mutual adhesion or adhesion to other surfaces. When suspended dust comes into contact with each other, they adsorb and condense together. The cohesion of dust is related to various factors such as its type, shape, particle size distribution, moisture content, and surface characteristics. Overall, the angle of repose can be used to characterize the cohesion of dust. (3) Select filter materials based on the total amount of dust outbreak: the filtration efficiency of the filter cartridge dust collector is also related to the total amount of dust outbreak. When the amount of dust is large, it is advisable to use fiber filter materials such as wood pulp fibers. When the amount of dust is small, it is advisable to use polyester fiber filter materials. (4) Select filter materials based on the emission indicators of the filter cartridge dust collector: the selection of filter materials is also related to the emission indicators of the dust collector. When the dust collector is discharged outdoors and emits general particulate matter, the filter material can be wood pulp fiber or synthetic non-woven fiber; When the dust collector discharges indoors, choose substrate coated filter material. Usually, the total amount of dust and emission indicators are considered comprehensively as the basis for selecting filter materials. 3、 Daily maintenance of filter cartridge dust collector: 1. Impurities in the gas main pipe for pulse valve need to be discharged regularly (once a month). 2. The discovery of ash emission from the ash discharge outlet indicates that the filter cartridge has been leaking and should be repaired and replaced in a timely manner. 3. The filter cartridge dust collector should be operated and maintained by a dedicated person, who should understand the performance and structure of the dust collector, promptly address any issues, and ensure the normal operation of the system. 4. The resistance of the dust collector is generally 1400-1600Pa, and the cleaning cycle can be adjusted appropriately according to the resistance situation. 5. Regularly inject oil into the transmission parts.
