Introduction to gas box pulse bag filter: Gas box pulse bag filter belongs to a type of bag filter. The Chinese name for the pulse bag dust collector is air pollution control equipment, which belongs to the term "air box pulse dust collector" in the field of dust collectors. The main body of the pneumatic pulse bag filter is divided into several box areas, with 32, 64, 96 filter bags in each box. There is a lifting valve driven by a cylinder on the outlet pipe on the side of each box. When the dust collector is filtering the dusty gas, the dust cleaning controller will send a signal, and the lift valve of each chamber will start to close and cut off the filtered airflow; Then the pulse valve in the chamber is opened, and compressed air greater than 0.4 MPa is injected into the clean air chamber to remove the dust on the filter bag; After this action is completed, the lift valve will reopen, allowing the chamber to resume filtering work, and complete all dust cleaning actions one by one according to the above procedure. The pneumatic pulse bag filter adopts a separate chamber for dust cleaning. During dust cleaning, each box is isolated and rotated. The pulse and cleaning cycle of each compartment are automatically and continuously carried out by the cleaning program controller according to the pre-set program, thus achieving the effect of compressed air cleaning. The entire box design adopts an outlet main pipe structure, and the ash hopper can be extended below the main pipe, allowing the incoming dusty flue gas to directly enter the expanded ash hopper to achieve the effect of pre dust removal. So the gas box pulse bag filter can not only handle dust containing gases of general concentration, but also handle dust containing gases. The pneumatic pulse bag filter is a bag filter with the level of the 1990s. It combines the advantages of various bag type dust collectors such as chamber back blowing and jet pulse cleaning, overcoming the shortcomings of insufficient chamber back blowing cleaning intensity and simultaneous jet pulse cleaning and filtration, thus expanding the application range of this dust collector. Due to the unique structure of this type of dust collector, it improves dust collection efficiency and extends the service life of filter bags. This series of products is widely used for dust collection in systems such as crushing and packaging warehouses, clinker cooling machines, and grinding machines in cement plants, as well as for dust collection and material recovery in waste gases from metallurgy, chemical, food, grain, electricity, and civil boilers. The filter material of this dust collector is generally made of polyester needle punched felt when the operating temperature is less than 120 ℃. If the temperature reaches 210 ℃, aramid needle punched felt is used. But this filter material is expensive. If the temperature is too high, cooling measures should be taken. This series of dust collectors is an outdoor type with 33 specifications consisting of different numbers of rooms and bags per room. Each room has four types of bags: 32, 64, 96, and 128. The number of dust collection rooms ranges from 3 to 28, the filtration area ranges from 93 to 4361M2, and the processing air volume ranges from 6900 to 314000M3/H. This dust collector can operate under negative or positive pressure, and its dust collection efficiency can reach. If the outdoor temperature is below -25 ℃, insulation devices need to be added. Debugging and maintenance of the pneumatic pulse bag dust collector: 1. Preparation before debugging: (1) Before the linkage test of the pneumatic pulse bag dust collector, all auxiliary equipment should be inspected and tested according to the instructions. (2) Re inject lubricating grease into all parts that require it. (3) Tap the fan to check if the direction of operation is correct. Perform a single machine test run for no less than 2 hours before installing the flexible joint. (4) Start the ash unloading equipment such as rigid impeller unloaders, spiral conveyors, etc., check if the operating direction is correct, and conduct a single machine test run for no less than 1 hour. (5) Before installing the equipment, the air compressor should be tested for use during the installation process and for debugging of the air circuit and cylinder. It is advisable to place the air compressor in a well ventilated and relatively clean operating room. (6) The linkage trial operation can only be carried out after all auxiliary equipment has been tested and found to be normal. 2. Linkage test drive: (1) Start all equipment according to the electrical start-up sequence and operation method. (2) Adjust the dust cleaning controller to ensure that the lifting valve and electromagnetic pulse valve operate in the correct sequence, and that the dust cleaning sequence for each chamber is correct. (3) The pressure of compressed air for blowing should be maintained at 0.5-0.7 MPa. (4) Check if the motor and mechanical transmission parts of the pneumatic pulse bag filter equipment are operating normally. If there are any errors, they need to be adjusted. (5) Perform equipment no-load operation debugging, requiring all parts to operate normally. (6) Perform equipment load operation debugging, requiring all parts to operate normally, and adjust the cleaning cycle according to changes in equipment operating resistance. 3. Equipment maintenance and upkeep during operation: (1) Determine the dust collection capacity of the dust removal equipment and the ash discharge cycle based on the suction volume of the pulse bag dust collector system in the air box. (2) Determine the drainage cycle based on the water accumulation in the air bag of the compressed air system's gas-liquid separator. (3) Regularly check whether the pulse cleaning system of the dust collector is blowing normally. If it is not normal, focus on checking whether the pulse valve diaphragm and solenoid valve are malfunctioning or damaged, and repair or replace them in a timely manner. (4) Regularly check whether the equipment is operating normally based on the fluctuation of resistance during operation. (5) Regularly check the usage of vulnerable parts according to the list of vulnerable parts and replace them in a timely manner. (6) Regularly replenish lubricating oil to the components that require lubrication on the equipment. The cycloidal pinwheel reducer should replace the 2 # sodium based grease in the gearbox every six months, and the bearing lubrication points should be replenished with 2 # lithium based grease once a week. (7) Regularly check if there is any blockage in the differential pressure transmitter and clean it up in a timely manner.
