Design of Pulse Bag Dust Collector Device: The structural design measures of the bag dust collector manufacturer. In the design of the body structure, in order to prevent the accumulation of combustible dust in the internal components of the dust collector, all beams, partition plates, etc. should be equipped with dust-proof plates, and the slope of the dust-proof plate should be less than 70 degrees. The slip angle of the ash hopper is greater than 70 degrees. In order to prevent dust accumulation due to the small angle between the two hopper walls, two adjacent side plates should be welded with slip plates to prevent dust deposition. Considering the occurrence of ash hopper condensation and blockage due to abnormal operation and high dust humidity, when designing the ash hopper, steam pipe insulation or tubular electric heater should be added to the high-temperature dust collector on the ash hopper wall plate. To prevent material accumulation in the ash hopper, each ash hopper also needs to be equipped with a bin arm vibrator or air cannon. Grounding measures for bag filters Dust collectors are often arranged outdoors due to operational needs. Even when placed outdoors on tall steel structures, according to equipment grounding requirements, equipment grounding lightning protection becomes a measure, but dust collectors generally do not have lightning rods. The setting of holes (valves) in the pulse dust collector is important for limiting the explosion to the inside of the bag filter and preventing it from expanding to other areas. The purpose of setting holes is not to prevent explosions, but to limit the explosion range and reduce the number of explosions. Most dust collectors that handle explosive dust operate under the condition of setting holes. Because of this, the design of the hole should be effective in the event of an explosion accident; We need to strengthen the maintenance and management of holes in daily life. Plate is an emergency pressure relief device driven by pressure difference and not automatically closed, mainly used for pipelines or bag filters to prevent damage caused by overpressure or vacuum. Compared with valves, bursting discs have the advantages of large discharge area, sensitive action, and less likely to block. Explosive discs can be used alone or in combination with valves. Its characteristic is that when closed, the door is mainly locked by this lock, which can automatically open and release in case of explosion, and its release force (force) can be adjusted by a spring. In order to balance the force on the door, it is generally necessary to set 4-6 locks according to the door area. To ensure that the door is tightly sealed without air leakage, a dual structure of board and lock can be designed. The lock is mainly used to automatically open and release in the event of an explosion, and its release force can be adjusted by a spring. In order to balance the force on the door, it is generally necessary to set 4-6 locks according to the door area. To ensure that the door is tightly sealed without air leakage, a dual structure of board and lock can be designed. There are two main types of valve design: one is plate design; Another type is the heavy hammer valve. The former type needs to be replaced with a new board after rupture, and production needs to be interrupted. When encountering high negative pressure, it is easy to produce and difficult to maintain insulation. The latter type is slightly less tight than the former, relying on heavy hammer pressure in the closed state. Both of the above methods are not suitable for using high-voltage pulse dust cleaning. To address the issue of tightness, a lock can be designed on the heavy hammer type burst valve. The major design essentials of pulse bag dust collector: The pulse bag dust collector adopts an open cover, and the maintenance conditions - the pulse bag dust collector is an external filter continuous dust cleaning. The filter bag chamber is located on the dusty airflow side. When using a side opening door, the dust collector not only cannot enter the filter bag chamber during operation, but also the working conditions for maintenance personnel are extremely harsh during shutdown and maintenance. The correct selection of filtration speed and purification efficiency of the dust collector - the filtration speed of the pulse bag filter is directly related to the resistance of the dust collector and the inlet dust concentration of the treated flue gas. The resistance of the pulse bag filter currently produced domestically is limited to a range of 120 millimeters of water column. Adopting the pressure difference method pulse controller to improve the service life of the diaphragm - Currently, various factories and mines in China generally reflect the short service life of the diaphragm of the pulse valve in the use of pulse dust collectors, and spare parts are in short supply. In the total resistance of the pulse bag filter, the resistance of the horn tube at the compressed air nozzle accounts for a certain proportion. Increasing the filtration speed will significantly increase the resistance of the horn tube. The filtration speed of domestic pulse bag dust collectors is limited to a range of 2-4 meters per minute, mainly built on the basis that the resistance of the dust collector does not exceed 120 millimeters of water column and the inlet dust concentration of the body is less than 15 grams per cubic meter. When the dust concentration decreases, the filtration speed can be increased, but after the filtration speed exceeds 4 meters per minute, the structural resistance of the extractor will be reduced, and the resistance of the dust collector cannot be maintained at 120 millimeters of water column. Therefore, in the selection of filtration speed, it should be determined based on the inlet dust concentration of the body. Blindly using excessively high filtration speed to reduce equipment size will directly affect the purification effect of the dust collector. According to the current practical experience in domestic applications, the filtration speed of pulse dust collectors is generally recommended to be between 2.5 and 3 meters per minute. The process flow of using a pulse bag filter to treat industrial waste gas: The waste gas generated by the boiler is indirectly cooled by air and water, and then collected and treated by the pulse bag filter to meet the standard emission. The injection pressure of the pulse bag filter refers to the compressed air pressure of the pulse injection. The higher the injection pressure, the more secondary airflow is induced, and the faster the reverse air flow formed, the better the dust cleaning effect, and the more obvious the pressure drop of the bag filter. The pulse dust collector adopts a cylindrical three-dimensional structure designed with a new concept, with air entering from the top and flowing into the lower cone through the central air duct, evenly entering each chamber, and the design is becoming more reasonable. The production of pulse bag filter is relatively simple and feasible, which is why the dust removal principle of this equipment is simple and not easily damaged. Therefore, many manufacturers are willing to use this equipment to achieve the purpose of enterprise dust removal. During the operation of the pulse dust collector, high-temperature dust is stored in the cooling water tank. In order to increase the cooling area, the exhaust gas pipeline is transformed into several thin pipelines with a diameter of 6cm (usually 50), which improves the cooling effect. The pulse bag filter adopts a vertical filter cartridge structure, which is convenient for dust adsorption and cleaning; And due to the small shaking of the filter material during dust cleaning, the maintenance cost of the filter cartridge is low compared to the dust removal filter bag.
