Bag dust collectorsare highly efficient environmental protection equipment for treating air pollution, and they are key devices for purifying and treating fine particulate matter and achieving ultra-low emissions. Among various types of dust collector equipment, bag dust collectors are the most widely used environmental protection equipment with a large number of applications. Whether the design of a bag dust collector is excellent and whether its operation and maintenance are appropriate are directly related to the actual effect of dust removal. In response to the environmental protection requirements for air pollution control, designing a good set of bag dust collectors is of great significance for effectively promoting energy conservation and emission reduction and advancing environmental protection work.
The pulse solenoid valve is a core component of the pulse bag dust collector, and the quality of its performance indicators is directly related to the actual operation effect of the bag dust collector. If the pulse solenoid valve malfunctions, the operating resistance will increase significantly, thus greatly affecting the normal operation of the bag dust collector until the filter bags of the dust collector are torn or shattered. Therefore, high-quality genuine pulse solenoid valves must be selected for bag dust collectors.
Basic working principle of the pulse solenoid valve: The dust-laden gas from the industrial boiler enters the filter bags for filtration through the inlet smoke duct. The dust is blocked and stays on the surface of the filter bags of the dust collector. The air enters the clean gas chamber through the mouths of the filter bags, and then converges into the outlet smoke duct and is discharged through the lifting valve. When the blowing time of the bag dust collector reaches the preset value, the control system issues an instruction, and the blowing and dust-removing system starts to work. Once the solenoid valve receives the signal, it will open immediately. The compressed air in the air tank is blown into the bags through the output pipe and the blowing pipe to achieve the purpose of dust removal. When the control signal stops, the solenoid valve closes, the blowing stops, and the bag dust collector returns to the normal filtering state.
The main malfunction problems of the pulse solenoid valve usually include: (1) The sealing gasket of the solenoid valve of the pulse valve is punctured; (2) The electrical control system of the filter bags of the dust collector malfunctions; (3) The diaphragm is damaged and some other common problems. The first two malfunction problems are more common. The top of the bag dust collector is generally open. Due to the influence of the actual working conditions, the sealing rubber gasket of the pulse solenoid valve is very prone to aging and failure. Under the influence of the compressed air, air leakage is likely to occur. Once air leakage occurs, the leakage point will gradually expand and then be punctured, resulting in a decrease in the pressure in the blowing air tank, so that the pulse solenoid valve cannot receive the signal and the solenoid valve does not operate.
