MDC explosion-proof bag dust collector adopts anti-static filter material, and its body has explosion-proof structure and pressure relief device, which has explosion-proof performance. It is suitable for collecting flammable and explosive dust in pulverized coal preparation system. The equipment has few mechanical moving parts, less maintenance workload and convenient bag changing. Due to the use of pulse chamber cleaning, the dust removal efficiency is high, and it can run efficiently for a long time, and the dust removal efficiency is over 99.8%. PDC ordinary dust collector has the same advantages as above except that it has no explosion-proof performance. MDC。 PDC coal mill explosion-proof antistatic bag dust collector can be widely used for waste gas dust removal in cement, electric power, metallurgy, chemical industry and other industries. Such as cement mill, raw meal mill, mine crushing, material lifting, transportation and other dust collection points can be used.
MDC。 PDC coal mill explosion-proof. Structure of antistatic bag filter;
MDC and PDC bag filters adopt negative pressure operation and external filtration. The shape of the dust collector is shown in the figure. ? The dust collector consists of dust-containing gas inlet, filter chamber, clean gas outlet, back-blowing ash cleaning device, explosion-proof valve, ash hopper, ash unloading valve and other main components.
MDC。 PDC coal mill explosion-proof. Working principle of antistatic bag filter;
MDC。 PDC coal mill explosion-proof. Anti-static bag filter adopts two-stage dust removal. In the first stage, the inertial dust collector is used for pre-dust removal, and the bag dust collector has the function of secondary dust removal. Dust-laden gas first enters the pre-dust collection chamber and meets obstacles, forcing the direction of dust-laden airflow to change sharply. Coarse dust changes its original moving direction because it hits obstacles. Part of it falls into the ash hopper, and the rest enters the filter room with filter bag with airflow. Dust adheres to the outer surface of the filter bag, and clean gas passes through the filter bag and is discharged into the atmosphere through the upper clean room, exhaust duct and fan.
As the dust attached to the fabric surface of the filter bag thickens, the resistance of the dust collector immediately rises, so it is necessary to clean the dust. Dust attached to the outer surface of the filter bag is blown away by the pulsating airflow blown into the filter bag, and the cleaning work is carried out room by room. This pulsating air flow can make the whole filter bag vibrate evenly and blow through the filter bag from the inside out, so it has a high ash cleaning effect. The opening and closing action of the ash cleaning chamber is controlled by the solenoid valve, and the compressed air drives the cylinder valve to complete it. The whole cleaning work is completed by reverse blower, pulse valve, cylinder and cleaning control system.
MDC。 PDC coal mill explosion-proof. Dust removal control system of antistatic bag filter;
1. The control mode of dust removal can be divided into two modes: timing control and constant resistance. Timing control adjusts the time parameters such as dust removal cycle according to the time required to reach the design resistance, and automatically cleans the dust at regular intervals in turn. Constant resistance control automatically cleans the dust according to the preset resistance of the dust collector. Parameters such as backblowing time of a single chamber, backblowing time interval between chambers, dust removal action time, conveying time and so on can be changed manually.
2. Ash cleaning control devices can be divided into two types: microprocessor automatic control and manual control. The timing ash cleaning, ash discharging and ash discharging parameters of microcomputer system can be modified at will through computer keyboard. Constant resistance dust removal is to input the signal of the pressure transmitter of the dust collector into the microcomputer, and then issue an instruction to drive the dust removal device.
3, manual control can also be fixed resistance at regular intervals. Verify parameters by operation according to time. According to the time or the resistance value displayed by the pressure display instrument, the ash cleaning operation is carried out.
MDC。 PDC coal mill explosion-proof. Characteristics of antistatic bag filter;
MDC explosion-proof bag dust collector adopts anti-static filter material, and its body has explosion-proof structure and pressure relief device, which has explosion-proof performance. It is suitable for collecting flammable and explosive dust in pulverized coal preparation system. The equipment has few mechanical moving parts, less maintenance workload and convenient bag changing. Because the pulse chamber is used for cleaning, the dust removal efficiency is high and it can run efficiently for a long time. The dust removal efficiency can reach above 99.9, and the emission concentration is 30mg/Nm3. The working pressure of compressed air is 0.5-0.7Mpa, which has strong ash cleaning ability and wide application range, and can handle dusty gases with high concentration and viscosity. High degree of automation, adjustable injection time and interval period, and regular or constant pressure ash removal. It can treat high concentration smoke and dust above 100g/ Nm3. The patented nozzle blowing device can not only generate instantaneous inflation gas, but also effectively protect the filter bag and prolong its service life.