With the lengthening of the filter time, the dust layer on the filter bag keeps accumulating and the resistance of the dust removal equipment keeps rising. When the resistance of the equipment rises to the set value, the dust removal device starts to clear the dust.A compartment lifting valve is closed to cut off the filter air flow, and then the electromagnetic pulse valve is opened. Compressed air expands rapidly in the upper box in a very short time and flows into the filter bag, which causes the expansion and deformation of the filter bag to generate vibration, and under the action of reverse air erosion, the dust attached to the outer surface of the filter bag is stripped and dropped into the dust bucket.After clearing the ash, the electromagnetic pulse valve is closed and the lifting valve is opened.Dust removal each room in turn, from the beginning of dust removal to the next beginning of a dust removal cycle.After filtering and ash removal, the dust trapped falls into the dust bucket, and then is discharged centrally by the ash discharging device at the mouth of the dust bucket.Pulsed dust collector is a new type of pulsed dust collector which is improved on the basis of MC-I type.High purification efficiency, large gas treatment capacity, stable performance, long life of filter bag, easy operation, small maintenance workload and other advantages.
The pulse dust collector is when the dust gas enters the dust collector from the air inlet and outlet, encounters the inclined plate and the baffle in the middle of the air inlet and outlet, the air flow then turns into the dust bucket, at the same time the air flow speed slows down, because of the inertial action, causes the gas in the coarse particle dust directly to flow into the dust bucket.Into the role of dust advance, ash hopper air then fold and upward through internal filter bag dust containing metal skeleton was set on the outer surface of the filter bag, after purification, the upper gas into the filter bag chamber clean room, packed into the outlet discharge, through the filter bag dust gas purification process, with the increase of time and accumulate more and more attached to the filter bag dust, increase the resistance of filter pocket, the parameters of gradually reduce, to work, to control the resistance in range (140-170 mm water column), once more than to soot cleaning of filter bag, dust triggered by pulse controller order of each pulse valve control valve open,The compressed air in the air bag is sprayed into the corresponding filter bag by the holes in the spray pipe and the filter bag expands rapidly instantly, making the dust accumulated on the surface of the filter bag fall off, and the filter bag returns to its initial state.The dust falls into the dust bucket and is discharged through the ash discharging system.Thus, dust accumulated on the filter bag can be periodically pulsed and sprayed to clear the dust, so that the purified gas can pass through normally and the dust removal system can be guaranteed to operate.
The ash-cleaning process is to cut off the clean air outlet air duct of the chamber first, so that the cloth bag of the chamber is in the state of no airflow (stop the wind and ash-cleaning in separate Chambers).Then open pulse valve with compressed air pulse blowing ash removal, the cut-off valve closing time enough to ensure after blowing off from the filter bag dust settling to the hopper, to avoid the dust on the surface from the filter bag and then currents set attached to the adjacent phenomenon on the surface of the filter bag, filter bag dust, and the programmable controller of exhaust valve and pulse valve, discharge valve automatic control, etc.Dust-containing gas enters from the air inlet, and when it passes through the dust bucket, some large particles of dust in the gas are separated by inertia force and gravity, and fall directly into the bottom of the dust bucket.After passing through the dust bucket, the dust-containing gas enters the filter bag filtering area of the middle box. When the gas passes through the filter bag, the dust is prevented from remaining on the outer surface of the filter bag. The purified gas enters the upper box through the filter bag mouth, and then is discharged by the air outlet.
Pulsed dust collector means to remove dust attached to the filter medium (cloth bag or filter cylinder) by spraying compressed air.According to the size of the filter may have several groups of pulse valve, the pulse controller or PLC control, every time a group of pulse valve open to remove its control of that part of the dust bag or filter cartridge, cartridge and other bag or normal work, after a while the next set of pulse valve open, clean up the next part of the dust catcher by ash hopper, on housing, the housing, the housing parts, such as lower housing, which is chamber structure.When working, dust gas enters the dust bucket from the air inlet, coarse dust particles directly fall into the bottom of the dust bucket, fine dust particles enter the middle and lower cabinet with the airflow transition, dust accumulation is attached to the outer surface of the filter bag, and the filtered gas enters the upper cabinet to the clean air collector -- exhaust duct, and is discharged to the atmosphere by the exhaust fan.
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