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MYD-LPMM series of grinding coal gas shock pulse bag type dust collector |
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 Product description |
The main technical characteristics
A ) using compressed air pressure pulse cleaning, cleaning intensity is high, suitable for the gas processing Gao Hanchen concentration.
B ) flame and explosion proof measures: using anti-static polyester needle felt, the body for explosion-proof structure, the ash cone angle greater than 70 degrees, ensure that the ash bucket no dust, the box is installed on the self-locking decompression explosion-proof door.
C ) automatic control : control of ash, cinder by PLC microcomputer. Automatic detection and alarm temperature, pressure.
D ) fire extinguishing device: ash using nitrogen, equipped with CO detection and CO2 fire extinguisher.
The structure and working principle
Structure description
This product adopts the chamber assembly structure, room by pulse valves on the top of each chamber in turn stopped gas box pulse cleaning ( i.e. off-line cleaning ), which is composed of the following parts.
1 shell: including cleaning chamber and a filter chamber. Clean room with a poppet valve, plate, blowing tube; the filter chamber side is provided with a pressure relief blast doors, inside the bag and filter bag skeleton.
2 ash and cinder valve: according to the different models are divided into a plurality of ash and single bucket, ash bucket angle greater than 70 degrees, the ash unloading valve is star unloader or flap valve.
3 import box: including the import separator air pipeline and. Single row layout model, import box at one side of the shell, the double structure layout model, in the middle of the shell body all the bellows. A series of small no box, inlet and outlet pipeline are respectively connected to the ash cleaning room.
4 pulse cleaning device: including pulse valve, air bag, air cylinder and the electromagnetic valve poppet valve.
5 compressed air pipeline and gas source connected three etc..
The 6 pillars and columns cage ladders, railings.
Working principle
Filter process:
The dusty air enters from the air inlet filter import bellows in the body, the oblique baffle to ash, while the air flow rate, under the inertia effect, coarse particles of dust into ash hopper, dust particles with air and folded up into the filter chamber, filter bag dust on the surface of the filter cake in the dust, be blocked at the outer side of the filter bag, purified gas into the clean room by the filter bag, a wind box together through the lifting valve open, the atmosphere of fan system.
Cleaning conditions:
When the dust control system sends out the dust control signal, start cleaning process. Poppet valve shut off the first room, cut off the airflow through the filter chamber, the chamber exit filtering state (offline), and then open the pulse valve, release the high-pressure compressed air of the clean air chamber air speed is sprayed into the bag, the bag all of a sudden expansion deformation, thereby vibration table filter bag dust area attached, dust fall into the ash bucket. After settling time, control instrument to open the poppet valve, recovery of the chamber to the filtering condition ( online ). Cleaning process and then turn to start the other room, until the whole cleaning cycle.
Dust control:
Grey process is controlled by instrument control dust collector, with pressure difference control, timing control and manual control mode. Differential pressure control mechanism, is defined as the continuation of the filtering process, the outer surface of the filter bag dust accumulation accumulation, dust collector operation resistance also increased gradually, when the resistance of the dust remover reaches the preset value ( usually 1800Pa ), a control signal for activating the cleaning cycle, esp by implementation of the " go round and begin again room cleaning -- Settlement -- filtering " cycle, reduce the resistance of the dust remover to resistance until the limit set ( usually 1200Pa ). Differential pressure control mechanism can make the resistance of the dust remover has stabilized at a certain range, precipitator maintains the best removal efficiency and the lowest energy consumption.
Timing control is based on the experience of numerical implementation, arrange time cleaning, usually used for system operation is relatively stable treatment. Generally in the trial operation stage by running the observation, duration, adjust the bag room wind stopped blowing chamber injection time interval.
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