Pulse electromagnetic valve structure and working principle of the air box pulse bag filter box, bag room, ash bucket, air inlet and outlet composition, with a pillar, ladder, railing, gas system, cleaning controller. 
 1), the cabinet box is fixed bag cage, bag and pneumatic components, made of closed form. When cleaning, compressed air first to enter the box and into the inside of the each bag, with access door at the top for installation and replacement of the bag cage, with bag. The cabinets are divided into several rooms, each other with steel plates separated from each other airtight in order to achieve offline cleaning, each room has a poppet valve off filter dust airflow. 
 2), ash hopper ash hopper arranged in the lower part of the cabinet, which in addition to the store down the dust collected as the intake manifold using the dusty gas into the bag room before entering the ash hopper, ash buckets, so that the air flow speed is reduced, coupled with changes in flow direction, so that coarse dust particles have been isolated here, furnished with a screw conveyor or air chute and other transportation equipment exports also has a rotary unloader or flap valve within the ash bucket Lock wind equipment, continuous ash. 
 The air box pulse bag filter it works: When the dusty gas from the air inlet into the ash bucket, part of the coarse dust particles due to inertial impaction, natural sedimentation, and other reasons fall into the ash bucket, most of the dust with the air rising into the chamber bag after bag filter, dust retention in the bag outside, the purification of gas inside the bag into the box, and then discharges to atmosphere from the outlet to reach the collecting purpose. Precipitator with the conduct of the filter bag outside of the dust is gradually increased, the resistance movement has gradually increased, when the resistance reaches a preset value, the cleaning controller signals, the first control poppet valve plate close the hole, to cut off the airflow of the filter dust, and stop the filtering process, and then the electromagnetic pulse valve is opened to the cabinets in a very short time (0.1-0.15S) is injected into the pressure 0.4-0.6MPa of compressed air, compressed air in cabinets rapid expansion into the bag south of the bag deformation, vibration, coupled with the role of reverse airflow, the bag outside of the dust is cleared down to fall into the ash bucket after cleaning, the poppet valve is opened again, collecting and entered Filter status. 




 Pulse control instrument control mode 

 The pulse jet control device is a pulse bag filter cleaning system of the main control device. Its output driving electromagnetic pulse valve, and thereby control the compressed air bag sequential injection cleaning dust filter to keep the resistance within the set range, to ensure that the processing power and collection efficiency of the precipitator. 
 Controller output every time the drive voltage, and a drive voltage duration, called the pulse width. Adjacent to the interval between two output drive voltage, known as the pulse interval. Control device to complete the time required for electromagnetic valve drive output, called the pulse period. Pause time between two pulse cycles, known as the cycle interval. 
 According to the cycle interval, pulse interval and pulse width control of electromagnetic pulse valve opening and closing the implementation of regular cleaning, dust collector cleaning requirement. At the same time has a differential pressure control device input contacts connected to the differential pressure control device can be set differential pressure cleaning. 
 The control device core control by a SCM to achieve the key parameter setting, digital display and the cycle interval, pulse interval and pulse width control, according to the pressure differential input signal and the selection of stop mode to control the cleaning run. And pulse width of the signal sent to the SD-M-3002 dedicated circuit to complete the count, decoding, and the pulse distribution control. SD-M-3002 dedicated circuit output terminal, set the pulse width signal to the electronic switch, the control of electromagnetic pulse valve open, blowing compressed air cleaning, while the light-emitting diode display the injection sequence. This control is fully functional, easy to operate.