Operation of the electromagnetic pulse valve pulse jet bag filter cleaning system spray blowing road "switch", the diaphragm of the valve body is the key to the positive line, into the street by the pulse control device controls the diaphragm of the valve body vibration "impulse" of the last pulse jet dust control area after the diaphragm is greater than before the control area, the pressure force. So that the diaphragm in a crucial position. Pulse controller input signal, the solenoid pilot head and pull transport, open vent hole. The diaphragm controlled pressure gas is rapidly discharged. Diaphragm controlled pressure gas diaphragm lift to open the electromagnetic pulse valve channel into the street blowing, the signal disappeared, the springs of the solenoid pilot head moving column to reset immediately closed the vent hole, diaphragm control gas pressure and diaphragm spring force to close the channel, the electromagnetic pulse valve to stop blowing, the resistance on the pulse valve diaphragm hole, when the gas pressure unloading pilot head moving column lift, play the role of the resistance to airflow, when the closure of unloading , so that the pressure of gas quickly filled the cavity after the diaphragm to close the channel, stop the injection.