Working principle editor
The diaphragm divides the EMP valve into two chambers: front and rear. When the compressed air is connected through the throttle hole to enter the acquired chamber, the pressure of the back chamber closes the diaphragm to the output port of the valve, and the EMP valve is in a “closed” state. The electric signal of the pulse injection controller disappears, the armature of the electromagnetic pulse valve is reset, the vent hole of the rear chamber is closed, and the pressure of the rear chamber rises, which makes the film close to the outlet of the valve, and the electromagnetic pulse valve is in a “closed” state. The electromagnetic pulse valve controls the opening and closing of the unloading hole of the valve body according to the electric signal. When the valve body unloads, the pressure gas in the back chamber of the valve is discharged, the pressure gas in the front chamber of the valve is throttled by the negative pressure hole on the diaphragm, the diaphragm is lifted, and the pulse valve is injected. When the valve body stops unloading, pressure gas fills the back chamber of the valve rapidly through the damper hole. Because of the difference of the stress area between the two sides of the diaphragm on the valve body, the gas force in the back chamber of the valve is large. The diaphragm can reliably close the nozzle of the valve and stop the injection of the pulse valve.
The electric signal is timed in milliseconds, and the instantaneous opening of the pulse valve generates a strong shock air flow, thus realizing instantaneous injection.
Post time: Nov-10-2018