Electromagnetic pulse valve is mainly used in dust removal equipment. It has the characteristics of stable performance, high purification efficiency, long service life, large air volume and wide application range.
The electromagnetic pulse valve is divided into front and rear air chambers. When the compressed air is connected, the compressed air enters the rear air chamber through the orifice. At this time, the pressure of the rear air chamber presses the diaphragm assembly close to the output port of the valve. The pulse valve is in the “closed” state.
The electrical signal of the pulse controller makes the moving iron core of the electromagnetic pulse valve move up, the exhaust hole of the rear air chamber of the pulse valve is opened, the rear air chamber loses pressure rapidly, the diaphragm assembly moves up, and the compressed air is injected through the output port of the pulse valve. Pulse valve is open.
The electromagnetic pulse valve is the compressed air “switch” of the dust cleaning and injection system of the pulse bag filter. For the situation that the valve is opened for a long time and only closed for a short time, a normally open solenoid valve should be selected. Special settings can be made when it is used in short-time work system and the batch size is large. Controlled by the output signal of the pulse jet controller, the filter bags are cleaned and discharged one by one to keep the resistance of the dust collector within the set range, so as to ensure the processing capacity and dust collection efficiency of the dust collector.
Now the more commonly used pulse valve is DCF-Y-76S submerged solenoid valve. The diaphragm divides the electromagnetic pulse valve into two air chambers. The compressed air processed by the oil-water separator enters the rear air chamber through the orifice. At this time, the rear air The chamber pressure pushes the diaphragm assembly close to the output port of the valve, and the electromagnetic pulse valve is in the “closed” state.
The pulse valve is injected for about 100 milliseconds (the injection time can be adjusted), the electrical signal of the pulse controller disappears, the moving iron core of the pulse valve is reset, and the exhaust hole of the rear air chamber of the pulse valve is closed, so that the actual pressure increases and the diaphragm assembly Close to the output port of the hair, the pulse valve is in the closed state again.
Technical requirements of electromagnetic pulse valve:
- When the working air source pressure is 0.1MPa, the pulse valve can be closed;
- When the working voltage of the electromagnetic valve is 85% of the rated voltage under the nominal air source pressure of the product, the opening response time of the electromagnetic pulse valve should be less than 0.03s;
- The working pressure of the product is 0.1MPa～0.7MPa, and the medium is air that has been treated with degreasing and water removal;
- The product should be able to withstand the air source pressure of 0.8MPa;
- Under the specified environmental conditions, the insulation resistance of the electromagnetic coil to the shell should be greater than 1MΩ;
- Under the condition that the room temperature is 5-35 degrees and the relative humidity does not exceed 85%, the electromagnetic coil can withstand the voltage of 50Hz and 250V on the shell, and there is no breakdown phenomenon for 1min;
- The electromagnetic pulse valve should be able to work normally after being subjected to vibration with a frequency of 20Hz, a full amplitude of 2mm, and a duration of 30min;
- Under normal use conditions, the cumulative service life of the diaphragm should be greater than 800,000 times;
- The appearance of the valve has no obvious coating peeling, scratches, burrs and other damages.