Electromagnetic pulse valve 1

Electromagnetic pulse valve refers to a diaphragm valve that combines an electromagnetic valve, a pilot valve, and a pulse valve, and is directly controlled by an electrical signal.

The function of electromagnetic pulse valve:

It is to control the magnitude of oil pressure in the oil circuit. It is generally installed in the main oil circuit or the back pressure oil circuit of the shock absorber to reduce the oil pressure shock during gear shifting and lock unlocking, so as to keep the equipment running smoothly.

According to the angle of valve inlet and outlet and the form of air inlet, it can be divided into three types:

a、 Right angle electromagnetic pulse valve: a diaphragm valve whose valve body inlet and outlet form a right angle and are directly controlled by electrical signals;

b、 Straight through electromagnetic pulse valve: a diaphragm valve with a valve body inlet and outlet angle of 180 degrees, directly controlled by electrical signals;

c、 Submerged electromagnetic pulse valve: a diaphragm valve with the valve body inlet submerged in the air bag and directly controlled by electrical signals.

In addition to the conventional three types of solenoid valves, there is also a large-diameter ultra-low pressure electromagnetic pulse valve for rotary injection.

Working principle of electromagnetic pulse valve:

The diaphragm divides the electromagnetic pulse valve into two chambers, front and rear. When compressed air is connected and enters the rear chamber through the throttle hole, the pressure in the rear chamber presses the diaphragm tightly against the output port of the valve, and the electromagnetic pulse valve is in the "closed" state. The electrical signal of the pulse jet controller disappears, the electromagnetic pulse valve armature resets, the rear chamber vent hole closes, and the pressure in the rear chamber increases, causing the diaphragm to tightly adhere to the valve outlet. The electromagnetic pulse valve is then in the "closed" state.

Technical requirements for electromagnetic pulse valve:

1. The working pressure of the product is 0.1MPa to 0.7MPa, and the medium is air that has undergone oil and water removal treatment.

2. When the operating voltage of the solenoid valve is 85% of the rated voltage under the nominal gas source pressure of the product, the opening response time of the electromagnetic pulse valve should be less than 0.03s.

3. When the working gas source pressure is 0.1MPa, the pulse valve can be closed.

4. The product should be able to withstand a gas source pressure of 0.8 MPa.

5. Under specified environmental conditions, the insulation resistance of the electromagnetic coil to the casing should be greater than 1M Ω.

6. Under the conditions of room temperature ranging from 5 ° C to 35 ° C and relative humidity not exceeding 85%, the electromagnetic coil can withstand a voltage of 50Hz and 250V on the casing without breakdown for 1 minute.

7. The electromagnetic pulse valve should be able to operate normally after being subjected to vibration with a frequency of 20Hz, a full amplitude of 2mm, and a duration of 30 minutes.

8. Under normal usage conditions, the cumulative service life of the membrane should be greater than 800000 times.

9. The surface of the valve has no obvious coating peeling, scratches, burrs or other damages.

10. The large-diameter ultra-low pressure electromagnetic pulse valve used for rotary jet blowing has a supply pressure of less than 0.1Mpa, uses compressed air, and is not affected by the simultaneous use of gas in the pipeline network, ensuring stable operation.