Types and functions of pulse valve for bag filter ~3in). The air consumption of one injection per valve is 30～600m3

/min (0.2～0.6MPa). It is worth noting that the working pressure of the domestic pulse valve is 0.4 ~ 0.6MPa for right angle valve and straight valve, and 0.2 ~ 0.6MPa for submerged valve; no matter which kind of valve is imported, the working pressure range is 0.06 ~ 0.86MPa, two There is no difference between pressure and application pressure.

①Structure and working principle of right-angle pulse valve

The characteristic of the right-angle pulse valve is that the air inlet and outlet pipes of the valve are at a right angle of 90°. The construction of the right angle pulse valve is shown in the figure. It can be seen from the figure that the diaphragm in the valve divides the electromagnetic pulse valve into two air chambers, the front and the rear. When the compressed air is connected, the compressed air enters the rear air chamber through the throttle hole, and the pressure of the rear air chamber will tighten the diaphragm. The output port of the stick valve, the pulse valve is in the "closed" state. The electric signal of the pulse blowing controller makes the armature of the electromagnetic pulse valve move, the vent hole of the air chamber behind the valve is opened, the rear air chamber loses pressure rapidly, the diaphragm moves backward, the compressed air can be sprayed through the valve output port, and the pulse valve is in the "open" state. "condition. Compressed air is instantly ejected from the valve to form a jet airflow.

When the electrical signal of the pulse controller disappears, the armature of the pulse valve is reset, the vent hole of the rear air chamber is closed, and the pressure of the rear air chamber rises to make the diaphragm close to the valve outlet, and the pulse valve is in the "closed" state again.

The technical parameters of our electromagnetic pulse valve are as follows.

a. Adapt to the environment: temperature -10 ~ +55 ℃; relative humidity not more than 85%.   b, working medium: clean air, dew point -20 ℃.   c, blowing air source pressure: 0.3～0.6MPa.

d. Air volume of injection: when the pressure of the air source is 0.6MPa, the injection time is 0.1s, and the outlet is vented,
e. Working voltage and current of electromagnetic pilot valve: DC24V, 0.8A; AC220V, 0.14A; AC110V, 0.3A.

f. The air inlet of the pulse valve is connected to the air bag, and the air outlet is connected to the blowing pipe. When the edge is connected, the thread should be filled with tetrafluoroethylene raw material tape to ensure the sealing. When connecting, it should be noted that the length of the thread at the intake end should not be too large, so as not to affect the amount of injected air.   ②The working principle of the submerged pulse valve structure     The submerged pulse valve adopts the installation method of being submerged in the air bag, so it is called the submerged type. The structure of the submerged pulse valve is shown in the figure. Compared with other structural forms, it reduces the resistance of the flow passage and the pressure of the injection air source, so it can be applied to the occasions with low pressure, and can reduce the energy consumption and prolong the life of the diaphragm. .

The working principle of the submerged pulse valve is that the diaphragm divides the pulse valve into two chambers, the front and the rear. 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 will close the diaphragm to the output port of the valve, and the pulse valve is in the "closed" state.

When the electric signal of the pulse controller makes the armature of the pulse valve move, the vent hole of the rear air chamber of the valve is opened, the rear air chamber loses pressure rapidly, the diaphragm moves, the compressed air is sprayed through the valve output port, and the pulse valve is in the "open" state. At this time, the compressed air flow is instantly ejected.

The electrical signal of the pulse controller disappears, the armature of the pulse valve is reset, the air hole of the rear air chamber is closed, and the pressure of the rear air chamber rises to make the diaphragm close to the valve outlet, and the pulse valve is in the "closed" state again.