-how to clean the coffee machine solenoid valve?-what's wrong with the coffee machine?
-how to clean the coffee machine solenoid valve?-what's wrong with the coffee machine?
1. Direct-acting coffee machine solenoid valve
Principle: when electrified, the electromagnetic coil produces an electromagnetic force to lift the closing part from the valve seat, and the valve opens; when the power is off, the electromagnetic force disappears, the spring presses the closing part on the valve seat, and the valve closes.
Features: it can work normally under vacuum, negative pressure and zero pressure, but the diameter generally does not exceed 25mm.
two。 Step-by-step direct-acting coffee machine magnetic valve
Principle: it is a combination of direct motion and pilot principle. When there is no pressure difference between the inlet and outlet, the electromagnetic force directly lifts the pilot valve and the main valve closure up in turn, and the valve opens. When the starting pressure difference between the inlet and outlet is reached, the electromagnetic force pilot small valve, the lower chamber pressure of the main valve rises and the upper cavity pressure decreases, thus using the pressure difference to push the main valve upward; when the power is cut off, the pilot valve uses the spring force or medium pressure to push the closing part and move down to close the valve.
Features: it can also operate under zero pressure difference or vacuum or high pressure, but the power is large, so it must be installed horizontally.
3. Pilot coffee machine solenoid valve
Principle: when electrified, the electromagnetic force opens the pilot hole, the pressure of the upper chamber drops rapidly, and a low and high pressure difference is formed around the closing part, and the fluid pressure pushes the closing part upward, and the valve opens; when the power is off, the spring force closes the pilot hole, and the inlet pressure forms a low and high pressure difference around the closing valve part through the by-pass hole chamber, and the fluid pressure pushes the closing part downward and closes the valve.
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