Solenoid valve in the liquid road system (Dieselpartsworld) 2016-01-22    

Solenoid valve in the liquid road system used to realize fluid break or change the direction of liquid flow, it generally has a can coil driven by electromagnetic force under the sliding spool spool in different locations, electromagnetic valve pathway is different. Spool of the work position, the solenoid valve is called a few solenoid valve: the valve body on the interface, that is, the passage of the solenoid valve, there are several through the intersection, the solenoid valve is called a few solenoid valve.
In accordance with the number of gas solenoid valve can be divided into:
"X bit Y through" solenoid valve "X" represents a total of several state valve:
"2" means "on" and "off" 2 states - P - A, P - B, A - R, B - S and other states, the disconnected gas path are in the exhaust state;
"3" includes the above 2 states, also includes third States - for the first way exhaust / no exhaust, for the second exhaust / no exhaust state, there are a variety of combinations.
"Y" refers to the solenoid valve, a total of several holes, for the gas electromagnetic valve, because of the existence of exhaust may have two holes (1 and the gas inlet, a gas outlet), three holes (1 air inlet, a vent, a vent) and four holes (1 intake and two outlet, an exhaust), five holes (1 intake and two outlet, two exhaust); for the liquid electromagnetic valve, there is no exhaust, because the liquid is generally not emptying.
P - POWER, air inlet;
A - vent 1 (air cylinder);
R - the vent hole (B side coil has been controlled by electric or manual control, and the A side coil is not energized by the two Kong Xiangtong);
B - vent 2 (air cylinder);
S - the vent hole (A side coil has been controlled by electric or manual control, and the B side coil is not energized by the two Kong Xiangtong);
Two position two way solenoid valve (1 intake and 1 outlet)
When the power is cut off, the pressure port is connected to the cylinder mouth, and the pressure port and the cylinder mouth shut off when the power is electrified;
Two (three) three (1, 1, 1 intake air exhaust)
Normally open: when the power is cut off, the pressure port is connected to the cylinder port and the exhaust port is closed, the pressure port is closed and the cylinder mouth is connected to the exhaust port;
Normally closed: when power is off, the pressure port is closed and the cylinder head is connected to the exhaust port ---- power, the pressure port is connected to the cylinder port and the exhaust port is closed;
Normally a structure that allows the valve to be connected to a normally closed or normally open position, or one of the two fluids, or one that is converted from one port to another.
Two position four way solenoid valve (1, 2, 1 intake air exhaust)
Generally used for the operation of double acting cylinder, in a position, pressure port connected to a cylinder port, and another cylinder B port is connected to the exhaust port, in the second position, pressure port is connected to the cylinder B port, and another a cylinder port connection to the exhaust port;
Click to view original
Two five (1, 2, 2 intake air exhaust)
Working process: visible from the figure, the 1 is the intake pipe, 2, two, 4 are out of the trachea, 3, two, 5 is the exhaust pipe. When the 12 coil is energized, valve in the right valve, intake from 1 through the valve from 2 out, 4 gas through the valve from 5 discharged; when the 14 coil is energized, valve in the left valve, intake from 1 through the valve from 4 out, two gas through the valve from 3 discharge.
Five position two way double electric control electromagnetic valve action principle:
Action is the coil is energized to is action gas path connected were made of stomatal gas), even to the action is the coil power after is action gas path is still connected, and will be maintained until the to counter action coil is energized until the. To counter action coil is energized, the gas line is the inverse of the action switched on (to make holes reactionary gas), even to reverse action coil power after the gas path is still connected, and will be maintained until the to action is the coil is energized until the. This is equivalent to "self locking"".
Based on the characteristics of the two five pass double electric control electromagnetic valve, in the design of mechanical and electrical control circuit or the preparation of PLC program, can let the electromagnetic valve coil action 1 to 2 seconds can be, so can protect the solenoid valve coil is not easy to damage.