Cylinder control valve selection
Single-acting cylinder - 3-way solenoid valve
Double-acting cylinder - 4.5-way solenoid valve
Control various fluids - 2.3-way solenoid valve
The switching actions of the double-acting cylinder are driven by the air source;ventilation is on, ventilation is off, and the air is cut off to remain in place;
For single-action switches, only the opening action is driven by the air source, while the closing action is spring-return;(microCylinderMore)
Single-action is divided into: normally open type and normally closed type.
Normally open type: (ventilation off, air off and on);
Normally closed type: (open for ventilation, closed for ventilation).
The strokes are all selected according to specific industrial and mining requirements. Single-acting valves are generally used when power and gas are cut off, and the valve is required to be opened or closed. Single-acting ones are more expensive than double-acting ones, and double-acting ones are generally used. The specifics still depend on the user's industry and mining.
Single-actingCylinderVS Double-actingCylinder ’s advantages and disadvantages are compared as follows:
1. Single-acting is cheaper than double-acting and the entire gas circuit costs less.
2. The recovery speed of the cylinder spring is stable and is not affected by changes in air pressure.
Disadvantages:
1. Under the same pressure and flow rate, single-acting speed is slower than double-acting.
2. Single-action has a single function than double-action. (For example, double-acting can be connected to a three-position five-way middle seal, medium voltage, etc. to achieve safety functions, but single-acting cannot achieve this function)
What to do with the total exhaust of the cylinder control valve
Pneumatic solenoid valves are always connected to output gas to supply pneumatic cylinders and other tasks. After the pneumatic solenoid valve switches the direction of the output port, the gas that has been input into the cylinder must be discharged and return to The solenoid valve is discharged through the exhaust port of the valve (in order to reduce the exhaust noise, a muffler is also installed). The other side can then enter the gas and push the cylinder in the opposite direction. As the cylinder moves to extend and retract, it performs intermittent exhaust, which is necessary! Without exhaust, air cannot be taken in, and the pneumatic cylinder cannot continue to switch. That's what the exhaust port is for.
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