The working principle of the solenoid valve base and the cause of air leakage in the silencer

The pneumatic solenoid valve is always connected with output gas to supply the pneumatic cylinder and other pneumatic actuators to work. The used gas needs to flow back to the solenoid valve and be discharged through the exhaust port. In order to reduce the exhaust noise, a muffler is installed. When working, it is necessary to perform intermittent exhaust according to the working frequency! It's also normal. If the pneumatic system does not act or work, but continues to exhaust air, it is a problem with the pneumatic systemSolenoid valve base is "leaking". The most likely situation of air leakage is:



The sealing ring on the piston ring in the pneumatic cylinder is worn or otherwise damaged, causing the air inlet chamber of the cylinder to 'cross-flow' into the air outlet chamber (the air is not properly connected) The two chambers are separated), and the gas flows out from the other chamber uninterrupted, which is the air leakage at the muffler (answering the uninterrupted exhaust).



There is another very rare possibility: under the premise that there is no problem inside the cylinder, the pneumatic Solenoid valve There may also be an internal failure that causes the valve core to move. It is blocked and cannot be positioned accurately, resulting in "air cross" in the valve (the air intake and exhaust are connected), and "air leakage" may also occur.

There are two ways to deal with the leakage of the silencer equipped with the solenoid valve base: < /span>



1. Install a magnetic ring switch before and after the cylinder of the solenoid valve base for program control of the timer to control its air leakage.



2. Take out the cylinder from the muffler attached to the solenoid valve base and install a new cylinder.



The reason why the silencer equipped with the solenoid valve base keeps leaking:< br />


1. The air intake joint is not tightened properly and the cylinder is loose.



2. There is a problem with the control program of the solenoid valve base.



The working principle of the solenoid valve base:



There is a closed cavity in the base of the solenoid valve, with through holes at different positions. Each hole leads to a different oil pipe. There is a valve in the middle of the cavity and two pieces on both sides. The electromagnet, whichever side of the magnet coil is energized, will be attracted to which side the valve body is. By controlling the movement of the valve body, different oil drain holes are blocked or leaked. The oil inlet hole is always open, and the hydraulic oil is It will enter different oil drain pipes, and then push the oil-rigged piston through the pressure of the oil. The piston in turn drives the piston rod, and the piston rod drives the mechanical device.