Excavator hydraulic pump proportional solenoid valve micro-rotary solenoid valve TM68001

         There are many kinds of solenoid valves on small excavators. First of all, we must know the

working principle of the solenoid valve. The solenoid valve of the excavating machinery uses an

electromagnet to push the valve core to control the direction of compressed air, so as to control

the direction of the pneumatic actuator switch. Electromagnetic directional valve according to

different requirements can achieve two three-way, two five-way and so on.Solenoid valve for small

excavator

       First, the structure of the solenoid valve: coil, magnet, ejector rod.

      The working principle of the solenoid valve of the small excavator is that when the coil is connected

with the current, it generates magnetism, attracts each other with the magnet, the magnet pulls the

ejector rod, turns off the power, the magnet and ejector rod are reset, and the operation process is

completed.Second, the electromagnet used to operate the solenoid valve on the small excavator is

divided into AC and DC.

      The voltage of AC electromagnet is generally 220V, which is characterized by large starting force, short

reversing time and low price. However, when the valve core is not stuck enough and the iron core is not

sucked on, the electromagnet is easy to burn out due to excessive current, so the working possibility is poor,

the action has impact, and the life is short. The voltage of the DC electromagnet is generally 24V, and its

advantage is that it works reliably, will not burn out due to the spore sticking, and has a long life.