XKBF-01291 Loader accessories Excavator accessories Main relief valve hydraulic pump

The electromagnetic valve of the excavator plays a controlling role.

1, solenoid valve is an industrial equipment controlled by electromagnetic, is used to control the basic components of fluid automation, belongs to the actuator, not limited to hydraulic, pneumatic. Used in industrial control systems to adjust the direction of media, flow, speed and other parameters.

2, the solenoid valve can be combined with different circuits to achieve the desired control, and the accuracy and flexibility of the control can be guaranteed. There are many kinds of solenoid valves, different solenoid valves play a role in different positions of the control system, the most commonly used are check valves, safety valves, direction control valves, speed regulating valves and so on.

If the solenoid valve is broken, there will be obvious manifestations and symptoms, such as the gearbox will make a noise, there will be a feeling of frustration when upshifting and downshifting, the fuel consumption of the vehicle will become more, the vehicle is difficult to start when it is cold, and there will be a lack of power when driving.

The working principle of the solenoid valve:

The solenoid valve uses an electromagnet to push the valve core to control the direction of compressed air, thereby controlling the direction of the pneumatic actuator switch.

Its advantage is simple operation, easy to achieve remote control.

Electromagnetic directional valve according to different requirements can achieve two three-way, two five-way and so on.

The electromagnet used to operate the solenoid valve is divided into AC and DC:

1. The voltage of AC electromagnet is generally 220 volts. It is characterized by large starting power, short reversing time and low price. However, when the valve core is stuck or the suction is not enough and the iron core is not sucked on, the electromagnet is easy to burn out due to excessive current, so the working reliability is poor, the impact of action, and the life is low.

2, DC electromagnet voltage is generally 24 volts. Its advantages are reliable work, not because the spore is stuck and burned out, long life, small size, but the starting power is smaller than the AC electromagnet, and in the absence of DC power supply, the need for rectification equipment.

In order to improve the working reliability and life of the electromagnetic reversing valve, in recent years, wet electromagnet is increasingly widely used at home and abroad, this electromagnet and the slide valve push rod do not need to be sealed, eliminating the friction at the O-shaped sealing ring, its electromagnetic coil outside directly sealed with engineering plastic, not another metal shell, which ensures insulation, but also conducive to heat dissipation, so reliable work, Low impact, long life.