Excavator Hydraulic Solenoid Valve Of Hydraulic Pump Solenoid Valve 702-21-07010

Excavator Hydraulic Solenoid Valve Of Hydraulic Pump Solenoid Valve 702-21-07010

Specifiion
 

 
 
Description

Hydraulic solenoid valve is an automated basic component used to control fluids and belongs to actuators; it is not limited to hydraulics and pneumatics. Solenoid valves are used to control the direction of hydraulic flow. The mechanical devices in the factory are generally controlled by hydraulic steel, so solenoid valves are used.
The working principle diagram of the hydraulic solenoid valve generally shows that the structural main body of the solenoid directional valve is divided into a valve body and a cylindrical spool loed in the valve body. The spool can move axially in the valve body hole. The annular ring in the valve body hole The undercut groove is communied with the corresponding main oil holes (P, A, B, T) opened on the bottom surface of the valve body. When the shoulder of the valve core covers the undercut groove, that is, the oil passage is blocked. When the spool is cut off, the shoulder of the valve core not only covers the undercut groove, but also covers a length of the valve body hole beside the undercut groove. When the valve core moves and does not cover the undercut groove, the valve core is opened at this time, and the oil circuit is connected with other The oil circuit is connected. As a result, the electromagnetic directional valve can change the direction of the oil circuit and control the on-off of different oil holes with the help of the different positions of the valve core in the valve body.
The electromagnetic directional valve has different functions, and their control of the oil circuit is also different. The working of the electromagnetic directional valve is different mainly by replacing different forms of spools, and different spools cover the valve body's undercut grooves. Different, and then form different control functions.
According to the working principle of the hydraulic solenoid valve, it is not difficult to see that the electromagnetic directional valve must make the shoulder of the solenoid directional valve relatively close contact with the inner wall of the valve body in order to block the oil passage of a sinking groove, so as to ensure the best possible performance. Sealing performance. At the same time, it is necessary to maintain a very small distance to ensure that the valve core of the electromagnetic directional valve can move smoothly. At the same time, the oil can wet the shoulder surface of the valve core to avoid the shoulder of the valve core and the electromagnetic valve. The hole wall in the valve body of the reversing valve is directly rubbed, which will seriously shorten the service life of the electromagnetic reversing valve, and even directly cause the valve core to be worn out and scrapped, making the electromagnetic reversing valve unusable.

Characteristic

1. Small size, can be installed in narrow space.
2. Since it is a cartridge type, it is easy to install and remove, and it has excellent maintainability.
3.The cartridge holes of the proportional valve and the switching valve are shared, and it is convenient to replace the circuit.
4. It corresponds to the solenoid valve block of various circuits, making multiple solenoid valves into a whole.
5. Fast delivery with good price

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