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Excavator Hydraulic Solenoid Valve Of Hydraulic Pump Solenoid Valve 702-21-07010
Specifiion
Type | Excavator Hydraulic Solenoid Valve Of Hydraulic Pump Solenoid Valve 702-21-07010 |
Parts Number | 702-21-07010 |
Model Number | PC200-6 |
Video outgoing-inspection | Provided |
Stock | in Stock |
Payment method | Bank transfer, Western Union, oneyGram, credit cards, PayPal |
Service | OEM |
Video delivery inspection | Provide |
Warranty | 6 month |
Packing | Neutral packing |
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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