What is the specific function of the hydraulic control check valve? Let Dalan Hydraulics tell you!
What is the specific function of the hydraulic control check valve? Let Dalan Hydraulics tell you!
The role of the hydraulic control check valve is as follows:
1. Keep the pressure slide valve type reversing valve with gap leakage phenomenon, which can only keep pressure for a short time. When there is pressure requirement, a hydraulic control check valve can be added to the oil circuit to make the oil circuit keep pressure for a long time by using the tightness of the closing of the cone valve. 2. The "support" of the hydraulic cylinder is in the vertical hydraulic cylinder. Due to the leakage of the slide valve and the pipe, the piston and the piston rod may fall under the gravity of the piston and the piston rod. Connecting the pilot-operated check valve to the oil passage in the lower chamber of the hydraulic cylinder prevents the movable parts such as the piston and the slider of the hydraulic cylinder from sliding down.
3. Realize the locking of the hydraulic cylinder When the reversing valve is in the neutral position, the two hydraulic control check valves are closed, and the oil in the two chambers of the hydraulic cylinder can be tightly sealed. At this time, the piston cannot move due to the external force.
4. The effective working area of the two chambers of the large flow oil discharge hydraulic cylinder differs greatly.
5. When the piston is retracted, the oil displacement in the right chamber of the hydraulic cylinder suddenly increases. At this time, if a small flow spool valve is used, a throttling effect will be generated to limit the retreat speed of the piston; if a hydraulic control check valve is added, When the hydraulic cylinder piston retreats, the control pressure oil opens the hydraulic control check valve, and the right chamber oil can be smoothly discharged.
6. As the piston of the vertical hydraulic cylinder of the oil filling valve, during the high-speed lowering process, due to the action of the high-pressure oil and the self-weight, the drop is rapid, and the suction and negative pressure are generated, and the oil-removing device must be added. The hydraulic control check valve is used as a charge valve to complete the oil filling function.
7, combined into a reversing valve
When designing a hydraulic circuit, it is sometimes possible to combine a pilot operated check valve into a reversing valve.
For example, using two pilot-operated check valves in parallel with a one-way valve (center valve is centered) is equivalent to a three-way three-way directional control valve. It should be pointed out that when the control pressure oil port is not working, it should be led back to the fuel tank, otherwise the control piston is difficult to reset, and the check valve cannot reverse the flow in the reverse direction.
The above points are the functions of the hydraulic control check valve summarized by the company. If there are different opinions, please discuss together!
----- Editor-in-Chief: Dalan Oil Pump Motor 02-Procurement Consultant
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