Analysis of Pressure Regulating Failure of Relief Valve of Single Column Hydraulic Press

Analysis of Pressure Regulating Failure of Relief Valve of Single Column Hydraulic Press

The damping hole on the main valve core of the single-column hydraulic press is blocked, and the hydraulic pressure cannot be transmitted to the upper cavity of the main valve and the front cavity of the poppet valve, and the pilot valve loses its role in regulating the pressure of the main valve. Because there is no oil pressure in the upper chamber of the main valve and the spring force is very small, the main valve becomes a direct-acting relief valve with a small spring force. Open the overflow, the system will not be able to build pressure.

Deformation or wrong selection of the pressure regulating spring, excessive leakage in the valve or excessive wear of some cone valves of the pilot valve are the basic factors that the pressure cannot reach the set value.

The damping hole on the cone valve seat of the pilot valve of the single-column hydraulic press is blocked, and the oil pressure cannot be transmitted to the cone valve, and the same pilot valve loses its role in regulating the pressure of the main valve. After the damping hole is blocked, under the pressure of the sun, the poppet valve cannot be opened to drain the oil, there is no oil movement in the valve, the oil pressure in the upper and lower chambers of the main valve core is equal, and the main valve core is closed under the action of the spring force. In this case, it cannot be overflowed, and the pre-valve pressure of the relief valve increases with the increase of the load. When the actuator movement is completed and the external load increases infinitely, the pressure of the system increases infinitely.

If the remote control port of the relief valve of the single-column hydraulic press is connected with a pressure regulating valve, it is assumed that the control port is blocked, the pipeline between the control port and the pressure regulating valve is long, and there is air entering, which constitutes abnormal pressure scheduling.

The inner sealing ring of the overflow valve of the single-column hydraulic press is damaged, and the main valve core and the cone valve core are too worn, resulting in serious internal and external leakage, making the dispatching pressure unstable and even unable to operate normally. This article is from the official website of the manufacturer WORLD Press Machine www.pressmachine-world.com, please indicate the source for reprinting!

Finding a reliable solution for the mechanical power press automatic power press machine not only supports operation of the entire system but also enhance the beauty of your workplace.

If you follow these straightforward steps you can keep your automatic power press machine automatic power press machine. I think this article will help you make a wise decision on choosing the right .

automatic power press machine mechanical power press is one of the most commonly used tool for automatic power press machine.

WORLD is one of the top brands in their class when it comes to mechanical power press and automatic power press machine. If you check online, WORLD is often rated high and reviewed with much praise. we would be very pleased to receive your inquiry.