Solution to Abnormal High Pressure in Hydraulic Press
The information comes from:the Internet posted on:2023-08-29
The hydraulic mechanism of hydraulic presses, due to the inevitability of starting and stopping hydraulic impacts in practical production, seriously affects the working efficiency of four column hydraulic presses. Therefore, people should adopt sufficient measures to solve the problem. The essential method to prevent manic and restless high pressure is to set speed control valves in the circuit and alleviate night pressure impacts.
(1) The hydraulic press has abnormal high pressure, and a speed regulating valve is set in the hydraulic circuit to prevent the circuit from being manic and unstable due to high pressure. When cylinder 1 is interrupted, due to inertia, the water pressure in the main cylinder increases. A speed control valve is installed below to prevent manic and restless high pressure. Prevent components from being out of position and causing manic, unstable, and high voltage circuits. When cylinder 2 decreases, if balance valve 1 is defective and out of position, the hydraulic cylinder side will generate manic and unstable high pressure. Setting speed control valve 3 can only prevent such situations. To prevent manic and unstable high voltage circuits during interruptions. When the air resistance of the oil motor 2 controller is high, and the directional valve 1 returns to the neutral position, a large night pressure impact is generated. Setting the brake valve 3 can release the compressed high pressure oil, and then it can pass through the one-way valve to suck in compressor lubricating oil from the engine hood to fill the positive air in the other side of the oil pipe, preventing cavitation.
(2) The abnormal high pressure of the hydraulic press alleviates hydraulic impact, and a residual valve is used to alleviate the circuit of night pressure impact. When starting, the electro-hydraulic directional valve 1 and electromagnetic directional valve 2 adjust the speed together, the opening of the reserve valve 3 is slow and the motor 5 is in a slow position. When interrupted, the opening of the reserved valve 3 is slowly reduced by the electromagnetic directional valve 2, causing the motor speed to decrease. At this time, the electro-hydraulic directional valve 1 is in the direction of the management bureau and the motor completely stops. The timing of acceleration and deceleration is adjusted by energy-saving facilities. Relieving hydraulic impact can also be achieved through setting hydraulic cylinder endpoint caching methods and distance saving controls.
To alleviate the hydraulic impact of the hydraulic press, it is necessary to set the hydraulic cylinder short point buffer strategy and distance temperature reduction control to maintain it. Setting a speed regulating valve in the hydraulic circuit of the hydraulic press is to avoid abnormal force and high pressure in the circuit. When the hydraulic cylinder terminates, due to inertia, the water pressure in the main cylinder increases. A speed control valve is installed below to avoid abnormal high pressure.
