Considerations for Connecting the Hydraulic Pump of a 630-ton Hydraulic Press
1.The hydraulic pump of the 630-ton hydraulic press can be used together with shaft or flange equipment. The pump and the prime mover should be used together with the base. Both the flange and the base should have satisfactory rigidity. Note: Plunger pumps with a flow rate greater than 160L/min are not suitable for equipment on tanks.
2.A flexible coupling should be used between the hydraulic pump and the output shaft of the prime mover. It is prohibited to pump hydraulic fluid directly on the hydraulic pump shaft or gear drive. If pulleys or gears need to be connected to the pump, a pair of bearings should be added to the equipment to drive the pulley or gear. The coaxiality error between the bearings and the pump shaft should not exceed Φ0.05mm.
3.The suction pipe should be as short, straight, large, and thick as possible. A coarse filter should generally be installed in the suction pipe, with a nominal flow rate not less than 2B of the pump flow. The outlet pipe of the hydraulic pump should be directly connected to the oil tank, and the back pressure of the return oil should not exceed 0.05MPa. The suction and return ports of the oil pump should be located below the oil level of the tank by 200mm. Care should be taken not to install an equipment filter on the suction line of the plunger pump. The diameter of the cutoff valve on the suction line should be greater than the diameter of the suction line. The length of the suction line should be less than 2500mm, and the number of bends in the pipeline should not exceed 2.
4.The inlet and outlet of the hydraulic pump should be stable, and the sealing equipment should be secure. Otherwise, air intake or oil leakage may occur, affecting the functionality of the 630-ton hydraulic press hydraulic pump.
5.The self-priming height of the hydraulic pump should not exceed 500mm. If an oil pump is selected, the oil pressure should not exceed 0.5MPa. When the oil pressure exceeds 0.5MPa, the pressure seal should be replaced. For plunger pumps, the self-priming method should be used whenever possible.
6.Before installing the hydraulic pump of the 630-ton hydraulic press, check whether the depth of the equipment hole is greater than the shaft extension length of the pump to avoid the phenomenon of upper shafting. Otherwise, the pump may be burnt.