Unloading valve A valve that unloads the hydraulic pump
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Release Time：2021-05-21
Unloading valve is under certain conditions, can make the hydraulic pump unloading valve. The unloading valve is usually an overflow valve with a two-position two-way valve (usually a solenoid valve). The function is to set the main pressure of the system (oil pump) when it is not unloading. When the unloading state (by the two-position two-way valve action conversion), the pressure oil directly returns to the oil tank, and the oil pump pressure drops to approximately zero, so as to realize some loop control, improve the service life of the oil pump and reduce power consumption. In a circuit that belongs to a merged circuit. The pressure reducing valve is used to adjust the pressure required for the implementation of components, is in series in the circuit, generally can not be used interchangeably.
Unloading valve is under certain conditions, can make the hydraulic pump unloading valve. The unloading valve is usually an overflow valve with a two-position two-way valve (usually a solenoid valve). The function is to set the main pressure of the system (oil pump) when it is not unloading. When the unloading state (by the two-position two-way valve action conversion), the pressure oil directly returns to the oil tank, and the oil pump pressure drops to approximately zero, so as to realize some loop control, improve the service life of the oil pump and reduce power consumption. In a circuit that belongs to a merged circuit. The pressure reducing valve is used to adjust the pressure required for the implementation of components, is in series in the circuit, generally can not be used interchangeably.
The working principle of unloading valve
The unloading relief valve is composed of relief valve and one-way valve. When the system pressure reaches the opening pressure of the overflow valve, the overflow valve opens and the pump unloads; when the system pressure drops to the closing pressure of the overflow valve, the overflow valve closes and the pump loads the system. The pressure at which the pump is unloaded is called the unloading pressure, and the pressure at which the pump is loaded is called the loading pressure.
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