The reasons and solutions for the gear pump not producing oil
The reasons and solutions for the gear pump not producing oil can be summarized as follows:
1. Reasons for the gear pump not producing oil
Wrong rotation direction: If the rotation direction of the gear pump is opposite to the specified direction, the pump will not work properly and will not produce oil.
The suction level is too low: The suction level is lower than the suction port of the pump, so that the pump cannot inhale enough oil.
The oil filter is blocked or too small: The oil filter is blocked by impurities or is too small, resulting in the oil not being able to pass smoothly.
The oil temperature is too low and the viscosity is high: In a low temperature environment, the viscosity of the oil increases and the fluidity becomes worse, affecting the pump's oil suction capacity.
The suction line is blocked: There are impurities or blockages in the suction line, resulting in the oil not being able to enter the pump smoothly.
Poor oil suction: There are leaks or blockages in the suction pipeline and joints, affecting the suction of the oil.
The gear pump has insufficient displacement: The pump displacement is improperly set or the pump itself has insufficient displacement, which cannot meet the oil output requirements.
The gear pump speed is too low: The speed of the drive motor is insufficient, resulting in the pump speed being too low, affecting the oil output.
The oil viscosity is too high: The oil viscosity is too high, which increases the oil suction resistance of the pump and makes it difficult to discharge the oil.
The safety valve is stuck or damaged: The safety valve cannot work properly, causing the oil to circulate in the pump and cannot be discharged.
2. Solution
Correct the rotation direction: Check and adjust the wiring of the motor to ensure that the rotation direction of the gear pump is consistent with the specified direction.
Add oil to raise the liquid level to the specified height: Increase the amount of oil in the oil tank to bring the liquid level to the specified height.
Clean the oil filter or replace the large-flow oil filter: Clean the oil filter regularly to ensure that it is unobstructed; if the oil filter is too small, replace the large-flow oil filter.
Preheat the oil: Preheat the oil in a low-temperature environment to reduce its viscosity and improve fluidity.
Check and clean the suction line: Check whether the suction line is unobstructed and clean the impurities and blockages in it.
Check and repair the suction pipe and joints: Check whether the suction pipe and joints have leaks or blockages, and replace the sealing ring or reinstall the joints in time.
Replace the appropriate gear pump or adjust the pump displacement: If the pump displacement is insufficient, replace the gear pump with a larger displacement or adjust the pump displacement setting.
Check and adjust the motor speed: Check whether the speed of the drive motor is normal. If the speed is too low, adjust the motor speed or replace the appropriate drive motor.
Replace the appropriate oil or reduce the oil viscosity: Select the type of oil suitable for the pump. If the oil viscosity is too high, replace the oil with a lower viscosity or take other measures to reduce the oil viscosity.
Check and replace the safety valve: Check whether the safety valve is working properly. If the safety valve is stuck or damaged, it should be cleaned or replaced with a new safety valve in time.
