OIL PUMPS

The working principle of diesel pump

Source:未知 Time:2021-06-29 15:19
The impeller is installed in the pump shell and fastened on the pump shaft, which is directly driven by the motor.
A liquid suction and suction pipe is connected in the center of the pump shell.
The liquid enters the pump through the bottom valve and suction pipe.
The liquid discharge outlet on the pump shell is connected with the discharge pipe.
Before the diesel pump starts, the pump shell is filled with the liquid to be transported;
After starting, after starting, the impeller is driven by the shaft to rotate at a high speed, and the liquid between the blades must also be rotated with it.
Under the action of centrifugal force, the liquid is thrown from the center of the impeller to the outer edge and obtains energy, leaving the outer edge of the impeller at a high speed and entering the cochlear pump shell.
In the volute, the liquid slows down due to the gradual expansion of the flow channel, and transforms part of the kinetic energy into static pressure energy, and finally flows into and out of the pipeline at a higher pressure to the place where it is needed.
When the liquid flows from the center of the impeller to the outer edge, a certain vacuum is formed in the center of the impeller. Because the pressure above the liquid level of the storage tank is greater than the pressure at the pump inlet, the liquid is continuously pressed into the impeller.
Visible, as long as the impeller continues to rotate, the liquid will continue to be inhaled and discharged.
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