The working principle of centrifugal pump:
(1) The impeller is rotated by the pump shaft to work on the fluid between the blades. The fluid is subjected to centrifugal action and is thrown to the periphery by the center of the impeller. When the fluid reaches the periphery of the impeller, the flow rate is very high.
(2) The pump casing collects the liquid that is thrown from between the blades, and the liquid flows in the casing in the direction in which the volute-shaped passage is gradually enlarged, so that the kinetic energy of the fluid is converted into static pressure energy, and the energy loss is reduced. Therefore, the function of the pump casing is not only to collect liquid, but also an energy conversion device.
(3) Principle of liquid suction: By rotating the impeller at a high speed, the liquid in the center of the impeller is forced to be thrown away at a high speed, so that a low pressure is formed at the center of the impeller, and the liquid in the lower tank is continuously sucked up.
Centrifugation is actually the expression of the inertia of an object, such as water droplets on an umbrella. When the umbrella rotates slowly, the water droplets will follow the umbrella. This is because the friction between the umbrella and the water droplets acts as a centripetal force for the water droplets.
But if the umbrella rotates faster, this friction is not enough to make the water droplets move in a circular motion, then the water droplets will move away from the outer edge of the umbrella, just like pulling a stone with a rope to make a circular motion. If the speed is too fast, the rope will Disconnected, the stones will fly out. This is called centrifugation.
