A pump is a machine that converts the mechanical energy of a prime mover into liquid energy. The pump is used to increase the potential energy, pressure energy and kinetic energy (high speed liquid flow)
The prime mover drives the impeller to rotate through the pump shaft, and works on the liquid to increase its energy. Thus, the required amount of liquid is delivered to the required height or pressure place by the suction tank through the overflow part of the pump.
The prime mover drives the impeller to rotate, sucks the water into the pump from a and discharges it to B. the leading role of the pump is that the blades in the impeller force the liquid to rotate, and the liquid is thrown out to all sides under the centrifugal force
This situation is the same as the reason that the water drops on the rotating umbrella are thrown out to all sides. After the liquid in the pump is thrown out, the new liquid enters the pump under the atmospheric pressure, thus continuously supplying water from point a to point B.
Before the pump is started, it should be filled with water first. If it is not filled with water, the impeller can only drive the air to rotate. Because the mass of air per unit volume is very small, the centrifugal force generated is very small, and it is unable to discharge the air in the pump and the drainage pipeline,
If a certain vacuum cannot be created in the pump, the water will not be drawn up. The bottom valve of the pump is used for water filling, and the regulating valve at the outlet side of the pump is used to regulate the flow.
Dry Type Oilless Vacuum Pumps
Liquid Ring Vacuum compressor
Water ring vacuum pump
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