Water for the compound movement in the impeller, namely on the one hand, submersible pump to work along the blade facing swimming, on the other hand also follow to adjust rotating impeller. Before a movement known as the relative motion, the velocity is called circular motion, the velocity is called peripheral speed, expressed as u. The synthesis of two kinds of sports, is the absolute motion of water inside the pump, the velocity V.
Impeller at work, it is a constant rotation of the fan, its work principle is like our home use inside the working principle of the electric fan is the same. Electric fan is a kind of perpetual motion machine, a device is to convert electrical energy into kinetic energy. Work is also converts electrical energy into kinetic energy of the impeller. Only use in the pump impeller mechanical equipment, is achieved through constantly sports a pumping function. Water pump in the life also is a very common mechanical equipment people are using the water pump is mainly the water out of the water in the river.
Its radius in office a little liquid motion state can be covered by the size of the above three speed and direction, composed of the three speed graphic called velocity triangle.
Is the main performance parameters of the pump: head, refers to the unit weight of liquid after pump, the energy gained by the head and total head, total head, or the total head, with H said that the unit is meters.
Traffic, refers to the water pump for the liquid quantity per unit time, using qq, said the unit is m 3 / or l/s.
Revolution, namely the water pump in the first minutes of revolution, with n, said unit for revolutions per minute.
Shaft power, that is, by the power of the prime mover to the water pump on the pump shaft with N, said unit for kw or horsepower.
Efficiency, the shaft power cable conveyor not all being used by the pump, which are part of the lost.
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