Energy-saving environment-friendly multiple-stage centrifugal pump

Abstract

The invention relates to an energy-saving environment-friendly multiple-stage centrifugal pump. The energy-saving environment-friendly multiple-stage centrifugal pump comprises a rack, a pump body, amotor and a water pipe. A first turbine is connected into the water pipe in a rotary manner. A first cam is connected to the water pipe in a rotary manner. The first turbine is coaxially connected with the first cam. The rack is provided with an inflator. A piston is connected into the inflator in a sliding manner and provided with a ventilating hole. A seal plate is hinged to the portion, at theposition of the ventilating hole, of the piston. A piston rod is fixed to the piston. The first cam abuts against the piston rod. The inflator communicates with an air bag. An air jetting pipe is arranged at the position, at one side of the motor, on the rack, wherein air is jetted to the motor through the air jetting pipe. A communicating pipe is arranged between the air bag and the air jetting pipe in a communicating manner and provided with a valve. The rack is further provided with a switching-on / off mechanism used for switching on and switching off the valve. Compared with the prior art,according to the energy-saving environment-friendly multiple-stage centrifugal pump, water in the water pipe flows to drive the inflator to inflate the air bag, the valve is switched on and switched off intermittently through the switching-on / off mechanism, and the good motor heat dissipation effect is achieved; electric energy does not need to be consumed; and the energy conservation and environment protection purposes are achieved.

Description

technical field [0001] The invention relates to the field of centrifugal pump equipment, in particular to an energy-saving and environment-friendly multistage centrifugal pump. Background technique [0002] Existing multi-stage centrifugal pumps are mainly composed of a motor, a pump body, a guide casing and a multi-stage impeller installed on the shaft of the motor. When working, the motor drives the multi-stage impeller to rotate at high speed, and the liquid filled in the first-stage impeller receives the action of the blade of the first-stage impeller, so that the pressure and speed increase at the same time, and is led to the next-stage through the flow channel of the diversion shell. The impeller, in this way, flows through all the impellers and the guide shell one by one, further increasing the pressure energy of the liquid. When the liquid flows out from the outlet of the pump body, a vacuum or low pressure is formed at the inlet of the impeller due to the discharge ...

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Problems solved by technology

[0003] When the motor drives the multi-stage blades to rotate at high speed, the motor will generate a lot of heat. During the operation of the motor, it is often necessary to dissipate heat for the motor. In the prior art, an air cooler is generally installed next to the motor to start the fan. The cooling machine blows the air to dissipate heat from the motor to achieve the purpose of cooling the motor; however, during the period when the air cooler is used to dissipate heat from the motor, the air cooler needs to be powered on to drive, and when cooling the motor, it will consume a lot of electric energy, which is relatively wasting energy

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