A submersible electric pump with adjustable blades

Abstract

The invention discloses a submersible electric pump with adjustable blades, which includes a pump casing fixed in a drainage pipeline. In the pump casing, a water inlet horn, an impeller chamber, a water outlet guide vane body and a motor chamber are sequentially arranged along the fluid flow direction. The horn is connected to the water inlet pipeline, and the motor room is connected to the water outlet pipeline. The motor in the motor room drives the impeller hub in the impeller room to rotate through the motor shaft; the impeller hub is provided with blades that can rotate relative to the impeller hub to change the deflection angle. An adjustment chamber for accommodating the adjustment connecting rod, a drive chamber and a power chamber for providing power to the hydraulic motor are sequentially arranged in the axial direction. The invention realizes the adjustment of the deflection angle of the blade without stopping the machine during the working process; since the stator is fixed on the pump casing, the circuit for supplying power to the stator is located outside the hub of the impeller and is independently separated from the hub of the impeller, and there is no Any circuit rotates accordingly, and the working process is stable and safe, and there is no need to worry about the entanglement and interference of the circuit.

Description

technical field [0001] The invention relates to the field of water conservancy transportation, in particular to a submersible electric pump with adjustable blades. Background technique [0002] Submersible electric pump refers to a kind of water pump in which both the impeller of the pump body and the motor driving the impeller are submerged in water, and it is widely used in the field of water conservancy transportation. [0003] In many drainage sites, due to large changes in water level, it is necessary to adjust the deflection angle of the blades to meet the flow and head requirements of different working conditions, so that the efficiency of the pump is at a better working condition point. The current submersible pumps cannot adjust the deflection angle of the blade without stopping the machine, and often need to stop the machine to adjust the deflection angle of the blade, which greatly affects the drainage efficiency; if the circuit is used to control the deflection o...

AI Technical Summary

Problems solved by technology

The current submersible pumps cannot adjust the deflection angle of the blade without stopping the machine, and often need to stop the machine to adjust the deflection angle of the blade, which greatly affects the drainage efficiency; if the circuit is used to control the deflection of the blade, during the rotation of the impeller hub, too many lines It may be entangled and interfered, which is very dangerous, so it needs to be solved urgently

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