Submersible wet-type full tubular pump with shaftless structure

Abstract

The invention discloses a submersible wet-type full tubular pump with a shaftless structure. A motor cavity is formed in the surface of a guide vane body and the outer surface of a water absorption chamber; a rotor iron core is arranged in the motor cavity and located between the guide vane body and the water absorption chamber; a stator iron core is arranged at the outer side of the rotor iron core and located in the motor cavity; windings are arranged at two sides of the stator iron core and located in the motor cavity; a hub is mounted between the water absorption chamber and the middle of the guide vane body; a plurality of vanes are fixedly connected to the surface of the hub, the inner diameters of the vanes are fixedly connected to the surface of the hub, and the outer diameters of the vanes are welded and fixed to the inner circle of the rotor iron core; and bearings and mechanical seals are arranged between the inner walls of the two ends of the hub and the water absorption chamber and between the inner walls of the two ends of the hub and the guide vane body, and the bearings and the mechanical seals are arranged on the water absorption chamber and the guide vane body. The influence of the inner diameters of the blades on bearing model selection is reduced, the special structure that the shaft is static is fully utilized, a traditional motor shaft is removed, and the bearings and the mechanical seals are arranged on the static water absorption chamber and the guide vane body, so that mounting is convenient, the space is saved, and the shaft machining cost is reduced.

Description

technical field [0001] The invention relates to the technical field of a submersible wet full-through flow pump, in particular to a submersible wet full-through flow pump with a shaftless structure and a diameter not greater than 1m. Background technique [0002] The inner diameter and outer diameter of the submersible wet full-through flow pump blades are determined by the flow head, and the bearing type is determined by the water thrust. However, the submersible wet full-through-flow pump blades are located outside the hub, and the bearing is located inside the hub. The selection of the bearing type is not only affected by the water thrust. The impact is also affected by the space limitation of the inner diameter of the blade (by the flow head), which leads to the fact that the bearings of some models of small-caliber wet full-through flow pumps cannot meet the required force requirements, reduce the life of the bearings, and the bearings are vulnerable. [0003] During th...

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Problems solved by technology

[0002] The inner diameter and outer diameter of the submersible wet full-through flow pump blades are determined by the flow head, and the bearing type is determined by the water thrust. However, the submersible wet full-through-flow pump blades are located outside the hub, and the bearing is located inside the hub. The selection of the bearing type is not only affected by the water thrust. It is also affected by the space limitation of the inner diameter of the blade (by the flow head), which leads to the bearings of some models of small-diameter wet full-through flow pumps not meeting the required force requirements, reducing the life of the bearings, and the bearings are vulnerable

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