Connecting structure of pump shaft of submersible pump for well
A technology of connection structure and submersible pump, which is applied to the components, pumps, and pump components of the pumping device for elastic fluids, and can solve the problems of difficult to guarantee the coaxiality, large tool wear, and stress concentration in the positioning grooves. Achieve the effect of large contact area, small wear and high stability
Inactive Publication Date: 2016-09-14
TAIZHOU JINBA IND TRADE
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Problems solved by technology
[0002] The submersible pump is a kind of water pump in which both the impeller of the pump body and the motor driving the impeller are submerged in the water. The motor shaft and the impeller shaft in the pump shaft of the existing deep well pump are connected separately through matching splines. This arrangement has The splined pump shaft has the following disadvantages during use: on the one hand, since the spline on the pump shaft is provided with a groove at the beginning, the positioning groove is prone to stress concentration during operation, which eventually leads to shaft fracture; on the other hand On the one hand, the structure of the spline groove is complicated, the processing is time-consuming and laborious, and the tool wear is large, the manufacturing cost is high, and the coaxiality is difficult to guarantee
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[0013] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0014] Such as figure 1 As shown, the connection structure of the pump shaft of the submersible pump used in this well includes a motor shaft 1 and an impeller shaft 2. The motor shaft 1 and the impeller shaft 2 are connected by a coupling 3. The end of the motor shaft 1 has an integrated The flat square connector 4, the cross section of the impeller shaft 2 is a regular hexagon, one end of the coupling 3 is provided with a flat square groove 5 for the connector 4 to fit in, and the other end is provided with a power supply shaft 1 to cooperate with the extension. The regular hexagonal hole 6 that enters, the regular hexagonal hole 6 communicates with the flat square groove 5.
[0015] In further detail, the motor shaft 1...
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The invention provides a connecting structure of a pump shaft of a submersible pump for a well, and belongs to the technical field of machines. The connecting structure solves the problem that an existing pump shaft of a submersible pump for a well is connected through a spline, and abrasion is likely to occur. The connecting structure of the pump shaft of the submersible pump for the well comprises a motor shaft and an impeller shaft. The motor shaft and the impeller shaft are connected through a coupler, a flat-square connector integrated with the motor shaft is arranged at the end of the motor shaft, the cross section of the impeller shaft is in a regular hexagon shape, a flat-square groove for the connector to be clamped in a matched mode is formed in one end of the coupler, a regular hexagon hole for the motor shaft to stretch in in a matched mode is formed in the other end of the coupler, and the regular hexagon hole is communicated with the flat-square groove. The connecting structure has the advantages of being stable in rotation and long in service life.
Description
technical field [0001] The invention belongs to the technical field of machinery, and relates to a submersible pump for wells, in particular to a connection structure for pump shafts of the submersible pump for wells. Background technique [0002] The submersible pump is a kind of water pump in which both the impeller of the pump body and the motor driving the impeller are submerged in the water. The motor shaft and the impeller shaft in the pump shaft of the existing deep well pump are connected separately through matching splines. This arrangement has The splined pump shaft has the following disadvantages during use: on the one hand, since the spline on the pump shaft is provided with a groove at the beginning, the positioning groove is prone to stress concentration during operation, which eventually leads to shaft fracture; on the other hand On the one hand, the structure of the spline groove is complicated, the processing is time-consuming and laborious, and the tool wea...
Claims
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IPC IPC(8): F04D29/044F04D29/043
CPCF04D29/043F04D29/044
Inventor 林利兵
Owner TAIZHOU JINBA IND TRADE