Sewage pump

1. Field of the Invention

The present invention relates to a sewage pump, and more particularly to a sewage pump that has a shaft with an upward rotor penetrating a dividing ring base on a top end of a combination housing to integrate with a centrifugal switch and has two supporting elements respectively attached to two opposite sides inside the dividing ring base to support a start capacitor and a rung capacitor therebetween so that each element has optimum orientation and arrangement.

2. Description of Related Art

A conventional sewage pump in accordance with the prior art, as shown in FIG. 1, its combination comprises a pump housing 10 having rotor at center and a cylindrical stator surrounding around the rotor (not shown). One end of the pump housing 10 combines with a dividing ring base 20 to assemble a start capacitor 30 and a run capacitor 40 thereon. Moreover, upper and lower ends are further combined with relative accessories to achieve the sewage pump combination to provide power for treating sewage. After, the conventional sewage pump has some drawbacks needed to be resolved such as the start capacitor 30 is easily burned and has short lifespan because it is suspended in ON operation.

One main objective of the present invention is to provide a sewage pump that has a shaft with an upward rotor penetrating a dividing ring base at a top end of the combination housing to integrate with a centrifugal switch.

Another main objective of the present invention is to provide a sewage pump that further has two supporting elements respectively attached to two opposite sides within the dividing ring base to support a start capacitor and a run capacitor therebetween so that each element in the sewage pump has optimum orientation and arrangement.

To achieve the foregoing objectives, the sewage pump comprises a pump housing, a central rotor and a surrounding stator accommodated in the pump housing, a dividing ring base attached to one end of the pump housing to combine with a start capacitor and a run capacitor;

improvements of the sewage pump comprise:

the central rotor faces upward and has a shaft penetrating the dividing ring base to integrate with a centrifugal switch;

two supporting elements are attached two sides of the dividing ring base respectively to support the start capacitor and the run capacitor so that each element in the sewage pump has optimum orientation and arrangement.

Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.

A sewage pump in accordance with the present invention comprises a shaft with an upward rotor penetrating a dividing ring base at a top end of the combination housing to integrate with a centrifugal switch. Two opposite sides inside the dividing ring base have two supporting elements respectively to make a start capacitor and a run capacitor been secured thereon between the two supporting elements so that each element within the dividing ring base has optimum orientation and arrangement.

With reference to FIGS. 2 and 3, a preferred first embodiment of a sewage pump comprises a pump housing 11, a central rotor 12 and a surrounding stator 13 mounted inside the pump housing, a dividing ring base 14 attached to one end of the pump housing 11, a centrifugal switch 3 with a start capacitor to operationally cut off the power supply, a top abutting plate 15 covering the centrifugal switch 3, and two covers 16 respectively attached to upper and lower ends of the pump housing 11 to achieve the sewage pump combination 1.

When the foregoing-mentioned elements are assembled (as shown in FIGS. 2 to 4), the central rotor 12 and the surrounding stator 13 are accommodated inside the pump housing 11. One end of the pump housing 11 is to combine with a dividing ring base 14. The rotor 12 has a shaft 121 penetrating a through hole 141 within the dividing ring base 14 (as shown in FIG. 4) to cooperate with a centrifugal switch 3 sleeving and secured at a top of the shaft 121 by a cushion 31 and threads 32 to combine together (as shown FIG. 2). A top surface of the centrifugal switch 3 is attached to a top abutting plate 15 rested on multiple dividing frames 142 on the dividing ring base 14 and positioning by threads (as shown in FIG. 2). Two supporting elements 143 are formed on the dividing ring base 14 respectively at two opposite sides on the same surface with the dividing frames 142. Two sleeving elements 144 are mounted on the two supporting elements 143 respectively. Each sleeving element is a loop to hold the start capacitor 21 or the run capacitor 22 on the corresponding supporting element 143 so that the capacitors 21, 22 are arranged between the two supporting elements 143 (as shown in FIG. 5) to complete the sewage pump combination 1. Thereby, each element in the sewage pump combination 1 has optimum orientation and arrangement.

Although this invention has been described in its preferred form with a certain degree of particularity, it is understood that the present invention of the preferred form has been made only by way of example and that numerous changes in the details of construction and the combination and arrangement of parts any be resorted to without departing from the spirit and scope of the invention.