JP4618906B2 - Pump device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pump device for high head drainage in which an exterior pump and an interior pump are connected.
[0002]
[Prior art and its problems]
The DC brushless motor is smaller and lighter than the AC induction motor. However, as shown in FIG. 6, the rotor structure has a laminated iron core 110 formed by laminating a plurality of annularly punched silicon steel plates, and is fitted to a steel motor shaft 105, and the circumferential surface of the laminated iron core 110 is circumferential. A plurality of bar magnets 111 are arranged in parallel at regular intervals along the direction. Therefore, a pump using a DC brushless motor is also considerably large in both diameter and weight. For example, when using a plurality of pumps directly connected for high-lift drainage, or for carrying out emergency drainage easily. Therefore, further reduction in size and weight is desired.
[0003]
OBJECT OF THE INVENTION
An object of the present invention is to provide a pump device that is more compact and lighter than conventional ones and is convenient for carrying around during emergency drainage, and that can be quickly adapted for high-lift drainage by directly connecting a plurality of pumps in a detachable manner. There is to do.
[0004]
[Structure of the invention]
In the pump device according to the present invention, bearing brackets having bearings in the center are respectively provided in opposite directions from both ends of the motor frame surrounding the outer peripheral surface of the stator, and the driving side end of the aluminum alloy motor shaft is connected to the driving side bearing bracket. The load side lead-out portion of the aluminum alloy motor shaft is pivotally supported by the bearing of the load side bearing bracket, and a magnetic cylinder is fitted to the outer peripheral surface of the motor shaft at a portion facing the inner peripheral surface of the stator, A rotor is formed by fixing a plurality of magnet plates in parallel with each other along the circumferential direction on the outer circumferential surface of the magnetic cylinder, and a pump suction port is provided at the center of the lower surface. A load-side lead-out part of the motor shaft is extended to the inside of the pump casing from which the discharge port is led out, and an impeller is attached to the extension part to constitute an external pump, Bearing brackets with bearings at the center of the motor frame that surround the outer peripheral surface of the motor are mounted oppositely, and the driving side end of the aluminum alloy motor shaft is supported by the bearing of the driving side bearing bracket. The load-side lead-out portion of the alloy motor shaft is pivotally supported by the bearing of the load-side bearing bracket, and a magnetic cylinder is fitted on the outer peripheral surface of the motor shaft at a portion facing the inner peripheral surface of the stator. The rotor is configured by fixing a plurality of magnet plates in parallel at regular intervals along the circumferential direction, and the load side lead-out portion of the motor shaft is guided into the suction cover having a pump suction port in the center. The impeller is attached to the extending portion, and the discharge cover having the pump discharge port in the center outside the driving side end portion of the motor shaft is connected to the suction cover. And an internal cylinder is constructed by connecting the pump suction port and the pump discharge port with the annular water channel so that an annular water channel is formed around the outer periphery of the motor frame. The outer peripheral edge of the outlet and the outer peripheral edge of the pump suction port of the internal pump are formed at the flange joint edge of the same diameter, and the pump discharge port of the external pump and the pump suction port of the internal pump are opposed to each other. The flange joint edges of both were fastened and detachable with a one-touch clamper.
[0005]
【Example】
The embodiment will be described below with reference to FIGS.
[0006]
1 and 5, A is an exterior pump in the pump device of the present invention. In FIG. 1, A1 is a motor frame surrounding the outer periphery of the stator A2, and A3 is a driving bearing bracket provided at one end of the motor frame A1. , A4 is a load side bearing bracket provided at the other end of the motor frame A1, and a shaft hole A6 through which a load side lead-out portion 5b of the motor shaft 5 described later passes is formed at the center. Reference numeral 7 denotes a bearing mounted at the center of the inner surface of the driving side bearing bracket A3, and reference numeral 8 denotes a bearing mounted on the periphery of the shaft hole A6 on the inner surface of the load side bearing bracket A4. The motor shaft 5 is made of an aluminum alloy, its driving side end portion 5a is pivotally supported by the bearing 7 of the driving side bearing bracket A3, and the load side lead-out portion 5b is pivotally supported by the bearing 8 of the load side bearing bracket A4. At the same time, it passes through the shaft hole A6 and is led into the suction pump casing A9 described later. The outer peripheral surface of the aluminum alloy motor shaft 5 at the portion facing the inner peripheral surface of the stator A2 is formed with a larger diameter than the driving side end portion 5a and the load side lead-out portion 5b, as shown in detail in FIG. A magnetic cylinder 10 is fitted to the outer peripheral surface large diameter portion. Reference numeral 11 denotes a strong magnetic thin magnet plate having a cross-sectional shape that is curved in an arc shape along the outer peripheral surface of the magnetic cylinder 10 as shown in FIG. A super lightweight rotor is formed by fixing a plurality of sheets in parallel with each other at regular intervals. Referring again to FIG. 1, A12 is a head cover that covers the upper end of the motor frame A1, and in the drawing of the embodiment, it is shown as being integrated with the driving side bracket A3. A9 is a pump casing having a pump suction port A20 at the center of the lower surface and a pump discharge port A22 led out on one side surface. An impeller A18 is mounted on the load side lead-out part 5b of the motor shaft 5 in the pump casing A9. The outer peripheral edge of the pump discharge port A22 is formed at the flange joint edge A28. A19 is a strainer that surrounds the outer periphery of the pump suction port A20, and A24 is a handle attached to the head cover A12.
[0007]
2 and 5, B is an internal pump in the pump device of the present invention. In FIG. 2, B1 is a motor frame that surrounds the outer periphery of the stator B2, and B3 is a driving-side bearing bracket provided at one end of the motor frame B1. , B4 is a load-side bearing bracket provided at the other end of the motor frame B1, and a shaft hole B6 through which a load-side lead-out portion 5b of the motor shaft 5 described later passes is formed in the center. Reference numeral 7 denotes a bearing attached to the center of the inner surface of the driving side bearing bracket B3, and reference numeral 8 denotes a bearing attached to the periphery of the shaft hole B6 on the inner surface of the load side bearing bracket B4. The motor shaft 5 is made of an aluminum alloy, its driving side end portion 5a is pivotally supported by the bearing 7 of the driving side bearing bracket B3, and the load side lead-out portion 5b is pivotally supported by the bearing 8 of the load side bearing bracket B4. At the same time, it extends through the shaft hole B6 and into the suction cover B9 described later. As shown in detail in FIG. 3, the outer peripheral surface of the aluminum alloy motor shaft 5 at the portion facing the inner peripheral surface of the stator B2 is formed with a larger diameter than the driving side end portion 5a and the load side lead-out portion 5b. In addition, a magnetic cylinder 10 is mounted on the outer peripheral large diameter portion. Reference numeral 11 denotes a thin magnet plate having a strong magnetic force, whose cross-sectional shape is curved in an arc shape along the outer peripheral surface of the magnetic cylinder 10 as shown in FIG. A super lightweight rotor is configured by fixing a plurality of sheets along a line at regular intervals along the line. In FIG. 2 again, B9 is a suction cover having a pump suction port B20 in the center, and the load-side lead-out portion 6b of the motor shaft 5 is extended into the suction cover 9, and an impeller B18 is attached to the extended portion. To do. B12 is a discharge cover having a pump discharge port B22 in the center, and is mounted on the outside of the driving side end portion 5a of the motor shaft 5 so as to face the suction cover B9. B26 is an outer trunk provided so as to form an annular water passage B27 on the outer periphery of the motor frame B1, and the pump suction port B20 and the pump discharge port B22 are electrically connected by the annular water passage B26. The outer peripheral edge of the pump suction port B20 is formed at the flange joint edge B28 having the same diameter as the outer peripheral edge of the pump discharge port A22 in the outer water channel type pump A. Reference numeral 21 denotes a ferrule-type one-touch clamper.
[0008]
Note that the rotor parts of the external pump A and the internal pump B are made extremely light by the above-described configuration, but other parts, for example, the motor frame A1, the driving side bearing bracket A3, the load in the external pump A, and the load Side bearing bracket A4, pump casing A9, head cover A12, impeller A18, motor frame B1 in the interior pump B, driving side bearing bracket B3, load side bearing bracket B4, suction cover B9, discharge cover 12, impeller B18, etc. For production, it is desirable to select a light and tough material such as an aluminum alloy.
[0009]
In use, as shown in FIG. 5, the pump discharge port A22 of the upright exterior pump A and the pump suction port B20 of the internal pump B lying on the side are brought into contact with each other, and the flange joint edges of both A28 and B28 are detachably fastened by the one-touch clamper 21.
[0010]
【The invention's effect】
According to the present invention, it is possible to reduce the size and weight by a unique rotor structure, and it is convenient for carrying around during emergency drainage, and the load applied to the connecting portion is small. Therefore, the conventional large flange and bolts and nuts are complicated. Since a simple ferrule-type one-touch clamper is sufficient without requiring work, it is excellent in turning workability, and it can be quickly adapted for high-lift drainage by detachably connecting an external pump and an internal pump. There is an advantage that you can.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view of an exterior pump in a pump device of the present invention.
FIG. 2 is a longitudinal side view of an internal pump in the pump device of the present invention.
FIG. 3 is a longitudinal side view of a main part of a motor shaft in the pump device of the present invention.
4 is a cross-sectional view taken along line XX in FIG.
FIG. 5 is a longitudinal side view of a main part of the pump device of the present invention.
FIG. 6 is a longitudinal sectional side view of a main part of a rotor in a conventional DC brushless motor.
[Explanation of symbols]
5 Aluminum alloy motor shaft 5a Driving side end 5b Load side lead-out part 7 Driving side bearing 8 Load side bearing 10 Magnetic cylinder 11 Magnet plate 21 One-touch clamper A Outer pump A1 Motor frame A2 Stator A3 Driving side bearing bracket A4 Load side bearing bracket A12 Head cover A18 Impeller A20 Pump suction port A22 Pump discharge port A28 Flange joint edge B Internal pump B1 Motor frame B2 Stator B3 Driving side bearing bracket B4 Load side bearing bracket B9 Suction cover B12 Discharge cover B18 Impeller B20 Pump inlet B22 Pump outlet B26 Outer trunk B27 Annular water channel B28 Flange joint edge

Claims (1)

From both ends of the motor frame surrounding the outer peripheral surface of the stator, bearing brackets having bearings in the center are respectively provided, and the driving end of the aluminum alloy motor shaft is supported by the bearing of the driving bearing bracket. The load-side lead-out portion of the motor shaft made of a motor is pivotally supported by the bearing of the load-side bearing bracket, and a magnetic cylinder is fitted to the outer peripheral surface of the motor shaft at a portion facing the inner peripheral surface of the stator. A pump casing in which a rotor is configured by fixing a plurality of magnet plates in parallel with each other along a circumferential direction, and a pump suction port is provided at the center of the lower surface and a pump discharge port is led out on one side surface. The motor shaft that surrounds the outer peripheral surface of the stator is constructed by extending the load side lead-out portion of the motor shaft to the inside and mounting the impeller on the extension portion to form an external pump Bearing brackets with bearings at the center of each side of the shaft are installed in opposite directions, and the drive side end of the aluminum alloy motor shaft is supported by the bearing of the drive side bearing bracket, and the load side of the aluminum alloy motor shaft The lead-out portion is pivotally supported by the bearing of the load side bearing bracket, and a magnetic cylinder is fitted to the outer peripheral surface of the motor shaft at a portion facing the inner peripheral surface of the stator, and along the circumferential direction of the outer peripheral surface of the magnetic cylinder A rotor is configured by fixing a plurality of magnet plates in parallel with each other at a constant interval, and the load-side lead-out portion of the motor shaft is extended to the inside of a suction cover having a pump suction port in the center. Attach an impeller to the motor shaft, and attach a discharge cover that has a pump discharge port in the center outward from the motor side end of the motor shaft. The outer cylinder is installed so that an annular water channel is formed in the pump, and the pump suction port and the pump discharge port are connected by the annular water channel to form an internal pump. The outer peripheral edge of the pump suction port of the pump is formed at the flange joint edge of the same diameter, the pump discharge port of the external pump and the pump suction port of the internal pump are abutted against each other, and both flange joint edges A pump device characterized in that they are detachably fastened with a one-touch clamper.

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