JP3889593B2 - Booster pump and its use - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a booster pump using a DC brushless motor and a method for using the same.
[0002]
[Prior art and its problems]
The DC blanchless 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 large number of silicon steel plates punched in an annular shape and is fitted to a steel motor shaft 105 so that the outer circumferential surface of the laminated iron core 110 is circumferential. A plurality of rod-shaped magnets 111 are arranged in parallel at regular intervals. Therefore, booster pumps using DC blanchi-less motors are also considerably large in both diameter and weight. For example, when using multiple pumps directly connected for long-distance pumping or high-lift drainage, or during emergency drainage In order to carry easily, further reduction in size and weight is desired.
[0003]
Further, the inner diameter of the suction port and the inner diameter of the discharge port in the booster pump are made the same diameter, and the flange surface is formed flat. Then, as shown in FIG. 7, when the pump discharge port 122 of one booster pump and the pump suction port 120 of another booster pump are abutted to connect the flanges 128 and 128 with a fastener, It is inevitable that a slight lateral shift occurs on the mating surface. To cause the reduction and damage pump components such as pump performance by generation of a flow of wastewater and pumping is collision inhibited abnormal wear and cavitation phenomena in the pump operation when the lateral deviation is in the flange abutment surface as this Become.
[0004]
OBJECT OF THE INVENTION
An object of the present invention is a booster that is configured to be smaller and lighter than conventional ones, and is convenient for carrying around during emergency drainage, and also suitable for directly connecting a plurality of pumps for long-distance pumping and high-lift drainage It is to provide a pump and its use.
[0005]
[Structure of the invention]
In the booster pump using the DC blanchiless motor according to the present invention, bearing brackets having bearings in the center are respectively provided from both ends of the motor frame surrounding the outer peripheral surface of the stator, and the aluminum alloy motor shaft The end of the motor side is supported by the bearing of the motor side bearing bracket, the load side lead-out part of the aluminum alloy motor shaft is pivotally supported by the bearing of the load side bearing bracket, and the outer periphery of the motor shaft at the part facing the inner peripheral surface of the stator A magnetic cylinder is fitted to the surface, and a rotor is configured by fixing in a manner in which a plurality of magnet plates are arranged in parallel at regular intervals along the circumferential direction on the outer circumferential surface of the magnetic cylinder, and the pump suction is in the center. The load-side lead-out part of the motor shaft is extended to the inside of the suction cover having a port, and an impeller is attached to the extension part, and the motor-side end of the motor shaft is installed. The discharge cover with the pump discharge opening in the center is attached to the upper Symbol suction cover and the back to back shape: In this, the pump suction port by Nyo設the outer cylinder so as to form an annular water passage on the outer periphery of the motor frame and the pump discharge port Are connected by an annular water channel, and the end faces of the pump discharge port of one pump and the pump suction port of another pump are directly opposed to each other in a plurality of the above-described pumps. The tip inner diameter of the pump suction port is slightly larger than the inner diameter of the tip of the pump discharge port so that the drainage / pumping flow does not hinder the collision even if some lateral displacement occurs on the surface. The outer peripheral edge of the pump suction port and the outer peripheral edge of the pump discharge port were formed on the flange joint edge having the same diameter. Examples of its use, by using the pump of the above structure as a plurality of booster pumps, to abut a pump inlet in the pump discharge port and the other booster pump in one of the booster pump to the opposite shape, both The flange joint edges are fastened with a one-touch clamper and arranged in series.
[0006]
【Example】
The embodiment will be described below with reference to FIGS.
[0007]
In FIG. 1, reference numeral 1 denotes a motor frame surrounding the outer periphery of the stator 2, 3 denotes a driving side bearing bracket provided at one end of the motor frame 1, and 4 denotes a load side bearing bracket provided at the other end of the motor frame 1. A shaft hole 6 through which a load side lead-out portion 5b of the motor shaft 5 which will be described later passes is formed in the central portion. Reference numeral 7 denotes a bearing mounted at the center of the inner surface of the driving side bearing bracket 3, and reference numeral 8 denotes a bearing mounted on the periphery of the shaft hole 6 on the inner surface of the load side bearing bracket 4. The upper SL motor shaft 5 is made of aluminum alloy, the driving-side end 5a are pivotally supported by the bearing 7 of the drive side bearing bracket 3, the load-side emission part 5b is pivotally supported by a bearing 8 on the load side bearing bracket 4 And extends through the shaft hole 6 into the suction cover 9 described later. The outer peripheral surface of the aluminum alloy motor shaft 5 at the portion facing the inner peripheral surface of the stator 2 is formed to have 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 transverse 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. In FIG. 1 again, reference numeral 9 denotes a suction cover having a pump suction port 20 in the center, and the load side lead-out portion 5b of the motor shaft 5 is extended into the suction cover 9, and an impeller 18 is attached to the extended portion. To do. 12 is a discharge cover having a pump discharge port in the center, is attached to the upper Symbol suction cover 9 and turned away form the outer side of the driving side end portion 5a of the motor shaft 5. 26 is a Nyo設has an outer cylinder so as to form an annular water passage 27 to the outer periphery of the motor frame 1 will be conducted by an annular waterway 2 7 the pump inlet 20 and a pump discharge port 22. 4 and FIG. 5, when the end faces of the pump discharge port 22 of one booster pump and the pump suction port 20 of another booster pump are abutted and directly coupled to each other, The tip inner diameter Φ1 of the pump suction port 20 is formed to be slightly larger than the inner diameter Φ2 of the pump discharge port 22 so that the flow of the drainage / pumping water does not hinder the collision even if some lateral displacement occurs. At the same time, the outer peripheral edge of the tip of the pump suction port 20 and the outer peripheral edge of the pump discharge port 22 are formed on the flange joint edge 28 having the same diameter.
[0008]
In addition, although the rotor part in the booster pump of the present invention is made extremely lightweight by the above-described configuration, other parts such as the motor frame 1, the driving side bearing bracket 3, the load side bearing bracket 4, the suction cover 9, the discharge For manufacturing the cover 12, the impeller 18 and the like, it is desirable to select a light and strong material such as an aluminum alloy.
[0009]
【how to use】
The present invention booster pump having the structure before mentioned, this a a can of course be used alone, respectively entered into the hose coupling 29 to the tip edge portion of the case the pump inlet 20 and the pump discharge port 22 Alternatively, a strainer stand is attached to the pump suction port 20 and a hose coupling 29 is fastened to the front end edge of the pump discharge port 22. Reference numeral 21 denotes a ferrule-type one-touch clamper.
[0010]
However, as shown in FIG. 4 or FIG. 5, the booster pump according to the present invention, which is configured to be ultralight, is most effective when the pump discharge port 22 in one booster pump and the pump suction port 20 in another booster pump are provided. In this case, the two flange joint edges 28 and 28 are fastened together with a one-touch clamper 21 and used in a plurality of units arranged in series. In the embodiment of FIG. 4, power is demonstrated for long-distance pumping, and in the embodiment of FIG. 5, power is demonstrated for high-lift drainage.
[0011]
Since the tip inner diameter Φ1 of the pump suction port 20 is larger than the tip inner diameter Φ2 of the pump discharge port 22 as described above, when the plurality of units are arranged in series, there is a slight lateral shift on the flange abutting surface. even yielded, no flow of wastewater and pumping is collision inhibited during pump operation.
[0012]
【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 at the time of emergency drainage. However, there is an advantage that the workability of the construction is excellent because a simple ferrule-type one-touch clamper is sufficient, without the need for complicated work with conventional large flanges and bolts and nuts. Since the load applied to the discharge conduit and connection is small, it is easy to use multiple units connected in series, and in that case the flow of drainage / pumping water even if some lateral displacement occurs on the flange abutting surface in Yo but a dimensioned so as not to collide inhibit, since the inner diameter of tip portion of the pump suction port is formed in a slightly larger diameter than the inner diameter of tip portion of the pump discharge port, a conventional pump suction port and port as Pump the occurrence of up discharge port of the inner diameter may flow and drainage and pumping is collision inhibited abnormal wear and cavitation phenomena in the pump operation even resulted in slight lateral shift in the flange abutment surface unlike the same diameter It is extremely effective for long-distance pumping and high-lift drainage without degrading performance and damaging pump parts.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view of a booster pump according to the present invention.
FIG. 2 is a longitudinal side view of a main part of a motor shaft in a booster pump according to the present invention.
3 is a cross-sectional view taken along line AA in FIG.
FIG. 4 is an explanatory diagram of a use state in which a plurality of booster pumps of the present invention are arranged in series, and shows an example for long-distance pumping.
FIG. 5 is an explanatory diagram of a use state in which a plurality of booster pumps of the present invention are arranged in series, and shows an example for high head drainage.
FIG. 6 is a longitudinal sectional side view of a main part of a rotor in a conventional DC brushless motor.
FIG. 7 is a longitudinal sectional side view of a main part showing a lateral displacement state of a flange abutment in a booster pump in which the inner diameter of the suction port and the inner diameter of the discharge port are made the same diameter.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Motor frame 2 Stator 3 Drive side bearing bracket 4 Load side bearing bracket 5 Aluminum alloy motor shaft 5a Drive side end 5b Load side lead-out part 7 Drive side bearing 8 Load side bearing 9 Suction cover 10 Magnetic cylinder 11 Magnet plate 12 tip inner diameter of the discharge cover 18 impeller 20 pump suction port 21 one-touch clamper 22 pump discharge port 26 outer barrel 27 ring Josui path 28 flange joint edges Φ1 pump suction port of the tip inner diameter Φ2 pump discharge port

Claims (2)

From both ends of the motor frame that surrounds the outer peripheral surface of the stator, bearing brackets having bearings in the center are respectively installed, 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 motor shaft made of the 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 rotor is constructed 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 extended to the inside of the suction cover having a pump suction port in the center. and an impeller mounted on conductor extending portion, the upper Symbol suction cover discharge cover with the pump discharge opening in the center at the outside of the driving-side end of the motor shaft and facing away Attached to, and Nyo設the outer cylinder to form an annular water passage on the outer periphery of the motor frame and a pump inlet and a pump discharge port into conduction by the annular water passage, and, one of the pump in a plurality of the above embodiments the pump When the end faces of the pump discharge port and the pump suction port of another pump are directly connected to each other, the dimensions are such that the flow of drainage / pumped water does not hinder the collision even if some lateral displacement occurs on the contact surface. Therefore , the inner diameter of the tip of the pump suction port is slightly larger than the inner diameter of the tip of the pump discharge port, and the outer peripheral edge of the pump suction port and the outer peripheral edge of the pump discharge port have the same diameter. A booster pump using a DC brushless motor, characterized in that it is formed on a flange joint edge.   Using a plurality of booster pumps according to claim 1, the pump discharge port of one booster pump and the pump suction port of another booster pump are abutted against each other, and the flange joint edges of both are joined by a one-touch clamper. A method of using a booster pump using a DC brushless motor, wherein the booster pump is fastened and arranged in series.

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