CN218325336U - Water-cooling disc type rare earth permanent magnet motor driven centrifugal pump unit - Google Patents
Water-cooling disc type rare earth permanent magnet motor driven centrifugal pump unit Download PDFInfo
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- CN218325336U CN218325336U CN202223022846.4U CN202223022846U CN218325336U CN 218325336 U CN218325336 U CN 218325336U CN 202223022846 U CN202223022846 U CN 202223022846U CN 218325336 U CN218325336 U CN 218325336U
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Abstract
The application discloses a centrifugal pump unit driven by a water-cooled disc type rare earth permanent magnet motor, which comprises a pump shell, an impeller, a motor, a water-cooled structure and a mechanical seal, wherein the pump shell is provided with a water inlet and a water outlet; an impeller is arranged in the pump shell, a liquid outlet is arranged on the side wall of the pump shell, and a liquid inlet is arranged at the bottom of the pump shell; the motor is arranged at the top of the pump shell, the motor is a disc type rare earth permanent magnet motor, and a water cooling structure is arranged on the motor; the lower end of the driving shaft of the motor penetrates through the shaft hole at the top of the pump shell and then is connected with the rotating shaft of the impeller, and a mechanical seal is arranged between the driving shaft and the shaft hole. The motor that this application adopted is small, and thickness is thinner, and motor and centrifugal pump unit have adopted coaxial mounting means simultaneously for this centrifugal pump unit has further reduced the size, thereby satisfies less installation space's user demand. The motor can be cooled through the water cooling structure, and then the working efficiency of the centrifugal pump unit is improved. The problem that centrifugal pump unit exists bulky and the heat dissipation is poor among the prior art has been solved in this application.
Description
Technical Field
The application belongs to the technical field of non-variable volume pumps, and particularly relates to a centrifugal pump unit driven by a water-cooled disc type rare earth permanent magnet motor.
Background
Centrifugal pump assemblies operate by causing water to undergo centrifugal motion by the rotation of an impeller. Before the water pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to rotate at a high speed, the water is thrown to the outer edge of the impeller in a centrifugal motion, and flows into a water pressure pipeline of the water pump through a flow channel of the volute-shaped pump shell. The existing centrifugal pump unit is large in size generally, so that more installation space is needed, a use scene is limited to a certain extent, meanwhile, a motor arranged in the centrifugal pump unit generates large heat, and the working efficiency of the centrifugal pump unit is reduced.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a water-cooling disk type rare earth permanent magnet motor driven centrifugal pump unit, and solves the problems of large size and poor heat dissipation of the centrifugal pump unit in the prior art.
In order to achieve the above object, an embodiment of the present invention provides a centrifugal pump unit driven by a water-cooled disc-type rare earth permanent magnet motor, including a pump case, an impeller, a motor, a water-cooled structure, and a mechanical seal;
the impeller is arranged in the pump shell, a liquid outlet is formed in the side wall of the pump shell, and a liquid inlet is formed in the bottom of the pump shell;
the motor is arranged at the top of the pump shell, the motor is a disc type rare earth permanent magnet motor, and the water cooling structure is arranged on the motor;
the lower end of a driving shaft of the motor penetrates through a shaft hole in the top of the pump shell and then is connected with a rotating shaft of the impeller, and the mechanical seal is arranged between the driving shaft and the shaft hole.
In one possible implementation, a water lubricated bearing is provided between the mechanical seal and the shaft bore.
In one possible implementation, the water cooling structure includes a water cooling jacket;
the water cooling sleeve is sleeved outside the motor, a sealing layer is sleeved on the outer wall of the motor, and a water cooling cavity is formed between the water cooling sleeve and the sealing layer;
the side wall of the water cooling jacket is provided with a cooling water outlet and a cooling water inlet; the water cooling jacket is fixedly connected with the pump shell.
In one possible implementation, the motor includes a stator, the drive shaft, and a rotor;
the rotor comprises a shaft sleeve and magnetic steel arranged in the circumferential direction of the shaft sleeve, the shaft sleeve is sleeved on the driving shaft, and the stator is sleeved on the magnetic steel;
the sealing layer is sleeved on the outer wall of the stator, and the water cooling sleeve is sleeved outside the stator.
In one possible implementation, the sealing layer is a metal thin layer wrapped on the coils of the stator.
In a possible implementation manner, the motor further comprises a bearing seat arranged at the upper part of the motor, wherein the bearing seat comprises a shell, a positioning bearing and an end cover;
the shell is arranged at the upper part of the water cooling jacket, the positioning bearing is arranged in the shell, and the end cover is arranged at the top of the shell;
the upper end of the driving shaft sequentially penetrates through the water cooling sleeve and the bottom wall of the shell and then is installed in the bearing.
The embodiment of the utility model provides an in the one or more technical scheme that provide, have following technological effect or advantage at least:
the embodiment of the utility model provides a water-cooling disk tombarthite permanent-magnet machine driven centrifugal pump unit, the motor that this centrifugal pump unit adopted is small, and thickness is thinner, and motor and centrifugal pump unit have adopted coaxial mounting means simultaneously for this centrifugal pump unit has further reduced the size, and has less weight, thereby satisfies less installation space's user demand. The motor can be cooled through the water cooling structure, so that the problem of poor heat dissipation is solved, and the working efficiency of the centrifugal pump unit is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some of the embodiments described in the present application, and that other drawings can be derived from these drawings by a person skilled in the art without inventive effort.
Fig. 1 is the embodiment of the utility model provides a water-cooling disk type rare earth permanent magnet motor driven centrifugal pump unit's schematic structure diagram.
Reference numerals: 1-a pump casing; 2-an impeller; 3, a motor; 31-a stator; 32-a drive shaft; 33-a rotor; 331-a shaft sleeve; 332-magnetic steel; 34-a terminal post; 4-a water-cooling structure; 41-water cooling jacket; 42-a water-cooling cavity; 43-cooling water outlet; 44-cooling water inlet; 5, mechanical sealing; 6-water lubrication of the bearings; 7-a sealing layer; 8-bearing seats; 81-a housing; 82-positioning the bearing; 83-end cap.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1, the embodiment of the present invention provides a centrifugal pump unit driven by a water-cooled disc-type rare earth permanent magnet motor, which includes a pump case 1, an impeller 2, a mechanical seal 5, a motor 3, and a water-cooled structure 4.
An impeller 2 is arranged in the pump case 1, a liquid outlet is arranged on the side wall of the pump case 1, and a liquid inlet is arranged at the bottom of the pump case 1.
The motor 3 is arranged at the top of the pump shell 1, the motor 3 is a disc type rare earth permanent magnet motor, and a water cooling structure 4 is arranged on the motor 3.
The lower end of a driving shaft 32 of the motor 3 passes through a shaft hole at the top of the pump shell 1 and then is connected with a rotating shaft of the impeller 2, and a mechanical seal 5 is arranged between the driving shaft 32 and the shaft hole.
It should be noted that the circulating cooling water for the water cooling structure 4 can be provided by the pump itself or by an external water source.
The disc type rare earth permanent magnet motor is small in size and thin in thickness, and meanwhile the motor 3 and the centrifugal pump unit adopt a coaxial mounting mode, so that the size of the centrifugal pump unit is further reduced, the centrifugal pump unit has smaller weight, and the use requirement of a smaller mounting space is met. The motor 3 can be cooled by the water cooling structure 4, so that the problem of poor heat dissipation is solved, and the working efficiency of the centrifugal pump unit is improved.
In this embodiment, a water lubricated bearing 6 is provided between the mechanical seal 5 and the shaft hole.
The water lubricated bearing 6 is a radial bearing, and the water lubricated bearing 6 is used to reduce the frictional force. The mechanical seal 5 is positioned on the inner side of the water lubrication bearing 6, and the water lubrication bearing share a cavity, so that the axial size of the unit is reduced to the maximum extent.
The shaft seal flushing mode can adopt different schemes according to the type of media, and the mechanical seal flushing liquid can lubricate the water lubrication bearing 6 while flushing the mechanical seal 5.
The impeller 2 can be provided with a back blade or a structure of a sealing ring and a balance hole to balance the axial force, and a circulation loop system of machine seal flushing fluid and water lubrication fluid of the water lubrication bearing 6 is formed at the same time.
In this embodiment, the water cooling structure 4 includes a water cooling jacket 41.
The water cooling jacket 41 is sleeved outside the motor 3, the sealing layer 7 is sleeved on the outer wall of the motor 3, and a water cooling cavity 42 is formed between the water cooling jacket 41 and the sealing layer 7.
The side wall of the water jacket 41 is provided with a cooling water outlet 43 and a cooling water inlet 44. The water cooling jacket 41 is fixedly connected with the pump shell 1.
It should be noted that, in order to increase the residence time of the cooling water in the water cooling chamber 42 and achieve better cooling effect, the cooling water inlet 44 is vertically lower than the cooling water outlet 43. The sealing layer 7 prevents water from entering the motor 3.
In the present embodiment, the motor 3 includes a stator 31, a drive shaft 32, and a rotor 33.
The rotor 33 includes a shaft sleeve 331 and a magnetic steel 332 disposed on the circumference of the shaft sleeve 331, the shaft sleeve 331 is sleeved on the driving shaft 32, and the stator 31 is sleeved on the magnetic steel 332.
The outer wall of the stator 31 is sleeved with a sealing layer 7, and the water cooling jacket 41 is sleeved outside the stator 31.
It should be noted that the number of the stators 31 is two, and the two stators 31 are symmetrically disposed. The cross section of stator 31 is the C font structure, and stator 31 centre gripping is in the outside of magnet steel 332, and magnet steel 332 is the permanent magnet. The water cooling jacket 41 is of an annular structure, and the inner annular surface of the water cooling jacket 41 is close to the outer wall of the shaft sleeve 331.
The terminal 34 of motor 3 passes and connects in the coil of stator 31 behind the water jacket 41, and the coil of stator 31 is the main source that generates heat of motor 3, the utility model discloses a stator 31 of motor 3 be located the rotor 33 outside, also be favorable to the cooling, also be convenient for arrange water jacket 41 simultaneously and realize further water-cooling. Although the stator 31 is disposed outside to contribute to the cooling of the motor 3, the natural cooling method is not sufficient to cool the motor 3. In order to further reduce the temperature of the motor 3, the heat generated by the coil can be taken away by introducing circulating cooling water into the water cooling cavity 42, and the problem that the centrifugal pump unit is low in efficiency due to heating of the motor 3 is solved.
In this embodiment, the sealing layer 7 is a thin metal layer wrapped around the coil of the stator 31.
It should be noted that, a coil is wound on the stator 31, and the outer side of the coil is wrapped by a metal thin layer, which plays a role in sealing.
In this embodiment, the bearing support 8 is further included, and the bearing support 8 includes a housing 81, a positioning bearing 82, and an end cover 83.
The housing 81 is mounted on the upper portion of the water cooling jacket 41, the positioning bearing 82 is mounted in the housing 81, and the end cover 83 is mounted on the top of the housing 81.
The upper end of the driving shaft 32 passes through the water cooling jacket 41 and the bottom wall of the housing 81 in sequence and then is installed in the bearing.
It should be noted that, the positioning bearing 82 is a pair of double-row angular contact ball bearings, and the double-row angular contact ball bearings perform axial positioning and simultaneously bear residual axial force of the centrifugal pump unit, so as to ensure normal operation of the centrifugal pump unit.
In the present embodiment, it is apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics of the present invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (6)
1. The utility model provides a water-cooling disk tombarthite permanent-magnet machine driven centrifugal pump unit which characterized in that: comprises a pump shell (1), an impeller (2), a motor (3), a water cooling structure (4) and a mechanical seal (5);
the impeller (2) is arranged in the pump shell (1), a liquid outlet is formed in the side wall of the pump shell (1), and a liquid inlet is formed in the bottom of the pump shell (1);
the motor (3) is mounted at the top of the pump shell (1), the motor (3) is a disc type rare earth permanent magnet motor, and the water cooling structure (4) is arranged on the motor (3);
the lower end of a driving shaft (32) of the motor (3) penetrates through a shaft hole in the top of the pump shell (1) and then is connected with a rotating shaft of the impeller (2), and the mechanical seal (5) is arranged between the driving shaft (32) and the shaft hole.
2. The water-cooled disc type rare earth permanent magnet motor-driven centrifugal pump unit according to claim 1, characterized in that: and a water lubrication bearing (6) is arranged between the mechanical seal (5) and the shaft hole.
3. The water-cooled disc type rare earth permanent magnet motor-driven centrifugal pump unit according to claim 1, characterized in that: the water cooling structure (4) comprises a water cooling jacket (41);
the water cooling jacket (41) is sleeved outside the motor (3), the sealing layer (7) is sleeved on the outer wall of the motor (3), and a water cooling cavity (42) is formed between the water cooling jacket (41) and the sealing layer (7);
the side wall of the water cooling jacket (41) is provided with a cooling water outlet (43) and a cooling water inlet (44); the water cooling jacket (41) is fixedly connected with the pump shell (1).
4. The water-cooled disc type rare earth permanent magnet motor-driven centrifugal pump unit according to claim 3, characterized in that: the motor (3) comprises a stator (31), the drive shaft (32), and a rotor (33);
the rotor (33) comprises a shaft sleeve (331) and magnetic steel (332) arranged on the circumference of the shaft sleeve (331), the shaft sleeve (331) is sleeved on the driving shaft (32), and the stator (31) is sleeved on the magnetic steel (332);
the sealing layer (7) is sleeved on the outer wall of the stator (31), and the water cooling jacket (41) is sleeved outside the stator (31).
5. The water-cooled disc type rare earth permanent magnet motor-driven centrifugal pump unit according to claim 4, characterized in that: the sealing layer (7) is a metal thin layer wrapped on the coil of the stator (31).
6. The water-cooled disc type rare earth permanent magnet motor-driven centrifugal pump unit according to claim 4, characterized in that: the motor is characterized by further comprising a bearing seat (8) arranged at the upper part of the motor (3), wherein the bearing seat (8) comprises a shell (81), a positioning bearing (82) and an end cover (83);
the shell (81) is mounted at the upper part of the water cooling jacket (41), the positioning bearing (82) is mounted in the shell (81), and the end cover (83) is mounted at the top of the shell (81);
the upper end of the driving shaft (32) sequentially penetrates through the water cooling jacket (41) and the bottom wall of the shell (81) and then is installed in the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223022846.4U CN218325336U (en) | 2022-11-15 | 2022-11-15 | Water-cooling disc type rare earth permanent magnet motor driven centrifugal pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223022846.4U CN218325336U (en) | 2022-11-15 | 2022-11-15 | Water-cooling disc type rare earth permanent magnet motor driven centrifugal pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218325336U true CN218325336U (en) | 2023-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223022846.4U Active CN218325336U (en) | 2022-11-15 | 2022-11-15 | Water-cooling disc type rare earth permanent magnet motor driven centrifugal pump unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218325336U (en) |
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2022
- 2022-11-15 CN CN202223022846.4U patent/CN218325336U/en active Active
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