CN113809882B - Vacuum pump power assembly - Google Patents
Vacuum pump power assembly Download PDFInfo
- Publication number
- CN113809882B CN113809882B CN202110938175.7A CN202110938175A CN113809882B CN 113809882 B CN113809882 B CN 113809882B CN 202110938175 A CN202110938175 A CN 202110938175A CN 113809882 B CN113809882 B CN 113809882B
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- ring
- rotor
- rotating shaft
- vacuum pump
- outer rotor
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- 238000001816 cooling Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 239000004576 sand Substances 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/187—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to inner stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
Abstract
The application provides a vacuum pump power assembly, and belongs to the technical field of machinery. It has solved the not good problem of current vacuum pump efficiency. The vacuum pump power assembly comprises a bracket, a motor and a pump rotor arranged on the bracket, wherein the motor is an outer rotor motor, the outer rotor motor comprises a framework for installing a stator and an outer rotor sleeved outside the framework and in a cylindrical shape, the framework is fixedly connected with the bracket, a central hole penetrating the pump rotor axially is formed in the framework, a rotating shaft is arranged in the central hole and coaxially arranged with the outer rotor, the rotating shaft is in linear distribution with the pump rotor and is rotationally connected with the framework, one end of the rotating shaft is fixedly connected with the outer rotor through a connecting piece, and the other end of the rotating shaft is connected with the pump rotor. The vacuum pump power assembly can improve the working efficiency of the vacuum pump.
Description
Technical Field
The application belongs to the technical field of machinery, and relates to a vacuum pump, in particular to a vacuum pump power assembly.
Background
Vacuum pumps refer to devices or apparatus that draw air from a container being evacuated using mechanical, physical, chemical, or physicochemical means to obtain a vacuum.
The utility model provides an electron vacuum pump rotor location structure (application number: 201921985746.7) that current vacuum pump is as chinese patent storehouse discloses, includes motor, flange, cavity, upper cover plate and lower apron, the motor is installed in the bottom surface of flange, lower apron, cavity and upper cover plate set gradually in the top surface of flange from bottom to top, be provided with the rotor in the cavity, the output axial cavity of motor extends and its tip shaping has the flat department face of symmetry setting, the center of rotor seted up cup joint in flat department's face's flat department's through-hole.
The vacuum pump has the problem of small starting torque, and the working efficiency of the vacuum pump is affected.
Disclosure of Invention
The application aims to solve the problems in the prior art, and provides a vacuum pump power assembly which solves the technical problems of improving the working efficiency.
The aim of the application can be achieved by the following technical scheme: the vacuum pump power assembly comprises a bracket, a motor and a pump rotor arranged on the bracket, and is characterized in that the motor is an outer rotor motor, the outer rotor motor comprises a framework for installing a stator and an outer rotor sleeved outside the framework and in a cylindrical shape, the framework is fixedly connected with the bracket, a central hole penetrating the pump rotor along the axial direction is formed in the framework, a rotating shaft is arranged in the central hole and coaxially arranged with the outer rotor, the rotating shaft is in linear distribution with the pump rotor, the rotating shaft is rotationally connected with the framework, one end of the rotating shaft is fixedly connected with the outer rotor through a connecting piece, and the other end of the rotating shaft is connected with the pump rotor.
The outer rotor motor has larger torque and torque sealing, so that the vacuum pump obtains larger starting torque, and the service life of the vacuum pump can be prolonged while the working efficiency of the vacuum pump is improved.
In the above vacuum pump power assembly, the connecting piece is a connecting cover, the connecting cover is composed of a first ring body, a second ring body and a circle of connecting rods arranged between the first ring body and the second ring body, the second ring body is positioned at the inner side of the first ring body and is coaxially arranged between the first ring body and the second ring body, the circle of connecting rods are circumferentially distributed at intervals along the ring body, two ends of each connecting rod are respectively connected with the first ring body and the second ring body, and the first ring body and the second ring body are respectively fixedly connected with the outer rotor and the rotating shaft. By adopting the design, the device has the advantages of simple structure and stable connection.
In the vacuum pump power assembly, the rotating shaft is fixedly provided with the radiating blades, and the connecting cover is positioned between the radiating blades and the outer rotor. When the vacuum pump is used, the radiating blades rotate along with the rotating shaft, so that air is supplied to the outer rotor through a gap formed by two adjacent connecting rods, the stator is accelerated to radiate, the working stability and the service life of the outer rotor motor are improved, and the purpose of improving the working efficiency of the vacuum pump is stably realized.
In another aspect, in the vacuum pump power assembly, the connecting piece is a cooling fan, the cooling fan comprises an inner ring and an outer ring which are coaxially arranged, a circle of blades uniformly distributed along the circumferential direction of the inner ring are distributed between the inner ring and the outer ring, the inner ring and the outer ring are connected through the blades, and the inner ring and the outer ring are respectively fixedly connected with the rotating shaft and the outer rotor. When the motor is used, the cooling fan rotates along with the rotor to cool the stator, so that the working stability and service life of the outer rotor motor are improved.
The cooling fan is used for connecting the outer rotor with the rotating shaft, realizing linkage of the outer rotor and the rotating shaft, and rotating along with the outer rotor to cool the stator, namely, the cooling fan has the dual-purpose effect of one object, and is convenient to assemble while simplifying the structure.
In the vacuum pump power assembly, the ring body extends to the outer rotor direction to integrally form the guide ring, the guide ring is matched with the outer rotor, and the guide ring is inserted into the outer rotor and used for mounting and guiding the outer rotor and the ring body I, so that the assembly is facilitated.
In the vacuum pump power assembly, the concave cavity coaxial with the pump rotor is formed on the support, the cavity opening of the concave cavity faces the motor, one end of the pump rotor is located in the concave cavity, the locating ring is formed on the bottom wall of the concave cavity and sleeved outside the pump rotor, one end of the rotating shaft extends into the locating ring and is connected with the pump rotor, the first bearing is arranged in the locating ring, the outer ring of the first bearing is fixedly connected with the locating ring, the pump rotor and the rotating shaft are fixedly connected with the inner ring of the first bearing, the connecting part of the pump rotor and the rotating shaft directly obtains the first bearing for supporting, and the transmission stability and the transmission precision are improved.
In the vacuum pump power assembly, the framework is composed of a vertically arranged pipe body and an annular connecting seat formed on the outer wall of the pipe body, the pipe body is used for installing the stator, the inner hole of the pipe body is the central hole, the connecting seat is positioned between the outer rotor and the support, the connecting seat is fixedly connected with the support, and the connecting seat shields the cavity mouth of the cavity so as to prevent impurities such as dust from entering the cavity, and improve the transmission stability of the pump rotor and the rotating shaft.
The connecting seat is used for connecting the motor and the framework and shielding the cavity opening, namely, the connecting seat has the dual-purpose effect of one object, and is further convenient to assemble while simplifying the structure.
In the vacuum pump power assembly, a gap exists between the outer rotor and the connecting seat, and the gap is communicated with the inner cavity of the outer rotor, so that a smoother heat dissipation air passage is obtained, the heat dissipation speed and the heat dissipation effect of the stator are increased, the service life and the working stability of the motor are further improved, and the efficiency of the vacuum pump is further improved.
In the vacuum pump power assembly, the connecting seats are pressed on the support, the connecting seats are fixedly connected with the support through the first screws, and at least two screws are distributed along the circumferential direction of the connecting seats.
In the vacuum pump power assembly, the support is provided with the threaded holes axially arranged along the connecting seat, the connecting seat is correspondingly provided with the through holes, the threaded holes and the screws are identical in number and in one-to-one correspondence, the rod part of the screw penetrates through the through holes and rotates in the threaded holes, and the head part of the screw is pressed on the connecting seat.
In the vacuum pump power assembly, an annular groove with an L-shaped axial section is formed between the connecting seat and the pipe body, the through hole is formed in the bottom wall of the annular groove, a circle of convex strips uniformly distributed along the circumferential direction of the pipe body are formed in the bottom wall of the annular groove, the lengths of the convex strips extend along the radial direction of the pipe body, one ends of the convex strips extend to the outer wall of the pipe body, so that the strength of the bottom wall of the annular groove is enhanced, and the connection stability of the framework and the support is improved.
In the vacuum pump power assembly, the annular connecting part is formed by upward extending the bottom wall of the annular groove, the connecting parts and the threaded holes are the same in number and in one-to-one correspondence in position, the inner holes of the connecting parts are the through holes, the other ends of the convex strips which are opposite to the connecting parts extend to the outer wall of the connecting parts, and the other ends of the residual convex strips extend to the side wall of the annular groove, so that the connection stability of the connecting seat and the support is further enhanced.
In the vacuum pump power assembly, the connecting ring is integrally formed on the outer wall of the connecting seat, the baffle ring matched with the connecting ring is integrally formed on the edge of the cavity opening of the concave cavity, the connecting ring is sleeved outside the baffle ring, and the connecting seat is pressed on the baffle ring so as to guide the installation of the connecting seat, and the connecting seat and the support are further convenient to connect.
In the vacuum pump power assembly, the connecting ring is pressed on the support, the connecting ring is fixedly connected with the support through the second screws, and the second screws are at least two and uniformly distributed along the circumference of the connecting ring so as to further strengthen the connection stability of the framework and the support.
In the vacuum pump power assembly, two ends of the rotating shaft are rotationally connected with the pipe body through the second bearing.
In the vacuum pump power assembly, annular steps are arranged on the inner walls of the two ends of the pipe body, the two bearings II are respectively arranged in the two annular steps, the outer rings of the bearings II are pressed on the bottom wall of the annular steps, the rotating shaft is further limited in the axial direction, and the working stability of the drainage pump is improved.
Compared with the prior art, the vacuum pump power assembly has the following advantages:
1. the outer rotor motor has larger torque and torque sealing, so that the vacuum pump obtains larger starting torque, and the service life of the vacuum pump can be prolonged while the working efficiency of the vacuum pump is improved.
2. The connecting seat is used for connecting the motor and the framework and shielding the cavity opening, namely, the connecting seat has the dual-purpose effect of one object, and is further convenient to assemble while simplifying the structure.
3. The pump rotor and the rotating shaft are fixedly connected with the inner ring of the first bearing, so that the connecting part of the pump rotor and the rotating shaft is directly supported by the bearing, and the transmission stability and the transmission precision are improved.
Drawings
Fig. 1 is a schematic perspective view of a vacuum pump power assembly.
FIG. 2 is a schematic cross-sectional structural view of a vacuum pump power assembly.
Fig. 3 is a schematic structural view of the connection cover.
Fig. 4 is a schematic structural view of the skeleton.
Fig. 5 is a schematic structural view of the bracket.
In the figure, 1, a bracket; 1a, a concave cavity; 1b, a positioning ring; 1c, a baffle ring; 2. a pump rotor; 3. a skeleton; 3a, a tube body; 3a1, a central hole; 3b, a connecting seat; 3c, raised strips; 3d, a connecting part; 3e, a connecting ring; 4. a stator; 5. an outer rotor; 6. a rotating shaft; 7. a connection cover; 7a, a first ring body; 7a1, a guide ring; 7b, a second ring body; 7c, a connecting rod; 8. a first bearing; 9. a heat radiation blade; 10. a first screw; 11. a second screw; 12. and a second bearing.
Detailed Description
The following are specific embodiments of the present application and the technical solutions of the present application will be further described with reference to the accompanying drawings, but the present application is not limited to these embodiments.
Example 1
As shown in fig. 1 and 2, the vacuum pump power assembly includes a bracket 1, a motor, and a pump rotor 2 provided on the bracket 1.
In particular the number of the elements,
as shown in fig. 2, the motor is of the type of an outer rotor motor including a bobbin 3, a stator 4, and an outer rotor 5 in a cylindrical shape. The stator 4 is mounted on the frame 3 and between the outer rotor 5 and the frame 3, and the mounting manners of the stator 4 and the outer rotor 5 are all existing and will not be described in detail herein. The framework 3 is fixedly connected with the support 1, the framework 3 is provided with a central hole 3a1 which is penetrated and arranged along the axial direction of the pump rotor 2, a rotating shaft 6 is arranged in the central hole 3a1, the rotating shaft 6 and the outer rotor 5 are coaxially arranged, the rotating shaft 6 and the pump rotor 2 are in linear distribution, the rotating shaft 6 is rotationally connected with the framework 3, one end of the rotating shaft 6 is fixedly connected with the outer rotor 5 through a connecting piece, and the other end of the rotating shaft 6 is connected with the pump rotor 2. The outer rotor motor has larger torque and torque sealing, so that the vacuum pump obtains larger starting torque, and the service life of the vacuum pump can be prolonged while the working efficiency of the vacuum pump is improved.
In the present embodiment of the present application, in the present embodiment,
as shown in fig. 2 and 3, the connector structure is as follows: the connecting member is a connecting cover 7, and it is preferable that the connecting cover 7 is of an integral structure. As shown in fig. 1, the connection cover 7 is composed of a ring body one 7a, a ring body two 7b, and a ring of connecting rods 7c disposed between the ring body one 7a and the ring body two 7 b. Wherein the second ring body 7b is positioned at the inner side of the first ring body 7a and the second ring body 7b and the first ring body 7a are coaxially arranged; a circle of connecting rods 7c are circumferentially distributed at intervals along the ring body I7 a, at this time, gaps exist between two adjacent connecting rods 7c, and two ends of each connecting rod 7c are respectively connected with the ring body I and the ring body II 7b; the ring body one 7a and the ring body two 7b are respectively fixedly connected with the outer rotor 5 and the rotating shaft 6. In an actual product, the second ring body 7b is sleeved on the rotating shaft 6, and the second ring body 7b is fixedly connected with the rotating shaft 6 through bolts or welding; the first ring body 7a extends towards the outer rotor 5 to form a guide ring 7a1 integrally, the guide ring 7a1 and the first ring body 7a are coaxial, the guide ring 7a1 is matched with the outer rotor 5, the guide ring 7a1 is inserted into the outer rotor 5 and used for guiding the outer rotor 5 and the first ring body 7a in an installation mode, and assembly is facilitated. In this embodiment, it is preferable that the ring body one 7a and the outer rotor 5 are welded and fixedly connected, and naturally, it is also possible that the outer rotor 5 and the ring body one 7a are fixedly connected by adopting a bolt or interference fit.
As shown in fig. 2 and 5, the rotary shaft 6 and the pump rotor 2 are connected as follows: the bracket 1 is provided with a concave cavity 1a coaxial with the pump rotor 2, the motor is positioned outside the concave cavity 1a, and the cavity opening of the concave cavity 1a faces towards the motor. One end of the pump rotor 2 is positioned in the concave cavity 1a, the other end of the pump rotor 2 extends out of the concave cavity 1a, and the other end of the pump rotor 2 forms a seal with the bracket 1 through an oil seal. The bottom wall of the concave cavity 1a is provided with a positioning ring 1b, the positioning ring 1b is coaxial with the pump rotor 2, and the positioning ring 1b is sleeved outside the pump rotor 2. One end of the rotating shaft 6 far away from the connecting piece stretches into the positioning ring 1b and is connected with the pump rotor 2, and the connecting mode is as follows: the pump rotor 2 is provided with a flat block-shaped installation part, the end face of the rotating shaft 6 is provided with a strip-shaped groove matched with the installation part, the length of the strip-shaped groove radially extends along the rotating shaft 6, two ends of the strip-shaped groove are all open, and the installation part is inserted into the strip-shaped groove, so that the rotating shaft 6 stably drives the pump rotor 2 to rotate. Naturally, it is also possible that the shaft 6 and the pump rotor 2 are connected by a flat key. Further, the first bearing 8 is arranged in the positioning ring 1b, the outer ring of the first bearing 8 is fixedly connected with the positioning ring 1b, the pump rotor 2 and the rotating shaft 6 are fixedly connected with the inner ring of the first bearing 8, so that the first bearing 8 is directly supported at the 3d position of the connecting part of the pump rotor 2 and the rotating shaft 6, and the transmission stability and the transmission precision are improved. Preferably, the inner ring of the first bearing 8 is fixedly connected with the pump rotor 2 and the rotating shaft 6 in an interference fit manner; the outer ring of the first bearing 8 is fixedly connected with the positioning ring 1b in an interference fit mode.
As shown in fig. 2 and 4, the skeleton 3 has the following structure: the framework 3 is of an integrated structure, and the framework 3 consists of a vertically arranged pipe body 3a and a connecting seat 3b which is formed on the outer wall of the pipe body 3a and is annular. Wherein, the tube body 3a is used for installing the stator 4, and the inner hole of the tube body 3a is the central hole 3a1; the connecting seat 3b is positioned between the outer rotor 5 and the support 1, the connecting seat 3b is fixedly connected with the support 1, and the connecting seat 3b shields the cavity opening of the cavity 1a so as to prevent dust and other impurities from entering the cavity 1a, at the moment, the connecting seat 3b is used for connecting the motor and the framework 3 and shielding the cavity opening of the cavity 1a, namely, in the application, the connecting seat 3b has a dual-purpose effect, and the structure is simplified and meanwhile, the assembly is convenient.
As a further explanation of the present application,
as shown in fig. 1, the rotating shaft 6 is fixed with heat radiating fins 9, and the connection cover 7 is located between the heat radiating fins 9 and the outer rotor 5. A gap exists between the outer rotor 5 and the connecting seat 3b, and the gap is communicated with the inner cavity of the outer rotor 5. When the vacuum pump is used, the radiating blades 9 rotate along with the rotating shaft 6 so as to supply air into the outer rotor 5 through a gap formed by two adjacent connecting rods 7c, and the air is discharged through the gap between the outer rotor 5 and the connecting seat 3b so as to form a complete and smooth radiating air passage, so that the stator 4 radiates heat, the working stability and the service life of the outer rotor motor are improved, and the purpose of improving the working efficiency of the vacuum pump is stably realized.
The connecting seat 3b is pressed on the bracket 1, the connecting seat 3b is fixedly connected with the bracket 1 through at least two screws 10, and the screws 10 are distributed along the circumferential direction of the connecting seat 3 b. Preferably, the number of the screws 10 is 3, and the mounting mode of the screws 10 is as follows: the bracket 1 is provided with threaded holes axially arranged along the connecting seat 3b, the connecting seat 3b is correspondingly provided with through holes, the number of the through holes, the threaded holes and the number of the first 10 screws are the same and the positions of the first 10 screws are in one-to-one correspondence, the first 10 rod parts of the first 10 screws penetrate through the through holes and are screwed in the threaded holes, and the heads of the first 10 screws are pressed on the connecting seat 3 b. Further stated, constitute the annular channel that axial cross-section is L shape between connecting seat 3b and the body 3a, the through-hole shaping is on the annular channel diapire, the shaping has round along the radial extension of body 3a circumference equipartition's sand grip 3c on the annular channel diapire, sand grip 3c length, and sand grip 3c one end extends to body 3a outer wall, the annular channel diapire upwards extends to form and is annular connecting portion 3d, connecting portion 3d and screw hole quantity and position one-to-one, connecting portion 3d hole is above-mentioned through-hole, the other end of sand grip 3c that sets up relatively with connecting portion 3d extends to connecting portion 3d outer wall, and the other end of remaining sand grip 3c extends to the annular channel lateral wall, effectively strengthen the connection stability of connecting seat 3b and support 1.
Furthermore, a connecting ring 3e is integrally formed on the outer wall of the connecting seat 3b, the connecting ring 3e is pressed on the bracket 1, the connecting ring 3e is fixedly connected with the bracket 1 through a second screw 11, and at least two screws 11 are uniformly distributed along the circumference of the connecting ring 3e so as to further strengthen the connection stability of the framework 3 and the bracket 1. Preferably, the number of the second screws 11 is 3. The cavity mouth edge integrated into one piece of cavity 1a has the backing ring 1c that matches with go-between 3e, and go-between 3e overlaps outside backing ring 1c, and connecting seat 3b presses on backing ring 1c to the installation to connecting seat 3b carries out the direction to guide, further makes things convenient for connecting seat 3b and support 1 to connect.
The rotating shaft 6 is connected with the framework 3 in the following way: both ends of the rotating shaft 6 are rotatably connected with the pipe body 3a through the bearings II 12. Further, annular steps are arranged on the inner walls of the two ends of the pipe body 3a, the two bearings II 12 are respectively arranged in the two annular steps, the outer ring of each bearing II 12 is pressed on the bottom wall of the annular step, the rotating shaft 6 is further limited in the axial direction, and the working stability of the drainage pump is improved.
Example two
The structure and principle of the second embodiment are basically the same as those of the first embodiment, except that: the connecting piece is a cooling fan, the cooling fan comprises an inner ring and an outer ring which are coaxially arranged, a circle of blades uniformly distributed along the circumferential direction of the inner ring are distributed between the inner ring and the outer ring, the inner ring and the outer ring are connected through the blades, and the inner ring and the outer ring are respectively fixedly connected with the rotating shaft 6 and the outer rotor 5. When the motor is used, the cooling fan rotates along with the rotor to cool the stator 4, so that the working stability and service life of the outer rotor motor are improved. The cooling fan is used for connecting the outer rotor 5 and the rotating shaft 6, realizing the linkage of the outer rotor 5 and the rotating shaft 6 and rotating along with the outer rotor 5 to cool the stator 4, namely, in the application, the cooling fan has the dual-purpose effect of one object, and is convenient to assemble while simplifying the structure.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the application. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the application or exceeding the scope of the application as defined in the accompanying claims.
Claims (7)
1. The vacuum pump power assembly comprises a bracket (1), a motor and a pump rotor (2) arranged on the bracket (1), and is characterized in that the motor is an outer rotor motor, the outer rotor motor comprises a framework (3) for installing a stator (4) and an outer rotor (5) which is sleeved outside the framework (3) and is cylindrical, the framework (3) is fixedly connected with the bracket (1), a central hole (3 a 1) which is axially penetrated and arranged along the pump rotor (2) is formed in the framework (3), a rotating shaft (6) is arranged in the central hole (3 a 1) in a coaxial manner, the rotating shaft (6) and the outer rotor (5) are linearly distributed, the rotating shaft (6) is rotationally connected with the framework (3), one end of the rotating shaft (6) is fixedly connected with the outer rotor (5) through a connecting piece, and the other end of the rotating shaft (6) is connected with the pump rotor (2); a concave cavity (1 a) coaxial with the pump rotor (2) is formed on the support (1), a cavity opening of the concave cavity (1 a) faces towards the motor, one end of the pump rotor (2) is positioned in the concave cavity (1 a), a positioning ring (1 b) is formed on the bottom wall of the concave cavity (1 a), the positioning ring (1 b) is sleeved outside the pump rotor (2), one end of the rotating shaft (6) extends into the positioning ring (1 b) and is connected with the pump rotor (2), a first bearing (8) is arranged in the positioning ring (1 b), the outer ring of the first bearing (8) is fixedly connected with the positioning ring (1 b), and the pump rotor (2) and the rotating shaft (6) are fixedly connected with the inner ring of the first bearing (8); the framework (3) is composed of a vertically arranged pipe body (3 a) and a connecting seat (3 b) which is formed on the outer wall of the pipe body (3 a) and is annular, the pipe body (3 a) is used for installing the stator (4), an inner hole of the pipe body (3 a) is the central hole (3 a 1), the connecting seat (3 b) is positioned between the outer rotor (5) and the support (1), the connecting seat (3 b) is fixedly connected with the support (1), and the connecting seat (3 b) blocks a cavity opening of the concave cavity (1 a); a gap is formed between the outer rotor (5) and the connecting seat (3 b), and the gap is communicated with the inner cavity of the outer rotor (5); the inner ring of the first bearing (8) is fixedly connected with the pump rotor (2) and the rotating shaft (6) in an interference fit mode.
2. The vacuum pump power assembly according to claim 1, wherein the connecting piece is a connecting cover (7), the connecting cover (7) is composed of a first ring body (7 a), a second ring body (7 b) and a circle of connecting rods (7 c) arranged between the first ring body (7 a) and the second ring body (7 b), the second ring body (7 b) is positioned at the inner side of the first ring body (7 a) and is coaxially arranged with the first ring body (7 a), the circle of connecting rods (7 c) are circumferentially distributed at intervals along the first ring body (7 a), two ends of the connecting rods (7 c) are respectively connected with the first ring body (7 a) and the second ring body (7 b), and the first ring body (7 a) and the second ring body (7 b) are respectively fixedly connected with the outer rotor (5) and the rotating shaft (6).
3. Vacuum pump power assembly according to claim 2, characterized in that the rotor shaft (6) is fixed with cooling fins (9) and the connection cover (7) is located between the cooling fins (9) and the outer rotor (5).
4. The vacuum pump power assembly according to claim 1, wherein the connecting piece is a radiator fan, the radiator fan comprises an inner ring and an outer ring which are coaxially arranged, a circle of blades uniformly distributed along the circumferential direction of the inner ring are distributed between the inner ring and the outer ring, the inner ring and the outer ring are connected through the blades, and the inner ring and the outer ring are respectively fixedly connected with the rotating shaft (6) and the outer rotor (5).
5. Vacuum pump power assembly according to claim 1, characterized in that the connection seat (3 b) is pressed on the support (1), the connection seat (3 b) is fixedly connected with the support (1) through at least two screws (10), and the screws (10) are distributed along the circumference of the connection seat (3 b).
6. The vacuum pump power assembly according to claim 5, wherein the bracket (1) is provided with threaded holes axially arranged along the connecting seat (3 b), the connecting seat (3 b) is correspondingly provided with through holes, the number of the through holes, the threaded holes and the screw I (10) are the same and the positions of the through holes, the threaded holes and the screw I (10) are in one-to-one correspondence, the rod part of the screw I (10) penetrates through the through holes and is screwed into the threaded holes, and the head part of the screw I (10) is pressed on the connecting seat (3 b).
7. The vacuum pump power assembly according to claim 6, wherein an annular groove with an L-shaped axial section is formed between the connecting seat (3 b) and the pipe body (3 a), the through hole is formed on the bottom wall of the annular groove, a circle of convex strips (3 c) which are uniformly distributed along the circumferential direction of the pipe body (3 a) are formed on the bottom wall of the annular groove, the lengths of the convex strips (3 c) extend along the radial direction of the pipe body (3 a), and one end of the convex strips (3 c) extends to the outer wall of the pipe body (3 a).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110938175.7A CN113809882B (en) | 2021-08-16 | 2021-08-16 | Vacuum pump power assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110938175.7A CN113809882B (en) | 2021-08-16 | 2021-08-16 | Vacuum pump power assembly |
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| CN113809882A CN113809882A (en) | 2021-12-17 |
| CN113809882B true CN113809882B (en) | 2023-11-14 |
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|---|---|---|---|---|
| CN101318460A (en) * | 2007-06-07 | 2008-12-10 | 奇瑞汽车股份有限公司 | Power assembly of hybrid power automobile |
| CN101383534A (en) * | 2007-09-07 | 2009-03-11 | 中国科学院沈阳科学仪器研制中心有限公司 | Motor for vacuum pump |
| CN103398013A (en) * | 2013-08-12 | 2013-11-20 | 北京中科科仪股份有限公司 | Turbine molecular pump |
| CN105720789A (en) * | 2016-04-26 | 2016-06-29 | 贾建伟 | Permanent magnet coupling |
| CN213585308U (en) * | 2020-12-02 | 2021-06-29 | 上海施依洛风机有限公司 | External rotor motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106469964B (en) * | 2016-10-31 | 2018-05-08 | 北京金风科创风电设备有限公司 | Permanent magnet motor magnetic pole protects coating moulding process and process equipment |
-
2021
- 2021-08-16 CN CN202110938175.7A patent/CN113809882B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101318460A (en) * | 2007-06-07 | 2008-12-10 | 奇瑞汽车股份有限公司 | Power assembly of hybrid power automobile |
| CN101383534A (en) * | 2007-09-07 | 2009-03-11 | 中国科学院沈阳科学仪器研制中心有限公司 | Motor for vacuum pump |
| CN103398013A (en) * | 2013-08-12 | 2013-11-20 | 北京中科科仪股份有限公司 | Turbine molecular pump |
| CN105720789A (en) * | 2016-04-26 | 2016-06-29 | 贾建伟 | Permanent magnet coupling |
| CN213585308U (en) * | 2020-12-02 | 2021-06-29 | 上海施依洛风机有限公司 | External rotor motor |
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| CN113809882A (en) | 2021-12-17 |
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Effective date of registration: 20230902 Address after: 317500 No.2, Changye Road, Chengdong street, Wenling City, Taizhou City, Zhejiang Province Applicant after: Zhejiang weipeng refrigeration equipment Co.,Ltd. Address before: 317500 Zhejiang weipeng, No. 2, Changye Road, Chengdong street, Wenling City, Taizhou City, Zhejiang Province Applicant before: Guo Dingyun |
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