CN220382829U

CN220382829U - Single-impeller pull rod permanent magnet rotor structure for air suspension blower

Info

Publication number: CN220382829U
Application number: CN202321819043.3U
Authority: CN
Inventors: 潘超; 尹海日; 毛红良; 王胜兵; 张达
Original assignee: Jiangsu Haituobin Future Industrial Technology Group Co ltd
Current assignee: Jiangsu Haituobin Future Industrial Technology Group Co ltd
Priority date: 2023-07-12
Filing date: 2023-07-12
Publication date: 2024-01-23
Anticipated expiration: 2033-07-12

Abstract

The utility model discloses a single-impeller pull rod permanent magnet rotor structure for an air suspension blower, which relates to the technical field of air suspension blowers and comprises a motor rotor and impellers, wherein the motor rotor comprises a permanent magnet core body, a sheath, a pull rod, a thrust disc, a plug and a shaft head, the sheath is sleeved outside the permanent magnet core body, the plug is positioned at two ends of the sheath and is in transition fit with the sheath, and a boss is integrally formed in the middle of the plug; the shaft head is sleeved outside the boss, a limiting ring piece is arranged between the shaft head and the plug, the limiting ring piece is sleeved outside the boss, and the shaft head is abutted with the limiting ring piece; the limiting ring piece comprises an integrally formed ring plate and a limiting piece, the end face of the sheath is provided with a mounting groove for the limiting piece to enter, and the inner side wall of the sheath is provided with a limiting groove matched with the limiting piece. The split type design of the utility model has the advantages of convenient processing, small coaxiality error, stable and reliable connection between the plugging and the sheath, and convenient disassembly and maintenance.

Description

Single-impeller pull rod permanent magnet rotor structure for air suspension blower

Technical Field

The utility model relates to the technical field of air suspension blowers, in particular to a single-impeller pull rod permanent magnet rotor structure for an air suspension blower.

Background

An air suspension blower is a blower in which air generates a dynamic pressure effect between a rotor and a foil bearing surface under high-speed rotation of a blower rotor, and a high-pressure air film is formed to lift the rotor. The air suspension blower mainly comprises an impeller, an air suspension bearing, a frequency converter, a high-speed permanent magnet motor and a structural control system thereof. The motor main shaft is coaxial with the fan impeller, and the high-speed rotor system is directly supported by the air suspension bearing.

Most of conventional centrifugal fan rotors are of integrated structures, and the problems that the whole weight of the rotor is large and the shaft heads of the rotor are worn and difficult to replace exist. And because the existing labeling permanent magnet rotor mostly adopts a segmented tile permanent magnet, a proper fit clearance needs to be set for the installation and fit of the tile permanent magnet and a rotor mandrel, the structure is complex, and the magnet is demagnetized after being used for a period of time, so that the problems of heating and low working efficiency of the motor are caused.

The traditional Chinese patent with publication number of CN207906108U discloses a single-impeller pull rod permanent magnet rotor structure for an air suspension centrifugal blower, the rotor structure adopts split assembly, the pull rod is split with a motor rotor, the integral axial length of the motor rotor is reduced, the processing is convenient, the coaxiality error is small, the two are connected by screw threads, and the dismounting is convenient; and the rotor shaft head is split into a sleeved plug and a shaft head, wherein the plug is embedded into the motor rotor and is in interference fit with the motor rotor.

Aiming at the prior art, the inventor considers that the plugging is in interference fit with the end part of the sheath, the plugging is easy to generate loosening and detaching when the rotor structure runs at high speed for a long time, and the disassembly and assembly operation of the plugging are inconvenient.

Disclosure of Invention

In order to improve the stability of plugging in the sheath and the convenience of plugging, disassembly and assembly, the utility model provides a single impeller pull rod permanent magnet rotor structure for an air suspension blower.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides an air suspension is single impeller pull rod permanent magnet rotor structure for air blower, includes motor rotor and the impeller of coaxial setting in motor rotor one end, motor rotor includes permanent magnet core, sheath, pull rod, thrust dish, shutoff and spindle nose, the sheath cover is located the permanent magnet core outside, the shutoff is located the sheath both ends and with sheath transition fit, the middle part integrated into one piece of shutoff has the boss; the shaft head is sleeved outside the boss, a limiting ring piece is arranged between the shaft head and the plug, the limiting ring piece is sleeved outside the boss, and the shaft head is abutted with the limiting ring piece;

the limiting ring piece comprises an integrally formed annular plate and a limiting piece, the outer diameter of the annular plate is the same as the inner diameter of the sheath, the limiting piece is positioned on the circumferential outer side of the annular plate and on one side of the annular plate, which is close to the permanent magnet core body, an installation groove for the limiting piece to enter is formed in the end face of the sheath, the inner side wall of the sheath is provided with a limiting groove matched with the limiting piece, and one end of the limiting groove is communicated with the installation groove;

the two pull rods are symmetrically arranged, one end of each pull rod is arranged in the corresponding boss in a penetrating mode and is in threaded connection with the corresponding boss, the other end of each pull rod is in threaded connection with the corresponding boss, the impeller and the thrust disc are sleeved outside one pull rod, and the thrust disc is located between the impeller and the shaft head.

Further, the limiting sheets are at least two, the limiting sheets are symmetrically arranged around the center of the annular plate, and the limiting sheets extend along the arc length direction of the annular plate.

Further, a plurality of positioning holes are formed in the annular plate, and positioning blocks matched with the positioning holes are fixed on the end faces, close to the plugging, of the shaft heads.

Further, one end of the shaft head, which is far away from the plugging, is integrally formed with a positioning pipe, one end of the impeller is coaxially sleeved in the positioning pipe, and the thrust disc is sleeved in the positioning pipe.

Further, the outer wall of the positioning tube is fixed with cutting, and the inner ring of the thrust disc is provided with a notch matched with the cutting.

Further, the other pull rod upper sleeve ring far away from the thrust disc is provided with an air-cooled impeller, one end of the air-cooled impeller is sleeved outside the positioning pipe of the corresponding shaft head, and the air-cooled impeller is abutted with the end face of the corresponding shaft head.

Furthermore, the plugging and the shaft heads are made of the same material, titanium alloy materials are adopted, and the pull rod is made of nickel-based superalloy materials.

The utility model has the beneficial effects that:

the rotor structure adopts a split type design, the pull rod is split with the motor rotor, the axial length of the whole motor rotor is reduced, the processing is convenient, the coaxiality error is small, and the disassembly and the maintenance are convenient;

after the plugging is installed in the sheath in a transition fit manner, the plugging is fixed in a limiting manner through the limiting ring piece, so that the connection stability and reliability between the plugging and the sheath are improved, and the plugging is convenient to disassemble, assemble and maintain.

Drawings

Fig. 1 is a cross-sectional view of the overall structure of an embodiment of the present utility model.

Fig. 2 is a partial structural cross-sectional view of an embodiment of the present utility model.

Fig. 3 is a partial exploded view of an embodiment of the present utility model for embodying a stop collar plate.

Fig. 4 is a partial block diagram of an embodiment of the present utility model for embodying a sheath.

In the figure; 1. a permanent magnet core body; 2. a sheath; 21. a mounting groove; 22. a limit groove; 3. a pull rod; 4. a thrust plate; 41. a slot; 5. plugging; 51. a boss; 6. a limiting ring piece; 61. a ring plate; 611. positioning holes; 62. a limiting piece; 7. a shaft head; 71. a positioning tube; 711. cutting; 72. a positioning block; 8. a lock nut; 9. an air-cooled impeller; 10. an impeller.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings.

The utility model discloses a single-impeller pull rod permanent magnet rotor structure for an air suspension blower.

Referring to fig. 1 to 2, a single impeller pull rod permanent magnet rotor structure for an air suspension blower includes a motor rotor and an impeller 10 coaxially disposed at one end of the motor rotor; the motor rotor comprises a permanent magnet core body 1, a sheath 2, a pull rod 3, a thrust disc 4, a plug 5 and a shaft head 7, wherein the sheath 2 is coaxially sleeved outside the permanent magnet core body 1, the permanent magnet core body 1 is a cylindrical entity and is made of neodymium iron boron permanent magnet materials, and the inner diameter of the sheath 2 is the same as the outer diameter of the permanent magnet core body 1. The plugging 5 and the shaft head 7 are made of the same material and are made of titanium alloy. The shutoff 5 is equipped with two to inlay respectively and locate sheath 2 both ends and with sheath 2 transitional fit, compare in prior art's interference fit, the dismouting of shutoff 5 is more convenient, and the installation requirement is low, is difficult for causing extra damage in the installation.

Referring to fig. 2 to 4, a boss 51 is integrally formed in the middle of the plug 5, one end of the shaft head 7 is sleeved outside the boss 51, a limiting ring piece 6 is arranged between the shaft head 7 and the plug 5, the limiting ring piece 6 is sleeved outside the boss 51, the inner ring of the limiting ring piece 6 is attached to the peripheral surface of the boss 51, and the shaft head 7 is abutted to the limiting ring piece 6. The spacing ring piece 6 includes integrated into one piece's annular plate 61 and spacing piece 62, spacing piece 62 is equipped with two in this embodiment, two spacing pieces 62 are about annular plate 61 central symmetry setting, annular plate 61 external diameter is the same with sheath 2 internal diameter, spacing piece 62 is located annular plate 61 circumference outside and is located annular plate 61 and is close to one side of permanent-magnet core body 1, spacing piece 62 extends along annular plate 61 arc length direction, make concentric centre of a circle between spacing piece 62 and the annular plate 61, the mounting groove 21 that supplies spacing piece 62 to get into is seted up to the terminal surface of sheath 2, the inside wall of sheath 2 and spacing groove 22 of spacing piece 62 looks adaptation, the one end and the mounting groove 21 of spacing groove 22 are linked together.

Referring to fig. 2 to 4, when the spacing ring piece 6 is installed, the spacing ring piece 6 is sleeved on the boss 51, the spacing piece 62 is aligned with the installation groove 21, the spacing ring piece 6 enters the sheath 2, the outer side surface of the spacing ring piece 6 is flush with the end surface of the sheath 2, and then the spacing ring piece 6 is rotated, the spacing piece 62 enters the spacing groove 22, the axial movement of the spacing ring piece 6 is limited, and the axial movement of the plugging 5 is further limited, so that the connection stability and reliability between the plugging 5 and the sheath 2 are improved.

Referring to fig. 2 to 4, the end of the shaft head 7 is abutted against the limiting ring piece 6 to limit the circumferential rotation of the limiting ring piece 6, so that the limiting fixing effect of the limiting ring piece 6 on the plugging 5 is ensured. And two positioning holes 611 are formed in the annular plate 61, two positioning blocks 72 matched with the positioning holes 611 are fixed on the end face, close to the plug 5, of the shaft head 7, and when the shaft head 7 is sleeved on the boss 51, the positioning blocks 72 are correspondingly inserted into the corresponding positioning holes 611, so that the limiting and fixing effects of the shaft head 7 on the limiting annular plate 6 are improved.

Referring to fig. 1 and 3, the pull rod 3 is made of nickel-based superalloy material, and two pull rods 3 are symmetrically arranged and are respectively positioned at two ends of the sheath 2; one end of the pull rod 3 is penetrated in the boss 51 of the plugging piece 5 and is in threaded connection with the plugging piece 5, the other end of the pull rod is in threaded connection with the locking nut 8, the impeller 10 and the thrust disc 4 are sleeved outside one of the pull rods 3, and the thrust disc 4 is positioned between the impeller 10 and the shaft head 7. One end of the shaft head 7, which is far away from the plugging 5, is integrally provided with a positioning pipe 71, one end of the impeller 10 is coaxially sleeved in the positioning pipe 71, and the thrust disc 4 is sleeved in the positioning pipe 71. The outer wall of the positioning tube 71 is fixed with a cutting 711, and the inner ring of the thrust disc 4 is provided with a notch 712 matched with the cutting 711. When installed, the inserts 711 are inserted into the corresponding notches 712, so that the thrust disk 4 and the shaft head 7 piece keep moving synchronously. The other pull rod 3 far away from the thrust disc 4 is sleeved with an air-cooled impeller 9, one end of the air-cooled impeller 9 is sleeved outside a positioning pipe 71 of the corresponding shaft head 7, and the air-cooled impeller 9 is abutted with the end face of the corresponding shaft head 7.

The utility model relates to a working principle of a single-impeller pull rod permanent magnet rotor structure for an air suspension blower, which comprises the following steps: the rotor structure adopts split type design, with pull rod 3 and motor rotor split, reduces motor rotor holistic axial length, and processing is convenient, and axiality error is little, dismouting maintenance is convenient. After the blocking piece 5 is excessively installed in the sheath 2, the limiting ring piece 6 is installed, the limiting ring piece 6 is sleeved on the boss 51, the limiting ring piece 62 is aligned with the installation groove 21, the limiting ring piece 6 enters the sheath 2, the outer side face of the limiting ring piece 6 is flush with the end face of the sheath 2, the limiting ring piece 6 is rotated, the limiting piece 62 enters the limiting groove 22, the axial movement of the limiting ring piece 6 is limited, and the axial movement of the blocking piece 5 is limited, so that the connection stability and reliability between the blocking piece 5 and the sheath 2 are improved. Through subsequent tightening of the lock nut 8, the end part of the shaft head 7 is abutted against the limiting ring piece 6, circumferential rotation of the limiting ring piece 6 is limited, and limiting fixing effect of the limiting ring piece 6 on the plugging 5 can be guaranteed.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. The utility model provides an air suspension is single impeller pull rod permanent magnet rotor structure for air-blower, includes motor rotor and coaxial impeller (10) that set up in motor rotor one end, motor rotor includes permanent magnet core (1), sheath (2), pull rod (3), thrust dish (4), shutoff (5) and spindle nose (7), its characterized in that: the sheath (2) is sleeved outside the permanent magnet core body (1), the plugs (5) are positioned at two ends of the sheath (2) and are in transition fit with the sheath (2), and a boss (51) is integrally formed in the middle of each plug (5); the shaft head (7) is sleeved outside the boss (51), a limiting ring piece (6) is arranged between the shaft head (7) and the plug (5), the limiting ring piece (6) is sleeved outside the boss (51), and the shaft head (7) is in butt joint with the limiting ring piece (6);

the limiting ring piece (6) comprises an integrally formed annular plate (61) and a limiting piece (62), the outer diameter of the annular plate (61) is the same as the inner diameter of the sheath (2), the limiting piece (62) is positioned on the circumferential outer side of the annular plate (61) and on one side, close to the permanent magnet core body (1), of the annular plate (61), an installation groove (21) for the limiting piece (62) to enter is formed in the end face of the sheath (2), and a limiting groove (22) matched with the limiting piece (62) is formed in the inner side wall of the sheath (2), and one end of the limiting groove (22) is communicated with the installation groove (21);

the utility model discloses a high-efficiency hydraulic pump, including shutoff (5), impeller, thrust disc (4), pull rod (3) symmetry is provided with two, in boss (51) of shutoff (5) are worn to locate to with shutoff (5) threaded connection to other end threaded connection has lock nut (8), impeller (10) are located outside one of them pull rod (3) with thrust disc (4) cover, thrust disc (4) are located between impeller (10) and spindle nose (7).

2. The single impeller pull rod permanent magnet rotor structure for an air suspension blower according to claim 1, wherein: the limiting plates (62) are at least two, the limiting plates (62) are arranged symmetrically about the center of the annular plate (61), and the limiting plates (62) extend along the arc length direction of the annular plate (61).

3. The single impeller pull rod permanent magnet rotor structure for an air suspension blower according to claim 2, wherein: a plurality of positioning holes (611) are formed in the annular plate (61), and a positioning block (72) matched with the positioning holes (611) is fixed on the end face, close to the plug (5), of the shaft head (7).

4. A single impeller pull rod permanent magnet rotor structure for an air suspension blower according to any one of claims 1-3, wherein: one end of the shaft head (7) far away from the plugging (5) is integrally formed with a positioning pipe (71), one end of the impeller (10) is coaxially sleeved in the positioning pipe (71), and the thrust disc (4) is sleeved in the positioning pipe (71).

5. The single impeller pull rod permanent magnet rotor structure for an air suspension blower according to claim 4, wherein: the outer wall of the positioning tube (71) is fixed with a cutting (711), and a notch (712) matched with the cutting (711) is formed in the inner ring of the thrust disc (4).

6. The single impeller pull rod permanent magnet rotor structure for an air suspension blower according to claim 5, wherein: the other pull rod (3) far away from the thrust disc (4) is sleeved with an air-cooled impeller (9), one end of the air-cooled impeller (9) is sleeved outside a positioning pipe (71) of the corresponding shaft head (7), and the air-cooled impeller (9) is abutted to the end face of the corresponding shaft head (7).

7. The single impeller pull rod permanent magnet rotor structure for an air suspension blower according to claim 6, wherein: the plugging device is characterized in that the plugging device is made of the same titanium alloy material as the plugging device is made of the shaft head (7), and the pull rod is made of a nickel-based superalloy material.