CN219035116U

CN219035116U - Rotor structure of air suspension centrifugal blower

Info

Publication number: CN219035116U
Application number: CN202223052301.8U
Authority: CN
Inventors: 郑荣军; 王爱花
Original assignee: Xi'an Sinos Mechanical Equipment Co ltd
Current assignee: Xi'an Sinos Mechanical Equipment Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-05-16
Anticipated expiration: 2032-11-16

Abstract

The utility model provides a rotor structure of an air suspension centrifugal blower, which comprises a permanent magnetic core body, wherein both ends of the permanent magnetic core body are fixedly connected with connectors, one end of each connector, which is far away from the permanent magnetic core body, is provided with an insertion hole, one end of each connector, which is close to the permanent magnetic core body, is provided with a connecting groove communicated with the insertion hole, one end of each connecting groove is provided with a plurality of first limit grooves, each insertion hole is inserted with a pull rod, one end of each pull rod, which is positioned at each connecting groove, is provided with a first limit key corresponding to the corresponding first limit groove, and the side wall of each insertion hole is provided with an entering groove matched with the corresponding first limit key; the pull rod positioned at the left end of the permanent magnet core body is sequentially sleeved with a first shaft head, a balance disc and an impeller, and a first nut is arranged at the left side of the impeller; the pull rod positioned at the right end of the permanent magnet core body is sequentially sleeved with a shaft head II and an air-cooled impeller, and a nut II is arranged at the left side of the air-cooled impeller; the inner walls of the impeller and the air-cooled impeller are respectively provided with a second limit groove, and the side walls of the two pull rods are provided with second limit keys corresponding to the second limit grooves. The utility model can effectively reduce the economic cost of rotor maintenance during maintenance.

Description

Rotor structure of air suspension centrifugal blower

Technical Field

The utility model belongs to the field of air suspension centrifugal blowers, and particularly relates to a rotor structure of an air suspension centrifugal blower.

Background

Compared with the traditional Roots blower, the air suspension centrifugal blower has the advantages of energy saving efficiency improvement of 30-50%, low noise and small volume. When the air suspension fan rotor runs, because the air pressure difference exists between the front and the rear of the centrifugal impeller, the whole rotor has an axial force acting on the rotor, if the structure constraint is not present, the rotor collides with static parts such as a shell and the like, therefore, the rotor has a balance disc, the axial force is balanced by the interaction force of the thrust bearing and the balance disc, and the stable running of the rotor is ensured. The air thrust bearings are arranged on the two sides of the balance disc, and the gap between the bearings and the balance disc is very small, so that the balance disc is in physical contact with the thrust bearings when the whole rotor is started, abrasion can be caused to the balance disc, and the service life of the balance disc is influenced. In addition, most of the current air suspension centrifugal blower rotors are of integrated structures, and the problems that all parts of the rotors are worn or the rotor permanent magnet core is difficult to replace due to heating and demagnetizing exist.

Disclosure of Invention

The utility model aims to provide a rotor structure of an air suspension centrifugal blower, which aims to solve the problems in the prior art.

In order to achieve the above purpose, the utility model provides a rotor structure of an air suspension centrifugal blower, which comprises a permanent magnet core body, wherein both ends of the permanent magnet core body are fixedly connected with connectors, one end of each connector, which is far away from the permanent magnet core body, is provided with an insertion hole, one end of each connector, which is close to the permanent magnet core body, is provided with a connecting groove communicated with the insertion hole, the diameter of each connecting groove is larger than that of each connecting hole, one end of each connecting groove, which is close to the insertion hole, is provided with a plurality of first limit grooves, a pull rod is inserted into each insertion hole, one end of each pull rod, which is positioned at each connecting groove, is provided with a first limit key corresponding to the corresponding first limit groove, and the side wall of each insertion hole is provided with an entering groove matched with the corresponding first limit key;

the pull rod at the left end of the permanent magnet core body is sequentially sleeved with a first shaft head, a balance disc and an impeller, a first nut is arranged at the left side of the impeller, and the first nut is in threaded connection with the pull rod;

the pull rod positioned at the right end of the permanent magnet core body is sequentially sleeved with a second shaft head and an air-cooled impeller, a second nut is arranged on the left side of the air-cooled impeller, and the second nut is in threaded connection with the pull rod;

the impeller and the inner wall of the air-cooled impeller are both provided with a second limiting groove, and the side walls of the two pull rods are provided with a second limiting key corresponding to the second limiting groove.

Furthermore, thrust bearings are arranged on two sides of the balance disc, and are sleeved on the pull rod.

Further, the outside of the balance disc is plated with a wear-resistant layer.

Further, a first locking sleeve is arranged on the right side of the first shaft head and is in threaded connection with a pull rod at the left end of the permanent magnet core body, a second locking sleeve is arranged on the left side of the second shaft head and is in threaded connection with the pull rod at the right end of the permanent magnet core body.

The utility model has the advantages that:

1. the rotor structure of the air suspension centrifugal blower provided by the utility model has the advantages that the rotor is assembled in a split mode, all parts can be split, the performance of each part can be replaced during maintenance, and the economic cost of rotor maintenance is reduced.

2. The utility model provides a rotor structure of an air suspension centrifugal blower, which can limit a pull rod by arranging a first limit key and a first limit groove, prevent the pull rod from rotating relative to a connector, limit an impeller and an air cooling impeller by arranging a second limit key and a second limit groove, and prevent the impeller and the air cooling impeller from rotating relative to the pull rod, thereby avoiding loosening of a first nut and a second nut when the nut is used, and ensuring the reliability of the rotor.

3. When the rotor is started, the balance disc is contacted with the air thrust bearing, and the balance disc can be static or rotate in a smaller amplitude relative to the air thrust bearing through the two thrust bearings, so that the balance disc can be effectively prevented from being worn, and the service life of the balance disc is prolonged.

The utility model will now be described in detail with reference to the drawings and examples.

Drawings

Fig. 1 is a schematic view of the overall structure of the present utility model.

Fig. 2 is a schematic structural view of the tie rod.

Fig. 3 is a cross-sectional view at A-A in fig. 2.

Fig. 4 is a schematic structural view of the connector at a first view angle.

Fig. 5 is a schematic structural view of the connector at a second view angle.

Reference numerals illustrate: 1. a permanent magnet core body; 2. a connector; 3. an insertion hole; 4. a connecting groove; 5. a first limit groove; 6. a pull rod; 7. a first limit key; 8. entering a groove; 9. the first shaft head; 10. a balancing disk; 11. an impeller; 12. a first nut; 13. a second shaft head; 14. an air-cooled impeller; 15. a second nut; 16. a limit key II; 17. a thrust bearing; 18. a first locking sleeve; 19. and a second locking sleeve.

Detailed Description

The following detailed description, structural features and functions of the present utility model are provided with reference to the accompanying drawings and examples in order to further illustrate the technical means and effects of the present utility model to achieve the predetermined objects.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "aligned," "overlapping," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operate in a specific orientation, and therefore should not be construed as limiting the present utility model.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" may include one or more such features, either explicitly or implicitly; in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

Example 1

The embodiment provides a rotor structure of an air suspension centrifugal blower as shown in fig. 1-5, wherein the rotor is of a split structure and comprises a permanent magnetic core body 1, two ends of the permanent magnetic core body 1 are fixedly connected with a connector 2, one end of the connector 2, which is far away from the permanent magnetic core body 1, is provided with an insertion hole 3, one end of the connector 2, which is close to the permanent magnetic core body 1, is provided with a connecting groove 4 communicated with the insertion hole 3, the diameter of the connecting groove 4 is larger than that of the connecting hole, one end of the connecting groove 4, which is close to the insertion hole 3, is provided with a plurality of limiting grooves I5, specifically, the number of the limiting grooves I5 is two, and the axis of the limiting grooves I5 is symmetrical, the insertion hole 3 is inserted with a pull rod 6, one end of the pull rod 6, which is positioned at one end of the connecting groove 4, is provided with a limiting key I7 corresponding to the limiting groove I5, can prevent the pull rod 6 from rotating relative to the connector 2 through the matching of the limiting key I7, and the side wall of the insertion hole 3 is provided with an entering groove 8 matched with the limiting key I7; when the pull rod 6 is installed, the first limit key 7 at the end part of the pull rod 6 enters the connecting groove 4 through the entering groove 8, and then the pull rod 6 is rotated, so that the first limit key 7 is embedded into the first limit groove 5, and other parts can be assembled.

The pull rod 6 positioned at the left end of the permanent magnet core body 1 is sequentially sleeved with a first shaft head 9, a balance disc 10 and an impeller 11, a first nut 12 is arranged at the left side of the impeller 11, the first nut 12 is in threaded connection with the pull rod 6, the first shaft head 9, the balance disc 10 and the impeller 11 can be pressed and fixed by tightening the first nut 12, and when each part is replaced, the first nut 12 is detached, so that the disassembly is convenient;

the pull rod 6 positioned at the right end of the permanent magnet core body 1 is sequentially sleeved with the second shaft head 13 and the air-cooled impeller 14, a second nut 15 is arranged at the left side of the air-cooled impeller 14, the second nut 15 is in threaded connection with the pull rod 6, the second shaft head 13 and the air-cooled impeller 14 can be pressed and fixed by tightening the second nut 15, and when each part is replaced, the second nut 15 is detached, so that the disassembly is convenient;

the impeller 11 and the inner wall of the air-cooled impeller 14 are provided with limit grooves II, and specifically, the number of the limit grooves is two, the side walls of the pull rods 6 are provided with limit keys II 16 corresponding to the limit grooves II, the limit keys II and the limit grooves II are arranged to limit the impeller 11 and the air-cooled impeller 14, the impeller 11 and the air-cooled impeller 14 are prevented from rotating relative to each other, the first nut 12 and the second nut 15 can be prevented from loosening during use, and the reliability of the rotor is guaranteed.

Further, the pull rod 6 is in a step shape, and the second limit key is located on the side wall of the left part of the pull rod 6.

Furthermore, thrust bearings 17 are respectively arranged at two sides of the balance disc 10, the thrust bearings 17 are sleeved on the pull rod 6, the two thrust bearings 17 can clamp the balance disc 10 under the action of the first nut 12, and the balance disc 10 is in clearance fit with the pull rod 6, so that the balance disc 10 can rotate freely relative to the pull rod 6. When the rotor starts, when the balance disc 10 is contacted with the air thrust bearing, the balance disc 10 can be static or rotate in a smaller amplitude relative to the air thrust bearing through the two thrust bearings 17, so that the balance disc 10 can be effectively prevented from being worn, and the service life of the balance disc 10 is prolonged.

Further, the balance disc 10 is made of martensitic precipitation hardening stainless steel, the material is subjected to forging and heat treatment, a wear-resistant layer is plated on the outer side of the balance disc 10, the surface roughness ra=0.4 of the wear-resistant layer is specifically a chromium layer, and the wear resistance of the balance disc 10 can be improved through the chromium layer, so that the service life of the balance disc 10 can be prolonged.

Further, a first locking sleeve 18 is arranged on the right side of the first shaft head 9, the first locking sleeve 18 is in threaded connection with the pull rod 6 at the left end of the permanent magnet core body 1, and the pull rod 6 at the left end can be fixed on the connector 2 by screwing the first locking sleeve 18, so that the installation of subsequent parts is facilitated; the left side of spindle nose two 13 is equipped with lock sleeve two 19, lock sleeve two 19 and permanent magnetic core body 1 right-hand member's pull rod 6 threaded connection can be fixed on connector 2 with the pull rod 6 of right-hand member through tightening lock sleeve two 19 to the installation of follow-up part of being convenient for. Specifically, the connector 2 is in a ladder shape, the first shaft head 9 and the second shaft head 13 are sleeved on the corresponding connector 2, an installation space is provided for the first locking sleeve 18 between the first shaft head 9 and the connector 2, and an installation space is provided for the second locking sleeve 19 between the second shaft head 13 and the connector 2.

In summary, the rotor structure of the air suspension centrifugal blower provided by the utility model not only can split each component of the rotor under the condition of ensuring the reliability of the rotor, but also can replace the performance of each component during maintenance, thereby reducing the economic cost of rotor maintenance, and effectively prolonging the service life of the balance disc 10.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims

1. The utility model provides a rotor structure of air suspension centrifugal blower, includes permanent magnet core (1), its characterized in that: the permanent magnet core comprises a permanent magnet core body (1), wherein two ends of the permanent magnet core body (1) are fixedly connected with connectors (2), an inserting hole (3) is formed in one end, far away from the permanent magnet core body (1), of each connector (2), a connecting groove (4) communicated with the inserting hole (3) is formed in one end, close to the inserting hole (3), of each connecting groove (4), a plurality of limiting grooves (5) are formed in one end, close to the inserting hole (3), of each connecting groove (4), a pull rod (6) is inserted into each inserting hole (3), a limiting key (7) corresponding to each limiting groove (5) is formed in one end, located in each connecting groove (4), of each connecting groove (2), and an entering groove (8) matched with each limiting key (7) is formed in the side wall of each inserting hole (3).

The pull rod (6) positioned at the left end of the permanent magnet core body (1) is sequentially sleeved with a first shaft head (9), a balance disc (10) and an impeller (11), a first nut (12) is arranged at the left side of the impeller (11), and the first nut (12) is in threaded connection with the pull rod (6);

the pull rod (6) positioned at the right end of the permanent magnet core body (1) is sequentially sleeved with a second shaft head (13) and an air-cooled impeller (14), a second nut (15) is arranged at the left side of the air-cooled impeller (14), and the second nut (15) is in threaded connection with the pull rod (6);

the impeller (11) and the inner wall of the air-cooled impeller (14) are respectively provided with a second limit groove, and the side walls of the two pull rods (6) are respectively provided with a second limit key (16) corresponding to the second limit grooves.

2. A rotor structure of an air suspension centrifugal blower as claimed in claim 1, wherein: thrust bearings (17) are arranged on two sides of the balance disc (10), and the thrust bearings (17) are sleeved on the pull rod (6).

3. A rotor structure of an air suspension centrifugal blower according to claim 1 or 2, wherein: the outside of the balance disc (10) is plated with a wear-resistant layer.

4. A rotor structure of an air suspension centrifugal blower according to claim 1 or 2, wherein: the right side of the first shaft head (9) is provided with a first locking sleeve (18), the first locking sleeve (18) is in threaded connection with the pull rod (6) at the left end of the permanent magnet core body (1), the left side of the second shaft head (13) is provided with a second locking sleeve (19), and the second locking sleeve (19) is in threaded connection with the pull rod (6) at the right end of the permanent magnet core body (1).

5. A rotor structure of an air suspension centrifugal blower as claimed in claim 1, wherein: the number of the first limit keys (7) and the second limit keys (16) on each pull rod (6) is two.