A new direct drive high-speed atomizer

Abstract

The utility model discloses a novel direct drive high -speed atomizer, including atomization drive motor and atomization disc, the main shaft of atomization drive motor one end is connected directly with atomization disc, the motor casing of atomization drive motor includes intermediate cylinder and bearing end cap, two are equipped with bearing end cap, and are fixed respectively setting in the both ends of intermediate cylinder, two bearing end caps all are equipped with the angular contact ball bearing of being connected with the main shaft in, two groups angular contact ball bearing all are preset with lubricating grease, angular contact ball bearing only relies on internal lubricating grease and realizes lubrication under the working condition. This atomizer has simple structure, low in cost and low failure rate and the advantages such as.

Description

Technical Field

[0001] This utility model relates to atomizers, specifically to a novel direct-drive high-speed atomizer. Background Technology

[0002] A high-speed centrifugal atomizer uses a prime mover to drive an atomizing wheel to rotate at high speed. The atomizing wheel generates a strong centrifugal force, which does work on the slurry and sprays it out through the nozzle of the atomizing wheel, thus achieving the purpose of slurry atomization. The increased surface area of ​​the atomized slurry is beneficial for mixing and reacting with other media in subsequent processes, and it can also be used for drying and pulverizing slurries.

[0003] Currently, most commonly used high-speed centrifugal atomizers employ a conventional motor that drives a wear-resistant atomizing wheel to rotate at high speed via a speed-increasing gear. This results in high noise and severe wear. Some also use belt drives, which have low transmission efficiency, leading to energy waste, and the belts are prone to aging and are inconvenient to maintain. Furthermore, high-speed centrifugal atomizers with gearbox speed-increasing mechanisms require a gearbox, its lubrication system, and a control and monitoring system, making the entire system complex and increasing overall manufacturing costs.

[0004] Currently, some high-speed centrifugal atomizers directly driven by high-speed permanent magnet synchronous motors or high-speed asynchronous motors have emerged. These atomizers directly connect the main shaft to the motor rotor, with the rotor driving the main shaft at high speed. Bearings are located at both ends of the main shaft (angular contact bearings at the upper end and needle roller bearings at the lower end). Existing high-speed centrifugal atomizers primarily use a flowing oil-air mixture to lubricate the bearings, resulting in good lubrication and a long bearing lifespan. However, this requires an oil-air supply system (e.g., an atomizer control cabinet disclosed in authorization announcement number CN222392644U), which is complex, costly, and has a high failure rate. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned problems and provide a new type of direct-drive high-speed atomizer, which has the advantages of simple structure, low cost and low failure rate.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A direct-drive high-speed atomizer includes an atomization drive motor and an atomization disk, wherein one end of the main shaft of the atomization drive motor is directly connected to the atomization disk;

[0008] The motor housing of the atomizing drive motor includes an intermediate cylinder and bearing end caps. There are two bearing end caps, which are fixedly installed at both ends of the intermediate cylinder. Each bearing end cap is equipped with an angular contact ball bearing connected to the main shaft. Both sets of angular contact ball bearings are pre-lubricated with grease. The angular contact ball bearings are lubricated only by the internal grease during operation.

[0009] In a preferred embodiment of this invention, each set of angular contact ball bearings includes two angular contact ball bearings, which can provide a sufficiently large rotational support force to ensure the normal operation of the spindle.

[0010] Furthermore, a separator is provided between the two angular contact ball bearings in the same group.

[0011] In a preferred embodiment of this utility model, a first inner bearing limiting component, a first outer bearing limiting component, and a first sealing cover are provided on both sides of a set of angular contact ball bearings away from the atomizing disc; the first inner bearing limiting component and the first outer bearing limiting component are respectively located on the inner and outer sides of the set of angular contact ball bearings.

[0012] Furthermore, the first inner bearing limiting assembly includes a first inner bearing limiting sleeve and a first inner bearing limiting cover. The first inner bearing limiting sleeve is sleeved on the outside of the spindle, and its two ends respectively abut against the inner side of the set of angular contact ball bearings and the stepped structure of the spindle. The first inner bearing limiting cover is sleeved on the outside of the first inner bearing limiting sleeve, and the first inner bearing limiting cover is fixedly connected to the bearing end cover corresponding to the set of angular contact ball bearings.

[0013] Furthermore, the first outer bearing limiting assembly includes a first outer bearing inner ring limiting ring and a first outer bearing outer ring limiting ring. The first outer bearing inner ring limiting ring is fixedly sleeved on the outside of the main shaft and is used to limit the inner ring of the set of angular contact ball bearings from the outside. The first outer bearing outer ring limiting ring is sleeved on the outside of the first outer bearing inner ring limiting ring and is used to limit the outer ring of the set of angular contact ball bearings from the outside.

[0014] Furthermore, the first sealing cap is fixedly connected to the outer side of the bearing end cap corresponding to the set of angular contact ball bearings.

[0015] Furthermore, multiple compression springs are provided between the first sealing cover and the outer ring limiting ring of the first outer bearing, with both ends of the compression springs abutting against the first sealing cover and the outer ring limiting ring of the first outer bearing, respectively. In this way, after the main shaft rotates at high speed for a long time, it generates high temperatures and slightly lengthens, causing a set of angular contact ball bearings away from the atomizing disc to move slightly outward. At this time, the multiple compression springs are compressed and undergo elastic compression deformation, adaptively providing movement space for this set of angular contact ball bearings. This allows the set of angular contact ball bearings to adjust their position as the main shaft rotates, effectively preventing the set of angular contact ball bearings from being damaged by the main shaft.

[0016] In a preferred embodiment of this utility model, a second inner bearing limiting component, a second outer bearing limiting component, and a second sealing cover are provided on both sides of a set of angular contact ball bearings near the atomizing disc. The second inner bearing limiting component and the second outer bearing limiting component are respectively located on the inner and outer sides of the set of angular contact ball bearings.

[0017] Furthermore, the second inner bearing limiting assembly includes a second inner bearing limiting sleeve and a second inner bearing limiting cover. The second inner bearing limiting sleeve is sleeved on the outside of the main shaft, and its two ends respectively abut against the inner side of the set of angular contact ball bearings and the stepped structure of the main shaft. The second inner bearing limiting cover is sleeved on the outside of the second inner bearing limiting sleeve, and the second inner bearing limiting cover is fixedly connected to the bearing end cover corresponding to the set of angular contact ball bearings.

[0018] Furthermore, the second outer bearing limiting assembly includes a second outer bearing inner ring limiting ring and a second outer bearing outer ring limiting ring. The second outer bearing inner ring limiting ring is fixedly sleeved on the outside of the main shaft and is used to limit the inner ring of the set of angular contact ball bearings from the outside. The second outer bearing outer ring limiting ring is sleeved on the outside of the second outer bearing inner ring limiting ring and is used to limit the outer ring of the set of angular contact ball bearings from the outside. The second outer bearing outer ring limiting ring is integrally formed with the bearing end cap corresponding to the set of angular contact ball bearings.

[0019] Furthermore, the second sealing cover is fixedly installed on the outside of the bearing end cover corresponding to the set of angular contact ball bearings. The second sealing cover covers the corresponding bearing end cover, the second outer bearing inner ring limiting ring and the second outer bearing outer ring limiting ring. One end of the main shaft passes through the second sealing cover and is connected to the atomizing disc.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The atomizer of this utility model uses lubricating grease to lubricate the angular contact ball bearing, eliminating the need for an additional lubricating oil supply system. This greatly simplifies the structure, reduces production costs, and controls the failure rate.

[0022] 2. The atomizer of this invention employs two sets of angular contact ball bearings, enabling both bearing positions to withstand both radial and axial forces, thereby extending bearing life. Existing technology uses oil-air lubrication, which, while superior to grease lubrication, uses angular contact ball bearings and needle roller bearings respectively for the main shaft. Needle roller bearings can only withstand radial forces, not axial forces. This invention, by employing grease lubrication, while less effective than existing oil-air lubrication, extends bearing life by replacing both sets of bearings with angular contact ball bearings. Since both bearing positions have better load-bearing capacity, this extends bearing life to the same level as existing oil-air lubrication, while also simplifying the lubrication structure, reducing cost, and lowering the failure rate. Attached Figure Description

[0023] Figure 1This is a cross-sectional view of the novel direct-drive high-speed atomizer of this utility model.

[0024] Figure 2 for Figure 1 A magnified view of X in the image.

[0025] Figure 3 for Figure 1 A magnified view of the Y-axis. Detailed Implementation

[0026] To enable those skilled in the art to fully understand the technical solution of this utility model, the present utility model will be further described below in conjunction with the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0027] Combination Figures 1-3 The novel direct-drive high-speed atomizer of this embodiment includes an atomizing drive motor and an atomizing disk 2. One end of the main shaft 1 of the atomizing drive motor is directly connected to the atomizing disk 2. The motor housing of the atomizing drive motor includes an intermediate cylinder 3 and bearing end caps 4. Two bearing end caps 4 are provided and are respectively fixedly installed at both ends of the intermediate cylinder 3. Each of the two bearing end caps 4 is provided with an angular contact ball bearing 5 connected to the main shaft 1. Both sets of angular contact ball bearings 5 ​​are pre-filled with lubricating grease. The angular contact ball bearings 5 ​​are lubricated only by the internal lubricating grease during operation. The inner wall of the bearing end cap 4 is a complete structure without lubrication channels.

[0028] Combination Figures 1-3 Each set of angular contact ball bearings 5 ​​includes two angular contact ball bearings 5, which can provide a sufficiently large rotational support force to ensure the normal operation of the spindle 1.

[0029] Furthermore, a separator 6 is provided between the two angular contact ball bearings 5 ​​in the same group.

[0030] Combination Figures 1-3 On both sides of a set of angular contact ball bearings 5 ​​away from the atomizing disc 2, there are a first inner bearing limiting assembly, a first outer bearing limiting assembly, and a first sealing cover 7; the first inner bearing limiting assembly and the first outer bearing limiting assembly are located on the inner and outer sides of the set of angular contact ball bearings 5, respectively.

[0031] Furthermore, the first inner bearing limiting assembly includes a first inner bearing limiting sleeve 8 and a first inner bearing limiting cover 9. The first inner bearing limiting sleeve 8 is sleeved on the outside of the main shaft 1. The two ends of the first inner bearing limiting sleeve 8 respectively abut against the inner side of the set of angular contact ball bearings 5 ​​and the stepped structure of the main shaft 1. The first inner bearing limiting cover 9 is sleeved on the outside of the first inner bearing limiting sleeve 8. The first inner bearing limiting cover 9 is fixedly connected to the bearing end cover 4 corresponding to the set of angular contact ball bearings 5.

[0032] Furthermore, the first outer bearing limiting assembly includes a first outer bearing inner ring limiting ring 10 and a first outer bearing outer ring limiting ring 11. The first outer bearing inner ring limiting ring 10 is fixedly sleeved on the outside of the main shaft 1 and is used to limit the inner ring of the set of angular contact ball bearings 5 ​​on the outside. The first outer bearing outer ring limiting ring 11 is sleeved on the outside of the first outer bearing inner ring limiting ring 10 and is used to limit the outer ring of the set of angular contact ball bearings 5 ​​on the outside.

[0033] Furthermore, the first sealing cover 7 is fixedly connected to the outer side of the bearing end cover 4 corresponding to the set of angular contact ball bearings 5.

[0034] Furthermore, multiple compression springs 12 are provided between the first sealing cover 7 and the first outer bearing outer ring limiting ring 11. The two ends of the compression springs 12 are respectively pressed against the first sealing cover 7 and the first outer bearing outer ring limiting ring 11. In this way, after the main shaft 1 rotates at high speed for a long time, it will generate high temperature and thus slightly lengthen. This will cause a set of angular contact ball bearings 5 ​​away from the atomizing disk 2 to move slightly outward. At this time, the multiple compression springs 12 are compressed and undergo elastic compression deformation, which adaptively provides movement space for the set of angular contact ball bearings 5. This allows the set of angular contact ball bearings 5 ​​to adjust its position as the main shaft 1 changes, which can effectively prevent the set of angular contact ball bearings 5 ​​from being damaged by the main shaft 1.

[0035] Combination Figures 1-3 A second inner bearing limiting assembly, a second outer bearing limiting assembly, and a second sealing cover 13 are provided on both sides of a set of angular contact ball bearings 5 ​​near the atomizing disc 2. The second inner bearing limiting assembly and the second outer bearing limiting assembly are located on the inner and outer sides of the set of angular contact ball bearings 5, respectively.

[0036] Furthermore, the second inner bearing limiting assembly includes a second inner bearing limiting sleeve 14 and a second inner bearing limiting cover 15. The second inner bearing limiting sleeve 14 is sleeved on the outside of the main shaft 1. The two ends of the second inner bearing limiting sleeve 14 respectively abut against the inner side of the set of angular contact ball bearings 5 ​​and the stepped structure of the main shaft 1. The second inner bearing limiting cover 15 is sleeved on the outside of the second inner bearing limiting sleeve 14. The second inner bearing limiting cover 15 is fixedly connected to the bearing end cover 4 corresponding to the set of angular contact ball bearings 5.

[0037] Furthermore, the second outer bearing limiting assembly includes a second outer bearing inner ring limiting ring 16 and a second outer bearing outer ring limiting ring 17. The second outer bearing inner ring limiting ring 16 is fixedly sleeved on the outside of the main shaft 1 and is used to limit the inner ring of the set of angular contact ball bearings 5 ​​from the outside. The second outer bearing outer ring limiting ring 17 is sleeved on the outside of the second outer bearing inner ring limiting ring 16 and is used to limit the outer ring of the set of angular contact ball bearings 5 ​​from the outside. The second outer bearing outer ring limiting ring 17 is integrally formed with the bearing end cap 4 corresponding to the set of angular contact ball bearings 5.

[0038] Furthermore, the second sealing cover 13 is fixedly installed on the outside of the bearing end cover 4 corresponding to the angular contact ball bearing 5. The second sealing cover 13 covers the corresponding bearing end cover 4, the second outer bearing inner ring limiting ring 16, and the second outer bearing outer ring limiting ring 17. One end of the main shaft 1 passes through the second sealing cover 13 and is connected to the atomizing disc 2.

[0039] The above are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above content. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A novel direct-drive high-speed atomizer, characterized in that, It includes an atomizing drive motor and an atomizing disk, wherein one end of the main shaft of the atomizing drive motor is directly connected to the atomizing disk; The motor housing of the atomizing drive motor includes an intermediate cylinder and bearing end caps. There are two bearing end caps, which are fixedly installed at both ends of the intermediate cylinder. Each bearing end cap is equipped with an angular contact ball bearing connected to the main shaft. Both sets of angular contact ball bearings are pre-lubricated with grease. The angular contact ball bearings are lubricated only by the internal grease during operation.

2. The novel direct-drive high-speed atomizer according to claim 1, characterized in that, Each set of angular contact ball bearings includes two angular contact ball bearings, and a separator is provided between the two angular contact ball bearings in the same set.

3. The novel direct-drive high-speed atomizer according to claim 1, characterized in that, A first inner bearing limiting assembly, a first outer bearing limiting assembly, and a first sealing cover are provided on both sides of a set of angular contact ball bearings away from the atomizing disc; the first inner bearing limiting assembly and the first outer bearing limiting assembly are respectively located on the inner and outer sides of the set of angular contact ball bearings.

4. The novel direct-drive high-speed atomizer according to claim 3, characterized in that, The first inner bearing limiting assembly includes a first inner bearing limiting sleeve and a first inner bearing limiting cover. The first inner bearing limiting sleeve is sleeved on the outside of the spindle, and its two ends respectively abut against the inner side of the set of angular contact ball bearings and the stepped structure of the spindle. The first inner bearing limiting cover is sleeved on the outside of the first inner bearing limiting sleeve, and the first inner bearing limiting cover is fixedly connected to the bearing end cover corresponding to the set of angular contact ball bearings.

5. The novel direct-drive high-speed atomizer according to claim 3, characterized in that, The first outer bearing limiting assembly includes a first outer bearing inner ring limiting ring and a first outer bearing outer ring limiting ring. The first outer bearing inner ring limiting ring is fixedly sleeved on the outside of the main shaft and is used to limit the inner ring of the set of angular contact ball bearings from the outside. The first outer bearing outer ring limiting ring is sleeved on the outside of the first outer bearing inner ring limiting ring and is used to limit the outer ring of the set of angular contact ball bearings from the outside.

6. The novel direct-drive high-speed atomizer according to claim 3, characterized in that, The first sealing cap is fixedly connected to the outer side of the bearing end cap corresponding to the set of angular contact ball bearings.

7. The novel direct-drive high-speed atomizer according to claim 5, characterized in that, Multiple compression springs are provided between the first sealing cover and the first outer bearing outer ring limiting ring, with the two ends of the compression springs respectively pressing against the first sealing cover and the first outer bearing outer ring limiting ring.

8. The novel direct-drive high-speed atomizer according to claim 1, characterized in that, A second inner bearing limiting assembly, a second outer bearing limiting assembly, and a second sealing cover are provided on both sides of a set of angular contact ball bearings near the atomizing disc. The second inner bearing limiting assembly and the second outer bearing limiting assembly are located on the inner and outer sides of the set of angular contact ball bearings, respectively.

9. The novel direct-drive high-speed atomizer according to claim 8, characterized in that, The second inner bearing limiting assembly includes a second inner bearing limiting sleeve and a second inner bearing limiting cover. The second inner bearing limiting sleeve is sleeved on the outside of the main shaft. The two ends of the second inner bearing limiting sleeve respectively abut against the inner side of the set of angular contact ball bearings and the stepped structure of the main shaft. The second inner bearing limiting cover is sleeved on the outside of the second inner bearing limiting sleeve. The second inner bearing limiting cover is fixedly connected to the bearing end cover corresponding to the set of angular contact ball bearings.

10. The novel direct-drive high-speed atomizer according to claim 9, characterized in that, The second outer bearing limiting assembly includes a second outer bearing inner ring limiting ring and a second outer bearing outer ring limiting ring. The second outer bearing inner ring limiting ring is fixedly sleeved on the outside of the main shaft and is used to limit the inner ring of the set of angular contact ball bearings from the outside. The second outer bearing outer ring limiting ring is sleeved on the outside of the second outer bearing inner ring limiting ring and is used to limit the outer ring of the set of angular contact ball bearings from the outside. The second outer bearing outer ring limiting ring is integrally formed with the bearing end cap corresponding to the set of angular contact ball bearings. The second sealing cover is fixedly installed on the outside of the bearing end cover corresponding to the set of angular contact ball bearings. The second sealing cover covers the corresponding bearing end cover, the second outer bearing inner ring limiting ring and the second outer bearing outer ring limiting ring. One end of the main shaft passes through the second sealing cover and is connected to the atomizing disc.

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