Small sliding bearing box for medium-speed heavy-load double-support centrifugal blower
By designing a small sliding bearing box for medium-speed and heavy-load double-support centrifugal blowers, the problems of bulky and complex assembly of sliding bearing boxes are solved, and lightweight, easy disassembly and assembly, low noise and high concentricity are achieved, thereby improving the stability and adaptability of the equipment.
Patent Information
- Application Number
- CN202422300728.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The sliding bearing box of the existing medium-speed heavy-load centrifugal blower has the problems of being bulky, high maintenance cost, complicated assembly and difficult to ensure concentricity.
The small sliding bearing box for medium-speed and heavy-load double-support centrifugal blowers is adopted. Through the design of supporting sliding bearings and thrust sliding bearings, combined with sealing structure and flange connection, it achieves lightweight, easy disassembly and assembly, high concentricity, reduces lubricating oil leakage, and reduces friction and noise.
It has achieved large load-bearing capacity, zero leakage of lubricating oil, easy installation and disassembly, stable operation, strong adaptability, low noise, suitable for harsh environments, and reduces maintenance costs and assembly difficulty.
Smart Images
Figure CN223374692U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bearing boxes for blowers, in particular to a small sliding bearing box for medium-speed heavy-load double-support centrifugal blowers. Background Art
[0002] A centrifugal blower is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine.
[0003] At present, centrifugal blowers have experienced nearly a hundred years of development, and various technologies have become mature and perfect. In today's market-oriented market, reducing product costs, improving product appearance, ensuring product stability and reliability, and easy maintenance are imperative efforts to improve market competitiveness. Conventional medium-speed and heavy-load fans use two forms of sliding bearing boxes: one is that the sliding bearing box seat and the lower half of the fan casing are cast into one piece. The disadvantage of this form is that the sliding bearing box body is large and bulky. Once the sliding bearing box seat is worn, the entire fan casing needs to be replaced, and the maintenance cost is too high; the other is that the sliding bearing box seat and the casing are connected with a flange stopper, and the bearing box is connected to the foundation with a foot. The disadvantage of this form is that the sliding bearing box body is large and bulky. During assembly, the concentricity must be adjusted by an experienced master to ensure accuracy, and disassembly is also very troublesome. Utility Model Content
[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a small sliding bearing box for a medium-speed heavy-load double-support centrifugal blower, which effectively solves the problems raised in the background technology.
[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a small sliding bearing box for a medium-speed and heavy-load double-support centrifugal blower, comprising a supporting sliding bearing, a first main shaft, a supporting bearing box seat, a supporting bearing box side cover and a supporting bearing box cover, wherein the supporting bearing box side cover is fixedly installed with the left side of the supporting bearing box cover through a first stop, the supporting bearing box seat is installed on the right side of the supporting bearing box cover, the first main shaft is transversely arranged in the supporting bearing box cover, and the right end of the first main shaft passes through the supporting bearing box seat, the supporting sliding bearing is also arranged in the supporting bearing box cover and installed on the first main shaft, the supporting bearing box side cover is equipped with a first process plug for measuring displacement holes and a second process plug for top shaft holes, the supporting bearing box cover is equipped with a third process plug and a fourth process plug for measuring vibration holes, the supporting bearing box cover is also equipped with a first vent pipe group, a first temperature measuring element, a first lifting screw and a first organic glass window, and the supporting bearing box seat is equipped with a first oil inlet matching flange and a first oil return port matching flange.
[0006] Preferably, the first stop is fixedly connected to the support bearing box cover by a first bolt, the first oil inlet matching flange and the first oil return port matching flange are locked and connected to the support bearing box seat by a second bolt and a third bolt respectively, and the first organic glass window is fixedly locked and connected to the support bearing box cover.
[0007] Preferably, the support bearing box cover and the support bearing box seat are positioned and installed via a first bearing box seal, and the support bearing box cover and the support bearing box seat are locked and fixed via a fifth bolt.
[0008] Preferably, the supporting sliding bearing is positioned and installed on the first main shaft through a first positioning block, and the supporting sliding bearing is positioned and installed on the supporting bearing box cover through a first sealing stop.
[0009] A small sliding bearing box for a medium-speed, heavy-load, double-support centrifugal blower also includes a thrust sliding bearing, a second main shaft, a thrust bearing box cover and a thrust bearing box seat, the thrust bearing box cover is fixedly installed on the upper side of the thrust bearing box seat, the thrust sliding bearing is positioned and installed on the second main shaft by a shaft shoulder, a second positioning block and a retaining ring, the retaining ring is locked and fixed to the thrust bearing box cover and the thrust bearing box seat by a sixth bolt, the left end of the second main shaft passes through the left side wall of the thrust bearing box seat, the thrust bearing box cover is installed with a second bleed pipe group, a second temperature measuring element, a process plug for a third vibration measuring hole and a process plug for a fourth vibration measuring hole by a second lifting screw, the thrust bearing box seat is installed with a second oil inlet matching flange by a seventh bolt, and the thrust bearing box seat is also installed with a second oil port matching flange by an eighth bolt, and the thrust bearing box cover is also installed with a second organic glass window by a ninth bolt.
[0010] Preferably, the thrust bearing box cover and the thrust bearing box seat are mutually locked and fixed by a tenth bolt, and a second bearing box seal and a third bearing box seal are provided between the thrust bearing box cover and the thrust bearing box seat. The second bearing box seal is positioned and installed with the thrust bearing box cover and the thrust bearing box seat through a second sealing stop, and the third bearing box seal is positioned and installed with the thrust bearing box cover and the thrust bearing box seat through a third sealing stop.
[0011] The technical effects and advantages of this utility model are:
[0012] 1. Large load-bearing capacity. Sliding bearings carry loads in a face-to-face manner, so there is relatively little oil leakage and they can carry large loads.
[0013] 2. Zero leakage of lubricating oil. The bearing box seal and the oil gear on the main shaft combine to seal the cavity, which can effectively prevent the leakage of lubricating oil.
[0014] 3. Miniaturization, no footing, easy to disassemble and assemble. The bearing box is small and does not store oil. After the cooling oil lubricates the sliding bearing, it is quickly discharged, with good heat dissipation performance. It does not require footing connection to the foundation, but only needs to be connected to the casing flange. It is easy to install and disassemble. The bearing box is light in weight, the casing flange bears a small load, and it is more stable to use.
[0015] 4. High concentricity. The flanges at both ends of the fan casing and the bearing box are processed as a whole to ensure concentricity. The bearing box is easy to install without repeated concentricity adjustment.
[0016] 5. Smooth operation. Since the friction coefficient of the sliding bearing is low, there is little friction and resistance during movement, which can maintain smooth high-speed operation.
[0017] 6. It has strong adaptability and is suitable for high-speed rotation and heavy load conditions. It has strong wear resistance and impact resistance and is suitable for relatively harsh working environments.
[0018] 7. Low noise, less friction when sliding and relatively low noise. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0020] Figure 1 This is a front structural diagram of the first embodiment of the present utility model;
[0021] Figure 2 This is a schematic diagram of the left side structure of the first embodiment of the present utility model;
[0022] Figure 3 This is a schematic diagram of the right side structure of the first embodiment of the present utility model;
[0023] Figure 4 This is a front structural diagram of the second embodiment of the present utility model;
[0024] Figure 5 This is a schematic diagram of the right side structure of the second embodiment of the present utility model;
[0025] Figure 6 This is a schematic diagram of the left side structure of the second embodiment of the present utility model.
[0026] In the figure: 1. first vent pipe group; 2. support bearing box cover; 3. support bearing box side cover; 4. first bolt; 5. first stopper; 6. first process plug; 7. second process plug; 8. first main shaft; 9. support sliding bearing; 10. second bolt; 11. first oil inlet matching flange; 12. third bolt; 13. first oil return port matching flange; 14. first temperature measuring element; 15. third process plug; 16. first sealing stopper; 17. first bearing box seal; 18. support bearing box seat; 19. first lifting screw; 20. first organic glass window; 21. fourth bolt; 22. fifth bolt; 23. fourth process plug; 24. first positioning block; 25. first Second vent pipe group; 26. Process plug for the third vibration measuring hole; 27. Thrust bearing box cover; 28. Second sealing stopper; 29. Second bearing box seal; 30. Shaft shoulder; 31. Second main shaft; 32. Thrust sliding bearing; 33. Thrust bearing box seat; 34. Second temperature measuring element; 35. Sixth bolt; 36. Retaining ring; 37. Third sealing stopper; 38. Third bearing box seal; 39. Seventh bolt; 40. Second oil inlet matching flange; 41. Eighth bolt; 42. Second oil inlet matching flange; 43. Second lifting screw; 44. Second plexiglass window; 45. Ninth bolt; 46. Tenth bolt; 47. Process plug for the fourth vibration measuring hole; 48. Second positioning block. DETAILED DESCRIPTION
[0027] Example 1
[0028] The utility model provides Figure 1-3 The small sliding bearing box for a medium-speed heavy-load double-support centrifugal blower shown in the figure includes a supporting sliding bearing 9, a first main shaft 8, a supporting bearing box seat 18, a supporting bearing box side cover 3 and a supporting bearing box cover 2. The supporting bearing box side cover 3 is fixedly installed with the left side of the supporting bearing box cover 2 through the first stop 5, the supporting bearing box seat 18 is installed on the right side of the supporting bearing box cover 2, the first main shaft 8 is horizontally arranged in the supporting bearing box cover 2, and the right end of the first main shaft 8 passes through the supporting bearing box seat 18. The supporting sliding bearing 9 is also arranged on the supporting bearing box. The bearing box cover 2 is supported and installed on the first main shaft 8. The first process plug 6 for measuring displacement holes and the second process plug 7 for top shaft holes are installed on the bearing box side cover 3. The third process plug 15 and the fourth process plug 23 for measuring vibration holes are installed on the bearing box cover 2. The first vent pipe group 1, the first temperature measuring element 14, the first lifting screw 19 and the first organic glass window 20 are also installed on the bearing box cover 2. The first oil inlet matching flange 11 and the first oil return port matching flange 13 are installed on the bearing box seat 18.
[0029] At the same time, the first stop 5 is fixedly connected to the support bearing box cover 2 by the first bolt 4, the first oil inlet matching flange 11 and the first oil return port matching flange 13 are locked and connected to the support bearing box seat 18 by the second bolt 10 and the third bolt 12 respectively, and the first organic glass window 20 is fixed and locked and connected to the support bearing box cover 2 by the fourth bolt 21.
[0030] In addition, the support bearing box cover 2 and the support bearing box seat 18 are positioned and installed through the first bearing box seal 17, and the support bearing box cover 2 and the support bearing box seat 18 are locked and fixed by the fifth bolt 22.
[0031] In addition, the supporting sliding bearing 9 is positioned and installed on the first main shaft 8 through the first positioning block 24 , and the supporting sliding bearing 9 is positioned and installed with the supporting bearing box cover 2 through the first sealing stop 16 .
[0032] Example 2
[0033] The utility model provides Figure 4-6 The small sliding bearing box for a medium-speed heavy-load double-support centrifugal blower shown in the figure includes a thrust sliding bearing 32, a second main shaft 31, a thrust bearing box cover 27 and a thrust bearing box seat 33. The thrust bearing box cover 27 is fixedly mounted on the upper side of the thrust bearing box seat 33. The thrust sliding bearing 32 is positioned and mounted on the second main shaft 31 through a shaft shoulder 30, a second positioning block 48 and a retaining ring 36. The retaining ring 36 is locked and fixed with the thrust bearing box cover 27 and the thrust bearing box seat 33 by a sixth bolt 35. The left end of the second main shaft 31 passes through the stop block 48. On the left side wall of the thrust bearing box seat 33, the second vent pipe group 25, the second temperature measuring element 34, the third vibration measuring hole process plug 26 and the fourth vibration measuring hole process plug 47 are installed on the thrust bearing box cover 27 through the second lifting screw 43, and the second oil inlet matching flange 40 is installed on the thrust bearing box seat 33 through the seventh bolt 39, and the second oil inlet matching flange 42 is also installed on the thrust bearing box seat 33 through the eighth bolt 41, and the second organic glass window 44 is also installed on the thrust bearing box cover 27 through the ninth bolt 45.
[0034] At the same time, the thrust bearing box cover 27 and the thrust bearing box seat 33 are locked and fixed to each other by the tenth bolt 46. A second bearing box seal 29 and a third bearing box seal 38 are provided between the thrust bearing box cover 27 and the thrust bearing box seat 33. The second bearing box seal 29 is positioned and installed with the thrust bearing box cover 27 and the thrust bearing box seat 33 through the second sealing stop 28, and the third bearing box seal 38 is positioned and installed with the thrust bearing box cover 27 and the thrust bearing box seat 33 through the third sealing stop 37.
[0035] Working principle of the utility model: The utility model has the characteristics of high speed, high load-bearing capacity, stable and reliable operation, low noise, high precision, small friction and wear, zero oil leakage, easy disassembly and assembly, miniaturization and light weight, beautiful appearance and easy maintenance.
[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A small sliding bearing box for a medium-speed, heavy-load, double-support centrifugal blower, characterized by: The invention comprises a supporting sliding bearing (9), a first main shaft (8), a supporting bearing box seat (18), a supporting bearing box side cover (3) and a supporting bearing box cover (2), wherein the supporting bearing box side cover (3) is fixedly installed with the left side of the supporting bearing box cover (2) through a first stop (5), the supporting bearing box seat (18) is installed on the right side of the supporting bearing box cover (2), the first main shaft (8) is transversely arranged in the supporting bearing box cover (2), and the right end of the first main shaft (8) passes through the supporting bearing box seat (18), the supporting sliding bearing (9) is also arranged in the supporting bearing box cover (2) and installed on the first main shaft (8). On a main shaft (8), a first process plug (6) for measuring displacement holes and a second process plug (7) for top shaft holes are installed on the support bearing box side cover (3), a third process plug (15) and a fourth process plug (23) for measuring vibration holes are installed on the support bearing box cover (2), a first vent pipe group (1), a first temperature measuring element (14), a first lifting screw (19) and a first organic glass window (20) are also installed on the support bearing box cover (2), and a first oil inlet matching flange (11) and a first oil return port matching flange (13) are installed on the support bearing box seat (18).
2. The small sliding bearing box for a medium-speed, heavy-load, double-support centrifugal blower according to claim 1, characterized in that: The first stopper (5) is fixedly connected to the support bearing box cover (2) via a first bolt (4); the first oil inlet matching flange (11) and the first oil return port matching flange (13) are locked and connected to the support bearing box seat (18) via a second bolt (10) and a third bolt (12) respectively; and the first organic glass window (20) is fixedly locked and connected to the support bearing box cover (2) via a fourth bolt (21).
3. The small sliding bearing box for a medium-speed, heavy-load, double-support centrifugal blower according to claim 2, characterized in that: The support bearing box cover (2) and the support bearing box seat (18) are positioned and installed via a first bearing box seal (17), and the support bearing box cover (2) and the support bearing box seat (18) are locked and fixed via a fifth bolt (22).
4. The small sliding bearing box for a medium-speed, heavy-load, double-support centrifugal blower according to claim 3, characterized in that: The supporting sliding bearing (9) is positioned and installed on the first main shaft (8) through a first positioning block (24), and the supporting sliding bearing (9) is positioned and installed with the supporting bearing box cover (2) through a first sealing stop (16).
5. A small sliding bearing box for a medium-speed, heavy-load, double-support centrifugal blower, characterized by: The thrust bearing (32) is fixedly mounted on the upper side of the thrust bearing housing seat (33), and the thrust bearing housing seat (33) is provided. The thrust bearing housing seat (27) is fixedly mounted on the upper side of the thrust bearing housing seat (33). The thrust bearing (32) is positioned and mounted on the second main shaft (31) through a shaft shoulder (30), a second positioning block (48) and a retaining ring (36). The retaining ring (36) is locked and fixed with the thrust bearing housing seat (27) and the thrust bearing housing seat (33) through a sixth bolt (35). The left end of the second main shaft (31) passes through the left side of the thrust bearing housing seat (33). The thrust bearing box cover (27) is provided with a second vent pipe assembly (25), a second temperature measuring element (34), a third vibration measuring hole process plug (26) and a fourth vibration measuring hole process plug (47) via a second lifting screw (43); a second oil inlet matching flange (40) is provided on the thrust bearing box seat (33) via a seventh bolt (39); a second oil port matching flange (42) is provided on the thrust bearing box seat (33) via an eighth bolt (41); and a second organic glass window (44) is provided on the thrust bearing box cover (27) via a ninth bolt (45).
6. The small sliding bearing box for a medium-speed, heavy-load, double-support centrifugal blower according to claim 5, characterized in that: The thrust bearing box cover (27) and the thrust bearing box seat (33) are locked and fixed to each other by a tenth bolt (46). A second bearing box seal (29) and a third bearing box seal (38) are provided between the thrust bearing box cover (27) and the thrust bearing box seat (33). The second bearing box seal (29) is positioned and installed with the thrust bearing box cover (27) and the thrust bearing box seat (33) through the second sealing stop (28). The third bearing box seal (38) is positioned and installed with the thrust bearing box cover (27) and the thrust bearing box seat (33) through the third sealing stop (37).