Front bearing seat for a two-stage screw air compressor
By adding reinforcing ribs and thickened bosses to the front bearing housing, the problem of insufficient structural strength was solved, thereby improving stability and service life. Furthermore, temperature monitoring by a temperature sensor prevented bearing damage and reduced replacement costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU JIEBOTE INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-10-15
- Publication Date
- 2026-07-07
AI Technical Summary
The existing two-stage screw air compressor has insufficient front bearing housing structure strength, resulting in decreased stability. Furthermore, the bearing mounting groove is deformed and requires complete replacement, increasing costs.
A front bearing housing was designed. The structural strength was enhanced by setting reinforcing ribs and thickened bosses on the connecting plate, and a fixing seat was set on the inner side of the connecting plate to ensure stability. At the same time, a temperature sensor was installed on the connecting plate to monitor the temperature and prevent bearing damage.
The structural strength of the front bearing housing has been improved, which has prevented deformation of the bearing mounting groove, extended its service life, and ensured the stability of the whole machine through the fixed seat, thus reducing replacement costs.
Smart Images
Figure CN224469513U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of compressor front bearing housing, specifically a front bearing housing for a two-stage screw air compressor. Background Technology
[0002] A two-stage compressor is a mechanical device that compresses gas stage by stage through low-pressure and high-pressure cylinders. Its structural design effectively reduces the single-stage compression ratio and exhaust temperature. This equipment is widely used in the field of air compression in industrial production. One end of the two-stage screw air compressor is equipped with a first-stage bearing housing and a second-stage bearing housing, while the other end is equipped with an integral front bearing housing to install four bearings. These four bearings respectively mate with one end of the first-stage male rotor, the first-stage female rotor, the second-stage male rotor, and the second-stage female rotor.
[0003] Currently, the front bearing housing of two-stage screw air compressors has four bearing mounting slots. However, if the structural strength is insufficient, it will lead to a decrease in stability. Furthermore, if one bearing mounting slot deforms, the entire front bearing housing needs to be replaced because it is a one-piece structure, which increases costs. Therefore, there is an urgent need for an improved technology to solve this problem in the existing technology. Summary of the Invention
[0004] The purpose of this invention is to provide a front bearing housing for a two-stage screw air compressor to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a front bearing housing for a two-stage screw air compressor, comprising a front bearing housing body, the front bearing housing body including a connecting plate and a surrounding plate, the surrounding plate being provided on the outer side of the connecting plate, an upper boss being provided on the upper part of the outer side of the connecting plate, a lower boss being provided on the lower part of the outer side of the connecting plate, an annular boss being provided on the outer side of the connecting plate between the upper and lower bosses, an upper first bearing mounting groove and an upper second bearing mounting groove being provided on the upper boss of the connecting plate, a lower first bearing mounting groove and a lower second bearing mounting groove being provided on the lower boss of the connecting plate, a plurality of first reinforcing ribs being provided on the upper part of the outer side of the connecting plate at the upper boss, a second reinforcing rib being provided on each side of the upper boss of the outer side of the connecting plate, a plurality of third reinforcing ribs being provided on the lower part of the outer side of the connecting plate at the lower boss, and a plurality of third reinforcing ribs being provided on the outer side of the connecting plate at the lower boss. The upper end is provided with several fourth reinforcing ribs. The outer side of the connecting plate is provided with a fifth reinforcing rib on each side of the upper boss. The outer ends of the first, second, and fifth reinforcing ribs are all connected to the inner wall of the surrounding plate. The third and fourth reinforcing ribs are also connected to the outer wall of the annular boss. The bottom sides of the surrounding plate are provided with fixing seats, which are also connected to the bottom of the connecting plate. The inner side of the connecting plate is provided with an upper groove at the upper first bearing mounting groove and the upper second bearing mounting groove. The inner side of the connecting plate is provided with a lower groove at the lower first bearing mounting groove and the lower second bearing mounting groove. The inner side of the connecting plate is provided with a first thickened boss and a second thickened boss at the upper first bearing mounting groove and the upper second bearing mounting groove, respectively. The inner side of the connecting plate is provided with a third thickened boss and a fourth thickened boss at the lower first bearing mounting groove and the lower second bearing mounting groove, respectively.
[0006] Preferably, the present invention provides a front bearing housing for a two-stage screw air compressor, wherein the connecting plate is provided with a plurality of connecting holes evenly distributed around the periphery of the enclosure plate.
[0007] Preferably, the present invention provides a front bearing housing for a two-stage screw air compressor, wherein the end of the enclosure away from the connecting plate is provided with a plurality of screw holes.
[0008] Preferably, the present invention provides a front bearing housing for a two-stage screw air compressor, wherein a temperature sensor mounting platform is provided on the outer side of the connecting plate, and the temperature sensor mounting platform has a through hole.
[0009] Preferably, the present invention provides a front bearing housing for a two-stage screw air compressor, wherein the connecting plate is provided with a plurality of through oil holes on the inner side of the enclosure.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] (1) The upper first bearing mounting groove and the upper second bearing mounting groove are opened at the upper boss of the connecting plate, and the lower first bearing mounting groove and the lower second bearing mounting groove are opened at the lower boss of the connecting plate. The upper boss is provided with a first reinforcing rib, a second reinforcing rib and a third reinforcing rib, and the lower boss is provided with a fourth reinforcing rib and a fifth reinforcing rib. At the same time, the inner side of the connecting plate is provided with a thickened boss at each bearing mounting groove, thereby greatly improving the structural strength of the front bearing seat body, avoiding deformation of each bearing mounting groove during long-term use, and improving service life.
[0012] (2) A fixing seat is provided at the bottom of the enclosure, and the fixing seat is also connected to the connecting plate, so as to fix the two-stage screw air compressor at the front bearing seat and ensure the stability of the whole machine. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This is a front view structural diagram of the present invention;
[0015] Figure 3 For the appendix Figure 1 A schematic diagram of the rear view structure.
[0016] In the diagram: 1. Connecting plate; 2. Enclosure plate; 3. Upper boss; 4. Lower boss; 5. Annular boss; 6. First bearing mounting groove; 7. Upper second bearing mounting groove; 8. Lower first bearing mounting groove; 9. Lower second bearing mounting groove; 10. First reinforcing rib; 11. Second reinforcing rib; 12. Third reinforcing rib; 13. Fourth reinforcing rib; 14. Fifth reinforcing rib; 15. Fixing seat; 16. Upper groove; 17. Lower groove; 18. First thickened boss; 19. Second thickened boss; 20. Third thickened boss; 21. Fourth thickened boss; 22. Connecting hole; 23. Screw hole; 24. Temperature sensor mounting platform; 25. Oil hole. Detailed Implementation
[0017] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0018] It should be noted that in the description of this utility model, the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] Please see Figure 1-3 This utility model provides a technical solution: a front bearing housing for a two-stage screw air compressor, including a front bearing housing body, the front bearing housing body including a connecting plate 1 and a surrounding plate 2, the surrounding plate 2 is provided on the outer side of the connecting plate 1, and a plurality of connecting holes 22 are evenly opened on the periphery of the connecting plate 1, which are connected to the housing of the two-stage screw air compressor through the cooperation of the connecting holes and bolts with washers. A plurality of screw holes 23 are opened on the end of the surrounding plate 2 away from the connecting plate 1, so as to realize the fastening connection with the bearing housing cover plate by bolts. An upper boss 3 is provided on the upper part of the outer side of the connecting plate 1. A lower boss 4 is provided on the lower part of the outer side of the connecting plate 1. An annular boss 5 is provided on the outer side of the connecting plate 1 between the upper boss 3 and the lower boss 4. An upper first bearing mounting groove 6 and an upper second bearing mounting groove 7 are provided on the upper boss 3 of the connecting plate 1. A lower first bearing mounting groove 8 and a lower second bearing mounting groove 9 are provided on the lower boss 4 of the connecting plate 1. Several first reinforcing ribs 10 are provided on the upper end of the upper boss 3 on the outer side of the connecting plate 1. A second reinforcing rib 11 is provided on each side of the upper boss 3 on the outer side of the connecting plate 1. The lower end of the boss 3 is provided with several third reinforcing ribs 12. The outer side of the connecting plate 1, located above the lower boss 4, is provided with several fourth reinforcing ribs 13. The outer side of the connecting plate 1, located on both sides of the upper boss 3, is provided with a fifth reinforcing rib 14. The outer ends of the first reinforcing rib 10, the second reinforcing rib 11, and the fifth reinforcing rib 14 are all connected to the inner wall of the surrounding plate 2. The third reinforcing ribs 12 and the fourth reinforcing ribs 13 are also connected to the outer wall of the annular boss 5. Fixing seats 15 are provided on both sides of the bottom of the surrounding plate 2. The fixing seats 15 are also connected to the bottom of the connecting plate 1. The inner side of the connecting plate 1, located at the upper first bearing mounting point... An upper groove 16 is provided at groove 6 and the upper second bearing mounting groove 7. A lower groove 17 is provided on the inner side of the connecting plate 1 at the lower first bearing mounting groove 8 and the lower second bearing mounting groove 9. A first thickened boss 18 and a second thickened boss 19 are respectively provided on the inner side of the connecting plate 1 at the upper groove 16 and at the upper first bearing mounting groove 6 and the upper second bearing mounting groove 7. A third thickened boss 20 and a fourth thickened boss 21 are respectively provided on the inner side of the connecting plate 1 at the lower groove 17 and at the lower first bearing mounting groove 8 and the lower second bearing mounting groove 9.
[0020] A temperature sensor mounting platform 24 is also provided on the outer side of the connecting plate 1. The temperature sensor mounting platform 24 has through holes to install the temperature sensor, thereby enabling temperature monitoring inside the front bearing housing and preventing bearing damage due to excessive temperature. Several oil holes 25 are provided through the connecting plate 1 on the inner side of the enclosure 2 to allow oil from the two-stage screw air compressor housing to enter the front bearing housing.
[0021] Installation Method and Operating Principle: The front bearing housing body is manufactured using sand casting. The front bearing housing body consists of a connecting plate 1 and a surrounding plate 2, which are integrally formed. In use, the connecting plate 1 is connected to the corresponding end of the housing of the two-stage screw air compressor via the connecting holes 22 and bolts. At this time, the first-stage male rotor and the first-stage female rotor pass through the upper first bearing mounting groove 6 and the upper second bearing mounting groove 7, respectively, while the second-stage male rotor and the second-stage female rotor pass through the lower first bearing mounting groove 8 and the lower second bearing mounting groove 9, respectively. Next, two corresponding bearings are fitted onto the ends of the first-stage male rotor and the second-stage female rotor, and installed into the upper first bearing mounting groove 6 and the upper second bearing mounting groove 7, respectively. Similarly, two corresponding bearings are fitted onto the ends of the second-stage male rotor and the second-stage female rotor, and installed into the lower first bearing mounting groove 8 and the lower second bearing mounting groove 9, respectively. Finally, the temperature sensor is installed on the temperature sensor mounting platform 24, and the external sealing cover is bolted to the outer end of the surrounding plate 2, completing the installation. This utility model has a reasonable structure. The upper first bearing mounting groove 6 and the upper second bearing mounting groove 7 are opened at the upper boss 3 of the connecting plate 1, and the lower first bearing mounting groove 8 and the lower second bearing mounting groove 9 are opened at the lower boss 4 of the connecting plate 1. The upper boss 3 is surrounded by a first reinforcing rib 10, a second reinforcing rib 11 and a third reinforcing rib 12, and the lower boss 4 is surrounded by a fourth reinforcing rib 13 and a fifth reinforcing rib 14. At the same time, the inner side of the connecting plate 1 is provided with thickened bosses at each bearing mounting groove, which greatly improves the structural strength of the front bearing seat body, avoids deformation of each bearing mounting groove during long-term use, and improves service life. The bottom of the surrounding plate 2 is provided with a fixing seat 15, which is also connected to the connecting plate 1, thereby fixing the two-stage screw air compressor at the front bearing seat and ensuring the stability of the whole machine.
[0022] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.
[0023] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications and equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A front bearing housing for a two-stage screw air compressor, characterized in that: The front bearing housing body includes a connecting plate (1) and a surrounding plate (2). The connecting plate (1) is provided with the surrounding plate (2) on its outer side. The upper part of the outer side of the connecting plate (1) is provided with an upper boss (3), and the lower part of the outer side of the connecting plate (1) is provided with a lower boss (4). An annular boss (5) is provided on the outer side of the connecting plate (1) between the upper boss (3) and the lower boss (4). The connecting plate (1) is provided with an upper first bearing mounting groove (6) and an upper second bearing mounting groove (7) at the upper boss (3). The connecting plate (1) is provided with an upper first bearing mounting groove (6) and an upper second bearing mounting groove (7) at the lower boss (4). The platform (4) is provided with a lower first bearing mounting groove (8) and a lower second bearing mounting groove (9). The outer side of the connecting plate (1) is provided with a number of first reinforcing ribs (10) at the upper end of the upper boss (3). The outer side of the connecting plate (1) is provided with a second reinforcing rib (11) on each side of the upper boss (3). The outer side of the connecting plate (1) is provided with a number of third reinforcing ribs (12) at the lower end of the upper boss (3). The outer side of the connecting plate (1) is provided with a number of fourth reinforcing ribs (13) at the upper end of the lower boss (4). The outer side of the connecting plate (1) is provided with a number of fourth reinforcing ribs (13) at the upper end of the upper boss (4). A fifth reinforcing rib (14) is provided on each side of the platform (3). The outer ends of the first reinforcing rib (10), the second reinforcing rib (11), and the fifth reinforcing rib (14) are all connected to the inner wall of the surrounding plate (2). The third reinforcing rib (12) and the fourth reinforcing rib (13) are also connected to the outer wall of the annular boss (5). Fixing seats (15) are provided on both sides of the bottom of the surrounding plate (2). The fixing seats (15) are also connected to the bottom of the connecting plate (1). The inner side of the connecting plate (1) is provided with an upper groove (16) at the upper first bearing mounting groove (6) and the upper second bearing mounting groove (7). The inner side of the connecting plate (1) is provided with a lower end groove (17) at the lower end first bearing mounting groove (8) and the lower end second bearing mounting groove (9). The inner side of the connecting plate (1) is provided with a first thickened boss (18) and a second thickened boss (19) at the upper end first bearing mounting groove (6) and the upper end second bearing mounting groove (7), respectively. The inner side of the connecting plate (1) is provided with a third thickened boss (20) and a fourth thickened boss (21) at the lower end first bearing mounting groove (8) and the lower end second bearing mounting groove (9), respectively.
2. The front bearing housing for a two-stage screw air compressor according to claim 1, characterized in that: The connecting plate (1) is provided with several connecting holes (22) evenly distributed around the perimeter of the surrounding plate (2).
3. The front bearing housing for a two-stage screw air compressor according to claim 1, characterized in that: The enclosure (2) has several screw holes (23) at the end away from the connecting plate (1).
4. The front bearing housing for a two-stage screw air compressor according to claim 1, characterized in that: The outer side of the connecting plate (1) is also provided with a temperature sensor mounting platform (24), and the temperature sensor mounting platform (24) has through holes.
5. The front bearing housing for a two-stage screw air compressor according to claim 1, characterized in that: The connecting plate (1) is located inside the enclosure (2) and has several through-holes (25).