Sealing water cooling device for rotating shaft of dynamic equipment
By designing a sealed water cooling device on the rotating shaft of the moving equipment, using waterway enclosures, partitions and multiple sealing structures, the problem of difficulty in sealing and cooling under high temperature conditions is solved, and efficient water cooling and sealing is achieved, extending service life and improving operating efficiency.
Patent Information
- Application Number
- CN202421451484.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-06-24
AI Technical Summary
The sealing and cooling of the rotating shaft of the moving equipment under high temperature conditions (≥800℃), resulting in high temperature inside the shaft, poor sealing and short service life.
A sealed water cooling device is designed to form a cooling water cavity by installing a water circuit panel and a water hole on the center side of the rotating shaft, and efficient water cooling and sealing is achieved using the inner and outer water circuit partitions on the bearing seat and a variety of sealing structures (such as circular rubber seals, skeleton oil seals, and packs).
It realizes an effective water cooling process inside and outside the shaft, ensures good sealing, improves the operating efficiency of the rotating shaft, extends the service life, and has the advantages of high temperature and dust resistance.
Smart Images
Figure CN222823720U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of application of rotating shafts of moving equipment, in particular to a sealed water cooling device for rotating shafts of moving equipment. Background Art
[0002] The sealing of rotating shafts of moving equipment is mostly achieved by extrusion deformation of rubber. However, for moving equipment working at high temperatures, such as equipment working in the furnace of an electric furnace (≥800℃), rubber is not resistant to high temperatures. Taking fluororubber, which has the best high-temperature resistance among rubbers, as an example, its maximum operating temperature does not exceed 200℃. Therefore, simple rubber seals cannot meet the use requirements. At the same time, due to the high temperature of the rotating shaft, it cannot be cooled down in time and effectively, and the shaft components are usually easily damaged by overheating, which ultimately leads to a reduction in the service life of the shaft structure and unchanged maintenance, resulting in low overall efficiency of the shaft. Utility Model Content
[0003] The utility model provides a sealed water cooling device for a rotating shaft of a moving device to solve the problems existing in the above background.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A sealed water cooling device for a rotating shaft of a moving equipment comprises a rotating shaft, a water channel enclosure plate is covered at the center of the outer side of the rotating shaft, a plurality of second water holes are opened on the circumferential side of the water channel enclosure plate, and a plurality of first water holes are opened on the side wall of the rotating shaft corresponding to the second water holes, bearing seats are symmetrically fixed on both sides of the rotating shaft, a plurality of bearings are arranged in the bearing seats, an inner water channel baffle plate of the bearing seat is fixed on the circumferential side of the bearing seat, an outer water channel baffle plate of the bearing seat is fixed on the outer circumferential side of the inner water channel baffle plate of the bearing seat, a plurality of packings are also fixed between the bearing seat and the rotating shaft, a plurality of third water holes are evenly distributed on the inner water channel baffle plate of the bearing seat, a fourth water hole is also opened on the outer water channel baffle plate of the bearing seat, and an end cover is also provided on the end of the rotating shaft away from the outer water channel baffle plate of the bearing seat.
[0006] Furthermore, a bearing cover is clamped on the inner side of the bearing seat, and a circular rubber sealing ring is clamped between the bearing cover and the rotating shaft.
[0007] Furthermore, a skeleton oil seal is clamped between the bearing seat and the packing, close to the rotating shaft, a support ring is clamped on the side of the skeleton oil seal, and a skeleton oil seal gasket is also clamped on the side of the support ring.
[0008] Furthermore, a disc spring is provided on the side of the packing and between the bearing seat and the rotating shaft, and a packing gland is provided on the side of the disc spring close to the end of the rotating shaft.
[0009] Furthermore, a bearing seat side cover plate is also provided on the circumferential side of the end cover.
[0010] The utility model has the following beneficial effects:
[0011] The utility model provides a sealed water cooling device for a rotating shaft of a moving equipment, which is mainly composed of a rotating shaft, a water channel enclosure, a partition, a bearing cover, a sealing ring, an end cover and a water through hole. A water channel enclosure with a water through hole is installed on the center side of the rotating shaft, and inner and outer water channel partitions of a bearing seat are installed on both sides of the rotating shaft to form a cooling water cavity, and then the water through holes are matched to allow cooling water to enter the rotating shaft from the water through holes of the water channel enclosure during the rotation of the bearing, and then be discharged through the cooling water cavity, thereby achieving an effective water cooling process inside and outside the rotating shaft, while ensuring a good seal on the inside of the rotating shaft, thereby improving the overall efficiency of the rotating shaft operation, and solving the problem that during the use of the rotating shaft of the moving equipment, due to the influence of high temperature, conventional rubber extrusion seals are difficult to effectively achieve sealing and cooling in the shaft, resulting in high temperature in the shaft and poor sealing, which ultimately causes a short service life of the rotating shaft.
[0012] The utility model ensures the reliable operation of the rotating shaft body and bearings under high temperature conditions (≥800°C) by cooling the rotating shaft with water inside and outside and by the reasonable arrangement of three seals: a circular rubber seal ring, a skeleton oil seal and a packing, and prevents the cooling water from overflowing. The utility model has the advantages of compact structure, long service life, easy maintenance, high temperature resistance and dust resistance. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model.
[0014] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model.
[0015] The meanings of the reference numerals are as follows:
[0016] 1. Rotating shaft; 2. Water channel enclosure; 3. Bearing cover; 4. Round rubber sealing ring; 5. Bearing seat; 6. Water channel baffle inside the bearing seat; 7. Water channel baffle outside the bearing seat; 8. Bearing seat side cover; 9. Bearing; 10. Skeleton oil seal; 11. Support ring; 12. Skeleton oil seal gasket; 13. Packing; 14. Disc spring; 15. Packing gland; 16. End cover; 17. First water hole; 18. Second water hole; 19. Third water hole; 20. Fourth water hole. DETAILED DESCRIPTION
[0017] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0018] like Figure 1-2As shown, a sealed water cooling device for a rotating shaft of a moving equipment comprises a rotating shaft 1, a waterway enclosure 2 is covered at the center of the outer side of the rotating shaft 1, a plurality of second water holes 18 are opened on the circumferential side of the waterway enclosure 2, and a plurality of first water holes 17 are opened on the side wall of the rotating shaft 1 corresponding to the second water holes 18, bearing seats 5 are symmetrically fixed on both sides of the rotating shaft 1, a plurality of bearings 9 are arranged in the bearing seats 5, an inner waterway baffle 6 of the bearing seat is fixed on the circumferential side of the bearing seat 5, an outer waterway baffle 7 of the bearing seat is fixed on the outer circumferential side of the inner waterway baffle 6 of the bearing seat, a plurality of packings 13 are also fixed between the bearing seat 5 and the rotating shaft 1, a plurality of third water holes 19 are evenly distributed on the inner waterway baffle 6 of the bearing seat, a fourth water hole 20 is also opened on the outer waterway baffle 7 of the bearing seat, and an end cover 16 is also provided at the end of the rotating shaft 1 away from the outer waterway baffle 7 of the bearing seat.
[0019] A bearing cover 3 is clamped on the inner side of the bearing seat 5 , and a circular rubber sealing ring 4 is clamped between the bearing cover 3 and the rotating shaft 1 .
[0020] A skeleton oil seal 10 is clamped between the bearing seat 5 and the packing 13 close to the rotating shaft 1 , a support ring 11 is clamped on the side of the skeleton oil seal 10 , and a skeleton oil seal gasket 12 is also clamped on the side of the support ring 11 .
[0021] A disc spring 14 is provided on the side of the packing 13 and between the bearing seat 5 and the rotating shaft 1 . A packing gland 15 is provided on one side of the disc spring 14 close to the end of the rotating shaft 1 .
[0022] The circumferential side of the end cover 16 is also provided with a bearing seat side cover plate 8 .
[0023] During specific application of the utility model, the moving equipment drives the bearing seat 5 to perform low-speed rotation through the tapered roller bearing 9. After being circulated and cooled by the static equipment, the cooling water enters the left inner side of the rotating shaft 1 through the waterway enclosure 2 welded to the static equipment on the left side of the rotating shaft 1 and the first water through hole 17, and then enters the waterway partition 6 on the inner side of the left bearing seat, and then enters the waterway partition 7 on the outer side of the left bearing seat through the third water through hole 19, and finally enters the moving equipment welded thereto through the fourth water through hole 20 of the waterway partition 7 on the outer side of the bearing seat for circulating water cooling. After the cooling water enters the moving equipment for circulation, it enters the waterway partition 7 on the outer side of the right bearing seat, and then enters the waterway partition 6 on the inner side of the right bearing seat, and then enters the right inner side of the rotating shaft 1, and then enters the static equipment through the first water through hole 17 of the rotating shaft 1 and the waterway enclosure 2 welded to the static equipment, thereby completing the circulating cooling of the inner and outer sides of the rotating shaft 1.
[0024] The bearing cover 3 is used to limit the axial displacement of the bearing 9 and prevent the axial movement of the bearing. The outer ring of the bearing cover 3 is provided with an external thread, which is matched with the internal thread on the bearing seat 5 to be connected and fixed.
[0025] The circular rubber sealing ring 4 is used to seal the bearing 9 chamber to prevent the lubricating oil from overflowing. The circular rubber sealing ring 4 is placed in the inner ring groove of the bearing cover 3 and is used for radial sealing between the bearing cover 3 and the rotating shaft 1. The circular rubber sealing ring 4 is also placed in the end face groove matching the bearing seat 5 and the bearing cover 3 and is used for end face sealing of the bearing cover 3.
[0026] There are four bearings 9 in total, two on each side, arranged back to back. Tapered roller bearings 9 are selected to bear the axial force and radial force generated by the moving equipment on the bearings, and through the bearings 9, the bearing seat 5 and the moving equipment rotate around the rotating shaft 1 at a low speed.
[0027] The circular rubber sealing ring 4, the skeleton oil seal 10, the skeleton oil seal gasket 12, the packing 13, the disc spring 14 and the packing gland 15 are installed from the inside to the outside between the bearing seat 5 and the rotating shaft 1, and together constitute the seal between the bearing chamber and the cooling water. The circular rubber sealing ring 4 (two pieces on one side) is the first seal between the bearing chamber and the cooling water, the skeleton oil seal 10 is the second seal between the bearing chamber and the cooling water, and the packing 13 (four rings on one side) is the third seal between the bearing chamber and the circulating water.
[0028] The inner ring of the skeleton oil seal gasket 12 is grooved to install the support ring 11, which guides and supports the rotating shaft 1 to prevent the shaft from failing in sealing due to the downward deflection of the moving equipment due to gravity.
[0029] The two pieces of the skeleton oil seal gasket 12 on one side are respectively located on both sides of the packing 13. The skeleton oil seal gasket 12 on the inner side of the packing 13 close to the bearing chamber separates the packing 13 from the skeleton oil seal 10, and transmits the axial force generated by the packing gland 15 to the bearing seat 5 through the skeleton oil seal gasket 12 to avoid crushing the skeleton oil seal 10. The skeleton oil seal gasket 12 on the outer side of the packing 13 away from the bearing chamber evenly transmits the compression force generated by the disc spring 14 to the surface of the packing 13, increasing the action area of the disc spring 14 on the packing 13, and avoiding the packing 13 from being dented and causing sealing failure.
[0030] The outer ring of the packing gland 15 is provided with an external thread, which cooperates with the internal thread on the bearing seat 5 and is used to compress the packing 13 so that the inner and outer rings of the packing 13 are tightly fitted with the rotating shaft 1 and the bearing seat 5 to achieve a sealing effect.
[0031] The disc spring 14 is located between the packing gland 15 and the skeleton oil seal gasket 12 away from the bearing chamber. There are two disc springs on one side, which are arranged in the same direction. Their functions are to prevent the packing gland 15 from loosening and to prevent the packing 13 from sealing failure by continuing to press it tightly through the elastic force of the disc spring 14 when the packing 13 is worn.
[0032] The outer ring of the end cover 16 is provided with an external thread, which cooperates with the internal thread on the bearing seat side cover plate 8. The end faces of the bearing seat side cover plate 8 and the end cover 16 are provided with grooves to place the circular rubber sealing ring 4 to prevent the cooling water from flowing out. The cooling sealing device can be conveniently installed and maintained through the end cover 16.
Claims
1. A sealed water cooling device for a rotating shaft of a moving device, characterized in that: The invention comprises a rotating shaft (1), a waterway baffle (2) is covered at the center of the outer side of the rotating shaft (1), a plurality of second water holes (18) are opened on the circumferential side of the waterway baffle (2), and a plurality of first water holes (17) are opened on the side wall of the rotating shaft (1) corresponding to the second water holes (18), bearing seats (5) are symmetrically fixed on both sides of the rotating shaft (1), a plurality of bearings (9) are arranged in the bearing seats (5), and a waterway baffle (6) inside the bearing seats is fixed on the circumferential side of the bearing seats (5). A bearing seat outer water channel baffle (7) is fixedly provided on the outer circumferential side of the bearing seat inner water channel baffle (6), a plurality of packings (13) are fixedly provided between the bearing seat (5) and the rotating shaft (1), a plurality of third water holes (19) are evenly distributed on the bearing seat inner water channel baffle (6), a fourth water hole (20) is also provided on the bearing seat outer water channel baffle (7), and an end cover (16) is also provided on the end of the rotating shaft (1) away from the bearing seat outer water channel baffle (7).
2. A sealed water cooling device for a rotating shaft of a moving equipment according to claim 1, characterized in that: A bearing cover (3) is clamped on the inner side of the bearing seat (5), and a circular rubber sealing ring (4) is clamped between the bearing cover (3) and the rotating shaft (1).
3. A sealed water cooling device for a rotating shaft of a moving equipment according to claim 2, characterized in that: A skeleton oil seal (10) is clamped between the bearing seat (5) and the packing (13) in close contact with the rotating shaft (1), a support ring (11) is clamped on the side of the skeleton oil seal (10), and a skeleton oil seal gasket (12) is also clamped on the side of the support ring (11).
4. A sealed water cooling device for a rotating shaft of a moving equipment according to claim 3, characterized in that: A disc spring (14) is provided on the side of the packing (13) and between the bearing seat (5) and the rotating shaft (1), and a packing gland (15) is provided on one side of the disc spring (14) close to the end of the rotating shaft (1).
5. The sealed water cooling device for a rotating shaft of a moving equipment according to claim 1, characterized in that: A bearing seat side cover plate (8) is also clamped on the circumferential side of the end cover (16).