CN211343463U - Bearing box device of cantilever type fan bearing forced air cooling - Google Patents
Bearing box device of cantilever type fan bearing forced air cooling Download PDFInfo
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- CN211343463U CN211343463U CN201922309593.0U CN201922309593U CN211343463U CN 211343463 U CN211343463 U CN 211343463U CN 201922309593 U CN201922309593 U CN 201922309593U CN 211343463 U CN211343463 U CN 211343463U
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- rotating shaft
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- 238000001816 cooling Methods 0.000 title claims abstract description 44
- 238000005096 rolling process Methods 0.000 claims abstract description 25
- 230000017525 heat dissipation Effects 0.000 claims abstract description 18
- 239000003921 oil Substances 0.000 claims description 167
- 239000010687 lubricating oil Substances 0.000 claims description 22
- 239000000498 cooling water Substances 0.000 abstract description 7
- 239000003570 air Substances 0.000 description 21
- 210000004907 gland Anatomy 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000883990 Flabellum Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model provides a bearing box device of cantilever type fan bearing forced air cooling, solves current bearing box under the condition of no cooling water, the difficult effluvium of heat, the unable problem of safe and stable operation. Including the bearing box body that runs through to be provided with the fan pivot in the logical chamber, its characterized in that: an oil storage cavity is arranged in the middle of the bearing box body, side covers are arranged on the outer sides of the rolling bearings at the two ends, and oil seals are arranged on the side covers; oil slingers are respectively arranged on the end sides, close to the two rolling bearings, of a section of fan rotating shaft positioned in the oil storage cavity; oil collecting grooves are respectively arranged at the positions above the oil pool and below the fan rotating shaft at the two end sides of the oil storage cavity; the fan rotating shaft extends out of two ends of the outer side of the bearing box body and is respectively provided with a cooling fan and a heat dissipation rotating wheel; and a cooling air duct is arranged on the bearing box body. The cooling device has reasonable design and compact structure, can ensure that the rolling bearing of the fan is effectively cooled under the conditions of no cooling water and high ambient temperature, and ensures the safe and stable operation of the fan.
Description
Technical Field
The utility model belongs to the technical field of the ventilation equipment, concretely relates to can ensure under the condition that no cooling water, ambient temperature are high, effectively cool down fan antifriction bearing, the bearing box device of cantilever type fan bearing forced air cooling that can guarantee fan safety and stability operation of generating heat of control cantilever type centrifugal fan bearing.
Background
At present, most of the cooling of the rolling bearing group of the centrifugal fan adopts water cooling and forced lubrication cooling modes, but with the development of the fan industry and the shortage of water resources in recent years, the situation that cooling water cannot be introduced due to the lack of water in geographical terrain or fan installation factors and the like in the fan operation field gradually occurs, and the normal operation of the fan is extremely unfavorable; in addition, the forced lubrication can increase the operation cost of the fan and increase the burden of enterprises. Therefore, in order to ensure that the fan can stably operate under the conditions of no cooling water and high ambient temperature, the cooling mode and the structure of the rolling bearing set of the centrifugal fan in the prior art need to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses just to above-mentioned problem, provide one kind and can ensure under the condition that no cooling water, ambient temperature are high, effectively cool down fan antifriction bearing, control cantilever type centrifugal fan bearing generate heat, can guarantee the cantilever type fan bearing forced air cooling's of fan safety and stability operation bearing box device.
The utility model adopts the technical proposal that: this bearing box device of cantilever type fan bearing forced air cooling includes bearing box, its characterized in that: a fan rotating shaft penetrates through the through cavity of the bearing box body, an oil storage cavity is arranged in the middle of the bearing box body, and rolling bearings sleeved on the fan rotating shaft are respectively arranged on two sides of the oil storage cavity and two end parts of the bearing box body; the outer sides of the rolling bearings at the two ends are provided with side covers, oil seals are arranged on the side covers, the outer sides of the oil seals are provided with press covers, and lip seals are arranged between the press covers and the oil seals; oil slingers are respectively arranged on a section of fan rotating shaft positioned in the oil storage cavity and close to the end sides of the two rolling bearings, the upper parts of the oil slingers are clamped in clamping ring grooves of the fan rotating shaft, and the lower parts of the oil slingers are immersed in the oil pool; oil collecting grooves for recovering lubricating oil are respectively arranged at the positions above the oil pool and below the fan rotating shaft at the two end sides of the oil storage cavity; the fan rotating shaft extends out of two ends of the outer side of the bearing box body and is respectively provided with a cooling fan for taking away heat generated by the work of the bearing and a heat dissipation rotating wheel for isolating the heat generated by the fan side; and cooling air ducts which are arranged along the axial direction of the rotating shaft of the fan are respectively arranged on the bearing box body and at positions corresponding to the fan blades of the cooling fan.
The side cover is provided with an oil seal, and the side cover is provided with an inner oil return groove and an outer oil return groove which are sequentially arranged from inside to outside along the radial direction of a rotating shaft of the fan; an oil throwing nut is arranged on a section of the fan rotating shaft between the rolling bearing and the oil seal, and an inclined cone convex edge of the oil throwing nut extends into an inner oil return groove of the oil seal. So that part of the lubricating oil splashed and adhered to the fan rotating shaft and the oil throwing nut is thrown onto the inner wall of the side cover of the bearing box body by the bulge on the sealed oil throwing nut through centrifugal force and flows to the bottom of the side cover through the outer oil return groove of the oil seal; the other part of the lubricating oil extends into an inclined cone convex edge in an oil return groove in the oil seal through an oil throwing nut, is thrown into the oil seal and naturally falls down through the inner oil return groove; thereby effectively preventing the lubricating oil from leaking and being beneficial to the circulation of the lubricating oil.
And side cover oil return holes are formed in the lower part of the oil throwing nut and the lower edge of the side cover and are communicated with the bottom of the oil pool through box body oil return holes. And lubricating oil enters the oil return hole of the box body through the oil return hole of the side cover through the inclined plane at the lower part of the side cover, and then flows back into the oil pool to complete circulation.
The cooling fan is composed of a fan main body, a fan mounting hole is formed in the middle of the fan main body, a fan mounting key groove is formed in the fan mounting hole, and a plurality of groups of fan blades are evenly distributed on the circumference of the outer side of the fan main body. The cooling fan is installed at one end, located on the motor side, of the fan rotating shaft through the fan installation hole and the connecting key, the cooling air duct is used for enabling the fan blades of the cooling fan to produce forced cold air, continuous through flow is formed on the outer wall of the bearing box body, heat generated by bearing work is taken away, flowing of air in the surrounding environment of the bearing box body is accelerated, and the heat dissipation efficiency of the box body is higher.
The heat dissipation rotating wheel is composed of a rotating wheel main body, a rotating wheel mounting hole is formed in the middle of the rotating wheel main body, a rotating wheel mounting key groove is formed in the rotating wheel mounting hole, and a positioning screw hole is formed in the rotating wheel mounting key groove; and a plurality of groups of runner blades are uniformly distributed on the circumference of the outer side of the runner main body. The heat dissipation rotating wheel is installed at one end, located on the side of the fan, of the fan rotating shaft by means of the rotating wheel installation hole and the connecting key, so that heat generated by the fan side is isolated, the temperature of the bearing is reduced, and meanwhile, influence of overheated air generated by heat dissipation on the box body can be avoided by blown air flow.
The oil slinger is composed of an annular slinger main body, an oil convex edge is arranged on the outer side ring wall of the slinger main body, and an oil storage groove is arranged on the inner side ring wall of the slinger main body. The contact area of the oil slinger and the lubricating oil is increased, the oil carrying capacity of the oil slinger is improved, the bearing is lubricated better, and the heat exchange of the lubricating oil in the oil storage cavity is promoted.
The utility model has the advantages that: because the utility model adopts the bearing box body which is provided with the fan rotating shaft and runs through the through cavity, the middle part of the bearing box body is provided with the oil storage cavity, and the two sides of the oil storage cavity and the two end parts of the bearing box body are respectively provided with the rolling bearings; the outer sides of the rolling bearings at the two ends are provided with side covers, and oil seals are arranged on the side covers; oil slingers are respectively arranged on a section of fan rotating shaft positioned in the oil storage cavity and close to the end sides of the two rolling bearings, the upper parts of the oil slingers are clamped in clamping ring grooves of the fan rotating shaft, and the lower parts of the oil slingers are immersed in the oil pool; oil collecting grooves are respectively arranged at the positions above the oil pool and below the fan rotating shaft at the two end sides of the oil storage cavity; the fan rotating shaft extends out of two ends of the outer side of the bearing box body and is respectively provided with a cooling fan and a heat dissipation rotating wheel; the structural form of the cooling air channels is respectively arranged on the box body of the bearing box and at the positions corresponding to the fan blades of the cooling fan, so that the cooling fan box is reasonable in design and compact in structure, can ensure that the rolling bearing of the fan is effectively cooled under the conditions of no cooling water and high ambient temperature, controls the heating of the bearing of the cantilever type centrifugal fan, and can ensure the safe and stable operation of the fan; and the oil seal and the oil throwing nut with special structures and the lip seal arranged between the gland and the oil seal can effectively prevent the leakage of lubricating oil and avoid polluting the field environment.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a portion of the end of fig. 1.
Fig. 3 is an a-direction, partial structural view of fig. 2.
Fig. 4 is a schematic structural view of the cooling fan in fig. 1.
Fig. 5 is a left side view of fig. 4.
Fig. 6 is a schematic structural diagram of the heat dissipation rotor of fig. 1.
Fig. 7 is a left side view of fig. 6.
Fig. 8 is a schematic view of a configuration of the oil slinger of fig. 1.
The sequence numbers in the figures illustrate: the cooling structure comprises a bearing box body 1, a cooling air channel 2, a fan rotating shaft 3, an oil storage cavity 4, an oil slinger 5, a rolling bearing 6, an oil slinger nut 7, a side cover 8, an oil seal 9, a cooling fan 10, an oil pool 11, an oil discharge port 12, a heat dissipation rotating wheel 13, a vent plug 14, an oil collecting tank 15, an oil return tank 16, an internal oil return tank 17, a lip seal 18, a gland 19, a side cover oil return hole 20, a box body oil return hole 21, a fan main body 22, a fan mounting hole 23, a fan blade 24, a fan mounting key groove 25, a rotating wheel main body 26, a rotating wheel mounting hole 27, a rotating wheel blade 28, a rotating wheel mounting key groove 29, a positioning screw hole 30, a swinging ring main body 31, a.
Detailed Description
The specific structure of the present invention is described in detail with reference to fig. 1 to 8. The bearing box device for the cantilever type fan bearing air cooling comprises a bearing box body 1, wherein a fan rotating shaft 3 transversely penetrates through a through cavity of the bearing box body 1; the middle part of the bearing box body 1 is provided with an oil storage cavity 4, and two rolling bearings 6 sleeved on the fan rotating shaft 3 are respectively arranged at two sides of the oil storage cavity 4 and two end parts of the bearing box body 1. The outer sides of the rolling bearings 6 at the two ends are provided with side covers 8, and oil seals 9 are arranged on the side covers 8; a gland 19 is arranged on the outer side of the oil seal 9, and a lip seal 18 for closely contacting with the fan rotating shaft 3 is arranged between the gland 19 and the oil seal 9.
The side cover 8 is provided with an oil seal 9 facing the rolling bearing 6, and the side cover is provided with an inner oil return groove 17 and an outer oil return groove 16 which are arranged along the radial direction of the fan rotating shaft 3 from inside to outside in sequence. An oil throwing nut 7 is respectively arranged on a section of the fan rotating shaft 3 between the rolling bearing 6 and the oil seal 9; and the inclined cone convex edge of the oil throwing nut 7 extends into the inner oil return groove 17 of the oil seal 9, so that the leakage of lubricating oil is effectively prevented. Meanwhile, a side cover oil return hole 20 is formed below the oil throwing nut 7 and on the lower edge of the side cover 8, and the side cover oil return hole 20 is communicated with the bottom of the oil pool 11 through a box body oil return hole 21; an oil discharge port 12 is arranged at the lower part of the end side of the oil pool 11. Furthermore, a part of the lubricating oil splashed and adhered to the fan rotating shaft 3 and the oil throwing nut 7 is thrown onto the inner wall of the side cover 8 of the bearing box body 1 by the bulge on the sealed oil throwing nut 7 through centrifugal force and flows to the bottom of the side cover 8 through the outer oil return groove 16 of the oil seal 9; the other part of the lubricating oil extends into the inclined conical convex edge in the oil return groove 17 in the oil seal 9 through the oil throwing nut 7, is thrown into the oil seal 9 and naturally falls down through the inner oil return groove 17; then, the lubricating oil enters the tank body oil return hole 21 through the side cover oil return hole 20 by the inclined surface at the lower part of the side cover 8, and further flows back to the oil pool 11, thereby completing the circulation.
And oil slingers 5 are respectively arranged on the end sides of a section of fan rotating shaft 3 positioned in the oil storage cavity 4 of the bearing box body 1 and close to the two rolling bearings 6. The oil slinger 5 is composed of an annular slinger main body 31, an oil-carrying convex edge 32 is arranged on the outer side ring wall of the slinger main body 31, and two oil storage grooves 33 are arranged on the inner side ring wall of the slinger main body 31; therefore, the contact area of the oil slinger 5 and the lubricating oil is increased, the oil carrying capacity of the oil slinger 5 is improved, the better lubrication of the bearing is facilitated, and the heat exchange of the lubricating oil in the oil storage cavity 4 is promoted. And the upper part of the oil slinger 5 is clamped in the clamping ring groove of the fan rotating shaft 3, and the lower part of the oil slinger 5 is immersed in the oil pool 11. Oil sumps 15 for recovering lubricating oil are respectively arranged above the oil pool 11 and below the fan rotating shaft 3 at the two end sides of the oil storage cavity 4.
The fan rotating shaft 3 extends out of two ends of the outer side of the bearing box body 1 and is respectively provided with a cooling fan 10 which is positioned on the motor side and used for taking away heat generated by the work of the bearing and a heat dissipation rotating wheel 13 which is positioned on the fan side and used for isolating the heat generated by the fan side. The cooling fan 10 that 3 motor sides of fan pivot set up comprises fan main part 22, and the middle part of fan main part 22 is provided with fan mounting hole 23, is provided with fan installation keyway 25 in the fan mounting hole 23, and the equipartition has a plurality of fan flabellums 24 of group on the outside circumference of fan main part 22. Cooling air ducts 2 which are arranged along the axial direction of a fan rotating shaft 3 are respectively arranged on the bearing box body 1 and at positions corresponding to the fan blades of the cooling fan 10; and then install cooling fan 10 in the one end that fan pivot 3 is located the motor side through fan mounting hole 23 and connector key, utilize cooling duct 2 to make the produced compulsory cold wind of fan flabellum 24 of cooling fan 10, form continuous through-flow on bearing box 1 outer wall, and then take away the heat that the bearing work produced to the flow of box surrounding environment air is accelerated, make box radiating efficiency higher.
The heat dissipation rotating wheel 13 arranged on the fan side of the fan rotating shaft 3 is composed of a rotating wheel main body 26, a rotating wheel mounting hole 27 is formed in the middle of the rotating wheel main body 26, a rotating wheel mounting key groove 29 is formed in the rotating wheel mounting hole 27, and a positioning screw hole 30 is formed in the rotating wheel mounting key groove 29; a plurality of groups of runner blades 28 are uniformly distributed on the outer circumference of the runner main body 26; the heat dissipation rotating wheel 13 is installed at one end of the fan rotating shaft 3, which is located at the side of the fan, through the rotating wheel installation hole 27 and the connecting key, so that heat generated by the fan side is isolated, the temperature of the bearing is reduced, and meanwhile, influence of overheat air generated by heat dissipation on the box body can be avoided through blown air flow. The bearing box body 1 is also provided with an air-bleed vent hole communicated with the oil storage cavity 4, and the air-bleed vent hole is provided with a vent plug 14; so as to adjust the pressure in the oil storage cavity 4 and improve the use safety of the device.
When the cantilever type fan bearing air-cooled bearing box device is used, the fan rotating shaft 3 is located on the cooling fan 10 at one end of the motor side and rotates together with the fan rotating shaft 3, and then forced cold air generated by the fan blades 24 of the cooling fan 10 is enabled to be generated by the cooling air duct 2, so that continuous through flow is formed on the outer wall of the bearing box body 1, heat generated by bearing work is taken away, flowing of ambient air around the box body is accelerated, and the heat dissipation efficiency of the box body is higher. The heat dissipation rotating wheel 13 of the fan rotating shaft 3, which is positioned at one end of the fan side, synchronously rotates along with the fan rotating shaft 3 to isolate heat generated at the fan side and reduce the temperature of the bearing; the blown air flow can also avoid the influence of the overheated air generated by heat dissipation on the box body.
Moreover, the oil slingers 5 which are positioned on a section of the fan rotating shaft 3 in the oil storage cavity 4 of the bearing box body 1 and are close to the two ends of the two rolling bearings 6 rotate at a slow speed by utilizing the friction force between the oil slingers and the rotating shaft, and the lubricating oil with the bottom part immersed in the oil pool 11 is carried upwards and dripped into the oil collecting tank 15; meanwhile, as the oil slinger 5 rotates, lubricating oil splashed and adhered to the fan rotating shaft 3 and the oil slinger nut 7 is partially thrown onto the inner wall of the side cover 8 of the bearing box body 1 by a bulge on the sealed oil slinger nut 7 through centrifugal force and flows to the bottom of the side cover 8 through an outer oil return groove 16 of the oil seal 9; the other part of the splashed lubricating oil extends into the inclined cone convex edge in the oil return groove 17 in the oil seal 9 through the oil throwing nut 7, is thrown into the oil seal 9 and naturally falls through the inner oil return groove 17; then, the lubricating oil enters the case body oil return hole 21 through the side cover oil return hole 20 and finally flows back to the oil pool 11, and the circulation is completed. The oil seal 9 and the oil throwing nut 7 with special structures and the lip seal 18 arranged between the gland 19 and the oil seal 9 can effectively prevent the leakage of lubricating oil and avoid polluting the field environment.
Claims (6)
1. The utility model provides a bearing box device of cantilever type fan bearing forced air cooling, includes bearing box (1), its characterized in that: a fan rotating shaft (3) penetrates through the through cavity of the bearing box body (1), an oil storage cavity (4) is formed in the middle of the bearing box body (1), and rolling bearings (6) sleeved on the fan rotating shaft (3) are respectively arranged on two sides of the oil storage cavity (4) and two end portions of the bearing box body (1); the outer sides of the rolling bearings (6) at the two ends are provided with side covers (8), oil seals (9) are arranged on the side covers (8), the outer sides of the oil seals (9) are provided with press covers (19), and lip seals (18) are arranged between the press covers (19) and the oil seals (9); oil slingers (5) are respectively arranged on one section of the fan rotating shaft (3) positioned in the oil storage cavity (4) and close to the end sides of the two rolling bearings (6), the upper parts of the oil slingers (5) are clamped in clamping ring grooves of the fan rotating shaft (3), and the lower parts of the oil slingers (5) are immersed in an oil pool (11); oil collecting grooves (15) for recovering lubricating oil are respectively arranged at the positions above the oil pool (11) and below the fan rotating shaft (3) at the two end sides of the oil storage cavity (4); the fan rotating shaft (3) extends out of two ends of the outer side of the bearing box body (1), and is respectively provided with a cooling fan (10) for taking away heat generated by the bearing work and a heat dissipation rotating wheel (13) for isolating the heat generated by the fan side; and cooling air ducts (2) which are axially arranged along the fan rotating shaft (3) are respectively arranged on the bearing box body (1) and at positions corresponding to the fan blades of the cooling fan (10).
2. The cantilevered fan bearing air-cooled bearing housing apparatus of claim 1, wherein: an inner oil return groove (17) and an outer oil return groove (16) which are sequentially arranged from inside to outside along the radial direction of the fan rotating shaft (3) are respectively arranged on one side, facing the rolling bearing (6), of the oil seal (9) arranged on the side cover (8); an oil throwing nut (7) is arranged on one section of the fan rotating shaft (3) between the rolling bearing (6) and the oil seal (9), and the inclined cone convex edge of the oil throwing nut (7) extends into an inner oil return groove (17) of the oil seal (9).
3. The cantilever type fan bearing air-cooled bearing housing apparatus of claim 2, wherein: and a side cover oil return hole (20) is formed below the oil throwing nut (7) and on the lower edge of the side cover (8), and the side cover oil return hole (20) is communicated with the bottom of the oil pool (11) through a box body oil return hole (21).
4. The cantilevered fan bearing air-cooled bearing housing apparatus of claim 1, wherein: the cooling fan (10) is composed of a fan main body (22), a fan mounting hole (23) is formed in the middle of the fan main body (22), a fan mounting key groove (25) is formed in the fan mounting hole (23), and a plurality of groups of fan blades (24) are uniformly distributed on the circumference of the outer side of the fan main body (22).
5. The cantilevered fan bearing air-cooled bearing housing apparatus of claim 1, wherein: the heat dissipation rotating wheel (13) is composed of a rotating wheel main body (26), a rotating wheel mounting hole (27) is formed in the middle of the rotating wheel main body (26), a rotating wheel mounting key groove (29) is formed in the rotating wheel mounting hole (27), and a positioning screw hole (30) is formed in the rotating wheel mounting key groove (29); a plurality of groups of runner blades (28) are uniformly distributed on the circumference of the outer side of the runner main body (26).
6. The cantilevered fan bearing air-cooled bearing housing apparatus of claim 1, wherein: the oil slinger (5) is composed of an annular slinger main body (31), an oil-carrying convex edge (32) is arranged on the outer side ring wall of the slinger main body (31), and an oil storage groove (33) is arranged on the inner side ring wall of the slinger main body (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922309593.0U CN211343463U (en) | 2019-12-20 | 2019-12-20 | Bearing box device of cantilever type fan bearing forced air cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922309593.0U CN211343463U (en) | 2019-12-20 | 2019-12-20 | Bearing box device of cantilever type fan bearing forced air cooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211343463U true CN211343463U (en) | 2020-08-25 |
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ID=72133290
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922309593.0U Active CN211343463U (en) | 2019-12-20 | 2019-12-20 | Bearing box device of cantilever type fan bearing forced air cooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211343463U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685445A (en) * | 2021-08-26 | 2021-11-23 | 浙江上风高科专风实业股份有限公司 | A new type of air-cooled bearing box |
| CN120934268A (en) * | 2025-10-14 | 2025-11-11 | 福建万达电机有限公司 | Oil immersed motor and use method thereof |
-
2019
- 2019-12-20 CN CN201922309593.0U patent/CN211343463U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685445A (en) * | 2021-08-26 | 2021-11-23 | 浙江上风高科专风实业股份有限公司 | A new type of air-cooled bearing box |
| CN113685445B (en) * | 2021-08-26 | 2023-06-27 | 浙江上风高科专风实业股份有限公司 | Novel air cooling bearing box |
| CN120934268A (en) * | 2025-10-14 | 2025-11-11 | 福建万达电机有限公司 | Oil immersed motor and use method thereof |
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