CN211343464U - Air-cooled rolling bearing box of centrifugal ventilator - Google Patents
Air-cooled rolling bearing box of centrifugal ventilator Download PDFInfo
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- CN211343464U CN211343464U CN201922309628.0U CN201922309628U CN211343464U CN 211343464 U CN211343464 U CN 211343464U CN 201922309628 U CN201922309628 U CN 201922309628U CN 211343464 U CN211343464 U CN 211343464U
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Abstract
An air-cooled rolling bearing box of a centrifugal ventilator solves the problems that heat in a bearing box is not easy to dissipate and the fan cannot safely and stably run under the condition that no cooling water exists in the running field of the fan in the prior art. Including the bearing box body that constitutes by the case main part, its characterized in that: one end of the box main body is provided with a bearing cavity, and a rolling bearing is arranged in the bearing cavity; an oil thrower is arranged on a section of the rotating shaft of the ventilator positioned in the end cover; an axial flow cooling fan is arranged on a section of the rotating shaft of the ventilator positioned in the cooling fan cavity; an oil storage cavity is formed among the interior of the box main body, the bearing cavity and the cooling fan cavity, an oil slinger is arranged on a section of rotating shaft of the ventilator located in the oil storage cavity, and an oil slinger is arranged on a section of rotating shaft of the ventilator located in the oil storage cavity. The cooling device has reasonable design and compact structure, can effectively cool the bearing box body in the high-temperature operation environment without cooling water, ensures the safe and stable operation of the fan, saves water and electricity resources, and can effectively avoid environmental pollution.
Description
Technical Field
The utility model belongs to the technical field of the ventilation is equipped, concretely relates to can be under the high temperature operational environment of no cooling water, effectively cool down antifriction bearing and bearing box, ensure fan safety and stability and move, practice thrift water and electricity resource to can effectively avoid environmental pollution's centrifugal fan's forced air cooling antifriction bearing case.
Background
The rolling bearing box of the existing centrifugal ventilator adopts the form of oil bath lubrication and cooling water introduction to stabilize the temperature rise of the fan bearing, so that the bearing box can safely and stably operate. However, because the site conditions are limited and water resources cannot be introduced, some fan bearing boxes in industrial sites cannot be filled with cooling water, which means that the original combined cooling mode of oil bath lubrication and cooling water filling cannot meet the use requirements. In addition, because the bearing box is made of cast iron and is a closed space, the heat in the bearing box with the cavity structure is not easy to dissipate to the outside; when the fan runs under the condition that the environmental temperature is high in summer, the ambient temperature around the fan is high, heat dissipation of the bearing box is not facilitated, meanwhile, heat radiation and other various composite factors generated by the high-temperature fan shell are mutually superposed, heat dissipation of the bearing box is further facilitated, the temperature of a bearing of the fan is rapidly increased, even can exceed 70 ℃, and the normal running of the fan is extremely disadvantageous. Therefore, the cooling mode and the structure of the rolling bearing box of the centrifugal ventilator 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 can be under the high temperature operational environment of no cooling water, effectively cool down antifriction bearing and bearing box, ensure the operation of fan safety and stability, practice thrift water and electricity resource to can effectively avoid environmental pollution's centrifugal fan's forced air cooling antifriction bearing case.
The utility model adopts the technical proposal that: this centrifugal fan's forced air cooling rolling bearing case includes bearing case box, its characterized in that: the bearing box body is composed of a box main body, a ventilator rotating shaft penetrates through a through cavity in the middle of the box main body, a bearing cavity is formed in one end of the box main body, and a rolling bearing is arranged in the bearing cavity; an end cover is arranged on the outer side of the bearing cavity, an oil seal is arranged on the outer side of the end cover, and a gland is arranged on the outer side of the oil seal; an oil thrower is arranged on a section of the rotating shaft of the ventilator positioned in the end cover; a cooling fan cavity is formed in the other end of the box main body, and an axial flow cooling fan is arranged on a section of a rotating shaft of the ventilator positioned in the cooling fan cavity; an oil storage cavity is also arranged inside the box main body and between the bearing cavity and the cooling fan cavity, and an oil pool is arranged at the lower part of the oil storage cavity; an oil slinger is arranged on one side, close to the rolling bearing, of a section of the fan rotating shaft in the oil storage cavity, the lower part of the oil slinger is immersed into the oil pool, and oil grooves for recovering lubricating oil are arranged at positions above the oil pool and below the fan rotating shaft; meanwhile, an oil thrower is arranged on one side, close to the axial flow cooling fan, of a section of fan rotating shaft in the oil storage cavity; and an oil seal with a gland at the outer side is arranged between the oil storage cavity and the cooling fan cavity.
The axial flow cooling fan arranged in the cooling fan cavity of the bearing box body is composed of a fan main body, a fan mounting hole is formed in the middle of the fan main body, a connecting key groove is formed in the fan mounting hole, and a plurality of groups of fan blades are uniformly distributed on the outer circumference of the fan main body; and air cooling channels which are axially arranged along the rotating shaft of the ventilator are respectively arranged on the box main body of the bearing box body and at positions corresponding to the fan blades of each group of the axial flow cooling fan. The axial flow cooling fan is arranged on the rotating shaft of the ventilator through the fan mounting hole and the connecting key, and the cooling air generated by the fan blades of the axial flow cooling fan is enabled to form continuous through flow on the outer wall of the box body of the bearing box by utilizing the air cooling channel, so that the flow of the ambient air around the box body is accelerated, and the heat dissipation efficiency of the box body is higher; meanwhile, the blown air flow can also avoid the influence of the overheated air generated by heat dissipation on the box body.
The middle part of the oil seal is provided with a rotating shaft through hole, the outer side of the oil seal is provided with a clamping convex edge which is used for being matched and connected with the end cover, and one end of the oil seal, which is contacted with the gland, is provided with a sealing cavity for arranging a sealing ring; an oil return groove arranged on the outer side of the other end of the oil seal is matched and connected with an oil seal clamping groove at the end part of the oil thrower; and an oil return hole is also formed in the oil return groove. So as to utilize the oil return groove that sets up on the oil blanket to be convenient for the backward flow of fluid on the disc when carrying out abundant sealing to lubricating oil in the cavity.
And a plurality of groups of radiating fins which are axially arranged along the rotating shaft of the ventilator are arranged outside the box main body of the bearing box body. The heat dissipation effect of the outer surface of the bearing box body casting is improved by utilizing the plurality of convex heat dissipation fins arranged on the box body.
And a spare oil way communicated with the bearing cavity is arranged on the box body of the bearing box body. So as to be convenient for the supplement of lubricating oil in the bearing cavity and the oil storage cavity and be beneficial to the flexible adjustment of the oil bath immersion height of the rolling bearing.
And the main body of the bearing box body is also provided with an air-bleeding vent hole communicated with the oil storage cavity, and the air-bleeding vent hole is provided with a safety plug. So as to adjust the pressure in the oil storage cavity and improve the use safety of the device.
The utility model has the advantages that: because the utility model adopts the bearing box body composed of the box main body, the rotating shaft of the ventilator runs through the through cavity in the middle of the box main body, one end of the box main body is provided with the bearing cavity, and the bearing cavity is internally provided with the rolling bearing; an end cover is arranged on the outer side of the bearing cavity, an oil seal is arranged on the outer side of the end cover, and a gland is arranged on the outer side of the oil seal; an oil thrower is arranged on a section of the rotating shaft of the ventilator positioned in the end cover; a cooling fan cavity is formed in the other end of the box main body, and an axial flow cooling fan is arranged on a section of a rotating shaft of the ventilator positioned in the cooling fan cavity; an oil storage cavity is arranged in the box main body and between the bearing cavity and the cooling fan cavity, and an oil pool is arranged at the lower part of the oil storage cavity; an oil slinger is arranged on one side, close to the rolling bearing, of a section of the ventilator rotating shaft positioned in the oil storage cavity, the lower part of the oil slinger is immersed in the oil pool, and oil grooves are formed in positions above the oil pool and below the ventilator rotating shaft; the structural form that is located one section ventilation blower pivot of oil storage intracavity portion, is close to axial flow cooling fan one side and sets up the disc, so its reasonable in design, compact structure can be under the high temperature operational environment of no cooling water, effectively cool down antifriction bearing and bearing box, ensures the safe and stable operation of fan, has not only practiced thrift a large amount of water and electricity resources for the fan user, but also can effectually avoid environmental pollution.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partial sectional view of the structure of fig. 1 taken along line a-a.
Fig. 3 is a schematic view of a structure of the bearing housing case of fig. 1.
Fig. 4 is a left side view of fig. 3.
Fig. 5 is a schematic structural view of the axial flow cooling fan of fig. 1.
Fig. 6 is a left side view of fig. 5.
Fig. 7 is a schematic view of a connection structure of the oil seal and the oil thrower in fig. 1.
Fig. 8 is an enlarged view of a portion of the structure at B in fig. 7.
The sequence numbers in the figures illustrate: the oil level indicator comprises a bearing box body 1, a gland 2, a sealing ring 3, an oil seal 4, an end cover 5, an oil thrower 6, a rolling bearing 7, a round nut 8, a safety plug 9, an oil thrower 10, an axial flow cooling fan 11, an oil level indicator 12, a ventilator rotating shaft 13, an oil sump 14, an oil groove 15, a box main body 16, a bearing cavity 17, a spare oil circuit 18, an air vent 19, a cooling fan cavity 20, an oil storage cavity 21, an air cooling channel 22, a radiating fin 23, a fan main body 24, a fan mounting hole 25, fan blades 26, a fan blade 27 connecting key groove 28, a sealing cavity 29, a rotating shaft through hole 29, a clamping convex edge 30, an oil return groove 31, an oil seal.
Detailed Description
The specific structure of the present invention is described in detail with reference to fig. 1 to 8. The air-cooled rolling bearing box of the centrifugal ventilator comprises a bearing box body 1 consisting of a box main body 16, a ventilator rotating shaft 13 penetrates through a through cavity in the middle of the box main body 16 of the bearing box body 1, a bearing cavity 17 is formed in one end of the box main body 16, and a rolling bearing 7 (for example, a spherical roller bearing) is arranged in the bearing cavity 17; the rolling bearing 7 is positioned at one end of the inner side of the box main body 16 and is limited by a round nut 8 arranged on a rotating shaft 13 of the ventilator. A spare oil path 18 communicated with the bearing cavity 17 is arranged on a box main body 16 of the bearing box body 1; so as to facilitate the supplement of lubricating oil in the bearing cavity 17 and the oil storage cavity 21 and facilitate the flexible adjustment of the immersion height of the oil bath of the rolling bearing 7.
An end cover 5 is arranged on the outer side of a bearing cavity 17 of the bearing box body 1, an oil seal 4 is arranged on the outer side of the end cover 5, and a gland 2 is arranged on the outer side of the oil seal 4; an oil thrower 6 is arranged on a section of the rotating shaft 13 of the ventilator positioned inside the end cover 5. A rotating shaft through hole 29 is formed in the middle of the oil seal 4, a clamping convex edge 30 which is matched and connected with the end cover 5 is arranged on the outer side of the oil seal 4, and a sealing cavity 28 for arranging the sealing ring 3 is formed in one end, which is in contact with the gland 2, of the oil seal 4; an oil return groove 31 arranged on the outer side of the other end of the oil seal 4 is matched and connected with an oil seal clamping groove 32 at the end part of the oil thrower 6; the oil return groove 31 is further provided with an oil return hole 33. And then when carrying out abundant sealed to lubricating oil in the cavity, utilize the oil return recess 31 that sets up on the oil blanket 4 to be convenient for the backward flow of fluid on the disc 6 to make the produced high temperature fluid of lubricated antifriction bearing 7 flow back to the oil tank fast.
The other end of the box main body 16 of the bearing box body 1 is provided with a cooling fan cavity 20, and an axial flow cooling fan 11 is arranged on a section of the ventilator rotating shaft 13 positioned in the cooling fan cavity 20. The axial flow cooling fan 11 is composed of a fan main body 24, a fan mounting hole 25 is formed in the middle of the fan main body 24, a connecting key groove 27 is formed in the fan mounting hole 25, and a plurality of fan blade sets 26 are evenly distributed on the outer circumference of the fan main body 24. Air cooling channels 22 which are axially arranged along the rotating shaft 13 of the ventilator are respectively arranged on the box main body 16 of the bearing box body 1 and at positions corresponding to the groups of blades 26 of the axial flow cooling fan 11; the axial flow cooling fan 11 is further arranged on the ventilator rotating shaft 13 through the fan mounting hole 25 and the connecting key, and the cooling air generated by the fan blades 26 of the axial flow cooling fan 11 is enabled to form continuous through flow on the outer wall of the bearing box body 1 by utilizing the air cooling channel 22, so that the flow of the ambient air around the box body is accelerated, and the heat dissipation efficiency of the box body is higher; meanwhile, the blown air flow can also avoid the influence of the overheated air generated by heat dissipation on the box body. The outside of the box main body 16 of the bearing box body 1 is also provided with a plurality of groups of radiating fins 23 which are axially arranged along the rotating shaft 13 of the ventilator, so that the radiating effect of the outer surface of the casting of the bearing box body 1 is improved by utilizing a plurality of convex radiating fins 23 arranged on the box main body 16.
An oil storage chamber 21 is further provided inside the tank main body 16, between the bearing chamber 17 and the cooling fan chamber 20, an oil pool 14 is provided at a lower portion of the oil storage chamber 21, and an oil level indicator 12 is provided at a position corresponding to the oil pool 14 on an outer wall of the tank main body 16. An oil slinger 10 is arranged on one side, close to the rolling bearing 7, of a section of ventilator rotating shaft 13 positioned in the oil storage cavity 21, and the lower part of the oil slinger 10 is immersed in the oil pool 14; and an oil groove 15 for recovering lubricating oil is provided above the oil sump 14 and below the ventilator rotating shaft 13. Meanwhile, an oil thrower 6 is arranged on the other side, close to the axial flow cooling fan 11, of the section of the ventilator rotating shaft 13 in the oil storage cavity 21; an oil seal 4 with a gland 2 on the outer side is arranged between the oil storage chamber 21 and the cooling fan chamber 20. In order to adjust the pressure in the oil storage cavity 21, the box main body 16 of the bearing box body 1 is also provided with an air release vent hole 19 communicated with the oil storage cavity 21, and the air release vent hole 19 is provided with a safety plug 9 so as to improve the use safety of the device.
When the air-cooled rolling bearing box of the centrifugal fan is used, the axial flow cooling fan 11 in the cooling fan cavity 20 rotates along with the rotating shaft 13 of the fan, and the cooling air generated by the fan blades 26 of the axial flow cooling fan 11 is enabled to form continuous through flow on the outer wall of the box body 1 of the bearing box by utilizing the air-cooled channel 22, so that the flow of the ambient air around the box body is accelerated, and the heat dissipation efficiency of the box body is higher; meanwhile, the plurality of groups of raised radiating fins 23 arranged outside the bearing box body 1 can further improve the radiating effect of the outer surface of the casting of the bearing box body 1. The oil slinger 10 which is positioned in the oil storage cavity 21 and on the rotating shaft 13 of the ventilator rotates slowly by utilizing the friction force between the oil slinger and the rotating shaft, and brings the lubricating oil with the bottom part immersed in the oil pool 14 upwards and drops the lubricating oil into the oil groove 15; the height of the oil groove 15 is the same as the oil bath immersion height of the rolling bearing 7, an oil return path is arranged at the end cover 5 of the box body, the leakage of lubricating oil is prevented through the gland 2 and the sealing ring 3, and then a small circulating path is formed in the bearing box body 1, so that high-temperature oil generated by lubricating the rolling bearing 7 can quickly flow back to the oil tank. This centrifugal fan's forced air cooling antifriction bearing case is under the high temperature operational environment of no cooling water, through inside and outside multiple special construction form, increases oil cooling efficiency, effectively cools down antifriction bearing 7 and bearing box, ensures the safety of fan, steady operation.
Claims (6)
1. The utility model provides an air-cooled rolling bearing box of centrifugal fan, includes bearing box (1), its characterized in that: the bearing box body (1) is composed of a box main body (16), a ventilator rotating shaft (13) penetrates through a through cavity in the middle of the box main body (16), a bearing cavity (17) is formed in one end of the box main body (16), and a rolling bearing (7) is arranged in the bearing cavity (17); an end cover (5) is arranged on the outer side of the bearing cavity (17), an oil seal (4) is arranged on the outer side of the end cover (5), and a gland (2) is arranged on the outer side of the oil seal (4); an oil thrower (6) is arranged on a section of ventilator rotating shaft (13) positioned in the end cover (5); a cooling fan cavity (20) is formed in the other end of the box main body (16), and an axial flow cooling fan (11) is arranged on a section of a fan rotating shaft (13) located in the cooling fan cavity (20); an oil storage cavity (21) is further arranged inside the box main body (16) and between the bearing cavity (17) and the cooling fan cavity (20), and an oil pool (14) is arranged at the lower part of the oil storage cavity (21); an oil slinger (10) is arranged on one side, close to the rolling bearing (7), of a section of ventilator rotating shaft (13) positioned in the oil storage cavity (21), the lower part of the oil slinger (10) is immersed into an oil pool (14), and an oil groove (15) for recovering lubricating oil is arranged at the position above the oil pool (14) and below the ventilator rotating shaft (13); meanwhile, an oil thrower (6) is arranged on one side, close to the axial flow cooling fan (11), of a section of ventilator rotating shaft (13) positioned in the oil storage cavity (21); an oil seal (4) with a gland (2) at the outer side is arranged between the oil storage cavity (21) and the cooling fan cavity (20).
2. The air-cooled rolling bearing housing for a centrifugal ventilator according to claim 1, characterized in that: the axial flow cooling fan (11) arranged in the cooling fan cavity (20) of the bearing box body (1) is composed of a fan main body (24), a fan mounting hole (25) is formed in the middle of the fan main body (24), a connecting key slot (27) is formed in the fan mounting hole (25), and a plurality of groups of fan blades (26) are uniformly distributed on the outer circumference of the fan main body (24); and air cooling channels (22) which are axially arranged along the rotating shaft (13) of the ventilator are respectively arranged on the box main body (16) of the bearing box body (1) and at positions corresponding to the fan blades (26) of the axial flow cooling fan (11).
3. The air-cooled rolling bearing housing for a centrifugal ventilator according to claim 1, characterized in that: a rotating shaft through hole (29) is formed in the middle of the oil seal (4), a clamping convex edge (30) which is matched and connected with the end cover (5) is arranged on the outer side of the oil seal (4), and a sealing cavity (28) for arranging a sealing ring (3) is formed in one end, in contact with the gland (2), of the oil seal (4); an oil return groove (31) is formed in the outer side of the other end of the oil seal (4) and is matched and connected with an oil seal clamping groove (32) in the end portion of the oil thrower (6); an oil return hole (33) is further formed in the oil return groove (31).
4. The air-cooled rolling bearing housing for a centrifugal ventilator according to claim 1, characterized in that: the bearing box is characterized in that a plurality of groups of radiating fins (23) which are axially arranged along the rotating shaft (13) of the ventilator are arranged outside the box main body (16) of the bearing box body (1).
5. The air-cooled rolling bearing housing for a centrifugal ventilator according to claim 1, characterized in that: and a spare oil path (18) communicated with the bearing cavity (17) is arranged on a box main body (16) of the bearing box body (1).
6. The air-cooled rolling bearing housing for a centrifugal ventilator according to claim 1, characterized in that: and a deflation vent hole (19) communicated with the oil storage cavity (21) is further formed in the box body (16) of the bearing box body (1), and a safety plug (9) is arranged on the deflation vent hole (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922309628.0U CN211343464U (en) | 2019-12-20 | 2019-12-20 | Air-cooled rolling bearing box of centrifugal ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922309628.0U CN211343464U (en) | 2019-12-20 | 2019-12-20 | Air-cooled rolling bearing box of centrifugal ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211343464U true CN211343464U (en) | 2020-08-25 |
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ID=72133316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922309628.0U Active CN211343464U (en) | 2019-12-20 | 2019-12-20 | Air-cooled rolling bearing box of centrifugal ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211343464U (en) |
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2019
- 2019-12-20 CN CN201922309628.0U patent/CN211343464U/en active Active
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