CN220870043U - Gear box double-screw sealing mechanism for open mill - Google Patents
Gear box double-screw sealing mechanism for open mill Download PDFInfo
- Publication number
- CN220870043U CN220870043U CN202322930489.XU CN202322930489U CN220870043U CN 220870043 U CN220870043 U CN 220870043U CN 202322930489 U CN202322930489 U CN 202322930489U CN 220870043 U CN220870043 U CN 220870043U
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- CN
- China
- Prior art keywords
- inner hole
- hole
- input
- oil collecting
- oil
- Prior art date
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 30
- 230000008878 coupling Effects 0.000 claims abstract description 5
- 238000010168 coupling process Methods 0.000 claims abstract description 5
- 238000005859 coupling reaction Methods 0.000 claims abstract description 5
- 239000012466 permeate Substances 0.000 claims description 4
- 239000003921 oil Substances 0.000 abstract description 36
- 239000010687 lubricating oil Substances 0.000 abstract description 9
- 238000007599 discharging Methods 0.000 abstract description 3
- 230000002457 bidirectional effect Effects 0.000 description 6
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to a gear box double-spiral sealing mechanism for an open mill, which comprises a box body, an input shaft, an input motor and a through cover, wherein two ends of the input shaft are supported in the box body by input bearings, the input shaft is connected with the input motor through a coupling, a double-spiral sealing ring is arranged between the input bearing close to the input motor and the through cover, an inner hole is arranged on the double-spiral sealing ring corresponding to the input shaft, an oil collecting cavity is arranged in the middle of the inner hole, the inner hole is divided into a left inner hole and a right inner hole by the oil collecting cavity, a right spiral groove is arranged in the right inner hole, a left spiral groove is arranged in the left inner hole, and oil leakage holes are distributed on the radial circumference of the oil collecting cavity. According to the double-spiral sealing ring, the spiral grooves with opposite directions are formed in the two sides of the oil collecting cavity, and the oil discharging holes are formed in the oil collecting cavity, so that oil can be discharged into the box body during forward rotation and reverse rotation of the input shaft, and the equipment failure risk caused by leakage of lubricating oil is reduced.
Description
Technical Field
The utility model relates to the technical field of gear box sealing, in particular to a gear box double-screw sealing mechanism for an open mill.
Background
The open mill gear box in the existing market is sealed by adopting a skeleton oil seal, and because the skeleton oil seal is short in service life and easy to age, when the aged gear box runs, lubricating oil in the gear box easily flows to the skeleton oil seal through a bearing, leaks to the outside of the gear box through an oil seal lip, and causes environmental pollution and insufficient lubricating oil in the gear box to cause equipment failure. The patent number CN202123217439.4 discloses a high-efficient sealed gear box of power input, sets up spiral seal ring between lid and bearing that permeates, and fluid flows back to the box along the unidirectional spiral groove in, prevents the oil leak, but this kind of structure indicates to be applicable to unidirectional rotation, still has the oil leak risk when the frequent bidirectional rotation of motor.
Disclosure of Invention
The utility model aims to overcome the defects, and provides the double-screw sealing mechanism for the gear box of the open mill, which ensures that oil can be discharged into the box body during forward rotation and reverse rotation of an input shaft, reduces the equipment failure risk caused by leakage of lubricating oil, and prolongs the service life of the gear box.
The purpose of the utility model is realized in the following way:
The utility model provides a gear box double helix sealing mechanism for mill, includes box, input shaft, input motor and cover that permeates, the input shaft both ends are supported in the box by input bearing, the input shaft passes through the coupling joint input motor, is equipped with double helix sealing ring between the input bearing that is close to input motor and the cover that permeates, double helix sealing ring corresponds the input shaft and is equipped with the hole, the hole middle part is equipped with the oil collecting chamber, the oil collecting chamber separates into left hole and right hole with the hole, and right hole is equipped with right helical groove, and left hole is equipped with left helical groove, and it has the oil drain hole to distribute at oil collecting chamber radial circumference.
Preferably, the aperture of the oil collecting cavity is larger than that of the inner hole.
Preferably, the oil collecting cavity is communicated with the left inner hole and the right inner hole, and the three are positioned on the same axis.
Preferably, the two end surfaces of the inner hole are provided with avoiding grooves.
The beneficial effects of the utility model are as follows:
According to the double-spiral sealing ring, the spiral grooves with opposite directions are formed in the two sides of the oil collecting cavity, the oil discharging holes are formed in the oil collecting cavity, oil can be discharged into the box body during forward rotation and reverse rotation of the input shaft, the equipment failure risk caused by leakage of lubricating oil is reduced, the service life of the gear box is prolonged, the maintenance cost is reduced, and the double-spiral sealing ring is suitable for frequent bidirectional rotation of a motor.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic cross-sectional structure of a double spiral seal ring.
Wherein: a case 1; an input shaft 2; an input motor 3; a transparent cover 4; an input bearing 5; a double spiral seal ring 6; an oil collecting cavity 6.1; a left inner hole 6.2; a right inner hole 6.3; right helical groove 6.4; left helical groove 6.5; oil drain hole 6.6; avoiding the groove 6.7.
Detailed Description
Referring to fig. 1 and 2, the utility model relates to a gear box double-screw sealing mechanism for an open mill, which comprises a box body 1, an input shaft 2, an input motor 3 and a through cover 4, wherein two ends of the input shaft 2 are supported in the box body 1 by an input bearing 5, the input shaft 2 is connected with the input motor 3 through a coupling, the through cover 4 is arranged at the inner side of the coupling, a double-screw sealing ring 6 is arranged between the input bearing 5 close to the input motor 3 and the through cover 4, the double-screw sealing ring 6 is sleeved on the input shaft 2, an inner hole is arranged corresponding to the input shaft 2 in the double-screw sealing ring 6, an oil collecting cavity 6.1 is arranged in the middle of the inner hole, the oil collecting cavity 6.1 divides the inner hole into a left inner hole 6.2 and a right inner hole 6.3, the right inner hole 6.3 is provided with a right spiral groove 6.4, the left inner hole 6.2 is provided with a left spiral groove 6.5, the aperture of the oil collecting cavity 6.1 is larger than the inner hole, and discharge holes 6.6 are distributed at the radial circumference of the oil collecting cavity 6.1, and each discharge hole 6 is communicated with the box body 1.
The oil collecting cavity 6.1 is communicated with the left inner hole 6.2 and the right inner hole 6.3, and the three are positioned on the same axis.
The two end faces of the inner hole are respectively provided with an avoidance groove 6.7, so that the double-spiral sealing ring 6 is guaranteed to only contact with the outer ring of the input bearing 5 and not contact with the inner ring of the input bearing 5, and the double-spiral sealing ring 6 does not rotate when the input shaft 2 rotates.
Taking the right spiral groove of the bidirectional spiral sealing ring 6 as the inner side and the left spiral groove as the outer side for installation as an example, when the input shaft 2 runs anticlockwise, the bidirectional spiral sealing ring 6 pushes the lubricating oil to flow into the gear box near the right spiral groove 6.4 at the inner side of the gear box; when the input shaft 2 runs clockwise, the left spiral groove 6.5 of the bidirectional spiral sealing ring 6, which is close to the outer side of the gear box, pushes lubricating oil to flow into the gear box from the oil collecting cavity 6.1 through the oil discharging hole 6.6, so that the problem of lubricating oil leakage of the gear caused by oil seal aging is solved.
Because the spiral grooves on the two sides of the oil collecting cavity 6.1 are opposite in rotation direction, no matter the bidirectional spiral sealing ring is positively or reversely installed, lubricating oil can be always returned into the box body.
In addition to the above embodiments, the present utility model also includes other embodiments, and all technical solutions that are formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present utility model.
Claims (4)
1. The utility model provides a mill is gear box double helix sealing mechanism for machine, includes box, input shaft, input motor and thoroughly covers, the input shaft both ends are supported in the box by input bearing, the input shaft passes through coupling joint input motor, its characterized in that: be equipped with the double helix sealing ring between the input bearing that is close to input motor and the lid that permeates, the double helix sealing ring corresponds the input shaft and is equipped with the hole, the hole middle part is equipped with the oil collecting chamber, the oil collecting chamber separates into left hole and right hole with the hole, and right hole is equipped with right helical groove, and left hole is equipped with left helical groove, has the oil drain hole at oil collecting chamber radial circumference distribution.
2. The gear box double-screw sealing mechanism for open mill according to claim 1, wherein: the aperture of the oil collecting cavity is larger than the inner hole.
3. The gear box double-screw sealing mechanism for open mill according to claim 1 or 2, characterized in that: the oil collecting cavity is communicated with the left inner hole and the right inner hole, and the left inner hole, the right inner hole and the oil collecting cavity are positioned on the same axis.
4. The gear box double-screw sealing mechanism for open mill according to claim 1, wherein: and avoidance grooves are formed in two end faces of the inner hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322930489.XU CN220870043U (en) | 2023-10-31 | 2023-10-31 | Gear box double-screw sealing mechanism for open mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322930489.XU CN220870043U (en) | 2023-10-31 | 2023-10-31 | Gear box double-screw sealing mechanism for open mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220870043U true CN220870043U (en) | 2024-04-30 |
Family
ID=90816682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322930489.XU Active CN220870043U (en) | 2023-10-31 | 2023-10-31 | Gear box double-screw sealing mechanism for open mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220870043U (en) |
-
2023
- 2023-10-31 CN CN202322930489.XU patent/CN220870043U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |