CN204827930U - Roots vacuum pump sealing device - Google Patents
Roots vacuum pump sealing device Download PDFInfo
- Publication number
- CN204827930U CN204827930U CN201520559469.9U CN201520559469U CN204827930U CN 204827930 U CN204827930 U CN 204827930U CN 201520559469 U CN201520559469 U CN 201520559469U CN 204827930 U CN204827930 U CN 204827930U
- Authority
- CN
- China
- Prior art keywords
- oil
- labyrinth seal
- ptfe
- seal ring
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007789 sealing Methods 0.000 title claims abstract description 41
- 239000003921 oil Substances 0.000 claims abstract description 68
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 27
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 27
- 238000005524 ceramic coating Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 239000012208 gear oil Substances 0.000 claims description 21
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000314 lubricant Substances 0.000 description 8
- 230000002411 adverse Effects 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000004291 uterus Anatomy 0.000 description 1
Abstract
The utility model belongs to the technical field of the vacuum pump device is sealed, in particular to roots vacuum pump sealing device, including keeping off the oil jacket, keep off the oil jacket and install on the transmission shaft, keep off oil jacket periphery suit PTFE oil blanket, keep off and set up ceramic coating between oil jacket and the PTFE oil blanket, ceramic coating sets up on the surface that keeps off the oil jacket, and PTFE oil blanket outer end sets up and keeps off line of oils's piece. Simple structure is reasonable, the easy realization, and PTFE oil blanket and ceramic coating set up the life that can increase the sealing member and improve sealed effect, prolong the life of complete machine.
Description
Technical field
The utility model relates to a kind of Roots vacuum pump sealing apparatus, belongs to vacuum pump apparatus technical field of sealing technology.
Background technique
Good sealing must be ensured between the rotor of Roots pump and gear-box, gear, bearing, bearing support etc. is had in gear-box, gear, bearing must lubricate, after the complete bearing of oil lubrication, preventing it from entering in rotor, in the past, is adopt rubber lip sealing, rubber can not be dry grinded, so must carry out lubrication, otherwise be easy to damage, sealing effect is bad on the one hand, on the other hand, in highly corrosive industries such as chemical industry, rubber is easy to be corroded, thus loses seal action, cause few oil, thus cause bearing to damage.
Model utility content
The technical problems to be solved in the utility model is: provide a kind of structure simple, improve sealing effect, extend the Roots vacuum pump sealing apparatus of seal durability.
Roots vacuum pump sealing apparatus described in the utility model, comprise gear oil jacket, gear oil jacket is arranged on transmission shaft, gear oil jacket periphery suit PTFE oil sealing, between gear oil jacket and PTFE oil sealing, ceramic coating is set, ceramic coating is arranged on the outer surface of gear oil jacket, and PTFE oil sealing outer end arranges the oily assembly of gear.
PTFE (teflon) oil sealing is adopted to coordinate with gear oil jacket, gear oil jacket is enclosed within transmission shaft, the surface of gear oil jacket scribbles one deck ceramic coating, PTFE oil sealing and ceramic coating dry friction, PTFE has self-lubricating function, does not therefore need to use lubricant oil, so do not need lubricant oil to guide to this position, before lubricant oil is blocked in, can sealing effect be improved simultaneously and increase the service life.Outer end in the utility model refers to away from rotor, near one end of bearing,
Described gear oil assembly comprises the labyrinth seal seat being arranged on PTFE oil sealing periphery, the exterior edge face place of labyrinth seal seat is provided with labyrinth seal ring, labyrinth mouth is provided with between labyrinth seal seat and labyrinth seal ring, labyrinth seal ring is arranged to inclined-plane at fan's uteri position, labyrinth seal ring is arranged on transmission shaft, labyrinth seal ring periphery is provided with the second cavity, the exterior edge face place of labyrinth seal ring is provided with disc, disc periphery arranges the first cavity, and the drainback passage communicated with oil pocket is all arranged at the bottom of the first cavity and the second cavity.Splendid attire lubricant oil in oil pocket.
The oil retaining part of PTFE oil sealing exterior edge face divides, and altogether can be divided into level Four gear oil, the first order: lubricant oil enters bearing lubrication, then enters disc, and along with the rotation of disc, lubricant oil is thrown out of, and the drainback passage entering disc after falling flows out.The second level: the oil do not thrown away along labyrinth seal ring upwards, and then gets rid of oil, the drainback passage that the oil fallen enters labyrinth seal ring flows out.The third level: also have the oil that small part is not thrown out of, drop in the mouth of labyrinth, labyrinth seal seat is static, because labyrinth mouthpiece has certain depth, be difficult to climb oil (namely oil is not easy to fill up), the oil in the mouth of labyrinth annularly falls, and enters the drainback passage of labyrinth seal ring.The fourth stage: labyrinth seal ring has individual adverse slope face, remaining few part oil can climb out of labyrinth mouth, now, again gets rid of oil by adverse slope face, oil is got on along domatic, avoids entering in PTFE oil sealing from the gap between labyrinth seal ring and labyrinth seal seat.
Described PTFE oil sealing interior edge face place arranges felt, and felt is arranged on ceramic coating periphery.Felt plays the dirt such as attract dust, chip.
The beneficial effects of the utility model are:
Simple and reasonable, easily realize, working life that the arranging of PTFE oil sealing and ceramic coating can increase Sealing and improve sealing effect, extend the working life of complete machine.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, transmission shaft 2, disc 3, labyrinth seal ring 4, labyrinth mouth 5, labyrinth seal seat 6, felt 7, PTFE oil sealing 8, ceramic coating 9, gear oil jacket 10, second cavity 11, drainback passage 12, first cavity 13, oil pocket.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Figure 1, Roots vacuum pump sealing apparatus described in the utility model, comprise gear oil jacket 9, gear oil jacket 9 is arranged on transmission shaft 1, gear oil jacket 9 periphery suit PTFE oil sealing 7, arrange ceramic coating 8 between gear oil jacket 9 and PTFE oil sealing 7, ceramic coating 8 is arranged on the outer surface of gear oil jacket 9, and PTFE oil sealing 7 outer end arranges the oily assembly of gear.Keep off oily assembly and comprise the labyrinth seal seat 5 being arranged on PTFE oil sealing 7 periphery, the exterior edge face place of labyrinth seal seat 5 is provided with labyrinth seal ring 3, labyrinth mouth 4 is provided with between labyrinth seal seat 5 and labyrinth seal ring 3, labyrinth seal ring 3 is arranged to inclined-plane at labyrinth mouth 4 place, labyrinth seal ring 3 is arranged on transmission shaft 1, labyrinth seal ring 3 periphery is provided with the second cavity 10, the exterior edge face place of labyrinth seal ring 3 is provided with disc 2, the drainback passage 11 communicated with oil pocket 13 is all arranged at the bottom that disc 2 periphery arranges the first cavity 12, first cavity 12 and the second cavity 10.PTFE oil sealing 7 interior edge face place arranges felt 6, and felt 6 is arranged on ceramic coating 8 periphery.
Working procedure:
Lubricant oil enters bearing lubrication, then enters disc 2 by filler opening, and along with the rotation of disc 2, lubricant oil is thrown out of, and the drainback passage 11 entering disc 2 after falling flows out.The oil do not thrown away along labyrinth seal ring 3 upwards, gets rid of oil again, and the drainback passage 11 that the oil fallen enters labyrinth seal ring 3 flows out.Also have the oil that small part is not thrown out of, drop in labyrinth mouth 4, labyrinth seal seat 5 is static, because labyrinth mouth 4 has certain depth, be difficult to climb oil (namely oil is not easy to fill up), the oil in labyrinth mouth 4 annularly falls, and enters the drainback passage 11 of labyrinth seal ring 3.Labyrinth seal ring 3 there is individual inclined-plane (adverse slope face), remaining few part oil can climb out of labyrinth mouth 4, now, again gets rid of oil by adverse slope face, oil is got on along domatic, avoids entering in PTFE oil sealing 7 from the gap between labyrinth seal ring 3 and labyrinth seal seat 5.
Claims (3)
1. a Roots vacuum pump sealing apparatus, comprise gear oil jacket (9), gear oil jacket (9) is arranged on transmission shaft (1), it is characterized in that: gear oil jacket (9) periphery suit PTFE oil sealing (7), between gear oil jacket (9) and PTFE oil sealing (7), ceramic coating (8) is set, ceramic coating (8) is arranged on the outer surface of gear oil jacket (9), and PTFE oil sealing (7) outer end arranges the oily assembly of gear.
2. Roots vacuum pump sealing apparatus according to claim 1, it is characterized in that: keep off oily assembly and comprise the labyrinth seal seat (5) being arranged on PTFE oil sealing (7) periphery, the exterior edge face place of labyrinth seal seat (5) is provided with labyrinth seal ring (3), labyrinth mouth (4) is provided with between labyrinth seal seat (5) and labyrinth seal ring (3), labyrinth seal ring (3) is arranged to inclined-plane at labyrinth mouth (4) place, labyrinth seal ring (3) is arranged on transmission shaft (1), labyrinth seal ring (3) periphery is provided with the second cavity (10), the exterior edge face place of labyrinth seal ring (3) is provided with disc (2), disc (2) periphery arranges the first cavity (12), the drainback passage (11) communicated with oil pocket (13) is all arranged at the bottom of the first cavity (12) and the second cavity (10).
3. Roots vacuum pump sealing apparatus according to claim 1 and 2, is characterized in that: PTFE oil sealing (7) interior edge face place arranges felt (6), and felt (6) is arranged on ceramic coating (8) periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520559469.9U CN204827930U (en) | 2015-07-30 | 2015-07-30 | Roots vacuum pump sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520559469.9U CN204827930U (en) | 2015-07-30 | 2015-07-30 | Roots vacuum pump sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204827930U true CN204827930U (en) | 2015-12-02 |
Family
ID=54685538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520559469.9U Active CN204827930U (en) | 2015-07-30 | 2015-07-30 | Roots vacuum pump sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204827930U (en) |
-
2015
- 2015-07-30 CN CN201520559469.9U patent/CN204827930U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 255090 Shandong Province, Zibo city Zhangdian District Ma Shang Zhen small sets of Industrial Park Patentee after: Shandong Bozhong Vacuum Technology Co.,Ltd. Address before: 255090 Shandong Province, Zibo city Zhangdian District Ma Shang Zhen small sets of Industrial Park Patentee before: SHANDONG BOZHONG VACUUM EQUIPMENT Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230302 Address after: No. 10, Business Room, No. G4, China Fortune Ceramic City, Beijing Road, Zibo Economic Development Zone, Shandong Province, 255000 Patentee after: Bozhong (Shandong) Industrial Equipment Co.,Ltd. Address before: Xiaotao Industrial Park, Mashang Town, Zhangdian District, Zibo City, Shandong Province Patentee before: Shandong Bozhong Vacuum Technology Co.,Ltd. |