CN219809136U - Fastening device of shaft sleeve for lip seal in Roots vacuum pump - Google Patents
Fastening device of shaft sleeve for lip seal in Roots vacuum pump Download PDFInfo
- Publication number
- CN219809136U CN219809136U CN202320119110.4U CN202320119110U CN219809136U CN 219809136 U CN219809136 U CN 219809136U CN 202320119110 U CN202320119110 U CN 202320119110U CN 219809136 U CN219809136 U CN 219809136U
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- Prior art keywords
- shaft sleeve
- fastening
- vacuum pump
- roots vacuum
- locking pad
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- 238000007789 sealing Methods 0.000 claims abstract description 33
- 230000000694 effects Effects 0.000 abstract description 6
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000003905 agrochemical Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- -1 metallurgy Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Landscapes
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model discloses a fastening device of a shaft sleeve for a lip seal in a Roots vacuum pump, and relates to the technical field of Roots vacuum pumps. The novel centrifugal pump comprises a Roots vacuum pump body, wherein a bearing body is arranged on the inner side of the Roots vacuum pump body, a sealing locking pad is clamped on one side of the bearing body, a shaft sleeve body is arranged on one side, away from the bearing body, of the sealing locking pad, and a fastening mechanism is arranged in the sealing locking pad. According to the utility model, when the shaft sleeve body is arranged to extrude the sealing locking pad, the fixing part at the tail end of the connecting plate can be pushed inwards, and the position of the fastening part can be adjusted due to the fact that the adjusting rotating shaft is communicated with the positioning rod to be matched with the fastening rod, so that the lip-shaped sealing pad at the lower end of the fastening part can be clamped with the positioning groove at the upper end of the shaft sleeve body, further, the shaft sleeve body can be prevented from being deviated to influence the fastening effect of the shaft sleeve, and meanwhile, the arranged sealing piece can further limit the shaft sleeve body, and the stability of the shaft sleeve body can be ensured.
Description
Technical Field
The utility model belongs to the technical field of Roots vacuum pumps, and particularly relates to a fastening device of a shaft sleeve for lip-shaped sealing in a Roots vacuum pump.
Background
The Roots vacuum pump is a positive displacement vacuum pump in which two vane-shaped rotors which synchronously rotate in opposite directions are arranged in the pump, and fine gaps are arranged between the rotors and the inner wall of the pump shell and are not contacted with each other. Roots vacuum pumps have been examined for long-term operation in petroleum, chemical, plastic, agricultural chemicals, turbine rotor dynamic balance, aerospace space simulation and other devices, so they should be widely popularized and applied in China. And is also widely used in petroleum, chemical, metallurgy, textile and other industries.
The patent number of the compound lip seal structure of the shaft seal in the Roots pump is CN211314547U, which specifically discloses: be provided with first lip seal, and first lip seal is the skeleton oil blanket of the good fluororubber lip of elasticity, in one side of contact lubricating oil, effectively block the leakage of lubricating oil, be provided with the second lip seal, and the second lip seal comprises stainless steel skeleton and the PTFE seal lip that is applicable to dry friction, and Roots vacuum pump relies on the synchronous, counter-rotating bulldozing effect of a pair of leaf rotor in the pump chamber to remove gas and realize the vacuum pump of bleeding, and just can lead to the fastening effect of axle sleeve poor through the lip seal, greatly influence follow-up Roots pump normal operating.
Disclosure of Invention
The utility model provides a fastening device of a shaft sleeve for lip seal in a Roots vacuum pump, which can effectively solve the problems in the prior art.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the utility model relates to a fastening device of a shaft sleeve for lip seal in a Roots vacuum pump, which comprises a Roots vacuum pump body, wherein a bearing body is arranged on the inner side of the Roots vacuum pump body, a sealing locking pad is clamped on one side of the bearing body, a shaft sleeve body is arranged on one side, far away from the bearing body, of the sealing locking pad, a fastening mechanism is arranged in the sealing locking pad, and an inner shaft body is clamped on the inner side of the shaft sleeve body.
Further, one side of the bearing body is provided with a limiting groove, and the limiting groove is clamped with the sealing locking pad.
Further, fastening mechanism includes connecting plate, fixed part, regulation pivot and locating lever, connecting plate slip joint is in sealed locking pad inside one side that is close to the axle sleeve body, fixed part fixes the tail end at the connecting plate, the regulation pivot is the symmetry setting and keeps away from one side of connecting plate at fixed part inner wall, the locating lever is fixed in the outside of adjusting the pivot, and sliding connection between locating lever and the sealed locking pad inner wall.
Further, the lower extreme of locating lever is fixed with the fastening rod, the lower terminal surface of fastening rod is fixed with the fastening part and constitutes T font structure between fastening rod and the fastening part, the positioning groove has been seted up to the surface of axle sleeve body, and positioning groove and fastening part looks joint, the lower extreme of fastening part is the symmetry and is provided with lip seal pad.
Further, a sealing piece is arranged on the outer side of the inner shaft body, and the other end of the sealing piece is tightly attached to the shaft sleeve body.
The utility model has the following beneficial effects:
according to the utility model, when the shaft sleeve body is arranged to extrude the sealing locking pad, the fixing part at the tail end of the connecting plate can be pushed inwards, and the position of the fastening part can be adjusted due to the fact that the adjusting rotating shaft is communicated with the positioning rod to be matched with the fastening rod, so that the lip-shaped sealing pad at the lower end of the fastening part can be clamped with the positioning groove at the upper end of the shaft sleeve body, further, the shaft sleeve body can be prevented from being deviated to influence the fastening effect of the shaft sleeve, and meanwhile, the arranged sealing piece can further limit the shaft sleeve body, and the stability of the shaft sleeve body can be ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a Roots vacuum pump of the present utility model;
FIG. 2 is an enlarged schematic view of a portion of the present utility model at A;
FIG. 3 is a schematic diagram of the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1. roots vacuum pump body; 2. a bearing body; 3. a limit groove; 4. sealing and locking the pad; 5. a sleeve body; 6. a connecting plate; 7. a fixing member; 8. adjusting the rotating shaft; 9. a positioning rod; 10. a fastening rod; 11. a fastening member; 12. a positioning groove; 13. an inner shaft body; 14. and a seal.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Referring to fig. 1-3, the utility model discloses a fastening device of a shaft sleeve for lip seal in a Roots vacuum pump, which comprises a Roots vacuum pump body 1, wherein a bearing body 2 is arranged on the inner side of the Roots vacuum pump body 1, a sealing locking pad 4 is clamped on one side of the bearing body 2, a shaft sleeve body 5 is arranged on one side, far away from the bearing body 2, of the sealing locking pad 4, a fastening mechanism is arranged in the sealing locking pad 4, and an inner shaft body 13 is clamped on the inner side of the shaft sleeve body 5.
Wherein as shown in fig. 1, one side of bearing body 2 is provided with spacing recess 3, and spacing recess 3 and sealed locking pad 4 looks joint, specifically, can carry out spacingly to the position of sealed locking pad 4 through spacing recess 3 that set up, can avoid sealed locking pad 4 to appear shifting, and sealed locking pad 4 is connected with bearing body 2 simultaneously, can not influence bearing body 2 normal use.
As shown in fig. 1-2, the fastening mechanism includes a connecting plate 6, a fixing part 7, an adjusting rotating shaft 8 and a positioning rod 9, the connecting plate 6 is slidably clamped on one side, close to the shaft sleeve body 5, inside the sealing locking pad 4, the fixing part 7 is fixed at the tail end of the connecting plate 6, the adjusting rotating shaft 8 is symmetrically arranged on one side, far away from the connecting plate 6, of the inner wall of the fixing part 7, the positioning rod 9 is fixed on the outer side of the adjusting rotating shaft 8, the positioning rod 9 is slidably connected with the inner wall of the sealing locking pad 4, specifically, when the shaft sleeve body 5 is arranged to squeeze the sealing locking pad 4, the fixing part 7 at the tail end of the connecting plate 6 can be pushed in the other, and the position of the fastening part 11 can be adjusted due to the fact that the adjusting rotating shaft 8 is communicated with the positioning rod 9 and the fastening rod 10, and then the shaft sleeve body 5 can be locked.
As shown in fig. 1-2, a fastening rod 10 is fixed at the lower end of the positioning rod 9, a fastening component 11 is fixed at the lower end surface of the fastening rod 10, a T-shaped structure is formed between the fastening rod 10 and the fastening component 11, a positioning groove 12 is formed on the outer surface of the shaft sleeve body 5, the positioning groove 12 is clamped with the fastening component 11, lip gaskets are symmetrically arranged at the lower end of the fastening component 11, specifically, the lip gaskets at the lower end of the fastening component 11 are clamped with the positioning groove 12 at the upper end of the shaft sleeve body 5, and further, the shaft sleeve body 5 is prevented from shifting, so that the fastening effect of the shaft sleeve is affected.
As shown in fig. 1-3, a sealing element 14 is disposed on the outer side of the inner shaft body 13, and the other end of the sealing element 14 is tightly attached to the shaft sleeve body 5, specifically, the disposed sealing element 14 can further limit the shaft sleeve body 5, so that stability of the shaft sleeve body 5 can be ensured.
Working principle: firstly, the sealing locking pad 4 is clamped with the limit groove 3 on one side of the bearing body 2, the shaft sleeve body 5 is inserted into the Roots vacuum pump body 1, the connecting plate 6 can extrude the fixing part 7, the fastening rod 10 can be pushed downwards by adjusting the matching of the rotating shaft 8 and the positioning rod 9, meanwhile, the sealing locking pad at the lower end of the fastening part 11 is clamped with the positioning groove 12 at the upper end of the shaft sleeve body 5, the shaft sleeve body 5 can be prevented from being deviated, the fastening effect of the shaft sleeve is influenced, the inner shaft body 13 is clamped with the shaft sleeve body 5, meanwhile, the sealing piece 14 can further limit the shaft sleeve body 5, and the stability of the shaft sleeve body 5 can be ensured.
The foregoing is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, and any modification, equivalent replacement, and improvement of some of the technical features described in the foregoing embodiments are all within the scope of the present utility model.
Claims (5)
1. The utility model provides a fastener of shaft sleeve for lip seal in roots vacuum pump, includes roots vacuum pump body (1), its characterized in that, the inboard of roots vacuum pump body (1) is provided with bearing body (2), one side joint of bearing body (2) has sealed locking pad (4), one side that sealed locking pad (4) kept away from bearing body (2) is provided with shaft sleeve body (5), the inside of sealed locking pad (4) is provided with fastening mechanism, the inboard joint of shaft sleeve body (5) has interior spindle (13).
2. The fastening device of the shaft sleeve for the lip seal in the roots vacuum pump according to claim 1, wherein a limit groove (3) is arranged on one side of the bearing body (2), and the limit groove (3) is clamped with the seal locking pad (4).
3. The fastening device of a shaft sleeve for a lip seal in a Roots vacuum pump according to claim 1, wherein the fastening mechanism comprises a connecting plate (6), a fixing part (7), an adjusting rotating shaft (8) and a positioning rod (9), the connecting plate (6) is slidably clamped at one side, close to a shaft sleeve body (5), inside a sealing locking pad (4), the fixing part (7) is fixed at the tail end of the connecting plate (6), the adjusting rotating shaft (8) is symmetrically arranged at one side, far away from the connecting plate (6), of the inner wall of the fixing part (7), the positioning rod (9) is fixed at the outer side of the adjusting rotating shaft (8), and the positioning rod (9) is slidably connected with the inner wall of the sealing locking pad (4).
4. The fastening device of a shaft sleeve for lip seal in a Roots vacuum pump according to claim 3, wherein a fastening rod (10) is fixed at the lower end of the positioning rod (9), a fastening part (11) is fixed at the lower end surface of the fastening rod (10), a T-shaped structure is formed between the fastening rod (10) and the fastening part (11), a positioning groove (12) is formed in the outer surface of the shaft sleeve body (5), the positioning groove (12) is clamped with the fastening part (11), and lip seals are symmetrically arranged at the lower end of the fastening part (11).
5. The fastening device of a shaft sleeve for lip seal in a roots vacuum pump according to claim 1, wherein a sealing member (14) is provided on the outer side of the inner shaft body (13), and the other end of the sealing member (14) is closely attached to the shaft sleeve body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320119110.4U CN219809136U (en) | 2023-02-06 | 2023-02-06 | Fastening device of shaft sleeve for lip seal in Roots vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320119110.4U CN219809136U (en) | 2023-02-06 | 2023-02-06 | Fastening device of shaft sleeve for lip seal in Roots vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219809136U true CN219809136U (en) | 2023-10-10 |
Family
ID=88214148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320119110.4U Active CN219809136U (en) | 2023-02-06 | 2023-02-06 | Fastening device of shaft sleeve for lip seal in Roots vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219809136U (en) |
-
2023
- 2023-02-06 CN CN202320119110.4U patent/CN219809136U/en active Active
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