CN110425225A - A kind of overhanging rotary shaft non-contact seal structure - Google Patents
A kind of overhanging rotary shaft non-contact seal structure Download PDFInfo
- Publication number
- CN110425225A CN110425225A CN201910822288.3A CN201910822288A CN110425225A CN 110425225 A CN110425225 A CN 110425225A CN 201910822288 A CN201910822288 A CN 201910822288A CN 110425225 A CN110425225 A CN 110425225A
- Authority
- CN
- China
- Prior art keywords
- rotary shaft
- transparent cover
- annular
- platform
- annular groove
- 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.)
- Pending
Links
- 230000013011 mating Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 210000002421 cell wall Anatomy 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 20
- 238000007789 sealing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6685—Details of collecting or draining, e.g. returning the liquid to a sump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7813—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for tapered roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/80—Labyrinth sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4476—Labyrinth packings with radial path
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
A kind of overhanging rotary shaft non-contact seal structure, it includes the overhanging rotary shaft being mounted in transmission case by bearing, round nut, big envelope, transparent cover, it is characterised in that: between the big envelope and the mating surface of transparent cover by process at least annular groove, platform constitute mutually nested non-contact seals pair together；The annular groove that processes between the transparent cover inner hole and overhanging rotary shaft by using the mode of clearance fit, platform structure constitute non-contact seals pair；The edge of the mating surface side of the transparent cover and big envelope is provided with annular oil blocking edge and annular oil groove, and the oil return notch that the annular oil groove is arranged by transparent cover lower part is connected to the drainback passage in transmission case.
Description
Technical field
The present invention relates to a kind of technical field of mechanical transmission, and in particular to a kind of overhanging rotary shaft non-contact seal structure.
Background technique
Currently, often use overhanging rotary shaft in mechanical equipment, due in the design and use of mechanical equipment, often
It is required that not only having guaranteed that lubricating oil did not leaked but also having avoided friction loss, this just needs a kind of overhanging rotary shaft non-contact seal structure.
Summary of the invention
The purpose of the present invention is exactly the shortcoming being directed in the presence of the above-mentioned prior art and provides a kind of overhanging rotation
Axis non-contact seal structure, structure of the invention can be kept away under the premise of guaranteeing that overhanging rotary shaft is grease proofing dust-proof with excellent sealing
Exempt from friction loss problem, has the advantages that sealed reliable, without mechanical friction, spaces compact, convenient for disassembly and assembly.
The purpose of the present invention can be realized by following technique measures:
Overhanging rotary shaft non-contact seal structure of the invention includes being mounted on transmission case by bearing, round nut, big envelope, transparent cover
Interior overhanging rotary shaft；Between the big envelope and the mating surface of transparent cover by process at least together annular groove, platform constitute phase
Mutually nested non-contact seals pair；It is processed between the transparent cover inner hole and overhanging rotary shaft by using the mode of clearance fit
Annular groove, platform structure constitute non-contact seals pair；The edge of the mating surface side of the transparent cover and big envelope is provided with annular
Oil blocking edge and annular oil groove, the drainback passage in oil return notch and transmission case that the annular oil groove is arranged by transparent cover lower part connect
It is logical.
Annular groove, the platform of non-contact seals pair mutually nested between the big envelope and transparent cover mating surface are constituted in the present invention
Longitudinal section be in mutually matched cone tank, platform structure, and be machined with several mutually matched rings along the surface of annular groove, platform
Slot forms several sections of noncontact seams.
The inner hole of the big envelope is linked by way of screw thread or interference fit with overhanging rotary shaft.Round spiral shell is compressed simultaneously
Mother plays the role of locking and loosens.
It is located at the annular groove of the non-contact seals pair between transparent cover inner hole in overhanging rotary shaft in the present invention, in platform
The bottom of annular groove is in conical protrusions, and the cell wall lower part for being located at the annular groove of transparent cover outer ring is machined with connection annular oil groove
Oil return hole.
Beneficial effects of the present invention are as follows:
Since the present invention is only by suitably opening up mutually matched annular on three overhanging rotary shaft, big envelope and transparent cover parts
Slot, platform technical measures are achieved that non-contact seals, and structure of the invention can guarantee overhanging rotary shaft tool compared with prior art
Friction loss problem is avoided under the premise of having excellent sealing, there is sealed reliable, without mechanical friction, spaces compact, disassembly dress side
Just the advantages of.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
In figure: 1, overhanging rotary shaft, 2, big envelope, 3, round nut, 4, transparent cover.
Specific embodiment
The present invention is further described below with reference to embodiment (attached drawing):
As shown in Figure 1, overhanging rotary shaft non-contact seal structure of the invention includes passing through bearing, round nut 3, big envelope 2, transparent cover
4 are mounted on the overhanging rotary shaft 1 in transmission case；Between the big envelope 2 and the mating surface of transparent cover 4 by process at least together
Annular groove, platform constitute mutually nested non-contact seals pair；By using gap between 4 inner hole of transparent cover and overhanging rotary shaft
Annular groove that the mode of cooperation processes, platform structure constitute non-contact seals pair；The mating surface side of the transparent cover 4 and big envelope 2
Edge be provided with annular oil blocking edge sum number circle annular oil groove, the oil return notch and pass that the annular oil groove is arranged by lower part
Drainback passage in dynamic case.
Furtherly, the annular of the non-contact seals pair between 4 mating surface of the big envelope 2 and transparent cover is constituted in the present invention
Slot, platform cross section be in mutually matched cone tank, platform structure, and be machined with several phase interworkings along the surface of annular groove, platform
The annular groove of conjunction forms several sections of noncontact seams.The inner hole of the big envelope 2 by way of screw thread or interference fit with overhanging rotation
Axis 1 is linked.
It is located at the annular groove of the non-contact seals pair between 4 inner hole of transparent cover in overhanging rotary shaft in the present invention, in platform
Annular groove bottom be in conical protrusions, and be located at 4 outer ring of transparent cover annular groove cell wall lower part be machined with connection annular oil
The oil return hole of slot.
When work, overhanging rotary shaft 1 is rotated together with big envelope 2, and transparent cover 4 is static, the mating surface of the big envelope 2 and transparent cover 4
Between be made of annular groove, platform secondary mutually nested non-contact seals and transparent cover 4 and big envelope 2 mating surface side edge
The annular oil blocking edge and the annular oil groove oil droplet that sputters bearing for locating setting block and pass through the oil return notch of 4 lower part of transparent cover with
Cabinet oil return hole drains back box house.In addition, being made of between big envelope 2 and the mating surface of transparent cover 4 annular groove, platform non-contact
Sealing pair and transparent cover 4 and annular oil blocking edge that the edge of the mating surface side of big envelope 2 is arranged pass through the corresponding annular groove of three
(annular groove shape can be diversified) and gap cooperation seal remaining oil gas, positioned at the cell wall lower part of the outer ring annular groove of transparent cover 4
Oil return hole then the trapped fuel accumulated in gap is led back in case.
Claims (4)
1. a kind of overhanging rotary shaft non-contact seal structure, it includes being mounted on transmission by bearing, round nut, big envelope, transparent cover
Overhanging rotary shaft in case, it is characterised in that: by using the mode of clearance fit between the big envelope and the mating surface of transparent cover
At least one of annular groove, the platform processed constitutes mutually nested non-contact seals pair；The transparent cover inner hole and overhanging rotary shaft
Between the annular groove that processes by using the mode of clearance fit, platform structure constitute non-contact seals pair；The transparent cover and envelope
The edge of the mating surface side of set is provided with annular oil blocking edge and annular oil groove, and the annular oil groove is arranged by transparent cover lower part
Oil return notch be connected to the drainback passage in transmission case.
2. overhanging rotary shaft non-contact seal structure according to claim 1, it is characterised in that: constitute the big envelope and thoroughly
The longitudinal section of the annular groove, platform of mutually nested non-contact seals pair is in mutually matched cone tank, platform knot between lid mating surface
Structure, and have several mutually matched annular grooves along the cone face process of annular groove, platform, form several sections of noncontact seams.
3. overhanging rotary shaft non-contact seal structure according to claim 1, it is characterised in that: the inner hole of the big envelope is logical
The mode for crossing screw thread or interference fit is linked with overhanging rotary shaft.
4. overhanging rotary shaft non-contact seal structure according to claim 1, it is characterised in that: be located in overhanging rotary shaft
The annular groove of the non-contact seals pair between transparent cover inner hole, the bottom of annular groove in platform is in conical protrusions, and is located at
The cell wall lower part of the annular groove of transparent cover outer ring is machined with the oil return hole of connection annular oil groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910822288.3A CN110425225A (en) | 2019-09-02 | 2019-09-02 | A kind of overhanging rotary shaft non-contact seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910822288.3A CN110425225A (en) | 2019-09-02 | 2019-09-02 | A kind of overhanging rotary shaft non-contact seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110425225A true CN110425225A (en) | 2019-11-08 |
Family
ID=68416937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910822288.3A Pending CN110425225A (en) | 2019-09-02 | 2019-09-02 | A kind of overhanging rotary shaft non-contact seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110425225A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9203841D0 (en) * | 1992-12-21 | 1992-12-21 | Svenska Rotor Maskiner Ab | ROTARY SCREW COMPRESSOR WITH SHAFT SEAL |
| CN204396190U (en) * | 2014-12-25 | 2015-06-17 | 重庆江北机械有限责任公司 | A kind of horizontal type scraper centrifuger rear bearing sealing device |
| CN205173043U (en) * | 2015-12-09 | 2016-04-20 | 新昌县亿源精密机械有限公司 | Centrifugal fan bearing end plate subassembly structure |
| CN211175040U (en) * | 2019-09-02 | 2020-08-04 | 郑州机械研究所有限公司 | Overhanging rotating shaft non-contact sealing structure |
-
2019
- 2019-09-02 CN CN201910822288.3A patent/CN110425225A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9203841D0 (en) * | 1992-12-21 | 1992-12-21 | Svenska Rotor Maskiner Ab | ROTARY SCREW COMPRESSOR WITH SHAFT SEAL |
| CN204396190U (en) * | 2014-12-25 | 2015-06-17 | 重庆江北机械有限责任公司 | A kind of horizontal type scraper centrifuger rear bearing sealing device |
| CN205173043U (en) * | 2015-12-09 | 2016-04-20 | 新昌县亿源精密机械有限公司 | Centrifugal fan bearing end plate subassembly structure |
| CN211175040U (en) * | 2019-09-02 | 2020-08-04 | 郑州机械研究所有限公司 | Overhanging rotating shaft non-contact sealing structure |
Non-Patent Citations (1)
| Title |
|---|
| 姜圣阶: "《合成氨工学》", 28 February 1966, 化学工业出版社, pages: 333 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240702 Address after: 450001 No.149, science Avenue, high tech Zone, Zhengzhou City, Henan Province Applicant after: Zheng Ji Suo (Zhengzhou) Transmission Technology Co.,Ltd. Country or region after: China Address before: No. 149, Kexue Avenue, high tech Development Zone, Zhengzhou, Henan Province, 450001 Applicant before: ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING Co.,Ltd. Country or region before: China |
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| TA01 | Transfer of patent application right |