CN203614747U - Non-contact sealing device of rotary machine - Google Patents
Non-contact sealing device of rotary machine Download PDFInfo
- Publication number
- CN203614747U CN203614747U CN201320686341.XU CN201320686341U CN203614747U CN 203614747 U CN203614747 U CN 203614747U CN 201320686341 U CN201320686341 U CN 201320686341U CN 203614747 U CN203614747 U CN 203614747U
- Authority
- CN
- China
- Prior art keywords
- sealing
- tooth
- axle head
- lasso
- head gland
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 71
- 210000004907 gland Anatomy 0.000 claims abstract description 31
- 239000000428 dust Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 239000004519 grease Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
Images
Abstract
The utility model discloses a non-contact sealing device of a rotary machine. The non-contact sealing device comprises a rotating shaft and a shaft end gland provided with a circular hole, wherein the rotating shaft passes through the circular hole of the shaft end gland; a sealing structure is arranged between the rotating shaft and the shaft end gland; the sealing structure comprises a sleeve ring which is fixedly connected with the rotating shaft; the sleeve ring is provided with sealing teeth with circular convex ring shapes; the top of each sealing tooth is set into a sharp angle; an inner cavity is formed by the inner sides of the sealing teeth as well as the corresponding sides of the sleeve ring and the shaft end gland; an outer cavity is formed by the outer sides of the sealing teeth as well as the corresponding sides of the sleeve ring and the shaft end gland; the inner cavity is longer than the outer cavity. The non-contact sealing device of the rotary machine is reliable in sealing property, simple in structure and easy to process, and is suitable for rotating devices which are used for rotating the rotating shaft or a shell and have different rotating shaft diameters and rotating speeds; furthermore, the non-contact sealing device has the performances of water resistance, dust prevention and low resistance maintenance.
Description
Technical field
The utility model relates to a kind of sealing configuration of slewing gear, relates in particular to a kind of rotating machinery contactless sealing unit.
Background technique
For a long time, the contactless sealing structural type of rotating machinery, is substantially all to adopt labyrinth seal structure.The degree of depth that boss ring in labyrinth sealing is embedded is mutually large as far as possible, do in gap between boss ring the number of plies as far as possible little, boss ring is many as far as possible, fill in labyrinth sealed gap and expire lubricating grease, also be merely able to delay trickle or dust enters the labyrinth sealed time, in severe befouling environment, can not meet the seal request in rotating machinery lifetime, not expected earlier period damage has a strong impact on the running rate of equipment.In addition, labyrinth sealing complex manufacturing, cost are high, and the lubricating grease of filling in seal clearance has also increased considerably rotational resistance.Therefore, market, in the urgent need to a kind of contactless sealing structure of good sealing effect, reaches the effect that significantly prevents trickle or dust pollution rotating machinery, guarantees the normal service life of rotating machinery.
Model utility content
The utility model is in order to solve the problems of the prior art, a kind of rotating machinery contactless sealing unit is provided, can be applicable to the slewing gear that running shaft rotates or housing rotates of different rotary shaft diameter and rotating speed, and possess anti-trickle, prevent dust and keep the performance of lower resistance.
For solving the problems of the technologies described above, the utility model adopts following technological scheme: a kind of rotating machinery contactless sealing unit, comprise running shaft, with the axle head gland of circular hole, running shaft is through the circular hole of axle head gland, between running shaft and axle head gland, be provided with sealing configuration, sealing configuration comprises lasso, lasso is fixedly connected on running shaft, on lasso, be provided with the annular sealing tooth of boss, the tooth top of sealing tooth is set to wedge angle, inner side surface and the lasso of sealing tooth, between the corresponding surface of axle head gland, form inner chamber, outer side surface and the lasso of sealing tooth, between the corresponding surface of axle head gland, form exocoel, and interior cavity length is greater than external cavity length, the thickness of sealing tooth is greater than 0.1 millimeter, gap between tooth top and the axle head gland corresponding surface of sealing tooth is greater than 0.03 millimeter, and the width of inner chamber is 2-1000 millimeter, and the length of inner chamber is 2-1000 millimeter, the width of exocoel is 2-1000 millimeters, and the length of exocoel is greater than 0.1 millimeter.
A seal ring of interference assembling in the circular hole of described axle head gland.
Described sealing tooth is straight-tooth.
Described sealing tooth is helical teeth, and the top rake of helical teeth is 35 °～90 °.
The quantity of described sealing tooth is more than 1.
The beneficial effects of the utility model: seal the very little gap of formation between the circular hole wall on tooth and axle head gland in the utility model, its sealing tooth is wedge angle, can form good restriction effect; Between the corresponding surface of the inner side surface of sealing tooth and lasso, axle head gland, form inner chamber, between the corresponding surface of the outer side surface of sealing tooth and lasso, axle head gland, form exocoel, and interior cavity length is greater than external cavity length, can play significant kinetic energy dissipation effect, reach the sealing effect of significant prevention trickle or dust pollution rotating machinery with this.The utility model can be optimized design to physical dimension according to the raising of the increase of running shaft diameter or rotating speed
,be applicable to the sealing configuration of the slewing gear of different rotary shaft diameter, rotating speed, not only anti-trickle or dustproof effect are remarkable, and keep lower resistance performance.Especially the tooth top that seals tooth is set to wedge angle, both can guarantee that the intensity that seals tooth in contactless sealing structure can meet machining requirement, can realize again the as far as possible little object of sealing transverse tooth thickness degree, solve the difficult problem that contactless sealing structure difficulty of processing greatly, even cannot be processed.The utility model novel structure, only by sealing tooth, seal chamber is divided into exocoel and the inner chamber that ante-chamber is little, back cavity is large, its sealing tooth top portion is set to wedge angle, the sealability forming is significantly reliable, simple in structure and be easy to processing, the rotating machinery that has solved various running shaft diameters and rotating speed causes the difficult problem of earlier period damage because of trickle or dust pollution, significantly extend the working life of rotating machinery, improve system equipment running rate and overall economic efficiency, and very little on rotational resistance impact, energy-saving effect is remarkable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the enlarged view at A place in Fig. 1;
Fig. 3 is the structural representation of seal ring in the utility model;
Fig. 4 is A-A generalized section in Fig. 3;
Fig. 5 is the structural representation of lasso in the utility model;
Fig. 6 is A-A generalized section in Fig. 5;
Fig. 7 is the structural representation of the utility model axis side pressure lid;
Fig. 8 is A-A generalized section in Fig. 7;
Fig. 9 seals the structural representation that tooth is the lasso of helical teeth in the utility model;
Figure 10 is A-A generalized section in Figure 11.
Embodiment
Embodiment one: as shown in Figures 1 to 8, the utility model comprises running shaft 5, with the axle head gland 1 of circular hole 10, running shaft 5 is through the circular hole 10 of axle head gland 1, on running shaft 5, be fixedly installed wear-resistant sleeve 4, wear-resistant sleeve 4 is fastened as a whole with running shaft 5, wear-resistant sleeve 4 forms contact friction sealing with rubber seal ring 6, wear-resistant sleeve 4 has good wear-resisting effect, between running shaft 5 and axle head gland 1, be provided with sealing configuration, sealing configuration comprises lasso 3, on lasso 3, be provided with the annular sealing tooth 9 of boss, sealing tooth 9 is straight-tooth, the tooth top of sealing tooth 9 is set to wedge angle, lasso 3 is fixedly connected on running shaft 5, between axle head gland 1 and running shaft 5, be provided with rubber seal ring 6, a seal ring 2 of the interior interference assembling of circular hole 10 of axle head gland 1, seal ring 2 is arranged between lasso 3 and rubber seal ring 7, the effect of seal ring 2 is protection rubber seal rings 6, inner side surface and the lasso 3 of sealing tooth 9, between the corresponding surface of axle head gland 1, form inner chamber 7, outer side surface (it is outside that pollutant carrys out flow path direction) and the lasso 3 of sealing tooth 9, between the corresponding surface of axle head gland 1, form exocoel 8.The thickness b of sealing tooth 9 is for being greater than 0.1 millimeter, gap c between tooth top and axle head gland 1 corresponding surface of sealing tooth 9 is greater than 0.03 millimeter, the length d of inner chamber 7 is 2-1000 millimeter, the width f of inner chamber 7 is 2-1000 millimeter, the length a of exocoel 8 is for being greater than 0.1 millimeter, the width of exocoel 8 is 2-1000 millimeter, and the length d of inner chamber 7 is greater than the length a of exocoel 8.
As shown in Figure 9 and Figure 10, sealing tooth 9 also can adopt helical teeth, and the top rake α of helical teeth is 35 °～90 °.
Embodiment two: this embodiment and embodiment's one difference is: if rotating machinery inside is not mobile lubricant oil, do not need to arrange near the rubber seal ring 6 of rotating machinery contactless sealing unit inner side, wear-resistant sleeve 4 on running shaft 5 does not need to arrange yet simultaneously, and lasso 3 is directly fastened on running shaft 5.Seal ring 2 does not need independent processing yet, makes the shape of seal ring 2 on axle head gland 1.
Above embodiment is the technological scheme of unrestricted the present embodiment in order to explanation only, although the utility model is had been described in detail with reference to above-described embodiment, those of ordinary skill in the art is to be understood that: still can modify or be equal to replacement the utility model, and not departing from any modification or partial replacement of spirit and scope of the present utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (5)
1. a rotating machinery contactless sealing unit, comprise running shaft, with the axle head gland of circular hole, running shaft is through the circular hole of axle head gland, between running shaft and axle head gland, be provided with sealing configuration, it is characterized in that: sealing configuration comprises lasso, lasso is fixedly connected on running shaft, on lasso, be provided with the annular sealing tooth of boss, the tooth top of sealing tooth is set to wedge angle, inner side surface and the lasso of sealing tooth, between the corresponding surface of axle head gland, form inner chamber, outer side surface and the lasso of sealing tooth, between the corresponding surface of axle head gland, form exocoel, and interior cavity length is greater than external cavity length, the thickness of sealing tooth is greater than 0.1 millimeter, gap between tooth top and the axle head gland corresponding surface of sealing tooth is greater than 0.03 millimeter, and the width of inner chamber is 2-1000 millimeter, and the length of inner chamber is 2-1000 millimeter, the width of exocoel is 2-1000 millimeters, and the length of exocoel is greater than 0.1 millimeter.
2. rotating machinery contactless sealing unit according to claim 1, is characterized in that: a seal ring of interference assembling in the circular hole of described axle head gland.
3. rotating machinery contactless sealing unit according to claim 1, is characterized in that: described sealing tooth is straight-tooth.
4. rotating machinery contactless sealing unit according to claim 1, is characterized in that: described sealing tooth is helical teeth, and the top rake of helical teeth is 35 °～90 °.
5. according to the rotating machinery contactless sealing unit described in claim 1 or 3 or 4, it is characterized in that: the quantity of described sealing tooth is more than 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320686341.XU CN203614747U (en) | 2013-11-04 | 2013-11-04 | Non-contact sealing device of rotary machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320686341.XU CN203614747U (en) | 2013-11-04 | 2013-11-04 | Non-contact sealing device of rotary machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614747U true CN203614747U (en) | 2014-05-28 |
Family
ID=50767396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320686341.XU Expired - Lifetime CN203614747U (en) | 2013-11-04 | 2013-11-04 | Non-contact sealing device of rotary machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614747U (en) |
-
2013
- 2013-11-04 CN CN201320686341.XU patent/CN203614747U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101832393B (en) | Vertical shaft centrifugal seal system | |
| CN205226062U (en) | Interior external tooth is rotary motion's slewing bearing in opposite directions | |
| CN204153150U (en) | A kind of floating sealing device of rotating shaft | |
| CN201202816Y (en) | Mechanical sealing device of rotating shaft | |
| CN203614747U (en) | Non-contact sealing device of rotary machine | |
| CN201944276U (en) | Output shaft oil-leakage-prevention device for speed reduction box of oil sucking machine | |
| CN205155147U (en) | New -type rotary seal device | |
| CN203670771U (en) | Non-contact sealing device of rotating machine | |
| CN201448358U (en) | Special type slewing bearing | |
| CN201598663U (en) | Movable pulley mechanism on diaphragm grab bucket | |
| CN201277267Y (en) | Sealing check ring and deep groove ball bearing employing the same | |
| CN202561035U (en) | Shaft end sealing structure for bearing box body | |
| CN210715862U (en) | Reduction gearbox sealing device | |
| CN201678270U (en) | Lubrication sealing structure of novel high-speed low resistance roller | |
| CN204175933U (en) | A kind of novel combination type speed reducer running shaft preventing dust oil sealing device | |
| CN203348543U (en) | Large gear ring sealing device | |
| CN105333154A (en) | Fluid sealing structure for rotating shaft | |
| CN111654140A (en) | Double-labyrinth oil seal structure for mining motor | |
| CN202659899U (en) | Combined sealing structure for ends of rollers | |
| CN105090457A (en) | Sealing mechanism for reduction gearbox | |
| CN202301436U (en) | Inner oblique tooth type turntable bearing | |
| CN111692220A (en) | High-efficient lubricated gear coupling | |
| CN201651051U (en) | Composite rolling bearing | |
| CN207527041U (en) | A kind of sealed coalcutter internal spraying oil isolated from water rotary sealing system of multi-stage mechanical | |
| CN201636326U (en) | Centrifugal lossless sealing structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140528 |