CN2132880Y - Rear shaft sealing device - Google Patents
Rear shaft sealing device Download PDFInfo
- Publication number
- CN2132880Y CN2132880Y CN 92230350 CN92230350U CN2132880Y CN 2132880 Y CN2132880 Y CN 2132880Y CN 92230350 CN92230350 CN 92230350 CN 92230350 U CN92230350 U CN 92230350U CN 2132880 Y CN2132880 Y CN 2132880Y
- Authority
- CN
- China
- Prior art keywords
- baffle ring
- oil sealing
- sealing base
- corrosion protection
- 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 - Fee Related
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- Sealing Devices (AREA)
Abstract
The utility model relates to a sealing device for a rear shaft. A baffle ring which is in the interference fit with an anticorrosive lining and a press cover which is in the interstice fit with the baffle ring are used to replace the structure of a rubber sealing element formerly used to prevent the foreign substance entering a seal cavity; besides, the structure adopted by the utility model is more effective in preventing the foreign substance. Threaded holes used for the installation are connected with a section of concave station used for containing the root of a screw by the sealing device for a rear shaft provided by the utility model to ensure that the sealing device for the rear shaft is not wound with the foreign substance, and the utility model can not be damaged.
Description
The utility model relates to the end shaft sealed set that is used for the marine rear shaft sealing of oil lubrication.
Used in the past, as " China and foreign countries boats and ships corollary equipment handbook (Chinese Maritime Press, in January, 1989 front page) record end shaft sealed set, mostly adopt rubber seal to enter Seal cage to prevent small foreign bodies such as twine, but this rubber seal is on-stream to be wear out failure easily, can not stop effectively that foreign matter enters Seal cage.In addition, the easy hook of screw afterbody that some exposes on the device twines foreign matter and causes damage.
At the defective in the above-mentioned prior art, the utility model is exactly will release a kind of foreign matter that can effectively stop to enter Seal cage and reduce the end shaft sealed set that foreign matter twines.
End shaft sealed set provided by the utility model has one and is installed in the outer corrosion protection lining of tailing axle, and the corrosion protection lining has an oil sealing base outward, and oil sealing base is installed on the hull.Between oil sealing base and corrosion protection lining, oil seal is installed, as outside framework oil seal spare etc.After oil sealing base, promptly lean on propulsion device (propeller cavitation) side at oil sealing base, a baffle ring is housed on the corrosion protection lining.Baffle ring is the swiveling body of a face according to corrosion protection lining axis, and it and corrosion protection lining are made interference fit, and a gland is arranged outside baffle ring, and gland is mounted on the oil sealing base, and gland and baffle ring are made Spielpassung.
End shaft sealed set provided by the utility model, an end of its oil sealing base is installed on the hull.One cylindric inner chamber is arranged on the oil sealing base, and it is installed on an end opening of hull, filling oil seal in this inner chamber and between the corrosion protection lining makes the sealing that constitutes between corrosion protection lining that rotates and the oil sealing base of fixing.The other end at oil sealing base, promptly point to an end and the corrosion protection lining of propulsion device (propeller cavitation) and make gland of Spielpassung installation, gland also has an inner chamber, and inner chamber is to be the solid of rotation shape that circle was linked to be in the center of circle with corrosion protection lining axis, and it is installed on an end opening of oil sealing base.In the gland inner chamber, there is one to make interference fit, makes the baffle ring of Spielpassung with gland with the corrosion protection lining.Two end faces of baffle ring respectively with gland in resonator end surface parallel with the oil sealing base ear end face, and the gap between them is below 0.5 millimeter, in order to reduce technology difficulty and effectively to stop foreign matter, this gap is preferably 0.4 millimeter.
End shaft sealed set provided by the utility model, the radial cross section of its baffle ring (4) is generally rectangular surfaces.Then gland (3) inner chamber also is the rectangle radial cross section.Be that the gland inner chamber is cylindric, baffle ring is the rectangular cross-section ring.
End shaft sealed set provided by the utility model, the external diameter of its gland is identical with the external diameter of oil sealing base (1), and on the gland in order to it is installed in the screw hole on the oil sealing base, promptly on the gland to the mounting hole of oil sealing base, be connected with the concave station that holds the screw afterbody.
Corrosion protection lining (5) is gone up in order to the corrosion protection lining is installed in the screw hole on the propulsion device (propeller cavitation) in addition, promptly on the corrosion protection lining to the mounting hole of propulsion device (propeller cavitation), be connected with the concave station that holds the screw afterbody.
End shaft sealed set provided by the utility model, the related corrosion protection lining of tailing axle rotates when work, and baffle ring also rotates thereupon, and gland is motionless according to oil sealing base.Micro gap between baffle ring and the gland forms water-stop during rotation, foreign matter is difficult to therefrom pass the Seal cage that arrives in the oil sealing base.
End shaft sealed set provided by the utility model, it adopts the baffle ring structure to stop that foreign matter enters Seal cage, because baffle ring and miscellaneous part do not have friction so that not fragile, the screw afterbody of hiding then can not twine foreign matter by hook.For this reason, end shaft sealed set provided by the utility model can stop effectively that foreign matter enters Seal cage and do not damage for foreign matter.
Fig. 1 partly cuts open figure for the utility model embodiment's.
Among the figure: the 1--oil sealing base; The 2--oil seal;
The 3--gland; The 4--baffle ring;
5--corrosion protection lining
Embodiment:
The propeller cavitation mounting hole back segment of corrosion protection lining (5) is enlarged, be enough to hold the afterbody of hexagon socket head cap screw.Put a gland (3) on the corrosion protection lining, it is cylindric that cavity is arranged in the gland, and gland and corrosion protection lining are Spielpassung.Axial installation screw hole is arranged on the gland, and this hole back segment also enlarges, and is enough to hold the afterbody of hexagon socket head cap screw.Throw a baffle ring (4) again on the corrosion protection lining into, baffle ring is the rectangular cross-section ring, and its external diameter is slightly smaller than the gland cavity diameter, and thickness is less than 0.8 millimeter of gland cavity depth.And then the oil sealing base (1) of packing into, oil sealing base and corrosion protection lining are Spielpassung, compress with cover plate behind the filling oil seal (2) in the Seal cage in the oil sealing base.So make end shaft sealed set.
Claims (5)
1, a kind of end shaft sealed set, has the corrosion protection lining, be enclosed within the outer oil sealing base of corrosion protection lining and be installed in oil sealing base and the corrosion protection lining between oil seal, feature of the present utility model is to make interference fit with the corrosion protection lining baffle ring is installed after oil sealing base, baffle ring has a gland with inner chamber similar to the baffle ring shape outward, and gland and baffle ring are installed on the oil sealing base as Spielpassung.
2, end shaft sealed set as claimed in claim 1 is characterized in that the gap between resonator end surface is preferably 0.4 millimeter for less than 0.5 millimeter in two end faces of baffle ring and oil sealing base ear end face and the gland.
3, end shaft sealed set as claimed in claim 1 or 2, the radially section that it is characterized in that baffle ring is a rectangle.
4, end shaft sealed set as claimed in claim 1 is characterized in that the mounting hole to oil sealing base is connected with the concave station that holds the screw afterbody on the gland.
5, end shaft sealed set as claimed in claim 1 is characterized in that on the said corrosion protection lining angle of rake mounting hole being connected with the concave station that holds the screw afterbody.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92230350 CN2132880Y (en) | 1992-08-10 | 1992-08-10 | Rear shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92230350 CN2132880Y (en) | 1992-08-10 | 1992-08-10 | Rear shaft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2132880Y true CN2132880Y (en) | 1993-05-12 |
Family
ID=33773490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92230350 Expired - Fee Related CN2132880Y (en) | 1992-08-10 | 1992-08-10 | Rear shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2132880Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064438C (en) * | 1996-01-08 | 2001-04-11 | 肥城市磷铵厂 | Novel sealing structure of roots blower |
| CN103123002A (en) * | 2011-11-21 | 2013-05-29 | 太阳鸟游艇股份有限公司 | Screw shaft water lubrication sealing device |
-
1992
- 1992-08-10 CN CN 92230350 patent/CN2132880Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064438C (en) * | 1996-01-08 | 2001-04-11 | 肥城市磷铵厂 | Novel sealing structure of roots blower |
| CN103123002A (en) * | 2011-11-21 | 2013-05-29 | 太阳鸟游艇股份有限公司 | Screw shaft water lubrication sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |