CN212004252U - Sealing ring for stern shaft sealing - Google Patents
Sealing ring for stern shaft sealing Download PDFInfo
- Publication number
- CN212004252U CN212004252U CN202020361060.7U CN202020361060U CN212004252U CN 212004252 U CN212004252 U CN 212004252U CN 202020361060 U CN202020361060 U CN 202020361060U CN 212004252 U CN212004252 U CN 212004252U
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- sealing ring
- ring
- sealing
- stern shaft
- semi
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Abstract
The utility model relates to a stern shaft is sealed and is used sealing ring, it has solved traditional stern shaft sealing ring life weak point, the technical problem who leaks appears easily, and it is equipped with the sealing ring body, and the sealing ring body is the subdivision formula structure, and the sealing ring body subdivision is the sealing ring semi-ring, and the sealing ring semi-ring is equipped with the through-hole, the built-in screw thread fastener that is equipped with of through-hole, and the sealing ring semi-ring passes through screw thread fastener and connects, and the sealing ring body is equipped with the carbide piece, and the carbide piece is fixed on the. The utility model discloses can extensively be used for ocean boats and ships, inland river boats and ships and ocean engineering machinery etc..
Description
Technical Field
The utility model relates to a sealing device field especially relates to a stern shaft is sealed and is used sealing ring.
Background
At present, a water-lubricated stern shaft sealing device for a ship generally comprises a sealing shell, an elastic compensation body, a sealing ring, a sealing movable ring, a sealing static ring, a movable ring fixing slip and the like. As the stern shaft sealing device is continuously developed and advanced for over a century, the structure of the existing device is basically fixed, and the technology is relatively mature. However, for the problem of material selection of the moving and static rings of the water lubrication sealing device, composite materials such as laminated bakelite plates and polymer materials are used at present, but the materials are deficient in solving the problem of wear resistance of the sealing ring, and particularly in water with large sand content, the wear of the sealing ring is obvious. While small seals use integral carbide rings, larger seals, such as those having a shaft diameter in excess of 200mm, present a safety risk if a single carbide ring is used, since the carbide is hard and brittle and is subject to chipping during use.
Disclosure of Invention
The utility model discloses a solve present large-scale sealing ring hard and brittle, easy fracture, the not enough technical problem of wearability provides a wearability good, the difficult cracked stern axle of being difficult for simultaneously seals with sealing ring.
The utility model provides a stern shaft is sealing with sealing ring, it is equipped with the sealing ring body, and the sealing ring body is for splitting formula structure, and the sealing ring body splits into the sealing ring semi-ring, and the sealing ring semi-ring is equipped with the through-hole, the built-in threaded fastener that is equipped with of through-hole, and the sealing ring semi-ring passes through threaded fastener and connects, and the sealing ring body is equipped with the carbide piece, and the carbide piece is fixed on the sealing ring body through the mode of brazing.
Preferably, the half-ring is provided with a positioning hole on the half surface, the half ring half-ring is positioned by a positioning pin, and the positioning pin is provided with an anti-loosening pin.
Preferably, the brazing solder is red copper or brass, and the thickness of the hard alloy sheet is 1mm-5 mm.
Preferably, the number of the hard alloy pieces is not less than 4.
Preferably, the hard alloy sheet is subjected to grinding processing by a diamond grinding wheel after brazing.
Preferably, the joint positions of adjacent hard alloy sheets are processed by arc, and the joint positions are fully filled with brazing filler metal.
The utility model discloses beneficial effect:
the utility model has the structural characteristics of split type, can be used as a static ring and a movable ring, and can maintain the movable ring and the static ring without shaft drawing; positioning pins are arranged on the half surfaces of the two half rings, so that accurate positioning of the half rings during repeated installation is guaranteed; the base material is made of copper alloy or stainless steel or copper alloy with good toughness and corrosion resistance, so that the defects of fragile pure hard alloy ring and poor impact resistance are avoided; the utility model discloses be fixed with carbide's sealing ring at substrate sealing surface, surface abrasion resistance is very excellent, and carbide and substrate adopt to braze or the glue bonding is connected, can satisfy stern axle stern shaft sealing device and boats and ships with the life-span through selecting suitable compression volume, and the sealing ring life who adopts carbide can reach more than 10 ten thousand hours, and the biggest linear velocity of permission can reach 6 ms. The service life is long, and the maintenance can be carried out during the overhaul of the ship.
Drawings
Fig. 1 is an exploded view of the present invention;
fig. 2 is an assembly view of the present invention.
Description of the symbols of the drawings:
1. a seal ring body; 2. a hard alloy sheet; 3. a brazing layer; 4. positioning pins; 5. a fastener; and 6, an anti-loosening pin.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, so that those skilled in the art can easily implement the present invention.
Example 1: as shown in fig. 1-2, the present embodiment is provided with a seal ring body 1, several pieces of cemented carbide pieces 2, a brazing layer 3, a positioning pin 4, and a fastener 5.
In the implementation process, the sealing ring body 1 is integrally processed firstly, and the aging treatment is well carried out, so that the conditions that secondary deformation occurs in the subsequent processing or using process, even cracks of the hard alloy sheet 2 occur due to deformation and the like are avoided. The material of the sealing ring body 1 is generally stainless steel or copper alloy.
The body is brazed with the hard alloy sheets 2, the thickness of the hard alloy sheets 2 is 1mm-5mm, the minimum number of the hard alloy sheets 2 is not less than 4, and the maximum number is determined according to actual needs or process capability. The welding flux is red copper or brass, the brazing process is suggested to be carried out in a vacuum brazing furnace, air holes or other defects are avoided, and the water leakage condition in the use process of the stern shaft sealing device is avoided. The material of the hard alloy sheet 2 is generally YG6 or YG 8.
And grinding the brazed sealing ring on the surface brazed with the hard alloy sheet 2 to ensure that the sealing surface has better flatness.
Cutting the whole circular ring into two semi-rings in an electric spark machining mode, grinding the cut section of the semi-rings, machining positioning pin grooves on the section, drilling positioning pin holes, and machining bolt holes.
The two half rings are connected together using a locating pin 4 and a fastener 5, the fastener 5 is typically a bolt and a nut, the tightening torque of the fastener 5 is set, and the installation is performed in the subsequent disassembly and assembly process according to the set tightening torque.
And processing the inner diameter of the sealing ring assembly assembled by the fastening piece 5, grinding the sealing end face where the hard alloy sheet 2 is positioned again, grinding the surface of the sealing ring on a grinding flat plate by using silicon carbide grinding powder after grinding, and finally coloring to check the flatness and the sealing property of the sealing ring surface, wherein the coloring area is not less than 80 percent, and the coloring sealing ring is continuous.
In use, the two sealing ring halves should be used in pairs and not exchanged.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, as various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the scope defined by the claims of the present invention shall be within the protection scope of the present invention.
Claims (6)
1. The sealing ring for the stern shaft sealing is provided with a sealing ring body, the sealing ring body is of a split structure, the sealing ring body is split into sealing ring semi-rings, the sealing ring semi-rings are provided with through holes, threaded fasteners are arranged in the through holes, and the sealing ring semi-rings are connected through the threaded fasteners.
2. The seal ring for stern shaft seal according to claim 1 wherein the seal ring half ring has locating holes on its haver surface, the seal ring half ring is located by locating pins, and the locating pins are provided with anti-loosening pins.
3. The seal ring for a stern shaft seal according to claim 1, wherein the brazing filler metal is copper or brass, and the thickness of the hard alloy piece is 1mm to 5 mm.
4. The seal ring for stern shaft seal according to claim 3 wherein the number of the cemented carbide pieces is not less than 4.
5. The seal ring for stern shaft seal according to claim 4 wherein the cemented carbide pieces are ground with a diamond grinding wheel after brazing.
6. The seal ring for stern shaft seal according to claim 5 wherein the joint between adjacent pieces of cemented carbide is rounded and the joint is substantially filled with brazing filler metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020361060.7U CN212004252U (en) | 2020-03-20 | 2020-03-20 | Sealing ring for stern shaft sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020361060.7U CN212004252U (en) | 2020-03-20 | 2020-03-20 | Sealing ring for stern shaft sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212004252U true CN212004252U (en) | 2020-11-24 |
Family
ID=73430427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020361060.7U Active CN212004252U (en) | 2020-03-20 | 2020-03-20 | Sealing ring for stern shaft sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212004252U (en) |
-
2020
- 2020-03-20 CN CN202020361060.7U patent/CN212004252U/en active Active
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