CN217328449U

CN217328449U - Shaft seal structure of turbocharger

Info

Publication number: CN217328449U
Application number: CN202220413356.8U
Authority: CN
Inventors: 贺兴龙; 陈芳; 王涛; 王贵州; 王慧萍
Original assignee: Wuxi Kelide Precision Machinery Co ltd
Current assignee: Wuxi Kelide Precision Machinery Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-08-30
Anticipated expiration: 2032-02-28

Abstract

The utility model belongs to the technical field of turbocharger, and discloses a shaft seal structure of turbocharger, which comprises a supercharger shell, wherein a turbine shaft is arranged in the supercharger shell, an oil seal pipe is arranged on the turbine shaft, four baffle rings are arranged in the oil seal pipe, a threaded hole is arranged on the outer wall of the oil seal pipe, a fastening bolt is arranged in the threaded hole, a groove is arranged on the outer wall of the turbine shaft, a first check ring is arranged at one end of the oil seal pipe, a plug cylinder is arranged at one end of the first check ring, a plurality of corrugated strips are arranged on the outer wall of the plug cylinder, and corrugated grooves are arranged on the side wall of the corrugated strips. Oil is not easy to enter a gap between the shaft seal ring and the supercharger shell.

Description

Shaft seal structure of turbocharger

Technical Field

The utility model belongs to the technical field of turbo charger, concretely relates to turbo charger's bearing seal structure.

Background

The turbocharger is an air compressor, the air input is increased by compressing air, the turbocharger pushes a turbine in a turbine chamber by utilizing the inertia impulsive force of waste gas exhausted by an engine, the turbine drives a coaxial impeller, the impeller pumps the air sent by a pipeline of an air filter to enable the air to be pressurized and enter an air cylinder, and a shaft seal is arranged on a shaft connecting the turbine and the impeller, so that oil cannot leak.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a turbo charger's bearing seal structure to the installation operation is complicated when solving the shaft seal circle that provides in the above-mentioned background art and turbine shaft assembly, and the gap between bearing seal circle and the booster casing easily gets into the problem of fluid.

In order to achieve the above object, the utility model provides a following technical scheme: the shaft seal structure of the turbocharger comprises a supercharger shell, wherein a turbine shaft is arranged inside the supercharger shell, an oil seal pipe is arranged on the turbine shaft, four baffle rings are arranged inside the oil seal pipe, a threaded hole is formed in the outer wall of the oil seal pipe, a fastening bolt is arranged in the threaded hole, and a groove is formed in the outer wall of the turbine shaft.

Preferably, a first check ring is installed at one end of the oil seal pipe, a plug cylinder is installed at one end of the first check ring, a plurality of corrugated strips are installed on the outer wall of the plug cylinder, and corrugated grooves are formed in the side wall of each corrugated strip.

Preferably, a second retaining ring and a fourth retaining ring are installed on the outer wall of the oil seal pipe, the second retaining ring and the fourth retaining ring are symmetrically arranged, and a third retaining ring is installed at one end, close to the fourth retaining ring, of the oil seal pipe.

Preferably, four baffle rings are of circular arc structures, a circular ring is formed after the end parts of the four baffle rings are attached, and the circular ring is in transition fit with the groove.

Preferably, both ends of the oil seal pipe are provided with external threads, and the inner walls of the first retaining ring and the third retaining ring are provided with internal threads.

Preferably, the second retaining ring and the fourth retaining ring have the same thickness, and the second retaining ring and the fourth retaining ring have the same diameter.

Compared with the prior art, the utility model, following beneficial effect has:

(1) the utility model discloses in, through the oil blanket pipe that sets up, set up flutedly on the turbine shaft, the oil blanket pipe can directly overlap in the turbine shaft outside, then is located the inside ring that keeps off of oil blanket through fastening bolt locking, keeps off in the ring card goes into the recess of turbine shaft to realize installing the oil blanket pipe fast, improve the installation effectiveness, in the installation, need not heat lubricating oil, guaranteed can not have lubricating oil between oil blanket pipe and the turbine shaft, stability is higher.

(2) The utility model discloses in, through at the first retaining ring of oil seal pipe tip installation, at the tip installation stopper section of thick bamboo of first retaining ring, stopper section of thick bamboo outside is ripple strip structure, and ripple strip and the laminating of booster shells inner wall block fluid through the ripple strip, and the difficult fluid that gets into in gap between shaft seal circle and the booster casing has improved the sealing performance of bearing seal structure.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a state diagram of the present invention with the supercharger housing and turbine shaft removed;

FIG. 3 is a schematic structural view of the oil seal pipe of the present invention;

FIG. 4 is an external view of the oil seal pipe of the present invention;

FIG. 5 is an external view of a turbine shaft according to the present invention;

FIG. 6 is an enlarged view of portion A of FIG. 1;

in the figure: 1. a plug cylinder; 2. a first retainer ring; 3. a second retainer ring; 4. a third retainer ring; 5. a supercharger housing; 6. fastening a bolt; 7. a fourth retainer ring; 8. a turbine shaft; 9. oil seal pipe; 10. a corrugated strip; 11. a baffle ring; 12. a threaded hole; 13. an external thread; 14. a groove; 15. a corrugated groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides the following technical solutions: the utility model provides a turbo charger's bearing seal structure, including supercharger housing 5, supercharger housing 5's internally mounted has turbine shaft 8, install oil seal pipe 9 on the turbine shaft 8, and oil seal pipe 9's internally mounted has four to keep off ring 11, oil seal pipe 9's outer wall set up threaded hole 12, install fastening bolt 6 in the threaded hole 12, turbine shaft 8's outer wall is seted up flutedly 14, insert turbine shaft 8 oil seal pipe 9, through four fastening bolt 6 of screwing, fastening bolt 6 promote to keep off ring 11, keep off ring 11 and get into in the recess 14, and chucking turbine shaft 8, turbine shaft 8 drives oil seal pipe 9 when rotating and rotates, supercharger housing 5 inner wall is seted up with oil seal pipe 9 matched with cell body, oil seal pipe 9 is located the cell body internal rotation, can place fluid simultaneously and flow in supercharger housing 5 is inside.

Further, first retaining ring 2 is installed to the one end of oil seal pipe 9, and a stopper section of thick bamboo 1 is installed to the one end of first retaining ring 2, and a plurality of ripple strips 10 are installed to the outer wall of a stopper section of thick bamboo 1, and ripple groove 15 has been seted up to the lateral wall of ripple strip 10, and the outer wall of ripple strip 10 and supercharger housing 5's inner wall contact, when a stopper section of thick bamboo 1 rotates, ripple strip 10 rotates, and ripple strip 10 shelters from fluid, avoids fluid to get into the cell body of supercharger housing 5 inner wall.

Further, second retaining ring 3 and fourth retaining ring 7 are installed to the outer wall of oil seal pipe 9, second retaining ring 3 and fourth retaining ring 7 are the symmetry and set up, third retaining ring 4 is installed to the one end that is close to fourth retaining ring 7 on the oil seal pipe 9, the cell body with second retaining ring 3 and fourth retaining ring 7 matched with is seted up to the inner wall of booster casing 5, when oil seal pipe 9 rotated, second retaining ring 3 and fourth retaining ring 7 rotated in the cell body, second retaining ring 3 and fourth retaining ring 7 can improve the leakproofness of bearing seal structure.

Further, four baffle rings 11 are circular arc structures, and a circular ring is formed after the end parts of the four baffle rings 11 are attached, and the circular ring is in transition fit with the groove 14.

Further, the both ends of oil seal pipe 9 all are provided with external screw thread 13, and the inner wall of first retaining ring 2 and third retaining ring 4 all is provided with the internal thread, and first retaining ring 2 and third retaining ring 4 all close with the both ends of oil seal pipe 9 through the screw thread soon and are connected.

Further, the thickness of the second retainer ring 3 is the same as that of the fourth retainer ring 7, and the diameter of the second retainer ring 3 is the same as that of the fourth retainer ring 7.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a shaft seal structure of turbo charger, includes booster casing (5), the internally mounted of booster casing (5) has turbine shaft (8), its characterized in that: the turbine shaft (8) is provided with an oil seal pipe (9), four baffle rings (11) are arranged inside the oil seal pipe (9), the outer wall of the oil seal pipe (9) is provided with a threaded hole (12), a fastening bolt (6) is arranged in the threaded hole (12), and the outer wall of the turbine shaft (8) is provided with a groove (14).

2. The shaft seal structure of a turbocharger according to claim 1, wherein: first retaining ring (2) are installed to the one end of oil blanket pipe (9), a stopper section of thick bamboo (1) is installed to the one end of first retaining ring (2), and the outer wall of a stopper section of thick bamboo (1) installs a plurality of ripple strips (10), ripple groove (15) have been seted up to the lateral wall of ripple strip (10).

3. The shaft seal structure of a turbocharger according to claim 2, wherein: the oil seal structure is characterized in that a second retaining ring (3) and a fourth retaining ring (7) are installed on the outer wall of the oil seal pipe (9), the second retaining ring (3) and the fourth retaining ring (7) are symmetrically arranged, and a third retaining ring (4) is installed at one end, close to the fourth retaining ring (7), of the oil seal pipe (9).

4. The shaft seal structure of a turbocharger according to claim 3, wherein: four keep off ring (11) and be circular arc structure, and form a ring after the tip laminating of four fender rings (11), ring and recess (14) transition fit.

5. The shaft seal structure of a turbocharger according to claim 4, wherein: the oil seal structure is characterized in that external threads (13) are arranged at two ends of the oil seal pipe (9), and internal threads are arranged on the inner walls of the first retainer ring (2) and the third retainer ring (4).

6. The shaft seal structure of a turbocharger according to claim 5, wherein: the thickness of the second retainer ring (3) is the same as that of the fourth retainer ring (7), and the diameter of the second retainer ring (3) is the same as that of the fourth retainer ring (7).