CN216950562U

CN216950562U - Fixed sleeve shaft seal of turbocharger

Info

Publication number: CN216950562U
Application number: CN202220237434.3U
Authority: CN
Inventors: 陆建锋
Original assignee: Jiaxing Borui Turbo Technologies Co ltd
Current assignee: Jiaxing Borui Turbo Technologies Co ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-07-12
Anticipated expiration: 2032-01-28

Abstract

The utility model discloses a fixed sleeve shaft seal of a turbocharger, which comprises a shaft seal shell, wherein a first clamping groove is formed in the shaft seal shell, the bottom of the inner wall of the first clamping groove is fixedly connected with a wave spring, the top surface of the wave spring is fixedly connected with a supporting ring, the top surface of the supporting ring is rotatably connected with a rotating ring, the inner wall of the rotating ring is provided with a second clamping groove, the inner wall of the second clamping groove is fixedly connected with a first sealing ring, the top surface of the shaft seal shell is provided with a third clamping groove, the inner wall of the third clamping groove is lapped with a second sealing ring, the top surface of the second sealing ring is lapped with a pressing plate, the surface of the pressing plate is in threaded connection with a fastening bolt, and the fastening bolt is in threaded connection with the top surface of the shaft seal shell. In use, the effect of stably sealing the output rotating shaft of the turbocharger is realized, the sealing performance is effectively improved, the situation that oil leakage occurs at the sealing position of the pressure end is avoided, and the practicability is better.

Description

Fixed sleeve shaft seal of turbocharger

Technical Field

The utility model relates to the technical field of fixed sleeve shaft seals, in particular to a fixed sleeve shaft seal of a turbocharger.

Background

The turbocharger is actually an air compressor that increases the intake air amount by compressing air. The engine uses the inertia impulse force of the exhaust gas from the engine to push the turbine in the turbine chamber, the turbine drives the coaxial impeller, the impeller presses the air sent by the air filter pipeline, and the air is pressurized and enters the cylinder. When the rotating speed of the engine is increased, the exhaust gas exhaust speed and the rotating speed of the turbine are also increased synchronously, the impeller compresses more air to enter the air cylinder, the pressure and the density of the air are increased, more fuel can be combusted, and the output power of the engine can be increased by correspondingly increasing the fuel quantity and adjusting the rotating speed of the engine. The shaft seal fixed sleeve is one of the important components of the sealing structure of the pressure end of the turbocharger.

However, the fixed sleeve shaft seal of the existing turbocharger has poor sealing effect and is difficult to achieve better sealing effect, and the oil pressure at the sealing position of the pressure end is higher, so that the oil leakage phenomenon of the pressure end is easy to occur, and therefore, the problem is urgently needed to be solved.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a fixed sleeve shaft seal of a turbocharger, which solves the problems mentioned in the background technology.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a turbocharger fixed set bearing seal, includes the bearing seal casing, the inside first draw-in groove of having seted up of bearing seal casing, first draw-in groove inner wall bottom fixedly connected with wave spring, wave spring top surface fixedly connected with support ring, the support ring top surface rotates and is connected with the rotating ring, the second draw-in groove has been seted up to the rotating ring inner wall, the first sealing washer of second draw-in groove inner wall fixedly connected with, the third draw-in groove has been seted up to bearing seal casing top surface, third draw-in groove inner wall overlap joint has the second sealing washer, second sealing washer top surface overlap joint has the clamp plate, clamp plate surface threaded connection has fastening bolt, and fastening bolt and bearing seal casing top surface threaded connection.

Preferably, the number of the fastening bolts is three, and the three fastening bolts are distributed on the top surface of the pressure plate in an annular array.

Preferably, the first sealing ring and the second sealing ring are made of fluororubber materials.

Preferably, the rotating ring is of a circular ring structure, and the surface of the rotating ring is rotationally connected with the inner wall of the shaft seal shell.

Preferably, the top surface of the shaft seal shell and the surface of the pressure plate are both provided with threaded holes matched with the fastening bolts.

Preferably, the wave spring is in a compressed state.

Compared with the prior art, the utility model has the beneficial effects that: this turbocharger fixed sleeve bearing seal, inside turbocharger's output shaft passed the bearing seal casing, it hugs closely with turbocharger's output shaft through first sealing washer, seal, the output shaft rotation of turbocharger is followed to the rotating ring, wave spring extrusion support ring simultaneously, make the rotating ring steadily between support ring and retaining ring, rethread second sealing washer seals turbocharger's output shaft surface, through the clamp plate, fastening bolt fixes the second sealing washer, in use has realized being convenient for to carry out the stable sealed effect to turbocharger output pivot, sealing performance has effectively been promoted, the condition of the sealed department of pressure end emergence oil leak has been avoided, the practicality is better.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a front cross-sectional view of the structure of the present invention.

In the figure: the sealing device comprises a shaft seal shell 1, a first clamping groove 2, a wave spring 3, a support ring 4, a movable ring 5, a second clamping groove 6, a first sealing ring 7, a retaining ring 8, a third clamping groove 9, a second sealing ring 10, a pressing plate 11 and a fastening bolt 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1-2, a turbocharger fixed sleeve shaft seal comprises a shaft seal shell 1, a first clamping groove 2 is formed in the shaft seal shell 1, a wave spring 3 is fixedly connected to the bottom of the inner wall of the first clamping groove 2, the wave spring 3 is in a compressed state, so that under the elastic force action of the wave spring 3, a support ring 4 is pushed to limit the position of a moving ring 5, a support ring 4 is fixedly connected to the top surface of the wave spring 3, the top surface of the support ring 4 is rotatably connected with the moving ring 5, the moving ring 5 is in an annular structure, the surface of the moving ring 5 is rotatably connected with the inner wall of the shaft seal shell 1, a second clamping groove 6 is formed in the inner wall of the moving ring 5, a first seal ring 7 is fixedly connected to the inner wall of the second clamping groove 6, a third clamping groove 9 is formed in the top surface of the shaft seal shell 1, a second seal ring 10 is lapped on the inner wall of the third clamping groove 9, and the first seal ring 7 and the second seal ring 10 are both made of fluorine rubber, the fluororubber has high chemical stability, is the best one of all elastomers at present, and has excellent physical and mechanical properties, and can improve the sealing property, the top surface of the second sealing ring 10 is lapped with the pressing plate 11, the top surface of the shaft seal shell 1 and the surface of the pressing plate 11 are both provided with threaded holes matched with the fastening bolts 12, so as to be conveniently matched with the fastening bolts 12, the surface of the pressing plate 11 is in threaded connection with the fastening bolts 12, the fastening bolts 12 are in threaded connection with the top surface of the shaft seal shell 1, the number of the fastening bolts 12 is three, the three fastening bolts 12 are distributed on the top surface of the pressing plate 11 in an annular array, the limit of the second sealing ring 10 is more stable by arranging three groups of fastening bolts 12, the shaft seal of the turbocharger is fixedly sleeved, the output shaft of the turbocharger passes through the inside of the shell 1, and is tightly attached to the shaft seal of the turbocharger through the first sealing ring 7, seal, the output shaft that the rotating ring 5 followed turbo charger rotates, 3 extrusion support rings 4 of wave spring simultaneously, make the rotating ring 5 be in between support ring 4 and retaining ring 8 steadily, rethread second sealing washer 10 seals turbo charger's output shaft surface, through clamp plate 11, fastening bolt 12 fixes second sealing washer 10, in use has realized being convenient for to carry out the stable sealed effect to turbo charger output pivot, sealing performance has effectively been promoted, the condition of oil leak has been avoided pressing the end to take place to seal, the practicality is better.

When in use: this turbocharger fixed sleeve shaft seal, inside the shaft seal casing 1 was passed to turbocharger's output shaft, hug closely through first sealing washer 7 and turbocharger's output shaft, seal, rotating ring 5 rotated along turbocharger's output shaft, wave spring 3 extrusion support ring 4 simultaneously for rotating ring 5 is stably between support ring 4 and retaining ring 8, rethread second sealing washer 10 seals turbocharger's output shaft surface, through clamp plate 11, fastening bolt 12 fixes second sealing washer 10.

In conclusion, according to the turbocharger fixed sleeve shaft seal, the output shaft of the turbocharger penetrates through the inside of the shaft seal shell 1, the output shaft is tightly attached to the output shaft of the turbocharger through the first sealing ring 7 and is sealed, the movable ring 5 rotates along with the output shaft of the turbocharger, meanwhile, the supporting ring 4 is extruded by the wave spring 3, the movable ring 5 is stably located between the supporting ring 4 and the check ring 8, the surface of the output shaft of the turbocharger is sealed through the second sealing ring 10, the second sealing ring 10 is fixed through the pressing plate 11 and the fastening bolt 12, the effect of stably sealing the output rotating shaft of the turbocharger is achieved when the turbocharger fixed sleeve shaft seal is used, the sealing performance is effectively improved, the situation that oil leakage occurs at the sealing position of the pressure end is avoided, the practicability is good, and the problems existing in the prior art are solved.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A fixed sleeve shaft seal of a turbocharger comprises a shaft seal shell (1) and is characterized in that, a first clamping groove (2) is formed in the shaft seal shell (1), the bottom of the inner wall of the first clamping groove (2) is fixedly connected with a wave spring (3), the top surface of the wave spring (3) is fixedly connected with a supporting ring (4), the top surface of the supporting ring (4) is rotatably connected with a movable ring (5), a second clamping groove (6) is formed in the inner wall of the movable ring (5), a first sealing ring (7) is fixedly connected to the inner wall of the second clamping groove (6), a third clamping groove (9) is formed in the top surface of the shaft seal shell (1), a second sealing ring (10) is lapped on the inner wall of the third clamping groove (9), the top surface of the second sealing ring (10) is lapped with a pressure plate (11), the surface of the pressure plate (11) is in threaded connection with a fastening bolt (12), and the fastening bolt (12) is in threaded connection with the top surface of the shaft seal shell (1).

2. The turbocharger fixed sleeve shaft seal according to claim 1, characterized in that the number of the fastening bolts (12) is three, and the three fastening bolts (12) are distributed on the top surface of the pressure plate (11) in an annular array.

3. The turbocharger fixed sleeve shaft seal according to claim 1, wherein the first seal ring (7) and the second seal ring (10) are made of fluororubber.

4. The turbocharger fixed sleeve shaft seal according to claim 1, wherein the movable ring (5) is of an annular structure, and the surface of the movable ring (5) is rotatably connected with the inner wall of the shaft seal housing (1).

5. The turbocharger fixed sleeve shaft seal according to claim 1, wherein the top surface of the shaft seal housing (1) and the surface of the pressure plate (11) are both provided with threaded holes matched with the fastening bolts (12).

6. A turbocharger fixed gland seal according to claim 1 wherein said wave spring (3) is in compression.