Hydraulic rotary joint capable of reducing eccentric wear of sealing ring

Abstract

The utility model provides a hydraulic rotary joint capable of reducing eccentric wear of a sealing ring, which relates to the field of hydraulic rotary joints and comprises a mandrel, a round hole, a first channel, a second channel and an operating shell, and the top surface of the mandrel is provided with a round hole, a first channel, a second channel and an operating shell. Mounting holes are formed in the surface circumference of the top of the mandrel at equal intervals. When the device starts to be used, the operation of the device is more stable through the limitation of the movement of the limiting block on the inner wall of the limiting groove, the first sealing ring body is installed between the first fixing block and the first sealing groove, and the second sealing ring body is installed between the second fixing block and the second sealing groove; the first sealing ring body and the second sealing ring body are installed more stably, liquid is injected into the device through the first liquid inlet and the second liquid inlet and filtered through the first filtering membrane and the second filtering membrane, and the first filtering membrane and the second filtering membrane are both ceramic filtering membranes, so that the filtering effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic rotary joints, in particular to a hydraulic rotary joint for reducing the wear and deviation of a sealing ring. Background Art

[0002] A hydraulic rotary joint is a device used to connect rotating components and stationary components in a hydraulic system and can transmit hydraulic media in a rotating state. Hydraulic rotary joints are widely used in many fields, such as machine tools, metallurgical equipment, paper-making machinery, construction machinery, petrochemical industry, etc.

[0003] In the prior art, when the device is in use, the sealing ring will shift its position due to the running friction of the device, affecting the operation of the device. Moreover, when the liquid enters the interior of the device, the impurities in the liquid will affect the sealing ring inside the device. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hydraulic rotary joint for reducing the wear and deviation of a sealing ring to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A hydraulic rotary joint for reducing the wear and deviation of a sealing ring, comprising: a mandrel, on the surface of the top of the mandrel, a round hole is opened, a channel one is opened on the surface of the top of the mandrel, a channel two is opened on the surface of the top of the mandrel, a running shell is arranged on the surface of the mandrel, and mounting holes are equidistantly opened in a circumferential manner on the surface of the top of the mandrel.

[0006] As a preferred embodiment, a sealing groove one is opened on the surface of the mandrel, and the number of the sealing groove one is two. A sealing groove two is opened on the surface of the mandrel, and the number of the sealing groove two is two. Limiting grooves are equidistantly opened on the surface of the mandrel.

[0007] As a preferred embodiment, a bearing one is fixedly sleeved on the top surface of the mandrel, a bearing two is fixedly sleeved on the bottom surface of the mandrel, the surface of the bearing one is fixedly embedded in the inner wall of the running shell, and the surface of the bearing two is fixedly embedded in the inner wall of the running shell.

[0008] As a preferred embodiment, limiting blocks are fixedly installed equidistantly on the inner wall of the running shell, the surface of the limiting blocks moves in the inner wall of the limiting grooves, a fixing block one is fixedly installed on the inner wall of the running shell, and the number of the fixing block one is two. A sealing ring body one is installed in the inner wall of the fixing block one, and the surface of the sealing ring body one is installed in the inner wall of the sealing groove one. A fixing block two is fixedly installed on the inner wall of the running shell, and the number of the fixing block two is two. A sealing ring body two is installed in the inner wall of the fixing block two, and the surface of the sealing ring body two is installed in the inner wall of the sealing groove two.

[0009] As a preferred embodiment, a first liquid inlet is provided on the surface of the operating housing, a second liquid inlet is provided on the surface of the operating housing, a first filter membrane is fixedly installed on the inner wall of the first liquid inlet, and a first mounting block is fixedly installed on one side of the first liquid inlet.

[0010] As a preferred embodiment, a second filter membrane is fixedly installed on the inner wall of the second liquid inlet, and a second mounting block is fixedly installed on one side of the second liquid inlet.

[0011] As a preferred embodiment, a first sealing ring is installed on the inner wall of the top of the first channel, and a second sealing ring is installed on the inner wall of the top of the second channel.

[0012] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0013] 1. In the present utility model, when the device starts to be used, the surface of the limiting block is installed on the inner wall of the limiting groove, so that the operation of the device is more stable, reducing the influence of shaking on the sealing ring. The surface of the first sealing ring body is installed between the first fixing block and the first sealing groove, and the surface of the second sealing ring body is installed between the second fixing block and the second sealing groove, so that the first sealing ring body and the second sealing ring body are installed more stably, reducing the position deviation caused by friction of the device.

[0014] 2. In the present utility model, the liquid enters the device through the first liquid inlet and the second liquid inlet. The connecting pipe for injecting the liquid is better installed on the device through the first mounting block and the second mounting block. The impurities in the liquid are filtered by the first filter membrane and the second filter membrane. Since the materials of the first filter membrane and the second filter membrane are both ceramic filter membranes, which have a uniform microporous structure, high filtration accuracy, and strong chemical corrosion resistance, the impurities in the liquid can be filtered better, reducing the influence on the sealing ring after the impurities enter the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The side view of a hydraulic rotary joint for reducing the wear deviation of the sealing ring provided by the present utility model;

[0016] Figure 2 The left view of a hydraulic rotary joint for reducing the wear deviation of the sealing ring provided by the present utility model;

[0017] Figure 3 The core shaft cutting view of a hydraulic rotary joint for reducing the wear deviation of the sealing ring provided by the present utility model;

[0018] Figure 4 The operating housing cutting view of a hydraulic rotary joint for reducing the wear deviation of the sealing ring provided by the present utility model.

[0019] Legend Explanation:

[0020] 1. Mandrel; 101. Round hole; 2. Channel 1; 3. Channel 2; 4. Sealing groove 1; 5. Sealing groove 2; 6. Limiting groove; 7. Bearing 1; 8. Bearing 2; 9. Rotating housing; 10. Liquid inlet 1; 11. Liquid inlet 2; 12. Filter membrane 1; 13. Mounting block 1; 14. Filter membrane 2; 15. Mounting block 2; 16. Limiting block; 17. Fixed block 1; 18. Sealing ring body 1; 19. Fixed block 2; 20. Sealing ring body 2; 21. Sealing ring 1; 22. Sealing ring 2; 23. Mounting hole. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-4 , the present invention provides a technical solution: a hydraulic rotary joint for reducing the wear and deviation of the sealing ring, including: a mandrel 1, a round hole 101 is provided on the surface of the top of the mandrel 1, a channel 1 is provided on the surface of the top of the mandrel 1, a channel 2 is provided on the surface of the top of the mandrel 1, a rotating housing 9 is provided on the surface of the mandrel 1, and mounting holes 23 are equidistantly provided on the circumferential surface of the top of the mandrel 1.

[0023] Specifically: when the device starts to be used, it is installed inside the mounting hole 23 through screws, making the installation of the device more stable and the device more perfect.

[0024] In one embodiment, two sealing grooves 1 are provided on the surface of the mandrel 1, and the number of the sealing grooves 1 is two. Two sealing grooves 2 are provided on the surface of the mandrel 1, and the number of the sealing grooves 2 is two. Limiting grooves 6 are equidistantly provided on the surface of the mandrel 1.

[0025] Specifically: the sealing effect of the device is better through the sealing grooves 1 and 2 provided on the surface of the mandrel 1, the position is not easily deviated, and it is more perfect.

[0026] In one embodiment, a bearing 1 is fixedly sleeved on the top surface of the mandrel 1, a bearing 2 is fixedly sleeved on the bottom surface of the mandrel 1, the surface of the bearing 1 is fixedly embedded in the inner wall of the rotating housing 9, and the surface of the bearing 2 is fixedly embedded in the inner wall of the rotating housing 9.

[0027] Specifically: During the operation of the device, the rotating shell 9 sleeved on the surface of the mandrel 1 will move along with the movement through the first bearing 7 and the second bearing 8. The rotating shell 9 performs axial movement, making the operation of the entire device smoother and the device more stable and perfect.

[0028] In one embodiment, limiting blocks 16 are fixedly installed at equal distances on the inner wall of the rotating shell 9. The surface of the limiting blocks 16 moves on the inner wall of the limiting grooves 6. A first fixing block 17 is fixedly installed on the inner wall of the rotating shell 9, and the number of the first fixing blocks 17 is two. A first sealing ring body 18 is installed inside the first fixing block 17, and the surface of the first sealing ring body 18 is installed on the inner wall of the first sealing groove 4. A second fixing block 19 is fixedly installed on the inner wall of the rotating shell 9, and the number of the second fixing blocks 19 is two. A second sealing ring body 20 is installed inside the second fixing block 19, and the surface of the second sealing ring body 20 is installed on the inner wall of the second sealing groove 5.

[0029] Specifically: During the operation of the device, according to the surface of the limiting blocks 16 moving on the inner wall of the limiting grooves 6, the device is more stable during operation and not prone to shaking. By installing the surface of the first sealing ring body 18 between the first fixing block 17 and the first sealing groove 4, the sealing effect is better. When the first fixing block 17 and the first sealing groove 4 are fixed, the first sealing ring body 18 is installed more stably and the sealing effect is better. By installing the surface of the second sealing ring body 20 between the second fixing block 19 and the second sealing groove 5, the sealing effect is better. When the second fixing block 19 and the second sealing groove 5 are fixed, the second sealing ring body 20 is installed more stably. Thus, the sealing rings inside the device are installed more stably and are not prone to deviation in the installation position due to friction, making the device more stable.

[0030] In one embodiment, a first liquid inlet 10 is formed on the surface of the rotating shell 9, and a second liquid inlet 11 is formed on the surface of the rotating shell 9. A first filter membrane 12 is fixedly installed on the inner wall of the first liquid inlet 10, and a first mounting block 13 is fixedly installed on one side of the first liquid inlet 10.

[0031] Specifically: The connecting pipe is installed more stably through the first mounting block 13. The liquid enters the inside of the rotating shell 9 through the connecting pipe. The first filter membrane 12 blocks and filters the impurities in the liquid. Since the first filter membrane 12 is made of a ceramic filter membrane, which has a uniform microporous structure, high filtration accuracy, and strong chemical corrosion resistance, it can filter the impurities in the liquid better, reduce the influence of the impurities in the liquid on the sealing rings, and make the device more perfect.

[0032] In one embodiment, a second filter membrane 14 is fixedly installed on the inner wall of the second liquid inlet 11, and a second mounting block 15 is fixedly installed on one side of the second liquid inlet 11.

[0033] Specifically: The connecting pipe is installed more stably through the second mounting block 15. The liquid enters the interior of the operating shell 9 through the connecting pipe, and the impurities in the liquid are blocked and filtered by the second filter membrane 14. Since the second filter membrane 14 is made of a ceramic filter membrane, it has a uniform microporous structure, high filtration accuracy, and strong chemical corrosion resistance, and can filter the impurities in the liquid better, reducing the influence of the impurities in the liquid on the sealing ring, making the device more perfect.

[0034] In one embodiment, a first sealing ring 21 is installed on the inner wall of the top of the first channel 2, and a second sealing ring 22 is installed on the inner wall of the top of the second channel 3.

[0035] Specifically: The device is installed better through the first sealing ring 21 installed on the inner wall of the top of the first channel 2 and the second sealing ring 22 installed on the inner wall of the top of the second channel 3, making the installation more sealed, with a better installation effect, and making the device more perfect.

[0036] Working principle: When the device starts to be used, the liquid enters the device through the first liquid inlet 10 and the second liquid inlet 11, and then is discharged through the first channel 2 and the second channel 3, so that the first bearing 7 and the second bearing 8 fixedly installed on the surface of the mandrel 1 rotate, driving the operating shell 9 to operate. During the operation process, according to the surface movement of the limiting block 16 on the inner wall of the limiting groove 6, the operating shell 9 sleeved on the surface of the mandrel 1 operates more stably. The surface of the first sealing ring body 18 is installed between the first fixing block 17 and the first sealing groove 4, and the surface of the second sealing ring body 20 is installed between the second fixing block 19 and the second sealing groove 5, making the installation of the first sealing ring body 18 and the second sealing ring body 20 more stable, and it is not easy to generate a position deviation during the operation of the device, so that the installation position deviation of the sealing ring of the device caused by friction is greatly reduced, making the device more perfect; when the connecting pipe is installed on the device to allow the liquid to enter the device, the connecting pipe is connected to the device more stably through the first mounting block 13 and the second mounting block 15. Since the materials of the first filter membrane 12 and the second filter membrane 14 are both ceramic filter membranes, they have a uniform microporous structure, high filtration accuracy, and strong chemical corrosion resistance, and can filter the impurities in the liquid better, reducing the influence of the impurities in the liquid on the sealing ring, making the device more perfect.

[0037] The above is only a preferred embodiment of the present invention, and it is not a limitation to the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A hydraulic rotary joint for reducing the wear of a sealing ring, characterized in that: include: A core shaft (1), a circular hole (101) is provided on the surface of the top of the core shaft (1), a channel 1 (2) is provided on the surface of the top of the core shaft (1), a channel 2 (3) is provided on the surface of the top of the core shaft (1), a running shell (9) is provided on the surface of the core shaft (1), and mounting holes (23) are provided on the surface of the top of the core shaft (1) at equal distances.

2. A hydraulic rotary joint for reducing seal ring wear according to claim 1, characterized in that: The surface of the core shaft (1) is provided with a sealing groove one (4), and the number of the sealing groove one (4) is two; the surface of the core shaft (1) is provided with a sealing groove two (5), and the number of the sealing groove two (5) is two; and the surface of the core shaft (1) is provided with limiting grooves (6) at equal distances.

3. A hydraulic rotary joint for reducing seal ring wear according to claim 1, characterized in that: A top fixed sleeve on the surface of the core shaft (1) is provided with a bearing 1 (7), and a bottom fixed sleeve on the surface of the core shaft (1) is provided with a bearing 2 (8). The surface of the bearing 1 (7) is fixedly embedded in the inner wall of the operating shell (9), and the surface of the bearing 2 (8) is fixedly embedded in the inner wall of the operating shell (9).

4. A hydraulic rotary joint for reducing seal ring wear according to claim 1, characterized in that: The inner wall of the operating shell (9) is fixedly mounted with limiting blocks (16) at equal distances, and the surface of the limiting blocks (16) moves on the inner wall of the limiting groove (6). The inner wall of the operating shell (9) is fixedly mounted with a fixing block 1 (17), and the number of the fixing blocks 1 (17) is two. The inner wall of the fixing block 1 (17) is mounted with a sealing ring body 1 (18), and the surface of the sealing ring body 1 (18) is mounted on the inner wall of the sealing groove 1 (4). The inner wall of the operating shell (9) is fixedly mounted with a fixing block 2 (19), and the number of the fixing blocks 2 (19) is two. The inner wall of the fixing block 2 (19) is mounted with a sealing ring body 2 (20), and the surface of the sealing ring body 2 (20) is mounted on the inner wall of the sealing groove 2 (5).

5. A hydraulic rotary joint for reducing seal ring wear according to claim 1, characterized in that: The surface of the operating shell (9) is provided with a liquid inlet one (10), the surface of the operating shell (9) is provided with a liquid inlet two (11), a filter membrane one (12) is fixedly mounted on the inner wall of the liquid inlet one (10), and a mounting block one (13) is fixedly mounted on one side of the liquid inlet one (10).

6. A hydraulic rotary joint for reducing seal ring wear according to claim 5, characterized in that: A second filter membrane (14) is fixedly mounted on the inner wall of the second liquid inlet (11), and a second mounting block (15) is fixedly mounted on one side of the second liquid inlet (11).

7. A hydraulic rotary joint for reducing seal ring wear according to claim 1, characterized in that: The inner wall at the top of the channel one (2) is installed with a sealing ring one (21), and the inner wall at the top of the channel two (3) is installed with a sealing ring two (22).

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