Coaxial airtight joint of rotating shaft

Abstract

The utility model provides a coaxial airtight joint of a rotating shaft. The coaxial airtight joint comprises a first bracket, a second bracket, the rotating shaft, a first bearing, a second bearing and a sealing ring, the first support is provided with a cylindrical installation groove which is concave inwards, the second support is installed at the upper end of the installation groove, the first bearing is installed on the second support, and the second bearing and the sealing ring are located below the first bearing, installed on the rotating shaft and installed in the cylindrical installation groove at the same time. The sealing ring elastically abuts against the inner wall of the cylindrical mounting groove, and a first butt joint opening is formed in the lower end of the cylindrical mounting groove. Through the elastic abutting design of the sealing ring and the inner wall of the cylindrical installation groove and the arrangement of the oil groove in the inner side of the sealing ring, the sealing performance of the airtight connector is effectively enhanced, the risk of gas leakage is reduced, and the airtight connector is suitable for being applied in the high-pressure environment.

Description

Technical Field

[0001] The utility model relates to the technical field of airtight joint devices, and particularly relates to a rotating shaft coaxial airtight joint. Background Technique

[0002] Rotating shaft coaxial airtight joints are widely used in equipment that needs to maintain gas tightness in a rotating state, such as industrial machinery, medical equipment, etc.; traditional rotating shaft coaxial airtight joints usually consist of several fixed parts and rotating parts, where the fixed parts provide structural support and the rotating parts achieve the rotation function while maintaining airtightness.

[0003] Deficiencies of the prior art:

[0004] 1. Unstable sealing performance: Due to long-term operation or material wear, the existing sealing structure is prone to cause a decrease in airtightness, especially in a high-pressure environment, and the leakage problem is more prominent.

[0005] 2. Inconvenient maintenance: When it is necessary to replace the sealing ring or other components, the existing design is often complex in structure, inconvenient to disassemble and assemble, increasing the maintenance cost and downtime.

[0006] 3. Friction and wear: Due to the direct contact between the rotating shaft and the sealing ring, the sealing effect may be reduced due to wear after long-term operation, increasing the maintenance frequency.

[0007] Therefore, there are deficiencies in the prior art and further improvement is needed. Content of the Utility Model

[0008] In view of the problems existing in the prior art, the utility model provides a rotating shaft coaxial airtight joint.

[0009] To achieve the above object, the specific scheme of the utility model is as follows:

[0010] The utility model provides a rotating shaft coaxial airtight joint, comprising:

[0011] A first bracket, a second bracket, a rotating shaft, a first bearing, a second bearing, and a sealing ring;

[0012] The first bracket is provided with an inwardly recessed cylindrical installation groove, the second bracket is installed at the upper end of the installation groove, the first bearing is installed on the second bracket, the second bearing and the sealing ring are installed on the rotating shaft below the first bearing and are simultaneously installed in the cylindrical installation groove, the sealing ring is elastically abutted against the inner wall of the cylindrical installation groove, and a first docking port is provided at the lower end of the cylindrical installation groove.

[0013] Further, an air pump is also provided on the first bracket, and the air pump is connected to the first docking port.

[0014] Further, a first motor is also provided on the first bracket, and a first gear is provided on the rotating shaft of the first motor;

[0015] A second gear is further provided at the upper end of the rotating shaft, and the first gear meshes with the second gear;

[0016] The first motor drives the second gear to rotate through the first gear, and then drives the rotating shaft to rotate.

[0017] Further, a control main board is also installed on the side wall of the first bracket, and the control main board is electrically connected to the first motor and the air pump.

[0018] Further, two first batteries are also installed on the first bracket, and the first batteries are connected to the control main board for power supply.

[0019] Further, an oil groove is provided inside the sealing ring to reduce friction and enhance sealing.

[0020] Further, a solenoid valve electrically connected to the control main board is also provided on the first bracket. The air pump is connected to the first pair of interfaces through the solenoid valve, and the control main board controls the opening and closing states of the solenoid valve to regulate the negative pressure.

[0021] Adopting the technical solution of the present utility model has the following beneficial effects:

[0022] 1. Improve airtightness:

[0023] The elastic abutting design of the sealing ring against the inner wall of the cylindrical installation groove and the setting of the oil groove inside the sealing ring effectively enhance the sealing performance of the airtight joint, reduce the risk of gas leakage, and are suitable for applications in high-pressure environments.

[0024] 2. Enhance structural stability:

[0025] The setting of the first bearing and the second bearing, as well as the precise installation of the rotating shaft with multiple components, improve the structural stability of the entire joint and the smoothness during rotation, and reduce the wear and faults caused by mechanical vibration.

[0026] 3. Facilitate maintenance and repair:

[0027] The design is simple and clear, and each component is easy to disassemble and assemble, which is convenient for users to perform regular maintenance or replace components during daily use, reducing the maintenance cost and downtime.

[0028] 4. Integrated control management:

[0029] The electrical connection between the control main board and the air pump and the motor realizes the centralized control and management of the operation of the connector. The airtight state can be monitored in real time through the electronic system, and the air pressure or rotation speed can be adjusted in a timely manner, enhancing the reliability and automation level of the system.

[0030] 5. Efficient power transmission:

[0031] The first motor drives the rotation shaft to rotate through the way of gear meshing. This mechanical structure design ensures the efficiency of power transmission, reduces power loss, and improves the working efficiency of the overall device. Description of the drawings

[0032] Figure 1 is the perspective view of the present utility model;

[0033] Figure 2 is the perspective view of the present utility model from the bottom view angle;

[0034] Figure 3 is the exploded view of the present utility model;

[0035] Figure 4 is the cross-sectional view of the present utility model;

[0036] Figure 5 is the perspective view of the present utility model after removing the first bracket;

[0037] Figure 6 is the perspective view of the first bracket of the present utility model from the top view angle;

[0038] Figure 7 is the perspective view of the first bracket of the present utility model from the bottom view angle;

[0039] Figure 8 is the perspective view of the present utility model after installing external components.

[0040] In the figure:

[0041] 1. First bracket; 2. Second bracket; 3. Rotation shaft; 4. First bearing; 5. Second bearing; 6. Sealing ring;

[0042] 7. Installation groove; 8. First pair of interfaces; 9. Air pump; 10. First motor; 11. First gear;

[0043] 12. Second gear; 13. Control main board; 14. First battery; 15. Oil groove; 16. External components; 17. Solenoid valve. Detailed implementation manners

[0044] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present utility model and not for limiting the present utility model. Additionally, it should be noted that for the sake of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0045] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0047] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "front", "rear", "left", and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0048] Combined with Figures 1 - 8 As shown, the present utility model provides a rotating shaft 3 coaxial airtight joint, including:

[0049] A first bracket 1, a second bracket 2, a rotating shaft 3, a first bearing 4, a second bearing 5, and a sealing ring 6;

[0050] The first bracket 1 is provided with an inwardly concave cylindrical mounting groove 7. The second bracket 2 is mounted at the upper end of the mounting groove 7. The first bearing 4 is mounted on the second bracket 2. The second bearing 5 and the sealing ring 6 are located below the first bearing 4, mounted on the rotating shaft 3 and simultaneously mounted in the cylindrical mounting groove 7. The sealing ring 6 is elastically abutted against the inner wall of the cylindrical mounting groove 7. A first docking port 8 is provided at the lower end of the cylindrical mounting groove 7.

[0051] A gas pump 9 is further provided on the first bracket 1, and the gas pump 9 is connected to the first docking port 8.

[0052] A first motor 10 is further provided on the first bracket 1, and a first gear 11 is provided on the rotating shaft of the first motor 10;

[0053] A second gear 12 is further provided at the upper end of the rotating shaft 3, and the first gear 11 meshes with the second gear 12;

[0054] The first motor 10 drives the second gear 12 to rotate through the first gear 11, and then drives the rotating shaft 3 to rotate.

[0055] A control main board 13 is further mounted on the side wall of the first bracket 1, and the control main board 13 is electrically connected to the first motor 10 and the gas pump 9.

[0056] Two first batteries 14 are further mounted on the first bracket 1, and the first batteries 14 are connected to the control main board 13 for power supply.

[0057] An oil groove 15 is provided inside the sealing ring 6 to reduce friction and enhance sealing.

[0058] A solenoid valve 17 electrically connected to the control main board 13 is further provided on the first bracket 1. The gas pump 9 is connected to the first docking port 8 through the solenoid valve 17. The control main board 13 controls the opening and closing states of the solenoid valve 17 to regulate the negative pressure.

[0059] The principle of the present utility model is as follows:

[0060] 1. Structural basis

[0061] The coaxial airtight joint of the rotating shaft 3 involved in the present utility model mainly consists of the following parts:

[0062] The first bracket 1: As the main support structure of the entire device, it is provided with an inwardly concave cylindrical mounting groove 7.

[0063] The second bracket 2: Mounted at the upper end of the cylindrical mounting groove 7 of the first bracket 1 for supporting the first bearing 4.

[0064] The rotating shaft 3: Located at the center of the cylindrical mounting groove 7 and rotates through bearings.

[0065] The first bearing 4: Installed on the second bracket 2 to support the upper part of the rotating shaft 3.

[0066] The second bearing 5: Installed on the rotating shaft 3, located below the first bearing 4, and further supports the rotating shaft 3.

[0067] The sealing ring 6: Installed on the rotating shaft 3 and elastically abuts against the inner wall of the cylindrical mounting groove 7 to ensure airtightness.

[0068] 2. Power transmission

[0069] The first motor 10: Installed on the first bracket 1, and a first gear 11 is provided on its rotating shaft.

[0070] The second gear 12: Installed at the upper end of the rotating shaft 3 and meshes with the first gear 11.

[0071] When the first motor 10 is started, through the meshing of the first gear 11 and the second gear 12, the rotating shaft 3 is driven to rotate.

[0072] 3. Airtightness guarantee

[0073] The sealing ring 6: An oil groove 15 is provided inside, reducing the friction between the rotating shaft 3 and the sealing ring 6, and at the same time enhancing the sealing effect.

[0074] The air pump 9: Installed on the first bracket 1 and connected to the first pair of interfaces 8. Through the air pump 9, air can be supplied or sucked into the joint when needed, providing an adsorption force for the external component 16.

[0075] 4. Control and power supply

[0076] The control main board 13: Installed on the side wall of the first bracket 1, electrically connected to the first motor 10 and the air pump 9, and used to control the start and stop of the motor and the working state of the air pump 9.

[0077] Battery: Two batteries are installed on the first bracket 1 to supply power to the control main board 13 to ensure the normal operation of the entire system.

[0078] Operation process

[0079] Preparations before startup:

[0080] The rotating shaft coaxial airtight joint is installed, and the sealing ring 6 is closely attached to the inner wall of the cylindrical mounting groove 7.

[0081] The control main board 13 is in a standby state, waiting for instructions.

[0082] Startup process:

[0083] The control main board 13 receives a startup signal and activates the first motor 10.

[0084] The first motor 10 causes the rotating shaft 3 to start rotating through a gear drive.

[0085] Meanwhile, the control main board 13 controls the air pump 9 to work, supplying air or sucking air into the joint.

[0086] During operation:

[0087] The rotating shaft 3 continues to rotate, and the oil groove 15 in the sealing ring 6 reduces friction and maintains a good sealing state.

[0088] The control main board 13 continuously monitors the working states of the motor and the air pump 9 and makes adjustments when necessary.

[0089] Stopping process:

[0090] The control main board 13 receives a stop signal and shuts down the first motor 10 and the air pump 9.

[0091] The rotating shaft 3 gradually stops rotating, the air pump 9 stops supplying or sucking air, and the whole system enters a static state.

[0092] Through the above working principle, the present utility model provides a solution for a coaxial airtight joint of a rotating shaft 3 with a compact structure, easy control, and good airtightness.

[0093] The above are only the preferred embodiments of the present utility model, and thus do not limit the scope of the utility model of the present utility model. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the protection scope of the present utility model.

Claims

1. A rotary shaft coaxial airtight joint, characterized in that, Including: A first bracket, a second bracket, a rotating shaft, a first bearing, a second bearing, and a sealing ring; The first bracket is provided with an inwardly recessed cylindrical mounting groove. The second bracket is mounted at the upper end of this mounting groove. The first bearing is mounted on this second bracket. The second bearing and the sealing ring are located below the first bearing, mounted on the rotating shaft and simultaneously mounted in the cylindrical mounting groove. The sealing ring elastically abuts against the inner wall of the cylindrical mounting groove. A first docking port is provided at the lower end of the cylindrical mounting groove.

2. The coaxial airtight joint of the rotating shaft according to claim 1, wherein A pneumatic pump is further provided on the first bracket, and this pneumatic pump is connected to the first docking port.

3. The coaxial airtight joint of the rotating shaft according to claim 2, wherein A first motor is further provided on the first bracket, and a first gear is provided on the rotating shaft of this first motor; A second gear is further provided at the upper end of the rotating shaft, and the first gear meshes with the second gear; The first motor drives the second gear to rotate through the first gear, and further drives the rotating shaft to rotate.

4. The coaxial airtight joint of the rotating shaft according to claim 3, wherein A control main board is further mounted on the side wall of the first bracket, and this control main board is electrically connected to the first motor and the pneumatic pump.

5. The coaxial airtight joint of the rotating shaft according to claim 4, wherein Two first batteries are further mounted on the first bracket, and these first batteries are connected to the control main board for power supply.

6. The coaxial airtight joint of the rotating shaft according to claim 1, wherein An oil groove is provided inside the sealing ring for reducing friction and enhancing sealing.

7. The coaxial airtight joint of the rotating shaft according to claim 2, wherein A solenoid valve electrically connected to the control main board is further provided on the first bracket. The pneumatic pump is connected to the first docking port through the solenoid valve. The control main board controls the opening and closing states of the solenoid valve to regulate the negative pressure magnitude.

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