Sealing structure for rotary joint connection

Abstract

The utility model relates to the field of hydrodynamic force and fluid transmission, and discloses a sealing structure for rotary joint connection, which comprises a connecting pipe, the bottom end of the outer wall of the connecting pipe is rotatably connected with a merging pipe, the outer wall of the merging pipe is fixedly connected with a fixing ring, the inner wall of the fixing ring is fixedly connected with a round pipe, and the round pipe is fixedly connected with a sealing ring. A spring is fixedly connected to the inner wall of the round pipe, an ejector rod is fixedly connected to the outer wall of the spring and slides in the inner wall of the fixing ring through the spring, a clamping piece is clamped to the outer wall of the ejector rod, the inner wall of the clamping piece is fixedly connected to the outer wall of the connecting pipe, and a clamping assembly is arranged in the connecting pipe. And the connecting pipe quickly clamps the rotary joint through the clamping assembly. According to the utility model, the rotary interface is quickly aligned and fixed through the clamping assembly, so that the stability and the reliability of the rotary joint in the operation process are ensured, the interface looseness caused by vibration and other reasons is reduced, the sealing performance is favorably improved, and the risk of medium leakage is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluid power and fluid transmission field especially relates to a sealing structure for rotary joint connection. BACKGROUND

[0002] The rotary joint is a kind of precision mechanical sealing device, it allows fluid transmission between rotating equipment and non-rotating equipment, while keeping sealed, prevent leakage, the reliability and performance of rotary joint are crucial to ensure continuous production process and equipment normal operation.

[0003] Although this device plays an important role in production, however, the existing sealing structure for rotary joint connection still has some problems, for example, the existing rotary joint sealing structure often needs multiple steps to install, including accurate alignment, adjustment and fixation, which needs professional technical personnel to operate, increases installation difficulty and time cost, and due to the complexity of sealing structure, the environmental cleanliness, temperature and other conditions have higher requirements during installation, otherwise it is easy to cause poor sealing effect or installation failure, secondly some devices simply rely on flange to be stable, but flange connection relies on the close contact between sealing surfaces to prevent leakage, and in the long-term use process, due to rotation and vibration, the sealing surface may be worn, leading to the decline of sealing performance, and flange connection needs accurate alignment, if the alignment is not accurate, it will cause the gap between sealing surfaces, thereby affecting the sealing effect. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving the shortcomings in the prior art, and provides a sealing structure for rotary joint connection, which realizes quick alignment and fixation of rotary interface through the clamping component, reduces the loosening of interface caused by vibration and the like, and improves the sealing performance.

[0005] To achieve the above object, the utility model provides the following technical scheme: a sealing structure for rotary joint connection, including the pipe, the outer wall bottom of the pipe is rotatably connected with the pipe, the outer wall of the pipe is fixedly connected with the fixed ring, the inner wall of the fixed ring is fixedly connected with the round pipe, the inner wall of the round pipe is fixedly connected with the spring, the outer wall of the spring is fixedly connected with the top rod, the top rod slides in the inner wall of the fixed ring through the spring, the outer wall of the top rod is clamped with the clamping piece, the inner wall of the clamping piece is fixedly connected with the outer wall of the pipe, the inside of the pipe is provided with the clamping component, and the pipe is quickly clamped with the rotary joint through the clamping component.

[0006] Further, the clamping component includes a disc provided on the inner wall of the pipe, the inner wall of the disc is slidably connected with a plurality of sliding columns, the outer wall of the sliding column is fixedly connected with the clamping plate, and the sliding column wraps and clamps the rotary interface through the clamping plate.

[0007] Further, the inside of the disc is provided with a plurality of sliding grooves for the sliding of the sliding column on the disc, and the bottom end of the sliding column is fixedly connected with a fixed block for ensuring the sliding of the sliding column.

[0008] Further, the outer wall of the merging pipe is through the connecting pipe and rotationally connected with a disc, the bottom end of the merging pipe is fixedly connected with a second sealing device, the inside of the second sealing device is provided with a sealing assembly, and the second sealing device is connected with another merging pipe through the sealing assembly.

[0009] Further, the sealing assembly comprises a bottom pipe fixedly connected with the four corners of the inner wall of the second sealing device, the inner wall of the bottom pipe is fixedly connected with a compression spring for balancing pressure, the inside of the second sealing device is provided with a threaded groove for fixing a threaded ring.

[0010] Further, the second sealing device is connected with the first sealing device through the threaded ring, and the threaded ring is threadedly connected with the second sealing device.

[0011] The utility model has the advantages of the following beneficial effects:

[0012] In the utility model, the rotary joint is quickly aligned and fixed through the clamping component, the stability and reliability of the rotary joint in the running process are ensured, the interface loosening caused by vibration and the like is reduced, the sealing performance is improved, and the risk of medium leakage is reduced.

[0013] In the utility model, the sealing assembly effectively balances the pressure when the device is fluctuated in the use of the rotary joint, the sealing is ensured not to be invalid due to pressure change, the pressure is uniformly distributed, the stress concentration on the sealing surface is reduced, and the service life of the sealing element is prolonged. DRAWINGS

[0014] Figure 1 A perspective view of a sealing structure for a rotary joint connection is provided for the utility model;

[0015] Figure 2 A compression spring display diagram of a sealing structure for a rotary joint connection is provided for the utility model;

[0016] Figure 3 A second sealing device analysis diagram of a sealing structure for a rotary joint connection is provided for the utility model;

[0017] Figure 4 A connecting pipe analysis diagram of a sealing structure for a rotary joint connection is provided for the utility model;

[0018] Figure 5The utility model provides a kind of sealing structure's clamping plate display drawing for rotary joint connection.

[0019] Legend:

[0020] 1, adapter pipe;2, clamping piece;3, merging pipe;4, fixed ring;5, round pipe;6, ejector rod;7, first sealer;8, second sealer;9, threaded ring;10, threaded groove;11, compression spring;12, bottom pipe;13, spring;14, disc;15, sliding column;16, clamping plate;17, sliding slot;18, fixed block. Specific implementation

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] Refer to Figure 1 , Figure 4 and Figure 5 , the utility model provides an embodiment: a kind of sealing structure for rotary joint connection, including adapter pipe 1, the outer wall bottom end of adapter pipe 1 is rotatably connected with merging pipe 3, the outer wall of merging pipe 3 is fixedly connected with fixed ring 4, the inner wall of fixed ring 4 is fixedly connected with round pipe 5, the inner wall of round pipe 5 is fixedly connected with spring 13, the outer wall of spring 13 is fixedly connected with ejector rod 6, ejector rod 6 is slid in the inner wall of fixed ring 4 by spring 13, the outer wall of ejector rod 6 is clamped with clamping piece 2, the inner wall of clamping piece 2 is fixedly connected in the outer wall of adapter pipe 1, adapter pipe 1 is provided with clamping stop component in the inside, adapter pipe 1 is quickly clamped by clamping stop component to rotary joint, clamping stop component includes the disc 14 of setting in the inner wall of adapter pipe 1, the inner wall of disc 14 is slidably connected with several sliding columns 15, the outer wall of sliding column 15 is fixedly connected with clamping plate 16, sliding column 15 is wrapped and clamped to rotary interface by clamping plate 16, several sliding slots 17 are arranged in the inside of disc 14, sliding slot 17 is used for the sliding of sliding column 15 on disc 14, the bottom end of sliding column 15 is fixedly connected with fixed block 18, and fixed block 18 is used to ensure the sliding of sliding column 15.

[0023] Specifically, by taking out the two rotating interfaces that need to be connected, and confirming whether their models and specifications match, then by pulling the top rod 6 in the direction of the fixed ring 4, causing it to disengage from the clamping piece 2 of the clamping position, through this action, the locking state of the clamping piece 2 is released, preparing for subsequent rotation operation, then while pulling the top rod 6, by pressing down the top rod 6, causing it to exert pressure on the spring 13, resulting in the spring 13 being forced to compress and enter the circular tube 5, then after the lock is released, by grabbing the clamping piece 2 to drive the adapter pipe 1 to rotate, the rotation of the clamping piece 2 will drive the disc 14 inside the adapter pipe 1 to rotate, then through the rotation of the disc 14, the sliding column 15 on the disc 14 will move along the sliding groove 17, then through the movement of the sliding column 15, the fixed clamping plate 16 will gradually approach the rotating connector entering from the adapter pipe 1, then when the clamping plate 16 inside the disc 14 tightly clamps the rotating connector, reaching a firm fixed state, at this time the clamping piece 2 cannot drive the adapter pipe 1 to rotate anymore, indicating that the installation of the rotating connector on one side is complete, then repeat the above steps for the rotating connector on the other side, then when the rotating connectors at both ends have been operated according to the above structure and are firmly fixed, it is considered that the installation is complete, check all connection points to ensure that there is no looseness or leakage, then it can be put into use, through the above structure, the connection of the rotating interface not only realizes quick alignment and fixation, but also ensures the stability and sealing of the connection, at the same time, the device is suitable for application scenarios that need to be frequently connected and disconnected, greatly improving the work efficiency and safety of the equipment.

[0024] With reference to Figure 1 , Figure 2 and Figure 3 , the outer wall of the merging pipe 3 penetrates the adapter pipe 1 and is rotationally connected with the disc 14, the bottom end of the merging pipe 3 is fixedly connected with the second sealing device 8, the inside of the second sealing device 8 is provided with a sealing assembly, the second sealing device 8 is connected with another merging pipe 3 through the sealing assembly, the sealing assembly includes a bottom pipe 12 fixedly connected to the inner wall of the second sealing device 8 at four corners, the inner wall of the bottom pipe 12 is fixedly connected with a compression spring 11, the compression spring 11 is used for balancing pressure, a threaded groove 10 is formed in the inside of the second sealing device 8, the threaded groove 10 is used for fixing a threaded ring 9, the second sealing device 8 is connected with the first sealing device 7 through the threaded ring 9, and the threaded ring 9 is in threaded connection with the second sealing device 8.

[0025] Specifically, by accurately aligning the threaded ring 9 fixed on the first sealer 7 with the threaded groove 10 opened on the second sealer 8, it is ensured that the threaded ring 9 and the threaded groove 10 can be smoothly docked, then by rotating the first sealer 7, the threaded ring 9 gradually slides along the direction of the threaded groove 10, through this process, the engagement of the threaded ring 9 and the threaded groove 10 will make the first sealer 7 gradually approach the second sealer 8, then as the first sealer 7 rotates, the distance between the first sealer 7 and the second sealer 8 will gradually shorten, then the operator continues to rotate until there is no gap between the first sealer 7 and the second sealer 8, ensuring the sealing performance, then while rotating the first sealer 7, ensure that the compression spring 11 in the bottom pipe 12 inside the second sealer 8 keeps in contact with the outer wall of the first sealer 7, ensuring that the compression spring 11 can be uniformly stressed in the subsequent compression process, then continue to rotate the first sealer 7, make it press against the compression spring 11 at the four corners of the second sealer 8, make the compression spring 11 stressed and compressed and gradually enter the bottom pipe 12, then when there is no gap between the first sealer 7 and the second sealer 8, water or air is introduced into the merged pipe 3 to test the sealing performance of the connection, then by carefully observing the connection between the first sealer 7 and the second sealer 8, it is ensured that there is no gas or liquid leakage, if there is no leakage at the connection, it is considered to be installed, the air tightness is good, through the above structure, not only the sealing performance is ensured, but also the installation efficiency and reliability are improved, which provides protection for the normal operation of the equipment.

[0026] Working principle: first take out the device, then the first sealing device 7 fixed on the thread ring 9 is aligned with the thread groove 10 on the second sealing device 8, then through the rotation of the first sealing device 7, the thread ring 9 gradually slides along the thread groove 10 to the second sealing device 8, the distance between the first sealing device 7 and the second sealing device 8 is gradually shortened until there is no gap between the first sealing device 7 and the second sealing device 8, while the first sealing device 7 is rotating, ensure that the compression spring 11 in the bottom pipe 12 of the second sealing device 8 contacts the outer wall of the first sealing device 7, then while the first sealing device 7 rotates towards the second sealing device 8, the compression spring 11 moves towards the second sealing device 8, the compression spring 11 is compressed and gradually enters the bottom pipe 12, then after there is no gap between the first sealing device 7 and the second sealing device 8, water or air is introduced into the merging pipe 3 fixed on the first sealing device 7 and the second sealing device 8 respectively, then pay attention to the connection between the first sealing device 7 and the second sealing device 8, after ensuring that there is no gas or liquid flowing out, it is considered to be installed, the air tightness is good, then take out the two rotating interfaces that need to be connected, then operate the fixed ring 4 on one end of the merging pipe 3, pull the top rod 6 towards the fixed ring 4, make the top rod 6 move away from the clamping piece 2, make the clamping piece 2 unlock and prepare to rotate, at the same time, through the pressing of the top rod 6, the top rod 6 extrudes the spring 13, the spring 13 is compressed and enters the circular pipe 5, then rotate the clamping piece 2, make the clamping piece 2 rotate with the disc 14 inside the adapter pipe 1, then through the rotation of the disc 14, the sliding column 15 on the disc 14 slides along the sliding groove 17, then through the sliding of the sliding column 15, the sliding column 15 gradually approaches the rotating joint entering from the adapter pipe 1 with the fixed clamping plate 16, then when the clamping plate 16 inside the disc 14 clamps the rotating joint firmly, that is, the clamping piece 2 cannot continue to rotate with the adapter pipe 1, it is considered that the installation of the rotating joint on one side is completed, then the other side is operated according to the above structure, it is considered that the installation is completed, then it can be put into use.

[0027] Finally, it should be pointed out that: the above only for preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A sealing structure for a rotary joint connection, comprising a nipple (1), characterized in that: The outer wall bottom end of the adapter pipe (1) is rotationally connected with a merging pipe (3), the outer wall of the merging pipe (3) is fixedly connected with a fixed ring (4), the inner wall of the fixed ring (4) is fixedly connected with a circular pipe (5), the inner wall of the circular pipe (5) is fixedly connected with a spring (13), the outer wall of the spring (13) is fixedly connected with a top rod (6), the top rod (6) slides in the inner wall of the fixed ring (4) through the spring (13), the outer wall of the top rod (6) is clamped with a clamping piece (2), the inner wall of the clamping piece (2) is fixedly connected with the outer wall of the adapter pipe (1), the inside of the adapter pipe (1) is provided with a clamping piece assembly, and the adapter pipe (1) quickly clamps the rotary joint through the clamping piece assembly.

2. A seal structure for a rotary joint connection according to claim 1, characterized in that: The clamping piece assembly comprises a disc (14) arranged on the inner wall of the adapter pipe (1), a plurality of sliding columns (15) slidably connected to the inner wall of the disc (14), and clamping plates (16) fixedly connected to the outer wall of the sliding columns (15), wherein the sliding columns (15) wrap and clamp the rotary joint through the clamping plates (16).

3. A seal structure for a rotary joint connection according to claim 2, characterized in that: The inside of the disc (14) is provided with a plurality of sliding grooves (17) for sliding of the sliding columns (15) on the disc (14), and the bottom end of the sliding column (15) is fixedly connected with a fixed block (18) for ensuring sliding of the sliding column (15).

4. A seal structure for a rotary joint connection according to claim 2, characterized in that: The outer wall of the merging pipe (3) penetrates the adapter pipe (1) and is rotationally connected with the disc (14), the bottom end of the merging pipe (3) is fixedly connected with a second sealing device (8), the inside of the second sealing device (8) is provided with a sealing assembly, and the second sealing device (8) is connected with another merging pipe (3) through the sealing assembly.

5. A seal structure for a rotary joint connection according to claim 4, characterized in that: The sealing assembly comprises a bottom pipe (12) fixedly connected to the inner wall of the second sealing device (8), a compression spring (11) fixedly connected to the inner wall of the bottom pipe (12), and a threaded groove (10) formed in the inside of the second sealing device (8) for fixing a threaded ring (9).

6. A seal structure for a rotary joint connection according to claim 5, characterized in that: The second sealing device (8) is connected with a first sealing device (7) through the threaded ring (9), and the threaded ring (9) is threadedly connected with the second sealing device (8).

Images