Medium voltage high speed rotary joint

Abstract

The utility model discloses a medium -voltage high -speed rotary joint, including the joint, the terminal rotation connection rotating pipe of joint, be equipped with the inner tube in rotating pipe, the inner tube rotation is connected in the inside of joint, the terminal screw thread connection of inner tube has the connecting pipe, the outer edge coaxial fixed of rotating pipe has the fixed ring, and the outer edge of fixed ring penetrates a plurality of through -holes, and the through -hole inside slide connection fixing piece, and fixing piece slide penetrates rotating pipe, and with connecting pipe insertion, and the outer edge slide of rotating pipe sets up the support ring, and the support ring is located one side fixed connection adjusting part of fixed ring, and adjusting part slide penetrates fixed ring, and with fixing piece abuts. The utility model discloses through setting up the linkage structure of slide type fixing piece and adjusting part, only need single -hand slide support ring to drive multiple fixing pieces simultaneously and disconnect connecting pipe, realize quick disassembly. Compared with prior art needs two -hand operation single self -tapping screw mode, has improved the dismounting efficiency significantly, is especially suitable for the working condition of frequent overhaul.

Description

Technical Field

[0001] This utility model relates to the field of joint technology, and in particular to medium-pressure high-speed rotary joints. Background Technology

[0002] Patent publication number CN217208254U discloses a high-pressure, high-speed rotary joint, relating to the field of rotary joint technology. It includes a housing with an inner pipe inside. One end of the inner pipe's cavity is connected to the end face of the housing, and the other end is connected to the bottom surface of the other end of the housing. This high-pressure, high-speed rotary joint mates the pipe to be rotated with its external thread. A hex wrench is used to pull a wrench plate, moving a sliding post and a magnetic post. This causes the magnetic post to retract into the rotating disk. Rotating the wrench plate rotates the sliding post, magnetic post, rotating disk, threaded post, and self-tapping screw. The engagement of the threaded post and threaded hole causes the threaded post and self-tapping screw to move downwards, gradually screwing the self-tapping screw into the outer wall of the pipe to be rotated. This fixes the pipe in place on the external thread, improving the practicality of the high-pressure, high-speed rotary joint.

[0003] However, this patent uses self-tapping screws and waist-shaped slots to connect the pipe to the rotating mandrel. During installation, it requires both hands to remove a single screw from the pipe, which is quite troublesome. Furthermore, the repulsive force between the magnetic block and the magnetic column may weaken due to temperature changes or magnetic attenuation, leading to fixing failure and affecting the firmness of the connection between the pipe and the mandrel. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a medium-pressure high-speed rotary joint.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a medium-pressure high-speed rotary joint, comprising a joint, a rotating tube rotatably connected to the end of the joint, an inner tube provided inside the rotating tube, the inner tube rotatably connected to the interior of the joint, a connecting tube threaded to the end of the inner tube, a fixing ring coaxially fixed to the outer edge of the rotating tube, a plurality of through holes penetrating the outer edge of the fixing ring, a fixing member slidably connected inside the through holes, the fixing member slidably penetrating the rotating tube and inserting into the connecting tube, a support ring slidably sleeved on the outer edge of the rotating tube, an adjusting member fixedly connected to one side of the fixing ring, the adjusting member slidably penetrating the fixing ring and abutting against the fixing member.

[0006] As a further description of the above technical solution: three equidistant annularly distributed arc-shaped grooves are opened coaxially on the outer edge of the rotating tube. Arc-shaped blocks are slidably connected in the arc-shaped grooves. The arc-shaped blocks are fixedly connected to the support ring. A first spring is fixed between the inner wall of the arc-shaped groove and the arc-shaped block. By using the arc-shaped block, the arc-shaped groove and the first spring to slidably sleeve the support ring on the outer edge of the rotating tube, it is convenient to drive the adjusting component to release the fixing component from the outer edge of the connecting tube.

[0007] As a further description of the above technical solution: the fixing member includes a sleeve that is slidably fitted inside the through hole, a plug that is slidably connected inside the sleeve, a threaded groove coaxially formed on the top surface of the plug, a bolt that is threadedly connected inside the threaded groove, the bolt being rotatably connected to the top end of the sleeve, a plurality of positioning holes formed on the outer edge of the connecting tube, a plurality of slots formed on the outer end of the inner tube, the plug slidingly passing through the positioning holes and being inserted into the slots, and the adjusting member abutting against the outer edge of the sleeve; by setting the fixing member, it is convenient to fix the connecting tube and the inner tube.

[0008] As a further description of the above technical solution: two guide grooves are symmetrically opened on the inner wall of the through hole, and a guide block is slidably connected in the guide groove. The guide block is fixedly connected to the sleeve, and a second spring is fixed between the top surface of the guide block and the top wall of the guide groove. By using the second spring, the guide block and the guide groove to slidably connect the sleeve to the through hole in the fixing ring, it is convenient to position and initially fix the connecting pipe and the inner pipe.

[0009] As a further description of the above technical solution: two sliding grooves are symmetrically opened on the inner wall of the sleeve, and a slider is slidably connected in the sliding groove. The slider is fixedly connected to the insertion block. By using the sliding groove and the slider to slidably connect the insertion block in the sleeve, the sliding of the insertion block plays a guiding and limiting role.

[0010] As a further description of the above technical solution: the adjusting component includes three first support rods distributed in an equidistant annular array on the side of the support ring. The first support rods are fixedly connected to the support ring. The second support rods are attached to the upper side of the first support rods. The inner wall of the through hole passes through the through groove. The second support rods slide through the through groove and are fixedly connected to the sleeve. By setting the adjusting component, it is convenient to push the sleeve out of the positioning hole at one time and at the same time.

[0011] As a further description of the above technical solution: the first support rod and the second support rod are two obliquely symmetrical right-angled triangular rods, and when the first support rod and the second support rod are combined, they form a complete rectangular frame rod.

[0012] This utility model has the following beneficial effects:

[0013] Compared to existing technologies, this medium-pressure high-speed rotary joint, through its linkage structure of sliding fixing parts and adjusting parts, allows multiple fixing parts to be simultaneously driven out of the connecting pipe by sliding the support ring with only one hand, achieving rapid disassembly. Compared to existing technologies that require two hands to operate a single self-tapping screw, this significantly improves disassembly and assembly efficiency, making it particularly suitable for frequent maintenance conditions. Attached Figure Description

[0014] Figure 1 This is a perspective view of the overall structure of the medium-pressure high-speed rotary joint proposed in this utility model;

[0015] Figure 2 This is a main sectional view of the connection between the mandrel and the connecting pipe of the medium-pressure high-speed rotary joint proposed in this utility model.

[0016] Figure 3 This is a side view of the overall structure of the first support rod and the second support rod of the medium-pressure high-speed rotary joint proposed in this utility model.

[0017] Legend:

[0018] 1. Connector; 2. Rotating tube; 3. Support ring; 4. Fixing ring; 5. Connecting tube; 6. Bolt; 7. Inner tube; 8. Arc groove; 9. Arc block; 10. First support rod; 11. Second support rod; 12. Through groove; 13. Sleeve; 14. Through hole; 15. Positioning hole; 16. Slot; 17. Insert block; 18. Threaded groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Reference Figures 1 to 3The medium-pressure high-speed rotary joint provided by this utility model includes a joint 1, a rotating tube 2 rotatably connected to the end of the joint 1, an inner tube 7 rotatably connected to the inside of the joint 1, a connecting tube 5 threadedly connected to the end of the inner tube 7, a fixing ring 4 coaxially fixed to the outer edge of the rotating tube 2, a plurality of through holes 14 penetrating the outer edge of the fixing ring 4, a fixing member slidably connected to the through holes 14, the fixing member slidably penetrating the rotating tube 2, three equally spaced annularly distributed arc grooves 8 coaxially opened on the outer edge of the rotating tube 2, an arc block 9 slidably connected to the arc grooves 8, the arc block 9 fixedly connected to the support ring 3, a first spring is fixed between the inner wall of the arc groove 8 and the arc block 9 and inserted into the connecting tube 5, a support ring 3 is slidably sleeved on the outer edge of the rotating tube 2, an adjusting member is fixedly connected to the side of the fixing ring 4, the adjusting member slidably penetrating the fixing ring 4 and abutting against the fixing member;

[0021] The fastener includes a sleeve 13 that is slidably fitted into a through hole 14. Two guide grooves are symmetrically opened on the inner wall of the through hole 14. A guide block is slidably connected in the guide groove. The guide block is fixedly connected to the sleeve 13. A second spring is fixed between the top surface of the guide block and the top wall of the guide groove. An insert 17 is slidably connected in the sleeve 13. Two sliding grooves are symmetrically opened on the inner wall of the sleeve 13. A slider is slidably connected in the sliding groove. The slider is fixedly connected to the insert 17. A threaded groove 18 is coaxially opened on the top surface of the insert 17. A bolt 6 is threadedly connected in the threaded groove 18. The bolt 6 is rotatably connected to the top of the sleeve 13. Multiple positioning holes 15 are opened on the outer edge of the connecting tube 5. Multiple slots 16 are opened at the outer end of the inner tube 7. The insert 17 slides through the positioning hole 15 and is inserted into the slot 16. The adjusting member abuts against the outer edge of the sleeve 13. The end of the sleeve 13 is slidably inserted into the positioning hole 15.

[0022] The adjusting component includes three equidistant annular arrays of first support rods 10 distributed on the side of the support ring 3. The first support rods 10 are fixedly connected to the support ring 3. The upper oblique part of the first support rods 10 is attached to the second support rods 11. The inner wall of the through hole 14 passes through the through groove 12. The second support rods 11 slide through the through groove 12 and are fixedly connected to the sleeve 13. The first support rods 10 and the second support rods 11 are two obliquely symmetrical right-angled triangular rods. When the first support rods 10 and the second support rods 11 are combined, they form a complete rectangular frame rod.

[0023] By setting a linkage structure between sliding fasteners and adjusting components, multiple fasteners can be simultaneously disengaged from the connecting tube 5 by sliding the support ring 3 with only one hand, achieving rapid disassembly. Compared with the existing technology that requires two hands to operate a single self-tapping screw, this significantly improves disassembly and assembly efficiency, making it particularly suitable for frequent maintenance conditions. The insert 17 is inserted into the slot 16 of the inner tube 7 through the positioning hole 15 to form a rigid connection. Combined with the threaded connection of the connecting tube 5, it can withstand axial and radial loads under high pressure and high speed. The second spring continuously applies pressure to the sleeve 13 to ensure that the insert 17 and the slot 16 fit tightly, preventing loosening even under vibration conditions. This solves the problem of magnetic fastener failure due to temperature or magnetic attenuation. The arc-shaped block 9-arc groove 8 structure supported by the first spring gives the support ring 3 an automatic reset capability. After disassembly, it automatically springs back to the locking position to prevent accidental disengagement of the fasteners. The dual guide design of the guide groove and the slide groove ensures that the insert 17 is accurately aligned, avoiding skewed wear and extending its service life.

[0024] Working principle: When assembling the connecting pipe 5 and the connector 1, firstly rotate the support ring 3. The support ring 3 drives the first support rod 10 to rotate, and the first support rod 10 pushes the second support rod 11 upward. At the same time, the first spring is compressed. When the second support rod 11 pushes upward, it drives the sleeve 13 to move upward, so that the second spring is compressed and the end of the sleeve 13 is retracted into the through hole 14. Then, the connecting pipe 5 and the inner pipe 7 are threaded together. When the inner pipe 7 and the connecting pipe 5 are installed, the slot 16 outside the inner pipe 7 is aligned with the positioning hole 15 outside the connecting pipe 5. At the same time, the positioning hole 15 is aligned with the through hole 14. Then, the support ring 3 is released, and the first spring in the compressed state is reset. The first spring drives the support ring 3 to reset, and the second spring resets synchronously, so that the sleeve 13 moves downward, so that the sleeve 13 moves out of the through hole 14 and is inserted into the positioning hole 15. Then, the bolt 6 is rotated in sequence. The bolt 6 drives the insert block 17 to descend, so that the insert block 17 moves out of the sleeve 13 and is inserted into the slot 16.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A medium-pressure high-speed rotary joint, comprising a joint (1), characterized in that: The end of the connector (1) is rotatably connected to the rotating tube (2). The rotating tube (2) is provided with an inner tube (7). The inner tube (7) is rotatably connected to the inside of the connector (1). The end of the inner tube (7) is threadedly connected to a connecting tube (5). The outer edge of the rotating tube (2) is coaxially fixed with a fixing ring (4). The outer edge of the fixing ring (4) passes through multiple through holes (14). A fixing member is slidably connected in the through holes (14). The fixing member slides through the rotating tube (2) and is inserted into the connecting tube (5). The outer edge of the rotating tube (2) is slidably fitted with a support ring (3). The support ring (3) is located on one side of the fixing ring (4) and is fixedly connected to an adjusting member. The adjusting member slides through the fixing ring (4) and abuts against the fixing member.

2. The medium-pressure high-speed rotary joint according to claim 1, characterized in that: The outer edge of the rotating tube (2) has three equally spaced annularly distributed arc grooves (8), and an arc block (9) is slidably connected in the arc groove (8). The arc block (9) is fixedly connected to the support ring (3), and a first spring is fixed between the inner wall of the arc groove (8) and the arc block (9).

3. The medium-pressure high-speed rotary joint according to claim 1, characterized in that: The fixing component includes a sleeve (13) that is slidably fitted inside the through hole (14), a plug (17) that is slidably connected inside the sleeve (13), a threaded groove (18) that is coaxially opened on the top surface of the plug (17), a threaded bolt (6) that is threaded inside the threaded groove (18), the bolt (6) that is rotatably connected to the top end of the sleeve (13), a plurality of positioning holes (15) that are opened on the outer edge of the connecting tube (5), a plurality of slots (16) that are opened at the outer end of the inner tube (7), the plug (17) that is slidably passed through the positioning hole (15) and inserted into the slot (16), and the adjusting component that abuts against the outer edge of the sleeve (13).

4. The medium-pressure high-speed rotary joint according to claim 3, characterized in that: Two guide grooves are symmetrically opened on the inner wall of the through hole (14). A guide block is slidably connected in the guide groove. The guide block is fixedly connected to the sleeve (13). A second spring is fixed between the top surface of the guide block and the top wall of the guide groove.

5. The medium-pressure high-speed rotary joint according to claim 3, characterized in that: Two symmetrical grooves are opened on the inner wall of the sleeve (13), and a slider is slidably connected in the groove. The slider is fixedly connected to the insert (17).

6. The medium-pressure high-speed rotary joint according to claim 3, characterized in that: The adjusting component includes three equidistant annular arrays of first support rods (10) distributed on the side of the support ring (3). The first support rods (10) are fixedly connected to the support ring (3). The first support rods (10) are attached to the second support rods (11) at an angle above. The inner wall of the through hole (14) passes through the through groove (12). The second support rods (11) slide through the through groove (12) and are fixedly connected to the sleeve (13).

7. The medium-pressure high-speed rotary joint according to claim 6, characterized in that: The first support rod (10) and the second support rod (11) are two obliquely symmetrical right-angled triangular rods, and when the first support rod (10) and the second support rod (11) are combined, they form a complete rectangular frame rod.

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