Fluid connector with leak-proof structure

Abstract

The utility model discloses a fluid connector with a leakproof structure, which comprises a first joint and a second joint, and one end of the first joint and one end of the second joint are respectively provided with a pipeline; the anti-leakage assembly is arranged in the first connector and the second connector, the anti-leakage assembly comprises a telescopic assembly, the telescopic assembly is arranged in the middle of the interior of the first connector, a piston is arranged below the telescopic assembly, and a sealing opening matched with the piston is formed in the lower end of an inner cavity of the first connector; the anti-leakage assembly further comprises an upper fixing base which is arranged at the upper end of an inner cavity of the second connector, a supporting rod is fixedly arranged at the center of the upper end of the upper fixing base, a supporting block is fixedly arranged at one end of the supporting rod, and when the first connector and the second connector are connected, the supporting block enables the piston to be separated from the sealing opening. The problem of medium leakage after the pipeline and the fluid connector are detached is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid connectors, in particular to a fluid connector with an anti-leakage structure. Background Art

[0002] A fluid connector is a connector that can connect or disconnect a liquid path without the need for tools. It is mainly used for quick connection and disconnection between components in a liquid cooling system loop and is a very important component in a liquid cooling system. In addition, fluid connectors can also be used to connect pipelines that transport high-pressure production fluids to ensure relative movement between the two components at the corresponding connection ends of the pipeline. Fluid connectors have multiple functions and advantages. They can transfer fluids to different locations, components or systems to achieve the transmission of fluid media.

[0003] For example, the Chinese authorized patent "A Fluid Connector" with announcement number CN212509894U includes: a socket, a plug threadedly connected to the socket; a conical locking ring is provided on the outer ring of the plug located inside the socket; a hollow cone suitable for pressing against the conical locking ring is provided on the socket; as the plug is gradually screwed into the socket, the hollow cone is pressed against the conical locking ring to fix and seal the rear end of the socket with the front end of the plug. As the plug of this fluid connector is gradually screwed into the socket, the pressure applied by the hollow cone to the conical locking ring becomes greater and greater, making the socket and the plug fit more tightly and firmly.

[0004] Although the above-mentioned prior art is applied to the connection of high-pressure fluid pipelines, when the fluid connector is separated from the pipeline, although the delivery of the medium in the pipe body is cut off by the valve, some medium still remains at the end of the pipeline. After the fluid connector is disassembled, there is a problem of medium leakage. Therefore, it does not meet the existing needs. In this regard, we propose a fluid connector with a leakage-proof structure. Utility Model Content

[0005] The utility model aims to provide a fluid connector with an anti-leakage structure to solve the problem of medium leakage after the pipeline and the fluid connector are disassembled in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a fluid connector with an anti-leakage structure, comprising a first joint and a second joint, wherein one end of the first joint and the second joint are respectively provided with a pipeline; and further comprising:

[0007] An anti-leakage component is arranged inside the first joint and the second joint, and the anti-leakage component includes a telescopic component, which is arranged at a middle position inside the first joint, and a connecting plate fixed to the inner wall of the first joint is arranged around the first joint, a piston is arranged below the telescopic component, and a sealing port adapted to the piston is arranged at the lower end of the inner cavity of the first joint;

[0008] The anti-leakage component also includes an upper fixed seat, which is arranged at the upper end of the inner cavity of the second joint. A support rod is fixedly provided at the center position of the upper end of the upper fixed seat. A support block is fixedly provided at one end of the support rod. When the first joint and the second joint are connected, the support block separates the piston from the sealing port. The outer ring inside the upper fixed seat is provided with a plurality of annularly distributed guide holes.

[0009] Preferably, a thread groove is provided in the inner wall of the other end of the first joint, and a fixing nut is fixedly provided at the other end of the second joint, and the fixing nut is threadably matched with the thread groove. Flanges are welded and fixed at the connection between the first joint and the second joint, and the two flanges are fixed by fastening bolts.

[0010] Preferably, movable nuts are installed on the outside of the first joint and the second joint, and the movable nuts are slidingly connected to the first joint and the second joint respectively, a threaded ring matching the movable nut is provided on the outer wall of the pipe, a limiting ring is fixedly provided on one end of the outside of the first joint and the second joint, a support spring is fixedly installed on one end of the limiting ring, and a sliding fit is formed when the connecting seat on the upper end surface of the support spring contacts the movable nut.

[0011] Preferably, a sealing rubber ring is disposed on the outside of one end of the first joint and the second joint, and one side of the sealing rubber ring is engaged and adhered to the limiting groove of the outer wall of the first joint and the second joint.

[0012] Preferably, a pressure relief mechanism is provided inside the second joint, and the pressure relief mechanism includes a lower fixed seat, a conical column is fixedly provided at the middle position of the upper end surface of the lower fixed seat, a buffer spring is fixedly installed outside the conical column, a movable block slidably connected to the inner wall of the second joint is provided above the conical column, and the upper end surface of the buffer spring is in contact with the bottom of the movable block, and an adjustment hole is provided at the middle position of the movable block.

[0013] Preferably, the diameter of the lower end of the cone column is larger than the adjustment hole, and the diameter of the upper end is smaller than the adjustment hole.

[0014] Preferably, the telescopic assembly includes a fixed cylinder and a movable rod, one end of the movable rod is located inside the fixed cylinder and movably connected thereto, the lower end of the movable rod is fixed to the piston, and a fixed cylinder and a return spring are fixedly installed between the fixed cylinder and the movable rod.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model designs the fluid connector into two parts, the first joint is installed on one pipe, and the second joint is installed on another pipe. The first joint and the second joint are threadedly connected in the installation mode. The fixing nut is aligned with the thread groove and pressed and rotated to fix the first joint and the second joint. Then, the overlapping flanges are fixed with the fastening bolts to ensure the firmness and sealing of the two joints. During the installation process, the support block squeezes and moves the piston inside the first joint upward, so that it loses the closure of the sealing port, so that the first joint and the second joint form a passage, which is convenient for the subsequent fluid delivery. Then, during the disassembly process, the two joints can be relatively rotated by removing the fastening bolts. As one of the joints rotates, the fixing nut gradually withdraws from the thread groove. Under the elastic support of the reset spring, the piston is also moved toward the sealing port. During the movement, the residual fluid is squeezed to move it above the piston. When the piston contacts the sealing port, there is no medium remaining in the passage between the first joint and the second joint. At the same time, the fixing nut has not completely withdrawn from the thread groove, ensuring the sealing of the two joints during the disassembly process, and further improving the overall anti-leakage effect.

[0017] 2. The utility model adopts a method of first plugging and then thread reinforcement in the connection between the joint and the pipeline. By aligning one end of the joint with the pipeline and inserting it inward, the sealing rubber ring is squeezed during the insertion process, so that it is close to the inner wall of the pipeline, thereby ensuring the sealing of the connection between the two. Then, the movable nut is moved to the pipeline position and spirally installed to fix the movable nut on the thread of the outer wall of the pipeline, thereby ensuring the stable connection between the joint and the pipeline. The installation structure is convenient and easy to operate, and both firmness and sealing can be guaranteed.

[0018] 3. The utility model is provided with a pressure relief mechanism. After the fluid connector and the pipeline are installed, the valve is opened to transport the fluid. Due to the relatively large pressure generated instantly, the movable block is impacted after entering the second joint, causing it to continuously move downward, thereby reducing the space between the regulating hole and the cone column, thereby reducing the amount of high-pressure fluid passing through, achieving the purpose of buffering, and preventing the high-pressure fluid from instantly rushing into the connected pipeline and causing damage. As the pressure decreases, the movable block is reset under the action of the buffer spring. At this time, a relatively large gap is maintained between the regulating hole and the cone column to ensure smooth fluid transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the fluid connector and pipeline connection structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the first joint of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the second joint of the utility model;

[0022] Figure 4 For the utility model Figure 1 A partial enlarged view of area A.

[0023] In the figure: 1. first joint; 2. second joint; 3. pipeline; 4. movable nut; 5. sealing rubber ring; 6. telescopic assembly; 7. reset spring; 8. piston; 9. sealing port; 10. flange; 11. upper fixed seat; 12. guide hole; 13. support rod; 14. support block; 15. lower fixed seat; 16. cone column; 17. buffer spring; 19. movable block; 20. adjustment hole; 21. threaded groove; 22. fixed nut; 23. limit ring; 24. support spring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figure 1-4 The utility model provides an embodiment: a fluid connector with a leak-proof structure, comprising a first joint 1 and a second joint 2, wherein one end of the first joint 1 and the second joint 2 are respectively provided with a pipe 3; and further comprising:

[0026] The anti-leakage component is arranged inside the first joint 1 and the second joint 2, and the anti-leakage component includes a telescopic component 6, which is arranged at the middle position inside the first joint 1, and the first joint 1 is surrounded by connecting plates fixed to the inner wall of the first joint 1, a piston 8 is arranged below the telescopic component 6, and a sealing port 9 adapted to the piston 8 is arranged at the lower end of the inner cavity of the first joint 1;

[0027] The anti-leakage component also includes an upper fixed seat 11, which is arranged at the upper end of the inner cavity of the second joint 2. A support rod 13 is fixedly provided at the center position of the upper end of the upper fixed seat 11, and a support block 14 is fixedly provided at one end of the support rod 13. When the first joint 1 and the second joint 2 are connected, the support block 14 separates the piston 8 from the sealing port 9. The outer ring inside the upper fixed seat 11 is provided with a plurality of annularly distributed guide holes 12.

[0028] When in use, the first joint 1 is installed on one pipe 3, and the second joint 2 is installed on the other pipe 3. The first joint 1 and the second joint 2 are installed in a threaded connection. The first joint 1 and the second joint 2 can be fixed by aligning the fixing nut 22 with the thread groove 21 and pressing and rotating. Then, the overlapping flanges 10 are fixed with fastening bolts to ensure the firmness and sealing of the two joints. During the installation process, the support block 14 squeezes and moves the piston 8 inside the first joint 1 upward, causing it to lose the closure of the sealing port 9, so that the first joint 1 and the second joint 2 form a passage. For the subsequent fluid delivery, during the disassembly process, the two joints can be relatively rotated by removing the fastening bolts. As one of the joints rotates, the fixing nut 22 gradually withdraws from the thread groove 21. Under the elastic support of the return spring 7, the piston 8 is also moved toward the sealing port 9. During the movement, the remaining fluid is squeezed to move to the top of the piston 8. When the piston 8 contacts the sealing port 9, there is no medium remaining in the passage between the first joint 1 and the second joint 2. At the same time, the fixing nut 22 has not completely withdrawn from the thread groove 21, ensuring the sealing of the two joints during the disassembly process.

[0029] See also Figure 1 , Figure 2 and Figure 3 A thread groove 21 is provided in the inner wall of the other end of the first joint 1, and a fixing nut 22 is fixedly provided at the other end of the second joint 2, and the fixing nut 22 is threadedly matched with the thread groove 21. A flange 10 is welded and fixed at the connection between the first joint 1 and the second joint 2, and the two flanges 10 are fixed by fastening bolts to achieve a firm connection between the first joint 1 and the second joint 2.

[0030] See also Figure 4 The first joint 1 and the second joint 2 are both installed with movable nuts 4 on the outside, and the movable nuts 4 are respectively slidably connected with the first joint 1 and the second joint 2. A threaded ring compatible with the movable nut 4 is provided on the outer wall of the pipe 3. A limiting ring 23 is fixedly provided at one end of the outside of the first joint 1 and the second joint 2. A supporting spring 24 is fixedly installed at one end of the limiting ring 23, and a sliding fit is formed when the connecting seat on the upper end surface of the supporting spring 24 contacts the movable nut 4, so that the first joint 1 and the second joint 2 are respectively connected to the pipe 3. The threaded installation method will not cause horizontal displacement between the joint and the pipe 3.

[0031] See also Figure 4 , Figure 2 and Figure 3 A sealing rubber ring 5 is provided on the outside of one end of the first joint 1 and the second joint 2. One side of the sealing rubber ring 5 is clamped and adhered to the limiting groove on the outer wall of the first joint 1 and the second joint 2. The sealing rubber ring 5 is close to the inner wall of the pipe 3, thereby ensuring the sealing of the connection between the two.

[0032] See also Figure 1 and Figure 3 A pressure relief mechanism is provided inside the second joint 2, and the pressure relief mechanism includes a lower fixed seat 15, a cone column 16 is fixedly provided at the middle position of the upper end surface of the lower fixed seat 15, and a buffer spring 17 is fixedly installed outside the cone column 16. A movable block 19 is provided above the cone column 16 and is slidably connected to the inner wall of the second joint 2, and the upper end surface of the buffer spring 17 is in contact with the bottom of the movable block 19. An adjusting hole 20 is provided at the middle position of the movable block 19. When the fluid connector and the pipeline 3 are installed, the valve is opened to transport the fluid. Due to the high pressure generated instantly, the movable block 19 is impacted after entering the second joint 2, so that it moves continuously downward, so that the space between the adjusting hole 20 and the cone column 16 is reduced, thereby reducing the amount of high-pressure fluid passing through, achieving the purpose of buffering, and preventing the high-pressure fluid from instantly rushing into the connected pipeline and causing damage. As the pressure decreases, the movable block 19 is reset under the action of the buffer spring 17. At this time, a large gap is maintained between the adjusting hole 20 and the cone column 16 to ensure smooth fluid transportation.

[0033] See also Figure 3 The diameter of the lower end of the cone column 16 is larger than the adjustment hole 20, and the diameter of the upper end is smaller than the adjustment hole 20.

[0034] Furthermore, the telescopic assembly 6 includes a fixed cylinder and a movable rod, one end of the movable rod is located inside the fixed cylinder and movably connected thereto, the lower end of the movable rod is fixed to the piston 8, and a fixed cylinder and a return spring 7 are fixedly installed between the fixed cylinder and the movable rod.

[0035] Working principle: When in use, align one end of the connector with the pipe 3 and insert it inward. During the insertion process, the sealing rubber ring 5 is squeezed so that it fits tightly against the inner wall of the pipe 3, thereby ensuring the sealing of the connection between the two. Then move the movable nut 4 to the pipe position and screw it on to fix it on the thread of the outer wall of the pipe 3, thereby ensuring the stability of the connection between the connector and the pipe 3.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A fluid connector with a leak-proof structure, comprising a first joint (1) and a second joint (2), wherein one end of the first joint (1) and the second joint (2) are respectively provided with a pipe (3); Features: Also includes: An anti-leakage component, which is arranged inside the first joint (1) and the second joint (2), the anti-leakage component comprising a telescopic component (6), which is arranged at a middle position inside the first joint (1), and the first joint (1) is provided with connecting plates fixed to the inner wall of the first joint (1) around the periphery, a piston (8) is provided below the telescopic component (6), and a sealing port (9) adapted to the piston (8) is provided at the lower end of the inner cavity of the first joint (1); The anti-leakage assembly further comprises an upper fixed seat (11), which is arranged at the upper end of the inner cavity of the second joint (2); a support rod (13) is fixedly provided at the center position of the upper end of the upper fixed seat (11); a support block (14) is fixedly provided at one end of the support rod (13); when the first joint (1) and the second joint (2) are connected, the support block (14) separates the piston (8) from the sealing port (9); and a plurality of annularly distributed flow guide holes (12) are provided on the outer ring inside the upper fixed seat (11).

2. A fluid connector with a leakage-proof structure according to claim 1, characterized in that: A thread groove (21) is provided in the inner wall of the other end of the first joint (1), a fixing nut (22) is fixedly provided at the other end of the second joint (2), and the fixing nut (22) is threadably matched with the thread groove (21), and a flange (10) is welded and fixed at the connection between the first joint (1) and the second joint (2), and the two flanges (10) are fixed by fastening bolts.

3. The fluid connector with a leakage-proof structure according to claim 1, characterized in that: The first joint (1) and the second joint (2) are both externally mounted with movable nuts (4), and the movable nuts (4) are respectively slidably connected to the first joint (1) and the second joint (2); a threaded ring matching the movable nut (4) is provided on the outer wall of the pipe (3); a limiting ring (23) is fixedly provided at one end of the first joint (1) and the second joint (2); a supporting spring (24) is fixedly installed at one end of the limiting ring (23); and a connecting seat on the upper end surface of the supporting spring (24) forms a sliding fit with the movable nut (4) when in contact.

4. The fluid connector with a leakage-proof structure according to claim 1, characterized in that: A sealing rubber ring (5) is provided on the outside of one end of the first joint (1) and the second joint (2), and one side of the sealing rubber ring (5) is engaged and adhered to a limiting groove on the outer wall of the first joint (1) and the second joint (2).

5. The fluid connector with a leakage-proof structure according to claim 1, characterized in that: A pressure relief mechanism is provided inside the second joint (2), the pressure relief mechanism comprising a lower fixed seat (15), a cone column (16) fixedly provided at the middle position of the upper end surface of the lower fixed seat (15), a buffer spring (17) fixedly installed outside the cone column (16), a movable block (19) slidably connected to the inner wall of the second joint (2) is provided above the cone column (16), the upper end surface of the buffer spring (17) is in contact with the bottom of the movable block (19), and an adjustment hole (20) is provided at the middle position of the movable block (19).

6. The fluid connector with a leakage-proof structure according to claim 5, characterized in that: The diameter of the lower end of the cone column (16) is larger than the adjustment hole (20), and the diameter of the upper end is smaller than the adjustment hole (20).

7. The fluid connector with a leakage-proof structure according to claim 1, characterized in that: The telescopic assembly (6) comprises a fixed cylinder and a movable rod, one end of the movable rod is located inside the fixed cylinder and is movably connected thereto, the lower end of the movable rod is fixed to a piston (8), and a fixed cylinder and a return spring (7) are fixedly installed between the fixed cylinder and the movable rod.

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