Microfluidic airway interface with high leakproofness and leakproof structure

Abstract

The utility model relates to the technical field of microfluidics, and discloses a microfluidics airway interface with high sealing performance and a leakproof structure, which comprises a pipeline, a fixed column is rotatably connected to one side of the interior of the pipeline, limiting blocks are fixedly connected to the periphery of the outer side of the fixed column, a fixed ring is fixedly connected to the interior of the fixed column, and the limiting blocks are fixedly connected to the limiting blocks. A plurality of springs are fixedly connected to one side of the fixing ring, sealing rings are slidably connected to the sides, away from the fixing ring, of the springs, limiting rings are slidably connected to the sides, away from the springs, of the sealing rings, and connecting columns are fixedly connected to the outer sides of the limiting rings; the outer side of the pipeline is fixedly connected with a control assembly used for controlling parts. By means of the structural design, connection operation of pipelines is easy, convenient and rapid, a worker only needs to insert the fixing column into the connecting column, butt joint can be completed by means of cooperation of all the components, and complex tools or tedious operation steps are not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of microfluidic airway technology, in particular to a microfluidic airway interface with a high sealing and anti-leakage structure. Background Art

[0002] Microfluidic airway interfaces with high sealing and leak-proof structures have important applications in many fields such as biomedicine, chemical analysis, food testing, scientific research and teaching. They can ensure the accuracy, stability and safety of gas control, and help carry out related work in various fields with high quality.

[0003] Microfluidic airway interfaces with high sealing and leak-proof structures are usually composed of connecting components, sealing components, adjustment and control components, auxiliary fixing and guiding components and other structures. Microfluidic airway interfaces with high sealing and leak-proof structures rely on the connection and sealing, flow and pressure adjustment, feedback and control principles, and the coordinated cooperation of various components to ensure that gas transmission parameters are accurate and stable to adapt to various application scenarios.

[0004] The existing parts have high sealing and leak-proof structures but cannot achieve the docking of pipes without tools. In many practical application scenarios, such as frequent microfluidic experiments in the laboratory, it is necessary to frequently replace different pipes or adjust the airway layout. If tools must be used every time the pipes are docked, the operation process will become cumbersome, increasing the preparation and operation time, resulting in a significant reduction in overall work efficiency. Therefore, a microfluidic airway interface with high sealing and leak-proof structure is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above deficiencies, the present invention provides a microfluidic airway interface with high sealing and leak-proof structure, aiming to improve the problem in the prior art that pipelines cannot be quickly connected without tools.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A microfluidic airway interface with a highly sealing and leak-proof structure includes a pipe, a fixed column rotatably connected to one side of the interior of the pipe, a limiting block fixedly connected to all four sides of the outside of the fixed column, a fixed ring fixedly connected to the interior of the fixed column, a plurality of springs fixedly connected to one side of the fixed ring, a sealing ring slidably connected to the side of the plurality of springs away from the fixed ring, a limiting ring slidably connected to the side of the sealing ring away from the springs, a connecting column fixedly connected to the outside of the limiting ring, and a control assembly for controlling parts fixedly connected to the outside of the pipe;

[0008] As a further description of the above technical solution:

[0009] The control assembly includes a limiting frame, the inner side of the limiting frame is fixedly connected to the outer side of the pipe, the inner side of the limiting frame is fixedly connected to a cylinder, the driving end of the cylinder is fixedly connected to a sliding block, the inner side of the sliding block is rotatably connected to a driving rod 1, the inner side of the driving rod 1 is fixedly connected to a connecting rod, and the outer side of the connecting rod is fixedly connected to a rotating plate 1;

[0010] As a further description of the above technical solution:

[0011] The interior of the sliding block is rotatably connected to a second driving rod, and the outer side of the second driving rod is fixedly connected to a hollow column;

[0012] As a further description of the above technical solution:

[0013] A second rotating plate is fixedly connected to the outer side of the hollow column, and the second rotating plate is rotatably connected to the inside of the pipe;

[0014] As a further description of the above technical solution:

[0015] The outer side of the sliding block is slidably connected to the inside of the limiting frame, and a cross-shaped sliding groove is provided inside the sliding block;

[0016] As a further description of the above technical solution:

[0017] A plurality of slots are provided inside the connecting column, and the outer side of the limiting block is slidably connected to the inside of the slots;

[0018] As a further description of the above technical solution:

[0019] The outer side of the fixing column is slidably connected to the inner side of the connecting column, and the clamping groove is configured in an L-shape;

[0020] As a further description of the above technical solution:

[0021] One side of the connecting column is coupled to the outer side of the pipeline, and the outer side of the connecting rod is rotatably connected to the inside of the pipeline.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the present invention, the fixing column cooperates with the limiting block, the limiting block cooperates with the card groove inside the connecting column, and the limiting ring squeezes the sealing ring, thereby realizing rapid docking of the pipeline and sealing at the same time. This structural design makes the connection operation of the pipeline simple and fast. The staff only needs to insert the fixing column into the connecting column and rely on the cooperation of various components to complete the docking without the need for complicated tools or tedious operating steps.

[0024] 2. In the present invention, the cylinder is started to drive the sliding block, the sliding block drives the driving rod 1 and the driving rod 2, the driving rod 1 drives the connecting rod, the connecting rod drives the rotating plate 1, and the driving rod 2 drives the hollow column, and the hollow column drives the rotating plate 2, thereby realizing the control of the flow rate inside the pipeline. Once the flow rate is set to the desired value by adjusting each component, as long as the cylinder and the entire transmission device maintain a stable working state, the stable flow rate of the fluid in the pipeline can be continuously maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional schematic diagram of the microfluidic airway interface with high sealing and anti-leakage structure proposed by the present invention;

[0026] Figure 2 This is a schematic structural diagram of the sealing ring of the microfluidic airway interface with high sealing and anti-leakage structure proposed by the present invention;

[0027] Figure 3 This is a schematic structural diagram of the fixing ring of the microfluidic airway interface with high sealing and anti-leakage structure proposed by the present invention;

[0028] Figure 4 This is a structural schematic diagram of the rotating plate 2 of the microfluidic airway interface with high sealing and anti-leakage structure proposed by the present invention.

[0029] Legend:

[0030] 1. Pipe; 2. Fixed column; 3. Limiting block; 4. Fixed ring; 5. Spring; 6. Sealing ring; 7. Connecting column; 8. Limiting ring; 9. Limiting frame; 10. Cylinder; 11. Sliding block; 12. Driving rod 1; 13. Connecting rod; 14. Rotating plate 1; 15. Driving rod 2; 16. Hollow column; 17. Rotating plate 2. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1 、 Figure 3The utility model provides an embodiment: a microfluidic airway interface with high sealing and leak-proof structure, including a pipeline 1, which is made of polytetrafluoroethylene material. This material has stable chemical properties and strong corrosion resistance. It can adapt to a variety of different gas or liquid transmission environments, ensuring the structural integrity of the pipeline 1 during long-term use and ensuring the stability of fluid transmission.

[0033] A fixed post 2 is pivotally connected to one side of the interior of pipe 1. Made of stainless steel, this post possesses excellent strength and hardness, resisting deformation and providing stable support for the entire connection structure, enabling reliable subsequent connection operations and ensuring the durability of pipe 1. Restricting blocks 3 are fixedly connected to the outer periphery of the fixed post 2. These restricting blocks, made of hard alloy and resistant to wear, maintain their shape and performance even during frequent plugging and unplugging operations. They precisely engage the slots, effectively preventing the fixed post 2 from accidentally dislodging from the connecting post 7 and enhancing the stability of the connection.

[0034] Fixedly attached to the interior of the fixing column 2 is a retaining ring 4, made of high-strength aluminum alloy. While lightweight, this ring can withstand the tensile force exerted by the springs 5, providing a stable mounting base for the springs 5 and ensuring the proper functioning of the entire elastic structure. Fixedly attached to one side of the retaining ring 4 are multiple springs 5, wound from highly elastic stainless steel wire. These springs exhibit excellent resilience, maintaining their original performance after repeated compression and rebound. This component provides a stable and long-lasting elastic force, ensuring consistent sealing and connection.

[0035] Each of the multiple springs 5 is connected to a sealing ring 6 on the side away from the retaining ring 4. Made of soft and elastic silicone rubber, this material fits snugly against the component. Under the elastic force of the springs 5, it fully fills the gaps in the connection, achieving an excellent seal and effectively preventing fluid leakage. A limiting ring 8 is slidably connected to the side of the sealing ring 6 away from the springs 5. Made of polycarbonate, this smooth surface not only guides the sliding movement of the sealing ring 6 but also closely cooperates with it to aid in sealing and limit the connection structure.

[0036] A connecting post 7 is fixedly connected to the outside of the limiting ring 8, one side of which is coupled to the outside of the pipe 1. The outside of the fixing post 2 slides inside the connecting post 7, with an L-shaped slot. The connecting post 7 has multiple slots inside, into which the outside of the limiting block 3 slides. A control assembly for controlling the components is fixedly connected to the outside of the pipe 1.

[0037] Reference Figure 2 、 Figure 4The control assembly includes a limiting frame 9, the inner side of which is fixedly connected to the outer side of the pipe 1. The limiting frame 9 is made of sturdy engineering plastic and has good structural stability. It can be firmly installed on the pipe 1, providing reliable support for internal components such as the cylinder 10, ensuring the normal operation of the entire control assembly. The cylinder 10 is fixedly connected to the interior of the limiting frame 9. The cylinder body of the cylinder 10 is made of high-quality aluminum alloy, which is lightweight and has good heat dissipation performance. The key components inside, such as the piston and piston rod, have been processed with high precision and wear-resistant treatment to ensure accurate movement during long-term reciprocating motion, providing a stable and reliable power source for subsequent flow rate control.

[0038] The driving end of the cylinder 10 is fixedly connected to a sliding block 11. The sliding block 11 is made of wear-resistant nylon material with a smooth surface. When sliding inside the limiting frame 9, the friction is small and it can slide smoothly according to the drive of the cylinder 10, ensuring that the control signal is accurately and effectively transmitted to the relevant components, thereby achieving precise control of the flow rate. The outer side of the sliding block 11 is slidably connected to the inside of the limiting frame 9. The interior of the sliding block 11 is provided with a cross-shaped slide groove. The design of the cross-shaped slide groove allows the parts to be flexibly rotated in different directions when driven, and can accurately change its own position according to the sliding displacement of the sliding block 11, thereby accurately driving the corresponding rotating plate to adjust the angle, thereby achieving fine control of the flow rate of the fluid in the pipeline 1.

[0039] Sliding block 11 is internally rotatably connected to a second driving rod 15, which is fixedly connected to the outside of a hollow column 16. Made of high-strength alloy steel, this rod 15 possesses sufficient strength and toughness to resist deformation or breakage during power transmission, reliably transmitting the motion of sliding block 11 to hollow column 16, thereby driving a second rotating plate 17 for angle adjustment. Fixedly connected to the outside of hollow column 16 is a second rotating plate 17, which is rotatably connected to the inside of pipe 1. Made of wear-resistant stainless steel, this plate 17 features a smooth surface and high shape precision. As it rotates within pipe 1, it adheres closely to the inner wall of pipe 1, effectively changing the cross-sectional area through which fluid passes while preventing excessive wear and tear from prolonged use, which could affect flow rate control.

[0040] Sliding block 11 is internally rotatably connected to driving rod 12, which is internally fixedly connected to connecting rod 13. Driving rod 12 is also made of high-strength alloy steel to ensure reliable power transmission. It cooperates with driving rod 2 15 to accurately convert the movement of sliding block 11 into angular adjustment of rotating plate 14 and rotating plate 2 17. The outer side of connecting rod 13 is rotatably connected to the interior of pipe 1. Rotating plate 14 is fixedly connected to the outer side of connecting rod 13. Rotating plate 14 is made of the same stainless steel as rotating plate 2 17, ensuring excellent wear resistance and shape accuracy. By cooperating with rotating plate 2 17, the cross-sectional area of the fluid passing through pipe 1 is precisely controlled according to different angle adjustment conditions, thereby achieving the effect of controlling the flow rate.

[0041] Working principle: When the staff needs to connect the pipeline 1, they can prevent the connecting column 7 from being connected to the place where it needs to be connected, and then slide the fixed column 2 into the inside of the connecting column 7. The inside of the connecting column 7 is provided with a card slot, and the limiting block 3 can be clamped inside it. The inside of the fixed column 2 is connected to the fixing ring 4, and the other side of the fixing ring 4 is connected to multiple springs 5, and the other end of the spring 5 is connected to the sealing ring 6. The sealing ring 6 will compress the spring 5 inward due to contact with the limiting ring 8. At this time, when one side is relaxed, the rebound force of the spring 5 can be used to tightly clamp the limiting block 3 inside the card slot of the connecting column 7.

[0042] When it is necessary to control the flow rate inside the pipeline 1, the cylinder 10 can be started, and the cylinder 10 drives the sliding block 11 to control the driving rod 12 and the driving rod 2 15, and the driving rod 12 can drive the connecting rod 13, and the connecting rod 13 will drive the rotating plate 14, and the driving rod 2 15 will drive the hollow column 16, and the outer side of the hollow column 16 is connected to the rotating plate 2 17, which can be achieved by sliding the sliding block 11 inside the limiting frame 9 to control the rotating plate 14 and the rotating plate 2 17, and a cross-shaped slide groove is provided inside the sliding block 11, and the driving rod 12 and the driving rod 2 15 are respectively on one side of the cross. In this way, the angles of the rotating plate 2 17 and the rotating plate 14 can be adjusted by sliding the sliding block 11 up and down, thereby achieving the effect of controlling the flow rate.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A microfluidic airway interface with a high sealing and leak-proof structure, comprising a pipeline (1), characterized in that: A fixed column (2) is rotatably connected to one side of the interior of the pipe (1), and limiting blocks (3) are fixedly connected to the four sides of the outer side of the fixed column (2). A fixed ring (4) is fixedly connected to the interior of the fixed column (2), and a plurality of springs (5) are fixedly connected to one side of the fixed ring (4). The plurality of springs (5) are slidably connected to a sealing ring (6) on one side away from the fixed ring (4), and a limiting ring (8) is slidably connected to the one side of the sealing ring (6) away from the spring (5). A connecting column (7) is fixedly connected to the outer side of the limiting ring (8), and a control component for controlling parts is fixedly connected to the outer side of the pipe (1).

2. The microfluidic airway interface with high sealing and leak-proof structure according to claim 1, characterized in that: The control component includes a limiting frame (9), the inner side of the limiting frame (9) is fixedly connected to the outer side of the pipe (1), the inner side of the limiting frame (9) is fixedly connected to a cylinder (10), the driving end of the cylinder (10) is fixedly connected to a sliding block (11), the inner side of the sliding block (11) is rotatably connected to a driving rod (12), the inner side of the driving rod (12) is fixedly connected to a connecting rod (13), and the outer side of the connecting rod (13) is fixedly connected to a rotating plate (14).

3. The microfluidic airway interface with high sealing and leak-proof structure according to claim 2, characterized in that: The interior of the sliding block (11) is rotatably connected to a second driving rod (15), and the outer side of the second driving rod (15) is fixedly connected to a hollow column (16).

4. The microfluidic airway interface with high sealing and leak-proof structure according to claim 3, characterized in that: A second rotating plate (17) is fixedly connected to the outer side of the hollow column (16), and the second rotating plate (17) is rotatably connected to the inside of the pipe (1).

5. The microfluidic airway interface with high sealing and leak-proof structure according to claim 3, characterized in that: The outer side of the sliding block (11) is slidably connected to the inside of the limiting frame (9), and a cross-shaped sliding groove is provided inside the sliding block (11).

6. The microfluidic airway interface with high sealing and leak-proof structure according to claim 1, characterized in that: A plurality of slots are provided inside the connecting column (7), and the outer side of the limiting block (3) is slidably connected to the inside of the slots.

7. The microfluidic airway interface with high sealing and leak-proof structure according to claim 6, characterized in that: The outer side of the fixing column (2) is slidably connected to the inside of the connecting column (7), and the card slot is arranged in an L shape.

8. The microfluidic airway interface with high sealing and leak-proof structure according to claim 2, characterized in that: One side of the connecting column (7) is coupled to the outside of the pipe (1), and the outside of the connecting rod (13) is rotatably connected to the inside of the pipe (1).

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