Penetrating plate internal flow connector

Abstract

The utility model belongs to the technical field of microfluidics, and particularly relates to a through-plate internal flow connector which comprises a fixing assembly, and a first nut sealing ring and a second nut sealing ring are detachably installed in the fixing assembly. According to the fixing assembly, the sample inlet and outlet hole penetrating through the micro-fluidic chip and the two sealing rings are stressed at the same time and tightly pressed with the edge planes of the sample inlet and outlet hole respectively, so that high fluid pressure is tolerated, an external connector is arranged on the fixing assembly, after the fixing assembly is connected with an external pipeline, fluid can flow in the connector, and the fluid can flow out of the connector from the outside of the connector. The device is directly communicated with a sample inlet and outlet hole of the micro-fluidic chip, so that the functions of fluid communication and difficulty in leakage are realized.

Description

Technical Field

[0001] This utility model belongs to the field of microfluidics technology, specifically referring to a through-plate internal flow connector. Background Technology

[0002] With the rapid development of micro and nano technology, microfluidic chips, as an advanced platform for manipulating fluids in microscale space, are widely used in fields such as biomedical analysis, chemical synthesis, and drug screening. Microfluidic chips achieve efficient and precise control of fluids through precisely designed microchannel networks. However, the design of sample inlet and outlet ports for microfluidic chips still faces many challenges.

[0003] Traditionally, these interfaces mostly rely on custom fixtures for connection and sealing, which not only lacks versatility but also has high processing complexity, limiting the widespread application of chips. On the other hand, adhesive base connectors, as another common interface solution, simplify the connection process but are prone to glue leakage and unstable sealing performance, affecting the accuracy of experimental results. In addition, a few researchers have attempted to improve sealing by increasing the thickness of the flow channel plate and directly machining threaded interfaces on it. However, this not only significantly increases material consumption but also greatly increases manufacturing difficulty and process complexity, which is detrimental to the mass production and cost control of microfluidic chips. Summary of the Invention

[0004] To address the aforementioned problems, this utility model proposes a through-plate internal flow connector.

[0005] The technical solution adopted by this utility model is as follows: This utility model provides a through-plate internal flow connector, including a fixing component, wherein a nut sealing ring one and a nut sealing ring two can be detachably installed in the fixing component.

[0006] Furthermore, the fixing assembly includes a through-plate guide screw and a straight-through clamping nut. The through-plate guide screw is detachably mounted with the straight-through clamping nut. The through-plate guide screw includes an external hexagonal clamping baffle. The external hexagonal clamping baffle has a circular sealing ring groove. One side of the external hexagonal clamping baffle has a screw post. The screw post has a coaxial guide hole. The inner side wall of the screw post has a horizontal guide hole. One end of the coaxial guide hole is connected to the horizontal guide hole. One end of the straight-through clamping nut has a circular sealing ring groove. One side of the straight-through clamping nut has a clamping threaded hole. One end of the clamping threaded hole is connected to one end of a connecting hole. The other end of the connecting hole is connected to one end of an external threaded hole. The external threaded hole is located inside the straight-through clamping nut.

[0007] Furthermore, the second nut sealing ring is detachably installed in the first annular sealing ring groove, and the first nut sealing ring is detachably installed in the fourth annular sealing ring groove.

[0008] Furthermore, the fixing assembly includes a through-plate guide screw four and a straight-through clamping nut two. The through-plate guide screw four is detachably mounted with the straight-through clamping nut two. The through-plate guide screw four includes an external hexagonal clamping baffle. One side of the external hexagonal clamping baffle is provided with a circular sealing ring groove. One end of the external hexagonal clamping baffle is provided with a screw post. The screw post is provided with a coaxial guide hole four inside. The inner side wall of the screw post is provided with a horizontal guide hole. One end of the coaxial guide hole four is connected to the horizontal guide hole. The straight-through clamping nut two is provided with a clamping threaded hole two inside. One end of the straight-through clamping nut two is provided with a circular sealing ring groove five. One end of the clamping threaded hole two is provided with a tower-shaped insertion pipe.

[0009] Furthermore, a second nut-sealing ring is detachably provided in the groove of the circular sealing ring, and a first nut-sealing ring is detachably provided in the groove of the circular sealing ring.

[0010] Furthermore, the fixing assembly includes a through-plate guide screw two and a straight-through clamping nut three, with the straight-through clamping nut three detachably mounted on the through-plate guide screw two; the through-plate guide screw two includes an external hexagonal clamping baffle two, one end of which is provided with a tower-shaped tube, and the other side of which is provided with a screw post two; a circular sealing ring groove two is opened on one side of the external hexagonal clamping baffle two, and the screw post two, the external hexagonal clamping baffle two, and the tower-shaped tube are provided with The second coaxial guide hole is provided on the inner wall of the second screw post. The second coaxial guide hole is connected to the second horizontal guide hole. The third straight-through clamping nut is provided on one side of the inside. The third clamping threaded hole is connected to one end of the second connecting hole. The other end of the second connecting hole is connected to one end of the third external threaded hole. The third external threaded hole is located inside the third straight-through clamping nut. The third straight-through clamping nut is provided with a circular sealing ring groove.

[0011] Furthermore, a second nut sealing ring is detachably provided in the groove of the second annular sealing ring, and a first nut sealing ring is detachably provided in the groove of the sixth annular sealing ring.

[0012] Furthermore, the fixing assembly includes a through-plate guide screw three and a straight-through clamping nut four. The through-plate guide screw three is detachably provided with the straight-through clamping nut four. The through-plate guide screw three has an external threaded hole one inside. One end of the through-plate guide screw three has a screw post three. One end of the external threaded hole one is connected to one end of the coaxial guide hole three. The inner side wall of the screw post three is connected to the horizontal guide hole three. The horizontal guide hole three and the coaxial guide hole three are connected in a continuous manner. The straight-through clamping nut four has a clamping threaded hole four inside. One end of the clamping threaded hole four is connected to one end of the straight-through clamping nut one nut sealing ring two. The other end of the straight-through clamping nut one nut sealing ring two is connected to one end of the external threaded hole four. The external threaded hole four is located inside the straight-through clamping nut four.

[0013] Furthermore, a second nut-sealing ring is detachably provided in the groove three of the annular sealing ring, and a first nut-sealing ring is detachably provided in the coaxial guide hole four.

[0014] The beneficial effects of this utility model by adopting the above structure are as follows:

[0015] (1) The fixed component is designed with an internal flow channel, and the fluid flows in the direction of the guide; it can withstand high fluid pressure.

[0016] (2) The fixing component passes through the sample inlet and outlet holes of the microfluidic chip. The two sealing rings are subjected to force at the same time and are pressed against the edge plane of the sample inlet and outlet holes respectively, so as to withstand high fluid pressure. The fixing component has an external interface. After connecting the external pipeline, the fluid can flow inside the connector, so that the fluid can directly communicate with the sample inlet and outlet holes of the microfluidic chip from the outside of the connector, thereby realizing the function of fluid communication and not easy leakage. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the first embodiment of the through-plate internal flow connector of this utility model;

[0019] Figure 2 This is a schematic diagram of the second embodiment of the through-plate internal flow connector of this utility model;

[0020] Figure 3 This is a schematic diagram of the third embodiment of the through-plate internal flow connector of this utility model;

[0021] Figure 4 This is a schematic diagram of the fourth embodiment of the through-plate internal flow connector of this utility model.

[0022] The components include: 1. Through-plate guide screw one; 2. Nut sealing ring one; 3. Nut sealing ring two; 4. Straight-through clamping nut one; 5. External hexagon clamping baffle one; 6. Circular sealing ring groove one; 7. Horizontal guide hole one; 8. Coaxial guide hole one; 9. Screw post one; 10. Screw post two; 11. External hexagon clamping baffle two; 12. Coaxial guide hole two; 13. Tower-shaped tube; 14. Circular sealing ring groove two; 15. Horizontal guide hole two; 16. Coaxial guide hole three; 17. Screw post three; 18. Horizontal guide hole three; 19. Circular sealing ring groove three; 20. External threaded hole one; 21. Connecting hole one; 22. Clamping threaded hole one; 23. Circular sealing ring groove four; 24. 25. External threaded hole 2; 26. Tower-shaped insert pipe; 27. Clamping threaded hole 2; 28. Circular sealing ring groove 5; 29. ​​Through-plate guide screw 2; 30. Through-plate guide screw 3; 31. Straight-through clamping nut 2; 32. Through-plate guide screw 4; 33. External hexagon clamping baffle; 34. Circular sealing ring groove; 35. Horizontal guide hole; 36. Coaxial guide hole 4; 37. Screw post; 38. Straight-through clamping nut 3; 39. Straight-through clamping nut 4; 40. Connecting hole 2; 41. Clamping threaded hole 3; 42. Circular sealing ring groove 6; 43. External threaded hole 3; 44. Connecting hole; 45. Clamping threaded hole 4; 46. Circular sealing ring groove 7; 47. External threaded hole 4. Detailed Implementation

[0023] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0024] Example 1

[0025] like Figure 1 As shown, this utility model proposes a through-plate internal flow connector, including a fixing component, in which a nut sealing ring 1 2 and a nut sealing ring 2 3 can be detachably installed.

[0026] The fixing assembly includes a through-plate guide screw 1 and a straight-through clamping nut 4. The through-plate guide screw 1 is detachably mounted with the straight-through clamping nut 4. The through-plate guide screw 1 includes an external hexagonal clamping baffle 5, which has a circular sealing ring groove 6 inside. One side of the external hexagonal clamping baffle 5 has a screw post 9, which has a coaxial guide hole 8 inside. The inner side wall of the screw post 9 has a horizontal guide hole 1. 7. One end of the coaxial guide hole 8 is connected to the horizontal guide hole 7; one end of the straight-through clamping nut 4 is provided with a circular sealing ring groove 4 23, and one side of the inside of the straight-through clamping nut 4 is provided with a clamping thread hole 22. One end of the clamping thread hole 22 is connected to one end of the connecting hole 21, and the other end of the connecting hole 21 is connected to one end of the external thread hole 24. The external thread hole 24 is located inside the straight-through clamping nut 4.

[0027] Nut seal ring 23 can be detachably installed in the annular seal ring groove 6, and nut seal ring 2 can be detachably installed in the annular seal ring groove 23.

[0028] In practical use, the through-plate flow guide screw 1 passes through the nut sealing ring 2 3, so that the nut sealing ring 2 3 is embedded in the annular sealing ring groove 6 of the through-plate flow guide screw 1. The nut sealing ring 2 is embedded in the annular sealing ring groove 4 23 at one end of the straight-through clamping nut 4. The threaded post portion of the through-plate flow guide screw 1, which is embedded in the nut sealing ring 2 3, passes through the sample inlet / outlet hole of the microfluidic chip, and then engages with the threaded hole portion of the straight-through clamping nut 4, which is embedded in the nut sealing ring 2, to tighten it, so that the nut sealing ring 2 3... The upper and lower planes of the microfluidic chip's sample inlet and outlet ports are tightly fitted with the nut and sealing ring 2, forming a connector with an internal flow channel. The other end of the straight-through clamping nut 4 provides an interface matching the external connector specifications, which is connected to the external pipeline interface, allowing the external pipeline fluid to communicate with the chip's sample inlet and outlet ports. The bolt tightening force compresses the nut and sealing ring 2 and the nut and sealing ring 3, thereby withstanding high fluid pressure. The above is the overall working process of this utility model. This step can be repeated for the next use.

[0029] Example 2

[0030] The difference between this embodiment and Embodiment 1 is: Figure 2As shown, the fixing assembly includes a through-plate guide screw 31 and a straight-through clamping nut 30. The through-plate guide screw 31 is detachably mounted with the straight-through clamping nut 30. The through-plate guide screw 31 includes an external hexagonal clamping baffle 32. One side of the external hexagonal clamping baffle 32 is provided with a circular sealing ring groove 33. One end of the external hexagonal clamping baffle 32 is provided with a screw post 36. The screw post 36 has a coaxial guide hole 35 inside. The inner side wall of the screw post 36 is provided with a horizontal guide hole 34. One end of the coaxial guide hole 35 is connected to the horizontal guide hole 34. The straight-through clamping nut 30 has a clamping threaded hole 26 inside. One end of the straight-through clamping nut 30 has a circular sealing ring groove 27. One end of the clamping threaded hole 26 is provided with a tower-shaped plug tube 25.

[0031] A second nut seal ring 3 is detachably provided in the groove 33 of the circular sealing ring, and a first nut seal ring 2 is detachably provided in the groove 27 of the circular sealing ring.

[0032] In practical use, the through-plate flow guide screw 4 31 passes through the nut sealing ring 2 3, so that the nut sealing ring 2 3 is embedded in the annular sealing ring groove 33 of the through-plate flow guide screw 4 31. The nut sealing ring 1 2 is embedded in the annular sealing ring groove 5 27 at one end of the straight-through compression nut 2 30. The threaded post part of the through-plate flow guide screw 4 31, which is embedded in the nut sealing ring 2 3, passes through the sample inlet / outlet hole of the microfluidic chip, and then engages with the threaded hole part of the straight-through compression nut 2 30, which is embedded in the nut sealing ring 1 2, to tighten it, thus sealing the nut. Ring 2 (3) and nut sealing ring 1 (2) fit tightly together. The upper and lower planes of the edge of the microfluidic chip's sample inlet / outlet hole form a connector with an internal flow channel. The other end of the straight-through compression nut 2 (30) provides an interface of matching external connector specifications, which connects to the external pipeline interface, allowing the external pipeline fluid to communicate with the chip's sample inlet / outlet. The bolt tightening force compresses nut sealing ring 2 (3) and nut sealing ring 1 (2), thereby withstanding high fluid pressure. This is the overall workflow of the present invention. This step can be repeated for the next use.

[0033] Example 3

[0034] The difference between this embodiment and Embodiment 1 is: Figure 3As shown, the fixing assembly includes a through-plate guide screw 28 and a straight-through clamping nut 37. The through-plate guide screw 28 is detachably mounted with the straight-through clamping nut 37. The through-plate guide screw 28 includes an external hexagonal clamping baffle 211. One end of the external hexagonal clamping baffle 211 is provided with a tower-shaped tube 13, and the other side of the external hexagonal clamping baffle 211 is provided with a screw post 210. A circular sealing ring groove 214 is opened on one side of the external hexagonal clamping baffle 211. The screw post 210, the external hexagonal clamping baffle 211, and the tower-shaped tube 13 are provided with the same A horizontal guide hole 15 is provided on the inner wall of the screw post 10, and the horizontal guide hole 15 is connected through the coaxial guide hole 12. A compression threaded hole 40 is provided on one side of the straight compression nut 37. One end of the compression threaded hole 40 is connected through to one end of the connecting hole 39, and the other end of the connecting hole 39 is connected through to one end of the external threaded hole 42. The external threaded hole 42 is located inside the straight compression nut 37. A circular sealing ring groove 41 is provided at one end of the straight compression nut 37.

[0035] A second nut sealing ring 3 is detachably provided in the groove 214 of the circular sealing ring, and a first nut sealing ring 2 is detachably provided in the groove 641 of the circular sealing ring.

[0036] In practical use, the through-plate flow guide screw 28 passes through the nut sealing ring 23, so that the nut sealing ring 23 is embedded in the annular sealing ring groove 214 of the through-plate flow guide screw 28. The nut sealing ring 12 is embedded in the annular sealing ring groove 641 at one end of the straight-through compression nut 37. The threaded post portion of the through-plate flow guide screw 28, which is embedded in the nut sealing ring 23, passes through the sample inlet / outlet hole of the microfluidic chip, and then engages with the threaded hole portion of the straight-through compression nut 37, which is embedded in the nut sealing ring 12, to tighten it, making the nut sealed. The sealing ring 2 (3) and the nut sealing ring 1 (2) are tightly fitted together. The upper and lower planes of the edge of the microfluidic chip's sample inlet and outlet holes form a connector with an internal flow guiding channel. The other end of the straight-through compression nut 3 (37) provides an interface of matching external connector specifications, which is connected to the external pipeline interface, so that the external pipeline fluid is connected to the chip's sample inlet and outlet ports. The bolt tightening force compresses the nut sealing ring 2 (3) and the nut sealing ring 1 (2), thereby withstanding high fluid pressure. The above is the overall working process of this invention. This step can be repeated for the next use.

[0037] Example 4

[0038] The difference between this embodiment and Embodiment 1 is: Figure 4As shown, the fixing assembly includes a through-plate guide screw 29 and a straight-through clamping nut 38. The through-plate guide screw 29 is detachably equipped with the straight-through clamping nut 38. The through-plate guide screw 29 has an external threaded hole 20 inside. One end of the through-plate guide screw 29 has a screw post 17. One end of the external threaded hole 20 is connected to one end of the coaxial guide hole 16. The inner side wall of the screw post 17 is connected to a horizontal guide hole 18. The horizontal guide hole 18 and the coaxial guide hole 16 are connected. The straight-through clamping nut 38 has a clamping threaded hole 44 on one side inside. One end of the clamping threaded hole 44 is connected to one end of the straight-through clamping nut 4 and the nut sealing ring 2 3. The other end of the straight-through clamping nut 4 and the nut sealing ring 2 3 is connected to one end of the external threaded hole 46. The external threaded hole 46 is located inside the straight-through clamping nut 38.

[0039] A nut seal ring 2 is detachably installed inside the groove 319 of the circular sealing ring, and a nut seal ring 1 is detachably installed inside the coaxial guide hole 35.

[0040] In practical use, the through-plate flow guide screw 29 passes through the nut sealing ring 23, so that the nut sealing ring 23 is embedded in the annular sealing ring groove 319 of the through-plate flow guide screw 29. The nut sealing ring 2 is embedded in the annular sealing ring groove 745 at one end of the straight-through compression nut 38. The threaded post portion of the through-plate flow guide screw 29, which is embedded in the nut sealing ring 23, passes through the sample inlet / outlet hole of the microfluidic chip, and then mates with the threaded hole portion of the straight-through compression nut 38, which is embedded in the nut sealing ring 2, to tighten it, making the nut sealed. The sealing ring 2 (3) and the nut sealing ring 2 (2) fit tightly together. The upper and lower planes of the edge of the microfluidic chip's sample inlet / outlet holes form a connector with an internal flow channel. The other end of the straight-through compression nut 38 provides an interface matching the external connector specifications, connecting to the external pipeline interface to allow the external pipeline fluid to communicate with the chip's sample inlet / outlet. The bolt tightening force compresses the nut sealing ring 2 (3) and the nut sealing ring 2 (2), thereby withstanding high fluid pressure. This is the overall workflow of the invention. This step can be repeated for the next use.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A through plate in-line fitting, characterized by: The utility model provides a fixed assembly, screw cap seal circle one (2) and screw cap seal circle two (3) can be detachably installed in the fixed assembly, the fixed assembly includes through plate flow guide screw one (1) and straight through compression screw cap one (4), straight through compression screw cap one (4) is detachably installed on through plate flow guide screw one (1), through plate flow guide screw one (1) includes outer hexagonal compression baffle one (5), the outer hexagonal compression baffle one (5) is equipped with circular ring seal circle recess one (6) in, one side of outer hexagonal compression baffle one (5) is equipped with screw post one (9), the screw post one (9) is equipped with coaxial flow guide hole one (8) in, the inner side wall of screw post one (9) is equipped with transverse flow guide hole one (7), one end of coaxial flow guide hole one (8) is connected through transverse flow guide hole one (7), one end of straight through compression screw cap one (4) is equipped with circular ring seal circle recess four (23), one side of the inside of straight through compression screw cap one (4) is equipped with compression screw thread hole one (22), one end of compression screw thread hole one (22) is connected through one end of communication hole one (21), the other end of communication hole one (21) is connected through one end of external thread hole two (24), external thread hole two (24) is located in straight through compression screw cap one (4) in, screw cap seal circle two (3) can be detachably installed in circular ring seal circle recess one (6), screw cap seal circle one (2) can be detachably installed in circular ring seal circle recess four (23).

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