A reaction tube for detection

Abstract

The utility model provides a kind of reaction tube for detection, it is related to detection test tube field, including first test tube (10), cover plate (20), sealing plug (30) and second test tube (40), sealing plug (30) fixedly arranged in the bottom surface of cover plate (20) and sealing plug (30) is coaxially arranged with cover plate (20), sealing plug (30) is set and sealing plug (30) outer wall is uniformly set multiple turns of sealing rubber ring (31) along its axial direction corresponding the inner ring of first test tube (10);Second test tube (40) is set in the middle of sealing plug (30);The size of cover plate (20) is greater than the size of the outer wall of first test tube (10).The reaction tube is designed by double-tube structure, under the premise of not opening cover, realizes the detection project that A solution reacts first, and the A solution after reaction mixes with B solution and reacts again, effectively avoids the problem such as environmental or reagent pollution caused by opening cover.

Description

Technical Field

[0001] This utility model relates to the field of test tube technology, specifically to a reaction tube for testing. Background Technology

[0002] Test tubes are common instruments in chemical laboratories, typically used as reaction containers for small amounts of reagents. Currently, test tubes are also required in medical testing and sample collection, storage, and testing processes in disease control centers. Chinese patent document CN213041803U discloses an auxiliary glass sleeve for chemical test tubes. By installing a glass outer sleeve on the outside of the test tube, it can protect the testing personnel, eliminating the need for direct contact between the personnel and the test tube. Furthermore, depending on the diameter of the test tube, different diameter circular holes can be replaced with limiting sleeves for vertical support, enabling the use of test tubes of different sizes. It features a simple structure and convenient operation. However, some specific testing procedures in CDC testing projects involve reacting one solution (e.g., solution A) first, then adding another solution (solution B) to mix, ultimately achieving the test calibration. During this testing process, when adding solution B after the reaction of solution A, the test tube needs to be opened. Opening the test tube cap easily exposes the reacted solution A to air, affecting the accuracy of the test results and potentially causing environmental or reagent contamination (especially for the detection of some infectious bacteria, which can lead to rapid bacterial spread). Currently, existing technologies typically use low-pressure, sterile environments for these tests, but the cost of establishing such environments is high, and it's impossible to perform corresponding tests on a single batch or single test tube (usually multiple batches of test tubes are tested simultaneously), resulting in low testing efficiency and long waiting times for results. Utility Model Content

[0003] To address the problems existing in the prior art, the purpose of this utility model is to provide a detection reaction tube. This reaction tube, through a dual-tube structure design, enables the detection of a test item where solution A reacts first, and then solution A is mixed with solution B for further reaction without opening the cap, effectively avoiding environmental or reagent contamination caused by opening the cap.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A reaction tube for testing includes a first test tube, a cover plate, a sealing plug, and a second test tube. The sealing plug is fixedly disposed on the bottom surface of the cover plate and is coaxially disposed with the cover plate. The sealing plug is disposed corresponding to the inner ring of the first test tube, and multiple sealing rubber rings are uniformly disposed on the outer wall of the sealing plug along its axial direction. The second test tube is disposed in the middle of the sealing plug. The size of the cover plate is larger than the outer wall size of the first test tube.

[0006] Based on further optimization of the above scheme, the outer diameter of the second test tube is no greater than one-half of the inner diameter of the first test tube.

[0007] Based on further optimization of the above scheme, a through hole is opened in the middle of the sealing plug and an internal thread is provided on the inner wall of the through hole. An external thread is provided on the outer wall of the top of the second test tube corresponding to the internal thread. The connection between the second test tube and the sealing plug is realized through the cooperation of the internal thread and the external thread.

[0008] Based on further optimization of the above scheme, a sealing rubber plug is provided on the bottom surface of the cover plate and in the inner ring of the through hole. The middle part of the sealing rubber plug protrudes downward and the protrusion corresponds to the inner diameter of the second test tube; the upper diameter of the sealing rubber plug is larger than the outer diameter of the second test tube.

[0009] Based on further optimization of the above scheme, a leakage hole is opened in the middle of the bottom surface of the second test tube, and the leakage hole is a through hole structure; a sealing plug is set at the leakage hole and a pull rod is fixedly set on the top surface of the sealing plug; the end of the pull rod away from the sealing plug passes through the sealing rubber plug and the cover plate in sequence; the outer wall of the end of the pull rod located on the upper side of the top surface of the cover plate is connected to the fastening nut by setting a connecting thread.

[0010] Based on further optimization of the above scheme, a positioning bracket is fixedly installed in the middle of the inner wall of the second test tube, and the pull rod passes through the positioning bracket and is slidably connected.

[0011] The following are the technical effects of this utility model:

[0012] This application's reaction tube uses a first test tube and a second test tube to hold solution A and solution B respectively, thereby ensuring that solution A reacts beforehand and avoiding detection failures caused by contact between solution A and solution B during the reaction. Subsequently, solution B is mixed with the reacted solution A without opening the cap, thus avoiding environmental or reagent contamination, low detection efficiency, and complex detection processes caused by opening the cap. Furthermore, the structure consisting of a first test tube, a cap, a sealing plug, and a second test tube facilitates the loading of solutions A and B, preventing mutual interference, and also facilitates the assembly and sealing of the entire structure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the reaction tube in an embodiment of the present invention.

[0014] Figure 2 This is an overall cross-sectional view of the reaction tube in an embodiment of this utility model.

[0015] Figure 3 for Figure 2 A sectional view along line AA.

[0016] Figure 4 This is a cross-sectional view of another embodiment of the reaction tube of this utility model.

[0017] Among them, 100 is solution A; 200 is solution B; 10 is the first test tube; 11 is the operating handle; 12 is the positioning clip; 20 is the cover plate; 21 is the sealing rubber stopper; 22 is the elastic clip; 30 is the sealing plug; 31 is the sealing rubber ring; 40 is the second test tube; 41 is the sealing plug; 42 is the pull rod; 43 is the positioning bracket; and 44 is the fastening nut. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example 1:

[0020] A reaction tube for detection includes a first test tube 10, a cover plate 20, a sealing plug 30, and a second test tube 40. The sealing plug 30 is fixedly disposed on the bottom surface of the cover plate 20 and is coaxially disposed with the cover plate 20 (e.g., Figure 1 As shown), the sealing plug 30 is arranged corresponding to the inner ring of the first test tube 10, and multiple sealing rubber rings 21 are evenly arranged along its axial direction on the outer wall of the sealing plug 30 (the sealing rubber rings 21 can be made of conventional rubber material, and their purpose is to achieve a seal at the opening of the first test tube 10); the second test tube 40 is arranged in the middle of the sealing plug 30, and the outer diameter of the second test tube 40 is not greater than half of the inner diameter of the first test tube 10 (e.g., Figure 2 As shown, the second test tube 40 and the first test tube 10 are aligned along the same central axis after installation; the size of the cover plate 20 is larger than the outer wall size of the first test tube 10 (e.g., Figure 2 As shown, the outer walls of the cover plate 20 all protrude from the outer wall of the first test tube 10.

[0021] The sealing plug 30 has a through hole in the middle and an internal thread on the inner wall of the through hole. The outer wall of the top of the second test tube 40 has an external thread corresponding to the internal thread (in combination). Figure 1 and Figure 2 As shown), the connection between the second test tube 40 and the sealing plug 30 is achieved through the engagement of internal and external threads. A sealing plug 21 (as shown) is installed on the bottom surface of the cover plate 20 and within the inner ring of the through hole. Figure 2 As shown, the sealing stopper 21 is made of rubber or silicone. The middle of the sealing stopper 21 protrudes downwards, and the protrusion corresponds to the inner diameter of the second test tube 40. The upper diameter of the sealing stopper 21 is larger than the outer diameter of the second test tube 40 (e.g., ...). Figure 2 As shown, this forms a seal on the opening of the second test tube 40.

[0022] A leakage hole is provided in the middle of the bottom surface of the second test tube 40. The leakage hole is a through hole structure; a sealing plug 41 is provided at the leakage hole (e.g., Figure 2As shown, the sealing plug 41 includes a sealing body and a sealing body. The sealing body is disposed on the bottom surface of the sealing body and is coaxially arranged with the sealing body. The sealing body matches the leakage hole, the diameter of the sealing body is larger than that of the sealing body, and the bottom surface of the sealing body matches the inner wall of the bottom of the second test tube 40, thereby completely sealing the leakage hole at the bottom of the second test tube 40 and preventing leakage. Both the sealing body and the sealing body are uniformly wrapped with a rubber layer. A pull rod 42 is fixedly installed on the top surface of the sealing plug 41. The end of the pull rod 42 away from the sealing plug 41 passes through the sealing rubber plug 21 and the cover plate 20 in sequence. (Due to the elasticity of the sealing rubber plug 21, it always makes sealing contact with the outer wall of the pull rod 42, thereby preventing leakage.) A through hole is opened in the middle of the cover plate 20 corresponding to the pull rod 42. Figure 1 As shown, a sealing ring is installed on the top surface of the cover plate 20 at the through hole to further prevent leakage; a positioning bracket 43 is fixedly installed in the middle of the inner wall of the second test tube 40, and the pull rod 42 passes through the positioning bracket 43 and is slidably connected (the positioning bracket 43 can be a Y-shaped bracket or a cross-shaped bracket, such as...). Figure 3 As shown, a Y-shaped bracket is used in this embodiment); the outer wall of the end of the pull rod 42 located on the upper side of the top surface of the cover plate 20 is connected to the fastening nut 44 by a connecting thread (in combination with...). Figure 1 and Figure 2 (As shown).

[0023] Working principle:

[0024] In use, first, push down the pull rod 42 to seal the leakage hole with the sealing plug 41. Then, pour solution B 200 into the second test tube 40, ensuring that solution B 200 does not leak from the bottom of the second test tube 40 (if solution B 200 leaks out, push down the sealing plug 41 again to make it fit perfectly with the second test tube 40; at the same time, the threaded connection between the sealing plug 41 and the leakage hole can also achieve the sealing of the leakage hole by the sealing plug 41). Then, let the upper end of the pull rod 42 pass through the sealing rubber plug 21 and the cover plate 20, ensuring that the upper end of the pull rod 42 protrudes from the end face of the cover plate 20. Then, rotate the cover plate 20 to screw the second test tube 40 and the sealing plug 30 together, thereby fixing the second test tube 40 at the bottom of the cover plate 20. Finally, screw the fastening nut 44 onto the end of the pull rod 42 located on the upper side of the end face of the cover plate 20. Next, pour solution A 100 into the first test tube 10, and quickly install the sealing plug 30 with the second test tube 40 and the cover plate 20 at the mouth of the first test tube 10; place the assembled reaction tube under specific conditions (such as heating or water cooling, depending on the specific test item) for 20-30 minutes to allow solution A 100 to react preferentially; then pull the lever 42 upward by tightening the nut 44 to disengage the sealing plug 41 from the leakage hole, thereby allowing solution B 200 to flow downward through the leakage hole and mix with the preferentially reacted solution A 100 to complete the test.

[0025] Example 2:

[0026] As a further optimization of the present invention, based on the solution of Embodiment 1, for ease of operation, as follows: Figure 4 As shown, an operating handle 11 is provided on one side of the outer wall of the first test tube 10, so as to facilitate the picking up and shaking of the first test tube 10.

[0027] Example 3:

[0028] As a further optimization of the present invention, based on the solution of Embodiment 1, in order to ensure the tight connection between the first test tube 10 and the cover plate 20, a positioning card 12 is provided on the outer wall of the first test tube 10 located on the upper side of the operating handle 11, and an elastic card 22 is provided on the bottom surface of the outer ring of the cover plate 20 corresponding to the positioning card 12 (e.g., Figure 4 As shown, the side of the positioning card 12 away from the first test tube 10 is set as an inclined structure that slopes outward from the first test tube 10. The bottom of the elastic card 22 and the side of the elastic card 22 near the first test tube 10 are set as an equal inclined structure. The clip of the elastic card 22 is connected to the bottom surface of the cover plate 20 through an elastic rod. The connection between the cover plate 20 and the first test tube 10 is achieved by fixing the positioning card 12 and the elastic card 22.

Claims

1. A reaction tube for detection, characterized in that: It includes a first test tube, a cover plate, a sealing plug, and a second test tube. The sealing plug is fixedly installed on the bottom surface of the cover plate and is coaxial with the cover plate. The sealing plug is installed corresponding to the inner ring of the first test tube, and multiple sealing rubber rings are evenly arranged on the outer wall of the sealing plug along its axial direction. The second test tube is located in the middle of the sealing plug. The size of the cover plate is larger than the outer wall size of the first test tube.

2. The reaction tube for detection according to claim 1, characterized in that: The outer diameter of the second test tube is no greater than half the inner diameter of the first test tube.

3. A detection reaction tube according to claim 1 or 2, characterized in that: The sealing plug has a through hole in the middle and an internal thread on the inner wall of the through hole. The outer wall of the top of the second test tube has an external thread corresponding to the internal thread.

4. A detection reaction tube according to claim 1 or 2, characterized in that: A sealing plug is provided on the bottom surface of the cover plate and inside the through hole. The middle part of the sealing plug protrudes downward and the protrusion corresponds to the inner diameter of the second test tube. The upper diameter of the sealing plug is larger than the outer diameter of the second test tube.

5. A detection reaction tube according to claim 1, characterized in that: The second test tube has a leakage hole in the middle of the bottom surface, and the leakage hole is a through hole structure; a sealing plug is set at the leakage hole and a pull rod is fixedly set on the top surface of the sealing plug. The end of the pull rod away from the sealing plug passes through the sealing plug and the cover plate in sequence; the outer wall of the end of the pull rod located on the upper side of the top surface of the cover plate is connected to the fastening nut by a connecting thread.

6. A detection reaction tube according to claim 5, characterized in that: A positioning bracket is fixedly installed in the middle of the inner wall of the second test tube, and a pull rod passes through the positioning bracket and is slidably connected.

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