Kit for rapid detection of food microorganisms

Abstract

The invention relates to the technical field of food microorganism detection, in particular to a kit for rapidly detecting food microorganisms. According to the technical scheme, the kit comprises a kit shell assembly, a function positioning assembly is installed in the kit shell assembly, the function positioning assembly comprises a sample conveying assembly, and the function positioning assembly is provided with a reagent tube transposition assembly through the sample conveying assembly. The two sides of the protective air bag block are driven by the sliding clamping block to stretch outwards through the telescopic air cushion, so that the protective air bag block forms a concave wrapping assembly attached to the tail end of the reagent tube, the inward concave position of the protective air bag block prevents the reagent tube from being damaged by too large pressure, and the protruding position of the protective air bag block wraps the outer wall of the reagent tube; and the reagent tube sealing block at the other end is matched to extrude the piston, so that the piston and the reagent tube are in a sealed state all the time.

Description

Technical Field

[0001] The present invention relates to the technical field of food microorganism detection, in particular to a kit for rapid detection of food microorganisms. Background Art

[0002] The test kit for rapid detection of food microorganisms can obtain test results in a relatively short time, compared with the traditional culture method which takes several days or even longer. It greatly improves the detection efficiency, meets the needs of food production, processing, and various links for rapid acquisition of test results, and is helpful for health care and emergency response. However, when using the current test kit for rapid detection of food microorganisms, due to the complex ingredients of food, some substances such as fat, protein, pigment, preservatives, etc. may interfere with the detection process of the test kit and affect the accuracy of the test results. Therefore, it is necessary to invest in a variety of detection reagents to eliminate the hindering ingredients.

[0003] In the patent document with the publication number CN114047307A, a reagent kit for rapid detection of food microorganisms is disclosed, which includes a reagent rack device, the reagent rack device includes a reagent rack, gear holes are evenly and equidistantly opened on the right inner wall of the reagent rack, the number of gear holes is three, a positioning groove is opened on the lower side of the right inner wall of the reagent rack, a spring is fixedly connected to the lower inner wall of the positioning groove, a positioning block is fixedly connected to the upper end of the spring, the positioning block is inserted into the positioning groove, the positioning block is adapted to the positioning groove, a connecting column is fixedly connected to the left surface of the positioning block, a tray is fixedly connected to the connecting column at the end away from the positioning block, the connecting column is connected to the right side of the lower surface of the tray, the middle part of the surface of the tray is concave, and a cross-opening leather pad tube is embedded and fixedly connected in the middle part of the surface of the tray, so that the reagent tube is automatically stored.

[0004] When the above device is in use, a cross-opening leather pad tube is embedded in the middle of the surface of the tray, and then the reagent tube is stored in a specified position. The reagent tube usually needs to be put into a reagent for a rapid reaction to meet the needs of medical and emergency services. It is necessary to quickly stir the sample and the reagent in the reagent tube for detection. The existing reagent tube needs to be placed flat in the spectral analysis and chemical colorimetric component so that the spectral analysis and chemical colorimetric component can expand the information collection of the transparent part of the reagent tube when the reagent tube is placed flat. In the process, stirring is carried out at the same time, which can easily cause the piston to separate from the reagent tube, causing sample leakage and affecting the detection accuracy.

[0005] Therefore, the present application proposes a kit for rapid detection of food microorganisms. Summary of the invention

[0006] The purpose of the present invention is to address the problem in the background technology that the existing reagent tubes need to be placed flat in the spectral analysis and chemical colorimetric components so that when the reagent tubes are placed flat, the spectral analysis and chemical colorimetric components can expand the information collected by the transparent part of the reagent tubes. In the process, stirring is carried out at the same time, which easily causes the piston and the reagent tube to separate, causing sample leakage and affecting the detection accuracy. A kit for rapid detection of food microorganisms is proposed.

[0007] The technical solution of the present invention is a kit for rapid detection of food microorganisms, comprising a kit housing component: A function positioning component is installed inside the reagent kit housing component, and the function positioning component includes a sample transmission component, and the function positioning component is installed with a reagent tube replacement component through the sample transmission component; A reagent tube clamping assembly is installed on one side of the reagent tube transposition assembly, and the reagent tube clamping assembly includes an external rubber positioning block, one side of the external rubber positioning block is fixedly connected to a retractable reagent tube clamping ring through rubber, two slide rail positioning blocks are fixedly connected to the two sides of the external rubber positioning block, and the surfaces of the two slide rail positioning blocks are slidably connected with the same number of reagent tube sealing blocks, one side of the reagent tube sealing block is fixedly connected to a protective airbag block, one side of the protective airbag block is provided with two retractable air cushions, and the protective airbag block is fixedly connected to a retractable air column on the side facing the reagent tube sealing block, a positioning air pipe is fixedly installed inside the reagent tube sealing block, and sliding cavity positioning card blocks are fixedly connected to the two sides of the positioning air pipe of the reagent tube sealing block, and two groups of compression airbags are fixedly installed on both sides of the positioning air pipe; The two groups of compression airbags, positioning air pipes and telescopic air columns are arranged in a connected state. A sliding card block is fixedly connected to one side of the compression airbag. The sliding card block is slidably installed inside the sliding cavity positioning card block. An auxiliary spring is fixedly installed between the sliding card block and the sliding cavity positioning card block. The sliding card block passes through one side of the sliding cavity positioning card block and is fixedly installed on one side of the protective airbag block.

[0008] Optionally, the reagent kit shell assembly includes a reagent kit shell fixedly mounted on the outside of the sample transmission assembly, a sealing cover is hinged on one side of the reagent kit shell, a spectral analysis and chemical colorimetric inlet and an image intelligent interpretation inlet are provided on one side of the reagent kit shell, and a power connection terminal is provided on the side of the reagent kit shell away from the spectral analysis and chemical colorimetric inlet and the image intelligent interpretation inlet.

[0009] Optionally, the function positioning component also includes an image determination module for analyzing the data transmitted by the sample transmission component.

[0010] Optionally, the reagent tube replacement assembly includes an outer detection frame, and two gears are installed on both sides of the outer detection frame through forward and reverse motors, and the outer sides of the two gears are meshed and connected with double-sided rack blocks.

[0011] Optionally, two hollow positioning blocks are fixedly connected to both sides of the bilateral rack block, the two hollow positioning blocks are internally slidably connected with the same number of corresponding sliding rods, and a hollow sliding cavity block is fixedly installed between the two corresponding sliding rods.

[0012] Optionally, an eccentric wheel is attached to the inner wall of the hollow sliding cavity block, and the eccentric wheel is rotatably mounted on one side of the double-sided rack block.

[0013] Optionally, a positioning rod is fixedly connected to one side of the eccentric wheel, a slide rail is provided on the surface of the double-sided rack block, the positioning rod is slidably installed inside the slide rail, an arc groove is provided on one side of the eccentric wheel, the outer side of the positioning rod is rotatably connected to a ring gear, the arc groove of the eccentric wheel is installed with a corresponding gear, the outer side of the ring gear is meshingly connected with the corresponding gear, the ring gear is rotatably installed inside the eccentric wheel, a slide rail positioning block is fixedly installed on one side of the ring gear, a fixed gear block is fixedly installed on one side of the positioning rod, and the fixed gear block is fixedly installed on the bottom of an external rubber positioning block.

[0014] Optionally, a linkage ring block is fixedly connected to the outer side of the positioning rod, and two gear rods are rotatably connected to the outer side of the linkage ring block. The gear rods are arranged in a meshing state with the slide rail positioning block, and one side of the gear rod is fixedly connected to a corresponding gear clamping rod, and one side of the corresponding gear clamping rod is meshingly connected to a threaded gear rod, and the threaded gear rod is rotatably installed on the outer side of an external rubber positioning block, and the reagent tube sealing block is threadedly connected to the outer side of the threaded gear rod.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. The sliding block drives the two sides of the protective airbag block to expand and contract outward through the telescopic air cushion, so that the protective airbag block forms a concave wrapping component that fits the end of the reagent tube. The protective airbag block is concave inward to prevent excessive pressure from damaging the reagent tube, and the convex position of the protective airbag block wraps the outer wall of the reagent tube to limit and protect it when it is shaken, and cooperates with the reagent tube sealing block at the other end to squeeze the piston, so that the piston is always in a sealed state with the reagent tube; 2. The eccentric rotating wheel shakes under the limit of the hollow sliding cavity block to fully rotate and mix the sample and the reagent in the reagent. At the same time, the reagent tube is driven to rotate by the retractable reagent tube clamping ring, which facilitates the detection instrument inside the sample transmission component to fully collect data from the reagent tubes in different positions; 3. The linkage collar block drives the corresponding gear clamping rod to rotate, and the corresponding gear clamping rod drives the threaded gear rod to rotate by meshing with the threaded gear rod. The reagent tube sealing block drives the reagent tube sealing block to move toward the reagent tube through thread conduction with the threaded gear rod, fully clamping the reagent tube, thereby improving the stability of the reagent tube when shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a kit for rapid detection of food microorganisms of the present invention; Figure 2 It is a structural schematic diagram of the sealing cover of the present invention; Figure 3 It is a structural schematic diagram of the functional positioning component of the present invention; Figure 4 It is a structural schematic diagram of the reagent tube transposition assembly of the present invention; Figure 5 It is a structural schematic diagram of the retractable reagent tube clamping ring of the present invention; Figure 6 The present invention Figure 5 Enlarged view of the middle A area; Figure 7 It is a structural schematic diagram of the eccentric wheel of the present invention; Figure 8 It is a structural schematic diagram of the reagent tube sealing block of the present invention; Fig. 9 It is a structural schematic diagram of the telescopic air column of the present invention.

[0017] Figure numerals: 1. Test kit housing assembly; 101. Test kit housing; 102. Spectral analysis and chemical color development injection port; 103. Image intelligent interpretation injection port; 104. Sealing cover; 105. Power connection terminal; 2. Function positioning assembly; 201. Sample transmission assembly; 202. Image determination module; 3. Reagent tube transposition assembly; 301. Detection outer frame; 302. Gear; 303. Double-sided rack block; 304. Hollow slide cavity block; 305. Hollow positioning block; 306. Corresponding slide rod; 307. Eccentric rotating wheel; 308. Slide rail; 4 , reagent tube clamping assembly; 401, retractable reagent tube clamping ring; 402, fixed gear block; 403, slide rail positioning block; 404, positioning rod; 405, collar gear; 406, external rubber positioning block; 407, linkage collar block; 408, gear rod; 409, corresponding gear clamp rod; 410, threaded gear rod; 411, reagent tube sealing block; 412, protective air bag block; 413, retractable air column; 414, positioning air pipe; 415, compression air bag; 416, sliding block; 417, auxiliary spring; 418, sliding cavity positioning block. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] like Figure 1 - Figure 2 As shown, a kit for rapid detection of food microorganisms proposed by the present invention includes a kit housing component 1: The inside of the reagent box housing component 1 is installed with a functional positioning component 2, the functional positioning component 2 includes a sample transmission component 201, the functional positioning component 2 is installed with a reagent tube replacement component 3 through the sample transmission component 201, the reagent box housing component 1 includes a reagent box housing 101 fixedly installed on the outside of the sample transmission component 201, a sealing cover 104 is hinged on one side of the reagent box housing 101, a spectral analysis and chemical color development injection port 102 and an image intelligent interpretation injection port 103 are arranged on one side of the reagent box housing 101, and the reagent box housing 101 is far away from the spectral analysis and chemical color development injection port 102. A power connection terminal 105 is provided on one side of the image intelligent interpretation injection port 103. The staff inserts the reagent tube into the interior of the reagent kit housing 101 through the spectral analysis and chemical color development injection port 102. The power connection terminal 105 provides power, so that the functional positioning component 2 performs rapid spectral analysis and chemical color development analysis on the inside of the reagent tube. The functional positioning component 2 also includes an image determination module 202 for analyzing the data transmitted by the sample transmission component 201. The sample transmission component 201 transmits relevant samples for data collection, and the collected data is sent to the image determination module 202 for analysis.

[0020] like Figure 3 - Figure 8As shown, the reagent tube replacement component 3 includes an external detection frame 301, and two gears 302 are installed on both sides of the external detection frame 301 through a forward and reverse motor, and the outer sides of the two gears 302 are meshed and connected with a bilateral rack block 303, and the forward and reverse motor drives the gear 302 to rotate, and the gear 302 drives the bilateral rack block 303 to move from the inside of the external detection frame 301 to the outside of the reagent box housing 101 through meshing with the bilateral rack block 303, so as to facilitate the installation of the actual tube, and the forward and reverse motor drives the gear 302 to rotate in the opposite direction to store the test tube into the interior of the device again, and two hollow positioning blocks 305 are fixedly connected on both sides of the bilateral rack block 303, and the same number of corresponding sliding rods 306 are slidably connected inside the two hollow positioning blocks 305, A hollow slide block 304 is fixedly installed between the two corresponding slide bars 306, and an eccentric wheel 307 is attached to the inner wall of the hollow slide block 304. The eccentric wheel 307 is rotatably installed on one side of the double-sided rack block 303. As the second motor installed at the bottom of the double-sided rack block 303 drives the eccentric wheel 307 to rotate, the hollow slide block 304 slides along the hollow positioning block 305 under the rotation pressure of the eccentric wheel 307, and the eccentric wheel 307 shakes under the limit of the hollow slide block 304, so that the sample and the medicine in the reagent are fully rotated and mixed. At the same time, as the retractable reagent tube clamping ring 401 drives the reagent tube to rotate, it is convenient for the detection instrument inside the sample transmission component 201 to fully collect data from the reagent tubes in different positions.

[0021] like Figure 5 - Figure 8As shown, one side of the eccentric rotating wheel 307 is fixedly connected with a positioning rod 404, the surface of the double-sided rack block 303 is provided with a slide rail 308, the positioning rod 404 is slidably installed inside the slide rail 308, one side of the eccentric rotating wheel 307 is provided with an arc groove, the outer side of the positioning rod 404 is rotatably connected with a collar gear 405, the arc groove of the eccentric rotating wheel 307 is installed with a corresponding gear, the outer side of the collar gear 405 is meshed with the corresponding gear, and the collar gear 405 is rotatably installed on the eccentric rotating wheel 3 07, a guide rail positioning block 403 is fixedly installed on one side of the collar gear 405, a fixed gear block 402 is fixedly installed on one side of the positioning rod 404, and the fixed gear block 402 is fixedly installed on the bottom of the external rubber positioning block 406. The outer side of the positioning rod 404 is fixedly connected to a linkage collar block 407, and the outer side of the linkage collar block 407 is rotatably connected to two gear rods 408, and the gear rods 408 are arranged in a meshing state with the guide rail positioning block 403. One side of the gear rod 408 is fixedly connected to a pair of gear rods 408. The gear lever 409 is meshed with a threaded gear lever 410 on one side of the corresponding gear lever 409. The threaded gear lever 410 is rotatably mounted on the outside of the external rubber positioning block 406. The reagent tube sealing block 411 is threadedly connected to the outside of the threaded gear lever 410. The motor located in the arc groove of the eccentric rotating wheel 307 drives the collar gear 405 to rotate. The collar gear 405 drives the slide rail positioning block 403 to rotate along the positioning rod 404. The linkage collar block 407 is fixed to the positioning rod 404. The gear lever 408 drives the gear rod 408 to rotate along the linkage ring block 407 by meshing with the slide rail positioning block 403, and the linkage ring block 407 drives the corresponding gear clamping rod 409 to rotate, and the corresponding gear clamping rod 409 drives the threaded gear rod 410 to rotate by meshing with the threaded gear rod 410, and the reagent tube sealing block 411 drives the reagent tube sealing block 411 to move toward the reagent tube through thread conduction with the threaded gear rod 410, fully clamping the reagent tube, thereby improving the stability of the reagent tube when shaking.

[0022] In this embodiment, Figure 5 - Fig. 9As shown, a reagent tube clamping assembly 4 is installed on one side of the reagent tube transposition assembly 3, and the reagent tube clamping assembly 4 includes an external rubber positioning block 406, one side of the external rubber positioning block 406 is fixedly connected with a retractable reagent tube clamping ring 401 through rubber, two slide rail positioning blocks 403 are fixedly connected to both sides of the external rubber positioning block 406, and the surfaces of the two slide rail positioning blocks 403 are slidably connected with the same number of reagent tube sealing blocks 411, one side of the reagent tube sealing block 411 is fixedly connected with a protective airbag block 412, one side of the protective airbag block 412 is provided with two retractable air cushions, and the protective airbag block 412 is fixedly connected with a retractable air column 413 facing the side of the reagent tube sealing block 411, A positioning air pipe 414 is fixedly installed inside the sealing block 411, and the reagent tube sealing block 411 is located on both sides of the positioning air pipe 414 and is fixedly connected with a sliding cavity positioning block 418. Two groups of compression air bags 415 are fixedly installed on both sides of the positioning air pipe 414. When the spectral analysis and chemical color development sampling port 102 is opened, the reagent tube replacement component 3 transports the reagent tube clamping component 4 from the spectral analysis and chemical color development sampling port 102 to the outside, and the staff inserts the reagent tube with the piston plugged into the retractable reagent tube clamping ring 401. The retractable reagent tube clamping ring 401 is used as an expandable component, and its two sides are fixed with rubber. Then the retractable reagent tube clamping ring 401 tightly installs the reagent tube according to the expansion of the rubber; Two groups of compression air bags 415, positioning air pipes 414 and telescopic air columns 413 are arranged in a connected state, and a sliding block 416 is fixedly connected to one side of the compression air bag 415, and the sliding block 416 is slidably installed inside the sliding cavity positioning block 418. An auxiliary spring 417 is fixedly installed between the sliding block 416 and the sliding cavity positioning block 418. The sliding block 416 passes through one side of the sliding cavity positioning block 418 and is fixedly installed on one side of the protective air bag block 412. The two reagent tube sealing blocks 411 move toward the two ends of the reagent tube along the slide rail positioning block 403, one reagent tube sealing block 411 fits the end of the reagent tube, and the other reagent tube sealing block 411 fits the piston. At the same time, as the two reagent tube sealing blocks 411 move toward the telescopic reagent tube clamping ring 401, the reagent tube is stably clamped, and during the rotation and shaking of the reagent tube, the two reagent tube sealing blocks 411 continue to move toward the center of the reagent tube. The reaction force of the pressure on the end of the reagent tube drives the protective airbag block 412 to press down toward one side of the telescopic air column 413. The telescopic air column 413 is pressurized to conduct the internal airflow through the positioning air pipe 414 to the two groups of compression airbags 415. The compression airbag 415 changes from a compressed state to an extended state. The compression airbag 415 squeezes the sliding block 416 and moves outward along the sliding cavity positioning block 418 under the limitation of the auxiliary spring 417. The sliding block 416 drives the two sides of the protective airbag block 412 to expand and contract outward through the telescopic air cushion, so that the protective airbag block 412 forms a concave wrapping component that fits the end of the reagent tube. The inward concave part of the protective airbag block 412 prevents the reagent tube from being damaged by excessive pressure, and the convex position of the protective airbag block 412 wraps the outer wall of the reagent tube, limits and protects it when it is shaken, and cooperates with the reagent tube sealing block 411 at the other end to squeeze the piston, so that the piston is always in a sealed state with the reagent tube.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. "Comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0024] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A kit for rapid detection of food microorganisms, comprising a kit housing component (1), characterized in that: A function positioning component (2) is installed inside the reagent kit housing component (1), the function positioning component (2) comprises a sample transmission component (201), and a reagent tube replacement component (3) is installed on the function positioning component (2) via the sample transmission component (201); A reagent tube clamping assembly (4) is installed on one side of the reagent tube replacement assembly (3), and the reagent tube clamping assembly (4) comprises an external rubber positioning block (406), one side of the external rubber positioning block (406) is fixedly connected to a retractable reagent tube clamping ring (401) via rubber, two sides of the external rubber positioning block (406) are fixedly connected to two slide rail positioning blocks (403), the surfaces of the two slide rail positioning blocks (403) are slidably connected to the same number of reagent tube sealing blocks (411), and one side of the reagent tube sealing block (411) is fixedly connected to the reagent tube sealing ring (401). A protective airbag block (412) is connected, two telescopic air cushions are arranged on one side of the protective airbag block (412), a telescopic air column (413) is fixedly connected to the side of the protective airbag block (412) facing the reagent tube sealing block (411), a positioning air pipe (414) is fixedly installed inside the reagent tube sealing block (411), sliding cavity positioning clamps (418) are fixedly connected on both sides of the positioning air pipe (414) of the reagent tube sealing block (411), and two groups of compression airbags (415) are fixedly installed on both sides of the positioning air pipe (414); The two groups of compression airbags (415), the positioning air pipe (414) and the telescopic air column (413) are arranged in a connected state; one side of the compression airbag (415) is fixedly connected with a sliding block (416); the sliding block (416) is slidably mounted inside a sliding cavity positioning block (418); an auxiliary spring (417) is fixedly mounted between the sliding block (416) and the sliding cavity positioning block (418); the sliding block (416) passes through one side of the sliding cavity positioning block (418) and is fixedly mounted on one side of the protective airbag block (412).

2. A kit for rapid detection of food microorganisms according to claim 1, characterized in that: The reagent kit housing component (1) comprises a reagent kit housing (101) fixedly mounted on the outside of a sample transmission component (201); a sealing cover (104) is hingedly connected to one side of the reagent kit housing (101); a spectral analysis and chemical color development inlet (102) and an image intelligent interpretation inlet (103) are provided on one side of the reagent kit housing (101); and a power supply connection terminal (105) is provided on one side of the reagent kit housing (101) away from the spectral analysis and chemical color development inlet (102) and the image intelligent interpretation inlet (103).

3. A kit for rapid detection of food microorganisms according to claim 1, characterized in that: The function positioning component (2) also includes an image determination module (202) for analyzing the data transmitted by the sample transmission component (201).

4. A kit for rapid detection of food microorganisms according to claim 1, characterized in that: The reagent tube replacement assembly (3) comprises an outer detection frame (301), two gears (302) are installed on both sides of the outer detection frame (301) via a forward and reverse motor, and the outer sides of the two gears (302) are meshedly connected with double-sided rack blocks (303).

5. A kit for rapid detection of food microorganisms according to claim 4, characterized in that: Two hollow positioning blocks (305) are fixedly connected to the two sides of the double-sided rack block (303); the same number of corresponding sliding rods (306) are slidably connected inside the two hollow positioning blocks (305); and a hollow sliding cavity block (304) is fixedly installed between the two corresponding sliding rods (306).

6. A kit for rapid detection of food microorganisms according to claim 5, characterized in that: An eccentric rotating wheel (307) is attached to the inner wall of the hollow sliding cavity block (304), and the eccentric rotating wheel (307) is rotatably mounted on one side of the double-sided rack block (303).

7. A kit for rapid detection of food microorganisms according to claim 6, characterized in that: A positioning rod (404) is fixedly connected to one side of the eccentric rotating wheel (307); a slide rail (308) is provided on the surface of the double-sided rack block (303); the positioning rod (404) is slidably mounted inside the slide rail (308); an arc groove is provided on one side of the eccentric rotating wheel (307); a collar gear (405) is rotatably connected to the outer side of the positioning rod (404); a corresponding gear is installed in the arc groove of the eccentric rotating wheel (307); the outer side of the collar gear (405) is meshingly connected to the corresponding gear; the collar gear (405) is rotatably mounted inside the eccentric rotating wheel (307); a slide rail positioning block (403) is fixedly mounted on one side of the collar gear (405); a fixed gear block (402) is fixedly mounted on one side of the positioning rod (404); and the fixed gear block (402) is fixedly mounted on the bottom of an external rubber positioning block (406).

8. A kit for rapid detection of food microorganisms according to claim 7, characterized in that: The outer side of the positioning rod (404) is fixedly connected to a linkage ring block (407), and the outer side of the linkage ring block (407) is rotatably connected to two gear rods (408). The gear rods (408) are arranged in a meshing state with the slide rail positioning block (403), and one side of the gear rod (408) is fixedly connected to a corresponding gear clamping rod (409), and one side of the corresponding gear clamping rod (409) is meshingly connected to a threaded gear rod (410), and the threaded gear rod (410) is rotatably installed on the outer side of the external rubber positioning block (406), and the reagent tube sealing block (411) is threadedly connected to the outer side of the threaded gear rod (410).

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