A mechanism module and a modular biochemical analyzer

Abstract

This utility model relates to the field of biochemical detection technology, and discloses a mechanism module and a modular biochemical analyzer. The mechanism module includes a reaction disk disposed in the center of the mechanism base, with several reaction cups arranged in a ring inside the reaction disk; a reaction disk drive module, the output end of which is connected to the reaction disk; a photoelectric colorimetric module disposed on the outside of the reaction disk; a sample dispensing mechanism for sample dispensing and cleaning; a reagent dispensing mechanism; a mixing mechanism; a cleaning mechanism for cleaning the reaction cups by dispensing and draining liquids; and a liquid path module. The sample dispensing mechanism, reagent dispensing mechanism, mixing mechanism, and cleaning mechanism are arranged sequentially along the rotation direction of the reaction disk. The mechanism base also includes an emergency tube holder, into which an emergency test tube rack is inserted, with several test tube-compatible insertion holes arranged in a ring on the emergency test tube rack.

Description

Technical Field

[0001] This utility model relates to the field of biochemical detection technology, and in particular to a core module and a modular biochemical analyzer. Background Technology

[0002] A biochemical analyzer, also known as a biochemical analyzer, is an instrument that uses photoelectric colorimetry to measure specific chemical components in body fluids. Due to its fast measurement speed, high accuracy, and low reagent consumption, it is now widely used in hospitals at all levels. When used in conjunction with other instruments, it can greatly improve the efficiency and effectiveness of routine biochemical testing. An automated biochemical analyzer completes some or all of the steps in biochemical analysis, such as sampling, reagent addition, interference removal, mixing, temperature control, colorimetry, result calculation, report printing, and cleaning, by mimicking manual operation. Existing biochemical analyzers typically have independent sample trays, reagent trays, and reaction trays, and are equipped with multiple sampling needles. These devices are large and complex, making maintenance difficult in actual use. The operation of a biochemical analyzer requires the coordinated work of multiple mechanisms, and the complex structure of traditional equipment directly leads to the need for the entire machine to be repaired when small parts are damaged, affecting the equipment's usability. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a core module and a modular biochemical analyzer, which facilitates the modular assembly of the entire biochemical analyzer.

[0004] The technical solution of this utility model is as follows: On one hand, this utility model discloses a mechanism module, including a mechanism base; a reaction disk, the reaction disk being disposed in the middle of the mechanism base, and a plurality of reaction cups arranged in a ring within the reaction disk; a reaction disk drive module, the output end of which is connected to the reaction disk for driving the reaction disk to rotate; a photoelectric colorimetric module, disposed outside the reaction cups, for performing photoelectric colorimetric analysis on the solutions within the reaction cups; a sample dispensing mechanism for dispensing and cleaning samples; a reagent dispensing mechanism, including a first reagent dispensing unit and a second reagent dispensing unit, for dispensing and cleaning reagents; and a stirring and mixing mechanism, including a first stirring and mixing unit. The reaction vessel includes a first unit and a second mixing unit for mixing the sample solution and reagent solution within the reaction vessel; a cleaning mechanism for cleaning the reaction vessel by filling and draining liquids; and a liquid path module connected to the sample filling mechanism, reagent filling mechanism, mixing mechanism, and cleaning mechanism for liquid transport during the biochemical reaction. The sample filling mechanism, reagent filling mechanism, mixing mechanism, and cleaning mechanism are arranged sequentially along the rotation direction of the reaction plate. The liquid path module is located at the bottom of the mechanism base, which also includes an emergency tube holder with an emergency test tube rack inserted therein. The emergency test tube rack has several insertion holes arranged in a ring for matching test tubes.

[0005] As can be seen from the above scheme, the reaction plate is used for the injected sample and reagent to react, the photoelectric colorimetric module is used to perform photoelectric colorimetric analysis on the liquid in the reaction cup to perform biochemical analysis, the reagent dispensing mechanism is used to add the reagent to the reaction cup after taking the reagent, the sample dispensing mechanism is used to add the sample solution to the reaction cup, the stirring and mixing mechanism is used to stir and mix the solution in the reaction cup to ensure that it reacts fully and to ensure the accuracy of the detection results, and the test tube rack is used to insert test tubes so that the core module can work independently and save the equipment's floor space. The core module provided by this utility model has complete biochemical analyzer functions and can fully realize biochemical detection after adding two reagents.

[0006] The cleaning mechanism includes a linear suction module, a suction seat mounted on the output end of the linear suction module, and several sets of suction pipes mounted at the bottom of the suction seat. Each suction pipe set includes a rinsing pipe and a drain pipe arranged side-by-side at the bottom of the suction seat. The suction pipe sets are connected to the bottom of the suction seat through mounting holes. The linear suction module includes a suction seat, a suction motor connected to the suction seat, a lead screw connected to the output end of the suction motor, and a nut seat threaded onto the lead screw. The suction seat is connected to the nut seat via a connecting block. Therefore, the cleaning mechanism rinses the reaction cup with water through the rinsing pipes, and the drain pipes are used to draw out and discharge the rinsed aqueous solution from the reaction cup.

[0007] The mixing mechanism includes a stirring motor, a blending motor, a reduction gear set, a blending connector, a stirring head, and a stirring paddle disposed at the bottom of the stirring head. The reduction gear set is connected to the output end of the blending motor. The reduction gear set includes a first pulley and a second pulley connected to the first pulley via a conveyor belt. The diameter of the first pulley is smaller than the diameter of the second pulley. The blending connector is coaxially connected to the second pulley. The outer edge of the blending connector is provided with a limiting groove through a limiting protrusion. A connecting shaft is connected in the limiting groove. The stirring head is fixedly connected to the connecting shaft through a connecting seat. The core seat is horizontally provided with a slide rail above the reduction gear set. The connecting seat is slidably engaged with the slide rail. A stirring and cleaning cup is correspondingly disposed below the stirring paddle. Therefore, the stirring motor is used to drive the stirring paddle to rotate and achieve stirring. The first pulley and the second pulley are connected for transmission to achieve deceleration. The mixing motor is used to drive the mixing connector to rotate, so that the stirring head drives the stirring paddle to move horizontally and vertically at the same time. The forward and reverse rotation of the mixing motor realizes the advance and retraction of the stirring paddle.

[0008] The liquid circuit module includes a water storage unit, a water supply pipeline unit connected to the water storage unit, and a waste liquid collection unit. The water storage unit includes a water tank, a water pump, a constant pressure regulator, and a defoaming module. The defoaming module includes a vacuum pump and a defoamer connected to the output end of the vacuum pump. The output end of the water storage tank is connected to the inlet of the constant pressure regulator via the water pump. The outlet of the constant pressure regulator is connected to the inlet of the defoaming module. The inlet and outlet ends of the sample dispensing mechanism, the reagent dispensing mechanism, the mixing mechanism, and the cleaning mechanism are respectively connected to the defoamer and the waste liquid collection unit. The waste liquid collection unit includes a pump and a waste liquid collection tank. Therefore, the constant pressure regulator maintains the water pressure of the liquid circuit system, the defoamer eliminates air bubbles in the water using the vacuum pump to prevent bubbles from adhering to the pipe walls, thus reducing the risk of contamination, and the waste liquid collection tank collects the waste liquid after cleaning.

[0009] A negative pressure water suction unit is provided between the water storage tank and the constant pressure device. The negative pressure water suction unit includes a diaphragm pump and a buffer tank connected to the diaphragm pump. The buffer tank is equipped with an exhaust port, a water inlet, and a water outlet. The water inlet is connected to the water storage tank, and the water outlet is connected to the water pump. Therefore, the buffer tank uses the diaphragm pump to expel excess gas and create negative pressure. The buffer tank, connected to the water storage tank through the water inlet, achieves negative pressure water suction, thereby replenishing the liquid pipeline and realizing the automatic water supply of the liquid system.

[0010] A display screen is connected to the upper part of the mechanism base via a support arm, and the display screen is electrically connected to the photoelectric colorimetric module. Therefore, the display screen is used to display the photoelectric colorimetric results in the reaction vessel.

[0011] On the other hand, this utility model also discloses a modular biochemical analyzer, including the aforementioned core module, sample delivery module, and reagent compartment module. The sample delivery module is assembled outside the sample dispensing mechanism, and the reagent compartment module is assembled outside the reagent dispensing mechanism. The sample delivery module includes a sample injection unit, a transmission unit, and a buffer unit arranged sequentially along the sample delivery direction. The sample injection unit and the buffer unit are respectively located on both sides of the transmission unit. A first inlet and a second inlet communicating with the transmission unit are respectively provided on one side of the sample injection unit and the buffer unit. Both the sample injection unit and the buffer unit are provided with... The conveyor belt assembly includes a conveyor frame, a conveyor module mounted on the conveyor frame, a detection optocoupler, and a scanner mounted on the two inner sidewalls of the conveyor frame. The detection optocoupler is electrically connected to the conveyor module, and the scanner is electrically connected to the sample dispensing mechanism. The conveyor module includes two sets of parallel positioning straps and a guide rail between the positioning straps. Several positioning protrusions are equidistantly arranged on the positioning straps. A test tube rack body is mounted on the conveyor frame via the positioning straps. The bottom of the test tube rack body slides in conjunction with the guide rail. A display panel adapted to the scanner is provided on the front side of the conveyor frame.

[0012] As can be seen from the above scheme, the sample injection unit is used to inject the sample solution, the transmission unit is combined with the sample dispensing mechanism to realize the sequential dispensing of the sample solution in the reaction plate, the detection optocoupler is used to detect the position of the sample tube in the transmission system, and positioning is achieved by cooperating with the track of the transmission unit, the scanner is used to scan the label information on the test tube during transmission by the transmission unit, multiple test items can be expanded by attaching a reagent compartment module to the core module, and automatic continuous sample injection is achieved by attaching and assembling the sample injection and delivery module and using the track to realize wireless expansion of the sample.

[0013] The test tube rack body is provided with several insertion hole units for placing test tubes. Each insertion hole unit includes outer insertion holes arranged opposite each other and two rows of inner insertion holes located inside the outer insertion holes. The outer and inner insertion holes are spaced apart along their length and are staggered. A first detection slot is provided on the outer circumference of each outer insertion hole, and a second detection slot is provided on the outer circumference of each inner insertion hole. There is a gap between adjacent outer insertion holes, and this gap communicates with the second detection slot. The insertion hole unit is provided with an elastic clamping element. Therefore, the first and second detection slots facilitate the scanning and detection of test tubes on the test tube rack body. The staggered arrangement of the insertion hole units on the test tube rack body increases the storage capacity of the test tubes, allowing the test tube rack to be placed independently without the risk of tipping over. This enables a complete process of direct transmission for sampling and testing after initial sampling, expanding application scenarios.

[0014] The reagent compartment module includes a reagent compartment base with a reagent compartment cover. Two sets of reagent trays are arranged side-by-side inside the reagent compartment base. A cooling module is installed below the reagent trays via a cooling box. Reagent sampling ports are provided on the reagent compartment cover corresponding to the two sets of reagent trays. The two sets of reagent trays are coaxially connected to the output ends of two sets of rotary drive modules. A scanning module is provided on the reagent compartment base corresponding to the reagent trays. Several first reagent placement slots and second reagent placement slots are arranged in a ring on the reagent trays. The second reagent placement slots are located in the inner circle of the first reagent placement slots. A first slot is provided on the outer side of the first reagent placement slots. A gap is provided between adjacent first reagent placement slots. The gap communicates with the second reagent placement slot to form a second slot. The scanning module includes a scanning base and a scanner installed in the scanning base. A detection port is provided on the side of the scanning base facing the reagent trays. Therefore, the refrigeration module is used to preserve reagents at low temperatures through a refrigeration cycle. The two sets of reagent trays rotate independently and have two sets of barcode scanners to automatically set the daily reagent quota for each item and automatically detect the reagent expiration date. This allows for the addition of two types of reagents and is suitable for biochemical analysis of different test items. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the movement module;

[0016] Figure 2 This is a schematic diagram of the structure of a biochemical analyzer;

[0017] Figure 3 This is a schematic diagram of the reaction disk structure;

[0018] Figure 4 This is a schematic diagram of the sample dispensing mechanism;

[0019] Figure 5 This is a schematic diagram of the stirring and mixing mechanism;

[0020] Figure 6 This is a schematic diagram of the sample delivery module;

[0021] Figure 7 This is a structural diagram of the reagent storage module;

[0022] Figure 8 This is a partial structural diagram of the reagent storage module;

[0023] Figure 9 This is a connection diagram of the fluid circuit module;

[0024] Figure 10 This is a structural schematic diagram of the test tube rack body;

[0025] Figure 11 This is a schematic diagram of the reaction vessel. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] like Figures 1 to 11 As shown, this utility model discloses a mechanism module, including a mechanism base 1; a reaction disk 2, which is disposed in the middle of the mechanism base 1, and a plurality of reaction cups 21 are arranged in a ring inside the reaction disk 2; a reaction disk drive module 3, the output end of which is connected to the reaction disk 2 and is used to drive the reaction disk 2 to rotate; and a photoelectric colorimetric module 4, which is disposed outside the reaction cups 21 and is used to perform photoelectric colorimetric analysis on the solution inside the reaction cups 21.

[0028] The sample dispensing mechanism 5 is used for sample dispensing and cleaning; the reagent dispensing mechanism 6 includes a first reagent dispensing unit 61 and a second reagent dispensing unit 62, used for reagent dispensing and cleaning; the stirring and mixing mechanism 7 includes a first stirring and mixing unit and a second stirring and mixing unit, used for stirring and mixing the sample solution and reagent solution in the reaction vessel 21; the cleaning mechanism 8 is used for cleaning the reaction vessel 21 by flushing and draining liquids; the liquid path module 9 is connected to the sample dispensing mechanism 5, the reagent dispensing mechanism 6, the stirring and mixing mechanism 7, and the cleaning mechanism 8, respectively, for biochemical reactions. The liquid transport mechanism is used for liquid transport in biochemical reactions; the sample dispensing mechanism 5, reagent dispensing mechanism 6, stirring and mixing mechanism 7, and cleaning mechanism 8 are arranged sequentially along the rotation direction of the reaction plate 2; the liquid transport module 9 is located at the bottom of the mechanism base 1; the mechanism base 1 is also provided with an emergency tube holder 10; an emergency test tube rack 11 is inserted into the emergency tube holder 10; the emergency test tube rack 11 is provided with a number of insertion holes 101 adapted to test tubes in a ring shape; a display screen 12 is connected to the top of the mechanism base 1 through a support arm; the display screen 12 is electrically connected to the photoelectric colorimetric module 4.

[0029] In this embodiment, the mechanism base 1 has a first mounting groove on the side of the reagent dispensing mechanism 6 for placing emergency reagent bottles or first enhanced cleaning bottles. The mechanism base 1 also has a second mounting groove on the side of the sample dispensing mechanism 5 for placing emergency sample bottles or second enhanced cleaning bottles, facilitating the mechanism module to independently complete biochemical analysis or perform secondary enhanced cleaning. The photoelectric colorimetric module is a photoelectric colorimetric box located on the side of the reaction disk 2. The reaction disk drive module 3 includes a reaction disk drive motor 31, a first transmission wheel connected to the reaction disk drive motor 31, and a second transmission wheel connected to the first transmission wheel. Two drive wheels 32 and a reaction disk conveyor belt 33 covering the first and second drive wheels 32. The reaction disk 2 is provided with a detection hole 22 corresponding to the photoelectric colorimeter box. The reaction cup 21 is arc-shaped and has several liquid storage tanks 211. The end of the reaction cup 21 is provided with a placement flange for placing on the reaction disk 2. Elastic clips 213 are provided on both sides of the reaction cup 21. After the reaction cup 21 is installed in the limiting mounting groove of the reaction disk, it is locked by the elastic clips 213 to prevent displacement during rotation and ensure the accuracy of sample and reagent dispensing.

[0030] Both the sample dispensing mechanism 5 and the reagent dispensing mechanism 6 include a drive motor 51, a lifting motor 52, a rotating shaft 53, a sample dispensing head 54, and a sample dispensing needle 55. The sample dispensing needle 55 is located at the bottom of the sample dispensing head 54, which is connected to the output end of the drive motor 51 via the rotating shaft. A sample dispensing needle cleaning tube 56 is correspondingly provided below the sample dispensing needle 55. The drive motor 51 is connected to the rotating shaft 53 via a first synchronous pulley set. The output end of the lifting motor 52 is connected to a second conveyor pulley set. The rotating shaft 53 is connected to the conveyor belt 58 on the second conveyor pulley set via a coaxial connecting seat 57. In this embodiment, the sample dispensing mechanism 5 and the reagent dispensing mechanism 6 realize sample dispensing and reagent dispensing respectively through lifting and rotation.

[0031] The cleaning mechanism 8 includes a liquid suction linear module, a suction seat 81 disposed on the output end of the liquid suction linear module, and a plurality of suction pipe groups disposed at the bottom of the suction seat 81. The suction pipe group includes a rinsing pipe 82 and a drain pipe 83 disposed side by side at the bottom of the suction seat 81. The suction pipe group is connected to the bottom of the suction seat 81 through a mounting hole 811. The liquid suction linear module includes a liquid suction seat 84, a liquid suction motor 85 connected to the liquid suction seat 84, a lead screw 86 connected to the output end of the liquid suction motor 85, and a nut seat 87 threadedly connected to the lead screw 86. The suction seat 81 is connected to the nut seat 87 through a connecting block.

[0032] The mixing mechanism 7 includes a stirring motor, a mixing motor 72, a reduction gear set, a mixing connector 74, a stirring head 75, and a stirring paddle 76 disposed at the bottom of the stirring head 75. The reduction gear set is connected to the output end of the mixing motor 72. The reduction gear set includes a first pulley 731 and a second pulley 733 that is connected to the first pulley 731 via a conveyor belt 732. The diameter of the first pulley 731 is smaller than the diameter of the second pulley 733. The mixing connector 74 is coaxially connected to the second pulley 733. The outer edge of the mixing connector 74 is provided with a limiting slot 741 through a limiting protrusion. A connecting shaft 77 is connected in the limiting slot 741. The stirring head 75 is fixedly connected to the connecting shaft 77 through a connecting seat 78. The core base 1 is horizontally provided with a slide rail 79 above the reduction gear set. The connecting seat 78 is slidably engaged with the slide rail 79. A stirring and cleaning cup 70 is correspondingly disposed below the stirring paddle 76.

[0033] The liquid circuit module 9 includes a water storage unit, a water supply pipeline unit connected to the water storage unit, and a waste liquid collection unit. The water storage unit includes a water tank 91, a water pump 92, a constant pressure device 93, and a defoaming module. The defoaming module includes a vacuum pump 94 and a defoamer 95 connected to the output end of the vacuum pump 94. The output end of the water tank 91 is connected to the inlet of the constant pressure device 93 through the water pump 92, and the outlet of the constant pressure device 93 is connected to the inlet of the defoaming module. The sample dispensing mechanism 5, the reagent dispensing mechanism 6, and the stirring and mixing mechanism are also included. The inlet and outlet of the uniformizing mechanism 7 and the cleaning mechanism 8 are respectively connected to the defoamer 95 and the waste liquid collection unit. The waste liquid collection unit includes a pump 98 and a waste liquid collection tank 99. A negative pressure water suction unit is provided between the water storage tank 91 and the constant pressure device 93. The negative pressure water suction unit includes a diaphragm pump 96 and a buffer tank 97 connected to the diaphragm pump 96. The buffer tank 97 is provided with an exhaust port, an inlet port and an outlet port. The inlet port is connected to the water storage tank 91 and the outlet port is connected to the water pump 92.

[0034] On the other hand, this utility model also discloses a modular biochemical analyzer, including the aforementioned core module, sample delivery module 13, and reagent compartment module 14. The sample delivery module 13 is assembled outside the sample dispensing mechanism 5, and the reagent compartment module 14 is assembled outside the reagent dispensing mechanism 6. The sample delivery module 13 includes a sample delivery unit 131, a transmission unit, and a buffer unit 132 arranged sequentially along the sample delivery direction. The sample delivery unit 131 and the buffer unit 132 are respectively arranged on both sides of the transmission unit. A first feed inlet and a second feed inlet communicating with the transmission unit are respectively provided on one side of the sample delivery unit 131 and the buffer unit 132. Both the sample delivery unit 131 and the buffer unit are provided with conveyor belts. The transmission unit includes... The system includes a transfer frame 133, a transfer module mounted on the transfer frame 133, a detection optocoupler 134, and a scanner 135 mounted on the two inner sidewalls of the transfer frame 133. The detection optocoupler 134 is electrically connected to the transfer module, and the scanner 135 is electrically connected to the sample dispensing mechanism 5. The transfer module includes two sets of parallel locking bands 1331 and a guide rail 1332 between the locking bands 1331. Several locking protrusions are equidistantly arranged on the locking bands 1331. A test tube rack body 15 is mounted on the transfer frame 133 by locking the locking bands 1331. The bottom of the test tube rack body 15 slides with the guide rail 1332. A display screen adapted to the scanner 135 is provided on the front side of the transfer frame 133.

[0035] The test tube rack body 15 is provided with a plurality of insertion hole units for placing test tubes. Each insertion hole unit includes an outer insertion hole 151 arranged on opposite sides and two rows of inner insertion holes 152 arranged inside the outer insertion holes 151. The outer insertion holes 151 and the inner insertion holes 152 are spaced apart along the length direction and are staggered. A first detection slot 1511 is provided on the outer circumferential surface of the outer insertion hole 151, and a second detection slot 1521 is provided on the outer circumferential surface of the inner insertion hole 152. There is a gap between adjacent outer insertion holes 151, and the gap communicates with the second detection slot 1521. An elastic clamping member 153 is provided on the insertion hole unit.

[0036] The reagent compartment module 14 includes a reagent compartment base 141, on which a reagent compartment cover 144 is fastened. Two sets of reagent trays 142 are arranged side-by-side inside the reagent compartment base 141. A cooling module is mounted on the reagent compartment base 141 below the reagent trays 142 via a cooling box 145. Reagent sampling ports 1441 are provided on the reagent compartment cover 144 corresponding to the two sets of reagent trays 142. The two sets of reagent trays 142 are coaxially connected to the output ends of two sets of rotary drive modules. A scanning module is mounted on the reagent compartment base 141 corresponding to the reagent trays 142. A ring is placed around the reagent trays 142. The device is provided with a plurality of first reagent placement slots 1421 and second reagent placement slots 1422. The second reagent placement slots 1422 are located in the inner circle of the first reagent placement slots 1421. A first slot 1423 is provided on the outer side of the first reagent placement slots 1421. A gap is provided between adjacent first reagent placement slots 1421. The gap communicates with the second reagent placement slots 1422 to form a second slot 1424. The scanning module includes a scanning base 143 and a scanner disposed in the scanning base 143. A detection port is provided on the side of the scanning base 143 facing the reagent tray 142.

[0037] Finally, it should be emphasized that the above description is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A movement module, characterized in that, include: Movement base (1); The reaction disk (2) is located in the middle of the core base (1), and a plurality of reaction cups (21) are arranged in a ring inside the reaction disk (2). A reaction disk drive module (3) is provided, the output end of which is connected to the reaction disk (2) and is used to drive the reaction disk (2) to rotate. A photoelectric colorimetric module (4) is disposed on the outside of the reaction cup (21) and is used to perform photoelectric colorimetric analysis on the solution inside the reaction cup (21); The sample filling mechanism (5) is used to fill and clean the sample; The reagent dispensing mechanism (6) includes a first reagent dispensing unit (61) and a second reagent dispensing unit (62), which are used to dispensing and cleaning reagents; The stirring and mixing mechanism (7) includes a first stirring and mixing unit and a second stirring and mixing unit, which are used to stir and mix the sample solution and reagent solution in the reaction vessel (21). The cleaning mechanism (8) is used to clean the reaction cup (21) by injecting and draining liquid; Liquid circuit module (9), which is connected to the sample dispensing mechanism (5), reagent dispensing mechanism (6), stirring and mixing mechanism (7) and cleaning mechanism (8) respectively, and is used for liquid circuit transportation in biochemical reaction; The sample dispensing mechanism (5), reagent dispensing mechanism (6), stirring and mixing mechanism (7) and cleaning mechanism (8) are arranged sequentially along the rotation direction of the reaction plate (2). The liquid circuit module (9) is located at the bottom of the core base (1). An emergency tube position (10) is also provided on the core base (1). An emergency test tube rack (11) is inserted into the emergency tube position (10). Several insertion holes (101) that are compatible with test tubes are arranged in a ring on the emergency test tube rack (11).

2. The movement module according to claim 1, characterized in that, The cleaning mechanism (8) includes a liquid suction linear module, a suction seat (81) set on the output end of the liquid suction linear module, and a plurality of suction pipe groups set at the bottom of the suction seat (81). The suction pipe group includes a flushing pipe (82) and a drain pipe (83) arranged side by side at the bottom of the suction seat (81). The suction pipe group is connected to the bottom of the suction seat (81) through a mounting hole (811). The liquid suction linear module includes a liquid suction seat (84), a liquid suction motor (85) connected to the liquid suction seat (84), a lead screw (86) connected to the output end of the liquid suction motor (85), and a nut seat (87) threadedly connected to the lead screw (86). The suction seat (81) is connected to the nut seat (87) through a connecting block.

3. A movement module according to claim 1, characterized in that, The mixing mechanism (7) includes a stirring motor, a mixing motor (72), a reduction gear set, a mixing connector (74), a stirring head (75), and a stirring paddle (76) disposed at the bottom of the stirring head (75). The reduction gear set is connected to the output end of the mixing motor (72). The reduction gear set includes a first pulley (731) and a second pulley (733) that is connected to the first pulley (731) via a conveyor belt (732). The diameter of the first pulley (731) is smaller than the diameter of the second pulley (733). The component (74) is coaxially connected to the second pulley (733). The outer edge of the mixing connector (74) is provided with a limiting groove (741) through a limiting protrusion. A connecting shaft (77) is connected in the limiting groove (741). The stirring head (75) is fixedly connected to the connecting shaft (77) through a connecting seat (78). The core seat (1) is horizontally provided with a slide rail (79) above the reduction wheel group. The connecting seat (78) and the slide rail (79) are slidably engaged. A stirring and cleaning cup (70) is correspondingly provided below the stirring paddle (76).

4. A movement module according to claim 1, characterized in that, The liquid circuit module (9) includes a water storage unit, a water supply pipeline unit connected to the water storage unit, and a waste liquid collection unit. The water storage unit includes a water tank (91), a water pump (92), a constant pressure device (93), and a defoaming module. The defoaming module includes a vacuum pump (94) and a defoamer (95) connected to the output end of the vacuum pump (94). The output end of the water tank (91) is connected to the inlet of the constant pressure device (93) through the water pump (92). The outlet of the constant pressure device (93) is connected to the inlet of the defoaming module. The inlet and outlet of the sample dispensing mechanism (5), the reagent dispensing mechanism (6), the stirring and mixing mechanism (7), and the cleaning mechanism (8) are respectively connected to the defoamer (95) and the waste liquid collection unit. The waste liquid collection unit includes a liquid pump (98) and a waste liquid collection bucket (99).

5. A movement module according to claim 4, characterized in that, A negative pressure water suction unit is provided between the water storage tank (91) and the constant pressure device (93). The negative pressure water suction unit includes a diaphragm pump (96) and a buffer tank (97) connected to the diaphragm pump (96). The buffer tank (97) is provided with an exhaust port, a water inlet port and a water outlet port. The water inlet port is connected to the water storage tank (91), and the water outlet port is connected to the water pump (92).

6. A movement module according to claim 1, characterized in that, The display screen (12) is connected above the mechanism base (1) via a support arm, and the display screen (12) is electrically connected to the photoelectric colorimetric module (4).

7. A modular biochemical analyzer comprising the core module according to any one of claims 1 to 5, characterized in that, The system includes the aforementioned core module, sample delivery module (13), and reagent compartment module (14). The sample delivery module (13) is assembled on the outside of the sample dispensing mechanism (5), and the reagent compartment module (14) is assembled on the outside of the reagent dispensing mechanism (6). The sample delivery module (13) includes a sample delivery unit (131), a transmission unit, and a buffer unit (132) arranged sequentially along the sample delivery direction. The sample delivery unit (131) and the buffer unit (132) are respectively arranged on both sides of the transmission unit. A first inlet and a second inlet communicating with the transmission unit are respectively provided on one side of the sample delivery unit (131) and the buffer unit (132). Both the sample delivery unit (131) and the buffer unit are provided with conveyor belts. The transmission unit includes a conveyor frame base (133) and is arranged on the conveyor frame. The transfer module, detection optocoupler (134), and scanner (135) on the two inner sidewalls of the transfer frame (133) are on the base (133). The detection optocoupler (134) is electrically connected to the transfer module, and the scanner (135) is electrically connected to the sample dispensing mechanism (5). The transfer module includes two sets of parallel positioning bands (1331) and a guide rail (1332) between the positioning bands (1331). Several positioning protrusions are equidistantly arranged on the positioning bands (1331). The test tube rack body (15) is mounted on the transfer frame (133) by positioning the positioning bands (1331). The bottom of the test tube rack body (15) slides with the guide rail (1332). A display screen adapted to the scanner (135) is provided on the front side of the transfer frame (133).

8. The modular biochemical analyzer according to claim 7, characterized in that, The test tube rack body (15) is provided with a plurality of insertion hole units for placing test tubes. The insertion hole unit includes an outer layer insertion hole (151) arranged on opposite sides and two rows of inner layer insertion holes (152) arranged inside the outer layer insertion hole (151). The outer layer insertion hole (151) and the inner layer insertion hole (152) are spaced apart along the length direction. The outer layer insertion hole (151) and the inner layer insertion hole (152) are staggered. A first detection slot (1511) is provided on the outer circumferential surface of the outer layer insertion hole (151), and a second detection slot (1521) is provided on the outer circumferential surface of the inner layer insertion hole (152). There is a gap between adjacent outer layer insertion holes (151), and the gap communicates with the second detection slot (1521). An elastic clamping member (153) is provided on the insertion hole unit.

9. The modular biochemical analyzer according to claim 7, characterized in that, The reagent compartment module (14) includes a reagent compartment base (141), a reagent compartment cover (144) is fastened to the reagent compartment base (141), two sets of reagent trays (142) are arranged side by side inside the reagent compartment base (141), a cooling module is provided below the reagent trays (142) via a cooling box (145) on the reagent compartment base (141), a reagent sampling port (1441) is provided on the reagent compartment cover (144) corresponding to the two sets of reagent trays (142) respectively, the two sets of reagent trays (142) are coaxially connected to the output ends of two sets of rotary drive modules respectively, a scanning module is provided on the reagent compartment base (141) corresponding to the reagent trays (142), and the reagent trays (142) The device is provided with a plurality of first reagent placement slots (1421) and second reagent placement slots (1422) arranged in a ring. The second reagent placement slots (1422) are arranged in the inner ring of the first reagent placement slots (1421). A first slot (1423) is provided on the outer side of the first reagent placement slots (1421). There is a gap between adjacent first reagent placement slots (1421). The gap communicates with the second reagent placement slots (1422) to form a second slot (1424). The scanning module includes a scanning base (143) and a scanner disposed in the scanning base (143). The scanning base (143) has a detection port on its side facing the reagent tray (142).

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