Constant-temperature full-automatic cleaning and liquid adding module

Abstract

The utility model relates to the technical field of spectrum detection, and discloses a constant-temperature full-automatic cleaning and liquid adding module which comprises an experiment table and a detection rotating disc rotationally arranged on the experiment table, a plurality of inserting holes are annularly formed in the detection rotating disc in the circumferential direction of the detection rotating disc, and a supporting plate is arranged on the experiment table in a lifting mode and located above the detection rotating disc. A plurality of liquid suction assemblies are annularly arranged in the axial direction of the detection rotating disc, each liquid suction assembly comprises a liquid suction needle and a liquid suction pipe, the liquid suction pipe is connected with the top end of the liquid suction needle and an external waste liquid barrel, one side of each liquid suction needle is provided with a liquid injection needle for injecting cleaning liquid or reagents into the reaction cups, and the liquid injection needles are located behind the liquid suction needles in the rotating direction of the detection rotating disc. The top end of the liquid injection needle is connected with a liquid injection pipe, the liquid injection pipe is connected with an external liquid supply device filled with cleaning liquid or reagents, the experiment table is further provided with a heating module, the liquid injection needle is arranged on the heating module, and the liquid injection pipe is attached to the heating module. The method has the effect of improving the accuracy of a spectrum detection result.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spectral detection, and in particular to a constant-temperature full-automatic cleaning and liquid adding module. BACKGROUND

[0002] In the field of modern spectral detection, whether it is scientific research in the laboratory or accurate measurement of the spectral characteristics of liquid samples in industrial production, temperature is a key factor affecting the detection results. In high-precision spectral analysis instruments, even a slight fluctuation in the temperature of samples and reagents can cause significant deviation in the detection results.

[0003] The existing cleaning and liquid adding process has a low degree of automation, and many operations need to be performed manually, such as manually replacing the reaction cup, adding cleaning liquid and reagents, etc. This not only consumes time and effort, but also easily introduces human errors. Moreover, in the process of spectral detection, the existing cleaning and liquid adding device generally lacks effective temperature control measures. When cleaning and liquid adding operations are performed on different samples, it is impossible to ensure that the cleaning liquid and reagents are at a constant temperature throughout the process, which will affect the chemical properties of the samples and the reaction process, and thus interfere with the accuracy of the spectral detection results. CONTENT OF THE INVENTION

[0004] In order to improve the accuracy of spectral detection results, the present application provides a constant-temperature full-automatic cleaning and liquid adding module.

[0005] The constant-temperature full-automatic cleaning and liquid adding module provided by the present application adopts the following technical solution:

[0006] A constant-temperature full-automatic cleaning and liquid adding module, comprising a test bench and a detection turntable rotatably arranged on the test bench, a plurality of plug-in holes for accommodating reaction cups are arranged around the detection turntable in the circumferential direction of the detection turntable, a support plate is arranged on the test bench and is movable up and down, the support plate is located above the detection turntable and is arranged around the support plate in the axial direction of the support plate, a plurality of liquid suction assemblies are arranged around the support plate, each liquid suction assembly comprises a liquid suction needle and a liquid suction pipe, the bottom end of the liquid suction needle is inserted into a reaction cup in the vertical direction to suck waste liquid, the liquid suction pipe is connected to the top end of the liquid suction needle and an external waste liquid tank, and a liquid injection needle for injecting cleaning liquid or reagents into the reaction cup is arranged on one side of each liquid suction needle, the liquid injection needle is located behind the liquid suction needle along the rotation direction of the detection turntable, the top end of the liquid injection needle is connected to a liquid injection pipe, the liquid injection pipe is connected to an external liquid supply device containing cleaning liquid or reagents, and a heating module is further arranged on the test bench, the liquid injection needle is arranged on the heating module, and the liquid injection pipe is arranged in close contact with the heating module.

[0007] By adopting the technical scheme, the injection needle and the injection tube are continuously heated during the cleaning and liquid adding process, so that the cleaning liquid and the reagent are always kept at a constant temperature. This design effectively avoids the change of sample chemical properties caused by temperature fluctuation, thereby improving the stability and accuracy of the spectral detection result. Meanwhile, the reasonable layout of the liquid suction assembly and the injection needle makes the whole cleaning and liquid adding process more efficient and orderly, reduces manual intervention, and improves the automation level.

[0008] Optionally, the heating module comprises a heat-conducting plate and a heating film, the heating film is arranged on the bottom wall of the heat-conducting plate, the top wall of the heat-conducting plate is provided with a spiral coil groove, a plurality of injection tubes are wound in the spiral coil groove along the groove, and a through hole is formed in the middle of the heat-conducting plate, and the liquid inlet ends of the plurality of injection tubes pass through the through hole to the experimental bench and are connected with an external liquid supply device.

[0009] By adopting the technical scheme, the heating film continuously provides heat to the heat-conducting plate during the spectral detection process, and the heat is uniformly transmitted to the injection tube, thereby improving the stability and precision of temperature control, keeping the injection needle and the injection tube at a constant temperature during the delivery of the cleaning liquid or the reagent, effectively reducing the detection result deviation caused by temperature fluctuation, and improving the consistency of the whole cleaning and liquid adding process. At the same time, the design of the spiral coil groove increases the contact area between the injection tube and the heat-conducting plate, further enhances the heat conduction efficiency, and makes the heating temperature of the cleaning liquid or the reagent more uniform.

[0010] Optionally, a magnetic adsorption assembly for adsorbing the magnetic particles in the reaction cup is arranged on the experimental bench, one magnetic adsorption assembly is arranged corresponding to each liquid suction assembly, the magnetic adsorption assembly comprises a mounting frame arranged on the experimental bench and a plurality of magnetic adsorption blocks inserted into the mounting frame, the mounting frame is located on one side of the inner ring of the detection turntable, and the plurality of magnetic adsorption blocks are distributed along the circumference of the detection turntable.

[0011] By adopting the technical scheme, the magnetic adsorption assembly can ensure that the magnetic particles in the reaction cup are stably adsorbed, avoid pollution or interference caused by the movement of the magnetic particles during the liquid suction and injection process, and improve the reliability and precision of the cleaning and liquid adding process.

[0012] Optionally, each liquid suction assembly comprises two liquid suction needles with different lengths, the two liquid suction needles are distributed along the circumference of the detection turntable, and the liquid suction needle near the injection tube is longer and used for sucking the waste liquid at the bottom of the reaction cup.

[0013] By adopting the technical scheme, one shorter liquid suction needle can efficiently suck the upper layer waste liquid, and the other longer liquid suction needle can reach the bottom of the reaction cup, so as to ensure that the residual waste liquid is also effectively removed. The design of the double liquid suction needles makes the waste liquid in the reaction cup be more thoroughly removed, thereby improving the cleaning effect and the accuracy of the subsequent liquid adding operation.

[0014] Optionally, an elastic member is sleeved on the longer liquid suction needle in each liquid suction assembly, the top end of the liquid suction needle slides through the support plate and is connected to the support plate through the elastic member.

[0015] By adopting the above technical scheme, the design of the elastic member enables the liquid suction tube to automatically adjust the position with the change of the height of the reaction cup, ensuring that the liquid suction needle can always accurately reach the bottom of the reaction cup, thereby more thoroughly sucking the waste liquid and improving the cleaning effect and work efficiency. Meanwhile, the existence of the elastic member can also reduce mechanical impact and prolong the service life of the equipment.

[0016] Optionally, a magnetic stirrer is arranged on the experimental bench in a lifting manner corresponding to each liquid injection tube, and the magnetic stirrer is located behind the liquid injection needle along the rotation direction of the detection turntable, and each magnetic stirrer is located between two adjacent magnetic adsorption assemblies.

[0017] By adopting the above technical scheme, after the liquid injection is completed, the magnetic stirrer can quickly rise and be sleeved at the bottom of the reaction cup, and the magnetic stirring function is immediately started, so that the cleaning liquid or reagent is fully mixed with the substances in the reaction cup, improving the uniformity and efficiency of cleaning and liquid adding. Meanwhile, the position design of the magnetic stirrer skillfully avoids the working area of the liquid suction needle, the liquid injection needle and the magnetic adsorption assembly, effectively preventing mutual interference between the components and ensuring smooth operation of the entire cleaning and liquid adding process.

[0018] Optionally, a fixed plate is arranged at the bottom of the experimental bench, a linear guide rail is arranged on the side wall of the fixed plate in a vertical direction, a sliding block is slidably arranged on the linear guide rail, the magnetic stirrer is arranged on the sliding block, a stepping motor is arranged on the side of the fixed plate away from the magnetic stirrer, the output shaft of the stepping motor extends below the magnetic stirrer, a pushing member is sleeved on the end of the output shaft of the stepping motor, and the pushing member is supported at the bottom of the sliding block.

[0019] By adopting the above technical scheme, the stepping motor drives the pushing member to move up and down, thereby driving the sliding block to slide along the linear guide rail, so that the magnetic stirrer can be accurately sleeved at the bottom of the reaction cup when needed to perform stirring operation, improving the automation degree and work efficiency of the cleaning and liquid adding process. Meanwhile, this design avoids the error caused by manual adjustment, ensures the consistency and reliability of each stirring operation, and improves the overall precision of spectral detection.

[0020] Optionally, positioning bolts are arranged on the opposite sides of the sliding block and the fixed plate, a tension spring is connected between the two positioning bolts, and when the tension spring is in a natural state, the sliding block slides to the bottom end of the linear guide rail.

[0021] By adopting the technical scheme, the tension spring between the sliding block and the fixed plate enables the magnetic stirrer to automatically reset to the lowest point in a non-working state, avoids the maintenance difficulty caused by the complex mechanical structure, and improves the stability and reliability of the system.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The continuous heating of the injection needle and the injection tube during the cleaning and liquid adding process is realized, ensuring that the cleaning liquid and reagent are always at a constant temperature. This design effectively avoids the change in sample chemical properties caused by temperature fluctuations, thereby improving the stability and accuracy of the spectral detection results. At the same time, the reasonable layout of the liquid suction assembly and the injection needle makes the entire cleaning and liquid adding process more efficient and orderly, reducing manual intervention and improving the automation level;

[0024] 2. During the spectral detection process, the heating film continuously provides heat to the heat conduction plate and uniformly transmits heat to the injection tube, improving the stability and precision of temperature control, so that the injection needle and the injection tube maintain a constant temperature state during the transportation of cleaning liquid or reagent, effectively reducing the detection result deviation caused by temperature fluctuations, thereby improving the consistency of the entire cleaning and liquid adding process. At the same time, the design of the spiral coil groove increases the contact area between the injection tube and the heat conduction plate, further enhancing the heat conduction efficiency, making the heating temperature of the cleaning liquid or reagent more uniform;

[0025] 3. The magnetic adsorption assembly can ensure that the magnetic particles in the reaction cup are stably adsorbed, avoiding pollution or interference caused by the movement of magnetic particles during liquid suction and injection, thereby improving the reliability and precision of the cleaning and liquid adding process. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0027] Figure 2 is a schematic diagram of the position relationship between the heating film and the heat conduction plate in the embodiment of the present application.

[0028] Figure 3 is a schematic diagram of the connection relationship between the magnetic stirrer and the fixed plate in the embodiment of the present application.

[0029] MARKED FOR EXPLANATION:

[0030] 1, test bench; 11, guide column; 12, mounting plate; 121, rotary motor; 122, screw rod; 13, fixed plate; 131, linear guide rail; 1311, sliding block; 132, stepping motor; 14, positioning bolt; 141, tension spring; 15, liquid collecting box; 2, detection turntable; 21, insertion hole; 3, support plate; 4, liquid suction assembly; 41, liquid suction needle; 411, elastic member; 42, liquid suction tube; 5, liquid injection assembly; 51, liquid injection needle; 52, liquid injection tube; 6, heating module; 61, heat-conducting plate; 611, spiral coil groove; 612, through hole; 62, heating film; 7, magnetic adsorption assembly; 71, mounting frame; 72, magnetic adsorption block; 8, magnetic stirrer; 9, pushing piece; 91, pushing rod; 92, rubber rotating wheel. DETAILED DESCRIPTION

[0031] The following will be described in detail with reference to the accompanying drawings. Figures 1-3 The present application will be further described in detail.

[0032] The present application discloses a constant-temperature full-automatic cleaning and liquid adding module.

[0033] Referring to Figure 1 A constant-temperature full-automatic cleaning and liquid adding module comprises a test bench 1 and a detection turntable 2, the detection turntable 2 is arranged on the test bench 1 and is driven to rotate by a motor, and a plurality of insertion holes 21 for receiving reaction cups are arranged on the detection turntable 2 in a circumferential direction. The test bench 1 is provided with a support plate 3 which is arranged above the detection turntable 2 and is provided with a plurality of liquid suction assemblies 4 in an axial direction, and four liquid suction assemblies 4 are taken as an example in the embodiment, and a liquid injection assembly 5 is arranged on one side of each liquid suction assembly 4. The test bench 1 is further provided with a heating module 6, a magnetic adsorption assembly 7 and a magnetic stirrer 8, the liquid injection assembly 5 is arranged on the heating module 6, one magnetic adsorption assembly 7 is arranged corresponding to each liquid suction assembly 4 and is arranged on one side of an inner ring of the detection turntable 2, and each magnetic stirrer 8 is arranged between two adjacent magnetic adsorption assemblies 7. The liquid suction assemblies 4, the liquid injection assemblies 5 and the magnetic stirrers 8 are arranged in sequence along a rotation direction of the detection turntable 2.

[0034] Referring to Figure 1 In the process of spectrum detection, a reaction cup containing magnetic particles and waste liquid is inserted into the insertion hole 21 on the detection turntable 2, the reaction cup is first rotated to below the first liquid suction assembly 4, the waste liquid in the reaction cup is sucked by the liquid suction assembly 4, then the reaction cup is rotated to below the liquid injection assembly 5 and is injected with sufficient cleaning liquid, and then the reaction cup is rotated to the magnetic stirrer 8 and is shaken and mixed. The reaction cup is continuously rotated to below the next liquid suction assembly 4 and the above-mentioned operations of liquid suction, cleaning liquid supplementing and mixing are repeated twice. Finally, the reaction cup is rotated to below the last liquid suction assembly 4, the liquid injection assembly 5 injects detection reagent into the reaction cup, and then the reagent is mixed, so that the full-automatic cleaning and liquid adding operation is completed.

[0035] Referring to Figure 1Two guide columns 11 are arranged in parallel on the experimental bench 1, and the support plate 3 is parallel to the experimental bench 1 and is sleeved on the two guide columns 11. The top ends of the two guide columns 11 are fixedly arranged with a mounting plate 12, the top of the mounting plate 12 is fixedly arranged with a rotating motor 121, the output shaft of the rotating motor 121 is vertically rotatably arranged through the mounting plate 12, and the bottom end of the output shaft is coaxially fixedly arranged with a lead screw 122, and the lead screw 122 is rotatably arranged through the support plate 3 by threads.

[0036] With reference to Figure 1 and Figure 2 Each liquid suction assembly 4 comprises two liquid suction needles 41 and two liquid suction pipes 42, the liquid suction needles 41 correspond to the liquid suction pipes 42 one by one, the bottom end of the liquid suction needle 41 vertically penetrates the heating module 6 and is inserted into the reaction cup to suck waste liquid, and the liquid suction pipe 42 is connected to the top end of the liquid suction needle 41 and an external waste liquid barrel. The two liquid suction needles 41 are different in length and are distributed along the circumference of the detection turntable 2 and are installed on the support plate 3, and the longer liquid suction needle 41 is sleeved with an elastic element 411, and the elastic element 411 is taken as a compression spring in this embodiment. The compression spring is abutted between the support plate 3 and the liquid suction needle 41.

[0037] With reference to Figure 2 The heating module 6 comprises a heat-conducting plate 61 and a heating film 62. The heat-conducting plate 61 can be a copper plate or an aluminum plate with good heat-conducting performance, and the aluminum plate is taken as an example in this embodiment. The heating film 62 can be a resistance wire heating film or a semiconductor heating film, and both the two kinds of heating films 62 can effectively transfer heat to ensure that the cleaning liquid or reagent in the liquid injection pipe 52 is maintained within a set temperature range. The semiconductor heating film 62 is taken as an example in this embodiment, and the heating film 62 is fixedly arranged on the bottom wall of the heat-conducting plate 61.

[0038] With reference to Figure 1 and Figure 2 The liquid injection assembly 5 comprises a liquid injection needle 51 and a liquid injection pipe 52. The liquid injection needle 51 is insertedly installed on the side wall of the heat-conducting plate 61 and is located behind the liquid suction needle 41. The liquid injection pipe 52 is connected to the top end of the liquid suction needle 41 and an external liquid supply device. The top wall of the heat-conducting plate 61 is provided with a spiral coil groove 611, and a plurality of liquid injection pipes 52 are spirally arranged in the spiral coil groove 611, which helps to increase the contact area of the liquid injection pipe 52 and the heating film 62 and improve the heating efficiency. In addition, a through hole 612 is formed in the middle of the heat-conducting plate 61, the liquid inlet ends of the plurality of liquid injection pipes 52 are arranged to pass through the experimental bench 1 from the through hole 612 and are connected to the external liquid supply device, which is convenient for maintenance and replacement of the liquid injection pipe 52.

[0039] With reference to Figure 1The magnetic adsorption assembly 7 comprises a mounting frame 71 and a plurality of magnetic adsorption blocks 72. The mounting frame 71 is arranged on the inner side of the detection turntable 2 and fixed on the experimental table 1. The plurality of magnetic adsorption blocks 72 are distributed along the circumference of the detection turntable 2 and inserted into the mounting frame 71. In the embodiment, the magnetic adsorption blocks 72 are made of neodymium-iron-boron permanent magnets, which have strong magnetism and high stability and can effectively adsorb the magnetic particles in the reaction cup to prevent the magnetic particles from being sucked into the liquid suction needle 41 with the waste liquid and affecting the subsequent operation.

[0040] With reference to Figure 1 and Figure 3 On the bottom of the experimental table 1, a fixed plate 13 is fixedly arranged corresponding to each magnetic stirrer 8. A vertical linear guide rail 131 is fixedly arranged on the side wall of the fixed plate 13. A sliding block 1311 is slidingly arranged on the linear guide rail 131. The magnetic stirrer 8 is installed on the sliding block 1311. A stepping motor 132 is fixedly arranged on the side of the fixed plate 13 away from the magnetic stirrer 8. The output shaft of the stepping motor 132 penetrates through the fixed plate 13 and extends below the magnetic stirrer 8. A pushing piece 9 is sleeved on the end of the output shaft of the stepping motor 132. In the embodiment, the pushing piece 9 comprises a pushing rod 91 and a rubber rotating wheel 92. One end of the pushing rod 91 is fixedly sleeved on the end of the output shaft of the stepping motor 132. The rubber rotating wheel 92 is rotatably arranged on the other end of the pushing rod 91. The rotating shaft of the rubber rotating wheel 92 is parallel to the output shaft of the stepping motor 132. The rubber rotating wheel 92 is supported on the bottom of the sliding block 1311.

[0041] With reference to Figure 3 When the stepping motor 132 rotates, the pushing piece 9 pushes the sliding block 1311 to move upward along the linear guide rail 131, so as to adjust the height of the magnetic stirrer 8, so that the magnetic stirrer 8 can be accurately sleeved on the bottom of the reaction cup to drive the magnetic particles in the bottom of the reaction cup to rotate and realize the mixing operation.

[0042] With reference to Figure 3 In order to avoid the interference of the magnetic stirrer 8 on the rotation of the detection turntable 2, a positioning bolt 14 is fixedly arranged on the opposite side of the sliding block 1311 and the fixed plate 13. A tension spring 141 is connected between the two positioning bolts 14. When the tension spring 141 is in a natural state, the sliding block 1311 slides to the bottom end of the linear guide rail 131, and the magnetic stirrer 8 is quickly reset.

[0043] With reference to Figure 1 In order to avoid that the liquid droplets are dropped to the experimental table 1 by the liquid suction needle 41 and the liquid injection needle 51 to cause pollution, a liquid collecting box 15 is fixedly arranged below each group of liquid suction needle 41 and liquid injection needle 51 on the experimental table 1, so as to facilitate centralized treatment.

[0044] The implementation principle of the constant-temperature full-automatic cleaning and liquid adding module is: precise control of the cleaning liquid and reagent in the reaction cup is achieved, especially strict management in terms of temperature, ensuring the accuracy of the spectral detection result. First, the heating module 6 continuously heats the liquid injection pipe 52, so that the cleaning liquid and reagent always remain within the set temperature range, eliminating the adverse effects of temperature fluctuations. Second, the reasonable layout of the liquid suction assembly 4 and the liquid injection assembly 5 makes the cleaning and liquid adding process more efficient, reduces manual intervention, and improves the automation level. Finally, the synergistic effect of the magnetic adsorption assembly 7 and the magnetic stirrer 8 ensures uniform mixing in the reaction cup, further improving the detection quality and efficiency.

[0045] The above are preferred embodiments of the present application, but do not limit the protection scope of the present application, therefore: any equivalent changes made in structure, shape, principle, etc. according to the present application should be covered within the protection scope of the present application.

Claims

1. A constant-temperature full-automatic cleaning and liquid-adding module, comprising an experimental table (1) and a detection turntable (2) rotatably arranged on the experimental table (1), a plurality of plug-in holes (21) for accommodating reaction cups are arranged on the detection turntable (2) in a circumferential ring, characterized in that The experimental bench (1) is provided with a support plate (3) which is lifted and lowered, the support plate (3) is located above the detection turntable (2), and a plurality of liquid suction assemblies (4) are arranged along the axial direction of the support plate (3), each liquid suction assembly (4) comprises a liquid suction needle (41) and a liquid suction pipe (42), the bottom end of the liquid suction needle (41) is inserted into the reaction cup in the vertical direction to suck waste liquid, the liquid suction pipe (42) is connected to the top end of the liquid suction needle (41) and an external waste liquid barrel, and one side of each liquid suction needle (41) is provided with a liquid injection needle (51) for injecting cleaning liquid or reagent into the reaction cup, along the direction of rotation of the detection turntable (2), the liquid injection needle (51) is located behind the liquid suction needle (41), the top end of the liquid injection needle (51) is connected to a liquid injection pipe (52), the liquid injection pipe (52) is connected to an external liquid supply device containing cleaning liquid or reagent, and a heating module (6) is further arranged on the experimental bench (1), the liquid injection needle (51) is arranged on the heating module (6), and the liquid injection pipe (52) is arranged in close contact with the heating module (6).

2. The constant temperature full-automatic cleaning and liquid adding module according to claim 1, characterized in that The heating module (6) comprises a heat conduction plate (61) and a heating film (62), the heating film (62) is arranged in close contact with the bottom wall of the heat conduction plate (61), the top wall of the heat conduction plate (61) is provided with a spiral coil groove (611), a plurality of liquid injection pipes (52) are arranged in the spiral coil groove (611) in the form of a groove, and a through hole (612) is formed in the middle of the heat conduction plate (61), the liquid inlet ends of the plurality of liquid injection pipes (52) pass through the through hole (612) and are connected to an external liquid supply device.

3. The constant temperature full-automatic cleaning and liquid adding module according to claim 1, characterized in that A magnetic adsorption assembly (7) for adsorbing the magnetic beads in the reaction cup is arranged on the experimental bench (1), one magnetic adsorption assembly (7) is arranged corresponding to each liquid suction assembly (4), the magnetic adsorption assembly (7) comprises a mounting frame (71) arranged on the experimental bench (1) and a plurality of magnetic adsorption blocks (72) inserted into the mounting frame (71), the mounting frame (71) is located on one side of the inner ring of the detection turntable (2), and the plurality of magnetic adsorption blocks (72) are distributed along the circumferential direction of the detection turntable (2).

4. The constant temperature full-automatic cleaning and liquid adding module according to claim 1, characterized in that Each liquid suction assembly (4) comprises two liquid suction needles (41) of different lengths, the two liquid suction needles (41) are distributed along the circumferential direction of the detection turntable (2), and the liquid suction needle (41) on the side close to the liquid injection pipe (52) is longer, for sucking the waste liquid at the bottom of the reaction cup.

5. The constant temperature full-automatic cleaning and liquid adding module according to claim 4, characterized in that The longer liquid suction needle (41) in each liquid suction assembly (4) is sleeved with an elastic member (411), the top end of the liquid suction needle (41) is slidably arranged through the support plate (3) and connected to the support plate (3) through the elastic member (411).

6. The constant temperature full-automatic cleaning and liquid adding module according to claim 3, characterized in that One magnetic stirrer (8) is arranged corresponding to each liquid injection pipe (52) on the experimental bench (1), along the direction of rotation of the detection turntable (2), the magnetic stirrer (8) is located behind the liquid injection needle (51), and each magnetic stirrer (8) is located between two adjacent magnetic adsorption assemblies (7).

7. The constant temperature full-automatic cleaning and liquid adding module according to claim 6, characterized in that The bottom of the experiment table (1) is provided with a fixed plate (13), the side wall of the fixed plate (13) is provided with a linear guide rail (131) in the vertical direction, a sliding block (1311) is slidably arranged on the linear guide rail (131), the magnetic stirrer (8) is arranged on the sliding block (1311), the side of the fixed plate (13) away from the magnetic stirrer (8) is provided with a stepping motor (132), the output shaft of the stepping motor (132) extends to the lower side of the magnetic stirrer (8), a pushing piece (9) is sleeved on the end of the output shaft of the stepping motor (132), and the pushing piece (9) supports the bottom of the sliding block (1311).

8. The constant temperature full-automatic cleaning and liquid adding module according to claim 7, characterized in that The opposite side of the sliding block (1311) and the fixed plate (13) is provided with a positioning bolt (14), and the two positioning bolts (14) are connected with a tension spring (141), when the tension spring (141) is in a natural state, the sliding block (1311) slides to the bottom end of the linear guide rail (131).

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