Uniform mixing mechanism, uniform mixing module of analyzer and analyzer

Abstract

The utility model provides a blending mechanism, analyzer's blending module and analyzer, the blending mechanism includes blending base plate, blending motor subassembly and blending sleeve subassembly, the blending base plate is provided with the guide rail, blending motor subassembly includes motor and eccentric wheel, motor can drive eccentric wheel to carry out eccentric rotation motion around first direction, blending sleeve subassembly is equipped with the guide rail, blending sleeve subassembly is equipped with the guide rail, blending sleeve subassembly is equipped with the guide rail. The mixing sleeve assembly comprises a reaction cup sleeve support and a reaction cup sleeve arranged on the reaction cup sleeve support, the reaction cup sleeve support is slidably connected to the guide rail, the guide rail extends in the second direction, and the eccentric wheel is arranged on one side of the extension direction of the guide rail; a uniform mixing hole is formed in the reaction cup sleeve support, the eccentric wheel is arranged in the uniform mixing hole, and the reaction cup sleeve support can be forced to reciprocate on the guide rail in the eccentric rotation process of the eccentric wheel; the uniform mixing module of the analyzer comprises the sample plate uniform mixing mechanism, and the analyzer comprises the uniform mixing module. The utility model has better balance, and can reduce the occurrence of liquid splashing.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to a mixing mechanism, a mixing module of an analyzer, and an analyzer. Background Technology

[0002] In the experimental procedure of an immunoassay analyzer, reagents and test samples need to be added to a reaction vessel and thoroughly mixed to ensure that the target analyte in the sample binds to the components in the reagent. Therefore, whether the reagent and sample are thoroughly mixed directly determines the degree of reaction between them, and thus affects the reliability of the test results.

[0003] A current mixing mechanism includes a motor, an eccentric wheel, a connecting rod, a linear guide rail, and an oscillating frame. The eccentric wheel is mounted on the motor's drive shaft, and both ends of the connecting rod are connected to the eccentric wheel and the oscillating frame, respectively. The reaction cup is placed on the oscillating frame, and the motor drives the oscillating frame to reciprocate along the linear guide rail via the eccentric wheel and connecting rod. During high-speed transmission, the inertial force generated by the connecting rod during movement is difficult to balance, increasing the dynamic load on the mechanism. This causes vibration and impact during movement, easily inducing large vortices within the reaction cup, leading to liquid splashing. Utility Model Content

[0004] The primary objective of this invention is to provide a mixing mechanism that offers good balance and reduces splashing.

[0005] The second objective of this invention is to provide a mixing module for an analyzer that includes the above-mentioned mixing mechanism.

[0006] The third objective of this invention is to provide an analyzer that includes the above-mentioned mixing module.

[0007] To achieve the aforementioned first objective, this utility model provides a mixing mechanism, including a mixing base plate, a mixing motor assembly, and a mixing sleeve assembly. The mixing base plate is provided with a guide rail. The mixing motor assembly includes a motor and an eccentric wheel. The motor drives the eccentric wheel to rotate eccentrically around a first direction. The mixing sleeve assembly includes a reaction cup sleeve support and a reaction cup sleeve. The reaction cup sleeve support is slidably connected to the guide rail, and the reaction cup sleeve is disposed on the reaction cup sleeve support. The guide rail extends along a second direction, which is perpendicular to the first direction. The eccentric wheel is disposed on one side of the guide rail's extension direction. The reaction cup sleeve support is provided with a mixing hole, and the eccentric wheel is disposed within the mixing hole. During the eccentric rotation of the eccentric wheel, the reaction cup sleeve support can be forced to reciprocate on the guide rail.

[0008] As can be seen from the above scheme, by setting the eccentric wheel inside the mixing hole, when the eccentric wheel rotates eccentrically, it can force the reaction cup sleeve support to reciprocate on the guide rail, thereby driving the reaction cup sleeve and the reaction cup inside to reciprocate together, so as to achieve the purpose of mixing the liquid in the reaction cup; moreover, the structure of the mixing hole and the eccentric wheel is more suitable for short-distance reciprocating motion, especially when the motor rotates at high speed, it can also ensure its balance and stability, which is beneficial to reduce the splashing of liquid during the mixing process; this embodiment also has the advantages of simple and compact structure and small space occupation.

[0009] A further option is to design the mixing hole as an oblong shape, with the width of the mixing hole parallel to the extension direction of the guide rail, and the length of the mixing hole perpendicular to the extension direction of the guide rail.

[0010] A further solution is to have a clearance fit between the mixing hole and the eccentric wheel in the width direction of the mixing hole; and to have a single-sided clearance K = (L - 2H) / 2 between the eccentric wheel and the mixing hole in the length direction of the mixing hole, where K > 0, L is the center distance of the mixing hole, and H is the eccentricity of the eccentric wheel.

[0011] As can be seen from the above scheme, the above settings help ensure that the eccentric wheel can rotate 360° eccentrically within the mixing hole, thus avoiding jamming.

[0012] A further embodiment includes a bearing sleeve in the mixing sleeve assembly, which is detachably mounted on the reaction cup sleeve support, with the mixing hole located on the bearing sleeve.

[0013] As can be seen from the above scheme, with the above settings, when the wall of the mixing hole is deformed or worn, the bearing sleeve can be replaced in time, and only the bearing sleeve needs to be replaced, which helps to reduce production costs.

[0014] A further embodiment is that the mixing motor assembly also includes a motor base and an eccentric shaft. The motor is connected to the mixing base plate through the motor base. The eccentric shaft includes a straight shaft part and an eccentric part, which are eccentrically set to the straight shaft part. The straight shaft part is connected to the drive shaft of the motor, and an eccentric wheel is sleeved on the eccentric part.

[0015] As can be seen from the above scheme, the eccentric rotation of the eccentric wheel can be achieved through the above settings.

[0016] A further option is that the eccentric wheel is rotatably mounted on the eccentric part, and the eccentric wheel can rotate around the eccentric part, or the eccentric wheel is fixedly connected to the eccentric part.

[0017] As can be seen from the above scheme, by setting an eccentric wheel that can rotate around the eccentric part, it is beneficial to reduce the friction between the eccentric wheel and the mixing hole, thereby reducing wear and extending its service life.

[0018] To achieve the second objective mentioned above, the mixing module of the analyzer provided by this utility model includes a base plate, an up-and-down driving device, and the aforementioned mixing mechanism; both the mixing mechanism and the up-and-down driving device are mounted on the base plate, and the up-and-down driving device can drive the mixing mechanism to reciprocate along a first direction.

[0019] As can be seen from the above scheme, with the above settings, the mixing mechanism can move back and forth along the first direction, which facilitates the reaction cup entering and exiting the reaction cup sleeve of the mixing mechanism.

[0020] A further option is that the mixing module of the analyzer also includes a guide shaft and a guide seat. The guide seat is set on the base plate, the guide shaft extends along a first direction, one end of the guide shaft is fixedly connected to the guide seat, and the other end of the guide shaft is slidably connected to the mixing base plate.

[0021] As can be seen from the above scheme, the above settings are conducive to achieving the guiding function and facilitate the reciprocating movement of the mixing mechanism along the first direction.

[0022] A further embodiment is that the mixing module of the analyzer also includes a position detection component, which includes a detection mounting bracket, a detection element, and a trigger element. The detection mounting bracket is set on the base plate, one of the detection element and the trigger element is set on the detection mounting bracket, and the other of the detection element and the trigger element is set on the mixing base plate and can move synchronously with the mixing base plate. The detection element and the trigger element are set correspondingly along the first direction.

[0023] As can be seen from the above scheme, by setting it up to ensure that the mixing mechanism moves to the correct position, it is beneficial to ensure that the reaction cup enters the reaction cup sleeve to the required depth, which facilitates subsequent mixing operations.

[0024] To achieve the third objective mentioned above, the analyzer provided by this utility model includes a turntable, a limiting sleeve assembly, and a mixing module of the analyzer. The turntable is disposed between the limiting sleeve assembly and the mixing module. In a first direction, there is a preset distance between the turntable and the limiting sleeve assembly. A reaction cup receiving hole is provided on the turntable. The limiting sleeve assembly, the reaction cup receiving hole, and the reaction cup sleeve are correspondingly arranged along the first direction. An up-and-down driving device can drive the reaction cup sleeve to move toward the reaction cup receiving hole.

[0025] As can be seen from the above scheme, with the above settings, the reaction cup is pre-placed in the reaction cup receiving hole of the turntable. The upper and lower drive device can drive the reaction cup sleeve to move towards the reaction cup receiving hole, so that the lower part of the reaction cup enters the reaction cup sleeve. Then the reaction cup sleeve can push the reaction cup upward. Under the stop action of the limiting sleeve assembly, during the mixing process, the upper part of the reaction cup is basically still, while the lower part of the reaction cup swings back and forth around its upper part to mix the liquid in the reaction cup. Attached Figure Description

[0026] Figure 1This is a structural diagram of an embodiment of the mixing mechanism of this utility model.

[0027] Figure 2 This is a structural diagram of the mixing sleeve assembly and guide rail in an embodiment of the mixing mechanism of this utility model.

[0028] Figure 3 This is a structural diagram of the bearing sleeve in an embodiment of the mixing mechanism of this utility model.

[0029] Figure 4 This is a structural diagram of the mixing motor assembly in an embodiment of the mixing mechanism of this utility model.

[0030] Figure 5 This is a structural diagram of the eccentric shaft in an embodiment of the mixing mechanism of this utility model.

[0031] Figure 6 This is a top view of the eccentric wheel and bearing sleeve in an embodiment of the mixing mechanism of this utility model.

[0032] Figure 7 This is a structural diagram of an embodiment of the mixing module of the analyzer of this utility model.

[0033] Figure 8 This is a cross-sectional view of the analyzer of this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 10 - Mixing mechanism;

[0036] 20 - Mixing module;

[0037] 30 - Analyzer, 301 - Rotary table, 302 - Limit sleeve assembly;

[0038] 40-Reaction cup;

[0039] 1-Mixing base plate, 11-Linear bearing, 12-Screw nut;

[0040] 2-Guide rail;

[0041] 3-Mixing motor assembly, 31-Motor, 32-Motor base, 33-Eccentric shaft, 331-Straight shaft part, 332-Eccentric part, 34-Eccentric wheel;

[0042] 4-Mixing sleeve assembly, 41-Reaction cup sleeve support, 42-Reaction cup sleeve, 421-Receiving tank,

[0043] 43-Bearing sleeve, 431-Protrusion, 432-Mixing hole;

[0044] 5-Base plate;

[0045] 6-Up and down drive device, 61-Drive rod;

[0046] 7-Guide shaft;

[0047] 8-Guide seat;

[0048] 9-Position detection component, 91-Detection mounting bracket, 92-Detection element, 93-Trigger element.

[0049] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0050] Example of a mixing mechanism:

[0051] See Figures 1 to 6 The mixing mechanism 10 provided in this embodiment includes a mixing base plate 1, a mixing motor assembly 3, and a mixing sleeve assembly 4.

[0052] The mixing base plate 1 is designed as a fan-shaped structure, and a guide rail 2 is provided on the mixing base plate 1. The guide rail 2 extends along a second direction and is provided on the first side of the mixing base plate 1. The second direction is the Y direction.

[0053] The mixing motor assembly 3 includes a motor 31, a motor base 32, an eccentric shaft 33, and an eccentric wheel 34. The motor 31 is connected to the second side of the mixing base plate 1 via the motor base 32, and the mixing base plate 1 has a through hole. The eccentric shaft 33 is disposed on the second side of the mixing base plate 1 and includes a straight shaft portion 331 and an eccentric portion 332. The eccentric portion 332 is eccentrically positioned relative to the straight shaft portion 331, and the axis of the eccentric portion 332 is parallel to the axis of the straight shaft portion 331. The drive shaft of the motor 31 passes through the through hole and connects to the straight shaft portion 331, and the straight shaft portion 331 is coaxial with the drive shaft. The eccentric wheel 34 is sleeved on the eccentric portion 332 and is disposed on one side of the guide rail 2 in the extending direction.

[0054] The motor 31 drives the eccentric wheel 34 to rotate eccentrically around a first direction via the eccentric shaft 33. The first direction is perpendicular to the second direction and parallel to the axial direction of the drive shaft; the first direction is the Z-direction. Specifically, when the motor 31 drives the eccentric shaft 33 to rotate around the drive shaft, it can drive the eccentric wheel 34 to rotate eccentrically, that is, the eccentric wheel 34 can rotate eccentrically around the straight shaft portion 331 and the drive shaft. Since the eccentric wheel 34 is sleeved on the eccentric portion 332 and is coaxially arranged with the eccentric portion 332, the eccentric distance H of the eccentric wheel 34 is equal to the distance from the axis of the eccentric portion 332 to the axis of the straight shaft portion 331.

[0055] The mixing sleeve assembly 4 includes a reaction cup sleeve support 41 and a reaction cup sleeve 42. The reaction cup sleeve support 41 is slidably connected to the guide rail 2, and the reaction cup sleeve 42 is extended along a first direction and disposed on the reaction cup sleeve support 41. The reaction cup sleeve 42 has a receiving groove 421 for accommodating the reaction cup 40, and the receiving groove 421 has a slot at one end in the first direction.

[0056] A mixing hole 432 is provided on the reaction cup sleeve support 41, preferably an oblong hole. The mixing hole 432 includes a connecting hole portion and two semi-circular hole portions, which are symmetrically connected to the two ends of the connecting hole portion. The center distance L of the mixing hole 432 is equal to the center distance between the two semi-circular hole portions. The length of the mixing hole 432 is greater than its width. The width direction of the mixing hole 432 is parallel to the extension direction of the guide rail 2, and the length direction of the mixing hole 432 is perpendicular to the extension direction of the guide rail 2; that is, the length of the mixing hole 432 extends along a third direction, which is perpendicular to both the first and second directions, and is the X-direction.

[0057] In the width direction of the mixing hole 432, the mixing hole 432 is clearance-fitted with the eccentric wheel 34. Preferably, the width of the mixing hole 432 is equal to the outer diameter of the eccentric wheel 34. In the length direction of the mixing hole 432, the length of the mixing hole 432 is greater than the outer diameter of the eccentric wheel 34.

[0058] An eccentric wheel 34 is set inside the mixing hole 432. During the eccentric rotation of the eccentric wheel 34, it can force the reaction cup sleeve support 41 to move back and forth on the guide rail 2, thereby driving the reaction cup sleeve 42 and the reaction cup 40 to move back and forth synchronously to mix the liquid in the reaction cup 40.

[0059] To avoid dead angles during the eccentric rotation of the eccentric wheel 34, the single-sided gap K between the eccentric wheel 34 and the mixing hole 432 in the third direction, i.e., along the length of the mixing hole 432, must satisfy the following formula: K=(L-2H) / 2, K>0, i.e., L>2H, where L is the center distance of the mixing hole 432 and H is the eccentricity of the eccentric wheel 34.

[0060] The moving distance of the reaction cup sleeve support 41 on the guide rail 2 should be greater than 2H. However, in actual operation, the larger L is, the more likely the reaction cup 40 is to splash, so the value of L will not be very large. In this embodiment, L is preferably 3 to 5 mm and H is preferably 1 to 2 mm.

[0061] Combination Figures 1 to 3 As the eccentric wheel 34 exerts force on the wall of the mixing hole 432, deformation or wear will be found on the wall of the mixing hole 432 after a long period of operation.

[0062] To facilitate timely replacement of the mixing orifice 432, the mixing sleeve assembly 4 also includes a bearing sleeve 43. The bearing sleeve 43 is detachably mounted on the reaction cup sleeve support 41, and the mixing orifice 432 is mounted on the bearing sleeve 43. When necessary, the mixing orifice 432 can be replaced by replacing the bearing sleeve 43. Specifically:

[0063] The bearing sleeve 43 is provided with a protrusion 431, which protrudes downward from the bottom wall of the bearing sleeve 43, and a mixing hole 432 is provided through the protrusion 431. The reaction cup sleeve support 41 is provided with a mounting hole, and the bearing sleeve 43 is connected to the reaction cup sleeve support 41 by screws, with the protrusion 431 located in the mounting hole.

[0064] In one embodiment, the eccentric wheel 34 is rotatably mounted on the eccentric portion 332, and the eccentric wheel 34 can rotate around the eccentric portion 332. In this case, the friction between the eccentric wheel 34 and the mixing hole 432 is rolling friction, which helps to reduce the frictional force between the two, thereby reducing the wear of the mixing hole 432 and the eccentric wheel 34, and extending their service life. The eccentric wheel 34 can be a bearing or a roller; there is no limitation on this.

[0065] In another embodiment, the eccentric wheel can be fixedly connected to the eccentric portion, and the eccentric wheel cannot rotate around the eccentric portion. In this case, the friction between the eccentric wheel and the mixing hole is sliding friction. The eccentric wheel can be a bearing or a roller, and there is no limitation on this.

[0066] Example of a mixing module for an analyzer:

[0067] See Figure 7 The mixing module 20 of the analyzer provided in this embodiment includes a base plate 5, an upper and lower driving device 6, and a mixing mechanism 10 as described in the above embodiment.

[0068] The base plate 5 and the mixing base plate 1 are arranged parallel to each other vertically. The mixing mechanism 10 is located on the first side of the base plate 5, and the up-and-down driving device 6 is connected to the second side of the base plate 5. The up-and-down driving device 6 can drive the mixing mechanism 10 to reciprocate along a first direction. The up-and-down driving device 6 is preferably a motor. A lead screw nut 12 is provided on the mixing base plate 1, and the drive rod 61 of the up-and-down driving device 6 passes through the base plate 5 and is threadedly connected to the lead screw nut 12. In other embodiments, the up-and-down driving device can be a pneumatic cylinder or a hydraulic cylinder, which is not limited here.

[0069] The mixing module 20 of the analyzer also includes several guide shafts 7 and several guide seats 8, with each guide shaft 7 and guide seat 8 corresponding to one another. In this embodiment, two guide shafts 7 and two guide seats 8 are used as an example. The two guide shafts 7 are respectively arranged on both sides of the mixing base plate 1 along its length direction. The guide shafts 7 extend along a first direction, that is, along the Z direction. The guide seats 8 are arranged on the base plate 5 and are arranged in a corresponding manner to the guide shafts 7 along the first direction. One end of the guide shaft 7 is fixedly connected to the guide seat 8, and the other end of the guide shaft 7 is slidably connected to the mixing base plate 1.

[0070] To reduce friction between the guide shaft 7 and the mixing base plate 1, a linear bearing 11 is provided on the mixing base plate 1, and the guide shaft 7 is slidably inserted into the linear bearing 11.

[0071] The mixing module 20 of the analyzer also includes a position detection component 9, which includes a detection mounting frame 91, a detection element 92, and a trigger element 93. The detection mounting frame 91 is mounted on the base plate 5 and is located on one side of the mixing base plate 1. One of the detection element 92 and the trigger element 93 is mounted on the detection mounting frame 91, and the other of the detection element 92 and the trigger element 93 is mounted on the mixing base plate 1 and can move synchronously with the mixing base plate 1. The detection element 92 and the trigger element 93 are correspondingly arranged along a first direction. In this embodiment, the detection element 92 is mounted on the detection mounting frame 91, and there is a preset height between the detection element 92 and the base plate 5 in the first direction. The trigger element 93 is mounted on the mixing base plate 1 and moves synchronously with the mixing base plate 1. The detection element 92 can be a displacement sensor, a pressure sensor, a photoelectric sensor, a proximity sensor, etc., and in this embodiment, a displacement sensor is preferred.

[0072] When the up and down driving device 6 drives the mixing mechanism 10 to move along the first direction, and the trigger 93 enters the detection range of the detection element 92, the mixing mechanism 10 reaches the target position, and then the mixing mechanism 10 can perform mixing operation.

[0073] Analyzer Example:

[0074] See Figure 8 and combined Figure 7 The analyzer 30 provided in this embodiment includes a turntable 301, a limiting sleeve assembly 302, and a mixing module 20 of the analyzer described in the above embodiment.

[0075] A turntable 301 is positioned between the limiting sleeve assembly 302 and the mixing module 20, and the turntable 301 can rotate around its own axis. The turntable 301 has multiple reaction cup receiving holes, which are evenly arranged at intervals along the circumference of the turntable 301. The reaction cup receiving holes correspond to the reaction cup sleeve 42 along a first direction.

[0076] In the first direction, there is a preset distance between the turntable 301 and the limiting sleeve assembly 302.

[0077] The up-and-down driving device 6 can drive the reaction cup sleeve 42 of the mixing mechanism 10 to move towards the reaction cup receiving hole, so that the reaction cup 40 in the reaction cup receiving hole enters the reaction cup sleeve 42. Then, the reaction cup sleeve 42 continues to move, and the reaction cup sleeve 42 pushes the reaction cup 40 upward, so that the upper part of the reaction cup 40 abuts against the limiting sleeve assembly 302. At this time, the mixing mechanism 10 can drive the reaction cup sleeve support 41 and the reaction cup sleeve 42 to reciprocate along the second direction, thereby causing the lower part of the reaction cup 40 to swing back and forth around its upper part, so as to achieve the purpose of mixing.

[0078] In summary, this utility model, by placing the eccentric wheel 34 inside the mixing hole 432, forces the reaction cup sleeve support 41 to reciprocate on the guide rail 2 when the eccentric wheel 34 rotates eccentrically. This, in turn, drives the reaction cup sleeve 42 and the reaction cup 40 inside it to reciprocate together, thereby achieving the purpose of mixing the liquid inside the reaction cup 40. Moreover, the structure of the mixing hole 432 and the eccentric wheel 34 is more suitable for short-distance reciprocating motion, especially when the motor is rotating at high speed, it can also ensure its balance and stability, which helps to reduce the splashing of liquid during the mixing process. This embodiment also has the advantages of simple and compact structure and small space occupation.

[0079] Finally, it should be emphasized that the above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mixing mechanism, comprising a mixing base plate, a mixing motor assembly and a mixing sleeve assembly, the mixing base plate is provided with a guide rail, the mixing motor assembly comprises a motor and an eccentric wheel, the motor can drive the eccentric wheel to perform eccentric rotation movement in a first direction, the mixing sleeve assembly comprises a reaction cup sleeve support and a reaction cup sleeve, the reaction cup sleeve support is slidingly connected to the guide rail, and the reaction cup sleeve is arranged on the reaction cup sleeve support, characterized in that: the guide rail extends in a second direction, the second direction is perpendicular to the first direction, and the eccentric wheel is arranged on one side of the extension direction of the guide rail; the reaction cup sleeve support is provided with a mixing hole, and the eccentric wheel is arranged in the mixing hole, and the eccentric wheel can force the reaction cup sleeve support to reciprocate on the guide rail during eccentric rotation movement. 2.The mixing mechanism according to claim 1, characterized in that: the mixing hole is a waist-shaped hole, the width direction of the mixing hole is parallel to the extension direction of the guide rail, and the length direction of the mixing hole is perpendicular to the extension direction of the guide rail. 3.The mixing mechanism according to claim 2, characterized in that: in the width direction of the mixing hole, the mixing hole is in clearance fit with the eccentric wheel; and in the length direction of the mixing hole, the single-side clearance K between the eccentric wheel and the mixing hole is (L-2H) / 2, wherein K>0, L is the center distance of the mixing hole, and H is the eccentric distance of the eccentric wheel. 4.The mixing mechanism according to claim 2 or 3, characterized in that: the mixing sleeve assembly further comprises a bearing sleeve, the bearing sleeve is detachably arranged on the reaction cup sleeve support, and the mixing hole is arranged on the bearing sleeve. 5.The mixing mechanism according to claim 4, characterized in that: the mixing motor assembly further comprises a motor base and an eccentric shaft, the motor is connected to the mixing base plate through the motor base, the eccentric shaft comprises a straight shaft part and an eccentric part, the eccentric part is eccentrically arranged with the straight shaft part, the straight shaft part is connected to the driving shaft of the motor, and the eccentric wheel is sleeved on the eccentric part. 6.The mixing mechanism according to claim 5, characterized in that: the eccentric wheel is rotatably sleeved on the eccentric part, the eccentric wheel can rotate around the eccentric part, or the eccentric wheel is fixedly connected to the eccentric part. a base plate, an up-down driving device and the mixing mechanism according to any one of claims 1 to 6; the mixing mechanism and the up-down driving device are both arranged on the base plate, and the up-down driving device can drive the mixing mechanism to reciprocate in the first direction. 8.The mixing module of the analyzer according to claim 7, characterized in that: the mixing module of the analyzer further comprises a guide shaft and a guide seat, the guide seat is arranged on the base plate, the guide shaft extends in the first direction, one end of the guide shaft is fixedly connected to the guide seat, and the other end of the guide shaft is slidingly connected to the mixing base plate. 9.The mixing module of the analyzer according to claim 7, characterized in that: ​ ​ ​ ​ 7. A mixing module for an analyzer, characterized by: ​ ​ ​ ​ ​ The mixing module of the analyzer further comprises a position detection assembly, the position detection assembly comprising a detection mounting frame, a detection piece and a trigger piece, the detection mounting frame being arranged on the bottom plate, one of the detection piece and the trigger piece being arranged on the detection mounting frame, the other of the detection piece and the trigger piece being arranged on the mixing bottom plate and being capable of moving synchronously with the mixing bottom plate, and the detection piece and the trigger piece being arranged correspondingly along the first direction.

10. An analyser characterised by: The mixing module of the analyzer comprises a rotating disc, a limiting sleeve assembly and the mixing module of any one of claims 7 to 9, the rotating disc being arranged between the limiting sleeve assembly and the mixing module, the rotating disc and the limiting sleeve assembly having a preset distance therebetween in the first direction, the rotating disc being provided with a reaction cup accommodating hole, the limiting sleeve assembly, the reaction cup accommodating hole and the reaction cup sleeve being arranged correspondingly along the first direction, and the up-down driving device being capable of driving the reaction cup sleeve to move towards the reaction cup accommodating hole.

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