Blending device and analyzer

Abstract

The mixing device comprises a machine frame, a driving assembly, a transmission assembly, a reaction cup base and a guide assembly, the driving assembly is installed on the machine frame and is in transmission connection with the reaction cup base through the transmission assembly, the guide assembly comprises a limiting shaft and a guide block, and the limiting shaft is connected with the guide block through the transmission assembly. The limiting shaft is rotationally connected to the reaction cup base, the guide block is installed on the rack and matched with the limiting shaft, the driving assembly drives the transmission assembly to drive the reaction cup base to move, the reaction cup base drives the limiting shaft to move along the guide block, the limiting shaft can rotate under the guidance of the guide block, and therefore the friction force between the limiting shaft and the guide block is reduced; abrasion can be reduced, an overlarge gap is prevented from being generated between the limiting shaft and the guide block, and therefore the risk of sample liquid splashing is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of analysis equipment, in particular to a mixing device and an analyzer. Background Art

[0002] Analyzers require a mixing device to automatically mix the sample reagents in the reaction cup. Only after the sample reagents in the reaction cup are mixed can they be transferred to the next station. Existing mixing devices often use fixed columns and chutes for positioning and guidance during the mixing process. Long-term operation can cause wear on the fixed columns and chutes, resulting in excessive gaps between the fixed columns and chutes, causing vibration of the mixing unit and the risk of sample splashing. Utility Model Content

[0003] Based on this, it is necessary to provide a mixing device and analyzer, which aims to solve the technical problem that most existing mixing devices use fixed columns and slide grooves for limiting and guiding during the mixing process. Long-term operation will cause wear of the fixed columns and slide grooves, making the gap between the fixed columns and the slide grooves too large, causing the mixing seat to vibrate, thereby posing a risk of sample splashing.

[0004] In the first aspect, the utility model provides a mixing device, which includes a frame, a drive assembly, a transmission assembly, a reaction cup holder and a guide assembly. The drive assembly is installed on the frame, and the drive assembly is connected to the reaction cup holder through the transmission assembly. The guide assembly includes a limit shaft and a guide block. The limit shaft is rotatably connected to the reaction cup holder. The guide block is installed on the frame and cooperates with the limit shaft. The drive assembly drives the transmission assembly to drive the reaction cup holder to move, and the reaction cup holder drives the limit shaft to move along the guide block.

[0005] In one embodiment, the transmission assembly includes:

[0006] an eccentric shaft, rotatably connected to the frame;

[0007] a connecting rod connected to the eccentric shaft and rotatably connected to the reaction cup seat;

[0008] The drive assembly, connected to the eccentric shaft, drives the connecting rod to rotate, thereby enabling the connecting rod to drive the reaction cup holder to move. In one embodiment, the mixing device further includes a first bearing and a second bearing, wherein the outer ring of the first bearing is mounted on the frame, the inner ring of the first bearing is connected to the eccentric shaft, the outer ring of the second bearing is mounted on the reaction cup holder, and the inner ring of the second bearing is connected to the connecting rod.

[0009] In one embodiment, the mixing device further includes a guide assembly, and the rotation circumference of the reaction cup holder is 3 mm-6 mm.

[0010] In one embodiment, two limiting shafts are provided and symmetrically arranged on both sides of the reaction cup seat, and the guide block is arranged between the two limiting shafts.

[0011] In one embodiment, the mixing device further includes a fixing member, which is mounted on the reaction cup holder and rotatably connected to the limiting shaft.

[0012] In one embodiment, the reaction cup holder is provided with a slot hole and an exhaust hole connected to the slot hole. The slot hole is used to place the reaction cup, and the exhaust hole is used to exhaust the air in the slot hole where the reaction cup is inserted.

[0013] In one embodiment, the driving assembly includes a driving motor, a driving wheel, a driven wheel and a belt. The driving motor is mounted on the frame and connected to the driving wheel. The driven wheel is connected to the eccentric shaft. The belt surrounds the driving wheel and the driven wheel.

[0014] In one embodiment, the mixing device further includes an induction plate and a sensor, wherein the induction plate is mounted on the driven wheel, and the sensor is mounted on the frame and is used to sense the induction plate.

[0015] In a second aspect, the present invention also provides an analyzer, which includes a transport mechanism, a sample adding mechanism, an incubation mechanism and a mixing device of any of the above embodiments. The transport mechanism transports the reaction cup to the sample adding mechanism for sample addition, and the transport mechanism can also transport the reaction cup to the incubation mechanism for heating and incubation.

[0016] The implementation of the present invention will have the following beneficial effects:

[0017] The mixing device and analyzer of the present invention are adopted. The driving component of the mixing device is installed on the frame, and the driving component is connected to the reaction cup seat through the transmission component. The guide component includes a limit shaft and a guide block. The limit shaft is rotatably connected to the reaction cup seat, and the guide block is installed on the frame and cooperates with the limit shaft. The driving component drives the transmission component to drive the reaction cup seat to move, and the reaction cup seat drives the limit shaft to move along the guide block, so that the limit shaft can rotate under the guidance of the guide block, thereby reducing the friction between the limit shaft and the guide block, reducing wear, avoiding excessive gap between the limit shaft and the guide block, and avoiding the risk of sample splashing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] in:

[0020] Figure 1 Schematic diagram of an axonometric mixing device in one embodiment.

[0021] Figure 2 for Figure 1 Schematic diagram of the driving assembly, transmission assembly, induction plate and sensor in the mixing device shown.

[0022] Figure 3 for Figure 1 Schematic diagram of the reaction cup holder in the mixing device shown.

[0023] Figure 4 Schematic diagram of the relationship between the rotational diameter and eccentric distance of the reaction cup holder in one embodiment.

[0024] Figure 5 Schematic diagram of a mixing device and a transfer mechanism in one embodiment.

[0025] Reference numerals:

[0026] 1. Frame;

[0027] 2. Drive assembly; 21. Drive motor; 22. Driving pulley; 23. Driven pulley; 24. Belt;

[0028] 3. Transmission assembly; 31. Eccentric shaft; 32. Connecting rod;

[0029] 4. Reaction cup holder; 41. Slot hole; 42. Exhaust hole;

[0030] 5. Guide assembly; 51. Limit shaft; 52. Guide block;

[0031] 6. First bearing; 7. Second bearing; 8. Fixing member; 91. Sensor plate; 92. Sensor;

[0032] 100, reaction cup; 200, transport mechanism; 300, sample adding position; 400, incubation position. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0035] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0036] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0037] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0038] Please combine Figures 1 to 5 Now, the mixing device provided by the utility model is described. The mixing device is used in an analyzer.

[0039] The mixing device includes a frame 1, a drive assembly 2, a transmission assembly 3, a reaction cup holder 4 and a guide assembly 5. The drive assembly 2 is installed on the frame 1. The drive assembly 2 is connected to the reaction cup holder 4 through the transmission assembly 3. The guide assembly 5 includes a limit shaft 51 and a guide block 52. The limit shaft 51 is rotatably connected to the reaction cup holder 4. The guide block 52 is installed on the frame 1 and cooperates with the limit shaft 51. The drive assembly 2 drives the transmission assembly 3 to drive the reaction cup holder 4 to move, and the reaction cup holder 4 drives the limit shaft 54 ​​to move along the guide block 52.

[0040] It can be understood that by setting the above-mentioned guide assembly 5, the limit shaft 51 can rotate under the guidance of the guide block 52, thereby reducing the friction between the limit shaft 51 and the guide block 52, and reducing wear to avoid excessive gap between the limit shaft 51 and the guide block 52, thereby avoiding the risk of sample splashing.

[0041] It should be noted that two limiting shafts 51 are provided, symmetrically arranged on either side of the cuvette holder 4. The drive assembly 2 drives the transmission assembly 3 to move the cuvette holder 4. Because the limiting shafts 51 are rotationally connected to the cuvette holder 4, the two cuvette holders 4 are sandwiched between guide blocks 52 and are respectively in rolling connection with the guide blocks 52, allowing the cuvette holders 4 to drive the limiting shafts 51 to roll along the direction of the guide blocks 52.

[0042] In this embodiment, the transmission assembly 3 includes an eccentric shaft 31, which is rotatably connected to the frame 1; a connecting rod 32, which is connected to the eccentric shaft 31 and rotatably connected to the cuvette holder 4. The drive assembly 2, through its connection with the eccentric shaft 31, drives the connecting rod 32 to rotate, thereby causing the connecting rod 32 to drive the cuvette holder 4 to move. By configuring the eccentric shaft 31 and connecting rod 32, the drive assembly 2 drives the eccentric shaft 31 to cause the connecting rod 32 to rotate eccentrically, causing the connecting rod 32 to drive the cuvette holder 4 to move. The cuvette holder 4 then drives the limiting shaft 51 to move along the guide block 52, thereby preventing the cuvette holder 4 from performing irregular rotational and oscillatory motion, thereby achieving the sample mixing function.

[0043] It should be noted that the eccentric distance between the eccentric shaft 31 and the connecting rod 32 cannot be too large, otherwise, the rotational diameter of the cuvette holder 4 will be large, and a large centrifugal force will be generated in the cuvette 100, which will easily cause liquid splashing.

[0044] In this embodiment, the mixing device further includes a first bearing 6 and a second bearing 7. The outer ring of the first bearing 6 is mounted on the frame 1, and the inner ring of the first bearing 6 is connected to the eccentric shaft 31. The outer ring of the second bearing 7 is mounted on the reaction cup holder 4, and the inner ring of the second bearing 7 is connected to the connecting rod 32. The provision of the first bearing 6 and the second bearing 7 allows the eccentric shaft 31 to rotate relative to the frame 1, and the connecting rod 32 to rotate relative to the reaction cup holder 4.

[0045] Specifically, the drive assembly 2 drives the eccentric shaft 31 to rotate, and the eccentric shaft 31 drives the inner ring of the first bearing 6 to rotate relative to the outer ring of the first bearing 6. The eccentric shaft 31 drives the connecting rod 32 to rotate, and the connecting rod 32 drives the inner ring of the second bearing 7 to rotate relative to the outer ring of the second bearing 7, so that the connecting rod 32 can drive the reaction cup holder 4 to move.

[0046] In one embodiment, if Figure 4 As shown, the rotational diameter of the cuvette holder 4 is 3 mm to 6 mm, and the rotational diameter of the cuvette holder 4 is twice the eccentric distance. In this device, the rotational diameter of the two cuvettes 100 or the cuvette holder 4 is twice the eccentric distance. In actual operation, the eccentric distance X is between 1.5 mm and 3 mm. In practice, the eccentric distance X is 1.5 mm, 2 mm, or 3 mm.

[0047] It should be noted that the eccentric distance is the distance between the axis of the eccentric shaft 31 and the axis of the connecting rod 32 .

[0048] Furthermore, two limiting shafts 51 are provided and symmetrically arranged on both sides of the reaction cup holder 4, and the guide block 52 is arranged between the two limiting shafts 51. In this way, the reaction cup holder 4 can be moved under the restraint of the two limiting shafts 51 and the guide block 52, thereby mixing the reaction cup 100.

[0049] Furthermore, the mixing device also includes a fixing member 8, which is mounted on the reaction cup holder 4 and is rotatably connected to the limiting shaft 51. By providing the fixing member 8, the limiting shaft 51 can be mounted on the reaction cup 100, and the limiting shaft 51 is rotatably connected to the fixing member 8 to achieve rotation of the limiting shaft 51.

[0050] In one embodiment, if Figure 3 As shown, the cuvette holder 4 is provided with a slot 41 and an exhaust hole 42 connected to the slot 41. The slot 41 is used to accommodate the cuvette 100, and the exhaust hole 42 is used to exhaust air within the slot 41 where the cuvette 100 is inserted. When the cuvette 100 is inserted into the slot 41, a certain amount of air is generated between the cuvette 100 and the slot 41. The exhaust hole 42 allows this air to be exhausted through the exhaust hole 42, allowing the cuvette 100 to be smoothly placed in the slot 41. Otherwise, if the air in the slot 41 cannot be exhausted, the cuvette 100 cannot be effectively placed in the slot 41.

[0051] In one embodiment, if Figure 1 and Figure 2 As shown, the drive assembly 2 includes a drive motor 21, a driving pulley 22, a driven pulley 23, and a belt 24. The drive motor 21 is mounted on the frame 1 and connected to the driving pulley 22. The driven pulley 23 is connected to the eccentric shaft 31. The belt 24 surrounds the driving pulley 22 and the driven pulley 23. Specifically, the drive motor 21 drives the driving pulley 22 to rotate, which in turn drives the belt 24 to rotate. The belt 24 drives the driven pulley 23 to rotate, which in turn drives the eccentric shaft 31 to rotate. The eccentric shaft 31 drives the connecting rod 32 to rotate, which in turn drives the reaction cuvette holder 4 to move. The reaction cuvette holder 4 drives the limiting shaft 51 to move along the guide block 52, thereby preventing the reaction cuvette holder 4 from performing irregular rotational and oscillatory motion, thereby achieving sample mixing.

[0052] In this embodiment, the mixing device further includes a sensing plate 91 and a sensor 92. The sensing plate 91 is mounted on the driven wheel 23, while the sensor 92 is mounted on the frame 1 and is used to sense the sensing plate 91. The provision of the sensing plate 91 and sensor 92 enables the cuvette holder 4 to locate its initial position and perform a rotation count. Furthermore, since the sensing plate 91 is mounted on the driven wheel 23, it prevents the device from displaying an error message indicating that the device is operating properly and valid when the driven wheel 23 slips while the driving wheel 22 does not.

[0053] Specifically, the driving motor 21 drives the driving wheel 22 to rotate, the driving wheel 22 drives the belt 24 to rotate, the belt 24 drives the driven wheel 23 to rotate, and the driven wheel 23 drives the induction plate 91 to rotate. When the induction plate 91 rotates one circle with the driven wheel 23, the sensor 92 senses the induction plate 91.

[0054] The present invention also provides an analyzer, which includes a transport mechanism 200, a sample adding mechanism, an incubation mechanism and a mixing device of any of the above embodiments. The transport mechanism 200 transports the reaction cup 100 to the sample adding mechanism for sample adding. The transport mechanism 200 can also transport the reaction cup 100 to the incubation mechanism for heating and incubation.

[0055] In this embodiment, it can be understood that the analyzer of the present invention uses the above-mentioned mixing device, so that the driving component 2 of the mixing device is installed on the frame 1, and the driving component 2 is connected to the reaction cup holder 4 through the transmission component 3. The guide component 5 includes a limit shaft 51 and a guide block 52. The limit shaft 51 is rotatably connected to the reaction cup holder 4, and the guide block 52 is installed on the frame 1 and cooperates with the limit shaft 51. The driving component 2 drives the transmission component 3 to drive the reaction cup holder 4 to move, and the reaction cup holder 4 drives the limit shaft 51 to move along the guide block 52, so that the limit shaft 51 can rotate under the guidance of the guide block 52, thereby reducing the friction between the limit shaft 51 and the guide block 52, and reducing wear to avoid excessive gap between the limit shaft 51 and the guide block 52, thereby avoiding the risk of sample splashing.

[0056] In this embodiment, if Figure 5 As shown, in the mixing device, the two slots 41 on the reaction cup holder 4 are located on the motion trajectory of the transfer mechanism 200. A sample adding position 300 is also provided on the trajectory. The sample adding mechanism is provided at the sample adding position 300 for adding samples, reagents, diluents, etc. to the reaction cup 100. An incubation position 400 is also provided on the trajectory. The incubation mechanism is provided at the incubation position 400 for heating and incubating the mixed samples, reagents, etc.

[0057] The movement trajectory of the reaction cup 100 on the trajectory line of the transport mechanism 200 is as follows: the transport mechanism 200 first grabs the empty reaction cup 100 and places it on the sample adding position 300, adds the sample reagent, etc., then grabs the reaction cup 100 and places it on the mixing device for mixing, and after mixing, grabs the reaction cup 100 and places it on the incubation position 400 for heating and incubation.

[0058] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A mixing device, characterized in that: The mixing device includes a frame, a drive assembly, a transmission assembly, a reaction cup holder and a guide assembly. The drive assembly is installed on the frame, and the drive assembly is connected to the reaction cup holder through the transmission assembly. The guide assembly includes a limit shaft and a guide block. The limit shaft is rotatably connected to the reaction cup holder. The guide block is installed on the frame and cooperates with the limit shaft. The drive assembly drives the transmission assembly to drive the reaction cup holder to move, and the reaction cup holder drives the limit shaft to move along the guide block.

2. The mixing device according to claim 1, characterized in that The transmission assembly comprises: an eccentric shaft, rotatably connected to the frame; a connecting rod connected to the eccentric shaft and rotatably connected to the reaction cup seat; The driving assembly drives the connecting rod to rotate by being connected to the eccentric shaft, so that the connecting rod drives the reaction cup holder to move.

3. The mixing device according to claim 2, characterized in that: The mixing device also includes a first bearing and a second bearing, the outer ring of the first bearing is mounted on the frame, the inner ring of the first bearing is connected to the eccentric shaft, the outer ring of the second bearing is mounted on the reaction cup seat, and the inner ring of the second bearing is connected to the connecting rod.

4. The mixing device according to claim 2, characterized in that: The rotation circle diameter of the reaction cup holder is 3mm-6mm.

5. The mixing device according to claim 1, characterized in that: There are two limiting shafts, which are symmetrically arranged on both sides of the reaction cup seat, and the guide block is arranged between the two limiting shafts.

6. The mixing device according to claim 1, characterized in that: The mixing device further comprises a fixing member, which is mounted on the reaction cup seat and is rotatably connected to the limiting shaft.

7. The mixing device according to claim 1, characterized in that: The reaction cup seat is provided with a slot hole and an exhaust hole communicated with the slot hole. The slot hole is used to place the reaction cup, and the exhaust hole is used to exhaust the air in the slot hole where the reaction cup is inserted.

8. The mixing device according to claim 2, characterized in that: The driving assembly includes a driving motor, a driving wheel, a driven wheel and a belt. The driving motor is installed on the frame and connected to the driving wheel. The driven wheel is connected to the eccentric shaft. The belt surrounds the driving wheel and the driven wheel.

9. The mixing device according to claim 8, characterized in that: The mixing device further comprises an induction plate and a sensor. The induction plate is mounted on the driven wheel, and the sensor is mounted on the frame and is used to sense the induction plate.

10. An analyzer, characterized in that: The analyzer includes a transport mechanism, a sample adding mechanism, an incubation mechanism, and a mixing device according to any one of claims 1 to 9. The transport mechanism transports the reaction cup to the sample adding mechanism for sample adding. The transport mechanism can also transport the reaction cup to the incubation mechanism for heating and incubation.

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