Vortex oscillation blending device

Abstract

The utility model relates to the field of laboratory automatic detection, in particular to a vortex oscillation blending device, which comprises a base for fixing the device, an oscillation component for realizing a vortex oscillation blending function, and a driving component for providing driving force for the oscillation component, the placing frame assembly is used for placing the uniform mixing container and is connected with an oscillation mounting plate of the oscillation assembly, the oscillation assembly further comprises a first crankshaft and a second crankshaft, and the main shaft axes of the first crankshaft and the second crankshaft and the connecting rod shaft axes of the first crankshaft and the second crankshaft are eccentrically arranged. According to the vortex oscillation uniform mixing device, the uniform mixing container can be always kept not rotating when being driven to perform vortex oscillation uniform mixing, the uniform mixing container restores to the initial position and the initial state when the vortex oscillation uniform mixing device stops, and the position of each point on the uniform mixing container can be rapidly and accurately positioned through post-treatment to collect liquid in the container.

Description

Technical Field

[0001] The utility model relates to the field of laboratory automation detection, in particular to a vortex oscillation mixing device. Background Art

[0002] Vortex oscillators are commonly used in laboratories and in vitro diagnostic instruments. By spinning test tubes, centrifuge tubes, or multiwell plates at high speed, they create a vortex flow within the container, rapidly mixing the liquid or sample. This mixing method is more efficient and thorough than manual operation, eliminating the potential errors associated with manual mixing.

[0003] Some existing technologies fail to prevent the mixing container from rotating during vortexing, causing it to continue moving even after mixing stops. For non-circular containers, such as multiwell plates, this also prevents them from returning to their original position after vortexing, making them difficult to use in automated instruments.

[0004] Existing technologies include a utility model patent with patent announcement number CN219836401U and the name “Vortex Mixer and Automation Equipment”, which discloses: This utility model relates to the technical field of single-tube vortex mixing instruments, and in particular, to a vortex mixer and automation equipment. The vortex mixer includes: a stepper motor, an eccentric mechanism, and an optical coupler detection component; the output shaft of the stepper motor is connected to the eccentric mechanism, and the rotation of the stepper motor drives the eccentric mechanism to rotate eccentrically. The eccentric mechanism has a receiving cavity for placing a sample container to be mixed, and the optical coupler detection component is arranged on the eccentric mechanism, and the optical coupler detection component is connected to the stepper motor signal. The above patent proposes a solution for controlling the mixing container to restore its initial position after vortex oscillation mixing, but this part of the technology cannot always keep the mixing container from performing circular motion around its own axis relative to its initial state during the entire mixing process, or the structure used to maintain the mixing posture of the container is too bloated, and there are problems with installation and maintenance, including the service life of the device. Summary of the Invention

[0005] In response to the above-mentioned problems existing in the prior art, the present application proposes a vortex oscillation mixing device with compact structure, high reliability, and the ability to always maintain the original posture of the mixing container during vortex oscillation mixing.

[0006] In order to achieve the above technical effects, the present invention is implemented through the following technical solutions:

[0007] A vortex oscillation mixing device includes a base for fixing the device, an oscillation component for achieving the vortex oscillation mixing function, a drive component for providing driving force for the oscillation component, and a placement rack component for placing a mixing container and connected to an oscillation mounting plate of the oscillation component;

[0008] The oscillation assembly further includes a first crankshaft, a second crankshaft, a first bearing, a second bearing, and an optical coupling baffle. The oscillation mounting plate is disposed above the base. The oscillation mounting plate is provided with the first crankshaft and the second crankshaft. The first crankshaft is connected to the first bearing, and the second crankshaft is connected to the second bearing.

[0009] The main shaft axes of the first crankshaft and the second crankshaft are eccentrically arranged with respect to the connecting rod shaft axes of the first crankshaft and the second crankshaft.

[0010] Furthermore, the number of the first crankshafts is one, the number of the second crankshafts is two, the main axis of the first crankshaft and the main axis of the second crankshaft are fixed on the base plate, the center distance between them is equal to the distance between the axis of the first crankshaft connecting rod and the axis of the second crankshaft connecting rod and the connection point of the oscillation mounting plate, the crankshaft radii of the first crankshaft and the second crankshaft are equal, and these four points form a parallelogram crank-connecting rod mechanism with equal opposite sides; in the parallelogram crank-connecting rod mechanism, the first crankshaft and the second crankshaft serve as cranks, and the two second crankshafts are virtually constrained to each other, and the line connecting any two points on the oscillation mounting plate serving as connecting rods will never produce an angular offset relative to the base plate serving as a frame.

[0011] Furthermore, an optical coupler baffle is also provided on the oscillation mounting plate.

[0012] Furthermore, the base includes a bottom plate, a pillar, an optical coupler mounting plate and an optical coupler, the pillar is fixed below the bottom plate, the optical coupler mounting plate is fixed on the bottom plate, and the optical coupler is fixed on the optical coupler mounting plate.

[0013] Furthermore, the inner ring of the first bearing is mounted on the connecting rod journal and the main shaft journal of the first crankshaft, the inner ring of the first bearing rests on the shoulders on the connecting rod journal and the main shaft journal side of the first crankshaft, and the outer ring of the first bearing is mounted on the oscillation mounting plate; the inner ring of the second bearing is mounted on the connecting rod journal and the main shaft journal of the second crankshaft, the inner ring of the second bearing rests on the shoulders on the connecting rod journal and the main shaft journal side of the second crankshaft, and the outer ring of the second bearing is mounted on the base plate.

[0014] Furthermore, the drive assembly includes a drive motor, a motor mounting plate, a first synchronous wheel, a second synchronous wheel and a synchronous belt. The motor mounting plate is installed on the base plate, the motor processing shaft is installed downward on the motor mounting plate, the second synchronous wheel is fixed on the motor processing shaft, the first synchronous wheel is fixed on the first crankshaft main shaft and installed parallel to the second synchronous wheel, and the synchronous belt is installed on the first synchronous wheel and the second synchronous wheel.

[0015] Furthermore, the placement rack assembly includes a placement rack and a mixing container, the placement rack is installed on the oscillation mounting plate, and the mixing container is placed in the placement rack.

[0016] The advantages of the present invention are:

[0017] Unlike the existing technology which can only ensure that the mixing container can return to its original state after it stops moving, the utility model can keep the mixing container from rotating when it is driven to perform vortex oscillation mixing. When the vortex oscillation mixing device stops, the mixing container returns to its original position and initial state. Post-processing can quickly and accurately locate every point on the mixing container to collect the liquid in the container.

[0018] The vortex oscillation mixing device applied for in the utility model uses standard bearings and a finely machined crankshaft to perform vortex mixing work. Compared with other solutions that use cam mechanisms or eddy current principles for driving, it is more convenient to install, has a compact structure, and is highly reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an axonometric view of the vortex mixing device.

[0020] Figure 2 This is an exploded view of the vortex mixing device.

[0021] Figure 3 It is a local cross-sectional view of the eccentric oscillation structure.

[0022] Figure 4 This is the operating principle diagram of the eccentric oscillation structure.

[0023] Figure 5 Schematic diagram of the three-dimensional structure of the active crankshaft.

[0024] Figure 6 Schematic diagram of the three-dimensional structure of the driven crankshaft.

[0025] Among them, 1-base, 11-bottom plate, 12-pillar, 13-optical coupler mounting plate, 14-optical coupler, 2-oscillation assembly, 21-oscillation mounting plate, 22-first crankshaft, 23-second crankshaft, 24-first bearing, 25-second bearing, 26-optical coupler baffle, 3-drive assembly, 31-drive motor, 32-motor mounting plate, 33-first synchronous wheel, 34-second synchronous wheel, 35-synchronous belt, 4-placement rack assembly, 41-placement rack, 42-mixing container. DETAILED DESCRIPTION

[0026] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process. However, the protection scope of the present invention is not limited to the following embodiment.

[0027] It should be pointed out that all directional indications in the embodiments of the present invention (such as two sides, edges, up, down, left, right, front, back, middle, top, bottom, tail, axial, radial...) are only used to explain the relative position relationship, movement state, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] Example 1

[0029] like Figure 1-Figure 3 As shown, a vortex oscillation mixing device includes a base 1 for fixing the device, an oscillation component 2 for achieving the vortex oscillation mixing function, a driving component 3 for providing driving force for the oscillation component 2, and a placement rack component 4 for placing a mixing container 42 and connected to the oscillation mounting plate 21 of the oscillation component 2;

[0030] The oscillation assembly 2 further includes a first crankshaft 22, a second crankshaft 23, a first bearing 24, a second bearing 25 and an optical coupling baffle 26. The oscillation mounting plate 21 is disposed above the base 1. The oscillation mounting plate 21 is provided with the first crankshaft 22 and the second crankshaft 23. The first crankshaft 22 is connected to the first bearing 24, and the second crankshaft 23 is connected to the second bearing 25.

[0031] The eccentric oscillation structure mainly refers to an eccentric oscillation structure that converts the eccentric rotational motion of the crankshaft into a regular oscillating motion of the driven part by arranging several first crankshafts 22 and second crankshafts 23 with equal crankshaft radii by eccentrically setting the main shaft axis of the first crankshaft 22 and the second crankshaft 23 and the connecting rod axis of the first crankshaft 22 and the second crankshaft 23.

[0032] like Figure 3-Figure 6 As shown, there is one first crankshaft 22 and two second crankshafts 23. The main axis of the first crankshaft 22 and the main axis of the second crankshaft 23 are fixed on the base plate 11. The center distance between them is equal to the distance between the axis of the connecting rod of the first crankshaft 22 and the axis of the connecting rod of the second crankshaft 23 and the connection point of the oscillation mounting plate 21. The crankshaft radii of the first crankshaft 22 and the second crankshaft 23 are equal. These four points form a parallelogram crank-connecting rod mechanism with equal opposite sides; the distance between the axis of the connecting rod of the first crankshaft 22 and the axis of the connecting rod of the two second crankshafts 23 and the connection point of the oscillation mounting plate 21 remains unchanged, and a virtual constraint is introduced into the parallelogram crank-connecting rod mechanism to prevent uncertain motion when the crank is collinear with the frame. In the parallelogram crank-connecting rod mechanism, the first crankshaft 22 and the second crankshaft 23 serve as cranks. The two second crankshafts 23 are virtually constrained to each other, and the line connecting any two points on the oscillation mounting plate 21 serving as the connecting rod never produces an angular offset relative to the base plate 11 serving as the frame.

[0033] like Figure 4As shown, the figure shows the centroid of the oscillation mounting plate 21, the connection point between the second crankshaft 23 connecting rod shaft axis and the oscillation mounting plate 21, the motion trajectory of the second crankshaft 23 connecting rod shaft axis, the connection point between the second crankshaft 23 main shaft axis and the base plate 11 (fixed), the motion trajectory of the centroid of the oscillation mounting plate 21, the connection point between the first crankshaft 22 main shaft axis and the base plate 11 (fixed), the motion trajectory of the first crankshaft 22 connecting rod shaft axis, the connection point between the first crankshaft 22 connecting rod shaft axis and the oscillation mounting plate 21, the connection point between the second crankshaft 23 main shaft axis and the base plate 11 (fixed), the connection point between the second crankshaft 23 connecting rod shaft axis and the oscillation mounting plate 21 and the motion trajectory of the second crankshaft 23 connecting rod shaft axis.

[0034] An optical coupler baffle 26 is also provided on the oscillation mounting plate 21 .

[0035] The base 1 includes a bottom plate 11 , a support 12 , an optical coupler mounting plate 13 and an optical coupler 14 . The support 12 is fixed below the bottom plate 11 , the optical coupler mounting plate 13 is fixed on the bottom plate 11 , and the optical coupler 14 is fixed on the optical coupler mounting plate 13 .

[0036] The inner ring of the first bearing 24 is mounted on the connecting rod journal and the main shaft journal of the first crankshaft 22, the inner ring of the first bearing 24 rests on the shoulders on the connecting rod journal and the main shaft journal side of the first crankshaft 22, and the outer ring of the first bearing 24 is mounted on the oscillation mounting plate 21; the inner ring of the second bearing 25 is mounted on the connecting rod journal and the main shaft journal of the second crankshaft 23, the inner ring of the second bearing 25 rests on the shoulders on the connecting rod journal and the main shaft journal side of the second crankshaft 23, and the outer ring of the second bearing 25 is mounted on the base plate 11.

[0037] The drive assembly 3 includes a drive motor 31, a motor mounting plate 32, a first synchronous wheel 33, a second synchronous wheel 34 and a synchronous belt 35. The motor mounting plate 32 is mounted on the base plate 11, and the motor processing shaft is mounted on the motor mounting plate 32 with the motor processing shaft facing downward. The second synchronous wheel 34 is fixed to the motor processing shaft with a top screw, and the first synchronous wheel 33 is fixed to the main shaft of the first crankshaft 22 with a top screw and is installed parallel to the second synchronous wheel 34. The synchronous belt 35 is installed on the first synchronous wheel 33 and the second synchronous wheel 34.

[0038] The placement rack assembly 4 includes a placement rack 41 and a mixing container 42 . The placement rack 41 is mounted on the oscillation mounting plate 21 , and the mixing container 42 is placed in the placement rack 41 .

[0039] Unlike other solutions that can only guarantee that the mixing container returns to its initial state after stopping, the present invention can prevent the mixing container from rotating while being driven to perform vortex mixing. When the vortex mixing device stops, the mixing container returns to its initial position and initial state. Post-processing can quickly and accurately locate every point on the mixing container to collect the liquid inside. The vortex mixing device uses standard bearings and a precision-machined crankshaft to perform vortex mixing. Compared to other solutions that use cam mechanisms or eddy current principles for drive, it is more convenient to install, compact, and highly reliable.

[0040] Example 2

[0041] like Figures 1-6 As shown, the present application provides a vortex oscillation mixing device, which includes a base 1 for fixing the device, an oscillation component 2 for realizing the vortex oscillation function, a driving component 3 for driving the oscillation component 2, and a mixing component 4 for placing a container.

[0042] As a specific embodiment of the base 1, the base 1 includes a base plate 11, pillars 12, an optocoupler mounting plate 13 and an optocoupler 14. The base plate 11 is fixed on the six pillars 12, the optocoupler mounting plate 13 is fixed on the base plate 11, and the optocoupler 14 is fixed on the optocoupler mounting plate 13.

[0043] As a specific embodiment of the oscillation component 2, the second bearing 25 is installed on the base plate 11, the main journals of the first crankshaft 22 and the second crankshaft 23 pass through the second bearing 25 respectively and place the shoulders of the main shaft side above the second bearing 25, the first bearing 24 is installed on the oscillation mounting plate 21, and the connecting rod journals of the first crankshaft 22 and the second crankshaft 23 pass through the first bearing 24 respectively and place the shoulders of the connecting rod shaft side below the first bearing 24.

[0044] As a specific embodiment of the drive assembly 3, the motor mounting plate 32 is installed on the base plate 11, the drive motor 31 is installed on the motor mounting plate 32, the first synchronous wheel 33 and the second synchronous wheel 34 are respectively installed in parallel on the main shaft of the first crankshaft 22 and the drive shaft of the drive motor 31, and the synchronous belt 35 is installed on the first synchronous wheel 33 and the second synchronous wheel 34.

[0045] As a specific implementation of the placement rack assembly 4 , the placement rack 41 is installed on the oscillation mounting plate 21 , and the mixing container 42 is placed on the placement rack 41 .

[0046] As a specific embodiment of the vortex mixing device,

[0047] The driving motor 31 drives the second synchronous wheel 34 to rotate, and the second synchronous wheel 34 drives the first synchronous wheel 33 to rotate through the synchronous belt 35. The first synchronous wheel 33 drives the first crankshaft 22 to rotate around its own main shaft axis. The distance between the main shaft axis and the connecting rod axis of the first crankshaft 22 and the second crankshaft 23 is x, and the connecting rod shaft of the first crankshaft 22 performs a circular motion with a radius of x around its own main shaft axis. The oscillation mounting plate 21 is indirectly connected to the first crankshaft 22 by the first bearing 24, and follows the first bearing 24 to perform a circular motion with a radius of x. The oscillation mounting plate 21 is indirectly connected to the second crankshaft 23 by the first bearing 24. While performing the circular motion, the oscillation mounting plate 21 drives the second crankshaft 23 to rotate around its own main shaft axis. At this time, the oscillation mounting plate 21 is driven by the first crankshaft 22 and constrained by the second crankshaft 23, and performs a circular motion with a radius x and does not rotate around the axis center of the cylinder whose side coincides with the main shaft axis of the first crankshaft 22 and the second crankshaft 23. The placement rack 41 is mounted on the oscillation mounting plate 21. The mixing container 42 is placed in the placement rack 41 and performs the same circular motion as the oscillation mounting plate 21. The speed of the circular motion of the mixing container 42 is adjusted by adjusting the rotational speed of the drive motor 31 and the acceleration ratio of the first and second synchronous wheels 33 and 34. The amplitude of the circular motion of the mixing container 42 is adjusted by adjusting the distance x between the main axes of the first and second crankshafts 22 and 23 and the axis of the connecting rod shaft. The liquid in the mixing container 42 is subjected to centrifugal force and undergoes vortex oscillation mixing in the mixing container 42. After the liquid is fully mixed, when the optical coupler baffle 26 blocks the light path of the optical coupler 14, the optical coupler 14 transmits a trigger signal to the drive motor 31, causing the drive motor 31 to stop rotating. The vortex oscillation mixing device stops rotating and returns to its initial position.

[0048] A vortex oscillation mixing device of the present application can drive a mixing container on a placement rack to perform high-frequency oscillation motion by a driving device, while the mixing container itself does not rotate, thereby realizing the vortex oscillation mixing function of the liquid in the mixing container.

Claims

1. A vortex mixing device, characterized in that: It comprises a base (1) for fixing the device, an oscillating assembly (2) for realizing a vortex oscillation mixing function, a driving assembly (3) for providing a driving force for the oscillating assembly (2), and a placement frame assembly (4) for placing a mixing container (42) and connected to an oscillation mounting plate (21) of the oscillating assembly (2); The oscillation assembly (2) further comprises a first crankshaft (22), a second crankshaft (23), a first bearing (24), a second bearing (25) and an optical coupling baffle (26); the oscillation mounting plate (21) is arranged above the base (1); the oscillation mounting plate (21) is provided with the first crankshaft (22) and the second crankshaft (23); the first crankshaft (22) is connected to the first bearing (24), and the second crankshaft (23) is connected to the second bearing (25); The main shaft axes of the first crankshaft (22) and the second crankshaft (23) are eccentrically arranged with respect to the connecting rod shaft axes of the first crankshaft (22) and the second crankshaft (23).

2. A vortex mixing device according to claim 1, characterized in that: The number of the first crankshaft (22) is one, and the number of the second crankshaft (23) is two. The main axis of the first crankshaft (22) and the main axis of the second crankshaft (23) are fixed on the base plate (11). The center distance between the first crankshaft (22) and the connecting rod axis of the second crankshaft (23) is equal to the distance between the connecting rod axis of the first crankshaft (22) and the connecting rod axis of the second crankshaft (23) and the oscillation mounting plate (21). The crankshaft radii of the first crankshaft (22) and the second crankshaft (23) are equal. These four points form a parallelogram crank-connecting rod mechanism with equal opposite sides. In the parallelogram crank-connecting rod mechanism, the first crankshaft (22) and the second crankshaft (23) serve as cranks, and the two second crankshafts (23) are virtual constraints to each other. The line connecting any two points on the oscillation mounting plate (21) serving as connecting rods never produces an angular offset relative to the base plate (11) serving as a frame.

3. A vortex mixing device according to claim 1, characterized in that: An optical coupling baffle (26) is also provided on the oscillation mounting plate (21).

4. A vortex mixing device according to claim 1, characterized in that: The base (1) comprises a bottom plate (11), a support (12), an optical coupler mounting plate (13), and an optical coupler (14); the support (12) is fixed below the bottom plate (11); the optical coupler mounting plate (13) is fixed on the bottom plate (11); and the optical coupler (14) is fixed on the optical coupler mounting plate (13).

5. A vortex mixing device according to claim 1, characterized in that: The inner ring of the first bearing (24) is mounted on the connecting rod journal and the main shaft journal of the first crankshaft (22), the inner ring of the first bearing (24) rests on the shaft shoulder on the connecting rod journal and the main shaft journal side of the first crankshaft (22), and the outer ring of the first bearing (24) is mounted on the oscillation mounting plate (21); the inner ring of the second bearing (25) is mounted on the connecting rod journal and the main shaft journal of the second crankshaft (23), the inner ring of the second bearing (25) rests on the shaft shoulder on the connecting rod journal and the main shaft journal side of the second crankshaft (23), and the outer ring of the second bearing (25) is mounted on the base plate (11).

6. A vortex mixing device according to claim 1, characterized in that: The drive assembly (3) includes a drive motor (31), a motor mounting plate (32), a first synchronous wheel (33), a second synchronous wheel (34) and a synchronous belt (35), wherein the motor mounting plate (32) is mounted on the base plate (11), the motor processing shaft is mounted on the motor mounting plate (32) with the motor processing shaft facing downward, the second synchronous wheel (34) is fixed on the motor processing shaft, the first synchronous wheel (33) is fixed on the main shaft of the first crankshaft (22) and is mounted parallel to the second synchronous wheel (34), and the synchronous belt (35) is mounted on the first synchronous wheel (33) and the second synchronous wheel (34).

7. A vortex mixing device according to claim 1, characterized in that: The placement rack assembly (4) includes a placement rack (41) and a mixing container (42), wherein the placement rack (41) is mounted on the oscillation mounting plate (21), and the mixing container (42) is placed in the placement rack (41).

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