Blending device and analyzer

Abstract

The utility model belongs to the technical field of analysis equipment, and discloses a uniform mixing device. The uniform mixing device comprises a driving assembly, a uniform mixing assembly and a rotating assembly; the uniform mixing assembly comprises a rotating seat, a cup seat is arranged on the rotating seat, and the rotating seat and a driving shaft of the driving assembly are eccentrically arranged; the rotary limiting assembly comprises a bearing seat, the bearing seat is provided with a vertical mounting hole and a horizontal mounting hole, the bearing seat is rotatably mounted in the vertical direction through the vertical mounting hole, a limiting shaft is slidably arranged in the horizontal mounting hole, and the other end of the limiting shaft is connected with the rotary seat. According to the uniform mixing device, the rotary limiting assembly is arranged to enable the rotary seat to perform circular motion, so that the agent liquid in the reaction container generates vortex, and a good uniform mixing effect is achieved. In addition, the utility model also discloses an analyzer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of analysis equipment, in particular to a mixing device and an analyzer. BACKGROUND

[0002] In the field of in vitro diagnosis, the sample and reagent need to be fully mixed before being placed in the incubation module for incubation. To avoid cross infection, non-contact mixing is usually used. In the prior art, the eccentric oscillation of the reaction container is used to generate vortex in the container to achieve mixing.

[0003] However, the traditional eccentric oscillation method has poor mixing effect due to small amplitude, and large amplitude is easy to cause liquid splashing. SUMMARY

[0004] Therefore, the present application provides a mixing device and an analyzer, which can form a vortex in the reaction container to achieve good mixing effect and stability, and the reaction liquid is not easy to splash out.

[0005] The mixing device provided by the present application comprises:

[0006] a driving assembly, a mixing assembly and a rotation limiting assembly;

[0007] The mixing assembly comprises a rotating seat, and a cup seat is arranged on the rotating seat.

[0008] The rotation limiting assembly comprises a bearing seat, and the bearing seat is provided with a vertical mounting hole and a horizontal mounting hole.

[0009] As a technical solution, an interference sleeve is arranged in the horizontal mounting hole, and a limiting shaft is slidably arranged in the sleeve.

[0010] As a technical solution, the rotation limiting assembly further comprises a rotation limiting seat and a limiting column, and the limiting column is arranged in the vertical mounting hole through a bearing at the upper end and is arranged in the rotation limiting seat at the lower end.

[0011] As a technical solution, the limiting column comprises an abutting portion, and the abutting portion abuts against the lower end of the bearing.

[0012] As a technical solution, the eccentric amount of the rotating seat and the driving shaft is 1mm to 4mm.

[0013] As a technical scheme, the mixing assembly further comprises a supporting seat, the supporting seat is provided with a first accommodating cavity, a bearing is installed in the first accommodating cavity, and the driving shaft is installed on the inner ring of the bearing in an interference fit.

[0014] As a technical scheme, the mixing assembly further comprises an eccentric block, the bottom of the eccentric block is provided with a fixing cavity, the driving shaft is fixed in the fixing cavity, and the upper end of the eccentric block is provided with an eccentric column.

[0015] As a technical scheme, the rotating seat is provided with a second accommodating cavity, a bearing is installed in the second accommodating cavity, and the eccentric column is installed on the inner ring of the bearing in an interference fit.

[0016] As a technical scheme, the driving assembly comprises a motor, a driving wheel, a driven wheel and a synchronous belt, the driving shaft is connected with the driven wheel, and the rotating shaft of the motor is connected with the driving wheel, so as to drive the mixing assembly to move.

[0017] As a technical scheme, the mixing device further comprises a sensor assembly, the sensor assembly comprises a photoelectric coupler frame, a photoelectric coupler and a photoelectric coupler baffle, the photoelectric coupler frame is fixed on the base plate, the photoelectric coupler is fixed on the photoelectric coupler frame, and the photoelectric coupler baffle is fixed on the outer wall of the eccentric block and at a position corresponding to the photoelectric coupler.

[0018] The application also provides an analyzer comprising the sample mixing device as described above.

[0019] The application has the following beneficial effects: on the one hand, through the cooperation of the eccentric arrangement of the rotating seat and the driving shaft and the rotation limiting assembly, the rotating seat does not rotate 360° together with the eccentric block but performs eccentric circumferential motion, so that the liquid in the reaction container generates vortex, reaches the vortex mixing state and obtains good mixing effect; on the other hand, since the rotation limiting assembly has compact and stable structure, the reaction container is relatively stable during the mixing process, and the liquid is not easy to splash out. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a structural schematic view of the mixing device in an embodiment;

[0021] Figure 2 FIG. 2 is an axial sectional view of the mixing device in an embodiment;

[0022] Figure 3 FIG. 3 is an exploded view of the rotation limiting assembly in an embodiment;

[0023] Figure 4 FIG. 4 is an axial sectional view of the mixing device in an embodiment;

[0024] Figure 5 FIG. 5 is a structural schematic view of the mixing device in an embodiment; Figure 1 FIG. 6 is a schematic view of the operation process of the mixing device shown in FIG. 5;

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Base plate; 2. Drive assembly; 201. Motor; 202. Drive wheel; 203. Synchronous belt; 204. Driven wheel; 205. Drive shaft; 3. Mixing assembly; 301. Support base; 3011. First receiving cavity; 302. Eccentric block; 3021. Fixed cavity; 3022. Eccentric column; 30221. Positioning part; 303. Rotating seat; 3031. Second receiving cavity; 3032. Positioning ring; 3033. Ring piece; 304. Cup holder; 3041. Base; 3042. Cup body; 4. Rotation limiting assembly; 401. Rotation limiting seat; 402. Bearing seat; 4021. Vertical mounting hole; 4022. Horizontal mounting hole; 4023. Ring column; 403. Limiting column; 4031. Abutment part; 404. Limiting shaft; 405. Sleeve; 5. Sensor assembly. Detailed Implementation

[0027] The present application will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present application, but the embodiments are not intended to limit the present application.

[0028] Example 1

[0029] A mixing device, such as Figure 1 As shown, it includes a substrate 1, a driving assembly 2, a mixing assembly 3, and a rotating assembly 4; combined with Figure 2 The driving component 2 includes a motor 201 and a drive shaft 205. The drive shaft 205 is connected to the mixing component 3 and drives the mixing component 3 to move.

[0030] In this embodiment, combined with Figure 2 The drive assembly 2 also includes a drive wheel 202, a driven wheel 204 and a synchronous belt 203. The motor 201 shaft is connected to the drive wheel 202. One end of the drive shaft 205 is connected to the driven wheel 204 and the other end is connected to the mixing assembly 3, thereby driving the mixing assembly 3 to move. The drive assembly 2 accelerates according to a certain transmission ratio to meet different mixing requirements.

[0031] In some embodiments, the motor 2 shaft is directly connected to the mixing component 3, driving the mixing component 3 to move.

[0032] like Figure 2As shown, the mixing assembly 3 comprises a support seat 301, an eccentric block 302, a rotating seat 303 and a cup seat 304, wherein the support seat 301 is provided with a first accommodating cavity 3011, two bearings are installed in the first accommodating cavity 3011 and located at the upper end and the lower end of the first accommodating cavity 3011 respectively, and the driving shaft 205 is installed on the inner ring of the two bearings in an interference fit. The bottom of the eccentric block 302 is provided with a fixing cavity 3021, the upper end of the driving shaft 205 is installed in the fixing cavity 3021 and fixed by a screw, the upper end of the eccentric block 302 is provided with an eccentric column 3022, and the eccentric column 3022 is provided with a positioning part 30221. The rotating seat 303 is provided with a second accommodating cavity 3031, two bearings are installed in the second accommodating cavity 3031 and located at the upper end and the lower end of the second accommodating cavity 3031 respectively, a positioning ring 3032 is arranged between the two bearings, the eccentric column 3022 is installed on the inner ring of the two bearings and the positioning ring 3032 in an interference fit, the outer diameter of the eccentric column positioning part 30221 is greater than the inner diameter of the bearing, and the eccentric column positioning part 30221 is used for abutting against the bearing located at the lower end of the second accommodating cavity 3031, and the bearing located at the upper end of the second accommodating cavity 3031 is abutted and positioned by the screw fixed to the top of the eccentric column 3022; the rotating seat 303 is further provided with a ring piece 3033 which is fixed to the bottom of the rotating seat 303 by a screw and is used for further abutting against the bearing located at the lower end of the second accommodating cavity 3031. The cup seat 304 comprises a base 3041 and a cup body 3042, the base 3041 and the cup body 3042 are integrally formed, and the base 3041 is fixedly connected with the rotating seat 303 by a screw.

[0033] In combination Figure 4 , the rotating seat 303 is arranged eccentrically with the driving shaft 205, that is, the central axis A1 of the rotating seat 303 is parallel to but not coincident with the driving axis A2, and the eccentric amount d is 1mm to 4mm. The central axis A1 of the rotating seat 303 is the central axis of the cup body 3042, that is, the central axis of the eccentric column 3022, and the driving axis A2 is the central axis of the eccentric block fixing cavity 3021; therefore, the distance between the central axis of the eccentric column 3022 of the eccentric block and the central axis of the eccentric block fixing cavity 3021 is 1mm to 4mm.

[0034] However, single eccentric rotation cannot form a vortex, so the rotating limiting assembly 4 is used to make the reaction container perform a circular motion and thus make the reagent liquid produce a vortex, so as to obtain a good mixing effect.

[0035] In combination Figure 2 and Figure 3, the rotation limiting assembly 4 comprises a rotation limiting seat 401, a bearing seat 402, a limiting column 403 and a limiting shaft 404. The rotation limiting seat 401 is fixed on the base plate 1, the bearing seat 402 is respectively provided with a vertical mounting hole 4021 and a horizontal mounting hole 4022, two bearings are mounted in the vertical mounting hole 4021 and located at the upper end and the lower end of the vertical mounting hole 4021 respectively, the limiting column 403 is interference fitted on the inner ring of the two bearings at the upper end, and the lower end of the limiting column 403 is mounted in the rotation limiting seat 401, and the corresponding rotation limiting seat 401 is provided with a hole matching the lower end of the limiting column 403; the limiting column 403 is further provided with an abutting portion 4031 abutting the bearing located at the lower end of the vertical mounting hole 4021; the bearing located at the upper end of the vertical mounting hole 4021 is fixed by a screw; the bearing seat 402 is provided with a ring column 4023 extending horizontally into the vertical mounting hole 4021, and the ring column 4023 is located between the two bearings for positioning the two bearings. A sleeve 405 is interference fitted in the horizontal mounting hole 4022, a limiting shaft 404 is slidingly arranged in the sleeve 405, and the other end of the limiting shaft 404 is fixedly connected with the rotating seat 303.

[0036] In combination Figure 5 During the mixing process, the rotation limiting assembly 4 makes the rotating seat 303 not rotate 360° with the eccentric block 302, but makes it perform eccentric circular motion, so that the liquid in the reaction container generates vortex, and good mixing effect is obtained; during the mixing process, the reaction container moves stably, and the liquid is not easy to splash out.

[0037] In this embodiment, the mixing device further comprises a sensor assembly 5, which comprises a photocoupler frame, a photocoupler and a photocoupler baffle. The photocoupler frame is fixed on the base plate 1, the photocoupler is fixed on the photocoupler frame, and the photocoupler baffle is fixed on the outer wall of the eccentric block 302 corresponding to the photocoupler.

[0038] Embodiment 2

[0039] An analyzer comprises the sample mixing device in embodiment 1, the rotating seat 303 is eccentrically arranged with the driving shaft 205, the rotation limiting assembly 4 is arranged to make the rotating seat 303 not perform 360° rotation motion with the eccentric block but perform circular motion, so that the liquid in the reaction container generates vortex to obtain good mixing effect, and due to the compact and stable structure, the reaction container does not need to be shaken during the mixing process, so that the reaction container moves stably during the mixing process, and the liquid is not easy to splash out.

Claims

1. A mixing device, characterized by The utility model relates to a mixing device, including: Driving assembly (2), mixing assembly (3) and rotation limiting assembly (4); The mixing assembly (3) includes the rotation seat (303), be equipped with cup seat (304) on the rotation seat (303), the rotation seat (303) with the eccentricity of driving shaft (205) of driving assembly (2) is arranged, The rotation limiting assembly (4) includes bearing seat (402), bearing seat (402) is equipped with vertical mounting hole (4021) and horizontal mounting hole (4022) respectively, bearing seat (402) is rotatably installed in vertical direction through vertical mounting hole (4021), a limiting shaft (404) is slidably arranged in horizontal mounting hole (4022), the other end of limiting shaft (404) is connected with rotation seat (303).

2. The blending device of claim 1, wherein, The horizontal mounting hole (4022) is provided with a sleeve (405) in excess, a limiting shaft (404) is slidably arranged in the sleeve (405).

3. The blending device of claim 1, wherein, The rotation limiting assembly (4) further includes rotation limiting seat (401) and limiting column (403), the upper end of limiting column (403) is installed in vertical mounting hole (4021) through bearing, and the lower end is installed in rotation limiting seat (401).

4. The blending device of claim 3, wherein, The limiting column (403) contains abutting portion (4031), and the abutting portion (4031) abuts the lower end of bearing.

5. The blending device of claim 1, wherein, The eccentricity of rotation seat (303) and driving shaft (205) is 1mm to 4mm.

6. The blending device of claim 1, wherein, The mixing assembly (3) further includes support seat (301), the support seat (301) is equipped with first accommodating cavity (3011), bearing is installed in first accommodating cavity (3011), and driving shaft (205) is installed in excess on the inner ring of bearing.

7. The blending device of claim 6, wherein, The mixing assembly (3) further includes eccentric block (302), the bottom of eccentric block (302) is equipped with fixed cavity (3021), driving shaft (205) is fixed in fixed cavity (3021), and the upper end of eccentric block (302) is equipped with eccentric column (3022).

8. The blending device of claim 7, wherein, The rotation seat (303) is provided with second accommodating cavity (3031), bearing is installed in second accommodating cavity (3031), and eccentric column (3022) is installed in excess on the inner ring of bearing.

9. The blending device of claim 1, wherein, The mixing device further includes sensor assembly (5).

10. An analyzer characterized by, The utility model relates to a mixing device, including: Driving assembly (2), mixing assembly (3) and rotation limiting assembly (4).

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