A mixing device for sample tubes

Abstract

This utility model discloses a mixing device for sample tubes, relating to the field of sample tube mixing. It includes a fixed box, a fixed base fixedly mounted on the top of the fixed box, a rotating base rotatably mounted on the outer side of the fixed base, a lower connecting plate fixedly mounted on the top of the rotating base, and threaded rods protruding upwards welded to the four corners of the top of the lower connecting plate. An upper connecting plate is slidably connected to the outer wall of the threaded rods, and a clamping handle for pressing the upper connecting plate is threadedly connected to the outer wall of the threaded rods. Receiving grooves for limiting the position of the sample tubes are formed at the top of the lower connecting plate and the bottom of the upper connecting plate. A swing mechanism connected to the bottom of the lower connecting plate is installed inside the fixed box. This utility model, by setting up a swing mechanism, has higher impact and shear forces compared to rotational mixing, making it easier to mix highly viscous samples.

Description

Technical Field

[0001] This utility model relates to the field of sample tube mixing, specifically a sample tube mixing device. Background Technology

[0002] Mixing the sample tubes is primarily to protect the homogeneity of the samples and ensure the accuracy and reliability of the test results.

[0003] In the prior art, mixing devices for sample tubes are classified into several types according to the type of mixing (e.g., centrifugal mixing). One type is shaking mixing. Existing shaking mixing devices generally use a coaxial rotating shaking mechanism. When this shaking mechanism drives the sample tube to rotate, it generally uses a rotational mixing method. In this way, the sample moves in a circular motion along the tube wall during the rotation. Centrifugal force easily causes the sample to accumulate on the inner wall. For samples with high viscosity, it is difficult to form sufficient convection and shear, resulting in insufficient mixing. Utility Model Content

[0004] The purpose of this invention is to provide a mixing device for sample tubes in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mixing device for sample tubes, comprising a fixed box, a fixed seat fixedly installed on the top of the fixed box, a rotating seat rotatably installed on the outer side of the fixed seat, a lower connecting plate fixedly installed on the top of the rotating seat, threaded rods protruding upwards welded at the four corners of the top of the lower connecting plate, an upper connecting plate slidably connected to the outer wall of the threaded rods, a clamping handle for pressing the upper connecting plate is threadedly connected to the outer wall of the threaded rods, receiving grooves for limiting the sample tubes are formed at the top of the lower connecting plate and the bottom of the upper connecting plate, and a swing mechanism connected to the bottom of the lower connecting plate is installed inside the fixed box.

[0006] As a further embodiment of this utility model: the swing mechanism includes two support seats fixedly installed at the bottom of the inner wall of the fixed box, a synchronous shaft is rotatably installed inside the two support seats, a connecting arm is fixedly installed at both ends of the synchronous shaft, and an arc-shaped toothed plate is fixedly installed at the top end of the connecting arm.

[0007] As a further embodiment of this utility model: the swing mechanism further includes a gear meshing above the arc-shaped toothed plate, and fixed ears are fixedly installed at both ends of the gear, with the top end of the fixed ears fixedly connected to the bottom end of the lower connecting plate.

[0008] As a further embodiment of this utility model: a sliding groove is provided inside the connecting arm, and a movable column is movably connected to the inner wall of the sliding groove. The movable column is fixedly connected to an eccentric position at one end of the rotating disk. Motor frames are fixedly installed at both ends of the fixed box, and a rotary motor is fixedly installed at one end of the motor frame. The output shaft of the rotary motor passes through the motor frame and is coaxially fixedly connected to the center of the rotating disk.

[0009] As a further improvement of this utility model: the outer arc-shaped surface of the arc-shaped toothed plate coincides with the center of the synchronous shaft.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. By setting up a swing mechanism, it has higher impact and shear force than self-rotation mixing, making it easier to mix samples with high viscosity. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0014] Figure 3 For the present utility model Figure 2 Enlarged view of a portion of point A in the middle.

[0015] In the diagram: 1. Fixed box; 2. Fixed seat; 3. Rotating seat; 4. Lower connecting plate; 5. Upper connecting plate; 6. Receiving groove; 7. Threaded rod; 8. Pressing handle; 9. Fixed ear; 10. Gear; 11. Support seat; 12. Synchronous shaft; 13. Connecting arm; 14. Arc-shaped toothed plate; 15. Motor frame; 16. Rotary motor; 17. Rotating disk; 18. Movable column; 19. Slide groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-3In this embodiment of the present invention, a sample tube mixing device includes a fixed box 1, a fixed seat 2 fixedly installed on the top of the fixed box 1, a rotating seat 3 rotatably installed on the outside of the fixed seat 2, a lower connecting plate 4 fixedly installed on the top of the rotating seat 3, threaded rods 7 protruding upwards welded at the four corners of the top of the lower connecting plate 4, an upper connecting plate 5 slidably connected to the outer wall of the threaded rod 7, a pressing handle 8 for pressing the upper connecting plate 5 is threadedly connected to the outer wall of the threaded rod 7, a receiving groove 6 for limiting the sample tube is opened at the top of the lower connecting plate 4 and the bottom of the upper connecting plate 5, and a swing mechanism connected to the bottom of the lower connecting plate 4 is installed inside the fixed box 1.

[0018] In this embodiment: when the sample tube is placed into the receiving groove 6, the upper connecting plate 5 is not connected to the threaded rod 7. After the sample tube is placed, the upper connecting plate 5 is fitted onto the outer wall of the threaded rod 7. At this time, the bottom receiving groove 6 of the upper connecting plate 5 is aligned with the top receiving groove 6 of the lower connecting plate 4. Then, the clamping handle 8 is threaded onto the outer wall of the threaded rod 7 until the clamping handle 8 clamps the upper connecting plate 5. At this time, the position of the sample tube is limited.

[0019] Then, by activating the swing mechanism, the swing mechanism reciprocates, thereby driving the upper connecting plate 5 and the lower connecting plate 4 to reciprocate synchronously, thus achieving the purpose of mixing the liquid inside the sample tube.

[0020] Please refer to this carefully. Figure 2 and Figure 3 The swing mechanism includes two support seats 11 fixedly installed at the bottom of the inner wall of the fixed box 1. A synchronous shaft 12 is rotatably installed inside the two support seats 11. Connecting arms 13 are fixedly installed at both ends of the synchronous shaft 12. An arc-shaped toothed plate 14 is fixedly installed at the top of the connecting arm 13. The swing mechanism also includes a gear 10 meshing with the arc-shaped toothed plate 14. Fixed ears 9 are fixedly installed at both ends of the gear 10. The top of the fixed ears 9 is fixedly connected to the bottom of the lower connecting plate 4. A sliding groove 19 is opened inside one of the connecting arms 13. A movable column 18 is movably connected to the inner wall of the sliding groove 19. The movable column 18 is fixedly connected to one eccentric position of the rotating disk 17. A motor frame 15 is fixedly installed at both ends of the fixed box 1. A rotary motor 16 is fixedly installed at one end of the motor frame 15. The output shaft of the rotary motor 16 passes through the motor frame 15 and is coaxially fixedly connected to the center of the rotating disk 17. The outer arc surface of the arc-shaped toothed plate 14 coincides with the center of the synchronous shaft 12.

[0021] In this embodiment: by starting the rotary motor 16, the rotary motor 16 drives the rotating disk 17 at its output end to rotate. During the rotation of the rotating disk 17, the movable column 18 is driven to rotate. The rotating movable column 18 can squeeze the inner wall of the slide groove 19. At this time, the connecting arm 13 with the slide groove 19 drives another connecting arm 13 to rotate synchronously through the synchronous shaft 12, so that the two connecting arms 13 rotate synchronously back and forth. The connecting arm 13 can drive the arc-shaped toothed plate 14 to rotate synchronously back and forth around the center of the synchronous shaft 12. At this time, the reciprocating arc-shaped toothed plate 14 can drive the gear 10 to rotate back and forth. At this time, the gear 10 can drive the lower connecting plate 4 to swing back and forth through the fixed ear 9, so as to mix the liquid inside the sample tube.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mixing device for sample tubes, comprising a stationary cassette (1), characterized in that A fixed seat (2) is fixedly installed on the top of the fixed box (1). A rotating seat (3) is rotatably installed on the outside of the fixed seat (2). A lower connecting plate (4) is fixedly installed on the top of the rotating seat (3). Threaded rods (7) protruding upwards are welded to the four corners of the top of the lower connecting plate (4). An upper connecting plate (5) is slidably connected to the outer wall of the threaded rod (7). A clamping handle (8) for pressing the upper connecting plate (5) is threadedly connected to the outer wall of the threaded rod (7). A receiving groove (6) for limiting the sample tube is opened at the top of the lower connecting plate (4) and the bottom of the upper connecting plate (5). A swing mechanism connected to the bottom of the lower connecting plate (4) is installed inside the fixed box (1).

2. The sample tube mixing device of claim 1, wherein, The swing mechanism includes two support seats (11) fixedly installed on the bottom of the inner wall of the fixed box (1). A synchronous shaft (12) is rotatably installed inside the two support seats (11). Connecting arms (13) are fixedly installed at both ends of the synchronous shaft (12). An arc-shaped toothed plate (14) is fixedly installed at the top of the connecting arm (13).

3. The sample tube mixing device of claim 2, wherein, The swing mechanism also includes a gear (10) meshing above the arc-shaped toothed plate (14), with fixed ears (9) fixedly installed at both ends of the gear (10), and the top end of the fixed ears (9) being fixedly connected to the bottom end of the lower connecting plate (4).

4. The sample tube mixing device of claim 3, wherein, A sliding groove (19) is provided inside the connecting arm (13). A movable column (18) is movably connected to the inner wall of the sliding groove (19). The movable column (18) is fixedly connected to one end of the rotating disk (17) at an eccentric position. A motor frame (15) is fixedly installed at both ends of the fixed box (1). A rotary motor (16) is fixedly installed at one end of the motor frame (15). The output shaft of the rotary motor (16) passes through the motor frame (15) and is coaxially fixedly connected to the center of the rotating disk (17).

5. The sample tube mixing device of claim 4, wherein, The outer arc surface of the arc-shaped toothed plate (14) coincides with the center of the synchronous shaft (12).

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