Centrifugal extraction device

Abstract

The utility model relates to the technical field of cell centrifugation, in particular to a centrifugal extraction device which comprises a device body, a centrifugal groove is formed in the upper side of the device body in a sunken mode, a driving cavity is formed in the device body and located below the centrifugal groove, a driving motor is installed in the driving cavity, and an output shaft of the driving motor penetrates into the centrifugal groove. A centrifugal disc is horizontally connected into the centrifugal groove, a test tube fixing part is installed on the edge of the centrifugal disc and comprises a fixing ring, the edge of the fixing ring is connected with the edge of the centrifugal disc, at least three fixing pieces are vertically distributed on the lower side of the fixing ring, and an elastic piece is arranged on the inner side of each fixing piece; the upper end of the elastic piece is connected with the inner side of the fixing piece, and a gap is reserved between the lower end and the fixing piece. When the test tube is installed, adjustment is not needed, the fixing ring is directly inserted, and automatic adjustment is achieved by means of the elasticity of the elastic piece.

Description

Technical Field

[0001] The utility model relates to the technical field of cell centrifugation, in particular to a centrifugal extraction device. Background Art

[0002] In cell biology and medical research, centrifugal extraction devices are indispensable tools for separating and extracting various components from cell samples. Cell centrifugation is a basic means of studying the nucleus, mitochondria, Golgi apparatus, lysosomes and microbodies, as well as various macromolecules. It uses the centrifugal force of an object rotating at high speed to cause suspended particles placed in the rotating body to settle or float, thereby concentrating certain particles or separating them from other particles.

[0003] A Chinese utility model patent with announcement number CN208194689U discloses a cell centrifuge device for clinical medicine, including a base and a separation box. Support pads are provided at the four corners of the lower end of the base, and handles are provided in the middle of the two side walls of the base. A power supply and a timer are provided at the lower end of the base. A separation box is provided in the middle of the upper end of the base. A control panel is provided in the middle of the upper end of one side wall of the separation box. The control panel is provided with a display screen, a switch, and a control knob. A box cover is provided at the upper end of the separation box. A rotating shaft, a turntable, a sleeve, and a centrifuge tube are provided in the separation box.

[0004] Although the above-mentioned prior art can realize the convenient movement of the separation box by setting a handle, can realize the timed automatic separation of cells by setting a timer, and can adjust the rotation speed of the turntable as needed by setting a control panel, which is conducive to improving the efficiency of cell separation, the centrifuge tube and the sleeve can only be used in combination, and cannot meet the needs of different types of test tubes, which has limitations. At the same time, in order to be suitable for the use of different test tubes, the prior art sets the sleeve too large, so that the test tube will collide with the sleeve during centrifugation, and there is a risk of the test tube colliding with the sleeve and breaking. Since the sleeve size cannot be adjusted according to demand, when using test tubes of non-standard size or special specifications, it may not be firmly fixed in the existing centrifugal device. This will not only affect the stability and safety of the centrifugation process, but may also lead to inaccurate experimental results or even experimental failure. Utility Model Content

[0005] The purpose of the utility model is to provide a centrifugal extraction device to solve the problem in the prior art that the centrifugal device cannot adjust the sleeve size according to demand, and when using non-standard size or special specification test tubes, they may not be firmly fixed in the existing centrifugal device.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A centrifugal extraction device comprises a device body, wherein a centrifugal groove is recessed on the upper side of the device body, a drive cavity is arranged below the centrifugal groove in the device body, a drive motor is installed in the drive cavity, an output shaft of the drive motor passes through the centrifugal groove, and a centrifugal disk is horizontally connected in the centrifugal groove, a test tube fixing piece is installed at the edge of the centrifugal disk, the test tube fixing piece comprises a fixing ring, the edge of the fixing ring is connected to the edge of the centrifugal disk, at least three fixing plates are vertically distributed on the lower side of the fixing ring, an elastic plate is arranged on the inner side of each fixing plate, the upper end of the elastic plate is connected to the inner side of the fixing plate, and a gap is left between the lower end and the fixing plate.

[0008] A further technical solution is that the elastic piece is arc-shaped, and at least two elastic pieces are provided on the inner side of each fixing piece from top to bottom.

[0009] A further technical solution is that a bottom plate is horizontally arranged on the inner side of the lower end of one of the fixing plates.

[0010] A further technical solution is that a mounting hole is provided near the edge of the centrifugal disc, which passes through the upper and lower sides; a connecting section is provided horizontally on the side of the fixed ring; an insertion rod is provided vertically on the lower side of the end of the connecting section away from the fixed ring; and the insertion rod is movably provided in the mounting hole.

[0011] A further technical solution is that a rectangular rotating block is rotatably arranged in the mounting hole, and an insertion hole is provided on the rotating block that passes through the upper and lower sides. The insertion rod is clamped in the insertion hole, and the rotating block is provided with a rotating shaft on both sides of the left and right sides facing the center of the centrifugal disk. The two rotating shafts are respectively rotatably connected to the hole walls on the opposite sides of the rotating hole.

[0012] A further technical solution is that the lower end of the insertion rod is provided with a sharp portion.

[0013] A further technical solution is that a flip-type cover for closing the centrifugal groove opening is provided on the upper side of the device body, and a transparent area is provided in the middle of the flip-type cover.

[0014] Compared with the prior art, the present invention has at least one of the following beneficial effects: 1. When fixing the test tube, the test tube is inserted from the upper side of the fixing ring. During the insertion process, the test tube is fixed by means of the elastic sheet on the inner side of each fixing sheet touching the outer wall of the test tube, so that the test tube will not shake in the fixing ring when installed in the fixing ring, thereby avoiding collision between the test tube and the fixing ring during centrifugation; 2. With the elastic deformation advantage of the elastic sheet itself, it can adapt to test tubes of various sizes, and no adjustment is required when installing the test tube. It can be directly inserted into the fixing ring and automatically adjusted with the elasticity of the elastic sheet itself; 3. The provision of at least three fixing sheets means that at least three elastic sheets clamp and fix the test tube from three positions of the test tube, thereby improving the stability of clamping and fixing the test tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an overall schematic diagram of a centrifugal extraction device of the present invention.

[0016] Figure 2 This is a schematic diagram of a driving chamber of a centrifugal extraction device of the present invention.

[0017] Figure 3 This is a schematic diagram of a test tube fixing part of a centrifugal extraction device of the present invention.

[0018] Figure 4 for Figure 1 Schematic diagram of the local horizontal section at point A.

[0019] Icon: 1-device body, 2-centrifugal tank, 3-driving chamber, 4-driving motor, 5-centrifugal disc, 6-fixing ring, 7-fixing plate, 8-elastic plate, 9-base plate, 10-mounting hole, 11-connecting section, 12-insertion rod, 13-rotating block, 14-insertion hole, 15-rotating shaft, 16-sharp part, 17-flip cover, 18-transparent area. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] Figures 1 to 4 Shown is an embodiment of the present utility model.

[0022] Example:

[0023] A centrifugal extraction device comprises a device body 1, wherein the upper side of the device body 1 is recessed with a centrifugal tank 2, a drive chamber 3 is provided below the centrifugal tank 2 in the device body 1, a drive motor 4 is installed in the drive chamber 3, the output shaft of the drive motor 4 passes through the centrifugal tank 2, and a centrifugal disk 5 is horizontally connected to the centrifugal tank 2, a test tube fixing member is installed on the edge of the centrifugal disk 5, and the test tube fixing member includes a fixing ring 6, the edge of the fixing ring 6 is connected to the edge of the centrifugal disk 5, and at least three fixing plates 7 are vertically distributed on the lower side of the fixing ring 6, each fixing plate 7 is provided with an elastic plate 8 on the inner side, the upper end of the elastic plate 8 is connected to the inner side of the fixing plate 7, and a gap is left between the lower end and the fixing plate 7. When fixing the test tube, the test tube is inserted from the upper side of the fixing ring 6. During the insertion process, the elastic plate 8 on the inner side of each fixing plate 7 contacts the outer wall of the test tube to fix the test tube, so that the test tube will not shake in the fixing ring 6 when installed in the fixing ring 6, thereby avoiding collision between the test tube and the fixing ring 6 during the centrifugation process. The elastic deformation advantage of the elastic sheet 8 itself can adapt to test tubes of various sizes, and no adjustment is required when installing the test tube. It can be directly inserted into the fixing ring 6 and automatically adjusted by the elasticity of the elastic sheet 8. The provision of at least three fixing sheets 7 means that at least three elastic sheets 8 clamp and fix the test tube at three positions on the test tube, thereby improving the stability of the test tube clamping.

[0024] The elastic piece 8 is curved, and each fixing piece 7 is provided with at least two elastic pieces 8 from top to bottom on its inner side. Due to the curved shape of the elastic pieces 8, when a test tube is inserted, the bottom of the test tube contacts the curved surface of the elastic piece 8, squeezing the elastic piece 8 and deforming the elastic piece 8 toward the fixing piece 7, thereby generating an elastic squeezing force on the test tube. Furthermore, with at least two elastic pieces 8 on each fixing piece 7, the fixing piece 7 can simultaneously maintain multiple clamping points on a single side when securing the test tube. This facilitates a more uniform clamping force and prevents the test tube from shifting during the securing process.

[0025] A bottom plate 9 is horizontally arranged on the inner side of the lower end of one of the fixing plates 7. By arranging the bottom plate 9, the bottom of the test tube can be supported to prevent the test tube from flying out during centrifugation.

[0026] The position of centrifugal disk 5 near the edge is provided with mounting holes 10 that run through both sides up and down, and the side level of fixing ring 6 is provided with connecting section 11, and connecting section 11 is vertically provided with insertion rod 12 on the lower side of one end away from fixing ring 6, and insertion rod 12 is movably arranged in mounting hole 10. Because test tube needs to tilt along with rotation to avoid internal cell suspension from throwing out test tube during centrifugal process, the matching form of insertion rod 12 and mounting hole 10 is adopted. When installing test tube, first test tube is fixed on fixing ring 6 and fixing plate 7, and then insertion rod 12 is inserted in mounting hole 10. When test tube tilts along with centrifugal, fixing ring 6 is hung on the edge of centrifugal disk 5 by means of insertion rod 12 and mounting hole 10, so just can allow test tube to tilt and can not break away from centrifugal disk 5.

[0027] A rectangular rotating block 13 is rotatably mounted within the mounting hole 10. The rotating block 13 is provided with an insertion hole 14 extending from top to bottom. An insertion rod 12 is secured within the insertion hole 14. The rotating block 13 is provided with rotating shafts 15 on both the left and right sides of the side facing the center of the centrifugal disk 5. The two rotating shafts 15 are rotatably connected to the walls of the rotating hole on opposite sides. Because the insertion rod 12 needs to wiggle within the mounting hole 10, a certain clearance between the mounting hole 10 and the insertion rod 12 is generally required. This results in the insertion rod 12 colliding with the walls of the mounting hole 10 when the centrifugal disk 5 is started and stopped, causing the test tube to wiggle unnecessarily. By providing a rotating block 13 connected to the insertion rod 12 to replace the insertion rod 12 rotating in the rotating hole, the insertion hole 14 and the insertion rod 12 are connected by a clamping device, so that the insertion rod 12 can be tightly connected to the insertion hole 14, thereby preventing the insertion rod 12 from shaking in the insertion hole 14. At the same time, the rotating block 13 can cooperate with the insertion rod 12 to rotate in the mounting hole 10, so that the test tube can be tilted during the centrifugation process.

[0028] The lower end of the insertion rod 12 is provided with a sharp portion 16. By providing the sharp portion 16, when the insertion rod 12 is inserted into the insertion hole 14, it is smoother.

[0029] The upper side of the device body 1 is provided with a flip cover 17 for closing the notch of the centrifugal tank 2. A transparent area 18 is provided in the middle of the flip cover 17. The flip cover 17 can protect the entire centrifugal tank 2 during the centrifugation process, while the transparent area 18 allows for easy observation of the entire centrifugation process.

[0030] Although the present invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and implementations may be devised by those skilled in the art that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, the drawings, and the claims, various variations and modifications may be made to the components and / or layout of the subject combination arrangement. In addition to variations and modifications to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A centrifugal extraction device, comprising a device body (1), wherein a centrifugal tank (2) is recessed on the upper side of the device body (1), a driving chamber (3) is provided in the device body (1) below the centrifugal tank (2), a driving motor (4) is installed in the driving chamber (3), an output shaft of the driving motor (4) passes through the centrifugal tank (2), and a centrifugal disc (5) is horizontally connected in the centrifugal tank (2), and a test tube fixing member is installed on the edge of the centrifugal disc (5), characterized in that: The test tube fixing member comprises a fixing ring (6), the edge of which is connected to the edge of the centrifugal disk (5), and at least three fixing plates (7) are vertically distributed on the lower side of the fixing ring (6). An elastic plate (8) is provided on the inner side of each fixing plate (7), and the upper end of the elastic plate (8) is connected to the inner side of the fixing plate (7), and a gap is left between the lower end and the fixing plate (7).

2. A centrifugal extraction device according to claim 1, characterized in that: The elastic piece (8) is arc-shaped, and at least two elastic pieces (8) are provided on the inner side of each fixing piece (7) from top to bottom.

3. A centrifugal extraction device according to claim 1, characterized in that: A bottom plate (9) is horizontally arranged on the inner side of the lower end of one of the fixing plates (7).

4. A centrifugal extraction device according to claim 1, characterized in that: A mounting hole (10) passing through the upper and lower sides is provided near the edge of the centrifugal disc (5); a connecting section (11) is horizontally provided on the side of the fixing ring (6); an insertion rod (12) is vertically provided on the lower side of one end of the connecting section (11) away from the fixing ring (6); and the insertion rod (12) is movably provided in the mounting hole (10).

5. A centrifugal extraction device according to claim 4, characterized in that: A rectangular rotating block (13) is rotatably arranged in the mounting hole (10), and an insertion hole (14) is provided on the rotating block (13) and passes through the upper and lower sides. The insertion rod (12) is clamped in the insertion hole (14). The rotating block (13) is provided with a rotating shaft (15) on both the left and right sides of the side facing the center of the centrifugal disk (5). The two rotating shafts (15) are rotatably connected to the hole walls on the opposite sides of the rotating hole.

6. A centrifugal extraction device according to claim 4, characterized in that: The lower end of the insertion rod (12) is provided with a sharp portion (16).

7. A centrifugal extraction device according to claim 1, characterized in that: A flip-type cover plate (17) for closing the notch of the centrifugal tank (2) is provided on the upper side of the device body (1), and a transparent area (18) is provided in the middle of the flip-type cover plate (17).

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