Precipitation centrifugal machine
By introducing a combination of a cylindrical rotating rod and a Y-shaped mounting rod into a laboratory centrifuge, and utilizing a self-locking structure of a rectangular push plate and a memory spring, the problems of plate angle changes and sample detachment were solved, thus achieving stability and safety in the centrifugation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-03-03
AI Technical Summary
The placement plate of existing laboratory centrifuges is prone to changing angle during centrifugation due to the lack of a self-locking structure, resulting in poor precipitation and the risk of sample tubes falling off.
A centrifuge structure comprising a cylindrical rotating rod, a Y-shaped mounting rod, and a rectangular placement plate was designed. The placement plate is temporarily fixed by the cooperation of a rectangular push plate and a memory spring, and the sample tubes are clamped by an elastic arc plate to ensure that they remain fixed during centrifugation.
It effectively prevents the angle of the placement plate from changing during centrifugation, ensuring the stability of the precipitation effect, preventing sample tubes from falling off, and simplifying the operation steps.
Smart Images
Figure CN223959816U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sedimentation centrifuge technology, and in particular to a sedimentation centrifuge. Background Technology
[0002] The centrifuge was developed to overcome the shortcomings of natural sedimentation. Its basic principle is to use centrifugal force to accelerate the sedimentation process of particles. Centrifugal force is an inertial force. When an object moves in a circular motion, centrifugal force will throw the object outward. In a centrifuge, by rotating the container containing the sample at high speed, the suspended particles in it are subjected to a centrifugal force that is much greater than gravity, thereby greatly accelerating the sedimentation speed. With the advancement of motor technology, materials science and mechanical manufacturing technology, the speed of centrifuges has been continuously increased. High speed allows centrifuges to effectively precipitate and separate smaller particles, such as viruses, proteins and other biological macromolecules.
[0003] In the early days of laboratory work, sedimentation separation mainly relied on natural sedimentation. Natural sedimentation uses gravity to make solid particles in a suspension gradually sink, thereby achieving solid-liquid separation. However, this method has many drawbacks. First, the natural sedimentation rate is very slow. For tiny particles or particles with a density similar to that of the liquid, the sedimentation process may take several hours or even days to complete.
[0004] Existing laboratory centrifuges require the placement plate inside to be adjusted in angle before centrifugation begins. Most of these adjustments are made by rotating a torsion bar, which lacks a self-locking or temporary fixing mechanism after rotation. This makes it easy for the angle of the placement plate to change during sample centrifugation, resulting in poor precipitation and the risk of sample tubes falling off. Utility Model Content
[0005] Given that most existing laboratory centrifuges adjust the internal plate by rotating a torsion bar, and there is no self-locking or temporary fixing structure after rotation, the angle of the plate can easily change during sample centrifugation, resulting in poor precipitation and the risk of sample tubes falling off. Therefore, this utility model is proposed.
[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a sedimentation centrifuge, comprising: a centrifuge body and a centrifugal structure, wherein the centrifuge body is provided with a centrifugal structure, the centrifugal structure comprising: a cylindrical rotating rod, a ring sleeve is installed on the rod body of the cylindrical rotating rod, and several Y-shaped mounting rods are provided on the arc surface of the ring, and a rectangular placement plate is rotatably connected between a pair of multiple Y-shaped mounting rods, several cylindrical placement cylinders are provided through the upper surface of the rectangular placement plate, and a rotating cylinder is provided on the vertical surface of the rectangular placement plate, a rectangular groove is provided at the intersection of the rotating cylinder and the Y-shaped mounting rod, and a cylindrical fixing cylinder is provided through the vertical surface of the rectangular groove away from the rotating cylinder.
[0007] In a preferred embodiment of the sedimentation centrifuge described in this utility model, a pair of symmetrical docking frames are fixedly connected to the arc surface inside the rotating cylinder, and a round rod is provided through the circular surface of the cylindrical fixed cylinder away from the rotating cylinder.
[0008] In a preferred embodiment of the sedimentation centrifuge described in this utility model, a cylindrical extension rod is fixedly connected to the circular surface of the round rod near the docking frame, and a pair of arc-shaped guide blocks are provided on the rod body of the cylindrical extension rod.
[0009] In a preferred embodiment of the sedimentation centrifuge described in this utility model, a pair of circular ring limiting sleeves are provided on the cylindrical extension rod, and a rectangular push plate is provided between the pair of circular ring limiting sleeves. A rectangular notch is provided through the lower vertical surface of the rectangular push plate, and a U-shaped mounting plate is provided on the top surface of the rectangular notch. A toothed plate is fixedly connected to the inner ring of the U-shaped mounting plate.
[0010] In a preferred embodiment of the sedimentation centrifuge described in this utility model, a gear column is provided through the bottom surface inside the cylindrical fixed cylinder, a pair of rectangular loading plates are provided on the bottom surface outside the cylindrical fixed cylinder, and a U-shaped guide sleeve is provided between the pair of rectangular loading plates. A rectangular positioning rod is slidably connected to the inner ring of the U-shaped guide sleeve. A circular annular docking plate is provided on the bottom surface outside the rotating cylinder. A memory spring is provided on the circular surface of the cylindrical fixed cylinder away from the docking frame. One end of the memory spring is connected to the cylindrical fixed cylinder, and the end of the memory spring away from the cylindrical fixed cylinder is connected to a torsion bar.
[0011] In a preferred embodiment of the sedimentation centrifuge described in this utility model, several rectangular mounting grooves are provided on the arc surface inside the cylindrical placement cylinder, a pair of symmetrical mounting strips are provided on the vertical surface inside the rectangular mounting grooves, and an elastic arc plate is provided between the pair of mounting strips.
[0012] The beneficial effects of this utility model are:
[0013] 1. The equipment has a temporary fixing structure between the rectangular placement plate and the cylindrical fixing cylinder. After rotation, it can be fixed by pulling the torsion bar. This can effectively prevent the rectangular placement plate from changing angle due to centrifugal force during the use of the centrifuge. The temporary fixing structure is also very simple to operate and does not require complicated operation steps.
[0014] 2. The cylindrical placement tube has an internal structure for clamping the sample tube. The sample tube is temporarily fixed by the compression of the spring arc plate and the rebound force of the spring arc plate, ensuring that the sample tube will not detach from the inside of the cylindrical placement tube when it is inside the centrifuge. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0017] Figure 2 This is a schematic diagram of the centrifugal structure of this utility model.
[0018] Figure 3 This is a schematic diagram of the connection structure at the rectangular placement plate of this utility model.
[0019] Figure 4 This is a schematic diagram of the connection structure between the rotating cylinder and the cylindrical fixed cylinder of this utility model.
[0020] Figure 5 This is a schematic diagram of the connection structure at the rectangular push plate of this utility model.
[0021] Figure 6 This is a schematic diagram of the connection structure at the rectangular loading plate of this utility model.
[0022] Figure 7 This is a schematic diagram of the internal structure of the cylindrical placement tube of this utility model.
[0023] Explanation of reference numerals in the attached drawings: 1. Centrifuge body; 2. Centrifuge structure; 3. Cylindrical rotating rod; 4. Y-shaped mounting rod; 5. Rectangular placement plate; 6. Cylindrical placement cylinder; 7. Rotating cylinder; 8. Cylindrical fixing cylinder; 9. Docking frame; 10. Round rod; 11. Cylindrical extension rod; 12. Arc-shaped guide block; 13. Circular ring limiting sleeve; 14. Rectangular push plate; 15. Toothed plate; 16. Gear column; 17. Rectangular loading plate; 18. U-shaped guide sleeve; 19. Rectangular positioning rod; 20. Circular ring docking plate; 21. Memory spring; 22. Torsion bar; 23. Rectangular mounting groove; 24. Mounting strip; 25. Elastic arc plate. Detailed Implementation
[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0025] Example 1
[0026] Reference Figure 1-6 This is the first embodiment of the present invention, which provides a sedimentation centrifuge, including: a centrifuge body 1 and a centrifugal structure 2. The centrifugal structure 2 is provided inside the centrifuge body 1. The centrifugal structure 2 includes: a cylindrical rotating rod 3. A ring sleeve is installed on the rod body of the cylindrical rotating rod 3, and several Y-shaped mounting rods 4 are provided on the arc surface of the ring. A rectangular placement plate 5 is rotatably connected between a pair of multiple Y-shaped mounting rods 4. Several cylindrical placement cylinders 6 are provided through the upper surface of the rectangular placement plate 5, and a rotating cylinder 7 is provided on the vertical surface of the rectangular placement plate 5. A rectangular groove is also provided at the intersection of the rotating cylinder 7 and the Y-shaped mounting rods 4. A cylindrical fixing cylinder 8 is provided through the rectangular groove away from the vertical surface of the rotating cylinder 7. The cylindrical fixing cylinder 8 is fixedly connected to the Y-shaped mounting rods 4, and the rotating cylinder 7 is rotatably connected to the Y-shaped mounting rods 4.
[0027] A pair of symmetrical docking frames 9 are fixedly connected to the arc surface inside the rotating cylinder 7. A round rod 10 is provided through the circular surface of the cylindrical fixed cylinder 8 away from the rotating cylinder 7. The round rod 10 and the cylindrical fixed cylinder 8 are connected in a sliding and rotating relationship.
[0028] A cylindrical extension rod 11 is fixedly connected to the circular surface of the cylindrical rod 10 near the docking frame 9. A pair of arc-shaped guide blocks 12 are provided on the rod body of the cylindrical extension rod 11. A pair of circular ring limiting sleeves 13 are provided on the rod body of the cylindrical extension rod 11. A rectangular push plate 14 is provided between the pair of circular ring limiting sleeves 13. A rectangular notch is provided through the vertical surface of the lower end of the rectangular push plate 14. A U-shaped mounting plate is provided on the top surface of the rectangular notch. A toothed plate 15 is fixedly connected to the inner ring of the U-shaped mounting plate. The rectangular push plate 14 and the cylindrical extension rod 11 are in a sliding relationship. A circular hole is provided at the intersection of the rectangular push plate 14 and the cylindrical extension rod 11. The inner diameter of the circular hole is larger than the diameter of the cylindrical extension rod 11. The guide block on the toothed plate 15 and the gear column 16 are in a meshing relationship.
[0029] A gear column 16 is installed through the bottom surface inside the cylindrical fixed cylinder 8. A pair of rectangular loading plates 17 are installed on the bottom surface outside the cylindrical fixed cylinder 8, and a U-shaped guide sleeve 18 is installed between the pair of rectangular loading plates 17. A rectangular positioning rod 19 is slidably connected to the inner ring of the U-shaped guide sleeve 18. Several circular ring docking plates 20 are installed on the arc surface outside the rotating cylinder 7. A memory spring 21 is installed on the circular surface of the cylindrical fixed cylinder 8 away from the docking frame 9. One end of the memory spring 21 is connected to the cylindrical fixed cylinder 8, and the other end of the memory spring 21 away from the cylindrical fixed cylinder 8 is connected to a torsion bar 22. A toothed plate 15 is also installed on the upper surface of the rectangular positioning rod 19. The guide block on the toothed plate 15 is meshed with the teeth on the gear column 16. The vertical surface of the torsion bar 22 is installed on the rotating ring, and the rotating ring is connected to one end of the memory spring 21.
[0030] In use, the rectangular placement plate 5 and the Y-shaped mounting rod 4 are on the same horizontal plane. Then, the sample tube is placed in the inner ring of the cylindrical placement cylinder 6. To ensure that centrifuged impurities are at the bottom of the tube, the angle of the rectangular placement plate 5 needs to be adjusted. First, hold the torsion rod 22 by hand, then push it. As the torsion rod 22 is pushed, because the cylindrical fixing cylinder 8 and the Y-shaped mounting rod 4 are fixedly connected, the cylindrical rod 10 and the cylindrical extension rod 11 will move. A pair of annular limiting sleeves 13 are provided on the cylindrical extension rod 11, and a rectangular push plate 14 is provided between the pair of annular limiting sleeves 13. Therefore, the rectangular push plate 14 will be pushed at this time. Because the rectangular push plate 14 is provided with a toothed plate 15, and the toothed plate 15 is meshed with the gear column 16, and the upper surface of the rectangular positioning rod 19 is also provided with a toothed plate 15, the guide block on the toothed plate 15 is meshed with the teeth on the gear column 16, so when the rectangular push plate 14 moves, the rectangular... The toothed plate 15 on the push plate 14 will drive the gear column 16 to rotate, thereby pulling the rectangular positioning rod 19 through the rotation of the gear column 16, so that the rectangular positioning rod 19 disengages from the inner ring of the annular docking plate 20. Note: Before the rectangular positioning rod 19 is completely disengaged, a pair of arc-shaped guide blocks 12 have already entered the inner ring of the docking frame 9. Then, only the torsion bar 22 needs to be rotated. Note: Because it is a centrifuge used in the laboratory, the size of the test tube is proportional to the angle of the rectangular placement plate 5, and the angle required in the laboratory is a specific value. Do not make unnecessary angle adjustments. After the angle of the torsion bar 22 is adjusted, the other annular docking plate 20 will be on the same horizontal line as the rectangular positioning rod 19. At this time, pull back the torsion bar 22 to make the cylindrical extension rod 11 perform a reset movement. The movement process is the opposite of the above process. However, note: Before the arc-shaped guide blocks 12 are completely disengaged from the docking frame 9, the rectangular positioning rod 19 has already entered the inner ring of the annular docking plate 20.
[0031] Example 2
[0032] Reference Figure 3 and 7 This is the second embodiment of the present invention. This embodiment differs from the first embodiment in that: several rectangular mounting grooves 23 are formed on the arc surface inside the cylindrical placement tube 6; a pair of symmetrical mounting strips 24 are arranged on the vertical surface inside the rectangular mounting grooves 23; and an elastic arc-shaped plate 25 is arranged between the pair of mounting strips 24. The elastic arc-shaped plate 25 is a type of spring sheet, which is an elastic element, usually made of metal materials such as stainless steel or spring steel. Its shape is generally thin and it has the ability to elastically deform.
[0033] When using it, first follow the operating steps in Example 1 to put the sample tube into the inner ring of the cylindrical placement tube 6. As the sample tube enters, several spring plates will be squeezed. When the spring plates deform, because the forces are mutual, the spring plates will also exert pressure on the sample tube and rebound, ultimately clamping the sample tube.
[0034] The remaining structure is the same as that in Example 1.
[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A sedimentation centrifuge, comprising: The centrifuge body (1) and centrifuge structure (2) are provided inside the centrifuge body (1). The centrifuge structure (2) is characterized in that: the centrifuge structure (2) includes: a cylindrical rotating rod (3), a ring sleeve is installed on the rod body of the cylindrical rotating rod (3), and several Y-shaped mounting rods (4) are provided on the arc surface of the ring sleeve. A rectangular placement plate (5) is rotatably connected between a pair of Y-shaped mounting rods (4). Several cylindrical placement cylinders (6) are provided through the upper surface of the rectangular placement plate (5), and a rotating cylinder (7) is provided on the vertical surface of the rectangular placement plate (5). A rectangular groove is also provided at the intersection of the rotating cylinder (7) and the Y-shaped mounting rod (4), and a cylindrical fixing cylinder (8) is provided through the vertical surface of the rectangular groove away from the rotating cylinder (7).
2. A sedimentation centrifuge according to claim 1, characterized in that: A pair of symmetrical docking frames (9) are fixedly connected to the arc surface inside the rotating cylinder (7), and a round rod (10) is provided through the circular surface of the cylindrical fixing cylinder (8) away from the rotating cylinder (7).
3. A sedimentation centrifuge according to claim 2, characterized in that: The cylindrical extension rod (11) is fixedly connected to the circular surface of the cylindrical rod (10) near the docking frame (9), and a pair of arc-shaped guide blocks (12) are provided on the rod body of the cylindrical extension rod (11).
4. A sedimentation centrifuge according to claim 3, characterized in that: The cylindrical extension rod (11) is provided with a pair of circular ring limiting sleeves (13), and a rectangular push plate (14) is provided between the pair of circular ring limiting sleeves (13). A rectangular notch is provided through the vertical surface of the lower end of the rectangular push plate (14), and a U-shaped mounting plate is provided on the top surface of the rectangular notch. A toothed plate (15) is fixedly connected to the inner ring of the U-shaped mounting plate.
5. A sedimentation centrifuge according to claim 1, characterized in that: A gear column (16) is provided through the bottom surface inside the cylindrical fixing cylinder (8). A pair of rectangular loading plates (17) are provided on the bottom surface outside the cylindrical fixing cylinder (8), and a U-shaped guide sleeve (18) is provided between the pair of rectangular loading plates (17). A rectangular positioning rod (19) is slidably connected to the inner ring of the U-shaped guide sleeve (18). A circular docking plate (20) is provided on the bottom surface outside the rotating cylinder (7). A memory spring (21) is provided on the circular surface of the cylindrical fixing cylinder (8) away from the docking frame (9). One end of the memory spring (21) is connected to the cylindrical fixing cylinder (8), and the end of the memory spring (21) away from the cylindrical fixing cylinder (8) is connected to a torsion bar (22).
6. A sedimentation centrifuge according to claim 1, characterized in that: The cylindrical placement tube (6) has several rectangular mounting slots (23) on its inner arc surface. A pair of symmetrical mounting strips (24) are provided on the vertical surface inside the rectangular mounting slots (23), and an elastic arc plate (25) is provided between the pair of mounting strips (24).