A high speed bench centrifuge

Abstract

This utility model relates to the field of centrifuge technology, specifically to a high-speed benchtop centrifuge, comprising a shell with a downwardly recessed top wall forming a centrifuge chamber. A servo motor is disposed below the bottom wall of the centrifuge chamber, with the output end of the servo motor penetrating through the bottom wall of the centrifuge chamber and extending into the centrifuge chamber. A centrifuge disc is detachably connected to the output end of the shell on one side of the servo motor. A heat dissipation hole is provided on the outer wall of the shell on one side of the servo motor. A fan blade is installed on the output end of the heat dissipation motor. A fan shroud is installed inside the shell on the inner side of the fan blade. Multiple air guide plates are rotatably connected inside the fan shroud. The air guide plates are connected to the end of the fan blade away from the heat dissipation motor through a linkage structure. When the heat dissipation motor drives the fan blade to deliver cold air into the shell along the fan shroud, the fan blade can drive the air guide plates to deflect repeatedly through the linkage structure, guiding and dispersing the air passing through the fan shroud. This avoids the traditional air cooling method, which can only blow directly onto the side of the servo motor facing the air cooling device, and greatly improves the heat dissipation effect.

Description

Technical Field

[0001] This utility model belongs to the field of centrifuge technology, specifically relating to a high-speed benchtop centrifuge. Background Technology

[0002] Benchtop high-speed centrifuges are standard laboratory centrifuges, widely used in scientific research, education, and production departments in fields such as biology, chemistry, and medicine. They are suitable for the rapid separation and synthesis of trace samples.

[0003] When a high-speed centrifuge is working, the motor drives the disc to rotate at high speed, which generates a lot of heat. The current method is to open heat dissipation holes on the centrifuge shell and install an air-cooling structure on the side of the centrifuge shell opposite to the heat dissipation holes to cool the motor. Since the position of the air-cooling structure is fixed, it can only blow directly on one side of the motor, resulting in poor heat dissipation. Utility Model Content

[0004] The purpose of this invention is to provide a high-speed benchtop centrifuge with a simple structure and reasonable design in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A high-speed benchtop centrifuge includes a shell with a downwardly recessed top wall forming a centrifuge chamber. A servo motor is installed below the bottom wall of the centrifuge chamber, and the output end of the servo motor passes through the bottom wall of the centrifuge chamber and extends into the centrifuge chamber. A centrifuge disc is detachably connected to the output end of the servo motor. A heat dissipation hole is provided on the outer wall of the shell on one side of the servo motor. An air inlet plate is fixedly installed on the outer wall of the shell opposite to the heat dissipation hole. An air cooling device is installed on the air inlet plate. An air shroud is provided inside the shell inside the air cooling device. Multiple linearly distributed air guide plates are rotatably connected inside the air shroud. The side of the air guide plate near the air cooling device is connected to the air cooling device through a linkage structure, so that the air cooling device can drive multiple air guide plates to deflect repeatedly inside the air shroud at the same time.

[0007] As a further optimization of this utility model, a drive shaft is fixedly connected to the output end of the servo motor, a plurality of receiving holes are opened in a ring around the centrifugal disc, and a non-circular hole is opened in the center of the centrifugal disc. The cross-sectional size of the non-circular hole is adapted to the cross-sectional size of the drive shaft, and the centrifugal disc is sleeved on the drive shaft through the non-circular hole.

[0008] As a further optimization of this utility model, a screw is fixedly connected to the top of the drive shaft, and a nut is threaded onto the screw, with the lower surface of the nut fitting against the top of the centrifugal disc.

[0009] As a further optimization of this utility model, the air-cooling device includes a heat dissipation motor fixedly installed on the air intake plate, and fan blades are fixedly connected to the output end of the heat dissipation motor.

[0010] As a further optimization of this utility model, the linkage structure includes two limiting posts symmetrically installed on the end of the fan cover near the fan blade. The same sliding plate is slidably sleeved on the two limiting posts. The side of the air guide plate near the sliding plate is fixed to the sliding plate by an elastic rope. The middle section of the sliding plate has a guide ring that is perpendicular to the sliding plate.

[0011] As a further optimization of this utility model, the linkage structure also includes a transmission rod fixedly connected to the center of the end of the fan blade away from the heat dissipation motor. The transmission rod has a Z-shaped structure, and the end of the transmission rod away from the fan blade extends into the guide ring and is slidably connected to the guide ring.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. A fan blade is installed on the output end of the cooling motor. A fan shroud is installed inside the housing on the inner side of the fan blade. Multiple air guide plates are rotatably connected inside the fan shroud. The air guide plates are connected to the end of the fan blade away from the cooling motor through a linkage structure. When the cooling motor drives the fan blade to deliver cold air into the housing along the fan shroud, the fan blade can drive the air guide plates to deflect repeatedly through the linkage structure, guiding and dispersing the air passing through the fan shroud. This avoids the traditional air cooling method, which can only blow directly onto the side of the servo motor facing the air cooling device, and greatly improves the heat dissipation effect.

[0014] 2. The centrifuge disc is fitted onto the drive shaft through a non-circular hole and locked by a screw and nut. When it is necessary to clean the centrifuge chamber and centrifuge disc, the nut at the top of the screw can be loosened, and then the centrifuge disc can be slid up to remove it from the top of the drive shaft, making cleaning easier and more convenient for users. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0017] Figure 3 This is a schematic diagram showing the installation position of the air-cooling device and the air cover of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure between the wind shield and the slide plate of this utility model;

[0019] Figure 5 This is a schematic diagram of the installation position of the transmission rod of this utility model.

[0020] In the diagram: 1. Shell; 2. Centrifuge chamber; 3. Servo motor; 4. Drive shaft; 5. Screw; 6. Centrifuge disc; 7. Non-circular hole; 8. Receiving hole; 9. Nut; 10. Sealing cap; 11. Heat dissipation hole; 12. Air inlet plate; 13. Cooling motor; 14. Fan blade; 15. Drive rod; 16. Fan cover; 17. Limiting post; 18. Slide plate; 19. Guide ring; 20. Air guide plate; 21. Rotating shaft; 22. Elastic rope. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example

[0023] like Figure 1 - Figure 5 As shown, a high-speed benchtop centrifuge includes a shell 1 with a downward-recessed top wall forming a centrifuge chamber 2. A servo motor 3 is disposed below the bottom wall of the centrifuge chamber 2. The output end of the servo motor 3 passes through the bottom wall of the centrifuge chamber 2 and extends into the centrifuge chamber 2. A drive shaft 4 is fixedly connected to the output end of the servo motor 3. A centrifuge disc 6 is detachably connected to the drive shaft 4. Multiple receiving holes 8 are circumferentially formed on the periphery of the centrifuge disc 6. The diameter of the receiving holes 8 is set according to the model of the centrifuge tubes and is used to clamp and fix the centrifuge tubes for centrifugation experiments.

[0024] The centrifuge disc 6 has a non-circular hole 7 in the center. The size of the inner cavity of the non-circular hole 7 is adapted to the size of the cross-section of the drive shaft 4. The centrifuge disc 6 is fitted onto the drive shaft 4 through the non-circular hole 7. Since the inner cavity cross-sections of the drive shaft 4 and the non-circular hole 7 are both irregular structures, when the centrifuge disc 6 is fitted onto the drive shaft 4 through the non-circular hole 7, relative rotation between the centrifuge disc 6 and the drive shaft 4 can be avoided as much as possible.

[0025] To prevent the centrifuge disc 6 from slipping off the top of the drive shaft 4 during the centrifugation operation, a screw 5 is fixedly connected to the top of the drive shaft 4, and a nut 9 is provided above the screw 5. After the centrifuge disc 6 is put on the drive shaft 4, the user can screw the nut 9 onto the screw 5 until the bottom of the nut 9 abuts against the upper surface of the centrifuge disc 6, thereby limiting the position of the centrifuge disc 6.

[0026] A sealing cover 10 is rotatably connected to one side of the top of the housing 1. When centrifuging materials, the user can rotate the sealing cover 10 to close the top opening of the centrifuge chamber 2 to improve the overall safety of the equipment.

[0027] A heat dissipation hole 11 is provided on the outer wall of the housing 1 on one side of the servo motor 3. An air intake plate 12 is fixedly installed on the outer wall of the housing 1 opposite to the heat dissipation hole 11. An air intake hole is provided on the air intake plate 12. An air cooling device is installed on the air intake plate 12. The air cooling device includes a cooling motor 13 fixedly installed on the air intake plate 12. A fan blade 14 is fixedly connected to the output end of the cooling motor 13. When the cooling motor 13 is started, the cooling motor 13 will drive the fan blade 14 to rotate at high speed, drawing air from the external environment into the housing 1 through the air intake hole and expelling the hot air in the housing 1 through the heat dissipation hole 11 to dissipate heat from the servo motor 3 installed in the housing 1.

[0028] An air hood 16 is provided inside the housing 1 inside the air-cooled device. Multiple linearly distributed air guide plates 20 are provided inside the air hood 16. The upper and lower ends of the air guide plates 20 are rotatably connected to the side wall of the air hood 16 through a rotating shaft 21, so that the air guide plates 20 can rotate around the rotating shaft 21 to guide the air passing through the air hood 16.

[0029] The side of the air guide plate 20 closest to the air-cooling device is connected to the air-cooling device via a linkage structure. The linkage structure includes two limiting posts 17 symmetrically installed on the end of the fan cover 16 near the fan blade 14. The same sliding plate 18 is slidably fitted on the two limiting posts 17. The side of the air guide plate 20 closest to the sliding plate 18 is fixed to the sliding plate 18 by an elastic rope 22. The middle section of the sliding plate 18 has a guide ring 19 integrally formed and arranged perpendicularly to the sliding plate 18. The linkage structure also includes a transmission rod 15 fixedly connected to the center of the end of the fan blade 14 away from the cooling motor 13. The transmission rod 15 has a Z-shaped structure. The end of the transmission rod 15 away from the fan blade 14 extends into the guide ring 19 and is slidably connected to the guide ring 19. When the cooling motor 13 drives the fan blade 14 to rotate and deliver air into the housing 1 along the fan cover 16, the transmission rod 15 rotates synchronously and cooperates with the guide ring 19 to drive the slide plate 18 to slide left and right. The sliding of the slide plate 18, in conjunction with the elastic rope 22, pulls the air guide plate 20 to repeatedly deflect around the rotating shaft 21, guiding the cold air passing through the fan cover 16. This avoids the traditional air cooling method from only being able to blow directly onto the side of the servo motor 3 facing the air cooling device, greatly improving the heat dissipation effect.

[0030] A power interface electrically connected to the servo motor 3 is provided on one side of the housing 1 for connecting to an external power source. A control panel electrically connected to the servo motor 3 is installed on the outer wall of the housing 1 above the air intake plate 12 for controlling the speed and start / stop of the servo motor 3.

[0031] It should be noted that, in use, this high-speed benchtop centrifuge involves fitting the centrifuge disc 6 onto the drive shaft 4 through the non-circular hole 7, and locking the centrifuge disc 6 with the nut 9 and screw 5. This allows the centrifuge tubes containing the medium to be diagonally inserted into the receiving hole 8. After closing the sealing cover 10, the servo motor 3 is started to drive the centrifuge disc 6 to rotate at high speed, centrifuging the medium. A cooling motor 13 is installed on the air inlet plate 12 on one side of the casing 1, and fan blades 14 are installed on the output end of the cooling motor 13. The inner side of the fan blades 14... A fan cover 16 is installed inside the housing 1. Multiple air guide plates 20 are rotatably connected inside the fan cover 16. The air guide plates 20 are connected to the end of the fan blade 14 away from the cooling motor 13 through a linkage structure. When the cooling motor 13 drives the fan blade 14 to deliver cold air into the housing 1 along the fan cover 16, the fan blade 14 can drive the air guide plates 20 to deflect repeatedly through the linkage structure, guiding and dispersing the air passing through the fan cover 16. This avoids the traditional air cooling method from only being able to blow directly onto the side of the servo motor 3 facing the air cooling device, and greatly improves the heat dissipation effect.

[0032] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A high-speed benchtop centrifuge, comprising a shell (1) with a downwardly recessed top wall forming a centrifuge chamber (2), wherein a servo motor (3) is disposed below the bottom wall of the centrifuge chamber (2), the output end of the servo motor (3) penetrates the bottom wall of the centrifuge chamber (2) and extends into the centrifuge chamber (2), and a centrifuge disc (6) is detachably connected to the output end of the servo motor (3), characterized in that: A heat dissipation hole (11) is provided on the outer wall of the housing (1) on one side of the servo motor (3). An air intake plate (12) is fixedly installed on the outer wall of the housing (1) opposite to the heat dissipation hole (11). An air cooling device is installed on the air intake plate (12). A fan shroud (16) is provided inside the housing (1) inside the air cooling device. Multiple linearly distributed air guide plates (20) are rotatably connected inside the fan shroud (16). The side of the air guide plate (20) close to the air cooling device is connected to the air cooling device through a linkage structure, so that the air cooling device can drive multiple air guide plates (20) to deflect repeatedly inside the fan shroud (16) at the same time.

2. A high speed bench top centrifuge as claimed in claim 1, wherein: The servo motor (3) has a drive shaft (4) fixedly connected to its output end. The centrifugal disc (6) has multiple receiving holes (8) circumferentially open on its periphery. The centrifugal disc (6) has a non-circular hole (7) in its center. The cross-sectional size of the non-circular hole (7) is adapted to the cross-sectional size of the drive shaft (4). The centrifugal disc (6) is fitted onto the drive shaft (4) through the non-circular hole (7).

3. A high speed bench top centrifuge as claimed in claim 2, wherein: A screw (5) is fixedly connected to the top of the drive shaft (4), and a nut (9) is threaded onto the screw (5). The lower surface of the nut (9) is in contact with the top of the centrifugal disc (6).

4. A high speed bench top centrifuge as claimed in claim 1, wherein: The air-cooling device includes a heat dissipation motor (13) fixedly installed on the air intake plate (12), and a fan blade (14) is fixedly connected to the output end of the heat dissipation motor (13).

5. A high-speed benchtop centrifuge according to claim 4, characterized in that: The linkage structure includes two limiting posts (17) symmetrically installed on the wind shield (16) near the end of the fan blade (14). The same sliding plate (18) is slidably sleeved on the two limiting posts (17). The side of the air guide plate (20) near the sliding plate (18) is fixed to the sliding plate (18) by an elastic rope (22). The middle section of the sliding plate (18) is integrally formed with a guide ring (19) that is perpendicular to the sliding plate (18).

6. A high speed bench top centrifuge as claimed in claim 5, wherein: The linkage structure also includes a transmission rod (15) fixedly connected to the center of the end of the fan blade (14) away from the cooling motor (13). The transmission rod (15) has a Z-shaped structure, and the end of the transmission rod (15) away from the fan blade (14) extends into the guide ring (19) and is slidably connected to the guide ring (19).

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