A small high-speed centrifuge

Abstract

This utility model relates to the field of laboratory instrument technology, specifically a small high-speed centrifuge. It includes a body, a double-layer cover assembly, a centrifugation working assembly, a cooling assembly, a noise reduction assembly, and a shock absorption assembly. The body comprises an upper shell and a lower shell. The double-layer cover assembly is connected to the opening of the upper shell via a hinged structure and includes an inner cover, an outer cover, and a transparent viewing window fitted onto and sealed on the outer cover. A locking tongue is provided on the edge of the inner cover. An electromagnetic lock electrically connected to the control assembly is installed at a corresponding location on the upper shell. The centrifugation working assembly is located inside the body and includes a motor mounting plate inside the lower shell, a high-speed motor mounted thereon, and a turntable at the top of the motor output shaft. The cooling assembly dissipates heat from the high-speed motor. The noise reduction assembly is attached to the contact surface between the double-layer cover and the opening of the upper shell. The shock absorption assembly is located between the centrifugation working assembly and the lower shell. This utility model features a double-layer cover that enhances the cover's strength; the electromagnetic lock unlocks only when the motor stops, preventing accidental opening; and the transparent viewing window allows for real-time sample monitoring, avoiding centrifugation interruptions and contamination, thus meeting the safety and practical requirements of a small high-speed centrifuge.

Description

Technical Field

[0001] This utility model relates to the field of laboratory instrument technology, and specifically to a small high-speed centrifuge. Background Technology

[0002] As core separation equipment in laboratories of biology, chemistry, and medicine, small high-speed centrifuges need to achieve high-speed operation within a compact body while meeting the experimental requirements of "safety, reliability, stable precision, low noise, and environmental friendliness." Although the industry has made some optimizations to centrifuges, there are still significant technical deficiencies in key dimensions such as safety protection systems, heat dissipation of core components, vibration control range, noise reduction effectiveness, and emergency response capabilities. These deficiencies make it difficult to adapt to the precision experiments and safe operation requirements at high speeds. Specific problems are as follows: Existing solutions mostly use single-layer covers, which are not strong enough and make the equipment less secure. In addition, existing locks are mostly mechanical latches without motor linkage. Even if the motor is not stopped, the cover can still be forcibly opened, which can easily lead to splashing of liquid inside the high-speed rotating test tube, sample contamination, or even equipment damage. Utility Model Content

[0003] This invention provides a small high-speed centrifuge to address the problems of existing technologies.

[0004] The purpose of this utility model can be achieved through the following technical solution: a small high-speed centrifuge, including a body, a double-layer cover assembly, a centrifugation working assembly, a cooling assembly, a noise reduction assembly, and a shock absorption assembly; The fuselage includes an upper shell and a lower shell, and the top of the upper shell has an opening; The double-layer cover assembly is connected to the opening of the upper shell via a hinge structure. The double-layer cover assembly includes an inner cover, an outer cover, a transparent window, a latch, and an electromagnetic lock. The transparent window is embedded in the outer cover and the two are sealed together. The latch is located on the edge of the inner cover. The electromagnetic lock is fixedly installed on the upper shell at the position corresponding to the latch. The electromagnetic lock is electrically connected to the control component. The centrifugal working assembly is located inside the machine body and includes a high-speed motor, a motor mounting plate and a turntable. The motor mounting plate is horizontally fixed inside the lower shell. The high-speed motor is fixed to the upper surface of the motor mounting plate by bolts. The turntable is coaxially fixed to the top of the output shaft of the high-speed motor. The cooling component is located on the side of the high-speed motor for heat dissipation. The noise reduction component is fixed in the annular groove of the upper shell; The shock absorption assembly is disposed between the centrifugal working assembly and the lower shell to reduce the vibration generated when the centrifugal working assembly is working.

[0005] In a further improvement, the cooling assembly includes a cooling fan and heat dissipation holes in the chassis. The cooling fan is fixed to a heavy base plate, and the heat dissipation holes are opened on the side wall of the lower shell and correspond to the airflow direction of the cooling fan.

[0006] In a further improvement, the shock absorption assembly includes a shock absorption column and a load-bearing base plate. The load-bearing base plate is horizontally positioned at the bottom of the lower shell. The top end of the shock absorption column is fixedly connected to the lower surface of the motor mounting plate, and the bottom end is fixedly connected to the upper surface of the load-bearing base plate.

[0007] In a further improvement, the hinge structure of the double-layer cover assembly includes a stainless steel rod and a double torsion spring. The stainless steel rod is horizontally fixed to one side of the opening of the upper shell. The inner cover and the outer cover each have a shaft hole adapted to the stainless steel rod on one side. The double torsion spring is sleeved on the outside of the stainless steel rod, and its two ends abut against the inner side wall of the inner cover and the inner wall of the upper shell, respectively.

[0008] In a further improvement, the control component includes a display control circuit board, a driver board, a power socket with a switch, and a built-in power board. The driver board, the display control circuit board, and the built-in power board are all fixed inside the upper shell, and the power socket with a switch is fixed to the outer side wall of the lower shell. The driver board is electrically connected to the high-speed motor, the cooling fan, the electromagnetic lock, the display control circuit board, the built-in power board, and the power socket with a switch.

[0009] In a further improvement, the noise reduction component is a soft silicone sealing ring with an F-shaped cross-section. The inner wall of the soft silicone sealing ring fits against the edge of the inner cover, and the outer wall fits against the inner wall of the upper shell opening. The height of the soft silicone sealing ring is greater than the gap width between the inner cover and the upper shell opening.

[0010] In a further improvement, the control component also includes an emergency pull cord holder, which is fixed to the outer side wall of the lower housing. A trigger switch is provided inside the emergency pull cord holder, and the trigger switch is electrically connected to the display control circuit board.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The flip cover of this utility model adopts a double-layer structure, which greatly improves the overall structural strength of the cover. At the same time, the electromagnetic lock works with the locking tongue and is electrically connected to the control component. It is only unlocked when the motor stops completely, avoiding accidental opening of the cover during high-speed rotation. It meets the safety protection standards of small high-speed centrifuges. The transparent window is embedded between the double-layer cover and is sealed. The sample status can be monitored in real time through the window without interrupting centrifugation, avoiding centrifugation interruption, sample contamination and safety risks caused by opening the cover. 2. The cooling fan of this utility model is fixed on the heavy base plate and directly close to the side of the high-speed motor. The cooling fan prevents the heat of the motor from being conducted to the turntable and centrifuge chamber at the top through the fixed plate and output shaft. At the same time, the hot air is discharged from the heat dissipation holes on the side wall of the lower shell, instead of spreading upward to the centrifuge chamber area, ensuring that the temperature inside the centrifuge chamber is always close to the room temperature, avoiding sample denaturation or composition changes due to high temperature, and improving the accuracy of experimental data. 3. The shock-absorbing columns of this utility model are evenly distributed under the motor mounting plate, which can simultaneously absorb the radial and axial vibrations of the motor, ensuring that the output shaft of the high-speed motor always remains vertical and that the turntable rotates coaxially; at the same time, the rigid support of the load-bearing base plate prevents the motor mounting plate from deforming due to vibration, further ensuring the positional accuracy of the motor and the turntable. 4. The emergency pull rope seat of this utility model is fixed to the outer side wall of the lower shell. The trigger switch is directly electrically connected to the display control circuit board. When the electromagnetic lock fails, the pull rope is pulled out from the lower shell. Once the pull rope is pulled, a stop signal is sent, and the double-layer cover assembly opens at the same time to prevent the equipment from being unable to be used normally after the electromagnetic lock fails. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial exploded view of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a partial exploded view of the double-layer cover assembly of this utility model.

[0013] In the diagram: 1. Body; 11. Upper shell; 111. Opening; 12. Lower shell; 2. Double-layer cover assembly; 21. Inner cover; 22. Outer cover; 23. Transparent window; 24. Locking tongue; 25. Electromagnetic lock; 3. Centrifugal working assembly; 31. High-speed motor; 32. Motor mounting plate; 33. Turntable; 4. Cooling assembly; 41. Cooling fan; 42. Body ventilation holes; 5. Noise reduction assembly; 6. Shock absorption assembly; 61. Shock absorption column; 62. Load-bearing base plate; 7. Control assembly; 71. Display control circuit board; 72. Drive board; 73. Power socket with switch; 74. Built-in power board; 81. Stainless steel rod; 82. Double torsion spring; 9. Emergency pull rope seat. Detailed Implementation

[0014] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] The following is in conjunction with Example 1 and its appendix. Figures 1-4 The technical solution of this utility model will be further described below. Example 1

[0017] A small high-speed centrifuge includes a body 1, a double-layer cover assembly 2, a centrifugation working assembly 3, a cooling assembly 4, a noise reduction assembly 5, and a shock absorption assembly 6; The fuselage 1 includes an upper shell 11 and a lower shell 12, and the top of the upper shell 11 has an opening 111; The double-layer cover assembly 2 is connected to the opening of the upper shell via a hinge structure. The double-layer cover assembly 2 includes an inner cover 21, an outer cover 22, a transparent window 23, a latch 24, and an electromagnetic lock 25. The transparent window 23 is embedded in the outer cover 22 and the two are sealed together. The latch 24 is located on the edge of the inner cover 21. The electromagnetic lock 25 is fixedly installed on the upper shell at the position corresponding to the latch 24. The electromagnetic lock 25 is electrically connected to the control assembly 7. The centrifugal working assembly 3 is located inside the machine body 1 and includes a high-speed motor 31, a motor fixing plate 32 and a turntable 33. The motor fixing plate 32 is horizontally fixed inside the lower shell 12. The high-speed motor 31 is fixed to the upper surface of the motor fixing plate 32 by bolts. The turntable 33 is coaxially fixed to the top of the output shaft of the high-speed motor 31. The cooling component 4 is disposed on the side of the high-speed motor 31 for heat dissipation. The noise reduction component 5 is fixed in the annular groove of the upper shell 11; The shock-absorbing component 6 is disposed between the centrifugal working component 3 and the lower shell 12 to reduce the vibration generated when the centrifugal working component 3 is working.

[0018] like Figures 1-4As shown, the working principle of this utility model is as follows: First, by sending an unlocking command through the control component 7, the electromagnetic lock 25 is energized to release the latch 24, and the double-layer cover component 2 is manually opened around the hinge structure, exposing the opening 111 of the upper shell 11 and the internal turntable 33. Next, place the balanced centrifuge tubes one by one into the test tube sockets of turntable 33, ensuring that the bottom of the test tubes is in contact with the bottom of the sockets and there is no shaking. Next, manually close the double-layer cover assembly 2 so that the locking tongue 24 on the edge of the inner cover 21 is aligned with the position of the electromagnetic lock 25 on the upper shell 11. After the control assembly 7 detects that the cover is in place, the electromagnetic lock 25 attracts the locking tongue 24 to complete the locking of the double-layer cover. Next, the control component 7 drives the high-speed motor 31 to start. The high-speed motor 31 drives the turntable 33 to rotate at high speed through the output shaft. At the same time, the cooling component 4 starts synchronously to dissipate heat from the side of the high-speed motor 31 in real time. During operation, the status of the centrifuge tubes can be observed through the transparent window 23 of the double-layer cover component 2. When the high-speed motor 31 is running, the shock absorption component 6 absorbs the vibration of the motor and the centrifugal force vibration generated by the rotation of the turntable, reduces the shaking of the machine body 1, and ensures that the turntable 33 always rotates coaxially, avoiding uneven centrifugation of samples or collision of test tubes caused by vibration. Finally, after the centrifugation time is over, the high-speed motor 31 automatically slows down to stop. After the control component 7 detects that the motor has stopped, it powers on the electromagnetic lock 25 to unlock the double-layer cover assembly 2, opens the double-layer cover, and takes out the centrifuge tubes one by one.

[0019] The flip cover of this utility model adopts a double-layer structure, which greatly improves the overall structural strength of the cover. At the same time, the electromagnetic lock 25 cooperates with the locking tongue 24 and is electrically connected to the control component 7. It can only be unlocked when the motor is completely stopped, avoiding accidental opening of the cover during high-speed rotation and meeting the safety protection standards of small high-speed centrifuges. The transparent window 23 is embedded between the double-layer cover and is sealed, allowing real-time monitoring of the sample status without interrupting centrifugation, thus avoiding centrifugation interruption, sample contamination, and safety risks caused by opening the cover.

[0020] As a further preferred embodiment, the cooling assembly 4 includes a cooling fan 41 and a body heat dissipation hole 42. The cooling fan 41 is fixed on the load-bearing base plate 62, and the body heat dissipation hole 41 is opened on the side wall of the lower shell 12 and corresponds to the air outlet direction of the cooling fan 41.

[0021] Specifically, the cooling fan 41 is fixed on the load-bearing base plate 62 and directly close to the side of the high-speed motor 31. The cooling fan 41 prevents the heat from the motor from being conducted to the turntable 33 at the top and the centrifuge chamber through the fixed plate and output shaft. At the same time, the hot air is discharged from the heat dissipation holes 42 on the side wall of the lower shell 12, instead of spreading upward to the centrifuge chamber area, ensuring that the temperature inside the centrifuge chamber is always close to the room temperature, avoiding sample denaturation or composition changes due to high temperature, and improving the accuracy of experimental data.

[0022] As a further preferred embodiment, the shock absorption assembly 6 includes a shock absorption column 61 and a load-bearing base plate 62. The load-bearing base plate 61 is horizontally disposed at the bottom of the lower shell 12. The top end of the shock absorption column 61 is fixedly connected to the lower surface of the motor fixing plate 32 and the bottom end is fixedly connected to the upper surface of the load-bearing base plate 62.

[0023] Specifically, the shock-absorbing columns 61 are evenly distributed below the motor mounting plate 32, which can simultaneously absorb the radial and axial vibrations of the motor, ensuring that the output shaft of the high-speed motor 31 always remains vertical and that the turntable 33 rotates coaxially. At the same time, the rigid support of the load-bearing base plate 62 prevents the motor mounting plate 32 from deforming due to vibration, further ensuring the positional accuracy of the motor and the turntable.

[0024] As a further preferred embodiment, the hinge structure of the double-layer cover assembly includes a stainless steel rod 81 and a double torsion spring 82. The stainless steel rod 81 is horizontally fixed to one side of the upper shell opening 11. The inner cover 21 and the outer cover 22 each have a shaft hole adapted to the stainless steel rod 81 on one side. The double torsion spring 82 is sleeved on the outside of the stainless steel rod 81, and its two ends abut against the inner side wall of the inner cover 21 and the inner wall of the upper shell 11, respectively.

[0025] Specifically, after unlocking the electromagnetic lock 25, the elastic force of the double torsion spring can help push the double cover upwards, avoiding the problem of difficulty in opening and closing due to the large weight of the double cover. A single person can easily complete the opening operation, improving the efficiency of experimental operations. When closing, the elastic force of the double torsion spring can offset the impact force of the cover falling, avoiding damage to the components caused by hard collision between the inner cover 21, the outer cover 22 and the upper shell 11, while ensuring that the cover closes slowly, preventing instantaneous noise caused by collision.

[0026] As a further preferred embodiment, the control component 7 includes a display control circuit board 71, a driver board 72, a power socket with switch 73, and a built-in power board 74. The driver board 72, the display control circuit board 71, and the built-in power board 74 are all fixed inside the upper shell 11. The power socket with switch 73 is fixed to the outer side wall of the lower shell 12. The driver board 72 is electrically connected to the high-speed motor 31, the cooling fan 41, the electromagnetic lock 25, the display control circuit board 71, the built-in power board 74, and the power socket with switch 73.

[0027] As a further preferred embodiment, the noise reduction component 5 is a soft silicone sealing ring with an F-shaped cross-section. The inner wall of the soft silicone sealing ring is fitted with the edge of the inner cover 21, and the outer wall is fitted with the inner wall of the upper shell opening 11. The height of the soft silicone sealing ring is greater than the gap width between the inner cover 21 and the upper shell opening 11.

[0028] Specifically, the F-shaped cross-section design of the noise reduction component 5 allows the inner wall of the soft silicone sealing ring to fit against the edge of the inner cover 21 and the outer wall to fit against the inner wall of the upper shell opening 111, forming a double sealing barrier to block the leakage path of wind noise.

[0029] As a further preferred embodiment, the control component also includes an emergency pull rope seat 9, which is fixed to the outer side wall of the lower shell 12. The emergency pull rope seat 9 is provided with a trigger switch, which is electrically connected to the display control circuit board 71.

[0030] Specifically, the emergency pull rope seat 9 is fixed in the pull rope hole of the lower shell 12. The trigger switch is directly electrically connected to the display control circuit board 71. When the electromagnetic lock 25 fails, the pull rope is pulled out from the pull rope hole of the lower shell 12. Once the pull rope is pulled, a stop signal is sent, and the double-layer cover assembly opens at the same time to prevent the equipment from being unable to be used normally after the electromagnetic lock 25 fails.

[0031] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A small high speed centrifuge characterized by, The centrifugal machine comprises a machine body, a double-layer cover assembly, a centrifugal working assembly, a cooling assembly, a noise reduction assembly and a shock absorption assembly. The machine body comprises an upper shell and a lower shell, and an opening is formed in the top of the upper shell. The double-layer cover assembly is connected to the opening of the upper shell through a hinged structure, and comprises an inner cover, an outer cover, a transparent window, a lock tongue and an electromagnetic lock. The centrifugal working assembly is arranged inside the machine body and comprises a high-speed motor, a motor fixing plate and a rotating disc. The cooling assembly is arranged at the side end of the high-speed motor for heat dissipation. The noise reduction assembly is fixed in the annular groove of the upper shell. The shock absorption assembly is arranged between the centrifugal working assembly and the lower shell to reduce the vibration generated during the operation of the centrifugal working assembly.

2. A small high speed centrifuge according to claim 1, characterized in that The cooling assembly comprises a cooling fan and a machine body heat dissipation hole.

3. A small high speed centrifuge according to claim 1, wherein The shock absorption assembly comprises a shock absorption column and a bearing bottom plate.

4. A small high speed centrifuge according to claim 1, characterized in that The hinged structure of the double-layer cover assembly comprises a stainless steel rod and a double-torsion spring.

5. A small high speed centrifuge according to claim 2, wherein The control assembly comprises a display control circuit board, a driving board, a power socket with a switch and an internal power board.

6. A small high speed centrifuge according to claim 1, characterized in that The noise reduction assembly is a soft silica gel sealing ring with an F-shaped cross section.

7. A small high speed centrifuge according to claim 5, wherein The control assembly further comprises an emergency pull rope seat. The control assembly is provided with a trigger switch.

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