Double-gear coupling self-changing speed-changing rotor device and application thereof

Abstract

The invention belongs to the technical field of centrifugal machines, and particularly relates to a double-gear coupling self-changing speed changing rotor device and application thereof. The device comprises a main shaft, a rotor disc, a main gear, an auxiliary gear, a motor, centrifugal position barrels, elastic telescopic rods and centrifugal tubes, the lower end of the main shaft is connected with the motor, the motor is used for driving the main shaft to rotate, the rotor disc and the main gear are arranged on the main shaft, a plurality of centrifugal position holes are formed in the rotor disc in the circumferential direction, and one centrifugal position barrel is inserted into each centrifugal position hole; the centrifugal position barrel is connected with the main shaft through an elastic telescopic rod; the elastic telescopic rod is used for controlling the centrifugal inclination angle of the centrifugal position barrel; a centrifugal tube is arranged in each centrifugal position barrel, the auxiliary gears are arranged on the centrifugal tubes, and the auxiliary gears are meshed with the main gears, so that the centrifugal tubes rotate while revolving along with the centrifugal position barrels. The rotation direction is changed through coupling of the two gears, rotation in a certain revolution mode is achieved, then different centrifugal angles are achieved, and the gas-liquid separation effect is improved.

Description

Technical Field

[0001] This invention belongs to the field of centrifuge technology, and specifically relates to a dual-gear coupled self-speculative rotor device and its application. Background Technology

[0002] Sample concentration and preparation, or sample dissolution and conversion, are crucial steps in the detection of life sciences, bioassays, food and pharmaceuticals, and environmental samples. The large amount of time spent on sample concentration and preparation constitutes a critical rate-control step. Commonly used methods include vacuum centrifugation, rotary evaporation, gas purging concentration, and constant-rate centrifugation. While existing technologies have optimized parameters and modified equipment for these methods, they rarely achieve coupled or integrated operation modes for these steps. This makes it difficult to fully realize the advantages of each method, thus creating bottlenecks in concentration and enrichment separation. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide a dual-gear coupled self-spinning rotor device and its application, thereby solving the bottleneck problems in concentration preparation and enrichment separation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This invention provides a dual-gear coupled self-rotating rotor device, comprising a main shaft, a rotor disk, a main gear, an auxiliary gear motor, centrifuge housings, an elastic telescopic rod, and centrifuge tubes. The lower end of the main shaft is connected to the motor, which drives the main shaft to rotate. The main shaft is equipped with a rotor disk and a main gear. The rotor disk has multiple centrifuge housing holes along its circumference, and a centrifuge housing is inserted into each centrifuge housing hole. The centrifuge housing is connected to the main shaft via an elastic telescopic rod, which controls the centrifugal tilt angle of the centrifuge housing. Each centrifuge housing contains a centrifuge tube, and an auxiliary gear is mounted on the centrifuge tube and meshes with the main gear, so that the centrifuge tube rotates on its own axis while revolving around the centrifuge housing.

[0006] Both the main gear and the auxiliary gear are helical bevel gears, and the auxiliary gear is arranged in reverse.

[0007] The driving teeth of the main gear and the driven teeth of the auxiliary gear are both outwardly convex arc-shaped structures, and the tooth groove of the main gear is narrow at the top and wide at the bottom, while the tooth groove of the auxiliary gear is wide at the top and narrow at the bottom.

[0008] The upper edge of the driven tooth of the auxiliary gear meshes with the lower edge of the driving tooth of the main gear.

[0009] The auxiliary gear has fewer teeth than the main gear.

[0010] The auxiliary gear is mounted on the centrifuge tube via a centrifuge tube connecting assembly, and the axis of the auxiliary gear is inclined at 10-30 degrees to the axis of the main gear.

[0011] The centrifuge tube connecting assembly includes a slide rail and a bearing, wherein the slide rail has an annular groove structure and is disposed on the inner wall of the auxiliary gear, and the bearing is housed in the slide rail;

[0012] The bearing includes a plurality of balls arranged circumferentially and a soft material wrapped around the outside of the plurality of balls, and the centrifuge tube is clamped by the bearing.

[0013] The upper end of the centrifuge tank is hinged to the main shaft; during centrifugation, the centrifuge tank achieves a tilt angle of 35-60 degrees.

[0014] When the main gear revolves, increasing the rotation speed of the main gear will generate an upward force, causing the auxiliary gear to slide upward until the rotation speeds of the main gear and the auxiliary gear are balanced, forming centrifugal operations with different tilt angles.

[0015] Another aspect of the present invention provides an application of the dual-gear coupled self-rotating rotor device as described above, which is used for sample preparation and concentration, realizing the coupling of rotary concentration and depressurized centrifugal concentration.

[0016] The advantages and positive effects of this invention are as follows: The dual-gear coupled self-rotating rotor device provided by this invention can be integrated and installed on various centrifuge devices in multiple modes to realize centrifugation, rotary evaporation and variable speed centrifugation and their coupled operations, providing more efficient concentration and enrichment for rapid solution concentration preparation for life science, biological detection, food and drug, environmental sample detection and other tests. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a dual-gear coupled self-spinning rotor device according to the present invention;

[0018] Figure 2 This is a schematic diagram of the rotor disk in this invention;

[0019] Figure 3 This is a schematic diagram of the elastic telescopic rod in this invention;

[0020] Figure 4 This is a schematic diagram of the bearing and slide rail structure in this invention;

[0021] Figure 5 This is a schematic diagram of the main gear in this invention;

[0022] Figure 6 This is a schematic diagram of the auxiliary gear in this invention.

[0023] In the diagram: 1. Main shaft; 2. Rotor disc; 3. Main gear; 4. Auxiliary gear; 5. Motor; 6. Centrifuge tank; 7. Elastic telescopic rod; 8. Bearing; 9. Slide rail; 10. Centrifuge tube; 13. Drive gear; 14. Driven gear. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] See Figures 1 to 6 As shown, an embodiment of the present invention provides a dual-gear coupled self-rotating rotor device, including a main shaft 1, a rotor disk 2, a main gear 3, an auxiliary gear 4, a motor 5, a centrifugal chamber 6, an elastic telescopic rod 7, and a centrifugal tube 10. The lower end of the main shaft 1 is connected to the motor 5, which drives the main shaft 1 to rotate. The main shaft 1 is provided with a rotor disk 2 and a main gear 3. The rotor disk 2 is provided with multiple centrifugal chamber holes along its circumference. A centrifugal chamber 6 is inserted into each centrifugal chamber hole. The centrifugal chamber 6 is connected to the main shaft 1 through the elastic telescopic rod 7, which is used to control the centrifugal tilt angle of the centrifugal chamber 6. Each centrifugal chamber 6 is provided with a centrifugal tube 10. The auxiliary gear 4 is disposed on the centrifugal tube 10 and meshes with the main gear 3, so that the centrifugal tube 10 rotates on its own axis while revolving around the centrifugal chamber 6.

[0026] See Figure 5 and Figure 6 As shown in the embodiment of the present invention, the main gear 3 is a helical bevel gear, and the lower part of the driving tooth 13 of the main gear 3 forms an acute angle of 55-70 degrees with the lower edge of the main gear 3. The tooth profile of the driving tooth 13 is an arc shape that wraps around the tooth surface, and each tooth is parallel or the tooth groove shape is narrow at the top and wide at the bottom for speed limiting.

[0027] The auxiliary gear 4 is an inverted helical bevel gear with a hollow structure, fixed to the lower part of the centrifuge tube 10. The axis of the auxiliary gear 4 is inclined at an angle of 10-30 degrees to the axis of the main gear 3. The driven tooth 14 of the auxiliary gear 4 and the driving tooth 13 of the main gear 3 have a curved convex shape in contact. The overall size of the auxiliary gear 4 is less than 1 / 4 of that of the main gear 3. The tooth groove of the auxiliary gear 4 is wider at the top and narrower at the bottom to fit the driving tooth 13 of the main gear 3. The driven tooth 14 can slide upward along the tooth groove of the main gear 3. The upper part of the driven tooth 14 forms an acute angle of 70-80 degrees with the upper edge of the auxiliary gear 4.

[0028] Furthermore, the upper edge of the driven tooth 14 of the auxiliary gear 4 meshes with the lower edge of the driving tooth 13 of the main gear 3.

[0029] Furthermore, the number of teeth of the auxiliary gear 4 is less than the number of teeth of the main gear 3; specifically, the number of teeth of the auxiliary gear 4 is less than 1 / 4 of the number of teeth of the main gear 3.

[0030] See Figure 4 As shown, in an embodiment of the present invention, the auxiliary gear 4 is mounted on the centrifuge tube 10 via a centrifuge tube connecting assembly, and the axis of the auxiliary gear 4 is inclined at 10-30 degrees to the axis of the main gear 3. The centrifuge tube connecting assembly includes a slide rail 9 and a bearing 8, wherein the slide rail 9 has an annular groove structure and is disposed on the inner wall of the auxiliary gear 4, and the bearing 8 is housed within the slide rail 9; the bearing 8 includes a plurality of balls arranged circumferentially and a soft material wrapped around the outside of the plurality of balls, and the centrifuge tube 10 is clamped by the bearing 8.

[0031] Furthermore, the upper end of the centrifuge tank 6 is hinged to the main shaft 1; during centrifugation, the elastic telescopic rod 7 controls the centrifuge tank 6 to achieve an inclination angle of 35-60 degrees. When the main gear 3 revolves, increasing the rotation speed of the main gear 3 will generate an upward force due to the inclination of the teeth, causing the auxiliary gear 4 to slide upward until the rotation speeds of the main gear 3 and the auxiliary gear 4 are balanced, thus forming centrifugation operations with different inclination angles.

[0032] The present invention provides a dual-gear coupled self-spinning rotor device, the working principle of which is as follows:

[0033] Motor 5 drives main shaft 1 to rotate, which in turn drives rotor disk 2 and main gear 3 to rotate together. During centrifugation, centrifuge tube 6 on rotor disk 2 moves up and down, controlled by elastic telescopic rod 7, thus achieving different tilt angles (35-60 degrees) between centrifuge tube 6 and main shaft 1. Main gear 3 drives auxiliary gear 4 to rotate in the opposite direction through tooth surface contact, and auxiliary gear 4 drives centrifuge tube 10 to rotate. As the speed of main gear 3 increases, it causes auxiliary gear 4 to slide upward through an upward angle force until the speeds of auxiliary gear 4 and main gear 3 reach equilibrium, forming centrifugation operations at different tilt angles, thereby creating a stronger centrifugal effect.

[0034] Furthermore, by connecting a vacuum concentration device at the revolution position and simply adding slide rails and rotor bearings to each centrifuge tank 6 and sealing them, independent vacuum concentration operations at different positions can be achieved. Under the condition that independent evaporation liquid surfaces are formed by self-rotation, the concentration efficiency is increased while avoiding cross-contamination.

[0035] Furthermore, it enables the coupling of rotary concentration and vacuum centrifugation concentration for sample preparation and concentration. In different centrifugation configurations and sample preparation methods, not limited to step-by-step operations and modular applications, automated coupling and integration can be used to achieve independent sample enrichment and concentration, improving sample concentration and preparation efficiency.

[0036] Based on the above embodiments, another embodiment of the present invention provides an application of the dual-gear coupled self-rotating rotor device described above. This device is used for sample preparation and concentration, realizing the coupling of rotary concentration and reduced-pressure centrifugation concentration. The present invention can be integrated into various centrifuge devices in multiple modes to realize centrifugation, rotary evaporation, and variable-speed centrifugation, as well as their coupled operations, providing more efficient concentration and enrichment capabilities for rapid solution concentration preparation in life sciences, biological detection, food and pharmaceutical, and environmental sample testing.

[0037] Example 1

[0038] The main gear 3 and auxiliary gear 4 are machined. The main gear 3 has a tooth tip radius of 1cm, a tooth root radius of 2cm, and a central angle of 40 degrees for the overall tooth groove arc. The auxiliary gear 4 has a tooth tip radius of 0.2cm, a tooth root radius of 0.5cm, and a central angle of 10 degrees for the overall tooth groove arc. The axis of the auxiliary gear 4 is 10 degrees from that of the main gear 3. The main gear 3 is fixed to the main shaft 1, and the maximum centrifugal speed is 15,000 rpm. Specific experimental parameters are shown in the table below.

[0039]

[0040] This device achieves the rotation of the centrifuge tube 10 based on the revolution of the rotor disk 2 via the main gear 3, and the rotation of the centrifuge tube 10 is driven by the auxiliary gear 4. Its rotational speed is mainly affected by the number of teeth and the size of the gear. In this design, the number of teeth of the auxiliary gear 4 is only 1 / 4 of that of the main gear 3, resulting in a smaller rotational speed. In practical applications, the speed can be calculated and determined according to specific requirements. Furthermore, experiments have shown that as the revolution speed of the main gear 3 increases, the centrifugal angle of the centrifuge tube 10 driven by the auxiliary gear 4 can be increased. The curved design of the gear teeth allows the auxiliary gear 4 to slide upwards along the groove of the main gear 3, thereby achieving centrifugation and rotation at different centrifugal angles.

[0041] Example 2

[0042] Machining of main gear 3 and auxiliary gear 4: The main gear 3 has a tooth tip radius of 1cm, a tooth root radius of 2cm, and a tooth groove central angle of 40 degrees; the auxiliary gear 4 has a tooth tip radius (center to outer edge) of 2.5cm, a tooth root radius (center to outer edge) of 3.0cm, a tooth groove central angle of 10 degrees, and an angle of 10 degrees between the axes of auxiliary gear 4 and main gear 3. The number of teeth in auxiliary gear 4 is 1 / 5 of the number of teeth in main gear 3. Main gear 3 is fixed to main shaft 1, with a maximum centrifugal speed of 15000 rpm. A 15mL plastic centrifuge tube 10 is inserted into auxiliary gear 4. A rotor bearing and slide rail are fitted onto the upper part of centrifuge tube 10, and a pressure reducing device is connected to the upper part. The pressure reducing connection tube can rotate with the centrifugal revolution. 2mL of ethanol is added to centrifuge tube 10. Operation at room temperature. Specific experimental parameters are shown in the table below.

[0043]

[0044] The data above shows that the evaporation efficiency is significantly improved compared to the conventional method. It can be expected that a greater improvement will be achieved based on changes in temperature control and rotation speed.

[0045] This invention addresses the bottleneck problem in sample concentration and preparation by conducting fractal research on the coupling effect in related steps. It discovers that the concentration methods can be combined through mechanical direction change, achieving an innovative change in the principles of concentration and sample preparation. High-speed centrifugal coupling, compared to high-speed rotation-dominated liquid film formation, effectively improves the gas-liquid mass transfer and liquid evaporation rates. At the same temperature, it can rapidly achieve liquid dissipation, resulting in highly efficient substance concentration. Furthermore, different centrifugal angles at high speeds can also achieve centrifugal separation. Additionally, the variable-speed rotation mode further enhances the efficiency of evaporation and concentration. Specifically, this is achieved by changing the direction of rotation through the coupling of two gears, realizing rotation within a certain revolution mode. Simultaneously, by utilizing the rational design of the gear teeth, different centrifugal angles are achieved through varying coupling forces resulting from different rotation speeds, thus achieving different centrifugal separation capabilities and improving the gas-liquid separation effect.

[0046] The above description is merely an embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, extensions, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A dual-gear coupled self-spinning rotor device, characterized in that, The system includes a main shaft (1), a rotor disk (2), a main gear (3), an auxiliary gear (4), a motor (5), a centrifuge tank (6), an elastic telescopic rod (7), and a centrifuge tube (10). The lower end of the main shaft (1) is connected to the motor (5), which drives the main shaft (1) to rotate. The main shaft (1) is equipped with a rotor disk (2) and a main gear (3). The rotor disk (2) is provided with multiple centrifuge holes along the circumference. A centrifuge tank (6) is inserted into each centrifuge hole. The centrifuge tank (6) is connected to the main shaft (1) through the elastic telescopic rod (7), which is used to control the centrifugal tilt angle of the centrifuge tank (6). Each centrifuge tank (6) is equipped with a centrifuge tube (10). The auxiliary gear (4) is set on the centrifuge tube (10) and meshes with the main gear (3), so that the centrifuge tube (10) rotates on its own axis while revolving around the centrifuge tank (6).

2. The dual-gear coupled self-rotating rotor device according to claim 1, characterized in that, Both the main gear (3) and the auxiliary gear (4) are helical bevel gears, and the auxiliary gear (4) is arranged in reverse.

3. The dual-gear coupled self-rotating rotor device according to claim 2, characterized in that, The driving teeth (13) of the main gear (3) and the driven teeth (14) of the auxiliary gear (4) are both outwardly convex arc-shaped structures, and the tooth groove of the main gear (3) is narrow at the top and wide at the bottom, while the tooth groove of the auxiliary gear (4) is wide at the top and narrow at the bottom. The upper edge of the driven tooth (14) of the auxiliary gear (4) meshes with the lower edge of the driving tooth (13) of the main gear (3).

4. The dual-gear coupled self-spinning rotor device according to claim 2, characterized in that, The number of teeth of the auxiliary gear (4) is less than the number of teeth of the main gear (3).

5. The dual-gear coupled self-rotating rotor device according to claim 1, characterized in that, The auxiliary gear (4) is mounted on the centrifuge tube (10) through a centrifuge tube connecting assembly, and the axis of the auxiliary gear (4) is inclined at 10-30 degrees to the axis of the main gear (3).

6. The dual-gear coupled self-spinning rotor device according to claim 5, characterized in that, The centrifuge tube connecting assembly includes a slide rail (9) and a bearing (8), wherein the slide rail (9) is an annular groove structure and is disposed on the inner wall of the auxiliary gear (4), and the bearing (8) is housed in the slide rail (9); The bearing (8) includes a plurality of balls arranged circumferentially and a soft material wrapped around the outside of the plurality of balls, and the centrifuge tube (10) is clamped by the bearing (8).

7. The dual-gear coupled self-speed rotating rotor device according to claim 1, characterized in that, The upper end of the centrifuge tank (6) is hinged to the main shaft (1); during centrifugation, the centrifuge tank (6) achieves a tilt angle of 35-60 degrees.

8. The dual-gear coupled self-rotating rotor device according to claim 1, characterized in that, When the main gear (3) revolves, increasing the rotation speed of the main gear (3) will generate an upward force, causing the auxiliary gear (4) to slide upward until the rotation speeds of the main gear (3) and the auxiliary gear (4) are balanced, forming centrifugal operations with different tilt angles.

9. An application of the dual-gear coupled self-speed rotating rotor device as described in any one of claims 1-8, characterized in that, This device is used for sample preparation and concentration, achieving the coupling of rotary concentration and vacuum centrifugation concentration.

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