Rotating speed calibrator of superspeed centrifuge

Abstract

The utility model provides a rotating speed calibrator for an ultra-high-speed centrifuge, which solves the problems of difficulty in positioning a centrifugal frame, inaccurate positioning and the like of the existing centrifugal equipment, and adopts the scheme that the rotating speed calibrator comprises a box body, and the box body is provided with a driving assembly, a centrifugal turntable, a transfer table and a self-centering calibration assembly from bottom to top along the middle axis of the box body, the driving assembly is of a worm and gear structure and is used for driving the centrifugal rotary table in a gear meshing mode, the centrifugal rotary table is rotationally connected with the outer wall of the bottom of the transfer table through a bearing seat, a bearing table is further annularly arranged on the portion, located on the outer wall of the top of the transfer table, of the box body, and the self-centering calibration assembly comprises a clamping jaw, a servo air cylinder, a synchronous rod and a transmission part. The three sets of clamping jaws are located on the inner wall of the transfer table and annularly arranged around the center of the transfer table, the inner wall of the transfer table is in sliding contact with the outer walls of the clamping jaws, calibration holes are formed in the annularly-connected inner walls of the three sets of clamping jaws, and the synchronous rod drives the three sets of clamping jaws to slide on the transfer table along the sliding grooves through a transmission piece.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal equipment, in particular to a speed calibrator for an ultra-high-speed centrifuge. Background Art

[0002] Centrifuges are mainly used to separate solid particles from liquid in suspension; or to separate two immiscible liquids of different densities in an emulsion (such as separating cream from milk); it can also be used to remove liquid from wet solids.

[0003] The centrifuge equipment currently used in biological experiments generally has a bottom-mounted rotating motor and a centrifuge rack capable of accommodating test tubes for centrifugal operation. However, most existing centrifuge racks are directly positioned on the centrifuge turntable by screws or welding. This method is firstly limited in that the welding position is fixed, which is inconvenient when placing the centrifuge test tubes, etc. in the subsequent process. Secondly, the screw fixing method is affected by human operation, which is prone to inaccurate calibration of the center of the centrifuge rack. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art. The utility model proposes an ultra-high-speed centrifuge speed calibrator capable of self-centering, calibration and positioning.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an ultra-high-speed centrifuge speed calibrator, comprising: a box body, the box body is provided with a driving assembly, a centrifugal turntable, a turntable and a self-centering calibration assembly along its axis from bottom to top, the driving assembly is a worm gear structure, which is used for gear meshing transmission of the centrifugal turntable, the centrifugal turntable is rotatably connected to the outer wall of the bottom of the turntable through a bearing seat, the box body is also provided with a receiving platform on the outer wall of the top of the turntable, the self-centering calibration assembly includes a claw, a servo cylinder, a synchronization rod and a transmission member, the claws include three groups and are located on the inner wall of the turntable and are arranged in a ring around the center of the turntable, the inner wall of the turntable is in sliding contact with the outer wall of the claws, the three groups of claws are formed with calibration holes on the inner wall of the ring, and a slide groove with a slope for sliding connection to the turntable is opened on the outer wall, the bottom end of the servo cylinder is hinged to the outer wall of the box body, and the top output end is vertically fixed to the synchronization rod, the synchronization rod is arranged opposite to the slide groove, and the three groups of claws are driven by the transmission member at one end close to the slide groove to slide on the turntable along the slide groove.

[0006] Furthermore, the drive assembly includes a worm wheel, a worm and a servo motor. The servo motor is fixedly connected to the outer wall of the casing, and its output end is coaxially fixed with the worm. The worm is meshing with the worm wheel. A helical gear is coaxially fixed to the center of the worm wheel, and a tooth groove meshing with the helical gear is opened on the outer periphery of the centrifugal turntable.

[0007] Furthermore, a fixed ring, a clamping ring and a connecting platform are provided between the synchronization rod and the transmission member. The center of one end of the connecting platform is connected and fixed to the synchronization rod, and the other end is fixedly clamped by two opposite clamping rings. The three groups of claws also have vertically protruding extensions at the bottom centers of the corresponding slide grooves to pass through the transfer table.

[0008] Furthermore, the transmission member includes three and respectively corresponds to three groups of claws, each of the transmission members includes a telescopic rod and a spring, one end of the telescopic rod coaxially slides in the extension part, and the other end is connected and fixed to the inner wall of the ring, the spring is covered on the telescopic rod, one end of the spring is connected and fixed to the top of the extension part, and the other end is connected and fixed to the inner wall of the ring.

[0009] Furthermore, the inner wall of the calibration hole is used to clamp and position with the external centrifugal frame extension.

[0010] Compared with the prior art, the beneficial effects of the utility model include: the center positioning and release of the bottom end of the external centrifugal frame can be achieved by cooperating with the external cylinder displacement of the three claws, and the self-centering calibration component is used to pre-center the bottom end of the centrifugal frame, and then the bolt positioning is performed through each positioning hole of the centrifugal turntable corresponding to the centrifugal frame, which is convenient and practical, and greatly improves the positioning accuracy of the center position of the subsequent centrifugal equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0012] Figure 1 Schematically shows an isometric structural diagram proposed according to one embodiment of the utility model;

[0013] Figure 2 Schematically shows a front view according to an embodiment of the utility model;

[0014] Figure 3 Schematically shows a method according to an embodiment of the present invention. Figure 2 AA section view;

[0015] Figure 4 Schematically shows a method according to an embodiment of the present invention. Figure 2 BB section view.

[0016] Numbers in the figure: 1. Box; 2. Drive assembly; 3. Centrifugal turntable; 4. Turntable; 5. Self-centering calibration assembly; 6. Bearing seat; 7. Clamping claw; 8. Servo cylinder; 9. Synchronous rod; 10. Transmission member; 11. Calibration hole; 12. Slide groove; 13. Worm gear; 14. Worm; 15. Servo motor; 16. Bevel gear; 17. Tooth groove; 18. Ring; 19. Clamping table; 20. Connecting table; 21. Extension; 22. Telescopic rod; 23. Spring. DETAILED DESCRIPTION

[0017] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0018] According to one embodiment of the present invention, Figure 1-Figure 4 Shown.

[0019] An ultra-high-speed centrifuge speed calibrator comprises: a box body 1, wherein the box body 1 is provided with a driving assembly 2, a centrifugal turntable 3, a transfer table 4 and a self-centering calibration assembly 5 along its axis from bottom to top, wherein the driving assembly 2 is a worm gear 13 and a worm 14 structure, which is used for gear meshing transmission of the centrifugal turntable 3, wherein the centrifugal turntable 3 is rotatably connected to the outer wall of the bottom of the transfer table 4 through a bearing seat 6, wherein the box body 1 is further provided with a receiving platform on the outer wall of the top of the transfer table 4, wherein the self-centering calibration assembly 5 comprises a clamping claw 7, a servo cylinder 8, a synchronization rod 9 and a transmission member 10, wherein the clamping claw 7 comprises Three groups are located on the inner wall of the turntable 4 and are arranged in a ring around the center of the turntable 4. The inner wall of the turntable 4 is in sliding contact with the outer wall of the claws 7. The three groups of claws 7 are formed with calibration holes 11 on the inner wall of the ring, and a slide groove 12 with a slope for sliding connection to the turntable 4 is opened on the outer wall. The bottom end of the servo cylinder 8 is hinged to the outer wall of the box body 1, and the top output end is vertically fixed to the synchronization rod 9. The synchronization rod 9 is arranged opposite to the slide groove 12, and the three groups of claws 7 are driven by the transmission member 10 at one end close to the slide groove 12 to slide on the turntable 4 along the slide groove 12.

[0020] Furthermore, the driving assembly 2 includes a worm wheel 13, a worm 14 and a servo motor 15. The servo motor 15 is fixedly connected to the outer wall of the box body 1, and its output end is coaxially fixed with the worm 14. The worm 14 is meshed with the worm wheel 13. A bevel gear 16 is coaxially fixed to the center of the worm wheel 13. A tooth groove 17 meshing with the bevel gear 16 is opened on the outer periphery of the centrifugal turntable 3.

[0021] Furthermore, a fixed ring, a clamping ring and a connecting platform 20 are provided between the synchronization rod 9 and the transmission member 10. The center of one end of the connecting platform 20 is connected and fixed to the synchronization rod 9, and the other end is fixedly clamped by two opposite clamping rings to clamp the ring 18. The three groups of claws 7 also have vertically protruding extensions 21 at the bottom centers of the corresponding slide grooves 12 to pass through the transfer table 4.

[0022] Further, the transmission member 10 includes three and respectively corresponds to three groups of the claws 7, each of the transmission members 10 includes a telescopic rod 22 and a spring 23, one end of the telescopic rod 22 coaxially slides in the extension portion 21, and the other end is connected and fixed to the inner wall of the ring, and the spring 23 is coated on the telescopic rod 22, one end of which is connected and fixed to the top of the extension portion 21, and the other end is connected and fixed to the inner wall of the ring. The inner wall of the calibration hole 11 is used to clamp and position with the external centrifugal frame extension portion 21.

[0023] Through the above-mentioned structural layout, the centrifugal structure in the present application is to achieve the speed required for subsequent centrifugation by the driving assembly 2 of the worm wheel 13 and the worm 14 engaging with the bevel gear 16 to drive a centrifugal turntable 3, and the center of the centrifugal turntable 3 is hollowed out to calibrate the center position of the subsequent centrifugal rack. However, most of the existing centrifugal racks are directly positioned on the centrifugal turntable 3 by screws or fixed welding. This method is firstly fixed by fixed welding position, which is relatively limited, and there is inconvenience in placing subsequent centrifugal test tubes, etc., and secondly, the screw fixing method is affected by human operation, which is prone to inaccurate calibration of the center of the centrifugal rack.

[0024] In order to solve the above problems, the present application realizes the convergence calibration of the three claws 7 toward the center through a self-centering calibration component 5. Specifically, the three claws 7 are grooved on the back and the grooves 12 have a certain slope. The inside can be aligned and spliced ​​into a calibration hole 11 to facilitate the subsequent clamping and positioning of the bottom end of the external centrifugal frame. In the actual calibration process, the servo cylinder 8 hinged on the outer wall of the box body 1 outputs upward, driving the synchronization rod 9 perpendicular to its output end to swing up and down slightly, and the synchronization rod 9 then cooperates to drive the ring 18, and the inner wall of the ring 18 is pre-arranged with three groups of transmission members 10 corresponding to the grooves 12 on the back of the three claws 7, that is, a spring 23 can be used to move the transmission members 10 at the claws 7. The telescopic rod 22 in the corresponding extension part 21 is telescopic, and after the ring 18 is lifted upward, the three claws 7 can move up and down with the slope of the slide groove 12 under the coordinated drive of the telescopic rod 22. During the upward process, the spring 23 is compressed due to the slope, that is, the three claws 7 are pushed in the opposite direction to gather in the middle. On the contrary, the spring 23 is relaxed during the downward movement, and the calibration hole 11 is relaxed, thereby realizing the center positioning and release of the bottom end of the external centrifuge frame. By using the self-centering calibration component 5, the bottom end of the centrifuge frame can be calibrated in advance, and then the bolt positioning is performed through each positioning hole of the centrifugal turntable 3 corresponding to the centrifugal frame, which is convenient and practical, and greatly improves the positioning accuracy of the center position of the subsequent centrifugal equipment.

[0025] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. An ultra-high speed centrifuge speed calibrator, characterized in that: include: The transmission element is a toothed structure, the toothed structure being connected to the gear train by a toothed wheel, and the toothed wheel being connected to the gear train by a toothed wheel.

2. The ultra-high speed centrifuge speed calibrator according to claim 1, characterized in that: The driving assembly includes a worm wheel, a worm and a servo motor. The servo motor is fixedly connected to the outer wall of the casing, and its output end is coaxially fixed with the worm. The worm is meshed with the worm wheel. A helical gear is coaxially fixed to the center of the worm wheel. A tooth groove meshing with the helical gear is opened on the outer periphery of the centrifugal turntable.

3. The ultra-high speed centrifuge speed calibrator according to claim 1, characterized in that: A circular ring, a clamping ring and a connecting platform are also provided between the synchronization rod and the transmission member. The center of one end of the connecting platform is connected and fixed to the synchronization rod, and the other end is fixed to the circular ring by two opposite clamping rings. The three groups of claws also have vertical protrusions with extensions at the bottom center of the corresponding slide grooves to pass through the transfer table.

4. The ultra-high speed centrifuge speed calibrator according to claim 3, characterized in that: The transmission members include three and correspond to three groups of claws respectively, each of the transmission members includes a telescopic rod and a spring, one end of the telescopic rod coaxially slides in the extension part, and the other end is connected and fixed to the inner wall of the ring, the spring is covered on the telescopic rod, one end of the spring is connected and fixed to the top of the extension part, and the other end is connected and fixed to the inner wall of the ring.

5. The ultra-high speed centrifuge speed calibrator according to claim 1, characterized in that: The inner wall of the calibration hole is used to clamp and position with the external centrifugal frame extension part.

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