A high speed centrifuge rotor

Abstract

This utility model relates to the field of centrifuge technology, specifically a high-speed centrifuge turntable. It includes an upper turntable, a lower turntable, and a drive component connected to the upper turntable. The upper turntable has several sets of mounting tube holes arranged in a circular array on its end face, and upper limit slots arranged in a circular array on its lower end face. Each set of mounting tube holes is directly below an upper limit slot. The lower turntable has a through-hole in its center and a lower limit slot on its outer end face that matches the upper limit slot. The upper and lower turntables are coaxially positioned via a connecting mechanism. The output end of the drive component is fixedly connected to the center of the upper turntable, enabling it to drive the upper turntable to synchronously rotate the lower turntable at high speed. The upper and lower turntables of this utility model form an enclosed structure through the interlocking of the upper and lower limit slots. Combined with the buffer design of the inner wall of the mounting tube holes, this provides double protection for the centrifuge tubes, effectively preventing tube breakage due to collisions and vibrations during high-speed rotation.

Description

Technical Field

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

[0002] A centrifuge is a machine that uses centrifugal force to separate components in a mixture of liquids and solid particles or liquids. It is mainly used to separate solid particles from liquids in suspensions, or to separate two immiscible liquids of different densities in emulsions. It can also be used to remove liquid from wet solids, such as in a washing machine for spinning wet clothes. Special high-speed tubular centrifuges can also separate gas mixtures of different densities. Utilizing the different settling velocities of solid particles of different densities or sizes in liquids, some sedimentation centrifuges can also classify solid particles according to density or size.

[0003] During the operation of a laboratory centrifuge, the centrifuge disc, as the core component that supports the centrifuge tubes and enables high-speed rotation, directly affects centrifugation efficiency, experimental safety, and equipment stability. Current technologies for centrifuge discs present several problems that urgently need to be addressed:

[0004] 1. From a structural protection perspective, traditional turntables have a relatively simple method of fixing centrifuge tubes, often relying on a single support hole, lacking full-enclosed protection for the outer wall of the test tubes. During high-speed rotation, centrifuge tubes are prone to rigid collisions with the hole wall due to vibration, or uneven stress on the tube body due to slight shaking of the equipment, which can lead to breakage and leakage of experimental liquids. This not only affects the accuracy of experimental results but may also pose safety hazards due to the leakage of corrosive or biological liquids.

[0005] 2. In terms of structural rigidity and transmission accuracy, most existing turntables are single injection-molded structures and lack targeted reinforcement designs. When rotating at high speed, the radial stress generated by centrifugal force can easily cause deformation of the turntable edge, affecting the overall balance. Utility Model Content

[0006] This invention provides a high-speed centrifuge turntable to address the problems of existing technologies.

[0007] The objective of this utility model can be achieved through the following technical solution: A high-speed centrifuge turntable includes an upper turntable, a lower turntable, and a driving component connected to the upper turntable. The upper turntable has several sets of mounting pipe holes arranged in a circular array on its end face, and upper limit slots arranged in a circular array on its lower end face. Each set of mounting pipe holes is directly below the upper limit slot. The lower turntable has a through-hole in its center and a lower limit slot that matches the upper limit slot on its outer end face. The upper and lower turntables are coaxially positioned by a connecting mechanism. The output end of the driving component is fixedly connected to the center position of the upper turntable, which can drive the upper turntable to drive the lower turntable to rotate synchronously at high speed.

[0008] In a further improvement, the connecting mechanism includes a mounting post one disposed on the lower end face of the upper turntable and a mounting post two disposed on the upper end face of the lower turntable and corresponding to the mounting post one. A mounting bolt can be inserted into the lower end of the mounting post two, and the threaded part of the mounting bolt can be threadedly connected to the mounting post one to fix the upper turntable and the lower turntable.

[0009] As a further improvement, at least two sets of reinforcing ribs are provided on the lower end face of the upper turntable and the upper end face of the lower turntable.

[0010] In a further improvement, a limiting mechanism is provided between the upper turntable and the lower turntable. The limiting mechanism includes a support groove provided on the outer side of the lower end face of the upper turntable and a support pin provided on the outer side of the upper end face of the lower turntable. The support pin and the support groove are provided in corresponding order, and multiple sets of each are provided.

[0011] In a further improvement, a clearance groove is provided on the outer side of the lower end face of the turntable, and a positioning protrusion corresponding to the clearance groove is provided on the outer side of the upper end face of the lower turntable.

[0012] In a further improvement, a transmission hole is provided in the middle of the upper turntable, and a limiting groove extending axially is provided on the inner wall of the transmission hole. A limiting groove second, which is adapted to the limiting groove first, is provided on the outer side of the driving component.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The upper and lower turntables of this utility model form an enclosed structure by the interlocking of the upper and lower limit grooves. Combined with the buffer design of the inner wall of the mounting tube hole, it provides double protection for the centrifuge tube, effectively preventing the test tube from breaking due to collision and vibration during high-speed rotation, and solving the problem of the lack of outer wall protection for test tubes in the prior art.

[0015] 2. The connection mechanism of this utility model adopts a threaded connection method of "installation column one + installation column two + stainless steel bolt". Compared with traditional ultrasonic welding (which is prone to loosening due to uneven strength) or snap-fit ​​fixing (which is prone to falling off at high speed), the connection strength is higher and can withstand centrifugal force at higher speeds, ensuring no relative displacement between the upper and lower turntables and ensuring structural stability during high-speed operation.

[0016] 3. The radial reinforcing ribs on the upper and lower turntables of this utility model are integrally injection molded, which can disperse the radial stress during high-speed rotation, prevent the turntable from deforming after long-term use, and extend the service life of the equipment; at the same time, no additional processing is required, thus controlling production costs.

[0017] 4. The support groove and support pin of the limiting mechanism of this utility model not only restrict the relative circumferential rotation of the upper and lower turntables, but also serve as an assembly positioning reference, shortening the alignment time; the trapezoidal interlocking structure of the clearance groove and the positioning convex ring enables the upper and lower turntables to be quickly coaxially positioned, reducing assembly errors and lowering the risk of eccentric vibration. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an exploded view of the present invention;

[0020] Figure 3 This is a schematic diagram of the upper turntable of this utility model;

[0021] Figure 4 This is a cross-sectional view of the present invention.

[0022] In the diagram, 1. Upper turntable; 11. Mounting pipe hole; 12. Upper limit groove; 13. Transmission hole; 131. Limiting groove one; 2. Lower turntable; 21. Transmission hole; 22. Lower limit groove; 3. Driving component; 31. Limiting groove two; 4. Connecting mechanism; 41. Mounting post one; 42. Mounting post two; 5. Reinforcing rib; 6. Limiting mechanism; 61. Support groove; 62. Support pin; 71. Clearance groove; 72. Positioning convex ring. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] The following is a description of the embodiments and appendices. Figures 1-4 The technical solution of this utility model will be further described below. Example 1

[0026] A high-speed centrifuge turntable includes an upper turntable 1, a lower turntable 2, and a drive component 3 that is connected to the upper turntable 1. The upper turntable 1 has several sets of mounting pipe holes 11 arranged in a circular array on its end face, and upper limit slots 12 arranged in a circular array on its lower end face. Each set of mounting pipe holes 11 is directly below an upper limit slot 12. The lower turntable 2 has a through-hole 21 in its middle and a lower limit slot 22 that matches the upper limit slot 12 on its outer end face. The upper turntable 1 and the lower turntable 2 are coaxially positioned by a connecting mechanism 4. The output end of the drive component 3 is fixedly connected to the center position of the upper turntable 1, which can drive the upper turntable 1 to drive the lower turntable 2 to rotate synchronously at high speed.

[0027] like Figures 1-4 As shown, in actual use, the present invention first aligns the upper turntable 1 and the lower turntable 2, and tightens the bolts of the connecting mechanism 4 through the corresponding holes on the edges of both to form a rigid and closed whole. Then, the output end of the drive component 3 is fixed to the center of the upper turntable 1 to ensure that the output shaft coincides with the axis of the turntable to avoid eccentricity. Next, centrifuge tubes containing liquids to be separated are placed one by one into the mounting holes 11 of the upper turntable 1, so that the outer wall of the centrifuge tube is in contact with the buffer structure inside the hole, the tube body is perpendicular to the end face of the turntable, and they need to be placed symmetrically to balance the force and prevent shaking during high-speed rotation. Then, the centrifuge door is closed, the speed and centrifugation time are set, and the drive mechanism is started. The drive component 3 drives the upper turntable 1 to rotate, and the lower turntable 2 rotates synchronously at high speed with the connecting mechanism 4. The centrifuge tubes complete liquid-solid or liquid-liquid separation under the action of centrifugal force. During the process, the upper limit groove 12 and the lower limit groove 22 are engaged to limit relative displacement, and the bolts are used to fix the overall stability to avoid the centrifuge tubes from breaking due to vibration and collision.

[0028] This utility model forms an enclosed protection by using the upper turntable 1 and the lower turntable 2 through the interlocking structure of the upper limit groove 12 and the lower limit groove 22. Combined with the buffer design of the inner wall of the mounting tube hole 11, it provides double protection for the centrifuge tube and effectively avoids the test tube from breaking due to collision and vibration during high-speed rotation.

[0029] As a further preferred embodiment, the connecting mechanism 4 includes a mounting post 41 disposed on the lower end face of the upper turntable 1 and a mounting post 42 disposed on the upper end face of the lower turntable 2 and corresponding to the mounting post 41. A mounting bolt can be inserted into the lower end of the mounting post 42, and the threaded part of the mounting bolt can be threadedly connected to the mounting post 41 to fix the upper turntable 1 and the lower turntable 2.

[0030] Specifically, during assembly, align the mounting post 41 of the upper turntable 1 with the mounting post 42 of the lower turntable 2 so that the two fit together; insert the mounting bolt into the stepped hole of the mounting post 42 from below the lower turntable 2, and screw the threaded part of the bolt into the internal threaded hole of the mounting post 41. After tightening, the bolt head is locked into the stepped hole, thus achieving rigid fixation of the upper turntable 1 and the lower turntable 2.

[0031] The threaded connection structure using "mounting column + stainless steel bolts" offers higher connection strength compared to existing ultrasonic welding technologies, which are prone to loosening due to uneven welding strength or falling off during high-speed rotation due to clip fixation. It can withstand centrifugal force at higher speeds, ensuring no relative displacement between the upper and lower turntables during high-speed operation.

[0032] As a further preferred embodiment, at least two sets of reinforcing ribs 5 are provided on the lower end face of the upper turntable 1 and the upper end face of the lower turntable 2.

[0033] Specifically, at least two sets of reinforcing ribs 5 are symmetrically arranged radially around the center of the lower end face of the upper turntable 1 and the upper end face of the lower turntable 2. The reinforcing ribs 5 are made of the same high-strength engineering plastic material as the turntable body, are integrally injection molded with the turntable, and extend radially from the center of the turntable to the edge.

[0034] After the upper and lower turntables are assembled, the reinforcing ribs 5 do not contact each other but are staggered in position. This does not affect the fastening of the two, and can enhance the overall structural rigidity of the upper turntable 1 and the lower turntable 2 respectively. When rotating at high speed, the reinforcing ribs 5 can disperse the radial stress of centrifugal force on the turntable and prevent the turntable from deforming due to long-term high-speed operation. At the same time, the reinforcing ribs 5 are injection molded, which does not require additional processing steps and controls production costs.

[0035] As a further preferred embodiment, a limiting mechanism 6 is provided between the upper turntable 1 and the lower turntable 2. The limiting mechanism 6 includes a support groove 61 provided on the outer side of the lower end face of the upper turntable 1 and a support pin 62 provided on the outer side of the upper end face of the lower turntable 2. The support pin 62 and the support groove 61 are provided in corresponding order, and multiple sets of each are provided.

[0036] During assembly, align the upper turntable 1 with the lower turntable 2, align the support pin 62 with the support groove 61 and insert it. At this time, the support pin 62 fits against the inner wall of the support groove 61, and with the fixing effect of the connecting mechanism 4, the relative circumferential rotation of the upper and lower turntables is further restricted. At the same time, the support pin 62 and the support groove 61 can support the bottom of the test tube. Combined with the enclosed protection of the upper limit groove 12 and the lower limit groove 22, the test tube is effectively prevented from breaking due to collision and vibration during high-speed rotation.

[0037] Furthermore, the alignment of the support pin 62 with the support groove 61 effectively enhances the strength of the upper turntable 1 and the lower turntable 2.

[0038] As a further preferred embodiment, a clearance groove 71 is provided on the outer side of the lower end face of the turntable 1, and a positioning protrusion 72 corresponding to the clearance groove 71 is provided on the outer side of the upper end face of the lower turntable 2.

[0039] Specifically, an annular clearance groove 71 is formed along the edge of the lower end face of the upper turntable 1. The groove has a trapezoidal cross-section, and an annular positioning protrusion 72 is provided at the corresponding position on the upper end face. The cross-section of the protrusion 72 is adapted to the trapezoidal structure of the clearance groove 71, and the height is consistent with the depth of the clearance groove 71. During assembly, as the upper turntable 1 and the lower turntable 2 are aligned, the positioning protrusion 72 gradually embeds into the clearance groove 71. After being fully engaged, the protrusion 72 and the groove are tightly fitted together, further restricting radial displacement. This, together with the connecting mechanism 4, enhances the overall sealing performance and reduces airflow disturbance during high-speed rotation.

[0040] As a further preferred embodiment, the upper turntable 1 is provided with a transmission hole 13 in the middle, the inner wall of the transmission hole 13 is provided with a limiting groove 131 extending axially, and the outer side of the driving member 3 is provided with a limiting groove 31 that is adapted to the limiting groove 131.

[0041] Specifically, the second limiting groove 31 and the first limiting groove 131 are aligned and fitted together, so that while satisfying the torque transmission, the relative slippage between the drive component 3 and the upper turntable 1 due to high-speed rotation is avoided, ensuring stable power transmission and assisting in positioning the coaxiality of the output shaft and the turntable.

[0042] 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 high-speed centrifuge turntable, characterized in that, The device includes an upper turntable, a lower turntable, and a driving component connected to the upper turntable. The upper turntable has several sets of mounting holes arranged in a circular array on its end face, and upper limit slots arranged in a circular array on its lower end face. Each set of mounting holes is directly below an upper limit slot. The lower turntable has a through-hole in its center and a lower limit slot that matches the upper limit slot on its outer end face. The upper and lower turntables are coaxially positioned by a connecting mechanism. The output end of the driving component is fixedly connected to the center of the upper turntable, and can drive the upper turntable to drive the lower turntable to rotate synchronously at high speed.

2. The high-speed centrifuge turntable according to claim 1, characterized in that, The connecting mechanism includes a mounting post one disposed on the lower end face of the upper turntable and a mounting post two disposed on the upper end face of the lower turntable and corresponding to the mounting post one. A mounting bolt can be inserted into the lower end of the mounting post two, and the threaded part of the mounting bolt can be threadedly connected to the mounting post one to fix the upper turntable and the lower turntable.

3. A high-speed centrifuge turntable according to claim 1, characterized in that, At least two sets of reinforcing ribs are provided on the lower end face of the upper turntable and the upper end face of the lower turntable.

4. A high-speed centrifuge turntable according to claim 1, characterized in that, A limiting mechanism is provided between the upper turntable and the lower turntable. The limiting mechanism includes a support groove provided on the outer side of the lower end face of the upper turntable and a support pin provided on the outer side of the upper end face of the lower turntable. The support pin and the support groove are provided in corresponding order, and multiple sets of each are provided.

5. A high-speed centrifuge turntable according to claim 1 or 4, characterized in that, An clearance groove is provided on the outer side of the lower end face of the turntable, and a positioning protrusion corresponding to the clearance groove is provided on the outer side of the upper end face of the lower turntable.

6. A high-speed centrifuge turntable according to claim 1, characterized in that, The upper turntable has a transmission hole in the middle, and the inner wall of the transmission hole has a limiting groove extending axially. The outer side of the drive component has a limiting groove that matches the limiting groove.

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