CN212349129U - Centrifugal rotor and centrifugal machine - Google Patents

Abstract

The utility model relates to a centrifugal rotor and a centrifugal machine thereof, which comprises a main body with a bottom wall and a side wall; at least two hole groups, wherein the plurality of hole groups are circumferentially and symmetrically arranged on the main body; each group of holes comprises: a first hole disposed through the bottom wall; a second hole disposed through the sidewall; the second hole of each hole group is communicated with the first hole to form a long slotted hole. The centrifugal tube has the advantages that under the static condition, the centrifugal tube is vertically inserted into the first end of the first hole and is kept fixed, so that the centrifugal tube is convenient to clamp; under the pivoted condition, under the effect of centrifugal force, the centrifuging tube slides to the second end in second hole along the punch combination to be in the horizontal direction, at this moment, the axis of centrifuging tube can infinitely be close in the direction of centrifugal force and gravity resultant force, and the centrifuging tube solution that the bottom has the punch combination of being convenient for is thrown away from totally.

Description

Centrifugal rotor and centrifugal machine

Technical Field

The utility model relates to a centrifuge technical field especially relates to a centrifugal rotor and centrifuge.

Background

To accommodate different usage requirements, many manufacturers have developed many different types of centrifuges. Most conventional centrifuges are designed according to the weight of the centrifuge tube. However, in the field of biomedical technology, large-throughput operations for homogenization are required, and conventional centrifuges cannot meet such operational requirements. In addition, such high throughput operations, if they are manual operations only, are time consuming, labor intensive and inefficient.

Common centrifugal rotors include flail rotors and angle rotors. For the swing rotor, the direction of the central shaft of the centrifugal tube is changed due to stress, and the density gradient of the content in the centrifugal tube does not change (ideally, the density gradient is absolutely unchanged) relative to the position of the tube wall in the centrifugal process and after the centrifugation is finished, so that the required separation part can be conveniently moved after the centrifugation; for the angle type rotating head, the position of the centrifugal tube is fixed, the inclination angle of the middle shaft of the centrifugal tube is not the direction of gravity when the centrifugal tube is static, and is not the direction of the resultant force of centrifugal force and gravity when the centrifugal tube rotates, the position relation of density gradient generated by centrifugation is likely to cause the movement of the fuzzy separation interface in the process that the rotating speed is reduced and the centrifugal tube is static at last, and certain influence is caused when the centrifugal tube is moved.

If the separation effect is slightly reduced after the centrifugation is neglected, compared with a swing rotor, the angle type rotor has the advantages that the rotor is firm, and only simple geometric relation needs to be considered for the design of stable rotation. In addition to the separation effect, the relative advantages of the flail rotor include low material usage, low rotational inertia (low power requirements), and the like.

In the scheme of taking a centrifugal rotating head as a (cylindrical coordinate) positioning reference system and allowing the limited movement of the centrifugal tube positions in centrosymmetric arrangement, the ideal condition that the central axis and the gravity center of the centrifugal tube keep stable operation under the action of gravity and centrifugal force in the centrifugal process is as follows:

1. the whole barycenter of all centrifuging tubes is on the center pin (being the pivot) of post coordinate all the time, and the ideal scheme is: a group of centrifugal tubes (or each centrifugal tube in a plurality of groups of centrifugal tubes) are in the same shape, equal weight and centrosymmetric distribution, and the centrosymmetric distribution is kept in the rotating process;

2. the plane of the central axis motion of each centrifuge tube contains the central axis of the cylindrical coordinates, and the direction of the resultant force of gravity and centrifugal force acting on a single centrifuge tube is consistent with the central axis of that centrifuge tube.

The connection mode of the centrifugal tube (including the centrifugal tube sleeve) of the swing rotor and the rotating head comprises the connection through a fixed rotating shaft. However, the fixed connection of the rotating shaft has the disadvantages that the centrifuge tube is inconvenient to be removed for replacement, and the centrifuge tube is stressed at a fixed position and is seriously worn.

Therefore, a centrifugal rotor which is convenient for centrifugal operation, stable in centrifugal rotation and simple in structure is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a centrifugal rotor and centrifuge to not enough among the prior art.

In order to achieve the purpose, the utility model adopts the technical proposal that:

the utility model discloses a first aspect provides a centrifugal rotor, include:

a body having a bottom wall and a side wall;

at least two hole groups, a plurality of which are circumferentially symmetrically arranged in the main body;

each of the groups of holes comprising:

a first aperture disposed through said bottom wall of said body;

a second aperture disposed through said sidewall of said body;

the second hole of each hole group is communicated with the first hole to form a long slotted hole.

Further, the long slotted hole is in an L-like shape.

Further, still include:

and the limiting unit is arranged on the upper part of the side wall of the main body.

Furthermore, the limiting unit is a sealing ring.

Further, the body is made of a light metal material or an engineering material.

Further, the main body includes:

the pivot adapting unit is arranged on the bottom wall of the main body.

Further, the rotating shaft connecting part penetrates through the bottom wall of the main body.

Further, the axis of the rotating shaft connecting part is coaxial or parallel with the axis of the main body.

Further, the width of the first aperture is greater than or equal to the width of the second aperture.

Further, the longitudinal section of the inner wall of the side wall is cylindrical, truncated cone-shaped or circular arc-shaped.

Further, the first end of the first hole is semi-circular, the second end of the second hole is semi-circular, and the axis of the first end of the first hole is coplanar with the axis of the second end of the second hole.

Further, the group of holes further comprises:

an accommodation cavity disposed at a first end of the first bore.

Further, the width of the accommodating cavity is smaller than the width of the first hole.

Further, a ratio of a thickness of the body to a width of the first aperture is greater than or equal to 1/10.

The second aspect of the present invention provides a centrifuge, which is provided with the above-mentioned centrifugal rotor.

Further, still include:

a position sensor disposed inside the centrifuge;

wherein, under the condition that centrifuge centrifugation is ended, position sensor detects and is located whether the centrifuging tube in the punch combination is in vertical quiescent condition.

Further, still include:

a manipulator mounted to the centrifuge with a gripping end thereof aligned with any of the first apertures at a specific location.

The utility model adopts the above technical scheme, compare with prior art, have following technological effect:

the centrifugal rotor and the centrifugal machine of the utility model have the advantages that under the static condition, the centrifugal tube is vertically inserted into the first end of the first hole and is kept fixed, so that the centrifugal rotor and the centrifugal machine are convenient to clamp; under the pivoted condition, under the effect of centrifugal force, the centrifuging tube slides to the second end in second hole along the punch combination to be in the horizontal direction, at this moment, the axis of centrifuging tube can infinitely be close in the direction of centrifugal force and gravity resultant force, and the centrifuging tube solution that the bottom has the punch combination of being convenient for is thrown away from totally.

Drawings

Fig. 1 is a schematic view of a centrifugal rotor according to an exemplary embodiment of the present invention.

Fig. 2 is a top view of a centrifugal rotor according to an exemplary embodiment of the present invention.

Fig. 3 is a bottom view of a centrifugal rotor according to an exemplary embodiment of the present invention.

Fig. 4 is a front view of a centrifugal rotor according to an exemplary embodiment of the present invention.

Fig. 5 is a longitudinal sectional view of a centrifugal rotor according to an exemplary embodiment of the invention.

Fig. 6 is a schematic view of a centrifugal rotor according to an embodiment of the invention.

Fig. 7 is a schematic view of a centrifugal rotor according to an embodiment of the invention.

Fig. 8 is a schematic view of a centrifuge rotor in a static state (centrifuge tube in vertical position) according to an exemplary embodiment of the present invention.

Fig. 9 is a schematic view of the rotation state of the centrifugal rotor according to an exemplary embodiment of the present invention (the centrifugal tube is in a horizontal state).

Fig. 10 is a schematic view of a centrifuge of an exemplary embodiment of the present invention.

Wherein the reference numerals: the centrifuge rotor 100, the body 110, the bottom wall 111, the side wall 112, the hole group 120, the first hole 121, the second hole 122, the accommodating chamber 123, the stopper unit 130, the rotation shaft connecting member 140, the hollow casing 150, the centrifuge 200, the robot arm 210, and the centrifuge tube 300.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.

Example 1

An exemplary embodiment of the present invention, as shown in fig. 1-5, is a centrifugal rotor 100 comprising a main body 110 and at least two hole sets 120, the hole sets 120 being arranged throughout the main body 110.

Wherein the body 110 includes a bottom wall 111 and a side wall 112, and the side wall 112 is disposed around the bottom wall 111 so as to form an opening at an upper portion of the body 110.

The shape of the longitudinal section of the inner wall of the sidewall 112 includes, but is not limited to, a cylindrical shape, a right circular truncated cone shape, a reverse circular truncated cone shape, and a circular arc shape. Wherein, when the sidewall 112 is cylindrical, the inner wall of the sidewall 112 is perpendicular to the upper wall of the bottom wall 111; when the side wall 112 has a right circular truncated cone shape, the inner wall of the side wall 112 forms an obtuse angle with the upper wall of the bottom wall 111.

In some embodiments, the body 110 is made of a light metal material, such as aluminum, aluminum alloy, magnesium alloy, aluminum magnesium alloy, titanium alloy, and the like. The use of the light metal material can ensure the structural strength of the centrifugal rotor 100 while reducing the weight of the centrifugal rotor 100, and the centrifugal rotor 100 can be applied to high-speed centrifugation (rotation speed 8000 to 30000r/min), ultracentrifugation (rotation speed 30000 to 80000r/min), or ultracentrifugation (rotation speed > 80000 r/min).

In some embodiments, the body 110 may also be made of an engineering plastic, such as polyamide, polycarbonate, polyoxymethylene, modified polyphenylene ether, thermoplastic polyester, and the like. By using the engineering plastic, the structural strength of the centrifugal rotor 100 can be ensured, the production cost of the centrifugal rotor 100 can be reduced, and the production efficiency of the centrifugal rotor 100 can be improved, while the weight of the centrifugal rotor 100 is reduced.

The hole group 120 includes a first hole 121 and a second hole 122, wherein the first hole 121 is disposed through the bottom wall 111 of the body 110, the second hole 122 is disposed through the side wall 112 of the body 110, and the first hole 121 and the second hole 122 communicate to form a long slot. Specifically, the second end of the first hole 121 communicates with the first end of the second hole 122.

In some embodiments, the longitudinal section of the long slot formed by the communication between the first hole 121 and the second hole 122 is shaped like an "L". Specifically, in the case where the longitudinal section of the inner wall of the side wall 112 has a cylindrical shape, a right circular truncated cone shape, or an inverted circular truncated cone shape, the inner wall of the side wall 112 and the upper wall of the bottom wall 111 form an L-like structure, and the longitudinal section of the long slot hole formed by communicating the first hole 121 and the second hole 122 has an L-like shape. In addition, the junction of the first hole 121 and the second hole 122 is in a smooth transition, i.e. the right angle of the "L" like shape is replaced by a circular arc.

In some embodiments, the longitudinal section of the slotted hole formed by the communication between the first hole 121 and the second hole 122 is "C" shaped. Specifically, when the longitudinal section of the inner wall of the side wall 112 is circular arc-shaped, the inner wall of the side wall 112 and the upper wall of the bottom wall 111 form a "C" shaped structure, and the longitudinal section of the elongated slot formed by the first hole 121 and the second hole 122 communicating with each other is "C" shaped.

In some embodiments, the width of the first aperture 121 is greater than or equal to the width of the second aperture 122, and the widths of the first aperture 121 and the second aperture 122 are aligned with the junction line at least in a line adjacent to the junction point.

In order to define the attitude of the centrifuge tube and to increase the structural strength of the centrifuge rotor 100 itself, the ratio of the thickness of the body 110 of the centrifuge rotor 100 to the width of the first aperture 121 (or the second aperture 122) is greater than 1/10.

The first end of the first hole 121 has a semicircular cross section, and the second end of the first hole 121 has a rectangular cross section. The second end of the second hole 122 has a semicircular longitudinal section, and the first end of the second hole 122 has a rectangular longitudinal section. The axis of the semicircle of the first hole 121 is coplanar with the axis of the semicircle of the second hole 122. Alternatively, the axis of the semicircle of the first hole 121 and the axis of the semicircle of the second hole 122 are perpendicular to each other and coplanar. Specifically, the central axes of the elongated slots formed by the first and second holes 121 and 122 are coplanar with the radial direction of the main body 110.

The number of hole groups 120 is an even number, such as 2 hole groups, 4 hole groups, 6 hole groups, etc. The sets of holes 120 are circumferentially symmetrically disposed on the body 110. Specifically, if the number of hole groups 120 is n (n.gtoreq.2), the included angle formed between two adjacent hole groups 120 is 360 °/n.

The number of hole groups 120 may also be an odd number, such as 3 hole groups, 5 hole groups, 7 hole groups, etc. The sets of holes 120 are circumferentially symmetrically disposed on the body 110. Specifically, if the number of hole groups 120 is n (n.gtoreq.3), the included angle formed between two adjacent hole groups 120 is 360 °/n.

In the case where the number of hole sets 120 is even during centrifugation, the number of hole sets 120 that are occupied may be odd or even, and the occupied hole sets 120 must be symmetrical; in case the number of hole groups 120 is an odd number, the number of hole groups 120 occupied can only be an odd number, and the occupied hole groups 120 must be symmetrical.

In some embodiments, the number of hole groups 120 is 6, labeled I, II, III, IV, V, and VI, respectively. When two centrifuge tubes are symmetrically arranged, the centrifuge tubes can be arranged in I-IV and II-V, II-VI modes; when multiple centrifuge tubes are placed symmetrically, they can be arranged in I-III-V, II-IV-VI, in I-II-IV-V, I-III-IV-VI, II-III-V-VI, or in I-II-III-IV-V-VI.

In some embodiments, the number of hole groups 120 is 12, labeled I, II, III, IV, V, VI, VII, VIII, IX, X, XI, and XII, respectively. When two centrifuge tubes are symmetrically arranged, the centrifuge tubes can be arranged in I-VII; when a plurality of centrifuge tubes are symmetrically arranged, the centrifuge tubes can be arranged in an I-V-IX, an II-VI-X and the like, and so on.

In some embodiments, the number of hole sets 120 is 5, labeled I, II, III, IV, and V, respectively, which can only symmetrically place five centrifuge tubes.

In some embodiments, the number of hole groups 120 is 9, labeled I, II, III, IV, V, VI, VII, VIII, and IX, respectively. Three centrifuge tubes can be symmetrically placed, and the centrifuge tubes can be arranged in I-IV-VII, II-V-VIII and III-VI-IX, or nine centrifuge tubes can be symmetrically placed.

In some embodiments, as shown in FIG. 6, the aperture set 120 further includes a receiving cavity 123, the receiving cavity 123 is disposed at a first end of the first aperture 121, and the receiving cavity 123 has a width that is less than a width of the first aperture 121. By means of the receiving space 123, the centrifuge rotor 100 can be adapted to some shaped centrifuge tubes, such as centrifuge tubes with a raised cover, wherein the raised cover means that the connecting/hinge bars between the cover and the tube protrude from the tube, or the cover has a projection that protrudes from the tube to assist in opening the cover. The receiving cavity 123 can be used to receive the protrusion of the cap portion of the centrifuge tube, so that the centrifuge tube will not stay in an incorrect position due to the protrusion of the cap portion when moving from the second hole 122 to the first hole 121.

The receiving cavity 123 has a sector shape in cross section, and has a radius smaller than that of the semicircle of the first end of the first hole 121.

In some embodiments, the receiving cavity 123 may also be located at the left and/or right side of the first end of the first hole 121.

In some embodiments, the group of holes 120 is an axisymmetric pattern. Specifically, the central axis of the first hole 121, the central axis of the second hole 122, and the central axis of the accommodating chamber 123 are located on the same plane.

In some embodiments, the group of holes 120 is a non-axisymmetric pattern. Specifically, at least one of the central axis of the first hole 121, the central axis of the second hole 122, and the central axis of the accommodation chamber 123 is not in the same plane. For example, the central axis of the first hole 121 and the central axis of the second hole 122 are located on the same plane, and the central axis of the receiving cavity 123 is not located in the plane.

In order to prevent the centrifugal tube from being thrown off during the centrifugation, a stopper unit 130 is provided at an upper portion of the main body 110. Specifically, the stopper unit 130 is located at an upper portion of the sidewall 112. Wherein, the position limiting unit 130 is a sealing ring.

In some embodiments, the inner diameter of the stopper unit 130 is less than or equal to the inner diameter of the upper end of the sidewall 112, and the outer diameter of the stopper unit 130 is greater than or equal to the outer diameter of the upper end of the sidewall 112. Under the condition that the internal diameter of spacing unit 130 is less than the internal diameter of the upper end of lateral wall 112, the centrifuging tube moves to second hole 122, and spacing unit 130 supports the protruding edge of centrifuging tube for the centrifuging tube can not be thrown away in centrifugal process.

During centrifugation, the hole set 120 provides a space track for movement of the centrifuge tube, the inner side of the space track terminates into the inner wall of the first hole 121, and the outer side of the space track terminates into the position limiting unit 130. The curve of the space track intersecting the inner wall of the bottom wall 111 and the inner wall of the side wall 112 of the main body 110 is a motion track for the convex sliding motion of the outer wall of the centrifuge tube. For any centrifugal tube, the space track for the centrifugal tube to move and the motion track for the centrifugal tube outer wall to slide are consecutive.

Specifically, in the centrifugation stage, the centrifuge tube moves rapidly from the first hole 121 to the second hole 122, i.e. the posture of the centrifuge tube is rapidly changed from the vertical state to the horizontal state; at the end of the centrifugation, the centrifuge tube gradually moves from the second hole 122 to the first hole 121, i.e. the posture of the centrifuge tube is rapidly changed from the horizontal state to the vertical state.

The centrifugal rotor 100 further comprises a shaft coupling part 140, the shaft coupling part 140 being provided to the bottom wall 111 of the main body 110.

In some embodiments, the hinge connecting part 140 is disposed through the bottom wall 111 of the body 110.

In some embodiments, the axis of the shaft coupling member 140 is collinear with the axis of the body 110, i.e., the shaft coupling member 140 is disposed coaxially with the body 110.

In some embodiments, the axis of the shaft connecting part 140 is parallel to the axis of the main body 110, i.e. the shaft connecting part 140 and the main body 110 are arranged eccentrically, i.e. the centrifugal rotor 100 is an eccentric centrifugal rotor.

In some embodiments, as shown in FIG. 7, the centrifuge rotor further comprises a number of hollow cannulas 150, the hollow cannulas 150 being disposed within the aperture set 120 for housing centrifuge tubes.

In some embodiments, the hollow sleeve 150 is a cylindrical sleeve. Wherein, the internal diameter of hollow sleeve 150 has multiple specification, can be applicable to the centrifuging tube of different pipe diameters.

In some embodiments, the hollow sleeve 150 is made of a metallic material. In long-time centrifugation in-process, centrifugal rotor 100's temperature can rise, because expend with heat and contract with cold effect, centrifugal rotor 100 can expand, and then leads to the volume of holding the centrifuging tube of punch combination 120 to diminish, the problem that the centrifuging tube was thrown away easily appears. The hollow sleeve 150 made of a metal material is disposed in the hole set 120, and the hollow sleeve 150 is still positioned in the hole set 120 under the condition that the centrifugal rotor 100 is expanded by heat, so as to prevent the centrifugal tube from being squeezed and thrown out. Specifically, the metal material from which the hollow sleeve 150 is made has a coefficient of thermal expansion of less than 25, wherein the unit of the coefficient of thermal expansion is 10-6/deg.C, at 20 deg.C to 50 deg.C.

In some embodiments, the hollow sleeve 150 is made of a ceramic material, such as alumina porcelain, magnesia porcelain, or the like. Specifically, the ceramic material from which the hollow sleeve 150 is made has a coefficient of thermal expansion of less than 15, wherein the coefficient of thermal expansion is expressed in units of 10-6/deg.C, at 20 deg.C to 50 deg.C.

In some embodiments, the hollow sleeve 150 is made of an engineering plastic, such as polyamide, polycarbonate, polyoxymethylene, modified polyphenylene oxide, and thermoplastic polyester, among others. Specifically, the engineering plastic from which the hollow sleeve 150 is made has a coefficient of thermal expansion of less than 90 at 20-50 ℃, where the unit of coefficient of thermal expansion is 10-6/DEG C.

In some embodiments, the hollow sleeve 150 is removably disposed within the aperture set 120, i.e., the hollow sleeve 150 may be selectively positioned outside of the centrifuge tube according to the centrifuge requirements.

During a particular use, the centrifugal rotor 100 has a stationary state and a rotating state. As shown in fig. 8, when the centrifuge tube 300 is vertically disposed in the first hole 121 of the hole group 120 in the stationary state, the centrifuge tube 300 can be easily gripped. As shown in fig. 9, in the rotating state, the centrifugal tube 300 moves along the spatial orbit of the hole set 120 and moves into the second hole 122 of the hole set 120 by the centrifugal force, and gradually approaches to be flapped, and the posture of the centrifugal tube 300 gradually changes from the vertical direction to the horizontal direction. In the rotated state, the central axis of the centrifuge tube 300 is in the direction of the resultant of the centrifugal and gravitational forces.

In one particular use of this example, a nucleic acid column may be purified. The resultant force direction of the centrifugal force and the gravity is always consistent with the central axis of the centrifugal tube, so that the liquid cannot stay in the nucleic acid column. Compared with the vacuum pumping mode, the centrifugal mode has better effect. The reason is that aerosol may be generated to cause pollution during vacuum pumping, and the centrifugal mode can avoid aerosol pollution generated by vacuum pumping because acting force aims at mass rather than gas-liquid interface.

In another specific method of use of this embodiment, the solution may be allowed to penetrate the filter membrane. The solution penetrates through the filter membrane to become filtrate by utilizing the centrifugal force, and a collecting pipe can be sleeved outside the centrifugal pipe if needed; if not used, the filtrate can be collected as waste liquid and then treated in a centralized way. In this method of use, a butterfly tube with a filter membrane having a smaller radius than the butterfly tube can be used.

Compared with the angle type rotating head in the related technology, the centrifugal rotor in the embodiment of the application is in the centrifugal rotation process, the direction of the central axis of the centrifugal tube is the direction of the centrifugal force and the gravity resultant force, the movement of a fuzzy separation interface cannot occur in the centrifugal tube in the process that the rotating speed of the centrifugal rotor is reduced and the centrifugal rotor is finally static, so that solid residues cannot occur in supernatant in the centrifugal tube, and the moving of the supernatant cannot be influenced.

Compared with the swing rotor in the related art, the centrifugal rotor in the embodiment of the application is convenient to take the centrifugal tube after the centrifugation is finished, and the centrifugal tube is not stressed at a fixed position and is not abraded basically or slightly abraded.

Example 2

This example is a centrifuge equipped with the centrifugal rotor of example 1.

As shown in fig. 10, a centrifuge 200 is provided with a centrifuge rotor 100 and at least one position sensor (not shown) mounted therein.

In some embodiments, a position sensor is provided inside the centrifuge 200 for detecting whether the centrifuge tube 300 within the centrifuge rotor 100 is in the first hole 121 and whether the posture of the centrifuge tube 300 is a vertical posture with the centrifuge rotor 100 in a stationary state.

In some embodiments, a position sensor is provided corresponding to the first holes 121 of the set of holes 120 of the centrifuge rotor 100 for detecting the position and attitude of the centrifuge tube 300 within each first hole 121. Wherein the position sensor is a rotary position sensor.

To improve the degree of automation, the centrifuge 200 further comprises a manipulator 210 for grasping the stationary centrifuge tube 300 in a fixed position at its grasping end when in a particular position. Specifically, at the end of centrifugation, the gripping section of the robot arm 210 grips the centrifuge tube 300 at the first hole 121.

The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.

Claims (10)

1. A centrifugal rotor, comprising:

a body having a bottom wall and a side wall;

at least two hole groups, a plurality of which are circumferentially symmetrically arranged in the main body;

each of the groups of holes comprising:

a first aperture disposed through said bottom wall of said body;

a second aperture disposed through said sidewall of said body;

the second hole of each hole group is communicated with the first hole to form a long slotted hole.

2. The centrifugal rotor of claim 1, further comprising:

and the limiting unit is arranged on the upper part of the side wall of the main body.

3. The centrifuge rotor of claim 1 wherein the width of the first aperture is greater than or equal to the width of the second aperture.

4. The centrifugal rotor of claim 1, wherein the set of holes further comprises:

an accommodation cavity disposed at a first end of the first bore.

5. The centrifuge rotor of claim 4 wherein the width of the containment chamber is less than the width of the first aperture.

6. The centrifugal rotor of claim 1, further comprising:

a hollow sleeve disposed at the set of holes.

7. The centrifugal rotor according to claim 6, wherein said hollow sleeve is made of a metallic material having a coefficient of thermal expansion of less than 25 x 10 at 20-50 ℃^-6/° c; or

The hollow sleeve is made of ceramic material, and the ceramic material is arranged at the temperature of 20-50 DEG CThe coefficient of thermal expansion of the material is less than 15 x 10^-6/° c; or

The hollow sleeve is made of engineering plastics, and the thermal expansion coefficient of the engineering plastics is less than 90 x 10 under the condition of 20-50 DEG C^-6/℃。

8. A centrifuge incorporating a centrifuge rotor according to any one of claims 1 to 7.

9. The centrifuge of claim 8, further comprising:

a position sensor disposed inside the centrifuge;

wherein, under the condition that centrifuge centrifugation is ended, position sensor detects and is located whether the centrifuging tube in the punch combination is in vertical quiescent condition.

10. The centrifuge of claim 8, further comprising:

a manipulator mounted to the centrifuge with a gripping end thereof aligned with any of the first apertures at a specific location.

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