CN220091722U - Centrifugal cup adapter - Google Patents

Abstract

The utility model provides a centrifugal cup adapter (10), comprising: an adapter (11); a lock ring (12) sleeved on the periphery of the adapter; a gland (13) configured to limit the locking ring to prevent the locking ring from disengaging from the adapter; and an elastic member (18) disposed between the adapter member (11) and the lock ring (12), the lock ring (12) being in a first position relative to the adapter member (11) under the elastic force of the elastic member (18), and the lock ring (12) being slidable along the axis of the adapter member (11) to a second position after overcoming the elastic force of the elastic member (18); in the first position, the adapter (11) can be coupled to the rotational shaft (45) of the centrifuge (40), and in the second position, the adapter (11) can be uncoupled from the rotational shaft (45) of the centrifuge (40). By utilizing the centrifugal cup adapter, centrifugal cups with different specifications can be used on the same centrifugal machine, and the centrifugal cup adapter is simple to install and disassemble and reliable in connection.

Description

Centrifugal cup adapter

Technical Field

The utility model relates to the technical field of bioengineering or centrifugal devices, in particular to a centrifugal cup adapter.

Background

In the field of bioengineering, centrifugal apparatuses are required, for example, a centrifuge is required for concentrating and washing blood cells, and the blood cells after extracorporeal expansion are required to be reduced in volume and removed from culture medium, and they are usually fed into a centrifuge bowl, which is rotated by the drive of the centrifuge to separate useful components from useless components. During operation, the centrifuge cup is installed as a consumable in the centrifuge.

The existing centrifugal machine can only use centrifugal cups of one specification, but in practical application, centrifugal cups of different volumes are expected to be used according to the volumes of processed samples, and good separation effect cannot be obtained when large-volume centrifugal cups are used when processed samples are smaller or when small-volume centrifugal cups are used when processed samples are more. In the prior art, in order to adapt to the processing of samples with different volumes, different centrifuges are required to be equipped, so that the equipment cost is increased, the operation and the debugging are complicated due to the replacement of the centrifuges, and the working efficiency is influenced.

Disclosure of Invention

The utility model aims to at least partially overcome the defects of the prior art and provide a centrifugal cup adapter.

The utility model also aims to provide the centrifugal cup adapter, so that centrifugal cups with different specifications can be used on the same centrifugal machine.

The utility model also aims to provide the centrifugal cup adapter, so that centrifugal cups with different specifications can be replaced simply and quickly.

The utility model also aims to provide the centrifugal cup adapter, which is convenient for a user to select consumable materials with different volumes according to different cell processing amounts, thereby improving the processing efficiency and reducing the loss.

The utility model also aims to provide the centrifugal cup adapter which can be assembled and disassembled without special tools and is reliable in connection.

In order to achieve one of the above objects or purposes, the technical solution of the present utility model is as follows:

a centrifuge cup adapter, the adapter comprising:

an adapter, one end of the adapter configured for connection with a centrifuge, the other end of the adapter configured for connection with a centrifuge cup;

the lock ring is sleeved on the periphery of the adapter;

a gland configured to limit the locking ring to prevent the locking ring from disengaging from the adapter; and

an elastic piece arranged between the adapter piece and the lock ring,

the lock ring is in a first position relative to the adapter under the action of the elastic force of the elastic piece, and can slide to a second position along the axis of the adapter after overcoming the elastic force of the elastic piece;

wherein in the first position the adapter is engageable on the rotational axis of the centrifuge and in the second position the adapter is disengageable from the rotational axis of the centrifuge.

According to one embodiment of the utility model, the rotating shaft accommodating cavity is arranged at the one end of the adapter, and a plurality of bead clamping holes are arranged on the side wall of the rotating shaft accommodating cavity;

the adapter seat also comprises a plurality of clamping beads which are respectively arranged in the clamping bead holes, and the clamping beads are used for being matched with clamping grooves on the rotating shaft of the centrifugal machine; and is also provided with

The plurality of clamping beads can change positions in the process that the locking ring moves from the first position to the second position, so that the clamping beads can be clamped into the clamping grooves of the rotating shaft when the locking ring is in the first position, and the clamping beads can be separated from the clamping grooves of the rotating shaft when the locking ring is in the second position.

According to one embodiment of the utility model, the gland is fixedly arranged on the adapter;

a spring accommodating section is arranged on the inner periphery of the lock ring, and a spring abutting step is arranged at the edge of the spring accommodating section;

one end of the elastic piece is abutted against the pressing cover, and the other end of the elastic piece is abutted against the spring abutting step.

According to one embodiment of the utility model, the inner circumference of the locking ring is further provided with a first ball-supporting section and a second ball-supporting section, and the diameter of the first ball-supporting section is smaller than that of the second ball-supporting section.

According to one embodiment of the utility model, the adapter has a first periphery, a second periphery and a third periphery arranged in sequence, wherein the diameter of the first periphery is smaller than the diameter of the second periphery, and the diameter of the second periphery is smaller than the diameter of the third periphery;

the bead clamping holes are arranged on the second periphery.

According to one embodiment of the utility model, the locking ring in the first position is arranged to bear against the first ball abutment section and in the second position is arranged to bear against the second ball abutment section.

According to one embodiment of the utility model, the locking ring is in a first position, the spring receiving section is opposite the first periphery, the first ball abutment section is opposite the ball clamping hole on the second periphery, and the second ball abutment section is opposite the third periphery.

According to one embodiment of the utility model, the gland is fixedly arranged on the adapter by a screw; or alternatively

The gland is screwed on the adapter.

According to one embodiment of the utility model, the locking ring is provided with an inner recess on its outer circumference.

According to one embodiment of the utility model, the locking ring is provided with knurling on its outer periphery.

The utility model provides a fast installation and locking adapter for switching different specifications of centrifugal cup consumable materials, which can be sleeved on a rotating shaft of a centrifugal machine of the cell processing equipment to compensate the height difference of the different specifications of centrifugal cup consumable materials. The adapter has positioning and locking functions, so that an operator can realize quick installation and disassembly by simple operation under the condition of not using tools, the working efficiency is greatly improved, and the expandability of equipment is also increased.

The centrifugal cup adapter allows the cell processing equipment to be compatible with more than two types of centrifugal cup consumable materials with different volumes (with different heights) under the condition of not changing a hardware structure, so that a user can conveniently select centrifugal cups with different volumes according to different cell processing amounts, the processing efficiency is improved, and the loss is reduced. The height of the matched centrifugal cup consumable can be changed according to different volumes, and the basic cell processing equipment can simply, conveniently and rapidly complete the installation and the disassembly of the adapter without special tools and special training on the condition that a client obtains good operation experience by only installing one centrifugal cup adapter if the centrifugal cup with small volume is switched according to the design of the centrifugal cup consumable with the largest volume, and the connection is reliable.

The centrifugal cup adapter is provided with the sliding lock ring, the clamping beads (steel balls) arranged on the periphery of the adapter can move along the radial direction through lifting and rebounding of the lock ring, the lock ring is pressed down under the action of spring force in a default state, the inner wall of the lock ring presses the steel balls to move inwards, and the steel balls are embedded into the clamping grooves of the rotating shaft of the equipment to realize self locking; when the rotary shaft is to be disassembled, the lifting lock ring moves upwards against the spring force, the space for outwards withdrawing the steel balls in the radial direction is reserved, the clamping beads move outwards under the reaction force of the clamping grooves of the rotary shaft, and the clamping beads are not embedded into the clamping grooves of the rotary shaft any more, and the adapter can be pulled out only by overcoming the axial friction force, so that the disassembly is realized.

The centrifugal cup adapter is provided with a mechanical self-locking mechanism, and after the centrifugal cup adapter is sleeved on the rotating shaft of the equipment and pushed to the bottom, the locking ring can automatically push the clamping beads into the clamping grooves cut outside the rotating shaft under the action of the built-in springs, so that self-locking is realized. At this time, no matter how the centrifugal cup is plugged and pulled out, the loosening of the adapter seat can not be caused, and the safety and the reliability are ensured. In addition, the locking ring is only required to be pulled up (can be operated by one hand or can be operated by two hands) during installation, then the rotating shaft is directly sleeved, the adapter can be pushed to the bottom with little force, and then the locking ring is released. Conversely, if the adapter is to be disassembled, the adapter can be easily pulled out by only grasping the lock ring and pulling the lock ring vertically upwards. The adapter has simple structural design and powerful functions.

Drawings

Fig. 1 is a perspective view of a centrifuge cup adapter according to an embodiment of the utility model;

FIG. 2 is a front view of a centrifugal cup adapter according to an embodiment of the utility model with a locking ring in a first position;

FIG. 3 is a cross-sectional view taken along section A-A in FIG. 2;

FIG. 4 is a cross-sectional view of a locking ring of a centrifuge cup adapter according to an embodiment of the utility model;

FIG. 5 is a cross-sectional view of a gland of a centrifuge cup adapter according to an embodiment of the utility model;

FIG. 6 is a cross-sectional view of an adapter of a centrifuge cup adapter according to an embodiment of the utility model;

FIG. 7 is a top view of a centrifuge cup adapter according to an embodiment of the utility model;

FIG. 8 is an exploded view of a centrifuge cup adapter according to an embodiment of the utility model;

FIG. 9 is a front view of a centrifugal cup adapter according to an embodiment of the utility model with a locking ring in a second position;

FIG. 10 is a cross-sectional view taken along section B-B in FIG. 9;

FIG. 11 is a perspective view of a centrifuge according to an embodiment of the present utility model;

FIG. 12 shows the centrifuge, centrifuge cup adapter and centrifuge cup separated;

FIG. 13 is a front view of a centrifuge according to an embodiment of the present utility model;

FIG. 14 is a partial cross-sectional view taken along section C-C of FIG. 13, wherein the centrifugal cup is of a first gauge;

FIG. 15 is a top view of a centrifuge according to an embodiment of the present utility model;

FIG. 16 is a top view of a centrifuge with a cover plate opened to show a centrifuge cup according to an embodiment of the present utility model;

FIG. 17 is a view corresponding to FIG. 14, wherein the centrifugal cup is of a second gauge;

fig. 18 schematically illustrates the process of disassembly of the centrifuge cup adapter;

FIG. 19 schematically illustrates a centrifuge cup of a second gauge; and

fig. 20 schematically illustrates a centrifugal cup of a first gauge.

Detailed Description

Exemplary embodiments of the present utility model are described in detail below with reference to the attached drawing figures, wherein the same or similar reference numerals denote the same or similar elements. Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in the drawings in order to simplify the drawings.

The general idea of the present utility model is to provide a centrifuge cup adapter with which the height difference between a smaller centrifuge cup and a standard centrifuge cup can be made up, so that the smaller centrifuge cup can be used on a centrifuge as well. The centrifuge of the present utility model is shown in fig. 11, and since it is not the main object of the present utility model, only the main structure thereof will be described, the centrifuge 40 has a centrifuge vessel 41 for housing a centrifuge cup 46 therein, the centrifuge vessel 41 is closed by two cover plates 42 above, the center of the cover plate 42 has an opening through which a centrifuge cup pipe joint 44 connected to the centrifuge cup 46 can pass, and furthermore, a locking assembly 43 is provided on the centrifuge vessel 41 to lock the two cover plates 42, and the cover plates 42 can be opened, so that the centrifuge cup 46 can be housed in the centrifuge vessel 41 or taken out of the centrifuge cup 46.

The centrifuge 40 has a rotation shaft 45 therein, and normally, the centrifugal cup 46 is directly mounted on the rotation shaft 45, and as shown in fig. 17, the rotation shaft 45 protrudes upward from the bottom of the centrifugal container 41, and the rotation shaft 45 has a mounting groove in its upper end surface, so that an annular wall is formed, and the centrifugal cup 46 is mounted in the mounting groove.

Embodiments of the centrifuge cup adapter are described in detail below in conjunction with fig. 1-10. The centrifugal cup adapter 10 mainly comprises an adapter 11, a lock ring 12, a gland 13, an elastic member 18 and a plurality of clamping beads 17. One end of the adapter 11 is configured to be connected with the centrifuge 40, the other end of the adapter 11 is configured to be connected with the centrifuge cup 46, specifically, the lower end of the adapter 11 is configured to be connected with the centrifuge 40, the upper end of the adapter 11 is configured to be connected with the centrifuge cup 46, the one end (i.e., the lower end) of the adapter 11 is provided with a rotation shaft accommodating chamber 20, the rotation shaft accommodating chamber 20 is an annular chamber, and is in shape-fit with an annular wall of the rotation shaft 45, so that the rotation shaft 45 can be just inserted into the rotation shaft accommodating chamber 20, and for weight saving, the lower end of the adapter 11 has a center hole 19, and the center hole 19 can be communicated with a centrifuge cup connecting portion 21 to be described later. The centrifugal cup connection portion 21 is provided at the upper end of the adapter 11, which is a hole groove in the shaft end surface of the adapter 11, and the lower end of the centrifugal cup 46 can be inserted into the centrifugal cup connection portion 21 to connect the two.

The locking ring 12 is in a ring sleeve structure and is sleeved on the periphery of the adapter 11, as shown in fig. 3, the locking ring 12 can slide relative to the adapter 11 along the axial direction of the adapter 11, the elastic piece 18 is arranged between the adapter 11 and the locking ring 12, the elastic piece 18 is a spring, the locking ring 12 is in a first position relative to the adapter 11 under the action of the elastic force of the elastic piece 18 (as shown in fig. 2 and 3), and after overcoming the elastic force of the elastic piece 18, the locking ring 12 can slide to a second position along the axial direction of the adapter 11 (as shown in fig. 9 and 10); wherein in the first position the adapter 11 is capable of being coupled to the rotational axis 45 of the centrifuge 40 and in the second position the adapter 11 is capable of being uncoupled from the rotational axis 45 of the centrifuge 40, as will be described in more detail below.

The gland 13 acts to restrain the locking ring 12 against removal from the adapter 11. The gland 13 is annular in shape having an annular rim and an extending wall extending vertically downwardly from the annular rim, the extending wall extending just into the gap between the locking ring 12 and the adapter 11. In the illustrated embodiment, the gland 13 is fixedly disposed on the adaptor 11, specifically, the adaptor 11 is fixedly disposed on the adaptor 11 by means of the screws 14, the number of the screws 14 is plural, they are uniformly distributed on the circumference of the gland 13, for example, four mounting holes are disposed on the annular rim, four screw holes 30 are disposed in the upper surface of the adaptor 11, and the four screws 14 are screwed on the screw holes 30 through the mounting holes. Alternatively, the gland 13 may be directly screwed to the adapter 11, with an internal thread provided on the inside of the extending wall of the gland 13, and an external thread engaged with the internal thread provided on the outer periphery of the adapter 11.

As shown in fig. 3, the side wall of the rotating shaft accommodating cavity 20 is provided with a plurality of clamping bead holes 29, which are uniformly distributed on the circumference of the side wall, the number of the clamping beads 17 is the same as that of the clamping bead holes 29, the clamping beads 17 can be steel balls and can extend into the clamping bead holes 29, the diameter of the clamping bead holes 29 gradually decreases from the outer side to the inner side of the rotating shaft accommodating cavity 20 along the axial direction of the clamping bead holes 29, and the diameter of the innermost clamping bead holes 29 is smaller than the diameter of the Yu Kazhu 17, so that the clamping beads 17 are prevented from falling off, and the clamping beads 17 are used for being matched with clamping grooves on the rotating shaft 45 of the centrifugal machine 40.

A spring accommodating section 22 is provided on the inner periphery of the lock ring 12, the spring accommodating section 22 is located on the upper side, and a spring abutment step 23 is provided on the lower edge of the spring accommodating section 22; one end of the elastic member 18 abuts against the lower end of the extension wall of the gland 13, and the other end abuts against the spring abutment step 23. The inner circumference of the locking ring 12 is also provided with a first ball-supporting section 24 and a second ball-supporting section 25, and the diameter of the first ball-supporting section 24 is smaller than that of the second ball-supporting section 25. Further, the adaptor 11 has a first outer periphery 26, a second outer periphery 27 and a third outer periphery 28 arranged in this order, wherein the diameter of the first outer periphery 26 is smaller than the diameter of the second outer periphery 27, and the diameter of the second outer periphery 27 is smaller than the diameter of the third outer periphery 28; the bead-clamping holes 29 are provided on the second outer periphery. The locking ring 12 in the first position the clamping bead 17 rests against the first ball abutment 24 and the locking ring 12 in the second position the clamping bead 17 can rest against the second ball abutment 25. When the locking ring 12 is in the first position, the spring receiving section 22 is opposite the first outer periphery 26, the first ball abutment section 24 is opposite the ball clamping hole 29 on the second outer periphery 27, and the second ball abutment section 25 is opposite the third outer periphery 28.

In this way, the plurality of clamping beads 17 can change position during movement of the locking ring 12 from the first position to the second position, such that the clamping beads 17 can be clamped into the clamping grooves of the rotating shaft 45 when the locking ring 12 is in the first position, and the clamping beads 17 can be disengaged from the clamping grooves of the rotating shaft 45 when the locking ring 12 is in the second position.

Advantageously, the outer circumference of the locking ring 12 is provided with an internal recess 15, the internal recess 15 being convenient for the operator to hold the locking ring 12 for insertion and withdrawal, and the outer circumference of the locking ring 12 is provided with knurling to prevent slipping.

Fig. 19 and 20 show two different sizes of centrifugal cups, respectively, the centrifugal cup in fig. 20 being a first size of centrifugal cup having a smaller volume and a smaller longitudinal height, and the centrifugal cup in fig. 19 being a second size of centrifugal cup having a larger volume and a larger longitudinal height. When the centrifugal cup 46 of the second specification is required to be used, the centrifugal cup adapter 10 is not required, and the centrifugal cup 46 of the second specification is directly connected to the rotation shaft 45 of the centrifuge 40, as shown in fig. 17. When the centrifugal cup 46 of the first specification is required to be used, firstly, the centrifugal cup 46 of the second specification is taken off from the rotary shaft 45, and then the centrifugal cup adapter 10 is installed on the rotary shaft 45, and the operation process is as follows: the operator holds the centrifugal cup adapter 10 to enable the rotating shaft accommodating cavity 20 to face downwards, then lightly pulls the locking ring 12 upwards by hand to enable the locking ring 12 to overcome the elastic force of the elastic piece 18 and move upwards relative to the adapter 11, at the moment, the force of inwards pushing the clamping beads 17 is relieved, the clamping beads 17 can retract into the clamping bead holes 29, then downwards pushing the adapter 11 to enable the rotating shaft accommodating cavity 20 of the adapter 11 to be buckled on the rotating shaft 45 of the centrifugal machine 40, then the locking ring 12 is released by hand, the locking ring 12 moves downwards under the elastic force of the elastic piece 18, the first ball abutting section 24 of the locking ring 12 abuts against the clamping beads 17 and inwards pushes the clamping beads 17 to enable the clamping beads to enter the clamping grooves of the rotating shaft 45, and therefore the adapter 11 is clamped on the rotating shaft 45, and the installation of the adapter 10 is completed; then, the centrifugal cup 46 of the first specification is attached to the centrifugal cup attachment portion 21 of the adapter 10, thereby completing the attachment of the centrifugal cup 46 of the first specification, as shown in fig. 14.

When the centrifugal cup 46 and the adapter 10 of the first specification need to be removed, firstly, the centrifugal cup 46 is removed from the centrifugal cup connecting portion 21 of the adapter 10, then, the lock ring 12 is held by a hand to be lifted upwards, the lock ring 12 moves upwards relative to the adapter 11 against the elastic force of the elastic piece 18, at this time, the force of pushing the clamping beads 17 inwards is relieved, the clamping beads 17 can retract into the clamping bead holes 29, the combination of the clamping beads 17 and the clamping grooves is relieved, then, the adapter 11 is pulled upwards, the rotating shaft accommodating cavity 20 of the adapter 11 is separated from the rotating shaft 45 of the centrifuge 40, and then, the lock ring 12 is released by the hand.

It should be noted that, in the natural state, there is a gap 16 between the lock ring 12 and the lower edge of the gland 13, the specific shape of the gap 16 is variable, in the natural state, a first distance D1 is maintained between the lock ring 12 and the lower edge of the gland 13, after the lock ring 12 is lifted upwards, a second distance D2 is maintained between the lock ring 12 and the lower edge of the gland 13 after the lock ring 12 moves to the top dead center, D1 is greater than D2, where D2 may be zero or a value greater than zero.

The utility model provides a fast installation and locking adapter for switching different specifications of centrifugal cup consumable materials, which can be sleeved on a rotating shaft of a centrifugal machine of the cell processing equipment to compensate the height difference of the different specifications of centrifugal cup consumable materials. The adapter has positioning and locking functions, so that an operator can realize quick installation and disassembly by simple operation under the condition of not using tools, the working efficiency is greatly improved, and the expandability of equipment is also increased.

The centrifugal cup adapter allows the cell processing equipment to be compatible with more than two types of centrifugal cup consumable materials with different volumes (with different heights) under the condition of not changing a hardware structure, so that a user can conveniently select centrifugal cups with different volumes according to different cell processing amounts, the processing efficiency is improved, and the loss is reduced. The height of the matched centrifugal cup consumable can be changed according to different volumes, and the basic cell processing equipment can simply, conveniently and rapidly complete the installation and the disassembly of the adapter without special tools and special training on the condition that a client obtains good operation experience by only installing one centrifugal cup adapter if the centrifugal cup with small volume is switched according to the design of the centrifugal cup consumable with the largest volume, and the connection is reliable.

The centrifugal cup adapter is provided with the sliding lock ring, the clamping beads (steel balls) arranged on the periphery of the adapter can move along the radial direction through lifting and rebounding of the lock ring, the lock ring is pressed down under the action of spring force in a default state, the inner wall of the lock ring presses the steel balls to move inwards, and the steel balls are embedded into the clamping grooves of the rotating shaft of the equipment to realize self locking; when the rotary shaft is to be disassembled, the lifting lock ring moves upwards against the spring force, the space for outwards withdrawing the steel balls in the radial direction is reserved, the clamping beads move outwards under the reaction force of the clamping grooves of the rotary shaft, and the clamping beads are not embedded into the clamping grooves of the rotary shaft any more, and the adapter can be pulled out only by overcoming the axial friction force, so that the disassembly is realized.

The centrifugal cup adapter is provided with a mechanical self-locking mechanism, and after the centrifugal cup adapter is sleeved on the rotating shaft of the equipment and pushed to the bottom, the locking ring can automatically push the clamping beads into the clamping grooves cut outside the rotating shaft under the action of the built-in springs, so that self-locking is realized. At this time, no matter how the centrifugal cup is plugged and pulled out, the loosening of the adapter seat can not be caused, and the safety and the reliability are ensured. In addition, the locking ring is only required to be pulled up (can be operated by one hand or can be operated by two hands) during installation, then the rotating shaft is directly sleeved, the adapter can be pushed to the bottom with little force, and then the locking ring is released. Conversely, if the adapter is to be disassembled, the adapter can be easily pulled out by only grasping the lock ring and pulling the lock ring vertically upwards. The adapter has simple structural design and powerful functions.

Although embodiments of the present utility model have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the utility model. The scope of applicability of the present utility model is defined by the appended claims and equivalents thereof.

List of reference numerals:

10 adapter

11 adapter

12 lock ring

13 gland

14 screw

15 concave parts

16 gap

17 card bead

18 elastic member

19 centre hole

20 rotating shaft accommodation chamber

21 centrifugal cup connecting part

22 spring receiving section

23 spring abutment step

24 first ball supporting section

25 second ball supporting section

26 first periphery

27 second periphery

28 third periphery

29 card pearl hole

30 screw holes

40 centrifuge

41 centrifugal container

42 cover plate

43 locking assembly

44 centrifugal cup pipe joint

45 rotation axis

46 centrifugal cup

D1 first distance

D2 a second distance.

Claims (10)

1. A centrifugal cup adapter (10), characterized in that the adapter (10) comprises:

an adapter (11), one end of the adapter (11) being configured for connection with a centrifuge (40), the other end of the adapter (11) being configured for connection with a centrifuge cup (46);

a lock ring (12) sleeved on the periphery of the adapter (11);

a gland (13) configured to limit the locking ring (12) to prevent the locking ring (12) from disengaging from the adapter (11); and

an elastic member (18) arranged between the adapter member (11) and the lock ring (12),

wherein the locking ring (12) is in a first position relative to the adapter (11) under the action of the elastic force of the elastic member (18), and the locking ring (12) can slide to a second position along the axis of the adapter (11) after overcoming the elastic force of the elastic member (18);

wherein in the first position the adapter (11) is capable of being coupled to a rotational axis (45) of a centrifuge (40), and in the second position the adapter (11) is capable of being uncoupled from the rotational axis (45) of the centrifuge (40).

2. The centrifugal cup adapter (10) according to claim 1, wherein:

the rotating shaft accommodating cavity (20) is formed in one end of the adapter piece (11), and a plurality of bead clamping holes (29) are formed in the side wall of the rotating shaft accommodating cavity (20);

the adapter (10) further comprises a plurality of clamping beads (17) which are respectively arranged in the clamping bead holes (29), and the clamping beads (17) are used for being matched with clamping grooves on a rotating shaft (45) of the centrifugal machine (40); and is also provided with

The plurality of clamping beads (17) can change positions in the process that the locking ring (12) moves from the first position to the second position, so that the clamping beads (17) can be clamped into the clamping grooves of the rotating shaft (45) when the locking ring (12) is in the first position, and the clamping beads (17) can be separated from the clamping grooves of the rotating shaft (45) when the locking ring (12) is in the second position.

3. The centrifugal cup adapter (10) according to claim 2, wherein:

the gland (13) is fixedly arranged on the adapter (11);

a spring accommodating section (22) is arranged on the inner periphery of the lock ring (12), and a spring abutting step (23) is arranged at the edge of the spring accommodating section (22);

one end of the elastic piece (18) is abutted against the gland (13), and the other end is abutted against the spring abutment step (23).

4. A centrifugal cup adapter (10) according to claim 3, wherein:

the inner periphery of the lock ring (12) is also provided with a first ball supporting section (24) and a second ball supporting section (25), and the diameter of the first ball supporting section (24) is smaller than that of the second ball supporting section (25).

5. The centrifugal cup adapter (10) according to claim 4, wherein:

the adapter (11) has a first periphery (26), a second periphery (27) and a third periphery (28) arranged in sequence, wherein the diameter of the first periphery (26) is smaller than the diameter of the second periphery (27), and the diameter of the second periphery (27) is smaller than the diameter of the third periphery (28);

the bead-clamping holes (29) are arranged on the second periphery.

6. The centrifugal cup adapter (10) according to claim 5, wherein:

the locking ring (12) in the first position the clamping bead (17) abuts against the first ball abutment section (24), and the locking ring (12) in the second position the clamping bead (17) can abut against the second ball abutment section (25).

7. The centrifugal cup adapter (10) according to claim 6, wherein:

when the lock ring (12) is in the first position, the spring accommodating section (22) is opposite to the first periphery (26), the first ball abutting section (24) is opposite to the ball clamping hole (29) on the second periphery (27), and the second ball abutting section (25) is opposite to the third periphery (28).

8. The centrifugal cup adapter (10) according to claim 7, wherein:

the gland (13) is fixedly arranged on the adapter (11) through a screw (14); or alternatively

The gland (13) is screwed on the adapter (11).

9. The centrifugal cup adapter (10) according to any one of claims 1-8, wherein:

an inner concave part (15) is arranged on the periphery of the lock ring (12).

10. The centrifugal cup adapter (10) according to any one of claims 1-8, wherein:

the periphery of the lock ring (12) is provided with reticulate knurling.