CN113522540B - Rotor and centrifugal machine with same - Google Patents
Rotor and centrifugal machine with same Download PDFInfo
- Publication number
- CN113522540B CN113522540B CN202111065650.0A CN202111065650A CN113522540B CN 113522540 B CN113522540 B CN 113522540B CN 202111065650 A CN202111065650 A CN 202111065650A CN 113522540 B CN113522540 B CN 113522540B
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- rotor
- cover
- assembly
- rotor body
- boss
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B5/00—Other centrifuges
- B04B5/04—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
- B04B5/0407—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles
- B04B5/0414—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/02—Casings; Lids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/02—Casings; Lids
- B04B2007/025—Lids for laboratory centrifuge rotors
Abstract
An embodiment of the present invention provides a rotor, including: a rotor body assembly and a rotor cover assembly; the rotor body assembly comprises a rotor body, and a boss is arranged on the inner wall of a central shaft of the rotor body; the rotor cover component comprises a rotor cover body, a mounting cover, a button component and barb teeth; the mounting cover is arranged in the center of the rotor cover body, the button part is accommodated in the mounting cover, and the barb teeth are connected with the button part and penetrate through an opening in the center of the mounting cover so as to enable the barb teeth to enter a central shaft of the rotor body; when the inverted hook teeth fasten the boss, the rotor body assembly and the rotor cover assembly are locked. According to the embodiment of the invention, the boss is arranged on the inner wall of the central shaft of the rotor body, the barb teeth on the rotor cover component enter the central shaft of the rotor body, the button part on the rotor cover component drives the barb teeth to fasten the boss, and the rotor body component and the rotor cover component are locked, so that the operation is simple, convenient and effective, the operation burden of experimenters is reduced, and the safety accident caused by the improper locking is avoided.
Description
Technical Field
The invention relates to the technical field of centrifuges, in particular to a rotor and a centrifuge with the same.
Background
The centrifugal machine is an instrument for separating biological samples and is widely applied to the fields of life science, medical treatment, chemistry, environmental protection and the like. The rotor is an important component of the centrifuge, and mainly comprises a rotor body assembly and a rotor cover assembly, and is used for fixing a test tube containing a biological sample to be centrifuged and preventing the biological sample from splashing out. When the rotor rotates at a high speed, the rotor body assembly and the rotor cover assembly must be locked together, so that the condition that parts impact the cavity of the centrifuge cannot exist, and the parts are not allowed to fly out of the cavity of the centrifuge, so that safety accidents are avoided.
Typically, the rotor body assembly and the rotor cover assembly employ conventional threaded connections. The connection mode needs to be screwed for a plurality of circles to ensure that the two are locked together, and the operation is complex. If the rotor is not screwed in place, the rotor cover assembly may loosen when the rotor rotates at high speed, which may also cause safety accidents.
Disclosure of Invention
The embodiment of the invention provides a rotor, and aims to solve the problem that in the prior art, when a rotor body assembly and a rotor cover assembly are locked, the operation is complex.
In a first aspect, a rotor is provided, comprising a rotor body assembly (1) and a rotor cover assembly (2); the containing cavity (11) of the rotor body assembly (1) is closed by the rotor cover assembly (2);
the rotor body assembly (1) comprises a rotor body (12), wherein a boss (1000) is arranged on the inner wall of a central shaft of the rotor body (12);
the rotor cover assembly (2) comprises a rotor cover body (21), a mounting cover (22), a button part (23) and barb teeth (24);
the mounting cover (22) is arranged at the center of the rotor cover body (21), the button part (23) is accommodated in the mounting cover (22), and the barb teeth (24) are connected with the button part (23) and penetrate through an opening (2000) in the center of the mounting cover (22) to enable the barb teeth (24) to enter the central shaft of the rotor body (12); when the barb teeth (24) fasten the boss (1000), the rotor body component (1) and the rotor cover component (2) are locked.
In a second aspect, there is provided a centrifuge comprising a motor, a drive shaft, a centrifuge chamber and a rotor as described above.
According to the embodiment of the invention, the boss is arranged on the inner wall of the central shaft of the rotor body, the barb teeth on the rotor cover component enter the central shaft of the rotor body, the button part on the rotor cover component drives the barb teeth to fasten the boss, and the rotor body component and the rotor cover component are locked, so that the operation is simple, convenient and effective, the operation burden of experimenters is reduced, and the safety accident caused by the improper locking is avoided.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a cross-sectional view of a rotor in an unlocked state in accordance with an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the rotor in a locked condition according to one embodiment of the present invention;
FIG. 3 is a partial cross-sectional view of a rotor in a locked condition according to one embodiment of the present invention;
FIG. 4 is an exploded view of a rotor according to one embodiment of the present invention;
FIG. 5 is a top view of a rotor cover assembly according to an embodiment of the present invention;
FIG. 6 is a schematic view of a centrifuge according to a second embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar modules or modules having the same or similar functionality throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
Centrifugal operation is a common operation in a laboratory and needs to be frequently carried out, the locking between the rotor body assembly and the rotor cover assembly is not complicated, otherwise, the locking between the rotor body assembly and the rotor cover assembly is not in place due to omission or negligence in complicated operation by an experimenter, and safety accidents are easily caused.
According to the embodiment of the invention, the boss is arranged on the inner wall of the central shaft of the rotor body, the barb teeth on the rotor cover component enter the central shaft of the rotor body, the button part on the rotor cover component drives the barb teeth to fasten the boss, and the rotor body component and the rotor cover component are locked, so that the operation is simple, convenient and effective, the operation burden of experimenters is reduced, and the safety accident caused by the improper locking is avoided.
Example one
Fig. 1 is a cross-sectional view of a rotor in an unlocked state according to an embodiment of the present invention. Fig. 2 is a cross-sectional view of the rotor in a locked state according to an embodiment of the present invention. Fig. 3 is a partial cross-sectional view of a rotor in a locked state according to an embodiment of the present invention. Fig. 4 is an exploded view of a rotor according to an embodiment of the present invention. Referring to fig. 1 to 4, the rotor includes a rotor body assembly 1 and a rotor cover assembly 2. The rotor body assembly 1 and the rotor cover assembly 2 are form-fitting bodies of revolution, and the receiving chamber 11 in the form of an annular groove of the rotor body assembly 1 is closed by the rotor cover assembly 2. When the centrifugal operation is performed, the rotor body assembly 1 is fixed on a driving shaft (not shown in the figure), then a test tube (not shown in the figure) containing a biological sample to be centrifuged is put into the rotor body assembly 1, and after the rotor cover assembly 2 is locked to the rotor body assembly 1, the driving shaft is rotated to perform the centrifugal operation.
In the embodiment of the present invention, the rotor body assembly 1 includes the rotor body 12, and the rotor body 12 is a rotating body. The central axis of the rotor body 12 may be a hollow structure, and a boss 1000 is disposed on the inner wall of the central axis of the rotor body 12. The boss 1000 may be a segment of a circular arc or a circular ring, which is not limited herein.
In the present embodiment, the rotor cover assembly 2 includes a rotor cover body 21, a mounting cover 22, a button member 23, and barbed teeth 24. The rotor cover body 21 and the mounting cover 22 are rotary bodies, and the rotor cover body 21 surrounds the mounting cover 22. The mounting cover 22 is disposed at the center of the rotor cover body 21 and can be used as a handle for grasping, an opening 2000 is disposed at the center of one surface facing the rotor body assembly 1, and the surface away from the rotor body assembly 1 is an upper cover 221 fixed by a countersunk screw 222. As an embodiment of the present invention, the opening 2000 may be a through hole penetrating the mounting cover 22 and the upper cover 221.
FIG. 5 is a top view of a rotor cover assembly according to an embodiment of the present invention. As shown in fig. 4 and 5, the button member 23 includes a button body 231 and a return spring 232, and is accommodated in the mounting cover 22. The return spring 232 is fixed in the mounting cover 22, one end of the button body 231 is connected with the return spring 232, and the other end extends out of the mounting cover 22. When one end of the button body 231 extending out of the mounting cover 22 is pressed by external force, the button body 231 translates, and the return spring 232 is compressed; when the external force is removed, the button body 231 is translated in the opposite direction under the force of the return spring 232. In order to balance and stabilize the locking force when the rotor body assembly 1 and the rotor cover assembly 2 are locked, and ensure good dynamic balance of the whole rotor, preferably, there are two button bodies 231, and correspondingly, there are two return springs 232, which are symmetrically distributed around the opening 2000.
The barb teeth 24 are connected to the button member 23, fixed to the button body 231 toward the opening 2000 through the center of the mounting cover 22 of the rotor body assembly 1. When the button body 231 is two, the barbed teeth 24 are also two, accordingly. When the rotor cover assembly 2 is closed towards the rotor body assembly 1, the barb teeth 24 enter into the central axis of the rotor body 12. When the barb teeth 24 fasten the boss 1000, the rotor body assembly 1 and the rotor cover assembly 2 are locked. Specifically, the button body 231 translates under the action of external force pressing, the barb teeth 24 are driven by the button body 231 to be away from the inner wall of the central shaft of the rotor body 12 and separate from the boss 1000, at this time, the rotor cover assembly 2 can be lifted, and the rotor body assembly 1 and the rotor cover assembly 2 are separated; when no external force presses the button body 231, the button body 231 drives the barb teeth 24 to approach the inner wall of the central shaft of the rotor body 12 under the spring force of the return spring 232, so that the barb teeth 24 fasten the boss 1000, and the rotor can be locked when in a static state. When the rotor rotates, the button body 231 and the barbed teeth 24 are subjected to centrifugal force, so that the pressure of the inner wall of the central shaft of the rotor body 12 is increased, and the barbed teeth 24 can more reliably fasten the boss 1000.
As an embodiment of the present invention, the barb tooth 24 includes a planar portion 241 and a beveled portion 242, the beveled portion 242 being located below the planar portion 241. When the rotor cover assembly 2 is closed toward the rotor body assembly 1, the barb teeth 24 enter into the central axis of the rotor body 12, and the tip of the ramp section 242 first contacts the boss 1000. When pressure is applied downward to the rotor cover assembly 2, the ramp portion 242 slides over the boss 1000, during which the barbed teeth 24 are pressed laterally away from the inner wall of the central axis of the rotor body 12, compressing the return spring 232 by the button body 231 until the flat portion 241 can pass over the boss 4. After the inclined plane part 242 and the plane part 241 slide over the boss 1000, under the spring force of the return spring 232, the button body 231 drives the barb teeth 24 to rapidly approach to the inner wall of the central axis of the rotor body 12, so that the plane part 241 slides into the lower part of the boss 1000, and the boss 1000 is fastened, so that the rotor body assembly 1 and the rotor cover assembly 2 are locked. Thus, the laboratory worker presses the rotor cover assembly 2 toward the rotor body assembly 1 to lock it. When the inclined plane part 242 slides over the boss 1000 and the barb tooth 24 approaches the inner wall of the central shaft of the rotor body 12 quickly, a 'click' locking prompt sound is generated to indicate that the rotor is in a locking state, and experimenters are not easy to miss or neglect in operation. When the unlocking is required, the experimenter holds the button body 231 until the plane part 241 is separated from the boss 1000, and lifts the rotor cover assembly 2 upwards to unlock the device.
As an embodiment of the present invention, the rotor cover assembly 2 further includes a first seal ring 25, a second seal ring 26, and a third seal ring 27.
The first seal ring 25 is clamped in a groove on the inner side of the mounting cover 22 and is in compression fit with the upper end surface 4000 of the central shaft of the rotor body 12, so that the mounting cover 22 and the central shaft of the rotor body 12 are sealed. Meanwhile, the first seal ring 25 has a certain degree of elasticity, and functions as an elastic member, allowing the rotor cover assembly 2 to be adjusted in a vertical direction with a small margin. When the machining precision of each part has errors, the locking and unlocking of the rotor body assembly 1 and the rotor cover assembly 2 can still be normally carried out through the elastic compensation amount of the first sealing ring 25, and the risk caused by the machining errors is eliminated.
The second seal ring 26 is clamped and fixed in a groove at the edge of the rotor cover body 21. When the rotor body assembly 1 and the rotor cover assembly 2 are locked, the gap between the edge of the rotor cover body 21 and the edge of the rotor body 12 is sealed by the second sealing ring 26. The first seal ring 25 and the second seal ring 26 are preferably made of 55HA durometer silicone. The third sealing ring 27 is disposed between the mounting cover 22 and the rotor cover body 21, and is a ring-shaped member, preferably made of teflon.
The clearances between the mounting cover 22, the rotor body 12 and the rotor cover body 21 can be closed by the above-described seal structure. When rotor body subassembly 1 and rotor cover subassembly 2 locking, accept the degree that chamber 11 keeps at bacterial level gas tightness, improved the biological safety who uses this rotor, guaranteed laboratory technician's safety and experiment reliability better.
According to the embodiment of the invention, the boss is arranged on the inner wall of the central shaft of the rotor body, the barb teeth on the rotor cover component enter the central shaft of the rotor body, the button part on the rotor cover component drives the barb teeth to fasten the boss, and the rotor body component and the rotor cover component are locked, so that the operation is simple, convenient and effective, the operation burden of experimenters is reduced, and the safety accident caused by the improper locking is avoided.
Example two
FIG. 6 is a schematic view of a centrifuge according to a second embodiment of the present invention. As shown in fig. 6, the centrifuge includes a motor, a drive shaft, a centrifuge chamber, and a rotor as described in the first embodiment. In the embodiment of the present invention, the structure of the rotor is the same as that of the first embodiment, and the same components as those of the first embodiment are labeled with the same numerals as those of the first embodiment, including all the features described in the first embodiment, and will not be described again here.
Referring to fig. 1 to 6, the rotor body assembly 1 further includes a drive shaft lock nut 13 disposed on the central axis of the rotor body 12, a stop ring 14 disposed on the inner wall of the central axis of the rotor body 12, an external thread seat 15 disposed on the central axis of the rotor body 12, a snap spring 16, and a butterfly washer 17. The external thread seat 15 forms a lock nut accommodating chamber 3000, and the drive shaft lock nut 13 is accommodated in the external thread seat 15. The drive shaft passes through the bottom of the centrifuge chamber and is connected to the central shaft of the rotor body assembly 1.
The conventional screw-coupled rotor body assembly is the same as the rotor body assembly 1 of the embodiment of the present invention, and the conventional screw-coupled rotor cover assembly includes a rotor cover body 21 and a cap nut. On this basis, the swivel cap nut is changed to a mounting cap 22, with the addition of button members 23 and barbed teeth 24. Therefore, the rotor cover assembly 2 provided by the embodiment of the invention can be obtained by only improving the traditional rotor cover assembly, so that the rotor body assembly 1 and the rotor cover assembly 2 can be quickly, simply and conveniently locked and unlocked, the transformation cost is low, and the compatibility is strong.
As an embodiment of the present invention, the rotor is locked to the drive shaft by the drive shaft lock nut 13 and the butterfly washer 17, and the stopper ring 14 is used to stop the drive shaft lock nut 13, preventing the drive shaft lock nut 13 from falling out of the central shaft of the rotor body 12. A test tube (not shown in the drawings) containing a biological sample to be centrifuged is placed in the rotor body assembly 1. The stop ring 14 is used as a boss 1000 on the inner wall of the central shaft of the rotor body 12, and after the rotor cover assembly 2 is locked to the rotor body assembly 1, the door cover of the centrifuge is closed, so that the rotor is positioned in the sealed centrifuge cavity, and the motor drives the driving shaft to rotate to perform centrifugal operation.
In another embodiment of the present invention, the opening 2000 of the mounting cover 22 is a through hole penetrating through the mounting cover 22 and the upper cover 221. The rotor can be integrally loaded onto and unloaded from the drive shaft through the opening 2000. The operation process is as follows: a test tube (not shown in the drawings) containing a biological sample to be centrifuged is placed in the rotor body assembly 1. The stop ring 14 acts as a boss 1000 on the inner wall of the central axis of the rotor body 12 and the rotor cover assembly 2 is locked to the rotor body assembly 1. The rotor is locked on the driving shaft through the driving shaft locking nut 13 and the butterfly washer 17, the door cover of the centrifugal machine is closed, the rotor is located in the sealed centrifugal machine cavity, and the motor drives the driving shaft to rotate to perform centrifugal operation.
According to the embodiment of the invention, the boss is arranged on the inner wall of the central shaft of the rotor body, the barb teeth on the rotor cover component enter the central shaft of the rotor body, the button part on the rotor cover component drives the barb teeth to fasten the boss, and the rotor body component and the rotor cover component are locked, so that the operation is simple, convenient and effective, the operation burden of experimenters is reduced, and the safety accident caused by the improper locking is avoided.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A rotor, characterized by comprising a rotor body assembly (1) and a rotor cover assembly (2), wherein a containing cavity (11) of the rotor body assembly (1) is closed by the rotor cover assembly (2);
the rotor body assembly (1) comprises a rotor body (12), the central shaft of the rotor body (12) is of a hollow structure, and a boss (1000) is arranged on the inner wall of the central shaft of the rotor body (12);
the rotor cover assembly (2) comprises a rotor cover body (21), a mounting cover (22), a button part (23) and barb teeth (24);
wherein the mounting cover (22) is arranged at the center of the rotor cover body (21), the button part (23) is accommodated in the mounting cover (22), the barb teeth (24) are connected with the button part (23) and penetrate through an opening (2000) at the center of the mounting cover (22) so that the barb teeth (24) enter the central shaft of the rotor body (12); when the barb teeth (24) fasten the boss (1000), the rotor body component (1) and the rotor cover component (2) are locked;
the button part (23) comprises a button body (231) and a return spring (232);
the button body (231) translates under the action of external force pressing, and the barb teeth (24) are driven by the button body (231) to be away from the inner wall of the central shaft of the rotor body (12) and separated from the boss (1000);
when the button body (231) is not pressed by external force, the button body (231) drives the barb teeth (24) to approach to the inner wall of the central shaft of the rotor body (12) under the spring force of the return spring (232), so that the barb teeth (24) are fastened on the boss (1000).
2. The rotor as recited in claim 1, characterized in that the button body (231) is plural, symmetrically distributed around the opening (2000).
3. The rotor as recited in claim 1, characterized in that the barb teeth (24) include a planar portion (241) and a beveled portion (242); the barb teeth (24) enter the central shaft of the rotor body (12), after the inclined surface part (242) slides over the boss (1000), the plane part (241) fastens the boss (1000) so as to lock the rotor body assembly (1) and the rotor cover assembly (2).
4. The rotor according to claim 1 or 2, characterized in that the rotor cover assembly (2) further comprises a first sealing ring (25), the first sealing ring (25) is clamped in a groove inside the mounting cover (22) and is in compression fit with the upper end surface (4000) of the central shaft of the rotor body (12).
5. The rotor as recited in claim 1 or 2, characterized in that the rotor cover assembly (2) further comprises a second sealing ring (26), the second sealing ring (26) being snapped into a groove in the edge of the rotor cover body (21).
6. The rotor as recited in claim 1 or 2, characterized in that the rotor cover assembly (2) further comprises a third sealing ring (27), the third sealing ring (27) being disposed between the mounting cover (22) and the rotor cover body (21).
7. A centrifuge, comprising a motor, a drive shaft, a centrifuge chamber, and a rotor according to any of claims 1-6;
the rotor body assembly (1) further comprises a drive shaft locking nut (13) arranged on a central shaft of the rotor body (12);
the driving shaft penetrates through the bottom of the centrifuge cavity, the rotor is locked on the driving shaft through the driving shaft locking nut (13), so that the rotor is located in the centrifuge cavity, and the motor drives the driving shaft to rotate to perform centrifugal operation.
8. The centrifuge according to claim 7, characterized in that the rotor body assembly (1) further comprises a stop ring (14) disposed on the inner wall of the central axis of the rotor body (12), the stop ring (14) being used to stop the drive shaft lock nut (13).
9. The centrifuge of claim 8, wherein the snap ring (14) acts as a boss (1000) on an inner wall of a central axis of the rotor body (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111065650.0A CN113522540B (en) | 2021-09-13 | 2021-09-13 | Rotor and centrifugal machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111065650.0A CN113522540B (en) | 2021-09-13 | 2021-09-13 | Rotor and centrifugal machine with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113522540A CN113522540A (en) | 2021-10-22 |
| CN113522540B true CN113522540B (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111065650.0A Active CN113522540B (en) | 2021-09-13 | 2021-09-13 | Rotor and centrifugal machine with same |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4180131A1 (en) * | 2021-11-11 | 2023-05-17 | Eppendorf SE | Centrifuge rotor, rotor cover and rotor bottom |
| EP4234091A1 (en) * | 2022-02-28 | 2023-08-30 | Thermo Electron LED GmbH | Locking mechanism for a lid of a rotor of a centrifuge and centrifuge rotor |
| CN114950746B (en) * | 2022-07-27 | 2022-12-06 | 深圳市瑞沃德生命科技有限公司 | Rotor and centrifugal machine with same |
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| CN105977723A (en) * | 2016-07-29 | 2016-09-28 | 中航光电科技股份有限公司 | Connector and connector assembly adopting same |
| CN106887763A (en) * | 2017-02-24 | 2017-06-23 | 中航光电科技股份有限公司 | A kind of connector assembly and its plug connector |
| CN112469505A (en) * | 2018-05-11 | 2021-03-09 | 拜克门寇尔特公司 | Centrifuge rotor and container arrangement |
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| CN212820515U (en) * | 2020-05-31 | 2021-03-30 | 长沙高新技术产业开发区湘仪离心机仪器有限公司 | Door cover structure of vacuum-pumping centrifugal machine |
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| CN111921723A (en) * | 2020-08-06 | 2020-11-13 | 西藏大学 | Vegetable drug triturating and separating equipment |
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| CN112657687A (en) * | 2020-12-21 | 2021-04-16 | 浙江大学 | Double-layer-wall double-door structure of large-scale supergravity geotechnical centrifuge |
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