CN111659546B - Centrifugal machine - Google Patents
Centrifugal machine Download PDFInfo
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- CN111659546B CN111659546B CN202010335060.4A CN202010335060A CN111659546B CN 111659546 B CN111659546 B CN 111659546B CN 202010335060 A CN202010335060 A CN 202010335060A CN 111659546 B CN111659546 B CN 111659546B
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- 238000009434 installation Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 11
- 238000010168 coupling process Methods 0.000 description 11
- 238000005859 coupling reaction Methods 0.000 description 11
- 238000010146 3D printing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
- B04B9/06—Fluid drive
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
- B04B9/08—Arrangement or disposition of transmission gearing ; Couplings; Brakes
- B04B2009/085—Locking means between drive shaft and rotor
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- General Health & Medical Sciences (AREA)
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Abstract
The centrifugal machine comprises a driving head connected with the motor and a rotor detachably arranged on the driving head; the rotor comprises an unlocking element and a rotor inner core, wherein the unlocking element and the rotor inner core vertically extend along the rotor installation direction, the lower end of the unlocking element is provided with a conical end part, and the diameter of the conical end part gradually increases along the rotor installation direction; the rotor inner core is sleeved on the outer side of the unlocking element and can slide along the unlocking element, and the rotor inner core comprises a first locking element and a second locking element which are symmetrically arranged and can rotate oppositely; the drive head includes: at least three limit grooves which are circumferentially and uniformly distributed on the bottom surface of the driving head; the rotor inner core moves downwards relative to the unlocking element, and the conical end part stretches into the space between the first locking element and the second locking element to enable the rotor inner core to rotate inwards and retract into the rotor inner core; the first driving shaft and the second driving shaft can be operably extended into any two limit grooves, the conical end parts are withdrawn from between the first locking element and the second locking element so as to enable the conical end parts to outwards rotate and protrude out of the rotor inner core, and the first locking element and the second locking element are clamped with the driving head. The centrifugal machine can realize quick installation of the rotor.
Description
Technical Field
The invention belongs to the technical field of centrifuges, and particularly relates to a centrifuge.
Background
The centrifuge rotor is mounted on the centrifuge. Such centrifuges are mainly used in laboratories for research in the fields of medicine, pharmacy, biology, chemistry, etc., for separating components of samples using mass inertia. The rotor of the centrifuge is required to rotate at high speed, on which the sample containers are arranged in different ways, in which the sample to be centrifuged is stored and rotated. The rotor is driven to rotate by a motor.
In order to process different analysis samples, the requirements of different experiments are met. The rotor needs to be disassembled frequently. In the prior art, the rotor is designed to be connected with the motor rotating shaft through a specific clamping structure, and the self-locking of the rotor is realized. Such a clamping structure is mainly divided into two parts, namely a mounting sleeve formed on the rotor, as well as two vertically extending connecting elements in the form of pins formed on the drive head and a coupling element provided on the drive head, as disclosed in chinese patent application (CN 102176975B): "if the rotor is to be connected to the drive head, the rotor is moved from top to bottom in the direction of the drive head. The sleeve mounted on the rotor contacts with its truncated conical surface the corresponding outer edge of the coupling element, which is pressed forward by the stop by the compression spring. By lowering the sleeve with its truncated conical surface onto the respective edge, the coupling element is deflected in such a way that the respective outer edge overlaps the surface line of the drive head. The elongated portion of each coupling element is deflected in the direction of the axis of rotation against the spring force of the compression spring. If the rotor is to be removed from the sleeve, an operating element is required to be moved vertically downwards along the rotational axis by means of a resiliently preloaded button, which operating element has a conical end which acts on the coupling teeth of the coupling element, the conical end exerting a force perpendicular to the rotational axis, whereby the coupling element can be deflected until the outer edge again overlaps the busbar or even still continues to move into the drive head, at which point the rotor can be pulled upwards again and removed from the drive head. "
Although the structure can realize the connection between the rotor and the motor and realize self-locking, the structure has the following problems that firstly, when the rotor is installed, a user must ensure that a notch on the rotor is aligned with a pin-shaped connecting element, otherwise, the installation cannot be realized; secondly, unlocking and disassembling are needed to rely on keys of an operation element, and a user needs to manually operate when the rotor is taken down; thirdly, the connecting element and the coupling element are both arranged on the driving head, the deflection of the coupling element is realized by the extrusion of the truncated cone surface of the rotor sleeve, the whole weight of the rotor is heavy, and the coupling element determines the working position of the rotor through the pressure spring, and the rotor is replaced for a plurality of times. Deformation is easy to occur.
The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art.
Disclosure of Invention
The present invention is designed and provides a centrifuge aiming at the above problems existing in the prior art.
In order to achieve the aim of the invention, the invention is realized by adopting the following technical scheme:
A centrifuge, comprising: the driving head is connected with the motor; and a rotor detachably mounted on the drive head, the rotor including: the unlocking element vertically extends along the rotor installation direction, a conical end part is formed at the lower end of the unlocking element, and the diameter of the conical end part gradually increases along the rotor installation direction; the rotor inner core is sleeved outside the unlocking element and can slide along the unlocking element, and the rotor inner core comprises a first locking element and a second locking element which are symmetrically arranged and can rotate oppositely, wherein the first locking element is sleeved outside a first driving shaft, and the second locking element is sleeved outside a second driving shaft; the drive head includes: the three limit grooves encircle and are uniformly distributed on the bottom surface of the driving head; the rotor core moves downwards relative to the unlocking element, the conical end part extends between the first locking element and the second locking element, and the first locking element and the second locking element rotate inwards to retract into the rotor core; the first driving shaft and the second driving shaft can be operably extended into any two limit grooves, the conical end part withdraws from between the first locking element and the second locking element, the first locking element and the second locking element rotate outwards to protrude out of the surface of the rotor inner core, and the first locking element and the second locking element are clamped with the driving head.
Further, the driving head further includes: the limiting part is formed at the upper end of the driving head and extends inwards along the radial direction of the driving head; the first locking element and the second locking element protruding out of the surface of the rotor inner core are abutted against the lower end face of the limiting part.
Further, the method further comprises the following steps: the rotor body is sleeved outside the rotor inner core, and a plurality of surrounding and uniformly distributed supporting bodies are formed on the rotor body; the rotor body and the rotor core together enclose an internal cavity for accommodating the drive head.
Further, the method further comprises the following steps: the connecting sleeve is sleeved outside the unlocking element and can slide along the unlocking element; the connecting sleeve, the rotor body and the rotor inner core are fixedly connected.
Further, the rotor core includes: the connecting end plate extends horizontally outwards in the radial direction of the rotor inner core from the outer peripheral surface of the rotor inner core, the connecting end plate is embedded into the rotor body, the upper surface of the connecting end plate is flush with the upper end surface of the rotor body, the connecting sleeve part is sleeved outside the rotor inner core, and the lower end surface of the connecting sleeve is in contact with the upper surface of the connecting end plate.
Further, the unlocking element further includes: the annular limiting part horizontally extends outwards along the radial direction of the unlocking element from the outer peripheral surface of the unlocking element; further comprises: the first spring is sleeved on the unlocking element; the connecting sleeve is sleeved outside the first spring, the connecting sleeve is in contact with the upper end of the first spring, and the lower end of the first spring is in contact with the upper end face of the annular limiting part.
Further, the method further comprises the following steps: the handle is detachably and fixedly connected with the upper end of the unlocking element.
Further, a first limit clamping groove and a second limit clamping groove are further formed in the rotor inner core; when the conical end part extends into the space between the first locking element and the second locking element, the first locking element and the second locking element rotate inwards to retract into the first limit clamping groove and the second limit clamping groove; when the conical end portion withdraws from between the first locking element and the second locking element, the first locking element and the second locking element rotate outwards to extend outwards from the first limit clamping groove and the second limit clamping groove.
Further, the method further comprises the following steps: the first fixing block is fixedly arranged in the rotor inner core and is connected with the first locking element through a second spring; the second fixing block is fixedly arranged in the rotor inner core and is connected with the second locking element through a third spring; when the conical end part withdraws from between the first locking element and the second locking element, the second spring and the third spring are in an uncompressed state, and the first locking element and the second locking element extend outwards from the first limiting clamping groove and the second limiting clamping groove.
Further, two ends of the limiting groove are provided with arc end parts; the first driving shaft and the second driving shaft can be operably extended into any two limit grooves and respectively lean against the arc end parts of the two limit grooves.
Compared with the prior art, the invention has the advantages and positive effects that:
In the centrifuge disclosed by the invention, when a user needs to install or remove the rotor, the unlocking element is only pulled upwards, so that locking or unlocking can be automatically finished, no additional operation is needed, no related parts such as a button and the like are needed to be designed, and the first driving shaft and the second driving shaft can extend into any two adjacent limit grooves, so that alignment is not needed, the dismounting efficiency can be quickly improved, and in addition, the driving of the first locking element and the second locking element is realized by the conical end part designed inside, compared with deflection formed by integrally pressing the rotor, the first locking element and the second locking element are not easy to cause displacement and damage.
Other features and advantages of the present invention will become apparent upon review of the detailed description of the invention in conjunction with the drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of the disclosed centrifuge wherein a conical end portion extends between a first locking element and a second locking element;
FIG. 2 is a schematic view of the structure of the centrifuge of the present disclosure wherein the conical end portion exits between the first locking element and the second locking element;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a schematic view of a rotor in a centrifuge according to the present disclosure;
FIG. 5 is a schematic view of another perspective of a rotor in a centrifuge according to the present disclosure;
FIG. 6 is a schematic diagram of a drive head in a centrifuge according to the present disclosure;
FIG. 7 is a schematic view of the structure of an unlocking element in the centrifuge disclosed in the present invention;
FIG. 8 is a schematic diagram illustrating the assembly of the unlocking element, the first locking element, and the second locking element in a centrifuge according to the present disclosure;
Fig. 9 is a top view showing the internal structure of the rotor core in the centrifuge according to the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples.
It should be noted that, in the description of the present invention, terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Aiming at the three problems of the centrifugal machine in the prior art, the invention designs and provides the centrifugal machine. The centrifugal machine comprises a driving head 1, and the driving head 1 is connected with a motor 3 to provide power for rotation of the centrifugal machine. The rotor 2 is detachably mounted on the drive head 1. In one embodiment of the invention, the drive head 1 and the rotor 2 are designed entirely new, in particular, in contrast to the prior art. As shown in fig. 1 to 3, the rotor 2 includes an unlocking element 1 and a rotor core 22. The unlocking element 1 extends vertically in the direction of installation of the rotor 2, the lower end of the unlocking element 1 being formed with a conical end 37. The diameter of the conical end 37 increases gradually in the direction of installation of the rotor 2. The rotor core 22 is sleeved outside the unlocking element 1, and the rotor core 22 can slide along the unlocking element 1. The rotor core 22 comprises a first locking element 23 and a second locking element 24 which are symmetrically arranged and can rotate in opposite directions, wherein the first locking element 23 is sleeved outside a first driving shaft 25, and the second locking element 24 is sleeved outside a second driving shaft 26. As shown in fig. 6, the driving head 1 is specifically designed with three limiting grooves 11, the three limiting grooves 11 are circumferentially and uniformly distributed on the bottom surface of the driving head 1, and any two limiting grooves 11 are adjacent.
The unlocking element 1 and the rotor core 22 may be in different positions when the rotor 2 is mounted on the drive head 1 or the rotor 2 is dismounted from the drive head 1, the conical end 37 may extend between the first locking element 23 and the second locking element 24 or may extend from between the first locking element 23 and the second locking element 24, the first locking element 23 further may extend out of the surface of the rotor core 22 or retract into the rotor core 22, thereby achieving locking of the rotor 2. When it is desired to mount the rotor 2, as shown in fig. 1, the rotor core 22 moves downward with respect to the unlocking member 1 by the action of gravity, the conical end 37 is inserted between the first locking member 23 and the second locking member 24, and the first locking member 23 and the second locking member 24 are rotated inward to retract into the rotor core 22 by being pressed by the outer surface of the conical end 37. The diameter of the rotor core 22 is at a minimum and the rotor core 22 can extend into the drive head 1. Since the three limit grooves 11 on the bottom surface of the driving head 1 are circumferentially and adjacently disposed, the first driving shaft 25 and the second driving shaft 26 are operatively projected into any two limit grooves 11, and the user does not need to perform the alignment operation. Subsequently, as shown in fig. 2 and 3, the conical end 37 is withdrawn from between the first locking element 23 and the second locking element 24, the first locking element 23 and the second locking element 24 are rotated outwardly to protrude from the surface of the rotor core 22, and the first locking element 23 and the second locking element 24 are engaged with the driving head 1. When it is necessary to disassemble the rotor 2, the unlocking element 1 is pulled upwards, the rotor core 22 is moved downwards relative to the unlocking element 1, the conical end 37 again extends between the first locking element 23 and the second locking element 24, the first locking element 23 and the second locking element 24 are again rotated inwards to retract into the rotor core 22, and the rotor core 22 can be removed from the drive head 1.
In the centrifuge disclosed in the present invention, when a user needs to install or remove the rotor 2, locking or unlocking can be automatically completed by pulling up the unlocking member 1, no additional operation is required, no related parts such as a button or the like are required, and the first driving shaft 25 and the second driving shaft 26 can be extended into any two adjacent limit grooves 11, so alignment is not required, and thus the dismounting efficiency can be rapidly improved, and moreover, the driving of the first locking member 23 and the second locking member 24 is realized by the conical end 37 designed inside, compared with the deflection formed by the whole depression of the rotor 2, the first locking member 23 and the second locking member 24 are less likely to cause displacement and damage.
In some alternative embodiments, the locking may be achieved by engagement with a catch formed on the inner wall of the drive head 1 when the first locking element 23 and the second locking element 24 extend into the drive head 1. In this case, however, the required manufacturing accuracy is higher. As shown in fig. 6, a more versatile way is that a stopper 12 is particularly designed in the drive head 1. As a whole, the entire drive head 1 is designed as a hollow cylinder, and as shown in fig. 1 to 3, when assembled, the parts of the rotor core 22, i.e., the first locking element 23, the first drive shaft 25, the second locking element 24 and the second drive shaft 26, will extend into the hollow part of the drive head 1. The limiting portion 12 is preferably formed at the upper end of the driving head 1 and extends inward in the radial direction of the driving head 1, and when the driving head is locked, the first locking element 23 and the second locking element 24 protruding from the surface of the rotor core 22, that is, the upper surface of the first locking element 23 and the upper surface of the second locking element 24 abut against the lower end surface of the limiting portion 12. The outer ends of the first locking element 23 and the second locking element 24 are preferably each designed to be arc-shaped and arc-matched with the inner wall of the drive head 1, ensuring a good locking effect. The shape of each limit groove 11 in the driving head 1 is also specially designed, the limit grooves 11 are arc-shaped as a whole, in particular, two ends of each limit groove are provided with arc-shaped end parts 13, the arc-shaped design of each arc-shaped end part 13 is the same as the arc of the circumferential surfaces of the first driving shaft 25 and the second driving shaft 26, and the first driving shaft 25 and the second driving shaft 26 which vertically extend into the limit grooves 11 can slide along the limit grooves 11 and finally abut against the arc-shaped end parts 13 of the two limit grooves 11. So that the first driving shaft 25 and the second driving shaft 26 can overcome radial sliding when rotating, and the structure is more stable. When the upper surface of the first locking element 23 and the upper surface of the second locking element 24 abut against the lower end surface of the stopper 12, a certain clearance is preferably formed between the conical end 37 and the bottom surface of the driving head 1, so as to avoid unnecessary upward movement of the unlocking element 1, so that the first locking element 23 and the second locking element 24 are subjected to unnecessary external force, reducing the service life.
As shown in fig. 3 to 5, the rotor body 27 is fitted over the outer side of the rotor core 22. The rotor body 27 has a plurality of circumferentially and uniformly distributed carrier bodies 28 formed thereon. Carrier 28 may be connected to a container for holding the centrifugation reagent in a variety of different forms, such as a test tube, pipette, and the like. In the present invention, the rotor body 27 and the rotor core 22 together enclose an internal cavity 38 for accommodating the drive head 1. In the mounted state, the inner wall of the rotor body 27 is in contact with the outer wall of the drive head 1. The rotor body 27 and the rotor core 22 can be moved as a whole along the unlocking element 1. The reset after the movement can be achieved in different mechanical ways, most preferably by means of a restoring force of a spring. As shown, a connecting sleeve 29 is also provided on the outside of the unlocking element 1. The connecting sleeve 29 is likewise designed to be slidable along the unlocking element 1. The connecting sleeve 29 is designed above the rotor core 22. The connecting sleeve 29 is mainly used for pressing the spring, and correspondingly, an annular limiting part 32 is also arranged on the unlocking element 1. The annular stopper 32 horizontally extends outward in the radial direction of the unlocking element 1 from the outer peripheral surface of the unlocking element 1. The first spring 33 is sleeved on the unlocking element 1, the connecting sleeve 29 is sleeved on the outer side of the first spring 33, the connecting sleeve 29 is contacted with the upper end of the first spring 33, and the lower end of the first spring 33 is contacted with the upper end face of the annular limiting part 32. The coupling sleeve 29 moves up and down along the unlocking member 1 together with the rotor core 22 and the rotor body 27 to press the spring while being downward and return it to the original position by the restoring force of the spring.
The connecting sleeve 29, the rotor core 22, in particular the outer shell of the rotor core 22, is fixedly connected to the rotor body 27. In some alternative ways, the connecting sleeve 29, the outer shell of the rotor core 22 and the rotor body 27 may also be integrally formed by 3D printing. However, it is preferable, particularly in view of maintenance, that the rotor core 22 is further preferably designed with a connection end plate 30, and the outer circumferential surface of the rotor core 22 of the connection end plate 30 extends horizontally outward in the radial direction of the rotor core 22 to divide the rotor core 22 into upper and lower visual portions. The connection end plate 30 is embedded in the rotor body 27, the upper surface of the connection end plate 30 is flush with the upper end surface of the rotor body 27, the connection sleeve 29 is partially sleeved outside the upper half part (shown as 31 in 3) of the rotor core 22, and the lower end surface of the connection sleeve 29 is in contact with the upper surface of the connection end plate 30.
In order to facilitate access to the rotor 2 by an experimenter or a manipulator, a handle 34 is also specifically designed. The handle 34 is detachably fixedly connected, such as by a screw connection, to the upper end of the unlocking element 1. Of course, in some alternative embodiments, the handle 34 may also be made integrally with the unlocking element 1, or made by 3D printing. In the uninstalled state, when the experimenter or the manipulator lifts the handle 34, the connecting sleeve 29, the rotor core 22 and the rotor body 27 as a whole move downward due to gravity, and the first spring 33 is pressed; in the mounted state, when the experimenter or the manipulator lifts the handle 34, the upper end of the first spring 33 is also pressed by the connecting sleeve 29, since the lower part of the first spring 33 is fixed to the unlocking element 1. Thereby ensuring a sufficient elastic restoring force.
The internal structure of the rotor core 22 is further described with reference to fig. 2, 7 to 9. The housing of the rotor core 22 is preferably provided with a first limit groove 35 and a second limit groove 36. When the conical end 37 is inserted between the first locking element 23 and the second locking element 24, the first locking element 23 and the second locking element 24 are rotated inwards to retract into the first limit catch 35 and the second limit catch 36. When the conical end 37 is withdrawn from between the first locking element 23 and the second locking element 24, the first locking element 23 and the second locking element 24 rotate outwardly and protrude outwardly from the first limit catch 35 and the second limit catch 36. In the uninstalled state, it is preferable to keep the first locking element 23 and the second locking element 24 in a free state protruding outward, i.e., the rotor core 22 is fixedly provided with a first fixing block 47 and a second fixing block 49, the first fixing block 47 is connected to the first locking element 23 by a second spring 48, and the second fixing block 49 is connected to the second locking element 24 by a third spring 49. When the conical end 37 is withdrawn from between the first locking element 23 and the second locking element 24, the second spring 48 and the third spring 49 are in an uncompressed state, and the first locking element 23 and the second locking element 24 protrude outwardly from the first limit catch groove 35 and the second limit catch groove 36 to maintain an overall free state.
In a preferred embodiment, both the first locking element 23 and the second locking element 24 can be designed in a crescent-like manner. The end near the inner side is defined as the proximal end (shown as 41 and 45 in fig. 9), the end near the outer side is defined as the distal end (shown as 42 and 46 in fig. 9), the end contacting the unlocking element 1 is defined as the tail end (shown as 39 and 43 in fig. 9), and the end connected with the first fixing block 47 or the second fixing block 49 is defined as the head end (shown as 40 and 44 in fig. 9). Wherein the tail ends (39, 43) of the first locking element 23 and the second locking element 24 are designed with partial cambered surfaces, the tail ends 39 of the first locking element 23 and the tail ends 43 of the second locking element 24 remain tangential to the outer surface of the unlocking element 1 or there is a gap when the conical end 37 exits from between the first locking element 23 and the second locking element 24. When the conical end 37 is inserted between the first locking element 23 and the second locking element 24, the trailing end 39 of the first locking element 23 and the trailing end 43 of the second locking element 24 are drawn across the outer end surface of the conical end 37 along a tangent to the outer peripheral surface of the conical end 37 to create a centripetal force at the leading end 40 of the first locking element 23 and the leading end 44 of the second locking element 24, causing the first locking element 23 and the second locking element 24 to deflect inwardly to retract into the rotor core 22, the curvature of the trailing ends of the first locking element 23 and the second locking element 24 is preferably designed to be 10 to 15 degrees, and the taper of the conical end 37 is preferably designed to be 40 to 45 degrees.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. A centrifuge, comprising:
The driving head is connected with the motor; and
A rotor detachably mounted on the drive head;
it is characterized in that the method comprises the steps of,
The rotor includes:
the unlocking element vertically extends along the rotor installation direction, a conical end part is formed at the lower end of the unlocking element, and the diameter of the conical end part gradually increases along the rotor installation direction; and
The rotor inner core is sleeved outside the unlocking element and can slide along the unlocking element, and comprises a first locking element and a second locking element which are symmetrically arranged and can rotate oppositely, wherein the first locking element is sleeved outside a first driving shaft, and the second locking element is sleeved outside a second driving shaft;
The drive head includes:
The three limit grooves encircle and are uniformly distributed on the bottom surface of the driving head;
the rotor core moves downwards relative to the unlocking element, the conical end part extends between the first locking element and the second locking element, and the first locking element and the second locking element rotate inwards to retract into the rotor core; the first driving shaft and the second driving shaft can be operably extended into any two limit grooves, the conical end part is withdrawn from between the first locking element and the second locking element, the first locking element and the second locking element rotate outwards to protrude out of the surface of the rotor inner core, and the first locking element and the second locking element are clamped with the driving head;
When the rotor is installed, the rotor inner core moves downwards relative to the unlocking element under the action of gravity, the conical end part stretches into the space between the first locking element and the second locking element and is extruded by the outer surface of the conical end part, the first locking element and the second locking element rotate inwards to retract into the rotor inner core, the diameter of the rotor inner core is in a minimum state, and the rotor inner core can stretch into the driving head;
when the rotor is disassembled, the unlocking element is pulled upwards, the rotor inner core moves downwards relative to the unlocking element, the conical end part stretches into the space between the first locking element and the second locking element, the first locking element and the second locking element rotate inwards to retract into the rotor inner core, and the rotor inner core can be removed from the driving head.
2. The centrifuge of claim 1, wherein:
The drive head further includes:
The limiting part is formed at the upper end of the driving head and extends inwards along the radial direction of the driving head; the first locking element and the second locking element protruding out of the surface of the rotor inner core are abutted against the lower end face of the limiting part.
3. The centrifuge of claim 2, wherein: further comprises:
the rotor body is sleeved outside the rotor inner core, and a plurality of surrounding and uniformly distributed supporting bodies are formed on the rotor body;
The rotor body and the rotor core together enclose an internal cavity for accommodating the drive head.
4. A centrifuge as claimed in claim 3, wherein: further comprises:
The connecting sleeve is sleeved outside the unlocking element and can slide along the unlocking element;
the connecting sleeve, the rotor body and the rotor inner core are fixedly connected.
5. The centrifuge of claim 4, wherein:
The rotor core includes:
The connecting end plate extends horizontally outwards in the radial direction of the rotor inner core from the outer peripheral surface of the rotor inner core, the connecting end plate is embedded into the rotor body, the upper surface of the connecting end plate is flush with the upper end surface of the rotor body, the connecting sleeve part is sleeved outside the rotor inner core, and the lower end surface of the connecting sleeve is in contact with the upper surface of the connecting end plate.
6. The centrifuge of claim 5, wherein:
the unlocking element further comprises:
the annular limiting part horizontally extends outwards along the radial direction of the unlocking element from the outer peripheral surface of the unlocking element;
Further comprises:
the first spring is sleeved on the unlocking element;
the connecting sleeve is sleeved outside the first spring, the connecting sleeve is in contact with the upper end of the first spring, and the lower end of the first spring is in contact with the upper end face of the annular limiting part.
7. The centrifuge of claim 6, wherein:
Further comprises:
the handle is detachably and fixedly connected with the upper end of the unlocking element.
8. The centrifuge of claim 1, wherein:
The rotor inner core is also provided with a first limit clamping groove and a second limit clamping groove; when the conical end part extends into the space between the first locking element and the second locking element, the first locking element and the second locking element rotate inwards to retract into the first limit clamping groove and the second limit clamping groove; when the conical end portion withdraws from between the first locking element and the second locking element, the first locking element and the second locking element rotate outwards to extend outwards from the first limit clamping groove and the second limit clamping groove.
9. The centrifuge of claim 8, wherein:
Further comprises:
the first fixing block is fixedly arranged in the rotor inner core and is connected with the first locking element through a second spring;
The second fixing block is fixedly arranged in the rotor inner core and is connected with the second locking element through a third spring;
When the conical end part withdraws from between the first locking element and the second locking element, the second spring and the third spring are in an uncompressed state, and the first locking element and the second locking element extend outwards from the first limiting clamping groove and the second limiting clamping groove.
10. The centrifuge according to any one of claim 1 to 9,
Both ends of the limiting groove are provided with arc end parts; the first driving shaft and the second driving shaft can be operably extended into any two limit grooves and respectively lean against the arc end parts of the two limit grooves.
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| CN202010335060.4A CN111659546B (en) | 2020-04-24 | 2020-04-24 | Centrifugal machine |
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| CN202010335060.4A CN111659546B (en) | 2020-04-24 | 2020-04-24 | Centrifugal machine |
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| CN111659546B true CN111659546B (en) | 2024-09-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114405693B (en) * | 2021-12-02 | 2025-02-07 | 深圳市瑞沃德生命科技股份有限公司 | A driving shaft, a rotor and a centrifuge thereof |
| 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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| US6063018A (en) * | 1997-10-23 | 2000-05-16 | Jouan | Centrifuge having force responsive locking device for securing a rotor to a drive head |
| CN212328631U (en) * | 2020-04-24 | 2021-01-12 | 青岛海特生物医疗有限公司 | Centrifugal machine |
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| IL163624A (en) * | 2003-08-29 | 2007-06-03 | Triumph Brands Inc | Quick disconnect with retaining spring |
| CN101534740B (en) * | 2006-09-12 | 2012-06-20 | 维达保健公司 | Medical procedures trays with endosseous device |
| JP5088249B2 (en) * | 2008-06-25 | 2012-12-05 | ソニー株式会社 | Female connector structure, battery, and adapter |
| DE102008045556A1 (en) * | 2008-09-03 | 2010-03-04 | Thermo Electron Led Gmbh | Centrifuge with a coupling element for axial locking of a rotor |
| CN101629662B (en) * | 2009-07-28 | 2012-04-18 | 吴良江 | Fire hose pipe joint |
| US8206425B2 (en) * | 2009-07-31 | 2012-06-26 | Neurovention, LLC | Cranial fixation device |
| CN101832076B (en) * | 2010-05-07 | 2012-09-26 | 重庆长安汽车股份有限公司 | Automotive oil tank door lock |
| DE102014002126B4 (en) * | 2014-02-17 | 2019-01-17 | Thermo Electron Led Gmbh | Drive head for the detachable connection of a drive with a rotor of a centrifuge, this comprehensive set and centrifuge |
| JP6686258B2 (en) * | 2016-08-26 | 2020-04-22 | 株式会社パイオラックス | Rotary telescopic device |
| CN108376608B (en) * | 2018-02-10 | 2020-11-06 | 青岛大学 | Magnetic nano particle and application thereof in preparing magnetic solid phase carrier |
| CN108867637B (en) * | 2018-08-23 | 2023-08-08 | 厦门市金海明工贸有限公司 | Anchor device capable of recycling anchor cable, locking method thereof and anchor cable recycling method |
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| US6063018A (en) * | 1997-10-23 | 2000-05-16 | Jouan | Centrifuge having force responsive locking device for securing a rotor to a drive head |
| CN212328631U (en) * | 2020-04-24 | 2021-01-12 | 青岛海特生物医疗有限公司 | Centrifugal machine |
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