CN111195565A - Centrifugal mechanism and in-vitro detection analyzer - Google Patents
Centrifugal mechanism and in-vitro detection analyzer Download PDFInfo
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- CN111195565A CN111195565A CN202010111820.3A CN202010111820A CN111195565A CN 111195565 A CN111195565 A CN 111195565A CN 202010111820 A CN202010111820 A CN 202010111820A CN 111195565 A CN111195565 A CN 111195565A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/04—Periodical feeding or discharging; Control arrangements therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/04—Periodical feeding or discharging; Control arrangements therefor
- B04B2011/046—Loading, unloading, manipulating sample containers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N2035/00465—Separating and mixing arrangements
- G01N2035/00495—Centrifuges
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Abstract
本发明涉及一种离心机构及体外检测分析仪。该离心机构包括离心盘组件、周向定位机构和水平定位机构，所述离心盘组件沿竖直方向开设有定位孔，所述周向定位机构包括周向检测传感器，所述周向检测传感器用于检测所述离心盘组件的周向位置，使得所述离心盘组件在周向上定位，所述水平定位机构包括传动连接的定位驱动机构和定位件，所述定位驱动机构能够驱动所述定位件沿竖直方向移动，使得所述定位件插设于所述定位孔中，进而使得所述离心盘组件水平定位以及径向中心定位。本发明的离心机构能够精确地定位离心杯。
The invention relates to a centrifugal mechanism and an in vitro detection analyzer. The centrifugal mechanism includes a centrifugal disc assembly, a circumferential positioning mechanism and a horizontal positioning mechanism. The centrifugal disc assembly is provided with positioning holes along the vertical direction. The circumferential positioning mechanism includes a circumferential detection sensor. In order to detect the circumferential position of the centrifugal disc assembly, so that the centrifugal disc assembly is positioned in the circumferential direction, the horizontal positioning mechanism includes a positioning driving mechanism and a positioning member that are drive-connected, and the positioning driving mechanism can drive the positioning member. Moving in the vertical direction, the positioning member is inserted into the positioning hole, so that the centrifugal disc assembly is positioned horizontally and radially center. The centrifugal mechanism of the present invention can precisely position the centrifugal cup.
Description
Technical Field
The invention relates to the technical field of centrifugation, in particular to a centrifugal mechanism and an in-vitro detection analyzer comprising the same.
Background
Centrifuges are devices that must be used with chemiluminescent in vitro diagnostic devices. The centrifuge needs to rotate at a high speed to separate the blood serum from the blood cells, and inevitably generates large vibration. In order to eliminate the vibration, a spring is usually required for vibration elimination. Due to the presence of the spring, the centrifugal disk and other structures are on a floating mechanism, and as the centrifuge works for a longer time, the spring may be permanently deformed to cause the centrifugal disk not to be kept in a horizontal state, which makes it difficult to accurately position the centrifugal cup on the centrifugal disk. Once the position deviation of the centrifugal cup exceeds a certain range, the mechanical arm for automatically grabbing the centrifugal cup cannot accurately assemble and disassemble the centrifugal cup, so that the whole working system can be out of work, and equipment is down.
Disclosure of Invention
Based on the above-mentioned defects in the prior art, an object of the present invention is to provide a centrifugal mechanism capable of accurately positioning a centrifugal cup and an in vitro detection analyzer including the centrifugal mechanism.
Therefore, the invention provides the following technical scheme.
The invention provides a centrifugal mechanism, which comprises a centrifugal disc component, a circumferential positioning mechanism and a horizontal positioning mechanism,
the centrifugal disc component is provided with a positioning hole along the vertical direction,
the circumferential positioning mechanism comprises a circumferential detection sensor for detecting the circumferential position of the centrifugal disc assembly so that the centrifugal disc assembly is positioned in the circumferential direction,
the horizontal positioning mechanism comprises a positioning driving mechanism and a positioning piece which are in transmission connection, the positioning driving mechanism can drive the positioning piece to move in the vertical direction, so that the positioning piece is inserted into the positioning hole, and the centrifugal disc assembly is horizontally positioned and radially centered.
In at least one embodiment, the centrifugal mechanism further includes a vibration reduction mechanism including a vibration reduction spring connected with the centrifugal disk assembly, and a housing, the centrifugal disk assembly being mounted to the housing via the vibration reduction spring,
the positioning piece can be pressed against the centrifugal disc assembly under the driving of the positioning driving mechanism, so that the centrifugal disc assembly overcomes the elastic acting force of the damping spring and moves for a preset distance in the vertical direction.
In at least one embodiment, the positioning member comprises a positioning shaft extending vertically, the positioning hole comprises at least a central positioning hole opened at the central position of the centrifugal plate assembly,
the positioning shaft can move along the vertical direction under the driving of the positioning driving mechanism and is inserted into the central positioning hole, so that the centrifugal disc assembly is horizontally positioned and radially and centrally positioned.
In at least one embodiment, the positioning shaft is formed with a shaft shoulder portion that presses against the centrifuge disk assembly during insertion of the positioning shaft into the centrally located hole so that the centrifuge disk assembly moves a predetermined distance in a vertical direction along with the positioning shaft.
In at least one embodiment, the centrifugal disk assembly includes a centrifugal disk portion on which a plurality of detection baffles are disposed, the plurality of detection baffles being evenly spaced apart along a circumferential direction of the centrifugal disk portion,
the circumferential detection sensor positions the centrifuge disk assembly in its circumferential direction by detecting the detection baffle.
In at least one embodiment, the centrifugal disk assembly includes a centrifugal disk portion and a connecting shaft portion, the centrifugal disk portion is in driving connection with a centrifugal motor through the connecting shaft portion, the centrifugal motor is capable of driving the centrifugal disk assembly to rotate,
the vibration reduction mechanism further comprises a vibration reduction connecting piece, the vibration reduction connecting piece is connected with the centrifugal motor, one end of the vibration reduction spring is connected with the vibration reduction connecting piece, and the other end of the vibration reduction spring is connected to the shell, so that the vibration reduction spring can reduce vibration of the whole formed by the centrifugal disc assembly and the centrifugal motor.
In at least one embodiment, the centrifuge mechanism includes a housing having a top cover defining a centrifuge cup access opening and a sample fill opening.
In at least one embodiment, the centrifugation mechanism further comprises a shielding mechanism comprising a rotary drive mechanism and a baffle,
the baffle plate is provided with a first shielding part and a second shielding part,
the rotary driving mechanism can drive the baffle plate to rotate, so that the first shielding part shields the inlet and the outlet of the centrifugal cup, and the second shielding part shields the sample filling port.
In at least one embodiment, the centrifugation mechanism further comprises a cup detection sensor for detecting the presence of a centrifugation cup below the sample fill port.
The invention also provides an in vitro detection analyzer, which comprises the centrifugal mechanism in any one of the above embodiments.
By adopting the technical scheme, the invention provides the centrifugal mechanism, the centrifugal disc assembly can be accurately positioned in the circumferential direction by arranging the circumferential positioning mechanism, the positioning holes are formed in the centrifugal disc assembly, the centrifugal disc assembly can be horizontally positioned and radially and centrally positioned by arranging the horizontal positioning mechanism, accordingly, a centrifugal cup on the centrifugal disc assembly can be accurately positioned, and a mechanical arm for automatically grabbing the centrifugal cup can accurately assemble and disassemble the centrifugal cup, so that the failure of a working system due to the fact that the centrifugal cup cannot be accurately assembled and disassembled is avoided.
It can be understood that the in vitro detection analyzer with the centrifugal mechanism has the same beneficial effects.
Drawings
Fig. 1 shows a schematic structural view of a centrifugal mechanism according to the invention.
Fig. 2 shows a schematic view of a part of the structure in fig. 1.
Fig. 3 shows a longitudinal section of fig. 1.
Fig. 4 shows a partial cross-sectional view of fig. 1.
Fig. 5 shows a transverse cross-sectional view of fig. 1.
Fig. 6 shows an exploded view of the shielding mechanism and the top cover.
Description of the reference numerals
1, a shell; 11 a cylindrical body; 111 a bottom wall portion; 12 a top cover; 121 centrifugal cup inlet and outlet; 122 sample fill port; 13 a protective cover; 14 a centrifugal space; 15 mounting seats;
2, a centrifugal plate assembly; 21 a centrifuge disk portion; 211 a centrifuge cup holder; 212 detecting the baffle; 22 connecting the shaft part; 23, a central positioning hole; 231 a first aperture; 232 a second aperture; 24 positioning the bearing;
3 centrifugal motor; 31 an output shaft;
4, a vibration damping mechanism; 41 a damping spring; 42 a vibration damping connection; 43 a base;
5, a circumferential positioning mechanism; 51 a circumferential detection sensor; 52 a sensor mount;
6, a horizontal positioning mechanism; 61 positioning the motor; 62 positioning the shaft; 621 a shaft shoulder;
7 a shielding mechanism; 71 a rotary drive motor; 72 baffle plates; 721 a first shielding part; 722 a second shielding part; 73 turn on the sensor; 74 a closed sensor;
8, a cup falling channel; 9 cup detection sensors; 10 centrifugal cup.
Detailed Description
Exemplary embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the detailed description is only intended to teach one skilled in the art how to practice the invention, and is not intended to be exhaustive or to limit the scope of the invention.
Reference to "connected" in the present invention includes both direct connection and indirect connection through intermediate members.
An embodiment of a centrifugal mechanism according to the invention is described in detail below with reference to fig. 1 to 6.
In the present embodiment, as shown in fig. 1 and 2, the centrifugal mechanism includes a housing 1, a centrifugal disk assembly 2, a centrifugal motor 3, a vibration reduction mechanism 4, a circumferential positioning mechanism 5, a horizontal positioning mechanism 6, a shielding mechanism 7, a cup dropping passage 8, and a cup detection sensor 9.
In the present embodiment, as shown in fig. 1 to 3, the housing 1 includes a cylindrical body 11, a top cover 12, and a protective cover 13. The cylindrical body 11 and the top cover 12 are connected to form a centrifugal space 14. The centrifuge disc assembly 2 is partly mounted in this centrifuge space 14. A protective cover 13 is provided above the top cover 12 for protecting the respective components mounted on the top cover 12.
As shown in fig. 1 and 3, the bottom wall 111 of the cylindrical body 11 is fixedly connected to the mounting seat 15 by a fastener. It is understood that the mounting base 15 may be fixedly mounted to other structures (e.g., a housing portion of an in vitro test analyzer) such that the housing 1 is fixed.
As shown in FIG. 6, the top cover 12 is provided with a centrifuge cup inlet/outlet 121 and a sample filling port 122. Wherein the centrifuge cup access opening 121 is used for loading or unloading the centrifuge cup 10 (see fig. 2), and the sample filling opening 122 is used for passing a filling needle to fill the sample. It will be appreciated that the protective cap 13 should have openings corresponding to the centrifuge cup access port 121 and the sample fill port 122, respectively.
In the present embodiment, as shown in fig. 3, the centrifuge disk assembly 2 includes a centrifuge disk portion 21, a connecting shaft portion 22, and a center positioning hole 23. The central positioning hole 23 is opened along the axial center of the centrifugal disk assembly 2 through the centrifugal disk portion 21 and the connecting shaft portion 22. It is understood that the centrifuge disk part 21 and the connecting shaft part 22 may be provided separately or may be integrally molded.
In the present embodiment, as shown in fig. 2, a plurality of centrifuge cup holders 211 are provided on the outer periphery of the centrifuge disk part 21, and the plurality of centrifuge cup holders 211 are provided at regular intervals in the circumferential direction of the centrifuge disk part 21. The centrifuge cup holder 211 is adapted to receive the centrifuge cup 10.
As shown in fig. 4, the centrifuge disk portion 21 is provided with a plurality of detection baffles 212, and the plurality of detection baffles 212 are arranged at regular intervals in the circumferential direction of the centrifuge disk portion 21. The detection baffle 212 is located radially inward of the centrifuge cup holder 211 in the radial direction of the centrifuge disk portion 21. The detection baffle 212 is used to cooperate with a circumferential detection sensor 41 described below to enable the centrifuge disk portion 21 to be positioned in the circumferential direction.
As shown in fig. 3, the connection shaft portion 22 is mounted below the centrifuge disk portion 21, and the lower portion of the connection shaft portion 22 is drivingly connected to the centrifuge motor 3.
The center positioning hole 23 is a stepped hole, and the center positioning hole 23 includes a first hole 231 and a second hole 232. The first hole 231 has a larger hole diameter than the second hole 232, and the first hole 231 is located above the second hole 232.
As shown in fig. 3, the first hole 231 is provided with a positioning bearing 24, a center line of a bearing hole of the positioning bearing 24 is collinear with a center line of the first hole 231, and the positioning bearing 24 is used for cooperating with a positioning shaft 62 described below to realize horizontal positioning and radial center positioning of the centrifugal disk assembly 2.
In the present embodiment, as shown in fig. 3, the centrifugal motor 3 is disposed below the connecting shaft portion 22, the output shaft 31 of the centrifugal motor 3 is inserted into the second hole 232, and the output shaft 31 of the centrifugal motor 3 is connected with the connecting shaft portion 22 through a set screw, so that the centrifugal motor 3 can drive the centrifugal disc assembly 2 to rotate.
In the present embodiment, as shown in fig. 2 and 3, the damper mechanism 4 includes a damper spring 41, a damper link 42 (e.g., a link plate), and a base 43.
The damping spring 41 is arranged in the height direction between the damping connection piece 42 and the base 43, the two ends of the damping spring 41 are respectively connected with the damping connection piece 42 and the base 43, and the damping connection piece 42 is connected with the casing of the centrifugal motor 3. In this way, the damping spring 41 can damp the centrifugal motor 3 when the centrifugal motor 3 is operating.
As shown in fig. 3, the base 43 is fixedly connected to the bottom wall 111 of the cylindrical body 11 by a fastener. It will be appreciated that both the centrifugal motor 3 and the centrifuge disk assembly 2 are in a floating condition.
In the present embodiment, the output shaft 31 of the centrifugal motor 3 is in driving connection with the centrifugal disk assembly 2, and the housing of the centrifugal motor 3 is fixedly connected to the bottom wall portion 111 of the housing 1 through the damping connection member 42, the damping spring 41, the base 43 and the fastening member. In this way, the damping spring 41 is able to damp the entire assembly of the centrifugal motor 3 and the centrifugal disk assembly 2 well.
In the present embodiment, as shown in fig. 4, the circumferential positioning mechanism 5 includes a circumferential detection sensor 51 (e.g., an optical coupling sensor) and a sensor mount 52. The circumferential direction detection sensor 51 is fixedly attached to the bottom wall 111 of the cylindrical body 11 via a sensor mount 52.
In the present embodiment, the circumferential direction detection sensor 51 can detect the detection flapper 212. In this way, since the plurality of detection baffles 212 are uniformly spaced apart in the circumferential direction of the centrifugal disk assembly 2, the detection of the detection baffles 212 by the circumferential detection sensor 51 can accurately control the rotation angle of the centrifugal disk assembly 2, and thus the circumferential position of each centrifugal cup holder 211 (corresponding to the centrifugal cup 10) can be accurately positioned.
In the present embodiment, as shown in fig. 3, the horizontal positioning mechanism 6 includes a positioning motor 61 (positioning drive mechanism) and a positioning shaft 62 (positioning member) that are drivingly connected. The positioning motor 61 is installed on the top cover 12, the positioning shaft 62 extends vertically, and the positioning motor 61 can drive the positioning shaft 62 to reciprocate along the vertical direction.
When the centrifugal disk assembly 2 needs to be horizontally positioned and radially centered, the positioning shaft 62 is driven by the positioning motor 61 to vertically move downward into the centering hole 23 (inserted into the bearing hole of the positioning bearing 24), part of the outer wall surface of the positioning shaft 62 completely contacts with the inner wall surface of the positioning bearing 24, so that the central axis of the centrifugal disk assembly 2 is collinear with the central axis of the positioning shaft 62, and accordingly, the centrifugal disk assembly 2 realizes horizontal positioning and radial centering because the positioning shaft 62 is vertically arranged.
In the present embodiment, as shown in fig. 3, a shaft shoulder 621 is formed on the positioning shaft 62, and during the vertical downward movement of the positioning shaft 62, the shaft shoulder 621 can abut against the upper end surface of the positioning bearing 24, so that the centrifugal disk assembly 2 moves vertically downward by a predetermined distance along with the positioning shaft 62 (during which the centrifugal disk assembly 2 overcomes the elastic force of the damping spring 41). It should be understood that the "predetermined distance" can be set reasonably according to actual requirements, and after the predetermined distance is set, the predetermined distance can be adjusted according to the permanent deformation degree of the damping spring 41. In this way, by moving the centrifuge disc assembly 2 vertically downwards a predetermined distance together with the positioning shaft 62, it is possible to have the centrifuge disc assembly 2 at the same height position after each positioning, i.e. to achieve a precise positioning of the centrifuge disc assembly 2 in the height direction.
It follows that the horizontal positioning mechanism 6, in combination with the circumferential positioning mechanism 5, enables accurate positioning of the centrifuge disk assembly 2 in the centrifuge space 14 (corresponding to accurate positioning of the centrifuge cup holder 211 and the centrifuge cup 10), and thus enables a robot arm for automatically gripping the centrifuge cup 10 to accurately load and unload the centrifuge cup 10.
In the present embodiment, as shown in fig. 5 and 6, the shutter mechanism 7 is provided on the top cover 12. The shutter mechanism 7 includes a rotation driving motor 71 (rotation driving mechanism), a shutter 72, an open sensor 73 (e.g., an optical coupling sensor), and a close sensor 74 (e.g., an optical coupling sensor).
The rotary driving motor 71 is in transmission connection with the baffle 72, and the rotary driving motor 71 is used for driving the baffle 72 to rotate.
The shutter 72 has a first shielding portion 721 and a second shielding portion 722. The first shielding portion 721 shields the centrifuge cup inlet/outlet 121, and the second shielding portion 722 shields the sample filling port 122.
In the present embodiment, the rotation driving motor 71 drives the blocking piece 72 to rotate, when the blocking piece 72 triggers the opening sensor 73, the system can determine that the blocking piece 72 does not shield the centrifuge cup inlet/outlet 121 and the sample filling port 122, and at this time, the centrifuge cup 10 can be assembled and disassembled or the sample can be filled; when the flap 72 triggers the closure sensor 74, the system may determine that the flap 72 is covering the centrifuge cup access port 121 and the sample fill port 122, at which point the centrifuge mechanism may be operating centrifugally. It can be understood that the arrangement of the shielding mechanism 7 can improve the safety of the centrifugal mechanism during operation.
In the present embodiment, as shown in fig. 1, the upper end of the cup drop passage 8 is connected to the bottom wall portion 111, and the upper end of the cup drop passage 8 is located directly below the centrifuge cup inlet/outlet 121 in the vertical direction. Thus, if the centrifugal cup 10 is not accurately placed in the centrifugal cup seat 211, the centrifugal cup 10 can fall into the cup dropping channel 8 and move to the outside of the centrifugal space 14 along the cup dropping channel 8, and the centrifugal cup 10 will not be retained in the centrifugal space 14, thereby avoiding affecting the normal operation of the centrifugal mechanism.
In the present embodiment, as shown in fig. 2, a cup detection sensor 9 (e.g., a proximity switch) is provided on the bottom wall portion 111, and the cup detection sensor 9 is provided directly below the sample fill inlet 122 in the vertical direction. The cup detection sensor 9 can detect the presence or absence of the centrifugal cup 10 in the centrifugal cup holder 211 located immediately below the sample fill port 122, preventing the sample fill operation from being performed without the presence of the centrifugal cup 10.
By adopting the technical scheme, the centrifugal mechanism at least has the following advantages:
(1) in the centrifugal mechanism, the centrifugal disc component can be accurately positioned in the circumferential direction by arranging the circumferential positioning mechanism, the positioning hole is formed in the centrifugal disc component, the centrifugal disc component can be horizontally positioned and radially and centrally positioned by arranging the horizontal positioning mechanism, and accordingly, a centrifugal cup on the centrifugal disc component can be accurately positioned.
(2) In the centrifugal mechanism of the present invention, the centrifugal disk assembly can be accurately positioned in the vertical direction by enabling the positioning shaft to move vertically downward by a predetermined distance together with the centrifugal disk assembly.
(3) In the centrifugal mechanism, the shielding mechanism is arranged, so that the safety of the centrifugal mechanism during working can be improved.
The above embodiments have described the technical solutions of the present invention in detail, but it should be added that:
(1) although it has been described in the above embodiments that the positioning member is a positioning shaft, and the horizontal positioning and the radial center positioning of the centrifugal plate assembly are achieved by the engagement of the positioning shaft and the center positioning hole, the present invention is not limited thereto, and the positioning member may be tapered or otherwise shaped. The number of the positioning pieces can be multiple, the positioning pieces can be multiple positioning pieces with the same shape, and the positioning pieces can also be a combination of positioning pieces with different shapes. It will be appreciated that there may be a plurality of positioning holes (not limited to one central positioning hole) and the shape and position of the positioning holes may correspond to the corresponding positioning members.
(2) Although in the above-described embodiment, it has been described that the positioning motor is used as the positioning drive mechanism, the present invention is not limited to this, and a drive cylinder or another drive mechanism may be used as the positioning drive mechanism.
(3) Although it is described in the above embodiment that the circumferential direction detection sensor may be an optical coupling sensor, the present invention is not limited thereto, and the circumferential direction detection sensor may be an angle sensor capable of detecting the rotation angle of the centrifugal plate assembly.
(4) Although the positioning bearing is disposed in the first hole in the above-mentioned embodiment, the present invention is not limited to this, and the positioning bearing may not be disposed in the first hole, the positioning shaft may directly contact with the wall portion of the centrifugal disk assembly defining the center positioning hole to achieve horizontal positioning and radial center positioning of the centrifugal disk assembly, and the shoulder portion of the positioning shaft may directly abut against the stepped surface of the center positioning hole, so that the centrifugal disk assembly moves along with the positioning shaft.
In addition, the invention also provides an in-vitro detection analyzer, which comprises the centrifugal mechanism in the embodiment.
Claims (10)
1. A centrifugal mechanism is characterized in that the centrifugal mechanism comprises a centrifugal disc component (2), a circumferential positioning mechanism (5) and a horizontal positioning mechanism (6),
the centrifugal disc component (2) is provided with a positioning hole along the vertical direction,
the circumferential positioning mechanism (5) comprises a circumferential detection sensor (51), the circumferential detection sensor (51) is used for detecting the circumferential position of the centrifugal disc assembly (2) so that the centrifugal disc assembly (2) is positioned in the circumferential direction,
the horizontal positioning mechanism (6) comprises a positioning driving mechanism and a positioning piece which are in transmission connection, the positioning driving mechanism can drive the positioning piece to move in the vertical direction, so that the positioning piece is inserted into the positioning hole, and the centrifugal disc assembly (2) is horizontally positioned and radially centered.
2. The centrifugal mechanism according to claim 1, further comprising a damping mechanism (4) and a housing (1), the damping mechanism (4) comprising a damping spring (41) connected with the centrifugal disc assembly (2), the centrifugal disc assembly (2) being mounted to the housing (1) via the damping spring (41),
the positioning piece can be pressed against the centrifugal disc assembly (2) under the driving of the positioning driving mechanism, so that the centrifugal disc assembly (2) overcomes the elastic acting force of the damping spring (41) and moves for a preset distance in the vertical direction.
3. The centrifugal mechanism according to claim 1, wherein said positioning element comprises a vertically extending positioning shaft (62), said positioning aperture comprising at least a centrally positioned aperture (23) opening in a central position of said centrifuge disc assembly (2),
the positioning shaft (62) can move along the vertical direction under the driving of the positioning driving mechanism to be inserted into the central positioning hole (23), so that the centrifugal disc assembly (2) is horizontally positioned and radially centered.
4. A centrifugal mechanism according to claim 3, wherein the positioning shaft (62) is formed with a shaft shoulder (621), the shaft shoulder (621) pressing against the centrifuge disc assembly (2) during insertion of the positioning shaft (62) in the centrally positioned hole (23) such that the centrifuge disc assembly (2) moves with the positioning shaft (62) a predetermined distance in a vertical direction.
5. The centrifugal mechanism according to claim 1, wherein the centrifuge disk assembly (2) comprises a centrifuge disk portion (21), wherein a plurality of detection baffles (212) are arranged on the centrifuge disk portion (21), wherein the plurality of detection baffles (212) are arranged at regular intervals in the circumferential direction of the centrifuge disk portion (21),
the circumferential detection sensor (51) positions the centrifuge disk assembly (2) in the circumferential direction thereof by detecting the detection flap (212).
6. The centrifugal mechanism according to claim 2, wherein the centrifuge disc assembly (2) comprises a centrifuge disc part (21) and a connecting shaft part (22), the centrifuge disc part (21) being in driving connection with a centrifuge motor (3) via the connecting shaft part (22), the centrifuge motor (3) being capable of driving the centrifuge disc assembly (2) in rotation,
damping mechanism (4) still include damping connecting piece (42), damping connecting piece (42) with centrifugal motor (3) are connected, the one end of damping spring (41) with damping connecting piece (42) are connected, the other end of damping spring (41) is connected to casing (1), make damping spring (41) can be to centrifugal plate subassembly (2) with the whole that centrifugal motor (3) formed carries out the damping.
7. The centrifugal mechanism according to claim 1, wherein the centrifugal mechanism comprises a housing (1), and a top cover of the housing (1) is provided with a centrifuge cup inlet/outlet (121) and a sample filling port (122).
8. The centrifugal mechanism according to claim 7, further comprising a shutter mechanism (7), said shutter mechanism (7) comprising a rotary drive mechanism and a flap (72),
the baffle plate (72) is provided with a first shielding part (721) and a second shielding part (722),
the rotation driving mechanism can drive the stopper (72) to rotate, so that the first shielding portion (721) shields the centrifuge cup entrance/exit (121), and the second shielding portion (722) shields the sample filling port (122).
9. The centrifuge mechanism according to claim 7, further comprising a cup detection sensor (9), said cup detection sensor (9) for detecting the presence of a centrifuge cup (10) below said sample fill port (122).
10. An in vitro test analyzer characterized in that it comprises a centrifugation mechanism according to any of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010111820.3A CN111195565A (en) | 2020-02-24 | 2020-02-24 | Centrifugal mechanism and in-vitro detection analyzer |
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| CN202010111820.3A CN111195565A (en) | 2020-02-24 | 2020-02-24 | Centrifugal mechanism and in-vitro detection analyzer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611881A (en) * | 2020-12-11 | 2021-04-06 | 杭州微智兆智能科技有限公司 | Detection sample adding positioning mechanism |
| CN115301417A (en) * | 2022-08-08 | 2022-11-08 | 中元汇吉生物技术股份有限公司 | Sample centrifugation mechanism and sample analyzer |
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| CN115301417A (en) * | 2022-08-08 | 2022-11-08 | 中元汇吉生物技术股份有限公司 | Sample centrifugation mechanism and sample analyzer |
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