CN114487451A - Sample introduction mechanism, sample introduction method and sample analyzer - Google Patents

Sample introduction mechanism, sample introduction method and sample analyzer Download PDF

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Publication number
CN114487451A
CN114487451A CN202011270781.8A CN202011270781A CN114487451A CN 114487451 A CN114487451 A CN 114487451A CN 202011270781 A CN202011270781 A CN 202011270781A CN 114487451 A CN114487451 A CN 114487451A
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China
Prior art keywords
tube rack
test tube
sample
test
state
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Pending
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CN202011270781.8A
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Chinese (zh)
Inventor
黄劼
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Shenzhen Dymind Biotechnology Co Ltd
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Shenzhen Dymind Biotechnology Co Ltd
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Priority to CN202011270781.8A priority Critical patent/CN114487451A/en
Publication of CN114487451A publication Critical patent/CN114487451A/en
Pending legal-status Critical Current

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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
    • G01N35/00584—Control arrangements for automatic analysers
    • G01N35/0092—Scheduling
    • 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
    • G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
    • G01N35/025—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations having a carousel or turntable for reaction cells or cuvettes
    • 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
    • G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
    • G01N35/04—Details of the conveyor system
    • 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
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • 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
    • G01N35/00584—Control arrangements for automatic analysers
    • G01N35/0092—Scheduling
    • G01N2035/0094—Scheduling optimisation; experiment design
    • 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
    • G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
    • G01N35/04—Details of the conveyor system
    • G01N2035/0439—Rotary sample carriers, i.e. carousels
    • G01N2035/0444—Rotary sample carriers, i.e. carousels for cuvettes or reaction vessels
    • 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
    • G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
    • G01N35/04—Details of the conveyor system
    • G01N2035/046—General conveyor features
    • G01N2035/0465—Loading or unloading the conveyor
    • 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
    • G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
    • G01N35/04—Details of the conveyor system
    • G01N2035/0474—Details of actuating means for conveyors or pipettes
    • G01N2035/0475—Details of actuating means for conveyors or pipettes electric, e.g. stepper motor, solenoid

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)

Abstract

The application provides a sampling mechanism, this sampling mechanism includes drive transport mechanism, test-tube rack positioner and dial-back mechanism, wherein, drive transport mechanism includes the conveyer belt, drive transport mechanism is used for driving the test-tube rack to transport on transfer rails, test-tube rack positioner is used for being positioned the test-tube rack in detecting the position, dial-back mechanism includes the separation blade, the separation blade has the state of dodging the test-tube rack and the backstop state that blocks the test-tube rack, dial-back mechanism can stir the relative conveyer belt of test-tube rack when the separation blade is in the backstop state. In this way, the sampling mechanism that this application provided simple structure can prevent to produce relative displacement between test-tube rack and the conveyer belt, can realize the test-tube rack and detect the accurate location between the position when the test-tube rack needs retest to roll back simultaneously.

Description

Sample introduction mechanism, sample introduction method and sample analyzer
Technical Field
The application relates to the technical field of medical instruments, in particular to a sample introduction mechanism, a sample introduction method and a sample analyzer.
Background
The automatic sample injector is an intelligent and automatic sample injector, and only needs to set sample injection parameters and place a sample to be detected into a test tube, and the conveyor belt can automatically transport the sample to the detection instrument, so that the automatic sample injection process can be completed. The automatic sample injector can greatly reduce manual operation, improves the detection efficiency, and is widely applied to the field of medical detection.
The existing automatic sampling equipment needs to support rollback recheck, but the structure is complex, and in the sampling process of the automatic sampling equipment adopting a plane synchronous toothed belt, because the step number of a motor is inconsistent with the actual sampling step number, relative displacement can be generated between a test tube rack and a synchronous belt.
Disclosure of Invention
The application provides a kind mechanism and sample analyzer advance to can produce relative displacement between automatic sampling mechanism test-tube rack and the hold-in range among the solution prior art, and roll back the technical problem that the reinspection structure is complicated.
In order to solve the technical problem, the application adopts a technical scheme that: providing a sample injection mechanism, the sample injection mechanism comprising:
the driving transmission mechanism comprises a transmission belt and is used for driving the test tube rack to convey on the transmission track;
the test tube rack positioning device is used for positioning the test tube rack at the detection position;
the withdrawing mechanism comprises a separation blade, the separation blade has an avoiding state of the test tube rack and a blocking state of the test tube rack, and the separation blade is in the blocking state, the withdrawing mechanism can enable the test tube rack to be relative to the conveying belt to be withdrawn.
According to a specific embodiment of this application, test-tube rack positioner is magnetism and inhales the structure, the conveyer belt is provided with first magnetism and inhales the piece, first magnetism inhale the piece be used for with a magnetism actuation is inhaled to the second magnetism that the test-tube rack set up.
According to a specific embodiment of this application, first magnetism is inhaled the piece and is led the magnetic steel wire, many magnetic steel wires parallel arrangement in on the conveyer belt.
According to a specific embodiment of this application, the piece is inhaled to first magnetism is magnetic conduction coating, magnetic conduction powder, magnetic conduction piece, establishes in the conveyer belt or surface, the piece is inhaled to first magnetism is continuous distribution or is the discrete distribution.
The poking-back mechanism further comprises a rod body, the rod body is connected with the blocking piece, the rod body is used for driving the blocking piece to be switched into the avoiding state or the stopping state when rotating, the rod body moves axially, the blocking piece is used for enabling the test tube rack to be opposite to the conveyor belt to poke when the stopping state exists.
According to a specific embodiment of this application, dial-back mechanism includes rotary mechanism, the body of rod with rotary mechanism connects, rotary mechanism is used for the drive the body of rod axial rotation in order to with the fin switches into dodge the state or backstop state, rotary mechanism still is used for the drive the body of rod axial displacement.
In order to solve the technical problem, the application adopts a technical scheme that: the sample injection method based on the sample injection mechanism is provided, and comprises the following steps:
the conveying belt receives positioning loading of the test tube rack;
the driver drives the conveyor belt to rotate so as to drive the test tube rack to pass through a sampling position from the loading position;
the blocking piece is driven by the withdrawing mechanism to be in the avoiding state so as to allow the test tube rack to pass through, or the withdrawing mechanism is driven by the withdrawing mechanism to be in the stopping state and enable the test tube rack to be opposite to the conveying belt to be withdrawn.
According to a specific embodiment of the application, the withdrawing mechanism drives the blocking piece to be in the avoiding state or in the stopping state, and the blocking piece rotates 90 degrees in the forward direction or the direction.
In order to solve the technical problem, the application adopts a technical scheme that: providing a sample analyzer, the sample analyzer comprising:
the loading mechanism is used for loading the test tube rack;
the sampling mechanism is arranged at the downstream of the loading mechanism and is used for sampling the test tubes on the test tube rack;
and the unloading mechanism is arranged at the downstream of the sampling mechanism and used for unloading the test tube rack.
The sample injection mechanism is described above.
In order to solve the technical problem, the application adopts a technical scheme that: there is provided a sample analyzer assembly line comprising at least two sample analyzers, each sample analyzer comprising the sample introduction mechanism described above, the conveyor belts of adjacent sample analyzers abutting each other to allow the racks to be transported in engagement by the adjacent conveyor belts.
The beneficial effect of this application is: be different from prior art's condition, the sampling mechanism that this application provided drives the test-tube rack at the conveyer belt and advances kind in-process through being provided with test-tube rack positioner, can prevent that test-tube rack and conveyer belt from taking place relative displacement, through setting up the separation blade at dial-back mechanism, when the test-tube rack need retest to roll back, the separation blade is in the backstop state and blocks the test-tube rack, and the separation blade can be stirred the test-tube rack and rolled back to arbitrary detection position simultaneously, fixes a position through test-tube rack positioner to this detection position is pinpointed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a sample injection mechanism provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a test tube rack positioning device of a sample injection mechanism provided in an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a first magnetic element of a sample injection mechanism provided in an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a second magnetic element of a sample injection mechanism provided in an embodiment of the present application;
fig. 5 is a schematic view of an avoiding state structure of a sample injection mechanism provided in an embodiment of the present application;
fig. 6 is a schematic flow chart of a sample injection method performed based on a sample injection mechanism according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are referred to in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
Referring to fig. 1 to 2, a sample feeding mechanism 1 is provided in an embodiment of the present application, where the sample feeding mechanism 1 includes a driving transmission mechanism 10, a test tube rack positioning device 20, and a back-shifting mechanism 30. The driving transmission mechanism 10 comprises a motor 11 and a conveyor belt 12, wherein the motor 11 is used for driving the conveyor belt 12 to transmit, so as to drive the test tube rack 40 on the conveyor belt 12 to transport. The test tube rack positioning device 20 is of a magnetic attraction structure and comprises a first magnetic attraction piece 21 arranged on the conveying belt 12 and a second magnetic attraction piece 22 arranged on the test tube rack 40, wherein the first magnetic attraction piece 21 and the second magnetic attraction piece 22 can attract each other magnetically, so that when the conveying belt 12 moves, the conveying belt 12 and the test tube rack 40 can be relatively static and cannot generate relative displacement. The withdrawing mechanism 30 comprises a blocking piece 31, the blocking piece 31 has an avoiding state b (see fig. 5) for avoiding the test tube rack 40 and a stopping state a for blocking the test tube rack 40, when the sample sampling and the detection are finished, and the test tube rack 40 needs to be rechecked and withdrawn, the blocking piece 31 is in the stopping state a, the withdrawing mechanism 30 drives the blocking piece 31 to withdraw the test tube rack 40 to the detection position, the second magnetic attraction piece 22 and the detection position through the test tube rack 40 are attracted, and the test tube rack 40 stops withdrawing, so that the test tube rack is accurately positioned at the detection position.
Specifically, referring to fig. 3 to 4, in this embodiment, the first magnetic attraction member 21 is disposed at an edge of the conveyor belt 12, the first magnetic attraction member 21 may be a magnetic steel wire, and the magnetic steel wires are disposed on the conveyor belt 12 in parallel, so that tension of the conveyor belt 12 can be increased, and meanwhile, the test tube rack 40 and the conveyor belt 12 are magnetically attracted to position instead of conventional friction positioning, so that friction between the test tube rack 40 and the conveyor belt 12 can be reduced, wear of the conveyor belt 12 is reduced, and the service life of the conveyor belt 12 is prolonged. Alternatively, the first magnetic attraction member 21 may be a magnetic conductive coating, a magnetic conductive powder, or a magnetic conductive block, and is disposed in or on the surface of the conveyor belt 12, and is distributed continuously or discretely. The second magnetic part 22 is arranged on the side of the bottom of the test tube rack 40, and can realize magnetic positioning with the side of the first magnetic part 21. The second magnetic element 22 can be a magnet or other magnetic objects such as a magnetic conductive coating, a magnetic conductive powder, etc., and is distributed continuously or discretely.
Be different from prior art, the piece 22 is inhaled to the magnetism of 21 and second magnetism through setting up first magnetism respectively on conveyer belt 12 and test-tube rack 40 to advance kind mechanism 1 of this application, inhale the magnetism actuation location of piece 22 through first magnetism 21 and second magnetism and replace original friction location that relies on conveyer belt 12 and test-tube rack 40, make in conveyer belt 12 motion process, test-tube rack 40 can not produce relative displacement with conveyer belt 12, the location between test-tube rack 40 and the conveyer belt 12 is more accurate, and is stable, reduced the friction of test-tube rack 40 with conveyer belt 12 simultaneously, make conveyer belt 12's life longer.
Specifically, please refer to fig. 1 to 5, in this embodiment, the withdrawing mechanism 30 further includes a rod 32 and a rotating mechanism 33, one end of the rod 32 is connected to the blocking plate 31, and the other end is connected to the rotating mechanism 33. The blocking piece 31 is a rectangular or long-strip-shaped blocking plate with an arc, the rotating mechanism 33 can be a driving motor or a telescopic cylinder, and the rotating mechanism 33 drives the rod body 32 to rotate forward or reversely, so that the blocking piece 31 is driven to be switched into an avoiding state b or a stopping state a, namely the blocking piece 31 is driven to rotate forward by 90 degrees or reversely by 90 degrees. The retracted state b (shown in fig. 5) of the blocking piece 31 means that the blocking piece 31 is perpendicular to the test tube rack 40 in the vertical direction, and does not affect the transportation of the test tube rack 40 on the conveyor belt 12. The stop state a (shown in fig. 1) of the stopper 31 means that the stopper 31 is perpendicular to the test tube rack 40 in the horizontal direction and just blocks the test tube rack 40, so that the test tube rack 40 stops being transported on the conveyor belt 12. The rotating mechanism 33 can also be a telescopic cylinder, and the telescopic cylinder compresses the driving rod body 32 to axially extend and retract, so that the blocking piece 31 pushes the test tube rack 40 to retreat to a recheck detection position (not shown) on the conveyor belt 12 in the stopping state a, the recheck detection position comprises a code scanning position and a sampling position, and when the detection of a certain sample on the test tube rack 40 is abnormal, the test tube rack 40 needs to be controlled to retreat to the detection position for recheck. Be provided with electromagnet device at detecting the position, when the test-tube rack 40 was promoted by separation blade 31 and is detected the position, electromagnet device switched on, inhale mutually with the second magnetism on the test-tube rack 40 and inhale with location test-tube rack 40 to make test-tube rack 40 can accurate location detect the position, accurately accomplish this and detect the reinspection operation of position. The blocking piece 31 can rotate and withdraw the test tube rack 40 at any position of the sample introduction mechanism 1, so that a plurality of rows of test tube racks 40 can be conveyed on the conveyor belt 12 at the same time.
For example, when the test tube rack 40 needs to be retracted to the sampling position for retest, the rotation mechanism 33 rotates the driving rod 32 to rotate axially, so that the blocking piece 31 rotates 90 to be in the blocking state a, thereby blocking the test tube rack 40. The rotating mechanism 33 drives the rod body 32 to axially extend and retract, so that the blocking piece 31 pushes the test tube rack 40 to retract, when the test tube rack 40 retracts to a sampling position, the electromagnet device of the sampling position is switched on and attracts the second magnetic attraction piece 22 of the test tube rack 40 to position the test tube rack 40, and therefore puncture sampling of test tubes is accurately performed. After sampling, the rotating mechanism 33 rotates to drive the rod body 32 to rotate axially and reversely, so that the blocking piece 31 rotates reversely by 90 degrees, and the test tube rack 40 moves forwards under the transmission of the conveyor belt 12.
Be different from prior art, the sampling mechanism 1 of this application drives the separation blade 31 through rotary mechanism 33 and rotates 90 degrees in order to block the test-tube rack 40, and rotary mechanism 33 drive rod body 32 is flexible so that separation blade 31 promotes the test-tube rack 40 and moves back to the detection position, and not only simple structure has realized the accurate location of reinspection detection position simultaneously, has improved reinspection operating efficiency.
The embodiment of the application provides a sample analyzer, and the sample analyzer comprises a loading mechanism, a sampling mechanism, an unloading mechanism and a sampling mechanism 1. Wherein, loading mechanism is used for loading test-tube rack 40, and loading mechanism low reaches are located to the sampling mechanism for sample the test tube on the test-tube rack 40, and the mechanism low reaches are located to the unloading mechanism, are used for uninstalling test-tube rack 40. The sample analyzer can support the accurate positioning of the test tube rack 40 and the rollback rechecking of the test tube rack 40, and improves the detection efficiency.
The embodiment of the application provides a sample analyzer assembly line, this sample analyzer assembly line includes two at least sample analyzers, each sample analyzer all includes into kind mechanism 1, the conveyer belt 12 of adjacent sample analyzer borders on each other in order to allow test-tube rack 40 to link up the transmission through adjacent conveyer belt 12, the transportation route of test-tube rack 40 has been lengthened, sample analyzer multimachine cascades and test-tube rack 40's pipeline transmission has been realized, thereby can realize that multirow test-tube rack 40 advances kind simultaneously, many sample analyzers detect simultaneously, holistic detection efficiency has been improved.
The embodiment of the present application provides a sample injection method based on the sample injection mechanism 1, and the flowchart of the method refers to fig. 6.
Step S10, the conveyor belt 12 receives the test tube rack 40 positioning load.
In this step, the receiving of the test tube racks 40 by the conveyor belt 12 may be accomplished by a loading mechanism. For example, the loading mechanism may be provided with a position sensor to identify the positioning of the test tube rack 40, or the loading mechanism may be provided with a magnetic component, and the magnetic component of the loading mechanism is attracted to the second magnetic component 22 of the test tube rack 40 to identify the positioning of the test tube rack 40, so that the test tube rack can be loaded onto the conveyor belt 12 for transportation.
In step S20, the driver rotates the conveyor belt 12 to move the test tube rack 40 from the loading position to the sampling position.
In this step, the driver may be a motor, which drives the conveyor belt 12 to rotate, thereby driving the test tube rack 40 to move on the conveyor belt 12 from the loading position of the loading mechanism to the sampling position of the sampling mechanism. When the conveyor belt 12 moves, the first magnetic attraction piece 21 of the conveyor belt 12 and the second magnetic attraction piece 22 of the test tube rack 40 are magnetically attracted, so that the conveyor belt 12 and the test tube rack 40 can be relatively static and cannot generate relative displacement.
In step S30, the retracting mechanism 30 drives the blocking piece 31 to be in the avoiding state b to allow the test tube rack 40 to pass through, or the retracting mechanism 30 drives the blocking piece 31 to be in the stopping state a to retract the test tube rack 40 relative to the conveyor belt 12.
In this step, the retracting mechanism 30 includes a rotating mechanism 33, and when the sample sampling and detection are finished and the test tube rack 40 needs to be retested and retracted, the rotating mechanism 33 rotates to drive the rod body 32 to axially rotate, so that the blocking piece 31 rotates 90 degrees to be in a blocking state a, and the test tube rack 40 is blocked. The rotating mechanism 33 drives the rod body 32 to axially extend and retract, so that the blocking piece 31 pushes the test tube rack 40 to retract, when the test tube rack 40 retracts to a detection position, the electromagnet device of the detection position is switched on and attracts the second magnetic attraction piece 22 of the test tube rack 40 to position the test tube rack 40, and therefore the sample in the test tube is accurately rechecked. After sampling, the rotating mechanism 33 rotates to drive the rod body 32 to rotate reversely, so that the blocking piece 31 rotates reversely by 90 degrees to be in an avoiding state b, and the test tube rack 40 moves forward under the transmission of the conveyor belt 12.
In conclusion, those skilled in the art can easily understand that, the sampling mechanism 1 provided by the present application replaces the original friction positioning of the conveyor belt 12 and the test tube rack 40 by the first magnetic attraction piece 21 and the second magnetic attraction piece 22 arranged on the conveyor belt 12 and the test tube rack 40, so that in the moving process of the conveyor belt 12, the test tube rack 40 and the conveyor belt 12 do not generate relative displacement, the positioning between the test tube rack 40 and the conveyor belt 12 is more accurate and stable, meanwhile, the blocking piece 31 is driven to rotate by 90 degrees by the rotating mechanism 33, the rotating mechanism 33 drives the rod body 32 to stretch out and draw back so that the blocking piece 31 pushes the test tube rack 40 to return to the detection position, and therefore, the sampling mechanism is not only simple in structure, but also can precisely position the detection position for reinspection, and improves the efficiency of reinspection operation.
The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure, which are directly or indirectly applied to other related technical fields, are included in the scope of the present disclosure.

Claims (10)

1. A kind mechanism, characterized in that, it includes:
the driving transmission mechanism comprises a transmission belt and is used for driving the test tube rack to convey on the transmission track;
the test tube rack positioning device is used for positioning the test tube rack at the detection position;
the withdrawing mechanism comprises a separation blade, the separation blade has an avoiding state of the test tube rack and a blocking state of the test tube rack, and the separation blade is in the blocking state, the withdrawing mechanism can enable the test tube rack to be relative to the conveying belt to be withdrawn.
2. The sample introduction mechanism according to claim 1, wherein the test tube rack positioning device is a magnetic attraction structure, the conveyor belt is provided with a first magnetic attraction member, and the first magnetic attraction member is configured to magnetically attract a second magnetic attraction member provided on the test tube rack.
3. The sample feeding mechanism according to claim 2, wherein the first magnetic attraction member is a magnetic conductive steel wire, and a plurality of magnetic conductive steel wires are arranged in parallel on the conveyor belt.
4. The sample feeding mechanism according to claim 3, wherein the first magnetic attraction member is a magnetic conductive coating, a magnetic conductive powder, or a magnetic conductive block, and is disposed in or on the conveyor belt, and the first magnetic attraction member is distributed continuously or discretely.
5. The sampling mechanism of claim 1, further comprising a rod body, wherein the rod body is connected to the blocking piece, the rod body is used for driving the blocking piece to switch to the avoiding state or the stopping state when rotating, and the rod body moves axially and the blocking piece is used for shifting the test tube rack relative to the conveyor belt when the blocking state.
6. The sampling mechanism as claimed in claim 5, wherein the withdrawing mechanism comprises a rotating mechanism, the rod body is connected to the rotating mechanism, the rotating mechanism is configured to drive the rod body to rotate axially to switch the stopper to the avoiding state or the stopping state, and the rotating mechanism is further configured to drive the rod body to move axially.
7. A sample injection method based on the sample injection mechanism of any one of claims 1 to 6, wherein the sample injection method comprises the following steps:
the conveying belt receives positioning loading of the test tube rack;
the driver drives the conveyor belt to rotate so as to drive the test tube rack to pass through a sampling position from a loading position;
the blocking piece is driven by the withdrawing mechanism to be in the avoiding state so as to allow the test tube rack to pass through, or the withdrawing mechanism is driven by the withdrawing mechanism to be in the stopping state and enable the test tube rack to be opposite to the conveying belt to be withdrawn.
8. The sample introduction method according to claim 7, wherein when the retraction mechanism drives the blocking sheet to assume the avoiding state or the stopping state, the blocking sheet rotates 90 degrees in a forward direction or a direction.
9. A sample analyzer, the sample analyzer comprising:
the loading mechanism is used for loading the test tube rack;
the sampling mechanism is arranged at the downstream of the loading mechanism and is used for sampling the test tubes on the test tube rack;
the unloading mechanism is arranged at the downstream of the sampling mechanism and used for unloading the test tube rack;
the sample injection mechanism of any one of claims 1 to 6.
10. A sample analyzer pipeline comprising at least two sample analyzers, each sample analyzer comprising the sample introduction mechanism of any of claims 1-6, the conveyor belts of adjacent sample analyzers abutting each other to allow the racks to be transported in engagement via the adjacent conveyor belts.
CN202011270781.8A 2020-11-13 2020-11-13 Sample introduction mechanism, sample introduction method and sample analyzer Pending CN114487451A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011270781.8A CN114487451A (en) 2020-11-13 2020-11-13 Sample introduction mechanism, sample introduction method and sample analyzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011270781.8A CN114487451A (en) 2020-11-13 2020-11-13 Sample introduction mechanism, sample introduction method and sample analyzer

Publications (1)

Publication Number Publication Date
CN114487451A true CN114487451A (en) 2022-05-13

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