Sampler and detection system

Abstract

The utility model provides a sampler and a detection system, the sampler comprises a base, a loading mechanism, a first driving mechanism and a second driving mechanism, the loading mechanism is arranged at one side of the base and comprises a turntable and a plurality of sliding blocks; a plurality of guide mechanisms are arranged on the outer side face of the rotary disc and extend in the axial direction of the rotary disc. The slide block is arranged at the guide mechanism and can move along the guide mechanism, and the slide block is detachably connected with the sample container; the first driving mechanism is arranged on the base, is connected with the rotating disc and drives the rotating disc to rotate around the axis of the rotating disc; the second driving mechanism is arranged on the base and drives the sliding block located at the preset position to move in the axial direction of the rotary disc. The sampler is used for a detection system, the first driving mechanism drives the rotary table to rotate to achieve switching of the sample containers, the second driving mechanism drives the sliding block located at the preset position to move, connection or separation of the sampling head and the corresponding sample container is achieved, and the sampler has the advantages of being convenient to use and rapid in sampling.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection and analysis, and specifically relates to a sampler and a detection system. Background Art

[0002] When using a detection and analysis instrument such as a mass spectrometer to continuously sample and analyze multiple samples, it is desirable to place multiple samples on a sampler so as to realize the switching of samples by using the cooperation of a mechanical mechanism and a power mechanism, thereby reducing manual operation and improving the convenience of sampling. Therefore, it is necessary to provide a sampler that can accommodate multiple samples at the same time and can realize automatic switching of samples. Utility Model Content

[0003] The utility model aims to provide a sampler and a detection system, aiming to improve the sampling convenience of the detection and analysis instrument during the continuous analysis of multiple samples and reduce manual operations.

[0004] To achieve the above object, the utility model provides a sampler, comprising:

[0005] The base is a hollow structure with an inner cavity;

[0006] A loading mechanism is arranged on one side of the base and includes a turntable and a plurality of sliders, wherein the axial direction of the turntable extends along the arrangement direction of the turntable and the base; a plurality of guide mechanisms are arranged at equal intervals along the circumference thereof on the outer side of the turntable, and each of the guide mechanisms extends along the axial direction of the turntable; each of the sliders is arranged at one of the guide mechanisms and can perform reciprocating linear motion along the guide mechanism in the axial direction of the turntable, and the slider is also used to be detachably connected to the sample container;

[0007] a first driving mechanism, a part of which is disposed in the inner cavity and another part of which passes through the wall of the base and is connected to the turntable; the first driving mechanism is used to drive the turntable to rotate around its own axis to selectively locate one of the sliders at a preset position; and

[0008] The second driving mechanism is arranged on the base and is used for driving the slider located at the preset position to move along the axial direction of the rotating disk.

[0009] Optionally, the second driving mechanism includes a second power unit, a bearing unit and a magnetic assembly, wherein the second power unit is at least partially located in the inner cavity, the bearing unit is located on a side of the base facing the turntable, and the bearing unit is connected to the second power unit; the magnetic assembly includes at least a first magnetic member and a second magnetic member, the first magnetic member is arranged at an end of the slider facing the base, the second magnetic member is arranged at an end of the bearing unit facing the turntable, and the magnetic pole of the second magnetic member facing the turntable is the same as the magnetic pole of the first magnetic member facing the base;

[0010] The second driving mechanism is configured to drive the bearing part to move through the second power part, so that the second magnetic part is located at the preset position or deviates from the preset position.

[0011] Optionally, the magnetic assembly further includes a third magnetic member, the third magnetic member is arranged at one end of the bearing portion facing the turntable, and the third magnetic member is spaced apart from the second magnetic member; the magnetic pole of the end of the third magnetic member facing the turntable is different from the magnetic pole of the end of the second magnetic member facing the turntable;

[0012] The second driving mechanism is configured to selectively locate the second magnetic member or the third magnetic member at the preset position through the movement of the bearing portion.

[0013] Optionally, the bearing portion is configured to rotate around a preset axis when driven by the second power portion, and the preset axis extends along the axial direction of the turntable.

[0014] Optionally, the second power unit includes an electric servo, an output shaft of which is connected to the bearing unit; and / or the first driving mechanism includes a stepping motor.

[0015] Optionally, the first driving mechanism includes a first power unit and an auxiliary mechanism, wherein the auxiliary mechanism connects the first power unit and the turntable to allow the turntable to rotate in a preset direction under the driving of the first driving mechanism or an external force.

[0016] Optionally, the auxiliary mechanism comprises a ratchet assembly; the ratchet assembly comprises an inner ring, an outer ring and a pawl, the inner ring comprises a first segment and a second segment connected coaxially, the outer circumference of the first segment is smooth, the outer circumference of the second segment is provided with a plurality of teeth arranged along its circumference, and a tooth groove is formed between two adjacent teeth; the outer ring is sleeved on the outer circumference of the first segment; one end of the pawl is rotatably connected to the outer ring, and the other end is inserted into one of the tooth grooves;

[0017] One of the inner ring and the outer ring is connected to the first power unit, and the other is connected to the rotating disk.

[0018] Optionally, the sampler further includes a control unit, which is disposed in the inner cavity and is communicatively connected with the first driving mechanism and the second driving mechanism, and is configured to control the operation of the first driving mechanism and the second driving mechanism according to preset parameters.

[0019] Optionally, the sampler further comprises an input portion, which is arranged on the wall of the base and is communicatively connected with the control unit; the input portion is used to input the preset parameters and transmit the preset parameters to the control unit; and / or,

[0020] The sampler further comprises a display unit, which is arranged on the wall of the base; the display unit is communicatively connected with the control unit and is used for displaying target parameters.

[0021] To achieve the above object, the utility model also provides a detection system, comprising a frame, a detector and the sampler as described above, wherein the detector and the sampler are both arranged on the frame; the detector further comprises a sampling head, which is located on a side of the turntable away from the base and corresponds to the preset position;

[0022] The detection system is configured to drive the slider located at the preset position to move in the axial direction of the turntable so that the sampling head engages with or separates from the corresponding sample container.

[0023] Compared with the prior art, the sampler and detection system of the utility model has the following advantages:

[0024] The aforementioned sampler comprises a base, a loading mechanism, a first driving mechanism and a second driving mechanism, the base being a hollow structure with an inner cavity; the loading mechanism is arranged on one side of the base and comprises a turntable and a plurality of sliders; the axial direction of the turntable extends along the arrangement direction of the turntable and the base; a plurality of guide mechanisms are arranged at equal intervals along its circumference on the outer side surface of the turntable, each of the guide mechanisms extending along the axial direction of the turntable; each of the sliders is arranged at one of the guide mechanisms and can make reciprocating linear motion along the axial direction of the turntable along the guide mechanism, and the slider is also used to be detachably connected to the sample container; a part of the first driving mechanism is arranged in the inner cavity, and the other part passes through the wall of the base and is connected to the turntable; the first driving mechanism is used to drive The turntable is rotated around its own axis to selectively locate one of the sliders at a preset position; the second driving mechanism is arranged on the base and is used to drive the slider at the preset position to move along the axial direction of the turntable; the sampler is used in a detection system, the detection system also includes a rack and a detector, the detector and the sampler are both arranged on the rack, and the detector also includes a sampling head, the sampling head is located on one side of the base and corresponds to the preset position; in this way, when the detection system is working, the turntable is driven to rotate by the first driving mechanism to realize the switching of the sample container, and the slider at the preset position is driven to move by the second driving mechanism to realize the engagement or separation of the sampling head with the sample container at the preset position. It has the advantages of convenient use and quick sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to better understand the present invention and do not constitute an improper limitation on the present invention.

[0026] Figure 1 It is a structural schematic diagram of a sampler provided by the utility model according to an embodiment;

[0027] Figure 2 is a schematic diagram of the structure of a sampler provided by the utility model according to an embodiment, Figure 2 and Figure 1 The observation direction is different;

[0028] Figure 3 yes Figure 2 A partial enlarged schematic diagram of the sampler shown;

[0029] Figure 4 is a cross-sectional view of a sampler provided by the utility model according to an embodiment;

[0030] Figure 5is a schematic diagram of a usage scenario of a sampler provided by the utility model according to an embodiment, in which a sampling head of a detector is engaged with a sample container located at a preset position;

[0031] Figure 6 is a schematic diagram of a usage scenario of a sampler provided by the utility model according to an embodiment, in which the sampling head of the detector is separated from the sample container located at a preset position;

[0032] Figure 7 It is a partial structural schematic diagram of a sampler provided by the utility model according to an embodiment, and the figure mainly shows a first driving mechanism;

[0033] Figure 8 It is a partial structural schematic diagram of a sampler provided by the utility model according to an embodiment, and the ratchet assembly is shown in the figure;

[0034] Fig. 9 yes Figure 8 A partial cross-sectional view of the sampler shown, mainly showing the ratchet assembly;

[0035] Fig.10 1 is a partial structural schematic diagram of a sampler provided by the utility model according to an embodiment, and shows a partial structure of a second driving mechanism.

[0036] [Description of reference numerals is as follows]:

[0037] 100-base, 101-inner cavity, 210-turntable, 211-guide mechanism, 220-slider, 230-clamping mechanism, 300-first driving mechanism, 310-first power unit, 320-ratchet assembly, 321-inner ring, 3211-first segment, 3212-second segment, 322-outer ring, 323-pawl, 410-second power unit, 420-bearing part, 430-magnetic assembly, 431-first magnetic part, 432-second magnetic part, 433-third magnetic part, 500-input part, 600-display unit, 700-station number disk, 10-sample container, 20-sampling head. DETAILED DESCRIPTION

[0038] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner, so the diagram only shows the components related to the present invention rather than drawing according to the number, shape and size of the components in the actual implementation. The type, quantity and proportion of each component in the actual implementation can be a random change, and the component layout type may also be more complicated.

[0039] In addition, each embodiment of the following description has one or more technical features, but this does not mean that the user of the present invention must implement all the technical features in any embodiment at the same time, or can only implement part or all of the technical features in different embodiments separately. In other words, under the premise of being possible to implement, those skilled in the art can selectively implement part or all of the technical features in any embodiment according to the disclosure of the present invention and according to the design specifications or implementation requirements, or selectively implement a combination of part or all of the technical features in multiple embodiments, thereby increasing the flexibility of the implementation of the present invention.

[0040] As used in this specification, the singular forms "one", "an", and "the" include plural objects, and the plural form "a plurality" includes more than two objects, unless the content clearly indicates otherwise. As used in this specification, the term "or" is generally used in a sense that includes "and / or", unless the content clearly indicates otherwise, and the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, and it can be a connection between two elements or an interactive relationship between two elements. Relational terms such as the terms "first", "second", etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor do they indicate or imply relative importance or implicitly indicate the number of technical features indicated. It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In order to make the purpose, advantages and features of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model. The same or similar reference numerals in the drawings represent the same or similar components.

[0042] Figure 1 and Figure 2 A schematic diagram showing the structure of a sampler provided by an embodiment of the utility model is shown. Figure 3 is a partial enlarged schematic diagram of the sampler, Figure 4 is a cross-sectional view of the sampler. Figures 1 to 4, the sampler includes a base 100, a loading mechanism (not marked in the figure), a first driving mechanism 300 and a second driving mechanism (not marked in the figure). The base 100 is a hollow structure with an inner cavity 101. The loading mechanism is arranged on one side of the base 100, and includes a turntable 210 and a plurality of sliders 220. The axial direction of the turntable 210 extends along the arrangement direction of the turntable 210 and the base 100. A plurality of guide mechanisms 211 are arranged on the outer surface of the turntable 210 at equal intervals along the circumference of the turntable 210, and each of the guide mechanisms 211 extends along the axial direction of the turntable 210. Each of the sliders 220 is arranged at one of the guide mechanisms 211, and each of the sliders 220 can perform reciprocating linear motion in the axial direction of the turntable 210 along the corresponding guide mechanism 211. The slider 220 is also used to be detachably connected to the sample container 10. A portion of the first driving mechanism 300 is disposed in the inner cavity 101, and another portion passes through the wall of the base 100 and is connected to the turntable 210. The first driving mechanism 300 is used to drive the turntable to rotate around its own axis to selectively locate one of the sliders 220 at a preset position. The second driving mechanism is disposed on the base and is used to drive the slider 220 located at the preset position to move along the axis of the turntable 210.

[0043] The sampler is used in a detection system, which further includes a frame (not shown in the figure) and a detector. The detector and the sampler are both connected to the frame, and the detector includes a sampling head 20. The sampling head 20 is located on a side of the turntable 210 away from the base 100, and the sampling head 20 is arranged corresponding to the preset position. When the detection system is sampling, the sampling process is as follows, including:

[0044] Step S1 : driving the turntable 210 to rotate by the first driving mechanism 300 so that one of the sliders 220 is located at the preset position, and thus the sample container 10 connected to the slider 220 is located at the preset position.

[0045] Step S2: The slider 220 located at the preset position is driven by the second driving mechanism to move in a direction away from the base 100, so that the sample container 10 connected to the slider 220 gradually approaches the sampling head 20 until the sampling head 20 is at least partially inserted into the sample container 10 (e.g., Figure 4 and Figure 5 As shown), to allow the sampling head 20 to collect the sample in the sample container 10.

[0046] Step S3: After the sampling is completed, the slider 220 located at the preset position is driven by the second driving mechanism to move in a direction close to the base 100 until the sample container 10 connected to the slider 220 is separated from the sampling head 20 (eg, Figure 6 shown).

[0047] Afterwards, the first driving mechanism 300 may repeatedly perform steps S1 to S3 to complete the collection of other samples.

[0048] That is, the switching of the sample container 10 can be realized by the operation of the first driving mechanism 300, and the collection of the sample can be realized by the operation of the second driving mechanism. Moreover, the operation parameters of the first driving mechanism 300 and the second driving mechanism can be set according to the number of samples, the sampling time of a single sample, and the angle at which two adjacent sample containers 10 are staggered in the circumferential direction of the turntable 210. In this way, the sampling of multiple samples can be performed fully automatically without the need for manual execution by the operator, which reduces the labor intensity of the operator on the one hand, and reduces the occurrence of sampling errors due to operator errors on the other hand.

[0049] It should be noted that the embodiment of the utility model does not specifically limit the specific type of the detector, which can be any suitable detection device. In an exemplary embodiment, the detector includes a mass spectrometer. In addition, the turntable 210 can be a disk, so that the outer side of the turntable 210 is its outer peripheral surface. Of course, in other embodiments, the turntable can also be an equilateral triangle, a square, or any other suitable regular polygon. The guide mechanism 211 can be a slide groove, a convex ridge, or a slide rail, which is not limited by the embodiment of the utility model. In a non-limiting embodiment, the turntable 210 and the base 100 are arranged in a vertical direction, and the turntable 210 is arranged above the base 100, so that the axial direction of the turntable 210 is a vertical direction, and the sampling head 20 is located above the turntable 210, and the aforementioned "movement in the direction away from the base 100" is upward movement, and "movement in the direction close to the base 100" is downward movement. The "above" mentioned here includes both directly above and diagonally above. Similarly, the "below" mentioned here includes both directly below and diagonally below.

[0050] In addition, the number of the sliders 220 may be less than the number of the guide mechanisms 211, so that the sliders 220 are provided at some of the guide mechanisms 211. Generally, the number of the sliders 220 is equal to the number of the guide mechanisms 211, so that one slider 220 is provided at each guide mechanism 211. The slider 220 may be connected to the sample container 10 in any suitable manner. For example, a clamping mechanism 230 is connected to the slider 220, and the clamping mechanism 230 is used to clamp the sample container 10, so that the slider 220 is indirectly connected to the sample container 10.

[0051] Further, the sampler further includes a control unit (not shown in the figure), which is disposed in the inner cavity 101. The control unit is in communication with the first drive mechanism 300 and the second drive mechanism, and is configured to control the first drive mechanism 300 and the second drive mechanism to work according to the preset parameters. It can be understood that the preset parameters include the operating parameters of the first drive mechanism 300 and the operating parameters of the second drive mechanism.

[0052] Furthermore, if Figure 1 and Figure 2 As shown, the sampler also includes an input unit 500 and a display unit 600. The input unit 500 is arranged on the wall of the base 100, and the input unit 500 is connected to the control unit in communication. During operation, the operator inputs the preset parameters to the input unit through the input unit 500, and transmits the preset parameters to the control unit. The display unit 600 is also arranged on the wall of the base 100, and the display unit 600 is connected to the control unit in communication and is used to display the target parameters. The target parameters include but are not limited to the aforementioned preset parameters (i.e., the operating parameters of the first drive mechanism 300 and the operating parameters of the second drive mechanism), and may also include the number of sampled products, the number of samples to be sampled, the number of sample containers 10 currently sampled, etc. In an optional implementation, the input unit 500 is a mechanical button, and in another optional implementation, the input unit 500 is a virtual button arranged on the display unit 600, and the display unit is generally a liquid crystal display.

[0053] Alternatively, if Figure 7As shown, the first driving mechanism 300 includes a first power unit 310 and an auxiliary mechanism 320. The first power unit 310 is connected to the turntable through the auxiliary mechanism 320. Under the action of the auxiliary mechanism 320, the turntable 210 is allowed to rotate in a preset direction under the drive of the first driving mechanism 300, and the turntable 210 is also allowed to rotate in the preset direction under the action of an external force. The reason for this arrangement is that the space at the preset position is small. If the sample container 10 is installed at the preset position, it is difficult to operate and difficult to install. Therefore, when the number of samples to be tested is equal to the number of the sliders 220 on the turntable 210, the turntable 210 can be driven by an external force to rotate in a preset direction, so that each slider 220 is staggered from the preset position, so that the sample container 10 will not be installed at the preset position.

[0054] Optionally, the first power unit 310 includes a motor, and preferably the motor is a stepping motor.

[0055] And, preferably, the auxiliary mechanism 320 includes a ratchet assembly. Figure 8 and Fig. 9 As shown, the ratchet assembly includes an inner ring 321, an outer ring 322 and a pawl 323. The inner ring 321 includes a first segment 3211 and a second segment 3212 connected coaxially. The outer circumference of the first segment 3211 is smooth, and the outer circumference of the second segment 3212 is provided with a plurality of teeth, which are arranged in sequence along the circumference of the second segment 3212, and a tooth groove is formed between two teeth. The outer ring 322 is sleeved on the outer circumference of the first segment 3211. One end of the pawl 323 is connected to the outer ring 322, and the other end is inserted into a tooth groove of the second segment 3212. One of the inner ring 321 and the outer ring 322 is connected to the first power unit 310, and the other is connected to the turntable 210. The external force mentioned in this article refers to the force from outside the sampler's own components. In practice, the external force is provided by the operator, that is, the operator can manually drive the turntable 210 to rotate along the preset direction.

[0056] by Figure 8Taking the orientation shown as an example, if the inner ring 321 is connected to the first power unit 310, specifically, the inner ring 321 is coaxially connected to the output shaft of the motor, and the outer ring 322 is connected to the turntable 210, when the first power unit 310 provides a driving force in the counterclockwise direction to the inner ring 321, the inner ring 321 drives the outer ring 322 to rotate in the counterclockwise direction through the ratchet 323, thereby driving the turntable 210 to rotate in the counterclockwise direction. When the operator applies an external force in the counterclockwise direction to the outer ring 322, the outer ring 322 drives the outer ring 322 to rotate in the counterclockwise direction. If the inner ring 321 is connected to the turntable 210, and the outer ring 322 is connected to the first power unit 310, specifically, the outer ring 322 is coaxially connected to the output shaft of the motor, then when the first power unit 310 provides a driving force in the clockwise direction to the outer ring 322, the outer ring 322 drives the inner ring 321 to rotate in the clockwise direction through the ratchet 323, thereby driving the turntable 210 to rotate in the clockwise direction. When the operator applies an external force in the clockwise direction to the turntable 210, the turntable 210 drives the inner ring 321 to rotate in the clockwise direction.

[0057] Optionally, the rotating disk 210 is provided with a mark at a position corresponding to each of the guide mechanisms 211, and the mark is used to identify the sample container 10 on the slider 220 connected to the corresponding guide mechanism 211. The mark is usually a number.

[0058] Or, if Figure 1 and Figure 4 As shown, the sampler further includes a station number disk 700, which is coaxially connected to the turntable 210 and is located on the side of the turntable 210 away from the base 100. The station number disk 700 is provided with a plurality of marks, which are arranged at intervals along the circumference of the station number disk, and each mark is used to align with one of the guide mechanisms 211, so as to be used to identify the sample container 10 on the slider 220 connected to the corresponding guide mechanism 211. Optionally, the station number disk 210 is connected to the turntable 210 through a locking portion (not marked in the figure), and the locking portion is used to lock the station number disk 700 and the turntable 210, or to unlock the station number disk 700 and the turntable 210. When the locking portion locks the work station number disk 700 and the turntable 210, the work station number disk 700 and the turntable 210 remain relatively still. When the locking portion releases the lock of the work station number disk 700 and the turntable 210, the work station number disk 700 can rotate relative to the turntable 210 to change the guide mechanism 211 corresponding to the mark thereon.

[0059] Please refer to Fig.10 and Figure 5 , Figure 6 , the second driving mechanism includes a second power unit 410, a bearing unit 420 and a magnetic assembly 430. The second power unit 410 is at least partially disposed in the inner cavity 101, the bearing unit 420 is located on the side of the base 100 facing the turntable 210, and the second power unit 410 is connected to the bearing unit 420. In the case where the turntable 210 is disposed above the base 100, the magnetic assembly 430 may include a first magnetic member 431 and a second magnetic member 432, the first magnetic member 431 is disposed at one end of the slider 220 facing the base 100, the second magnetic member 432 is disposed at one end of the bearing unit 420 facing the turntable 210, and the magnetic pole of the second magnetic member 432 facing the turntable 210 is the same as the magnetic pole of the first magnetic member 431 facing the base 100. When the second power part 410 drives the bearing part 420 to move, the bearing part 420 drives the second magnetic member 432 to arrive at the preset position, and cooperates with the first magnetic member 431 on the slider 220 located at the preset position to generate a repulsive force, thereby pushing the corresponding slider 220 to move in a direction away from the base 100. When the bearing part 420 drives the second magnetic member 432 to move away from the preset position, the repulsive force disappears, and the slider 220 located at the preset position can move in a direction close to the base 100 under the action of gravity.

[0060] Furthermore, the magnetic assembly 430 further includes a third magnetic member 433, which is disposed at one end of the bearing portion 420 facing the turntable 210 and is spaced apart from the second magnetic member 432. The magnetic pole of the third magnetic member 433 facing the turntable 210 is different from the magnetic pole of the second magnetic member 433 facing the turntable 210, that is, the magnetic pole of the third magnetic member 433 facing the turntable 210 is the same as the magnetic pole of the first magnetic member 431 facing the base 100. Through the movement of the bearing part 420, the third magnetic part 433 and the second magnetic part 432 are selectively located at the preset position, and when the third magnetic part 433 is located at the preset position, the third magnetic part 433 cooperates with the first magnetic part 431 on the slider 220 located at the preset position to generate suction and pull the slider 220 to move in a direction close to the base 100, so as to avoid the presence of particles or other interferences in the guide mechanism 211 causing the slider 220 to get stuck when moving downward under the action of gravity.

[0061] For example, when the magnetic pole of the first magnetic component 431 facing the base 100 is the N pole, the magnetic pole of the second magnetic component 432 facing the turntable 210 is the N pole, and the magnetic pole of the third magnetic component 433 facing the turntable 210 is the S pole, if the bearing part 420 moves under the drive of the second power part 410 until the second magnetic component 432 is located at the preset position, the second magnetic component 432 cooperates with the first magnetic component 431 on the slider 220 located at the preset position to generate a repulsive force, thereby pushing the slider 220 to move in a direction away from the base 100; if the bearing part 420 moves under the drive of the second power part 410 until the third magnetic component 433 is located at the preset position, the third magnetic component 433 cooperates with the first magnetic component 431 on the slider 220 located at the preset position to generate an attractive force, thereby pulling the slider 220 to move in a direction close to the base 100.

[0062] In other words, the second driving mechanism is a magnetic push-pull mechanism. The advantage of this arrangement is that after completing the sampling of a sample, as long as the sampling head 20 is separated from the corresponding sample container 10, the first driving mechanism 300 can be controlled to drive the turntable 210 to rotate to switch the sample container, thereby shortening the sampling time of multiple samples and improving the detection efficiency. It can be understood that the second driving mechanism including both the second magnetic member and the third magnetic member is also applicable to the situation where the turntable is located below or on the side of the base (not shown in the figure).

[0063] In an alternative implementation, the second driving mechanism may also be a mechanical push-pull mechanism, such as a pneumatic cylinder or an electric cylinder, so that the slider located at the preset position is pushed to move in a direction away from the base by the extension of the second driving mechanism, so that the corresponding sample container engages with the sampling head, and the slider is moved in a direction close to the base 100 by the retraction of the second driving mechanism (not shown in the figure). However, in such an implementation, after completing the collection of a sample, the second driving mechanism must be retracted until it does not overlap with the rotating disk in the axial direction of the rotating disk, and then the first driving mechanism can be controlled to drive the rotating disk to rotate, otherwise, the rotation of the rotating disk 210 will interfere with the second driving mechanism.

[0064] Optionally, the bearing portion 420 is used to rotate around a preset axis under the drive of the second driving portion 410, and the second magnetic member 432 and the third magnetic member 433 are arranged at intervals around the preset axis. The preset axis extends along the axial direction of the turntable 210. In other words, the second magnetic member 432 and the third magnetic member 433 are selectively located at the preset position by the rotation of the bearing portion 420. In this case, the second power unit 410 may include an electric servo, and the bearing portion 420 is connected to the output shaft of the electric servo.

[0065] Although the utility model is disclosed as above, it is not limited thereto. Those skilled in the art may make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A sampler, characterized in that: include: The base is a hollow structure with an inner cavity; A loading mechanism is arranged on one side of the base and includes a turntable and a plurality of sliders, wherein the axial direction of the turntable extends along the arrangement direction of the turntable and the base; a plurality of guide mechanisms are arranged at equal intervals along the circumference thereof on the outer side of the turntable, and each of the guide mechanisms extends along the axial direction of the turntable; each of the sliders is arranged at one of the guide mechanisms and can perform reciprocating linear motion along the guide mechanism in the axial direction of the turntable, and the slider is also used to be detachably connected to the sample container; A first driving mechanism, a part of which is disposed in the inner cavity and another part of which passes through the wall of the base and is connected to the turntable; the first driving mechanism is used to drive the turntable to rotate around its own axis to selectively locate one of the sliders at a preset position; as well as, The second driving mechanism is arranged on the base and is used for driving the slider located at the preset position to move along the axial direction of the rotating disk.

2. The sampler according to claim 1, characterized in that: The second driving mechanism comprises a second power part, a bearing part and a magnetic assembly, wherein the second power part is at least partially located in the inner cavity, the bearing part is located on the side of the base facing the turntable, and the bearing part is connected to the second power part; the magnetic assembly comprises at least a first magnetic member and a second magnetic member, wherein the first magnetic member is arranged at one end of the slider facing the base, the second magnetic member is arranged at one end of the bearing part facing the turntable, and the magnetic pole of the second magnetic member facing the turntable is the same as the magnetic pole of the first magnetic member facing the base; The second driving mechanism is configured to drive the bearing part to move through the second power part, so that the second magnetic part is located at the preset position or deviates from the preset position.

3. The sampler according to claim 2, characterized in that: The magnetic assembly further includes a third magnetic member, the third magnetic member is disposed at one end of the bearing portion facing the turntable, and the third magnetic member is spaced apart from the second magnetic member; the magnetic pole of the end of the third magnetic member facing the turntable is different from the magnetic pole of the end of the second magnetic member facing the turntable; The second driving mechanism is configured to selectively locate the second magnetic member or the third magnetic member at the preset position through the movement of the bearing portion.

4. The sampler according to claim 2 or 3, characterized in that: The bearing portion is configured to rotate around a preset axis under the driving of the second power portion, and the preset axis extends along the axial direction of the turntable.

5. The sampler according to claim 4, characterized in that: The second power unit includes an electric steering gear, an output shaft of which is connected to the bearing unit; and / or the first driving mechanism includes a stepping motor.

6. The sampler according to claim 1, characterized in that: The first driving mechanism includes a first power unit and an auxiliary mechanism, wherein the auxiliary mechanism connects the first power unit and the turntable to allow the turntable to rotate in a preset direction under the driving of the first driving mechanism or an external force.

7. The sampler according to claim 6, characterized in that: The auxiliary mechanism comprises a ratchet assembly; the ratchet assembly comprises an inner ring, an outer ring and a pawl, the inner ring comprises a first segment and a second segment which are coaxially connected, the outer circumference of the first segment is smooth, the outer circumference of the second segment is provided with a plurality of teeth arranged along its circumference, and a tooth groove is formed between two adjacent teeth; the outer ring is sleeved on the outer circumference of the first segment; one end of the pawl is rotatably connected to the outer ring, and the other end is inserted into one of the tooth grooves; One of the inner ring and the outer ring is connected to the first power unit, and the other is connected to the rotating disk.

8. The sampler according to claim 1, characterized in that: The sampler also includes a control unit, which is disposed in the inner cavity and is communicatively connected with the first driving mechanism and the second driving mechanism, and is configured to control the operation of the first driving mechanism and the second driving mechanism according to preset parameters.

9. The sampler according to claim 8, characterized in that The sampler further comprises an input portion, which is arranged on the wall of the base and is in communication connection with the control unit; the input portion is used to input the preset parameters and transmit the preset parameters to the control unit; and / or, The sampler further comprises a display unit, which is arranged on the wall of the base; the display unit is communicatively connected with the control unit and is used for displaying target parameters.

10. A detection system, characterized in that: The device comprises a frame, a detector and a sampler as claimed in any one of claims 1 to 9, wherein the detector and the sampler are both arranged on the frame; the detector further comprises a sampling head, which is located on a side of the turntable away from the base and corresponds to the preset position; The detection system is configured to drive the slider located at the preset position to move in the axial direction of the turntable so that the sampling head engages with or separates from the corresponding sample container.

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