A small-volume, high-throughput sample holder

Abstract

This invention provides a small-volume, high-throughput sample holder, including a fixed base and multiple stacking cylinders mounted on the fixed base. Each stacking cylinder is a cylindrical structure open at both ends. The fixed base includes a horizontally arranged base plate, a top plate, and vertical partitions. Multiple vertical partitions are evenly and parallelly arranged, forming a sample outlet channel between adjacent vertical partitions and the base and top plates. The top plate has a circular mounting hole connecting to the sample outlet channel. The stacking cylinders are mounted on the circular mounting holes. A first telescopic component is mounted on one side of the top plate near the circular mounting hole. Each first telescopic component is connected to a horizontal baffle. The first telescopic component drives the horizontal baffles to extend or retract into the circular mounting hole. This prevents sample boxes from scattering when stacked in the stacking cylinders, and the sample boxes can be pushed out from the bottom sample outlet channel for testing.

Description

Technical Field

[0001] This utility model relates to the field of energy spectrum detection device technology, and in particular to a small-volume, high-throughput sample holder suitable for energy spectrum detection devices. Background Technology

[0002] Energy dispersive X-ray spectroscopy (EDS) devices (such as high-purity germanium spectrometers and gamma spectrometers) can detect the types and activities of radioactive nuclides in substances such as soil, food, water, air aerosols, and cosmetics. They are primarily used in important fields such as ecological environment monitoring, nuclear resource exploration, nuclear power, nuclear emergency response, nuclear security, military defense, theoretical physics research, disease control and prevention centers, and customs inspection and quarantine. EDS devices mainly consist of a sample rack, sampling mechanism, lead chamber, detector, cooling mechanism, digital multichannel analyzer, and supporting software and computer. Existing EDS devices typically have sample boxes laid flat on a sample rack, resulting in a small sample throughput (e.g., 10-50 samples). Increasing the sample throughput (100-200 samples) significantly increases the instrument's size; for example, the applicant's currently marketed large-scale high-purity germanium EDS device increases the sample throughput to 220 samples, with a device size reaching 2.5m*. 1.35m *2.1m, it occupies a large experimental space and is inconvenient to transport. It needs to be disassembled and transported in separate boxes, and then reassembled and debugged on the customer's site. The after-sales installation cost is also very high. Summary of the Invention

[0003] To address the aforementioned shortcomings in the existing technology, this utility model provides a small-volume, high-throughput sample rack that stacks sample boxes inside a stacking cylinder to prevent them from scattering. The sample boxes can also be pushed out from the bottom sample outlet channel for testing.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0005] A small-volume, high-throughput sample rack is used to store sample boxes. The sample boxes are cylindrical structures. The sample rack includes a fixed base and multiple stacking cylinders installed on the fixed base. The stacking cylinders are cylindrical structures with open ends.

[0006] The fixed base includes a horizontally arranged base plate, a top plate, and vertical partitions connecting the base plate and the top plate. Multiple vertical partitions are evenly and parallelly arranged. Adjacent vertical partitions form a sample outlet channel with the base plate and the top plate. The top plate is provided with a circular mounting hole that connects to the sample outlet channel. The stacking cylinder is installed on the circular mounting hole. A first telescopic component is installed on one side of the top plate located at the circular mounting hole. A horizontal baffle is connected to each of the first telescopic components. The first telescopic components drive the horizontal baffles to extend and retract, so that the horizontal baffles extend into the circular mounting hole or retract out of the circular mounting hole.

[0007] The height of the sample outlet channel is the same as the height of the sample box, and the width of the sample outlet channel matches the diameter of the sample box.

[0008] The stacking cylinder has a split structure, including a detachably connected upper cylinder and a lower cylinder, with the lower cylinder fixed to the top plate and located above the circular mounting hole.

[0009] An installation block is fixed on the outer wall of the upper cylinder, and an arc-shaped groove is provided on the inner wall of the lower cylinder along the circumference. One end of the arc-shaped groove is provided with an installation port that communicates with the upper surface of the lower cylinder. The installation block is installed in the arc-shaped groove from the installation port and the installation block is rotated so that the installation block is installed at the end of the arc-shaped groove away from the installation port.

[0010] Each arc-shaped groove has a ball at its bottom at the end furthest from the mounting opening, and a corresponding groove is provided on the mounting block. When the mounting block is installed at the end of the arc-shaped groove furthest from the mounting opening, the groove and the ball cooperate to ensure that the mounting block is installed in place.

[0011] There are two mounting blocks, which are different in size, and there are two corresponding arc-shaped grooves and mounting openings.

[0012] The first telescopic assembly includes an electric or pneumatic telescopic rod, a first slide rail, and a first slider. A telescopic rod mounting hole is provided on one side of the circular mounting hole on the top plate. The fixed end of the electric or pneumatic telescopic rod is fixed to the top plate, so that the telescopic end of the electric or pneumatic telescopic rod is located in the telescopic rod mounting hole and faces the circular mounting hole. The first slide rail is located at the telescopic rod mounting hole and fixed to the bottom of the top plate. The first slider is slidably mounted on the first slide rail. A horizontal baffle is fixedly connected to the first slider and the telescopic end of the electric or pneumatic telescopic rod. When the electric or pneumatic telescopic rod extends or retracts, it drives the horizontal baffle and the first slider to move on the first slide rail, thereby allowing the horizontal baffle to enter and exit the circular mounting hole.

[0013] A conveyor belt is installed at one end of the sample outlet channel, with the installation direction of the conveyor belt perpendicular to the sample outlet direction of the sample outlet channel, and one end opening of all sample outlet channels leads to the conveyor belt; a reciprocating moving assembly is installed below the other end of the sample outlet channel, with the installation direction of the reciprocating moving assembly perpendicular to the sample outlet direction of the sample outlet channel, and a second telescopic assembly is installed on the reciprocating moving assembly. The second telescopic assembly moves along the reciprocating moving assembly, causing the second telescopic assembly to move below all sample outlet channels. A push rod telescopic port is provided on the base plate within the sample outlet channel, with one end of all push rod telescopic ports extending to the end of the sample outlet channel near the conveyor belt, and the other ends of all push rod telescopic ports being connected to form a push rod moving port. A push rod is installed on the second telescopic assembly, and the push rod extends into the push rod moving port and moves with the second telescopic assembly within the reciprocating moving assembly. At the same time, the push rod moves along the second telescopic assembly within the sample outlet channel along the push rod telescopic port, pushing the sample box that has fallen into the sample outlet channel from the sample outlet channel onto the conveyor belt.

[0014] The reciprocating moving component is a sprocket or pulley driven reciprocating moving structure; the second telescopic component is a lead screw driven reciprocating motion structure; the front end of the push rod is fixed with an arc-shaped or V-shaped push block, the arc-shaped or V-shaped push block faces the sample outlet channel, and when the push rod pushes the sample box, the arc-shaped or V-shaped push block matches and abuts against the sample box.

[0015] Two sets of fixed seats are symmetrically arranged, and two sets of stacking cylinders, first telescopic components, horizontal baffles, reciprocating moving components, second telescopic components, and push rods are also arranged. The conveyor belt is located between the two sets of fixed seats, so that the sample boxes in the stacking cylinders installed on the two sets of fixed seats can be pushed onto the conveyor belt by the push rods.

[0016] A positioning mechanism is installed at the rear end of the conveyor belt. The positioning mechanism includes a baffle and a V-shaped positioning plate. The baffle is fixed across the conveyor belt and its height is lower than that of the sample box. The V-shaped positioning plate is installed above the baffle and its V-shaped opening faces the front end of the conveyor belt. When the sample box stops at the baffle, the sample box is just abutted against the two side plates of the V-shaped positioning plate, thereby positioning the sample box that stops at the baffle.

[0017] Compared with the prior art, the beneficial effects of this utility model are: (1) The small volume high throughput sample rack provided by this utility model stacks sample boxes in the stacking tube, which increases the sample throughput without increasing the sample rack area. It can prevent the stacked sample boxes from falling apart, and the sample boxes can enter the sample outlet channel from the bottom, so that the sample boxes placed at the bottom of the stacking tube can be detected first. At the same time, the setting of the first telescopic component and the horizontal baffle can ensure that the sample boxes will not fall from the bottom during the loading process.

[0018] (2) In this utility model, a conveyor belt, push rod and other components are set at the sample outlet channel, which can realize the transfer of the sample box from the sample outlet channel to the area close to the testing mechanism, so that the sampling mechanism can transfer the sample box to the testing mechanism for testing. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of the small-volume, high-throughput sample rack provided by this utility model;

[0020] Figure 2 A top view of the small-volume, high-throughput sample holder provided by this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the fixing base in this utility model;

[0022] Figure 4 This is a top view of the connection between the fixed base, the first telescopic component, and the horizontal baffle in this utility model;

[0023] Figure 5This is a partial structural diagram of the upper cylinder of the stacking cylinder in this utility model;

[0024] Figure 6 This is a schematic diagram of the lower cylinder of the stacking cylinder in this utility model;

[0025] Figure 7 This is a cross-sectional view of the installation of the first telescopic component and the horizontal baffle in this utility model;

[0026] Figure 8 This is a schematic diagram of the horizontal baffle retracting and exiting the circular mounting hole in this utility model;

[0027] Figure 9 This is a schematic diagram of a horizontal baffle extending into a circular mounting hole in a utility model.

[0028] Figure 10 This is a schematic diagram showing the arrangement of the push rod telescopic port and the push rod moving port on the bottom plate of the utility model.

[0029] Figure 11 This is a schematic diagram showing the connection between the reciprocating moving component, the second telescopic component, and the push rod in the utility model.

[0030] Figure 12 This is a schematic diagram of the sample box being pushed out of the sample outlet channel in the utility model.

[0031] Figure 13 This is a schematic diagram of a sample box being pushed onto a conveyor belt in a utility model.

[0032] In the diagram, 1-sample box, 2-stacking cylinder, 21-upper cylinder, 211-mounting block, 22-lower cylinder, 221-arc groove, 222-mounting port, 223-bend, 3-fixed seat, 31-base plate, 311-push rod telescopic port, 312-push rod moving port, 32-top plate, 33-vertical partition, 4-first telescopic assembly, 41-electric or pneumatic telescopic rod, 42-first slide rail, 43-first slider, 5-horizontal baffle, 6-conveyor belt, 71-towards 711-Mounting bracket, 712-Reciprocating drive motor, 713-Driving wheel, 714-Driven wheel, 715-Chain or timing belt, 716-Moving block, 717-Guide rail, 718-Guide block, 72-Second telescopic assembly, 721-Telescopic drive motor, 722-Screw, 723-Second slide rail, 724-Second slider, 8-Push rod, 81-Arc or V-shaped push block, 9-Positioning mechanism, 91-Baffle, 92-V-shaped positioning plate. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] The structure of the small-volume, high-throughput sample holder provided in this embodiment is as follows: Figure 1and Figure 2 As shown, it includes a fixed base 3 and multiple stacking cylinders 2 installed on the fixed base. The sample boxes 1 are stacked in the stacking cylinders, thereby realizing the placement of high-throughput sample boxes on a small-volume sample rack. The sample boxes of the energy dispersive spectroscopy detection device are usually cylindrical structures. Therefore, in this embodiment, the sample boxes are all set to cylindrical structures, and the stacking cylinders are cylindrical structures.

[0035] In this embodiment, the stacking cylinder is a cylindrical structure open at both ends. The fixing base includes a horizontally arranged base plate 31, a top plate 32, and vertical partitions 33 connecting the base plate and the top plate. Multiple vertical partitions are evenly and parallelly arranged, and adjacent vertical partitions form a sample outlet channel with the base plate and the top plate. A circular mounting hole communicating with the sample outlet channel is provided on the top plate. The stacking cylinder is installed in the circular mounting hole. Figure 3 As shown. A first telescopic assembly 4 is installed on one side of the circular mounting hole on the top plate. A horizontal baffle 5 is connected to each first telescopic assembly. The first telescopic assembly drives the horizontal baffle to extend or retract into the circular mounting hole. Specifically, the height of the sample outlet channel (the distance between the bottom plate and the top plate) is consistent with the height of the sample box, and the width of the sample outlet channel (the distance between two adjacent vertical partitions) matches the diameter of the sample box, ensuring that the sample box can be pushed out from the sample outlet channel. When storing the sample box, the first telescopic assembly drives the horizontal baffle to extend into the circular mounting hole, as shown. Figure 4 As shown, to prevent stacked sample boxes from falling, when a sample box is being tested, the first telescopic component retracts the horizontal baffle out of the circular mounting hole, allowing the sample box at the bottom of the stacking cylinder to fall into the sample outlet channel. Stacking sample boxes inside the stacking cylinder prevents them from scattering, and the telescopic horizontal baffle and sample outlet channel ensure that the sample boxes can fall from the bottom of the stacking cylinder into the sample outlet channel and be retrieved, and that the sample boxes will not fall from the bottom during loading, achieving a high throughput and small volume for the sample rack.

[0036] In this embodiment, the stacking cylinder has a split structure, including a detachably connected upper cylinder 21 and a lower cylinder 22. The lower cylinder is fixed to the top plate and located above the circular mounting hole. When stacking sample boxes, the upper cylinder can be removed first, and then reinstalled after the sample boxes are stacked. A mounting block 211 is fixed to the outer wall of the upper cylinder, such as... Figure 5 As shown, an arc-shaped groove 221 is provided circumferentially on the inner wall of the lower cylinder, and one end of the arc-shaped groove is provided with an installation port 222 communicating with the upper surface of the lower cylinder, as shown. Figure 6As shown, the mounting block is installed into the arc-shaped groove from the mounting opening and rotated until it is installed at the end of the arc-shaped groove away from the mounting opening. Specifically, each end of the arc-shaped groove away from the mounting opening has a catch bead 223 at its bottom, and the mounting block has a corresponding groove. When the mounting block is installed at the end of the arc-shaped groove away from the mounting opening, the groove and the catch bead engage to ensure that the mounting block is installed in place and does not retract. Furthermore, there are two mounting blocks, and two corresponding arc-shaped grooves and mounting openings, to ensure the installation stability of the upper and lower cylinders.

[0037] In this embodiment, the first telescopic component includes an electric or pneumatic telescopic rod 41, a first slide rail 42, and a first slider 43, such as Figure 7 As shown, a telescopic rod mounting hole is provided on one side of the circular mounting hole on the top plate. The fixed end of the electric or pneumatic telescopic rod is fixed to the top plate, so that the telescopic end of the electric or pneumatic telescopic rod is located in the telescopic rod mounting hole and faces the circular mounting hole. The first slide rail is located at the telescopic rod mounting hole and fixed to the bottom of the top plate. The first slider is slidably mounted on the first slide rail. The horizontal baffle is fixedly connected to the first slider and the telescopic end of the electric or pneumatic telescopic rod. When the electric or pneumatic telescopic rod extends or retracts, it drives the horizontal baffle and the first slider to move on the first slide rail, thereby allowing the horizontal baffle to enter and exit the circular mounting hole. Figure 8 and Figure 9 As shown.

[0038] In this embodiment, a conveyor belt 6 is installed at one end of the sample outlet channel. The installation direction of the conveyor belt is perpendicular to the sample outlet direction of the sample outlet channel, and one end of all sample outlet channels leads to the conveyor belt. Figure 2 A reciprocating moving assembly 71 is installed below the other end of the sample outlet channel, see... Figure 1 The reciprocating moving component is installed perpendicular to the sample dispensing direction of the sample dispensing channel. A second telescopic component 72 is installed on the reciprocating moving component. The second telescopic component moves along the reciprocating moving component, causing it to move below all sample dispensing channels. Push rod telescopic ports 311 are provided on the base plate within each sample dispensing channel. One end of each push rod telescopic port extends to the end of the sample dispensing channel near the conveyor belt. The other ends of all push rod telescopic ports are connected to form a push rod moving port 312. (See...) Figure 3 , Figure 7 and Figure 10 The second telescopic assembly is equipped with a push rod 8, such as... Figure 11As shown. The push rod extends above the push rod moving port and moves with the second telescopic component in the reciprocating moving component. Simultaneously, the push rod moves along the second telescopic component within the sample outlet channel along the push rod telescopic port, pushing the sample box that has fallen into the sample outlet channel out of the sample outlet channel onto the conveyor belt. Through the reciprocating moving component, the second telescopic component, and the push rod, each sample box in all stacked cylinders can be pushed onto the conveyor belt, and then transported by the conveyor belt to a specific position, waiting for the sampling mechanism to collect and test the sample. The front end of the push rod is fixed with an arc-shaped or V-shaped push block, which faces the sample outlet channel. When the push rod pushes the sample box, the arc-shaped or V-shaped push block 81 matches and abuts against the sample box, ensuring that the sample box does not shift its position left or right during the process of being pushed out.

[0039] Specifically, the reciprocating motion assembly is a sprocket or pulley driven reciprocating motion structure, including a mounting frame 711, a reciprocating drive motor 712, a driving wheel 713, a driven wheel 714, a chain or synchronous belt 715, a moving block 716, a guide rail 717, and a guide block 718. The driving wheel and driven wheel are mounted below the base plate via the mounting frame. The chain or synchronous belt is horizontally arranged and fitted onto the driving wheel and driven wheel. The moving block is fixed to the chain or synchronous belt. The reciprocating drive motor is connected to the driving wheel and drives the driving wheel to rotate forward or backward, causing the moving block on the chain or synchronous belt to reciprocate horizontally. The guide rail is fixed horizontally to the mounting frame, and the guide block is slidably mounted on the guide rail. The moving block and the guide block are connected together. The guide rail ensures the stability of the entire reciprocating motion mechanism. The sprocket or pulley driven reciprocating motion structure is existing conventional technology and will not be described in detail here. The second telescopic component is a screw-driven reciprocating motion structure, including a telescopic drive motor 721, a screw 722, a second slide rail 723, and a second slider 724. The telescopic drive motor is connected to the screw, the second slide rail is fixed to the moving block of the reciprocating motion component, the second slider is slidably mounted on the second slide rail, and a push rod is fixedly connected to the nut of the second slider and the screw. The telescopic drive motor drives the nut on the screw to move along the screw, causing the push rod and the second slider to move together. The screw-driven reciprocating motion structure is also conventional technology in the field and will not be described in detail here.

[0040] In this embodiment, two sets of fixed bases are symmetrically arranged, and two sets of stacking cylinders, first telescopic components, horizontal baffles, reciprocating moving components, second telescopic components, and push rods are correspondingly arranged. Figure 1 and Figure 2 The conveyor belt is located between two sets of fixed seats, so that the sample boxes in the stacking cylinders installed on the two sets of fixed seats can be pushed onto the conveyor belt by push rods.

[0041] A positioning mechanism 9 is installed at the rear end of the conveyor belt. The positioning mechanism includes a baffle 91 and a V-shaped positioning plate 92, see... Figure 2A baffle is fixed across the conveyor belt, with its height lower than that of the sample box. A V-shaped positioning plate is installed above the baffle, with its V-shaped opening facing the front end of the conveyor belt. When the sample box stops at the baffle, it is precisely against the two side plates of the V-shaped positioning plate, thus positioning the sample box at the baffle. In actual setup, the rear end of the conveyor belt can be positioned close to the detection mechanism of the energy dispersive spectroscopy (EDS) device, facilitating the sampling mechanism to place and retrieve the sample box into the detection mechanism for testing.

[0042] When the sample in the sample box needs to be tested, the first telescopic component of the corresponding stacking cylinder drives the horizontal baffle to retract from the circular mounting hole, causing the sample box to fall into the sample outlet channel. Figure 8 As shown, the reciprocating moving component drives the second telescopic component to move to the corresponding sample outlet channel. Simultaneously, the second telescopic component drives the push rod to push the sample box. Before the sample box is completely pushed out from below the circular mounting hole, the first telescopic component can drive the horizontal baffle to extend into the circular mounting hole, blocking the sample boxes stacked above. Figure 12 As shown. The second telescopic component continues to drive the push rod to push the sample box onto the conveyor belt, as... Figure 13 As shown.

Claims

1. A small volume large flux sample rack for storing sample cartridges, the sample cartridges being of a cylindrical structure, characterized in that, The sample rack includes a fixed base and multiple stacking cylinders installed on the fixed base. The stacking cylinders are cylindrical structures with openings at both ends. The fixed base includes a horizontally arranged base plate, a top plate, and vertical partitions connecting the base plate and the top plate. Multiple vertical partitions are evenly and parallelly arranged. Adjacent vertical partitions form a sample outlet channel with the base plate and the top plate. The top plate is provided with a circular mounting hole that connects to the sample outlet channel. The stacking cylinder is installed on the circular mounting hole. A first telescopic component is installed on one side of the top plate located at the circular mounting hole. A horizontal baffle is connected to each of the first telescopic components. The first telescopic components drive the horizontal baffles to extend and retract, so that the horizontal baffles extend into the circular mounting hole or retract out of the circular mounting hole.

2. The small-volume, high-throughput sample holder according to claim 1, characterized in that: The height of the sample outlet channel is the same as the height of the sample box, and the width of the sample outlet channel matches the diameter of the sample box.

3. The small-volume, high-throughput sample holder according to claim 1, characterized in that: The stacking cylinder has a split structure, including a detachably connected upper cylinder and a lower cylinder, with the lower cylinder fixed to the top plate and located above the circular mounting hole.

4. The small-volume, high-throughput sample holder according to claim 3, characterized in that: An installation block is fixed on the outer wall of the upper cylinder, and an arc-shaped groove is provided on the inner wall of the lower cylinder along the circumference. One end of the arc-shaped groove is provided with an installation port that communicates with the upper surface of the lower cylinder. The installation block is installed in the arc-shaped groove from the installation port and the installation block is rotated so that the installation block is installed at the end of the arc-shaped groove away from the installation port.

5. The small-volume, high-throughput sample holder according to claim 4, characterized in that: Each arc-shaped groove has a ball at its bottom at the end furthest from the mounting opening, and a corresponding groove is provided on the mounting block. When the mounting block is installed at the end of the arc-shaped groove furthest from the mounting opening, the groove and the ball cooperate to ensure that the mounting block is installed in place. There are two mounting blocks, and two arc-shaped grooves and two mounting openings are provided respectively.

6. The small-volume, high-throughput sample holder according to claim 1, characterized in that: The first telescopic assembly includes an electric or pneumatic telescopic rod, a first slide rail, and a first slider. A telescopic rod mounting hole is provided on one side of the circular mounting hole on the top plate. The fixed end of the electric or pneumatic telescopic rod is fixed to the top plate, so that the telescopic end of the electric or pneumatic telescopic rod is located in the telescopic rod mounting hole and faces the circular mounting hole. The first slide rail is located at the telescopic rod mounting hole and fixed to the bottom of the top plate. The first slider is slidably mounted on the first slide rail. A horizontal baffle is fixedly connected to the first slider and the telescopic end of the electric or pneumatic telescopic rod. When the electric or pneumatic telescopic rod extends or retracts, it drives the horizontal baffle and the first slider to move on the first slide rail, thereby allowing the horizontal baffle to enter and exit the circular mounting hole.

7. The small footprint, high throughput sample holder of claim 1, wherein: A conveyor belt is installed at one end of the sample outlet channel, with the installation direction of the conveyor belt perpendicular to the sample outlet direction of the sample outlet channel, and one end opening of all sample outlet channels leads to the conveyor belt; a reciprocating moving assembly is installed below the other end of the sample outlet channel, with the installation direction of the reciprocating moving assembly perpendicular to the sample outlet direction of the sample outlet channel, and a second telescopic assembly is installed on the reciprocating moving assembly. The second telescopic assembly moves along the reciprocating moving assembly, causing the second telescopic assembly to move below all sample outlet channels. A push rod telescopic port is provided on the base plate within the sample outlet channel, with one end of all push rod telescopic ports extending to the end of the sample outlet channel near the conveyor belt, and the other ends of all push rod telescopic ports being connected to form a push rod moving port. A push rod is installed on the second telescopic assembly, and the push rod extends into the push rod moving port and moves with the second telescopic assembly within the reciprocating moving assembly. At the same time, the push rod moves along the second telescopic assembly within the sample outlet channel along the push rod telescopic port, pushing the sample box that has fallen into the sample outlet channel from the sample outlet channel onto the conveyor belt.

8. The small-volume, high-throughput sample holder according to claim 7, characterized in that: The reciprocating moving component is a sprocket or pulley driven reciprocating moving structure; the second telescopic component is a lead screw driven reciprocating motion structure; the front end of the push rod is fixed with an arc-shaped or V-shaped push block, the arc-shaped or V-shaped push block faces the sample outlet channel, and when the push rod pushes the sample box, the arc-shaped or V-shaped push block matches and abuts against the sample box.

9. The small-volume, high-throughput sample holder according to claim 7, characterized in that: Two sets of fixed seats are symmetrically arranged, and two sets of stacking cylinders, first telescopic components, horizontal baffles, reciprocating moving components, second telescopic components, and push rods are also arranged. The conveyor belt is located between the two sets of fixed seats, so that the sample boxes in the stacking cylinders installed on the two sets of fixed seats can be pushed onto the conveyor belt by the push rods.

10. The small-volume, high-throughput sample holder according to claim 7, characterized in that: A positioning mechanism is installed at the rear end of the conveyor belt. The positioning mechanism includes a baffle and a V-shaped positioning plate. The baffle is fixed across the conveyor belt and its height is lower than that of the sample box. The V-shaped positioning plate is installed above the baffle and its V-shaped opening faces the front end of the conveyor belt. When the sample box stops at the baffle, the sample box is just abutted against the two side plates of the V-shaped positioning plate, thereby positioning the sample box that stops at the baffle.

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