Sample introduction device for assay and analysis

Abstract

The utility model belongs to the technical field of assay analysis, and particularly relates to a sample introduction device for assay analysis, which comprises a case and a tray assembly, a detection instrument is arranged on the case, and the tray assembly capable of transversely moving is arranged on one side of the case; the tray assembly comprises a rotating disc and a placing plate, a plurality of positioning pipes are uniformly distributed on the rotating disc, connecting plates are arranged on the two sides of the placing plate, strip-shaped grooves are vertically formed in the connecting plates, and the positioning pipes are tightly attached to the inner walls of the upper ends of the strip-shaped grooves; a mandrel is rotatably arranged on the inner wall of the positioning pipe, a stop block is arranged at the tail end of the mandrel, and the stop block can be rotatably contained in the strip-shaped groove or rotate to the upper side of the positioning pipe to limit the connecting plate. By means of the structure, the rotating disc and the containing plate can be rapidly disassembled and assembled, sample feeding operation can be rapidly achieved, the overall structure is simple, operation is convenient and fast, and the efficiency of assay analysis is further improved.

Description

Technical Field

[0001] This utility model belongs to the field of laboratory analysis technology, and in particular relates to a sample injection device for laboratory analysis. Background Technology

[0002] Laboratory analysis uses physical or chemical methods to test the composition and properties of substances. Generally, samples are placed on a sample plate and sent into a corresponding detector for analysis. For example, X-ray fluorescence spectrometry (XRF) is an instrument used for elemental analysis, suitable for rapid, non-destructive testing of solid, liquid, and powder samples.

[0003] When conducting batch sample analysis, staff need to constantly change samples. Traditional testing methods usually involve manual sample injection or output, which is labor-intensive for staff. The inability to quickly change samples wastes time and reduces the efficiency of analysis.

[0004] Existing technologies also include designs for sample introduction devices for laboratory analysis. These typically involve a telescopic drive mechanism that extends a sample plate into the testing instrument for automatic sample delivery. Once the sample plate is inside the instrument, it separates from the telescopic drive mechanism, and subsequent testing can only proceed after the telescopic mechanism has left the instrument. In existing technologies, the telescopic mechanism and sample plate employ complex detachable structures to achieve these functions, further limiting the efficiency of laboratory analysis. Alternatively, fixtures or robotic arms can be used, resulting in higher operating costs. Utility Model Content

[0005] In view of the technical problems existing in the background art, the present invention provides a sample injection device for laboratory analysis.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] A sample injection device for laboratory analysis includes a chassis and a tray assembly. The chassis houses a detection instrument, and a laterally movable tray assembly is located on one side of the chassis. The tray assembly includes a turntable and a placement plate. A plurality of positioning tubes are evenly distributed on the turntable. Connecting plates are located on both sides of the placement plate, and vertically oriented slots are formed on the connecting plates. The positioning tubes are positioned close to the upper inner wall of the slots. A spindle is rotatably mounted on the inner wall of each positioning tube, and a stop is located at the end of the spindle. The stop can be rotatably housed in the slots or rotated to the upper side of the positioning tube to limit the movement of the connecting plates.

[0008] Optionally, the placement plate is evenly distributed with a plurality of placement slots.

[0009] Optionally, one end of the mandrel has a connecting hole and a threaded hole sequentially formed from the outside to the inside. A limit ring is provided on one side of the stop block. A spring is connected to one end of the limit ring. One end of the spring is connected to a sliding ring. The limit ring, spring, and sliding ring are fitted together in the connecting hole. A bolt assembly is connected to the threaded hole. The bolt assembly is used to press the sliding ring to keep the spring in a stretched state and to keep the stop block tightly against the end of the mandrel.

[0010] Optionally, the bolt assembly includes a smooth section and a threaded section, the threaded section being threadedly connected in a threaded hole, and the end of the smooth section being fitted with a sliding ring.

[0011] Optionally, the bolt assembly includes a nut, the smooth rod section passes through the stop block, and an elastic washer is provided on the smooth rod section between the nut and the stop block.

[0012] Optionally, the tray assembly includes a base, a first placement groove is provided on the bottom side of the chassis, a guide rail is provided in the first placement groove, and a slider is provided on the bottom side of the base, the slider being fitted onto the guide rail.

[0013] Optionally, the positioning tube is provided with two tubes, the base is provided with a mounting plate on one side, the turntable is provided with a rotating shaft at its center, the rotating shaft is rotatably mounted on the mounting plate, and the end of the rotating shaft is provided with a first handle.

[0014] Optionally, one end of the mandrel is provided with a insertion groove, and a second handle is provided in the insertion groove.

[0015] Optionally, two second placement slots are provided on the upper side of the first placement slot, and when the two placement plates are rotated to the same horizontal plane, the two placement plates are positioned directly opposite the second placement slots.

[0016] Optionally, the turntable has two first positioning holes, and the mounting plate has a second positioning hole. When the turntable rotates and the first positioning holes and the second positioning holes are aligned, the upper placement plate faces the testing instrument, and the lower placement plate faces the first placement slot.

[0017] This utility model has the following advantages and beneficial effects:

[0018] This invention utilizes a rotatable turntable to adjust the position of different placement plates and facilitate batch sample delivery. A positioning tube positions the placement plates, and a spindle inside the positioning tube allows for adjustment. When the stop block rotates and retracts into the slot, the placement plate can be fitted onto or removed from the positioning tube. When the stop block rotates to the upper side of the positioning tube, the installed placement plate is fixed and limited. This structure allows for quick assembly and disassembly of the turntable and placement plates, facilitating rapid sample delivery. The overall structure is simple, operation is convenient, and it further improves the efficiency of laboratory analysis. Attached Figure Description

[0019] Figure 1 This is one of the structural diagrams of the sample injection device for laboratory analysis in this utility model;

[0020] Figure 2 for Figure 1 The left view;

[0021] Figure 3 This is the second structural diagram of the sample injection device for laboratory analysis in this utility model;

[0022] Figure 4 This is one of the structural diagrams of the tray assembly in this utility model;

[0023] Figure 5 This is the second structural diagram of the tray assembly in this utility model;

[0024] Figure 6 for Figure 4 The left view;

[0025] Figure 7 for Figure 6 A cross-sectional view along the AA direction;

[0026] Figure 8 This is a second structural diagram showing the connection between the central shaft and the positioning tube of this utility model;

[0027] Figure 9 for Figure 8 A magnified view of a portion of point a.

[0028] Reference numerals: 1-Chassis, 11-First placement slot, 12-Second placement slot, 13-Guide rail, 2-Detection instrument, 21-Cover, 3-Base, 31-Slider, 32-Mounting plate, 33-Center hole, 34-Second positioning hole, 4-Turntable, 41-First positioning hole, 42-Rotating shaft, 43-First handle, 5-Positioning tube, 6-Mandrel, 61-Stop block, 611-Limiting ring, 62-Insertion slot, 63-Connecting hole, 64-Threaded hole, 7-Placement plate, 71-Sample slot, 72-Connecting plate, 73-Strip groove, 8-Nut, 81-Smooth rod section, 82-Threaded rod section, 83-Polygonal inner groove, 84-Spring, 85-Sliding ring, 86-Elastic washer, 9-Second handle. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] Example

[0032] like Figures 1 to 7 As shown, a sample introduction device for laboratory analysis includes a chassis 1 and a tray assembly. A detection instrument 2 (e.g., an X-ray fluorescence spectrometer) is mounted on the chassis 1. The detection instrument 2 has a detachable cover 21, which can be transparent for direct observation of the internal detection process. A laterally movable tray assembly is located on one side of the chassis 1. The tray assembly includes a turntable 4 and a placement plate 7. Several positioning tubes 5 are evenly distributed on the turntable 4. Triangular connecting plates 72 are located on both sides of the placement plate 7. Vertically formed strip grooves 73 are formed on the connecting plates 72, with arc-shaped grooves at both ends. The inner diameter of the arc-shaped grooves is approximately equal to the outer diameter of the positioning tubes 5. The positioning tubes 5 are positioned close to the inner wall of the upper arc-shaped groove of the strip groove 73. The placement plate 7 can be suspended on the positioning tubes 5 and can rotate and slide relative to the positioning tubes 5. The inner wall of the positioning tube 5 is rotatably provided with a spindle 6, and the end of the spindle 6 is provided with a stop 61. The stop 61 can be rotated and stored in the strip groove 73, or rotated to the upper side of the positioning tube 5 to limit the connecting plate 72 and prevent the placement plate 7 from falling off the positioning tube 5.

[0033] Reference Figure 4 and Figure 7 When the positioning tube 5 passes through the strip groove 73, suspending the placement plate 7 on the positioning tube 5, the stop block 61 rotates to directly above the positioning tube 5, limiting the connection plate 72 and fixing the placement plate 7 to prevent it from detaching from the positioning tube 5. The strip groove 73 has a certain length, which is greater than the length and width of the stop block 61. Therefore, after the stop block 61 rotates into the strip groove 73, it can be completely located inside the strip groove 73, thus not affecting the assembly and disassembly of the placement plate 7. When the placement plate 7 slides relative to the positioning tube 5 for assembly and disassembly, the stop block 61 and the connection plate 72 will not interfere with each other. The strip groove 73 is used to avoid interference, ensuring that the placement plate 7 can be quickly assembled and disassembled.

[0034] In this invention, a rotatable turntable 4 is used to adjust the position of different placement plates 7 and to perform batch sample delivery. The placement plates 7 are positioned and installed using a positioning tube 5. Simultaneously, a spindle 6 inside the positioning tube 5 is used to adjust the position of the placement plate 7 by rotating it. When the stop block 61 is rotated and stored in the slot 73, the placement plate 7 can be fitted onto or removed from the positioning tube 5. When the stop block 61 is rotated to the upper side of the positioning tube 5, the installed placement plate 7 is fixed and limited. This structure allows for quick assembly and disassembly of the turntable 4 and the placement plates 7, facilitating rapid sample delivery. The overall structure is simple, the operation is convenient, and it further improves the efficiency of laboratory analysis.

[0035] Furthermore, the placement plate 7 is evenly distributed with several sample slots 71, which are used to place samples, and multiple samples can be placed at one time for batch testing.

[0036] Reference Figure 7 In a preferred embodiment of this invention, the mandrel 6 is rotatably mounted on the inner wall of the positioning tube 5. The mandrel 6 can be fixed by bearings or other means. The mandrel 6 and the stop block 61 are integrally connected. One end of the mandrel 6 extends to the outside of the turntable 4, and a insertion groove 62 is provided at one end of the mandrel 6. By fitting a second handle 9 in the insertion groove 62, the position of the stop block 61 can be adjusted by rotating the mandrel 6 using the second handle 9, thus enabling the assembly and disassembly of the placement plate 7. The detachable second handle 9 can be used to rotate multiple mandrels 6.

[0037] Reference Figure 8 and Figure 9In another preferred embodiment of this utility model, one end of the mandrel 6 is provided with a connecting hole 63 and a threaded hole 64 sequentially from the outside to the inside. The inner diameter of the connecting hole 63 is larger than the inner diameter of the threaded hole 64. A limit ring 611 is provided on one side of the stop block 61. A spring 84 is connected to one end of the limit ring 611, and one end of the spring 84 is connected to a sliding ring 85. The original length of the limit ring 611, the spring 84, and the sliding ring 85 (when the spring 84 is not stretched) is shorter than the length of the connecting hole 63. The limit ring 611, the spring 84, and the sliding ring 85 are fitted together in the connecting hole 63. A bolt assembly is connected to the threaded hole 64. The bolt assembly is used to press the sliding ring 85 to keep the spring 84 in a stretched state and to keep the stop block 61 tightly attached to the end of the positioning tube 5. This design utilizes a bolt assembly to press the sliding ring 85 against the end of the connecting hole 63. A tension spring 84 keeps the stop block 61 pressed tightly against the end of the positioning tube 5, providing a tension force to the stop block 61. Thus, even when the stop block 61 rotates to any angle, it remains fixed to the end of the positioning tube 5 by the tension of the spring 84. Simultaneously, the tension of the spring 84 does not obstruct the rotation of the stop block 61 by the spindle 6. One end of the spindle 6 is provided with a insertion groove 62, in which a second handle 9 is fitted.

[0038] Furthermore, the bolt assembly includes a smooth rod section 81 and a threaded rod section 82. The outer diameter of the smooth rod section 81 is larger than the outer diameter of the threaded rod section 82. The threaded rod section 82 is threadedly connected in the threaded hole 64. The end of the smooth rod section 81 is fitted with a sliding ring 85. A spring 84 is sleeved on the outside of the smooth rod section 81, and the sliding ring 85 is sleeved on the outside of the threaded rod section 82. This allows the sliding ring 85 to be clamped.

[0039] Furthermore, the bolt assembly includes a nut 8 with a polygonal inner groove 83 at its end for easy insertion of a wrench for rotation and tightening. A stop block 61 has an internal opening, through which a smooth rod section 81 passes. An elastic washer 86 is provided on the smooth rod section 81 between the nut 8 and the stop block 61. When installing the bolt assembly, the threaded rod section 82 connects to the threaded hole 64, causing the smooth rod section 81 to press against the sliding ring 85, stretching the spring 84. This ensures that the stop block 61 is tightly against the end of the positioning tube 5, and the nut 8 fits precisely against the elastic washer 86, preventing over-tightening that would make rotation of the stop block 61 difficult.

[0040] To ensure that the stop block 61 can rotate with the spindle 6, the inner hole of the stop block 61 is polygonal, and the smooth rod segment 81 is also polygonal. Through the cooperation of the smooth rod segment 81 and the stop block 61, they can rotate synchronously. In this way, rotating the spindle 6 can stably drive the stop block 61 to rotate.

[0041] like Figures 1 to 7As shown, a first placement groove 11 is provided on the bottom side of the chassis 1, and a guide rail 13 is provided in the first placement groove 11. A slider 31 is provided on the bottom side of the base 3. The slider 31 is fitted on the guide rail 13 to achieve sliding connection of the base 3.

[0042] Furthermore, two positioning tubes 5 are provided, a triangular mounting plate 32 is provided on one side of the base 3, a rotating shaft 42 is provided at the center of the turntable 4, a central hole 33 is provided at the upper end of the mounting plate 32, the rotating shaft 42 is rotatably installed in the central hole 33 of the mounting plate 32, and a first handle 43 is provided at the end of the rotating shaft 42. By rotating the first handle 43, the turntable 4 can be rotated. During the rotation of the turntable 4, the placement plate 7 remains horizontal due to its own weight.

[0043] Furthermore, two second placement slots 12 are provided on the upper side of the first placement slot 11.

[0044] like Figure 3 As shown, when the two placement plates 7 are rotated to the same horizontal plane, they are positioned directly opposite the second placement slot 12. In this case, the base 3 can be moved to store the two placement plates 7 within the second placement slot 12, while also protecting the sample from external environmental influences. This structure also allows for the storage of the entire tray assembly, reducing equipment size and space requirements when not in use.

[0045] like Figure 1 and Figure 2 As shown, when the two placement plates 7 are rotated to the same vertical axis, they are positioned one above the other. The upper placement plate 7 faces the cover 21, and the lower placement plate 7 faces the first placement groove 11. During sample injection, the base 3 can be moved to allow the upper placement plate 7 to enter the detection instrument 2, and the lower placement plate 7 to be housed in the first placement groove 11. This structure does not affect normal sample injection. After the upper placement plate 7 enters the detection instrument 2, the spindle 6 is rotated to allow the stop block 61 to be housed in the strip groove 73. One hand can then hold the placement plate 7 while the other hand pushes the base 3 outward, separating the positioning tube 5 from the placement plate 7. After the positioning tube 5 leaves the detection instrument 2, the cover 21 is closed, and the detection operation can begin.

[0046] Furthermore, the turntable 4 has two first positioning holes 41, and the mounting plate 32 has a second positioning hole 34. When the turntable 4 rotates and aligns the first positioning holes 41 and the second positioning holes 34, the upper placement plate 7 faces the testing instrument 2, and the lower placement plate 7 faces the first placement groove 11. When the first positioning holes 41 and the second positioning holes 34 are aligned, a pin is inserted to fix the turntable 4 in place, ensuring the position of the turntable 4 is fixed, allowing for sample feeding operations and preventing the turntable 4 from rotating during sample feeding.

[0047] During sample injection, to facilitate the separation of the placement plate 7 and the positioning tube 5, when... Figure 1 and Figure 2 When the sample is injected in the state shown, there is a certain gap between the bottom end of the placement plate 7 and the support surface inside the detection instrument 2; then pull out the pin, so that the turntable 4 rotates by gravity, ensuring that the placement plate 7 is stably supported on the support surface inside the detection instrument 2. Then the mandrel 6 can be rotated, and after the stop block 61 is stored in the strip groove 73, the base 32 can be pushed outward to separate the positioning tube 5 and the placement plate 7, making the sample injection more convenient and faster.

[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sample injection device for laboratory analysis, characterized in that: It includes a chassis and a tray assembly, wherein the chassis is equipped with a testing instrument and a laterally movable tray assembly is provided on one side of the chassis; The tray assembly includes a turntable and a placement plate. Several positioning tubes are evenly distributed on the turntable. Connecting plates are provided on both sides of the placement plate. Vertical slots are provided on the connecting plates. The positioning tubes are arranged close to the upper inner wall of the slots. The inner wall of the positioning tube is rotatably provided with a spindle, and the end of the spindle is provided with a stop block. The stop block can be rotated and stored in the strip groove, or rotated to the upper side of the positioning tube to limit the connection plate.

2. The sample injection device for laboratory analysis according to claim 1, characterized in that: The placement plate is evenly distributed with several placement slots.

3. The sample injection device for laboratory analysis according to claim 1, characterized in that: One end of the mandrel has a connecting hole and a threaded hole sequentially opened from the outside to the inside. A limit ring is provided on one side of the stop block. A spring is connected to one end of the limit ring. One end of the spring is connected to a sliding ring. The limit ring, spring, and sliding ring are fitted together in the connecting hole. A bolt assembly is connected to the threaded hole. The bolt assembly is used to press the sliding ring to put the spring in a stretched state and to make the stop block fit tightly against the end of the mandrel.

4. The sample injection device for laboratory analysis according to claim 3, characterized in that: The bolt assembly includes a smooth rod section and a threaded rod section, the threaded rod section being threadedly connected in a threaded hole, and the end of the smooth rod section being fitted with a sliding ring.

5. The sample injection device for laboratory analysis according to claim 4, characterized in that: The bolt assembly includes a nut, the smooth rod section passes through a stop block, and an elastic washer is provided on the smooth rod section between the nut and the stop block.

6. The sample injection device for laboratory analysis according to claim 1, characterized in that: The tray assembly includes a base, a first placement groove is provided on the bottom side of the chassis, a guide rail is provided in the first placement groove, and a slider is provided on the bottom side of the base, the slider being fitted onto the guide rail.

7. The sample injection device for laboratory analysis according to claim 6, characterized in that: Two positioning tubes are provided, a mounting plate is provided on one side of the base, a rotating shaft is provided at the center of the turntable, the rotating shaft is rotatably mounted on the mounting plate, and a first handle is provided at the end of the rotating shaft.

8. The sample injection device for laboratory analysis according to claim 7, characterized in that: One end of the mandrel is provided with a insertion groove, and a second handle is provided in the insertion groove.

9. The sample injection device for laboratory analysis according to claim 7, characterized in that: Two second placement slots are provided on the upper side of the first placement slot. When the two placement plates are rotated to the same horizontal plane, the two placement plates are positioned directly opposite the second placement slots.

10. The sample injection device for laboratory analysis according to claim 7, characterized in that: The turntable has two first positioning holes, and the mounting plate has a second positioning hole. When the turntable rotates and the first and second positioning holes are aligned, the upper placement plate faces the testing instrument, and the lower placement plate faces the first placement slot.

Images