A stable isotope sample preparation liquid addition system

Abstract

A stable isotope sample processing liquid addition system includes a support platform and a main support mounted on it. A liquid addition device is mounted on the main support. The liquid addition device includes a slide rail slidably mounted on the upper side of the main support, a needle holder that can be raised and lowered on the slide rail, and a liquid addition needle mounted below the needle holder. A liquid supply mechanism communicating with the liquid addition needle is also provided on one side of the main support. The slide rail includes a stop plate horizontally mounted below the needle holder, with a through hole on the stop plate corresponding to the position of the liquid addition needle. By driving the lateral movement of the needle holder through the slide rail, and in conjunction with the raising and lowering of the needle holder and the liquid supply operation of the liquid supply mechanism, the injection of reaction liquid into the reaction flask on the support platform can be completed sequentially. Even if the reaction flask is sealed with a rubber stopper during a liquid addition process, the injection of reaction liquid into the reaction flask can still be completed smoothly by raising and lowering the needle holder. Moreover, when the needle holder rises, the reaction flask can be stopped by the stop plate, preventing the rising needle holder from lifting the reaction flask, significantly improving the sample processing efficiency of stable isotopes.

Description

Technical Field

[0001] This utility model relates to the field of isotope sample processing technology, specifically a stable isotope sample processing liquid addition system. Background Technology

[0002] In the sample processing of restabilized isotopes, different reaction liquids are usually injected into the reaction flask in a preset ratio and sequence, and after a series of reactions, the reaction gases are displaced. Currently, the injection of reaction liquids is usually done manually, which makes the processing efficiency relatively low. Moreover, since the sample processing of stable isotopes usually involves the production of gases, the reaction flask needs to be sealed after a certain liquid is added before the addition of liquid can continue, which further reduces the sample processing efficiency of stable isotopes. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model provides a stable isotope sample processing liquid addition system.

[0004] The technical solution of this utility model is as follows: A stable isotope sample processing liquid addition system includes a support platform and a main support mounted thereon. The main support platform is equipped with a liquid addition device. The reaction flask can be placed on the support platform. Through the operation of the liquid addition device, the reaction liquid can be added to the reaction flask in sequence. After a series of reactions, the stable isotope sample processing is completed.

[0005] As the core technical concept of this utility model, the liquid addition device includes a slide that is laterally slidably mounted on the upper side of the main support. A needle holder is mounted on the slide that can be raised and lowered. A liquid addition needle is mounted on the lower side of the needle holder. A liquid supply mechanism communicating with the liquid addition needle is also provided on one side of the main support. By driving the lateral movement of the needle holder through the slide, and in conjunction with the raising and lowering of the needle holder and the liquid supply operation of the liquid supply mechanism, the injection of the reaction liquid in the reaction bottle on the support platform can be completed sequentially. The slide includes a stop plate horizontally mounted below the needle holder. A through hole is opened on the stop plate corresponding to the position of the liquid addition needle. With this setting, even if the reaction bottle is sealed with a rubber stopper during a liquid addition process, the injection of the reaction liquid in the reaction bottle can still be completed smoothly by raising and lowering the needle holder. Moreover, when the needle holder rises, the reaction bottle can be stopped by the stop plate to prevent the rising of the needle holder from lifting the reaction bottle, which significantly improves the sample processing efficiency of stable isotopes.

[0006] As described above, in a preferred embodiment of the stable isotope sample processing liquid addition system, to further improve the liquid addition efficiency of the system and thus ensure the processing efficiency of stable isotope samples, multiple liquid addition needles are arranged linearly and intermittently along the sliding direction perpendicular to the slide, so that the movement of the slide can drive the liquid addition needles in rows to complete the injection of the reaction liquid.

[0007] As a further preferred embodiment, in order to ensure that the amount of reaction liquid added can be better controlled, the liquid supply mechanism is also provided with multiple sets of liquid injection needles.

[0008] Preferably, in order to better control the number of reaction flasks that can be added at one time through the injection needle, each group of the liquid supply mechanism includes an injection drive motor.

[0009] As described above, in a preferred embodiment of the stable isotope sample processing liquid addition system, to prevent the vertical movement of the needle holder from disrupting the tubular connection between the liquid addition needle and the liquid supply mechanism, the needle holder includes two horizontal plates arranged opposite each other, and the liquid addition needle is arranged vertically with its upper end passing through the lower horizontal plate and fixed to the lower horizontal plate.

[0010] As a further preferred embodiment, the liquid dispensing device also includes a lifting drive motor mounted on the slide and connected to the needle holder. In order to more accurately control the dosage of the reaction liquid that can be dispensed by the dispensing needle at one time, and to ensure the stability of the vertical lifting of the needle holder, the lifting drive motor is driven by a screw.

[0011] Preferably, to further ensure the stability of the vertical lifting of the needle holder and to ensure that all liquid injection needles can be smoothly inserted into the reaction bottle, the slide includes two vertical plates arranged opposite each other, the stop plate is horizontally arranged between the lower ends of the two vertical plates, and the two sides of the needle holder are slidably connected to the inner sides of the two vertical plates.

[0012] As described above, in a preferred embodiment of the stable isotope sample processing liquid addition system, to ensure the cleanliness of the liquid addition needle and the overall liquid supply mechanism when changing the reaction liquid to be added, a cleaning tank is also provided on the main support or support platform located below one end of the slide movement path, and the liquid addition needle can be driven by the needle holder to extend into the cleaning tank.

[0013] The beneficial effects of this utility model are as follows: This utility model is a stable isotope sample processing liquid addition system. By using a slide to drive the needle holder to move laterally, and in conjunction with the lifting and lowering of the needle holder and the liquid supply mechanism, the injection of reaction liquid into the reaction flask on the support platform can be completed sequentially. Even if the reaction flask is sealed with a rubber stopper during a liquid addition process, the injection of reaction liquid into the reaction flask can still be completed smoothly by lifting and lowering the needle holder. Moreover, when the needle holder rises, the reaction flask can be stopped by a stop plate to prevent the rising of the needle holder from lifting the reaction flask, which significantly improves the sample processing efficiency of stable isotopes. Attached Figure Description

[0014] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0015] In the attached diagram: Figure 1 This is a schematic diagram of the liquid addition system in the embodiment; Figure 2 This is a schematic diagram of the liquid addition mechanism in the embodiment; Figure 3 This is a schematic diagram of the liquid supply mechanism in the embodiment; The components represented by the various reference numerals in the diagram are: 1. Support platform; 2. Main support; 3. Liquid filling device; 31. Slide carriage; 311. Stop plate; 32. Lateral movement drive mechanism; 321. First threaded rod; 322. Lateral movement drive motor; 33. Liquid filling mechanism; 331. Needle holder; 332. Liquid filling needle; 333. Second threaded rod; 334. Lifting drive motor; 34. Liquid supply mechanism; 341. Fixing plate; 342. Needle tube; 343. Third threaded rod; 344. Drive block; 345. Liquid filling drive motor. Detailed Implementation

[0016] Exemplary embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings.

[0017] Example This embodiment provides a stable isotope sample preparation and liquid addition system. (See [link to documentation]) Figure 1 The system includes a support platform 1 and a main support 2 mounted on it. The main support 2 is equipped with a liquid addition device 3. The reaction bottle can be placed on the support platform 1. Through the operation of the liquid addition device 3, the reaction liquid can be added to the reaction bottle on the support platform 1 in sequence. After a series of reactions, the sample processing of the stable isotope is completed. The structure of the liquid addition system (the above-mentioned stable isotope sample processing liquid addition system) is described in detail below with reference to the accompanying drawings.

[0018] In this embodiment, the liquid addition device 3 includes a slide 31 that is laterally slidably disposed on the upper side of the main support 2. The slide 31 is provided with a liquid addition mechanism 33. The main support 2 is provided with a liquid supply mechanism 34 that communicates with the liquid addition mechanism 33 on one side. The main support 2 is also provided with a transverse drive mechanism 32 that is pulsatingly connected to the slide 31. The transverse drive mechanism 32 can drive the slide 31 to slide laterally, thereby cooperating with the work of the liquid addition mechanism 33 and the liquid supply mechanism 34 to sequentially complete the addition of the reaction liquid in the reaction bottle on the support platform 1.

[0019] As a preferred embodiment of this invention, in order to ensure the stability of the sliding of the carriage 31, the transverse drive mechanism 32 includes a first threaded rod 321 transversely disposed on the upper side of the main support 2, and a transverse drive motor 322 connected to one end of the first threaded rod 321. The carriage 31 is helically connected to the first threaded rod 321. Through the action of the transverse drive motor 322, the first threaded rod 321 can be driven to rotate, thereby driving the carriage 31 to move laterally.

[0020] In this embodiment, combined with Figure 2 Regarding the structure of the liquid addition mechanism 33, it includes a needle holder 331 that can be raised and lowered and is mounted on the slide 31. A liquid addition needle 332 is provided on the lower side of the needle holder 331. The liquid supply mechanism 34 is connected to the upper end tube of the liquid addition needle 332. The slide 31 can drive the needle holder 331 to move laterally. In conjunction with the raising and lowering of the needle holder 331 and the liquid supply operation of the liquid supply mechanism 34, the injection of reaction liquid into the reaction bottle on the support platform 1 can be completed sequentially.

[0021] In a preferred embodiment of this invention, the slide 31 includes a stop plate 311 horizontally disposed below the needle holder 331. The stop plate 311 has a through hole corresponding to the position of the liquid injection needle 332. With this arrangement, even if the reaction bottle is sealed with a rubber stopper during a liquid injection process, the injection of the reaction liquid in the reaction bottle can still be completed smoothly by raising and lowering the needle holder 331. Moreover, when the needle holder 331 rises, the reaction bottle can be stopped by the stop plate 311, preventing the rise of the needle holder 331 from lifting the reaction bottle, which significantly improves the sample processing efficiency of stable isotopes.

[0022] To further improve the liquid addition efficiency of the liquid addition system and thus ensure the processing efficiency of stable isotope samples, multiple liquid addition needles 332 are arranged linearly and intermittently along the sliding direction perpendicular to the slide 31, so that the movement of the slide 31 can drive the liquid addition needles 332 to complete the injection of the reaction liquid in a row.

[0023] Furthermore, to prevent the vertical movement of the needle holder 331 from disrupting the tubular connection between the upper end of the liquid injection needle 332 and the liquid supply mechanism 34, the needle holder 331 includes two horizontal plates arranged opposite each other, and the liquid injection needle 332 is arranged vertically with its upper end passing through the lower horizontal plate and fixed to the lower horizontal plate.

[0024] As a further preferred embodiment, the liquid dispensing device 3 also includes a lifting drive motor 334 disposed on the slide 31 and connected to the needle holder 331. In order to more accurately control the dosage of the reaction liquid that can be dispensed by the liquid dispensing needle 332 at one time, and to ensure the stability of the vertical lifting of the needle holder 331, the lifting drive motor 334 is driven by a screw drive.

[0025] Specifically, the slide 31 has a second threaded rod 333 vertically arranged in the middle, and a lifting drive 334 connected to the second threaded rod 333 is provided on the upper side of the slide 31. The second threaded rod 333 passes through the needle holder 331 and is screwed to the needle holder 331. Through the action of the lifting drive 334, the second threaded rod 333 can be rotated, thereby driving the needle holder 331 to rise and fall vertically.

[0026] Preferably, to further ensure the stability of the vertical lifting of the needle holder 331 and to ensure that all the liquid injection needles 332 can be smoothly inserted into the reaction bottle, the slide 31 also includes two vertical plates arranged opposite each other on the left and right, and the stop plate 311 is horizontally arranged between the lower ends of the two vertical plates. The two sides of the needle holder 331 are slidably connected to the inner sides of the two vertical plates.

[0027] In this embodiment, combined with Figure 3 As a preferred embodiment of this example, in order to ensure that the amount of reaction liquid added can be better controlled, the liquid supply mechanism 34 is also provided with multiple sets of liquid injection needles 332.

[0028] As a further preferred embodiment, in order to better control the number of reaction bottles that can be added at one time through the liquid injection needle 332, each set of liquid supply mechanisms 34 includes a liquid injection drive motor 345.

[0029] Specifically, the liquid supply mechanism 34 includes a vertically arranged fixing plate 341 fixed to the main support 2. A needle tube 342 is fixed to the front side of the fixing plate 341. The needle tube 342 is connected to the liquid injection needle 332. A driving block 344 is vertically slidably arranged on the rear side of the fixing plate 341. A liquid suction piston is provided inside the needle tube 342. One side of the driving block 344 passes through the fixing plate 341 and is connected to the liquid suction piston.

[0030] Furthermore, the liquid supply mechanism 34 also includes a third threaded rod 343 vertically disposed on the rear side of the fixed plate 341. The liquid supply drive 345 is connected to the third threaded rod 343 in a transmission manner. The third threaded rod 343 passes through the drive block 344 and is screwed to the fixed block. The action of the liquid supply drive 345 can drive the third threaded rod 343 to rotate, thereby driving the drive block 344 to slide vertically. The vertical sliding of the drive block 344 can drive the liquid suction piston to rise and fall, thereby driving the needle tube 342 to complete the liquid suction and discharge work.

[0031] In this embodiment, as a preferred implementation, in order to ensure the overall cleanliness of the liquid injection needle 332 and the liquid supply mechanism 34 when the reaction liquid to be added is replaced, a cleaning tank is also provided on the main support 2 or the support platform 1 at a position below one end of the moving path of the slide 31, and the liquid injection needle 332 can be driven by the needle holder 331 to extend into the cleaning tank.

[0032] Based on this, a nozzle is provided on the inner side of the cleaning tank corresponding to the liquid injection needle 332. When the liquid injection needle 332 is extended into the cleaning tank, the operation of the liquid supply mechanism 34 can be controlled to complete the cleaning work of the needle tube 342, the liquid injection needle 332, and the internal part of the connecting tube between the needle tube 342 and the liquid injection needle 332. After the cleaning is completed, the wastewater is discharged, and then the nozzle can complete the spray cleaning work of the outside of the liquid injection needle 332, which effectively ensures the purity of the reaction liquid added when the next liquid injection is performed.

Claims

1. A stable isotope sample processing and liquid addition system, characterized in that, Includes a support platform (1) and a main support (2) installed on it, wherein the main support (2) is provided with a liquid adding device (3); The liquid dispensing device (3) includes a slide (31) that is laterally slidably mounted on the upper side of the main support (2). A needle holder (331) is provided on the slide (31) and a liquid dispensing needle (332) is provided on the lower side of the needle holder (331). A liquid supply mechanism (34) communicating with the liquid dispensing needle (332) is also provided on one side of the main support (2). The slide (31) includes a stop plate (311) horizontally disposed below the needle holder (331), and the stop plate (311) has a through hole at the position corresponding to the liquid injection needle (332).

2. The stable isotope sample processing liquid addition system according to claim 1, characterized in that, The liquid injection needles (332) are arranged in multiple linear gaps along the sliding direction perpendicular to the slide (31).

3. The stable isotope sample processing liquid addition system according to claim 2, characterized in that, The liquid supply mechanism (34) is provided with multiple sets corresponding to multiple liquid injection needles (332).

4. The stable isotope sample processing liquid addition system according to claim 3, characterized in that, Each of the liquid supply mechanisms (34) includes a liquid supply drive (345).

5. The stable isotope sample processing liquid addition system according to claim 1, characterized in that, The needle holder (331) includes two horizontal plates arranged opposite each other, and the liquid injection needle (332) is arranged vertically, with its upper end passing through the lower horizontal plate and fixed to the lower horizontal plate.

6. The stable isotope sample processing liquid addition system according to claim 1, characterized in that, The liquid dispensing device (3) also includes a lifting drive motor (334) mounted on the slide (31) and connected to the needle holder (331) in a transmission. The lifting drive (334) is driven by a screw drive.

7. The stable isotope sample processing liquid addition system according to claim 6, characterized in that, The carriage (31) includes two vertical plates arranged opposite each other, and the stop plate (311) is horizontally arranged between the lower ends of the two vertical plates; The two sides of the needle holder (331) are slidably connected to the inner sides of the two vertical plates.

8. A stable isotope sample preparation and liquid addition system according to any one of claims 1-6, characterized in that, A cleaning tank is also provided on the main support (2) or the support platform (1) at one end below the moving path of the slide (31).

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