Sampling device for in-situ mass spectrometry

Abstract

The sampling device comprises a base, a rotating shaft, a first rotating motor, a test tube disc, a fixing assembly, an electric lifting rod and a sampling head, the rotating shaft is rotatably inserted into the top surface of the base and is driven by the first rotating motor to rotate, the test tube disc is fixedly arranged at the top end of the rotating shaft, and the electric lifting rod is driven by the fixing assembly to rotate. A plurality of test tube placing openings are formed in the test tube disc in the circumferential direction, the fixing assemblies are arranged below the test tube placing openings and used for fixing test tubes inserted into the test tube placing openings, and each fixing assembly comprises a connecting rod, a fixing clamp and a supporting seat; the top end of the connecting rod is fixedly mounted on the bottom surface of the test tube disc and is positioned beside the test tube placing opening; and the fixing clamp and the supporting seat are sequentially arranged on the connecting rod from top to bottom in a sliding manner and are respectively used for clamping a tube body of a test tube and supporting the bottom of the test tube.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a sampling device for in-situ mass spectrometry. Background Art

[0002] An in-situ mass spectrometer is also called a mass spectrometer. It is an instrument that separates and detects different isotopes. It is a type of instrument that separates and detects the composition of substances according to the mass differences of atoms, molecules or molecular fragments of substances based on the principle that charged particles can be deflected in an electromagnetic field. When using an in-situ mass spectrometer, a sampling device is required to sample from a sample tube. However, in actual use, different sample tubes have different sizes. Existing sampling devices cannot be adjusted and fixed for tubes of different sizes. During the sampling process, the tubes are prone to shaking, which is not conducive to the sampling work and affects the sampling efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a sampling device for in-situ mass spectrometry to solve the above problems.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A sampling device for in-situ mass spectrometry, comprising a base, a rotating shaft, a first rotating motor, a test tube disc, a fixing assembly, an electric lifting rod and a sampling head, wherein the rotating shaft is rotatably inserted on the top surface of the base and driven to rotate by the first rotating motor, the test tube disc is fixedly arranged at the top end of the rotating shaft, the test tube disc is circumferentially provided with a plurality of test tube placement openings, the fixing assembly is arranged below the test tube placement opening for fixing the test tube inserted in the test tube placement opening, the fixing assembly comprises a connecting rod, a fixing clamp and a supporting seat, the connecting rod The top end of the connecting rod is fixedly mounted on the bottom surface of the test tube tray and is located beside the test tube placement port. The fixing clamp and the supporting seat are slidably arranged on the connecting rod from top to bottom in sequence, and are respectively used to clamp the tube body of the test tube and support the bottom of the test tube. A mounting vertical rod is fixed on the top surface of the base and is located beside the test tube tray. A mounting cross bar is rotatably arranged on the top end of the mounting vertical rod, and is driven to rotate by a second rotating motor. The sampling head is lifted and lowered by the electric lifting rod and is arranged at the end of the mounting cross bar and is located directly above the test tube placement port.

[0006] Preferably, the rod wall of the connecting rod is provided with a first lifting groove in the vertical direction, the notch of the first lifting groove is slidably provided with a first lifting seat, the first lifting groove is provided with a first driving screw rotating in the horizontal direction, the first lifting seat is provided with a first through hole for the first driving screw to pass through, the first through hole is fixed with a first nut which is threadably matched with the first driving screw, the bottom end of the connecting rod is provided with a first lifting motor which drives the first driving screw to rotate, the first lifting seat is provided with a first electric telescopic rod which is telescopic in the horizontal direction, and the telescopic top end thereof is provided with the support seat.

[0007] Preferably, a support groove is provided on the top surface of the support seat, and a protective cushion is laid in the support groove.

[0008] Preferably, a second lifting slot is provided in the vertical direction on the rod wall of the connecting rod and located beside the first lifting slot, a second lifting seat is slidably provided on the notch of the second lifting slot, a second driving screw rotating in the horizontal direction is inserted in the second lifting slot, a second through hole is provided for the second driving screw to pass through the second lifting seat, a second nut which is threadably matched with the second driving screw is fixed in the second through hole, a second lifting motor which drives the second driving screw to rotate is provided at the bottom end of the connecting rod, a second electric telescopic rod which is telescopic in the horizontal direction is provided on the second lifting seat, a U-shaped rod is provided at the telescopic top end of the second electric telescopic rod, a third electric telescopic rod is respectively provided at the top ends on the left and right sides of the U-shaped rod, and the telescopic top ends of the two third electric telescopic rods are arranged facing each other and are each provided with a fixing clamp.

[0009] Preferably, the fixing clip has an arc-shaped structure, and a protective cushion is laid on the inner side of the arc.

[0010] Preferably, a first distance sensor is provided on the base and directly below the test tube placement port for measuring the height distance between the bottom end of the test tube and the base, and a second distance sensor is provided on the rod wall of the connecting rod for measuring the horizontal distance between the side wall of the test tube and the connecting rod, and the first distance sensor and the second distance sensor are both connected to the single-chip microcomputer controller, and the single-chip microcomputer controller is also connected to the first lifting motor, the second lifting motor, the first rotating motor, the second rotating motor, the electric lifting rod, the first telescopic rod, the second telescopic rod and the third telescopic rod.

[0011] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0012] The utility model provides a sampling device for in-situ mass spectrometry. A test tube tray can hold multiple groups of test tubes. When in use, different test tubes can be sampled through a sampling head by rotating the test tube tray. The tube bodies of test tubes of different sizes inserted into the test tube placement opening and the bottoms of the supporting test tubes are supported and fixed by the cooperation of a fixing clamp with an adjustable position and a supporting seat, thereby avoiding the shaking of reagent tubes during sampling and improving the stability and convenience of the sampling work. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the fixing component of the utility model. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0016] It should be noted that in the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientation or position relationship shown in the accompanying 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 of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0017] Example

[0018] Please refer to Figure 1 to Figure 2As shown, the utility model discloses a sampling device for in-situ mass spectrometry, including a base 1, a rotating shaft 2, a first rotating motor (not shown in the figure), a test tube disc 4, a fixing assembly 5, an electric lifting rod 6 and a sampling head 7. The rotating shaft 2 is rotatably inserted on the top surface of the base 1, and is driven to rotate by the first rotating motor. The test tube disc 4 is fixed on the top of the rotating shaft 2. The test tube disc 4 is circumferentially provided with a plurality of test tube placement openings 41. A fixing assembly 5 is provided below the test tube placement opening 41 for fixing a test tube 3 inserted in the test tube placement opening. The fixing assembly 5 includes a connecting rod 51, a fixing clamp 52 and a support The top of the support seat 53 and the connecting rod 51 are fixedly installed on the bottom surface of the test tube tray 4 and are located beside the test tube placement port 41. The fixing clamp 52 and the support seat 53 are slidably arranged on the connecting rod 51 from top to bottom in sequence, and are respectively used to clamp the tube body of the test tube 3 and support the bottom of the test tube 3. The top surface of the base 1 and the side of the test tube tray 4 are fixedly provided with a mounting vertical rod 11. The top of the mounting vertical rod 11 is rotatably provided with a mounting cross bar 12, and it is driven to rotate by a second rotating motor 13. The sampling head 7 can be lifted and lowered by the electric lifting rod 6 and is arranged at the end of the mounting cross bar 122 and is located directly above the test tube placement port 41.

[0019] A first lifting groove 511 is provided on the rod wall of the connecting rod 51 in the vertical direction, a first lifting seat 54 is slidably provided on the notch of the first lifting groove 511, a first driving screw 512 rotating in the horizontal direction is inserted in the first lifting groove 511, the first lifting seat 54 is provided with a first through hole for the first driving screw 512 to pass through, a first nut 513 threadably matched with the first driving screw 512 is fixed in the first through hole, a first lifting motor 55 for driving the first driving screw 513 to rotate is provided at the bottom end of the connecting rod 51, a first electric telescopic rod 541 extending and retracting in the horizontal direction is provided on the first lifting seat 54, and a support seat 53 is provided at its telescopic top end.

[0020] A support groove 531 is formed on the top surface of the support seat 53 , and a protective cushion is laid in the support groove 531 .

[0021] A second lifting slot 514 is provided on the rod wall of the connecting rod 51 and is located beside the first lifting slot 511 in the vertical direction. A second lifting seat 56 is slidably provided on the notch of the second lifting slot 514. A second driving screw 515 rotating in the horizontal direction is inserted in the second lifting slot 514. The second lifting seat 56 is provided with a second through hole for the second driving screw 515 to pass through. A second nut 516 threadedly matched with the second driving screw 515 is fixed in the second through hole. A second lifting motor 57 that drives the second driving screw 515 to rotate is provided at the bottom end of the connecting rod 51. A second electric telescopic rod 561 that is telescopic in the horizontal direction is provided on the second lifting seat 56. A U-shaped rod 562 is provided at the telescopic top end of the second electric telescopic rod 561. A third electric telescopic rod 563 is provided at the top ends of the left and right sides of the U-shaped rod 562 respectively. The telescopic top ends of the two third electric telescopic rods 563 are arranged facing each other and are each provided with a fixing clamp 52.

[0022] The fixing clip 52 is in an arc-shaped structure, and a protective cushion is laid on the inner side of the arc.

[0023] A first distance sensor 14 is provided on the base 1 and directly below the test tube placement port for measuring the height distance between the bottom end of the test tube 3 and the base 1. A second distance sensor is provided on the rod wall of the connecting rod 51 for measuring the horizontal distance between the side wall of the test tube 3 and the connecting rod 51. The first distance sensor and the second distance sensor 14 are both connected to the single-chip microcomputer controller, and the single-chip microcomputer controller is also connected to the first lifting motor 55, the second lifting motor 57, the first rotating motor 3, the second rotating motor 13, the electric lifting rod 6, the first telescopic rod 541, the second telescopic rod 561 and the third telescopic rod 563.

[0024] The above are only preferred specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A sampling device for in-situ mass spectrometry, characterized in that: The invention comprises a base, a rotating shaft, a first rotating motor, a test tube tray, a fixing assembly, an electric lifting rod and a sampling head, wherein the rotating shaft is rotatably inserted on the top surface of the base and driven to rotate by the first rotating motor, the test tube tray is fixedly arranged at the top end of the rotating shaft, the test tube tray is circumferentially provided with a plurality of test tube placement openings, the fixing assembly is arranged below the test tube placement openings for fixing the test tubes inserted in the test tube placement openings, the fixing assembly comprises a connecting rod, a fixing clamp and a supporting seat, the top end of the connecting rod is fixedly mounted on the bottom surface of the test tube tray and is located beside the test tube placement opening, the fixing clamp and the supporting seat are slidably arranged on the connecting rod from top to bottom in sequence and are used to clamp the tube body of the test tube and support the bottom of the test tube respectively, the top surface of the base and the side of the test tube tray are fixedly provided with a mounting vertical rod, the top end of the mounting vertical rod is rotatably provided with a mounting cross bar, and is driven to rotate by the second rotating motor, the sampling head can be lifted and lowered by the electric lifting rod and is arranged at the end of the mounting cross bar and is located directly above the test tube placement opening.

2. A sampling device for in-situ mass spectrometry according to claim 1, characterized in that: The rod wall of the connecting rod is provided with a first lifting groove in the vertical direction, a first lifting seat is slidably provided at the notch of the first lifting groove, a first driving screw rotating in the horizontal direction is inserted in the first lifting groove, the first lifting seat is provided with a first through hole for the first driving screw to pass through, a first nut threadably matched with the first driving screw is fixed in the first through hole, a first lifting motor driving the first driving screw to rotate is provided at the bottom end of the connecting rod, a first electric telescopic rod extending and retracting in the horizontal direction is provided on the first lifting seat, and the support seat is provided at its telescopic top end.

3. A sampling device for in-situ mass spectrometry according to claim 2, characterized in that: A support groove is provided on the top surface of the support seat, and a protective cushion is laid in the support groove.

4. A sampling device for in-situ mass spectrometry according to claim 3, characterized in that: The rod wall of the connecting rod is provided with a second lifting slot in the vertical direction and is located beside the first lifting slot. A second lifting seat is slidably provided on the notch of the second lifting slot. A second driving screw rotating in the horizontal direction is inserted in the second lifting slot. The second lifting seat is provided with a second through hole for the second driving screw to pass through. A second nut threadably matched with the second driving screw is fixed in the second through hole. A second lifting motor that drives the second driving screw to rotate is provided at the bottom end of the connecting rod. A second electric telescopic rod that telescopes in the horizontal direction is provided on the second lifting seat. A U-shaped rod is provided at the telescopic top end of the second electric telescopic rod. A third electric telescopic rod is respectively provided at the top ends of the left and right sides of the U-shaped rod. The telescopic top ends of the two third electric telescopic rods are arranged facing each other and are each provided with a fixing clamp.

5. A sampling device for in-situ mass spectrometry according to claim 4, characterized in that: The fixing clip is in an arc-shaped structure, and a protective cushion is laid on the inner side of the arc.

6. A sampling device for in-situ mass spectrometry according to claim 5, characterized in that: A first distance sensor is provided on the base and directly below the test tube placement port for measuring the height distance between the bottom end of the test tube and the base, and a second distance sensor is provided on the rod wall of the connecting rod for measuring the horizontal distance between the side wall of the test tube and the connecting rod. The first distance sensor and the second distance sensor are both connected to the single-chip microcomputer controller, and the single-chip microcomputer controller is also connected to the first lifting motor, the second lifting motor, the first rotating motor, the second rotating motor, the electric lifting rod, the first telescopic rod, the second telescopic rod and the third telescopic rod.

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