Sample introduction device for in-situ mass spectrometry

Abstract

The utility model discloses a sample introduction device for in-situ mass spectrometry, which comprises a mass spectrometer body and a sample introduction mechanism, the sample introduction mechanism comprises a sample introduction turntable, a rotating assembly, a sample introduction needle tube, a fixing assembly and a sample introduction cylinder, the mass spectrometer body is provided with a sample introduction port, and the sample introduction cylinder is provided with a sample introduction port. The sample injection rotating disc is rotationally arranged above the sample injection port through a rotating assembly, a plurality of placing ports are formed in the sample injection rotating disc in the circumferential direction, one placing port is located over the sample injection port, and a set of sample injection needle tubes are movably inserted into each placing port and fixed through the fixing assembly; the sample injection cylinder is arranged above the sample injection turntable through a mounting frame, and a cylinder telescopic end of the sample injection cylinder is in contact with and propped against the sample injection needle tube positioned above the sample injection port.

Description

Technical Field

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

[0002] In-situ mass spectrometer is also called mass spectrometer. It is an instrument for separating and detecting different isotopes. It is a type of instrument that separates and detects the composition of substances according to the mass difference of atoms, molecules or molecular fragments of substances based on the principle that charged particles can be deflected in an electromagnetic field. The injection methods of mass spectrometer include diffusion injection, probe injection and chromatographic injection. During the actual injection of probe injection, different sample needles have different sizes. The existing injection device cannot be adjusted and fixed for needles of different sizes. The needle is easy to shake during the injection process, which is not conducive to the injection work and affects the injection efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a sample injection 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 comprises a mass spectrometer body and a sampling mechanism, wherein the sampling mechanism comprises a sampling turntable, a rotating assembly, a sampling needle tube, a fixing assembly and a sampling cylinder, wherein the mass spectrometer body is provided with a sampling port, and the sampling turntable is rotatably arranged above the sampling port through the rotating assembly, and a plurality of placement openings are arranged circumferentially on the sampling turntable, and one of the placement openings is located directly above the sampling port, and each of the placement openings is movably inserted with a group of the sampling needle tubes and fixed by the fixing assembly, and the fixing assembly comprises a track rod, a lifting seat, a driving screw, a lifting driving motor, an X-axis electric telescopic rod, a U-shaped rod, a Y-axis electric telescopic rod and a fixing clamp, and the rod wall of the track rod is provided with lifting track grooves facing each other vertically, and the slots of the lifting track grooves are slidingly arranged The lifting seat is arranged, a driving screw rotating in the horizontal direction is inserted in the lifting track groove, the lifting seat is provided with a through hole for the driving screw to pass through, a nut matched with the driving screw thread is fixed in the through hole, a lifting driving motor driving the driving screw to rotate is arranged at the bottom of the track rod, an X-axis electric telescopic rod is arranged on the lifting seat, a U-shaped rod is arranged at the telescopic top end of the X-axis electric telescopic rod, a Y-axis electric telescopic rod is arranged at the top end of the left and right sides of the U-shaped rod respectively, the telescopic top ends of the two Y-axis electric telescopic rods are arranged facing each other and are both provided with a fixing clamp, the injection cylinder is arranged above the injection turntable through a mounting frame, and the cylinder telescopic end of the injection cylinder contacts and abuts the injection needle tube located above the injection port.

[0006] Preferably, the lifting track grooves include a plurality of groups arranged at intervals along the horizontal direction, and the fixing clips on each group of the lifting track grooves are distributed along the vertical direction to fix the injection needle tubes at different height positions.

[0007] Preferably, the fixing clips of the group located at the bottom are in an L-shaped structure, and the fixing clips of the other groups are in an arc-shaped structure.

[0008] Preferably, a protective cushion is provided on one side of the fixing clamp close to the injection needle tube.

[0009] Preferably, the rotating assembly includes a support seat, a rotating rod and a rotating drive motor, the support seat is fixed on the mass spectrometer body, the rotating rod is rotatably inserted on the top surface of the support seat, the rotating drive motor is used to drive the rotating rod to rotate, and the injection turntable is fixed on the top of the rotating rod.

[0010] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0011] The utility model provides an injection device for in-situ mass spectrometry. The injection turntable can be used to place multiple groups of injection needles. When in use, the samples in different injection needles can be added into the mass spectrometer body through the injection port by rotating the injection turntable, thereby improving the injection efficiency. The injection needles of different sizes are inserted into the placement port for fixing by a fixing clamp with an adjustable position, thereby avoiding the shaking of the injection needles during injection and improving the stability of the injection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the fixing component of the utility model. DETAILED DESCRIPTION

[0014] 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.

[0015] 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.

[0016] Example

[0017] Please refer to Figure 1 to Figure 2 As shown, the utility model discloses an injection device for in-situ mass spectrometry, including a mass spectrometer body and an injection mechanism, the injection mechanism includes an injection turntable 1, a rotating component 2, an injection needle tube 3, a fixing component 4 and an injection cylinder 5, the mass spectrometer body is provided with an injection port, the injection turntable 1 is rotatably arranged above the injection port through the rotating component 2, a plurality of placement ports 11 are circumferentially arranged on the injection turntable 1, and one of the placement ports 11 is located directly above the injection port 11, each placement port 11 is movably inserted with a group of injection needle tubes 6 and fixed by a fixing component 4, the fixing component 4 includes a track rod 41, a lifting seat 42, a driving screw 43, a lifting drive motor 44, an X-axis electric telescopic rod 45, a U-shaped rod 46, a Y-axis electric telescopic rod 47 and a fixing clamp 48, the rod wall of the track rod 41 is provided with lifting track grooves 411 facing each other vertically, and the lifting A lifting seat 42 is slidably provided at the notch of the track groove 411, a driving screw 43 rotating in the horizontal direction is inserted in the lifting track groove 411, the lifting seat 42 is provided with a through hole for the driving screw 43 to pass through, a nut 421 threadably matched with the driving screw 43 is fixed in the through hole, a lifting drive motor 44 for driving the driving screw 43 to rotate is provided at the bottom end of the track rod 41, an X-axis electric telescopic rod 45 is provided on the lifting seat 42, a U-shaped rod 46 is provided at the telescopic top end of the X-axis electric telescopic rod 45, a Y-axis electric telescopic rod 47 is respectively provided at the top of the left and right sides of the U-shaped rod 46, the telescopic top ends of the two Y-axis electric telescopic rods 47 are arranged opposite to each other and are both provided with a fixing clamp 48, the injection cylinder 5 is arranged above the injection turntable 1 through the mounting frame 51, and the cylinder telescopic end of the injection cylinder 5 contacts and abuts the injection needle tube 6 located above the injection port.

[0018] The lifting track grooves 411 include a plurality of groups arranged at intervals in the horizontal direction, and the fixing clips 48 on each group of the lifting track grooves 411 are distributed in the vertical direction to fix the injection needle tube 6 at different height positions.

[0019] The set of fixing clips 48 at the bottom is in an L-shaped structure for supporting the bottom end of the injection needle tube 6 , and the remaining sets of fixing clips 48 are in an arc-shaped structure for fixing the side wall of the injection needle tube 6 .

[0020] A protective cushion is provided on one side of the fixing clamp 48 close to the injection needle tube 6 .

[0021] The rotating assembly 2 includes a support base 21, a rotating rod 22 and a rotating drive motor. The support base 21 is fixed on the mass spectrometer body, the rotating rod 22 is rotatably inserted on the top surface of the support base 21, the rotating drive motor is used to drive the rotating rod 22 to rotate, and the sample turntable 1 is fixed on the top of the rotating rod 22.

[0022] 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 sample injection device for in-situ mass spectrometry, comprising a mass spectrometer body and a sample injection mechanism, characterized in that: The injection mechanism includes an injection turntable, a rotating component, an injection needle tube, a fixing component and an injection cylinder. The mass spectrometer body is provided with an injection port. The injection turntable is rotatably arranged above the injection port through the rotating component. A plurality of placement ports are circumferentially arranged on the injection turntable, and one of the placement ports is located directly above the injection port. A group of the injection needle tubes are movably inserted into each placement port and fixed by the fixing component. The fixing component includes a track rod, a lifting seat, a driving screw, a lifting drive motor, an X-axis electric telescopic rod, a U-shaped rod, a Y-axis electric telescopic rod and a fixing clamp. The rod wall of the track rod is provided with lifting track grooves in vertical directions. The lifting seat is slidably arranged on the notch of the lifting track groove. A driving screw that rotates in the horizontal direction is inserted in the groove, the lifting seat is provided with a through hole for the driving screw to pass through, and a nut that matches the thread of the driving screw is fixed in the through hole, and a lifting drive motor that drives the driving screw to rotate is provided at the bottom end of the track rod, and an X-axis electric telescopic rod is provided on the lifting seat, and a U-shaped rod is provided at the telescopic top end of the X-axis electric telescopic rod, and a Y-axis electric telescopic rod is provided at the top of the left and right sides of the U-shaped rod respectively, and the telescopic top ends of the two Y-axis electric telescopic rods are arranged facing each other and are both provided with a fixing clamp, and the injection cylinder is arranged above the injection turntable through a mounting frame, and the cylinder telescopic end of the injection cylinder contacts and abuts the injection needle tube located above the injection port.

2. A sample injection device for in-situ mass spectrometry according to claim 1, characterized in that: The lifting track grooves include a plurality of groups arranged at intervals along the horizontal direction, and the fixing clamps on each group of the lifting track grooves are distributed along the vertical direction for fixing the injection needle tubes at different height positions.

3. A sample injection device for in-situ mass spectrometry according to claim 2, characterized in that: The fixing clips of the group located at the bottom are in an L-shaped structure, and the fixing clips of the other groups are in an arc-shaped structure.

4. A sample injection device for in-situ mass spectrometry according to claim 2, characterized in that: A protective cushion is provided on one side of the fixing clamp close to the injection needle tube.

5. The sample injection device for in-situ mass spectrometry according to claim 1, characterized in that: The rotating assembly includes a support seat, a rotating rod and a rotating drive motor. The support seat is fixed on the mass spectrometer body, the rotating rod is rotatably inserted on the top surface of the support seat, the rotating drive motor is used to drive the rotating rod to rotate, and the injection turntable is fixed on the top of the rotating rod.

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