Mass spectrometer sampling device

Abstract

The utility model provides a mass spectrometer sampling device which comprises a lifting base arranged in a lifting mode, moving tracks connected to the two sides of the lifting base and a supporting frame movably arranged in the moving tracks, a needle cylinder containing groove is formed in the bottom of the supporting frame, a movable clamping block is arranged on the upper portion of the supporting frame, and a piston rod containing groove is formed in one side of the movable clamping block. The movable clamping block can ascend and descend along the supporting frame, so that when the sampling needle cylinder is placed on the supporting frame, the bottom of the sampling needle cylinder is placed in the needle cylinder containing groove, and a piston rod of the sampling needle cylinder is placed in the piston rod containing groove. A guide ring is connected to the bottom of the moving rail and is of a frustum structure, and the inner diameter of the upper end of the guide ring is smaller than that of the lower end of the guide ring. According to the utility model, the liquid sampling accuracy of the mass spectrometer is improved, and the sampling element can be conveniently and quickly replaced.

Description

Technical Field

[0001] This utility model relates to the field of mass spectrometers, and in particular to a mass spectrometer sampling device. Background Technology

[0002] A mass spectrometer, also known as a mass spectrometer, is an instrument used to separate and detect different isotopes. It works on the principle that charged particles can be deflected in an electromagnetic field, separating and detecting the composition of substances based on differences in the mass of atoms, molecules, or molecular fragments. Mass spectrometers are classified by application into isotope mass spectrometers, inorganic mass spectrometers, and organic mass spectrometers. They are also classified by resolution into high-resolution, medium-resolution, and low-resolution mass spectrometers, and by working principle into static and dynamic instruments. A significant aspect of the development of organic mass spectrometers is their integration with various coupled instruments (gas chromatography, liquid chromatography, thermal analysis, etc.).

[0003] Currently, when automatically sampling liquid samples, a sampling syringe is usually used to extract the liquid and then inject it into a designated sampling bottle. During this process, the needle of the sampling syringe needs to be accurately inserted into the sample bottle and the sampling bottle. Therefore, existing sample bottles and sampling bottles basically need to use a uniform size to ensure accurate sampling by the same equipment, making it difficult to accurately sample sample bottles and sampling bottles of different sizes. Utility Model Content

[0004] The purpose of this invention is to provide a mass spectrometer sampling device that improves the accuracy of liquid sampling by a mass spectrometer and facilitates rapid replacement of the sampling element.

[0005] To solve the above-mentioned technical problems, this utility model provides a mass spectrometer sampling device, including a lifting base that is raised and lowered, a moving track connected to both sides of the lifting base, and a support frame that is movably disposed in the moving track. The support frame has a syringe placement groove at the bottom and a movable locking block at the top. A piston rod placement groove is opened on one side of the movable locking block, and the movable locking block can be raised and lowered along the support frame so that when the sampling syringe is placed on the support frame, the bottom of the sampling syringe is placed in the syringe placement groove, and the piston rod of the sampling syringe is placed in the piston rod placement groove. A guide ring is connected to the bottom of the moving track. The guide ring is arranged in a frustum-shaped structure, and the inner diameter of the upper end of the guide ring is smaller than the inner diameter of the lower end.

[0006] Furthermore, a positioning plate is provided on the side of the support frame near the sampling syringe. The positioning plate is connected to a positioning block via a telescopic plate. The sampling syringe is provided with a positioning ring that matches the syringe placement groove in the circumferential direction. The positioning block and the syringe placement groove are respectively placed on both sides of the positioning ring. The telescopic plate has a first elastic element built in.

[0007] Furthermore, the telescopic plate has a lever on its outer side.

[0008] Furthermore, an avoidance groove is provided on one side of the syringe placement groove, and the needle of the sampling syringe matches the avoidance groove.

[0009] Furthermore, the movable card block has an opening on its side, and the piston rod of the sampling syringe is placed in the piston rod placement groove through the opening.

[0010] Furthermore, a drive unit is connected to the upper part of the support frame, and the output end of the drive unit is connected to the movable block, so that the drive unit drives the movable block to move up and down.

[0011] Furthermore, a telescopic rod is provided between the moving track and the guide ring, and the telescopic rod has a built-in second elastic element.

[0012] The beneficial effects of this utility model are as follows: When placing the sampling syringe, one end of the sampling syringe is placed in the syringe placement slot, and the end of the piston rod is engaged in the piston rod placement slot, so that the sampling syringe is placed stably. The sampling syringe is moved up and down by the support frame along the moving track. At the same time, due to the setting of the guide ring, after the sampling syringe is placed, the lifting seat drives the moving track and the guide ring to move down to the bottle mouth position of the sample bottle or sampling bottle, so that the guide ring contacts the bottle mouth position. The cone structure guides and positions the bottle mouth position, ensuring that bottle mouths of different sizes can be positioned by the guide ring. Then the support frame drives the needle of the sampling syringe to descend and pierce into the sample bottle or sampling bottle. At this time, the movable block moves up and down, and the piston rod can be driven by the movable block to take or release the sample. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a front view of the present invention.

[0015] Figure 3 This is a utility model Figure 2 Cross-sectional view along line AA.

[0016] Figure 4 This is a utility model Figure 3 A magnified view of a portion of point A in the middle.

[0017] Reference numerals: 1. Lifting seat; 2. Moving track; 3. Support frame; 4. Syringe placement slot; 5. Movable locking block; 6. Piston rod placement slot; 7. Sampling syringe; 8. Piston rod; 9. Guide ring; 10. Positioning plate; 11. Telescopic plate; 12. Positioning block; 13. Positioning ring; 14. First elastic element; 15. Paddle plate; 16. Clearance groove; 17. Opening; 18. Driving element; 19. Telescopic rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0019] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation of this utility model.

[0020] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0021] like Figures 1-4 The present invention provides a mass spectrometer sampling device, including a lifting base 1 with a lifting arrangement, a moving track 2 connected to both sides of the lifting base 1, and a support frame 3 movably arranged in the moving track 2. The support frame 3 has a syringe placement groove 4 at its bottom and a movable block 5 at its upper part. A piston rod placement groove 6 is opened on one side of the movable block 5, and the movable block 5 can be raised and lowered along the support frame 3 so that when the sampling syringe 7 is placed on the support frame 3, the bottom of the sampling syringe 7 is placed in the syringe placement groove 4, and the piston rod 8 of the sampling syringe 7 is placed in the piston rod placement groove 6. A guide ring 9 is connected to the bottom of the moving track 2. The guide ring 9 is arranged in a frustum structure, and the inner diameter of the upper end of the guide ring 9 is smaller than the inner diameter of the lower end.

[0022] When placing the sampling syringe 7, one end of the sampling syringe 7 is placed in the syringe placement slot 4, and the end of the piston rod 8 is engaged in the piston rod placement slot 6 to stabilize the sampling syringe 7. The sampling syringe 7 is then moved up and down by the support frame 3 along the moving track 2. Due to the setting of the guide ring 9, after the sampling syringe 7 is placed, the lifting seat 1 moves the moving track 2 and the guide ring 9 to the bottle mouth position of the sample bottle or sampling bottle, so that the guide ring 9 contacts the bottle mouth position. The cone structure guides and positions the bottle mouth position to ensure that bottle mouths of different sizes can be positioned by the guide ring 9. Then the support frame 3 moves the needle of the sampling syringe 7 down to pierce into the sample bottle or sampling bottle. At this time, the movable locking block 5 moves up and down, and the piston rod 8 can be driven by the movable locking block 5 to take or release the sample.

[0023] The lifting seat 1 is connected to the lifting electric rail, thereby enabling the lifting seat 1 to drive the moving rail 2 to move up and down; the moving rail 2 and the support seat move and cooperate with each other through the electric rail; the syringe placement groove 4 has an annular groove structure to ensure that the needle can pass through the position of the syringe placement groove 4.

[0024] Preferably, the support frame 3 is provided with a positioning plate 10 on the side near the sampling syringe 7. The positioning plate 10 is connected to a positioning block 12 through a telescopic plate 11. The sampling syringe 7 is provided with a positioning ring 13 that matches the syringe placement groove 4 in the circumferential direction. The positioning block 12 and the syringe placement groove 4 are respectively placed on both sides of the positioning ring 13. The telescopic plate 11 has a first elastic element 14 built in it.

[0025] Specifically, the first elastic element 14 pushes the telescopic plate 11, so that the positioning block 12 maintains the limiting effect on one side of the positioning ring 13. At the same time, it works with the syringe placement groove 4 to ensure that the positioning ring 13 on the outer periphery of the sampling syringe 7 is stably engaged in the syringe placement groove 4.

[0026] The first elastic element 14 adopts a spring structure.

[0027] Preferably, the telescopic plate 11 has a lever plate 15 on its outer side.

[0028] Specifically, when it is necessary to replace the sampling syringe 7, the telescopic plate 11 is pulled upward by the lever 15, so that the positioning block 12 moves upward and disengages from the position of the positioning ring 13, and the positioning ring 13 can be quickly removed from the syringe placement slot 4.

[0029] Preferably, a clearance groove 16 is provided on one side of the syringe placement groove 4, and the needle of the sampling syringe 7 is matched with the clearance groove 16.

[0030] Specifically, during the process of attaching the positioning ring 13 to the syringe placement slot 4, the clearance slot 16 allows the needle to pass through the clearance slot 16 into the syringe placement slot 4, thus avoiding interference between the needle and the support due to the needle being too long.

[0031] Preferably, the movable card block 5 has an opening 17 on its side, and the piston rod 8 of the sampling syringe 7 is placed in the piston rod placement groove 6 through the opening 17.

[0032] Specifically, when snapping the piston rod 8, simply snap one end of the piston rod 8 into the piston rod placement groove 6 from the opening 17 to quickly position the end of the piston rod 8, thus improving the overall ease of assembly and disassembly of the sampling syringe 7.

[0033] The movable locking block 5 is designed in a semi-circular shape to ensure smooth engagement of the piston rod 8 end.

[0034] Preferably, a drive unit 18 is connected to the upper part of the support frame 3, and the output end of the drive unit 18 is connected to the movable block 5 so that the drive unit 18 drives the movable block 5 to move up and down.

[0035] Specifically, the moving block 5 is raised and lowered by the drive component 18. Since the drive component 18 is set on the support frame 3, the support frame 3 can drive the drive component 18 to rise and lower synchronously to ensure the stability of the relative position between the piston rod 8 and the sampling syringe 7. The piston rod 8 is raised and lowered independently by the drive component 18, thereby stabilizing the sampling and release.

[0036] The drive component 18 can be a hydraulic cylinder, an electric push rod, or other similar structure.

[0037] Preferably, a telescopic rod 19 is provided between the moving track 2 and the guide ring 9, and the telescopic rod 19 has a second elastic element built in it.

[0038] Specifically, since the bottle opening heights of different bottles and sampling bottles may be different, and the positioning height of the guide ring 9 is also different when positioning different bottle opening sizes, the telescopic rod 19 can be used to adapt to different positioning heights after the guide ring 9 is positioned, so as to ensure the stability of sampling and placement.

[0039] The second elastic element adopts a spring structure.

[0040] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A mass spectrometer sampling device, characterized in that: The device includes a lifting seat (1) that is raised and lowered, a moving track (2) connected to both sides of the lifting seat (1), and a support frame (3) that is movably set in the moving track (2). The support frame (3) has a syringe placement groove (4) at the bottom and a movable block (5) at the top. A piston rod placement groove (6) is opened on one side of the movable block (5). The movable block (5) can be raised and lowered along the support frame (3) so that when the sampling syringe (7) is placed on the support frame (3), the bottom of the sampling syringe (7) is placed in the syringe placement groove (4) and the piston rod (8) of the sampling syringe is placed in the piston rod placement groove (6). A guide ring (9) is connected to the bottom of the moving track (2). The guide ring (9) is set in a frustum structure and the inner diameter of the upper end of the guide ring (9) is smaller than the inner diameter of the lower end.

2. The mass spectrometer sampling device according to claim 1, characterized in that: The support frame (3) is provided with a positioning plate (10) on the side near the sampling syringe (7). The positioning plate (10) is connected to a positioning block (12) through a telescopic plate (11). The sampling syringe (7) is provided with a positioning ring (13) that matches the syringe placement groove (4) in the circumferential direction. The positioning block (12) and the syringe placement groove (4) are respectively placed on both sides of the positioning ring (13). The telescopic plate (11) has a first elastic element (14) built in it.

3. The mass spectrometer sampling device according to claim 2, characterized in that: The telescopic plate (11) has a lever (15) on its outer side.

4. The mass spectrometer sampling device according to claim 1, characterized in that: A clearance groove (16) is provided on one side of the syringe placement groove (4), and the needle of the sampling syringe (7) is matched with the clearance groove (16).

5. The mass spectrometer sampling device according to claim 1, characterized in that: The movable card block (5) has an opening (17) on its side, and the piston rod (8) of the sampling syringe is placed in the piston rod placement groove (6) through the opening (17).

6. The mass spectrometer sampling device according to claim 1, characterized in that: The upper part of the support frame (3) is connected to a drive component (18), and the output end of the drive component (18) is connected to the movable block (5) so that the drive component (18) drives the movable block (5) to move up and down.

7. The mass spectrometer sampling device according to claim 1, characterized in that: A telescopic rod (19) is provided between the moving track (2) and the guide ring (9), and the telescopic rod (19) has a second elastic element built in it.

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