Program-controlled sample application device for ion source sample of thermal ionization mass spectrometer
By designing a limiting plate and pusher plate assembly in the ion source of the thermal ionization mass spectrometer, the problem of filament falling out was solved, ensuring stability. Furthermore, the dust clogging was solved by using a brush cleaning assembly, achieving stable and efficient operation of the device.
Patent Information
- Application Number
- CN202423277466.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In existing technologies, the filament lacks containment in thermal ionization mass spectrometers, making it prone to falling out, resulting in poor stability and affecting subsequent work.
A programmable spotting device for the ion source of a thermal ionization mass spectrometer was designed, comprising components such as a limiting plate, a push rod, a push plate, a clamping plate, and a spring. The push rod and push plate work together to achieve stable clamping and release of the filament, and a cylinder-driven brush cleans the air inlet to prevent dust blockage.
The stability of the filament is improved, preventing it from falling out and ensuring the stability of the spotting process. The cleaning components keep the air inlet clean, improving the practicality and heat dissipation of the device.
Smart Images
Figure CN223858127U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mass spectrometry analysis, and in particular to a sample-controlled spotting device for an ion source in a thermal ionization mass spectrometer. Background Technology
[0002] Thermal ionization mass spectrometry (TIMS), as a mass spectrometry analysis instrument, is widely used in geochemistry, nuclear industry, agriculture, medicine, environmental tracing, and other fields due to its high accuracy and precision in isotope ratio testing. Thermoionization ion sources were among the earliest ion sources applied to mass spectrometers. They are characterized by high ionization efficiency and low energy dispersion, making them very stable ion sources. Their coupling with magnetic mass spectrometry (MMS) is widely used in isotope ratio measurement and isotope tracing. In sample analysis, to ensure accurate analysis of nuclides, the collected sample is first chemically treated to become a solution, and then a solid sample is prepared through a dropping step. The nuclide to be analyzed is ionized by thermal ionization using an ion source. The generated ions are then extracted, accelerated, focused, and sent to the mass analyzer for mass spectrometry analysis via an ion transmission lens. Therefore, in the ion source preparation process, the spotting of the filament (evaporation zone) is one of the key factors affecting isotope ratio testing.
[0003] In the existing technology, when using a spotting machine, the filament is usually inserted into the socket on the top of the spotting machine and then it can be used. However, direct insertion lacks a limiting mechanism, and the filament is prone to falling out, reducing its stability and affecting subsequent work.
[0004] To address the above problems, a programmable sample spotting device for ion sources in thermal ionization mass spectrometry is proposed. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a programmable spotting device for ion source samples in a thermal ionization mass spectrometer, aiming to improve the problem in the prior art that the lack of filament restraint causes the filament to easily fall out, reducing its stability and affecting subsequent work.
[0006] To achieve the above objectives, this utility model adopts the following technical solution: a programmable spotting device for ion source samples in a thermal ionization mass spectrometer, comprising a controller, multiple air inlets on the right side of the controller, a cleaning component on the right side of each air inlet to prevent dust blockage, a wire installed at the rear of the controller, and a programmable spotting device installed at the other end of the wire, the programmable spotting device having multiple sockets on its top, filaments slidably connected inside the sockets, two of which have mounting plates installed on their outer sides, and the programmable spotting device having multiple sockets on its top. Two limiting plates are fixedly connected below the mounting plate. Push rods are slidably connected inside the two limiting plates. Push plates are fixedly connected to the opposite sides of the two push rods. Fixed plates are fixedly connected to the front and rear sides of the top of the programmable sample machine. Two sliding rods are fixedly connected to the opposite sides of the two fixed plates. A spring is sleeved on one side of the sliding rod. A moving block is slidably connected to the other side of the sliding rod. A clamping plate is fixedly connected to the end of the moving block away from the sliding rod. A connecting rod is provided between the push plate and the moving block. An air vent is opened on the rear side of the controller.
[0007] As a further description of the above technical solution:
[0008] The cleaning assembly includes a support plate, the left side of which is fixedly connected to the right side of the controller, a cylinder is fixedly connected to the rear side of the support plate, a fixing block is fixedly connected to the output end of the cylinder, a brush is fixedly connected to the bottom of the fixing block, and a connecting frame is provided between the brush and the support plate.
[0009] As a further description of the above technical solution:
[0010] A plug is located on the rear side of the controller and to the left of the power cord, a display screen is located on the front side of the controller, and multiple buttons are located on the front side of the controller and below the display screen.
[0011] As a further description of the above technical solution:
[0012] The bottom of the push plate is slidably connected to the top of the programmable point prototype.
[0013] As a further description of the above technical solution:
[0014] The outer side of the filament is positioned between the two clamping plates.
[0015] As a further description of the above technical solution:
[0016] One end of the spring is fixedly connected to the outside of the fixed plate, and the other end of the spring is fixedly connected to the outside of the moving block.
[0017] As a further description of the above technical solution:
[0018] One end of the connecting frame is rotatably connected to the outside of the brush, and the other end of the connecting frame is rotatably connected to the outside of the support plate.
[0019] As a further description of the above technical solution:
[0020] The brush abuts against the air inlet.
[0021] This utility model has the following beneficial effects:
[0022] 1. In this utility model, by pushing the push rod to move the push plate, the connecting rod will rotate, which in turn will cause the moving block to squeeze the spring. At this time, the clamping plate will open, and the filament can be taken out. The push rod will be released, and the moving block will be pushed back to its original position under the action of the spring. Then, the connecting rod will rotate to reset the push rod and the push plate, which will then cause the clamping plate to clamp the filament again. This avoids the problem of instability caused by direct insertion of the filament and improves the practicality of the device.
[0023] 2. In this utility model, the starting cylinder drives the fixed block and brush to move, which in turn drives the connecting frame to rotate, thereby driving the brush to move along the surface of the air inlet, thus cleaning the dust attached to the air inlet and preventing excessive dust accumulation from reducing the heat dissipation effect. Attached Figure Description
[0024] Figure 1 This is a perspective view of a sample programmable spotting device for an ion source of a thermal ionization mass spectrometer, as proposed in this utility model.
[0025] Figure 2 This is a schematic diagram of the gas outlet of a sample programmable spotting device for an ion source of a thermal ionization mass spectrometer, as proposed in this utility model.
[0026] Figure 3 This is a schematic diagram of the structure of a brush for a programmable spotting device for an ion source of a thermal ionization mass spectrometer, as proposed in this utility model.
[0027] Figure 4 This is a schematic diagram of the socket structure of a sample programmable spotting device for an ion source of a thermal ionization mass spectrometer, as proposed in this utility model.
[0028] Figure 5 This is a schematic diagram of the connecting rod for a sample programmable spotting device for an ion source of a thermal ionization mass spectrometer, as proposed in this utility model.
[0029] Figure 6 This invention provides a sample-controlled spotting device for an ion source in a thermal ionization mass spectrometer. Figure 6 for Figure 5 Enlarged view of point A in the middle.
[0030] Legend:
[0031] 1. Controller; 2. Air inlet; 3. Wire; 4. Programmable point sample machine; 5. Socket; 6. Filament; 7. Mounting plate; 8. Limit plate; 9. Push rod; 10. Push plate; 11. Fixing plate; 12. Slide rod; 13. Spring; 14. Moving block; 15. Connecting rod; 16. Clamping plate; 17. Support plate; 18. Cylinder; 19. Fixing block; 20. Brush; 21. Connecting frame; 22. Air outlet; 23. Plug; 24. Display screen; 25. Button; 26. Handle. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a programmable spotting device for ion source samples in a thermal ionization mass spectrometer, comprising a controller 1, multiple air inlets 2 on the right side of the controller 1, a cleaning component on the right side of each air inlet 2 to prevent dust blockage, a wire 3 mounted on the rear of the controller 1, and a programmable spotting device 4 mounted at the other end of the wire 3, multiple sockets 5 on the top of the programmable spotting device 4, filaments 6 slidably connected inside each socket 5, with mounting plates 7 mounted on the outer sides of two of the filaments 6, two limiting plates 8 fixedly connected to the top of the programmable spotting device 4 below the mounting plates 7, push rods 9 slidably connected inside each of the two limiting plates 8, push plates 10 fixedly connected to opposite sides of each of the two push rods 9, and fixing plates 11 fixedly connected to the front and rear sides of the top of the programmable spotting device 4. Two sliding rods 12 are fixedly connected to opposite sides of the two fixed plates 11. A spring 13 is sleeved on one side of the sliding rod 12. A moving block 14 is slidably connected to the other side of the sliding rod 12. A clamping plate 16 is fixedly connected to the end of the moving block 14 away from the sliding rod 12. A connecting rod 15 is provided between the push plate 10 and the moving block 14. An air vent 22 is provided on the rear side of the controller 1. A plug 23 is provided on the rear side of the controller 1 and to the left of the wire 3. A display screen 24 is provided on the front side of the controller 1. Multiple buttons 25 are provided on the front side of the controller 1 and below the display screen 24. The bottom of the push plate 10 is slidably connected to the top of the programmable point prototype 4. The outer side of the filament 6 is set between the two clamping plates 16. One end of the spring 13 is fixedly connected to the outside of the fixed plate 11, and the other end of the spring 13 is fixedly connected to the outside of the moving block 14.
[0034] Specifically, controller 1 is the brain of the entire device, responsible for receiving operating instructions and controlling the operation of various components, including the start and stop of the spotting operation. Air inlet 2 is used to introduce outside air, providing necessary cooling airflow to controller 1 to prevent overheating. Wire 3 connects the controller to the programmable spotting machine 4, transmitting power and control signals. The programmable spotting machine 4 is the core equipment for performing sample spotting, achieving accurate sample spotting through precise control of the filament's position and state. Insertion hole 5, located at the top of the programmable spotting machine 4, is used to insert the filament. Its design allows for stable insertion and positioning of the filament 6. The filament 6 is a key component in the sample spotting process; by heating the sample, it ionizes it, facilitating mass spectrometry analysis. Mounting plate 7 is used to fix the filament, ensuring its positional stability during spotting. Limiting plate 8 cooperates with push rod 9 and push plate 10 to limit the movement range of push rod 9, ensuring it moves along a predetermined path, thereby stably controlling the clamping and release of filament 6. Push rod 9 and push plate 10 can be manually or automatically controlled. Push plate 10 can move along... The top of the programmable spotting machine 4 slides, driving the connecting rod 15, which further controls the movement of the moving block 14 and the clamping plate 16 to clamp or release the filament 6. The components of the fixed plate 11, the sliding rod 12, the spring 13, and the moving block 14 constitute a spring reset mechanism to ensure that the filament 6 can be stably clamped when not in use and released by the action of the push plate 10 when in use. The elasticity of the spring 13 ensures the reset of the moving block 14. The clamping plate 16 is connected to the moving block 14 and is used to clamp or release the filament 6 to ensure the stability and safety of the filament 6 during the spotting process. The connecting rod 15 connects the push plate 10 and the moving block 14, converting the linear movement of the push plate 10 into the sliding of the moving block 14 to clamp and release the filament 6. The vent 22 is used to discharge the cooled air and maintain the airflow circulation inside the equipment. The plug 23 is used to connect the controller to the power supply to provide power. The display screen 24 and the button 25 are used to display the equipment status and receive operation instructions, so that the operator can monitor the equipment operation status and perform necessary operations.
[0035] Reference Figure 1 - Figure 3 The cleaning component includes a support plate 17. The left side of the support plate 17 is fixedly connected to the right side of the controller 1. A cylinder 18 is fixedly connected to the rear side of the support plate 17. A fixing block 19 is fixedly connected to the output end of the cylinder 18. A brush 20 is fixedly connected to the bottom of the fixing block 19. A connecting frame 21 is provided between the brush 20 and the support plate 17. One end of the connecting frame 21 is rotatably connected to the outside of the brush 20, and the other end of the connecting frame 21 is rotatably connected to the outside of the support plate 17. The brush 20 abuts against the air inlet 2.
[0036] Specifically, the support plate 17 is fixed to the right side of the controller 1, serving as the base of the cleaning assembly. It provides installation positions for components such as the cylinder 18, the fixing block 19, the brush 20, and the connecting frame 21, ensuring the stability and positioning accuracy of the entire cleaning assembly. The cylinder 18 serves as the power source for the cleaning assembly, and the linear motion of its output end is transmitted to the brush 20 through the fixing block 19, driving the brush 20 to move along the surface of the air inlet 2 to remove the attached dust. The fixing block 19 connects the output end of the cylinder 18 and the brush 20, transmitting the linear motion of the cylinder 18 to the brush 20. At the same time, the connecting frame 21 ensures that the brush 20 can move smoothly along the surface of the air inlet 2. The brush 20 directly contacts the surface of the air inlet, removing the attached dust with its soft bristles and keeping the air inlet clean. The abutting design between the brush 20 and the air inlet 2 ensures close contact during the cleaning process, improving cleaning efficiency. One end of the connecting bracket 21 is rotatably connected to the brush, and the other end is rotatably connected to the support plate 17. This design allows the brush 20 to move along the surface of the air inlet 2 under the driving force of the cylinder 18, ensuring that the brush 20 can cover the entire surface of the air inlet 2 while maintaining contact with the air inlet 2, thus improving the comprehensiveness and efficiency of cleaning.
[0037] Working principle: When the filament 6 needs to be installed, push the push rod 9 to move the push plate 10, which in turn drives the connecting rod 15 to rotate, thereby causing the moving block 14 to squeeze the spring 13. At this time, the clamping plate 16 opens, and the filament 6 is inserted into the socket 5. Release the push rod 9, and under the action of the spring 13, push the moving block 14 to reset. Then, drive the connecting rod 15 to rotate, causing the push rod 9 and the push plate 10 to reset, thereby causing the clamping plate 16 to clamp the filament 6, preventing it from accidentally falling off and improving its stability.
[0038] When the air inlet 2 next to the controller 1 is not cleaned for a long time, it will affect its heat dissipation effect. At this time, the cylinder 18 is started to move the fixed block 19 and the brush 20, which in turn drives the connecting frame 21 to rotate, thereby driving the brush 20 to move along the surface of the air inlet 2, thus cleaning the dust attached to the air inlet 2 and avoiding excessive dust accumulation, which would reduce the heat dissipation effect.
[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A sample programmable spotting device for an ion source of a thermal ionization mass spectrometer comprising a controller (1), characterized in that: The controller (1) is provided with a plurality of air inlets (2) on the right side, and a cleaning assembly is arranged on the right side of the air inlet (2), which is used to prevent the air inlet (2) from being blocked by dust, and an electric wire (3) is installed on the rear side of the controller (1), and a program-controlled point sample machine (4) is installed at the other end of the electric wire (3), a plurality of jacks (5) are arranged on the top of the program-controlled point sample machine (4), and lamp filaments (6) are slidably connected in the jacks (5), wherein two lamp filaments (6) are installed on the outer sides of the mounting plates (7), two limiting plates (8) are fixedly connected to the top of the program-controlled point sample machine (4) and below the mounting plates (7), and a push rod (9) is slidably connected in each of the limiting plates (8), a push plate (10) is fixedly connected to the opposite side of each of the push rods (9), fixed plates (11) are fixedly connected to the top of the program-controlled point sample machine (4) and on the front and rear sides, two slide rods (12) are fixedly connected to the opposite side of each of the fixed plates (11), springs (13) are sleeved on one side of the outer sides of the slide rods (12), moving blocks (14) are slidably connected to the other sides of the outer sides of the slide rods (12), clamping plates (16) are fixedly connected to one end of the moving blocks (14) away from the slide rods (12), and a connecting rod (15) is arranged between the push plate (10) and the moving block (14), and an air outlet (22) is arranged on the rear side of the controller (1).
2. The sample programmable spotting device for ion source of thermal ionization mass spectrometer according to claim 1, characterized in that: The cleaning assembly comprises a supporting plate (17), which is fixedly connected to the right side of the controller (1), a gas cylinder (18) is fixedly connected to the rear side of the supporting plate (17), a fixed block (19) is fixedly connected to the output end of the gas cylinder (18), a brush (20) is fixedly connected to the bottom of the fixed block (19), and a connecting frame (21) is arranged between the brush (20) and the supporting plate (17).
3. The apparatus for sample programmable spotting in ion source of thermal ionization mass spectrometer according to claim 1, characterized in that: A plug (23) is arranged on the rear side of the controller (1) and on the left side of the electric wire (3), a display screen (24) is arranged on the front side of the controller (1), and a plurality of buttons (25) are arranged on the front side of the controller (1) and below the display screen (24).
4. The apparatus for sample programmable spotting in ion source of thermal ionization mass spectrometer according to claim 1, characterized in that: The push plate (10) is slidably connected to the top of the program-controlled point sample machine (4).
5. The apparatus for sample programmable spotting in an ion source of a thermal ionization mass spectrometer of claim 1, wherein: The lamp filaments (6) are arranged between the two clamping plates (16).
6. A sample programmable spotting device for ion source of thermal ionization mass spectrometer according to claim 1, characterized in that: One end of the spring (13) is fixedly connected to the outer side of the fixed plate (11), and the other end of the spring (13) is fixedly connected to the outer side of the moving block (14).
7. A sample programmable spotting device for ion source of thermal ionization mass spectrometer according to claim 2, characterized in that: One end of the connecting frame (21) is rotatably connected to the outer side of the brush (20), and the other end of the connecting frame (21) is rotatably connected to the outer side of the supporting plate (17).
8. A sample programmable spotting device for ion source of thermal ionization mass spectrometer according to claim 2, characterized in that: The brush (20) abuts against the air inlet (2).