Mass spectrometer dust blocking device and mass spectrometer analysis system
By introducing a dust collection tube and a gas supply device into the mass spectrometer, the problem of dust entering the mass spectrometer was solved, dust isolation and gas flow stability were achieved, and the normal operation of the mass spectrometer was ensured.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-04-07
AI Technical Summary
When the mass spectrometer is operating in a high-temperature environment, dust enters the exhaust tube through the heat dissipation holes and accumulates, affecting the performance of the instrument.
A dust barrier device for a mass spectrometer was designed, including a dust collection tube and a gas supply device. The dust collection tube is installed inside the exhaust pipe to collect dust and prevent it from entering the extraction pipe and the main unit. The gas supply device controls the gas flow through parallel gas tanks and valves.
It effectively isolates dust, preventing it from entering the main unit and maintaining the stability of the mass spectrometer's performance. The height of the dust collection tube is adjustable to prevent dust accumulation, and the gas supply device ensures stable gas flow.
Smart Images
Figure CN224095766U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of laboratory equipment technology, and in particular to a dust barrier device for a mass spectrometer and a mass spectrometer analysis system. Background Technology
[0002] Inductively coupled plasma mass spectrometry (ICP-MS) is a highly sensitive analytical technique primarily used to determine trace elements and isotope ratios. It consists of a plasma generator, nebulizer, torch, quadrupole mass spectrometer, and a fast-channel electron multiplier tube (called the ion detector or collector). The working principle of ICP-MS is as follows: a solution sample is nebulized into a plasma source, vaporized at high temperature, and dissociated into ionized gas. These ions pass through a sampling cone into a low-vacuum environment to form a molecular beam, which is then separated by mass separation in the quadrupole mass spectrometer before finally reaching the ion detector.
[0003] Mass spectrometers operate in a high-temperature environment, and a suction pipe is typically used to connect the mass spectrometer's exhaust pipe to an exhaust fan for heat dissipation. The suction pipe is a corrugated pipe, and a heat dissipation hole is located on one side of the mass spectrometer to supply cool air. This cool air carries external dust into the corrugated pipe, where it accumulates. The accumulated dust then falls into the main unit of the mass spectrometer, affecting its performance. Summary of the Invention
[0004] In view of this, and to address the above-mentioned shortcomings, it is necessary to propose a dust blocking device for mass spectrometers.
[0005] It is also necessary to propose a mass spectrometer analysis system.
[0006] A dust blocking device for a mass spectrometer includes a mass spectrometer and a dust collection tube. The mass spectrometer includes a main unit, an exhaust pipe, and an extraction pipe. The main unit has a horizontal outer top surface with an exhaust port. The exhaust pipe is vertically placed, with its lower end connected to the exhaust port and its upper end suspended. The dust collection tube is vertically placed on the outer top surface of the main unit and encapsulated within the exhaust pipe. The dust collection tube can be extended or shortened vertically. A connecting port is provided on the side wall of the dust collection tube. One end of the extraction pipe is connected to the connecting port, and the other end of the dust collection tube is connected to an exhaust fan.
[0007] Preferably, the dust collection pipe includes an upper pipe and a lower pipe, the lower pipe being nested within the upper pipe, and the interface being located on the lower pipe.
[0008] Preferably, the horizontal height of the interface is lower than the horizontal height of the upper end face of the exhaust pipe.
[0009] Preferably, the inner upper end face of the upper tube is tapered.
[0010] Preferably, the inner upper end face of the upper tube is a smooth surface.
[0011] Preferably, the air extraction pipe is a corrugated pipe.
[0012] A mass spectrometer analysis system includes a gas supply device and a mass spectrometer dust barrier device. The gas supply device includes two gas tanks, which are connected in parallel with the main unit.
[0013] Preferably, the gas supply device includes a shut-off valve and a check valve, with a shut-off valve and a check valve connected in series at the outlet of any gas tank.
[0014] Preferably, the gas supply device includes a storage tank, which includes a base plate and an overlapping plate, one side of which is hinged to the base plate.
[0015] Preferably, the storage tank includes a first spring, one end of which is connected to the base plate, and the other end of which is connected to the overlapping plate.
[0016] Beneficial effects: The addition of a dust collection pipe causes dust to accumulate on its inner wall. A small amount of dust may enter the exhaust pipe, which is then separated from the exhaust pipe, preventing dust from falling into the exhaust pipe and instead entering the main unit. The height of the dust collection pipe is adjustable, ensuring that the dust rises below the upper inner surface of the pipe, preventing dust from accumulating there and falling into the exhaust pipe. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the dust barrier device for the mass spectrometer.
[0018] Figure 2 This is a schematic diagram of the structure of the first embodiment of the gas supply device.
[0019] Figure 3 This is a schematic diagram of the second embodiment of the gas supply device.
[0020] Figure 4 This is a schematic diagram of the structure of the assist component.
[0021] In the diagram: barrier device 10, mass spectrometer 11, main unit 111, exhaust pipe 112, extraction pipe 113, heat dissipation hole 114, dust collection pipe 12, interface 121, upper pipe 122, lower pipe 123, gas supply device 20, gas tank 21, shut-off valve 22, one-way valve 23, storage tank 24, base plate 241, overlapping plate 242, first spring 243, assist component 244, sliding plate 2441, connecting rod 2442, slider 2443, second spring 2444. Detailed Implementation
[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] See Figure 1 This utility model provides a dust blocking device 10 for a mass spectrometer, including a mass spectrometer 11 and a dust collection tube 12. The mass spectrometer 11 includes a main unit 111, an exhaust pipe 112, and an extraction pipe 113. The main unit 111 has a horizontal outer top surface with an exhaust port. The exhaust pipe 112 is placed vertically, with its lower end connected to the exhaust port and its upper end suspended. The dust collection tube 12 is placed vertically on the outer top surface of the main unit 111 and is encapsulated within the exhaust pipe 112. The dust collection tube 12 can be extended or shortened in the vertical direction. The side wall of the dust collection tube 12 is provided with a connection interface 121. One end of the extraction pipe 113 is connected to the connection interface 121, and the other end of the dust collection tube 12 is connected to an exhaust fan.
[0024] For example, the dust collection pipe 12 can be a square pipe or a round pipe. The upper port of the dust collection pipe 12 is closed, and the lower port of the dust collection pipe 12 can be open or closed. This application does not impose any restrictions. The upper port of the exhaust pipe 112 is directly opposite the inner upper end face of the dust collection pipe 12. The dust collection pipe 12 is connected to the exhaust pipe 113 through the interface 121. It is preferable that the dust collection pipe 12 and the exhaust pipe are coaxial.
[0025] The barrier device 10 is specifically designed for the 7800ICP-MS mass spectrometer 11. Dust-laden gas inside the main unit 111 rises from the upper port of the exhaust pipe 112 and enters the inner cavity of the dust collection pipe 12. Some dust-laden gas enters the main unit 111 from the outside through the heat dissipation hole 114, which cools the main unit 111. Under the suction force of the exhaust fan, the dust descends, enters the exhaust pipe 113 through the interface 121, and is then discharged.
[0026] Beneficial effects: The addition of a dust collection pipe 12 causes dust to accumulate on its inner wall. A small amount of dust enters the exhaust pipe 113, which is isolated from the exhaust pipe by the dust collection pipe 12. Dust cannot fall from the exhaust pipe 113 into the exhaust pipe but instead enters the main unit 111. The height of the dust collection pipe 12 is adjustable, ensuring that the dust rises below the upper inner surface of the pipe, preventing dust from accumulating on this surface and thus preventing it from falling into the exhaust pipe.
[0027] See Figure 1 Furthermore, the dust collection pipe 12 includes an upper pipe 122 and a lower pipe 123, with the lower pipe 123 nested in the upper pipe 122, and the interface 121 located on the lower pipe 123.
[0028] For example, the upper tube 122 can also be nested within the lower tube 123. After the upper tube 122 and the lower tube 123 are extended or shortened, they are relatively fixed by a locking structure. For example, the locking structure specifically has a vertical row of through holes on the annular wall of the upper tube 122 and a vertical row of non-through holes on the annular wall of the lower tube 123. A pin passes through the through holes and is inserted into the non-through holes to fix the upper tube 122 and the lower tube 123 relatively.
[0029] See Figure 1 Furthermore, the horizontal height of the interface 121 is lower than the horizontal height of the upper end face of the exhaust pipe 112.
[0030] See Figure 1 Furthermore, the inner upper end face of the upper tube 122 is conical.
[0031] See Figure 1 Furthermore, the inner upper end face of the upper tube 122 is a smooth surface.
[0032] For example, with the cone apex of the inner upper end face of the upper pipe 122 facing upward, the water condensed on the inner upper end face of the upper pipe 122 will flow along the inner upper end face of the upper pipe 122 to the inner wall of the upper pipe 122, and will not fall into the exhaust pipe from the inner upper end face of the upper pipe 122.
[0033] See Figure 1 Furthermore, the exhaust pipe 113 is a corrugated pipe.
[0034] See Figure 2 This utility model provides a mass spectrometer analysis system, including a gas supply device 20 and a mass spectrometer dust blocking device 10. The gas supply device 20 includes two gas tanks 21, which are connected in parallel with the main unit 111.
[0035] See Figure 2 Furthermore, the gas supply device 20 includes a shut-off valve 22 and a check valve 23, with a shut-off valve 22 and a check valve 23 connected in series at the outlet of any gas tank 21.
[0036] The one-way valve 23 prevents gas from flowing from the fully pressurized gas tank 21 into the underpressurized gas tank 21.
[0037] See Figure 2 Furthermore, the gas supply device 20 includes a storage tank 24, which includes a base plate 241 and an overlapping plate 242, with one side of the overlapping plate 242 hinged to the base plate 241.
[0038] The other side of the overlapping plate 242 can rotate relative to the base plate 241. When the overlapping plate 242 is placed vertically, it is folded up. When the overlapping plate 242 is horizontal, it serves as a slide for the gas canister 21 to be inserted into the base plate 241.
[0039] See Figure 2 Furthermore, the storage tank 24 includes a first spring 243, one end of which is connected to the base plate 241, and the other end of which is connected to the overlapping plate 242.
[0040] When the overlapping plate 242 is horizontal, the first spring 243 is in an energy storage state. It can be leveled manually by the staff. The staff steps on the overlapping plate 242 and transfers the gas tank 21 onto the overlapping plate 242. With the help of the energy stored in the first spring 243, the overlapping plate 242 flips, helping the staff to move the gas tank 21 from the ground to the upper surface of the base plate 241 and put the gas tank 21 into the storage tank cabinet 24. The overlapping plate 242 can also help to press the gas tank 21 and fix the gas tank 21 relative to the storage tank cabinet 24.
[0041] See Figure 3 and Figure 4 In one embodiment, the storage tank 24 includes a base plate 241 and an assistive assembly 244. The assistive assembly 244 includes a sliding plate 2441, a connecting rod 2442, a slider 2443, and a second spring 2444. The base plate 241 has two U-shaped grooves, and a sliding plate 2441 is installed in each groove. The sliding plate 2441 moves vertically up and down along the groove. A slider 2443 is installed on each sliding plate 2441 and moves horizontally along the sliding plate 2441. The center of the connecting rod 2442 is rotatably connected to the base plate 241. One end of the connecting rod 2442 is rotatably connected to one slider 2443, and the other end of the connecting rod 2442 is rotatably connected to another slider 2443. One end of the second spring 2444 is connected to the base plate 241, and the other end of the second spring 2444 is connected to the connecting rod 2442. Preferably, there are two assistive assemblies 244, which are located on both sides of the base plate 241. For example, the left slide 2441 is in a low position, the right slide 2441 is in a high position, the second spring 2444 is in an energy storage state, and the right slide 2441 is supported by a pad. The gas tank 21 is rolled onto the left slide 2441. The pad is removed, and the worker stands on the right slide 2441 and uses his body weight to lift the gas tank 21 and then roll it onto the upper surface of the base plate 241. If his own weight is insufficient, the energy stored in the second spring 2444 can help lift the gas tank 21.
[0042] The modules or units in the device of this utility model embodiment can be merged, divided, or deleted according to actual needs.
[0043] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.
Claims
1. A dust barrier device for a mass spectrometer, characterized in that: The device includes a mass spectrometer and a dust collection tube. The mass spectrometer includes a main unit, an exhaust pipe, and a suction pipe. The main unit has a horizontal outer top surface with an exhaust port. The exhaust pipe is vertically placed, with its lower end connected to the exhaust port and its upper end suspended. The dust collection tube is vertically placed on the outer top surface of the main unit and is encapsulated within the exhaust pipe. The dust collection tube can be extended or shortened vertically. The side wall of the dust collection tube has a connecting interface. One end of the suction pipe is connected to the connecting interface, and the other end of the dust collection tube is connected to an exhaust fan.
2. The mass spectrometer dust blocking device as described in claim 1, characterized in that: The dust collection pipe includes an upper pipe and a lower pipe, with the lower pipe nested inside the upper pipe, and the interface located on the lower pipe.
3. The mass spectrometer dust blocking device as described in claim 2, characterized in that: The horizontal height of the interface is lower than the horizontal height of the upper end face of the exhaust pipe.
4. The mass spectrometer dust blocking device as described in claim 2, characterized in that: The inner upper end face of the upper tube is tapered.
5. The mass spectrometer dust blocking device as described in claim 4, characterized in that: The inner upper end face of the upper tube is a smooth surface.
6. The mass spectrometer dust blocking device as described in claim 1, characterized in that: The extraction pipe is a corrugated pipe.
7. A mass spectrometer analysis system, characterized in that: The device includes a gas supply device and a dust barrier device for a mass spectrometer as described in claim 1. The gas supply device includes two gas tanks, which are connected in parallel with the main unit.
8. The mass spectrometer analysis system as described in claim 7, characterized in that: The gas supply device includes a shut-off valve and a check valve, with a shut-off valve and a check valve connected in series at the outlet of any gas tank.
9. The mass spectrometer analysis system as described in claim 7, characterized in that: The gas supply device includes a storage tank, which includes a base plate and an overlapping plate, one side of which is hinged to the base plate.
10. The mass spectrometer analysis system as described in claim 9, characterized in that: The storage tank includes a first spring, one end of which is connected to the base plate, and the other end of which is connected to the overlapping plate.