A portable magnetic field enhanced ion mobility spectrometer

Abstract

The present invention relates to the field of gas detection technology, specifically to a portable magnetic field enhanced ion migration spectrometer, including an ion migration spectrometer, a sampling port for gas to enter is fixedly connected to the top of the ion migration spectrometer, a sampling tube connected to the sampling port is spirally arranged inside the ion migration spectrometer, and an ionization shell is fixedly connected to one end of the sampling tube away from the sampling port, a migration tube is arranged on one side of the ionization shell, an electromagnetic coil that can be energized is evenly wound on the outer surface of the migration tube, a handle is arranged on one side of the ion migration spectrometer, a cavity is opened at the bottom of the ion migration spectrometer, a vehicle bridge is arranged in the cavity, and universal rollers are arranged at both ends of the vehicle bridge. The electromagnetic coil that can be energized is evenly wound on the outer surface of the migration tube, so that a uniform electric field and magnetic field can be formed in the migration area, and the magnetic field strength can be conveniently adjusted by regulating the voltage passed into the electromagnetic coil, thereby realizing fine regulation of the ion migration path and separation effect.

Description

Technical Field

[0001] The invention relates to the technical field of gas detection, in particular to a portable magnetic field enhanced ion mobility spectrometer. Background Art

[0002] Ion mobility spectrometer belongs to the field of instrument technology. Its main application objects include important high-end equipment in chemical plants, chemical laboratories, military environment gas composition detection, drug testing and other fields. Ion mobility spectrometer can effectively identify multiple composite gases at the same time by analyzing the composition and concentration of the gas. The main principle of ion mobility spectrometer is to characterize the composition and concentration of the gas through the dark current mode, so as to realize gas detection.

[0003] For example, the patent application with the prior art announcement number CN115274396B provides a portable magnetic field enhanced ion migration spectrometer and its gas component detection method. The ion migration spectrometer includes a needle tip-plate electrode discharge structure composed of a relatively arranged probe and a conductive plate, and an enhanced magnetic field between the needle tip-plate electrode discharge structure. In this application, the current display unit receives the output dark current of the conductive plate in series, and detects the composition and concentration of the gas according to the modal characterization of the dark current. This application first proposed to control the ion migration time by magnetic field enhancement to adjust the waveform to a mode suitable for detection by the current display unit and the operation recognition unit, thereby realizing the detection of gas concentration by gas discharge waveform for the first time. The existing detection algorithm can only achieve a detection accuracy of 30%, and even through the deep learning 1cnn algorithm, it can only achieve an accuracy of 50%. However, this application can achieve an accuracy of 70%-90% through magnetic field coupling enhancement.

[0004] The existing magnetic field coupling enhancement technology significantly improves the detection accuracy of the ion mobility spectrometer by enhancing the separation effect of ions during the migration process. However, in practical applications, although the detection performance has been improved, the traditionally designed ion mobility spectrometer often lacks portability considerations, especially in applications where frequent small-distance movement is required. For example, in outdoor environmental monitoring tasks, researchers may need to carry an ion mobility spectrometer to different locations for rapid detection, which will not only increase the difficulty of carrying and transportation, but may also limit its ability to respond quickly in complex terrain or emergency situations. In addition, for ion mobility spectrometers that need to be frequently moved or shared between different laboratories, the lack of portability will also increase the user's operating burden and cost. To this end, the present application proposes a portable magnetic field-enhanced ion mobility spectrometer. Summary of the invention

[0005] The object of the present invention is to provide a portable magnetic field enhanced ion mobility spectrometer to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a portable magnetic field enhanced ion migration spectrometer, comprising an ion migration spectrometer, a sampling port for gas entry is fixedly connected to the top of the ion migration spectrometer, a sampling tube connected to the sampling port is spirally arranged inside the ion migration spectrometer, and an ionization shell is fixedly connected to one end of the sampling tube away from the sampling port, a migration tube is arranged on one side of the ionization shell, an electromagnetic coil that can be energized is evenly wound on the outer surface of the migration tube, a handle is arranged on one side of the ion migration spectrometer, a cavity is opened at the bottom of the ion migration spectrometer, a vehicle bridge is arranged in the cavity, and universal rollers are arranged at both ends of the vehicle bridge, a transmission slide plate that can contact the vehicle bridge is arranged inside the ion migration spectrometer, a power assembly for driving the transmission slide plate to move is arranged at one end of the handle, a plurality of fixed suction cups for fixing the ion migration spectrometer are evenly arranged at the bottom of the ion migration spectrometer, and an exhaust assembly for sucking air from the plurality of fixed suction cups is arranged at the bottom of the transmission slide plate.

[0007] Preferably, the power assembly includes a support fixedly connected to one side of the ion migration spectrometer, and the support is internally rotatably connected to a rotating shaft, the outer surface of the rotating shaft is sleeved with a torsion spring for self-reset, the outer surface of the rotating shaft is fixedly connected to a connecting handle fixedly connected to the handle, the middle end of the rotating shaft is fixedly connected to a rotating handle, the top of the transmission slide is rotatably connected to the transmission handle, the top of the transmission handle is rotatably connected to a rotating seat, and the top of the rotating seat is rotatably connected to a connecting plate rotatably connected to the bottom of the rotating handle.

[0008] Preferably, the ion migration spectrometer is internally rotatably connected to an auxiliary handle, the top of the auxiliary handle is rotatably connected to the inside of a rotating seat, a slide groove is provided inside the ion migration spectrometer for sliding connection of a transmission slide, a fixing frame is fixedly connected inside the slide groove, and a return spring is commonly connected between the fixing frame and the transmission slide.

[0009] Preferably, the cavity of the ion migration spectrometer is fixedly connected to a plurality of sleeves, the bottoms of the plurality of sleeves are slidably connected to piston rods adapted thereto, and the bottoms of the plurality of piston rods are commonly fixedly connected to the top of the axle, the outer surfaces of the plurality of piston rods are sleeved with compression springs for resetting the piston rods, and both ends of the axle are rotatably connected to connecting rods fixedly connected to the universal rollers.

[0010] Preferably, a plurality of wind blades are evenly arranged on the outer surface of the universal roller, and an air pipe is connected to one side of the sleeve, and an air outlet end of the air pipe extends above the plurality of wind blades.

[0011] Preferably, the vacuum assembly includes a suction shell opened at the bottom of the transmission slide, and the suction shell is connected to the fixed suction cup, and a straight cylindrical groove connected to the suction shell is opened at the bottom of the transmission slide, and a piston adapted to it is arranged inside the straight cylindrical groove.

[0012] Preferably, a connecting frame is fixedly connected inside the ion mobility spectrometer, and a straight rod fixedly connected to the piston is fixedly connected to one side of the connecting frame.

[0013] Preferably, a bracket is fixedly connected inside the straight-cylindrical groove, a rotating rod is rotatably connected inside the bracket, and a plurality of turbine blades are fixedly connected to the outer surface of the rotating rod and located on both sides of the bracket.

[0014] Preferably, an ion gate is fixedly connected inside the ionization shell.

[0015] Preferably, a Faraday disk is fixedly connected to a side of the migration tube away from the ionization shell.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The timing and quantity of ions entering the migration zone can be precisely controlled by setting the ion gate. The electromagnetic coil that can be evenly wound on the outer surface of the migration tube can form a uniform electric field and magnetic field in the migration zone. By adjusting the voltage passed into the electromagnetic coil, the magnetic field strength can be easily adjusted, thereby achieving fine control of the ion migration path and separation effect. Under the joint action of the electric field and magnetic field, ions are efficiently separated in the migration zone. This separation method not only improves the resolution of the analysis, but also enables different types of ions to be clearly distinguished, providing strong support for subsequent qualitative and quantitative analysis. The Radius disk, as an ion collector, can accurately measure the number of ions that arrive after passing through the migration zone.

[0018] 2. By pulling the handle, the device can be quickly converted from a fixed state to a mobile state, and vice versa. This conversion is not only fast and simple, but also greatly improves the flexibility and portability of the device. The combination of multiple sleeves and piston rods, combined with the use of compression springs, not only enhances the support strength of the universal roller for the device, but also plays a certain role in shock absorption. This makes the device more stable when moving or placing, and reduces the error or damage that may be caused by vibration. When the device is converted from a mobile state to a fixed state, the gas in the sleeve will be ejected through the air pipe to drive the universal roller to rotate. In this process, the brush on the outside of the universal roller will clean the dust and impurities on its outer surface, realizing the automatic cleaning function. The movement of the transmission slide not only drives the up and down movement of the axle, but also stores and releases energy by compressing and releasing the reset spring; while the gas in the sleeve drives the universal roller to rotate, it also realizes the cleaning of the universal roller.

[0019] 3. The fixed suction cup can generate suction when the ion mobility spectrometer is stationary, and the device is firmly fixed on the ground. This fixing method is more reliable than relying solely on the friction generated by the device's own gravity, and effectively prevents the device from sliding or moving on uneven or smooth surfaces. When the transmission slide moves, the suction component will automatically work to extract gas from the fixed suction cup to form a negative pressure, thereby enhancing the adsorption force of the fixed suction cup. On the contrary, when the transmission slide is reset, the gas in the fixed suction cup is released, and the device can easily switch from a fixed state to a mobile state. This automatic fixing and release mechanism greatly improves the convenience and operability of the device. Through the design of the turbine blades and the rotating rod, the airflow can drive the turbine blades to rotate when passing through the straight groove, and then drive the rotating rod to rotate. This rotational motion not only increases the air flow, but also improves the extraction efficiency, so that the fixed suction cup can form a negative pressure faster and firmly fix the device. The design of the entire fixing and moving mechanism is very coordinated, and the cooperation between the various components is close and seamless. For example, the movement of the transmission slide not only drives the folding and lowering of the universal roller, but also realizes the fixing and release of the fixed suction cup through the suction component. This design not only improves the overall performance of the equipment, but also makes the operation process smoother and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the explosion structure of the present invention;

[0022] Figure 3 is a schematic diagram of the cross-sectional structure of the ion mobility spectrometer of the present invention;

[0023] Figure 4 Schematic diagram of the structure of the ion mobility spectrometer in the present invention when viewed from above;

[0024] Figure 5 It is a structural schematic diagram of the transmission slide plate in the present invention;

[0025] Figure 6 For the present invention Figure 5 A schematic diagram of the structure enlargement in the middle;

[0026] Figure 7 It is a schematic diagram of the structure of removing the ion mobility spectrometer in the present invention;

[0027] Figure 8 It is a structural schematic diagram of the universal roller in the present invention;

[0028] Fig. 9 It is a schematic diagram of the cross-sectional structure of the transmission slide plate in the present invention;

[0029] Fig.10 For the present invention Fig. 9A magnified schematic diagram of the structure at B in the middle;

[0030] Fig.11 It is a structural schematic diagram of the air extraction component in the present invention;

[0031] Fig.12 For the present invention Fig.11 Enlarged schematic diagram of the structure at point C in the middle.

[0032] In the figure: 100, ion migration spectrometer; 101, injection tube; 102, ionization shell; 103, ion gate; 104, migration tube; 105, electromagnetic coil; 106, injection port; 200, handle; 201, support; 202, rotating shaft; 203, connecting handle; 204, transmission slide; 205, rotating handle; 206, connecting plate; 207, rotating seat; 208, auxiliary handle; 209, transmission handle; 210, fixed Frame; 211, slide; 212, return spring; 300, fixed suction cup; 301, suction shell; 302, straight groove; 303, straight rod; 304, rotating rod; 305, connecting frame; 306, piston; 307, bracket; 308, turbine blade; 400, universal roller; 401, axle; 402, connecting rod; 403, sleeve; 404, piston rod; 405, compression spring; 406, air pipe; 407, wind blade. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figure 1 , Figure 2 as well as Figure 3The present invention provides a technical solution: a portable magnetic field enhanced ion mobility spectrometer, comprising an ion mobility spectrometer 100, a sampling port 106 for gas to enter is fixedly connected to the top of the ion mobility spectrometer 100, a sampling tube 101 connected to the sampling port 106 is spirally arranged inside the ion mobility spectrometer 100, the sampling tube 101 is responsible for introducing the sample to be tested into the instrument, and comprises a sampling port, a sampling needle, a gas control system, etc., for accurately controlling the injection amount and injection speed of the sample, and an ionization shell 102 is fixedly connected to one end of the sampling tube 101 away from the sampling port 106, in which the sample molecules are ionized into ions, and one end of the ionization shell 102 A migration tube 104 is arranged on the side, and an electromagnetic coil 105 that can be energized is evenly wound on the outer surface of the migration tube 104. The cooperation between the migration tube 104 and the electromagnetic coil 105 ensures that a uniform electric field and magnetic field are set in the migration area. The ions are separated under the push of the electric field force and the deflection of the magnetic field force. The magnetic field strength can be adjusted by regulating the voltage passed into the electromagnetic coil 105. An ion gate 103 is fixedly connected to the inside of the ionization shell 102. The ion gate 103 is used to control the timing and number of ions entering the migration area. A Faraday disk is fixedly connected to the side of the migration tube 104 away from the ionization shell 102. The Faraday disk is used to collect and measure ions arriving after passing through the migration area.

[0035] Specifically, the sample to be tested is introduced into the injection port 106 in the form of steam or particles. The sample passes through the injection tube 101, the steam or particles pass through a semi-permeable membrane to filter out impurities such as smoke, inorganic molecules and water molecules, and then enters the ionization shell 102 to be ionized into ions. Then, the sample enters the migration tube 104 through the ion gate 103, and the electromagnetic coil 105 is energized at the same time, so that the ionized ions migrate in a specific direction under the action of the electric field.

[0036] In summary, the timing and quantity of ions entering the migration zone can be precisely controlled by setting the ion gate 103, and a uniform electric field and magnetic field can be formed in the migration zone by the energized electromagnetic coil 105 evenly wound on the outer surface of the migration tube 104. By adjusting the voltage passed into the electromagnetic coil, the magnetic field strength can be conveniently adjusted, thereby achieving fine control of the ion migration path and separation effect. Under the joint action of the electric field and the magnetic field, the ions are efficiently separated in the migration zone. This separation method not only improves the resolution of the analysis, but also enables different types of ions to be clearly distinguished, providing strong support for subsequent qualitative and quantitative analysis. The Radius disk, as an ion collector, can accurately measure the number of ions arriving after passing through the migration zone.

[0037] Example 2: Please refer to Figure 4 , Figure 5 as well as Figure 6The present invention also provides a technical solution, which is different from the technical solution of the first embodiment: a portable magnetic field enhanced ion mobility spectrometer, a handle 200 is provided on one side of the ion mobility spectrometer 100, a cavity is opened at the bottom of the ion mobility spectrometer 100, a vehicle bridge 401 is provided in the cavity, and universal rollers 400 are provided at both ends of the vehicle bridge 401. The universal rollers 400 can be used to support the ion mobility spectrometer 100 for facilitating short-distance transportation of the ion mobility spectrometer 100, and a transmission slide 204 that can contact the vehicle bridge 401 is provided inside the ion mobility spectrometer 100, and a power component that drives the transmission slide 204 to move is provided at one end of the handle 200, and the power component drives the transmission slide 204 to move to realize the lifting and lowering of the universal roller 400, so that it can be used and displayed when needed.

[0038] Furthermore, to facilitate the lifting and lowering of the universal roller 400, the power component includes a support 201 fixedly connected to one side of the ion mobility spectrometer 100, and the support 201 is internally rotatably connected to a rotating shaft 202, the outer surface of the rotating shaft 202 is sleeved with a torsion spring for its own reset, the outer surface of the rotating shaft 202 is fixedly connected to a connecting handle 203 fixedly connected to the handle 200, the middle end of the rotating shaft 202 is fixedly connected to a rotating handle 205, the top of the transmission slide plate 204 is rotatably connected to a transmission handle 209, the top of the transmission handle 209 is rotatably connected to a rotating seat 207, and the top of the rotating seat 207 is rotatably connected to a connecting plate 206 rotatably connected to the bottom of the rotating handle 205. By setting up the power component, the lifting and lowering of the universal roller 400 can be coordinated with the use of the handle 200 to adapt to the use environment. When the handle 200 is grabbed and rotated by the user, the universal roller 400 is automatically driven to move downward and land on the ground to support the ion mobility spectrometer 100.

[0039] Furthermore, in order to improve the stability of the movement of the transmission slide 204, the internal rotation of the ion migration spectrometer 100 is connected to an auxiliary handle 208, the top of the auxiliary handle 208 is rotatably connected to the inside of the rotating seat 207, and a slide groove 211 is provided inside the ion migration spectrometer 100 for the sliding connection of the transmission slide 204, and the inside of the slide groove 211 is fixedly connected to a fixing frame 210, and a return spring 212 is commonly connected between the fixing frame 210 and the transmission slide 204, wherein the cooperation between the auxiliary handle 208 and the transmission handle 209 can limit the movement of the rotating seat 207, thereby driving the transmission slide 204 to move in a straight line, and at the same time, the slide groove 211 can be used for the transmission slide 204 to move, and at the same time, the return spring 212 can effectively drive the transmission slide 204 to reset and push the axle 401 to move up and drive the universal roller 400 to retract, and at the same time, the end of the transmission slide 204 that contacts the axle 401 is an inclined surface to reduce friction and support the axle 401 to move up.

[0040] Among them, see Figure 6 , Figure 7 as well as Figure 8 In order to provide the strength of the universal roller 400 to support the ion migration spectrometer 100 and to achieve a certain degree of shock absorption, the cavity of the ion migration spectrometer 100 is fixedly connected with a plurality of sleeves 403, the bottoms of the plurality of sleeves 403 are slidably connected with piston rods 404 adapted thereto, and the bottoms of the plurality of piston rods 404 are fixedly connected to the top of the axle 401, the outer surfaces of the plurality of piston rods 404 are sleeved with compression springs 405 for resetting the piston rods 404, both ends of the axle 401 are rotatably connected with connecting rods 402 fixedly connected to the universal roller 400, the outer surface of the universal roller 400 is evenly provided with a plurality of wind blades 407, the sleeves 403 One side of the vehicle is connected to an air pipe 406, and the air outlet end of the air pipe 406 extends to the top of multiple wind blades 407, wherein the compression spring 405 can effectively drive the axle 401 to move downward so that the universal roller 400 contacts the ground to support the ion mobility spectrometer 100, and at the same time, the cooperation between the piston rod 404 and the sleeve 403 can have a certain damping force to buffer the impact force exerted on the compression spring 405, and when the universal roller 400 is retracted, the gas in the sleeve 403 is ejected through the air pipe 406 to drive the universal roller 400 to rotate, and a brush is arranged in the cavity of the ion mobility spectrometer 100 to contact the rotating universal roller 400 to clean the dust and impurities on its outer surface.

[0041] Specifically, by pulling the handle 200 to move it away from the ion mobility spectrometer 100, the handle 200 is pulled to drive the rotating shaft 202 to rotate in the support 201, so that the rotating handle 205 rotates. When the rotating handle 205 rotates, it pulls the connecting plate 206 to move upward, thereby driving the rotating seat 207 to move upward. At this time, the upward movement of the rotating seat 207 will drive the auxiliary handle 208 and the transmission handle 209 to tilt, so that the transmission slide 204 moves in the direction close to the fixed frame 210, thereby compressing the reset spring 212. When the transmission slide 204 moves, it will move away from the axle 401, so that the axle 401 is affected by gravity and The universal roller 400 moves downward due to the thrust of the compression spring 405, so that the universal roller 400 protrudes from the bottom surface of the ion mobility spectrometer 100, thereby supporting the ion mobility spectrometer 100 by contacting the ground. The handle 200 is loosened so that the torsion spring on the support 201 acts on the rotating shaft 202 to reset it, thereby driving the transmission slide 204 to reset, so that the transmission slide 204 contacts the axle 401 and drives it to move upward, so that the piston end of the piston rod 404 moves in the sleeve 403, thereby driving the gas in the sleeve 403 to be transported to the air pipe 406, and finally blown to the wind blade 407, so that the universal roller 400 rotates and contacts the brush on its outside for cleaning.

[0042] In summary, by pulling the handle 200, the device can be quickly converted from a fixed state to a mobile state, and vice versa. This conversion is not only fast and simple, but also greatly improves the flexibility and portability of the device. The combination of multiple sleeves 403 and piston rods 404, combined with the use of compression springs 405, not only enhances the support strength of the universal roller 400 for the device, but also plays a certain shock-absorbing role. This makes the device more stable when moving or placing, and reduces the error or damage that may be caused by vibration. When the device is converted from a mobile state to a fixed state, the gas in the sleeve 403 will be ejected through the air pipe 406 to drive the universal roller 400 to rotate. In this process, the brush on the outside of the universal roller 400 will clean the dust and impurities on its outer surface, realizing the automatic cleaning function. The movement of the transmission slide 204 not only drives the up and down movement of the axle 401, but also stores and releases energy by compressing and releasing the reset spring 212; and the gas in the sleeve 403, while driving the universal roller 400 to rotate, also realizes the cleaning of the universal roller.

[0043] Example 3: Please refer to Fig. 9 , Fig.10 as well as Fig.11 The present invention also provides a technical solution, which is different from the technical solution of the second embodiment: a portable magnetic field enhanced ion migration spectrometer, the bottom of the ion migration spectrometer 100 is evenly provided with a plurality of fixed suction cups 300 for fixing the ion migration spectrometer 100, and the bottom of the transmission slide 204 is provided with an exhaust component for sucking air from the plurality of fixed suction cups 300, the exhaust component includes a suction shell 301 opened at the bottom of the transmission slide 204, and the suction shell 301 is connected to the fixed suction cup 300, the bottom of the transmission slide 204 is provided with a straight groove 302 connected to the suction shell 301, the interior of the straight groove 302 is provided with a piston 306 adapted thereto, the interior of the ion migration spectrometer 100 is fixedly connected with a connecting frame 305, and one side of the connecting frame 305 is fixedly connected with a piston 306 fixedly connected to the piston 306 The straight rod 303 can generate suction when the ion mobility spectrometer 100 is stationary by setting a fixed suction cup 300 to fix the position of the ion mobility spectrometer 100, which is better than the friction generated by its own gravity. At the same time, the suction component can cooperate with the power component to make the universal roller 400 generate suction when it is folded to suck gas from the fixed suction cup 300 to fix the ion mobility spectrometer 100, and the connecting frame 305 is fixed in the ion mobility spectrometer 100. When the transmission slide plate 204 moves, the piston 306 also moves relative to the straight cylindrical groove 302, and then sucks gas from the suction shell 301, so that negative pressure is formed in the fixed suction cup 300. At the same time, when the gas passes through the turbine blades 308, the rotating rod 304 can be rotated, so that the rotating rod 304 obtains the inertia of rotation and increases the volume of gas sucked from the fixed suction cup 300.

[0044] Among them, see Fig.10 , Fig.11 as well as Fig.12 In order to further increase the volume of air extracted from the fixed suction cup 300, a bracket 307 is fixedly connected to the inside of the straight cylindrical groove 302, and a rotating rod 304 is rotatably connected to the inside of the bracket 307. A plurality of turbine blades 308 are fixedly connected to the outer surface of the rotating rod 304 and on both sides of the bracket 307.

[0045] Specifically, when the transmission slide plate 204 moves and moves the straight groove 302, the piston 306 is displaced relative to the straight groove 302, thereby extracting the gas in the suction shell 301 and then sucking air from the fixed suction cup 300, so that the fixed suction cup 300 is adsorbed on the bottom surface to fix the ion migration spectrometer 100. At the same time, when the airflow passes through the straight groove 302, the transmission turbine blade 308 is rotated to drive the rotating rod 304 to rotate, thereby increasing the airflow.

[0046] In summary, the fixed suction cup 300 can generate suction when the ion migration spectrometer 100 is stationary, and the device is firmly fixed on the ground. This fixing method is more reliable than simply relying on the friction force generated by the device's own gravity, and effectively prevents the device from sliding or moving on uneven or smooth surfaces. When the transmission slide 204 moves, the air extraction component will automatically work to extract gas from the fixed suction cup 300 to form a negative pressure, thereby enhancing the adsorption force of the fixed suction cup. On the contrary, when the transmission slide is reset, the gas in the fixed suction cup is released, and the device can be easily converted from a fixed state to a mobile state. This automatic fixing and releasing mechanism greatly improves the convenience and operability of the device. Through the design of the turbine blade 308 and the rotating rod 304, the airflow can drive the turbine blade to rotate when passing through the straight groove 302, and then drive the rotating rod to rotate. This rotational motion not only increases the air flow, but also improves the air extraction efficiency, so that the fixed suction cup 300 can form a negative pressure faster and firmly fix the device. The design of the entire fixing and moving mechanism is very coordinated, and the cooperation between the various components is close and seamless. For example, the movement of the transmission slide plate 204 not only drives the folding and lowering of the universal roller 400, but also realizes the fixing and release of the fixed suction cup 300 through the air extraction component. This design not only improves the overall performance of the device, but also makes the operation process smoother and more efficient.

[0047] Working principle: When in use, the sample to be tested is first introduced into the injection port 106 in the form of steam or particles. The sample passes through the injection tube 101, and the steam or particles pass through a semi-permeable membrane to filter out impurities such as smoke, inorganic molecules and water molecules. Then, the sample molecules enter the ionization shell 102 and are ionized into ions. Then, the sample molecules pass through the ion gate 103 and enter the migration tube 104. At the same time, the electromagnetic coil 105 is energized, so that the ionized ions migrate in a specific direction under the action of the electric field.

[0048] When the ion mobility spectrometer 100 needs to be carried for movement or the working area needs to be transferred within a small range, the handle 200 can be pulled to move it away from the ion mobility spectrometer 100. At this time, the handle 200 is pulled to drive the rotating shaft 202 to rotate in the support 201, so that the rotating handle 205 rotates. When the rotating handle 205 rotates, the pulling connecting plate 206 moves upward, thereby driving the rotating seat 207 to move upward. At this time, the upward movement of the rotating seat 207 drives the auxiliary handle 208 and the transmission handle 209 to tilt, so that the transmission slide plate 204 moves toward the direction of the fixed frame 210, thereby compressing the reset spring 212. When the transmission slide plate 204 moves, it will move away from the axle 401, so that the axle 401 moves downward due to gravity and the thrust of the compression spring 405, so that the universal roller 400 protrudes from the bottom surface of the ion mobility spectrometer 100, thereby close to the ground to support the ion mobility spectrometer 100.

[0049] At the same time, when the ion mobility spectrometer 100 needs to be stationary, the handle 200 can be loosened so that the torsion spring on the support 201 acts on the rotating shaft 202 to reset it, thereby driving the transmission slide plate 204 to reset, so that the transmission slide plate 204 contacts the axle 401 and drives it to move upward so that the piston end of the piston rod 404 moves in the sleeve 403, thereby driving the gas in the sleeve 403 to be transported to the air pipe 406, and finally blown to the wind blade 407 so that the universal roller 400 rotates and contacts the brush on its outer side for cleaning. At the same time, when the transmission slide plate 204 moves, the straight cylindrical groove 302 is moved, and the piston 306 is displaced relative to the straight cylindrical groove 302, thereby extracting the gas in the suction shell 301 and then sucking air from the fixed suction cup 300, so that the fixed suction cup 300 is adsorbed on the bottom surface to fix the ion mobility spectrometer 100, and at the same time, when the airflow passes through the straight cylindrical groove 302, the transmission turbine blade 308 is rotated to drive the rotating rod 304 to rotate, thereby increasing the air flow.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable magnetic field enhanced ion mobility spectrometer, comprising an ion mobility spectrometer (100), characterized in that: The top of the ion mobility spectrometer (100) is fixedly connected to an injection port (106) for gas to enter, an injection tube (101) connected to the injection port (106) is spirally arranged inside the ion mobility spectrometer (100), and an ionization shell (102) is fixedly connected to one end of the injection tube (101) away from the injection port (106), a migration tube (104) is arranged on one side of the ionization shell (102), and an electromagnetic coil (105) that can be energized is evenly wound on the outer surface of the migration tube (104), a handle (200) is arranged on one side of the ion mobility spectrometer (100), and the ion mobility spectrometer (100) is provided with a plurality of electrodes. ) is provided with a cavity at the bottom, a vehicle bridge (401) is arranged in the cavity, and universal rollers (400) are arranged at both ends of the vehicle bridge (401), a transmission slide plate (204) that can contact the vehicle bridge (401) is arranged inside the ion mobility spectrometer (100), a power component for driving the transmission slide plate (204) to move is arranged at one end of the handle (200), a plurality of fixed suction cups (300) for fixing the ion mobility spectrometer (100) are evenly arranged at the bottom of the ion mobility spectrometer (100), and an exhaust component for sucking air from the plurality of fixed suction cups (300) is arranged at the bottom of the transmission slide plate (204); The power assembly comprises a support (201) fixedly connected to one side of the ion mobility spectrometer (100), and the support (201) is internally rotatably connected to a rotating shaft (202), the outer surface of the rotating shaft (202) is sleeved with a torsion spring for self-reset, the outer surface of the rotating shaft (202) is fixedly connected to a connecting handle (203) fixedly connected to the handle (200), the middle end of the rotating shaft (202) is fixedly connected to a rotating handle (205), the top of the transmission slide plate (204) is rotatably connected to a transmission handle (209), the top of the transmission handle (209) is rotatably connected to a rotating seat (207), and the top of the rotating seat (207) is rotatably connected to a connecting plate (206) rotatably connected to the bottom of the rotating handle (205); The interior of the ion mobility spectrometer (100) is rotatably connected to an auxiliary handle (208), the top of the auxiliary handle (208) is rotatably connected to the interior of a rotating seat (207), a slide groove (211) for sliding connection of a transmission slide plate (204) is provided inside the ion mobility spectrometer (100), a fixing frame (210) is fixedly connected inside the slide groove (211), and a return spring (212) is commonly connected between the fixing frame (210) and the transmission slide plate (204); The cavity of the ion mobility spectrometer (100) is fixedly connected to a plurality of sleeves (403), the bottoms of the plurality of sleeves (403) are slidably connected to piston rods (404) adapted thereto, and the bottoms of the plurality of piston rods (404) are fixedly connected to the top of the axle (401), the outer surfaces of the plurality of piston rods (404) are sleeved with compression springs (405) for resetting the piston rods (404), and both ends of the axle (401) are rotatably connected to connecting rods (402) fixedly connected to the universal roller (400).

2. The portable magnetic field enhanced ion mobility spectrometer according to claim 1, characterized in that: A plurality of wind blades (407) are evenly arranged on the outer surface of the universal roller (400), one side of the sleeve (403) is connected to an air pipe (406), and an air outlet end of the air pipe (406) extends above the plurality of wind blades (407).

3. The portable magnetic field enhanced ion mobility spectrometer according to claim 1, characterized in that: The air extraction component comprises a suction shell (301) disposed at the bottom of the transmission slide (204), and the suction shell (301) and the fixed suction cup (300) are in communication with each other. A straight cylindrical groove (302) in communication with the suction shell (301) is disposed at the bottom of the transmission slide (204), and a piston (306) adapted thereto is disposed inside the straight cylindrical groove (302).

4. The portable magnetic field enhanced ion mobility spectrometer according to claim 3, characterized in that: A connecting frame (305) is fixedly connected inside the ion mobility spectrometer (100), and a straight rod (303) fixedly connected to a piston (306) is fixedly connected to one side of the connecting frame (305).

5. The portable magnetic field enhanced ion mobility spectrometer according to claim 4, characterized in that: A bracket (307) is fixedly connected inside the straight cylindrical groove (302), a rotating rod (304) is rotatably connected inside the bracket (307), and a plurality of turbine blades (308) are fixedly connected to the outer surface of the rotating rod (304) and located on both sides of the bracket (307).

6. The portable magnetic field enhanced ion mobility spectrometer according to claim 1, characterized in that: An ion gate (103) is fixedly connected inside the ionization shell (102).

7. The portable magnetic field enhanced ion mobility spectrometer according to claim 1, characterized in that: A Faraday disk is fixedly connected to a side of the migration tube (104) away from the ionization shell (102).

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