Atomic fluorescence spectrometer with adjustable lens

Abstract

The present invention relates to the technical field of atomic fluorescence spectrometers, specifically to a lens-adjustable atomic fluorescence spectrometer, comprising an outer shell, and an instrument side cover installed on the front side of the outer shell; a hollow cathode lamp is correspondingly arranged at the outer end of the installation tube on the left, and a photomultiplier tube is correspondingly arranged at the outer end of the installation tube on the right; the hollow cathode lamp is slidably connected in the outer shell through a first adjustment component; a shunt control frame is installed inside the outer shell, and the shunt control frame is arranged on the front side of the gas storage tube. The lens-adjustable atomic fluorescence spectrometer can not only maximize the collection of fluorescence signals emitted from the sample, avoid signal loss, and improve the accuracy of sample analysis and detection by adjusting the position of the lens body, but also achieve a good light beam focusing effect, ensure that the light beam of the excitation light source can be accurately focused on the sample to improve the excitation efficiency, and improve the resolution of the spectrum, so as to more accurately identify and measure the fluorescence spectra of different elements.

Description

Technical Field

[0001] The invention relates to the technical field of atomic fluorescence spectrometers, in particular to an atomic fluorescence spectrometer with adjustable lenses. Background Art

[0002] Atomic fluorescence spectrometers are widely used in environmental testing, food testing and other fields because of their ability to quickly analyze multiple elements in samples and their ease of operation. However, there are still some problems with using atomic fluorescence spectrometers, such as:

[0003] The patent name disclosed in the prior art application number "CN201810083178.5" is "An Atomic Fluorescence Spectrometer"; the center of the first photodetector is located at the focus of the transmitted light of the converging lens. Placing the center of the first photodetector at the focus of the transmitted light of the converging lens can make the energy of the transmitted light received by the first photodetector the strongest, thereby improving the detection sensitivity. By setting a converging reflection device in the optical path, all lights of different wavelengths can be accurately converged to the center of the atomizer, and avoiding the problem of inconsistent convergence focus of the converging lens for light beams of different wavelengths, thereby improving the detection sensitivity of the atomic fluorescence spectrometer. In addition, by setting a light collector and a second photodetector, the influence of the energy drift of the excitation light source on the detection results is avoided, further improving the stability and detection accuracy of the atomic fluorescence spectrometer, and by placing the excitation light source at a preset angle, the volume of the atomic fluorescence spectrometer is reduced, and the service life of the atomic fluorescence spectrometer is extended. It is suitable for single-channel measurement as well as dual-channel and multi-channel measurement;

[0004] The patent name disclosed in the prior art application number "CN201120381258.2" is "A portable atomic fluorescence spectrometer, the light emitted by the hollow cathode lamp is converged by the first double convex lens and focused directly above the atomizer, and the height from the upper edge of the atomizer is 3mm to 7mm. The atomizer is automatically drained without external force extraction. The fluorescence generated at the focus is focused on the photocathode surface of the photomultiplier tube through the second double convex lens. The diameter of the first double convex lens and the second double convex lens is 3mm to 15mm, and the focal length is 5mm to 10mm. The photomultiplier tube is a solar blind type with a response wavelength of 160nm to 320nm. The leakage sensor is installed on the sampling platform composed of the first diaphragm pump and the second diaphragm pump, and is used to monitor the leakage of the flow system of the portable atomic fluorescence spectrometer. Fire The flame sensor is installed above the atomizer and is used to monitor the flame ignition state of the portable atomic fluorescence spectrometer. The GPS positioning module, the GPRS data wireless transmission module, the vibration sensor, and the temperature and humidity sensor are installed on the optical substrate of the portable atomic fluorescence spectrometer. The GPS positioning module is used to determine the location of the on-site detection site of the portable atomic fluorescence spectrometer. The GPRS data wireless transmission module is used for the wireless transmission of on-site detection data of the portable atomic fluorescence spectrometer. The vibration sensor is used to monitor the bumping and vibration state of the portable atomic fluorescence spectrometer when working on-site. The temperature and humidity sensor is used to determine whether the temperature and humidity of the working site of the portable atomic fluorescence spectrometer can meet the analysis requirements. The power supply battery is installed below the optical substrate of the spectrometer. The power supply battery is a lithium-ion battery with a capacity of 0.5Ah to 3Ah.

[0005] When the two atomic fluorescence spectrometers mentioned above are used, the internal lenses are mostly installed on mechanical brackets, and the mechanical brackets are mostly installed in the outer shell by screws. When the atomic fluorescence spectrometer is analyzing different samples, if the position of the lens needs to be adjusted, the screws need to be removed first, which is inconvenient to operate. Therefore, it is not convenient to adjust the position of the lens according to different samples, so that the fluorescence signal emitted from the sample cannot be collected to the maximum extent in the later stage, which will reduce the signal loss and affect the accuracy of the later sample analysis and detection;

[0006] Therefore, we proposed a lens-adjustable atomic fluorescence spectrometer to solve the above problems. Summary of the invention

[0007] The object of the present invention is to provide an atomic fluorescence spectrometer with adjustable lens, so as to solve the problem raised in the above background technology that the atomic fluorescence spectrometers currently on the market are mostly installed on a mechanical bracket when in use, and the mechanical bracket is mostly installed in an outer shell by screws. When the atomic fluorescence spectrometer is analyzing different samples, if the position of the lens needs to be adjusted, the screws need to be removed first, which is inconvenient to operate. Therefore, it is not convenient to adjust the position of the lens according to different samples, so that the fluorescence signal emitted from the sample cannot be collected to the maximum extent in the later stage, which will reduce the signal loss and affect the accuracy of the later sample analysis and detection.

[0008] To achieve the above object, the present invention provides the following technical solution: a lens adjustable atomic fluorescence spectrometer, comprising an outer shell, and an instrument side cover installed on the front side of the outer shell;

[0009] The upper surface of the outer shell is connected to an instrument upper cover, and the interior of the instrument upper cover is connected through an exhaust chimney;

[0010] An atomizer is installed in the middle of the outer shell, and an exhaust chimney is correspondingly arranged above the atomizer;

[0011] A sample injection tube is installed through the front side of the atomizer, and two mounting tubes are symmetrically installed on the outer side of the atomizer. The interiors of the two mounting tubes are slidably connected to the lens body through the second adjustment component;

[0012] The outer end of the left installation tube is correspondingly provided with a hollow cathode lamp, and the outer end of the right installation tube is correspondingly provided with a photomultiplier tube;

[0013] The hollow cathode lamp is slidably connected in the outer shell via a first adjustment assembly;

[0014] An air storage pipe is installed in a groove inside the rear side surface of the outer shell, and a flow diversion control frame is installed inside the outer shell. The flow diversion control frame is arranged on the front side of the air storage pipe.

[0015] Preferably, a peristaltic pump is installed on the outer side of the front end of the sample injection tube, the peristaltic pump is installed in a groove in the front side of the outer shell, and an instrument side cover is provided on the front side of the peristaltic pump;

[0016] The photomultiplier tube is mounted on a second mounting seat inside the outer shell.

[0017] Preferably, a sliding groove is provided inside the outer shell, a first mounting seat is slidably connected inside the sliding groove, and a hollow cathode lamp is installed inside the first mounting seat;

[0018] A first adjusting component is installed inside the sliding groove, a first piston component is slidably connected inside the first adjusting component, and one end of the first piston component is connected to the first mounting seat.

[0019] Preferably, a first connecting pipe is installed penetratingly inside one end of the first adjusting assembly, and the first connecting pipe injects compressed air into the first adjusting assembly to drive the first piston assembly to slide inside the first adjusting assembly.

[0020] Preferably, a second adjusting assembly is installed inside one side of the installation tube, a second piston assembly is slidably connected inside the second adjusting assembly, and a lens body is installed at one end of the second piston assembly;

[0021] A second connecting pipe is installed through one end of the second adjusting component, and one end of the second connecting pipe penetrates the surface of the installation pipe;

[0022] A limiting rod is installed inside the other side surface of the installation tube, and a lens body is slidably connected to the outer side of the limiting rod.

[0023] Preferably, an air intake pipe is installed through the outside of the air storage pipe, and the air intake pipe penetrates the rear side of the outer shell and is connected to the external compressed air delivery mechanism;

[0024] The inside of the air storage pipe is slidably connected with a main piston assembly, an air inlet pipe is arranged above the main piston assembly, an electric push rod is installed below the main piston assembly, and the bottom end of the electric push rod is installed in the outer shell.

[0025] Preferably, the rear side of the flow shunt control frame is connected to the inside of the gas storage pipe through the exhaust pipe, and the front side of the flow shunt control frame is provided with a first flow shunt pipe and two second flow shunt pipes, and the distance from the first flow shunt pipe to the center of the flow shunt control frame is equal to the distance from the second flow shunt pipe to the center of the flow shunt control frame;

[0026] The first shunt pipe is connected to one end of the first connecting pipe, and the second shunt pipe is connected to one end of the second connecting pipe;

[0027] The inner wall of the front side of the shunt control frame is rotatably connected with a shunt control board, a gap exists between the rear side of the shunt control board and the inner wall of the rear side of the shunt control frame, and a control rod on the rear side of the shunt control board penetrates the rear side of the shunt control frame and is connected to the motor in the rear side of the outer shell;

[0028] A shunt hole is provided inside the shunt control plate, and the shunt hole is coincident with and corresponds to the first shunt pipe and the two second shunt pipes respectively through the rotation of the shunt control plate.

[0029] Preferably, the diversion control assembly includes valves installed in the second connecting pipe and the first connecting pipe.

[0030] Preferably, a rotating rod is rotatably connected to a slot on one side of the first mounting seat, a vortex spring is nested and connected to the outer side of the lower side of the rotating rod, and a support plate is installed on the outer side of the rotating rod, and the support plate is arranged in an inclined shape;

[0031] A support ring is installed on one side of the support plate away from the first mounting seat, and a connecting harness runs through the support ring. One end of the connecting harness is connected to the hollow cathode lamp, and the other end of the connecting harness is connected to the plug interface on the inner wall of the rear side of the outer shell.

[0032] Preferably, an inclined fixing plate is installed inside the outer shell, and the expansion plate rotates with the center of the rotating rod as the center through the fixing plate.

[0033] Compared with the prior art, the beneficial effects of the present invention are: the lens-adjustable atomic fluorescence spectrometer can not only maximize the collection of fluorescence signals emitted from the sample, avoid signal loss, and improve the accuracy of sample analysis and detection by adjusting the position of the lens body, but also achieve a good light beam focusing effect, ensure that the light beam of the excitation light source can be accurately focused on the sample to improve the excitation efficiency, and improve the resolution of the spectrum, so as to more accurately identify and measure the fluorescence spectra of different elements. The specific contents are as follows:

[0034] (1) A certain amount of compressed air is injected into the second actuating assembly through the second connecting pipe, so that the gas in the second actuating assembly automatically pushes the second piston assembly to move under a certain pressure, and then the second piston assembly pushes the lens body to move, thereby facilitating the adjustment of the position of the lens body and the distance between the lens body and the sample according to different samples, and the adjustment is quick and convenient. Subsequently, by adjusting the position of the lens body, not only can the fluorescence signal emitted from the sample be collected to the maximum extent, signal loss can be avoided, and the accuracy of sample analysis and detection can be improved, but also the light beam focusing effect can be improved, ensuring that the light beam of the excitation light source can be accurately focused on the sample, so as to improve the excitation efficiency, and improve the spectral resolution, so as to more accurately identify and measure the fluorescence spectra of different elements;

[0035] Similarly, a certain amount of compressed air is injected into the first adjusting component through the first connecting pipe, so that the gas in the first adjusting component automatically pushes the first piston component to move after a certain pressure, so that the first piston component drives the first mounting seat and the hollow cathode lamp to move, so that the position of the hollow cathode lamp can be adjusted according to different samples, thereby improving the later beam alignment rate, ensuring that the atoms in the sample can be effectively excited, and also improving the excitation efficiency and the intensity of the fluorescence signal by improving the beam focusing rate;

[0036] By moving the main piston assembly in the gas storage tube, the compressed air in the gas storage tube can be delivered to the first connecting tube or the second connecting tube, thereby providing a power source for subsequent adjustment of the position of the lens body and the hollow cathode lamp;

[0037] By rotating the flow splitting control plate in the flow splitting control assembly in the flow splitting control frame, the flow splitting holes can be overlapped and corresponded with a first flow splitting tube and two second flow splitting tubes in sequence, and then compressed air can be injected into the first connecting tube and the two second connecting tubes in sequence, so that the positions of a hollow cathode lamp and two lens bodies can be adjusted according to actual use requirements, and the operation is convenient without setting multiple power sources;

[0038] (2) The flow dividing control assembly includes a valve, and the valve is installed in the first connecting pipe and the second connecting pipe, so that the first connecting pipe and the second connecting pipe can be closed and opened by controlling the valve, which is convenient to operate;

[0039] (3) By using the support plate in conjunction with the support ring, a longer connecting harness can be spread out and placed to avoid the longer connecting harness being entangled together. At the same time, the support plate is pushed to rotate by the fixing plate at a later stage, so that the support plate will not spread the connecting harness through rotation. Therefore, the hollow cathode lamp will not pull and damage the connecting harness when it is moved, which is convenient for protecting the longer connecting harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0041] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0042] Figure 3 This is a schematic diagram of the structure of the instrument of the present invention after the upper cover is opened;

[0043] Figure 4 It is a schematic diagram of a partial cross-sectional structure of the outer shell of the present invention;

[0044] Figure 5 This is a schematic diagram of the rear view structure of the flow diversion control frame of the present invention;

[0045] Figure 6 It is a schematic cross-sectional structural diagram of the first adjustment component of the present invention;

[0046] Figure 7 This is a schematic diagram of the cross-sectional structure of the installation pipe of the present invention;

[0047] Figure 8 For the present invention Figure 7 The enlarged structural diagram at A in the middle;

[0048] Fig. 9 This is a schematic diagram of the cross-sectional structure of the gas storage pipe of the present invention;

[0049] Fig.10 This is a schematic diagram of the rear view structure of the flow diversion control frame and the flow diversion control board separated from each other in the present invention;

[0050] Fig.11This is a schematic diagram of the three-dimensional structure of the support plate of the present invention;

[0051] Fig.12 It is a schematic diagram of the three-dimensional structure of the fixing plate of the present invention.

[0052] In the figure: 1, outer shell; 2, instrument side cover; 3, instrument upper cover; 4, exhaust chimney; 5, sample injection tube; 6, peristaltic pump; 7, atomizer; 8, photomultiplier tube; 9, hollow cathode lamp; 10, shunt control frame; 101, exhaust pipe; 102, first shunt pipe; 103, second shunt pipe; 11, mounting pipe; 111, limit rod; 12, first mounting seat; 13, second mounting seat; 14, sliding slot; 15, first adjustment assembly; 15 1. First connecting pipe; 152. First piston assembly; 16. Air storage pipe; 161. Air intake pipe; 162. Main piston assembly; 163. Electric push rod; 17. Lens body; 18. Second adjustment assembly; 181. Second connecting pipe; 182. Second piston assembly; 19. Opening plate; 191. Support ring; 192. Rotating rod; 193. Vortex spring; 20. Fixed plate; 21. Connecting harness; 22. Diverter control plate; 221. Diverter hole. DETAILED DESCRIPTION

[0053] 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.

[0054] See also Figure 1-Figure 12 , the present invention provides the following technical solutions:

[0055] Embodiment 1: The lens adjustable atomic fluorescence spectrometer in this embodiment can adjust the position of the lens body 17 according to different samples when in use, so as to maximize the collection of fluorescence signals emitted from the sample and improve the accuracy of sample analysis and detection. Figure 1-Figure 10As shown, it includes an outer shell 1, and an instrument side cover 2 installed on the front side of the outer shell 1; the upper surface of the outer shell 1 is connected to the instrument cover 3, and the interior of the instrument cover 3 is penetrated and connected with an exhaust chimney 4; an atomizer 7 is installed at the middle position inside the outer shell 1, and the exhaust chimney 4 is correspondingly installed above the atomizer 7; a sample injection tube 5 is penetrated and installed on the front side of the atomizer 7, and two mounting tubes 11 are symmetrically installed on the outer side of the atomizer 7, and the interiors of the two mounting tubes 11 are slidably connected with a lens body 17 through a second adjustment component 18; the outer end of the mounting tube 11 on the left side is correspondingly provided with a hollow cathode lamp 9, and the outer end of the mounting tube 11 on the right side is correspondingly provided with a photomultiplier tube 8; the hollow cathode lamp 9 is slidably connected in the outer shell 1 through the first adjustment component 15; a gas storage tube 16 is installed in a groove inside the rear side of the outer shell 1, and a shunt control frame 10 is installed inside the outer shell 1, and the shunt control frame 10 is arranged on the front side of the gas storage tube 16. A peristaltic pump 6 is installed on the outer side of the front end of the sample injection tube 5. The peristaltic pump 6 is installed in a groove in the front side of the outer shell 1. The front side of the peristaltic pump 6 is provided with an instrument side cover 2; the photomultiplier tube 8 is installed on the second mounting seat 13 inside the outer shell 1. A sliding groove 14 is provided inside the outer shell 1. The first mounting seat 12 is slidably connected inside the sliding groove 14. A hollow cathode lamp 9 is installed inside the first mounting seat 12; a first adjustment component 15 is installed inside the sliding groove 14. The first piston component 152 is slidably connected inside the first adjustment component 15. One end of the first piston component 152 is connected to the first mounting seat 12. A first connecting pipe 151 is installed through one end of the first adjustment component 15. The first connecting pipe 151 injects compressed air into the first adjustment component 15 to drive the first piston component 152 to slide inside the first adjustment component 15. A second adjusting assembly 18 is installed inside one side surface of the mounting tube 11, and a second piston assembly 182 is slidably connected inside the second adjusting assembly 18, and a lens body 17 is installed at one end of the second piston assembly 182; a second connecting tube 181 is installed through one end of the second adjusting assembly 18, and one end of the second connecting tube 181 passes through the surface of the mounting tube 11; a limiting rod 111 is installed inside the other side surface of the mounting tube 11, and the outer side of the limiting rod 111 is slidably connected with the lens body 17.

[0056] An air intake pipe 161 is installed through the outside of the air storage pipe 16, and the air intake pipe 161 passes through the rear side of the outer shell 1 and is connected to the external compressed air delivery mechanism; the inside of the air storage pipe 16 is slidably connected to the main piston assembly 162, and the air intake pipe 161 is arranged above the main piston assembly 162, and an electric push rod 163 is installed below the main piston assembly 162, and the bottom end of the electric push rod 163 is installed in the outer shell 1. The rear side of the flow splitter control frame 10 is connected to the inside of the air storage pipe 16 through the exhaust pipe 101, and a first flow splitter pipe 102 and two second flow splitter pipes 103 are provided on the front side of the flow splitter control frame 10, and the distance from the first flow splitter pipe 102 to the center of the flow splitter control frame 10 is equal to the distance from the second flow splitter pipe 103 to the center of the flow splitter control frame 10;

[0057] The first shunt pipe 102 is connected to one end of the first connecting pipe 151, and the second shunt pipe 103 is connected to one end of the second connecting pipe 181; the shunt control plate 22 is connected to the inner wall of the front side of the shunt control frame 10 in a rotatable manner, and there is a gap between the rear side of the shunt control plate 22 and the inner wall of the rear side of the shunt control frame 10, and the control rod on the rear side of the shunt control plate 22 penetrates the rear side of the shunt control frame 10 and is connected to the motor in the rear side of the outer shell 1; a shunt hole 221 is opened inside the shunt control plate 22, and the shunt hole 221 coincides with the first shunt pipe 102 and the two second shunt pipes 103 respectively through the rotation of the shunt control plate 22;

[0058] First, the entire atomic fluorescence spectrometer is moved into the use area, and then the compressed air from the outside is delivered to the gas storage tube 16 through the air inlet pipe 161. Then, when the position of one of the lens bodies 17 needs to be adjusted according to different samples, the motor in the rear side of the outer shell 1 is started, so that the motor drives the shunt control plate 22 of the shunt control frame 10 to rotate. After the shunt control plate 22 rotates 60°, the rotation of the shunt control plate 22 is stopped. At this time, the shunt hole 221 in the shunt control plate 22 is aligned with the shunt hole 221 in the shunt control plate 22. The second shunt pipe 103 overlaps, and the electric push rod 163 in the rear side of the outer shell 1 is started. The output end of the electric push rod 163 drives the main piston assembly 162 in the gas storage pipe 16 to move upward, so that the main piston assembly 162 delivers the compressed air in the gas storage pipe 16 to the shunt control frame 10 through the exhaust pipe 101. At this time, the compressed air in the shunt control frame 10 is delivered to one of the second connecting pipes 181 through the overlapping shunt holes 221 and one of the second shunt pipes 103. At this time, the second connecting pipe 18 1. Compressed air is delivered to one of the second adjustment components 18, and then the gas in the second adjustment component 18 automatically pushes the second piston component 182 to move outward after a certain pressure. At this time, the second piston component 182 drives the lens body 17 to move in the mounting tube 11. At this time, one side of the lens body 17 slides on the outer side of the limit rod 111, thereby ensuring that the lens body 17 stably fits the inner wall of the mounting tube 11 for movement, and then the position of one of the lens bodies 17 can be adjusted. If it is necessary to adjust the position of the other lens body 17, as shown above, similarly, continue to rotate the shunt control plate 22, so that the shunt hole 221 in the shunt control plate 22 coincides with the other second shunt tube 103, so that the position of the other lens body 17 can be adjusted in the same way. The lens body 17 after position adjustment can achieve a good light beam focusing effect, ensuring that the light beam of the excitation light source can be accurately focused on the sample to improve the excitation efficiency, and can also improve the resolution of the spectrum, so as to more accurately identify and measure the fluorescence spectra of different elements;

[0059] When it is necessary to adjust the position of the hollow cathode lamp 9 according to different samples, at this time, as shown above, the shunt control plate 22 is rotated so that the shunt hole 221 in the shunt control plate 22 coincides with the first shunt tube 102. At this time, the compressed air in the gas storage tube 16 enters the first connecting tube 151 through the cooperation of the shunt hole 221 and the first shunt tube 102. The first connecting tube 151 transports the compressed air to the first adjustment component 15. At this time, the gas in the first adjustment component 15 pushes the first piston component 152 to move under a certain pressure, and then the first piston component 152 pushes the first mounting seat 12 to slide in the sliding groove 14. At this time, the first mounting seat 12 drives the hollow cathode lamp 9 to move, so the position of the hollow cathode lamp 9 can be adjusted, so that the later atomic fluorescence spectrometer can improve the later beam alignment rate when in use to ensure that the atoms in the sample can be effectively excited, and can also improve the excitation efficiency and the intensity of the fluorescence signal by improving the beam focusing rate, so that it is convenient for the atomic fluorescence spectrometer to be used well;

[0060] After the positions of the hollow cathode lamp 9 and the lens body 17 are adjusted, the instrument side cover 2 is opened, the sample injection tube 5 is inserted into the external sample, the peristaltic pump 6 is turned on, so that the peristaltic pump 6 cooperates with the sample injection tube 5 to transport the sample to the atomizer 7, and then the switch of the atomic fluorescence spectrometer is turned on, and the atomizer 7 in the atomic fluorescence spectrometer starts to process the sample, and then the excitation light source is focused through the cooperation of the photomultiplier tube 8, the hollow cathode lamp 9 and the lens body 17, and the fluorescence signal generated in the sample is guided to the detector in the outer shell 1, and then the atomic fluorescence spectrometer analyzes and detects the sample well, so as to measure the fluorescence spectrum generated after the atoms in the sample are excited to determine the type and concentration of the element;

[0061] Embodiment 2: The lens adjustable atomic fluorescence spectrometer in this embodiment is based on the embodiment 1, and the shunt control component includes valves installed in the second connecting pipe 181 and the first connecting pipe 151. The valve can be used to replace the shunt control plate 22 in the shunt control component. The shunt control component includes a valve, and the valve can be installed in the first connecting pipe 151 and the second connecting pipe 181. The valve is used to control the opening or closing of the first connecting pipe 151 and the second connecting pipe 181, so that the compressed air can be controlled to enter the first connecting pipe 151 or the second connecting pipe 181, so that only one gas storage pipe 16 needs to be designed to control the first adjustment component 15 and the second adjustment component 18, and the structure is simple and the operation is convenient;

[0062] Embodiment 3: The lens adjustable atomic fluorescence spectrometer in this embodiment can protect the longer connecting wire harness 21 on the basis of embodiment 1. Figure 3-Figure 5A rotating rod 192 is rotatably connected to a slot on one side of the first mounting seat 12, and a vortex spring 193 is nested and connected to the lower outer side of the rotating rod 192. A support plate 19 is installed on the outer side of the rotating rod 192, and the support plate 19 is arranged in an inclined state; a support ring 191 is installed on the side of the support plate 19 away from the first mounting seat 12, and a connecting wire harness 21 runs through the support ring 191. One end of the connecting wire harness 21 is connected to the hollow cathode lamp 9, and the other end of the connecting wire harness 21 is connected to the plug interface on the inner wall of the rear side of the outer shell 1. An inclined fixing plate 20 is installed inside the outer shell 1, and the support plate 19 rotates with the center of the rotating rod 192 as the center through the fixing plate 20, and the attached Figure 11-Figure 12 As shown, at this time, the interior of the support ring 191 is penetrated by a connecting wire harness 21, so the inclined expansion plate 19 cooperates with the support ring 191 to expand the longer connecting wire harness 21 outward to prevent the connecting wire harness 21 from piling up and getting tangled. Then, when the first mounting seat 12 drives the hollow cathode lamp 9 to move, the first mounting seat 12 will also drive the expansion plate 19 to move together. When the expansion plate 19 moves to contact the fixed plate 20 fixed in the outer shell 1, the expansion plate 19 will be limited by the fixed plate 20 and rotate with the rotating rod 192 as the center of the circle. At this time, the vortex spring 193 on the outer side below the rotating rod 192 accumulates force, and the expansion plate 19 rotates to prevent the connecting wire harness 21 from being expanded. Therefore, it is convenient for the hollow cathode lamp 9 to pull the connecting wire harness 21 well when moving, and the connecting wire harness 21 will not be damaged. Therefore, it is convenient to protect and use the longer connecting wire harness 21 well, thereby completing a series of tasks.

[0063] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lens adjustable atomic fluorescence spectrometer, comprising an outer shell (1), and an instrument side cover (2) mounted on the front side of the outer shell (1); The upper surface of the outer shell (1) is connected to an instrument upper cover (3), and the interior of the instrument upper cover (3) is penetrated and connected to an exhaust chimney (4); It is characterized in that Also includes: An atomizer (7) is installed in the middle of the outer shell (1), and an exhaust chimney (4) is correspondingly arranged above the atomizer (7); A sample injection tube (5) is installed through the front side of the atomizer (7), two installation tubes (11) are symmetrically installed on the outside of the atomizer (7), and the insides of the two installation tubes (11) are slidably connected to the lens body (17) via a second adjustment component (18); The outer end of the left installation tube (11) is correspondingly provided with a hollow cathode lamp (9), and the outer end of the right installation tube (11) is correspondingly provided with a photomultiplier tube (8); The hollow cathode lamp (9) is slidably connected in the outer shell (1) via a first adjustment component (15); An air storage pipe (16) is installed in a groove inside the rear side surface of the outer shell (1), and a flow splitting control frame (10) is installed inside the outer shell (1), and the flow splitting control frame (10) is arranged on the front side of the air storage pipe (16); The outer shell (1) is provided with a sliding groove (14) inside, and the first mounting seat (12) is slidably connected inside the sliding groove (14); The rear side of the flow splitting control frame (10) is connected to the interior of the gas storage pipe (16) through an exhaust pipe (101); a first flow splitting pipe (102) and two second flow splitting pipes (103) are provided on the front side of the flow splitting control frame (10); the distance from the first flow splitting pipe (102) to the center of the flow splitting control frame (10) is equal to the distance from the second flow splitting pipe (103) to the center of the flow splitting control frame (10); The first shunt pipe (102) is connected to one end of the first connecting pipe (151), and the second shunt pipe (103) is connected to one end of the second connecting pipe (181); The inner wall of the front side of the flow splitting control frame (10) is rotatably connected with a flow splitting control plate (22), a distance exists between the rear side of the flow splitting control plate (22) and the inner wall of the rear side of the flow splitting control frame (10), and a control rod on the rear side of the flow splitting control plate (22) penetrates the rear side of the flow splitting control frame (10) and is connected to a motor in the rear side of the outer shell (1); A flow diversion hole (221) is provided inside the flow diversion control plate (22), and the flow diversion hole (221) is coincident with and corresponds to the first flow diversion tube (102) and the two second flow diversion tubes (103) respectively through the rotation of the flow diversion control plate (22); A rotating rod (192) is rotatably connected to a groove on one side of the first mounting seat (12); a vortex spring (193) is nested and connected to the outer side of the lower side of the rotating rod (192); a support plate (19) is installed on the outer side of the rotating rod (192); and the support plate (19) is arranged in an inclined shape; A support ring (191) is installed on a side of the support plate (19) away from the first mounting seat (12), a connecting wire harness (21) runs through the support ring (191), one end of the connecting wire harness (21) is connected to the hollow cathode lamp (9), and the other end of the connecting wire harness (21) is connected to the plug interface on the inner wall of the rear side of the outer shell (1); An inclined fixing plate (20) is installed inside the outer shell (1), and the expansion plate (19) rotates with the center of the rotating rod (192) as the center of the circle through the fixing plate (20).

2. The lens adjustable atomic fluorescence spectrometer according to claim 1, characterized in that: A peristaltic pump (6) is installed on the outer side of the front end of the sample injection tube (5), the peristaltic pump (6) is installed in a groove in the front side of the outer shell (1), and an instrument side cover (2) is provided on the front side of the peristaltic pump (6); The photomultiplier tube (8) is mounted on a second mounting seat (13) inside the outer shell (1).

3. The lens adjustable atomic fluorescence spectrometer according to claim 1, characterized in that: A hollow cathode lamp (9) is installed in the first mounting seat (12); A first adjusting assembly (15) is installed inside the sliding groove (14), and a first piston assembly (152) is slidably connected inside the first adjusting assembly (15), and one end of the first piston assembly (152) is connected to the first mounting seat (12).

4. The lens adjustable atomic fluorescence spectrometer according to claim 3, characterized in that: A first connecting pipe (151) is installed through one end of the first adjusting component (15), and the first connecting pipe (151) injects compressed air into the first adjusting component (15) to drive the first piston component (152) to slide in the first adjusting component (15).

5. The lens adjustable atomic fluorescence spectrometer according to claim 1, characterized in that: A second adjusting assembly (18) is installed inside one side of the installation tube (11), a second piston assembly (182) is slidably connected inside the second adjusting assembly (18), and a lens body (17) is installed at one end of the second piston assembly (182); A second connecting pipe (181) is installed through one end of the second adjusting component (18), and one end of the second connecting pipe (181) penetrates the surface of the installation pipe (11); A limiting rod (111) is installed inside the other side surface of the installation tube (11), and a lens body (17) is slidably connected to the outer side of the limiting rod (111).

6. The lens adjustable atomic fluorescence spectrometer according to claim 1, characterized in that: An air intake pipe (161) is installed through the outside of the air storage pipe (16), and the air intake pipe (161) passes through the rear side of the outer shell (1) and is connected to an external compressed air delivery mechanism; A main piston assembly (162) is slidably connected inside the air storage pipe (16), an air intake pipe (161) is arranged above the main piston assembly (162), an electric push rod (163) is installed below the main piston assembly (162), and the bottom end of the electric push rod (163) is installed in the outer shell (1).

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