Integrated inductively coupled plasma mass spectrometer

Abstract

The invention relates to the technical field of mass spectrometers, in particular to an integrated inductively coupled plasma mass spectrometer which comprises a base, a mass spectrometer body is fixedly installed at the top of the base, and a sample injection mechanism is fixedly installed on the front face of the mass spectrometer body. According to the application, the flexibility and convenience of sample introduction can be effectively improved, during sample introduction, the first motor is firstly started to drive the bearing disc to rotate, and the sample test tube on the bearing assembly is rotated to the position below the suction needle tube; then, a second motor is started, a first lead screw is driven to rotate, a sliding block slides downwards, a connecting arm and an automatic injection pump are driven to descend, a suction needle tube is inserted into a sample test tube, the automatic injection pump is started to complete sample injection, and after sample injection is completed, a third motor drives a second bevel gear to be meshed with a first bevel gear to drive the second lead screw to make the sliding block move; and the first motor can flexibly adjust the position of the bearing assembly in the whole process.

Description

Technical Field

[0001] This application relates to the technical field of mass spectrometers, and in particular to an integrated inductively coupled plasma mass spectrometer. Background Art

[0002] In modern scientific research and industrial production, elemental analysis is of crucial importance. As an advanced instrument integrating inductively coupled plasma (ICP) and mass spectrometry (MS) technologies, the integrated inductively coupled plasma mass spectrometer (ICP-MS) has been widely used in many fields such as environmental monitoring, geological exploration, food and drug safety, materials science, and biomedicine due to its significant advantages such as high sensitivity, low detection limit, rapid analysis, and simultaneous determination of multiple elements and isotopes, providing accurate and reliable elemental analysis data for various fields and strongly promoting the development of scientific research and production.

[0003] The sample introduction system is a key component of ICP-MS, directly affecting the accuracy and efficiency of analysis results. Traditional mass spectrometer samplers have exposed certain problems in actual use. Currently, most samplers are fixed and lack flexibility. They can only sample a single test tube. Users must place the samples on the placement plate one by one and cannot sample multiple different test tubes simultaneously, greatly reducing the work efficiency and affecting the normal operation process of users.

[0004] To solve the above problems, the Chinese patent with the publication number "CN116417327A" discloses a mass spectrometer automatic sampler and sampling method. This device can control the horizontal and vertical positions of the sampling head through the left-right transmission mechanism and the lifting transmission mechanism to achieve sampling of multiple test tubes, improving the sampling efficiency to a certain extent. However, this device still has obvious defects. In the actual sampling process, the test tubes are usually arranged in an equidistant matrix. This sampler can only perform horizontal and vertical displacements and cannot move forward and backward. This makes it difficult to conveniently draw and inject samples when facing the front test tubes, and its limitations are particularly prominent in some complex sample analysis scenarios, affecting the overall use effect and work efficiency and unable to meet the growing high-precision and high-efficiency analysis requirements. It can be seen that the existing mass spectrometer sampler technology has obvious deficiencies and urgently needs to be improved in design. Summary of the Invention

[0005] In order to improve the stability and flexibility of the existing mass spectrometer automatic sampling, this application provides an integrated inductively coupled plasma mass spectrometer.

[0006] An integrated inductively coupled plasma mass spectrometer provided by this application adopts the following technical solutions: It includes a base, on the top of the base, a mass spectrometer body is fixedly installed, on the front of the mass spectrometer body, a sample introduction mechanism is fixedly installed, and in the middle of the front of the base, a sample carrying mechanism is fixedly installed, and the sample carrying mechanism is arranged directly below the sample introduction mechanism; The sample carrier mechanism includes a substrate, which is fixedly installed in the middle of the front surface of the base. A fixed plate is fixedly installed at the front end of the substrate. A first motor is fixedly installed in the middle of the bottom of the fixed plate. A carrier plate is fixedly installed at the top of the first motor. Four displacement components are installed on the carrier plate in an equidistant and annular arrangement. A driving component is fixedly installed in the middle of the top of the carrier plate. The output end of the driving component is in transmission connection with the inner ends of the four displacement components. The top of each displacement component is fixedly installed with a carrier component.

[0007] Optionally, the sample injection mechanism includes a guide rail, which is fixedly installed on one side of the front surface of the mass spectrometer body. A second motor is fixedly connected to the top of the guide rail. The output end of the second motor penetrates through the guide rail and is fixedly installed with a first lead screw. The first lead screw is rotatably connected inside the guide rail. A slider is threadedly connected to the outer surface of the first lead screw. A sample injection component is fixedly connected to the front surface of the slider.

[0008] Optionally, the sample injection component includes a connecting arm, which is fixedly connected to the front surface of the slider. The top view shape of the connecting arm is L-shaped. An automatic injection pump is fixedly connected to the front end of the connecting arm. A suction needle tube is fixedly connected to the input end of the automatic injection pump. The output end of the automatic injection pump is communicated with the inside of the mass spectrometer body.

[0009] Optionally, support frames are fixedly installed on both sides of the bottom of the base. The side shape of the support frame is an isosceles trapezoid, and the outer corners of the support frame are all set to be arc-shaped.

[0010] Optionally, the displacement component includes a chute, which is arranged in an equidistant and annular arrangement on the outside of the carrier plate. A second lead screw is rotatably connected inside each chute. A sliding block is threadedly connected to the outer surface of the second lead screw. The top of the sliding block is fixedly connected to the bottom of the carrier component.

[0011] Optionally, the driving component includes a mounting frame and a square groove. The mounting frame is fixedly installed in the middle of the top of the carrier plate. The square groove is opened in the middle of the top of the carrier plate. Four first bevel gears are rotatably connected in the square groove in a 2*2 equidistant arrangement. A third motor is fixedly installed on the top of the mounting frame. The output end of the third motor penetrates through the mounting frame and is fixedly installed with a second bevel gear. The first bevel gear is meshed with the second bevel gear. The outer side of the first bevel gear is connected to the inner end of the second lead screw.

[0012] Optionally, the cross-sectional shapes of the inner cavities of the chutes and the inner cavities of the guide rails are both set to be convex-shaped. The overall shapes of the sliders and the sliding blocks are also both set to be convex-shaped. Wear-resistant gaskets are fixedly connected to the outer surfaces of the sliders and the sliding blocks.

[0013] Optionally, the carrier assembly includes a concave carrier seat fixedly installed on the top of the sliding block. Limiting components are fixedly installed on both sides of the concave carrier seat, and the inner ends of the limiting components penetrate through the concave carrier seat to clamp a sample test tube.

[0014] Optionally, the limiting component includes a frame fixedly installed on both sides of the concave carrier seat. A limiting spring is fixedly installed inside the frame. A sliding frame is fixedly installed at the end of the limiting spring. The end of the sliding frame penetrates through the frame and is fixedly installed with a clamping plate. The sliding frame is slidably connected to both sides of the concave carrier seat. Clamping grooves are equidistantly arranged on the inner side of the clamping plate. The top view shape of the clamping groove is set as a V shape, and the sample test tube is arranged inside the clamping groove.

[0015] Optionally, a linkage frame is fixedly installed on the outer side of the sliding frame. A triangular guide plate is fixedly installed on the inner side of the outer end of the linkage frame. A connecting arm is fixedly installed at the bottom of the base plate. A support rod is fixedly connected to the top of the connecting arm. A guide block is fixedly installed at the top of the support rod. One side of the guide block close to the triangular guide plate is arranged in an isosceles triangle shape, and the inclined surface of the guide block corresponds to the inclined surface of the triangular guide plate.

[0016] In summary, the present application includes the following beneficial technical effects: Through the cooperation of the sample carrier mechanism and the sample injection mechanism, the device can flexibly inject different sample test tubes. During the sample injection, by starting the first motor, the carrier disk is driven to rotate, so that the sample test tube on the carrier assembly rotates to the lower part of the suction needle tube. Then, the second motor is started to drive the first lead screw to rotate in the guide rail, driving the slider to slide down, and the connecting arm and the automatic injection pump descend accordingly. The suction needle tube is inserted into the sample test tube, and the automatic injection pump is started to inject the sample into the mass spectrometer. After the sample injection is completed, the third motor drives the second bevel gear, which drives the second lead screw to displace the sliding block through meshing with the first bevel gear, pushing the carrier assembly and the sample test tube to move, realizing the injection of different sample test tubes. Throughout the sample injection process, the first motor drives the carrier disk to rotate, which can flexibly adjust the position of the carrier assembly, improving the flexibility and convenience of sample injection. The device can ensure the positioning and taking and placing of sample test tubes by arranging a limit mechanism and a driving mechanism to cooperate with each other. When positioning the sample test tube, the clamping plate is pushed open, the slide squeezes the limit spring, the two clamping plates are separated, and the test tube is placed in and then released. The limit spring is reset to push the slide and the clamping plate to clamp the test tube. The V-shaped clamping groove uses the inclined surface to stably clamp test tubes of different sizes. After the test tube is fixed, the driving component and the displacement component are started, and the first motor is cooperated to drive the bearing plate to rotate for sample injection adjustment. During the sample injection process, the third motor causes the second bevel gear and the first bevel gear to be linked, and the second lead screw is driven to move the sliding block outward, driving the concave bearing seat and the triangular guide plate to move. The triangular guide plate and the guide block cooperate to open the linkage frame, so that the slide moves outward, the limit spring contracts, and the clamping plate of the outermost bearing assembly moves outward, which is convenient for quickly taking and placing the sample test tube after injection, thereby improving the convenience of sample injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application; Figure 2 This is a schematic diagram of the front structure in an embodiment of the present application; Figure 3 It is a schematic diagram of a top view structure in an embodiment of the present application; Figure 4 is a schematic diagram of a top view of the sample carrying mechanism in an embodiment of the present application; Figure 5 is a schematic diagram of the structure of the sample carrying mechanism in the embodiment of the present application when viewed from the bottom; Figure 6 is a schematic diagram of the internal structure of the sample carrying mechanism in the embodiment of the present application; Figure 7 This is a schematic diagram of the structure of the bearing assembly in the embodiment of the present application; Figure 8 This is a schematic diagram of a top view of the structure of the bearing mechanism in a disassembled state in an embodiment of the present application; Figure 9 It is a schematic diagram of the structure of the supporting mechanism in the disassembled state when viewed from above in an embodiment of the present application.

[0018] Reference numerals: 1, base; 2, sample carrier mechanism; 21, substrate; 22, fixed plate; 23, first motor; 24, carrier plate; 25, displacement assembly; 251, chute; 252, second lead screw; 253, slider; 26, drive assembly; 261, mounting bracket; 262, square groove; 263, first bevel gear; 264, third motor; 265, second bevel gear; 27, carrier assembly; 271, concave carrier seat; 272, limiting assembly; 2721, frame; 2722, limiting spring; 2723, carriage; 2724, clamping plate; 2725, clamping groove; 2726, linkage frame; 2727, triangular guide plate; 2728, connecting arm; 2729, support rod; 27210, guide block; 273, sample test tube; 3, sample injection mechanism; 31, guide rail; 32, second motor; 33, first lead screw; 34, slider; 35, sample injection assembly; 351, fixed arm; 352, automatic injection pump; 353, aspiration syringe; 4, mass spectrometer body; 5, support frame. Detailed implementation manners

[0019] The following will further describe the present application in detail with reference to the Figures 1-9 accompanying drawings.

[0020] An embodiment of the present application discloses an integrated inductively coupled plasma mass spectrometer. As Figures 1-8 shown, it includes a base 1. A mass spectrometer body 4 is fixedly installed on the top of the base 1. A sample injection mechanism 3 is fixedly installed on the front of the mass spectrometer body 4. A sample carrier mechanism 2 is fixedly installed in the middle of the front of the base 1. The sample carrier mechanism 2 is arranged directly below the sample injection mechanism 3; The sample carrier mechanism 2 includes a substrate 21, the substrate 21 is fixedly installed in the middle of the front of the base 1, a fixing plate 22 is fixedly installed at the front end of the substrate 21, a first motor 23 is fixedly installed in the middle of the bottom of the fixing plate 22, a carrier plate 24 is fixedly installed on the top of the first motor 23, four displacement components 25 are installed on the carrier plate 24 in an equidistant and annular arrangement, a driving component 26 is fixedly installed in the middle of the top of the carrier plate 24, the output end of the driving component 26 is in transmission connection with the inner ends of the four displacement components 25, and a carrier component 27 is fixedly installed on the top of each displacement component 25. The substrate 21 is firmly installed in the middle of the front of the base 1, which provides a stable basic support for the entire sample carrier mechanism 2. At the front end of the substrate 21, the fixing plate 22 is fixedly installed, and the first motor 23 at the middle position of its bottom is one of the core components of the driving system. When the first motor 23 is started, the power generated by the motor is transmitted to the carrier plate 24 at the top, causing the carrier plate 24 to start rotating. On the carrier plate 24, the four displacement components 25 are installed in an equidistant and annular arrangement. As the carrier plate 24 rotates, these displacement components 25 will also synchronously perform circular motion around the central axis of the carrier plate 24. And in the exact middle of the top of the carrier plate 24, the driving component 26 is firmly installed here. The output end of the driving component 26 is in transmission connection with the inner ends of the four displacement components 25. When the driving component 26 is started and operates, the power generated by it will be transmitted to the relevant components inside the four displacement components 25 through a specific transmission method, such as gear transmission, chain transmission, etc. Taking the common screw-nut transmission as an example, the power will drive the screw in the displacement component 25 to rotate. Due to the thread fit between the screw and the nut, the nut will generate a linear displacement along the axial direction of the screw. And a carrier component 27 is fixedly installed on the top of each displacement component 25, and the linear displacement of the nut will drive the carrier component 27 to move synchronously, enabling the carrier component 27 to be adjusted between different positions. Through such coordinated operation, the sample carrier mechanism 2 can accurately move the sample placed on the carrier component 27 to directly below the sampling mechanism 3, which provides the necessary preliminary preparation work for the subsequent sampling mechanism 3 to smoothly obtain the sample and transport the sample into the mass spectrometer body 4 for analysis, ensuring the efficient progress of the entire mass spectrometry analysis process.

[0021] Please refer to Figures 4-9The bearing assembly 27 includes a concave bearing seat 271, which is fixedly installed on the top of the sliding block 253. Both sides of the concave bearing seat 271 are fixedly installed with limit assemblies 272. The inner end of the limit assembly 272 passes through the concave bearing seat 271 to clamp the sample tube 273. The limit assembly 272 includes a frame 2721, which is fixedly installed on both sides of the concave bearing seat 271. A limit spring 2722 is fixedly installed inside the frame 2721. A slide 2723 is fixedly installed at the end of the limit spring 2722. The end of the slide 2723 passes through the frame 2721 and is fixedly installed with a clamping plate 2724. The slide 2723 is slidably connected to both sides of the concave bearing seat 271, and the inner side of the clamping plate 2724 is fixedly installed. A clamping groove 2725 is provided at a spacing, and the top view shape of the clamping groove 2725 is set to be V-shaped. The sample test tube 273 is set on the inner side of the clamping groove 2725. A linkage frame 2726 is fixedly installed on the outer side of the slide 2723, and a triangular guide plate 2727 is fixedly installed on the inner side of the outer end of the linkage frame 2726. A connecting arm 2728 is fixedly installed at the bottom of the base plate 21, and a support rod 2729 is fixedly connected to the top of the connecting arm 2728. A guide block 27210 is fixedly installed on the top of the support rod 2729. The side of the guide block 27210 close to the triangular guide plate 2727 is set in an isosceles triangle. The inclined surface of the guide block 27210 corresponds to the inclined surface of the triangular guide plate 2727. The work of the bearing assembly 27 is based on the coordinated cooperation of various components. The concave bearing seat 2 71 is firmly installed on the top of the sliding block 253. As the sliding block 253 moves under the drive of the displacement assembly 25, the concave supporting seat 271 and the components connected thereto also move together. The limiting assemblies 272 installed on both sides of the concave supporting seat 271 are the key structures for clamping and releasing the sample test tube 273. When the sample test tube 273 needs to be placed, the operator manually pushes the clamping plate 2724 outward. At this time, the slide 2723 will slide outward synchronously along the slides on both sides of the concave supporting seat 271. In this process, the slide 2723 will squeeze the limiting spring 2722 installed inside the frame 2721, so that the limiting spring 2722 is in a compressed energy storage state, thereby causing the two clamping plates 2724 to separate from each other and open a certain angle. At this time The sample test tube 273 can be smoothly inserted between the two clamping plates 2724. When the sample test tube 273 is in place, the operator releases the clamping plate 2724, and the limit spring 2722 begins to release energy due to its own elasticity and resets from the compressed state. During the reset process, the limit spring 2722 pushes the slide 2723 to move inward, and the inward movement of the slide 2723 drives the clamping plate 2724 connected thereto to move inward, thereby firmly clamping and positioning the sample test tube 273. It is worth mentioning that the V-shaped clamping grooves 2725 arranged at equal intervals on the inner side of the clamping plate 2724 have a special shape design that can make full use of the mechanical principle of the inclined plane to fit closely to the outer side of the sample test tube 273. Regardless of the diameter of the sample test tube 273,The V-shaped clamping grooves 2725 can all provide stable clamping force to ensure that the sample test tube 273 remains fixed during the analysis process; In addition, there is a clever linkage relationship between the linkage frame 2726 fixedly installed on the outer side of the carriage 2723 and the triangular guide plate 2727 at its end, and the guide block 27210 at the top of the upper rod 2729 of the connecting arm 2728 at the bottom of the substrate 21. When the loading assembly 27 moves under the action of the displacement assembly 25, the linkage frame 2726 will move together with the carriage 2723, thereby driving the triangular guide plate 2727 to move synchronously. When the triangular guide plate 2727 moves to a position corresponding to the guide block 27210, since the side of the guide block 27210 close to the triangular guide plate 2727 is arranged in an isosceles triangle, and its inclined surface corresponds to the inclined surface of the triangular guide plate 2727, as the loading assembly 27 continues to move, the inclined surface of the triangular guide plate 2727 will gradually contact and interact with the inclined surface of the guide block 27210. Under this interaction, the triangular guide plate 2727 receives a lateral thrust from the inclined surface of the guide block 27210, thereby expanding the linkage frame 2726. The outward movement of the linkage frame 2726 drives the carriage 2723 to move outward again. The carriage 2723 squeezes the limit spring 2722 again to make it contract, and finally causes the clamping plate 2724 of the outermost loading assembly 27 to automatically move outward, realizing the release of the sample test tube 273, facilitating the operator to quickly take and place the sample test tube 273 that has completed the sample injection, and greatly improving the convenience and working efficiency of the sample injection operation of the entire device.

[0022] Please refer to Figures 4-6, the displacement component 25 includes a chute 251. The chutes 251 are arranged in an annular shape at equal intervals on the outer side of the bearing plate 24. A second lead screw 252 is rotatably connected to the inside of each chute 251. A sliding block 253 is threadedly connected to the outer surface of the second lead screw 252. The top of the sliding block 253 is fixedly connected to the bottom of the bearing component 27. The driving component 26 includes a mounting frame 261 and a square groove 262. The mounting frame 261 is fixedly installed in the middle of the top of the bearing plate 24. The square groove 262 is opened in the middle of the top of the bearing plate 24. First bevel gears 263 are rotatably connected in the square groove 262 in a 2×2 arrangement at equal intervals. A third motor 264 is fixedly installed on the top of the mounting frame 261. The output end of the third motor 264 passes through the mounting frame 261 and is fixedly installed with a second bevel gear 265. The first bevel gear 263 and the second bevel gear 265 are meshed. The outer side of the first bevel gear 263 is connected to the inner end of the second lead screw 252. The cross-sectional shapes of the inner cavities of the chutes 251 and the guide rails 31 are both set to a convex shape. The overall shapes of the slider 34 and the sliding block 253 are also both set to a convex shape. Wear-resistant gaskets are fixedly connected to the outer surfaces of the slider 34 and the sliding block 253. In the displacement component 25, the chutes 251 are distributed in an annular shape at equal intervals on the outer side of the bearing plate 24. A second lead screw 252 is rotatably connected to the inside of each chute 251. The second lead screw 252 is threadedly connected to the sliding block 253. The top of the sliding block 253 is firmly connected to the bottom of the bearing component 27. When the second lead screw 252 rotates, based on the principle of screw drive, the sliding block 253 will generate a linear displacement along the direction of the chute 251, thereby driving the bearing component 27 to move synchronously. The driving component 26 is the key part that provides power and realizes power transmission. The mounting frame 261 is fixed in the middle of the top of the bearing plate 24. The third motor 264 installed above it provides a power source for the entire driving system. After the third motor 264 is started, its output end drives the connected second bevel gear 265 to rotate. In the square groove 262 opened in the middle of the top of the bearing plate 24, the first bevel gears 263 arranged in a 2×2 arrangement at equal intervals mesh with the second bevel gear 265. The rotation of the second bevel gear 265 drives the corresponding first bevel gear 263 to rotate synchronously through the meshing action. The outer side of each first bevel gear 263 is connected to the inner end of the corresponding second lead screw 252. In this way, the rotation of the first bevel gear 263 drives the rotation of the second lead screw 252, thereby realizing the power transmission to the second lead screw 252 in the displacement component 25. In addition, the cross-sectional shapes of the inner cavities of the chutes 251 and the guide rails 31 and the overall shapes of the slider 34 and the sliding block 253 are all designed as a convex shape. This special shape design can effectively prevent the slider 34 and the sliding block 253 from disengaging during the movement process, ensuring the stability and reliability of the movement. At the same time, wear-resistant gaskets are fixedly connected to the outer surfaces of the slider 34 and the sliding block 253. The wear-resistant gaskets can reduce the frictional loss between the slider 34, the sliding block 253 and the chutes 251, the guide rails 31.Reduce the wear of components, extend the service life of the equipment, ensure long-term stable operation of the device, and accurately adjust the position of the carrier component 27 to meet the injection requirements of the mass spectrometer for samples at different positions.

[0023] Please refer to Figures 1-3 The injection mechanism 3 includes a guide rail 31, which is fixedly installed on the front side of the mass spectrometer body 4. A second motor 32 is fixedly connected to the top of the guide rail 31. A first screw rod 33 is fixedly installed on the output end of the second motor 32 through the guide rail 31. The first screw rod 33 is rotatably connected to the inside of the guide rail 31. A slider 34 is threadedly connected to the outer surface of the first screw rod 33. An injection assembly 35 is fixedly connected to the front of the slider 34. The injection assembly 35 includes a fixed arm 351, which is fixedly connected to the front of the slider 34. The top view of the fixed arm 351 is L-shaped. An automatic injection pump 352 is fixedly connected to the front end of the fixed arm 351. The input end of the automatic injection pump 352 is fixedly connected to the suction needle 353. The output end of the automatic injection pump 352 The output end is connected to the interior of the mass spectrometer body 4, and support frames 5 are fixedly installed on both sides of the bottom of the base 1. The side shape of the support frame 5 is an isosceles trapezoid, and the external edges and corners of the support frame 5 are all set to arc shapes. During use, the second motor 32 connected to the top of the guide rail 31 is the power source of the injection mechanism 3. When the second motor 32 is started, its output end generates rotational power, which drives the first screw rod 33 connected to it to rotate inside the guide rail 31. Since the first screw rod 33 is connected to the slider 34 through a threaded connection, according to the principle of threaded transmission, the rotation of the screw rod will cause the slider 34 to make a linear displacement along the guide rail 31, and the injection assembly 35 fixedly connected to the front of the slider 34 will move synchronously with the movement of the slider 34. The fixed arm 351 in the injection assembly 35 is L shaped, one end of which is firmly connected to the front of the slider 34, and the other end is connected to the automatic injection pump 352. When the slider 34 moves to a suitable position on the guide rail 31, the fixed arm 351 drives the automatic injection pump 352 to reach the top of the sample. The suction needle 353 connected to the input end of the automatic injection pump 352 is now aimed at the sample. After the automatic injection pump 352 is started, the sample is sucked in through the suction needle 353 by utilizing the pressure difference inside it, and then the sample is injected into the mass spectrometer body 4 through the output end to complete the sample injection operation. The support frame 5 on both sides of the bottom of the base 1 has an isosceles trapezoidal side surface, which not only provides stable support for the entire device, but also keeps the injection mechanism 3 stable during operation and is not easy to shake or tip over. At the same time, its external edges and corners are designed to be arc-shaped, which can effectively avoid the potential safety hazards caused by sharp corners, improve the safety and reliability of the device during use, and ensure the smooth progress of the injection process.

[0024] The implementation principle of an integrated inductively coupled plasma mass spectrometer according to an embodiment of the present application is as follows: Through the coordinated operation of the sample carrier mechanism 2 and the sample introduction mechanism 3, the device realizes efficient and automatic sample introduction. When the first motor 23 is started, the motor rotates to drive the carrier disk 24 to rotate. The rotation of the carrier disk 24 further drives the synchronous rotation of each carrier component 27 on its top, thereby adjusting the sample tube 273 to directly below the suction needle tube 353. At this time, the second motor 32 is started, and the second motor 32 drives the first lead screw 33 to rotate. The first lead screw 33 rotates within the guide rail 31, pushing the slider 34 to slide downward along the guide rail 31. The downward movement of the slider 34 drives the connecting arm 2728 to descend, and further causes the automatic injection pump 352 to descend, prompting the suction needle tube 353 to insert into the sample tube 273. Subsequently, the automatic injection pump 352 is started, and the sample can be injected into the mass spectrometer body 4. After the sample introduction is completed, the third motor 264 is started, and the third motor 264 drives the second bevel gear 265 to rotate. Since the second bevel gear 265 is meshed with the first bevel gear 263, the rotation of the second bevel gear 265 drives the first bevel gear 263 to rotate synchronously. The rotation of the first bevel gear 263 drives the second lead screw 252, causing the sliding block 253 in the chute 251 to displace. The sliding of the sliding block 253 pushes the carrier component 27 to move towards the mass spectrometer body 4 side, realizing the position change of the sample tube 273, so that the sample tubes 273 at different positions on the carrier component 27 can be sampled. During the entire sample introduction process, by driving the carrier disk 24 to continuously rotate through the first motor 23, the positions of each carrier component 27 can be flexibly adjusted, significantly improving the flexibility and convenience of the overall sample introduction of the device; During the operation of the device, the limiting mechanism and the driving mechanism cooperate with each other to achieve accurate positioning and convenient placement of the sample test tube 273. When the sample test tube 273 needs to be positioned, the sample test tube 273 is placed between the clamping plates 2724. First, the clamping plates 2724 are pushed outward. The outward movement of the clamping plates 2724 pushes the slide 2723 to squeeze the limiting spring 2722, so that the limiting spring 2722 is in a compressed state. At this time, the two clamping plates 2724 are separated and opened, which is convenient for inserting the sample test tube 273. After the clamping plates 2724 are released, the limiting spring 272 2 reset, push the slide 2723 to move inward, the inward movement of the slide 2723 drives the clamping plate 2724 to move inward, clamps and positions the sample tube 273, and the clamping groove 2725 is designed to be V-shaped, and its internal inclined surface can be closely fitted to the outer side of the sample tube 273. This V-shaped clamping groove 2725 structure can stably clamp sample tubes 273 of different specifications. After the sample tube 273 is clamped and fixed, the driving component 26 is started to drive the displacement component 25 to operate, and the first motor 23 is combined to drive the carrier plate 24 to rotate to achieve sample injection adjustment. The joint and reciprocating stretching motion design can flexibly adapt to the sampling requirements of test tubes in different positions. In addition, during the sampling process, when the third motor 264 drives the second bevel gear 265 to mesh with the first bevel gear 263, each second screw rod 252 is synchronously driven to move the sliding block 253 outward. The sliding block 253 moves outward and drives the concave bearing seat 271 on its top to move outward synchronously. The triangular guide plate 2727 at the end of the linkage frame 2726 on the outer side of the slide 2723 on the concave bearing seat 271 moves accordingly, and the inclined surface of the triangular guide plate 2727 is aligned with the guide on the support rod 2729. The sliding block 253 contacts the block 27210, and under the guiding action of the inclined surfaces of the triangular guide plate 2727 and the guiding block 27210, the second screw rod 252 drives the sliding block 253 to move outward, and the two linkage frames 2726 are stretched open. The outward movement of the linkage frame 2726 drives the sliding frame 2723 to move outward, squeezing the limit spring 2722 to shrink it. At this time, the clamping plate 2724 located at the outermost end of the load-bearing component 27 automatically moves outward, so as to facilitate the quick removal of the sample tube 273 that has been injected. This linkage design further improves the convenience of injection of the device during the overall application process.

[0025] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An integrated inductively coupled plasma mass spectrometer, characterized in that; It includes a base (1), on the top of which a mass spectrometer body (4) is fixedly installed. On the front of the mass spectrometer body (4), a sample injection mechanism (3) is fixedly installed. In the middle of the front of the base (1), a sample carrier mechanism (2) is fixedly installed, and the sample carrier mechanism (2) is arranged directly below the sample injection mechanism (3). The sample carrier mechanism (2) includes a substrate (21), which is fixedly installed in the middle of the front of the base (1). At the front end of the substrate (21), a fixing plate (22) is fixedly installed. In the middle of the bottom of the fixing plate (22), a first motor (23) is fixedly installed. On the top of the first motor (23), a carrier plate (24) is fixedly installed. Four displacement components (25) are installed on the carrier plate (24) in an equidistant and annular arrangement. In the middle of the top of the carrier plate (24), a driving component (26) is fixedly installed. The output end of the driving component (26) is in transmission connection with the inner ends of the four displacement components (25), and carrier components (27) are fixedly installed on the tops of the displacement components (25).

2. An integrated inductively coupled plasma mass spectrometer according to claim 1, characterized in that: The sample injection mechanism (3) includes a guide rail (31), which is fixedly installed on one side of the front of the mass spectrometer body (4). On the top of the guide rail (31), a second motor (32) is fixedly connected. The output end of the second motor (32) penetrates through the guide rail (31) and a first lead screw (33) is fixedly installed. The first lead screw (33) is rotatably connected inside the guide rail (31). A slider (34) is threadedly connected to the outer surface of the first lead screw (33), and a sample injection component (35) is fixedly connected to the front of the slider (34).

3. An integrated inductively coupled plasma mass spectrometer according to claim 2, characterized in that: The sample injection component (35) includes a fixed arm (351), which is fixedly connected to the front of the slider (34). The top view shape of the fixed arm (351) is L-shaped. At the front end of the fixed arm (351), an automatic injection pump (352) is fixedly connected. The input end of the automatic injection pump (352) is fixedly connected to a suction needle tube (353), and the output end of the automatic injection pump (352) is communicated with the inside of the mass spectrometer body (4).

4. An integrated inductively coupled plasma mass spectrometer according to claim 3, characterized in that: On both sides of the bottom of the base (1), support frames (5) are fixedly installed. The side shape of the support frames (5) is an isosceles trapezoid, and the outer edges of the support frames (5) are all set to be arc-shaped.

5. The integrated inductively coupled plasma mass spectrometer according to claim 4, characterized in that: The displacement component (25) includes a chute (251), which is opened on the outside of the carrier plate (24) in an equidistant and annular arrangement. A second lead screw (252) is rotatably connected inside each chute (251). A sliding block (253) is threadedly connected to the outer surface of the second lead screw (252), and the top of the sliding block (253) is fixedly connected to the bottom of the carrier component (27).

6. An integrated inductively coupled plasma mass spectrometer according to claim 5, characterized in that: The driving component (26) includes a mounting frame (261) and a square groove (262). The mounting frame (261) is fixedly installed in the middle of the top of the bearing plate (24). The square groove (262) is opened in the middle of the top of the bearing plate (24). First bevel gears (263) are rotatably connected in the square groove (262) in a 2*2 arrangement at equal intervals. A third motor (264) is fixedly installed on the top of the mounting frame (261). The output end of the third motor (264) penetrates through the mounting frame (261) and is fixedly installed with a second bevel gear (265). The first bevel gear (263) and the second bevel gear (265) are meshed and connected. The outer side of the first bevel gear (263) is connected to the inner end of the second lead screw (252).

7. An integrated inductively coupled plasma mass spectrometer according to claim 6, wherein: The cross-sectional shapes of the internal cavities of the chute (251) and the guide rail (31) are both set to be convex-shaped. The overall shapes of the slider (34) and the sliding block (253) are also both set to be convex-shaped. Wear-resistant gaskets are fixedly connected to the outer surfaces of the slider (34) and the sliding block (253).

8. An integrated inductively coupled plasma mass spectrometer according to claim 5, wherein: The bearing component (27) includes a concave bearing seat (271). The concave bearing seat (271) is fixedly installed on the top of the sliding block (253). Limiting components (272) are fixedly installed on both sides of the concave bearing seat (271). The inner ends of the limiting components (272) penetrate through the concave bearing seat (271) to clamp a sample test tube (273).

9. An integrated inductively coupled plasma mass spectrometer according to claim 8, characterized in that: The limiting component (272) includes a frame (2721). The frame (2721) is fixedly installed on both sides of the concave bearing seat (271). A limiting spring (2722) is fixedly installed inside the frame (2721). A sliding frame (2723) is fixedly installed at the end of the limiting spring (2722). The end of the sliding frame (2723) penetrates through the frame (2721) and is fixedly installed with a clamping plate (2724). The sliding frame (2723) is slidably connected to both sides of the concave bearing seat (271). Clamping grooves (2725) are opened at equal intervals on the inner side of the clamping plate (2724). The top view shape of the clamping groove (2725) is set to be V-shaped. The sample test tube (273) is arranged inside the clamping groove (2725).

10. The integrated inductively coupled plasma mass spectrometer according to claim 9, characterized in that: A linkage frame (2726) is fixedly installed on the outer side of the sliding frame (2723). A triangular guide plate (2727) is fixedly installed on the inner side of the outer end of the linkage frame (2726). A connecting arm (2728) is fixedly installed at the bottom of the substrate (21). A support rod (2729) is fixedly connected to the top of the connecting arm (2728). A guide block (27210) is fixedly installed on the top of the support rod (2729). One side of the guide block (27210) close to the triangular guide plate (2727) is arranged in an isosceles triangle shape. The inclined surface of the guide block (27210) corresponds to the inclined surface of the triangular guide plate (2727).

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