Coal sample testing machine based on laser-induced breakdown spectroscopy technology

Abstract

The invention discloses a coal sample testing machine based on a laser-induced breakdown spectroscopy technology, and relates to the technical field of coal mine detection.The coal sample testing machine comprises a testing box, a testing module is arranged in the testing box, a display module is arranged at the top of the testing box, and a telescopic part is fixedly arranged on the inner bottom wall of the testing box; a guide rail is fixedly arranged at the extending end of the telescopic piece, and a gear rod is rotationally arranged in the guide rail. A guide rail is pulled to move downwards through a telescopic piece, at the moment, a first toothed plate drives a gear rod to rotate and controls two clamping plates to contract, so that a sample is clamped and fixed through cooperation of the two clamping plates, and then the sample is detected through a test module, and therefore the sample is more convenient to detect; when the telescopic piece pulls the guide rail to move downwards, the steel cable is pulled to move synchronously, then the second toothed plate is pulled to move downwards through the steel cable, at the moment, the second toothed plate drives the second gear and the cover plate to deflect downwards, and therefore the opening is automatically sealed through the cover plate.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine detection, in particular to a coal sample testing machine based on laser induced breakdown spectroscopy technology. Background Art

[0002] At present, coal sampling in major power plants across the country is still carried out by traditional manual testing, which has a long overall testing cycle and a relatively complicated process. Therefore, it is particularly important to reduce manual intervention, shorten the overall testing time, and improve the accuracy of test data.

[0003] Laser induced breakdown spectroscopy is a detection technology with great application advantages. LIBS is known as the "Star of Chemical Analysis" internationally due to its outstanding advantages such as fast detection speed, ability to measure solid, liquid and gaseous samples, ability to perform full element analysis and convenience for on-site in-situ measurement. It is one of the research and application hotspots in the field of international chemical analysis and has shown great application prospects in many fields such as industrial analysis, pollutant detection, mineral exploration, cultural relics research, aerospace and military. When some existing test machines test samples, it is necessary to first fix the samples on a test platform. The samples are generally fixed by a clamp and then tested by the test equipment. Therefore, it is troublesome to test the samples. Summary of the invention

[0004] In order to improve the problem that some of the existing testing machines mentioned above need to first fix the samples on the testing platform when testing the samples, and the samples are generally fixed by clamps, and then tested by testing equipment, so the sample testing is rather troublesome, the present invention provides a coal sample testing machine based on laser induced breakdown spectroscopy technology.

[0005] The present invention provides a coal sample testing machine based on laser induced breakdown spectroscopy technology, which adopts the following technical solutions: A coal sample testing machine based on laser induced breakdown spectroscopy technology comprises a testing box, a test module is arranged inside the testing box, a display module is arranged on the top of the testing box, a telescopic part is fixedly arranged on the inner bottom wall of the testing box, a guide rail is fixedly arranged on the protruding end of the telescopic part, a gear rod is rotatably arranged inside the guide rail, two clamping plates are symmetrically arranged on the gear rod, the clamping plates are movably arranged in the guide rail, a first tooth plate opposite to the gear rod is arranged on the inner wall of the testing box, and the gear rod is meshed with the first tooth plate.

[0006] Through the above technical solution, the guide rail can be pushed to the outside of the test box through the telescopic part, so that the operator can place the sample on the guide rail, and then pull the guide rail down through the telescopic part. At this time, the gear rod is driven to rotate by the first tooth plate and the two clamping plates are controlled to retract, so that the sample is clamped and fixed by the cooperation of the two clamping plates, and then the sample is tested by the test module, and the detected parameters are displayed by the display module.

[0007] Optionally, in the above-mentioned coal sample testing machine based on laser induced breakdown spectroscopy technology, an opening is provided on the top of the testing box, a cover plate is hinged in the opening through a hinge shaft, and a second gear is fixedly provided at both ends of the hinge shaft.

[0008] Through the above technical solution, the guide rail can be moved to the outside of the test box through the opening, so that the operator can place the sample on the guide rail, and the opening can be sealed through the cover plate.

[0009] Optionally, in the above-mentioned coal sample testing machine based on laser induced breakdown spectroscopy technology, two slide grooves are symmetrically opened on the inner wall of the testing box, and second tooth plates are movably arranged in the two slide grooves, and the second tooth plates are connected to the inner bottom wall of the slide grooves through springs, and the second tooth plates are meshed with the second gear, and the lower end of the second tooth plate is connected to the outer wall of the guide rail by setting a steel cable.

[0010] Through the above technical solution, the second tooth plate can be easily installed through the sliding groove. When the telescopic member pulls the guide rail downward, the steel cable is pulled to move synchronously, and then the second tooth plate is pulled downward by the steel cable. At this time, the second gear and the cover plate are driven downward by the second tooth plate, so that the opening is automatically sealed by the cover plate.

[0011] Optionally, in the above-mentioned coal sample testing machine based on laser induced breakdown spectroscopy technology, a limit block is fixedly provided on the outer wall of the second tooth plate, the limit block is located in the slide groove and slidably cooperates with the inner wall of the slide groove, and the shape of the limit block is a "convex" shape.

[0012] Through the above technical solution, when the steel cable pulls the second tooth plate to move, the limiting block is used to increase the stability of the second tooth plate during movement.

[0013] Optionally, in the above-mentioned coal sample testing machine based on laser induced breakdown spectroscopy technology, the test module includes a pulse laser, a focusing lens and a spectrometer, and the pulse laser, focusing lens and spectrometer are all arranged inside the test box. The pulse laser emits pulse laser and passes through the focusing lens to detect the sample, and a charge coupled device is arranged in the spectrometer.

[0014] Through the above technical solution, a pulse laser is emitted by a pulse laser and focused by a focusing lens. The pulse laser is then irradiated on the sample. The spectrometer then collects the spectral information through a collection lens and transmits it to the spectrometer through an optical fiber. The image is then converted into a digital signal through a charge-coupled device.

[0015] Optionally, in the above-mentioned coal sample testing machine based on laser induced breakdown spectroscopy technology, the display module is a computer, and the signal input end of the display module is electrically connected to the signal output end of the spectrometer through a data line.

[0016] Through the above technical solution, the charge-coupled device in the spectrometer converts the image into a digital signal and transmits the data to the computer, so that the detected data can be displayed through the computer.

[0017] Optionally, in the above-mentioned coal sample testing machine based on laser induced breakdown spectroscopy technology, two through grooves are opened on the top surface of the guide rail, the two clamping plates are movably arranged in the two through grooves respectively, and a placement plate is fixedly arranged on the top of the guide rail.

[0018] Through the above technical solution, the clamping plates can be easily limited by the through grooves, and when the gear rod rotates, the two clamping plates can be easily controlled to slide along the inner wall of the through grooves.

[0019] Optionally, in the above-mentioned coal sample testing machine based on laser induced breakdown spectroscopy technology, a fan is arranged at the bottom of the placement plate, an air guide cavity is opened in the placement plate, and a plurality of nozzles are arranged at the top of the placement plate, and the air inlet end of the nozzle is connected to the air guide cavity.

[0020] Through the above technical solution, the airflow is easily transported to the air guide cavity through the fan, and then sprayed onto the surface of the sample through the nozzle, so as to clear the debris on the surface of the sample.

[0021] Optionally, in the above-mentioned coal sample testing machine based on laser induced breakdown spectroscopy technology, first gears opposite to the first tooth plate are fixedly provided at both ends of the gear rod, the first gear is meshed with the first tooth plate, and the gear rod is symmetrically provided with two sections of external threads with opposite thread directions.

[0022] Through the above technical solution, when the guide rail moves up and down, the first gear and the gear rod are driven to rotate through the first tooth plate.

[0023] Optionally, in the above-mentioned coal sample testing machine based on laser induced breakdown spectroscopy technology, an internal threaded hole corresponding to the external thread is opened at the lower end of the clamping plate, and the clamping plate is threadedly connected to the gear rod through the internal threaded hole, and a plurality of rubber strips are fixed on the opposite sides of the two clamping plates.

[0024] Through the above technical solution, the sample is clamped when the two clamping plates are contracted, and the possibility of damage to the sample caused by the clamping plates is reduced by the rubber strip.

[0025] In summary, the present invention includes at least one of the following beneficial effects: The guide rail is pulled downward by the telescopic member, and the gear rod is driven to rotate by the first tooth plate and the two clamping plates are controlled to contract, so that the sample is clamped and fixed by the cooperation of the two clamping plates, and then the sample is tested by the test module, so it is more convenient to test the sample; When the telescopic member pulls the guide rail downward, it pulls the steel cable to move synchronously, and then pulls the second tooth plate downward through the steel cable. At this time, the second tooth plate drives the second gear and the cover plate to deflect downward, so that the opening is automatically sealed through the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a partial three-dimensional expanded structural cross-sectional view of the present invention; Figure 3 It is a partial three-dimensional structural cross-sectional view of the present invention.

[0027] In the figure: 1. test box; 11. opening; 12. cover plate; 13. second gear; 14. slide groove; 15. second tooth plate; 16. spring; 17. steel cable; 18. limit block; 2. test module; 21. pulse laser; 22. focusing lens; 23. spectrometer; 3. display module; 4. telescopic part; 5. guide rail; 51. through groove; 52. placement plate; 53. fan; 54. air guide cavity; 55. nozzle; 6. gear rod; 61. first gear; 7. clamping plate; 71. rubber strip; 8. first tooth plate. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-3 The present invention is described in further detail.

[0029] Please refer to the attached figure in the instruction manual Figure 1 , Figure 2 and Figure 3An embodiment of the present invention is as follows: a coal sample testing machine based on laser induced breakdown spectroscopy technology, comprising a testing box 1, a testing module 2 is arranged inside the testing box 1, the testing module 2 comprises a pulse laser 21, a focusing lens 22 and a spectrometer 23, the pulse laser 21, the focusing lens 22 and the spectrometer 23 are all arranged inside the testing box 1, the pulse laser 21 emits a pulse laser and passes through the focusing lens 22 to detect the sample, a charge coupled device is arranged in the spectrometer 23, the pulse laser 21 emits a pulse laser and focuses the pulse laser through the focusing lens 22, then the pulse laser is irradiated on the sample, and under the action of the strong pulse laser, the sample The material on the surface is excited to become plasma, and the plasma radiates characteristic spectral lines of the elements in the sample being tested during the cooling and attenuation process. The wavelength and intensity information respectively contain the type and concentration information of the element of the analysis object. Then the spectrometer 23 collects the spectral information through the collection lens and transmits it to the spectrometer 23 through the optical fiber. Then the image is converted into a digital signal through the charge coupled element. Laser induced breakdown spectroscopy technology is an existing technology that can detect parameters such as ash content, moisture content, sulfur content, volatile matter, bonding index, calorific value, and gelatin layer thickness of the sample, and by establishing a data model and repeatedly comparing the test data with the data model, the accuracy of the test data is increased.

[0030] A display module 3 is provided on the top of the test box 1. The display module 3 is a computer. The signal input end of the display module 3 is electrically connected to the signal output end of the spectrometer 23 through a data line. The charge-coupled element in the spectrometer 23 converts the image into a digital signal and transmits the data to the computer, so that the detected data is displayed through the computer, which makes it convenient for the operator to view the parameters of the sample.

[0031] A telescopic member 4 is fixedly provided on the inner bottom wall of the test box 1, and a guide rail 5 is fixedly provided on the protruding end of the telescopic member 4. The guide rail 5 can be pushed to the outside of the test box 1 through the telescopic member 4, so that the operator can place the sample on the guide rail 5, and then pull the guide rail 5 downward through the telescopic member 4, thereby prompting the sample to be moved into the test box 1 for testing.

[0032] A gear rod 6 is rotatably provided inside the guide rail 5, and two clamping plates 7 are symmetrically provided on the gear rod 6. The clamping plates 7 are movably provided in the guide rail 5. Two through grooves 51 are provided on the top surface of the guide rail 5. The two clamping plates 7 are movably provided in the two through grooves 51 respectively. A placement plate 52 is fixedly provided on the top of the guide rail 5. The through grooves 51 are convenient for limiting the clamping plates 7. At this time, when the gear rod 6 rotates, it is convenient to control the two clamping plates 7 to slide along the inner wall of the through groove 51, and the placement plate 52 is convenient for placing the sample.

[0033] A fan 53 is provided at the bottom of the placement plate 52, an air guide cavity 54 is opened in the placement plate 52, and a plurality of nozzles 55 are provided at the top of the placement plate 52. The air inlet end of the nozzle 55 is connected with the air guide cavity 54. The air flow is conveniently transported to the air guide cavity 54 through the fan 53, and then sprayed onto the surface of the sample through the nozzle 55, so as to blow away the debris on the surface of the sample, thereby reducing the possibility that the debris affects the accuracy of sample detection.

[0034] The inner wall of the test box 1 is provided with a first tooth plate 8 opposite to the gear rod 6, and the gear rod 6 is meshed with the first tooth plate 8. First gears 61 opposite to the first tooth plate 8 are fixedly provided at both ends of the gear rod 6, and the first gear 61 is meshed with the first tooth plate 8. The gear rod 6 is symmetrically provided with two sections of external threads with opposite thread directions. When the guide rail 5 moves up and down, the first tooth plate 8 is used to drive the first gear 61 and the gear rod 6 to rotate. When the gear rod 6 rotates, the two clamping plates 7 are prompted to move in opposite directions through the two sections of external threads with opposite thread directions, so that the sample can be clamped and placed through the two clamping plates 7.

[0035] An internal threaded hole corresponding to the external thread is provided at the lower end of the clamping plate 7, and the clamping plate 7 is threadedly connected to the gear rod 6 through the internal threaded hole. A plurality of rubber strips 71 are fixedly provided on opposite sides of the two clamping plates 7. When the gear rod 6 rotates, the two clamping plates 7 shrink or expand at the same time. When the two clamping plates 7 shrink, the sample is clamped, and the possibility of damage to the sample caused by the clamping plates 7 is reduced by the rubber strips 71.

[0036] It should be noted that an opening 11 is provided on the top of the test box 1, and a cover plate 12 is hinged in the opening 11 through a hinge shaft, and a second gear 13 is fixedly provided at both ends of the hinge shaft. The guide rail 5 can be moved to the outside of the test box 1 through the opening 11, so that the operator can place the sample on the guide rail 5, and the opening 11 can be sealed through the cover plate 12, thereby reducing the possibility of debris entering the test box 1 through the opening 11.

[0037] The inner wall of the test box 1 is symmetrically provided with two slide grooves 14, and the second tooth plate 15 is movably arranged in the two slide grooves 14. The second tooth plate 15 is connected to the inner bottom wall of the slide groove 14 through a spring 16, and the second tooth plate 15 is meshed with the second gear 13. The lower end of the second tooth plate 15 is connected to the outer wall of the guide rail 5 by setting a steel cable 17. The second tooth plate 15 is conveniently installed through the slide groove 14. When the telescopic member 4 pulls the guide rail 5 downward, the steel cable 17 is pulled to move synchronously, and then the second tooth plate 15 is pulled downward by the steel cable 17. At this time, the second gear 13 and the cover plate 12 are driven to deflect downward by the second tooth plate 15, so that the opening 11 is automatically sealed by the cover plate 12; When the telescopic member 4 pushes the guide rail 5 upward, the steel cable 17 loses its tension, and the spring 16 facilitates the second toothed plate 15 to move upward, and the second toothed plate 15 drives the second gear 13 and the cover plate 12 to deflect upward, thereby prompting the opening 11 to open.

[0038] A limit block 18 is fixedly provided on the outer wall of the second tooth plate 15. The limit block 18 is located in the slide groove 14 and slidably cooperates with the inner wall of the slide groove 14. The limit block 18 is in a "convex" shape. When the steel cable 17 pulls the second tooth plate 15 to move, the limit block 18 is used to increase the stability of the second tooth plate 15 during movement, while reducing the possibility of the second tooth plate 15 falling off from the slide groove 14.

[0039] Working principle: When using the coal sample testing machine based on laser induced breakdown spectroscopy technology, the guide rail 5 is pushed to the outside of the test box 1 through the telescopic part 4, so that the operator can place the sample on the guide rail 5, and then pull the guide rail 5 down through the telescopic part 4. At this time, the gear rod 6 is driven to rotate by the first tooth plate 8 and the two clamping plates 7 are controlled to contract, so that the sample is clamped and fixed by the two clamping plates 7. Then the sample is tested by the test module 2, and the detected parameters are displayed by the display module 3. The two clamping plates 7 are used to reduce the possibility of sample shaking during testing to affect the detection accuracy, and it is more convenient to test the sample.

[0040] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A coal sample testing machine based on laser induced breakdown spectroscopy technology, comprising a testing box (1), characterized in that: The test box (1) is provided with a test module (2) inside, the top of the test box (1) is provided with a display module (3), the inner bottom wall of the test box (1) is fixedly provided with a telescopic member (4), the extended end of the telescopic member (4) is fixedly provided with a guide rail (5), the inner part of the guide rail (5) is provided with a gear rod (6) for rotation, the gear rod (6) is symmetrically provided with two clamping plates (7), the clamping plates (7) are movably provided in the guide rail (5), the inner wall of the test box (1) is provided with a first tooth plate (8) opposite to the gear rod (6), and the gear rod (6) is meshed with the first tooth plate (8).

2. The coal sample testing machine based on laser induced breakdown spectroscopy technology according to claim 1 is characterized by: The top of the test box (1) is provided with an opening (11), a cover plate (12) is hingedly connected in the opening (11) via a hinge shaft, and second gears (13) are fixedly provided at both ends of the hinge shaft.

3. The coal sample testing machine based on laser induced breakdown spectroscopy technology according to claim 2 is characterized in that: The inner wall of the test box (1) is symmetrically provided with two slide grooves (14), and a second tooth plate (15) is movably provided in each of the two slide grooves (14). The second tooth plate (15) is connected to the inner bottom wall of the slide groove (14) via a spring (16), and the second tooth plate (15) is meshed with the second gear (13). The lower end of the second tooth plate (15) is connected to the outer wall of the guide rail (5) via a steel cable (17).

4. The coal sample testing machine based on laser induced breakdown spectroscopy technology according to claim 3 is characterized by: A limit block (18) is fixedly provided on the outer wall of the second tooth plate (15); the limit block (18) is located in the slide groove (14) and slidably cooperates with the inner wall of the slide groove (14); the limit block (18) is in the shape of a "convex" character.

5. The coal sample testing machine based on laser induced breakdown spectroscopy technology according to claim 1 is characterized in that: The test module (2) comprises a pulse laser (21), a focusing lens (22) and a spectrometer (23); the pulse laser (21), the focusing lens (22) and the spectrometer (23) are all arranged inside the test box (1); the pulse laser (21) emits pulse laser light and passes through the focusing lens (22) to detect the sample; and a charge coupled device is arranged inside the spectrometer (23).

6. The coal sample testing machine based on laser induced breakdown spectroscopy technology according to claim 5 is characterized by: The display module (3) is a computer, and the signal input end of the display module (3) is electrically connected to the signal output end of the spectrometer (23) via a data line.

7. The coal sample testing machine based on laser induced breakdown spectroscopy technology according to claim 1 is characterized by: The top surface of the guide rail (5) is provided with two through slots (51), the two clamping plates (7) are movably arranged in the two through slots (51) respectively, and a placement plate (52) is fixedly arranged on the top of the guide rail (5).

8. The coal sample testing machine based on laser induced breakdown spectroscopy technology according to claim 7 is characterized in that: A fan (53) is provided at the bottom of the placement plate (52), an air guide cavity (54) is provided in the placement plate (52), and a plurality of nozzles (55) are provided at the top of the placement plate (52), wherein the air inlet ends of the nozzles (55) are in communication with the air guide cavity (54).

9. The coal sample testing machine based on laser induced breakdown spectroscopy technology according to claim 1 is characterized by: A first gear (61) is fixedly provided at both ends of the gear rod (6) and is opposite to the first toothed plate (8). The first gear (61) meshes with the first toothed plate (8). The gear rod (6) is symmetrically provided with two sections of external threads with opposite thread directions.

10. The coal sample testing machine based on laser induced breakdown spectroscopy technology according to claim 1 is characterized by: An internal thread hole corresponding to the external thread is formed at the lower end of the clamping plate (7), and the clamping plate (7) is threadedly connected to the gear rod (6) via the internal thread hole. A plurality of rubber strips (71) are fixedly provided on opposite sides of the two clamping plates (7).

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