Optical detection equipment for purity of petroleum coke and detection method thereof

Abstract

The present application relates to the technical field of petroleum coke detection, and particularly relates to a petroleum coke purity optical detection device and a detection method thereof, which comprises a spectrum detection machine, a machine cover and a sample fixture, a detection frame is fixedly connected to the bottom end of the spectrum detection machine, the detection frame is arranged above a detection unit of the spectrum detection machine, a disc is fixedly connected to the top end of the detection frame, a cross groove is formed in the top end of the disc, and a rotating ring is rotatably connected to the outer side of the detection frame, the present application is provided with a storage cylinder on the machine cover, and a lifting clamping material taking mechanism is arranged on both sides of the storage cylinder, a detection personnel only needs to put multiple sample fixtures into the storage cylinder, the material taking mechanism can automatically take out the sample fixture at the bottom of the storage cylinder and release the bottom limiting, then the sample fixture is accurately placed on the detection frame for infrared spectrum detection, after the detection is completed, the sample fixture is pushed to the rotatable storage rack by the material pushing mechanism for collection, and the present application realizes automatic feeding of the sample fixture one by one.

Description

Technical Field

[0001] This invention relates to the field of petroleum coke detection technology, and in particular to an optical detection device and method for petroleum coke purity. Background Technology

[0002] In the field of petroleum coke production and processing, petroleum coke is an important by-product of deep petroleum processing. Due to its high calorific value, high conductivity and chemical stability, it is widely used in high-end industrial fields such as electrolytic aluminum anode materials, graphite electrode preparation and lithium battery anode materials. Its purity directly affects the performance and reliability of downstream products. Therefore, it is necessary to accurately detect the content of trace elements in it. Infrared spectrometer is an optical detection device based on the principle of molecular vibration absorption spectroscopy analysis. It mainly consists of an infrared light source, interferometer, sample chamber, detector, signal processing system and computer analysis system. During testing, the prepared petroleum coke sample is placed in the sample chamber. An infrared light source emits broadband infrared light, which, after modulation by an interferometer, illuminates the sample. Molecules in the sample absorb infrared radiation of specific wavelengths, causing vibrational transitions. The detector receives the transmitted or reflected light signals, and the signal processing system converts the interferogram into an infrared absorption spectrum. The computer analysis system qualitatively identifies the organic functional groups and impurities in the petroleum coke based on the wavenumber position and intensity of characteristic absorption peaks, and quantitatively assesses the purity grade of the petroleum coke, providing data guidance for adjusting and optimizing production process parameters. This equipment features non-destructive testing, rapid scanning, and simple sample preparation, meeting the daily monitoring needs of raw materials in production sites.

[0003] Existing infrared spectrometers require personnel to prepare all petroleum coke samples at once during the testing process. They then manually open the machine cover to load and remove samples. Only after all samples in the current batch have been tested can the machine cover be opened to remove samples and load the next batch. This makes it impossible to continuously load samples or replace individual samples during the testing process, resulting in low testing efficiency, frequent manual operations, and significant time consumption.

[0004] Therefore, an optical detection device and method for petroleum coke purity are proposed to solve the above problems. Summary of the Invention

[0005] To address the technical problems of existing petroleum coke purity testing methods, which rely on manual loading and unloading, have low testing efficiency, and poor continuity, this invention provides an optical testing device and method for petroleum coke purity.

[0006] The technical solutions provided by the embodiments of the present invention are as follows: This invention provides an optical testing device for the purity of petroleum coke, comprising a spectrometer, a cover, and a sample fixture. A testing frame is fixedly connected to the bottom of the spectrometer, positioned above the testing unit of the spectrometer. A disc is fixedly connected to the top of the testing frame, with a cross groove at the top. A rotating ring is rotatably connected to the outside of the testing frame, and a storage rack is mounted on the rotating ring. The spectrometer is equipped with a pushing mechanism for moving the tested sample fixture into the storage rack. The cover is equipped with an automatic sample fixture feeding mechanism, and the spectrometer is also equipped with a cover-opening mechanism for driving the cover to move. The material handling mechanism includes a storage cylinder for storing sample fixtures. A pair of rotating cylinders are rotatably connected to the top of the machine cover. An upper electric telescopic cylinder is fixedly connected to the inner side of each rotating cylinder. The output end of the upper electric telescopic cylinder is fixedly connected to a clamp through the bottom end of the rotating cylinder. The output end of each clamp is fixedly connected to a clamping block. The storage cylinder is rotatably connected to the top of the machine cover. The storage cylinder is equipped with a limiting mechanism for restricting the position of the sample fixture and a rotating mechanism for driving the rotating cylinder to rotate. The machine cover is equipped with a sealing mechanism for loading samples during testing. Through the setting of the material handling mechanism, the sample fixture at the bottom of the storage cylinder can be automatically removed and the bottom limiting mechanism can be released. Then, the sample fixture is accurately placed on the testing rack for infrared spectroscopy detection. After the detection is completed, the pushing mechanism pushes the sample fixture to the rotatable storage rack for collection. This method realizes automatic loading of sample fixtures one by one, eliminating the need for testing personnel to place them one by one on the rotating rack. Moreover, the storage cylinder sealing cover can be opened during the testing process to replenish the material, significantly improving the testing efficiency, reducing the intensity of manual operation, and realizing unattended continuous testing operations.

[0007] An optical method for detecting the purity of petroleum coke includes the following steps; Step 1: Material preparation. First, place the compressed petroleum coke into the sample fixture, and then place the sample fixture into the storage cylinder in sequence. Step 2: Optical inspection, then control the upper electric telescopic cylinder to drive the clamp to move upward, so that the clamp presses the limiting mechanism to release the limit on the bottom sample fixture. At the same time, control the clamp to drive the clamping block to clamp the bottom sample fixture. Then the upper electric telescopic cylinder drives the sample fixture to move downward. At this time, the limiting mechanism resets and restricts the other sample fixture. Then the sampling mechanism drives the sample fixture to be placed in the cross groove at the top of the disc, completing the automatic feeding of the sample fixture. The detection unit of the spectrometer performs optical purity detection on the petroleum coke sample in the sample fixture in the cross groove. Step 3: Material feeding and storage. After the test is completed, the pushing mechanism pushes the tested sample fixture out of the cross groove and moves it into the storage rack. Then, it drives the rotating ring to rotate outside the test rack, which drives the storage rack to switch to the next storage station to prepare for receiving the next tested sample fixture. The above steps are repeated to achieve continuous optical detection of petroleum coke purity.

[0008] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention features a storage cylinder on the machine cover and lifting clamping mechanisms on both sides of the storage cylinder. Testing personnel simply place multiple sample fixtures into the storage cylinder, and the lifting mechanism automatically removes the sample fixtures from the bottom of the storage cylinder and releases the bottom limit. The sample fixtures are then precisely placed on the testing frame for infrared spectroscopy detection. After the test, the pushing mechanism pushes the sample fixtures onto a rotatable storage rack for collection. This method achieves automatic feeding of sample fixtures one by one, eliminating the need for testing personnel to place them individually on the rotating frame. Furthermore, the storage cylinder cover can be opened during the testing process to replenish the sample, significantly improving testing efficiency, reducing manual labor intensity, and enabling unattended continuous testing operations.

[0009] 2. This invention, through the setting of a rotating mechanism and a cover-opening mechanism, allows the material-picking mechanism to be rotated and adjusted to clamp to both sides, thereby automatically clamping the storage rack. The material-picking mechanism is then adjusted to rack-changing mode, and subsequently, the cover-opening mechanism is controlled to drive the cover to move upward and then laterally. The material-picking mechanism places the inspected storage rack on the displacement plate, and the moving platform automatically moves the empty storage rack to the clamping station. By repeating the above operation in reverse, the empty storage rack can be automatically returned to the inspection position. This method realizes automatic and rapid replacement of storage racks without manual intervention in rack-changing operations, greatly improving the automation level and inspection efficiency of the equipment.

[0010] 3. The present invention, through the setting of the sealing mechanism, enables the material taking mechanism to drive the sealing mechanism to quickly seal the storage cylinder, thereby allowing sample loading during the detection process. After sample loading is completed, the nitrogen replacement mechanism replenishes inert gas into the storage cylinder, expels the mixed external air, and restores the nitrogen protective environment inside the cylinder. This design achieves simultaneous detection and material replenishment, avoiding atmosphere fluctuations caused by frequent opening of the detection chamber. At the same time, the material taking mechanism and the sealing mechanism share the same drive source, eliminating the need for additional independent sealing devices. The structure is compact and the operation is smooth, effectively ensuring the atmospheric stability and data repeatability of infrared spectroscopy detection. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the optical detection device of the present invention. Figure 2 This is a partial cross-sectional three-dimensional structural diagram of the spectral detector of the present invention; Figure 3 Appendix of the present invention Figure 2 A magnified view of the structure at point A in the middle; Figure 4 This is a three-dimensional structural diagram of the hood of the present invention from a bottom view and a partial enlarged structural diagram; Figure 5 This is a partial frontal cross-sectional perspective view of the cover and storage cylinder of the present invention; Figure 6 This is a top-view three-dimensional structural diagram of the detection frame, the electric telescopic cylinder for pushing materials, the drive motor, and the disc of the present invention. Figure 7 This is a rear-view perspective three-dimensional structural diagram of the storage cylinder, the front electric telescopic cylinder, and the rotating cylinder of the present invention. Figure 8 This is a bottom-view, partially sectional, three-dimensional structural diagram of the separation of the cover and the movable frame of the present invention; Figure 9 This is a bottom-view perspective view of the storage rack structure of the present invention; Figure 10 This is a partial cross-sectional perspective view of the rotating cylinder, clamp, and clamping block of the present invention. Figure 11 This is a partial cross-sectional three-dimensional structural diagram of the sample fixture and limiting frame of the present invention. Figure 12 This is a schematic diagram of the overall appearance structure of the limiting rod and the lower rod of the present invention; Figure 13 This is a three-dimensional structural diagram of the storage cylinder, rotating cylinder, and front electric telescopic cylinder of the present invention, viewed from below after adjustment.

[0012] Figure 14 This is a schematic diagram of the partial separation of the storage cylinder, sealing block, and longitudinal moving frame on the side of the present invention.

[0013] In the diagram: 1. Spectrometer; 2. Cover; 3. Detection frame; 4. Disc; 5. Cross groove; 6. Rotating ring; 7. Storage rack; 8. Sample fixture; 9. Storage cylinder; 10. Rotating cylinder; 11. Upper electric telescopic cylinder; 12. Clamp; 13. Clamping block; 14. Observation window; 15. Sealing cover; 16. Limiting rod; 17. Limiting frame; 18. L-shaped plate; 19. Round rod; 20. Upper spring; 21. Lower rod; 22. Right angle plate; 23. Lower spring; 24. Pusher electric telescopic cylinder; 25. Pusher plate; 26. Drive motor; 27. Upper toothed ring; 28. Upper... 29. Gear; 30. Insert rod; 31. Slot; 32. Lower electric telescopic cylinder; 33. Moving motor; 34. Threaded rod; 35. Moving frame; 36. Moving plate; 37. Moving platform; 38. Upper rod; 39. Front electric telescopic cylinder; 40. Lower gear ring; 41. Rack; 42. U-shaped plate; 43. Clamping groove; 54. Displacement plate; 55. Top gear ring; 56. Top gear; 57. Sealing block; 58. Longitudinal moving frame; 59. Top cover; 50. Rotary motor; 51. Longitudinal groove; 52. Lateral moving block; 50. Nitrogen replacement mechanism; 501. Top spring; 502. Bottom spring. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0016] In practical use, it was found that existing spectrometers require manual opening of the cover 2 for sample loading and unloading during the testing process. The cover 2 can only be opened to remove samples and put in the next batch of samples after all samples in the previous batch have been tested. This makes it impossible to continuously load samples and replace individual samples during the testing process, resulting in low testing efficiency, frequent manual operations, and time-consuming operations. To solve the above problems, the following structure was invented.

[0017] like Figures 1-14The illustrated optical detection device for petroleum coke purity includes a spectrometer 1, a cover 2, and a sample fixture 8. A detection frame 3 is fixedly connected to the bottom of the spectrometer 1. The detection frame 3 is positioned above the detection unit of the spectrometer 1. The spectrometer 1 irradiates the petroleum coke sample by emitting a light source of a specific wavelength. Different elements in the sample absorb or emit characteristic spectra. The light signals are collected by the spectral sensor in the detection unit and converted into electrical signals. After analysis and processing, the elemental composition and purity data of the petroleum coke are obtained, realizing non-contact rapid optical detection. A disc 4 is fixedly connected to the top of the detection frame 3. A cross groove 5 is opened on the top of the disc 4. A rotating ring 6 is rotatably connected to the outside of the detection frame 3. A storage rack 7 is provided on the rotating ring 6. The spectrometer 1 is provided with a pushing mechanism for pushing the sample fixture 8 after detection to the storage rack 7. The cover 2 is provided with an automatic feeding mechanism for the sample fixture 8. The spectrometer 1 is also provided with an opening mechanism for driving the cover 2 to move. The material handling mechanism includes a storage cylinder 9 for storing the sample fixture 8. A pair of rotating cylinders 10 are rotatably connected through the top of the cover 2. An upper electric telescopic cylinder 11 is fixedly connected to the inner side of each rotating cylinder 10. A clamp 12 is fixedly connected to the output end of the upper electric telescopic cylinder 11 through the bottom end of the rotating cylinder 10. A clamping block 13 is fixedly connected to the output end of each clamp 12. The storage cylinder 9 is rotatably connected through the top of the cover 2. A limiting mechanism for limiting the position of the sample fixture 8 is provided inside the storage cylinder 9. A rotating mechanism for driving the rotating cylinder 10 to rotate is also provided. A sealing mechanism for loading the sample during testing is provided on the cover 2.

[0018] An observation window 14 is provided through the front of the storage cylinder 9. A transparent glass is fixedly connected to the inside of the observation window 14. A sealing cap 15 is threaded to the top of the storage cylinder 9. The observation window 14 and the transparent glass are used to visually observe the remaining quantity of the sample fixture 8 in the storage cylinder 9, so as to facilitate timely replenishment of materials. The sealing cap 15 is threaded to the top of the storage cylinder 9 to seal the space inside the cylinder, prevent external dust and impurities from entering and contaminating the sample fixture 8, and prevent the sample fixture 8 inside the cylinder from falling out due to vibration or accidental collision, thus ensuring the stability and cleanliness of automatic feeding.

[0019] The limiting mechanism includes limiting rods 16, and there is a pair of limiting rods 16. Limiting frames 17 are fixedly connected through both sides of the bottom of the storage cylinder 9. The limiting rods 16 are slidably connected through to the side of the limiting frame 17. L-shaped plates 18 are fixedly connected to the side walls of the limiting rods 16. Round rods 19 are fixedly connected to the side walls of the L-shaped plates 18. An upper spring 20 is fixedly connected between the side walls of the L-shaped plates 18 and the inner side of the limiting frame 17. A lower rod 21 is slidably connected through the bottom end of the limiting frame 17. A right-angle plate 22 with an inclined surface is fixedly connected to the top of the lower rod 21. A lower spring 23 is fixedly connected between the top of the right-angle plate 22 and the inner top of the limiting frame 17. The sample fixture 8 is a T-shaped cylinder.

[0020] The feeding mechanism includes a feeding electric telescopic cylinder 24, which is fixedly connected to the inside of the spectrometer 1. The output end of the feeding electric telescopic cylinder 24 is fixedly connected to a feeding plate 25. The feeding electric telescopic cylinder 24 is located behind the vertical end of the cross groove 5, and the clamping block 13 is located above the horizontal end of the cross groove 5.

[0021] A drive motor 26 is fixedly connected to the bottom of the spectral detector 1. An upper gear ring 27 is fixedly connected to the outer wall of the rotating ring 6. An upper gear 28 that meshes with the upper gear ring 27 is fixedly connected to the output end of the drive motor 26. A pair of insert rods 29 are fixedly connected to the top of the rotating ring 6. A pair of slots 30 are opened at the bottom of the storage rack 7. The insert rods 29 are inserted into the inside of the slots 30.

[0022] When testing the purity of petroleum coke, the petroleum coke is first compressed and placed into the sample fixture 8. Then, the sample fixture 8 is placed into the storage cylinder 9, and the sealing cap 15 is tightened. Then, the upper electric telescopic cylinder 11 is controlled to drive the clamp 12 to move upward. At this time, the clamp 12 will squeeze the lower rod 21, causing the right-angle plate 22 to move upward, while gradually compressing the lower spring 23. During this process, the inclined surface of the right-angle plate 22 will squeeze the arc surface of the round rod 19 (since the L-shaped plate 18 and the limiting rod 16 can only slide laterally, under the squeezing of the inclined surface of the right-angle plate 22, the L-shaped plate 18 and the limiting rod 16 will be pushed to slide, and the upper spring 20 will be gradually compressed, thereby driving the limiting rod 16 from the T-shaped... (The lower part of the annular sample fixture 8 is moved away), at the same time, the clamping device 12 is controlled to drive the clamping block 13 to clamp the lowermost sample fixture 8. Then, the upper electric telescopic cylinder 11 is controlled to drive the clamping device 12 and the clamping block 13 to move downward (during the downward movement, the pressure on the lower rod 21 will be gradually released, so that the limit rod 16 will be gradually pushed to reset under the elastic force of the upper spring 20 and the lower spring 23. During the reset, the limit rod 16 will move to the side wall of the sample fixture 8. Only after the lowermost sample fixture 8 is moved out can the pressure on the limit rod 16 be released. Then, the limit rod 16 will be pushed to reset under the elastic force of the upper spring 20, thereby restricting the position of the other sample fixture 8). Then, the electric telescopic cylinder 11 drives the sample fixture 8 to be placed in the cross groove 5 at the top of the disc 4, completing the automatic feeding of the sample fixture 8 (at this time, the sample fixture 8 is stuck in the cross groove 5). Then, the detection unit of the spectrometer 1 controls the optical purity detection of the petroleum coke sample in the sample fixture 8 in the cross groove 5. After the test is completed, the electric telescopic cylinder 24 can be started to drive the pusher plate 25 to push the tested sample fixture 8 out of the cross groove 5 and move it into the storage rack 7. Then, the drive motor 26 is started to drive the upper gear 28 to rotate, which in turn drives the meshing upper gear ring 27 to rotate, thereby driving the rotating ring 6 to rotate (which drives the storage rack 7 to rotate through the insertion rod 29). This causes the storage rack 7 to switch to the next storage station to prepare for receiving the next tested sample fixture 8. Finally, the above steps are repeated to achieve continuous optical detection of petroleum coke purity.

[0023] In summary, through the design of the above structure, a storage cylinder 9 is set on the cover 2, and a lifting and clamping material-retrieving mechanism is configured on both sides of the storage cylinder 9. The testing personnel only need to put multiple sample fixtures 8 into the storage cylinder 9 at the same time, and the material-retrieving mechanism can automatically take out the sample fixtures 8 at the bottom of the storage cylinder 9 and release the bottom limit. Then, the sample fixtures 8 are accurately placed on the testing frame 3 for infrared spectroscopy detection. After the detection is completed, the pushing mechanism pushes the sample fixtures 8 to the rotatable storage rack 7 for collection. This method realizes the automatic feeding of sample fixtures 8 one by one, without the need for the testing personnel to place them one by one on the rotating frame. Moreover, the sealing cover 15 on the storage cylinder 9 can be opened to replenish the material during the testing process, which significantly improves the testing efficiency, reduces the intensity of manual operation, and realizes unattended continuous testing operation.

[0024] Based on the above embodiments, it was found during use that although the above can realize the automatic feeding of individual sample fixtures 8 one by one without the need for manual placement of samples, after all the sample fixtures 8 on the storage rack 7 have been tested, the storage rack 7 needs to be replaced manually. The full storage rack 7 needs to be taken out and put back into the empty storage rack 7, which is quite troublesome. Moreover, it cannot realize automatic rack replacement during the testing process, which affects the continuity and automation of the testing operation. In order to solve the above problems, the above structure has been further improved.

[0025] The opening mechanism includes two pairs of lower electric telescopic cylinders 31, a pair of moving motors 32, a pair of threaded rods 33, a pair of moving frames 34, and a pair of moving plates 35. The two moving frames 34 are installed through the bottom of the cover 2. The threaded rods 33 are rotatably connected to the inside of the moving frames 34. The moving plates 35 are laterally slidably connected to the inside of the moving frames 34 and are fixedly connected to the bottom of the cover 2. The moving motors 32 are fixedly connected to the side wall of the moving frames 34. The output end of the moving motors 32 passes through the moving frames 34 and is fixedly connected to the side wall of the threaded rods 33. The threaded rods 33 are threaded through and connected to the inner side wall of the moving plates 35. A pair of grooves are provided at the top of the spectrometer 1. Each pair of lower electric telescopic cylinders 31 is fixedly connected to the inside of the grooves. The output end of the lower electric telescopic cylinders 31 is fixedly connected to the bottom of the moving frames 34.

[0026] The side wall of the spectral detector 1 is provided with a moving platform 36, and the moving end of the moving platform 36 is fixedly connected to a displacement plate 43. A pair of upper rods 37 are fixedly connected to the top of the displacement plate 43.

[0027] The rotating mechanism includes a front electric telescopic cylinder 38, a lower toothed ring 39, a rack 40, and a U-shaped plate 41. The machine cover 2 has a central cavity. The lower toothed ring 39 and the rack 40 are provided in a pair. The lower toothed ring 39 is fixedly connected to the outer wall of the rotating cylinder 10 at a position relative to the central cavity. The rack 40 is laterally slidably connected to the inner side of the central cavity. The rack 40 and the lower toothed ring 39 mesh with each other. The two ends of the U-shaped plate 41 are fixedly connected to the side walls of the two racks 40. The front electric telescopic cylinder 38 is fixedly connected to the inner side of the central cavity. The front electric telescopic cylinder 38 is fixedly connected to the side wall of the U-shaped plate 41. A pair of clamping grooves 42 are provided on the inner side of the storage rack 7.

[0028] During the testing of petroleum coke, the testing personnel can place the empty storage rack 7 on the displacement plate 43 (and insert the storage rack 7 into the two upper rods 37 on the front side through the slot 30). Then, when the sample fixture 8 on the storage rack 7 is full and needs to be removed, the front electric telescopic cylinder 38 is first started to drive the U-shaped plate 41 and the rack 40 to move, thereby driving the meshing lower toothed ring 39 to rotate 180 degrees, which in turn drives the rotating cylinder 10, the upper electric telescopic cylinder 11, the clamp 12 and the clamping block 13 to rotate, thereby rotating the clamping block 13 to both sides. Then, the upper electric telescopic cylinder 11 can be started to drive the clamp 12 and the clamping block 13 to move down, so that the clamping block 13 moves into the cross groove 5 and is located next to the clamping groove 42. Then, the clamp 12 can be started to drive the clamping block 13 to insert into the clamping groove 42, thereby clamping the storage rack 7. Then, the lower electric telescopic cylinder 31 can be started to move the moving frame 34 and the machine cover 2 upward. Then, the moving motor 32 can be started to rotate the threaded rod 33, thereby moving the threaded moving plate 35 and the machine cover 2 laterally. The storage rack 7 is moved laterally onto the displacement plate 43. Then, the upper electric telescopic cylinder 11 can be controlled to place the storage rack 7 on the displacement plate 43 (and insert the two upper rods 37 into the slots 30). Then, the clamp 12 can be controlled to reset the clamping block 13, releasing the clamping fixation of the storage rack 7. Then, the upper electric telescopic cylinder 11 can be controlled to move the clamping block 13 upward to reset. Then, the moving platform 36 can be controlled to move the displacement plate 43 backward, so that the empty storage rack 7 is moved to the position below the clamping block 13. The above operation can be repeated in reverse to install the empty storage rack 7 onto the inspection station.

[0029] In summary, through the design of the above structure, the material picking mechanism can be rotated and adjusted to clamp to both sides, thereby automatically clamping the storage rack 7. The material picking mechanism is then adjusted to the rack changing mode, and the cover opening mechanism is controlled to drive the cover 2 to move upward and then horizontally. The material picking mechanism places the tested storage rack 7 on the displacement plate 43, and the moving platform 36 automatically moves the empty storage rack 7 to the clamping station. By repeating the above operation in reverse, the empty storage rack 7 can be automatically returned to the testing position. This method realizes the automatic and rapid replacement of the storage rack 7 without the need for manual intervention in the rack changing operation, which greatly improves the automation level and testing efficiency of the equipment. At the same time, by repeating the above operation in reverse, the storage rack 7 filled with the test sample fixture 8 can be automatically moved to the testing station, and the pusher plate 25 is driven by the pusher electric telescopic cylinder 24 to push the test sample fixture 8 to slide in the cross groove 5, so as to realize the individual testing of the entire tray of test sample fixtures 8.

[0030] Based on the above embodiments, it was found during use that although the above can realize automatic loading and unloading of petroleum coke samples and continuous detection, before detection, the detection personnel must prepare all petroleum coke samples at once, and then manually open the machine cover 2 to load and take samples. If the loading is opened during the detection process, external air will enter and mix with the nitrogen in the storage cylinder 9. Subsequently, the mixed air diffuses into the detection chamber, causing the infrared spectrum baseline to drift and the characteristic absorption peak to be distorted, affecting the detection accuracy and data repeatability. To solve the above problems, the above structure has been further improved.

[0031] The sealing mechanism includes a top toothed ring 51, a top gear 52, a pair of sealing blocks 53, a rotary motor 56, and a pair of longitudinal moving frames 54. The top toothed ring 51 is fixedly connected to the outer wall of the storage cylinder 9, and the top gear 52 is rotatably connected to the top of the cover 2. The top gear 52 and the top toothed ring 51 mesh with each other. A top cover 55 is provided through the outer wall of the storage cylinder 9. The top cover 55 is fixedly connected to the top of the cover 2. The rotary motor 56 is fixedly connected to the top of the top cover 55. The output end of the rotary motor 56 passes through the top cover 55 and is fixedly connected to the top of the top gear 52. Longitudinal grooves 57 are provided on both sides of the bottom end of the outer wall of the storage cylinder 9. The longitudinal moving frames 54 are longitudinally slidably connected to the inner side of the longitudinal grooves 57. A transverse moving block 58 is laterally slidably connected to the inner side of the longitudinal grooves 57. The sealing block 53 is fixedly connected to the bottom end of the transverse moving block 58. The inner side of the sealing block 53 is adapted to the outer wall of the sample fixture 8.

[0032] The sealing block 53 is designed as a half-circle arc, the transverse block 58 is made of rubber, and a nitrogen replacement mechanism 59 is provided on the rear side of the storage cylinder 9. The nitrogen replacement mechanism 59 is located on the side wall of the storage cylinder 9 and is linked to the action sequence of the material taking mechanism. When the sample jig 8 is replenished during the detection process, the nitrogen interface is automatically opened and a quantitative amount of nitrogen is injected into the storage cylinder 9. Taking advantage of the fact that the density of nitrogen is greater than that of air, the external air mixed in during the replenishment of the sample is expelled from the exhaust hole at the bottom of the storage cylinder 9, restoring the inert gas protection state inside the cylinder. This provides a pure atmosphere environment for the detection space after the sealing is removed, and prevents humid air from entering the detection chamber and affecting the accuracy of infrared spectroscopy detection. A top spring 501 is fixedly connected between the inner side of the longitudinal groove 57 and the top of the longitudinal frame 54, and a bottom spring 502 is fixedly connected between the inner side of the longitudinal frame 54 and the side wall of the transverse block 58.

[0033] During the testing process, when a petroleum coke sample needs to be added, firstly, the rotary motor 56 is started to drive the top gear 52 to rotate, which in turn drives the meshing top gear ring 51 to rotate, thereby causing the storage cylinder 9 to rotate 90 degrees. This rotates the sealing block 53 to the positions on both sides of the clamping block 13, and moves the limiting frame 17 away from the clamp 12. Then, the upper electric telescopic cylinder 11 is controlled to move the clamping block 13 to the positions on both sides of the sealing block 53. Subsequently, the clamp 12 is started to push the sealing block 53 to rotate, while simultaneously causing the transverse moving block 58 to slide in the longitudinal moving frame 54 and compressing the bottom spring. 502, thereby causing the sealing block 53 to be clamped on the outer wall of the sample fixture 8. Then, the upper electric telescopic cylinder 11 is controlled to continue to drive the clamp 12 to move upward, thereby causing the sealing block 53 to adhere to the bottom of the storage cylinder 9 (at the same time, it will also drive the sample fixture 8 to move upward together), thereby achieving the sealing of the inside of the storage cylinder 9. (It should be noted here that the sample fixture 8 is composed of a sealing cover and a sample release body. When the sealing block 53 is clamped on the outer wall of the sample fixture 8 and then pressed against the bottom of the storage cylinder 9, the space inside the storage cylinder 9 is isolated from the detection space between the machine cover 2 and the spectrometer 1, so as not to affect the normal detection of petroleum coke). Then, rotate the sealing cap 15, and place the sample fixture 8 into the storage cylinder 9. Then, screw the sealing cap 15 in, and then control the nitrogen replacement mechanism 59 to treat the gas entering the storage cylinder 9. This will control the upper electric telescopic cylinder 11 and the clamp 12 to reset, thereby achieving rapid sample loading during the testing process.

[0034] In summary, the above-described structure enables the material handling mechanism to drive the sealing mechanism, quickly sealing the storage cylinder 9. This allows for sample loading during the detection process. After sample loading, the nitrogen replacement mechanism 59 replenishes inert gas into the storage cylinder 9, expelling any mixed-in external air and restoring the nitrogen-protected environment inside the cylinder. This design achieves simultaneous detection and material replenishment, avoiding atmospheric fluctuations caused by frequent opening of the detection chamber. Furthermore, the material handling mechanism and the sealing mechanism share a common drive source, eliminating the need for an additional independent sealing device. The structure is compact and the operation is seamless, effectively ensuring the atmospheric stability and data repeatability of infrared spectroscopy detection.

[0035] An optical method for detecting the purity of petroleum coke includes the following steps; Step 1: Material preparation. First, place the compressed petroleum coke in the sample fixture 8, and then place the sample fixture 8 into the storage cylinder 9 in sequence. Step 2: Optical inspection, then control the upper electric telescopic cylinder 11 to drive the clamp 12 to move upward, so that the clamp 12 presses the limiting mechanism to release the limit on the bottom sample fixture 8. At the same time, control the clamp 12 to drive the clamping block 13 to clamp the bottom sample fixture 8. Then the upper electric telescopic cylinder 11 drives the sample fixture 8 to move downward. At this time, the limiting mechanism is reset to restrict the other sample fixture 8. Then the sampling mechanism drives the sample fixture 8 to be placed in the cross groove 5 at the top of the disc 4 to complete the automatic feeding of the sample fixture 8. The detection unit of the spectrometer 1 performs optical purity detection on the petroleum coke sample in the sample fixture 8 within the cross groove 5. Step 3: Material feeding and storage. After the test is completed, the pushing mechanism pushes the tested sample fixture 8 out of the cross groove 5 and moves it into the storage rack 7. Then, the rotating ring 6 is driven to rotate outside the test frame 3, which drives the storage rack 7 to switch to the next storage station to prepare for receiving the next tested sample fixture 8. The above steps are repeated to achieve continuous optical detection of petroleum coke purity.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention.

[0037] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. An optical detection device for the purity of petroleum coke, comprising a spectrometer (1), a cover (2), and a sample fixture (8), characterized in that, The bottom of the spectrometer (1) is fixedly connected to a test frame (3). The test frame (3) is set above the test unit of the spectrometer (1). The top of the test frame (3) is fixedly connected to a disc (4). The top of the disc (4) is provided with a cross groove (5). The outer side of the test frame (3) is rotatably connected to a rotating ring (6). The rotating ring (6) is provided with a storage rack (7). The spectrometer (1) is provided with a pushing mechanism for pushing the tested sample fixture (8) to the storage rack (7). The cover (2) is provided with an automatic feeding sample fixture (8) picking mechanism. The spectrometer (1) is also provided with a cover opening mechanism for driving the cover (2) to move. The material handling mechanism includes a storage cylinder (9) for storing the sample fixture (8). A pair of rotating cylinders (10) are rotatably connected through the top of the cover (2). An upper electric telescopic cylinder (11) is fixedly connected to the inner side of each rotating cylinder (10). A clamp (12) is fixedly connected through the bottom end of the upper electric telescopic cylinder (11) through the bottom end of the rotating cylinder (10). A clamping block (13) is fixedly connected to the output end of each clamp (12). The storage cylinder (9) is rotatably connected through the top of the cover (2). A limiting mechanism for limiting the position of the sample fixture (8) is provided inside the storage cylinder (9). A rotating mechanism for driving the rotating cylinder (10) to rotate is also provided. A sealing mechanism for detecting the sample loading is provided on the cover (2).

2. The optical detection device for petroleum coke purity according to claim 1, characterized in that, The storage cylinder (9) has an observation window (14) through the front side. A transparent glass is fixedly connected to the inside of the observation window (14). A sealing cap (15) is threaded to the top of the storage cylinder (9). A moving platform (36) is provided on the side wall of the spectrometer (1). A displacement plate (43) is fixedly connected to the moving end of the moving platform (36). A pair of upper rods (37) are fixedly connected to the top of the displacement plate (43).

3. The optical detection device for petroleum coke purity according to claim 1, characterized in that, The limiting mechanism includes a limiting rod (16), and a pair of limiting rods (16) are provided. The bottom sides of the storage cylinder (9) are fixedly connected to the limiting frame (17). The limiting rods (16) are slidably connected to the limiting frame (17) on the side close to each other. The side walls of the limiting rods (16) are fixedly connected to L-shaped plates (18). The side walls of the L-shaped plates (18) are fixedly connected to round rods (19). The side walls of the L-shaped plates (18) and the inner side of the limiting frame (17) are fixedly connected to an upper spring (20). The bottom end of the limiting frame (17) is slidably connected to a lower rod (21). The top end of the lower rod (21) is fixedly connected to a right-angle plate (22) with an inclined surface. The top end of the right-angle plate (22) and the top end of the inner side of the limiting frame (17) are fixedly connected to a lower spring (23). The sample fixture (8) is set as a T-shaped cylinder.

4. The optical detection device for petroleum coke purity according to claim 1, characterized in that, The pushing mechanism includes a pushing electric telescopic cylinder (24), which is fixedly connected to the inside of the spectrometer (1). The output end of the pushing electric telescopic cylinder (24) is fixedly connected to a pushing plate (25). The pushing electric telescopic cylinder (24) is located behind the vertical end of the cross groove (5), and the clamping block (13) is located above the horizontal end of the cross groove (5).

5. The optical detection device for petroleum coke purity according to claim 1, characterized in that, The bottom of the spectrometer (1) is fixedly connected to a drive motor (26), the outer wall of the rotating ring (6) is fixedly connected to an upper gear ring (27), the output end of the drive motor (26) is fixedly connected to an upper gear (28) that meshes with the upper gear ring (27), the top of the rotating ring (6) is fixedly connected to a pair of insert rods (29), the bottom of the storage rack (7) is provided with a pair of slots (30), and the insert rods (29) are inserted into the inside of the slots (30).

6. The optical detection device for petroleum coke purity according to claim 1, characterized in that, The opening mechanism includes two pairs of lower electric telescopic cylinders (31), a pair of moving motors (32), a pair of threaded rods (33), a pair of moving frames (34), and a pair of moving plates (35). The two moving frames (34) are installed through the bottom of the cover (2). The threaded rods (33) are rotatably connected to the inside of the moving frames (34). The moving plates (35) are laterally slidably connected to the inside of the moving frames (34). The moving plates (35) are fixedly connected to the bottom of the cover (2). The moving motors (32) are fixedly connected to the side wall of the moving frames (34). The output end of the moving motors (32) passes through the moving frames (34) and is fixedly connected to the side wall of the threaded rods (33). The threaded rods (33) are threaded through and connected to the inner side wall of the moving plates (35). A pair of grooves are provided at the top of the spectrometer (1). Each pair of lower electric telescopic cylinders (31) is fixedly connected to the inside of the grooves. The output end of the lower electric telescopic cylinders (31) is fixedly connected to the bottom of the moving frames (34).

7. The optical detection device for petroleum coke purity according to claim 1, characterized in that, The rotating mechanism includes a front electric telescopic cylinder (38), a lower toothed ring (39), a rack (40), and a U-shaped plate (41). The machine cover (2) has a central cavity inside. The lower toothed ring (39) and the rack (40) are provided in a pair. The lower toothed ring (39) is fixedly connected to the outer wall of the rotating cylinder (10) at a position relative to the central cavity. The rack (40) is laterally slidably connected to the inner side of the central cavity. The rack (40) and the lower toothed ring (39) mesh with each other. The two ends of the U-shaped plate (41) are fixedly connected to the side walls of the two racks (40). The front electric telescopic cylinder (38) is fixedly connected to the inner side of the central cavity. The front electric telescopic cylinder (38) is fixedly connected to the side wall of the U-shaped plate (41). The storage rack (7) has a pair of clamping grooves (42) inside.

8. The optical detection device for petroleum coke purity according to claim 1, characterized in that, The sealing mechanism includes a top toothed ring (51), a top gear (52), a pair of sealing blocks (53), a rotary motor (56), and a pair of longitudinal moving frames (54). The top toothed ring (51) is fixedly connected to the outer wall of the storage cylinder (9), and the top gear (52) is rotatably connected to the top of the cover (2). The top gear (52) and the top toothed ring (51) mesh with each other. A top cover (55) is provided through the outer wall of the storage cylinder (9). The top cover (55) is fixedly connected to the top of the cover (2). The rotary motor (56) is fixedly connected to the top of the cover (2). The output end of the rotary motor (56) is fixedly connected to the top of the top gear (52) through the top cover (55). The storage cylinder (9) has longitudinal grooves (57) on both sides of the bottom of the outer wall. The longitudinal moving frame (54) is longitudinally slidably connected to the inner side of the longitudinal groove (57). The transverse moving block (58) is transversely slidably connected to the inner side of the longitudinal groove (57). The sealing block (53) is fixedly connected to the bottom of the transverse moving block (58). The inner side of the sealing block (53) is adapted to the outer wall of the sample fixture (8).

9. The optical detection device for petroleum coke purity according to claim 8, characterized in that, The sealing block (53) is set in half an arc shape, the transverse block (58) is made of rubber, the storage cylinder (9) is provided with a nitrogen replacement mechanism (59) on the rear side, a top spring (501) is fixedly connected between the inner side of the longitudinal groove (57) and the top of the longitudinal frame (54), and a bottom spring (502) is fixedly connected between the inner side of the longitudinal frame (54) and the side wall of the transverse block (58).

10. A method for optically detecting the purity of petroleum coke, the method being applicable to the optical detection equipment for petroleum coke purity as described in any one of claims 1-9, characterized in that, Includes the following steps; Step 1: Material preparation. First, place the compressed petroleum coke in the sample fixture (8), and then place the sample fixture (8) into the storage cylinder (9) in sequence. Step 2: Optical detection, then control the upper electric telescopic cylinder (11) to drive the clamp (12) to move upward, so that the clamp (12) presses the limiting mechanism to release the limit on the bottom sample fixture (8). At the same time, control the clamp (12) to drive the clamping block (13) to clamp the bottom sample fixture (8). Then the upper electric telescopic cylinder (11) drives the sample fixture (8) to move downward. At this time, the limiting mechanism is reset to restrict the other sample fixture (8). Then the sampling mechanism drives the sample fixture (8) to be placed in the cross groove (5) at the top of the disc (4) to complete the automatic feeding of the sample fixture (8). The detection unit of the spectrometer (1) performs optical purity detection on the petroleum coke sample in the sample fixture (8) in the cross groove (5). Step 3: Material feeding and storage. After the test is completed, the pushing mechanism pushes the tested sample fixture (8) out of the cross groove (5) and moves it to the storage rack (7). Then, it drives the rotating ring (6) to rotate outside the test frame (3) and drives the storage rack (7) to switch to the next storage station to prepare for receiving the sample fixture (8) after the next test. Repeat the above steps to achieve continuous optical detection of petroleum coke purity.

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