A coal preparation online ash detection method and detection sensor device

Abstract

The present invention discloses an online ash content detection method and a detection sensor device for coal preparation, which relate to the technical field of ash content detection, include a conveying platform and a fixed frame, wherein a natural ray ash meter is installed on the inner side of the fixed frame, and also include: a feeding mechanism, which is arranged on the conveying platform and is used to convey the coal to the part to be detected; a vibration component, which is arranged on the fixed frame, wherein the feeding mechanism includes a fixed shaft, two groups of fixed shafts are rotatably connected on both sides of the conveying platform, and a connecting frame is fixed on the outer side of the fixed shaft, and a first movable frame is hinged on the outer side of the connecting frame through a circular shaft, and a feeding hopper is hinged on the top of the connecting frame. Through the cooperation between the vibrating screen and the groove, the vibrating screen will intermittently tilt slightly toward the groove when vibrating, so that it will gradually convey the flattened coal particles toward the discharge rack. Since the coal particles sliding down the inner side of the discharge rack are more evenly distributed, the accuracy of the coal ash content detection is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ash content detection, in particular to an online ash content detection method and a detection sensor device for coal preparation. Background Art

[0002] In industries like coal and minerals, accurate ash content measurement is crucial for product quality control, process optimization, and environmental protection. With advancements in technology, online ash content meters are widely used in production sites due to their high efficiency and real-time performance.

[0003] Ash content refers to the solid residue remaining after coal combustion, primarily composed of minerals. Ash measurement is crucial for coal quality assessment and utilization. Traditionally, ash content measurement relies on laboratory analysis, where coal samples are collected, burned, and weighed according to prescribed procedures to determine the ash content. However, this method is time-consuming and cannot meet the needs of rapid testing. With technological advancements, online ash analyzers have emerged. These analyzers primarily utilize naturally occurring radioactive elements within the minerals of coal for measurement. These radioactive elements are primarily found in ash. By measuring the characteristic gamma particle flux emitted by coal, the ash content can be indirectly determined. Online measurement offers the advantages of instantaneous accuracy and averaged analytical values. However, typical coal preparation plants include screening, sorting, and crushing in the raw coal preparation stage. Consequently, the coal particles after preparation are smaller and more dispersed during transportation. Consequently, due to the uneven distribution of coal during transportation, the instantaneous measurement value of an online ash analyzer may not accurately reflect the overall ash content. Consequently, the measured value of an online ash analyzer is often lower than the analytical value, impacting the accuracy of coal ash testing. Summary of the Invention

[0004] The purpose of the present invention is to remedy the deficiencies of the prior art and to provide an on-line ash content detection method and a detection sensor device for coal preparation.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an online ash content detection sensor device for coal preparation, comprising a conveyor platform and a fixed frame, wherein a natural ray ash meter is installed inside the fixed frame, and further comprising:

[0006] A feeding mechanism, which is arranged on the conveying platform and is used to convey the coal to the part to be inspected;

[0007] a vibration assembly, which is arranged on a fixed frame and is used to distribute the coal to be inspected in an orderly manner;

[0008] The transmission mechanism comprises a fixed shaft, two sets of fixed shafts are rotatably connected on both sides of the conveying platform, a connecting frame is fixed on the outer side of the fixed shaft, a first movable frame is hinged on the outer side of the connecting frame through a circular shaft, a feeding hopper is hinged on the top of the connecting frame, and a third gear is installed on the end of one set of fixed shafts. A pneumatic cylinder is installed on both sides of the conveying platform, and the end of the pneumatic cylinder is connected to the first connecting piece, a slot is opened on one side of the first movable frame, and a triangular plate is hinged on the inside of the slot. A fixed piece is fixed on the top of the conveying platform, and a connecting shaft is fixed on the inside of the fixed piece, and a second movable frame and a first spring are sleeved on the inner side of the connecting shaft, and a limiting shaft is sleeved on the top of the second movable frame, and a second connecting piece is installed on one side of the second movable frame, the top of the limiting shaft is connected with a baffle, and the outer surface of the limiting shaft is sleeved with a second spring.

[0009] Among them, the vibration component includes a slide groove, which is arranged on both sides of the fixed frame, and a slider is slidably connected inside the slide groove. A groove is opened inside the slider, and a vibrating screen is hinged between the two groups of sliders through a torsion spring. A discharge rack is installed above the conveying platform, and the middle part of the conveying platform is connected to a rotating shaft for transmission. A first gear is fixed at both ends of the rotating shaft, and a second gear is rotatably connected on both sides of the fixed frame. A disc is installed on the outside of the second gear, and a plurality of groups of bumps are installed on the outer surface of the disc.

[0010] As a preferred solution of the present invention, the top of the first connecting member is tooth-shaped, and the first connecting member is meshedly connected to the third gear. When the connecting frame drives the feeding hopper to rotate upward, the feeding hopper can contact one side of the vibrating screen.

[0011] As a preferred solution of the present invention, the first gear is meshed with the second gear, the protrusion is in press contact with the slider, and a protrusion is provided on the outer side of the vibrating screen, wherein the protrusion is slidably connected with the groove.

[0012] As a preferred solution of the present invention, the discharge port of the vibrating screen faces the discharge rack, and the discharge rack is located directly below the probe of the natural ray ash analyzer.

[0013] As a preferred solution of the present invention, one side of the second connecting member protrudes outward, and the triangular plate is in press contact with the second connecting member.

[0014] As a preferred solution of the present invention, the first spring is elastically supported between the second movable frame and the conveying platform, and when the triangular plate presses the second connecting member, the baffle contacts the top surface of the conveying platform.

[0015] As a preferred solution of the present invention, there is a gap between the triangular plate and the notch, and the distance between the gaps is greater than the width of the second connecting member.

[0016] As a preferred solution of the present invention, when the connecting frame drives the feeding hopper to rotate downward, the feeding hopper can contact the top surface of the conveying platform. When the feeding hopper contacts the top surface of the conveying platform, the second connecting member can pass through the gap between the triangle plate and the slot.

[0017] As a preferred solution of the present invention, the following steps are included:

[0018] The gear train is rotated to move the gear train, and the gear train is rotated to move the gear train, and the gear train is rotated to move the gear train, and the gear train is rotated to move the gear train, and the gear train is rotated to move the gear train.

[0019] S2. Material is spread out. When the conveyor is running, the first gear is driven to rotate by the rotating shaft. The cooperation between the first and second gears drives the disc to rotate. The protrusions can intermittently squeeze the slider, causing the slider to drive the vibrating screen to vibrate up and down, so that the coal particles inside the vibrating screen are spread out and distributed more evenly.

[0020] S3. Ash content detection. When the vibrating screen vibrates, the cooperation between the vibrating screen and the groove causes the vibrating screen to intermittently tilt slightly toward the groove, so that the flattened coal particles are gradually transported toward the discharge rack. At this time, the coal particles will gradually slide down along the inner side of the discharge rack, and then emit natural gamma rays through the natural ray ash analyzer. When the natural gamma rays emitted by these trace radioactive elements in the coal interact with the surrounding matter, the energy of the natural gamma rays is concentrated in the low-energy direction, thereby forming a low-energy peak. The spectral line shape and peak area are related to the composition of the coal. The gamma ray detector quickly detects the ash content of the coal by detecting the particle flux of the gamma rays. Since the coal particles sliding down the inside of the discharge rack are more evenly distributed, the accuracy of the coal ash content detection is improved.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention can transport coal to the top of the vibrating screen through the feeding hopper. At the same time, when the conveying platform is running, the first gear will be driven to rotate through the rotating shaft, so that the disc can be driven to rotate through the cooperation between the first gear and the second gear, so that the slider can be intermittently squeezed by the protrusion, so that the slider drives the vibrating screen to vibrate up and down, so that the coal particles inside the vibrating screen will be evenly distributed. At the same time, through the cooperation between the vibrating screen and the groove, the vibrating screen will intermittently tilt slightly toward the groove when vibrating, so that the flattened coal particles will gradually be transported to the discharge rack. Since the coal particles sliding down from the inside of the discharge rack are more evenly distributed, the accuracy of coal ash detection is improved.

[0023] 2. The present invention can drive the connecting frame to rotate through the operation of the pneumatic cylinder, through the cooperation between the first connecting member and the third gear, thereby driving the feeding hopper to rotate up and down, so that the feeding hopper can transport the fertilizer transported above the conveying platform to the position of the vibrating screen, so that the transported coal can be sampled and tested, thereby speeding up the detection efficiency.

[0024] 3. The present invention can drive the first connecting member to move through the operation of the pneumatic cylinder. At this time, the first connecting member and the third gear can drive the first movable frame to move. At this time, the triangular plate will be used to squeeze one side of the second connecting member, so that the second movable frame can be driven by the second connecting member, so that the baffle is driven by the elastic force of the second spring to contact the top surface of the conveying platform, so as to block the subsequent coal particle transportation, so that the feeding hopper can fall stably on the top surface of the conveying platform, and facilitate the subsequent coal transportation.

[0025] Other advantages, objects and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0028] Figure 3 It is a structural schematic diagram of the front side of the present invention;

[0029] Figure 4 For the present invention Figure 3 Schematic diagram of a local enlarged structure;

[0030] Figure 5 It is a schematic cross-sectional structural diagram of the side of the present invention;

[0031] Figure 6 This is a schematic diagram of the disassembly structure of the slider of the present invention;

[0032] Figure 7 This is a schematic diagram of the disassembly structure of the connecting frame of the present invention;

[0033] Figure 8 It is a schematic diagram of the disassembly structure of the set square of the present invention.

[0034] In the figure: 1. Conveyor platform; 2. Fixed frame; 3. Natural ray ash analyzer; 4. Chute; 5. Slider; 6. Vibrating screen; 7. Discharge rack; 8. Rotating shaft; 9. First gear; 10. Second gear; 11. Disc; 12. Bump; 13. Groove; 14. Fixed shaft; 15. Connecting frame; 16. Circular shaft; 17. First movable frame; 18. Feed hopper; 19. Third gear; 20. Pneumatic cylinder; 21. First connecting piece; 22. Notch; 23. Triangle plate; 24. Fixed piece; 25. Connecting shaft; 26. Baffle; 27. First spring; 28. Second connecting piece; 29. ​​Limiting shaft; 30. Second movable frame; 31. Second spring. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] like Figure 1-8 As shown, the present invention provides an online ash content detection sensor device for coal preparation, comprising a conveyor platform 1 and a fixed frame 2, wherein a natural ray ash content meter 3 is installed inside the fixed frame 2, and further comprising:

[0037] A feeding mechanism, which is provided on the conveying platform 1 and is used to convey the coal to the part to be inspected;

[0038] a vibration assembly, which is arranged on the fixed frame 2 and is used to distribute the coal to be tested in an orderly manner;

[0039] Among them, the feeding mechanism includes a fixed shaft 14, two sets of fixed shafts 14 are rotatably connected on both sides of the conveying platform 1, and a connecting frame 15 is fixed on the outside of the fixed shaft 14. The outside of the connecting frame 15 is hinged with a first movable frame 17 through a circular shaft 16, and the top of the connecting frame 15 is hinged with a feeding hopper 18. A third gear 19 is installed at the end of one set of fixed shafts 14. A pneumatic cylinder 20 is installed on both sides of the conveying platform 1, and the end of the pneumatic cylinder 20 is connected to a first connecting member 21. The first movable frame 1 A notch 22 is provided on one side of 7, a triangular plate 23 is hingedly connected to the inner side of the notch 22, a fixing member 24 is fixed to the top of the conveying platform 1, a connecting shaft 25 is fixed to the inside of the fixing member 24, a second movable frame 30 and a first spring 27 are sleeved on the inner side of the connecting shaft 25, a limiting shaft 29 is sleeved on the top of the second movable frame 30, a second connecting member 28 is installed on one side of the second movable frame 30, a baffle 26 is connected to the top of the limiting shaft 29, and a second spring 31 is sleeved on the outer surface of the limiting shaft 29;

[0040] Among them, the vibration component includes a chute 4, which is arranged on both sides of the fixed frame 2. The inside of the chute 4 is slidably connected to the slider 5, and a groove 13 is opened inside the slider 5. A vibrating screen 6 is hinged between the two groups of sliders 5 through a torsion spring. A discharge rack 7 is installed above the conveying platform 1. The middle part of the conveying platform 1 is connected to the rotating shaft 8 for transmission. Both ends of the rotating shaft 8 are fixed with a first gear 9. Both sides of the fixed frame 2 are rotatably connected with the second gear 10. A disc 11 is installed on the outside of the second gear 10, and a plurality of groups of bumps 12 are installed on the outer surface of the disc 11.

[0041] The operation of the pneumatic cylinder 20 can drive the first connecting member 21 to move. At this time, the cooperation between the first connecting member 21 and the third gear 19 can drive the connecting frame 15 to rotate, so that the first movable frame 17 and the feeding hopper 18 can be driven to move through the connecting frame 15. At this time, the triangular plate 23 will squeeze one side of the second connecting member 28, so that the second movable frame 30 can be driven by the second connecting member 28, so that it can drive the baffle 26 to contact the top surface of the conveying platform 1 through the elastic force of the second spring 31, so that it blocks the subsequent coal particle transportation. At this time, the feeding hopper 18 will continue to move downward and contact the top surface of the conveying platform 1. At this time, the second connecting member 28 will correspond to the gap between the triangular plate 23 and the notch 22. Therefore, the elastic force of the first spring 27 can drive the second movable frame 30 and the baffle 26 to reset, and the accumulated coal particles will be transported to the feeding The coal particles are transported to the top of the vibrating screen 6 by driving the feeding hopper 18 through the pneumatic cylinder 20. When the feeding hopper 18 is driven by the pneumatic cylinder 20, the coal particles are transported to the top of the vibrating screen 6. When the conveying platform 1 is running, the first gear 9 is driven to rotate by the rotating shaft 8, and the disc 11 is driven to rotate by the cooperation between the first gear 9 and the second gear 10, so that the slider 5 can be intermittently squeezed by the protrusion 12, so that the slider 5 drives the vibrating screen 6 to vibrate up and down, making the coal particles inside the vibrating screen 6 more uniform, and finally discharged to the top of the conveying platform 1 through the discharge rack 7, and the coal passing through the discharge rack 7 can be detected in real time by the natural ray ash meter 3.

[0042] like Figure 3 、 4 As shown, the top of the first connecting member 21 is tooth-shaped, and the first connecting member 21 is meshedly connected with the third gear 19. When the connecting frame 15 drives the feeding hopper 18 to rotate upward, the feeding hopper 18 can contact one side of the vibrating screen 6.

[0043] Through the cooperation between the first connecting member 21 and the third gear 19, when the first connecting member 21 moves, the third gear 19 will drive the connecting frame 15 to rotate, so that the connecting frame 15 can drive the feeding hopper 18 to move, so that the feeding hopper 18 contacts the top surface of the conveying platform 1, and the coal can be transported to the inner side of the feeding hopper 18.

[0044] like Figure 5 、 6 As shown, the first gear 9 is meshed with the second gear 10 , the protrusion 12 is in press contact with the slider 5 , and a protrusion is provided on the outer side of the vibrating screen 6 , wherein the protrusion is in sliding connection with the groove 13 .

[0045] Through the cooperation between the first gear 9 and the second gear 10, when the first gear 9 rotates, the disc 11 can be driven to rotate through the second gear 10, so that through the cooperation between the protrusion 12 and the slider 5, the vibrating screen 6 can be driven to vibrate through the slider 5, so that the coal above it is more evenly distributed, which is convenient for subsequent detection.

[0046] like Figure 3 As shown, the discharge port of the vibrating screen 6 faces the discharge rack 7, and the discharge rack 7 is located directly below the probe of the natural ray ash analyzer 3.

[0047] Through the design of the vibrating screen 6, since the discharge port of the vibrating screen 6 is facing the discharge rack 7, when the vibrating screen 6 vibrates, the coal spread above it can be gradually transported to the top of the discharge rack 7. When the coal slides along the top of the discharge rack 7, the coal can be detected by the natural ray ash meter 3.

[0048] like Figure 4 、 8 As shown, one side of the second connecting member 28 protrudes outward, and the triangular plate 23 is in press contact with the second connecting member 28 .

[0049] Through the cooperation between the triangle plate 23 and the second connecting member 28, when the first movable frame 17 moves downward, the bottom surface of the triangle plate 23 will drive the second movable frame 30 to slide downward along the inner side of the connecting shaft 25 through the second connecting member 28, and when the first movable frame 17 moves upward, the inclined surface of the triangle plate 23 will be squeezed by the second connecting member 28. At this time, the triangle plate 23 will rotate along the bottom of the first movable frame 17, and avoid being blocked by the second connecting member 28 when the first movable frame 17 is reset.

[0050] like Figure 1 、 4 As shown, the first spring 27 is elastically supported between the second movable frame 30 and the conveying platform 1 , and when the triangular plate 23 presses the second connecting member 28 , the baffle 26 contacts the top surface of the conveying platform 1 .

[0051] The design of the first spring 27 enables the second movable frame 30 to have good elastic reset performance. At this time, since the first spring 27 is in a compressed state, it will apply an elastic force to the second movable frame 30, thereby driving the second movable frame 30 to move upward along the outer surface of the connecting shaft 25, so that the baffle 26 can be reset through the second movable frame 30 and the limit shaft 29.

[0052] like Figure 4 、 7 As shown, there is a gap between the triangular plate 23 and the notch 22 , and the distance between the gaps is greater than the width of the second connecting member 28 .

[0053] Through the gap between the triangular plate 23 and the notch 22 , when the triangular plate 23 moves to a position corresponding to the second connecting member 28 , the first spring 27 can drive the second movable frame 30 and the second connecting member 28 to reset.

[0054] like Figure 4 As shown, when the connecting frame 15 drives the feeding hopper 18 to rotate downward, the feeding hopper 18 can contact the top surface of the conveying platform 1. When the feeding hopper 18 contacts the top surface of the conveying platform 1, the second connecting member 28 can pass through the gap between the triangular plate 23 and the slot 22.

[0055] Through the cooperation between the connecting frame 15 and the feeding hopper 18, the feeding hopper 18 can be driven to contact the top surface of the conveying platform 1 and transport the coal to the inner side of the feeding hopper 18, so that the coal can be transported to the inner side of the vibrating screen 6 through the feeding hopper 18.

[0056] like Figure 1-8 As shown, the following steps are included:

[0057] S1. Loading operation: Place the selected coal particles on the conveying platform 1 for conveying. Use the pneumatic cylinder 20 to drive the first connecting member 21 to move. At this time, the first connecting member 21 and the third gear 19 cooperate to drive the connecting frame 15 to rotate, so that the connecting frame 15 can drive the first movable frame 17 and the feeding hopper 18 to move. The feeding hopper 18 and the first movable frame 17 are always in a horizontal state. At this time, the triangle plate 23 will squeeze one side of the second connecting member 28, so that the second movable frame 30 can be driven by the second connecting member 28, so that it drives the baffle through the elastic force of the second spring 31. 26 contacts the top surface of the conveying platform 1, so that it blocks the subsequent conveying of coal particles, and under the influence of the conveying platform 1, the conveying platform 1 located below the feeding hopper 18 is emptied. At this time, the feeding hopper 18 will continue to move downward and contact the top surface of the conveying platform 1. At this time, the second connecting member 28 will correspond to the gap between the triangular plate 23 and the notch 22. Therefore, the elastic force of the first spring 27 can drive the second movable frame 30 and the baffle 26 to reset. At this time, the accumulated coal particles will be transported to the top of the feeding hopper 18, so that the feeding hopper 18 can be driven by the pneumatic cylinder 20 to transport the coal particles to the top of the vibrating screen 6;

[0058] S2. Material is spread out. When the conveyor 1 is in operation, the first gear 9 is driven to rotate by the rotating shaft 8. The first gear 9 and the second gear 10 cooperate to drive the disc 11 to rotate. The protrusion 12 intermittently squeezes the slider 5, causing the slider 5 to drive the vibrating screen 6 to vibrate up and down, so that the coal particles inside the vibrating screen 6 are spread out and distributed more evenly.

[0059] S3. Ash content detection. When the vibrating screen 6 vibrates, the cooperation between the vibrating screen 6 and the groove 13 causes the vibrating screen 6 to intermittently tilt slightly toward the groove 13 during vibration, so that the flattened coal particles are gradually transported toward the discharge rack 7. At this time, the coal particles will gradually slide down along the inner side of the discharge rack 7, and then emit natural gamma rays through the natural ray ash analyzer 3. When the natural gamma rays emitted by these trace radioactive elements in the coal interact with the surrounding matter, the energy of the natural gamma rays is concentrated in the low-energy direction, thereby forming a low-energy peak. The spectral line shape and peak area are related to the composition of the coal. The gamma ray detector quickly detects the ash content of the coal by detecting the particle flux of the gamma rays. Since the coal particles sliding down the inner side of the discharge rack 7 are more evenly distributed, the accuracy of the coal ash content detection is improved.

[0060] Working principle:

[0061] First, the coal particles after coal selection are placed on the conveying platform 1 for conveying, and the pneumatic cylinder 20 is used to drive the first connecting member 21 to move. At this time, the connection frame 15 is driven to rotate by the cooperation between the first connecting member 21 and the third gear 19, so that the first movable frame 17 and the feeding hopper 18 can be driven by the connecting frame 15 to move, and the feeding hopper 18 and the first movable frame 17 are always in a horizontal state. At this time, one side of the second connecting member 28 will be squeezed by the triangular plate 23, so that the second movable frame 30 can be driven by the second connecting member 28 to pass through the second elastic The elastic force of the spring 31 drives the baffle 26 to contact the top surface of the conveying platform 1, so that it blocks the subsequent coal particle conveying, and under the influence of the conveying platform 1, the conveying platform 1 located below the feeding hopper 18 is emptied. At this time, the feeding hopper 18 will continue to move downward and contact the top surface of the conveying platform 1. At this time, the second connecting member 28 will correspond to the gap between the triangular plate 23 and the notch 22. Therefore, the elastic force of the first spring 27 can drive the second movable frame 30 and the baffle 26 to reset. At this time, the accumulated coal particles will be transported to the top of the feeding hopper 18, so that they can pass through The pneumatic cylinder 20 drives the feeding hopper 18 to convey the coal particles to the top of the vibrating screen 6. Then, when the conveying platform 1 is running, the first gear 9 will be driven to rotate through the rotating shaft 8, so that the disc 11 can be driven to rotate through the cooperation between the first gear 9 and the second gear 10, so that the slider 5 can be intermittently squeezed through the protrusion 12, so that the slider 5 drives the vibrating screen 6 to vibrate up and down, so that the coal particles inside the vibrating screen 6 will be flattened and distributed more evenly; then, when the vibrating screen 6 vibrates, the cooperation between the vibrating screen 6 and the groove 13 makes the vibrating screen 6 vibrate. At the same time, it will intermittently tilt slightly toward the groove 13, so that the flattened coal particles will be gradually transported toward the discharge rack 7. At this time, the coal particles will gradually slide down along the inner side of the discharge rack 7, and then emit natural gamma rays through the natural ray ash analyzer 3. When the natural gamma rays emitted by these trace radioactive elements in the coal interact with the surrounding matter, the energy of the natural gamma rays will gather toward the low-energy direction, thereby forming a low-energy peak. The spectral line shape and peak area are related to the composition of the coal. The gamma ray detector quickly detects the ash content of the coal by detecting the particle flux of the gamma rays.

[0062] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A coal preparation online ash content detection sensor device, comprising a conveyor platform (1) and a fixed frame (2), wherein a natural ray ash content meter (3) is installed on the inner side of the fixed frame (2), characterized in that: Also includes: A feeding mechanism, which is arranged on the conveying platform (1) and is used to convey the coal to the part to be inspected; A vibration assembly, which is arranged on the fixed frame (2) and is used to distribute the coal to be tested in an orderly manner; The feeding mechanism comprises a fixed shaft (14), two sets of fixed shafts (14) are rotatably connected on both sides of the conveying platform (1), a connecting frame (15) is fixed on the outside of each fixed shaft (14), a first movable frame (17) is hinged on the outside of each connecting frame (15) through a circular shaft (16), a feeding hopper (18) is hinged on the top of each connecting frame (15), a third gear (19) is installed at the end of one set of fixed shafts (14), a pneumatic cylinder (20) is installed on both sides of the conveying platform (1), an end of each pneumatic cylinder (20) is connected to a first connecting member (21), and the first movable frame (17) is hinged on the top of each connecting frame (15). A notch (22) is provided on one side, a triangular plate (23) is hingedly connected to the inner side of the notch (22), a fixing member (24) is fixed to the top of the conveying platform (1), a connecting shaft (25) is fixed inside the fixing member (24), a second movable frame (30) and a first spring (27) are sleeved on the inner side of the connecting shaft (25), a limiting shaft (29) is sleeved on the top of the second movable frame (30), a second connecting member (28) is installed on one side of the second movable frame (30), a baffle (26) is connected to the top of the limiting shaft (29), and a second spring (31) is sleeved on the outer surface of the limiting shaft (29); Wherein, the vibration component includes a slide groove (4), the slide groove (4) is arranged on both sides of the fixed frame (2), the slide groove (4) is slidably connected to the inside of the slide groove (4), the inside of the slide groove (5) is provided with a groove (13), a vibration screen (6) is hinged between the two groups of slide blocks (5) through a torsion spring, a discharge rack (7) is installed above the conveying platform (1), the middle part of the conveying platform (1) is connected to the rotating shaft (8), both ends of the rotating shaft (8) are fixed with a first gear (9), both sides of the fixed frame (2) are rotatably connected to the second gear (10), a disc (11) is installed on the outside of the second gear (10), and a plurality of groups of bumps (12) are installed on the outer surface of the disc (11); One side of the second connecting member (28) protrudes outward, the triangular plate (23) is in press contact with the second connecting member (28), the first spring (27) is elastically supported between the second movable frame (30) and the conveying platform (1), and when the triangular plate (23) presses the second connecting member (28), the baffle (26) is in contact with the top surface of the conveying platform (1); There is a gap between the triangular plate (23) and the notch (22), and the distance between the gaps is greater than the width of the second connecting member (28). When the connecting frame (15) drives the feeding hopper (18) to rotate downward, the feeding hopper (18) can contact the top surface of the conveying platform (1). When the feeding hopper (18) contacts the top surface of the conveying platform (1), the second connecting member (28) can pass through the gap between the triangular plate (23) and the notch (22).

2. The on-line ash content detection sensor device for coal preparation according to claim 1, characterized in that: The top of the first connecting member (21) is tooth-shaped, and the first connecting member (21) is meshedly connected to the third gear (19). When the connecting frame (15) drives the feeding hopper (18) to rotate upward, the feeding hopper (18) can contact one side of the vibrating screen (6).

3. The on-line ash content detection sensor device for coal preparation according to claim 1, characterized in that: The first gear (9) is meshedly connected with the second gear (10), the protrusion (12) is in press contact with the slider (5), and a protrusion is provided on the outer side of the vibrating screen (6), and the protrusion is slidably connected with the groove (13).

4. The on-line ash content detection sensor device for coal preparation according to claim 1, characterized in that: The discharge port of the vibrating screen (6) faces the discharge rack (7), and the discharge rack (7) is located directly below the probe of the natural ray ash analyzer (3).

5. A detection method for an online ash content detection sensor device for coal preparation according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Loading operation, placing the coal particles after coal selection on the conveying platform (1) for conveying, using the pneumatic cylinder (20) to drive the first connecting member (21) to move, at this time, the first connecting member (21) and the third gear (19) are matched to drive the connecting frame (15) to rotate, so that the first movable frame (17) and the feeding hopper (18) can be driven to move by the connecting frame (15), and the feeding hopper (18) and the first movable frame (17) are always in a horizontal state. At this time, the triangle plate (23) will be used to squeeze one side of the second connecting member (28), so that the second movable frame (30) can be driven by the second connecting member (28), so that the baffle ( 26) contacts the top surface of the conveying platform (1), so that it blocks the subsequent coal particle conveying, and under the influence of the conveying platform (1), the conveying platform (1) located below the feeding hopper (18) is emptied, and at this time the feeding hopper (18) will continue to move downward and contact the top surface of the conveying platform (1), and at this time the second connecting member (28) will correspond to the gap between the triangular plate (23) and the notch (22), so that the elastic force of the first spring (27) can drive the second movable frame (30) and the baffle (26) to reset, and at this time the accumulated coal particles will be transported to the top of the feeding hopper (18), so that the feeding hopper (18) can be driven by the pneumatic cylinder (20) to transport the coal particles to the top of the vibrating screen (6); S2. The material is spread out. When the conveyor (1) is in operation, the first gear (9) is driven to rotate by the rotating shaft (8), so that the disc (11) can be driven to rotate by the cooperation between the first gear (9) and the second gear (10), so that the slider (5) can be intermittently squeezed by the protrusion (12), so that the slider (5) drives the vibrating screen (6) to vibrate up and down, so that the coal particles inside the vibrating screen (6) are spread out and distributed more evenly; S3. Ash content detection. When the vibrating screen (6) vibrates, the vibrating screen (6) and the groove (13) cooperate to make the vibrating screen (6) intermittently tilt slightly toward the groove (13) during vibration, so that the flattened coal particles are gradually transported toward the discharge rack (7). At this time, the coal particles will gradually slide down along the inner side of the discharge rack (7), and then emit natural gamma rays through the natural ray ash analyzer (3). When the natural gamma rays emitted by these trace radioactive elements in the coal interact with the surrounding matter, the energy of the natural gamma rays is concentrated in the low-energy direction, thereby forming a low-energy peak. The spectral line shape and peak area are related to the composition of the coal. The gamma ray detector quickly detects the ash content of the coal by detecting the particle flux of the gamma rays. Since the coal particles sliding down the inner side of the discharge rack (7) are more evenly distributed, the accuracy of the coal ash content detection is improved.

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