Coal selectivity evaluation device

Abstract

The invention discloses a coal selectability evaluation device, and relates to the technical field of coal selectability. Comprising a material screening bin, a feeding bin opening fixedly formed in the top of the material screening bin, a filtering screen plate transversely arranged in a cavity of the material screening bin, a division device connected to one side of the material screening bin, a material collecting bin arranged on one side of the division device, a conveying bin arranged at the front end of the material collecting bin, a data collecting device installed at the upper end of the conveying bin and a conveying belt part arranged in a cavity of the conveying bin. The functional annular plate is arranged in a cavity of the conveying bin, and inserting holes distributed in an annular array are formed in the side face of the functional annular plate; and the inserting plate is arranged on one side of the functional annular plate, and the front end of the inserting plate is fixedly provided with an inserting convex block extending into the inserting hole groove. Coal and gangue particles moving along the surface of the hole adjusting moving plate can fall down along trapezoidal gaps, and the coal and gangue particles with different particle sizes fall into different positions of trapezoidal holes, so that the coal and gangue particles can fall onto the conveying belt part in a stepped position, and the coal and gangue particles are distributed more uniformly and reasonably.

Description

Technical Field

[0001] The present invention belongs to the technical field of coal washability, and particularly relates to a device for evaluating coal washability. Background Art

[0002] Coal is a solid combustible organic rock, mainly formed by the biochemical action of plant remains and then transformed by geological action after burial. Commonly known as coal, in addition to being used as fuel to obtain heat and kinetic energy, more importantly, coke for metallurgy and liquid products of low-temperature carbonization of coal, i.e., coal tar, which can be used to produce thousands of chemical products through chemical processing. Coal washability is the main basis for the research of coal preparation technology and the design of coal preparation plants. Therefore, the purpose of studying coal washability is to reasonably select coal preparation methods, coal preparation processes, and determine product structures, etc., in order to rationally utilize coal resources. In order to accurately evaluate coal washability, coal preparation workers at home and abroad have been continuously researching evaluation methods for washability.

[0003] Regarding coal washability, generally, coal particles are passed along a conveyor belt through the collection areas of X-rays, visible light cameras, and depth cameras to obtain the shape profiles and transmittance data of each coal particle. Through density composition determination and particle size composition determination schemes, and combined with existing developed ready-made programs, washability curves are drawn, washability values, and predicted values of various separation indexes are obtained, and graphics and related numerical values are directly output. Due to the large accumulation of coal, when coal particles enter the conveyor belt, it is easy to cause the situation of upper and lower stacked accumulation of coal particles, which greatly affects the subsequent sampling of coal particles and the judgment of numerical evaluation. Summary of the Invention

[0004] In view of the above-mentioned drawbacks of the prior art, the present invention provides a device for evaluating coal washability, which can effectively solve the problems of the prior art.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] The present invention is a device for evaluating coal washability, including: a screening bin, a feeding bin opening fixedly arranged at the top of the screening bin, a filtering sieve plate horizontally arranged in the cavity of the screening bin, and a reduction device connected to one side of the screening bin;

[0007] It is characterized in that it further includes:

[0008] A functional ring plate, placed in the cavity of the conveying bin, and the side surface of the functional ring plate is provided with mounting holes distributed in an annular array;

[0009] The insertion board is arranged on one side of the functional ring board. An insertion bump extending into the insertion jack slot is fixedly provided at the front end of the insertion board. Two groups of insertion cross boards are connected to the rear end of the insertion board and are spaced apart. The two groups of insertion cross boards are rotatably connected to the insertion board through a cross board connecting shaft. A cross board bottom groove is formed on the side surface of the insertion cross board, and a cross board inner groove is formed on the side surface of the cross board bottom groove. A movable hole-adjusting moving plate is arranged inside the cross board bottom groove and the cross board inner groove.

[0010] The adjusting rotating shaft is fixedly arranged at the bottom of the insertion cross board. A moving plate rotating hole is formed on the surface of the hole-adjusting moving plate and is rotatably sleeved outside the adjusting rotating shaft.

[0011] The moving plate driving screw is arranged in the cavity of the cross board inner groove. One end of the moving plate driving screw extends outwards through the insertion cross board to be provided with a rotating handle. A moving sleeve part is externally meshed and sleeved on the moving plate driving screw extending into the inner side of the cross board inner groove. An embedding slider is fixedly arranged on the surface of the moving sleeve part. A moving plate side sliding groove slidably adapted to the embedding slider is formed at one end of the hole-adjusting moving plate close to the moving plate driving screw.

[0012] Further, a shaft body tooth block is fixedly arranged on the end surface of the cross board connecting shaft extending into the insertion board. An adjusting block is rotatably connected to the surface of the insertion board. An adjusting screw is fixedly arranged at one end of the adjusting block extending into the insertion board. An adjusting nut sleeve is externally meshed and sleeved on the adjusting screw. A moving push rod is fixedly arranged at the front end of the adjusting nut sleeve through a support rod. Two groups of push rod side blocks are fixedly arranged at both ends of the moving push rod and are spaced apart.

[0013] Further, the moving push rod is arranged between the two groups of shaft body tooth blocks, and the push rod side blocks and the adjacent teeth of the shaft body tooth blocks are staggered.

[0014] Further, a bottom insertion rod is fixedly arranged on the bottom surface of the insertion cross board. A moving plate top groove is formed at the upper end of the hole-adjusting moving plate. The bottom of the bottom insertion rod slides along the groove of the moving plate top groove.

[0015] Further, a scale bar is arranged on one side of the moving plate top groove. An extending ring board extending towards the insertion cross board side is fixedly arranged on the inner hole side surface of the functional ring board.

[0016] Further, the ends of the aggregate bin and the material guiding bin are connected with a material guiding pipe part. The front ends of the two groups of material guiding pipe parts are arc-shaped and extend into the holes of the functional ring board.

[0017] Further, driving tooth block parts are fixedly arranged on the outer wall of the functional ring board in an annular array. A motor is fixedly arranged on the surface of the positioning ring sleeve. The output end of the motor is connected with a driving tooth roller adapted to the driving tooth block parts.

[0018] Further, a plurality of groups of insertion jacks are arranged in an annular array along the surface of the functional ring board. A bump bottom hole is formed at the bottom of the insertion bump extending into the inner side of the insertion jack.

[0019] Further, a ring plate groove portion is formed on the surface of the functional ring plate. A downward pressing grip rod is slidably connected longitudinally within the ring plate groove portion. A spring portion is fixedly provided at the bottom of the cavity of the ring plate groove portion, and the bottom of the spring portion is connected to the downward pressing grip rod. A positioning insertion rod is fixedly provided at the top of the downward pressing grip rod, and an insertion rod slope surface portion is provided on the surface of the positioning insertion rod.

[0020] A method for evaluating coal washability

[0021] S1. Batch pour coal gangue particles into the feeding bin opening. The filter sieve plate provided within the feeding bin opening filters the particle sizes. The filtered coal gangue particles fall into the aggregate bin, and the coal gangue particles above the filter sieve plate enter the reduction device for reduction and then fall into the guide bin, and are centrally distributed on the inner sides of two groups of functional ring plates through two groups of guide pipe portions.

[0022] S2. A plurality of insertion cross plates are annularly installed on the side surface of the functional ring plate, and two groups of insertion cross plates are installed at intervals. The coal gangue particles move along the inclined surfaces of the insertion cross plates and the adjustment hole moving plate. The gap between the two groups of insertion cross plates can be adjusted by the protruding position of the adjustment hole moving plate. Coal gangue particles of different sizes fall to different positions of the adjustment hole moving plate. Thus, the arrangement and distribution of coal gangue particles of different particle sizes are realized. The coal gangue particles passing through the gap of the adjustment hole moving plate fall onto the conveyor belt portion and move towards the data acquisition device.

[0023] S3. The coal gangue particles are evenly distributed in a stepped size on the conveyor belt portion without upper and lower laminations, and the data acquisition device acquires data on the evenly distributed coal gangue particles.

[0024] S4. After the coal gangue particles are data-acquired by the data acquisition device, they reach the end of the conveyor belt portion, and the sampling equipment samples and collects the coal gangue particles.

[0025] The present invention has the following beneficial effects:

[0026] Before the coal gangue particles fall onto the conveyor belt portion in the present invention, they enter the inner side of the functional ring plate. A plurality of insertion cross plates are annularly installed on the side surface of the functional ring plate, and a gap is reserved between two adjacent groups of insertion cross plates. And an adjustment hole moving plate that can protrude outward is provided on the side surface of each group of insertion cross plates. As the adjustment hole moving plate protrudes, the gap between the two groups of adjustment hole moving plates changes from a rectangular hole shape to a trapezoidal hole shape. Therefore, the coal gangue particles moving along the surface of the adjustment hole moving plate will fall along the trapezoidal gap. Coal gangue particles of different particle sizes fall to different positions of the trapezoidal hole. Thus, the coal gangue particles can be made to fall onto the conveyor belt portion in a stepped position, making the distribution of the coal gangue particles more uniform and reasonable, facilitating subsequent sampling, and at the same time making it difficult for the coal gangue particles to have upper and lower laminations, improving the accuracy of subsequent sampling and data acquisition of the coal gangue particles, and reducing the result error of coal washability.

[0027] The present invention drives the functional ring plate to rotate through a motor, so that the entire functional ring plate and the inserted transverse plates form a shaftless cylindrical structure, which has the ability to screen coal gangue particles. The distribution positions of two adjacent groups of inserted transverse plates can be adjusted according to the actual size of the coal gangue particles. At the same time, the use angle of the inserted transverse plates can also be adjusted, so that the adjusting hole moving plates distributed oppositely can be arranged in a straight line, and the protruding angle of the adjusting hole moving plates can also be adjusted according to the actual size of the coal gangue particles, with strong adjustability in actual operation and a wider scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 Schematic diagram of the present invention;

[0030] Figure 2 Cross-sectional view at the screening bin of the present invention;

[0031] Figure 3 External view at the functional ring plate of the present invention;

[0032] Figure 4 Enlarged view at the inserted transverse plate of the present invention;

[0033] Figure 5 Structural schematic diagram of the connection between the inserted transverse plate and the inserted plate of the present invention;

[0034] Figure 6 Structural schematic diagram at the adjusting block of the present invention;

[0035] Figure 7 Structural schematic diagram of the connection between the inserted plate and the inserted convex block of the present invention;

[0036] Figure 8 Exploded view of the inserted transverse plate and the adjusting hole moving plate of the present invention;

[0037] Figure 9 Structural schematic diagram at the inner groove of the transverse plate of the present invention;

[0038] Figure 10 Exploded view of the inserted convex block and the positioning insertion rod of the present invention.

[0039] In the drawings, the list of components represented by each reference numeral is as follows:

[0040] 1. Screening bin; 2. Feeding bin opening; 3. Filter sieve plate; 4. Quartering device; 5. Aggregate bin; 6. Conveyor bin; 7. Guide bin; 8. Guide pipe part; 9. Function ring plate; 10. Positioning ring sleeve; 11. Surrounding fixing plate; 12. Insertion hole; 13. Insertion cross plate; 14. Insertion plate; 15. Cross plate connecting shaft; 16. Adjustment hole moving plate; 17. Adjustment rotating shaft; 18. Driving tooth block part; 19. Driving tooth roller; 20. Extension ring plate; 21. Adjustment block; 22. Adjustment screw; 23. Adjustment screw sleeve; 24. Shaft body tooth block; 25. Moving push rod; 26. Push rod side block; 28. Moving plate driving screw; 29. Cross plate bottom groove; 30. Cross plate inner groove; 31. Moving sleeve part; 32. Pressing grip bar; 33. Moving plate rotating hole; 34. Ring plate groove part; 35. Embedded slider; 36. Moving plate side chute; 37. Bottom inserting rod; 38. Moving plate top groove; 39. Scale bar; 40. Insertion convex block; 41. Convex block bottom hole; 42. Positioning insertion rod; 43. Insertion rod slope face part; 44. Spring part; 45. Data acquisition device; 46. Conveyor belt part; 47. Sampling device. Detailed implementation mode

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation to the present invention. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0042] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0044] Please refer toFigure 1-10 As shown in the figure, the present invention is a coal washability evaluation device, comprising: a screening bin 1, a feeding bin opening 2 fixedly arranged at the top of the screening bin 1, a filtering screen plate 3 horizontally arranged in the cavity of the screening bin 1, a reduction device 4 connected to one side of the screening bin 1, an aggregate bin 5 arranged on one side of the reduction device 4, a conveying bin 6 arranged at the front end of the aggregate bin 5, a data acquisition device 45 installed at the upper end of the conveying bin 6, and a conveyor belt part 46 arranged in the cavity of the conveying bin 6. A sampling device 47 is arranged at the end of the conveyor belt part 46. The top and bottom of the sampling device 47 are pushed by an electric push rod to achieve lateral displacement. By the lateral displacement of the sampling device 47 below the end of the conveyor belt part 46, the coal gangue particles falling at the conveyor belt part 46 can be picked, so as to realize the sampling work of the sample. A batch of coal gangue particles fall from the feeding bin opening 2 into the screening bin 1. The filtering screen plate 3 intercepts the coal gangue particles. The coal gangue particles passing through the filtering screen plate 3 slide along the inclined plane at the bottom of the screening bin 1 into the aggregate bin 5, while the coal gangue particles moving along the surface of the inclined filtering screen plate 3 enter the reduction device 4 for reduction. The reduced particles fall into the guide bin 7. Guide pipe parts 8 are arranged on the sides of the aggregate bin 5 and the guide bin 7, so that the coal gangue particles enter the cavity of the conveying bin 6 through the guide pipe parts 8. Two sets of oppositely distributed functional ring plates 9 are arranged at the end position of the conveying bin 6. At the same time, the functional ring plates 9 are annular. The inner wall of the annular functional ring plates 9 is inclined. The end of the guide pipe part 8 is in an arc-shaped bending part, and the end of the guide pipe part 8 extends into the groove of the functional ring plate 9, so that the coal gangue particles fall onto the arc-shaped inner wall of the functional ring plate 9 and move along the inclined plane to one side of the functional ring plate 9.

[0045] On the side of the functional ring plate 9, insertion holes 12 are arranged in an annular array. Each group of insertion holes 12 can be adjacent to the insertion cross plate 13. An insertion plate 14 is arranged on the end face of the insertion cross plate 13, and insertion bumps 40 that can extend into the insertion holes 12 are fixedly arranged on the surface of the insertion plate 14. By inserting the insertion bumps 40 into the insertion holes 12 at different positions, the distance between two adjacent groups of insertion cross plates 13 can be adjusted. After installing multiple groups of insertion cross plates 13, a shaftless and unclosed cylindrical shape is formed in the space on one side of the functional ring plate 9. The coal gangue particles entering the inner side of the functional ring plate 9 fall onto the conveyor belt along the gaps between two adjacent groups of insertion cross plates 13. Since the functional ring plate 9 is symmetrically distributed, a row of coal gangue particles will appear on the conveyor belt part 46. In order to evenly distribute the coal gangue particles in a stepped manner on the conveyor belt part 46, the insertion cross plates 13 and the adjusting hole moving plates 16 are both inclined downward at a certain angle, so that the coal gangue particles move obliquely downward along the surfaces of the insertion cross plates 13 and the adjusting hole moving plates 16. A bottom groove 29 of the cross plate is opened on the side of the insertion cross plate 13, and an inner groove 30 of the cross plate is opened on the side groove surface of the bottom groove 29 of the cross plate, so that the adjusting hole moving plate 16 is installed in the inner groove 30 of the cross plate. Two groups of symmetrically distributed insertion cross plates 13 are arranged on the surface of each insertion plate 14. An extension ring plate 20 extending towards the side of the insertion cross plate 13 is fixedly arranged on the inner hole side surface of the functional ring plate 9. One end of the adjusting hole moving plate 16 is provided with a moving plate rotation hole 33, and an adjusting rotating shaft 17 is fixedly arranged at the bottom of the insertion cross plate 13, so that the moving plate rotation hole 33 is nested outside the adjusting rotating shaft 17, so that the adjusting hole moving plate 16 can rotate along the adjusting rotating shaft 17. When the adjusting hole moving plate 16 extends outwards from the inner groove 30 of the cross plate, the gap between two adjacent groups of adjusting hole moving plates 16 changes from the original rectangular hole to a trapezoidal hole. In this way, the coal gangue particles move along the gap of the trapezoidal hole and will fall in a stepped manner and fall onto the conveyor belt part 46. In order to adjust the extending position of the adjusting hole moving plate 16, a moving plate driving screw rod 28 is also installed in the inner groove 30 of the cross plate. One end of the moving plate driving screw rod 28 extends outwards through the insertion cross plate 13 to set a rotating handle. An outer meshing sleeve 31 is sleeved outside the moving plate driving screw rod 28 extending into the inner side of the inner groove 30 of the cross plate. An embedded slider 35 is fixedly arranged on the surface of the outer meshing sleeve 31. A side sliding groove 36 of the moving plate that is slidably matched with the embedded slider 35 is opened at one end of the adjusting hole moving plate 16 close to the moving plate driving screw rod 28, that is, the embedded slider 35 is slidably embedded into the side sliding groove 36 of the moving plate. By driving the rotating handle, the moving plate driving screw rod 28 can rotate in the inner groove 30 of the cross plate, so that the embedded slider 35 moves radially along the surface of the side sliding groove 36 of the moving plate, and then the embedded slider 35 is used to push the side sliding groove 36 of the moving plate, so that the adjusting hole moving plate 16 performs a rotating action. In order to improve the rotation stability of the adjusting hole moving plate 16, an arc-shaped top groove 38 of the moving plate is opened at the top of the adjusting hole moving plate 16. At the same time, a bottom inserting rod 37 is fixedly arranged at the bottom of the insertion cross plate 13, so that the front end of the bottom inserting rod 37 is embedded into the top groove 38 of the moving plate, and the bottom inserting rod 37 can slide along the groove of the top groove 38 of the moving plate. In order to more accurately adjust the rotation angle of the adjusting hole moving plate 16,A scale bar 39 is also provided on the surface of the hole-adjusting shifting plate 16 and on one side of the shifting plate top groove 38. After the hole-adjusting shifting plate 16 rotates out of the inner groove 30 of the horizontal plate, the value of the scale bar 39 can be obtained above the upper part of the inserted horizontal plate 13, so as to more accurately control the hole-adjusting shifting plate 16;

[0046] The connection between the horizontal plate connecting shaft 15 and the inserting plate 14 is rotatable. An end face of the horizontal plate connecting shaft 15 extending into the inserting plate 14 is fixedly provided with a shaft body tooth block 24. A regulating block 21 is rotatably connected to the surface of the inserting plate 14. One end of the regulating block 21 extending into the inserting plate 14 is fixedly provided with a regulating screw rod 22. An adjusting nut 23 is externally engaged and sleeved on the regulating screw rod 22. The front end of the adjusting nut 23 is fixedly provided with a moving push rod 25 through a support rod. Both ends of the moving push rod 25 are fixedly provided with push rod side blocks 26 distributed at intervals. The end of the regulating block 21 is exposed downward from the lower part of the inserting plate 14, that is, by operating the exposed end of the regulating block 21, the regulating block 21 can be driven to rotate in the inserting plate 14. After the inserting plate 14 rotates, it can push the adjusting nut 23 to move radially along the surface of the regulating screw rod 22. The adjusting nut 23 is connected to the moving push rod 25 through a support rod to move synchronously. The push rod side blocks 26 can push the staggered shaft body tooth blocks 24 to cause the horizontal plate connecting shaft 15 to rotate, so that the actual use angles of the inserted horizontal plate 13 and the hole-adjusting shifting plate 16 can be adjusted, and the two inserted horizontal plates 13 above a group of inserting plates 14 can be adjusted independently.

[0047] The outer wall of the functional ring plate 9 is sleeved with a positioning ring sleeve 10 around it. The positioning ring sleeve 10 supports the position of the functional ring plate 9. By driving the driving gear roller 19 with a motor, the driving gear block part 18 adapted to the driving gear roller 19 can push the functional ring plate 9 to rotate inside the positioning ring sleeve 10. The tops of the two groups of symmetrically distributed positioning ring sleeves 10 are fixedly connected and reinforced through a surrounding fixing plate 11. The top of the surrounding fixing plate 11 is fixedly arranged on the upper surface of the conveying bin 6. The coal gangue particles falling from one side of the adjusting hole moving plate 16 fall onto the conveyor belt part 46, move along the conveyor belt part 46 to the data acquisition device 45 for data acquisition, and are discharged from the end of the conveyor belt part 46, and sample collection is carried out by the sampling device 47. The safety insertion holes 12 formed in a ring shape can be combined with the safety insertion protrusions 40 fixedly arranged on the side surface of the safety insertion plate 14. When the safety insertion protrusions 40 are inserted into the safety insertion holes 12 at different positions, the distance between two adjacent safety insertion cross plates 13 can be adjusted greatly. The bottom of the safety insertion protrusion 40 extending into the inner side of the safety insertion hole 12 is provided with a protrusion bottom hole 41. The surface of the functional ring plate 9 is provided with a ring plate groove part 34. A downward pressing grip rod 32 is longitudinally slidably connected in the ring plate groove part 34. A spring part 44 is fixedly arranged at the bottom of the cavity of the ring plate groove part 34. The bottom of the spring part 44 is connected to the downward pressing grip rod 32. The top of the downward pressing grip rod 32 is fixedly provided with a positioning insertion rod 42. The surface of the positioning insertion rod 42 is provided with an insertion rod slope surface part 43. The safety insertion protrusion 40 is extended into the safety insertion hole 12, and the front end of the safety insertion protrusion 40 presses down the inclined surface of the insertion rod slope surface part 43. When the protrusion bottom hole 41 reaches directly above the positioning insertion rod 42, the elastic drive of the spring part 44 makes the positioning insertion rod 42 move upward, and the top of the positioning insertion rod 42 is clamped into the protrusion bottom hole 41, and thus the installation of the position of the safety insertion plate 14 can be completed.

[0048] The method is as follows: S1. Pour a batch of coal gangue particles into the feeding bin opening 2. The filter sieve plate 3 arranged in the feeding bin opening 2 filters the particle sizes. The filtered coal gangue particles fall into the aggregate bin 5. The coal gangue particles above the filter sieve plate 3 enter the reduction device 4 for reduction and then fall into the guide bin 7, and are centrally distributed on the inner sides of the two functional ring plates 9 through the two guide pipe parts 8.

[0049] S2. A plurality of safety insertion cross plates 13 are annularly installed on the side surface of the functional ring plate 9, and the two safety insertion cross plates 13 are installed at intervals. The coal gangue particles move along the slopes of the safety insertion cross plates 13 and the adjusting hole moving plate 16. The gap between the two safety insertion cross plates 13 can be adjusted by the protruding position of the adjusting hole moving plate 16. Coal gangue particles of different sizes fall to different positions of the adjusting hole moving plate 16, thereby realizing the arrangement and distribution of coal gangue particles of different particle sizes. The coal gangue particles passing through the gap of the adjusting hole moving plate 16 fall onto the conveyor belt part 46 and move towards the data acquisition device 45.

[0050] S3. The coal gangue particles are evenly distributed in a stepped manner on the conveyor belt section 46 without upper and lower laminations. The data acquisition device 45 collects data on the evenly distributed coal gangue particles. The data acquisition device 45 uses X-rays, visible light cameras, and depth cameras to collect areas, obtains the shape contours and transmittance data of each coal particle, and through density composition determination and particle size composition determination schemes, and combines with existing developed programs, to draw washability curves, predict washability values and various separation index prediction values, and directly output graphics and related numerical values.

[0051] S4. After the coal gangue particles are collected by the data acquisition device 45, they reach the end of the conveyor belt section 46, and the sampling device 47 samples the coal gangue particles.

[0052] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claims.

[0053] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A coal washability evaluation device, comprising: Screening bin (1), feeding bin opening (2) fixedly arranged at the top of the screening bin (1), filtering screen plate (3) horizontally arranged in the cavity of the screening bin (1), and reduction device (4) connected to one side of the screening bin (1); It is characterized in that it further includes: Function ring plate (9), placed in the cavity of the conveying bin (6), and mounting holes (12) distributed in an annular array are arranged on the side surface of the function ring plate (9); Insertion plate (14), arranged on one side of the function ring plate (9), and insertion bumps (40) extending into the slots of the mounting holes (12) are fixedly arranged at the front end of the insertion plate (14); Two groups of spaced insertion cross plates (13) are connected to the rear end of the insertion plate (14). The two groups of insertion cross plates (13) and the insertion plate (14) are rotationally connected through a cross plate connecting shaft (15). A cross plate bottom groove (29) is arranged on the side surface of the insertion cross plate (13), a cross plate inner groove (30) is arranged on the side surface of the cross plate bottom groove (29), and a movable adjusting hole moving plate (16) is arranged inside the cross plate bottom groove (29) and the cross plate inner groove (30).

2. The coal washability evaluation device according to claim 1, characterized in that Adjusting rotating shaft (17), fixedly arranged at the bottom of the insertion cross plate (13), and a moving plate rotating hole (33) rotatably sleeved on the outside of the adjusting rotating shaft (17) is arranged on the surface of the adjusting hole moving plate (16); Moving plate driving screw (28), arranged in the cavity of the cross plate inner groove (30). One end of the moving plate driving screw (28) extends outward through the insertion cross plate (13) to set a rotating handle. A moving sleeve part (31) is externally meshed and sleeved on the outside of the moving plate driving screw (28) extending into the inner side of the cross plate inner groove (30). An embedding slider (35) is fixedly arranged on the surface of the moving sleeve part (31). A moving plate side sliding groove (36) slidably adapted to the embedding slider (35) is arranged at one end of the adjusting hole moving plate (16) close to the moving plate driving screw (28).

3. The coal washability evaluation device according to claim 2, wherein An end surface of the cross plate connecting shaft (15) extending into the insertion plate (14) is fixedly provided with a shaft body tooth block (24). An adjusting block (21) is rotatably connected to the surface of the insertion plate (14). An adjusting screw (22) is fixedly arranged at one end of the adjusting block (21) extending into the insertion plate (14). An adjusting nut sleeve (23) is externally meshed and sleeved on the adjusting screw (22). A moving push rod (25) is fixedly arranged at the front end of the adjusting nut sleeve (23) through a support rod. Push rod side blocks (26) are fixedly arranged at both ends of the moving push rod (25) at intervals.

4. The coal washability evaluation device according to claim 1, characterized in that The moving push rod (25) is placed between the two groups of shaft body tooth blocks (24), and the push rod side blocks (26) and the adjacent teeth of the shaft body tooth blocks (24) are staggered.

5. An apparatus for evaluating the washability of coal according to claim 4, characterized in that, A bottom insertion rod (37) is fixedly arranged on the bottom surface of the insertion cross plate (13). A moving plate top groove (38) is arranged at the upper end of the adjusting hole moving plate (16). The bottom of the bottom insertion rod (37) slides along the groove of the moving plate top groove (38).

6. The coal washability evaluation device according to claim 1, characterized in that A scale bar (39) is arranged on one side of the moving plate top groove (38). An extension ring plate (20) extending towards the side of the insertion cross plate (13) is fixedly arranged on the inner hole side surface of the function ring plate (9).

7. The coal washability evaluation device according to claim 1, wherein, The ends of the aggregate bin (5) and the material guiding bin (7) are connected with a material guiding pipe part (8). The front ends of the two groups of material guiding pipe parts (8) are designed in an arc shape and extend into the holes of the functional ring plate (9). The outer wall of the functional ring plate (9) is fixedly provided with a driving tooth block part (18) distributed in an annular array. The surface of the positioning ring sleeve (10) is fixedly provided with a motor, and the output end of the motor is connected with a driving tooth roller (19) adapted to the driving tooth block part (18).

8. The coal washability evaluation device according to claim 1, wherein, A plurality of groups of insertion holes (12) are arranged in an annular array on the surface of the functional ring plate (9). The bottom of the insertion convex block (40) extending into the inner side of the insertion hole (12) is provided with a convex block bottom hole (41).

9. The coal washability evaluation device according to claim 1, characterized in that A ring plate groove part (34) is formed on the surface of the functional ring plate (9). A downward pressing grip rod (32) is longitudinally slidably connected in the ring plate groove part (34). A spring part (44) is fixedly arranged at the bottom of the cavity of the ring plate groove part (34). The bottom of the spring part (44) is connected with the downward pressing grip rod (32). A positioning insertion rod (42) is fixedly arranged at the top of the downward pressing grip rod (32). An inclined surface part (43) of the insertion rod is arranged on the surface of the positioning insertion rod (42).

10. A method for evaluating coal washability according to claim 1, characterized in that: S1. Batch pour coal gangue particles into the feeding bin opening (2). The filter sieve plate (3) arranged in the feeding bin opening (2) filters the particle sizes. The filtered coal gangue particles fall into the aggregate bin (5). The coal gangue particles above the filter sieve plate (3) enter the quartering device (4) for quartering and then fall into the material guiding bin (7), and are centrally distributed on the inner sides of the two groups of functional ring plates (9) through the two groups of material guiding pipe parts (8). S2. A plurality of groups of insertion cross plates (13) are annularly installed on the side surface of the functional ring plate (9), and the two groups of insertion cross plates (13) are installed at intervals. The coal gangue particles move along the inclined surfaces of the insertion cross plates (13) and the hole-adjusting movable plate (16). The gap between the two groups of insertion cross plates (13) can be adjusted by the protruding position of the hole-adjusting movable plate (16). Coal gangue particles of different sizes fall into different positions of the hole-adjusting movable plate (16), thereby realizing the arrangement and distribution of coal gangue particles of different particle sizes. The coal gangue particles passing through the gap of the hole-adjusting movable plate (16) move towards the data acquisition device (45) on the conveyor belt part (46). S3. The coal gangue particles are evenly distributed in a stepped size on the conveyor belt part (46) without upper and lower overlapping layers, and the data acquisition device (45) collects data on the evenly distributed coal gangue particles. S4. After the coal gangue particles are collected by the data acquisition device (45), they reach the end of the conveyor belt part (46), and the sampling equipment (47) samples and collects the coal gangue particles.

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