Coal gangue grading and quality-based comprehensive utilization device

Abstract

The invention discloses a coal gangue grading and quality-dividing comprehensive utilization device which comprises a rack, a coal gangue grading and quality-dividing comprehensive utilization device, a coal gangue grading and quality-dividing comprehensive utilization device and a coal gangue grading and quality-dividing comprehensive utilization device. The outer cylinder is obliquely fixed to the other side of the upper end face of the rack, the outer cylinder and the sealing cylinder are concentrically arranged, and a rolling grading assembly is rotationally arranged between the outer cylinder and the sealing cylinder; the feeding seat is vertically mounted on the side wall of the sealing cylinder and is used for feeding the crushed coal gangue mineral aggregate into the rolling grading assembly for grading and grading; the external motor is fixed to the rack, a gear is fixed to the output end of the external motor, a tooth groove is formed outside the rolling grading assembly, and the external tooth motor drives the rolling grading assembly to rotate and work through the meshing effect of the gear and the tooth groove; the collecting boxes are arranged below the rack; and the discharging seat is fixed on the side wall of the lower part of the outer cylinder.

Description

Technical Field

[0001] The invention belongs to the technical field of coal gangue classification, in particular to a device for comprehensive utilization of coal gangue classification and quality classification. Background Art

[0002] The comprehensive utilization of coal gangue mainly focuses on the fuel utilization and building material utilization of coal gangue. The common practice is to crush the coal gangue to a certain particle size before use. Due to the lack of reasonable and effective sorting, coal and inorganic minerals are always mixed together, and the component composition is relatively mixed, which greatly affects the utilization of coal gangue. At present, traditional technologies mostly use drum separation to screen coal gangue, which can screen coal gangue in large quantities and can continuously feed and discharge materials, which is suitable for large-scale and continuous production operations and improves processing efficiency. However, it only relies on the centrifugal force generated by the rotation of the drum for screening. For coal gangue materials with similar particle sizes but different qualities, the screening accuracy is low, which can easily cause some of the coal gangue that should be separated to fail to be effectively separated, and cannot achieve high-precision grading and quality separation effects.

[0003] Therefore, it is necessary to provide a device for comprehensive utilization of coal gangue by grading and quality classification to solve the problems raised in the above background technology. Summary of the invention

[0004] To achieve the above object, the present invention provides the following technical solution: a device for comprehensive utilization of coal gangue by classification and quality, comprising:

[0005] The frame has a sealing cylinder fixed obliquely on one side of its upper end surface;

[0006] The outer cylinder is fixed obliquely on the other side of the upper end surface of the frame, the outer cylinder and the sealing cylinder are arranged concentrically, and a rolling grading component is rotatably arranged between the outer cylinder and the sealing cylinder;

[0007] A feed seat is vertically mounted on the side wall of the sealing cylinder and is used to feed the crushed gangue ore into the rolling classification assembly for classification and quality separation;

[0008] An external motor is fixed on the frame, a gear is fixed on the output end of the external motor, and a tooth groove is provided outside the rolling grading component, and the external gear motor drives the rolling grading component to rotate through the meshing action of the gear and the tooth groove;

[0009] A collection box arranged below the rack;

[0010] A discharge seat is fixed on the lower side wall of the outer cylinder;

[0011] The rolling grading component includes:

[0012] A drum having a plurality of through holes evenly distributed on its side wall;

[0013] A guide roller unit is coaxially rotatably arranged in the drum, and two ends of the guide roller unit are respectively connected to the outer cylinder and the sealing cylinder;

[0014] There are multiple air separation and mass separation components arranged in an array, each of which is cocentrically sleeved outside the drum. The air separation and mass separation components provide air separation and mass separation power to each through hole, so that the coal gangue ore passing through each through hole can fall into the collection box or re-enter the drum after air separation.

[0015] Further, as a preference, the air separation and quality separation component comprises:

[0016] A fixed shaft ring, a sealing rotating sleeve is arranged on the drum;

[0017] An inner ring groove is provided on the side wall of the drum, the fixed shaft ring and the inner ring groove are sealed and matched to form an annular wind bin, an air supply pipe is arranged outside the fixed shaft ring, and one end of the air supply pipe is connected to the annular wind bin through an air flow valve;

[0018] An air flow meter, mounted on the air supply pipe;

[0019] An air guide ring groove is arranged corresponding to each of the through holes. The air guide ring groove is opened on the inner wall of the through hole. A rubber ring is sealed and fixed in the through hole. The rubber ring is sealed and matched with the air guide ring groove;

[0020] An air channel is arranged in the side wall of the drum, one end of the air channel is connected with each of the air guide ring grooves, and the other end of the air channel is connected with the annular wind bin;

[0021] The air holes are circumferentially distributed outside the through hole and communicate with the through hole and the air guide ring groove.

[0022] Furthermore, preferably, the air holes are obliquely distributed on the periphery of the through hole, and the inclination angle of the air holes is not less than 55°.

[0023] Further, preferably, a sieve ring is detachably installed in the through hole, and the aperture of the sieve ring on the side close to the sealing cylinder is not larger than the aperture of the sieve ring on the side away from the sealing cylinder.

[0024] Furthermore, as a preference, an air inlet seat is sealed on the side wall of the outer cylinder, and an exhaust seat is provided outside the sealing cylinder, an exhaust pipe is connected to the outside of the exhaust seat, and the exhaust pipe cooperates with the air inlet seat to circulate the air source in the drum, so that a flow wind pressure from left to right is formed in the drum.

[0025] Further, preferably, the guide roller unit comprises:

[0026] A roller column is rotatably connected in the drum, a rotating shaft is fixed to one end of the roller column, and the rotating shaft is rotatably connected to the sealing cylinder;

[0027] A driving unit is installed on one side of the frame, and an output end of the driving unit is connected to the rotating shaft through a transmission belt for transmission;

[0028] A fixed shaft, one end of which extends into and is connected to the roller column, and the other end of which is fixed to the outer cylinder, and the roller column is rotatably connected to the fixed shaft through a bearing;

[0029] The spiral blade is installed on the rotating shaft and the roller.

[0030] Further, as a preference, the rotation direction of the roller is opposite to that of the drum, and a plurality of vibrating rollers are distributed on the roller, and the vibrating rollers are slidably connected to the roller via springs;

[0031] A plurality of convex discs are fixed inside the roller column on the fixed shaft, and the inner wall of the cross section of the convex disc is an arc-shaped windmill structure. The ends of the vibrating rollers are rotatably connected with rollers, and the rollers roll and contact along the inner wall of the convex disc.

[0032] Further, preferably, the roller column continuously rotates so that the vibrating roller radially slides inwardly when the roller wheel contacts the inner wall of the convex disk, the spring is gradually compressed, and then radial vibration is performed by the spring elastic force.

[0033] Furthermore, preferably, each of the vibrating rollers is staggered with the through holes.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The present invention is based on the drum screening structure in the traditional technology, and provides air separation and sorting power to each through hole in the drum through the air separation and sorting component, so that the coal gangue with similar quality and particle size can fall into the same collection box for collection, while the coal gangue that does not meet the quality requirements will fall back into the drum. At this time, the flow wind pressure formed by the air intake seat on the drum drives the coal gangue to the left side of the drum. At the same time, the guide roller unit can provide auxiliary vibration for the coal gangue, so that it can be re-crushed and graded again; thereby significantly improving the final grading and sorting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the present invention;

[0037] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0038] Figure 3 for Figure 1 A schematic diagram of the structure enlargement at the center A;

[0039] Figure 4It is a schematic diagram of the structure of the air guide ring groove and the air channel in the present invention;

[0040] Figure 5 is a cross-sectional view of the drum in the present invention;

[0041] Figure 6 It is a structural schematic diagram of the guide roller unit in the present invention;

[0042] Figure 7 It is a front view of the guide roller unit in the present invention;

[0043] Figure 8 is a cross-sectional view of the guide roller unit in the present invention;

[0044] In the figure: 1. frame; 11. sealing cylinder; 12. outer cylinder; 13. feed seat; 14. external motor; 15. collecting box; 16. discharge seat; 2. rolling grading assembly; 21. roller; 22. through hole; 23. sieve ring; 3. air separation and quality classification assembly; 31. fixed shaft ring; 32. inner ring groove; 33. air supply pipe; 34. air flow valve; 35. air flow meter; 36. air guide ring groove; 37. rubber ring; 38. air duct; 39. air hole; 4. guide roller unit; 41. roller column; 42. rotating shaft; 43. fixed shaft; 44. driving part; 45. spiral blade; 46. spring; 47. convex disc; 48. roller; 5. air intake seat; 51. exhaust seat; 52. exhaust pipe. DETAILED DESCRIPTION

[0045] See also Figure 1-Figure 8 In an embodiment of the present invention, a device for comprehensive utilization of coal gangue by classification and quality classification includes:

[0046] The frame 1 has a sealing cylinder 11 fixed obliquely on one side of its upper end surface;

[0047] The outer cylinder 12 is fixed obliquely on the other side of the upper end surface of the frame 1. The outer cylinder 12 and the sealing cylinder 11 are arranged concentrically, and a rolling classification component 2 is rotatably arranged between the outer cylinder 12 and the sealing cylinder 11;

[0048] The feed seat 13 is vertically mounted on the side wall of the sealing cylinder 11 and is used to feed the crushed coal gangue ore into the rolling classification assembly 2 for classification and quality separation;

[0049] An external motor 14 is fixed on the frame 1, a gear is fixed on the output end of the external motor 14, and a tooth groove is provided outside the rolling grading component 2, and the external gear motor 14 drives the rolling grading component 2 to rotate through the meshing action of the gear and the tooth groove;

[0050] The collecting box 15 is arranged below the frame 1 and can separately collect various types of coal gangue that have been graded and processed;

[0051] A discharge seat 16 is fixed on the lower side wall of the outer cylinder 12;

[0052] The rolling classification component 2 comprises:

[0053] The drum 21 has a plurality of through holes 22 evenly distributed on its side wall;

[0054] A guide roller unit 4 is coaxially rotatably disposed in the drum 21, and two ends of the guide roller unit 4 are respectively connected to the outer cylinder 12 and the sealing cylinder 13;

[0055] The air separation and sorting components 3 are arranged in a plurality, and each of the air separation and sorting components 3 is concentrically sleeved outside the drum 21. The air separation and sorting components 3 provide air separation and sorting power to each through hole 22, so that the gangue ore passing through each through hole 22 can be air-separated and fall into the collection box or re-enter the drum 21; that is, the present invention is based on the traditional drum screening structure combined with the air separation function to grade and sort the gangue, ensuring that even gangue with similar particle size but different quality can be effectively distinguished. This design not only improves the sorting accuracy, but also optimizes the processing flow, avoids unnecessary subsequent sorting, and effectively improves the comprehensive utilization effect of gangue.

[0056] In this embodiment, the air separation and quality separation component 3 includes:

[0057] A fixed shaft ring 31 is sealingly and rotatably sleeved on the drum 21;

[0058] An inner annular groove 32 is provided on the side wall of the drum 21. The fixed shaft ring 31 and the inner annular groove 32 are sealed and matched to form an annular wind bin. An air supply pipe 33 is provided outside the fixed shaft ring 31. One end of the air supply pipe 33 is connected to the annular wind bin through an air flow valve 34.

[0059] An air flow meter 35 is installed on the air supply pipe 33 and is used to monitor the air flow intensity in the air supply pipe;

[0060] The air guide ring groove 36 is arranged corresponding to each of the through holes 22. The air guide ring groove 36 is opened on the inner wall of the through hole 22. A rubber ring 37 is sealed and fixed in the through hole 22. The rubber ring 37 is sealed and matched with the air guide ring groove 36.

[0061] An air passage 38 is provided in the side wall of the drum 21, one end of the air passage 38 is connected to each of the air guide ring grooves 36, and the other end thereof is connected to the annular air bin;

[0062] The air holes 39 are circumferentially distributed outside the through hole 22, and connect the through hole 22 with the air guide ring groove 36. That is to say, in the rolling screening of the drum, the air separation and quality separation component can send the air source into the air guide ring groove through the air duct through the air supply pipe, and the air source enters the through hole through each air hole after entering the air guide ring groove, thereby forming an air separation effect in the through hole. When light coal gangue enters the through hole, it can fall back into the drum under air separation (the drum is in a continuous rolling state), so that it can be assisted by the guide roller unit to be vibrated and crushed, and re-graded and quality separated.

[0063] As a preferred embodiment, the air holes 39 are obliquely distributed on the periphery of the through hole 22, and the inclination angle of the air holes 39 is not less than 55°, which has a significant effect on the air separation of coal gangue.

[0064] In this embodiment, a sieve ring 23 is detachably installed in the through hole 22, and the aperture of the sieve ring 23 on the side close to the sealing cylinder 11 is not larger than the aperture of the sieve ring 23 on the side away from the sealing cylinder 11, so that a suitable sieve ring can be selected to screen the coal gangue according to needs.

[0065] In this embodiment, an air inlet seat 5 is sealed on the side wall of the outer cylinder 12, and an exhaust seat 51 is provided outside the sealing cylinder 11. The exhaust seat 51 is connected to an exhaust pipe 52. The exhaust pipe 52 cooperates with the air inlet seat 51 to circulate the air source in the drum 21, so that a flow wind pressure from left to right is formed in the drum 21, thereby providing a leftward driving effect for the coal gangue falling back into the drum, making it convenient for it to be re-classified and treated.

[0066] In this embodiment, the guide roller unit 4 includes:

[0067] A roller 41 is rotatably connected in the drum 21, a rotating shaft 42 is fixed to one end of the roller 41, and the rotating shaft 42 is rotatably connected to the sealing cylinder 11;

[0068] A driving unit 44 is installed on one side of the frame 1, and an output end of the driving unit 44 is connected to the rotating shaft 42 through a transmission belt for transmission;

[0069] A fixed shaft 43, one end of which is inserted into and connected to the roller 41, and the other end of which is fixed to the outer cylinder 12, and the roller 41 is rotatably connected to the fixed shaft 43 via a bearing;

[0070] The spiral blade 45 is installed on the rotating shaft 42 and the roller 41 to prevent the coal gangue from piling up. It should be noted that the guide roller unit can be stopped or rotated so as to guide the coal gangue in the drum through the spiral blade.

[0071] In this embodiment, the rotation direction of the roller 41 is opposite to the rotation direction of the drum 21, and a plurality of vibrating rollers 45 are distributed on the roller 41, and the vibrating rollers 45 are slidably connected to the roller 41 through springs 46;

[0072] A plurality of flanges 47 are fixed on the fixed shaft 43 inside the roller column 41 , and the inner wall of the flange 47 has an arc-shaped windmill structure. The ends of the vibrating roller 45 are rotatably connected to rollers 48 , and the rollers 48 roll in contact with the inner wall of the flange 47 .

[0073] As a preferred embodiment, the roller 41 rotates continuously so that the vibrating roller 45 radially slides inward under the contact between the roller 48 and the inner wall of the convex plate 47, the spring 46 is gradually compressed, and then radial vibration is performed by the elastic force of the spring 46. That is to say, the main purpose of the guide roller unit is to, on the one hand, prevent excessive internal accumulation of the coal gangue by the spiral blades, and on the other hand, to improve the vibration and crushing effect of the coal gangue through each vibrating roller, further refine the coal gangue, and promote its cracking, especially for those large pieces of material that are not fully crushed in the initial screening, which helps to reduce the particle size, making the air separation or subsequent screening process more accurate and efficient.

[0074] In this embodiment, the vibrating rollers 45 are staggered with the through holes 22 to prevent the vibrating rollers from forcibly squeezing the coal gangue through the through holes for discharge during operation.

[0075] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for comprehensive utilization of coal gangue by classification and quality, characterized by: It includes: A frame (1) has a sealing cylinder (11) fixed obliquely on one side of its upper end surface; The outer cylinder (12) is fixed obliquely on the other side of the upper end surface of the frame (1), the outer cylinder (12) and the sealing cylinder (11) are arranged concentrically, and a rolling classification component (2) is rotatably arranged between the outer cylinder (12) and the sealing cylinder (11); A feed seat (13) is vertically mounted on the side wall of the sealing cylinder (11) and is used to feed the crushed gangue material into the rolling classification assembly (2) for classification and quality separation; An external motor (14) is fixed on the frame (1); a gear is fixed to the output end of the external motor (14); and a tooth groove is provided outside the rolling classification component (2); the external gear motor (14) drives the rolling classification component (2) to rotate through the meshing action of the gear and the tooth groove; A collection box (15) arranged below the frame (1); A discharge seat (16) is fixed on the lower side wall of the outer cylinder (12); The rolling classification component (2) comprises: A roller (21) having a plurality of through holes (22) evenly distributed on its side wall; A guide roller unit (4) is coaxially rotatably disposed inside the drum (21), and two ends of the guide roller unit (4) are respectively connected to the outer cylinder (12) and the sealing cylinder (13); The pneumatic separation and sorting components (3) are arranged in a plurality, each of which is coaxially sleeved outside the drum (21). The pneumatic separation and sorting components (3) provide pneumatic separation and sorting power to each through hole (22), so that the gangue mineral material passing through each through hole (22) can fall into a collection box or re-enter the drum (21) after pneumatic separation.

2. The device for comprehensive utilization of coal gangue by classification and quality classification according to claim 1 is characterized in that: The air separation and quality classification component (3) comprises: A fixed shaft ring (31) is sealingly and rotatably sleeved on the roller (21); An inner annular groove (32) is provided on the side wall of the drum (21); the fixed shaft ring (31) and the inner annular groove (32) are sealed and matched to form an annular wind bin; an air supply pipe (33) is provided outside the fixed shaft ring (31); one end of the air supply pipe (33) is connected to the annular wind bin through an air flow valve (34); An air flow meter (35) is installed on the air supply pipe (33); An air guide ring groove (36) is arranged corresponding to each of the through holes (22) one by one. The air guide ring groove (36) is formed on the inner wall of the through hole (22). A rubber ring (37) is sealed and fixed in the through hole (22). The rubber ring (37) is in sealing cooperation with the air guide ring groove (36). An air passage (38) is arranged in the side wall of the drum (21), one end of the air passage (38) is connected to each of the air guide ring grooves (36), and the other end of the air passage (38) is connected to the annular air chamber; The air holes (39) are circumferentially distributed outside the through hole (22) and communicate with the through hole (22) and the air guide ring groove (36).

3. The device for comprehensive utilization of coal gangue by classification and quality classification according to claim 2 is characterized by: The air holes (39) are distributed obliquely on the periphery of the through hole (22), and the inclination angle of the air holes (39) is not less than 55°.

4. The device for comprehensive utilization of coal gangue by classification and quality classification according to claim 2 is characterized in that: A sieve ring (23) is detachably mounted in the through hole (22), and the aperture of the sieve ring (23) on the side close to the sealing cylinder (11) is not larger than the aperture of the sieve ring (23) on the side away from the sealing cylinder (11).

5. The device for comprehensive utilization of coal gangue by classification and quality classification according to claim 2 is characterized in that: An air inlet seat (5) is sealed on the side wall of the outer cylinder (12), and an exhaust seat (51) is arranged outside the sealing cylinder (11). An exhaust pipe (52) is connected to the outside of the exhaust seat (51). The exhaust pipe (52) cooperates with the air inlet seat (51) to circulate and transport air source in the drum (21), so that a flow wind pressure from left to right is formed in the drum (21).

6. The device for comprehensive utilization of coal gangue by classification and quality classification according to claim 1, characterized in that: The guide roller unit (4) comprises: A roller (41) is rotatably connected inside the drum (21), a rotating shaft (42) is fixed to one end of the roller (41), and the rotating shaft (42) is rotatably connected to the sealing cylinder (11); A driving unit (44) is installed on one side of the frame (1), and an output end of the driving unit (44) is connected to the rotating shaft (42) for transmission via a transmission belt; A fixed shaft (43), one end of which extends into and is connected to the roller (41), and the other end of which is fixed to the outer cylinder (12), and the roller (41) is rotatably connected to the fixed shaft (43) via a bearing; The spiral blade (45) is installed on the rotating shaft (42) and the roller (41).

7. The device for comprehensive utilization of coal gangue by classification and quality classification according to claim 6 is characterized by: The rotation direction of the roller (41) is opposite to that of the drum (21), and a plurality of vibrating rollers (45) are distributed on the roller (41), and the vibrating rollers (45) are slidably connected to the roller (41) via springs (46); A plurality of convex discs (47) are fixed on the fixed shaft (43) and located inside the roller column (41); the inner wall of the cross section of the convex disc (47) is an arc-shaped windmill structure; the ends of the vibrating rollers (45) are rotatably connected to rollers (48); and the rollers (48) roll in contact with the inner wall of the convex disc (47).

8. The device for comprehensive utilization of coal gangue by classification and quality classification according to claim 7 is characterized by: The roller column (41) continuously rotates so that the vibrating roller (45) radially slides inwards under the contact between the roller (48) and the inner wall of the convex plate (47), the spring (46) is gradually compressed, and then radial vibration is performed through the elastic force of the spring (46).

9. The device for comprehensive utilization of coal gangue by classification and quality classification according to claim 7, characterized in that: The vibration rollers (45) are staggered with the through holes (22).

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