A material queuing system for coal separation

Abstract

The application provides a material queuing system for coal sorting, which comprises a queuing mechanism, a vibrating feeder, a feeding belt, a return material belt, a return material climbing belt and a return material guide chute, the return material belt, the return material climbing belt and the return material guide chute are sequentially connected, the return material guide chute has a slope, one end of the feeding belt is connected with the vibrating feeder, the queuing mechanism comprises a belt, a roller, a sorting baffle and a feeding port, the belt is driven by the roller, the sorting baffle is arranged above the belt, the return material belt is arranged on one side below the belt, and the belt is supported by a rack. The application provides a high-efficiency, rapid and safe solution, which is applied to an intelligent sorting system, facilitates accurate identification of sorted materials by a subsequent identification device, realizes separation of coal and gangue, and adapts to the coal mine production capacity requirement in the processing capacity. Moreover, the application can also solve the environmental pollution and production safety problems existing in the current intelligent dry sorting method.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of coal separation in coal mines, and particularly to an intelligent coal gangue separation system. BACKGROUND

[0002] Coal gangue is a black gray rock with low carbon content and higher hardness than coal, which is associated with coal seams during coal formation, including tunneling gangue in the process of tunneling, gangue mined from the roof, floor and interlayer during mining, and gangue picked out during coal washing, and is a solid waste discharged during the process of coal mining and washing. At present, there are mainly wet coal separation and dry coal separation, among which wet coal separation includes jigging, flow channel separation (channel washing), table separation, and heavy medium separation, and dry coal separation mainly includes manual sorting and intelligent dry separation.

[0003] Intelligent dry separation has the characteristics of low production cost and no pollution, and is the main development direction of coal gangue separation in the future. Intelligent dry separation includes two main links, namely intelligent identification and coal gangue separation. There are currently two technical directions for intelligent identification, one is based on X-ray and image recognition technology, and an analysis model suitable for different coal quality characteristics is established to digitally identify coal and gangue; the other is based on visible light computer vision technology, and a neural network algorithm is used to train a coal gangue identification data model to intelligently identify coal and gangue. Coal gangue separation is based on coal gangue identification and uses corresponding sorting methods to discharge gangue. The main sorting methods at present include mechanical hand grabbing and high-pressure gas blowing.

[0004] The production capacity of underground coal mines is at least thousands of tons per hour, and the action frequency of mechanical hands is low, so the processing capacity cannot meet the production capacity requirements of coal mines. High-pressure blowing is the most commonly used coal gangue separation method in intelligent dry separation. High-pressure blowing has high noise and serious environmental pollution, and the coal dust generated by high-pressure blowing poses a safety hazard and can easily cause coal dust explosion and other safety production accidents. The reason why most people use high-pressure blowing technology is that there is currently no effective material queuing technology to support coal intelligent separation projects. SUMMARY

[0005] In order to improve the current technical status of intelligent dry separation systems, the present application proposes a high-efficiency, fast and safe material queuing solution that can not only adapt to the production capacity requirements of coal mines in terms of processing capacity, but also solve the problems of environmental pollution and safety hazards caused by high-pressure blowing. The present application can be combined with image recognition technology based on X-ray or computer vision technology based on visible light.

[0006] The application provides a material queuing system for coal sorting, which comprises a queuing mechanism, a vibrating feeder 4, a feeding belt 5, a return material belt 8, a return material climbing belt 9 and a return material guide groove 10, wherein the return material belt 8, the return material climbing belt 9 and the return material guide groove 10 are sequentially connected, the return material guide groove 10 has a slope, one end of the feeding belt 5 is connected with the vibrating feeder 4, and the queuing mechanism comprises a belt, a roller 23, a sorting baffle and a feeding port 28, the belt is driven by the roller 23, the sorting baffle is arranged above the belt, the return material belt 8 is arranged on one side below the belt, and the belt is supported by a rack.

[0007] Further, the belt in the queuing mechanism is provided with a plurality of belts, the plurality of belts are arranged in parallel, the queuing mechanism further comprises a belt pressing wheel and a baffle, the belt pressing wheel is arranged at a position corresponding to the sorting baffle on the belt, so that a gap is formed between two adjacent belts, the baffle is arranged between the two adjacent belts, and the gap between the two adjacent belts is closed by the baffle, and the plurality of belts are supported by the rack.

[0008] Further, the queuing mechanism comprises a left queuing mechanism 1 and a right queuing mechanism 2, the left queuing mechanism 1 and the right queuing mechanism 2 are arranged in parallel and have a symmetrical structure.

[0009] Further, the plurality of belts of the left queuing mechanism 1 are arranged in a manner that the gaps between the belts increase from inside to outside, the gaps of the belts arranged from inside to outside of the left queuing mechanism 1 and the right queuing mechanism 2 increase from small to large, the plurality of belts of the right queuing mechanism 2 are symmetrically arranged with the plurality of belts of the left queuing mechanism 1, the left queuing mechanism 1 and the right queuing mechanism 2 are arranged below the outermost belts and are respectively provided with return material belts 8, and a vibrating feeder baffle 6 is further arranged between the left queuing mechanism 1 and the right queuing mechanism 2.

[0010] Further, the plurality of belts of the left queuing mechanism 1 are arranged in a manner that the gaps between the belts decrease from inside to outside, the gaps of the belts arranged from inside to outside of the left queuing mechanism 1 and the right queuing mechanism 2 decrease from large to small, the plurality of belts of the right queuing mechanism 2 are symmetrically arranged with the plurality of belts of the left queuing mechanism 1, and a feeding port 3 and a vibrating feeder baffle 6 are further arranged between the adjacent belts of the left queuing mechanism 1 and the right queuing mechanism 2, and the return material belt 8 is arranged below the feeding port 3.

[0011] Further, the material queuing system for coal sorting is characterized in that the return material guide groove 10 is connected with the feeding belt 5 or the vibrating feeder 4.

[0012] Further, the gaps between the plurality of belts of the left queuing mechanism 1 are equal to the gaps between the plurality of belts of the right queuing mechanism 2.

[0013] Further, the racks are all modularly arranged.

[0014] The application has the advantages that a high-efficiency, fast and safe material queuing solution is provided, which is applied to an intelligent sorting system, so that a subsequent recognition device can accurately recognize the sorted materials, coal and gangue are separated, the processing capacity meets the coal production capacity requirement, environmental pollution and production safety problems existing in the current intelligent dry sorting method are solved, and good economic and social benefits are obtained.

[0015] The specific embodiments of the application are described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Fig. 1 is a structural schematic diagram of an embodiment of the material queuing system for coal sorting according to the application.

[0017] Figure 2 Fig. 2 is a structural schematic diagram of the queuing mechanism according to the application.

[0018] Figure 3 Fig. 3 is a structural schematic diagram of another embodiment of the material queuing system for coal sorting according to the application.

[0019] Fig. 1 is a structural schematic diagram of an embodiment of the material queuing system for coal sorting according to the application.

[0020] 21-1: 1# belt; 21-2: 2# belt; 21-3: 3# belt;

[0021] 23: roller;

[0022] 24-1: first baffle; 24-2: second baffle;

[0023] 25-1: first sorting baffle; 25-2: second sorting baffle; 25-3: third sorting baffle;

[0024] 26: 2# belt roller; 27-1: 3# belt I-stage roller; 27-2: 3# belt II-stage roller;

[0025] 28: feeding port;

[0026] 3: discharging port; 4: vibrating feeder; 5: feeding belt; 6: vibrating feeder baffle;

[0027] 7: return material baffle; 8: return material belt; 9: return material climbing belt; 10: return material guide groove. DETAILED DESCRIPTION

[0028] It should be understood that, according to the technical solutions of the present application, various structural modes and the implementation of the present application can be replaced by those skilled in the art without changing the essential spirit of the present application. Therefore, the following specific embodiments, the numbers or data used, and the drawings are only exemplary descriptions of the technical solutions of the present application, and should not be considered as the whole or as a limiting language for the technical solutions of the present application.

[0029] In this specification, the orientation terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or possibly mentioned are defined with respect to the structure shown in the drawings, which are relative concepts, so it is possible to change accordingly according to different positions and different use states. Therefore, these or other orientation terms should not be interpreted as limiting language.

[0030] Example One

[0031] The present embodiment provides a material queuing system for coal sorting, as shown in Figure 1 The material queuing system for coal sorting provided by the present embodiment includes left queuing mechanism 1, right queuing mechanism 2, discharge port 3, vibrating feeder 4, feeding belt 5, vibrating feeder baffle 6, return material baffle 7, return material belt 8, return material climbing belt 9, and return material guide chute 10. The left queuing mechanism 1 and the right queuing mechanism 2 each include three belts, the left queuing mechanism 1 and the right queuing mechanism 2 are arranged in parallel, both are symmetrical structures, and the corresponding three belts of both are arranged in a decreasing drop manner, that is, the belts arranged from inside to outside of the left queuing mechanism 1 and the right queuing mechanism 2 have a drop from large to small, and the adjacent inside belts in the left and right queuing mechanisms are provided with a discharge port 3. The left and right queuing mechanisms are separated by a gap of about 300mm, and the gap is provided below with a return material baffle 7, the return material baffle 7 has a certain slope and is inclined to one side of the return material belt 8, the tail end of the return material belt 8 is connected with the return material climbing belt 9, the tail end of the return material climbing belt 9 is connected with the return material guide chute 10, the return material guide chute 10 has a certain slope, and the tail end of the return material guide chute 10 is connected with the feeding belt 5. When part of the material falls from the gap between the left queuing mechanism 1 and the right queuing mechanism 2, it will be caught by the return material baffle 7 and slide along the slope of the return material baffle 7 to the return material belt 8, and then be transported to the feeding belt 5 through the return material climbing belt 9 and the return material guide chute 10, and then enter the queuing system again.

[0032] The feeding belt 5 is connected to the vibrating feeder 4. On the vibrating feeder 4, there is a vibrating feeder baffle 6 between the left queuing mechanism 1 and the right queuing mechanism 2. The feeding belt 5 can transport the material into the scoop-shaped vibrating feeder 4. After being vibrated by the vibrator, the material will not "stack" but will be in a "flat" state. The vibrating feeder 4 has a certain downward slope. Under the vibration state, the material will slide towards the left queuing mechanism 1 and the right queuing mechanism 2. Under the action of the vibrating feeder baffle 6, the material will enter the left queuing mechanism 1 and the right queuing mechanism 2 evenly.

[0033] The structure of the queuing mechanism will be described in detail below, taking the right queuing mechanism 2 as an example.

[0034] like Figure 2As shown, the right queuing mechanism 2 in the embodiment is provided with three belts, including a 1# belt 21-1, a 2# belt 21-2, a 3# belt 21-3, a roller 23, a first baffle 24-1, a second baffle 24-2, a first sorting baffle 25-1, a second sorting baffle 25-2, a third sorting baffle 25-3, a 2# belt pressure roller 26, a 3# belt I-level pressure roller 27-1, a 3# belt II-level pressure roller 27-2, and a feeding port 28. The 1# belt 21-1, the 2# belt 21-2, and the 3# belt 21-3 all have a width of 250 mm, are all supported by a rack, and are all driven by the roller 3. The first sorting baffle 25-1 is arranged above the 1# belt 21-1 and close to the upper surface of the 1# belt 21-1. The second sorting baffle 25-2 is arranged above the 2# belt 21-2 and close to the upper surface of the 2# belt 21-2. The third sorting baffle 25-3 is arranged above the 3# belt 21-3 and close to the upper surface of the 3# belt 21-3. On the 2# belt 21-2, a 2# belt pressure roller 26 is arranged at a position corresponding to the first sorting baffle 25-1, so that the 2# belt 21-2 forms a 100 mm drop with the 1# belt 21-1, and the gap between the 1# belt 21-1 and the 2# belt 21-2 is closed by the first baffle 24-1, so as to avoid the materials rolling down to the gap between the 1# belt 21-1 and the 2# belt 21-2 and affecting the normal operation of the system. Similarly, on the 3# belt 21-3, a 3# belt I-level pressure roller 27-1 is arranged at a position corresponding to the first sorting baffle 25-1, so that the 3# belt 21-3 forms a 100 mm drop with the 1# belt 21-1, and a 3# belt II-level pressure roller 27-2 is arranged on the 3# belt 21-3 at a position corresponding to the second sorting baffle 25-2, so that the 3# belt 21-3 forms a 100 mm drop with the 2# belt 21-2, and the gap between the 2# belt 21-2 and the 3# belt 21-3 is closed by the second baffle 24-2. In the embodiment, the materials to be queued have a diameter of 100-200 mm. The materials enter the right queuing mechanism 2 from the feeding port 28 and move along the running direction of each belt. When the first sorting baffle 25-1 forms a through gap of less than 150 mm with the 1# belt 21-2, the materials with a diameter of 100-200 mm can only pass through one piece. Since there is a drop between the 1# belt 21-1 and the 2# belt 21-2, the materials parallel on the 1# belt 21-1 will roll down to the 2# belt 21-2. Similarly, since there is a drop between the 2# belt 21-2 and the 3# belt 21-3, the materials parallel on the 2# belt 21-2 will roll down to the 3# belt 21-3, and the materials parallel on the 3# belt 21-3 will roll down to the dropping port 3. When the materials move to the tail of the queuing mechanism (see Figure 2When the left end of the left queueing mechanism 1 is reached, the material is automatically formed into three rows, thereby achieving material queuing. The left queueing mechanism 1 of the embodiment is designed in the same way as the right queueing mechanism 2.

[0035] In order to facilitate transportation, the racks for supporting the left queueing mechanism 1 and the right queueing mechanism 2 are designed in a modular way in the embodiment, and each rack is composed of three modules. After the modular design, the length, width and height of each rack module do not exceed 2 meters, so as to facilitate transportation in a coal mine.

[0036] Example Two

[0037] The embodiment provides another embodiment of a material queuing system for coal sorting, as shown in Figure 3 The material queuing system for coal sorting comprises a left queueing mechanism 1, a right queueing mechanism 2, a vibrating feeder 4, a feeding belt 5, a return belt 8, a return climbing belt 9 and a return chute 10. The left queueing mechanism 1 and the right queueing mechanism 2 each comprise three belts. The left queueing mechanism 1 and the right queueing mechanism 2 are arranged in parallel and are symmetrical structures. The three belts corresponding to the left queueing mechanism 1 and the right queueing mechanism 2 are arranged in a way that the drop difference increases, that is, the belts arranged from inside to outside of the left queueing mechanism 1 and the right queueing mechanism 2 have a drop difference that increases from small to large, and the inner belts of the left queueing mechanism 1 and the right queueing mechanism 2 are arranged close to each other. The specific structure of the queueing mechanism in the embodiment is shown in Figure 2 The outermost belts of the left queueing mechanism 1 and the right queueing mechanism 2 are respectively provided below with the return belt 8. The tail end of the return belt 8 is connected to the return climbing belt 9, the tail end of the return climbing belt 9 is connected to the return chute 10, the return chute 10 has a certain slope, and the tail end of the return chute 10 is connected to the vibrating feeder 4 through the return climbing belt 9 and the return chute 10. When part of the material falls from the edge of the outermost belt of the left queueing mechanism 1 and the right queueing mechanism 2, the material is caught by the return belt 8 and then transported to the vibrating feeder 4 through the return climbing belt 9 and the return chute 10 on both sides, and then enters the queuing system again.

[0038] The material vibrated by the vibrating feeder 4 is in a “flat” state without “stacking” phenomenon. The vibrating feeder 4 has a certain slope downward, and the material in the vibrating state will slide to the direction of the left queueing mechanism 1 and the right queueing mechanism 2 and then enter the left queueing mechanism 1 and the right queueing mechanism 2 evenly.

[0039] The above only illustrates the principles and specific embodiments of the present application. It should be noted that these are only examples for the skilled in the art, and various equivalent modifications can be made to these embodiments without departing from the principles and substance of the present application, which should also be considered as the protection scope of the present application.

Claims

1. A material queuing system for coal sorting, characterized in that: The system includes a queuing mechanism, a vibrating feeder (4), a feeding belt (5), a return belt (8), a return ramp belt (9), and a return guide chute (10). The return belt (8), the return ramp belt (9), and the return guide chute (10) are connected in sequence. The return guide chute (10) has a slope. One end of the feeding belt (5) is connected to the vibrating feeder (4). The queuing mechanism includes a belt, a roller (23), a sorting baffle, and a feeding port (28). The belt is driven by the roller (23). The sorting baffle is located above the belt. The return belt (8) is located on one side below the belt. The belt is supported by the frame. The queuing mechanism is provided with several belts, which are arranged in parallel and supported by a frame. The queuing mechanism also includes belt rollers and baffles: The belt pressure roller is located on the belt at a position corresponding to the sorting baffle, so that a drop is formed between the two adjacent belts; The baffle is disposed between two adjacent belts to seal the gap between the two adjacent belts. The return guide trough (10) is connected to the feeding belt (5) or the vibrating feeder (4).

2. The material queuing system for coal sorting according to claim 1, characterized in that: The queuing mechanism includes a left queuing mechanism (1) and a right queuing mechanism (2), which are arranged in parallel and have a symmetrical structure.

3. A material queuing system for coal sorting according to claim 2, characterized in that: The belts of the left queuing mechanism (1) are arranged in a manner with decreasing drop, and the belts of the right queuing mechanism (2) are arranged symmetrically with the belts of the left queuing mechanism (1). A material drop port (3) and a vibrating feeder baffle (6) are also provided between the belts of the left queuing mechanism (1) and the right queuing mechanism (2). A return belt (8) is provided below the material drop port (3).

4. A material queuing system for coal sorting according to claim 2, characterized in that: The left queuing mechanism (1) has several belts arranged in an increasing drop manner, and the right queuing mechanism (2) has several belts arranged symmetrically with the left queuing mechanism (1). The left queuing mechanism (1) and the right queuing mechanism (2) are arranged below the outermost belts respectively, and a return belt (8) is provided. A vibrating feeder baffle (6) is also provided between the left queuing mechanism (1) and the right queuing mechanism (2).

5. A material queuing system for coal sorting according to claim 3, characterized in that: Below the discharge port (3) is a return baffle (7) with a slope that is inclined toward the return conveyor belt (8).

6. A material queuing system for coal sorting according to claim 3 or 4, characterized in that: The drop formed by several belts on the left queuing mechanism (1) is equal to the drop formed by several belts on the right queuing mechanism (2).

7. A material queuing system for coal sorting according to claim 1, characterized in that: All racks are modular in design.

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