Rotary screening type coal gangue separation device

Abstract

The utility model discloses a rotary screening type coal gangue separating device which comprises a support table, a belt conveyor is arranged in the support table in a penetrating mode, two vertical plates are fixedly arranged on the upper end face of the support table, a separating cylinder is rotationally arranged between the two vertical plates, and a driving mechanism is fixedly arranged at the upper end of the support table. Through holes communicated with an inner cavity of the separation barrel are formed in the rotating shafts at the left end and the right end of the separation barrel, a cross beam penetrating through the through holes to extend into the separation barrel is fixedly arranged on the upper end face of the support table, a spring telescopic assembly is fixedly arranged at the bottom of the cross beam, and a crushing roller is fixedly and rotationally arranged at the lower end of the spring telescopic assembly. An area for extruding the coal gangue is formed between the crushing roller and the inner wall of the separation barrel, the crushing roller and the crushing protrusions can effectively promote coal briquettes to fall off from the coal gangue, the overall coal mining efficiency is improved, the spring telescopic assembly enables the crushing roller to have flexibility, the crushing roller can move upwards when encountering large coal gangue, the situation that the coal gangue is crushed due to too large extrusion force is avoided, and impurities are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of coal gangue separation devices, specifically a rotary screening coal gangue separation device. Background Technology

[0002] In coal mining, gangue separation is a crucial step, aiming to effectively separate softer coal particles from the gangue, which is vital for improving mining efficiency. Traditional gangue separation equipment mostly uses drum screening. This method primarily utilizes the differences in size and shape between coal and gangue; the rotation of the drum causes the material to tumble inside, and smaller coal particles fall through the screen holes on the drum, achieving separation.

[0003] However, traditional coal gangue separation equipment has significant drawbacks. Firstly, it lacks a dedicated crushing mechanism for removing coal chunks from the gangue, relying solely on the collision of materials within the drum to dislodge them. This method is inefficient, often leaving a large amount of coal chunks attached to the gangue. Secondly, some equipment, in an effort to improve coal chunk removal efficiency, directly adds a crusher for indiscriminate crushing of the material. However, this crushes the gangue itself along with the coal chunks, resulting in a higher impurity content in the final coal, affecting its quality and hindering subsequent coal processing and utilization. Therefore, a new type of coal gangue separation device is needed to overcome these problems. Utility Model Content

[0004] (I) Technical Issues

[0005] The purpose of this invention is to design a rotary screening coal gangue separation device to overcome the shortcomings of traditional coal gangue separation equipment. By equipping the separation cylinder with a crushing roller with crushing protrusions and a spring telescopic assembly, the device efficiently crushes coal blocks on the coal gangue, avoiding indiscriminate crushing of the gangue body, thereby improving coal mining efficiency and coal quality, and optimizing the coal gangue separation effect.

[0006] (II) Technical Content

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a rotary screening coal gangue separation device, including a support platform, a belt conveyor passing through the inside of the support platform, two vertical plates fixedly mounted on the upper surface of the support platform, a separation cylinder rotatably mounted between the two vertical plates, a plurality of evenly distributed filter holes for coal particles to pass through on the side of the separation cylinder, a drive mechanism for driving the separation cylinder to rotate fixedly mounted on the upper surface of the support platform, through holes communicating with the inner cavity of the separation cylinder in the rotating shafts at both ends of the separation cylinder, a crossbeam extending into the separation cylinder through the through holes fixedly mounted on the upper surface of the support platform, a spring telescopic assembly fixedly mounted at the bottom of the crossbeam, and a crushing roller fixedly mounted rotatably mounted at the lower end of the spring telescopic assembly.

[0008] Furthermore, the spring telescopic assembly includes telescopic cavities fixedly disposed at the left and right ends of the bottom of the crossbeam, and also includes a U-shaped rod inserted into the telescopic cavity. The two ends of the U-shaped rod are respectively inserted into the telescopic cavity and fixedly provided with limiting plates. A spring is provided between the limiting plates and the top surface inside the telescopic cavity, and the crushing roller is rotatably disposed on the U-shaped rod.

[0009] Furthermore, the drive mechanism includes a motor fixedly mounted on the upper end of the support platform, a pulley one fixedly mounted on the drive shaft of the motor, and a pulley two fixedly mounted on the rotating shaft at one end of the separator cylinder, with a belt connecting the pulley one and the pulley two.

[0010] Furthermore, the separation cylinder has a feed inlet at one end and a discharge outlet for discharging coal gangue on its circumferential side, with a sealing plate hinged inside the discharge outlet.

[0011] Furthermore, the surface of the crushing roller is fixedly provided with several evenly distributed crushing protrusions.

[0012] (III) Technical Effects

[0013] The advantages of this utility model compared with the prior art are:

[0014] 1. Improved separation efficiency: During the rotation of the separation cylinder, the crushing roller and the inner wall of the separation cylinder form a region for squeezing coal gangue. The crushing roller and crushing protrusions can effectively promote the coal blocks to fall off the gangue. Compared with the traditional separation method that relies on collision, it greatly improves the separation efficiency of coal gangue, thereby improving the overall efficiency of coal mining.

[0015] 2. Reduce impurities: The spring telescopic assembly gives the crushing roller flexibility, allowing it to move upwards when encountering larger coal gangue, preventing the gangue from being crushed due to excessive extrusion pressure. This reduces the generation of impurities, avoids damage to the equipment due to overload, and ensures stable operation of the equipment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a rotary screening coal gangue separation device according to this utility model. Figure 1 .

[0017] Figure 2 This is a three-dimensional structural diagram of a rotary screening coal gangue separation device according to this utility model. Figure 2 .

[0018] Figure 3 This is a three-dimensional structural diagram of a rotary screening coal gangue separation device according to this utility model. Figure 3 .

[0019] Figure 4 This is a schematic diagram of the main structure of a rotary screening coal gangue separation device according to this utility model.

[0020] Figure 5 This is a left-side structural schematic diagram of a rotary screening coal gangue separation device according to this utility model.

[0021] Figure 6 This is a top view schematic diagram of a rotary screening coal gangue separation device according to this utility model.

[0022] Figure 7 This is a schematic diagram of the cross-sectional structure of a rotary screening coal gangue separation device according to this utility model.

[0023] Figure 8 This is a schematic diagram of the spring telescopic component of a rotary screening coal gangue separation device according to this utility model.

[0024] As shown in the figure: 1. Support platform; 2. Belt conveyor; 3. Vertical plate; 4. Separation cylinder; 5. Through hole; 6. Crossbeam; 7. Spring telescopic assembly; 8. Crushing roller; 9. Telescopic cavity; 10. U-shaped rod; 11. Limiting plate; 12. Spring; 13. Motor; 14. Belt pulley one; 15. Belt pulley two; 16. Belt; 17. Feed inlet; 18. Discharge outlet; 19. Sealing plate; 20. Crushing protrusion; 21. Filter hole. Detailed Implementation

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation structure and operation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] Combined with appendix Figure 1 To be continued Figure 8A rotary screening coal gangue separation device includes a support platform 1, a belt conveyor 2 passing through the inside of the support platform 1, two vertical plates 3 fixedly mounted on the upper surface of the support platform 1, a separation cylinder 4 rotatably mounted between the two vertical plates 3, a plurality of evenly distributed filter holes 21 for coal particles to pass through on the side of the separation cylinder 4, a feed inlet 17 at one end of the separation cylinder 4, a discharge outlet 18 for coal gangue to be discharged on the circumferential side of the separation cylinder 4, a sealing plate 19 hinged inside the discharge outlet 18, a drive mechanism for driving the separation cylinder 4 to rotate fixedly mounted on the upper end of the support platform 1, through holes 5 in the rotating shafts at both ends of the separation cylinder 4 communicating with the inner cavity of the separation cylinder 4, a crossbeam 6 extending through the through holes 5 and into the interior of the separation cylinder 4 fixedly mounted on the upper surface of the support platform 1, a spring telescopic assembly 7 fixedly mounted at the bottom of the crossbeam 6, a crushing roller 8 fixedly mounted rotatably mounted at the lower end of the spring telescopic assembly 7, and a plurality of evenly distributed crushing protrusions 20 fixedly mounted on the surface of the crushing roller 8.

[0029] In this embodiment, as a preferred technical solution, the spring telescopic assembly 7 includes telescopic cavities 9 fixedly disposed at the left and right ends of the bottom of the crossbeam 6, and also includes a U-shaped rod 10 inserted into the telescopic cavity 9. The two ends of the U-shaped rod 10 are respectively inserted into the telescopic cavity 9 and fixedly provided with a limiting plate 11. A spring 12 is provided between the limiting plate 11 and the top surface inside the telescopic cavity 9. The crushing roller 8 is rotatably disposed on the U-shaped rod 10.

[0030] In this embodiment, as a preferred technical solution, the driving mechanism includes a motor 13 fixedly mounted on the upper end of the support platform 1, a pulley 14 fixedly mounted on the drive shaft of the motor 13, and a pulley 15 fixedly mounted on the rotating shaft at one end of the separating cylinder 4. A belt 16 is connected between the pulley 14 and the pulley 15.

[0031] The working process of this rotary screening coal gangue separation device is as follows:

[0032] 1. Coal gangue enters the separator 4 through the feed inlet 17. The feed inlet 17 is then closed, and the sealing plate 19 of the discharge outlet 18 is closed. The motor 13 starts, and its drive shaft pulley 14 drives pulley 15 via belt 16, causing the separator 4 to rotate between the two vertical plates 3. The separator 4 has several filter holes 21 on its side. During rotation, the coal gangue collides with each other, detaching the coal layer from the surface of the gangue. Coal particles smaller than the filter holes 21 fall through the filter holes 21 under gravity, achieving initial separation.

[0033] 2. Simultaneously, a crossbeam 6 passes through the through holes 5 in the rotating shafts at both ends of the separating cylinder 4. The spring telescopic assembly 7 at the bottom of the crossbeam 6 is connected to the crushing roller 8. When coal gangue tumbles inside the separating cylinder 4, the crushing roller 8 contacts the coal gangue under the action of the spring telescopic assembly 7. The spring telescopic assembly 7 includes telescopic cavities 9 fixed at the bottom left and right ends of the crossbeam 6. A U-shaped rod 10 is inserted into the telescopic cavity 9. A spring 12 is provided between the limiting plates 11 at both ends of the U-shaped rod 10 and the top surface inside the telescopic cavity 9. This structure allows the crushing roller 8 to be flexibly adjusted when encountering coal gangue of different sizes and hardness. When encountering larger coal gangue, the crushing roller 8 can move upwards within the telescopic cavity 9 via the U-shaped rod 10 to avoid excessive squeezing force that crushes the gangue. During the contact process between the crushing roller 8 and the coal gangue, the crushing protrusions 20 on the surface of the crushing roller 8 will crush the coal lumps attached to the coal gangue, making it easier for the softer coal lumps to fall off the gangue. The fallen coal particles fall through the filter holes 21 and onto the belt conveyor 2, and are transported to the coal car.

[0034] 3. After the coal gangue is separated, rotate the discharge port 18 of the separation cylinder 4 to face downwards and open the sealing plate 19 to discharge the coal gangue residue. The residue falls onto the belt conveyor 2, and the dump truck is responsible for receiving the residue and transporting it away.

[0035] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A rotary screening coal gangue separation device, comprising a support platform (1), wherein a belt conveyor (2) passes through the inside of the support platform (1), characterized in that: Two vertical plates (3) are fixedly provided on the upper end face of the support platform (1). A separation cylinder (4) is rotatably provided between the two vertical plates (3). Several evenly distributed filter holes (21) for coal particles to pass through are provided on the side of the separation cylinder (4). A drive mechanism for driving the separation cylinder (4) to rotate is fixedly provided on the upper end of the support platform (1). Through holes (5) connecting the inner cavity of the separation cylinder (4) are provided in the rotating shafts at both ends of the left and right ends of the separation cylinder (4). A crossbeam (6) is fixedly provided on the upper end face of the support platform (1) and extends into the interior of the separation cylinder (4) through the through holes (5). A spring telescopic assembly (7) is fixedly provided at the bottom of the crossbeam (6). A crushing roller (8) is fixedly rotatably provided at the lower end of the spring telescopic assembly (7).

2. The rotary screening coal gangue separation device according to claim 1, characterized in that: The spring telescopic assembly (7) includes telescopic cavities (9) fixedly disposed at the left and right ends of the bottom of the crossbeam (6), and also includes a U-shaped rod (10) inserted into the telescopic cavity (9). The two ends of the U-shaped rod (10) are respectively inserted into the telescopic cavity (9) and fixedly provided with a limiting plate (11). A spring (12) is provided between the limiting plate (11) and the top surface inside the telescopic cavity (9). The crushing roller (8) is rotatably disposed on the U-shaped rod (10).

3. The rotary screening coal gangue separation device according to claim 1, characterized in that: The driving mechanism includes a motor (13) fixedly mounted on the upper end of the support platform (1), a pulley (14) fixedly mounted on the drive shaft of the motor (13), and a pulley (15) fixedly mounted on the shaft at one end of the separator (4). A belt (16) is connected between the pulley (14) and the pulley (15).

4. The rotary screening coal gangue separation device according to claim 1, characterized in that: The separation cylinder (4) has a feed inlet (17) at one end and a discharge port (18) for discharging coal gangue on the circumferential side of the separation cylinder (4). A sealing plate (19) is hinged inside the discharge port (18).

5. A rotary screening coal gangue separation device according to claim 1, characterized in that: The crushing roller (8) has several evenly distributed crushing protrusions (20) fixed on its surface.

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