Gangue transfer system

Abstract

The utility model discloses a gangue transfer system, including upper layer platform, middle layer platform and lower layer platform, be provided with mine car track on the upper layer platform, be provided with transfer gangue storehouse on the middle layer platform, and the lower layer platform is provided with main transport belt, the upper mouth of transfer gangue storehouse is located one side at mine car track, the bottom of transfer gangue storehouse is installed and is given gangue machine, and the gangue outlet of gangue machine is located above main transport belt, and the gangue outlet of gangue machine is given and is provided with buffer storehouse between main transport belt, and buffer storehouse includes the guide side plate of inclination setting, the utility model discloses a buffer storehouse can be set at the gangue machine export, can guide the gangue falling from the gangue outlet to main transport belt, and the gangue of free fall is changed for from along buffer storehouse roll down, reduce the force of gangue falling on main transport belt, prevent gangue spilling to lower layer platform, can reduce the work load of operating personnel.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine gangue transfer technology, and in particular relates to a gangue transfer system. Background Technology

[0002] Coal gangue is a solid waste generated during coal mining and washing, and it is one of the largest solid wastes emitted by mines.

[0003] Typically, mine cars transport gangue to surface transfer bins, where a feeder then moves the gangue to the main conveyor belt, transporting it to its designated location. However, during the transfer from the transfer bins to the main conveyor belt, the significant height difference between the feeder and the belt causes the gangue to bounce off the belt, resulting in some gangue spilling onto the conveyor belt platform. This requires workers to clean up the spilled gangue, and the confined space makes the cleanup even more difficult and labor-intensive. Utility Model Content

[0004] The purpose of this invention is to provide a gangue transfer system to prevent gangue from rebounding and spilling off the main conveyor belt, thereby reducing the workload of operators.

[0005] The present invention adopts the following technical solution: a gangue transfer system, comprising an upper platform, a middle platform and a lower platform; The upper platform is equipped with mine car tracks, the middle platform is equipped with transfer gangue bins, and the lower platform is equipped with main conveyor belts. The upper opening of the transfer bin is located on one side of the mine car track and is used to receive the gangue unloaded from the mine cars on the track. A waste feeder is installed at the bottom of the waste transfer bin, and the waste outlet of the waste feeder is located above the main conveyor belt; A buffer chamber is provided between the gangue outlet of the gangue feeder and the main conveyor belt. The buffer chamber includes an inclined guide side plate, which is used to guide the gangue falling from the gangue outlet onto the main conveyor belt.

[0006] The beneficial effects of this utility model are: by setting a buffer chamber at the outlet of the waste rock feeder, the waste rock falling from the outlet can be guided onto the main conveyor belt, and the free-falling waste rock is transformed into rolling down along the buffer chamber, reducing the force of the waste rock falling onto the main conveyor belt and preventing the waste rock from spilling onto the lower platform, which can reduce the workload of the operators. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of a gangue transfer system according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of a gangue transfer system according to another embodiment of the present utility model; Figure 3 This is a partial enlarged view of the buffer chamber in an embodiment of this utility model.

[0008] Among them: 10. Mine car track; 20. Transfer gangue bin; 30. Main conveyor belt; 40. Gangue feeder; 41. Small conveyor belt; 42. Coal sweeper; 50. Support; 60. Buffer bin. Detailed Implementation

[0009] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0010] This utility model discloses a gangue transfer system, including an upper platform, a middle platform, and a lower platform; such as Figure 1 and Figure 2 As shown, a mine car track 10 is provided on the upper platform, a transfer gangue bin 20 is provided on the middle platform, and a main conveyor belt 30 is provided on the lower platform. The upper opening of the transfer gangue bin 20 is located on one side of the mine car track 10 and is used to receive the gangue unloaded from the mine cars on the mine car track 10. A gangue feeder 40 is installed at the bottom of the transfer gangue bin 20, and the gangue outlet of the gangue feeder 40 is located above the main conveyor belt 30. A buffer bin 60 is provided between the gangue outlet of the gangue feeder 40 and the main conveyor belt 30. The buffer bin 60 includes an inclined guide side plate, which is used to guide the gangue falling from the gangue outlet onto the main conveyor belt 30.

[0011] This invention, by setting a buffer chamber 60 at the outlet of the waste rock feeder 40, can guide the waste rock falling from the outlet onto the main conveyor belt 30, transforming the free-falling waste rock into rolling along the buffer chamber 60, reducing the force of the waste rock falling onto the main conveyor belt 30, preventing the waste rock from spilling onto the lower platform, and reducing the workload of the operators.

[0012] By setting up an upper, middle, and lower platform to form a vertically distributed three-level functional area, the system achieves the orderly transfer of gangue from the high-level transportation unit to the low-level conveying equipment. The system utilizes the mine car track 10 to complete the initial transportation of gangue, uses the transfer gangue bin 20 for intermediate storage and centralized discharge control, and uses the gangue feeder 40 to regulate the discharge flow rate. Finally, the material is smoothly introduced into the main conveyor belt 30 via the buffer bin 60, thus completing the entire transfer process. Most importantly, the buffer bin 60, added between the gangue outlet of the gangue feeder 40 and the main conveyor belt 30, along with its inclined guide side plates, guides the trajectory and buffers the kinetic energy of the high-speed falling gangue, effectively reducing impact and improving the safety and cleanliness of the transfer process.

[0013] The upper platform, located at the highest level, is the load-bearing structure primarily used for arranging the mine car tracks 10. These tracks extend along the platform surface, accommodating the travel and designated unloading needs of conventional mine dump trucks. The mine car tracks 10 are constructed from standard steel rail components welded and fixed to the platform support beams, possessing sufficient load-bearing capacity and wear resistance to ensure no deformation or displacement occurs during frequent mine car passage. When a mine car loaded with gangue reaches a designated location, the gangue can be dumped into the upper area of ​​the transfer gangue bin 20 on the lower middle platform by tipping the car over.

[0014] The intermediate platform is located below the upper platform and above the lower platform, serving as an intermediate transition for receiving and temporarily storing gangue. The transfer gangue bin 20 is a closed or semi-closed container structure with an open top facing the unloading end of the mine car track 10 to accurately receive gangue dumped from the mine cars. The overall volume of the transfer gangue bin 20 can be designed according to actual production needs, and it typically has a certain buffer capacity to accommodate fluctuations in the time intervals between mine car arrivals and avoid instantaneous overload.

[0015] The bottom of the transfer bin 20 is equipped with a discharge port, which is connected to a waste feeder 40. The waste feeder 40 is a controllable discharge device, such as a vibrating feeder, scraper feeder, or belt feeder, used to precisely control the speed and flow rate of waste discharge, preventing downstream belt blockage or impact damage caused by a large amount of material discharged at once. The waste discharge port of the waste feeder 40 is horizontally positioned and located directly above the main conveyor belt 30 on the lower platform, allowing the waste to enter the subsequent conveying stage vertically or nearly vertically.

[0016] A buffer chamber 60 is installed between the gangue outlet of the gangue feeder 40 and the main conveyor belt 30. This component is a key structure for achieving smooth material discharge. The buffer chamber 60 has a box-shaped or funnel-shaped structure, with an inclined guide plate on one side. The guide plate extends downward from below the gangue outlet and narrows inward to form a guide channel. The inclination angle of the guide plate can be adjusted according to the actual working conditions, generally set within the range of 30° to 70°. This ensures that the gangue slides smoothly while effectively slowing down its falling speed, reducing damage caused by direct impact on the main conveyor belt 30. In addition, the guide plate also limits the material diffusion range, preventing gangue from splashing to both sides and keeping the material discharge concentrated and controllable.

[0017] As an alternative embodiment, the guide side plate can also be replaced with an arc-shaped curved surface structure to further reduce the possibility of material blockage through a smooth transition; or, a flexible baffle can be added at the outlet of the buffer bin to absorb residual kinetic energy and suppress dust.

[0018] The components are connected sequentially according to spatial logic: mine car track 10 → transfer gangue bin 20 → gangue feeder 40 → buffer bin 60 → main conveyor belt 30, forming a complete material transport link. The upper platform is responsible for input, the middle platform realizes energy storage and regulation, and the lower platform completes the final output. The three work together to give the whole system good continuity and stability.

[0019] The above technical solution achieves efficient and orderly transfer of gangue from high-level mine cars to low-level conveyor belts. Due to the installation of inclined guide plates, the gangue discharged from the gangue feeder 40 is effectively constrained in direction and its kinetic energy is attenuated before falling onto the main conveyor belt 30, significantly reducing belt wear, material splashing, and dust pollution caused by free fall. Simultaneously, the increased enclosure of the transfer path reduces the impact on the external environment, improves operational safety and automation, and fundamentally alleviates the problem of frequent manual cleaning caused by material spillage in traditional processes.

[0020] In one embodiment, a coal sweeper 42 is installed on the lower side of the small belt of the coal feeder 40; the buffer bin 60 also includes a receiving side plate, which is located below the coal sweeper 42 and is arranged opposite to the guiding side plate.

[0021] This embodiment adds a coal sweeper 42 below the small conveyor belt of the coal feeder 40, and works in conjunction with a newly added receiving side plate in the buffer bin to form an effective interception and recovery structure for spilled materials. This reduces the leakage of gangue or debris into the platform area during transfer, improving the cleanliness and safety of the system operation. The coal sweeper 42, a key cleaning component installed under the small conveyor belt of the coal feeder 40, primarily functions to remove residual gangue or materials adhering to the bottom surface of the belt, preventing them from being carried out to uncontrolled areas as the belt rotates. The coal sweeper 42 can adopt an elastic scraper structure, made of wear-resistant rubber or polyurethane material, closely adhering to the bottom surface of the small conveyor belt, continuously scraping away adhering materials during belt operation. The contact pressure between the scraper and the belt can be adjusted by adjusting the clamping mechanism to adapt to cleaning needs under different working conditions, while avoiding excessive wear on the belt surface.

[0022] As an alternative implementation, the coal sweeper 42 can also be replaced with a rotary brush cleaning device, which includes a drive motor and a roller with bristles, suitable for wet and sticky material environments, and can more effectively remove fine particulate matter.

[0023] The receiving side plate, a new functional component inside the buffer bin 60, is located directly below the coal sweeper 42 to receive the gangue or materials scraped off by the coal sweeper. This receiving side plate has an inclined plate structure, with its inclination direction facing inwards towards the buffer bin 60, facilitating the collection of materials that slide along the inclined surface into the area above the main conveyor belt 30. The receiving side plate and the guiding side plate are arranged opposite each other, forming a U-shaped or trough-shaped guiding space in their vertical projection. This ensures that materials falling from the coal sweeper 42 do not directly scatter onto the external platform but are confined within this closed path and re-enter the conveying process.

[0024] In one variant embodiment, the receiving side plate can be designed as a detachable modular structure, which is fixed to the side wall of the buffer chamber by bolts for easy maintenance and replacement later; or, its tilt angle can be adjusted in the range of 30° to 60° to adapt to gangue flows with different discharge speeds and particle sizes.

[0025] There is a clear spatial matching relationship between the coal sweeper 42 and the receiving side plate: the scraping area of ​​the coal sweeper 42 is directly opposite the effective receiving range of the receiving side plate below, ensuring that all the removed material falls onto the receiving side plate without any risk of spillage. This layout relies on precise installation; the end edge of the coal sweeper 42 should be within the projection range of the upper edge of the receiving side plate, avoiding interference and ensuring the accuracy of material discharge. In addition, although the guiding side plate and the receiving side plate belong to different parts of the buffer chamber, they complement each other through their relative arrangement. The former guides the flow of gangue in the main channel, while the latter is responsible for recovering the swept material. The synergistic effect of the two improves the sealing performance and closed-loop material management capability of the entire buffer chamber.

[0026] With the above technical solution, when the small belt of the coal feeder 40 is running, the residual coal carried at the bottom is first forcibly stripped off by the coal sweeper 42 and discharged downwards, and then falls into the receiving side plate located directly below; since the receiving side plate has an inclined guiding structure and forms an opposing enclosure with the guiding side plate, the falling material cannot splash outwards, but can only slide back into the buffer bin along the slope, and finally merge into the main conveyor belt 30 for continued transportation.

[0027] In one embodiment, both the guide side plate and the receiving side plate are connected by connecting plates. This embodiment forms an integral frame structure for the buffer bin, thereby enhancing its structural rigidity and stability. The guide side plate is an inclined metal plate that guides the gangue falling from the gangue outlet of the feeder along a predetermined path onto the main conveyor belt 30. The receiving side plate is located below the coal sweeper 42 and opposite to the guide side plate. It receives spilled materials or small gangue swept down by the coal sweeper and guides them to the main conveyor belt 30, preventing material accumulation at the bottom of the equipment. During long-term operation, the two side plates will be subjected to continuous impact, vibration, and wear. If they are only fixed at the top or bottom, lateral deformation, misalignment, or even cracking can easily occur, leading to changes in the dimensions of the guide channel, affecting material transfer efficiency, and potentially causing leakage problems.

[0028] The buffer bin 60 is connected to the lower platform via a bracket 50. Both the guide side plate and the receiving side plate have wear-resistant layers on their surfaces in contact with the gangue. This embodiment achieves stable installation of the buffer bin 60 by setting an independent support structure between the buffer bin and the lower platform, thereby improving its structural reliability under dynamic loads. This technical approach not only enhances the overall mechanical stability of the equipment but also effectively avoids problems such as loose connections and positional shifts caused by equipment vibration or material impact, ensuring the continuity and safety of the material guiding process.

[0029] Wear-resistant reinforcement treatment of the surfaces of the guide and receiving side plates in the buffer bin 60 is applied to address the continuous friction and wear caused by the falling gangue. This technique, by adding a wear-resistant layer to high-wear areas, significantly improves the service life of structural components and ensures the continuity and stability of the material transfer process.

Claims

1. A gangue transfer system, characterized in that, This includes upper-layer platforms, middle-layer platforms, and lower-layer platforms; The upper platform is equipped with a mine car track (10), the middle platform is equipped with a transfer gangue bin (20), and the lower platform is equipped with a main conveyor belt (30). The upper opening of the transfer gangue bin (20) is located on one side of the mine car track (10) and is used to receive gangue unloaded from the mine car on the mine car track (10); A waste feeder (40) is installed at the bottom of the waste transfer bin (20), and the waste outlet of the waste feeder (40) is located above the main conveyor belt (30); A buffer chamber (60) is provided between the outlet of the gangue feeder (40) and the main conveyor belt (30). The buffer chamber (60) includes an inclined guide plate, which is used to guide the gangue falling from the outlet to the main conveyor belt (30).

2. The gangue transfer system as described in claim 1, characterized in that, A coal sweeper (42) is installed on the lower side of the small belt of the coal feeder (40). The buffer chamber (60) also includes a receiving side plate, which is located below the coal sweeper (42) and is arranged opposite to the guiding side plate.

3. The gangue transfer system as described in claim 2, characterized in that, Both sides of the guide plate and the receiving plate are connected by connecting plates.

4. A gangue transfer system as described in claim 3, characterized in that, The buffer chamber (60) is connected to the lower platform via a support (50).

5. A gangue transfer system as described in any one of claims 2-4, characterized in that, Both the guide plate and the receiving plate have a wear-resistant layer on the surfaces that come into contact with the gangue.

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