Intelligent filling complete system

Abstract

This utility model belongs to the field of underground backfilling of coal mine gangue slurry, specifically relating to an intelligent backfilling system, including the following subsystems: a crushing system, a storage system, a batching system, a slurry mixing system, a pumping system, and a pipeline conveying system. All equipment in each system is connected to a PLC control system. The crushing system includes a steep-angle belt conveyor, a four-toothed roller crusher, and a scraper conveyor above the silo. The end of the steep-angle belt conveyor is connected to the inlet of the four-toothed roller crusher, and the outlet of the four-toothed roller crusher is connected to the starting end of the scraper conveyor above the silo. This utility model has a wide range of applications, suitable for mines with insufficient construction budgets to afford the construction of gangue buffer silos, and also suitable for mines with sufficient construction budgets but poor geological conditions and lack of stratigraphic relationships at the working face, making it impossible to construct large-capacity gangue silos.

Description

Technical Field

[0001] This utility model belongs to the field of underground backfilling of coal mine gangue slurry, and specifically relates to an intelligent backfilling system. Background Technology

[0002] The large-scale production and utilization of coal resources generates a large amount of solid waste such as coal gangue. Preliminary estimates indicate that gangue production is approximately 200-300 million tons per year. Large-scale gangue piles can pollute water sources, spontaneously combust, and occupy land. The technical approach of slurry backfilling technology involves crushing the gangue and other solid waste into tiny particles, then using water as a carrier, pipelines as channels, and pumps as power to efficiently migrate these particles to the residual space after mining collapses. This achieves efficient treatment of gangue solid waste and effective prevention and control of geological hazards.

[0003] However, existing underground grouting and filling technologies have the following problems: large initial investment, complex system processes, high energy consumption during equipment operation, large personnel input, large equipment space occupation, high mine construction difficulty, and high mine construction costs. For small and medium-sized coal mines, which account for about 15%, most of these mines cannot afford the high mine construction costs, and some mines do not even have suitable geological conditions to build a continuous gangue bin to meet the needs of underground grouting and filling systems. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent filling system. It addresses the problems of conventional systems, such as complex structure, high personnel requirements, large equipment footprint, high construction difficulty, and high construction costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution. An intelligent filling system includes the following subsystems: a crushing system, a storage system, a batching system, a slurry mixing system, a pumping system, and a pipeline conveying system. The equipment in each system is connected to a PLC control system. The crushing system includes a steep-angle belt conveyor, a four-toothed roller crusher, and a silo scraper conveyor. The end of the steep-angle belt conveyor is connected to the inlet of the four-toothed roller crusher, and the outlet of the four-toothed roller crusher is connected to the starting end of the silo scraper conveyor.

[0006] Furthermore, the storage system includes a horizontal cache bin, which is formed by connecting multiple gangue cache bins. The end of the scraper conveyor on the bin is located above the horizontal cache bin, and a gate is provided at the bottom of the horizontal cache bin.

[0007] Furthermore, the batching system includes a gangue batching component and a water supply batching component. The gangue batching component includes an under-silo belt conveyor and a weighing feeder. The water supply batching component includes a water supply pipeline and an electromagnetic flow meter and a flow regulating valve installed on it. The starting end of the under-silo belt conveyor is located below the bottom gate of the horizontal buffer silo, and the end of the under-silo belt conveyor is connected to the weighing feeder.

[0008] Furthermore, the pulping and mixing system includes a ball mill and a slurry storage tank. The end of the under-bin belt conveyor connected to the weighing feeder and the water feeding and batching components are both connected to the inlet of the ball mill, and the outlet of the ball mill leads to the slurry storage tank.

[0009] Furthermore, the pumping system includes a slurry pump, a slurry storage and mixing tank, and a mining grouting pump. The pipeline transportation system includes a slurry transportation pipeline. The slurry storage tank is connected to the slurry storage and mixing tank, and a slurry pump is installed therein to transfer qualified slurry from the slurry storage tank to the slurry storage and mixing tank. The pipeline transportation system is connected after the slurry storage and mixing tank, and a mining grouting pump is installed therein to transfer the slurry from the slurry storage and mixing tank to the slurry transportation pipeline.

[0010] Furthermore, the water supply pipeline in the water supply and batching assembly has two branches, one branch is connected to the ball mill inlet, and the other branch is connected to the slurry storage and mixing tank for flushing the slurry conveying pipeline.

[0011] Furthermore, a water pump is installed at the starting position of the water supply pipeline.

[0012] Furthermore, pressure relief valves and pressure sensors are evenly installed on the slurry delivery pipeline.

[0013] The beneficial technical effects of this utility model are as follows: This invention has a wide range of applications. It is suitable for mines with insufficient construction budgets that cannot afford to build gangue buffer silos, as well as mines with sufficient construction budgets but poor geological conditions and no stratigraphic relationship at the mining face that prevents the construction of large-capacity gangue silos.

[0014] This invention features miniaturization, replacing high-section gangue silos with horizontal ones, reducing the overall height and width of the equipment. The ball mill serves as the pulping device, simplifying the crushing and pulping process. It is modular, with the horizontal buffer silos composed of multiple individual silos, each a separate buffer module. As the amount of material to be buffered increases, the number of gangue buffer silos can be increased horizontally to expand the volume. It is energy-efficient, using fewer pieces of equipment and consuming less energy. It is intelligent, enabling one-button start / stop, human-machine monitoring, data visualization, production line monitoring, screen configuration, alarms, and archiving functions, providing data support for intelligent decision-making. Attached Figure Description

[0015] Figure 1 This is a layout diagram of an intelligent filling system.

[0016] In the attached diagram, 1. Inclined belt conveyor, 2. Four-toothed roller crusher, 3. Above-slot scraper conveyor, 4. Horizontal buffer silo, 5. Below-slot belt conveyor, 6. Weighing feeder, 7. Ball mill, 8. Slurry pump, 9. Slurry storage and mixing tank, 10. Mining grouting pump. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0018] An intelligent filling system includes the following subsystems: a crushing system, a storage system, a batching system, a slurry mixing system, a pumping system, a pipeline conveying system, and a control system.

[0019] Example: like Figure 1 As shown, the crushing system includes a steep-angle belt conveyor 1, a four-toothed roller crusher 2, and a scraper conveyor 3 above the bin. The steep-angle belt conveyor 1 transfers gangue particles with a size of 10-100mm to the four-toothed roller crusher 2, where they are crushed to particles smaller than 10mm. The gangue particles smaller than 10mm are then transferred by the scraper conveyor 3 to the buffer system. The buffer system includes a horizontal buffer bin 4, which consists of multiple individual bins, each a separate buffer module. When the amount of material requiring buffering increases, the number of gangue buffer bins is increased horizontally to increase the volume. The gangue buffer bins have one-button loading and unloading functions. The batching system includes a gangue batching component and a water supply batching component. The gangue batching component includes an under-silo belt conveyor 5 and a weighing feeder 6. The water supply batching component includes a water supply pipeline and an electromagnetic flow meter and a flow regulating valve installed on it. The slurry mixing system includes a ball mill 7 and a slurry storage tank. The pumping system includes a slurry pump 8, a slurry storage and mixing tank 9, and a mining grouting pump 10. The pipeline conveying system includes a wear-resistant seamless steel pipe, on which pressure sensors, quick-connect flanges, and gate valves are installed.

[0020] In this embodiment, the ball mill 7 in the pulping and mixing system is a center-driven wet ball mill used to crush and grind gangue particles smaller than 10mm into qualified slurry. The equipment is arranged in an "L" shape, with an overall length of 57 meters, a width of 3 meters, and a height of 4.5 meters. The control system is controlled by a PLC control cabinet, realizing one-button start / stop, data monitoring, and PID batching functions. Ladder diagrams + SCL are used, employing object-oriented programming methods, and an IoT gateway module is added to collect relevant equipment signals via a bus-type approach. All the above-mentioned equipment are interconnected through chutes.

[0021] This invention provides a new grouting and filling method for the underground non-surface treatment of bottom gangue, tunneling gangue, and pre-discharge gangue, characterized by simple process, low maintenance cost, low mine construction cost, low energy consumption, and low personnel cost. Gangue smaller than 100mm is transported to a four-toothed roller crusher 2 via a simple belt conveyor, where it is crushed to less than 10mm. It is then transported to a horizontal buffer bin 4 via a scraper conveyor. The gangue and water are quantitatively fed into a centrally driven wet ball mill 7 via a batching system. The qualified slurry produced by the ball mill 7 is transported to a slurry storage and mixing tank 9 via a slurry pump. Finally, it is pumped into a pipeline transportation system by a mine grouting pump 10, and the slurry is transported to the goaf.

[0022] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. All equivalent structural changes made based on the description and drawings of the present invention should be included within the scope of patent protection of the invention.

Claims

1. An intelligent filling system, characterized in that, The system includes the following subsystems: crushing system, storage system, batching system, slurry mixing system, pumping system and pipeline conveying system. The equipment in each system is connected to the PLC control system. The crushing system includes a steep-angle belt conveyor (1), a four-tooth roller crusher (2) and a bin scraper conveyor (3). The end of the steep-angle belt conveyor (1) is connected to the inlet of the four-tooth roller crusher (2), and the outlet of the four-tooth roller crusher (2) is connected to the starting end of the bin scraper conveyor (3).

2. The intelligent filling system according to claim 1, characterized in that: The storage system includes a horizontal cache bin (4), which is formed by connecting multiple gangue cache bins. The end of the scraper conveyor (3) is located above the horizontal cache bin (4), and a gate is provided at the bottom of the horizontal cache bin (4).

3. The intelligent filling system according to claim 2, characterized in that: The batching system includes a gangue batching component and a water supply batching component. The gangue batching component includes an under-silo belt conveyor (5) and a weighing feeder (6). The water supply batching component includes a water supply pipeline and an electromagnetic flow meter and a flow regulating valve installed on it. The starting end of the under-silo belt conveyor (5) is located below the bottom gate of the horizontal buffer silo (4), and the end of the under-silo belt conveyor (5) is connected to the weighing feeder (6).

4. The intelligent filling system according to claim 3, characterized in that: The pulping and mixing system includes a ball mill (7) and a slurry storage tank. The end of the under-sink belt conveyor (5) connected to the weighing feeder (6) and the water feeding and batching components are both connected to the inlet of the ball mill (7). The outlet of the ball mill (7) leads to the slurry storage tank.

5. The intelligent filling system according to claim 4, characterized in that: The pumping system includes a slurry pump (8), a slurry storage and mixing tank (9), and a mining grouting pump (10). The pipeline transportation system includes a slurry transportation pipeline. The slurry storage tank is connected to the slurry storage and mixing tank (9). The slurry pump (8) is installed in the slurry storage tank to transfer qualified slurry in the slurry storage and mixing tank (9). The pipeline transportation system is connected to the slurry storage and mixing tank (9). The mining grouting pump (10) is installed in the slurry storage and mixing tank (9) to transfer the slurry in the slurry transportation pipeline.

6. The intelligent filling system according to claim 5, characterized in that: The water supply and batching assembly has two branches in its water delivery pipeline. One branch is connected to the inlet of the ball mill (7), and the other branch is connected to the slurry storage and mixing tank (9) for flushing the slurry delivery pipeline.

7. The intelligent filling system according to claim 6, characterized in that: A water pump is installed at the beginning of the water pipeline.

8. The intelligent filling system according to claim 7, characterized in that: Pressure relief valves and pressure sensors are evenly installed on the slurry delivery pipeline.

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