Buoyancy lifting system for underground mining of mine

Abstract

The utility model relates to the technical field of mine mining, in particular to a mine underground mining buoyancy lifting system which comprises a buoy internally bearing materials, the buoy is arranged in a haulage roadway, the end of the haulage roadway is communicated with a feeding bin, a feeding gate is arranged between the haulage roadway and the feeding bin, and the haulage roadway is communicated with the feeding bin. The top end of the feeding bin is communicated with the lifting shaft, an isolation gate is arranged between the feeding bin and the lifting shaft, the feeding bin and the lifting shaft form a vertical shaft, when materials are transported, firstly, a backflow gate is opened, a hydraulic pump is started, buoyancy liquid is pumped into the feeding bin to the bottom of a transportation roadway, the materials are placed in a buoy, and then the materials are conveyed to the bottom of the transportation roadway. The feeding gate is opened, the floating cylinder is placed in the feeding bin, the feeding gate is closed, the isolation gate is opened, buoyancy liquid continues to be pumped in, the floating cylinder enters the lifting shaft under the action of buoyancy until the floating cylinder reaches the top end of the lifting shaft, material lifting is achieved, and then the working efficiency of material transportation is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of mining technology, specifically to a buoyancy lifting system for underground mining. Background Technology

[0002] Traditional underground material transportation in mines relies heavily on railcars, belt conveyors, or vertical shaft hoists, which suffer from high energy consumption, complex equipment maintenance, and limited transportation efficiency. For example, mechanical hoisting systems depend on motor drives and wire rope traction, and long-term operation can lead to mechanical wear, a surge in energy consumption, and safety hazards. Furthermore, while existing hydraulic pumping systems can achieve continuous transportation, they are not suitable for high-density ores (such as 3t / m³). 3 The large-scale demand for upgrading (such as the annual output of super-large mines exceeding 100 Mt / a) makes it difficult to balance efficiency and economy.

[0003] Some existing solutions attempt to improve efficiency by optimizing container structure or automating control, but still have the following shortcomings: conventional lifting containers are of fixed shape (such as cubes or cylinders), resulting in low buoyancy utilization and poor matching with the shaft, which can easily lead to wasted space or increased operating resistance; existing systems have limited real-time monitoring capabilities for key parameters such as water level and material status, requiring manual intervention and making it difficult to achieve efficient continuous operation; poor scalability: the center-to-center distance of traditional segmented lifting systems is too large, resulting in low shaft utilization, and failures are easily caused by insufficient synchronization when connecting multiple segments.

[0004] To address the aforementioned issues, there is an urgent need for a buoyancy lifting system for underground mining operations. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] The buoyancy hoisting system for underground mining includes:

[0007] A buoyancy hoisting system for underground mining includes: a pontoon that carries materials internally, the pontoon being installed inside a transport roadway, the end of the transport roadway being connected to a feed bin, a feed gate being installed between the transport roadway and the feed bin, the top of the feed bin being connected to a hoisting shaft, an isolation gate being installed between the feed bin and the hoisting shaft, the feed bin and the hoisting shaft forming a vertical shaft, and the bottom of the feed bin being connected to a return bin, a return gate being installed between the return bin and the feed bin, and a hydraulic pump being installed inside the return bin.

[0008] Preferably, a monitor for monitoring the liquid level is installed inside the feed hopper at the location of the transport aisle.

[0009] Preferably, the inside of the lifting shaft is equipped with monitor one and monitor two.

[0010] Preferably, the pontoon is peach-shaped, with a pointed top and a concave bottom.

[0011] This utility model provides a buoyancy lifting system for underground mining, which has the following beneficial effects:

[0012] In this invention, during material transportation, the return gate is first opened, the hydraulic pump is started, and buoyant liquid is pumped into the feed hopper until it reaches the bottom of the transport tunnel. The material is placed inside the float, the feed gate is opened, the float is placed inside the feed hopper, the feed gate is closed, the isolation gate is opened, and buoyant liquid continues to be pumped in. Under the action of buoyancy, the float enters the hoisting shaft until it reaches the top of the hoisting shaft, thereby lifting the material and greatly improving the efficiency of material transportation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the buoyancy lifting system for underground mining in this utility model;

[0014] Figure 2 This is a schematic diagram of the buoyancy-driven segmented lifting system for underground mining in this utility model;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the pontoon in this utility model;

[0016] Figure 4 This is a schematic diagram of the planar structure of the pontoon in this utility model.

[0017] In the diagram: 10-lift shaft, 20-monitor 1, 30-monitor 2, 40-isolation gate, 50-monitor 3, 60-feed gate, 70-float, 80-return gate, 90-hydraulic pump, 100-return bin, 110-feed bin, 120-transport roadway. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Please see Figure 1-4 In this invention, a technical solution is provided:

[0022] The underground mining buoyancy hoisting system includes a float 70 that carries materials inside. The float 70 is installed inside a transport roadway 120. The end of the transport roadway 120 is connected to a feed bin 110. A feed gate 60 is installed between the transport roadway 120 and the feed bin 110. The top of the feed bin 110 is connected to a hoisting shaft 10. An isolation gate 40 is installed between the feed bin 110 and the hoisting shaft 10. The feed bin 110 and the hoisting shaft 10 form a vertical shaft. The bottom of the feed bin 110 is connected to a return bin 100. A return gate 80 is installed between the return bin 100 and the feed bin 110. A hydraulic pump 90 is installed inside the return bin 100.

[0023] In the above process, during material transportation, the return gate 80 is first opened, the hydraulic pump 90 is started, and buoyancy liquid is pumped into the feed hopper 110 until it reaches the bottom of the transport roadway 120. The material is then placed inside the float 70, the feed gate 60 is opened, the float 70 is placed inside the feed hopper 110, the feed gate 60 is closed, the isolation gate 40 is opened, and buoyancy liquid continues to be pumped in. Under the action of buoyancy, the float 70 enters the hoisting shaft 10 until it reaches the top of the hoisting shaft 10, thereby lifting the material and greatly improving the efficiency of material transportation.

[0024] Furthermore, a monitor 350 for monitoring the liquid level is installed inside the feed hopper 110 at the location of the transport roadway 120. When the liquid is lifted to the location of the transport roadway 120, the monitor 350 will automatically alarm to remind the staff, thereby realizing automated control and increasing work efficiency.

[0025] Furthermore, the inside of the lifting shaft 10 is equipped with monitor 20 and monitor 30, which are used to monitor the water level inside the lifting shaft 10 and the status of the float 70, so as to prevent the material inside the float 70 from falling and causing losses.

[0026] Furthermore, the pontoon 70 is peach-shaped, tapering at the top and concave at the bottom, with an inner radius of 1m, a height of 1.5m, and an area of ​​3.14m². 2 Volume 4.71m 3 Assume the density of the ore is 3t / m³ 3 Each barrel of ore weighs 14 tons.

[0027] In the above, the total height of the 0-section hoisting system is 50m, the buoyancy section is 35m, the feeding section is 10m, and the gate section is 5m; the shaft diameter is 2.5m, and the wellhead area is 4.91m²; the center-to-center distance of each section of the hoisting system is 30m (see...). Figure 2 Taking a well depth of 500m as an example, a 10-section flotation system can complete the full-height hoisting work. A set of 5 floats of 70 tons each (linked together with interlocking buckles) is set up, carrying 70 tons of ore, with a total height of 7.5m. The floating time for each set is temporarily set at 5 minutes (during which the second loading, pushing, pressurization, and G1 closing actions are completed). Assuming 330 days a year, 24 hours a day, 12 rounds per hour, 5 floats per set, and 14 tons per float, the annual hoisting capacity is 6.65 million tons, which can meet the needs of extra-large mine production scale (>100Mt / a is considered large).

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A buoyancy hoisting system for underground mining, characterized in that, include: The float (70) that carries the material is located inside the transport roadway (120). The end of the transport roadway (120) is connected to the feed bin (110). A feed gate (60) is provided between the transport roadway (120) and the feed bin (110). The top of the feed bin (110) is connected to the hoisting shaft (10). An isolation gate (40) is provided between the feed bin (110) and the hoisting shaft (10). The feed bin (110) and the hoisting shaft (10) form a vertical shaft. The bottom of the feed bin (110) is connected to the return bin (100). A return gate (80) is provided between the return bin (100) and the feed bin (110). A hydraulic pump (90) is provided inside the return bin (100).

2. The buoyancy lifting system for underground mining as described in claim 1, characterized in that: The feed hopper (110) is equipped with a monitor three (50) located in the transport roadway (120) for monitoring the liquid level.

3. The buoyancy lifting system for underground mining as described in claim 1, characterized in that: The inside of the lifting shaft (10) is equipped with monitor one (20) and monitor two (30).

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