A coal-water transfer device with dual water tank feeding system

Abstract

This utility model relates to the field of coal mining equipment technology, specifically to a coal-water transfer device with a dual-tank feeding system. It includes a base on which a crushing module and a transfer module are mounted. The transfer module creates a stable feeding method at the feed end of the mineral processing equipment, improving feeding stability while reducing equipment wear caused by unstable material flow. The anti-clogging module includes a transmission rod extending below the conveying pump. A mounting block is located below the transmission rod, and hammer blocks are mounted on the side wall of the mounting block. Multiple hammer blocks are evenly distributed along the circumference of the mounting block, with a gap between adjacent hammer blocks to facilitate disturbance of material settled at the bottom. The width of the hammer blocks gradually increases from bottom to top, and both sides of the hammer blocks have helical surfaces. These helical surfaces can form a layered vortex at the feed end of the conveying pump, increasing material throughput and improving conveying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of coal mine equipment technology, specifically to a coal-water transfer and feeding device with a dual water tank. Background Technology

[0002] Currently, most existing coal-water transfer and feeding devices adopt a single water tank structure combined with a single conveying pump. This model reveals several unavoidable drawbacks in practical applications. Firstly, poor feeding stability is the most prominent problem: when the upstream raw coal delivery volume fluctuates or the coal-water mixture concentration changes, the liquid level in the single water tank rises and falls rapidly, causing instability in the feed pressure of the subsequent conveying pump, which in turn leads to drastic fluctuations in material flow. These fluctuations, transmitted to mineral processing equipment (such as flotation machines and heavy medium cyclones), directly disrupt the stable working environment inside the equipment. For example, in a flotation machine, a sudden increase in flow can easily cause slurry overflow, while a sudden decrease in flow will cause the equipment to "idle," not only reducing mineral processing efficiency and clean coal recovery rate but also causing significant fluctuations in product quality.

[0003] Secondly, the problem of severe equipment wear and tear is particularly prominent. Mineral processing equipment is designed and operated based on stable feed parameters. When material flow fluctuates frequently, core components inside the equipment (such as impellers, liners, and feed valves) will be subjected to alternating loads and impact stresses. For example, when the flow rate suddenly increases, the feed inlet components will be subjected to high-intensity material erosion, accelerating wear; when the flow rate suddenly decreases, localized vacuum or dry friction can easily form inside the equipment, leading to overheating and deformation of components. Prolonged operation under such unstable conditions will significantly shorten the maintenance cycle of the mineral processing equipment and significantly increase the frequency of spare parts replacement. This not only increases equipment operation and maintenance costs but also reduces the effective operating time of the production line due to frequent downtime for maintenance, thus hindering overall production efficiency.

[0004] To improve material supply stability, some companies have attempted to intervene by manually adjusting valve openings or replacing pumps with different power ratings. However, this approach has significant limitations: manual adjustment is slow to respond and cannot match the dynamic changes in the coal-water mixture in real time, resulting in low adjustment accuracy. Frequent pump replacements increase equipment investment costs and are cumbersome to operate, making them unsuitable for continuous production. Other technical solutions employ a combination of a single water tank and a level sensor, controlling the pump's start and stop via sensor signals. However, this solution only achieves simple level-based start / stop control and cannot address the issue of gradual flow changes during level fluctuations, thus failing to establish a stable material supply flow and offering limited improvement in supply accuracy and stability.

[0005] Furthermore, the existing feeding device has poor material adaptability. When the solid particle content in the coal-water mixture increases or large impurities appear, it easily leads to blockage of the feed pipeline, further increasing the risk of feed interruption. Cleaning after blockage requires machine shutdown, which not only prolongs production downtime but also increases the workload of operators. Utility Model Content

[0006] To address the aforementioned issues, this utility model provides a coal-water transfer device with a dual-tank feeding system. By utilizing a transfer module, a stable feeding method is established at the feed end of the mineral processing equipment, thereby improving feeding stability and reducing equipment wear caused by unstable material flow.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a coal-water transfer device with a dual-tank feeding system, comprising a base, on which a crushing module and a transfer module are provided. The crushing module includes a crusher, and the output end of the crusher is provided with a discharge pipe connected to the transfer module. The transfer module includes a filter tank, a conveying tank, and a connecting pipe. A filter screen is provided in the filter tank, and a conveying pump is provided in the conveying tank.

[0008] As a further improvement to the above technical solution: The filter tank has an inlet at the top and an outlet at the bottom, with the filter screen located between the inlet and the outlet.

[0009] The inlet and outlet are located at opposite ends of the filter tank, and the filter screen is inclined and located at the lower end outside the outlet.

[0010] The feed end of the conveying pump is equipped with an anti-clogging module, and the discharge end of the conveying pump is equipped with a feeding pipe, the upper end of which extends to the top of the conveying water tank.

[0011] The anti-clogging module includes a transmission rod extending below the delivery pump, a mounting block is provided below the transmission rod, and a hammer block is provided on the side wall of the mounting block.

[0012] The number of hammering blocks is multiple and they are evenly distributed along the circumference of the mounting block, with a gap reserved between two adjacent hammering blocks.

[0013] The width of the hammer block gradually increases from bottom to top, and both sides of the hammer block are provided with helical curved surfaces.

[0014] The filter tank and the conveying tank are located on opposite sides of the crusher.

[0015] The crusher is equipped with a flow stabilizer at the feed end. The lower end of the flow stabilizer is connected to the feed inlet of the crusher, and the upper end is provided with a pressure relief port. A feed pipe is provided on the side wall of the flow stabilizer.

[0016] The beneficial effects of this utility model embodiment are as follows: the coal-water conversion double water tank feeding device includes a base, on which a crushing module and a transfer module are provided. The transfer module is used to form a stable feeding method at the feeding end of the mineral processing equipment, which improves the feeding stability and reduces equipment wear caused by unstable material flow. The anti-clogging module includes a transmission rod extending below the conveying pump. A mounting block is located below the transmission rod, and hammer blocks are installed on the side wall of the mounting block. There are multiple hammer blocks, which are evenly distributed along the circumference of the mounting block. A gap is reserved between two adjacent hammer blocks to facilitate the disturbance of materials that have settled at the bottom. The width of the hammer blocks gradually increases from bottom to top. Both sides of the hammer blocks are provided with helical curved surfaces. The helical curved surfaces can form a layered vortex at the feed end of the conveying pump, which can increase the material passing speed and improve the conveying efficiency. A flow stabilizer box is added to the feed end of the crusher. The lower end of the flow stabilizer box is connected to the feed port of the crusher, and the upper end of the flow stabilizer box is provided with a pressure relief port. A feed pipe is installed on the side wall of the flow stabilizer box. The material entering the crusher is first temporarily stored in the flow stabilizer box and then enters the crusher. This forms a stable feed flow at the feed end of the entire equipment. This is coordinated with the transfer module to form a stable flow at the discharge end of the entire equipment. Stable flow is formed at both the feed and discharge ends of the equipment to ensure stable operation of the equipment, reduce wear caused by changes in excess material flow, and thus extend the service life of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of Example 1; Figure 2 This is a top view of Example 1; Figure 3 This is a schematic diagram of the delivery pump in Example 1; Figure 4 for Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the structure of the water filter tank in Example 1; Figure 6 This is a schematic diagram of the overall structure of Example 2; Figure 7 This is a schematic diagram of the current stabilizing box in Example 2.

[0018] In the diagram: 1. Base; 2. Crusher; 3. Discharge pipe; 4. Filter water tank; 5. Conveying water tank; 6. Connecting pipe; 7. Filter screen; 8. Conveying pump; 9. Feed inlet; 10. Discharge outlet; 11. Feeding pipe; 12. Transmission rod; 13. Mounting block; 14. Hammering block; 15. Helical curved surface; 16. Flow stabilizer box; 17. Pressure relief port; 18. Feeding pipe. Detailed Implementation

[0019] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] Example 1 like Figure 1-5 As shown, the coal-water transfer device of this embodiment uses a dual-tank feeding device, including a base 1. A crushing module and a transfer module are installed on the base 1. The crushing module includes a crusher 2. The output end of the crusher 2 is provided with a discharge pipe 3 that is connected to the transfer module. The transfer module includes a filter water tank 4, a conveying water tank 5 and a connecting pipe 6. A filter screen 7 is installed in the filter water tank 4 and a conveying pump 8 is installed in the conveying water tank 5. The filter water tank 4 and the conveying water tank 5 are located on both sides of the crusher 2, which can reduce the size of the equipment, form a compact layout, and thus reduce the space occupied by the overall equipment.

[0021] The filter tank 4 has an inlet 9 at the top and an outlet 10 at the bottom. The filter screen 7 is located between the inlet 9 and the outlet 10. The inlet 9 and the outlet 10 are located at opposite ends of the filter tank 4. The filter screen 7 is inclined and located at the bottom and outside the outlet 10. The filter screen 7, the bottom and the side wall of the filter tank 4 form an isolation chamber that surrounds the outlet 10. After screening and intercepting the material output from the crusher 1, the qualified material enters the conveying tank 5 along the connecting pipe 6 under the suction of the conveying pump 8. While screening the material, the filter tank 4 can also form a transfer chamber using the material it stores, avoiding adverse phenomena such as knocking caused by unstable feed flow of the conveying pump 8, and improving the stability of operation.

[0022] The feed end of the conveying pump 8 is equipped with an anti-clogging module, and the discharge end of the conveying pump 8 is equipped with a feeding pipe 11. The upper end of the feeding pipe 11 extends to the top of the conveying water tank 5. The feed end of the conveying pump 8 is far away from the feed end of the conveying water tank 5. This can form a secondary buffer after the material enters the conveying water tank 5, further improving the stability of material conveying.

[0023] The anti-clogging module includes a transmission rod 12 extending below the conveying pump 8. A mounting block 13 is provided below the transmission rod 12. Hammering blocks 14 are provided on the side wall of the mounting block 13. There are multiple hammering blocks 14, which are evenly distributed along the circumference of the mounting block 13. A gap is reserved between two adjacent hammering blocks 14 to facilitate the disturbance of materials that have settled at the bottom. The width of the hammering blocks 14 gradually increases from bottom to top. Both sides of the hammering blocks 14 are provided with spiral curved surfaces 15. The spiral curved surfaces 15 can form a layered vortex at the feed end of the conveying pump 8, thereby increasing the material passing speed and improving the conveying efficiency.

[0024] Example 2 The similarities with Example 1 will not be repeated here; the differences are as follows: Figure 6-7 As shown: A flow stabilizing box 16 is added to the feed end of the crusher 2. The lower end of the flow stabilizing box 16 is connected to the feed port of the crusher 2, and a pressure relief port is opened at the upper end of the flow stabilizing box 16. A feed pipe 18 is set on the side wall of the flow stabilizing box. The material entering the crusher 2 is first temporarily stored through the flow stabilizing box 16 and then enters the crusher 2, forming a stable feed flow at the feed end of the entire equipment. This works in conjunction with the transfer module to form a stable flow at the discharge end of the entire equipment, forming a stable flow at both the feed and discharge ends of the equipment. This ensures the stable operation of the equipment, reduces the wear and tear on the equipment caused by changes in the flow of excess material, and thus extends the service life of the equipment.

[0025] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0028] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A coal-water transfer device with a dual-tank feeding system, comprising a base (1), characterized in that: The base (1) is provided with a crushing module and a transfer module. The crushing module includes a crusher (2). The output end of the crusher (2) is provided with a discharge pipe (3) that is connected to the transfer module. The transfer module includes a filter tank (4), a transport tank (5), and a connecting pipe (6). The filter tank (4) is equipped with a filter screen (7), and the transport tank (5) is equipped with a transport pump (8).

2. The coal-water transfer and dual-tank feeding device according to claim 1, characterized in that: The filter tank (4) is provided with an inlet (9) at the top and an outlet (10) at the bottom, and the filter screen (7) is located between the inlet (9) and the outlet (10).

3. The coal-water transfer and dual-tank feeding device according to claim 2, characterized in that: The feed inlet (9) and the discharge outlet (10) are located at the two ends of the filter tank (4), and the filter screen (7) is inclined and located at the lower end and outside the discharge outlet (10).

4. The coal-water transfer and dual-tank feeding device according to claim 1, characterized in that: The feed end of the conveying pump (8) is equipped with an anti-clogging module, and the discharge end of the conveying pump (8) is equipped with a feeding pipe (11), the upper end of which extends to the top of the conveying water tank (5).

5. The coal-water transfer and dual-tank feeding device according to claim 4, characterized in that: The anti-clogging module includes a transmission rod (12) extending below the delivery pump (8), a mounting block (13) is provided below the transmission rod (12), and a hammer block (14) is provided on the side wall of the mounting block (13).

6. The coal-water transfer and dual-tank feeding device according to claim 5, characterized in that: The number of hammering blocks (14) is multiple and they are evenly distributed along the circumference of the mounting block (13), with a gap reserved between two adjacent hammering blocks (14).

7. The coal-water transfer and dual-tank feeding device according to claim 6, characterized in that: The width of the hammer block (14) gradually increases from bottom to top, and both sides of the hammer block (14) are provided with helical curved surfaces (15).

8. The coal-water transfer and dual-tank feeding device according to claim 1, characterized in that: The filter tank (4) and the conveying tank (5) are located on both sides of the crusher (2).

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