A coal mine sump sludge cleaning device

Abstract

This invention relates to the field of sludge cleaning technology, and more particularly to a sludge cleaning device for coal mine water tanks, comprising a first conveyor belt, a second conveyor belt, and a sludge collection assembly; the second conveyor belt is movably connected to the first end of the first conveyor belt along its extension direction; the sludge collection assembly is rotatably connected to the end of the second conveyor belt, adapted to collect sludge within the water tank. Its advantages are that by movably connecting the second conveyor belt along the extension direction of the first conveyor belt, the sludge collection assembly can selectively extend into different depths of the water tank along with the second conveyor belt, achieving mobile operation and overcoming the drawbacks of existing devices requiring frequent shutdowns for fixed-position cleaning; the rotatably connected and driven by the second conveyor belt, the sludge collection assembly continuously rotates and collects sludge during the deep-penetration process, ensuring complete coverage of the bottom of the water tank without dead angles; the first conveyor belt extends downwards at an angle, receiving the sludge transported by the second conveyor belt and outputting it outwards, forming a continuous cleaning process.

Description

Technical Field

[0001] This invention relates to the field of sludge removal technology, and in particular to a sludge removal device for coal mine water tanks. Background Technology

[0002] Coal mines are areas where humans extract coal resources from coal-rich areas, generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, tunnels are usually excavated underground to extract the coal; this is called an underground coal mine. During the mining process in underground coal mines, multiple water tanks need to be installed to ensure the safety of underground operations. Water tanks are tunnels or chambers used to store and settle mine water, usually located below the level of the mine's bottom level. They typically consist of two independent tunnels with identical cross-sections, forming the main water tank. Over long-term use, because the mine water carries a large amount of suspended solids such as coal slurry and rock cuttings, these naturally settle as the flow rate decreases within the water tank, leading to a buildup of silt at the bottom. Therefore, it is necessary to regularly clean the water tanks using sludge removal equipment to ensure the effective volume of the water tanks and the safety of mine drainage.

[0003] Currently, existing sludge cleaning devices for water tanks typically employ mechanical cleaning methods. These devices insert a cleaning head (such as an auger or scraper) into the sludge layer, using rotation to push and collect the sludge at the cleaning head, thus achieving sludge collection and removal. However, these current sludge cleaning devices have limitations in practical operation: the cleaning head can usually only rotate and push in a fixed position. After cleaning the sludge in that area, the machine must be stopped and repositioned before moving on to the next area. Since the bottom surface of the water tank is usually covered with a large amount of sludge, this fixed-point, intermittent cleaning method makes it impossible to quickly and completely cover the bottom of the water tank, resulting in low work efficiency and the potential for blind spots, leading to incomplete sludge removal and poor overall sludge removal results.

[0004] Therefore, a coal mine water tank sludge cleaning device is proposed, which can move at the bottom of the water tank to thoroughly clean the sludge at the bottom of the water tank. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a coal mine water tank sludge cleaning device, which solves the technical problem that the prior art cannot move at the bottom of the water tank, thus making it impossible to thoroughly clean the sludge at the bottom of the water tank.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0009] This invention provides a coal mine water tank sludge cleaning device, including a first conveyor belt, a second conveyor belt, and a sludge collection assembly; the first conveyor belt extends downward at an incline, the second conveyor belt is parallel to the first conveyor belt, and the second conveyor belt is movably connected to the first end of the first conveyor belt along the extension direction of the first conveyor belt, so as to be suitable for the second conveyor belt to selectively extend into the water tank to a certain depth; the sludge collection assembly is rotatably connected to the end of the second conveyor belt, and the second conveyor belt is drivenly connected to the sludge collection assembly, so as to be suitable for the sludge collection assembly to collect sludge in the water tank.

[0010] Optionally, the first conveyor belt includes a fixed housing, a conveyor belt, multiple stop plates, a first driver, a first support base, and a second support base; the conveyor belt is embedded in the fixed housing, the first driver is driven and connected to the conveyor belt, the multiple stop plates are fixed at intervals on the outer surface of the conveyor belt, the first support base is supported at the first end of the fixed housing, the second support base is supported at the second end of the fixed housing, and the first support base is lower than the second support base, so as to enable the conveyor belt to transport sludge from the first end of the fixed housing to the second end of the fixed housing.

[0011] Optionally, two sliding grooves and two telescopic rods are symmetrically provided on both sides of the fixed housing; the sliding grooves extend along the extension direction of the second conveyor belt, and the telescopic rods are fixed at the first end near the fixed housing, and the extension and retraction direction of the telescopic rods is parallel to the length direction of the sliding grooves.

[0012] Optionally, a guide plate is also fixedly connected to the second end of the fixed housing, and the guide plate extends downward at an angle.

[0013] Optionally, the second conveyor belt includes a movable housing, a dredging belt, multiple dredging plates, a chain, two hanging rods, and a second driver; the dredging belt is embedded in the movable housing, the chain is fixedly connected to the dredging belt, the second driver is driven by the chain, the multiple dredging plates are fixedly fixed to the outer surface of the dredging belt at intervals, and the two hanging rods are symmetrically distributed on both sides of the movable housing. One end of the hanging rod is fixedly connected to the outer wall of the movable housing, and the other end of the hanging rod extends out of the sliding groove and is fixedly connected to the telescopic rod.

[0014] Optionally, the second conveyor belt also includes multiple receiving rollers, which are fixed to the inner wall of the movable housing. The multiple receiving rollers are spaced apart along the extension direction of the movable housing, so that the receiving rollers are supported on the inner side of the upper half of the dredging belt.

[0015] Optionally, the second conveyor belt further includes a first intermediate wheel and a second intermediate wheel, which are disposed at both ends of the dredging belt to tension the dredging belt. The first intermediate wheel and the second intermediate wheel are rotatably connected to the movable housing, and the second driver is driven connected to the first intermediate wheel or the second intermediate wheel.

[0016] Optionally, the mud collection assembly includes a side frame plate, a central shaft, and multiple spiral blades; the central shaft is embedded in the second central wheel and is rotatably connected to the side frame plate, so that the second central wheel can drive the central shaft to rotate; multiple spiral blades are sleeved on the central shaft and are symmetrically distributed about the second central wheel; the spiral directions of the spiral blades on both sides of the second central wheel are opposite; the side frame plate is arc-shaped, and the outer side of the side frame plate is fixed to the end of the movable housing, so that the second central wheel, multiple spiral blades, and central shaft are all located on the inner side of the side frame plate.

[0017] Optionally, a scraper is fixedly connected to the bottom of the side frame plate, and multiple rollers are rotatably connected to the scraper. The multiple rollers are spaced apart along the length of the scraper to allow the mud collection assembly to roll at the bottom of the water tank.

[0018] Optionally, two arc-shaped limiting plates are also fixedly connected to the side frame plate. The two arc-shaped limiting plates are symmetrically distributed about the second middle wheel. The arc-shaped limiting plates cover the periphery of the spiral blade near the second middle wheel, and the radius of the arc-shaped limiting plates becomes smaller and smaller from the direction of the spiral blade towards the second middle wheel, so as to collect the silt on the spiral blade onto the dredging belt.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this invention are as follows: A coal mine water tank sludge cleaning device of this invention includes a first conveyor belt, a second conveyor belt, and a sludge collection assembly. The first conveyor belt extends downwards at an angle, and the second conveyor belt is parallel to the first conveyor belt and movably connected to the first end of the first conveyor belt along its extension direction, adapting to the depth to which the second conveyor belt can selectively penetrate the water tank. The sludge collection assembly is rotatably connected to the end of the second conveyor belt, and the second conveyor belt is driven to the sludge collection assembly, adapting to the sludge collection assembly being able to collect sludge within the water tank. Compared to the prior art, by movably connecting the second conveyor belt along the extension direction of the first conveyor belt, the sludge collection assembly can selectively penetrate different depths into the water tank with the second conveyor belt, achieving mobile operation and overcoming the drawback of frequent shutdowns required for fixed-position cleaning in existing devices. The sludge collection assembly is rotatably connected and driven to the second conveyor belt, continuously rotating to collect sludge during the penetration process, ensuring complete coverage of the bottom of the water tank without dead angles. The first conveyor belt extends downwards at an angle, receiving the sludge transported by the second conveyor belt and outputting it outwards, forming a continuous cleaning process. This significantly improves cleaning efficiency and thoroughness, ensuring the effective volume of the water tank and the safety of mine drainage. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the coal mine water tank sludge cleaning device according to Embodiment 1 of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the coal mine water tank sludge cleaning device from another angle is shown;

[0023] Figure 3 for Figure 2 A partial structural schematic diagram of point A of the coal mine water tank sludge cleaning device is shown;

[0024] Figure 4 for Figure 1 An exploded view of a coal mine water tank sludge cleaning device is shown.

[0025] Figure 5 for Figure 4 A partial structural schematic diagram of point B of the coal mine water tank sludge cleaning device is shown;

[0026] Figure 6 for Figure 1 A schematic diagram of the structure of the second conveyor belt and the sludge collection assembly in the coal mine water tank sludge cleaning device is shown.

[0027] Figure 7 for Figure 1 The image shows a vertically sectional view of a coal mine water tank sludge cleaning device.

[0028] Figure 8 This is a schematic diagram of the coal mine water tank sludge cleaning device according to Embodiment 2 of the present invention from one angle.

[0029] Explanation of reference numerals in the attached figures

[0030] 1: First conveyor belt; 11: Fixed housing; 12: Conveyor belt; 13: Stop plate; 14: First driver; 15: First support base; 16: Second support base; 17: Sliding groove; 18: Telescopic rod; 19: Guide plate;

[0031] 2: Second conveyor belt; 21: Moving housing; 22: Dredging belt; 23: Dredging plate; 24: Chain; 25: Hanging rod; 26: Second drive; 27: Receiving roller; 28: First intermediate wheel; 29: Second intermediate wheel;

[0032] 3: Mud collection assembly; 31: Side frame plate; 32: Central shaft; 33: Spiral blade; 34: Scraper; 35: Roller; 36: Arc-shaped limiting plate. Detailed Implementation

[0033] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0035] Example 1:

[0036] Reference Figures 1 to 7 This embodiment proposes a coal mine water tank sludge cleaning device that can move at the bottom of the water tank to thoroughly clean the sludge at the bottom. Specifically, the coal mine water tank sludge cleaning device in this embodiment includes a first conveyor belt 1, a second conveyor belt 2, and a sludge collection assembly 3, as detailed below.

[0037] In this embodiment, the first conveyor belt 1 extends downwards at an angle to the water tank or an external storage point, facilitating the efficient upward transport of sludge from the water tank to the storage point using gravity and mechanical power, thus reducing energy consumption. The second conveyor belt 2 is arranged parallel to the first conveyor belt 1, and is movably connected to the first end of the first conveyor belt 1 along its extension direction. This allows the second conveyor belt 2 to extend and retract relative to the first conveyor belt 1, enabling selective insertion of the second conveyor belt 2 into different depths within the water tank based on its actual depth and the location of sludge accumulation. This achieves variable-depth operational coverage, solving the problem that fixed-length water tank sludge cleaning devices cannot adapt to different water tanks or water levels.

[0038] The sludge collection component 3 is rotatably connected to the end of the second conveyor belt 2, and the second conveyor belt 2 is driven by the sludge collection component 3. When the second conveyor belt 2 is running, its power is synchronously transmitted to the sludge collection component 3, causing the sludge collection component 3 to rotate at the bottom of the water tank, actively agitating and collecting the sludge onto the second conveyor belt 2. As the second conveyor belt 2 gradually extends into the water tank, the sludge collection component 3 continues to rotate, collecting the sludge and conveying it backward to the first conveyor belt 1, from which it is finally output to the outside of the water tank. Throughout the process, the telescopic movement of the second conveyor belt 2 and the continuous rotation of the sludge collection component 3 work together to achieve comprehensive cleaning while moving at the bottom of the water tank, avoiding dead spots in fixed-point cleaning and significantly improving cleaning efficiency and thoroughness.

[0039] Furthermore, there is a height difference between the second conveyor belt 2 and the first conveyor belt 1, which allows the sludge on the second conveyor belt 2 to be transported to the top and then thrown onto the first conveyor belt 1, thus preventing sludge accumulation on the second conveyor belt 2. In addition, there is a gap between the second conveyor belt 2 and the first conveyor belt 1, which facilitates the flow of water from the sludge transported to the first conveyor belt 1 back to the water tank along the first conveyor belt.

[0040] In summary, by movably connecting the second conveyor belt 2 along the extension direction of the first conveyor belt 1, the sludge collection component 3 can selectively extend into different depths of the water tank along with the second conveyor belt 2, achieving mobile operation and overcoming the drawbacks of existing devices that require frequent shutdowns for fixed-position cleaning. The sludge collection component 3 is rotatably connected and driven by the second conveyor belt 2, continuously rotating to collect sludge during the deepening process, ensuring complete coverage of the bottom of the water tank without any dead corners. The first conveyor belt 1 extends downwards at an angle, receiving the sludge transported by the second conveyor belt 2 and outputting it outwards, forming a continuous cleaning process. This significantly improves cleaning efficiency and thoroughness, ensuring the effective volume of the water tank and the safety of mine drainage.

[0041] Furthermore, the first conveyor belt 1 includes a fixed housing 11, a conveyor belt 12, multiple stop plates 13, a first driver 14, a first support base 15, and a second support base 16.

[0042] Specifically, the fixed housing 11 provides a semi-enclosed conveying channel to accommodate and protect the conveyor belt 12, while preventing sludge from scattering to both sides during transportation, ensuring a clean transportation environment. The conveyor belt 12 is embedded within the fixed housing 11, serving as the component that directly carries and transports the sludge; its continuous cyclical movement achieves material displacement. The first driver 14 is connected to the conveyor belt 12, providing a stable power source for its operation and ensuring continuous sludge transport. Specifically, the first driver 14 is a motor. Multiple stop plates 13 are fixed at intervals to the outer surface of the conveyor belt 12, and the stop plates 13 are fixedly connected to the outer edge of the conveyor belt by welding, screwing, or snapping. The stop plates 13 move together with the conveyor belt 12, effectively preventing sludge from sliding down due to gravity during inclined transportation, separating the sludge between adjacent stop plates 13, thereby ensuring stable upward transport of the sludge, preventing backflow, and significantly improving transportation efficiency. The first support 15 is supported on the first end (the end closer to the water tank) of the housing 11, which is fixed by welding, screwing, or snapping. The second support 16 is supported on the second end (the end farther from the water tank) of the housing 11, which is fixed by welding, screwing, or snapping. The first support 15 is lower than the second support 16. The height difference structure makes the entire fixed housing 11 and the internal conveyor belt 12 inclined upward. That is, the first end is the low-level feeding end and the second end is the high-level discharging end. It not only utilizes gravity to assist feeding, but also, with the combined action of the stop plate 13 and the conveyor belt 12, realizes the smooth transportation of sludge from low to high.

[0043] The first driver 14 drives the conveyor belt 12 to operate, and the conveyor belt 12 drives the stop plate 13 to move synchronously. The stop plate 13 separates and pushes the sludge in the inclined fixed housing 11. The first support 15 and the second support 16 together maintain a stable tilt angle.

[0044] Furthermore, two sliding grooves 17 and two telescopic rods 18 are symmetrically provided on both sides of the fixed housing 11. The sliding grooves 17 extend along the extension direction of the second conveyor belt 2, that is, along the length direction of the fixed housing 11, forming a guide track for the second conveyor belt 2 during movement. This ensures that the second conveyor belt 2 can maintain linear movement during extension and retraction, avoiding skewing or jamming, thereby improving the smoothness and positional accuracy of the extension and retraction movement. The telescopic rods 18 are fixed to the first end near the fixed housing 11 by welding, screwing, or snapping, and the extension and retraction direction of the telescopic rods 18 is parallel to the length direction of the sliding grooves 17. The two symmetrically arranged telescopic rods 18 serve as a power source, with their fixed ends installed on the fixed housing 11 and their movable ends connected to the second conveyor belt 2. Specifically, the telescopic rods 18 are cylinders. When the telescopic rods 18 extend or retract synchronously, they push the second conveyor belt 2 to move back and forth along the guide direction of the sliding grooves 17. The sliding groove 17 and the telescopic rod 18 are structurally coordinated: the sliding groove 17 provides guidance and support, ensuring the accuracy of the movement trajectory of the second conveyor belt 2; the telescopic rod 18 provides driving force, controlling the extension and retraction stroke of the second conveyor belt 2. Their symmetrical arrangement ensures uniform force distribution on the second conveyor belt 2, avoiding jamming or deviation caused by unilateral driving. The second conveyor belt 2 can selectively and precisely extend or retract according to the actual depth of the water tank or the location of silt accumulation, achieving reliable extension and retraction on the fixed housing 11. This provides a structural basis for the sludge collection assembly 3 to penetrate deeper into different areas of the water tank for mobile, comprehensive cleaning.

[0045] Furthermore, the second conveyor belt 2 includes a movable housing 21, a sludge-removing belt 22, multiple sludge-removing plates 23, a chain 24, two hanging rods 25, and a second driver 26. The movable housing 21 serves as the supporting frame of the second conveyor belt 2. The sludge-removing belt 22 is embedded within the movable housing 21, acting as a flexible component that directly bears and transports sludge, and can operate smoothly under the constraint of the movable housing 21. The chain 24 is fixedly connected to the sludge-removing belt 22 by welding, screwing, or snap-fitting. The second driver 26 is driven by the chain 24, driving the sludge-removing belt 22 through chain drive. This transmission method has a large load-bearing capacity and reliable operation, and is particularly suitable for the heavy-load and harsh working environment of underground coal mines with sludge. Specifically, the second driver 26 is an electric motor. Multiple dredging plates 23 are fixed at intervals on the outer surface of the dredging belt 22, and the dredging plates 23 are fixedly connected to the dredging belt 22 by welding, screwing or snapping. When the dredging belt 22 is running, the dredging plates 23 move accordingly. When the end of the moving housing 21 penetrates into the silt layer, the dredging plates 23 can effectively carry the silt and transport it onto the first conveyor belt 1. At the same time, during the inclined transport process, the dredging plates 23 also play a role in preventing the silt from sliding down due to gravity, ensuring that the silt moves stably towards the first conveyor belt 1.

[0046] Two hanging rods 25 are symmetrically distributed on both sides of the movable housing 21. One end of the hanging rod 25 is fixedly connected to the outer wall of the movable housing 21 by welding, screwing, or snapping, while the other end extends out of the sliding groove 17 and is fixedly connected to the telescopic rod 18 by welding, screwing, or snapping. The hanging rod 25 is guided and constrained within the sliding groove 17, ensuring that the movable housing 21 can only move linearly along the direction of the sliding groove 17. At the same time, the fixed connection between the hanging rod 25 and the telescopic rod 18 transmits the driving force of the telescopic rod 18 to the entire second conveyor belt 2. When the telescopic rod 18 extends or retracts, the hanging rod 25 drives the movable housing 21 and all its internal components to move smoothly along the sliding groove 17. In summary, the second drive 26 drives the chain 24 to operate, and the chain 24 drives the dredging belt 22 and the dredging plate 23 to circulate, thereby conveying the sludge backward. At the same time, the telescopic rod 18 drives the entire second conveyor belt 2 to extend and retract along the sliding groove 17 through the hanging rod 25, so that the end of the dredging belt 22 can selectively penetrate into different areas according to the depth of the water tank and the location of the sludge accumulation.

[0047] Furthermore, multiple receiving rollers 27 are fixed to the inner wall of the movable housing 21 of the second conveyor belt 2 by welding, screwing, or snap-fitting. These receiving rollers 27 are spaced apart along the extending direction of the movable housing 21, supporting the inner side of the upper half of the dredging belt 22. As auxiliary support components, the installation method of fixing the receiving rollers 27 to the inner wall ensures positional stability, enabling them to withstand the pressure of the dredging belt 22 for extended periods without shifting. The spaced arrangement of multiple receiving rollers 27 along the extending direction of the movable housing 21 forms continuous support points, effectively supporting the upper half of the dredging belt 22 carrying silt, preventing excessive sagging or wavy deformation under the heavy pressure of the silt, thereby maintaining the flatness and stability of the dredging belt 22's running trajectory. The receiving roller 27 is supported on the inner side of the upper half of the dredging belt 22. This contact position directly acts on the area with the greatest force, transforming the sliding friction between the dredging belt 22 and the moving housing 21 into rolling friction. This significantly reduces the resistance and wear of the dredging belt 22 during operation, extending its service life. Simultaneously, due to the supporting effect of the receiving roller 27, the dredging plate 23 maintains a firm connection with the dredging belt 22 during sludge scraping and transportation, preventing changes in the angle of the dredging plate 23 or its detachment due to deformation of the dredging belt 22, ensuring consistent sludge scraping performance.

[0048] Furthermore, within the movable housing 21 of the second conveyor belt 2, a first intermediate wheel 28 and a second intermediate wheel 29 are also provided. The first intermediate wheel 28 and the second intermediate wheel 29 are located at opposite ends of the dredging belt 22, working together to tension the dredging belt 22, ensuring it maintains appropriate tension and stable operation. The first intermediate wheel 28 and the second intermediate wheel 29 are rotatably connected within the movable housing 21, allowing them to rotate freely with the movement of the dredging belt 22, converting the sliding friction of the dredging belt 22 into rolling friction, reducing resistance and wear. The first intermediate wheel 28 and the second intermediate wheel 29 are located at opposite ends, providing bidirectional tension to the dredging belt 22, preventing slackness, deviation, or slippage during long-term heavy-duty operation, ensuring the synchronous and stable movement of the dredging belt 22 and the dredging plate 23, thereby maintaining consistency in sludge scraping and conveying effects. The second drive 26 is driven to either the first intermediate wheel 28 or the second intermediate wheel 29. That is, the second drive 26 selectively drives one of the intermediate wheels to rotate. The driven first intermediate wheel 28 or the second intermediate wheel 29 acts as the driving wheel and drives the dredging belt 22 to rotate through friction. The driven intermediate wheel at the other end rotates synchronously with the dredging belt 22 and remains in a tensioned state.

[0049] The first intermediate wheel 28 and the second intermediate wheel 29 cooperate with each other, providing driving force at one end and tension force at the other end, to maintain the stable cyclic movement of the dredging belt 22. At the same time, they work together with the receiving roller 27, which supports the upper load-bearing section of the dredging belt 22. The first intermediate wheel 28 and the second intermediate wheel 29 control the direction and tension at both ends of the dredging belt 22, so that the entire dredging belt 22 forms a stable, low-resistance closed-loop operating system within the moving housing 21, providing a reliable guarantee for the continuous scraping and conveying of silt by the dredging plate 23.

[0050] Furthermore, the sludge collection assembly 3 includes a side frame plate 31, a central shaft 32, and multiple spiral blades 33. The central shaft 32 is embedded in the second central wheel 29 and is rotatably connected to the side frame plate 31. This allows the second central wheel 29 to directly drive the central shaft 32 to rotate synchronously while rotating to drive the sludge removal belt 22, eliminating the need for an additional power source and achieving integrated power transmission, simplifying the structure and reducing energy consumption. Multiple spiral blades 33 are sleeved on the central shaft 32 and are symmetrically distributed about the second central wheel 29. The spiral directions of the spiral blades 33 on both sides of the second central wheel 29 are opposite. When the central shaft 32 is driven to rotate by the second central wheel 29, the spiral blades 33 on both sides rotate simultaneously, generating thrust in opposite directions, which concentrates and pushes the sludge on both sides of the central shaft 32 towards the center (i.e., the location of the second central wheel 29). This design effectively expands the cleaning width of a single operation, allowing sludge from a larger area at the bottom of the water tank to be collected near the second intermediate wheel 29. This facilitates direct scraping and conveying by the sludge-removing plate 23 at the end of the sludge-removing belt 22, preventing sludge residue in corners and significantly improving the comprehensiveness and efficiency of the cleaning process. The side frame plate 31 is arc-shaped, and its outer surface is fixed to the end of the movable housing 21 by welding, screwing, or snapping, so that the second intermediate wheel 29, multiple spiral blades 33, and central shaft 32 are all located on the inner surface of the side frame plate 31. The arc-shaped side frame plate 31 serves as a protective cover, enclosing the rotating spiral blades 33 and central shaft 32 to prevent interference with the side walls or injury to personnel in the narrow underground environment. Furthermore, its arc-shaped inner wall coordinates with the movement trajectory of the spiral blades 33, guiding the pushed sludge smoothly along the arc surface towards the entrance of the sludge-removing belt 22, preventing the sludge from scattering in all directions.

[0051] Furthermore, a scraper 34 is fixedly connected to the bottom of the side frame plate 31 by welding, screwing, or snap-fitting. Multiple rollers 35 are rotatably connected to the scraper 34, and the rollers 35 are spaced apart along the length of the scraper 34. As a component that directly contacts the bottom of the water tank, the scraper 34 is fixedly connected to the bottom of the side frame plate 31, so that when the sludge collection assembly 3 extends into the water tank with the second conveyor belt 2, the scraper 34 can closely adhere to the bottom surface of the tank, assisting in scraping and smoothing the deposited sludge. It also scrapes up thin layers of sludge or hard sediment that cannot be pushed by the spiral blades 33 in time, loosening them and mixing them into the flowing sludge, making it easier for the spiral blades 33 to collect and for the sludge removal belt 22 to transport, thereby further improving the thoroughness of the cleaning. Multiple rollers 35 are rotatably connected to the scraper 34 and spaced apart along the length of the scraper 34. These rollers 35 convert the sliding friction between the scraper 34 and the bottom of the water tank into rolling friction, significantly reducing the resistance and wear of the sludge collection assembly 3 during movement. This allows the second conveyor belt 2 to move the entire sludge collection assembly 3 more easily and smoothly at the bottom of the water tank under the push of the telescopic rod 18. The spacing of the rollers 35 ensures that the scraper 34 is evenly supported at any position, preventing the scraper 34 from jamming or being damaged due to excessive local force.

[0052] The scraper 34 and roller 35 work together: the scraper 34 is responsible for cleaning and disturbing the bottom sludge, and the roller 35 is responsible for supporting and reducing resistance during movement; the two work together to ensure that the sludge collection assembly 3 can always move smoothly close to the bottom of the water tank during the extension and retraction of the second conveyor belt 2, while continuously scraping and collecting sludge, effectively ensuring the smoothness and thoroughness of the mobile comprehensive cleaning.

[0053] Furthermore, two arc-shaped limiting plates 36 are fixedly connected to the side frame plate 31 by welding, screwing, or snap-fitting. The two arc-shaped limiting plates 36 are symmetrically distributed about the second intermediate wheel 29. The arc-shaped limiting plates 36 cover the periphery of the spiral blade 33 near the second intermediate wheel 29, and the radius of the arc-shaped limiting plates 36 decreases from the direction of the spiral blade 33 towards the second intermediate wheel 29. As a guiding and converging structure in the sludge collection assembly 3, the symmetrical distribution of the arc-shaped limiting plates 36 corresponds to the symmetrical layout of the spiral blade 33, ensuring that the sludge pushed from both sides can be effectively constrained and guided. The arc-shaped limiting plates 36 covering the periphery of the spiral blade 33 are equivalent to forming a semi-enclosed shell around the rotating spiral blade 33, preventing the sludge from being thrown out of the working area of ​​the spiral blade 33 by centrifugal force when rotating at high speed or when there is a lot of sludge, thus avoiding material loss and secondary cleaning. More importantly, from the direction of the spiral blade 33 approaching the second intermediate wheel 29, the radius of the arc-shaped limiting plate 36 becomes smaller and smaller. This gradually narrowing geometric feature causes the space between the spiral blade 33 and the limiting plate to gradually narrow. When the spiral blade 33 rotates and pushes the sludge towards the second intermediate wheel 29, the narrowing channel exerts a squeezing and guiding effect on the sludge, forcing the sludge to flow along the inner wall of the limiting plate to the entrance of the sludge dredging belt 22. This ensures that the sludge can be efficiently and accurately transferred to the sludge dredging belt 22, avoiding accumulation or blockage at the end of the spiral blade 33.

[0054] The arc-shaped limiting plate 36 works closely with the spiral blade 33, the second intermediate wheel 29, and the side frame plate 31: the spiral blade 33 is responsible for pushing the sludge, the arc-shaped limiting plate 36 is responsible for restraint and guidance, the second intermediate wheel 29 serves as the power source, and the side frame plate 31 provides the installation foundation, so that after the sludge is collected from the bottom of the water tank by the spiral blade 33, it can smoothly converge and be fed into the sludge removal belt 22, which significantly improves the efficiency and reliability of the sludge collection assembly 3 in transferring materials to the second conveyor belt 2, and provides a key guarantee for continuous sludge removal operations.

[0055] Example 2:

[0056] Reference Figure 8 The difference between this embodiment and embodiment 1 is that this embodiment also includes a guide plate 19, which is described in detail below.

[0057] In this embodiment, a guide plate 19 is fixedly connected to the second end of the fixed housing 11, i.e., the high discharge end of the first conveyor belt 1 where sludge is discharged, by means of welding, screwing, or snap-fitting. The guide plate 19 extends downward at an incline. Specifically, the second end of the fixed housing 11 serves as the discharge point of the conveyor belt 12, where the sludge is transported to its highest point and prepared to leave the conveyor belt 12. The guide plate 19 is fixedly connected to this end, and its downward incline precisely catches the sludge falling from the conveyor belt 12. After the sludge is transported to the second end and detaches from the stop plate 13 and the conveyor belt 12, it falls onto the surface of the guide plate 19 under the action of gravity and slides smoothly along the incline of the guide plate 19 into a preset collection area or subsequent transportation equipment. The guide plate 19 serves a dual purpose: buffering and guiding. On the one hand, it prevents dust, splashing, or scattering caused by sludge falling vertically from a height, making the unloading process cleaner and more controllable. On the other hand, its downward tilt angle allows gravity to automatically guide the sludge flow, achieving orderly unloading without additional power. In summary, the downward tilting guide plate 19 at the end of the upward-tilting fixed housing 11 ensures that the sludge remains under control throughout the entire process from feeding and conveying to unloading, ultimately forming an efficient, clean, and continuous closed loop for sludge conveying.

[0058] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0059] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for cleaning sludge from a coal mine water tank, characterized in that, It includes a first conveyor belt (1), a second conveyor belt (2), and a mud collection assembly (3); The first conveyor belt (1) extends downward at an angle, the second conveyor belt (2) is parallel to the first conveyor belt (1), and the second conveyor belt (2) is movably connected to the first end of the first conveyor belt (1) along the extension direction of the first conveyor belt (1) so as to be suitable for the second conveyor belt (2) to selectively extend into the depth of the water tank; The sludge collection assembly (3) is rotatably connected to the end of the second conveyor belt (2), and the second conveyor belt (2) is driven to connect with the sludge collection assembly (3) so that the sludge collection assembly (3) can collect sludge in the water tank.

2. The coal mine water tank sludge cleaning device as described in claim 1, characterized in that: The first conveyor belt (1) includes a fixed housing (11), a conveyor belt (12), multiple stop plates (13), a first driver (14), a first support base (15), and a second support base (16). The conveyor belt (12) is embedded in the fixed housing (11). The first driver (14) is driven to connect with the conveyor belt (12). A plurality of stop plates (13) are fixed at intervals to the outer surface of the conveyor belt (12). The first support (15) is supported at the first end of the fixed housing (11). The second support (16) is supported at the second end of the fixed housing (11). The first support (15) is lower than the second support (16) so that the conveyor belt (12) can transport sludge from the first end of the fixed housing (11) to the second end of the fixed housing (11).

3. The coal mine water tank sludge cleaning device as described in claim 2, characterized in that: The fixed housing (11) is also symmetrically provided with two sliding grooves (17) and two telescopic rods (18) on both sides. The sliding groove (17) extends along the extension direction of the second conveyor belt (2), and the telescopic rod (18) is fixed at the first end near the fixed housing (11), and the extension direction of the telescopic rod (18) is parallel to the length direction of the sliding groove (17).

4. The coal mine water tank sludge cleaning device as described in claim 2, characterized in that: The second end of the fixed housing (11) is also fixedly connected to a guide plate (19), which extends downward at an angle.

5. The coal mine water tank sludge cleaning device as described in claim 3, characterized in that: The second conveyor belt (2) includes a movable housing (21), a sludge removal belt (22), multiple sludge removal plates (23), a chain (24), two hanging rods (25), and a second driver (26); The dredging belt (22) is embedded in the movable housing (21). The chain (24) is fixedly connected to the dredging belt (22). The second driver (26) is drivenly connected to the chain (24). Multiple dredging plates (23) are fixed at intervals on the outer surface of the dredging belt (22). Two hanging rods (25) are symmetrically distributed on both sides of the movable housing (21). One end of the hanging rod (25) is fixedly connected to the outer wall of the movable housing (21). The other end of the hanging rod (25) extends out of the sliding groove (17) and is fixedly connected to the telescopic rod (18).

6. The coal mine water tank sludge cleaning device as described in claim 5, characterized in that: The second conveyor belt (2) also includes a plurality of receiving rollers (27), which are fixed to the inner sidewall of the movable housing (21). The plurality of receiving rollers (27) are spaced apart along the extension direction of the movable housing (21), such that the receiving rollers (27) are supported on the inner side of the upper half of the dredging belt (22).

7. The coal mine water tank sludge cleaning device as described in claim 5, characterized in that: The second conveyor belt (2) further includes a first intermediate wheel (28) and a second intermediate wheel (29). The first intermediate wheel (28) and the second intermediate wheel (29) are disposed at both ends of the dredging belt (22) to tension the dredging belt (22). The first intermediate wheel (28) and the second intermediate wheel (29) are rotatably connected to the movable housing (21), and the second driver (26) is driven connected to the first intermediate wheel (28) or the second intermediate wheel (29).

8. The coal mine water tank sludge cleaning device as described in claim 7, characterized in that: The mud collection assembly (3) includes a side frame plate (31), a central shaft (32), and multiple spiral blades (33). The central shaft (32) is embedded in the second central wheel (29), and the central shaft (32) is rotatably connected to the side frame plate (31), so that the second central wheel (29) can drive the central shaft (32) to rotate. A plurality of spiral blades (33) are sleeved on the central shaft (32), and the plurality of spiral blades (33) are symmetrically distributed about the second central wheel (29). The spiral directions of the spiral blades (33) on both sides of the second central wheel (29) are opposite. The side frame plate (31) is arc-shaped, and the outer side of the side frame plate (31) is fixed to the end of the movable housing (21), so that the second central wheel (29), the plurality of spiral blades (33) and the central shaft (32) are all located on the inner side of the side frame plate (31).

9. The coal mine water tank sludge cleaning device as described in claim 8, characterized in that: A scraper (34) is fixedly connected to the bottom of the side frame plate (31), and multiple rollers (35) are rotatably connected to the scraper (34). The multiple rollers (35) are spaced apart along the length direction of the scraper (34) so ​​that the mud collection assembly (3) can roll at the bottom of the water tank.

10. The coal mine water sump sludge cleaning device as described in claim 8, characterized in that: Two arc-shaped limiting plates (36) are also fixedly connected to the side frame plate (31). The two arc-shaped limiting plates (36) are symmetrically distributed about the second middle wheel (29). The arc-shaped limiting plates (36) cover the periphery of the spiral blade (33) near the second middle wheel (29), and the radius of the arc-shaped limiting plates (36) becomes smaller and smaller from the direction of the spiral blade (33) near the second middle wheel (29) to facilitate the collection of silt on the spiral blade (33) onto the dredging belt (22).

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