A filtering device for underground water sump in coal mine

Abstract

The present invention discloses a filtering device for underground water sump in coal mines, which comprises a frame arranged on the water sump and a track erected above the water sump. A belt conveyor capable of moving back and forth is arranged on the track. The frame is provided with a frame beam. Two filtering boxes arranged front and back are provided below the frame beam. Two groups of hoisting systems for hoisting the two filtering boxes respectively are further arranged on the frame. Two bottom plates capable of being opened and closed are arranged at the bottom of the filtering box. The filtering boxes in this device are divided into two groups, front and back, which can realize the filtration before the water gushing into the sump. The filtered sundries can be transported out through the belt conveyor or other means. Multiple layers of filter meshes are arranged in the filtering box to realize the multi-layer fine filtration of sundries. The water guide plate can reduce the precipitation of sundries in the water in the filter pool. All actions of the device during operation can be controlled by an external control cabinet 13 to realize the remote control without on-site personnel.

Description

Technical Field

[0001] The present invention relates to the field of filtering equipment, and more particularly to a filtering equipment for underground water sump in coal mines. Background Art

[0002] The underground water sump in coal mines is an important facility to ensure safe production and prevent mine water disasters. With the extension of mine exploitation, the water inflow of the mine gradually increases, and the water inflow that cannot be discharged to the ground in time by the drainage pump accumulates in the underground water sump. Since a large amount of water inflow carries solid particles into the sump, the effective water storage volume of the underground water sump is reduced, and the solid matter deposited in the sump must be cleaned regularly. At present, most mines still use regular manual dredging. The working conditions of the underground water sump are harsh, the water content in the sediment is large, the manual dredging work efficiency is low, and the cross-section of the sump is limited, so it is impossible to arrange many people to work at the same time, resulting in a long sump cleaning cycle and affecting safe production. Therefore, designing a set of efficient mine water sump filtering system to convert the regular passive dredging of the sump into the active filtration of the water entering the sump before it enters the sump to reduce the amount of solid particles carried by the water entering the sump, and solve the problem of accumulated materials in the sump from the source, which has important practical significance for reducing the labor intensity of workers, improving the utilization efficiency of the sump volume and the flood resistance ability of the sump, and ensuring the safe production of the mine. Summary of the Invention

[0003] Aiming at the above existing technical deficiencies, the purpose of the present invention is to provide a filtering equipment for underground water sump in coal mines, which can realize the filtration before the water inflow enters the sump, realize the multi-layer refined filtration of sundries, and can be controlled by an external control cabinet to realize remote control and unattended operation.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention provides a filtering equipment for underground water sump in coal mines, including a frame arranged above the sump, a track is also arranged above the sump, a belt conveyor capable of moving back and forth is arranged on the track, the frame is provided with a frame beam, two filtering boxes arranged front and back are arranged below the frame beam, two sets of hoisting systems for hoisting the two filtering boxes respectively are also arranged on the frame, the hoisting system includes a hoisting machine fixed on the frame, and the hoisting rope chain on the hoisting machine passes through the fixed pulley on the frame beam and then is connected with the filtering box; the filtering box includes side plates, front and back plates with water drainage holes, and two bottom plates capable of opening and closing, one end of the bottom plate is fixed with a gate plate, the gate plate is rotatably connected to the front and back plates, two first support plates and second support plates arranged at a certain angle are arranged at the upper end of the gate plate, a limit block is arranged above each filtering box, the limit block is fixed on the frame beam and a column is arranged at the bottom thereof, the column can control the opening of the two bottom plates by pressing down the two first support plates, and a reset rope is also connected between the two first support plates and the column.

[0006] Preferably, a number of filter meshes are evenly distributed in the filter box from front to back, and the filtration accuracy of the filter meshes gradually increases from front to back.

[0007] Preferably, sleeves for restricting the displacement direction of the columns are fixed on the front and rear plates of the filter box.

[0008] Preferably, a water guide plate is suspended at the bottom of the filter box through a suspension rope chain, and the shape of the water guide plate is the same as the shape of the vertical projection of the filter box on the horizontal plane.

[0009] Preferably, when the filter box is lifted to the highest position, the water guide plate is exactly flush with the inlet and outlet of the water sump, preventing sundries from falling to the bottom of the water sump.

[0010] Preferably, the two hoisting machines are respectively arranged at the front and rear ends of the frame.

[0011] The beneficial effects of the present invention are as follows: The filter box in this equipment is divided into two groups, front and back, which can realize the filtration before the gushing water enters the sump; the filtered sundries can be transported out through a belt conveyor or other means; multiple layers of filter meshes are provided in the filter box to achieve multi-layer refined filtration of sundries; the water guide plate can reduce the precipitation of sundries in the water in the filter pool; all the actions of this equipment during operation can be controlled by an external control cabinet, realizing remote control and unattended operation. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0013] Figure 1 It is a schematic structural diagram of a coal mine underground water sump filtering device provided by an embodiment of the present invention;

[0014] Figure 2 It is a schematic structural diagram (front view) of a coal mine underground water sump filtering device provided by an embodiment of the present invention.

[0015] Explanation of the Reference Numerals in the Drawings:

[0016] 1. Hoisting machine; 2. Frame; 3. Filter box; 3-1. Front and rear plates; 3-2. Gate plate; 3-3. Bottom plate; 3-4. First support plate; 3-5. Filter mesh; 3-6. Sleeve; 3-7. Second support plate; 4. Water guide plate; 5. Hoisting rope chain; 6. Suspension rope chain; 7. Limit block; 8. Column; 10. Track; 11. Belt conveyor; 12. Mine car; 13. Control cabinet. Detailed Embodiments

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] As Figures 1 to 2 shown, a filtering device for a coal mine underground sump includes a frame 2 provided above the sump. A track 10 is also installed above the sump. A belt conveyor 11 capable of moving back and forth is provided on the track 10. The frame 2 is provided with a frame beam 21. Two filtering boxes 3 arranged front and back are provided below the frame beam 21. Two hoisting systems for hoisting the two filtering boxes 3 respectively are also provided on the frame 2. The hoisting system includes a hoist 1 fixed on the frame 2. The hoisting rope chain 5 on the hoist 1 passes through the fixed pulley on the frame beam 21 and is connected to the filtering box 3. The filtering box 3 includes side plates, front and rear plates 3-1 with water draining holes, and two bottom plates 3-3 that can be opened and closed. One end of the bottom plate 3-3 is fixed with a gate plate 3-2. The gate plate 3-2 is rotatably connected to the front and rear plates 3-1. Two first support plates 3-4 and second support plates 3-7 arranged at a certain angle are provided at the upper end of the gate plate 3-2. A limit block 7 is provided above each filtering box 3. The limit block 7 is fixed on the frame beam 21 and a column 8 is provided at its bottom. The column 8 can control the opening of the two bottom plates 3-3 by pressing down the two first support plates 3-4. A reset rope is also connected between the two first support plates 3-4 and the column 8. The two hoisting devices 1 and the belt conveyor 11 are respectively connected to an external control cabinet 13, and intelligent control operations are realized through the control cabinet 13.

[0019] A number of filter meshes are evenly distributed in sequence from front to back in the filtering box 3, and the filtering precision of the filter meshes gradually increases from front to back.

[0020] Sleeves 3-6 for restricting the displacement direction of the column 8 are fixed on the front and rear plates 3-1 of the filtering box 3.

[0021] A water guide plate 4 is hoisted by a suspension rope chain 6 at the bottom of the filtering box 3. The shape of the water guide plate 4 is the same as the shape of the vertical projection of the filtering box 3 on the horizontal plane.

[0022] When the filtering box 3 is lifted to the highest position, the water guide plate 4 is exactly flush with the sump inlet and outlet, preventing sundries from falling into the bottom of the sump.

[0023] The two hoists 1 are respectively arranged at the front and rear ends of the frame 2.

[0024] The top of the filter box 3 is higher than the water surface of the sump to prevent water from flowing into the filter box 3 from above.

[0025] During use, first move the entire filtering equipment along the track 10 above the sump, and then use two hoists 1 to place the two filter boxes 3 into the sump for a period of time. The water flow passes through the front and rear plates 3-1 in front of the filter box 3, passes through the water drainage holes and enters the box, and then flows through the filter screens in sequence and is filtered in multiple layers. Subsequently, the hoisting device 1 lifts one end of the filter box 3 to a high position through the lifting rope chain 5, and then controls the water for a period of time. The belt conveying end of the belt conveyor 11 moves below the filter box 3. The hoisting device 1 continues to lift the filter box 3 upward through the lifting rope chain 5. The upright columns 8 on the limit block 7 approach and press down on the two first support plates 3-4 on the filter box 3, and the two bottom plates 3-3 rotate and separate. The sundries in the filter box 3 are then unloaded onto the belt end of the belt conveyor 11, and the sundries are then conveyed by the belt into the mine car 12 and transported away. After moving the belt conveyor 11 away, lower the filter box 3 through the hoisting device 1. The filter box 3 moves away from the upright column 8. When the filter box 3 reaches the designed water control position, the reset rope pulls up the two first support plates 3-4 to be close together to complete the reset, and the two bottom plates 3-3 close. At this time, the two second support plates 3-7 respectively abut against the side plates.

[0026] Use another hoisting device 1 to perform hoisting operations on the other filter box 3. After hoisting, control the water, and then the belt conveying end of the belt conveyor 11 moves below the filter box 3 through the track 10 and operates according to the above process. The two filter boxes 3 alternate operations in sequence.

[0027] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A filtering device for underground sump water in coal mines, characterized in that: It includes a frame (2) arranged above the sump. There is also a track (10) erected above the sump. A belt conveyor (11) capable of moving back and forth is provided on the track (10). The frame (2) is provided with a frame beam (21). Below the frame beam (21), there are two filter boxes (3) arranged front and back. Two hoisting systems for hoisting the two filter boxes (3) respectively are also provided on the frame (2). The hoisting system includes a hoist (1) fixed on the frame (2). The hoisting rope chain (5) on the hoist (1) passes through a fixed pulley on the frame beam (21) and is connected to the filter box (3). The filter box (3) includes side plates, front and back plates (3-1) with water drainage holes, and two bottom plates (3-3) that can be opened and closed. One end of the bottom plate (3-3) is fixed with a gate plate (3-2). The gate plate (3-2) is rotatably connected to the front and back plates (3-1). Two first support plates (3-4) and second support plates (3-7) arranged at a certain angle are provided at the upper end of the gate plate (3-2). A limit block (7) is provided above each filter box (3). The limit block (7) is fixed on the frame beam (21) and a vertical column (8) is provided at its bottom. The vertical column (8) can control the opening of the two bottom plates (3-3) by pressing down the two first support plates (3-4). A reset rope is also connected between the two first support plates (3-4) and the vertical column (8). A number of filter meshes are evenly distributed in sequence from front to back in the filter box (3). The filtration accuracy of the filter meshes gradually increases from front to back. A water guide plate (4) is hoisted by a suspension rope chain (6) at the bottom of the filter box (3). The shape of the water guide plate (4) is the same as the shape of the vertical projection of the filter box (3) on the horizontal plane.

2. The filtering device for the underground sump in a coal mine according to claim 1, characterized in that: Sleeves (3-6) for restricting the displacement direction of the vertical column (8) are fixed on the front and back plates (3-1) of the filter box (3).

3. The filtering device for the sump in a coal mine according to claim 2, wherein: When the filter box (3) is lifted to the highest position, the water guide plate (4) is exactly flush with the inlet and outlet of the sump, preventing sundries from falling to the bottom of the sump.

4. A filtering device for a coal mine sump water as described in claim 1, characterized in that: The two hoists (1) are respectively arranged at the front and rear ends of the frame (2).

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