Coal mining waste residue and waste water recycling, purifying and circulating environment-friendly system

Abstract

The invention provides a coal mining waste residue and wastewater recycling, purifying and circulating environment-friendly system, and relates to the technical field of coal mining wastewater treatment. The coal mining waste residue and wastewater recycling, purifying and circulating environment-friendly system comprises a water receiving pool and a high-pressure pump. Waste water with waste residues after coal washing is fed into the rollers through the inlet pipe, solid-liquid separation of different degrees is achieved during rotation through the rollers of a three-layer structure, the water content of the separated waste residues is extremely low, and the waste residues are discharged from outlets in the right ends of the first roller, the second roller and the third roller in a segmented mode through the spiral grooves. The device is compact in structure and small in occupied area, the water receiving pool is arranged below the roller to receive mud-containing wastewater generated during separation, clear water is obtained in an overflow precipitation clarification mode, the clear water is pumped through the high-pressure pump to achieve cyclic utilization, the operation part of the roller is located in the water receiving pool, and therefore the operation efficiency of the device is improved. And the problems of running, emitting, dripping and leaking are effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of coal mining wastewater treatment, in particular to a coal mining waste residue wastewater recovery, purification, circulation and environmental protection system. Background Art

[0002] At present, the equipment investment in tailings treatment and wastewater recycling in coal mining is huge, but the equipment operation effect is not very ideal. First, it cannot achieve complete recycling and solid discharge; second, the investment is large, the equipment consumption is huge, the area is large, and the effect is meager; third, the long line leads to many shortcomings such as running, bubbling, dripping, and leakage, and it is impossible to achieve the real effect of solid discharge of waste mines and recycling of wastewater; To this end, it is necessary to develop a coal mining waste slag and wastewater recycling, purification and circulation environmental protection system to solve the problems of large investment, large area and long lines of existing equipment, as well as the problem that existing equipment cannot achieve complete wastewater recycling and solid discharge of waste slag. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a coal mining waste slag and wastewater recovery, purification, circulation and environmental protection system, which solves the problems of large equipment investment, large area and long lines in the prior art coal mining waste slag and wastewater recovery, purification, circulation and environmental protection system, as well as the problem that the existing equipment cannot achieve complete wastewater recovery and solid discharge of waste slag.

[0004] To achieve the above purpose, the present invention is implemented through the following technical solutions: a coal mining waste slag wastewater recovery, purification, circulation and environmental protection system, including a water receiving pool and a high-pressure pump, the front wall of the water receiving pool is sequentially provided with a first sedimentation tank, a second sedimentation tank, a third sedimentation tank and a water pool from back to front, the water pumping end of the high-pressure water pump is connected with the water pool, the inside of the water receiving pool is fixedly connected with a cover shell through a bracket, the inside of the cover shell is rotatably connected with a roller, the roller is composed of a first roller, a second roller and a third roller distributed sequentially from the inside to the outside, the roller is low on the left and high on the right, the left end of the roller is fixedly connected with an inlet pipe, the left wall of the cover shell is distributed up and down and sequentially fixedly connected with a drive box and a connecting box, the end of the inlet pipe away from the roller passes through the left wall of the cover shell, the right wall of the connecting box, the left wall of the connecting box and the left wall of the connecting box in sequence and extends to the left side of the connecting box, a rotating drive structure for driving the inlet pipe to rotate is provided between the drive box and the inlet pipe, and the inner walls of the first roller, the second roller and the third roller are all provided with a plurality of groups of filter holes for separating wastewater and waste slag.

[0005] Preferably, the heights of the upper openings of the water receiving tank, the first sedimentation tank, the second sedimentation tank, the third sedimentation tank and the water use tank decrease in sequence from back to front, and the front walls of the water receiving tank, the first sedimentation tank, the second sedimentation tank and the third sedimentation tank are fixedly connected with a water diversion trough extending forward near the upper wall.

[0006] Preferably, the first sedimentation tank, the second sedimentation tank, the third sedimentation tank and the lower wall of the water pool are all provided with four groups of rollers for easy movement.

[0007] Preferably, the left ends of the first roller, the second roller and the third roller are fixedly connected to a turntable, the right end of the inlet pipe passes through the turntable and is fixedly connected thereto, and one end of the inlet pipe passes through the turntable and extends into the interior of the first roller.

[0008] Preferably, the end of the third roller away from the turntable is rotatably connected to the inner upper wall of the cover shell through a third rotating seat, and the third roller and the second roller as well as the second roller and the first roller are supported and fixed by multiple groups of support rods, and the multiple groups of support rods are all located at the end of the roller away from the turntable.

[0009] Preferably, a section of the outer wall of the inlet pipe located inside the connection box is rotatably connected to the lower wall of the connection box through two groups of second rotating seats, and a spiral blade coiled in a spiral shape is fixedly connected to the inner wall of the inlet pipe.

[0010] Preferably, the inner side walls of the first roller, the second roller and the third roller are all provided with spiral grooves which are consistent with the spiral direction of the spiral blades, and the multiple groups of filter holes are respectively arranged on the inner side walls of the multiple groups of spiral grooves.

[0011] Preferably, the diameter of the filter holes on the inner wall of the second drum is smaller than the diameter of the filter holes on the inner wall of the first drum and larger than the diameter of the filter holes on the inner wall of the third drum.

[0012] Preferably, the first roller, the second roller and the third roller all extend to the right side of the water receiving pool in a top view from one end away from the turntable, and the length of the first roller is greater than that of the second roller, and the length of the second roller is greater than that of the third roller.

[0013] Preferably, the rotary drive structure includes a first gear, a second gear, a rotating shaft and a motor, the motor is fixedly connected to a side of the drive box away from the cover shell, the motor extension shaft passes through the left wall of the drive box and extends into the interior of the drive box, the rotating shaft is fixedly connected to the end of the motor extension shaft through a coupling, the end of the rotating shaft away from the coupling is rotatably connected to the inner right wall of the drive box through a first rotating seat, the first gear and the second gear are fixedly connected to the outer wall of the rotating shaft and the outer wall of the inlet pipe respectively, and the first gear and the second gear are meshed with each other.

[0014] The present invention provides a coal mining waste residue and wastewater recycling purification and circulation environmental protection system. It has the following beneficial effects: Compared with the existing technology, the coal mining waste slag wastewater recovery, purification and circulation environmental protection system, the wastewater with waste slag after coal washing is sent into the drum through the inlet pipe, and the three-layer drum realizes different degrees of solid-liquid separation during rotation. The separated waste slag has very little water content, and the waste slag is discharged in sections from the first drum, the second drum and the right end outlet of the third drum through the spiral groove, so as to achieve the purpose of solid discharge of waste slag. The equipment has a compact structure and occupies little space.

[0015] Compared with the existing technology, the coal mining waste slag wastewater recovery, purification and circulation environmental protection system is equipped with a water receiving pool under the drum to receive the muddy wastewater generated during separation, and obtains clean water through overflow sedimentation clarification, so that the clean water can be extracted by a high-pressure pump and then recycled. The operating parts of the drum are all located in the water receiving pool, which effectively solves the problems of running, bubbling, dripping and leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a partial cross-sectional view of the internal structure of the drive box, the connection box, the cover, the inlet pipe and the drum of the present invention; Figure 3 For the present invention Figure 2 A partial enlarged view of the middle A; Figure 4 It is a partial cross-sectional view of the connection structure of the drum, the cover shell, the third rotating seat and the support rod of the present invention; Figure 5 This is an axial schematic diagram of the connection structure of the first roller, the second roller and the third roller of the present invention; Figure 6 It is a schematic diagram of the axial section of the internal structure of the inlet pipe of the present invention.

[0017] Among them, 1. water receiving tank; 2. first sedimentation tank; 3. second sedimentation tank; 4. third sedimentation tank; 5. water tank; 6. roller; 7. water diversion trough; 8. bracket; 9. cover; 10. connection box; 11. drive box; 12. inlet pipe; 13. motor; 14. coupling; 15. first roller; 16. second roller; 17. third roller; 18. first rotating seat; 19. rotating shaft; 20. first gear; 21. second rotating seat; 22. second gear; 23. spiral blade; 24. spiral groove; 25. filter hole; 26. third rotating seat; 27. support rod; 28. turntable. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0019] like Figures 1 to 6 As shown, the embodiment of the present invention provides a coal mining waste slag and wastewater recycling purification and circulation environmental protection system, including a water receiving pool 1 and a high-pressure pump; In order to receive and precipitate the wastewater separated by the drum, the front wall of the water receiving tank 1 is provided with a first sedimentation tank 2, a second sedimentation tank 3, a third sedimentation tank 4 and a water tank 5 from back to front, and the water pumping end of the high-pressure water pump is connected with the water tank 5. The height of the upper opening of the water receiving tank 1, the first sedimentation tank 2, the second sedimentation tank 3, the third sedimentation tank 4 and the water tank 5 is reduced in sequence from back to front. The front walls of the water receiving tank 1, the first sedimentation tank 2, the second sedimentation tank 3 and the third sedimentation tank 4 and the position close to the upper wall are fixedly connected with a water diversion trough 7 extending forward. The wastewater generated when the drum separates the waste residue and wastewater can be received through the water receiving tank 1 to avoid flowing to the ground to cause pollution and waste. After the wastewater flows into the water receiving tank 1, it flows into the first sedimentation tank 2, the second sedimentation tank 3, and the third sedimentation tank 4 one by one by overflow sedimentation until it flows into the water tank 5 after forming clear water, and then the clear water in the water tank 5 is pumped to the front process to participate in the coal washing operation by the high-pressure pump, so as to realize the recycling of wastewater; In order to facilitate movement, the first sedimentation tank 2, the second sedimentation tank 3, the third sedimentation tank 4 and the water pool 5 are all provided with four sets of rollers 6 for easy movement on the lower wall. The first sedimentation tank 2, the second sedimentation tank 3, the third sedimentation tank 4 and the water pool 5 can be provided with multiple sets. When there is too much silt at the bottom, it can be conveniently removed by the rollers 6 and replaced with a new pool, so that the dredging process is simplified. The area of ​​the water receiving pool 1 is larger than that of the first sedimentation tank 2, the second sedimentation tank 3, the third sedimentation tank 4 and the water pool 5, and it can be cleaned once in a long time, which has little effect on the overall purification cycle work; In order to separate the solid and liquid of the waste water containing waste residue entering the drum, the inside of the water receiving pool 1 is fixedly connected to the cover shell 9 by the bracket 8, and the inside of the cover shell 9 is rotatably connected to the drum, the drum is low on the left and high on the right, and the inner walls of the first drum 15, the second drum 16 and the third drum 17 are all provided with a plurality of groups of filter holes 25 for separating waste water and waste residue. The drum is composed of the first drum 15, the second drum 16 and the third drum 17, which are distributed from the inside to the outside in sequence. The end of the third drum 17 away from the turntable 28 is rotatably connected to the inner upper wall of the cover shell 9 through the third rotating seat 26. The third drum 17 and the second drum 16 and the second drum 16 and the third drum 17 are connected to the inner upper wall of the cover shell 9. Each roller 15 is supported and fixed by multiple groups of support rods 27, and the multiple groups of support rods 27 are all located at the end of the roller away from the turntable 28. The inner walls of the first roller 15, the second roller 16 and the third roller 17 are all provided with spiral grooves 24 that are consistent with the spiral direction of the spiral blades 23. Multiple groups of filter holes 25 are respectively arranged on the inner walls of the multiple groups of spiral grooves 24. The roller is arranged in a shape of low on the left and high on the right. When the roller rotates, the waste residue inside the roller moves to the right along the spiral grooves 24, and the wastewater and fine waste residue are discharged outward layer by layer from the filter holes 25. The right end of the roller is raised to prevent the wastewater from being discharged from the right end of the roller, thereby improving the solid waste separation efficiency. In order to separate waste residues of different particle sizes, the aperture of the filter holes 25 on the inner wall of the second drum 16 is smaller than that of the filter holes 25 on the inner wall of the first drum 15 and larger than that of the filter holes 25 on the inner wall of the third drum 17. Large particles, medium particles and small particles of waste residues are separated in turn through the filter holes 25 with different apertures. The specific aperture selection can be selected according to the needs of the work site. In order to discharge waste residues of different particle sizes separately, the ends of the first roller 15, the second roller 16 and the third roller 17 away from the turntable 28 are all extended to the right side of the water receiving pool 1 in a top view, and the length of the first roller 15 is greater than that of the second roller 16, and the length of the second roller 16 is greater than that of the third roller 17. Waste residues that cannot be discharged through the filter hole 25 in the first roller 15 are discharged from the right end of the first roller 15 along the spiral groove 24 on the inner side wall of the first roller 15. Waste residues that can be discharged through the filter hole 25 in the first roller 15 but cannot be discharged through the filter hole 25 in the second roller 16 are discharged from the right end of the second roller 16 along the spiral groove 24 on the inner side wall of the second roller 16. Waste residues that can be discharged through the filter holes 25 in the first roller 15 and the second roller 16 but cannot be discharged through the filter hole 25 in the third roller 17 are discharged from the right end of the third roller 17 along the spiral groove 24 on the inner side wall of the third roller 17. The different extension lengths of the right ends of the first roller 15, the second roller 16 and the third roller 17 enable waste residues of different particle sizes to be discharged separately. In order to allow the wastewater containing waste residue to smoothly enter the drum from the inlet pipe 12, the left end of the drum is fixedly connected with the inlet pipe 12, and the inner wall of the inlet pipe 12 is fixedly connected with a spiral blade 23 that is spirally coiled. After the wastewater containing waste residue enters the inlet pipe 12, when the inlet pipe 12 rotates, the spiral blade 23 is used to feed the wastewater containing waste residue into the drum for treatment; In order to drive the inlet pipe 12 and the roller to rotate, the left wall of the cover shell 9 is distributed up and down and is fixedly connected with the driving box 11 and the connecting box 10 in sequence. The end of the inlet pipe 12 away from the roller passes through the left wall of the cover shell 9, the right wall of the connecting box 10, and the left wall of the connecting box 10 in sequence and extends to the left side of the connecting box 10. A rotating driving structure for driving the inlet pipe 12 to rotate is arranged between the driving box 11 and the inlet pipe 12. The left ends of the first roller 15, the second roller 16 and the third roller 17 are commonly fixedly connected with a turntable 28. The right end of the inlet pipe 12 passes through the turntable 28 and is fixedly connected thereto. One end of the inlet pipe 12 passing through the turntable 28 extends into the interior of the first roller 15. A section of the outer wall of the inlet pipe 12 located inside the connecting box 10 is rotatably connected to the lower wall of the connecting box 10 through two sets of second rotating seats 21. The rotating driving structure includes a first gear 20, a second gear 2 2. The rotating shaft 19 and the motor 13. The motor 13 is fixedly connected to the side of the drive box 11 away from the cover 9. The motor 13 extends out of the shaft and penetrates the left wall of the drive box 11 and extends into the drive box 11. The rotating shaft 19 is fixedly connected to the end of the extended shaft of the motor 13 through the coupling 14. The end of the rotating shaft 19 away from the coupling 14 is rotatably connected to the inner right wall of the drive box 11 through the first rotating seat 18. The first gear 20 and the second gear 22 are respectively fixedly connected to the outer wall of the rotating shaft 19 and the outer wall of the inlet pipe 12. The first gear 20 and the second gear 22 are meshed with each other. After the motor 13 is started, the first gear 20 is driven to rotate through the rotating shaft 19. The first gear 20 drives the inlet pipe 12 to rotate by meshing with the second gear 22. The inlet pipe 12 is fixedly connected to the drum through the turntable 28. When the inlet pipe 12 rotates, it drives the drum to rotate synchronously.

[0020] Working principle: After the motor 13 is started, the first gear 20 is driven to rotate through the rotating shaft 19, and the first gear 20 drives the inlet pipe 12 to rotate by meshing with the second gear 22. The inlet pipe 12 is fixedly connected to the drum through the turntable 28. When the inlet pipe 12 rotates, it drives the drum to rotate synchronously. After the wastewater containing waste residue enters the inlet pipe 12, when the inlet pipe 12 rotates, it is fed through the spiral blade 23, and the wastewater containing waste residue is sent to the drum for treatment. Through the water receiving pool 1, the wastewater generated when the drum separates the waste residue and wastewater can be received to avoid flowing to the ground to cause pollution and waste. After the wastewater flows into the water receiving pool 1, it is overflowed. The wastewater flows into the first sedimentation tank 2, the second sedimentation tank 3, and the third sedimentation tank 4 one by one in a flow sedimentation manner until clean water is formed and flows into the water pool 5, and then the clean water in the water pool 5 is pumped to the previous process to participate in the coal washing operation by a high-pressure pump, so as to realize the recycling of wastewater. The first sedimentation tank 2, the second sedimentation tank 3, the third sedimentation tank 4 and the water pool 5 can be set in multiple groups. When there is too much silt at the bottom, it can be conveniently removed by the roller 6 and replaced with a new pool, which simplifies the dredging process. The area of ​​the water receiving pool 1 is larger than that of the first sedimentation tank 2, the second sedimentation tank 3, the third sedimentation tank 4 and the water pool 5, and can be cleaned once for a longer time, which is beneficial to the whole The solid waste separation efficiency is improved by raising the right end of the drum to avoid the discharge of waste water from the right end of the drum, and the large particles, medium particles and small particles of waste are separated in turn through the filter holes 25 with different apertures. The specific aperture selection can be selected according to the needs of the work site. The waste residue that cannot be discharged through the filter holes 25 in the first drum 15 is discharged from the first drum along the spiral groove 24 on the inner wall of the first drum 15. The waste residue that can be discharged through the filter holes 25 in the first roller 15 but cannot be discharged through the filter holes 25 in the second roller 16 is discharged from the right end of the second roller 16 along the spiral groove 24 on the inner wall of the second roller 16. The waste residue that can be discharged through the filter holes 25 in the first and second rollers 15 but cannot be discharged through the filter holes 25 in the third roller 17 is discharged from the right end of the third roller 17 along the spiral groove 24 on the inner wall of the third roller 17. The different extension lengths of the right ends of the first roller 15, the second roller 16 and the third roller 17 enable waste residues of different particle sizes to be discharged separately.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal mining waste slag and wastewater recycling and purification system, characterized by: The invention comprises a water receiving tank (1) and a high-pressure pump. The front wall of the water receiving tank (1) is provided with a first sedimentation tank (2), a second sedimentation tank (3), a third sedimentation tank (4) and a water pool (5) in sequence from the back to the front. The water pumping end of the high-pressure water pump is connected to the water pool (5). The inside of the water receiving tank (1) is fixedly connected to a cover shell (9) through a bracket (8). The inside of the cover shell (9) is rotatably connected to a roller. The roller is composed of a first roller (15), a second roller (16) and a third roller (17) which are distributed in sequence from the inside to the outside. The roller is in a shape with the left side lower and the right side higher. The left end of the roller is fixedly connected to an inlet pipe (12), the left wall of the housing (9) is sequentially fixedly connected with a drive box (11) and a connection box (10) in an upper and lower distribution, the end of the inlet pipe (12) away from the drum sequentially penetrates the left wall of the housing (9), the right wall of the connection box (10), and the left wall of the connection box (10) and extends to the left side of the connection box (10), a rotation drive structure for driving the inlet pipe (12) to rotate is provided between the drive box (11) and the inlet pipe (12), and the inner walls of the first drum (15), the second drum (16) and the third drum (17) are all provided with a plurality of groups of filter holes (25) for separating wastewater and waste residue.

2. A coal mining waste slag and wastewater recycling and purification system according to claim 1, characterized in that: The heights of the upper openings of the water receiving tank (1), the first sedimentation tank (2), the second sedimentation tank (3), the third sedimentation tank (4) and the water using tank (5) are successively reduced from the back to the front, and the front walls of the water receiving tank (1), the first sedimentation tank (2), the second sedimentation tank (3) and the third sedimentation tank (4) are all fixedly connected to a water diversion trough (7) extending forwards and close to the upper wall.

3. A coal mining waste slag and wastewater recycling and purification system according to claim 2, characterized in that: The lower walls of the first sedimentation tank (2), the second sedimentation tank (3), the third sedimentation tank (4) and the water tank (5) are all provided with four groups of rollers (6) for easy movement.

4. A coal mining waste slag and wastewater recycling and purification system according to claim 3, characterized in that: The left ends of the first roller (15), the second roller (16) and the third roller (17) are fixedly connected to a rotating disk (28); the right end of the inlet pipe (12) passes through the rotating disk (28) and is fixedly connected thereto; one end of the inlet pipe (12) passes through the rotating disk (28) and extends into the interior of the first roller (15).

5. A coal mining waste residue and wastewater recycling and purification system according to claim 4, characterized in that: One end of the third roller (17) away from the turntable (28) is rotatably connected to the inner upper wall of the cover shell (9) via a third rotating seat (26); the third roller (17) and the second roller (16) as well as the second roller (16) and the first roller (15) are supported and fixed via a plurality of groups of support rods (27); the plurality of groups of support rods (27) are all located at the end of the roller away from the turntable (28).

6. A coal mining waste residue and wastewater recycling and purification system according to claim 5, characterized in that: A section of the outer wall of the inlet pipe (12) located inside the connection box (10) is rotatably connected to the lower wall of the connection box (10) via two sets of second rotating seats (21), and a spiral blade (23) wound in a spiral shape is fixedly connected to the inner wall of the inlet pipe (12).

7. A coal mining waste residue and wastewater recycling and purification system according to claim 6, characterized in that: The inner side walls of the first roller (15), the second roller (16) and the third roller (17) are all provided with spiral grooves (24) in the same spiral direction as the spiral blades (23), and the plurality of groups of filter holes (25) are respectively provided on the inner side walls of the plurality of groups of spiral grooves (24).

8. The coal mining waste slag and wastewater recycling and purification system according to claim 7 is characterized by: The diameter of the filter holes (25) on the inner wall of the second drum (16) is smaller than the diameter of the filter holes (25) on the inner wall of the first drum (15) and larger than the diameter of the filter holes (25) on the inner wall of the third drum (17).

9. A coal mining waste residue and wastewater recycling and purification system according to claim 8, characterized in that: In a top view, the ends of the first roller (15), the second roller (16) and the third roller (17) that are away from the rotating disk (28) all extend to the right side of the water receiving pool (1); the length of the first roller (15) is greater than that of the second roller (16), and the length of the second roller (16) is greater than that of the third roller (17).

10. A coal mining waste residue and wastewater recycling and purification system according to claim 9, characterized in that: The rotary drive structure comprises a first gear (20), a second gear (22), a rotating shaft (19) and a motor (13); the motor (13) is fixedly connected to a side of the drive box (11) away from the cover (9); a shaft extending from the motor (13) passes through a left wall of the drive box (11) and extends into the interior of the drive box (11); the rotating shaft (19) is fixedly connected to an end of the shaft extending from the motor (13) via a coupling (14); an end of the rotating shaft (19) away from the coupling (14) is rotatably connected to an inner right wall of the drive box (11) via a first rotating seat (18); the first gear (20) and the second gear (22) are fixedly connected to an outer wall of the rotating shaft (19) and an outer wall of the inlet pipe (12), respectively; and the first gear (20) and the second gear (22) are meshed with each other.

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