Rainwater efficient recycling device for open-pit coal mine

Abstract

The utility model relates to a kind of open coal mine rainwater efficient recycling device, belong to rainwater recycling technical field;Including rainwater collection pond, efficient full-automatic water purification device, intermediate water pool, clean water pool, high-speed filter, sludge pool, photovoltaic panel, switch board;Rainwater collection pond is connected with efficient full-automatic water purification device and intermediate water pool by primary booster pump;Efficient full-automatic water purification device is connected with intermediate water pool and sludge pool;Sludge pool is connected with sludge dewaterer by sludge pump;Intermediate water pool is connected with high-speed filter by secondary booster pump, high-speed filter is connected with clean water pool and photovoltaic panel washing device, clean water pool is internally provided with clean water pump, photovoltaic panel is connected with switch board, and photovoltaic panel is cleaned by photovoltaic panel washing device;Switch board is connected with primary booster pump, secondary booster pump, clean water pump and sludge pump;Solve the problem that current collected rainwater cannot be efficiently recycled.

Description

Technical Field

[0001] This utility model belongs to the field of rainwater reuse technology, specifically relating to an efficient rainwater recycling device for open-pit coal mines. Background Technology

[0002] The field of efficient rainwater recycling in open-pit coal mines faces several challenges. Firstly, the large, dispersed collection area of ​​rainwater in open-pit mines makes centralized treatment difficult. Secondly, the rainwater contains a significant amount of fly ash, requiring multiple treatment processes before it can be used harmlessly, further reducing the overall efficiency of rainwater utilization.

[0003] Existing patents focus on solving the problem of rainwater harvesting and are not applicable to the collection and utilization of rainwater in open-pit coal mines.

[0004] For example, CN220184228U discloses a seepage-proof and corrosion-resistant rainwater tank, belonging to the field of chemical production technology, which solves the problem of poor seepage-proof and corrosion-resistant performance of existing polluted rainwater tanks in chemical enterprises. This rainwater tank includes a tank body, with the bottom layer consisting of, from bottom to top, a compacted original soil layer, a cushion layer, a reinforced concrete base slab layer, a seepage-proof coating, an isolation layer, and a mortar layer; the tank wall consists of, from the outside to the inside, a compacted backfill layer, a reinforced concrete wall panel layer, a seepage-proof coating, a partial leveling layer, an isolation layer, and a flake coating. This rainwater tank has a reasonable structure and is simple to construct. Both the bottom and walls of the tank adopt a multi-layer composite structure, combined with the use of various seepage-proof and corrosion-resistant material layers, thus giving the rainwater tank excellent seepage-proof and corrosion-resistant performance. This not only eliminates leakage problems but also extends the service life of the rainwater tank, providing referable technical experience for the construction of similar projects. However, this patent does not solve the problem of efficient recycling of collected rainwater. Utility Model Content

[0005] This invention overcomes the shortcomings of existing technologies and proposes an efficient rainwater recycling device for open-pit coal mines, solving the problem that collected rainwater cannot be efficiently recycled and utilized.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0007] An efficient rainwater recycling device for open-pit coal mines includes a rainwater collection tank, a high-efficiency fully automatic water purification device, an intermediate water tank, a clear water tank, a high-speed filter, a sludge tank, photovoltaic panels, and a power distribution cabinet. The rainwater collection tank is connected to the high-efficiency fully automatic water purification device and the intermediate water tank via a primary booster pump. The high-efficiency fully automatic water purification device is connected to the intermediate water tank and the sludge tank. The sludge tank is connected to a sludge dewatering machine via a sludge pump. The intermediate water tank is connected to the high-speed filter via a secondary booster pump. The high-speed filter is connected to the clear water tank and a photovoltaic panel washing device. A clear water pump is installed inside the clear water tank. The photovoltaic panels are connected to the power distribution cabinet and are cleaned by the photovoltaic panel washing device. The power distribution cabinet is connected to the primary booster pump, the secondary booster pump, the clear water pump, and the sludge pump.

[0008] Furthermore, the primary booster pump is installed inside the rainwater collection tank, and a rainwater delivery pipe is installed at the output end of the primary booster pump. The rainwater delivery pipe is connected to the high-efficiency fully automatic water purification device and the intermediate water tank.

[0009] Furthermore, a PAC mixing tank and a PAM mixing tank are sequentially installed on the rainwater delivery pipe. The rainwater delivery pipe before the PAC mixing tank is connected to the PAC dosing device through the PAC delivery pipe, and the rainwater delivery pipe before the PAM mixing tank is connected to the first PAM dosing device through the first PAM delivery pipe.

[0010] Furthermore, the outlet of the high-efficiency fully automatic water purification device is connected to the intermediate water tank through the first clean water delivery pipe, and the sludge outlet of the high-efficiency fully automatic water purification device is connected to the sludge tank through the first sludge discharge pipe.

[0011] Furthermore, the secondary booster pump is installed inside the intermediate water tank, and the output end of the secondary booster pump is connected to the inlet of the high-speed filter through the filter inlet pipe; the clean water outlet of the high-speed filter is connected to the clean water tank through the second clean water delivery pipe.

[0012] Furthermore, the clear water tank is connected to the NaClO solution tank via a NaClO delivery pipe.

[0013] Furthermore, the clean water pump is installed inside the clean water tank, and the output end of the clean water pump is equipped with a clean water external supply pipe and a backwash main pipe; the outlet end of the backwash main pipe is equipped with a filter backwash pipe and a photovoltaic panel flushing pipe; the filter backwash pipe is connected to the backwash inlet of the high-speed filter, the backwash outlet of the high-speed filter is connected to the rainwater collection tank through the backwash drain pipe, and the photovoltaic panel flushing pipe is connected to the photovoltaic panel cleaning device.

[0014] Furthermore, the sludge pump is installed inside the sludge tank, and a second sludge discharge pipe is provided at the output end of the sludge pump. The second sludge discharge pipe is connected to the sludge dewatering machine. A PAM mixing device is installed on the second sludge discharge pipe, and the PAM mixing device is connected to a second PAM dosing device through a second PAM conveying pipe.

[0015] Furthermore, the photovoltaic panels are connected to the controller via cables, the controller is connected to the inverter via cables, the inverter is connected to the metering and switching controller via cables, the metering and switching controller is connected to the public grid, the power storage station, and the distribution cabinet via cables, and the distribution cabinet is connected to the power storage station via cables.

[0016] Furthermore, magnetic level gauges are installed inside the rainwater collection tank, intermediate tank, clear water tank, and sludge tank.

[0017] The beneficial effects of this utility model compared to the prior art are as follows: This invention provides a high-efficiency rainwater recycling device for open-pit coal mines, solving the problem of rational and efficient utilization of rainwater from open-pit mines and reducing its pollution. The collected rainwater is processed through a high-efficiency fully automatic water purification device, a high-speed filter, and chemical treatment to obtain usable clean water. All the power required is provided by a distributed photovoltaic system, making rational use of clean energy and solving the problem of electricity shortages in remote rainwater treatment systems.

[0018] This invention can be widely applied to the efficient recycling and utilization of rainwater in open-pit coal mines. The collected rainwater can be comprehensively utilized, with a recoverable volume of approximately 400,000 m³, while simultaneously generating approximately 364,000 kWh of electricity. Considering economic benefits, at a cost of 0.5 yuan per kWh of electricity, this would generate 182,000 yuan in economic benefits annually; and at 2.5 yuan per ton of water, this would generate approximately 1 million yuan in economic benefits annually, for a total economic benefit of approximately 1,182,000 yuan. Therefore, this project's technology has significant application value and social benefits. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the entire utility model; Among them, 1 is a rainwater collection tank, 2 is a backwash drain pipe, 3 is a primary lift pump, 4 is a rainwater delivery pipe, 5 is a PAC mixing tank, 6 is a PAC delivery pipe, 7 is a PAC dosing device, 8 is a PAM mixing tank, 9 is a first PAM delivery pipe, 10 is a first PAM dosing device, 11 is a high-efficiency fully automatic water purification device, 12 is a first clean water delivery pipe, 13 is a first sludge discharge pipe, 14 is an intermediate water tank, 15 is a secondary lift pump, 16 is a filter inlet pipe, 17 is a high-speed filter, 18 is a filter backwash pipe, 19 is a backwash main pipe, and 20 is a high-speed filter. 21 is a clean water supply pipe, 22 is a clean water pump, 23 is a clean water tank, 24 is a NaClO delivery pipe, 25 is a NaClO solution tank, 26 is a sludge dewatering machine, 27 is a second sludge discharge pipe, 28 is a second PAM dosing device, 29 is a PAM mixing device, 30 is a second PAM delivery pipe, 31 is a sludge pump, 32 is a photovoltaic panel, 33 is a controller, 34 is an inverter, 35 is a metering and switching controller, 36 is a cable, 37 is a power distribution cabinet, 38 is a power storage station, 39 is a photovoltaic panel flushing device, and 40 is a second clean water delivery pipe. Detailed Implementation

[0020] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. The technical solution of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0021] like Figure 1 As shown, this utility model provides a high-efficiency rainwater recycling device for open-pit coal mines, including a rainwater collection tank 1, a high-efficiency fully automatic water purification device 11, an intermediate water tank 14, a clear water tank 22, a high-speed filter 17, a sludge tank 31, a photovoltaic panel 32, and a power distribution cabinet 37; the rainwater collection tank 1 is connected to the high-efficiency fully automatic water purification device 11 and the intermediate water tank 14 via a primary booster pump 3; the high-efficiency fully automatic water purification device 11 is connected to the intermediate water tank 14 and the sludge tank 31; the sludge tank 31 is connected to... The sludge pump 30 is connected to the sludge dewatering machine 25; the intermediate water tank 14 is connected to the high-speed filter 17 via the secondary lift pump 15, the high-speed filter 17 is connected to the clear water tank 22 and the photovoltaic panel washing device 39, the clear water tank 22 is equipped with a clear water pump 21, the photovoltaic panel 32 is connected to the power distribution cabinet 37, and the photovoltaic panel 32 is cleaned by the photovoltaic panel washing device 39; the power distribution cabinet 37 is connected to the primary lift pump 3, the secondary lift pump 15, the clear water pump 21 and the sludge pump 30.

[0022] The primary booster pump 3 is installed inside the rainwater collection tank 1. A rainwater delivery pipe 4 is installed at the output end of the primary booster pump 3, and the rainwater delivery pipe 4 is connected to the high-efficiency fully automatic water purification device 11 and the intermediate water tank 14. A PAC mixing tank 5 and a PAM mixing tank 8 are sequentially installed on the rainwater delivery pipe 4. The rainwater delivery pipe 4 before the PAC mixing tank 5 is connected to the PAC dosing device 7 through a PAC delivery pipe 6, and the rainwater delivery pipe 4 before the PAM mixing tank 8 is connected to the first PAM dosing device 10 through a first PAM delivery pipe 9. Rainwater can be selectively delivered to the high-efficiency fully automatic water purification device 11 or the intermediate water tank 14 through the rainwater delivery pipe 4.

[0023] The outlet of the high-efficiency fully automatic water purification device 11 is connected to the intermediate water tank 14 via the first clean water delivery pipe 12, and the sludge outlet of the high-efficiency fully automatic water purification device 11 is connected to the sludge tank 31 via the first sludge discharge pipe 13. A secondary booster pump 15 is installed inside the intermediate water tank 14, and the output end of the secondary booster pump 15 is connected to the inlet of the high-speed filter 17 via the filter inlet pipe 16. The clean water outlet of the high-speed filter 17 is connected to the clean water tank 22 via the second clean water delivery pipe 40. The clean water tank 22 is connected to the NaClO solution tank 24 via the NaClO delivery pipe 23.

[0024] The clean water pump 21 is installed inside the clean water tank 22. The output end of the clean water pump 21 is equipped with a clean water external supply pipe 20 and a backwash main pipe 19. The outlet end of the backwash main pipe 19 is equipped with a filter backwash pipe 18 and a photovoltaic panel flushing pipe. The filter backwash pipe 18 is connected to the backwash inlet of the high-speed filter 17, and the backwash outlet of the high-speed filter 17 is connected to the rainwater collection tank 1 via a backwash drain pipe 2. The photovoltaic panel flushing pipe is connected to the photovoltaic panel 32 cleaning device.

[0025] The sludge pump 30 is installed inside the sludge tank 31. The output end of the sludge pump 30 is provided with a second sludge discharge pipe 26, which is connected to the sludge dewatering machine 25. A PAM mixing device 28 is installed on the second sludge discharge pipe 26, and the PAM mixing device 28 is connected to a second PAM dosing device 27 through a second PAM delivery pipe 29.

[0026] Photovoltaic panel 32 is connected to controller 33 via cable 36. Controller 33 is connected to inverter 34 via cable 36. Inverter 34 is connected to metering and switching controller 35 via cable 36. Metering and switching controller 35 is connected to the public grid, power storage station 38, and distribution cabinet 37 via cables 36. Distribution cabinet 37 is connected to power storage station 38 via cable 36. Distribution cabinet 37 is connected to primary booster pump 3, secondary booster pump 15, clean water pump 21, and sludge pump 30 via cables 36.

[0027] The rainwater collection tank 1, intermediate tank, clear water tank 22, and sludge tank 31 are all equipped with magnetic level gauges. All magnetic level gauges are connected to the corresponding pumps. When the level in the tank is detected to be lower than the set value, the pumps stop running.

[0028] The working principle of this utility model is as follows: Rainwater collected in the rainwater collection tank 1 is pumped out by a primary booster pump 3. The pumped rainwater undergoes PAC and PAM dosing sequentially before being selectively pumped into a high-efficiency fully automatic water purification system or an intermediate water tank 14. If the rainwater contains excessive sludge, it is pumped into a high-efficiency fully automatic water purification device 11. After separation by the device, clean water enters the intermediate water tank 14 through the first clean water delivery pipe 12, while sludge enters the sludge tank 31 through the second sludge discharge pipe 26. If the rainwater contains relatively little sludge, it is directly discharged into the intermediate water tank 14.

[0029] Water from the intermediate water tank 14 is pumped into the high-speed filter 17 via the secondary booster pump 15. After filtration by the high-speed filter 17, the water enters the clean water tank 22 through the second clean water delivery pipe 40. NaClO solution is injected into the clean water tank 22 through the NaClO solution tank 24. The clean water from the clean water tank 22 is pumped out through the clean water pump 21. The clean water can be directly supplied to meet the water needs of the external environment through the clean water external supply pipe 20, or it can enter the filter backwash pipe 18 and the photovoltaic panel flushing pipe through the backwash main pipe 19.

[0030] Clean water is injected into the high-speed filter 17 through the filter backwash pipe 18 for backwashing. The dirty water after backwashing flows back into the rainwater collection tank 1 through the backwash drain pipe 2.

[0031] Clean water is introduced into the photovoltaic panel rinsing device 39 through the photovoltaic panel rinsing pipe, and the photovoltaic panel 32 is cleaned by the photovoltaic panel rinsing device 39, thereby ensuring the working efficiency of the photovoltaic panel 32.

[0032] The sludge collected inside the sludge tank 31 is pumped out by the sludge pump 30. After being doped with PAM, the pumped sludge enters the sludge dewatering machine 25 for dewatering.

[0033] The electricity generated by the photovoltaic panel 32 is fed into the inverter 34 through the controller 33, and then supplied to the recycling device by the metering and switching controller 35. When the recycling device stops operating, it supplies electricity to the power storage station 38. After the power storage station 38 is fully charged, it supplies electricity to the public grid. When the electricity generated by the photovoltaic panel 32 cannot meet the needs of the rainwater treatment system, it is supplied by the power storage station 38.

[0034] The pipe material should be determined according to the type of medium, temperature, and pressure. In this embodiment, the medium in the pipe belongs to Class D fluid (referring to non-flammable, non-toxic fluid with a design pressure less than or equal to 1.0 MPa and a design temperature between -20 and 186°C). When the thickness of the 20mm seamless steel pipe is less than or equal to 15mm, σb is 390MPa and σs is 245MPa. The pipe material selected in this embodiment is 20mm seamless steel pipe. The pipe diameter should be determined according to factors such as the type of medium, flow rate, and specific friction resistance. In this embodiment, the rainwater conveying pipe 4 and backwash drainage pipe 2 connected to the rainwater collection tank 1 are both φ152×4.0. The treated first clean water conveying pipe 12, filter inlet pipe 16, second clean water conveying pipe 40, backwash main pipe 19, clean water external supply pipe 20, and NaClO conveying pipe 23 are all φ102×3.5. The first sludge discharge pipe 13 and the second sludge discharge pipe 26 are both φ152×4.0. All pipelines of the dosing device are made of stainless steel pipe (S304) φ50×1.5.

[0035] Cable 36 is a copper core cross-linked polyethylene insulated PVC sheathed power cable 36 (YJV). The specifications of cable 36 are determined according to the load. Cable 36 from photovoltaic panel 32 to distribution cabinet 37 is (YJV-3×185+1×95mm²), cable 36 from distribution cabinet 37 to primary booster pump 3 is (YJV-3×4+1×4mm²), cable 36 from distribution cabinet 37 to secondary booster pump 15 is (YJV-3×16+1×16mm²), cable 36 from distribution cabinet 37 to sludge pump 30 is (YJV-3×4+1×4mm²), and cable 36 from distribution cabinet 37 to clean water pump 21 is (YJV-3×6+1×6mm²).

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-efficiency rainwater recycling device for open-pit coal mines, characterized in that: The system includes a rainwater collection tank (1), a high-efficiency fully automatic water purification device (11), an intermediate water tank (14), a clear water tank (22), a high-speed filter (17), a sludge tank (31), photovoltaic panels (32), and a power distribution cabinet (37). The rainwater collection tank (1) is connected to the high-efficiency fully automatic water purification device (11) and the intermediate water tank (14) via a primary booster pump (3). The high-efficiency fully automatic water purification device (11) is connected to the intermediate water tank (14) and the sludge tank (31). The sludge tank (31) is connected to the sludge dewatering machine (25) via a sludge pump (30). The intermediate water tank (14) is connected to the high-speed filter (17) via the secondary booster pump (15). The high-speed filter (17) is connected to the clear water tank (22) and the photovoltaic panel washing device (39). The clear water tank (22) is equipped with a clear water pump (21). The photovoltaic panel (32) is connected to the power distribution cabinet (37). The photovoltaic panel (32) is cleaned by the photovoltaic panel washing device (39). The power distribution cabinet (37) is connected to the primary booster pump (3), the secondary booster pump (15), the clear water pump (21), and the sludge pump (30).

2. The high-efficiency rainwater recovery and utilization device for open-pit coal mines according to claim 1, characterized in that: The primary booster pump (3) is installed inside the rainwater collection tank (1). A rainwater delivery pipe (4) is installed at the output end of the primary booster pump (3). The rainwater delivery pipe (4) is connected to the high-efficiency fully automatic water purification device (11) and the intermediate water tank (14).

3. The high-efficiency rainwater recovery and utilization device for open-pit coal mines according to claim 2, characterized in that: A PAC mixing tank (5) and a PAM mixing tank (8) are sequentially installed on the rainwater conveying pipe (4). The rainwater conveying pipe (4) before the PAC mixing tank (5) is connected to the PAC dosing device (7) through the PAC conveying pipe (6). The rainwater conveying pipe (4) before the PAM mixing tank (8) is connected to the first PAM dosing device (10) through the first PAM conveying pipe (9).

4. The high-efficiency rainwater recovery and utilization device for open-pit coal mines according to claim 1, characterized in that: The outlet of the high-efficiency fully automatic water purification device (11) is connected to the intermediate water tank (14) through the first clean water conveying pipe (12), and the sludge outlet of the high-efficiency fully automatic water purification device (11) is connected to the sludge tank (31) through the first sludge discharge pipe (13).

5. The high-efficiency rainwater recovery and utilization device for open-pit coal mines according to claim 1, characterized in that: The secondary booster pump (15) is installed inside the intermediate water tank (14). The output end of the secondary booster pump (15) is connected to the inlet of the high-speed filter (17) through the filter inlet pipe (16). The clean water outlet of the high-speed filter (17) is connected to the clean water tank (22) through the second clean water delivery pipe (40).

6. The high-efficiency rainwater recovery and utilization device for open-pit coal mines according to claim 1, characterized in that: The clear water tank (22) is connected to the NaClO solution tank (24) through the NaClO delivery pipe (23).

7. The high-efficiency rainwater recovery and utilization device for open-pit coal mines according to claim 1, characterized in that: The clean water pump (21) is installed inside the clean water tank (22). The output end of the clean water pump (21) is equipped with a clean water external supply pipe (20) and a backwash main pipe (19). The outlet end of the backwash main pipe (19) is equipped with a filter backwash pipe (18) and a photovoltaic panel flushing pipe. The filter backwash pipe (18) is connected to the backwash inlet of the high-speed filter (17). The backwash outlet of the high-speed filter (17) is connected to the rainwater collection tank (1) through the backwash drain pipe (2). The photovoltaic panel flushing pipe is connected to the photovoltaic panel (32) cleaning device.

8. The high-efficiency rainwater recovery and utilization device for open-pit coal mines according to claim 1, characterized in that: The sludge pump (30) is installed inside the sludge tank (31). The output end of the sludge pump (30) is provided with a second sludge discharge pipe (26), which is connected to the sludge dewatering machine (25). A PAM mixing device (28) is installed on the second sludge discharge pipe (26), which is connected to the second PAM dosing device (27) through a second PAM conveying pipe (29).

9. The high-efficiency rainwater recovery and utilization device for open-pit coal mines according to claim 1, characterized in that: The photovoltaic panel (32) is connected to the controller (33) via cable (36), the controller (33) is connected to the inverter (34) via cable (36), the inverter (34) is connected to the metering and switching controller (35) via cable (36), the metering and switching controller (35) is connected to the public grid, the power storage station (38), and the distribution cabinet (37) via cable (36), respectively, and the distribution cabinet (37) is connected to the power storage station (38) via cable (36).

10. The high-efficiency rainwater recovery and utilization device for open-pit coal mines according to claim 1, characterized in that: Magnetic level gauges are installed inside the rainwater collection tank (1), intermediate tank, clear water tank (22), and sludge tank (31).

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