A water pollution treatment device and system for a coal mine water supply pumping station

Abstract

This invention discloses a water pollution treatment device and system for coal mine water supply pumping stations, belonging to the field of environmental protection equipment manufacturing. The invention heats mine water to a preset temperature using a preheating unit; it then uses a batching unit to disperse and dissolve flocculant powder in water heated to the preset temperature to form a solution. The heated mine water and the flocculant solution are thoroughly stirred and reacted in a mixing and reaction unit, causing impurities in the mine water to destabilize and aggregate, forming larger-diameter flocs. These flocs are then discharged into a sedimentation tank for settling, thereby removing suspended solids and turbidity from the mine water. This system solves the problem of weakened flocculant effectiveness and increased flocculant dosage due to lower mine water temperatures.

Description

Technical Field

[0001] This invention relates to the field of manufacturing special equipment for environmental protection, and in particular to a water pollution treatment device and system for a coal mine water supply pumping station. Background Technology

[0002] Coal mining generates a large amount of mine water. Mine water pollution can be categorized into mineral pollution, organic pollution, and bacterial pollution. Mineral pollution includes sand, mud particles, mineral impurities, dust, dissolved salts, acids, and alkalis; organic pollution includes coal particles, grease, biological metabolic products, wood, and the oxidative decomposition products of other substances. Furthermore, due to pollution from loose ore powder, coal powder, rock powder, and associated minerals scattered during mining and transportation, mine water appears grayish-black, turbid, with an oily film floating on the surface, and emits a slight fishy or oily odor.

[0003] Furthermore, mine water is characterized by high suspension levels, with suspended solids exhibiting small particle size, low specific gravity, and slow settling velocity; some of the fine colloids formed cannot settle naturally. In practical engineering, flocculants are typically added to mine water to destabilize and aggregate impurities, forming larger flocs, which are then settled in a sedimentation tank to remove suspended solids and turbidity. The effectiveness of flocculants is significantly affected by temperature; higher water temperatures improve flocculation, while lower temperatures necessitate increased flocculant dosage. Experience suggests that the reaction temperature for flocculants is generally controlled between 20-30℃. In existing technologies, during cold winters, the lower mine water temperature significantly reduces flocculant effectiveness, requiring increased dosage. Therefore, further improvements to related water pollution treatment equipment are necessary. Summary of the Invention

[0004] The purpose of this invention is to provide a water pollution treatment device and system for coal mine water supply pumping stations, which at least solves the problem that the flocculant effect is weakened and the dosage is increased due to the low temperature of mine water.

[0005] The technical solution adopted in this invention is as follows:

[0006] In a first aspect, the present invention provides a water pollution treatment device for a coal mine water supply pumping station, comprising a preheating unit, a batching unit, a mixing and reaction unit, and a sedimentation tank; the preheating unit is used to heat the mine water to a first preset temperature; the batching unit is used to disperse and dissolve flocculant powder in water heated to a second preset temperature to prepare a solution; the mine water heated to the first preset temperature and the flocculant solution prepared to the second preset temperature are fed into the mixing and reaction unit for stirring and reaction; and then discharged into the sedimentation tank for sedimentation.

[0007] Secondly, the present invention provides a water pollution treatment system that uses the coal mine water supply pump station water pollution treatment device described above to treat mine water as follows: the mine water is fed into a preheating unit and heated to a first preset temperature; flocculant powder is fed into a batching unit and dispersed and dissolved in water heated to a second preset temperature to prepare a solution; the mine water heated to the first preset temperature and the flocculant solution prepared to the second preset temperature are fed into a mixing reaction unit and stirred to react; and then discharged into a sedimentation tank for sedimentation.

[0008] The beneficial effects of this invention are as follows: This invention provides a water pollution treatment device and system for coal mine water supply pumping stations. The invention heats mine water to a preset temperature using a preheating unit; it disperses and dissolves flocculant powder in water heated to the preset temperature using a batching unit to prepare a solution; the mine water heated to the preset temperature and the flocculant solution are thoroughly stirred and reacted in a mixing and reaction unit, causing impurities in the mine water to destabilize and aggregate, forming larger-diameter flocs; these are then discharged into a sedimentation tank for sedimentation, thereby achieving the purpose of removing suspended solids and turbidity from the mine water. This system can solve the problem that the flocculant effect is weakened and the dosage increases due to the low temperature of the mine water. Attached Figure Description

[0009] Figure 1 The diagram shown is a structural block diagram of the water pollution treatment device of the present invention.

[0010] Figure 2 The image shown is a three-dimensional structural diagram of a water pollution treatment device according to the present invention.

[0011] Figure 3 The diagram shown is a detailed structural representation of the second frame of the present invention.

[0012] Figure 4 The diagram shown is a schematic representation of the connection structure of the first screw conveyor of the present invention.

[0013] Figure 5 The image shown is a partial cross-section of the internal structure of a preheating tank according to the present invention.

[0014] Figure 6 The diagram shown is a structural illustration of the batching unit of the present invention.

[0015] Figure 7 The figure shown is a cross-sectional view of the improved dispersion and dissolution vessel of the present invention.

[0016] Figure 8 The diagram shown is a schematic representation of the internal structure of a hot water chamber according to the present invention.

[0017] Figure 9 The image shown is a diagram illustrating the top structure of the central tube of this invention.

[0018] Figure 10 The diagram shown is an illustration of the internal structure of the powder conveying pipe of the present invention.

[0019] Figure 11 The diagram shown is a schematic representation of the connection structure of the guide tube of the present invention.

[0020] Figure 12 The diagram shown is a structural illustration of the inner wall cleaning mechanism of this invention.

[0021] Figure 13 The diagram shown is a schematic of the initial position of the high-pressure nozzle of the present invention.

[0022] Figure 14 The diagram shows the internal structure of the intermediate and lower chambers within the dispersion and dissolution vessel of this invention. Figure 1 .

[0023] Figure 15 The diagram shows the internal structure of the intermediate and lower chambers within the dispersion and dissolution vessel of this invention. Figure 2 .

[0024] Figure 16 The diagram shown is a representation of the internal structure of the premixing device of the present invention.

[0025] Figure 17 The diagram shown is a structural illustration of a sedimentation tank provided by the present invention.

[0026] Explanation of reference numerals in the attached drawings: Preheating unit 1, preheating tank 1.1, first discharge valve 1.2, first screw conveyor 1.3, first inlet pipe 1.4, first delivery pump 1.5, first drain pipe 1.6, first drain valve 1.7; First stirring shaft 1.8, first drive motor 1.9, first connecting rod 1.10, first screw blade 1.11, first baffle plate 1.12, first stirring blade 1.13, first delivery pipe 1.14, second delivery pump 1.15; Batching unit 2, storage hopper 2.1, screw feeder 2.2, dispersion and dissolution tank 2.3, upper chamber 2.4, intermediate chamber 2.5, lower chamber 2.6, central pipe 2 2.7, Annular partition; 2.8, Hot water chamber; 2.9, Cold water chamber; 2.10, Water passage hole; 2.11, Cold water inlet; 2.12, Water supply pipe; 2.13, Diverter plate; 2.14, Electric heating tube; 2.15, Heat-conducting fins; 2.16, Spray plate; 2.17, Spray receiving chamber; 2.18, Water suction pipe; 2.19, Submersible pump; 2.20, Powder conveying pipe; 2.21, First connecting pipe; 2.22, Guide pipe; 2.23, Annular air spray pipe; 2.24, Third unloading valve; 2.25, Third screw conveyor; 2.26, Powder dispersion drive motor; 2.27, Rotating shaft; 2.28, Fan blades; 2.29, Spreading blades; 2.30, Flow guide. Cover 2.31; First telescopic rod 2.32, high-pressure nozzle 2.33, water storage box 2.34, water pumping branch pipe 2.35, solenoid valve 2.36, flexible water delivery pipe 2.37; Drive gear 2.38, driven gear disk 2.39, geared motor 2.40, track groove 2.41, connecting column 2.42, stirring support frame 2.43, second stirring blade 2.44, first support rod 2.45, central shaft 2.46, dispersing head 2.47, second support rod 2.48, second spiral blade 2.49, third support rod 2.50, third stirring blade 2.51; Mixing reaction unit 3, mixing reaction tank 3.1, second discharge valve 3 2. Second screw conveyor; 3.3. Second drain pipe; 3.4. Second drain valve; 3.5. Sedimentation tank; 4. Sedimentation tank; 4.1. Sludge tank; 4.2. Flocculation sedimentation tank; 4.3. Flocculation supernatant storage tank; 4.4. Flocculation supernatant filtration tank; 5. Premixing device; 5.1. Premixing shell; 5.2. Distributing plate; 5.3. First chamber; 5.4. Second chamber; 5.5. Fourth chamber; 5.6. First impeller; 5.7. First frame; 6.1. First working platform; 6.2. Second working platform; 6.3. First staircase; 6.4. Second staircase; 7. Second frame; 8. Guide box; 9. Cylinder support plate; 10. First top plate; 11. Insulated space. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] To address the problem of weakened flocculant effectiveness and increased flocculant dosage due to low mine water temperature, this invention first provides a water pollution treatment device for coal mine water supply pumping stations. (See also...) Figure 1The diagram shows the structural block diagram of the water pollution treatment device of the present invention. The water pollution treatment device of the present invention mainly includes a preheating unit 1, a batching unit 2, a mixing and reaction unit 3, and a sedimentation tank 4. The preheating unit 1 is used to heat the mine water to a preset temperature, for example, to 20-30°C. The batching unit 2 is used to disperse and dissolve flocculant powder in water heated to the preset temperature to prepare a solution, for example, heating the water to 20-30°C to disperse and dissolve the flocculant powder. The mine water heated to the preset temperature and the flocculant solution are thoroughly stirred and reacted in the mixing and reaction unit 3, causing the impurity particles in the mine water to destabilize and aggregate, forming flocs with larger diameters. The mixture is then discharged into the sedimentation tank 4 for sedimentation, thereby achieving the purpose of removing suspended solids and turbidity from the mine water.

[0032] See Figure 2 The diagram shown is a three-dimensional structural representation of a water pollution treatment device according to the present invention. In one specific embodiment, the water pollution treatment device further includes a first frame 6, which is a steel frame structure. The first frame 6 includes adjacent first working platforms 6.1 and second working platforms 6.2, wherein the first working platform 6.1 is located in front of the second working platform 6.2, and the height of the first working platform 6.1 is lower than that of the second working platform 6.2. A first staircase 6.3 is provided at the front edge of the first working platform 6.1, allowing access from the ground to the first working platform 6.1; a second staircase 6.4 is provided between the first working platform 6.1 and the second working platform 6.2, allowing access from the first working platform 6.1 to the second working platform 6.2.

[0033] In one specific embodiment of the present invention, a preheating unit 1 and a mixing and reaction unit 3 are installed on a second frame 7 below the first working platform 6.1, and a batching unit 2 is installed on the second working platform 6.2; a sedimentation tank 4 is installed underground below the first frame 6. This three-dimensional layout can significantly reduce the floor space required.

[0034] See Figure 3 The diagram shown is a detailed structural representation of the second frame 7 of the present invention. In one specific embodiment of the present invention, the second frame 7 includes two symmetrically arranged cuboid-shaped flow guide boxes 8, each covered with a heat-insulating plate; a cylindrical support plate 9 is horizontally arranged between the two flow guide boxes 8, and a first top plate 10 is provided on the top of the two flow guide boxes 8; a heat-insulating space 11 is formed between the two flow guide boxes 8, the cylindrical support plate 9, and the first top plate 10, and the heat-insulating space 11 is enclosed by heat-insulating plates at the front and back. Figure 3 The front insulation panel was removed.

[0035] like Figure 3 As shown in the figure, in one specific embodiment of the present invention, the preheating unit 1 includes a preheating tank 1.1 and a first screw conveyor 1.3. Figure 3 In the illustrated embodiment, the preheating tank 1.1 is located inside the insulated space 11 on the right side; the preheating tank 1.1 consists of an upper cylindrical body and a lower conical hopper; a top cover is provided on the top of the cylindrical body, and the bottom outlet of the conical hopper is connected to a first discharge valve 1.2, which can be a star-shaped discharge valve; the bottom outlet of the first discharge valve 1.2 is connected to the inlet of the first screw conveyor 1.3, and the outlet of the first screw conveyor 1.3 is connected to the underground sedimentation tank 4. Figure 4 The diagram shown is a schematic representation of the connection structure of the first screw conveyor 1.3 of this invention. Figure 3 As shown, the top side of the preheating tank 1.1 is connected to the first inlet pipe 1.4 via the first inlet pump 1.5, which pumps mine water into the preheating tank 1.1; the bottom side of the preheating tank 1.1 is connected to the guide box 8 on the right side via the first drain pipe 1.6; a first drain valve 1.7 is installed on the first drain pipe 1.6.

[0036] The preheating tank 1.1 can be an electric heating tank or a fluid heat exchange heating tank. The heat exchange fluid used in the fluid heat exchange heating tank can be flowing hot water or high-temperature steam. This application does not restrict this and the choice can be made according to the actual situation of the enterprise.

[0037] like Figure 5 The diagram shows a partially cut-away internal structure of a preheating tank 1.1 according to the present invention. In one specific embodiment, a preheating stirring mechanism is provided inside the preheating tank 1.1. This mechanism accelerates heat transfer by agitating the mine water, allowing it to heat up to a preset temperature more quickly. The preheating stirring mechanism shown in the diagram includes a first stirring shaft 1.8, the top of which passes through the top cover of the preheating tank 1.1 and connects to a first drive motor 1.9. The first stirring shaft 1.8 is connected to first spiral blades 1.11 via several first connecting rods 1.10, and the first spiral blades 1.11 are arranged around the first stirring shaft 1.8. The first spiral blades 1.11 can drive the mine water within the preheating tank 1.1 to flow longitudinally.

[0038] Furthermore, since the mine water entering the preheating tank 1.1 contains particles such as sand and gravel, the sand and gravel particles settling at the bottom of the preheating tank 1.1 will scrape the inner wall of the preheating tank 1.1 during the agitation process, causing wear on the inner wall of the preheating tank 1.1. Therefore, in one specific embodiment of the present invention, a first baffle plate 1.12 is further added inside the conical hopper at the bottom of the preheating tank 1.1. Figure 5 As shown, the first mudguard 1.12 can be conical, with a through hole in the middle. A storage chamber is formed between the first mudguard 1.12 and the conical hopper at the bottom of the preheating tank 1.1. After sand and gravel particles enter the storage chamber, the disturbance from the preheating stirring mechanism is reduced due to the obstruction of the first mudguard 1.12, which can reduce the wear of sand and gravel particles on the inner wall of the preheating tank 1.1.

[0039] Furthermore, such as Figure 5 As shown, a first stirring blade 1.13 may be added to the bottom of the first stirring spindle 1.8. The first stirring blade 1.13 is connected to the first stirring spindle 1.8 through a first connecting rod 1.10. Figure 5 The first agitator blade 1.13 shown is elongated, with its lower edge contacting the upper surface of the first mudguard 1.12. The first agitator blade 1.13 has two functions: firstly, it agitates the mine water from the bottom as it rotates with the first stirring shaft 1.8, driving the water to flow circumferentially and accelerating heat exchange; secondly, it scrapes away substances adhering to the upper surface of the first mudguard 1.12, preventing excessively thick deposits.

[0040] like Figure 3 As shown, after the mine water is heated to a preset temperature in the preheating tank 1.1, the preheating stirring mechanism is stopped, and the water is allowed to stand for a set time, for example, 2-10 minutes. Then, the first drain valve 1.7 on the first drain pipe 1.6 on the right side of the preheating tank 1.1 is opened, and the heated mine water in the preheating tank 1.1 enters the guide box 8 on the right side. A filter plate can be installed inside the guide box 8. As the heated mine water falls, it undergoes preliminary filtration, thus reducing the amount of flocculant used subsequently. The sediment stored in the storage chamber at the bottom of the preheating tank 1.1 is sent to the sedimentation tank 4 through the first discharge valve 1.2 and the first screw conveyor 1.3. Figure 3 As shown, a drain port is provided at the bottom of the guide box 8, and the drain port is connected to the mixing reaction unit 3 through the first infusion pipe 1.14. A second infusion pump 1.15 is provided on the first infusion pipe 1.14. The heated mine water in the guide box 8 is pumped into the mixing reaction unit 3 through the second infusion pump 1.15.

[0041] like Figure 3 , Figure 4 As shown in the figure, in one specific embodiment of the present invention, the mixing reaction unit 3 includes a mixing reaction tank 3.1, a second discharge valve 3.2, a second screw conveyor 3.3, and a mixing and stirring mechanism; Figure 3In the illustrated embodiment, the mixing reaction tank 3.1 is located on the left side inside the insulated space 11. The structure of the mixing reaction tank 3.1 is the same as that of the preheating tank 1.1, consisting of an upper cylindrical body and a lower conical hopper. A top cover is provided on the top of the cylindrical body. The bottom outlet of the mixing reaction tank 3.1 is connected to the second discharge valve 3.2. The bottom outlet of the second discharge valve 3.2 is connected to the inlet of the second screw conveyor 3.3, and the outlet of the second screw conveyor 3.3 is connected to the underground sedimentation tank 4. The bottom side of the mixing reaction tank 3.1 is connected to the guide box 8 on the left side through the second drain pipe 3.4. A second drain valve 3.5 is provided on the second drain pipe 3.4. An inlet is provided on the top side of the mixing reaction tank 3.1. A first baffle plate 1.12 can also be provided inside the conical hopper at the bottom of the mixing reaction tank 3.1 for storing sediment. In addition, a mixing and stirring mechanism is provided inside the mixing reaction tank 3.1. The structure of the mixing and stirring mechanism can be the same as that of the preheating stirring mechanism, including the design of spiral blades and stirring blades. The mixing reaction vessel 3.1 is either an electric heating vessel or a fluid heat exchange heating vessel.

[0042] like Figure 6 The diagram shown is a structural illustration of the batching unit 2 of the present invention. In one specific embodiment, the batching unit 2 includes a storage hopper 2.1, a screw conveyor 2.2, a dispersion and dissolution tank 2.3, a third discharge valve 2.25, and a third screw conveyor 2.26. The storage hopper 2.1 is mounted on a second working platform 6.2 via a frame and is used to store flocculant powder. In one specific embodiment, the storage hopper 2.1 is a four-sided pyramid shape, wider at the top and narrower at the bottom, with a top cover. The screw conveyor 2.2 is inclined, with its inlet located inside the storage hopper 2.1 and its outlet connected to the inlet of the dispersion and dissolution tank 2.3. A water inlet is located at the top of the dispersion and dissolution tank 2.3, connected to a water supply system via a water supply pipe 2.13. A third discharge valve 2.25 is installed at the bottom outlet of the dispersion and dissolution tank 2.3. The bottom outlet of the third discharge valve 2.25 is connected to the inlet of the third screw conveyor 2.26, and the outlet of the third screw conveyor 2.26 is connected to the mixing reaction tank 3.1. The dispersion and dissolution tank 2.3 is equipped with a dispersing and stirring mechanism. The flocculant powder is stirred, dispersed, and dissolved into a solution in the dispersion and dissolution tank 2.3, and then fed into the mixing reaction tank 3.1 via the third screw conveyor 2.26. The flocculant solution and heated mine water are thoroughly stirred and reacted in the mixing reaction tank 3.1 for a preset time. Afterwards, the mixture is allowed to settle for a preset time, for example, 5-10 minutes. Then, the second drain valve 3.5 on the second drain pipe 3.4 on the left side of the mixing reaction tank 3.1 is opened, and the supernatant after the reaction in the mixing reaction tank 3.1 enters the guide box 8 on the left side. A filter plate can be installed in the guide box 8 on the left side, allowing the supernatant after the reaction to be filtered as it falls through the filter plate. Figure 3As shown, a drain outlet is provided at the bottom of the left guide box 8, and the drain outlet is connected to the sedimentation tank 4 through a pipe. The supernatant contains unreacted flocculant. In a preferred embodiment of the present invention, the supernatant is heated to a preset temperature, such as 20-30°C, and then returned to the mixing reaction tank 3.1 for reaction.

[0043] Furthermore, during the mixing of flocculant powder and water, powder agglomeration is prone to occur, with large clumps of powder floating on the surface of the dispersion and dissolution tank 2.3, resulting in an uneven flocculant solution and poor reaction effect. Therefore, this invention provides an improved dispersion and dissolution tank 2.3 design.

[0044] like Figure 7 The diagram shows a cross-sectional view of the improved dispersion and dissolution vessel 2.3 of this invention. The dispersion and dissolution vessel 2.3 is generally cylindrical with a conical bottom. The interior of the dispersion and dissolution vessel 2.3 is divided from top to bottom into an upper chamber 2.4, a middle chamber 2.5, and a lower chamber 2.6 by a partition. A central tube 2.7 is located in the center of the dispersion and dissolution vessel 2.3, with its top protruding beyond the top cover. The central tube 2.7 passes through the upper chamber 2.4 and the middle chamber 2.5, and its bottom opening is located within the lower chamber 2.6. An annular partition 2.8 surrounds the central tube 2.7 within the upper chamber 2.4. 8 further divides the upper chamber 2.4 into a hot water chamber 2.9 surrounding the central pipe 2.7 and a cold water chamber 2.10 surrounding the hot water chamber 2.9. A water passage hole 2.11 is provided at the bottom of the annular partition 2.8, which connects the hot water chamber 2.9 and the cold water chamber 2.10. A cold water inlet 2.12 is provided in the upper chamber 2.4, which is connected to a water supply device through a water supply pipe 2.13. In this embodiment, the water supply device provides unheated room temperature water.

[0045] like Figure 7 As shown, the water supplied by the water supply equipment first enters the outermost cold water chamber 2.10, and then enters the hot water chamber 2.9 through the water passage 2.11 at the bottom of the annular partition 2.8; the hot water chamber 2.9 is divided into multiple vertically distributed chambers by multiple annular diversion plates 2.14. Figure 8 The diagram shown is an internal structure illustration of a hot water chamber 2.9 according to the present invention. Figure 8 In the illustrated embodiment, three annular flow dividers 2.14 are horizontally arranged within the hot water chamber 2.9, each with a plurality of water passage holes evenly distributed on it. Annular electric heating tubes 2.15 are suspended in the annular space between adjacent flow dividers 2.14, and heat-conducting fins 2.16 are arranged on the electric heating tubes 2.15. Cold water flows from bottom to top within the hot water chamber 2.9, evenly dispersed through the flow dividers 2.14, and the electric heating tubes 2.15 rapidly heat the cold water to a preset temperature. Water is drawn from above the uppermost flow divider 2.14 for dissolving the flocculant.

[0046] like Figure 9 The diagram shows the top structure of the central tube 2.7 of this invention. The top of the central tube 2.7 protrudes beyond the top cover of the dispersion and dissolution tank 2.3; a spray receiving chamber 2.18 is separated from the top of the central tube 2.7 by a spray plate 2.17, which is covered with water passage holes 2.11; the spray receiving chamber 2.18 is provided with a water inlet, which is connected to a submersible pump 2.20 through a water suction pipe 2.19; as shown... Figure 8 As shown, the submersible pump 2.20 is located in the space above the uppermost diversion plate 2.14 of the hot water chamber 2.9, and extracts water heated to the preheated temperature from this space. The spray receiving chamber 2.18 sprays hot water downwards through the spray plate 2.17.

[0047] like Figure 9 As shown, an inclined cylindrical powder conveying pipe 2.21 is provided on the side wall of the central pipe 2.7, with the lower end of the powder conveying pipe 2.21 connected to the central pipe 2.7. The powder conveying pipe 2.21 is connected to the outlet of the screw conveyor 2.2 via an upwardly extending first connecting pipe 2.22. Directly feeding the flocculant powder into the central pipe 2.7 via the screw conveyor 2.2 results in poor dispersion; therefore, in an optional embodiment of the present invention, a powder dispersion mechanism is added inside the powder conveying pipe 2.21. For example... Figure 9 As shown, a powder dispersion drive motor 2.27 is installed at the outer end of the powder conveying pipe 2.21, and a rotating shaft 2.28 is installed at the axis of the powder conveying pipe 2.21. The rotating shaft 2.28 is connected to the powder dispersion drive motor 2.27 and is driven to rotate by the powder dispersion drive motor 2.27. A fan blade 2.29 is installed on the rotating shaft 2.28, near the powder dispersion drive motor 2.27. The fan blade 2.29 is located on the right side of the bottom outlet of the first connecting pipe 2.22.

[0048] The flocculant powder discharged from the screw conveyor 2.2 outlet falls into the powder conveying pipe 2.21 through the first connecting pipe 2.22. The powder dispersion drive motor 2.27 drives the fan blades 2.29 to rotate, generating a high-speed airflow that disperses the falling flocculant powder and sprays it into the central pipe 2.7. At the same time, hot water is sprayed from top to bottom into the central pipe 2.7. The hot water mixes with the continuously sprayed powder and falls into the lower chamber 2.6 below for stirring and mixing. This pre-mixing method can largely prevent the powder from agglomerating into large clumps.

[0049] like Figure 10 The diagram shown is an internal structure illustration of the powder conveying pipe 2.21 of the present invention. In an optional improvement of the present invention, a spraying blade 2.30 is provided on the rotating shaft 2.28; Figure 10In the illustrated embodiment, the dispersing blades 2.30 are elongated strips, with three blades arranged in an array along the rotation axis 2.28. The dispersing blades 2.30 are located below the bottom outlet of the first connecting pipe 2.22. The dispersing blades 2.30 disperse large clumps of falling powder, which facilitates the wind on the right side to disperse the powder.

[0050] like Figure 10 As shown, a conical guide shroud 2.31 can be added to the left side of the fan blade 2.29. The guide shroud 2.31 is coaxial with the rotating shaft 2.28. The tip of the guide shroud 2.31 faces the side of the fan blade 2.29, and the flared side of the guide shroud 2.31 faces the spraying blade 2.30. The tip of the guide shroud 2.31 is fixed inside the powder conveying pipe 2.21 by a bracket. The guide shroud 2.31 is provided with a spiral ventilation gap. The direct current generated by the rotation of the fan blade 2.29 is transformed into a swirling airflow after being guided by the guide shroud 2.31. The swirling airflow reduces the adhesion of powder to the inner wall of the powder conveying pipe 2.21.

[0051] In an optional embodiment of the present invention, a portion of the air generated in the powder conveying pipe 2.21 is diverted through the guide pipe 2.23 to the first connecting pipe 2.22, and then sprayed from top to bottom onto the inner wall of the first connecting pipe 2.22. For example, if powder is also adhering to the inner wall of the first connecting pipe 2.22, a partial amount of the air generated in the powder conveying pipe 2.21 is diverted to the inner wall of the first connecting pipe 2.22. Figure 11 The diagram shows the connection structure of the guide pipe 2.23 of the present invention. One end of the guide pipe 2.23 is connected to the powder conveying pipe 2.21, with the connection port being funnel-shaped and located between the guide shroud 2.31 and the fan blade 2.29. The other end of the guide pipe 2.23 is connected to an annular air jet pipe 2.24 disposed at the top of the first connecting pipe 2.22, and the annular air jet pipe 2.24 is disposed along the edge of the top surface of the first connecting pipe 2.22. Figure 11 As shown, the annular air jet pipe 2.24 has an annular air jet gap facing the inner wall inside the first connecting pipe 2.22 (the arrow indicates the direction of the air jet).

[0052] By setting up a powder dispersion mechanism, the mixing degree of flocculant powder and water can be greatly improved, and the speed of preparing qualified flocculant can be accelerated. At the same time, the device can improve the utilization rate of flocculant powder and reduce loss.

[0053] Furthermore, flocculant will also adhere to the inner wall of the central tube 2.7 during the preparation of the flocculant solution; therefore, in an optional improvement of the present invention, a movable inner wall cleaning mechanism is provided inside the central tube 2.7. For example... Figure 12The diagram shows the structure of the inner wall cleaning mechanism of the present invention. The inner wall cleaning mechanism includes a first telescopic rod 2.32 and a high-pressure nozzle 2.33; the first telescopic rod 2.32 can be a multi-stage telescopic rod, and a two-stage telescopic rod is used in the embodiment shown in the figure; the first telescopic rod 2.32 extends from the center of the top of the central tube 2.7 into the interior of the central tube 2.7, and passes through the spray receiving cavity 2.18 and the spray plate 2.17; an annular water storage box 2.34 is provided at the center of the lower surface of the spray plate 2.17, surrounding the first telescopic rod 2.32; the water storage box 2.34 is connected to the water pumping pipe 2.19 via a water pipe; as shown... Figure 12 As shown, the pumping pipe 2.19 branches into two branch pipes 2.35, which connect to the spray receiving chamber 2.18 and the water storage box 2.34 respectively; each of the two branch pipes 2.35 is equipped with a solenoid valve 2.36; a frustum-shaped high-pressure nozzle 2.33 is installed at the bottom of the piston rod of the first telescopic rod 2.32, and the high-pressure nozzle 2.33 is covered with spray holes facing the inner wall of the central pipe 2.7; a connector is provided on the upper surface of the high-pressure nozzle 2.33, and the connector is connected to the water storage box 2.34 through an elastic water supply pipe 2.37 spirally wound around the first telescopic rod 2.32; the elastic water supply pipe 2.37 is elastic and can elastically retract below the spray plate 2.17. Figure 13 The diagram shown is a schematic of the initial position of the high-pressure nozzle 2.33 of the present invention.

[0054] like Figure 13 As shown, during the batching process, the high-pressure nozzle 2.33 is positioned below the spray plate 2.17 and above the outlet of the powder conveying pipe 2.21. During batching, both solenoid valves 2.36 are opened simultaneously to spray the injected flocculant powder. After batching is completed, only the solenoid valve 2.36 on the water pumping branch pipe 2.35 controlling the high-pressure nozzle 2.33 is opened. The first telescopic rod 2.32 controls the high-pressure nozzle 2.33 to move up and down within the central pipe 2.7, spraying and cleaning the inner wall of the central pipe 2.7. The cleaned liquid falls into the lower chamber 2.6 below.

[0055] like Figure 14 The diagram shows the internal structure of the intermediate chamber 2.5 and the lower chamber 2.6 within the dispersion and dissolution tank 2.3 of this invention. Figure 1 . Figure 15 The diagram shows the internal structure of the intermediate chamber 2.5 and the lower chamber 2.6 within the dispersion and dissolution tank 2.3 of this invention. Figure 2A stirring drive mechanism is installed in the intermediate chamber 2.5 of the dispersion and dissolution tank 2.3, and a dispersing and stirring mechanism is installed in the lower chamber 2.6. In the embodiment shown in the figure, the stirring drive mechanism adopts a gear transmission mechanism, including a driving gear 2.38 and a driven gear disk 2.39. The driven gear disk 2.39 is rotatably arranged around the central tube 2.7. The driving gear 2.38 is located on the outside of the dispersion and dissolution tank 2.3 and is connected to a reduction motor 2.40 on the outside of the dispersion and dissolution tank 2.3. The driving gear 2.38 meshes with the driven gear disk 2.39. The reduction motor 2.40 drives the driven gear disk 2.39 to rotate.

[0056] like Figure 15 As shown, an annular track groove 2.41 is provided on the partition between the intermediate chamber 2.5 and the lower chamber 2.6. Multiple connecting posts 2.42 are provided on the driven gear disk 2.39. In the embodiment shown, three connecting posts 2.42 are arranged in a circular array on the driven gear disk 2.39, and the three connecting posts 2.42 extend through the track groove 2.41 into the bottom of the lower chamber 2.6. Figure 14 As shown, the bottom of the three connecting columns 2.42 is connected to an annular stirring support frame 2.43, and a second stirring blade 2.44 is provided on the stirring support frame 2.43; Figure 14 In the illustrated embodiment, three second stirring blades 2.44 are arranged in a ring array on the stirring support frame 2.43. The second stirring blades 2.44 contact the inner wall of the bottom conical hopper of the lower chamber 2.6. During the rotation of the second stirring blades 2.44, the flocculant solution is stirred from the bottom, driving the solution to flow circumferentially. In addition, the second stirring blades 2.44 are used to scrape the material adhering to the inner wall of the bottom conical hopper of the lower chamber 2.6 to avoid the deposition of excessively thick adhesive.

[0057] To further improve the mixing efficiency and effect of the flocculant solution, in an optional embodiment of the present invention, an agitation structure is added in the center of the three connecting columns 2.42. For example... Figure 14As shown, multiple first support rods 2.45 extend from the annular stirring support frame 2.43 towards the center. A vertical central shaft 2.46 is connected to the middle of each first support rod 2.45, and the central shaft 2.46 is located on the axis of the lower chamber 2.6. A conical dispersing head 2.47 is positioned at the top of the central shaft 2.46, with its tip pointing upwards and located at the bottom outlet of the central tube 2.7. The dispersing head 2.47 is connected to the annular stirring support frame 2.43 via inclined second support rods 2.48. Below the dispersing head 2.47, surrounding the central shaft 2.46, a second helical blade 2.49 is arranged, and the second helical blade 2.49 is connected to the central shaft 2.46 via several third support rods 2.50. Furthermore, a rotatable third stirring blade 2.51 can be provided on the connecting column 2.42. In the embodiment shown in the figure, each connecting column 2.42 has three elongated third stirring blades 2.51.

[0058] In this invention, the second stirring blade 2.44, the second spiral blade 2.49, and the third stirring blade 2.51 together constitute a stirring system for efficient stirring of the flocculant solution. Specifically, the dispersing head 2.47 can disperse the solution falling from the central tube 2.7 around the third stirring blade 2.51 for stirring, while the second spiral blade 2.49 can drive the flocculant solution to flow up and down.

[0059] The flocculant solution is stirred for a preset time, and then fed into the mixing reaction tank 3.1 through the third discharge valve 2.25 and the third screw conveyor 2.26 to mix and react with the heated mine water.

[0060] In an optional embodiment of the present invention, the mixing reaction tank 3.1 may also be equipped with a premixing device 5. The prepared flocculant solution and heated mine water are first sent to the premixing device 5 for premixing, and then introduced into the mixing reaction tank 3.1 for stirring and reaction. Figure 2 As shown, the premixing device 5 is installed on the first working platform 6.1, located on one side of the top cover of the mixing reaction tank 3.1.

[0061] like Figure 16 The diagram shown is an internal structural illustration of the premixing device 5 of the present invention. The premixing device 5 includes a cuboid premixing housing 5.1; Figure 16In the illustrated embodiment, the premixed shell 5.1 is divided into a first chamber 5.3, a second chamber 5.4, a third chamber 5.5, and a fourth chamber 5.6 from top to bottom by three inclined uniformly distributed plates 5.2. The uniformly distributed plates 5.2 are covered with long strip-shaped water leakage gaps. The two upper uniformly distributed plates 5.2 are inclined in the same direction, with the left side higher and the right side lower. The bottom uniformly distributed plate 5.2 is inclined in the opposite direction to the two upper uniformly distributed plates 5.2, with the left side lower and the right side higher. The first infusion pipe 1.14 extends into the left side of the first chamber 5.3 to deliver heated mine water into the first chamber 5.3. A rotatable first impeller 5.7 is set at the outlet position of the first infusion pipe 1.14 in the first chamber 5.3. The mine water pumped out by the first infusion pipe 1.14 impacts the first impeller 5.7 to rotate. Then, the mine water flows to the lower right and falls into the lower second chamber 5.4 when passing through the water leakage gaps. A feed inlet is provided on the left side of the premixing shell 5.1. The discharge pipe of the third screw conveyor 2.26 extends into the second chamber 5.4 from the feed inlet. The flocculant solution flows from the lower left to the lower right. The falling mine water mixes with the flocculant solution and falls into the third chamber 5.5. It then flows along the bottom uniform distribution plate 5.2 to the lower left and finally falls into the fourth chamber 5.6. The bottom surface of the fourth chamber 5.6 is inclined and connected to the side of the mixing reaction tank 3.1. The premixed solution enters the tank body from the side of the mixing reaction tank 3.1.

[0062] The premixing device 5 can reduce the impact force of mine water and uniformly mix the mine water with the flocculant solution, thereby accelerating the flocculation reaction. This solves the following problems of existing equipment: during the process of adding coagulant to sewage, the mixing efficiency between the coagulant and sewage is low under continuous sewage transport, resulting in a longer flocculation time and a slower sedimentation rate of the flocs, thus affecting the sewage treatment efficiency.

[0063] like Figure 17 The diagram shows the structure of a sedimentation tank 4 provided by the present invention. In one embodiment of the present invention, the sedimentation tank 4 is divided into a sludge tank 4.1, a flocculation sedimentation tank 4.2, a flocculation supernatant storage tank 4.3, and a flocculation supernatant filtration tank 4.4. The sediment discharged from the bottom of the preheating tank 1.1 is fed into the sludge tank 4.1 through a first discharge valve 1.2 and a first screw conveyor 1.3. The material discharged from the mixing reaction tank 3.1 is discharged into the flocculation sedimentation tank 4.2 through a second screw conveyor 3.3. The supernatant in the mixing reaction tank 3.1 is discharged into the flocculation supernatant storage tank 4.3 through the left guide box 8. This supernatant contains unreacted flocculant. The flocculation supernatant storage tank 4.3 and the flocculation supernatant filtration tank 4.4 are arranged adjacent to each other, separated by a filter screen. The filtered flocculation supernatant enters the supernatant filtration tank. The supernatant in the supernatant filtration tank is pumped into the cold water chamber 2.10 through a pipeline for heating and recycling.

[0064] This invention further provides a water pollution treatment system, which uses the above-mentioned water pollution treatment device to treat mine water as follows: the mine water is fed into a preheating unit 1 and heated to a first preset temperature; flocculant powder is fed into a batching unit 2 and dispersed and dissolved in water heated to a second preset temperature to prepare a solution; the mine water heated to the first preset temperature and the flocculant solution prepared to the second preset temperature are fed into a mixing reaction unit 3 and stirred to react; then the solution is discharged into a sedimentation tank 4 for sedimentation.

[0065] It is understood that this invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this invention. Furthermore, under the teachings of this invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this invention. Therefore, this invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this invention are within the protection scope of this invention.

Claims

1. A water pollution treatment device for a coal mine water supply pumping station, characterized in that, The system includes a preheating unit (1), a batching unit (2), a mixing and reaction unit (3), and a sedimentation tank (4). The preheating unit (1) is used to heat the mine water to a first preset temperature. The batching unit (2) is used to disperse and dissolve flocculant powder in water heated to a second preset temperature to prepare a solution. The mine water heated to the first preset temperature and the flocculant solution prepared to the second preset temperature are fed into the mixing and reaction unit (3) for stirring and reaction. Then, the solution is discharged into the sedimentation tank (4) for sedimentation. The system also includes a first frame (6), on which the batching unit (2) is installed. The batching unit (2) includes a dispersion and dissolution tank (2.3) and a screw conveyor (2.2). (2.3) The interior is divided into an upper chamber (2.4), an intermediate chamber (2.5), and a lower chamber (2.6) from top to bottom by a partition. A central tube (2.7) is set in the center of the dispersion and dissolution tank (2.3). The top of the central tube (2.7) protrudes from the top cover of the dispersion and dissolution tank (2.3). The central tube (2.7) passes through the upper chamber (2.4) and the intermediate chamber (2.5). The bottom opening of the central tube (2.7) is located in the lower chamber (2.6). An annular partition (2.8) is set around the central tube (2.7) in the upper chamber (2.4). The annular partition (2.8) further divides the upper chamber (2.4) into a hot water chamber (2.9) surrounding the central tube (2.7) and a cold water chamber (2.9) surrounding the hot water chamber (2.9). 10), A water passage hole (2.11) is provided at the bottom of the annular partition (2.8), and the water passage hole (2.11) connects the hot water chamber (2.9) and the cold water chamber (2.10); A cold water inlet (2.12) is provided in the upper chamber (2.4), and the cold water inlet (2.12) is connected to the water supply equipment through the water supply pipe (2.13); The hot water chamber (2.9) is divided into multiple chambers distributed vertically by multiple annular diversion plates (2.14); Several water passage holes (2.11) are evenly distributed on each diversion plate (2.14); An annular electric heating tube (2.15) is suspended in the annular space between adjacent diversion plates (2.14), and heat-conducting fins (2.16) are arranged on the electric heating tube (2.15); The central tube ( 2.7) The top of the inner part is divided into a spray receiving chamber (2.18) by a spray plate (2.17), and the spray plate (2.17) is covered with water passage holes (2.11); the spray receiving chamber (2.18) is provided with a water inlet, and the water inlet is connected to a submersible pump (2.20) through a water pumping pipe (2.19); the submersible pump (2.20) is located in the space above the uppermost diversion plate (2.14) of the hot water chamber (2.9); the side wall of the central pipe (2.7) is provided with an inclined cylindrical powder conveying pipe (2.21); the powder conveying pipe (2.21) is connected to the discharge port of the screw feeder (2.2) through the first connecting pipe (2.22) extending upward; the intermediate chamber (2.5) is provided with a stirring drive mechanism, and the lower chamber (2.18) is connected to the middle chamber (2.19).6) An internal distributing and mixing mechanism is provided; the mixing drive mechanism drives the distributing and mixing mechanism to rotate.

2. The water pollution treatment device for coal mine water supply pumping stations according to claim 1, characterized in that, The first frame (6) includes a first working platform (6.1) and a second working platform (6.2) arranged at different heights; a preheating unit (1) and a mixing reaction unit (3) are arranged on the second frame (7) below the first working platform (6.1); a sedimentation tank (4) is arranged underground below the first frame (6).

3. The water pollution treatment device for coal mine water supply pumping stations according to claim 2, characterized in that, The second frame (7) includes two symmetrically arranged cuboid-shaped flow guide boxes (8); a closed heat-insulating space (11) is formed between the two flow guide boxes (8).

4. The water pollution treatment device for coal mine water supply pumping stations according to claim 3, characterized in that, The preheating unit (1) includes a preheating tank (1.1), which is located in an insulated space (11). The preheating tank (1.1) consists of an upper cylindrical body and a lower conical hopper. The bottom outlet of the conical hopper is connected to a first discharge valve (1.2), and the bottom outlet of the first discharge valve (1.2) is connected to the inlet of a first screw conveyor (1.3). The outlet of the first screw conveyor (1.3) is connected to an underground sedimentation tank (4). The top side of the preheating tank (1.1) is connected to a first inlet pipe (1.4) via a first inlet pump (1.5). The bottom side of the preheating tank (1.1) is connected to a guide box (8) via a first drain pipe (1.6). A first drain valve (1.7) is installed on the first drain pipe (1.6). A preheating stirring mechanism is installed inside the preheating tank (1.1).

5. The water pollution treatment device for coal mine water supply pumping stations according to claim 4, characterized in that, The preheating tank (1.1) has a first mudguard (1.12) inside the conical hopper at the bottom; the first mudguard (1.12) has a through hole in the middle, and a storage chamber is formed between the first mudguard (1.12) and the conical hopper at the bottom of the preheating tank (1.1).

6. The water pollution treatment device for coal mine water supply pumping stations according to claim 5, characterized in that, The preheating and stirring mechanism includes a first stirring spindle (1.8), the top of which passes through the top cover of the preheating tank (1.1) and is connected to a first drive motor (1.9); the first stirring spindle (1.8) is connected to a first spiral blade (1.11) via a first connecting rod (1.10), and the first spiral blade (1.11) is arranged around the first stirring spindle (1.8); a first agitating blade (1.13) is provided at the bottom of the first stirring spindle (1.8), and the first agitating blade (1.13) is connected to the first stirring spindle (1.8) via the first connecting rod (1.10); the lower edge of the first agitating blade (1.13) contacts the upper surface of the first mudguard (1.12).

7. The water pollution treatment device for coal mine water supply pumping stations according to claim 3, characterized in that, The mixing reaction unit (3) includes a mixing reaction tank (3.1), a second discharge valve (3.2), a second screw conveyor (3.3), and a mixing and stirring mechanism; the mixing reaction tank (3.1) is located inside the heat-insulating space (11); the bottom outlet of the mixing reaction tank (3.1) is connected to the second discharge valve (3.2); the bottom outlet of the second discharge valve (3.2) is connected to the inlet of the second screw conveyor (3.3), and the outlet of the second screw conveyor (3.3) is connected to the underground sedimentation tank (4); the bottom side of the mixing reaction tank (3.1) is connected to the guide box (8) through the second drain pipe (3.4); a second drain valve (3.5) is installed on the second drain pipe (3.4); an inlet is installed on the top side of the mixing reaction tank (3.1); and a mixing and stirring mechanism is installed inside the mixing reaction tank (3.1).

8. The water pollution treatment device for coal mine water supply pumping stations according to claim 7, characterized in that, The batching unit (2) also includes a storage hopper (2.1), a third discharge valve (2.25), and a third screw conveyor (2.26); the storage hopper (2.1) is installed on the second working platform (6.2) via a frame and is used to store flocculant powder; the screw feeder (2.2) is set at an angle, the inlet of the screw feeder (2.2) is located inside the storage hopper (2.1), and the outlet of the screw feeder (2.2) is connected to the inlet of the dispersion and dissolution tank (2.3); A third discharge valve (2.25) is installed at the bottom outlet of the dispersion dissolution tank (2.3). The bottom outlet of the third discharge valve (2.25) is connected to the inlet of the third screw conveyor (2.26). The outlet of the third screw conveyor (2.26) is connected to the mixing reaction tank (3.1).

9. A water pollution treatment system, characterized in that, The coal mine water supply pump station water pollution treatment device according to claim 1 is used to treat the mine water as follows: the mine water is fed into the preheating unit (1) and heated to the first preset temperature; the flocculant powder is fed into the batching unit (2) and dispersed and dissolved in the water heated to the second preset temperature to prepare a solution; the mine water heated to the first preset temperature and the flocculant solution prepared to the second preset temperature are fed into the mixing reaction unit (3) and stirred to react; then the solution is discharged into the sedimentation tank (4) for sedimentation.

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