Coal mining wastewater treatment device and method

Abstract

The invention relates to the field of wastewater treatment, and discloses a coal mining wastewater treatment device and method, the coal mining wastewater treatment device comprises a treatment box, a mixing box and a connecting channel; the filtering and mixing unit is arranged in the treatment box and the mixing box; the connecting channel is fixedly arranged on one side of the treatment box, coal mine processing wastewater is poured into the treatment box, after the wastewater enters the treatment box, the driving assembly drives the filtering and scraping assembly to rotate, the filtering and scraping assembly firstly intercepts impurities such as coal cinder and stone doped in the wastewater, then the wastewater flows into the mixing box, and the mixing box is used for mixing the wastewater. The filtering and scraping assembly can scrape and push waste water left at the bottom of the treatment box into the mixing box, so that large impurities in the waste water are filtered, and blockage or mechanical damage caused by stirring and discharging of the large impurities is avoided.

Description

Technical Field

[0001] The present invention relates to the field of wastewater treatment, and particularly to a coal mine wastewater treatment device and method. Background Art

[0002] Coal mine wastewater refers to the general term for various wastewater generated during coal mining, mainly including mine water, coal washing wastewater, leaching water from coal gangue yards, etc. These wastewater contain high concentrations of suspended solids, heavy metal ions, organic pollutants and salts. If directly discharged without effective treatment, it will cause serious pollution to the surrounding water bodies, soil and ecological environment.

[0003] The sewage treatment device for open-pit coal mines with the patent number CN119386553A includes a first sewage tank, a second sewage tank, a first driving component and a second driving component. The first sewage tank has a first communication hole, and the second sewage tank has a second communication hole. The first communication hole and the second communication hole are connected. A first bottom plate is provided in the first sewage tank, and a second bottom plate is provided in the second sewage tank. The first driving component is connected to the first bottom plate and is used to drive the first bottom plate to move up and down in the first sewage tank so that the sewage in the first sewage tank can flow into the second sewage tank through the first communication hole. The second driving component is connected to the second bottom plate and is used to drive the second bottom plate to move up and down in the second sewage tank so that the sewage in the second sewage tank can flow into the first sewage tank through the second communication hole. The sewage treatment device for open-pit coal mines has high operating efficiency.

[0004] In the prior art, sewage is discharged into the first sewage tank for sedimentation, and then the sewage is sent from the first sedimentation tank to the second sedimentation tank for secondary sedimentation. However, the sewage generated by coal mine production will contain large particulate matters such as coal cinder and stones, and there will also be some floating particulate matters. Just sedimenting through the sedimentation tank may not completely remove the impurities in the sewage, and the impulse of the water flow will cause the impurities to float and move, which may cause the impurities to be impelled. When draining water again, large impurities such as coal cinder and stones will block the water conveyance pipeline, resulting in the inability to continue the subsequent work. Summary of the Invention

[0005] The purpose of the present invention is to provide a coal mine wastewater treatment device and method to solve the following technical problems.

[0006] The sewage generated by coal mine production will contain large particulate matters such as coal cinder and stones, and there will also be some floating particulate matters. The impulse of the water flow will cause the impurities to float and move, which may cause the impurities to be impelled. When draining water again, large impurities such as coal cinder and stones will block the water conveyance pipeline, resulting in the inability to continue the subsequent work.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] A coal mine wastewater treatment device includes a treatment tank, a mixing tank and a connecting channel; it also includes a filtering and mixing unit arranged in the treatment tank and the mixing tank;

[0009] The connecting channel is fixedly arranged on one side of the treatment tank;

[0010] The mixing tank is fixedly arranged at one end of the connecting channel far away from the treatment tank;

[0011] The filtering and mixing unit is arranged in the treatment tank and the mixing tank, and includes a driving component, a filtering and scraping component, a sewage discharging component and a stirring and pushing component; the driving component drives the filtering and scraping component to rotate; the driving component drives the sewage discharging component to rotate; the driving component drives the stirring and pushing component to rotate.

[0012] Further, the driving component includes a driving motor, a driving shaft, a driving gear, a connecting shaft, a second connecting gear and a driven gear;

[0013] The filtering and scraping unit includes a connecting block, a scraping block, a filter plate and a baffle;

[0014] Wherein, the driving shaft is rotatably arranged in the treatment tank; the driving motor is fixedly arranged at the bottom of the treatment tank, and the driving motor is communicated with the driving shaft; the driving gear is fixedly arranged on the driving shaft; the driven gear is rotatably arranged below the driving gear on the driving shaft; the connecting shaft is rotatably arranged on the side wall of the treatment tank; the second connecting gear is fixedly arranged at one end of the connecting shaft located in the treatment tank; the second connecting gear meshes with the driving gear and the driven gear;

[0015] The connecting block is fixedly arranged below the driven gear; the scraping block is fixedly arranged on the connecting block, and the scraping block slides on the bottom of the treatment tank; the filter plate is fixedly arranged at the top of the driving shaft; the baffle is fixedly arranged on the side wall of the treatment tank, and the baffle is in close contact with the filter plate.

[0016] Further, the driving component also includes an L-shaped bracket, a first connecting gear, a discharging gear and a rotating rod;

[0017] The sewage discharging component includes a discharging bin, a spiral blade and a discharging plate;

[0018] Among them, the L-shaped bracket is fixedly arranged in the processing box, and the connecting shaft penetrates through the L-shaped bracket; the first connecting gear is fixedly arranged at one end of the connecting shaft outside the processing box; the discharge bin is fixedly arranged on the processing box; the rotating rod is rotatably arranged in the discharge bin; the discharge gear is fixedly arranged at the bottom of the rotating rod, and the discharge gear meshes with the first connecting gear; the spiral blade is fixedly arranged on the rotating rod; the discharge plate is fixedly arranged at the top of the discharge bin.

[0019] Further, the stirring and pushing assembly includes a stirring motor, a stirring shaft and fan blades;

[0020] Among them, the stirring shaft is rotatably arranged in the mixing box; the stirring motor is fixedly arranged at the bottom of the mixing box, and the stirring motor is connected to the stirring shaft; the fan blades are fixedly arranged on the stirring shaft at equal intervals and evenly.

[0021] Further, the stirring and pushing assembly further includes a rotating disc, a fixed rod, a moving frame, a pushing rod, a pushing plate, a separating plate and a filtering bin;

[0022] Among them, the filtering bin is fixedly arranged on one side of the mixing box; the separating plate is fixedly arranged in the filtering bin; the rotating disc is fixedly arranged at the top of the stirring shaft; the fixed rod is fixedly arranged at the top edge of the rotating disc; the moving frame is sleeved on the fixed rod; the pushing rod is fixedly arranged on one side of the moving frame; the pushing plate is fixedly arranged at one end of the pushing rod away from the moving frame, and the pushing plate slides on the surface of the separating plate.

[0023] Further, a waste bin is fixedly connected to one side of the filtering bin; a water outlet is fixedly connected to the bottom of the filtering bin.

[0024] Further, a water pump is fixedly connected in the mixing box; a sewage suction pipe is fixedly connected to the top of the water pump; the other end of the sewage suction pipe is inserted into the filtering bin.

[0025] A method for treating coal mine wastewater, the treatment method includes the following steps:

[0026] S1: The sewage generated during the coal mine production process is discharged into the processing box, and the filter plate in the processing box filters impurities such as coal cinder and stones in the wastewater;

[0027] S2: The filtered impurities such as coal cinder and stones are sent out of the processing box by the spiral blade, then the wastewater enters the mixing box through the connecting channel, and then a flocculant is put into the mixing box;

[0028] S3: The stirring shaft and the fan blades rotate to fully mix the wastewater and the flocculant in the mixing tank, causing the floating particulate matter in the wastewater to substantially solidify. Then, a water pump is used to pump out these substances from the mixing tank, allowing the wastewater and the particulate matter to enter the filtration chamber.

[0029] S4: The separation plate in the filtration chamber separates the particulate matter from the wastewater. The particulate matter enters the waste bin, and the wastewater is discharged from the filtration chamber through the water outlet.

[0030] Advantages of the present invention:

[0031] (1) Pour the wastewater from coal mine processing into the treatment tank. After the wastewater enters the treatment tank, the driving assembly drives the filtration and scraping assembly to rotate. The filtration and scraping assembly first intercepts impurities such as coal cinder and stones mixed in the wastewater, and then allows the wastewater to flow into the mixing tank. The filtration and scraping assembly will also scrape and push the residual wastewater at the bottom of the treatment tank into the mixing tank. This setting is to filter large impurities in the wastewater to avoid blockage or mechanical damage caused by the agitation and discharge of large impurities.

[0032] (2) The intercepted coal cinder, stones and other impurities will enter the sewage discharge assembly. The driving assembly drives the sewage discharge assembly to rotate, and the rotating sewage discharge assembly will transport the coal cinder, stones and other impurities out of the treatment tank. This setting is to prevent the intercepted coal cinder, stones and other impurities from accumulating above the filtration and scraping assembly, resulting in ineffective filtration and separation of subsequent wastewater.

[0033] (3) The wastewater enters the mixing tank through the connection channel, and then a flocculant is added to the mixing tank. After adding the flocculant, the driving assembly drives the stirring and pushing assembly to rotate. The rotating stirring and pushing assembly mixes the wastewater and the flocculant, causing the floating particulate matter in the wastewater to coagulate and precipitate under the action of the flocculant. Then, the precipitated substances and the wastewater are pumped out of the mixing tank together, and the precipitated substances and the wastewater are separated. This setting can strip the impurities in the wastewater again, removing a large amount of impurities from the wastewater, and subsequent disinfection and purification will not cause blockage of the infusion pipeline or the purifier due to the impurities in the wastewater. Brief Description of the Drawings

[0034] The present invention will be further described below with reference to the accompanying drawings.

[0035] Figure 1 It is a top-down perspective view of the wastewater treatment device of the present invention;

[0036] Figure 2 It is a sectional view of the treatment tank in the present invention;

[0037] Figure 3 It is Figure 2 The enlarged view at A in

[0038] Figure 4 Is a perspective view of the filtering and scraping component in the present invention;

[0039] Figure 5 Is a perspective view of the sewage discharging component in the present invention;

[0040] Figure 6 Is a perspective view of the stirring and pushing component in the present invention;

[0041] Figure 7 Is a bottom perspective view of the wastewater treatment device of the present invention.

[0042] Description of the drawings: 1. Treatment tank; 2. Mixing tank; 3. Connection channel; 4. Filter plate; 5. Baffle; 6. Discharge bin; 7. Discharge plate; 8. Discharge gear; 9. First connection gear; 10. Fixed rod; 11. Rotating disc; 12. Moving frame; 13. Sewage suction pipe; 14. Filter bin; 15. Water outlet; 16. Waste bin; 17. Rotating rod; 18. Connecting shaft; 19. Driving motor; 20. Stirring motor; 21. Helical blade; 22. L-shaped bracket; 23. Second connection gear; 24. Driving gear; 25. Driven gear; 26. Connecting block; 27. Scraping block; 28. Fan blade; 29. Pushing rod; 31. Separation plate; 32. Water pump; 33. Pushing plate; 34. Driving shaft; 35. Stirring shaft; 36. Filtering and scraping component; 37. Sewage discharging component; 38. Stirring and pushing component. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0044] Please refer to Figures 1-7 As shown, the present invention is a coal mine wastewater treatment device, including a treatment tank 1, a mixing tank 2 and a connection channel 3; it also includes a filtering and mixing unit arranged in the treatment tank 1 and the mixing tank 2;

[0045] The connection channel 3 is fixedly arranged on one side of the treatment tank 1;

[0046] The mixing tank 2 is fixedly arranged at one end of the connection channel 3 away from the treatment tank 1;

[0047] The filtering and mixing unit is arranged in the treatment tank 1 and the mixing tank 2, including a driving component, a filtering and scraping component 36, a sewage discharging component 37 and a stirring and pushing component 38; the driving component drives the filtering and scraping component 36 to rotate; the driving component drives the sewage discharging component 37 to rotate; the driving component drives the stirring and pushing component 38 to rotate;

[0048] Pour the wastewater processed from the coal mine into the treatment tank 1. After the wastewater enters the treatment tank 1, the driving component drives the filtering and scraping component 36 to rotate. The filtering and scraping component 36 first intercepts impurities such as coal cinder and stones doped in the wastewater, and then allows the wastewater to flow into the mixing tank 2. The filtering and scraping component 36 will also scrape and push the residual wastewater at the bottom of the treatment tank 1 into the mixing tank 2. This setting is to filter large impurities in the wastewater to avoid blockage or mechanical damage caused by the agitation and discharge of large impurities;

[0049] The intercepted coal cinder, stones and other impurities will enter the sewage discharge component 37. The driving component drives the sewage discharge component 37 to rotate. The rotating sewage discharge component 37 will transport the coal cinder, stones and other impurities out of the treatment tank 1. This setting is to prevent the intercepted coal cinder, stones and other impurities from accumulating above the filtering and scraping component 36, resulting in ineffective filtering and separation of subsequent wastewater;

[0050] The wastewater enters the mixing tank 2 through the connecting channel 3, and then a flocculant is added to the mixing tank 2. After adding the flocculant, the driving component drives the stirring and pushing component 38 to rotate. The rotating stirring and pushing component 38 mixes the wastewater and the flocculant, so that the floating particles in the wastewater coagulate and precipitate under the action of the flocculant. Then, the precipitated substances and the wastewater are pumped out of the mixing tank 2 together, and the precipitated substances and the wastewater are separated. This setting can strip the impurities in the wastewater again, so that a large amount of impurities in the wastewater are removed. In subsequent disinfection and purification, the infusion pipeline or the purifier will not be blocked due to the impurities in the wastewater.

[0051] Please refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 7 As shown in, the driving component includes a driving motor 19, a driving shaft 34, a driving gear 24, a connecting shaft 18, a second connecting gear 23 and a driven gear 25;

[0052] The filtering and scraping unit includes a connecting block 26, a scraping block 27, a filter plate 4 and a baffle 5;

[0053] Among them, the driving shaft 34 is rotatably arranged in the treatment tank 1; the driving motor 19 is fixedly arranged at the bottom of the treatment tank 1, and the driving motor 19 is communicated with the driving shaft 34; the driving gear 24 is fixedly arranged on the driving shaft 34; the driven gear 25 is rotatably arranged below the driving gear 24 on the driving shaft 34; the connecting shaft 18 is rotatably arranged on the side wall of the treatment tank 1; the second connecting gear 23 is fixedly arranged at one end of the connecting shaft 18 located in the treatment tank 1; the second connecting gear 23 meshes with the driving gear 24 and the driven gear 25;

[0054] The connecting block 26 is fixedly arranged below the driven gear 25; the scraping block 27 is fixedly arranged on the connecting block 26, and the scraping block 27 slides on the bottom of the processing tank 1; the filter plate 4 is fixedly arranged on the top of the driving shaft 34; the baffle 5 is fixedly arranged on the side wall of the processing tank 1, and the baffle 5 is in close contact with the filter plate 4;

[0055] The driving shaft 34 is rotated by driving of the driving motor 19. The rotating driving shaft 34 drives the filter plate 4 to rotate. A baffle 5 is fixed on the processing tank 1. When the filter plate 4 rotates, impurities such as cinder and stone in the wastewater will gather towards the edge of the processing tank 1 due to centrifugal force, and then leave the top of the filter plate 4 after being blocked and guided by the baffle 5. The wastewater passing through the filter plate 4 will flow to the bottom of the processing tank 1, and then the wastewater will flow into the mixing tank 2 through the connecting channel 3. Some floating particles will remain in the wastewater, and these particles will adhere to the bottom of the processing tank 1. If not processed, they will accumulate in large quantities. Therefore, the driving shaft 34 rotates to drive the driving gear 24 to rotate, the driving gear 24 rotates to drive the second connecting gear 23 and the connecting shaft 18 to rotate, so that the driven gear 25 on the driving shaft 34 rotates. The rotating driven gear 25 will make the connecting block 26 and the scraping block 27 rotate. The rotating scraping block 27 will scrape the bottom of the processing tank 1, scrape the particles remaining at the bottom of the processing tank 1, and then cooperate with the rotating centrifugal force to make these particles enter the mixing tank 2 from the connecting channel 3.

[0056] Please refer to Figure 1 、 Figure 2 and Figure 5 As shown in, the driving assembly further includes an L-shaped bracket 22, a first connecting gear 9, a discharging gear 8 and a rotating rod 17;

[0057] The sewage discharging assembly 37 includes a discharging bin 6, a spiral blade 21 and a discharging plate 7;

[0058] Wherein, the L-shaped bracket 22 is fixedly arranged in the processing tank 1, and the connecting shaft 18 penetrates through the L-shaped bracket 22; the first connecting gear 9 is fixedly arranged at one end of the connecting shaft 18 located outside the processing tank 1; the discharging bin 6 is fixedly arranged on the processing tank 1; the rotating rod 17 is rotatably arranged in the discharging bin 6; the discharging gear 8 is fixedly arranged at the bottom of the rotating rod 17, and the discharging gear 8 meshes with the first connecting gear 9; the spiral blade 21 is fixedly arranged on the rotating rod 17; the discharging plate 7 is fixedly arranged at the top of the discharging bin 6;

[0059] The large impurities such as cinder and stone intercepted by the baffle 5 will enter the discharge bin 6. The connecting shaft 18 rotates to drive the first connecting gear 9 to rotate. The rotating first connecting gear 9 will drive the discharge gear 8 to rotate. The rotating discharge gear 8 will cause the rotating rod 17 and the spiral blade 21 to rotate. The rotating spiral blade 21 will lift and convey the pushed cinder, stone and other impurities, and discharge these impurities from the discharge plate 7. In this way, only the cinder, stone and other impurities are conveyed out of the discharge bin 6, and the waste water will return to the treatment tank 1 due to its fluidity and its own gravity.

[0060] Please refer to Figure 2 、 Figure 6 and Figure 7 As shown, the stirring and pushing component 38 includes a stirring motor 20, a stirring shaft 35 and a fan blade 28;

[0061] Among them, the stirring shaft 35 is rotatably arranged in the mixing tank 2; the stirring motor 20 is fixedly arranged at the bottom of the mixing tank 2, and the stirring motor 20 is communicated with the stirring shaft 35; the fan blades 28 are fixedly arranged on the stirring shaft 35 at equal intervals and evenly.

[0062] The stirring shaft 35 is driven to rotate by the stirring motor 20. The rotating stirring shaft 35 will drive the fan blade 28 to rotate. The rotating fan blade 28 will stir the waste water and the flocculant in the mixing tank 2, so that the flocculant combines with the floating particles in the waste water, and the particles adhere and coagulate and finally precipitate to the bottom of the mixing tank 2.

[0063] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 6 As shown, the stirring and pushing component 38 further includes a rotating disk 11, a fixed rod 10, a moving frame 12, a pushing rod 29, a pushing plate 33, a separating plate 31 and a filtering bin 14;

[0064] Among them, the filtering bin 14 is fixedly arranged on one side of the mixing tank 2; the separating plate 31 is fixedly arranged in the filtering bin 14; the rotating disk 11 is fixedly arranged on the top of the stirring shaft 35; the fixed rod 10 is fixedly arranged on the top edge of the rotating disk 11; the moving frame 12 is sleeved on the fixed rod 10; the pushing rod 29 is fixedly arranged on one side of the moving frame 12; the pushing plate 33 is fixedly arranged at the end of the pushing rod 29 away from the moving frame 12, and the pushing plate 33 slides on the surface of the separating plate 31;

[0065] The agitated wastewater will enter the filtration chamber 14, and then the separation plate 31 in the filtration chamber 14 will separate the wastewater from the particulate matter in the wastewater. To prevent a large amount of particulate matter from accumulating on the separation plate 31 and causing blockage of the separation plate 31, the stirring shaft 35 rotates. The rotating stirring shaft 35 drives the rotating disk 11 to rotate. The rotating rotating disk 11 makes the top fixed rod 10 perform a circular motion, thereby causing the moving frame 12 to move back and forth. The moving frame 12 moving back and forth drives the push rod 29 to move. The moving push rod 29 makes the push plate 33 perform a reciprocating motion on the separation plate 31, pushing the particulate matter accumulated on the separation plate 31 out. One end of the push plate 33 close to the mixing box 2 is set as a conical inclined surface. When moving back, it will shovel up the particulate matter on the separation plate 31 and send it to the other side. When the push plate 33 moves away from the mixing box 2, all the particulate matter is sent out, and the brush head at the bottom of the push plate 33 brushes the separation plate 31 to clean the holes on the separation plate 31 so that the wastewater can pass through better.

[0066] Please refer to Figure 1 、 Figure 2 and Figure 7 As shown in the figure, a waste bin 16 is fixedly connected to one side of the filtration chamber 14; a water outlet 15 is fixedly connected to the bottom of the filtration chamber 14;

[0067] The particulate matter on the separation plate 31 is pushed by the movement of the push plate 33. The pushed particulate matter will be sent into the waste bin 16, and then collected uniformly by the staff. The wastewater passing through the separation plate 31 will be discharged from the water outlet 15 at the bottom of the filtration chamber 14, and then undergo the next purification treatment.

[0068] Please refer to Figure 1 、 Figure 2 and Figure 3 As shown in the figure, a water pump 32 is fixedly connected inside the mixing box 2; a sewage suction pipe 13 is fixedly connected to the top of the water pump 32; the other end of the sewage suction pipe 13 is inserted into the filtration chamber 14;

[0069] The water pump 32 inside the mixing box 2 pumps the wastewater and the condensed particulate matter in the mixing box 2, and then the sewage suction pipe 13 sends these wastewater and particulate matter into the filtration chamber 14 for the filtration chamber 14 to separate and filter them. The sewage suction pipe 13 is fixed inside the filtration chamber 14 (not shown in the figure).

[0070] Please refer to Figures 1 to 7 As shown in the figure, a method for treating coal mine wastewater includes the following steps:

[0071] S1: The sewage generated during the coal mine production process will be discharged into the treatment box 1, and the filter plate 4 in the treatment box 1 filters impurities such as coal cinder and stones in the wastewater;

[0072] S2: The filtered impurities such as cinder and stone will be sent out of the treatment tank 1 by the spiral blade 21. Then the wastewater will enter the mixing tank 2 through the connecting channel 3, and then a flocculant will be put into the mixing tank 2.

[0073] S3: The stirring shaft 35 and the fan blades 28 rotate to fully mix the wastewater and the flocculant in the mixing tank 2, causing the floating particles in the wastewater to substantially solidify. Then these substances are pumped out of the mixing tank 2 by the water pump 32, and the wastewater and the particles enter the filtration chamber 14.

[0074] S4: The separation plate 31 in the filtration chamber 14 separates the particles from the wastewater. The particles enter the waste bin 16, and the wastewater is discharged from the water outlet 15 out of the filtration chamber 14.

[0075] The working principle of the present invention: Pour the wastewater from coal mine processing into the treatment tank 1. After the wastewater enters the treatment tank 1, the driving component drives the filtering and scraping component 36 to rotate. The filtering and scraping component 36 first intercepts the impurities such as cinder and stone doped in the wastewater, and then allows the wastewater to flow into the mixing tank 2. The filtering and scraping component 36 will also scrape and push the residual wastewater at the bottom of the treatment tank 1 into the mixing tank 2. This setting is to filter the large impurities in the wastewater to avoid blockage or mechanical damage caused by the agitation and discharge of the large impurities.

[0076] The intercepted impurities such as cinder and stone will enter the sewage discharging component 37. The driving component drives the sewage discharging component 37 to rotate, and the rotating sewage discharging component 37 will transport the impurities such as cinder and stone out of the treatment tank 1. This setting is to avoid the accumulation of the intercepted impurities such as cinder and stone above the filtering and scraping component 36, resulting in ineffective filtration and separation of the subsequent wastewater.

[0077] The wastewater enters the mixing tank 2 through the connecting channel 3, and then a flocculant is added to the mixing tank 2. After adding the flocculant, the driving component drives the stirring and pushing component 38 to rotate. The rotating stirring and pushing component 38 mixes the wastewater and the flocculant, causing the floating particles in the wastewater to coagulate and precipitate under the action of the flocculant. Then the precipitated substances and the wastewater are pumped out of the mixing tank 2 together, and the precipitated substances and the wastewater are separated. This setting can strip the impurities in the wastewater again, removing a large amount of impurities from the wastewater, so that the subsequent disinfection and purification will not be blocked by the impurities in the wastewater in the infusion pipeline or the purifier.

[0078] The above has described an embodiment of the present invention in detail, but the content is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A coal mine wastewater treatment device, comprising a treatment tank (1), a mixing tank (2) and a connecting channel (3); characterized in that, It further includes a filtering and mixing unit disposed in the processing tank (1) and the mixing tank (2); The connection channel (3) is fixedly disposed on one side of the processing tank (1); The mixing tank (2) is fixedly disposed at one end of the connection channel (3 away from the processing tank (1); The filtering and mixing unit is disposed in the processing tank (1) and the mixing tank (2), and includes a driving assembly, a filtering and scraping assembly (36), a sewage discharging assembly (37), and a stirring and pushing assembly (38); the driving assembly drives the filtering and scraping assembly (36) to rotate; the driving assembly drives the sewage discharging assembly (37) to rotate; the driving assembly drives the stirring and pushing assembly (38) to rotate.

2. The coal mine wastewater treatment device according to claim 1, characterized in that, The driving assembly includes a driving motor (19), a driving shaft (34), a driving gear (24), a connecting shaft (18), a second connecting gear (23), and a driven gear (25); The filtering and scraping unit includes a connecting block (26), a scraping block (27), a filter plate (4), and a baffle (5); Wherein, the driving shaft (34) is rotatably disposed in the processing tank (1); the driving motor (19) is fixedly disposed at the bottom of the processing tank (1), and the driving motor (19) is communicated with the driving shaft (34); the driving gear (24) is fixedly disposed on the driving shaft (34); the driven gear (25) is rotatably disposed below the driving gear (24) on the driving shaft (34); the connecting shaft (18) is rotatably disposed on the side wall of the processing tank (1); the second connecting gear (23) is fixedly disposed at one end of the connecting shaft (18) inside the processing tank (1); the second connecting gear (23) meshes with the driving gear (24) and the driven gear (25); The connecting block (26) is fixedly disposed below the driven gear (25); the scraping block (27) is fixedly disposed on the connecting block (26), and the scraping block (27) slides on the bottom of the processing tank (1); the filter plate (4) is fixedly disposed at the top of the driving shaft (34); the baffle (5) is fixedly disposed on the side wall of the processing tank (1), and the baffle (5) is in close contact with the filter plate (4).

3. The coal mine wastewater treatment device according to claim 2, characterized in that, The driving assembly further includes an L-shaped bracket (22), a first connecting gear (9), a discharging gear (8), and a rotating rod (17); The sewage discharging assembly (37) includes a discharging bin (6), a spiral blade (21), and a discharging plate (7); Among them, the L-shaped bracket (22) is fixedly arranged in the processing box (1), and the connecting shaft (18) penetrates through the L-shaped bracket (22); the first connecting gear (9) is fixedly arranged at one end of the connecting shaft (18) outside the processing box (1); the discharging bin (6) is fixedly arranged on the processing box (1); the rotating rod (17) is rotatably arranged in the discharging bin (6); the discharging gear (8) is fixedly arranged at the bottom of the rotating rod (17), and the discharging gear (8) meshes with the first connecting gear (9); the spiral blade (21) is fixedly arranged on the rotating rod (17); the discharging plate (7) is fixedly arranged at the top of the discharging bin (6).

4. A coal mine wastewater treatment device according to claim 3, characterized in that, The stirring and pushing assembly (38) includes a stirring motor (20), a stirring shaft (35) and fan blades (28); Among them, the stirring shaft (35) is rotatably arranged in the mixing box (2); the stirring motor (20) is fixedly arranged at the bottom of the mixing box (2), and the stirring motor (20) is communicated with the stirring shaft (35); the fan blades (28) are fixedly arranged on the stirring shaft (35) at equal intervals and uniformly.

5. The coal mine wastewater treatment device according to claim 4, characterized in that, The stirring and pushing assembly (38) further includes a rotating disk (11), a fixed rod (10), a moving frame (12), a pushing rod (29), a pushing plate (33), a separating plate (31) and a filtering bin (14); Among them, the filtering bin (14) is fixedly arranged on one side of the mixing box (2); the separating plate (31) is fixedly arranged in the filtering bin (14); the rotating disk (11) is fixedly arranged at the top of the stirring shaft (35); the fixed rod (10) is fixedly arranged at the top edge of the rotating disk (11); the moving frame (12) is sleeved on the fixed rod (10); the pushing rod (29) is fixedly arranged on one side of the moving frame (12); the pushing plate (33) is fixedly arranged at one end of the pushing rod (29) away from the moving frame (12), and the pushing plate (33) slides on the surface of the separating plate (31).

6. The coal mine wastewater treatment device according to claim 5, wherein, One side of the filtering bin (14) is fixedly connected with a waste bin (16); the bottom of the filtering bin (14) is fixedly connected with a water outlet (15).

7. An apparatus for treating coal mine wastewater according to claim 6, characterized in that A water pump (32) is fixedly connected in the mixing box (2); the top of the water pump (32) is fixedly connected with a sewage suction pipe (13); the other end of the sewage suction pipe (13) is inserted into the filtering bin (14).

8. A method for treating coal mine wastewater, using a coal mine wastewater treatment device as described in claim 7, characterized in that: The treatment method includes the following steps: S1: The sewage generated during the coal mine production process is discharged into the processing box (1), and the filter plate (4) in the processing box (1) filters impurities such as coal cinder and stones in the wastewater; S2: The filtered coal cinder, stones and other impurities are sent out of the processing box (1) by the spiral blade (21), then the wastewater enters the mixing box (2) through the connecting channel (3), and then a flocculant is put into the mixing box (2). S3: The stirring shaft (35) and the fan blades (28) rotate to fully mix the wastewater and the flocculant in the mixing tank (2), causing the floating particulate matter in the wastewater to substantially solidify. Then, a water pump (32) pumps out these substances from the mixing tank (2), allowing the wastewater and the particulate matter to enter the filtration chamber (14). S4: The separation plate (31) in the filtration chamber (14) separates the particulate matter from the wastewater. The particulate matter enters the waste bin (16), and the wastewater is discharged from the filtration chamber (14) through the water outlet (15).

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