A heavy metal removal device for acidic mine wastewater

Abstract

This utility model discloses a heavy metal removal device for acidic mine wastewater, relating to the field of heavy metal removal technology. Specifically, it includes a housing, a diversion pipe, and two separate tanks. The housing is connected to the diversion pipe via a delivery pipe equipped with a solenoid valve. The bottom of the diversion pipe is connected to each separate tank. A photoelectric sensor is installed inside the housing. A through groove is opened on one side of the housing, and a movable plate is movably connected to the through groove via a pin. The length of the movable plate inside the housing is shorter than the length of the movable plate outside the housing. A connecting rod is movably connected to the top of the external movable plate via a pin. An inclined plate is movably connected to the top of the connecting rod via a pin. A phenolphthalein bottle is installed on the top of the inclined plate. When the rotating shaft is driven by a drive motor, the stirring rod synchronously stirs the wastewater. The scraper rotates with the rotating shaft, scraping off impurities attached to the inner wall in real time, avoiding the accumulation of impurities on the inner wall of the tank, which would affect subsequent wastewater treatment.

Description

Technical Field

[0001] This utility model relates to the field of heavy metal removal technology, specifically a heavy metal removal device for acidic mine wastewater. Background Technology

[0002] Acidic mine wastewater, a major pollutant from mining activities, is rich in sulfuric acid and heavy metal ions such as Cu, Pb, and Zn. Direct discharge without effective treatment poses a serious threat to the ecological environment and human health. Currently, chemical precipitation is the mainstream technology for mine wastewater treatment due to its mature process and controllable cost. Its core lies in adjusting the pH value of the wastewater to cause heavy metal ions to precipitate as hydroxides. However, existing technologies have two shortcomings:

[0003] On the one hand, the pH value of wastewater from different mining areas fluctuates greatly, and the optimal pH conditions for precipitation of heavy metal ions vary significantly. Traditional processes use a single reaction tank to uniformly adjust the pH value, which cannot match the optimal treatment parameters for different acidic or alkaline wastewaters, often resulting in incomplete removal of some heavy metals or excessive consumption of reagents.

[0004] On the other hand, due to prolonged use, impurities may adhere to or remain on the inner wall of the tank. Traditional cleaning methods require workers to disassemble the device to clean the inner wall, which is not only time-consuming but also difficult, reducing the practicality of the device. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a heavy metal removal device for acidic mine wastewater, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: It includes a housing, a distribution pipe, and two separate tanks. The housing is connected to the distribution pipe via a delivery pipe equipped with a solenoid valve. The bottom of the distribution pipe communicates with each separate tank. A photoelectric sensor is installed inside the housing. A through groove is opened on one side of the housing, and a movable plate is movably connected to the through groove via a pin. The length of the movable plate inside the housing is shorter than the length of the movable plate outside the housing. A connecting rod is movably connected to the top of the external movable plate via a pin. An inclined plate is movably connected to the top of the inclined plate. A phenolphthalein bottle is installed on the top of the phenolphthalein bottle, and a graduated quantitative dropper is installed at the top of the bottle mouth. The quantitative dropper has graduations to accurately control the solution dripping volume. A connecting frame is fixedly connected to the top of the housing, and the inclined plate is movably connected to the surface of the connecting frame via a pin. The two tanks contain alkaline and acidic environments, respectively. A cover plate is fixedly installed on the top of each tank via studs. A bearing is fixedly inserted into the top of each cover plate, and the bearing is rotatably connected to... The system includes a rotating shaft, with a stirring rod and a scraper fixedly connected to the other end of each shaft. The scraper is in contact with the inner wall of the tank. A housing is fixedly connected to the top of each cover plate, and a drive motor is fixedly connected inside the housing. The other end of the output shaft of the drive motor is fixedly connected to the other end of the rotating shaft. The scraper is made of elastic rubber, and its curvature matches the curvature of the inner wall of the tank. When rotating with the stirring rod, it can scrape off the sediment on the inner wall. A movable sealing plate is movably connected to the inner wall of the diversion pipe, and the movable sealing plate is in contact with the inner wall of the diversion pipe. A turntable is provided outside the movable sealing plate, and the turntable is fixedly connected to the movable sealing plate. A mounting plate is fixedly connected to the surface of the diversion pipe, and an electric push rod is movably connected to the surface of the mounting plate via a pin. The other end of the electric push rod is movably connected to a movable rod via a pin, and the movable rod is fixedly connected to the surface of the turntable. The electric push rod is electrically connected to a photoelectric sensor.

[0009] Optionally, both tanks have observation windows on their surfaces, and the surfaces of the observation windows are equipped with scales.

[0010] Optionally, a feed pipe is fixedly connected to the surface of the tank, and a protective cover is movably connected to the surface of the feed pipe via a hinge.

[0011] Optionally, a water outlet pipe is fixedly connected to the side of the tank, and a first pump body is provided on the surface of the water outlet pipe.

[0012] Optionally, a discharge pipe is fixedly connected to the bottom of the tank, and a second pump body is provided on the surface of the discharge pipe.

[0013] Optionally, a support rod is fixedly connected to the bottom of each of the two tanks, and a base plate is provided at the bottom of the support rod.

[0014] This utility model provides a heavy metal removal device for acidic mine wastewater, which has the following beneficial effects:

[0015] 1. This acidic mine wastewater heavy metal removal device introduces wastewater into a tank, where it presses against a movable plate. The movable plate acts as a lever, and when it rotates upwards, it tilts the phenolphthalein bottle using a pin and connecting plate. Phenolphthalein is then introduced into the tank via a metering dropper. A photoelectric sensor transmits a signal to an electric push rod, which adjusts the movable sealing plate inside the diversion pipe to direct wastewater of different acidity or alkalinity into tanks of different pH levels.

[0016] 2. In this acidic mine wastewater heavy metal removal device, when the drive motor drives the rotating shaft to rotate, the stirring rod stirs the wastewater synchronously, and the scraper rotates with the rotating shaft to scrape off the impurities attached to the inner wall in real time, so as to avoid the accumulation of impurities on the inner wall of the tank and affect the subsequent wastewater treatment. Attached Figure Description

[0017] Figure 1 This is a frontal cross-sectional view of the present invention.

[0018] Figure 2 This is a schematic diagram of the rear cross-sectional structure of this utility model;

[0019] Figure 3 This is a side view of the structure of this utility model;

[0020] Figure 4 This is a front view structural diagram of the present invention;

[0021] Figure 5 This is a side view of the structure of this utility model;

[0022] Figure 6 for Figure 2 Enlarged structural diagram at point A in the middle;

[0023] Figure 7 This is a schematic diagram of the structure of this utility model viewed from below.

[0024] In the diagram: 1. Tank; 2. Stirring rod; 3. Shell; 4. Drive motor; 5. Shaft; 6. Bearing; 7. Scraper; 8. Cover plate; 9. Protective cover; 10. Feed pipe; 11. Support rod; 12. Base plate; 13. First pump body; 14. Water outlet pipe; 15. Through groove; 16. Observation window; 17. Scale; 18. Second pump body; 19. Discharge pipe; 20. Mounting plate; 21. Electric push rod; 22. Movable sealing plate; 23. Movable rod; 24. Turntable; 25. Movable plate; 26. Box body; 27. Solenoid valve; 28. Conveying pipe; 29. ​​Diverter pipe; 30. Connecting rod; 31. Inclined plate; 32. Phenolphthalein bottle; 33. Connecting frame; 34. Metering dropper. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example

[0027] Please see Figures 1 to 7This utility model provides a technical solution, comprising a housing 26, a diversion pipe 29, and two sub-tanks 1. The housing 26 is connected to the diversion pipe 29 via a delivery pipe 28 equipped with a solenoid valve 27. The bottom of the diversion pipe 29 is connected to each sub-tank 1. A photoelectric sensor is installed inside the housing 26. A through groove 15 is opened on one side of the housing 26. A movable plate 25 is movably connected to the through groove 15 via a pin. The length of the movable plate 25 inside the housing 26 is shorter than the length of the movable plate 25 outside the housing 26. A connecting rod is movably connected to the top of the movable plate 25 via a pin. 30. The top of the connecting rod 30 is movably connected to an inclined plate 31 via a pin. A phenolphthalein bottle 32 is mounted on the top of the inclined plate 31. A graduated quantitative dropper 34 is installed at the top of the phenolphthalein bottle 32. The quantitative dropper 34 is graduated to precisely control the amount of solution added. A connecting frame 33 is fixedly connected to the top of the box 26. The inclined plate 31 is movably connected to the surface of the connecting frame 33 via a pin. The two tanks 1 contain alkaline and acidic environments, respectively. A cover plate 8 is fixedly installed on the top of each tank via studs. A bearing 6 is fixedly inserted into the top of each cover plate 8. The bearing 6 rotates within each bearing plate. A rotating shaft 5 is connected to the tank 1. A stirring rod 2 and a scraper 7 are fixedly connected to the other end of the rotating shaft 5. The scraper 7 is in contact with the inner wall of the tank 1. A housing 3 is fixedly connected to the top of the cover plate 8. A drive motor 4 is fixedly connected inside the housing 3. The other end of the output shaft of the drive motor 4 is fixedly connected to the other end of the rotating shaft 5. The scraper 7 is made of elastic rubber, and its curvature matches the curvature of the inner wall of the tank 1. When rotating with the stirring rod 2, it can scrape away sediment from the inner wall. A movable sealing plate 22 is movably connected to the inner wall of the diversion pipe 29. The movable sealing plate 22 is in contact with the inner wall of the diversion pipe 29. A turntable 24 is provided on the outside of the 22, and the turntable 24 is fixedly connected to the movable sealing plate 22. The movable sealing plate 22 is in contact with the inner wall of the diversion pipe 29. A mounting plate 20 is fixedly connected to the surface of the diversion pipe 29. An electric push rod 21 is movably connected to the surface of the mounting plate 20 through a pin. The other end of the electric push rod 21 is movably connected to a movable rod 23 through a pin. The movable rod 23 is fixedly connected to the surface of the turntable 24. The electric push rod 21 is electrically connected to the photoelectric sensor.

[0028] Specifically, wastewater is introduced into the tank, and the wastewater back presses against the movable plate 25. The movable plate 25 acts as a lever. The movable plate 25 outside the tank rotates upward, and with the help of the pin and connecting plate, it can tilt the phenolphthalein bottle 32. Phenolphthalein is introduced into the tank through the metering pipe 34. The photoelectric sensor transmits the signal to the electric push rod 21. The electric push rod 21 adjusts the movable sealing plate 22 in the diversion pipe 29 to introduce wastewater of different acids and alkalis into tanks 1 with different pH levels. When the drive motor 4 drives the rotating shaft 5 to rotate, the stirring rod 2 stirs the wastewater synchronously. The scraper 7 rotates with the rotating shaft 5 to scrape off the impurities attached to the inner wall in real time, so as to avoid the accumulation of impurities on the inner wall of the tank 1, which would affect the subsequent wastewater treatment.

[0029] Please refer to Figure 1 to Figure 4 Both tanks 1 have observation windows 16 on their surfaces, and scales 17 are provided on the surfaces of the observation windows 16. A feed pipe 10 is fixedly connected to the surface of the tank 1, and a protective cover 9 is movably connected to the surface of the feed pipe 10 via a hinge.

[0030] Specifically, by opening the observation window 16 and the scale 17, the remaining amount of wastewater inside the tank 1 can be observed, which facilitates treatment and processing. By setting the feed pipe 10, chemical reactants can be added into the tank 1 for reaction and precipitation. By setting the protective cover 9, the inside of the tank 1 can be protected when the device is not in use.

[0031] Please refer to Figure 1 to Figure 5 A water outlet pipe 14 is fixedly connected to the side of the tank body 1, and a first pump body 13 is provided on the surface of the water outlet pipe 14. A discharge pipe 19 is fixedly connected to the bottom of the tank body 1, and a second pump body 18 is provided on the surface of the discharge pipe 19.

[0032] Specifically, by setting the first pump body 13 to operate, the wastewater treated in the upper layer of tank 1 can be discharged. By setting the second pump body 18 to operate, the impurities and heavy metals at the bottom of tank 1 can be discharged through the discharge pipe 19. The bottom of both tanks 1 is fixedly connected with support rods 11, and the bottom of the support rods 11 is provided with a base plate 12. By setting the support rods 11 and the base plate 12, the device can be supported and placed.

[0033] During use, after wastewater is injected into the tank 26, the weight of the wastewater in the tank 26 acts on the inner short arm of the movable plate 25, causing the movable plate 25 to rotate around the pin in the through groove 15. Since the inner movable plate 25 is shorter than the outer one, the outer movable plate 25 drives the tilting plate 31 to lift upward around the connecting frame 33 at the top of the tank 26 via the connecting rod 30, causing the phenolphthalein bottle 32 to tilt. The metering dropper 34 drips the phenolphthalein solution into the tank. If the solution is colorless, it is determined to be acidic wastewater. The photoelectric sensor sends a signal to the electric push rod 21, triggering diversion to the alkaline environment tank 1. If the solution turns red, it is determined to be alkaline wastewater. The photoelectric sensor sends another signal to the electric push rod 21, triggering diversion to the acidic environment tank 1. After receiving the signal, the electric push rod operates, driving the movable rod 23. The rotation causes the movable sealing plate 22 to rotate, thus diverting the flow. Depending on the actual situation, the protective cover 9 is opened. Alkaline chemicals such as lime and sodium hydroxide are added to the alkaline tank 1, while acidic chemicals such as sodium sulfide or hydrogen sulfide are added to the acidic tank 1 for neutralization and precipitation. During the chemical reaction, the drive motor 4 operates, and the drive motor 4 drives the stirring rod 2 and scraper 7 to rotate via the rotating shaft 5. The scraper 7 scrapes the inside of the tank 1 to prevent impurities from adhering to the inner wall surface of the tank 1, which is difficult to remove. The stirring rod 2 stirs the wastewater and chemical reagents to increase the reaction efficiency. After the reaction has been going on for a period of time, the water and impurities in the tank 1 are discharged through the first pump 13 and the second pump 18.

[0034] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A heavy metal removal device for acidic mine wastewater, comprising a housing (26), a diversion pipe (29), and two separate tanks (1), characterized in that: The box (26) is connected to the diversion pipe (29) through the delivery pipe (28) with the solenoid valve (27). The bottom of the diversion pipe (29) is connected to each sub-tank (1). The box (26) is equipped with a photoelectric sensor. A through groove (15) is provided on one side of the box (26). A movable plate (25) is movably connected to the through groove (15) by a pin. The length of the movable plate (25) inside the box (26) is shorter than the length of the movable plate (25) outside the box (26). A connecting rod (30) is movably connected to the top of the movable plate (25) outside by a pin. An inclined plate (31) is movably connected to the top of the connecting rod (30) by a pin. A phenolphthalein bottle (32) is provided on the top of the inclined plate (31). A graduated quantitative dropper (34) is installed at the top of the mouth of the phenolphthalein bottle (32). The quantitative dropper (34) is graduated to accurately control the amount of solution added. A connecting frame (33) is fixedly connected to the top of the box (26). The inclined plate (31) is movably connected to the surface of the connecting frame (33) by a pin. The two tanks (1) contain alkaline and acidic environments respectively. Each tank has a cover plate (8) fixedly installed on its top by studs. Each cover plate (8) has a bearing (6) fixedly inserted on its top. Each bearing (6) has a rotating shaft (5) rotatably connected inside its top. Each rotating shaft (5) has a stirring rod (2) and a scraper (7) fixedly connected to its other end. The scraper (7) is in contact with the inner wall of the tank (1). Each cover plate (8) has a housing (3) fixedly connected to its top. Each housing (3) has a drive motor (4) fixedly connected inside its top. The other end of the output shaft of the drive motor (4) is fixedly connected to the other end of the rotating shaft (5). The scraper (7) is made of elastic rubber and its curvature matches the curvature of the inner wall of the tank (1). When the stirring rod (2) rotates, it can scrape off the sediment on the inner wall. A movable sealing plate (22) is movably connected to the inner wall of the diversion pipe (29). The movable sealing plate (22) is in contact with the inner wall of the diversion pipe (29). A turntable (24) is provided outside the movable sealing plate (22). The turntable (24) is fixedly connected to the movable sealing plate (22). An installation plate (20) is fixedly connected to the surface of the diversion pipe (29). An electric push rod (21) is movably connected to the surface of the installation plate (20) through a pin. The other end of the electric push rod (21) is movably connected to a movable rod (23) through a pin. The movable rod (23) is fixedly connected to the surface of the turntable (24). The electric push rod (21) is electrically connected to the photoelectric sensor.

2. The acidic mine drainage heavy metal removal device of claim 1, wherein: Both tanks (1) have observation windows (16) on their surfaces, and the surfaces of the observation windows (16) are provided with scales (17).

3. The acidic mine drainage heavy metal removal device of claim 1, wherein: The surface of the tank (1) is fixedly connected to a feed pipe (10), and the surface of the feed pipe (10) is movably connected to a protective cover (9) via a hinge.

4. The acidic mine drainage heavy metal removal device of claim 1, wherein: A water outlet pipe (14) is fixedly connected to the side of the tank (1), and a first pump body (13) is provided on the surface of the water outlet pipe (14).

5. The acidic mine drainage heavy metal removal device of claim 1, wherein: The bottom of the tank (1) is fixedly connected to a discharge pipe (19), and a second pump body (18) is provided on the surface of the discharge pipe (19).

6. The acidic mine drainage heavy metal removal device of claim 1, wherein: The bottom of each of the two tanks (1) is fixedly connected to a support rod (11), and the bottom of the support rod (11) is provided with a base plate (12).

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