Acid mine wastewater treatment reaction device based on mine alkaline waste residues

Abstract

The invention relates to the technical field of wastewater treatment, and discloses an acid mine wastewater treatment reaction device based on mine alkaline waste residue, which comprises a reaction tank, a top plate is fixedly arranged in the reaction tank, feed ports are symmetrically formed in the upper surface of the top plate, a first regulation and control plate is rotatably clamped to the lower end of the top plate, and discharge ports are symmetrically formed in the first regulation and control plate; a first driven gear is arranged at the lower end of the first regulation and control plate, air outlet holes are symmetrically formed in the upper surface of the top plate, a second regulation and control plate is rotationally clamped to the lower end of the top plate, a butt joint hole is formed in the second regulation and control plate, a second rotating shaft is fixedly arranged at the lower end of the regulation and control plate, and the lower end of the second rotating shaft is fixedly sleeved with a second driven gear; according to the device, the pH value of wastewater is collected in real time and fed back to the PLC, the controller is linked with the adjusting assembly, and the feeding speed of alkaline waste residues and the discharge capacity of reaction gas are adjusted by changing the overlap ratio of the feeding port and the discharging port and the overlap ratio of the gas outlet and the butt joint hole and dynamically adapting to the change of the pH value by changing the overlap ratio of the feeding port and the discharging port and the overlap ratio of the gas outlet and the butt joint hole.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, in particular to an acid mine wastewater treatment reaction device based on alkaline mine waste residue. BACKGROUND

[0002] Acid mine wastewater is wastewater containing high-concentration sulfuric acid and heavy metal ions generated by the oxidation of metal sulfides, which can cause a sharp drop in water pH, causing serious damage to the ecological system of rivers, lakes and other water bodies, and making it difficult for aquatic organisms to survive.

[0003] The traditional acid mine wastewater treatment reaction device cannot combine the initial pH value fluctuation of the acid wastewater to be treated each time, the acceleration effect of the neutralization reaction rate caused by the temperature rise in the reaction process, and the reaction rate attenuation caused by the gradual depletion of the effective solvent amount that can participate in the reaction in the system in the later reaction stage, and cannot dynamically adjust the addition amount of alkaline waste residue in real time and accurately. This defect not only greatly reduces the treatment efficiency of acid wastewater, but also makes it difficult to achieve stable control of the effluent quality meeting the discharge standard, and is prone to cause waste of valuable resources due to excessive addition of alkaline waste residue, and may also cause additional problems such as increased sludge production and rising disposal costs, which cannot adapt to the actual treatment needs of acid mine wastewater with large quality fluctuations and complex reaction conditions.

[0004] Therefore, the present application provides an acid mine wastewater treatment reaction device based on alkaline mine waste residue, which aims to systematically solve the above technical bottlenecks and provide an efficient, accurate, economic and stable treatment solution for acid mine wastewater. SUMMARY

[0005] The present application aims to provide an acid mine wastewater treatment reaction device based on alkaline mine waste residue, which solves the following technical problems: the traditional acid mine wastewater treatment reaction device cannot combine the initial pH value fluctuation of the acid wastewater to be treated each time, the acceleration effect of the neutralization reaction rate caused by the temperature rise in the reaction process, and the reaction rate attenuation caused by the gradual depletion of the effective solvent amount that can participate in the reaction in the system in the later reaction stage, and cannot dynamically adjust the addition amount of alkaline waste residue in real time and accurately.

[0006] The present application can be achieved by the following technical solutions: An acid mine wastewater treatment reaction device based on alkaline mine waste residue, comprising an acid-base neutralization assembly; The acid-base neutralization assembly comprises a reaction tank, a top plate is fixedly arranged at the inner top end of the reaction tank, an adjusting assembly is arranged on the top plate, the adjusting assembly comprises a feeding port symmetrically arranged on the upper surface of the top plate, a first control plate is rotationally connected to the lower end of the top plate, a discharging port symmetrically arranged on the first control plate is matched with the feeding port, a first rotating shaft is fixedly arranged at the lower end of the first control plate, a first driven gear is fixedly arranged on the outer surface of the first rotating shaft; An air outlet is symmetrically arranged on the upper surface of the top plate, a second control plate is rotationally connected to the lower end of the top plate, a butt joint hole is arranged on the second control plate and matched with the air outlet, a second rotating shaft is fixedly arranged at the lower end of the second control plate, a second driven gear is fixedly arranged on the lower end of the second rotating shaft, and a driving gear is arranged between the first driven gear and the second driven gear. A PH detection assembly is arranged at the lower end of the top plate, the PH detection assembly comprises a first air cylinder fixedly arranged at the lower end of the top plate, and a detection probe is arranged at the lower end of the piston rod of the first air cylinder.

[0007] As a further scheme of the present application, a dome-shaped top cover is arranged at the top of the reaction tank, a feeding pipe is connected to the outer surface of the dome-shaped top cover, and a PLC controller is arranged at the upper end of the dome-shaped top cover.

[0008] As a further scheme of the present application, an air storage tank is arranged on the upper surface of the top plate, a guide pipe is arranged at the upper end of the air storage tank, and a gas treatment tank is arranged outside the reaction tank.

[0009] As a further scheme of the present application, a feeding assembly is arranged at the upper end of the reaction tank, the feeding assembly comprises a rolling cylinder fixedly arranged at the upper end of the reaction tank, and an inverted trapezoidal feeding bin is fixedly arranged at the upper end of the rolling cylinder. A crushing roller is symmetrically rotationally arranged in the inverted trapezoidal feeding bin, and a grinding assembly is arranged in the rolling cylinder 601.

[0010] As a further scheme of the present application, the grinding assembly comprises an adjusting screw arranged in the rolling cylinder, rotating rods are fixedly arranged at the upper and lower ends of the adjusting screw, the same grinding cylinder is sleeved on the outer walls of the two rotating rods, a threaded sleeve is threadedly connected to the outer surface of the adjusting screw, and the lower end of the threaded sleeve is fixedly connected with the grinding cylinder. A first gear is fixedly arranged on the outer surface of the threaded sleeve, a second gear is arranged on one side of the first gear, and an extension rod is arranged in the middle of the second gear.

[0011] As a further scheme of the present application, a worm is fixedly arranged at the upper and lower ends of the grinding cylinder.

[0012] As a further embodiment of the present invention: a vibrating screen assembly is provided at the lower end of the top plate, the vibrating screen assembly includes mounting plates fixedly installed at the lower end of the top plate and on the inner side wall of the reaction tank, and sliding grooves are provided on both mounting plates; The same screen plate is slidably engaged in the two sliding grooves. Baffles are fixedly installed on both sides of the screen plate. A spring connected to the screen plate is fixedly installed at one end of each of the two sliding grooves. A cam is fixedly installed at the lower end of the first rotating shaft.

[0013] As a further aspect of the present invention, the sieve plate is arranged in an inclined manner.

[0014] As a further embodiment of the present invention: a stirring assembly is provided inside the reaction vessel, the stirring assembly includes a stirring rod rotatably disposed inside the reaction vessel, a connecting sleeve is rotatably disposed on the top plate, the stirring rod extends through the connecting sleeve into the interior of the reaction vessel and is provided with multiple stirring blades, and guide grooves are symmetrically opened at the connection between the connecting sleeve and the stirring rod; The outer surface of the stirring rod is symmetrically provided with guide rods that are adapted to the guide groove, and the outer surface of the connecting sleeve is fixedly provided with a third gear, and a fourth gear is meshed on one side of the third gear.

[0015] As a further aspect of the present invention: the outer surface of the reaction vessel is provided with a heat insulation component, the heat insulation component includes a heat insulation cover sleeved on the outer surface of the reaction vessel, the outer surface of the heat insulation cover is fixedly provided with a heat insulation layer, the top of the heat insulation cover is provided with an exhaust pipe, and one end of the exhaust pipe is connected to a vacuum pump. A regulating pipe is provided in the middle of the air outlet pipe, and a solenoid valve is provided on the regulating pipe.

[0016] The beneficial effects of this invention are: (1) The present invention collects the pH value of wastewater in real time through the pH detection component and feeds it back to the PLC controller. The linkage adjustment component dynamically adjusts the overlap between the feed port and the discharge port, the gas outlet and the docking hole, and accurately adapts to dynamic factors such as the initial pH fluctuation of wastewater, the change of reaction temperature and the consumption of effective solvent, so as to realize the real-time control of the amount of alkaline waste residue added and the amount of reaction gas discharged. This ensures that the effluent water quality is stable and meets the standards, and avoids the waste of resources and the increase in sludge disposal costs caused by excessive addition of waste residue. (2) The present invention uses the crushing roller, grinding component and auger structure of the feeding component to refine the alkaline waste residue into fine particles. Combined with the vibration and dispersion effect of the vibrating screen component and the multi-depth stirring function of the stirring component, the contact area between the waste residue and the acidic wastewater is greatly increased, and the neutralization reaction rate is accelerated. At the same time, the negative pressure insulation and dynamic heat dissipation design of the heat preservation component maintains the optimal temperature environment inside the reaction tank, further ensuring the reaction efficiency and effectively solving the technical pain points of low processing efficiency and poor adaptability of traditional devices.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the reaction vessel of the present invention; Figure 3 This is a schematic diagram of the overall structure of the reaction vessel of the present invention; Figure 4 This is a schematic diagram of the structure of the feed inlet and air outlet of the present invention; Figure 5 This is a schematic diagram of the structure of a partial component of the adjustment assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the first and second control plates and other components of the adjustment assembly of the present invention; Figure 7 This is a schematic diagram of the structure of the pH detection component of the present invention; Figure 8 This is a schematic diagram of the structure of the crushing roller of the present invention; Figure 9 This is a schematic diagram of the structure of the grinding assembly of the present invention; Figure 10 This is a schematic diagram of the structure of the vibrating screen assembly of the present invention; Figure 11 This is a schematic diagram of the structure of the stirring assembly of the present invention; Figure 12 This is a schematic diagram of the structure of the guide groove and guide rod of the stirring assembly of the present invention.

[0020] In the diagram: 1. Support base; 2. Acid-base neutralization assembly; 3. Adjustment assembly; 4. Insulation assembly; 5. pH detection assembly; 6. Feeding assembly; 7. Vibrating screen assembly; 8. Stirring assembly; 201. Reaction tank; 202. Dome-shaped top cover; 203. Feed pipe; 204. Top plate; 205. PLC controller; 301. Feed inlet; 302. First control plate; 303. Discharge outlet; 304. First rotating shaft; 305. First driven gear; 306. Vent; 307. Second control plate; 308. Connecting hole; 309. Second rotating shaft; 310. Second driven gear; 311. Drive gear; 312. Discharge trough; 313. Gas storage tank; 314. Gas treatment tank; 401. Insulation cover; 402. Insulation layer; 403. Vent pipe; 40 4. Vacuum pump; 405. Adjusting pipe; 406. Solenoid valve; 501. First cylinder; 502. Detection probe; 601. Crushing cylinder; 602. Inverted trapezoidal feeding hopper; 603. Crushing roller; 604. Grinding assembly; 6041. Adjusting screw; 6042. Rotating rod; 6043. Grinding cylinder; 6044. Threaded sleeve; 6045. First gear; 6046. Second gear; 6047. Telescopic rod; 6048. Screw; 701. Mounting plate; 702. Sliding groove; 703. Screen plate; 704. Screen hole; 705. Baffle; 706. Spring; 707. Cam; 801. Stirring rod; 802. Connecting sleeve; 803. Stirring blade; 804. Guide groove; 805. Guide rod; 806. Third gear; 807. Fourth gear. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols 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.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] In the field of wastewater treatment technology, traditional acidic mine wastewater treatment reactors struggle to dynamically adjust the dosage of alkaline waste residue in real time, taking into account multiple dynamic factors such as the initial pH fluctuations of the acidic wastewater being treated, the accelerated neutralization reaction rate caused by temperature increases during the reaction process, and the gradual depletion of available solvents in the later stages of the reaction. This deficiency not only significantly reduces the treatment efficiency of acidic wastewater and makes it difficult to achieve stable control of effluent quality to meet discharge standards, but also easily leads to the waste of valuable resources due to excessive alkaline waste residue addition. Furthermore, it may cause additional problems such as increased sludge production and disposal costs, failing to meet the actual treatment needs of acidic mine wastewater with its large fluctuations in water quality and complex reaction conditions. Therefore, this invention proposes an acidic mine wastewater treatment reactor based on alkaline mine waste residue, aiming to systematically overcome the above-mentioned technical bottlenecks and provide an efficient, precise, economical, and stable treatment solution for acidic mine wastewater.

[0024] Example 1: Please refer to Figure 1 - Figure 3 As shown, an acidic mine wastewater treatment reaction device based on alkaline mine slag includes multiple support bases 1. A common acid-base neutralization component 2 is mounted on the upper end of each support base 1. The acid-base neutralization component 2 includes a reaction tank 201 fixedly mounted on the upper end of each support base 1. A dome-shaped top cover 202 is sealed to the top of the reaction tank 201 by fastening bolts. A sealing groove is formed on the mating surface between the dome-shaped top cover 202 and the reaction tank 201, and a fluororubber sealing gasket is embedded in the groove to ensure overall sealing. A feed pipe 203 is fixedly connected to the outer surface of the dome-shaped top cover 202. A water pump is installed at one end of the feed pipe 203, which can pump the acidic wastewater to be treated into the reaction tank 201. A valve is installed on the feed pipe 203, which can realize real-time control of the input flow of acidic wastewater and achieve dynamic regulation in conjunction with subsequent reaction treatment. A top plate 204 is fixedly installed at the top of the inner end of the reaction tank 201. An equipment layer is formed between the top plate 204 and the dome-shaped top cover 202. One end of the feed pipe 203 extends through the top plate 204 into the interior of the reaction tank 201. A PLC controller 205 is installed at the upper end of the dome-shaped top cover 202. A discharge pipe is installed on the outer wall of the bottom of the reaction vessel 201. The outlet of the discharge pipe has a built-in stainless steel anti-clogging filter screen to intercept unreacted waste residue particles and prevent pipe blockage. This discharge pipe is used to discharge the clarified and qualified wastewater from the upper part after the neutralization reaction is completed. The lower end of the reaction vessel 201 is sealed with a circular base plate by detachable bolts. The circular base plate is made of thickened carbon steel and is treated with anti-corrosion. A double-layer composite sealing gasket is pressed between the bottom plate and the reaction vessel 201 to ensure sealing performance to prevent wastewater leakage and to buffer the vibration and impact during the reaction process. The base plate is designed to be detachable to facilitate the cleaning and recycling of the sedimented waste residue in the tank after the reaction is completed. In this embodiment, acidic wastewater enters the reaction tank 201 through the feed pipe 203 and undergoes a neutralization reaction with the alkaline mine waste residue in the tank in a sealed environment. After the reaction, the clarified and qualified wastewater in the upper part is discharged through the discharge pipe 205 with an anti-clogging filter screen. The detachable circular bottom plate facilitates the cleaning and recycling of the sedimented waste residue in the tank. The entire process is sealed to ensure no leakage.

[0025] For further details, please refer to Figure 4 - Figure 6 As shown, an adjustment component 3 is provided on the top plate 204. The adjustment component 3 is used to control the feeding speed of the alkaline waste residue and the discharge speed of the neutralization reaction gas in real time according to the initial pH value of the acidic wastewater to be treated and the rate acceleration caused by the temperature rise during the reaction process. The adjustment component 3 includes two feed ports 301 symmetrically opened on the upper surface of the top plate 204. The two feed ports 301 are arranged in an arc shape. The lower end of the top plate 204 is rotatably engaged with a first control plate 30 directly below the two feed ports 301. 2. An annular groove is provided at the bottom of the top plate 204. The first control plate 302 is rotatably engaged in the annular groove. The first control plate 302 is symmetrically provided with a vertically penetrating discharge port 303. The discharge port 303 is adapted to the feed port 301. The rapid feeding of alkaline waste residue is achieved through the cooperation of the discharge port 303 and the feed port 301. A first rotating shaft 304 is fixedly provided at the lower end of the first control plate 302. A first driven gear 305 is fixedly sleeved on the outer surface of the first rotating shaft 304. The upper surface of the top plate 204 is symmetrically provided with air vents 306. A second control plate 307 is rotatably engaged at the lower end of the top plate 204 directly below the two air vents 306. The upper surface of the second control plate 307 is tightly fitted to the top plate 204. Symmetrically provided on the second control plate 307 are vertically penetrating connecting holes 308, which are adapted to the two air vents 306. By rotating the second control plate 307, the overlap between the air vents 306 and the connecting holes 308 is adjusted to precisely regulate the gas discharge rate. A second rotating shaft 309 is fixedly mounted at the lower end of the second control plate 307, and a second driven gear is fixedly sleeved at the lower end of the second rotating shaft 309. 310, the upper ends of the first driven gear 305 and the second driven gear 310 are symmetrically provided with feeding slots 312. The upper surface of the top plate 204 is provided with a gas storage box 313 above the two air outlets 306. The upper end of the gas storage box 313 is provided with a conduit. One end of the conduit extends to the outside of the reaction tank 201 and is provided with a gas treatment box 314. The gas treatment box 314 is provided with an alkaline absorbent liquid (such as sodium hydroxide solution) to spray and neutralize the incoming reaction gas. When acidic mine wastewater and alkaline waste residue are neutralized, acidic harmful gases such as carbon dioxide and hydrogen sulfide are easily generated. The alkaline absorbent liquid (such as sodium hydroxide solution) can neutralize the acid and base through the reaction. A drive gear 311 is meshed between the first driven gear 305 and the second driven gear 310. The drive gear 311 is driven to rotate by a motor located on the upper end of the top plate 204. The motor is located on the upper end of the top plate 204, and the output shaft of the motor extends to the lower end of the top plate 204 and is fixedly connected to the drive gear 311. In this embodiment, the motor drives the active gear 311 to rotate, which meshes with the first driven gear 305 and the second driven gear 310, driving them to operate synchronously. The first driven gear 305 drives the first control plate 302 to rotate within the annular groove of the top plate 204 via the first rotating shaft 304, adjusting the overlap between the discharge port 303 on the first control plate 302 and the inlet 301 (arc-shaped setting) of the top plate 204. Combined with the initial pH fluctuation of the acidic wastewater to be treated, the feeding speed of the alkaline waste residue is precisely controlled in real time. The second driven gear 310... Gear 310 drives the second control plate 307 to rotate via the second rotating shaft 309, adjusting the overlap between the docking hole 308 on the second control plate 307 and the vent hole 306 on the top plate 204. This adapts to the accelerated neutralization reaction rate caused by the temperature rise during the reaction process, precisely controlling the discharge speed of the reaction gas. The feeding trough 312 at the upper end of the first driven gear 305 and the second driven gear 310 assists in the smooth falling of the waste residue, ultimately achieving dynamic adaptation and control of the amount of alkaline waste residue added and the emission of reaction gas, improving processing efficiency and stability. In the initial stage of the reaction, the reaction vessel 201 contains a large amount of acidic solvent, resulting in a rapid reaction rate. At this time, the feeding rate of the alkaline waste residue needs to be relatively fast. The inlet 301 and outlet 303 are completely overlapped, with no overlap. Simultaneously, the vent 306 and the connecting hole 308 are completely overlapped, and the reaction vessel 201 is in a sealed state. All gases and heat generated during the reaction are stored within the reaction vessel 201. The neutralization reaction is exothermic. As the temperature inside the reaction vessel 201 increases, the reaction rate accelerates, and the feeding rate of the alkaline waste residue also increases. As the reaction progresses... As the amount of acidic wastewater available for reaction in reaction tank 201 decreases and the temperature reaches the optimal reaction temperature for neutralization, and temperature is no longer a factor affecting the reaction process, the temperature inside reaction tank 201 becomes too high, which can also lead to damage to parts such as reaction tank 201. At this time, the overlap between the inlet 301 and the outlet 303 becomes smaller and smaller, while the overlap between the vent 306 and the docking hole 308 increases. While venting the gas, the feeding speed of alkaline waste residue is controlled to avoid excessive addition and waste of valuable resources due to excessive feeding speed.

[0026] For further details, please refer to Figure 2 , Figure 3As shown, the outer surface of the reaction vessel 201 is provided with a heat insulation component 4. The heat insulation component 4 includes a heat insulation cover 401 sleeved on the outer surface of the reaction vessel 201. A heat insulation layer 402 is fixedly connected to the outer surface of the heat insulation cover 401. An exhaust pipe 403 is provided at the top of the heat insulation cover 401. A vacuum pump 404 is connected to one end of the exhaust pipe 403. An regulating pipe 405 is provided in the middle of the exhaust pipe 403. A solenoid valve 406 is provided on the regulating pipe 405. In this embodiment, after the vacuum pump 404 is started, the air between the insulation cover 401 and the outer wall of the reaction vessel 201 is extracted through the air outlet pipe 403, reducing the thermal convection effect in this space and further reducing heat loss. The two work together to stabilize the temperature inside the reaction vessel 201, ensuring that the neutralization reaction continues to proceed efficiently at the optimal temperature, and avoiding temperature fluctuations from affecting the reaction rate and processing effect. The temperature is detected by a temperature sensor. When the temperature inside the reaction vessel 201 is higher than the optimal reaction temperature, the vacuum pump 404 is stopped first, and the negative pressure between the insulation cover 401 and the outer wall of the reaction vessel 201 is released. Then, the solenoid valve 406 of the air outlet pipe 403 is opened to allow outside air to enter the gap. The natural convection of the air enhances heat conduction and accelerates the dissipation of excess heat from the reaction vessel 201 to the outside. After the temperature drops to the optimal range, the vacuum pump 404 is restarted to extract air and restore the insulation state. This dynamically balances the temperature inside the vessel, avoiding problems such as abnormal reaction rate and decreased activity of waste residue due to overheating, and ensuring that the neutralization reaction proceeds efficiently and stably.

[0027] For further details, please refer to Figure 7 As shown, a pH detection assembly 5 is provided at the lower end of the top plate 204. The pH detection assembly 5 includes a first cylinder 501 fixedly installed at the lower end of the top plate 204. A detection seat is fixedly installed at the end of the piston rod of the first cylinder 501, and a detection probe 502 is installed at the lower end of the detection seat. The first cylinder 501 drives the detection probe 502 to move down into the acidic wastewater to detect the pH value of the acidic wastewater in real time. The PLC controller then feeds back to the adjustment component 3 to dynamically adjust the feeding and air output speeds. The first cylinder 501 and the detection probe 502 are equipped with brushes on their outer sides. After the detection is completed, the flexible brushes can clean the detection probe 502 to prevent impurities from adhering to the surface of the detection probe 502 and affecting the detection accuracy.

[0028] Example 2: Based on Example 1, please refer to... Figure 8 , Figure 9As shown, a feeding assembly 6 is provided at the upper end of the reaction tank 201. The feeding assembly 6 is used to grind the alkaline waste residue into fine particles to increase the contact area with the acidic wastewater, accelerate the reaction rate, and reduce the reaction time. The feeding assembly 6 includes a crushing cylinder 601 fixedly installed at the upper end of the reaction tank 201. The crushing cylinder 601 is conical. An inverted trapezoidal feeding bin 602 is fixedly installed at the upper end of the crushing cylinder 601. Crushing rollers 603 are symmetrically rotated inside the inverted trapezoidal feeding bin 602. The two crushing rollers 603 cooperate with each other to complete the crushing of the alkaline waste residue. A motor is fixedly installed on the outside of the inverted trapezoidal feeding bin 602. The output shaft of the motor... The feed hopper 602 extends into the interior and connects to one of the crushing rollers 603. The feed hopper 602 is connected to the crushing cylinder 601. A grinding assembly 604 is installed inside the crushing cylinder 601. The grinding assembly 604 includes an adjusting screw 6041 installed inside the crushing cylinder 601. Rotating rods 6042 are fixedly installed at both the upper and lower ends of the adjusting screw 6041. The same grinding cylinder 6043 is sleeved on the outer wall of the two rotating rods 6042. The ends of the two rotating rods 6042 away from the adjusting screw 6041 extend to the outside of the grinding cylinder 6043 and are respectively connected to the lower end of the feed hopper 602 and the lower end of the crushing cylinder 601. A fixed connection is provided. Both the lower end of the inverted trapezoidal feeding hopper 602 and the lower end of the grinding cylinder 601 are equipped with crossbars. Two rotating rods 6042 are fixedly connected to the crossbars. Simultaneously, waste residue falls from both sides of the crossbars without affecting the feeding and discharging of waste residue. Both rotating rods 6042 are rotatably connected to the grinding cylinder 6043. A threaded sleeve 6044 is threadedly connected to the outer surface of the adjusting screw 6041. The lower end of the threaded sleeve 6044 is fixedly connected to the grinding cylinder 6043. A first gear 6045 is fixedly installed on the outer surface of the threaded sleeve 6044. A second gear 6046 is meshed on one side of the first gear 6045. The upper surface of the second gear 6046... A telescopic rod 6047 is provided in the middle of the surface. The telescopic rod 6047 can automatically extend or shorten as the threaded sleeve 6044 moves. A motor is connected to the upper end of the telescopic rod 6047. A fixing plate is fixedly provided on the outer surface of one of the rotating rods 6042. A motor is provided at the lower end of the fixing plate. The output shaft of the motor is connected to the telescopic rod 6047. Screws 6048 are fixedly provided at both the upper and lower ends of the grinding cylinder 6043. When the cylindrical grinding cylinder 6043 moves up and down along the rotating rod 6042, the screws 6048 can rotary cut and crush the waste particles stuck at the port, effectively preventing material accumulation and blockage, and ensuring smooth feeding and discharging. The lower end of the grinding cylinder 6043 extends to the lower end of the dome-shaped top cover 202 and is provided with a storage box 605. The lower end of the storage box 605 is connected to two feed inlets 301. In this embodiment, the alkaline waste residue is first initially crushed by two crushing rollers 603 in the trapezoidal feeding hopper 602, and then enters the conical grinding cylinder 601. The telescopic rod 6047 driven by the motor drives the second gear 6046 to rotate. The second gear 6046 meshes with the first gear 6045, causing the threaded sleeve 6044 to move along the adjusting screw 6041, which in turn drives the grinding cylinder 6043 to rotate up and down along the rotating rod 6042. This, in conjunction with the inner wall of the grinding cylinder 601, completes the fine grinding of the waste residue. The augers 6048 at the upper and lower ends of the grinding cylinder 6043 simultaneously cut the waste residue at the port to prevent blockage. Finally, the waste residue is ground into fine particles, increasing the contact area with the acidic wastewater to accelerate the reaction rate. The ground alkaline waste residue is stored in the storage box 605, and can be fed through the feed port 301.

[0029] For further details, please refer to Figure 10 As shown, a vibrating screen assembly 7 is provided at the lower end of the top plate 204. The vibrating screen assembly 7 is used to completely disperse the alkaline waste residue being fed, so that it can fully contact the acidic wastewater below. The vibrating screen assembly 7 includes mounting plates 701 fixedly installed at the lower end of the top plate 204 and on the inner wall of the reaction tank 201. Each mounting plate 701 has a sliding groove 702. The same screen plate 703 is slidably engaged in the two sliding grooves 702. The screen plate 703 is inclined, and multiple openings are made on the upper surface of the screen plate 703. Each screen has a sieve hole 704. Baffles 705 are fixedly installed on both sides of the sieve plate 703. A spring 706 is fixedly installed at one end of each of the two sliding grooves 702. One end of the spring 706 is fixedly connected to the inner wall of the sliding groove 702, and the other end is connected to the sieve plate 703. A cam 707 is fixedly installed at the lower end of the first rotating shaft 304. The cam 707 cooperates with the two symmetrical baffles 705. Guide grooves are opened on the inner side of the two baffles 705. The cam 707 cooperates with the guide grooves to complete the vibrating sieve operation. In this embodiment, when the first rotating shaft 304 rotates, it drives the lower cam 707 to rotate synchronously. The cam 707 cooperates with the guide grooves on the inner side of the baffles 705 on both sides of the screen plate 703, and uses its own eccentric characteristics to alternately push the baffles 705 on both sides, so that the inclined screen plate 703 slides back and forth along the sliding grooves 702 of the two mounting plates 701. At the same time, the spring 706 in the sliding groove 702 is compressed or stretched when the screen plate 703 moves, and the elastic restoring force assists the screen plate 703 to return to its position quickly, forming a continuous vibration effect. The alkaline waste residue falls on the vibrating screen plate 703, is completely dispersed through the screen holes 704 and slides down, so as to fully contact the acidic wastewater below.

[0030] For further details, please refer to Figure 11 , Figure 12As shown, a stirring assembly 8 is provided inside the reaction vessel 201. The stirring assembly 8 includes a cylinder fixedly installed at the lower end of the dome-shaped top cover 202. A stirring rod 801 is rotatably installed at the end of the piston rod of the cylinder. A connecting sleeve 802 is rotatably installed on the top plate 204. The stirring rod 801 extends through the connecting sleeve 802 into the interior of the reaction vessel 201 and is provided with multiple stirring blades 803. A guide groove 804 is symmetrically opened at the connection between the connecting sleeve 802 and the stirring rod 801. A guide rod 805 adapted to the guide groove 804 is symmetrically fixedly installed on the outer surface of the stirring rod 801. A third gear 806 is fixedly installed on the outer surface of the connecting sleeve 802. A fourth gear 807 is meshed on one side of the third gear 806. The fourth gear 807 is driven to rotate by a motor fixedly installed at the lower end of the dome-shaped top cover 202. The stirring rod 801 passes through the sieve plate 703, and a slot is provided on the sieve plate 703. When the sieve plate 703 moves, the slot can avoid lateral movement and motion interference with the stirring rod 801. The shaking amount of the vibrating sieve assembly 7 does not exceed the maximum limit displacement of the slot. The lower end of the stirring rod 801 is sleeved in the positioning rod, which is set on the circular base plate. When the stirring rod 801 moves up and down, its lower end moves relative to the positioning rod. The positioning rod is used to limit the lateral movement of the stirring rod 801.

[0031] In this embodiment, the fourth gear 807 is driven to rotate by the motor, and the connecting sleeve 802 is driven to rotate by the third gear 806. The connecting sleeve 802 completes the rotation of the stirring rod 801 by cooperating with the guide rod 805 and the guide groove 804. The stirring rod 801 is driven to move downward by the cylinder, which can realize the stirring of acidic wastewater at different depths. In the early stage of the reaction, the stirring rate of the stirring component 8 is increased by the PLC controller 205. As the reaction proceeds, the stirring rate gradually decreases.

[0032] The working principle of this invention: Acidic wastewater enters the reaction tank 201 through the feed pipe 203, while alkaline mining waste slag enters the feeding assembly 6 (which transports the alkaline waste slag via a lifting device or a lifting conveyor) through the inverted trapezoidal feeding hopper 602. After being crushed by the crushing roller 603 and refined by the grinding assembly 604, it is temporarily stored in the storage tank. The pH detection assembly 5 collects the pH value of the wastewater in real time and feeds it back to the PLC controller 205. The controller drives the motor of the adjustment assembly 3 to drive the drive gear 311, which in turn drives the first and second control plates 307 through meshing gears to dynamically adjust the feed inlet 301, the discharge outlet 303, and the vent 306. The overlap with the docking hole 308 precisely controls the waste residue feeding rate and the reaction gas discharge rate. The gas is collected in the gas storage box 313 and then sent to the gas treatment box 314 for neutralization. When the waste residue falls, the first rotating shaft 304 drives the cam 707 to vibrate and disperse the waste residue on the inclined screen plate 703 of the vibrating screen assembly 7. At the same time, the stirring assembly 8 drives the stirring rod 801 to rotate through gear transmission, and cooperates with the cylinder drive to achieve multi-depth stirring to enhance the reaction. The heat preservation assembly 4 maintains the optimal reaction temperature through negative pressure heat preservation and dynamic heat dissipation. After treatment, the clarified wastewater is discharged through the discharge pipe, and the precipitated waste residue is cleaned by the detachable bottom plate, achieving efficient and precise treatment throughout the process.

[0033] All components that come into contact with acidic wastewater undergo corrosion-resistant treatment. The PLC controller 205 is electrically connected to the pH detection component 5, the regulating component 3, the heat preservation component 4, and the stirring component 8. The PLC controller 205, the pH detection component 5, and the solenoid valve 406 are all existing technologies, and their components and operating principles are publicly available technologies, so they will not be explained in detail here.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A reaction device for treating acidic mine wastewater based on alkaline mine slag, characterized in that, Includes acid-base neutralization components (2); The acid-base neutralization component (2) includes a reaction vessel (201), a top plate (204) is fixedly installed at the inner top of the reaction vessel (201), an adjustment component (3) is installed on the top plate (204), the adjustment component (3) includes a feed inlet (301) symmetrically opened on the upper surface of the top plate (204), a first control plate (302) is rotatably connected to the lower end of the top plate (204), a discharge port (303) is symmetrically opened on the first control plate (302) and adapted to the feed inlet (301), a first rotating shaft (304) is fixedly installed at the lower end of the first control plate (302), and a first driven gear (305) is fixedly sleeved on the outer surface of the first rotating shaft (304). The top plate (204) has symmetrically provided air vents (306) on its upper surface. The lower end of the top plate (204) is rotatably connected to a second control plate (307). The second control plate (307) has a mating hole (308) that matches the air vent (306). The lower end of the second control plate (307) is fixedly provided with a second rotating shaft (309). The lower end of the second rotating shaft (309) is fixedly sleeved with a second driven gear (310). A driving gear (311) meshes between the first driven gear (305) and the second driven gear (310). The lower end of the top plate (204) is provided with a pH detection component (5), which includes a first cylinder (501) fixedly installed at the lower end of the top plate (204), and a detection probe (502) is provided at the lower end of the piston rod of the first cylinder (501).

2. The acidic mine wastewater treatment reaction device based on alkaline mine slag according to claim 1, characterized in that, The top of the reaction vessel (201) is equipped with a dome-shaped top cover (202), and the outer surface of the dome-shaped top cover (202) is connected to a feed pipe (203). A PLC controller (205) is provided at the upper end of the dome-shaped top cover (202).

3. The acidic mine wastewater treatment reaction device based on alkaline mine slag according to claim 1, characterized in that, A gas storage box (313) is provided on the upper surface of the top plate (204), and a conduit is provided at the upper end of the gas storage box (313). The conduit extends to the outside of the reaction tank (201) and a gas processing box (314) is provided thereon.

4. The acidic mine wastewater treatment reaction device based on alkaline mine slag according to claim 1, characterized in that, The upper end of the reaction vessel (201) is provided with a feeding assembly (6), the feeding assembly (6) includes a rolling cylinder (601) fixedly installed at the upper end of the reaction vessel (201), and an inverted trapezoidal feeding hopper (602) is fixedly installed at the upper end of the rolling cylinder (601). The inverted trapezoidal feeding hopper (602) is symmetrically rotated inside with a crushing roller (603), and the grinding assembly (604) is installed inside the rolling cylinder 601.

5. The acidic mine wastewater treatment reaction device based on alkaline mine slag according to claim 4, characterized in that, The grinding assembly (604) includes an adjusting screw (6041) disposed inside the grinding cylinder (601). The upper and lower ends of the adjusting screw (6041) are fixedly provided with rotating rods (6042). The outer walls of the two rotating rods (6042) are fitted with the same grinding cylinder (6043). The outer surface of the adjusting screw (6041) is threadedly connected with a threaded sleeve (6044), and the lower end of the threaded sleeve (6044) is fixedly connected to the grinding cylinder (6043). The outer surface of the threaded sleeve (6044) is fixedly provided with a first gear (6045), a second gear (6046) is meshed on one side of the first gear (6045), and a telescopic rod (6047) is provided in the middle of the second gear (6046).

6. The acidic mine wastewater treatment reaction device based on alkaline mine slag according to claim 5, characterized in that, The grinding cylinder (6043) is fixedly equipped with augers (6048) at both the upper and lower ends.

7. The acidic mine wastewater treatment reaction device based on alkaline mine slag according to claim 1, characterized in that, The lower end of the top plate (204) is provided with a vibrating screen assembly (7). The vibrating screen assembly (7) includes a mounting plate (701) fixedly installed on the lower end of the top plate (204) and the inner side wall of the reaction tank (201). Sliding grooves (702) are provided on both mounting plates (701). The same sieve plate (703) is slidably engaged in the two sliding grooves (702). Baffles (705) are fixedly provided on both sides of the sieve plate (703). A spring (706) connected to the sieve plate (703) is fixedly provided at one end of each of the two sliding grooves (702). A cam (707) is fixedly provided at the lower end of the first rotating shaft (304).

8. The acidic mine wastewater treatment reaction device based on alkaline mine slag according to claim 7, characterized in that, The sieve plate (703) is arranged at an angle.

9. The acidic mine wastewater treatment reaction device based on alkaline mine slag according to claim 1, characterized in that, The reaction vessel (201) is equipped with a stirring assembly (8), which includes a stirring rod (801) rotatably disposed inside the reaction vessel (201), a connecting sleeve (802) rotatably disposed on the top plate (204), and a plurality of stirring blades (803) extending through the connecting sleeve (802) into the interior of the reaction vessel (201). Guide grooves (804) are symmetrically provided at the connection between the connecting sleeve (802) and the stirring rod (801). The outer surface of the stirring rod (801) is symmetrically provided with guide rods (805) that are adapted to the guide groove (804). The outer surface of the connecting sleeve (802) is fixedly provided with a third gear (806), and a fourth gear (807) is meshed on one side of the third gear (806).

10. The acidic mine wastewater treatment reaction device based on alkaline mine slag according to claim 1, characterized in that, The outer surface of the reaction vessel (201) is provided with a heat insulation component (4). The heat insulation component (4) includes a heat insulation cover (401) sleeved on the outer surface of the reaction vessel (201). A heat insulation layer (402) is fixedly provided on the outer surface of the heat insulation cover (401). An exhaust pipe (403) is provided on the top of the heat insulation cover (401). One end of the exhaust pipe (403) is connected to a vacuum pump (404). A regulating pipe (405) is provided in the middle of the air outlet pipe (403), and a solenoid valve (406) is provided on the regulating pipe (405).

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