Waste lithium battery electrolyte wastewater treatment device

Abstract

The invention relates to the technical field of wastewater treatment, in particular to a waste lithium battery electrolyte wastewater treatment device which comprises a pretreatment box, an agent settling box is arranged on the right side of the pretreatment box, a post-treatment box is arranged on the right side of the agent settling box, a rack is arranged on the front side of the post-treatment box, and a plate-and-frame filter press is arranged on the top of the rack. The driving assembly is used for driving the two rotating grids which are arranged in a staggered mode to filter large-particle impurities in sewage, compared with a traditional lifting type grid, the blocking probability is low, when the rotating grids rotate, the impurities on the rotating grids are transferred, meanwhile, the rotating grids are automatically cleaned, and the practicability is high. A power assembly in the rotary aeration mechanism drives a main shaft and a central rotating pipe to synchronously and reversely rotate, so that a first stirring rod and a second stirring rod synchronously and reversely rotate and stir, the stirring and mixing efficiency is improved, and a rotary lifting assembly synchronously reciprocates up and down during rotation, so that up-down reciprocating stirring is realized, and the stirring and mixing efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wastewater treatment, and particularly relates to a waste lithium battery electrolyte wastewater treatment device. BACKGROUND

[0002] A lithium battery is a rechargeable battery that realizes energy storage and release through the movement of lithium ions between positive and negative electrodes. When waste lithium batteries are recycled, the waste lithium batteries are crushed, and the electrolyte flowing out contains organic solvents, lithium salts, additives, heavy metal ions and impurity ions. The impurities in the electrolyte wastewater need to be treated by a treatment device. However, the following problems exist in the treatment process: 1. After the waste lithium batteries are crushed, the wastewater contains large-particle impurities such as packaging skins and metal scraps. A grid is usually used for pretreatment. The existing grid machine does not have a self-cleaning function, so that the grid is easily blocked during long-time filtration treatment, and manual cleaning is required regularly, increasing the maintenance cost. 2. The sewage separated by the grid needs to be discharged into a sedimentation tank to add chemical agents for sedimentation treatment and filtration. During the addition of the agents, a fixed single-point addition is usually used. After the addition, long-time rotary stirring is required to ensure the sufficient mixing of the agents and the sewage. The mixing time is long, and the reaction efficiency is low. SUMMARY

[0003] The purpose of the present application is to provide a waste lithium battery electrolyte wastewater treatment device with simple structure and reasonable design to solve the above problems.

[0004] The present application achieves the above-mentioned purposes through the following technical solutions: A waste lithium battery electrolyte wastewater treatment device, comprising a pretreatment box, a medicament sedimentation tank is arranged on the right side of the pretreatment box, a post-treatment box is arranged on the right side of the medicament sedimentation tank, a rack is arranged on the front side of the post-treatment box, a plate-and-frame filter press is arranged on the top of the rack, a bottom plate is fixedly installed at the lower part inside the pretreatment box, a first partition plate is fixedly installed at the center of the top of the bottom plate, the first partition plate divides the inside of the pretreatment box into two cavities in front and back, a rotary filtration mechanism is arranged inside the cavity on the front side, and a rotary aeration mechanism is arranged on the medicament sedimentation tank. The rotary filtration mechanism comprises a driving assembly and a discharge assembly, and the driving assembly and the discharge assembly are arranged inside the pretreatment box, and the discharge assembly is arranged below the driving assembly. The rotary aeration mechanism comprises a protection box fixedly installed at the center of the top surface inside the medicament sedimentation tank, a power assembly is arranged inside the protection box, and a rotary lifting assembly is arranged below the power assembly.

[0005] Preferably, the driving assembly comprises a first servo motor fixedly installed at the rear side of the pretreatment box, a fixed shaft is fixedly installed at the output end of the first servo motor, the fixed shaft penetrates through the rear side of the pretreatment box in rotation, a driving gear is fixedly installed at the middle part of the fixed shaft, a second baffle is fixedly connected to the left side in the pretreatment box, two connecting shafts are symmetrically and rotatably penetrated through the rear side of the second baffle, a driven gear engaged with the driving gear is fixedly sleeved at the rear end of each of the two connecting shafts, a first rotating grille and a second rotating grille are fixedly installed at the front end of each of the two connecting shafts, and the first rotating grille and the second rotating grille are staggered.

[0006] Preferably, the discharging assembly comprises two installation shafts rotatably penetrated through the bottom of the rear side of the second baffle, a driven pulley is fixedly sleeved at the rear end of each of the two installation shafts, a spiral conveying shaft is fixedly installed at the front end of each of the two installation shafts, a driving pulley is fixedly sleeved at the front end of the fixed shaft, a toothed belt is commonly engaged between the driving pulley and the two driven pulleys, two arc-shaped plates are symmetrically and fixedly installed at the front side of the second baffle, the two arc-shaped plates are located below the spiral conveying shaft, an inclined plate is fixedly installed at one side of the top of each of the two arc-shaped plates, a cleaning groove is formed in each of the two inclined plates, and the cleaning grooves in the two inclined plates are distributed in cooperation with the first rotating grille and the second rotating grille, respectively.

[0007] Preferably, a shunt pipe is fixedly penetrated through the top of the front side of the pretreatment box, a plurality of water injection openings are uniformly fixedly installed at the bottom of the shunt pipe, two guide plates are symmetrically and fixedly installed at the top of the front side of the second baffle, the two guide plates are located at the bottom of the shunt pipe, a water collecting hopper is fixedly installed at the front side of the bottom of the bottom plate, a conveying pipe is fixedly installed at the center of the bottom of the water collecting hopper, a first water pump is fixedly installed at the end of the conveying pipe away from the water collecting hopper, a pipeline is fixedly installed at the output end of the first water pump, the pipeline is fixedly penetrated through the rear side of the bottom plate, the end of the pipeline away from the first water pump is located in the cavity at the rear side, a second water pump is fixedly installed at the bottom of the cavity at the rear side, a connecting pipe is fixedly installed at the output end of the second water pump, and the connecting pipe is fixedly communicated with the left side of the bottom of the medicament precipitation box.

[0008] Preferably, the power assembly comprises a second servo motor fixedly installed at the top surface in the protection box, a driving bevel gear is fixedly sleeved at the output end of the second servo motor, a main shaft is sealingly and rotatably penetrated through the bottom of the protection box, the main shaft is in a hollow structure, a second driven bevel gear engaged with the driving bevel gear is fixedly sleeved at the top of the main shaft, a central rotating pipe is sealingly and rotatably penetrated through the center of the main shaft, and a first driven bevel gear engaged with the driving bevel gear is fixedly sleeved at the top of the central rotating pipe.

[0009] Preferably, the center rotating pipe top is provided with a rotating joint, a gas conveying pipe is rotatably installed on the top of the rotating joint, the gas conveying pipe is fixedly penetrated through the top center of the medicament precipitation tank, a gas pump is fixedly installed on one side of the top of the medicament precipitation tank, the output end of the gas pump is fixedly installed with the end of the gas conveying pipe away from the rotating joint, a plurality of air holes are uniformly arranged on the center rotating pipe, a plurality of first stirring rods are uniformly fixedly installed on the outside of the main shaft, the first stirring rods are hollow, a plurality of communication holes are arranged on the main shaft and communicated with the interiors of the first stirring rods, a nozzle is fixedly communicated with the end of the first stirring rod away from the main shaft, a plurality of connecting rods are uniformly fixedly installed on the bottom of the outside of the main shaft, and the plurality of connecting rods are jointly fixedly installed with an annular cam.

[0010] Preferably, the rotating and lifting assembly comprises a fixed block slidably installed on the lower part of the center rotating pipe, a limiting sliding block is fixedly installed on the outside of the fixed block, a limiting sliding groove is arranged on the inner wall of the center rotating pipe, the limiting sliding block is slidably connected in the limiting sliding groove, a lifting rod is fixedly installed on the bottom center of the fixed block, a rotating ring is slidably sleeved on the middle and lower parts of the lifting rod, and a spring is sleeved on the upper part of the lifting rod and arranged between the fixed block and the rotating ring.

[0011] Preferably, a plurality of fixed heads are fixedly sleeved on the lifting rod, a plurality of second stirring rods are uniformly fixedly installed on the outside of each fixed head, a fixed ring is jointly fixedly installed on the second stirring rods on the outside of the fixed head located on the top, a plurality of fixed rods are fixedly installed on the top of the fixed ring, a fixed seat is fixedly installed on the top of the fixed rods, and a plurality of rollers matched with the bottom of the annular cam are rotatably installed on the top of the fixed seat.

[0012] Preferably, two limiting sliding rails are fixedly and symmetrically installed on the bottom of the medicament precipitation tank, a connecting block is slidably installed in each limiting sliding rail, a filter plate is jointly fixedly installed between the two connecting blocks, two hydraulic cylinders are fixedly and symmetrically installed on the rear side of the medicament precipitation tank, the output ends of the two hydraulic cylinders are movably penetrated through the rear side of the medicament precipitation tank and fixedly connected with the connecting block, a collecting hopper is fixedly and continuously communicated with the bottom of the rear side of the medicament precipitation tank, a sewage pipe is fixedly and continuously communicated with the rear side of the collecting hopper, and a sludge pump is fixedly installed on the collecting hopper.

[0013] Preferably, a plurality of medicament barrels are fixedly and uniformly installed on the left side of the post-treatment tank, the medicament barrels are filled with treatment medicament, a third water pump is fixedly installed in each medicament barrel, the output end of the third water pump is fixedly and continuously communicated with the top of the front side of the medicament precipitation tank through a medicament adding pipe, a fourth water pump is arranged in the rear side of the medicament precipitation tank, the output end of the fourth water pump is fixedly connected with a water conveying pipe, the end of the water conveying pipe away from the medicament precipitation tank is fixedly communicated with the rear side of the post-treatment tank, a water drainage pipe is arranged on the front side of the post-treatment tank, and an activated carbon adsorption tank is detachably installed in the post-treatment tank.

[0014] The beneficial effects of the present application are as follows: 1. This invention achieves harmless treatment of electrolyte wastewater by using bar filtration, acid-base neutralization, chemical precipitation, aeration and stirring, and activated carbon adsorption, thereby reducing the content of harmful substances in the discharged wastewater.

[0015] 2. Unlike existing technologies, this device uses a rotary filtration mechanism to drive two staggered rotary screens to filter large particles of impurities in wastewater. Compared to traditional lifting screens, it has a lower probability of clogging. As the rotary screens rotate, they pass through cleaning grooves on the inclined plates, achieving the transfer of impurities and automatic cleaning of the screens without the need for manual cleaning, thus extending the service life of the equipment. At the same time, a single motor synchronously drives the rotation of the rotary screens and the screw conveyor shaft, achieving automatic discharge simultaneously.

[0016] 3. Unlike existing technologies, the power component in the rotary aeration mechanism drives the main shaft and the central rotating pipe to rotate synchronously in opposite directions, thereby realizing synchronous reverse rotation and mixing of the first and second stirring rods, improving the mixing efficiency, ensuring uniform mixing of the agent and the sewage, and the rotary lifting component moves up and down in a synchronous reciprocating motion while rotating, realizing up and down reciprocating mixing, further improving the mixing efficiency.

[0017] 4. Unlike existing technologies, an air pump delivers outside air to the nozzles on the No. 1 stirring rod, achieving simultaneous rotation and stirring aeration. Compared to the traditional single-point aeration method, the aeration is more uniform and the aeration effect is better. Attached Figure Description

[0018] Figure 1 This is a three-dimensional first-view schematic diagram of the overall structure of the present invention; Figure 2 This is a partial sectional view of the overall structure of the present invention; Figure 3 This is a three-dimensional second-view schematic diagram of the overall structure of the present invention; Figure 4 This is a perspective view of the rotary filter mechanism, the first partition plate, and the diversion pipe of the present invention; Figure 5 This is an exploded view of the rotary filtering mechanism of the present invention; Figure 6 This is the invention Figure 5 Enlarged view of region A in the middle; Figure 7 This is a perspective view of the rotary aeration mechanism of the present invention; Figure 8 This is a partial cross-sectional view of the rotary aeration mechanism of the present invention; Figure 9 This is the invention Figure 8 Enlarged view of region B in the middle; Figure 10 is the internal structure diagram of the medicine precipitation tank of the application.

[0019] In the figure: 1, pretreatment tank; 2, medicine precipitation tank; 3, rotating filter mechanism; 31, driving assembly; 311, No. 1 servo motor; 312, driving gear; 313, driven gear; 314, connecting shaft; 315, No. 1 rotating grid; 316, No. 2 rotating grid; 32, discharging assembly; 321, driving pulley; 322, toothed belt; 323, driven pulley; 324, spiral conveying shaft; 325, arc plate; 326, cleaning groove; 327, inclined plate; 33, water collecting hopper; 34, conveying pipe; 35, No. 1 water pump; 4, medicine barrel; 5, post-treatment tank; 6, plate-and-frame filter press; 7, rack; 8, rotating aeration mechanism; 81, protection box; 82, power assembly; 821, main shaft; 822, No. 1 stirring rod; 823, nozzle; 824, No. 2 servo motor; 825, driving bevel gear; 826, No. 1 driven bevel gear; 827, No. 2 driven bevel gear; 828, central rotating pipe; 829, air hole; 83, gas conveying pipe; 84, rotating joint; 85, rotating lifting assembly; 851, roller; 852, fixed seat; 853, fixed rod; 854, fixed ring; 855, lifting rod; 856, No. 2 stirring rod; 857, fixed block; 858, rotating ring; 859, spring; 86, connecting rod; 87, annular cam; 88, communication hole; 9, No. 1 partition plate; 10, No. 2 partition plate; 11, bottom plate; 12, conveying water pipe; 13, dosing pipe; 14, water inlet; 15, guide plate; 16, shunt pipe; 17, limiting slide rail; 18, connecting block; 19, filter plate; 20, blowdown pipe; 21, hydraulic cylinder; 22, sludge pump; 23, collecting hopper; 24, connecting pipe. DETAILED DESCRIPTION

[0020] It is necessary to point out here that the following detailed description is only used to further illustrate the application, and cannot be understood as limiting the protection scope of the application. Those skilled in the art can make some non-essential improvements and adjustments to the application according to the above application content.

[0021] Embodiment: please refer to Figure 1 , Figure 2 and Figure 3The utility model provides a kind of waste lithium battery electrolyte wastewater treatment device, including pretreatment tank 1, reagent precipitation tank 2 is provided on the right side of pretreatment tank 1, post-treatment tank 5 is provided on the right side of reagent precipitation tank 2, rack 7 is provided on the front side of post-treatment tank 5, plate-frame filter press 6 is provided on the top of rack 7, bottom plate 11 is fixedly installed in the inside lower portion of pretreatment tank 1, the top center of bottom plate 11 is fixedly installed with No.

[0022] When using, waste lithium battery electrolyte wastewater enters into pretreatment tank 1 and carries out macroparticle filtration and acid-base neutralization treatment, reagent precipitation tank 2 is used to add medicament flocculation precipitation and aeration treatment to sewage, plate-frame filter press 6 is used to carry out pressure filtration treatment to filtered sludge, rotary filter mechanism 3 is filtered treatment to macroparticle impurities in sewage in the form of rotation, rotary aeration mechanism 8 is used to rotate forward and reverse, reciprocating stirring and rotary aeration, improve the sewage treatment efficiency.

[0023] Please refer to Figure 2 、 Figure 4 And Figure 5 , rotary filter mechanism 3 includes drive assembly 31 and discharge assembly 32, drive assembly 31 and discharge assembly 32 are arranged in the inside of pretreatment tank 1, discharge assembly 32 is arranged below drive assembly 31, drive assembly 31 includes No. 1 servo motor 311 fixedly installed on the back side of pretreatment tank 1, fixed shaft is fixedly installed at the output end of No. 1 servo motor 311, the fixed shaft rotates and penetrates the back side of pretreatment tank 1, driving gear 312 is fixedly installed in the middle of fixed shaft, No. 2 baffle 10 is fixedly connected to the left side in the inside of pretreatment tank 1, two connecting shafts 314 are symmetrically rotatable and penetrated through the back side of No. 2 baffle 10, driven gear 313 engaged with driving gear 312 is fixedly sleeved with two connecting shafts 314 rear end, No. 1 rotating grille 315 and No. 2 rotating grille 316 are fixedly installed at the front end of two connecting shafts 314 respectively, No. 1 rotating grille 315 and No. 2 rotating grille 316 are staggered distribution, realize the filtration of macroparticle impurities, and staggered No. 1 rotating grille 315 and No. 2 rotating grille 316 are staggered when rotating, effectively prevent blocking.

[0024] Please refer to Figure 4 、 Figure 5 And Figure 6The discharging assembly 32 comprises two mounting shafts penetrating through the bottom of the rear side of the second partition plate 10, a driven pulley 323 is fixedly sleeved at the rear end of each mounting shaft, a spiral conveying shaft 324 is fixedly installed at the front end of each mounting shaft, a discharge pipe is arranged at the position corresponding to the spiral conveying shaft 324 on the right side bottom of the pretreatment box 1, for discharging large-particle impurities, a valve is arranged on the discharge pipe, a driving pulley 321 is fixedly sleeved at the front end of the fixed shaft, a toothed belt 322 is commonly engaged between the driving pulley 321 and the two driven pulleys 323, two arc-shaped plates 325 are fixedly and symmetrically installed on the front side of the second partition plate 10, the two arc-shaped plates 325 are located below the spiral conveying shaft 324, an inclined plate 327 is fixedly installed at the top of each arc-shaped plate 325, a cleaning groove 326 is formed in each inclined plate 327, and the cleaning grooves 326 on the two inclined plates 327 are respectively and cooperatively distributed with the first rotating grid 315 and the second rotating grid 316.

[0025] Please refer to Figure 4 、 Figure 5 and Figure 6 , the shunt pipe 16 is fixedly penetrated through the top of the front side of the pretreatment box 1, a plurality of water injection openings 14 are fixedly and uniformly installed at the bottom of the shunt pipe 16, two guide plates 15 are fixedly and symmetrically installed at the top of the front side of the second partition plate 10, the two guide plates 15 are located at the bottom of the shunt pipe 16, the water collecting hopper 33 is fixedly installed at the front side of the bottom of the bottom plate 11, the conveying pipe 34 is fixedly installed at the center of the bottom of the water collecting hopper 33, the first water pump 35 is fixedly installed at the end of the conveying pipe 34 away from the water collecting hopper 33, the pipeline is fixedly penetrated through the rear side of the bottom plate 11, and the end of the pipeline away from the first water pump 35 is located inside the rear cavity, the second water pump is fixedly installed on the bottom surface inside the rear cavity, the connecting pipe 24 is fixedly installed at the output end of the second water pump, the connecting pipe 24 is fixedly communicated with the left side bottom of the medicament precipitation tank 2, the medicament filling pipe is fixedly installed at the top of the rear side of the pretreatment box 1, a valve is arranged on the medicament filling pipe, so that the neutralizing agent can be filled through the medicament filling pipe.

[0026] When in use, the waste liquid of lithium battery electrolyte is transported from outside to the shunt pipe 16, and flows out from the water inlet 14 after shunting. The first servo motor 311 is started, and the output end of the first servo motor 311 drives the fixed shaft and the driving gear 312 thereon to rotate, synchronously drives the two driven gears 313 to rotate, and indirectly drives the connecting shaft 314 and the first rotating grid 315 and the second rotating grid 316 thereon to rotate in the same direction. The first rotating grid 315 and the second rotating grid 316 are staggered, and the sewage flows onto the first rotating grid 315 and the second rotating grid 316. After the large-particle impurities are filtered, they are transported to the inclined plate 327 with the rotation of the first rotating grid 315 and the second rotating grid 316, and then enter the inside of the arc-shaped plate 325. The rotation of the fixed shaft synchronously drives the driving pulley 321 to rotate, and simultaneously drives the toothed belt 322 and the driven pulley 323 thereon to rotate, synchronously drives the spiral conveying shaft 324 to rotate, and uses the spiral conveying shaft 324 to convey and discharge the large-particle impurities. The filtered sewage is collected by the water collecting hopper 33 and then enters the conveying pipe 34. Subsequently, after being sucked by the first water pump 35, the sewage is added to the cavity at the back side of the pretreatment tank 1. At this time, the neutralizing agent is added through the agent adding pipe. The sewage after neutralization is transported to the agent precipitation tank 2 by the second water pump.

[0027] Please refer to Figure 3 Six agent barrels 4 are uniformly and fixedly installed at the left side of the post-treatment tank 5, the agent barrels 4 contain treatment agents, and a third water pump (not shown in the figure) is fixedly installed in the agent barrel 4. The output end of the third water pump is fixedly communicated with the front side and the top of the agent precipitation tank 2 through the agent adding pipe 13. A fourth water pump (not shown in the figure) is arranged at the back side in the agent precipitation tank 2. The output end of the fourth water pump is fixedly connected with the conveying water pipe 12. One end of the conveying water pipe 12 away from the agent precipitation tank 2 is fixedly communicated with the back side of the post-treatment tank 5. A drain pipe is arranged at the front side of the post-treatment tank 5. An active carbon adsorption tank (not shown in the figure) is detachably installed in the post-treatment tank 5. The active carbon adsorption tank is a conventional prior art, and is used for filtering and adsorbing the sewage after the dosing flocculation and aeration treatment.

[0028] Please refer to Figure 2 , Figure 7 and Figure 8The rotating aeration mechanism 8 comprises a protective box 81 fixedly installed at the center of the top surface inside the medicament precipitation tank 2, a power assembly 82 is arranged inside the protective box 81, a rotating lifting assembly 85 is arranged below the power assembly 82, the power assembly 82 comprises a second servo motor 824 fixedly installed at the top surface inside the protective box 81, a driving bevel gear 825 is fixedly sleeved at the output end of the second servo motor 824, a main shaft 821 is sealingly and rotatably penetrated through the bottom of the protective box 81, the main shaft 821 is in a hollow structure, a second driven bevel gear 827 meshing with the driving bevel gear 825 is fixedly sleeved at the top of the main shaft 821, a central rotating pipe 828 is sealingly and rotatably penetrated through the center inside the main shaft 821, a first driven bevel gear 826 meshing with the driving bevel gear 825 is fixedly sleeved at the top of the central rotating pipe 828.

[0029] Please refer to Figure 7 and Figure 8 , a rotating joint 84 is arranged at the top of the central rotating pipe 828, a gas conveying pipe 83 is rotatably installed at the top of the rotating joint 84, the gas conveying pipe 83 is fixedly penetrated through the center of the top of the medicament precipitation tank 2, a gas pump is fixedly installed at one side of the top of the medicament precipitation tank 2, the output end of the gas pump is fixedly installed with the end of the gas conveying pipe 83 away from the rotating joint 84, a plurality of air holes 829 are uniformly arranged on the central rotating pipe 828, a plurality of first stirring rods 822 are uniformly fixedly installed outside the main shaft 821, the first stirring rods 822 are hollow, a communication hole 88 is arranged on the main shaft 821 and communicates with the interiors of the first stirring rods 822, a nozzle 823 is fixedly communicated with the end of the first stirring rod 822 away from the main shaft 821, a plurality of connecting rods 86 are uniformly fixedly installed outside the bottom of the main shaft 821, and an annular cam 87 is commonly fixedly installed outside the plurality of connecting rods 86.

[0030] Please refer to Figure 7 , Figure 8 and Figure 9 , the rotating lifting assembly 85 comprises a fixed block 857 slidingly installed on the lower part of the central rotating pipe 828, a limiting sliding block is fixedly installed outside the fixed block 857, a limiting sliding groove is arranged on the inner wall of the central rotating pipe 828, the limiting sliding block is slidingly connected in the limiting sliding groove, a lifting rod 855 is fixedly installed at the center of the bottom of the fixed block 857, a rotating ring 858 is slidingly sleeved at the middle and lower part of the lifting rod 855, a spring 859 is sleeved on the upper part of the lifting rod 855 and is arranged between the fixed block 857 and the rotating ring 858, a plurality of fixed heads are fixedly sleeved on the lifting rod 855, a plurality of second stirring rods 856 are uniformly fixedly installed outside the fixed heads, a fixed ring 854 is commonly fixedly installed outside the second stirring rods 856 of the fixed heads at the top, a plurality of fixed rods 853 are fixedly installed at the top of the fixed ring 854, a fixed seat 852 is fixedly installed at the top of the fixed rods 853, and a roller 851 cooperating with the bottom of the annular cam 87 is rotatably installed at the top of the fixed seat 852.

[0031] When in use, the required treatment agent stored in the agent barrel 4 is delivered into the agent adding pipe 13 by the No. 3 water pump, and then added into the agent precipitation tank 2. At this time, the No. 2 servo motor 824 is started, the output end of the No. 2 servo motor 824 drives the driving bevel gear 825 to rotate, synchronously drives the No. 1 driven bevel gear 826 and the No. 2 driven bevel gear 827 to synchronously and reversely rotate, the No. 2 driven bevel gear 827 drives the main shaft 821 and the No. 1 stirring rod 822 thereon to rotate, the No. 1 stirring rod 822 is used for rotating and stirring the sewage and the agent, at the same time, the No. 1 driven bevel gear 826 drives the center rotating pipe 828 and the limiting sliding groove thereon to reversely rotate, synchronously drives the limiting sliding block and the fixed block 857 thereon to reversely rotate, at the same time, drives the lifting rod 855 and the fixed head thereon to reversely rotate, synchronously drives the No. 2 stirring rod 856 to reversely rotate, realizes the forward and reverse rotating and stirring of the sewage and the agent, improves the uniformity of the stirring, synchronously drives the fixed ring 854 and the fixed rod 853 thereon to reversely rotate, at the same time, drives the fixed seat 852 and the roller 851 thereon to reversely rotate, at the same time of rotating, when the roller 851 contacts the convex position of the annular cam 87, indirectly drives the fixed ring 854 and the lifting rod 855 thereon to move downward, at the same time, drives the No. 2 stirring rod 856 to move downward, synchronously compresses the spring 859, when the roller 851 contacts the recessed part of the annular cam 87, at this time, under the restoring force of the spring 859, indirectly drives the No. 2 stirring rod 856 to rotate upward, realizes the up and down reciprocating movement of the No. 2 stirring rod 856 while rotating, further improves the uniformity of the mixing, improves the mixing efficiency, at the same time, the air pump is started, the external air is delivered into the air conveying pipe 83, then enters into the communication hole 88 through the center rotating pipe 828 and the air hole 829, and then is sprayed out from the nozzle 823, realizes the multi-point rotating aeration.

[0032] Please refer to Figure 1 and Figure 10 , the agent precipitation tank 2 is fixedly installed with two limiting sliding rails 17 at the bottom and symmetrically left and right, the two limiting sliding rails 17 are both slidably installed with connecting blocks 18, the two connecting blocks 18 are fixedly and commonly installed with a filter plate 19, the agent precipitation tank 2 is fixedly installed with two hydraulic cylinders 21 at the back and symmetrically left and right, the output ends of the two hydraulic cylinders 21 are movably penetrated through the back of the agent precipitation tank 2 and fixedly connected with the connecting blocks 18, the agent precipitation tank 2 is fixedly and continuously communicated with a collecting hopper 23 at the back bottom, the collecting hopper 23 is fixedly and continuously communicated with a blowdown pipe 20 at the back, the collecting hopper 23 is fixedly installed with a sludge pump 22, the output end of the sludge pump 22 is located in the blowdown pipe 20, and the blowdown pipe 20 is connected with the input end of the plate and frame filter press 6 through a pipeline, the solid impurities after flocculation are delivered into the plate and frame filter press 6 for pressure filtration through the sludge pump 22.

[0033] After the flocculation and precipitation of the medicament is completed, the sewage is transported into the post-treatment tank 5 through the No. 4 water pump and the water conveying pipe 12, and is subjected to adsorption treatment by using the activated carbon adsorption tank in the post-treatment tank 5, so as to further remove harmful substances in the sewage, and then is discharged in a harmless manner from the drain pipe, and then the supernatant is discharged by using the No. 4 water pump, at this time, the hydraulic cylinder 21 is started, the output end of the hydraulic cylinder 21 is contracted, drives the connecting block 18 and the filter plate 19 thereon to move towards the direction of the drain pipe 20, and scrapes and discharges the precipitate in the medicament precipitation tank 2 from the drain pipe 20, the discharged sludge is collected by the collecting hopper 23, and then is conveyed by using the sludge pump 22, and is conveyed to the plate-and-frame filter press 6, and is subjected to pressure filtration by using the plate-and-frame filter press 6 to form a mud cake, so as to facilitate subsequent treatment.

[0034] It should be noted that the waste lithium battery electrolyte wastewater treatment device, when in use, the waste lithium battery electrolyte wastewater is transported from the outside to the flow divider 16, and after the flow is divided, it flows out from the water inlet 14. Start the No. 1 servo motor 311, the output end of the No. 1 servo motor 311 drives the fixed shaft and the driving gear 312 on it to rotate, synchronously drives the two driven gears 313 to rotate, and indirectly drives the connecting shaft 314 and the No. 1 rotating grid 315 and the No. 2 rotating grid 316 on it to rotate in the same direction. The No. 1 rotating grid 315 and the No. 2 rotating grid 316 are used to rotate and filter large particles. After the large particle impurities are filtered, they are transported to the inclined plate 327 along with the rotation of the No. 1 rotating grid 315 and the No. 2 rotating grid 316, and then enter the inside of the arc plate 325. The rotation of the fixed shaft synchronously drives the driving pulley 321 to rotate, and at the same time drives the toothed belt 322 and the driven pulley 323 on it to rotate, synchronously drives the spiral conveying shaft 324 to rotate, and uses the spiral conveying shaft 324 to convey and discharge the large particle impurities. The filtered sewage is collected by the water collector 33 and then enters the conveying pipe 34. After being sucked by the No. 1 water pump 35, it is added to the cavity inside the rear side of the pretreatment tank 1. At this time, the neutralizing agent is added for neutralization. The neutralized sewage is transported to the reagent precipitation tank 2 by the No. 2 water pump. Then start the No. 2 servo motor 824, the power assembly 82 drives the No. 1 stirring rod 822 and the No. 2 stirring rod 856 to rotate synchronously and oppositely. The No. 1 stirring rod 822 and the No. 2 stirring rod 856 are used to stir the sewage and the reagent. When the rotary lifting assembly 85 rotates, it synchronously moves up and down reciprocatingly to realize up-down reciprocating stirring, which further improves the stirring and mixing efficiency. At the same time, the air pump is started to transport the outside air to the gas conveying pipe 83, and then enter the communication hole 88 through the central rotating pipe 828 and the air hole 829, and then rotate and spray out from the nozzle 823, realizing multi-point rotary aeration. The sewage treated by aeration is transported to the post-treatment tank 5, and then adsorbed by the activated carbon adsorption tank in the post-treatment tank 5. Then harmless discharge. At this time, the hydraulic cylinder 21 is started, the output end of the hydraulic cylinder 21 is retracted, drives the connecting block 18 and the filter plate 19 on it to move towards the sewage pipe 20, and scrapes the precipitate in the reagent precipitation tank 2 from the sewage pipe 20. The discharged sludge is transported to the plate-and-frame filter press 6, and the plate-and-frame filter press 6 is used for pressure filtration to form mud cake, which is convenient for subsequent treatment.

[0035] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the patent of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application.

Claims

1. A waste and old lithium battery electrolyte wastewater treatment device, comprising a pretreatment tank (1), characterized in that: The pre-treatment box (1) is provided with a medicament precipitation tank (2) on the right side, the medicament precipitation tank (2) is provided with a post-treatment tank (5) on the right side, the post-treatment tank (5) is provided with a rack (7) on the front side, the rack (7) is provided with a plate-and-frame filter press (6) on the top, a bottom plate (11) is fixedly installed inside the pre-treatment box (1) and at the lower part, a first partition plate (9) is fixedly installed at the top of the bottom plate (11) and at the center, the first partition plate (9) separates the inside of the pre-treatment box (1) into two cavities in front and back, a rotary filtering mechanism (3) is arranged inside the cavity at the front side, and a rotary aeration mechanism (8) is arranged on the medicament precipitation tank (2); The rotary filtering mechanism (3) comprises a driving assembly (31) and a discharge assembly (32), the driving assembly (31) and the discharge assembly (32) are arranged inside the pre-treatment box (1), and the discharge assembly (32) is arranged below the driving assembly (31); The rotary aeration mechanism (8) comprises a protection box (81) fixedly installed at the center of the top surface inside the medicament precipitation tank (2), a power assembly (82) is arranged inside the protection box (81), and a rotary lifting assembly (85) is arranged below the power assembly (82).

2. The waste lithium battery electrolyte wastewater treatment device according to claim 1, characterized in that: The driving assembly (31) comprises a first servo motor (311) fixedly installed at the rear side of the pre-treatment box (1), a fixed shaft is fixedly installed at the output end of the first servo motor (311), the fixed shaft is rotatably penetrated through the rear side of the pre-treatment box (1), a driving gear (312) is fixedly installed at the middle of the fixed shaft, a second partition plate (10) is fixedly connected to the left side inside the pre-treatment box (1), two connecting shafts (314) are rotatably penetrated through the rear side of the second partition plate (10) in a symmetrical manner, a driven gear (313) engaged with the driving gear (312) is fixedly sleeved to the rear end of each of the two connecting shafts (314), a first rotary grille (315) and a second rotary grille (316) are fixedly installed at the front end of each of the two connecting shafts (314), and the first rotary grille (315) and the second rotary grille (316) are distributed in an interlaced manner.

3. The waste lithium battery electrolyte wastewater treatment device according to claim 2, characterized in that: The discharge assembly (32) comprises two installation shafts rotatably penetrated through the bottom of the rear side of the second partition plate (10), a driven pulley (323) is fixedly sleeved to the rear end of each of the two installation shafts, a spiral conveying shaft (324) is fixedly installed at the front end of each of the two installation shafts, a driving pulley (321) is fixedly sleeved to the front end of the fixed shaft, a toothed belt (322) is commonly engaged between the driving pulley (321) and the two driven pulleys (323), two arc-shaped plates (325) are fixedly installed on the front side of the second partition plate (10) in a symmetrical manner, the two arc-shaped plates (325) are located below the spiral conveying shaft (324), an inclined plate (327) is fixedly installed at one side of the top of each of the two arc-shaped plates (325), a cleaning groove (326) is formed in each of the two inclined plates (327), and the cleaning grooves (326) on the two inclined plates (327) are respectively and correspondingly distributed with the first rotary grille (315) and the second rotary grille (316).

4. The waste lithium battery electrolyte wastewater treatment device according to claim 1, characterized in that: The pre-treatment box (1) front side top fixed through the shunt pipe (16), shunt pipe (16) bottom evenly fixed installation of several water injection port (14), two partition (10) front side top fixed installation of two guide plate (15), two guide plate (15) in the shunt pipe (16) bottom, bottom plate (11) bottom front side fixed installation of water collecting hopper (33), water collecting hopper (33) bottom center fixed installation of delivery pipe (34), delivery pipe (34) away from water collecting hopper (33) one end fixed installation of a water pump (35), a water pump (35) output fixed installation of pipe, pipe fixed through the bottom plate (11) rear side, and the pipe away from a water pump (35) one end in the rear cavity, the rear cavity bottom fixed installation of two water pump, two water pump output fixed installation of connecting pipe (24), connecting pipe (24) fixed communication reagent precipitation tank (2) left side bottom.

5. The waste lithium battery electrolyte wastewater treatment device according to claim 1, characterized in that: The power assembly (82) includes a second servo motor (824) fixedly installed on the inner top surface of the protection box (81), a driving bevel gear (825) fixedly sleeved on the output end of the second servo motor (824), a main shaft (821) sealingly and rotatably penetrating through the bottom of the protection box (81), the main shaft (821) being in a hollow structure, a second driven bevel gear (827) fixedly sleeved on the top of the main shaft (821) and meshing with the driving bevel gear (825), a central rotating pipe (828) sealingly and rotatably penetrating through the center of the main shaft (821), and a first driven bevel gear (826) fixedly sleeved on the top of the central rotating pipe (828) and meshing with the driving bevel gear (825).

6. The waste lithium battery electrolyte wastewater treatment device according to claim 5, characterized in that: The central rotating pipe (828) is provided with a rotating joint (84) on the top, a gas conveying pipe (83) is rotatably installed on the top of the rotating joint (84), the gas conveying pipe (83) fixedly penetrates through the top center of the reagent precipitation tank (2), a gas pump is fixedly installed on one side of the top of the reagent precipitation tank (2), the output end of the gas pump is fixedly installed on the end of the gas conveying pipe (83) away from the rotating joint (84), a plurality of air holes (829) are evenly formed in the central rotating pipe (828), a plurality of first stirring rods (822) are fixedly installed on the outer portion of the main shaft (821), the first stirring rods (822) are hollow, a communication hole (88) is formed in the main shaft (821) and communicates with the interiors of the first stirring rods (822), a nozzle (823) is fixedly communicated with the end of the first stirring rod (822) away from the main shaft (821), a plurality of connecting rods (86) are fixedly installed on the bottom of the outer portion of the main shaft (821), and an annular cam (87) is fixedly installed on the outer portions of the plurality of connecting rods (86).

7. The waste lithium battery electrolyte wastewater treatment device according to claim 6, characterized in that: The rotating and lifting assembly (85) comprises a fixed block (857) slidingly installed on the lower part of a central rotating pipe (828), a limiting sliding block is fixedly installed outside the fixed block (857), a limiting sliding groove is formed in the inner wall of the central rotating pipe (828), the limiting sliding block is slidingly connected in the limiting sliding groove, a lifting rod (855) is fixedly installed at the bottom center of the fixed block (857), a rotating ring (858) is slidingly sleeved on the middle and lower part of the lifting rod (855), a spring (859) is sleeved on the upper part of the lifting rod (855), and the spring (859) is arranged between the fixed block (857) and the rotating ring (858).

8. The waste lithium battery electrolyte wastewater treatment device according to claim 7, characterized in that: A plurality of fixed heads are fixedly sleeved on the lifting rod (855), a plurality of second stirring rods (856) are uniformly fixedly installed outside the fixed heads, the second stirring rods (856) outside the fixed heads at the top are jointly fixedly installed with a fixed ring (854), a plurality of fixed rods (853) are fixedly installed at the top of the fixed ring (854), a fixed seat (852) is fixedly installed at the top of the fixed rods (853), and a roller (851) matched with the bottom of the annular cam (87) is rotatably installed at the top of the fixed seat (852).

9. The waste lithium battery electrolyte wastewater treatment device according to claim 1, characterized in that: The medicament precipitation tank (2) is fixedly installed with two limiting sliding rails (17) on the left and right at the bottom, the two limiting sliding rails (17) are slidingly installed with connecting blocks (18) inside, the two connecting blocks (18) are jointly fixedly installed with a filter plate (19) therebetween, the medicament precipitation tank (2) is fixedly installed with two hydraulic cylinders (21) on the left and right at the rear side, the output ends of the two hydraulic cylinders (21) are movably penetrated through the rear side of the medicament precipitation tank (2) and are fixedly connected with the connecting blocks (18), a collecting hopper (23) is fixedly and continuously communicated with the rear side of the medicament precipitation tank (2), a sewage pipe (20) is fixedly and continuously communicated with the rear side of the collecting hopper (23), and a sludge pump (22) is fixedly installed on the collecting hopper (23).

10. The waste lithium battery electrolyte wastewater treatment device according to claim 1, characterized in that: The post-treatment tank (5) is uniformly fixedly installed with a plurality of medicament barrels (4) on the left side, the medicament barrels (4) are internally filled with treatment medicament, the medicament barrels (4) are fixedly installed with third water pumps inside, the output ends of the third water pumps are fixedly and continuously communicated with the top of the front side of the medicament precipitation tank (2) through a dosing pipe (13), a fourth water pump is arranged inside the rear side of the medicament precipitation tank (2), the output end of the fourth water pump is fixedly connected with a water conveying pipe (12), the end, away from the medicament precipitation tank (2), of the water conveying pipe (12) is fixedly and continuously communicated with the rear side of the post-treatment tank (5), a drain pipe is arranged on the front side of the post-treatment tank (5), and an activated carbon adsorption tank is detachably installed inside the post-treatment tank (5).

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