A waste residue dissolving and extracting device for a sulfuric acid production system

Abstract

The application relates to the technical field of industrial waste residue treatment, and discloses a waste residue dissolving and extracting device for a sulfuric acid production system, which comprises a machine body, a feeding mechanism arranged on the machine body, a stirring and dissolving mechanism arranged on the machine body and a discharging mechanism arranged on the machine body, the stirring and dissolving mechanism comprises a tank body with a semi-circular ellipse longitudinal section vertically arranged on the machine body and a liquid outlet pipe communicated with the bottom end of the tank body, the tank body comprises a first dissolving part with a semi-circular longitudinal section, a second dissolving part with a rectangular longitudinal section and a third dissolving part with a semi-circular longitudinal section from bottom to top in sequence, a conveying belt is arranged between the first rotating wheel and the second rotating wheel, and the outer side of the conveying belt is uniformly provided with a plurality of groups of stirring pieces; the application has the effect of improving the dissolving and extracting efficiency of iron in solid waste residues.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial waste residue treatment, and particularly relates to a waste residue dissolving and extracting device for a sulfuric acid production system. BACKGROUND

[0002] In a process of producing sulfuric acid by using pyrite as raw material, a large amount of cinder is produced in the roasting process. If the solid waste residue produced in the sulfuric acid production process is stored for a long time, not only a large amount of land is occupied, but also serious pollution and harm to water system and atmosphere are caused, and a large area of farmland and forest land is destroyed.

[0003] The main component of the solid waste residue produced in the sulfuric acid production process is iron oxide (such as diiron trioxide, triiron tetroxide, etc.), and the iron can be recovered from the waste residue by using a chemical leaching method. However, the existing dissolving and leaching device usually directly guides the waste residue into a reaction tank and then adds a leaching and extracting reagent to leach and extract the iron in the waste residue. Since the waste residue is deposited at the bottom of the reaction tank, the waste residue and the reagent cannot be fully contacted, and the dissolving and extracting efficiency of the iron in the solid waste residue is affected. SUMMARY

[0004] The present application aims to provide a waste residue dissolving and extracting device for a sulfuric acid production system, which has the effect of improving the dissolving and extracting efficiency of the iron in the solid waste residue.

[0005] The above technical purpose of the present application is realized by the following technical scheme: a waste residue dissolving and extracting device for a sulfuric acid production system, which comprises a machine body, a feeding mechanism arranged on the machine body, a stirring and dissolving mechanism arranged on the machine body, and a discharging mechanism arranged on the machine body. The stirring and dissolving mechanism comprises a tank body with a longitudinal section in a semicircular elliptical shape vertically arranged on the machine body and a liquid outlet pipe communicated with the bottom end of the tank body. The tank body comprises a first dissolving part with a longitudinal section in a semicircular shape, a second dissolving part with a longitudinal section in a rectangular shape, and a third dissolving part with a longitudinal section in a semicircular shape from bottom to top. A first rotating rod and a second rotating rod are rotationally arranged on the tank body in a horizontal direction. The first rotating rod is located directly above the second rotating rod. The two ends of the first rotating rod and the second rotating rod are movably arranged through the tank body. A first motor is arranged on the machine body to drive the rotation of the first rotating rod. A first rotating wheel is arranged on the first rotating rod. A second rotating wheel is arranged on the second rotating rod. The first rotating wheel and the second rotating wheel are located in the tank body. A conveying belt is arranged between the first rotating wheel and the second rotating wheel. A plurality of groups of stirring pieces are uniformly arranged on the outer side of the conveying belt. The stirring pieces comprise a plurality of stirring rods uniformly arranged. One end of the stirring rod is movably attached to the inner wall of the tank body.

[0006] By adopting the above technical solution, when it is necessary to treat the solid waste generated during the sulfuric acid production process, the solid waste (it should be noted that the solid waste is in block form of a certain size, not in powder form) and the leaching extraction reagent are first added to the tank by the feeding mechanism. Both the solid waste and the reagent are located in the first dissolving section (it should be noted that a valve mechanism for controlling the opening and closing of the liquid outlet pipe is provided). Then, the first motor is turned on to drive the first rotating rod and the first rotating wheel to rotate. Then, the second rotating wheel and the second rotating rod are driven to rotate by the conveyor belt. During the rotation, the stirring components are driven to rotate along the semi-circular elliptical conveyor belt. As the stirring rods pass through the first dissolution section, they push the solid waste residue. However, under the influence of gravity, the solid waste residue falls between the two stirring rods, so it does not enter the second dissolution section with the stirring rods. By setting up a semi-circular elliptical tank and conveyor belt, the stirring components set on the conveyor belt can slowly pass through the first dissolution section in sequence, thereby pushing the solid waste residue and agitating the solvent, increasing the contact between the waste residue and the solvent, and thus improving the iron extraction efficiency from the solid waste residue.

[0007] A further configuration of the present invention is as follows: the conveyor belt is provided with a pusher for transferring a waste residue, the pusher includes a plurality of uniformly arranged push rods, the distance between two adjacent push rods is less than the distance between two adjacent stirring rods, the discharge mechanism includes a first discharge port opened at the top of the second dissolving section and a guide plate obliquely arranged on the first discharge port, a guide member is provided at one end of the guide plate near the tank body, the guide member is located in the tank body, the guide member includes a plurality of uniformly arranged guide rods, the central axis of the guide rods is located on the same horizontal plane as the guide plate, and both the push rods and the stirring rods can move through the space between two adjacent guide rods.

[0008] By adopting the above technical solution and setting up a pusher component, the pusher component rotates along with the conveyor belt as it drives the stirring rods. Therefore, when solid waste and solvent are added to the first dissolving section, the conveyor belt first drives multiple sets of stirring rods to slowly pass through the first dissolving section to stir the waste and solvent. During this process, the pusher rods rotate. After a certain period of dissolution and extraction of the solid waste, the pusher rods enter the first dissolving section with the conveyor belt. Since the distance between two adjacent pusher rods is less than the width of the solid waste, the evenly arranged multiple pusher rods can push the solid waste in the first dissolving section to move. Then, the solid waste moves with the pusher rods to the second dissolving section. During this process, the solvent will flow back to the first dissolving section from the gaps between the pusher rods. Subsequently, the solid waste moves with the pusher component to the third dissolving section. Under the action of gravity, the solid waste will separate from the pusher component and fall into the evenly arranged multiple pusher rods. The waste residue is fed onto a guide rod (the distance between two adjacent guide rods is less than the size of the waste residue) and moves downwards along the guide rods into the guide plate, finally falling into the corresponding receiving frame. Simultaneously, the distance between two adjacent guide rods matches the distance between the push rod and the stirring rod, allowing them to pass through the guide components. As the push rod passes through the guide components, the waste residue adhering to it is transferred to the guide rod. Therefore, as the push component rotates with the conveyor belt, it transfers the solid waste residue in the first dissolution section to the guide plate, aligning the dissolution and extraction time of the waste residue with the time it takes for the conveyor belt to complete one revolution. During rotation, the push rod automatically separates and transfers the dissolved and extracted waste residue from the solvent. New solid waste residue can then be fed into the feeding mechanism for extraction, achieving automatic separation and transfer of solid waste residue and improving the overall efficiency of the solid waste dissolution and extraction operation.

[0009] A further configuration of the present invention is as follows: a first stirring block is movably disposed on the stirring component, and the stirring rods located on the same horizontal plane all movably pass through adjacent first stirring blocks; a second stirring block is movably disposed on the pushing component, and the pushing rods all movably pass through the second stirring block; the sides of the first stirring block and the second stirring block away from the conveyor belt can both movably adhere to the inner wall of the tank; the end of the guide rod has a set distance from the conveyor belt; and the first stirring block and the second stirring block can both pass through the space between the guide rod and the conveyor belt.

[0010] By adopting the above technical solution, a first stirring block and a second stirring block are set (it should be noted that both the first and second stirring blocks are relatively thin, less than the height of the waste residue). When the stirring element is located in the first dissolving section, the first stirring block slides to the bottom of the stirring rod under the action of gravity and abuts against the inner wall of the first dissolving section. Therefore, when the stirring rod drives the first stirring block through the first dissolving section, it can push all the waste residue in the first dissolving section. During this process, after the waste residue accumulates to a certain height, it will roll to the other side of the first stirring block. Then, when the stirring rod moves upward to the arc-shaped slope of the first dissolving section, the solid waste residue falls from between the first stirring block and the two adjacent stirring rods under the action of gravity. Therefore, setting the first stirring block can greatly increase the stirring effect of the stirring rod on the waste residue, increasing... Increasing the contact between the waste residue and the solvent improves the efficiency of iron dissolution and extraction from the solid waste residue. Similarly, when the push rod is located in the first dissolution section, the second stirring block slides to the bottom of the push rod under the action of gravity and abuts against the inner wall of the first dissolution section. Therefore, when the push rod passes through the first dissolution section, it can push and transfer the waste residue attached to the inner wall of the first dissolution section, thereby ensuring that the pusher can transfer all the solid waste residue in the first dissolution section, which is convenient for subsequent dissolution and extraction of new solid waste residue. When the first stirring block or the second stirring block passes through the third dissolution section, the first stirring block and the second stirring block will move to fit against the conveyor belt under the action of gravity. Then the first stirring block or the second stirring block can pass through the gap between the guide rod and the conveyor belt, avoiding affecting the operation of the equipment.

[0011] A further provision of the present invention is that: an arc-shaped first limiting block is provided on the inner wall of the third dissolving section, the inner side of the first limiting block is at a set distance from the conveyor belt, the first limiting block is located between the first discharge port and the conveyor belt, and the ends of the first stirring block and the second stirring block can be engaged between the first limiting block and the conveyor belt.

[0012] By adopting the above technical solution, a first limiting block is set to ensure that after the stirring rod or push rod passes the highest point of the third stirring section, the first stirring block or the second stirring block will be locked between the first limiting block and the conveyor belt. This ensures that the first and second stirring blocks are in contact with the conveyor belt when passing the guide, preventing them from contacting the guide rod and affecting the operation of the equipment. At the same time, the first limiting block limits the first and second stirring blocks as they pass the guide, ensuring that they are in contact with the conveyor belt. This prevents the waste residue from falling and getting stuck in the gap between the guide rod and the conveyor belt under gravity when the push rod rotates to the top of the guide rod (because at this time, the first stirring block on the stirring rod below the push rod is in contact with the conveyor belt, which can block the gap between the guide rod and the conveyor belt).

[0013] A further configuration of the present invention is as follows: A third rotating wheel is symmetrically arranged at both ends of the first rotating rod, and a fourth rotating wheel is symmetrically arranged at both ends of the second rotating rod. Both the third and fourth rotating wheels are located on the outer side of the tank body. A synchronous belt is provided between the third rotating wheel and the adjacent fourth rotating wheel. An adjusting rod is provided on the synchronous belt. The central axis of the adjusting rod is on the same horizontal plane as the central axis of the pusher rod. A first magnetic block is provided at the end of the adjusting rod. An arc-shaped first control plate for controlling the opening and closing of the liquid outlet pipe is slidably arranged at the bottom of the first dissolving section. A first moving groove cooperating with the first control plate is provided on the first dissolving section. First control rods are symmetrically arranged on both sides of the first control plate. Second moving grooves cooperating with the first control rods are symmetrically arranged on both sides of the first dissolving section. A second magnetic block is provided at the end of the first control rod. The side of the first magnetic block closest to the tank body can movably fit against an adjacent second magnetic block.

[0014] By adopting the above technical solution, a third rotating wheel and adjusting rod are provided, so that the first rotating rod rotates simultaneously with the third rotating wheel, driving the synchronous belts located on both sides of the tank to rotate synchronously. Simultaneously, the adjusting rod is parallel to the pusher rod and their directions are the same, allowing the adjusting rod and pusher rod to move synchronously. The position of the adjusting rod outside the tank indicates the position of the pusher rod inside the tank. Therefore, when the adjusting rod rotates to the bottom of the first dissolving section, the pusher also rotates synchronously to the first dissolving section. The pusher then pushes the solid waste residue in the first dissolving section. At the same time, the first magnetic block on the adjusting rod and the second magnetic block on the first control rod are attracted together by magnetic attraction (at this time, the solid waste residue is located on the upper side of the pusher, and the pusher rotates upwards, so opening the outlet pipe will not cause the solid waste residue to be discharged from the outlet pipe). Then, the adjusting rod drives the first control rod to move along the second moving groove, thereby driving the first control plate to move along the far... Moving away from the outlet pipe causes the first control plate to separate from the outlet pipe opening, allowing the solvent to drain out. Then, the first control rod touches the top of the second moving trough, while the adjusting rod continues to rotate. The first magnetic block separates from the second magnetic block, and the second magnetic block, under gravity, drives the first control plate downwards until it touches the bottom of the second moving trough. At this point, the first control plate is above the outlet pipe, and the outlet pipe closes. Therefore, during the transfer of solid waste by the rotating pusher, the first control plate moves via the synchronously rotating adjusting rod located on the outside of the tank, achieving the discharge of solvent from the first dissolving section. This automatically separates the solid waste from the solvent after extraction and automatically discharges both, eliminating the need for workers to use filters or other devices to separate the waste from the solvent before transfer, thus improving the overall efficiency of solid waste dissolution, extraction, and transfer.

[0015] A further configuration of the present invention is as follows: the feeding mechanism includes a first feeding port located at the bottom of the second dissolving section and a second control plate slidably disposed on the second dissolving section in a vertical direction. The first feeding port is located on the side of the second dissolving section away from the first discharge port. The bottom end of the second control plate is movably attached to the bottom end of the first feeding port. Second control rods are symmetrically arranged at both ends of the second control plate. A third magnetic block is provided at the end of each second control rod. One side of the first magnetic block is movably attached to an adjacent third magnetic block. A feed plate is obliquely upwardly disposed at the bottom end of the first feeding port. A screening frame is provided on the machine body. A screening rod is rotatably mounted horizontally inside the screening frame. A second motor is mounted on the machine body to drive the screening rod to rotate. A magnetic screening roller is mounted on the screening rod. The top of the feed plate abuts against the outer wall of the magnetic screening roller. There is a set distance between the side of the magnetic screening roller away from the feed plate and the inner wall of the screening frame. A feeding hopper is connected to the top of the side of the screening frame away from the feed plate. A second discharge port is opened at the bottom of the screening frame. A first control component is provided at the bottom of the screening frame to control the opening and closing of the second discharge port. A second control component is provided at the top of the screening frame to control the opening and closing of the feeding hopper.

[0016] By adopting the above technical solution, when feeding solid waste residue, the second control component is first opened, allowing the solid waste residue to enter the screening frame from the feeding hopper. Simultaneously, the second motor is turned on, driving the magnetic screening roller to rotate slowly. During rotation, the magnetic screening roller adsorbs the solid waste residue added to the feeding hopper, adsorbing the waste residue containing iron oxides onto the surface of the magnetic screening roller. The remaining solid waste residue falls through the gap between the magnetic screening roller and the screening frame to the bottom of the screening frame. At this time, the magnetic screening roller at the bottom of the screening frame can perform secondary adsorption of the solid waste residue. Then, the magnetic screening roller with adsorbed solid waste residue rotates through the feed plate. Because the feed plate abuts against the outer wall of the magnetic screening roller, the solid waste residue adsorbed on the surface of the magnetic screening roller is transferred to the feed plate as the magnetic screening roller rotates through it. Then, when the pusher plate pushes the extracted solid waste residue upwards from the first dissolving section to the second dissolving section, the first magnetic block and the second magnetic block are in a separated state, the liquid outlet pipe is closed, and the adjusting rod causes the first magnetic block to adhere to the third magnetic block. The first and third magnetic blocks... The magnetic attraction forces are interconnected, so the adjusting rod drives the second control rod and the second control plate to move upwards, opening the first feeding port. The solid waste on the feeding plate slides downwards under gravity and enters the first dissolving section from the first feeding port. At this time, the previously extracted solid waste is located in the second dissolving section. Therefore, by setting the second control rod, the second magnetic block, etc., during the rotation of the pushing component and the adjusting rod, the pushing component pushes the extracted waste away from the first dissolving section, and the adjusting rod drives the first feeding port to open, allowing new solid waste to enter the first dissolving section. Then, solvent is introduced to continue the dissolution and extraction of solid waste. This makes the transfer of solid waste and the addition of new solid waste work together. After the solid waste is transferred, new solid waste is automatically added, greatly improving work efficiency. By setting the magnetic screening roller, screening frame, etc., the magnetic screening roller separates the magnetic waste and non-magnetic waste in the solid waste and transfers it through the feeding plate. Therefore, it is ensured that the waste entering the first dissolving section is iron-containing magnetic waste, thereby improving the extraction efficiency of iron from the solid waste.

[0017] A further configuration of the present invention is as follows: the first control component includes a third control plate slidably disposed horizontally on the second discharge port and third control rods symmetrically disposed at both ends of the third control plate; a first limiting rod is disposed horizontally on one side of the third control plate; a first limiting plate is vertically disposed on the machine body; a first limiting spring is horizontally disposed between the first limiting plate and the third control plate; the first limiting rod movably passes through the first limiting spring and the first limiting plate; the second control component includes a fourth control plate slidably disposed horizontally on the bottom end of the feeding hopper and a fourth control rod horizontally disposed on the fourth control plate. A second limiting plate is vertically installed at the top of the screening frame. A second limiting rod is horizontally installed on the side of the fourth control plate away from the feeding hopper. A second limiting spring is installed between the second limiting plate and the fourth control plate. The second limiting rod moves through the second limiting spring and the second limiting plate. Both ends of the screening rod move through the screening frame. A fifth control rod is installed at one end of the screening rod in a direction perpendicular to the central axis of the screening rod. The fifth control rod can push the third control rod to move away from the second discharge port. The fifth control rod can also push the fourth control rod to move away from the second feeding port.

[0018] By adopting the above technical solution, during the slow rotation of the screening rod and magnetic screening roller driven by the second motor, the fifth control rod located outside the screening frame also rotates slowly and synchronously. When the fifth control rod rotates to abut against the fourth control rod, it pushes the fourth control rod and the fourth control plate to move away from the feeding hopper, thus opening the connection between the feeding hopper and the screening frame. Solid waste in the feeding hopper enters the screening frame for screening. Afterward, the fifth control rod continues to rotate until it separates from the fourth control rod. Under the elastic force of the second limit spring, the fourth control rod moves towards the feeding hopper until the fourth control plate abuts against the inner wall of the feeding hopper. Then, the fifth control rod continues to rotate slowly with the magnetic screening roller. When the fifth control rod rotates to abut against the third control rod below, it pushes the third control rod and the third control plate to move away from the second discharge port, thus opening the connection between the feeding hopper and the screening frame. The second discharge port opens, and the non-magnetic waste residue screened by the magnetic screening roller falls from the second discharge port into the corresponding receiving device below. Then, the fifth control rod separates from the third control rod, and the third control rod approaches the second discharge port under the elastic force of the first limit spring until one side of the third control plate touches the inner wall of the second discharge port, and the second discharge port closes. Therefore, by setting the third control rod, the fourth control rod, etc., allows the fifth control rod to automatically push the fourth control plate and the third control plate to move as the magnetic screening roller slowly rotates, realizing the automatic opening and closing of the feeding hopper and the second discharge port, thereby realizing the automatic feeding of solid waste residue and the automatic unloading of the screened waste residue. At the same time, in conjunction with the rotation speed of the first rotating rod, the amount of solid waste residue entering the tank each time on the feeding plate is controlled, so that the various components of the entire device cooperate with each other and improve the automation level of the device.

[0019] A further configuration of the present invention is as follows: a liquid inlet pipe is horizontally connected to the side of the second dissolving section away from the first feeding port, the liquid inlet pipe being located below the first discharge port; a fifth control plate for controlling the opening and closing of the liquid inlet pipe is slidably arranged on the second dissolving section in the vertical direction; a third discharge port that can cooperate with the liquid inlet pipe is opened on the fifth control plate; a sixth control rod is symmetrically arranged at both ends of the fifth control plate; a third moving groove that cooperates with the adjacent sixth control rod is symmetrically opened on both sides of the second dissolving section in the vertical direction; when the sixth control rod abuts against the bottom end of the third moving groove, the third discharge port is located below the liquid inlet pipe; a connecting rod is horizontally arranged between the sixth control rod and the second control rod; the connecting rod is located between the outer wall of the tank and the adjacent fourth rotating wheel.

[0020] By adopting the above technical solution, when the first control rod rotates to the point where the first magnetic block and the third magnetic block attract each other, the first control rod drives the second control plate to rise, and at the same time, the connecting rod drives the sixth control rod and the fifth control plate to rise. During the rise of the fifth control plate, the third discharge port moves upward to the state of being connected to the liquid inlet pipe. The solvent enters the tank from the liquid inlet pipe through the third discharge port. At the same time, the first feeding port opens, and new solid waste enters the tank from the feeding plate. At this time, the pusher is located in the second dissolving section, and the liquid outlet pipe is in a closed state. Then, the first magnetic block and the third magnetic block separate, and the second control plate and the fifth control plate descend under the action of gravity until the sixth control rod touches the bottom of the third moving trough. Therefore, by setting up the connecting rod, the fifth control plate, etc., after the adjusting rod realizes the automatic discharge of the solvent, it drives the first control plate and the fifth control plate to move upward, realizing the automatic feeding of new solvent and solid waste. On the one hand, it eliminates the need for manual operation by workers, improving convenience. On the other hand, it coordinates the feeding process with the unloading process, making the whole process automatic and orderly, and improving the extraction efficiency of iron from solid waste.

[0021] A further configuration of the present invention is as follows: a third limiting plate is horizontally arranged on the tank body, the third limiting plate is located above the connecting rod, a third limiting spring is vertically arranged between the end of the connecting rod near the sixth control rod and the third limiting plate, a third limiting rod is vertically arranged at the bottom of the third limiting plate, the third limiting rod moves through the third limiting spring and the connecting rod, when the third limiting spring is at its original length, the sixth control rod abuts against the bottom end of the third moving groove, and the second control plate abuts against the bottom end of the first feeding port.

[0022] By adopting the above technical solution, during the process of the first magnetic block driving the third magnetic block to rise, the connecting rod drives the sixth control rod to rise, compressing the third limiting spring. Therefore, after the first magnetic block separates from the third magnetic block, the elastic force of the third limiting spring pushes the sixth control rod, the connecting rod, and the second control rod to fall until the fifth control plate and the second control plate are reset. Therefore, by setting the third limiting spring, on the one hand, the elastic force of the third limiting spring ensures that the fifth control plate and the second control plate can be reset. On the other hand, the elastic force of the third limiting spring makes the bottom of the fifth limiting plate abut against the tank body, and the bottom of the second control plate abut against the bottom of the first feeding port, ensuring that the liquid inlet pipe and the first feeding port are in a closed state.

[0023] A further feature of the present invention is that: both ends of the second rotating rod are movably fitted with reset torsion springs, the reset torsion springs are located between the outer wall of the tank and the adjacent fourth rotating wheel, one end of the reset torsion spring is fixedly connected to the adjacent first control rod, and the other end of the reset torsion spring is fixedly connected to the outer wall of the tank.

[0024] By adopting the above technical solution and setting a reset torsion spring, after the first magnetic block separates from the second magnetic block, the first control rod is pushed to move in a square shape close to the liquid outlet pipe under the elastic force of the reset torsion spring until the first control rod touches one end of the second moving groove. This ensures that after the adjusting rod pushes the first control plate to move and open the liquid outlet pipe, the first control plate can be reset, thus avoiding affecting the subsequent dissolution and extraction process of solid waste residue.

[0025] The beneficial effects of this invention are:

[0026] 1. By setting up a conveyor belt, a pusher, and a stirring rod, the stirring component on the conveyor belt can slowly pass through the first dissolution section in sequence, thereby pushing the solid waste residue and agitating the solvent, increasing the contact between the waste residue and the solvent, and thus improving the extraction efficiency of iron from the solid waste residue. At the same time, as the pusher rotates with the conveyor belt, it can transfer the solid waste residue in the first dissolution section to the guide plate, so that the dissolution and extraction time of the waste residue is matched with the time of one revolution of the conveyor belt. During the rotation of the pusher, the dissolution and extraction completed waste residue and solvent are automatically separated and transferred, realizing the automatic separation and transfer of solid waste residue, and improving the operating efficiency of the entire solid waste residue dissolution and extraction operation.

[0027] 2. By setting the first stirring block, the stirring effect of the stirring rod on the waste residue can be greatly increased, the contact between the waste residue and the solvent can be increased, and the iron dissolution and extraction efficiency in the solid waste residue can be improved. By setting the second stirring block, when the pusher rod passes through the first dissolution section, the waste residue attached to the inner wall of the first dissolution section can be pushed and transferred, thereby ensuring that the pusher can transfer all the solid waste residue in the first dissolution section, which is convenient for subsequent dissolution and extraction of new solid waste residue.

[0028] 3. The first control plate is moved by the synchronously rotating adjusting rod set on the outside of the tank, so as to realize the discharge of solvent in the first dissolving section. Thus, after the solid waste residue is extracted, the solid waste residue and solvent are automatically separated and discharged separately. There is no need for workers to use filters or other devices to separate the waste residue and solvent first and then transfer them separately, thereby improving the efficiency of the entire solid waste residue dissolving, extraction and transfer work.

[0029] 4. By setting up connecting rods, a fifth control plate, etc., after the solvent is automatically discharged by the adjusting rod, the first control plate and the fifth control plate are moved upward to realize the automatic feeding of new solvent and solid waste residue. On the one hand, it eliminates the need for manual operation by workers, improving convenience. On the other hand, it coordinates the feeding process with the unloading process, so that the whole process is carried out automatically and orderly, improving the extraction efficiency of iron from solid waste residue. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of an embodiment of a waste residue dissolution and extraction device for a sulfuric acid production system according to the present invention;

[0032] Figure 2 yes Figure 1 Enlarged diagram of A in the middle;

[0033] Figure 3 yes Figure 1 Enlarged diagram of B in the middle;

[0034] Figure 4 This is a schematic diagram of an embodiment of a waste residue dissolution and extraction device for a sulfuric acid production system according to the present invention;

[0035] Figure 5 This is a partial cross-sectional structural schematic diagram of an embodiment of a waste residue dissolution and extraction device for a sulfuric acid production system according to the present invention;

[0036] Figure 6 yes Figure 5 Enlarged diagram of C in the middle;

[0037] Figure 7 yes Figure 5 Enlarged diagram of D in the middle;

[0038] Figure 8 yes Figure 5 Enlarged diagram of E in the middle;

[0039] Figure 9 yes Figure 5 Enlarged diagram of F in the middle;

[0040] Figure 10 This is a partial cross-sectional structural schematic diagram of an embodiment of a waste residue dissolution and extraction device for a sulfuric acid production system according to the present invention;

[0041] Figure 11 yes Figure 10 A magnified diagram of G in the middle;

[0042] Figure 12 yes Figure 10 Enlarged schematic diagram of H in the middle;

[0043] Figure 13 yes Figure 10 Enlarged schematic diagram of J in the middle;

[0044] Figure 14 yes Figure 10 A magnified diagram of K in the middle.

[0045] In the diagram, 1. Machine body; 2. Feeding mechanism; 2a. First feeding port; 2b. Second control panel; 3. Stirring and dissolving mechanism; 3a. Tank; 3a1. First dissolving section; 3a2. Second dissolving section; 3a3. Third dissolving section; 3b. Discharge pipe; 4. Discharge mechanism; 4a. First discharge port; 4b. Guide plate; 5. First rotating rod; 6. Second rotating rod; 7. First motor; 8. First rotating wheel; 9. Second rotating wheel; 10. Conveyor belt; 11. Stirring rod; 12. Pushing rod; 13. Guide rod; 14. First stirring block; 15. Second stirring block; 16. First limiting block; 17. Third rotating wheel; 18. Fourth rotating wheel; 19. Synchronous belt; 20. Adjusting rod; 21. First magnetic block; 22. First control panel; 23. First moving trough; 24. First control rod; 25. Second moving trough; 26. Second... Magnetic block; 27. Second control lever; 28. Third magnetic block; 29. ​​Feed plate; 30. Screening frame; 31. Screening rod; 32. Second motor; 33. Magnetic screening roller; 34. Feeding hopper; 35. Second discharge port; 36. First control component; 36a. Third control board; 36b. Third control lever; 37. Second control component; 37a. Fourth control lever; 37b. Fourth control board; 38. First limiting rod; 39. First limiting plate; 40. First limiting spring; 41. Second limiting plate; 42. Second limiting rod; 43. Second limiting spring; 44. Fifth control lever; 45. Liquid inlet pipe; 46. Fifth control board; 47. Third discharge port; 48. Sixth control lever; 49. Third moving groove; 50. Connecting rod; 51. Third limiting plate; 52. Third limiting spring; 53. Third limiting rod; 54. Reset torsion spring. Detailed Implementation

[0046] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0047] This invention provides a waste residue dissolution and extraction device for sulfuric acid production systems, such as... Figures 1 to 14As shown, the above-mentioned technical objective of the present invention is achieved through the following technical solution: It includes a machine body 1, a feeding mechanism 2 disposed on the machine body 1, a stirring and dissolving mechanism 3 disposed on the machine body 1, and a discharging mechanism 4 disposed on the machine body 1. The stirring and dissolving mechanism 3 includes a tank 3a with a semi-circular elliptical longitudinal section vertically disposed on the machine body 1 and a liquid outlet pipe 3b connected to the bottom of the tank 3a. The tank 3a includes, from bottom to top, a first dissolving section 3a1 with a semi-circular longitudinal section, a second dissolving section 3a2 with a rectangular longitudinal section, and a third dissolving section 3a3 with a semi-circular longitudinal section. A first rotating rod 5 and a second rotating rod 6 are rotatably disposed on the tank 3a in the horizontal direction. A rotating rod 5 is located directly above the second rotating rod 6. Both ends of the first rotating rod 5 and the second rotating rod 6 movably pass through the tank 3a. A first motor 7 for driving the first rotating rod 5 to rotate is provided on the machine body 1. A first rotating wheel 8 is provided on the first rotating rod 5, and a second rotating wheel 9 is provided on the second rotating rod 6. The first rotating wheel 8 and the second rotating wheel 9 are located inside the tank 3a. A conveyor belt 10 is provided between the first rotating wheel 8 and the second rotating wheel 9. Several sets of stirring components are evenly arranged on the outer side of the conveyor belt 10. The stirring components include several evenly arranged stirring rods 11. One end of the stirring rod 11 can movably fit against the inner wall of the tank 3a.

[0048] Furthermore, the conveyor belt 10 is provided with a pusher for transferring waste residue. The pusher includes several evenly arranged push rods 12. The distance between two adjacent push rods 12 is less than the distance between two adjacent stirring rods 11. The discharge mechanism 4 includes a first discharge port 4a opened at the top of the second dissolving section 3a2 and a guide plate 4b obliquely arranged on the first discharge port 4a. A guide is provided at one end of the guide plate 4b near the tank 3a. The guide is located inside the tank 3a. The guide includes several evenly arranged guide rods 13. The central axis of the guide rods 13 is on the same horizontal plane as the guide plate 4b. Both the push rods 12 and the stirring rods 11 can move through the space between two adjacent guide rods 13.

[0049] Furthermore, a first stirring block 14 is movably disposed on the stirring component, and the stirring rods 11 located on the same horizontal plane all movably pass through adjacent first stirring blocks 14. A second stirring block 15 is movably disposed on the pushing component, and the pushing rods 12 all movably pass through the second stirring block 15. The side of the first stirring block 14 and the second stirring block 15 away from the conveyor belt 10 can be movably attached to the inner wall of the tank 3a. The end of the guide rod 13 has a set distance from the conveyor belt 10, and the first stirring block 14 and the second stirring block 15 can both pass through the guide rod 13 and the conveyor belt 10.

[0050] Furthermore, an arc-shaped first limiting block 16 is provided on the inner wall of the third dissolving section 3a3. The inner side of the first limiting block 16 is at a set distance from the conveyor belt 10. The first limiting block 16 is located between the first discharge port 4a and the conveyor belt 10. The ends of the first stirring block 14 and the second stirring block 15 can be engaged between the first limiting block 16 and the conveyor belt 10.

[0051] Furthermore, a third rotating wheel 17 is symmetrically arranged at both ends of the first rotating rod 5, and a fourth rotating wheel 18 is symmetrically arranged at both ends of the second rotating rod 6. Both the third rotating wheel 17 and the fourth rotating wheel 18 are located on the outer side of the tank body 3a. A synchronous belt 19 is arranged between the third rotating wheel 17 and the adjacent fourth rotating wheel 18. An adjusting rod 20 is arranged on the synchronous belt 19. The central axis of the adjusting rod 20 is on the same horizontal plane as the central axis of the pusher rod 12. A first magnetic block 21 is arranged at the end of the adjusting rod 20. The first dissolving section 3a1... The bottom of the container is slidably provided with an arc-shaped first control plate 22 for controlling the opening and closing of the liquid outlet pipe 3b. The first dissolving part 3a1 is provided with a first moving groove 23 that cooperates with the first control plate 22. The first control plate 22 is symmetrically provided with first control rods 24 on both sides. The first dissolving part 3a1 is symmetrically provided with second moving grooves 25 that cooperate with the first control rods 24 on both sides. The end of the first control rod 24 is provided with a second magnetic block 26. The side of the first magnetic block 21 near the container 3a can be movably attached to the adjacent second magnetic block 26.

[0052] Furthermore, the feeding mechanism 2 includes a first feeding port 2a located at the bottom of the second dissolving section 3a2 and a second control plate 2b slidably disposed on the second dissolving section 3a2 in a vertical direction. The first feeding port 2a is located on the side of the second dissolving section 3a2 away from the first discharge port 4a. The bottom end of the second control plate 2b is movably attached to the bottom end of the first feeding port 2a. Second control rods 27 are symmetrically arranged at both ends of the second control plate 2b. A third magnetic block 28 is provided at the end of the second control rod 27. One side of the first magnetic block 21 is movably attached to the adjacent third magnetic block 28. A feed plate 29 is obliquely upwardly arranged at the bottom end of the first feeding port 2a. A screening frame 30 is provided on the machine body 1. A screening rod 31 is rotatably mounted along the inner horizontal direction. A second motor 32 is mounted on the machine body 1 to drive the screening rod 31 to rotate. A magnetic screening roller 33 is mounted on the screening rod 31. The top end of the feed plate 29 abuts against the outer wall of the magnetic screening roller 33. There is a set distance between the side of the magnetic screening roller 33 away from the feed plate 29 and the inner wall of the screening frame 30. A feeding hopper 34 is connected to the top of the side of the screening frame 30 away from the feed plate 29. A second discharge port 35 is opened at the bottom of the screening frame 30. A first control element 36 for controlling the opening and closing of the second discharge port 35 is mounted at the bottom of the screening frame 30. A second control element 37 for controlling the opening and closing of the feeding hopper 34 is mounted at the top of the screening frame 30.

[0053] Further, the first control component 36 includes a third control plate 36a slidably disposed horizontally on the second discharge port 35 and third control rods 36b symmetrically disposed at both ends of the third control plate 36a. A first limiting rod 38 is disposed horizontally on one side of the third control plate 36a, and a first limiting plate 39 is vertically disposed on the machine body 1. A first limiting spring 40 is horizontally disposed between the first limiting plate 39 and the third control plate 36a. The first limiting rod 38 moves through the first limiting spring 40 and the first limiting plate 39. The second control component 37 includes a fourth control plate 37b slidably disposed horizontally on the bottom end of the feeding hopper 34 and a fourth control rod 37a horizontally disposed on the fourth control plate 37b. The screen A second limiting plate 41 is vertically arranged at the top of the selection frame 30. A second limiting rod 42 is horizontally arranged on the side of the fourth control plate 37b away from the feeding hopper 34. A second limiting spring 43 is arranged between the second limiting plate 41 and the fourth control plate 37b. The second limiting rod 42 moves through the second limiting spring 43 and the second limiting plate 41. Both ends of the screening rod 31 move through the screening frame 30. A fifth control rod 44 is arranged at one end of the screening rod 31 in a direction perpendicular to the central axis of the screening rod 31. The fifth control rod 44 can push the third control rod 36b to move away from the second discharge port 35. The fifth control rod 44 can push the fourth control rod 37a to move away from the second feeding port.

[0054] Furthermore, a liquid inlet pipe 45 is horizontally connected to the side of the second dissolving section 3a2 away from the first feeding port 2a. The liquid inlet pipe 45 is located below the first discharge port 4a. A fifth control plate 46 for controlling the opening and closing of the liquid inlet pipe 45 is slidably arranged on the second dissolving section 3a2 in the vertical direction. A third discharge port 47 that can cooperate with the liquid inlet pipe 45 is opened on the fifth control plate 46. Sixth control rods 48 are symmetrically arranged at both ends of the fifth control plate 46. Third moving grooves 49 that cooperate with the adjacent sixth control rods 48 are symmetrically opened on both sides of the second dissolving section 3a2 in the vertical direction. When the sixth control rod 48 abuts against the bottom end of the third moving groove 49, the third discharge port 47 is located below the liquid inlet pipe 45. A connecting rod 50 is horizontally arranged between the sixth control rod 48 and the second control rod 27. The connecting rod 50 is located between the outer wall of the tank 3a and the adjacent fourth rotating wheel 18.

[0055] Furthermore, a third limiting plate 51 is horizontally arranged on the tank body 3a. The third limiting plate 51 is located above the connecting rod 50. A third limiting spring 52 is vertically arranged between the end of the connecting rod 50 near the sixth control rod 48 and the third limiting plate 51. A third limiting rod 53 is vertically arranged at the bottom of the third limiting plate 51. The third limiting rod 53 moves through the third limiting spring 52 and the connecting rod 50. When the third limiting spring 52 is at its original length, the sixth control rod 48 abuts against the bottom end of the third moving groove 49, and the second control plate 2b abuts against the bottom end of the first feeding port 2a.

[0056] Furthermore, a reset torsion spring 54 is movably sleeved at both ends of the second rotating rod 6. The reset torsion spring 54 is located between the outer wall of the tank 3a and the adjacent fourth rotating wheel 18. One end of the reset torsion spring 54 is fixedly connected to the adjacent first control rod 24, and the other end of the reset torsion spring 54 is fixedly connected to the outer wall of the tank 3a.

[0057] Working process: When it is necessary to process the solid waste generated during the sulfuric acid production process, firstly, the second motor 32 is turned on, driving the magnetic screening roller 33 and the fifth control rod 44 to rotate slowly. During the rotation of the fifth control rod 44, the fourth control rod 37a is pushed first, causing the bottom of the feeding hopper 34 to open. The solid waste enters the screening frame 30 and is screened by the magnetic screening roller 33. The magnetic solid waste is transferred to the feeding plate 29, and the non-magnetic solid waste falls to the bottom of the screening frame 30. Then, the fifth control rod 44 pushes the third control rod 36b, causing the second discharge port 35 to open. The non-magnetic solid waste is discharged from the second discharge port 35. Then, the first motor 7 is turned on, driving the first rotating rod 5, the conveyor belt 10, etc. to rotate. When the adjusting rod 20 is pushed... After the feed rod 12 rotates until the first magnetic block 21 is attached to the third magnetic block 28, it drives the third magnetic block 28, the second control plate 2b, and the fifth control plate 46 to move upward, causing the first feed port 2a to open. The solid waste residue on the feed plate 29 enters the tank 3a. At the same time, the third discharge port 47 and the liquid inlet pipe 45 are connected, and the solvent used to extract the waste residue enters the tank 3a from the liquid inlet pipe 45. Then, the first magnetic block 21 separates from the third magnetic block 28, and the second control plate 2b and the fifth control plate 46 are reset under the elastic force of the third limit spring 52. The first feed port 2a and the liquid inlet pipe 45 are closed. Then, the solid waste residue and solvent are stirred by the stirring rod 11 and the first stirring block 14 of the first dissolving section 3a1 until the pusher rotates. Afterwards, the solid waste enters the first dissolving section 3a1, pushing the solid waste in the first dissolving section 3a1 to move. When the pusher moves to the side of the first dissolving section 3a1 near the first feeding port 2a, the first magnetic block 21 and the second magnetic block 26 are in contact, causing the second magnetic block 26 to move along the second moving groove 25, so that the liquid outlet pipe 3b is opened and the solvent is discharged from the liquid outlet pipe 3b. Then the first magnetic block 21 and the second magnetic block 26 separate, the first control plate 22 is reset under the elastic force of the reset torsion spring 54, the liquid outlet pipe 3b is closed, and then the pusher rod 12 pushes the solid waste into the second dissolving section 3a2. The adjusting rod 20 also drives the second control plate 2b and the fifth control plate 46 to rise through the third magnetic block 28, so that new solid waste and solvent enter the first dissolving section 3a2. In the first dissolution section 3a1, a new dissolution and extraction process is carried out. Then, while the stirring rod 11 stirs the first dissolution section 3a1, the pusher rod 12 conveys the solid waste to the third dissolution section 3a3. After the pusher rod 12 passes the highest point of the conveyor belt 10, the solid waste falls onto the guide rod 13 under the action of gravity and is discharged by the guide plate 4b. Then the pusher rod 12 passes through the gap between the guide rods 13, thereby completing the entire process of feeding, stirring and dissolving the solid waste and solvent, as well as separating and transferring the solid waste and solvent. The pusher rod 12 and the adjusting rod 20 link the entire process together in sequence, so that each process can be carried out automatically and in an orderly manner. This not only improves the extraction efficiency of iron from the solid waste, but also improves the working efficiency of the entire process.

[0058] By setting up a pusher component, as the conveyor belt 10 drives the stirring rods 11 to rotate, the pusher component rotates accordingly. Therefore, when solid waste and solvent are added to the first dissolving section 3a1, the conveyor belt 10 first drives multiple sets of stirring rods 11 to slowly pass through the first dissolving section 3a1 to stir the waste and solvent. During this process, the pusher rods 12 rotate accordingly. After a certain period of solid waste dissolution and extraction, the pusher rods 12 enter the first dissolving section 3a1 with the conveyor belt 10. Since the distance between two adjacent pusher rods 12 is less than the width of the solid waste, the multiple pusher rods 12 evenly arranged can push the solid waste in the first dissolving section 3a1 to move. Then, the solid waste moves to the second dissolving section 3a2 with the pusher rods 12. During this process, the solvent will flow back to the first dissolving section 3a1 from the gap between the pusher rods 12. Subsequently, the solid waste moves to the third dissolving section 3a3 with the pusher component. Under the action of gravity, the solid waste will separate from the pusher component and fall into the multiple evenly arranged pusher rods 12. The waste residue is fed onto the guide rod 13 (the distance between two adjacent guide rods 13 is less than the size of the waste residue), and moves downward along the guide rod 13 into the guide plate 4b, finally falling into the corresponding receiving frame. At the same time, the distance between two adjacent guide rods 13 is exactly matched with the push rod 12 and the stirring rod 11, so that the push rod 12 and the stirring rod 11 can pass through the guide component. When the push rod 12 passes through the guide component, the waste residue attached to the push rod 12 can be transferred to the guide rod 13. Therefore, during the rotation of the push component with the conveyor belt 10, the solid waste residue in the first dissolving section 3a1 can be transferred to the guide plate 4b, so that the dissolution and extraction time of the waste residue is matched with the time of one revolution of the conveyor belt 10. During the rotation of the push rod 12, the dissolution and extraction completed waste residue and solvent are automatically separated and transferred. Then, new solid waste residue can be fed from the feeding mechanism 2 for extraction, realizing the automatic separation and transfer of solid waste residue and improving the operating efficiency of the entire solid waste residue dissolution and extraction operation.

[0059] By setting a first stirring block 14 and a second stirring block 15 (it should be noted that both the first stirring block 14 and the second stirring block 15 are relatively thin, less than the height of the waste residue), when the stirring element is located in the first dissolving section 3a1, the first stirring block 14 slides to the bottom of the stirring rod 11 under the action of gravity and abuts against the inner wall of the first dissolving section 3a1. Therefore, when the stirring rod 11 drives the first stirring block 14 through the first dissolving section 3a1, it can push all the waste residue in the first dissolving section 3a1. During this process, after the waste residue accumulates to a certain height, it will roll to the other side of the first stirring block 14. Then, when the stirring rod 11 moves upward to the arc-shaped slope of the first dissolving section 3a1, the solid waste residue falls from between the first stirring block 14 and the two adjacent stirring rods 11 under the action of gravity. Therefore, setting the first stirring block 14 can greatly increase the stirring effect of the stirring rod 11 on the waste residue and increase the mixing effect of the waste residue with the solvent. The contact between the agents improves the efficiency of iron dissolution and extraction from solid waste. Similarly, when the push rod 12 is located in the first dissolution section 3a1, the second stirring block 15 slides to the bottom of the push rod 12 under the action of gravity and abuts against the inner wall of the first dissolution section 3a1. Therefore, when the push rod 12 passes through the first dissolution section 3a1, it can push and transfer the waste residue attached to the inner wall of the first dissolution section 3a1, thereby ensuring that the pusher can transfer all the solid waste residue in the first dissolution section 3a1, which is convenient for subsequent dissolution and extraction of new solid waste residue. When the first stirring block 14 or the second stirring block 15 passes through the third dissolution section 3a3, the first stirring block 14 and the second stirring block 15 will move to fit against the conveyor belt 10 under the action of gravity. Then the first stirring block 14 or the second stirring block 15 can pass through the gap between the guide rod 13 and the conveyor belt 10 to avoid affecting the operation of the equipment.

[0060] By setting the first limiting block 16, it is ensured that after the stirring rod 11 or the push rod 12 passes the highest point of the third stirring section, the first stirring block 14 or the second stirring block 15 will be engaged between the first limiting block 16 and the conveyor belt 10. This ensures that the first stirring block 14 and the second stirring block 15 are in contact with the conveyor belt 10 when passing the guide component, preventing the first stirring block 14 and the second stirring block 15 from contacting the guide rod 13 and affecting the operation of the equipment. At the same time, the first limiting block 16 limits the first stirring block 14 and the second stirring block 15 during the process of passing the guide component, so that the first stirring block 14 and the second stirring block 15 are in contact with the conveyor belt 10. This can prevent the waste residue from falling and getting stuck in the gap between the guide rod 13 and the conveyor belt 10 under the action of gravity when the push rod 12 rotates to the top of the guide rod 13 (because at this time, the first stirring block 14 on the stirring rod 11 below the push rod 12 is in contact with the conveyor belt 10, which can block the gap between the guide rod 13 and the conveyor belt 10).

[0061] By setting up a third rotating wheel 17, an adjusting rod 20, etc., the first rotating rod 5 rotates simultaneously with the synchronous belts 19 located on both outer sides of the tank 3a via the third rotating wheel 17. Meanwhile, the adjusting rod 20 is parallel to the pusher rod 12 and their directions are the same, thus allowing the adjusting rod 20 and the pusher rod 12 to move synchronously. The position of the adjusting rod 20 outside the tank 3a indicates the position of the pusher rod 12 inside the tank 3a. Therefore, when the adjusting rod 20 rotates to the bottom of the first melting section 3a1, The pusher also rotates synchronously to the first dissolving section 3a1. The pusher then pushes the solid waste residue inside the first dissolving section 3a1. Simultaneously, the first magnetic block 21 on the adjusting rod 20 and the second magnetic block 26 on the first control rod 24 are attracted together by magnetic attraction (at this time, the solid waste residue is located on the upper side of the pusher, and the pusher rotates upwards; therefore, opening the outlet pipe 3b will not cause the solid waste residue to be discharged from the outlet pipe 3b). Then, the adjusting rod 20 drives the first control rod 24 to move along the second moving groove 25, thereby driving the first control... Plate 22 moves away from the outlet pipe 3b, causing the first control plate 22 to separate from the opening of the outlet pipe 3b, opening the outlet pipe 3b and allowing solvent to drain out. Then, the first control rod 24 contacts the top of the second moving groove 25, while the adjusting rod 20 continues to rotate. The first magnetic block 21 separates from the second magnetic block 26, and the second magnetic block 26, under the influence of gravity, causes the first control plate 22 to slide downwards until it contacts the bottom of the second moving groove 25. At this point, the first control plate 22 is positioned above the outlet pipe 3b. With the liquid outlet pipe 3b closed, during the transfer of solid waste residue by rotating the pusher, the first control plate 22 is moved by the synchronously rotating adjusting rod 20 located on the outside of the tank 3a, thereby realizing the discharge of solvent in the first dissolving section 3a1. Thus, after the solid waste residue extraction is completed, the solid waste residue and solvent are automatically separated, and the solid waste residue and solvent are automatically discharged separately. There is no need for workers to use filters or other devices to separate the waste residue and solvent before transferring them separately, thereby improving the efficiency of the entire solid waste residue dissolving, extraction and transfer process.

[0062] By setting up a second control rod 27, a second magnetic block 26, etc., during the rotation of the pusher and adjusting rod 20, after the pusher pushes the extracted waste residue away from the first dissolving section 3a1, the adjusting rod 20 drives the first feeding port 2a to open, allowing new solid waste residue to enter the first dissolving section 3a1. Then, solvent is introduced to continue the dissolution and extraction of solid waste residue. This makes the transfer of solid waste residue and the addition of new solid waste residue work together. After the solid waste residue is transferred, new solid waste residue is automatically added, which greatly improves the working efficiency. By setting up a magnetic screening roller 33, a screening frame 30, etc., the magnetic screening roller 33 screens the magnetic waste residue and non-magnetic waste residue in the solid waste residue and transfers it through the feeding plate 29. Therefore, it is ensured that the first dissolving section 3a1 contains iron-containing magnetic waste residue, thereby improving the iron extraction efficiency of solid waste residue.

[0063] By setting up a third control lever 36b, a fourth control lever 37a, etc., the fifth control lever 44 automatically pushes the fourth control plate 37b and the third control plate 36a to move as the magnetic screening roller 33 slowly rotates, realizing the automatic opening and closing of the feeding hopper 34 and the second discharge port 35, thereby realizing the automatic feeding of solid waste residue and the automatic unloading of the screened waste residue. At the same time, in conjunction with the rotation speed of the first rotating rod 5, the amount of solid waste residue on the feeding plate 29 entering the tank 3a each time can be controlled, so that the various components of the entire device cooperate with each other and improve the automation level of the device.

[0064] By setting up connecting rod 50, fifth control plate 46, etc., after the solvent is automatically discharged by adjusting rod 20, the first control plate 22 and the fifth control plate 46 are driven to move upward, realizing the automatic feeding of new solvent and solid waste residue. On the one hand, it eliminates the need for manual operation by workers, improving convenience. On the other hand, it coordinates the feeding process with the unloading process, making the whole process automatic and orderly, and improving the extraction efficiency of iron from solid waste residue.

[0065] By setting a third limiting spring 52, the fifth control plate 46 and the second control plate 2b can be reset under the elastic force of the third limiting spring 52. At the same time, the elastic force of the third limiting spring 52 makes the bottom of the fifth limiting plate abut against the tank body 3a and the bottom of the second control plate 2b abut against the bottom of the first feeding port 2a, ensuring that the liquid inlet pipe 45 and the first feeding port 2a are in a closed state.

[0066] By setting a reset torsion spring 54, after the first magnetic block 21 separates from the second magnetic block 26, the first control rod 24 is pushed to move in a square shape close to the liquid outlet pipe 3b under the elastic force of the reset torsion spring 54 until the first control rod 24 touches one end of the second moving groove 25, thereby ensuring that after the adjusting rod 20 pushes the first control plate 22 to move and open the liquid outlet pipe 3b, the first control plate 22 can be reset, avoiding affecting the subsequent solid waste dissolution and extraction process.

[0067] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0068] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A waste residue dissolution and extraction device for a sulfuric acid production system, characterized in that: The system includes a body (1), a feeding mechanism (2) mounted on the body (1), a stirring and dissolving mechanism (3) mounted on the body (1), and a discharging mechanism (4) mounted on the body (1). The stirring and dissolving mechanism (3) includes a tank (3a) with a semi-circular elliptical longitudinal section, which is vertically mounted on the body (1), and a liquid outlet pipe (3b) connected to the bottom of the tank (3a). The tank (3a) includes, from bottom to top, a first dissolving section (3a1) with a semi-circular longitudinal section, a second dissolving section (3a2) with a rectangular longitudinal section, and a third dissolving section (3a3) with a semi-circular longitudinal section. A first rotating rod (5) and a second rotating rod (6) are rotatably mounted on the tank (3a) in the horizontal direction. The first rotating rod (5) is located at the second rotating rod (6). Directly above 6), both ends of the first rotating rod (5) and the second rotating rod (6) move through the tank (3a). The machine body (1) is provided with a first motor (7) for driving the first rotating rod (5) to rotate. The first rotating rod (5) is provided with a first rotating wheel (8), and the second rotating rod (6) is provided with a second rotating wheel (9). The first rotating wheel (8) and the second rotating wheel (9) are located inside the tank (3a). A conveyor belt (10) is provided between the first rotating wheel (8) and the second rotating wheel (9). Several sets of stirring components are evenly arranged on the outside of the conveyor belt (10). The stirring components include several evenly arranged stirring rods (11). One end of the stirring rod (11) can be movably attached to the inner wall of the tank (3a). The conveyor belt (10) is provided with a pusher for transferring a waste residue. The pusher includes several push rods (12) evenly arranged. The distance between two adjacent push rods (12) is less than the distance between two adjacent stirring rods (11). The discharge mechanism (4) includes a first discharge port (4a) opened at the top of the second dissolving section (3a2) and a guide plate (4b) obliquely arranged on the first discharge port (4a). The guide plate (4b) is provided with a guide at one end near the tank (3a). The guide is located inside the tank (3a). The guide includes several guide rods (13) evenly arranged. The central axis of the guide rod (13) is on the same horizontal plane as the guide plate (4b). Both the push rod (12) and the stirring rod (11) can move through the space between two adjacent guide rods (13).

2. The waste residue dissolution and extraction device for a sulfuric acid production system according to claim 1, characterized in that: A first stirring block (14) is movably disposed on the stirring component. The stirring rods (11) located on the same horizontal plane all move through the adjacent first stirring blocks (14). A second stirring block (15) is movably disposed on the pushing component. The pushing rods (12) all move through the second stirring blocks (15). The side of the first stirring block (14) and the second stirring block (15) away from the conveyor belt (10) can be movably attached to the inner wall of the tank (3a). The end of the guide rod (13) has a set distance from the conveyor belt (10). The first stirring block (14) and the second stirring block (15) can both pass through the guide rod (13) and the conveyor belt (10).

3. The waste residue dissolution and extraction device for a sulfuric acid production system according to claim 2, characterized in that: The inner wall of the third dissolving section (3a3) is provided with an arc-shaped first limiting block (16). The inner side of the first limiting block (16) is at a set distance from the conveyor belt (10). The first limiting block (16) is located between the first discharge port (4a) and the conveyor belt (10). The ends of the first stirring block (14) and the second stirring block (15) can be engaged between the first limiting block (16) and the conveyor belt (10).

4. The waste residue dissolution and extraction device for a sulfuric acid production system according to claim 1, characterized in that: The first rotating rod (5) has a third rotating wheel (17) symmetrically arranged at both ends, and the second rotating rod (6) has a fourth rotating wheel (18) symmetrically arranged at both ends. The third rotating wheel (17) and the fourth rotating wheel (18) are both located on the outside of the tank (3a). A synchronous belt (19) is arranged between the third rotating wheel (17) and the adjacent fourth rotating wheel (18). An adjusting rod (20) is arranged on the synchronous belt (19). The central axis of the adjusting rod (20) is on the same horizontal plane as the central axis of the push rod (12). A first magnetic block (21) is arranged at the end of the adjusting rod (20). The first dissolving part (3a1) The bottom of the container is slidably provided with an arc-shaped first control plate (22) for controlling the opening and closing of the liquid outlet pipe (3b). The first dissolving part (3a1) is provided with a first moving groove (23) that cooperates with the first control plate (22). The first control plate (22) is symmetrically provided with a first control rod (24) on both sides. The first dissolving part (3a1) is symmetrically provided with a second moving groove (25) that cooperates with the first control rod (24) on both sides. The end of the first control rod (24) is provided with a second magnetic block (26). The side of the first magnetic block (21) near the container (3a) can be movably attached to the adjacent second magnetic block (26).

5. The waste residue dissolution and extraction device for a sulfuric acid production system according to claim 4, characterized in that: The feeding mechanism (2) includes a first feeding port (2a) located at the bottom of the second dissolving section (3a2) and a second control plate (2b) slidably disposed on the second dissolving section (3a2) in a vertical direction. The first feeding port (2a) is located on the side of the second dissolving section (3a2) away from the first discharge port (4a). The bottom end of the second control plate (2b) is movably attached to the bottom end of the first feeding port (2a). The two ends of the second control plate (2b) are symmetrically provided with second control rods (27). The end of the second control rod (27) is provided with a third magnetic block (28). One side of the first magnetic block (21) is movably attached to the adjacent third magnetic block (28). The bottom end of the first feeding port (2a) is obliquely upwardly provided with a feed plate (29). A screening frame (30) is provided on the machine body (1). The screening frame (30) is slidably attached to the water in the middle. A screening rod (31) is provided for rotation in the horizontal direction. A second motor (32) for driving the screening rod (31) to rotate is provided on the machine body (1). A magnetic screening roller (33) is provided on the screening rod (31). The top of the feed plate (29) abuts against the outer wall of the magnetic screening roller (33). There is a set distance between the side of the magnetic screening roller (33) away from the feed plate (29) and the inner wall of the screening frame (30). A feeding hopper (34) is connected to the top of the side of the screening frame (30) away from the feed plate (29). A second discharge port (35) is opened at the bottom of the screening frame (30). A first control element (36) for controlling the opening and closing of the second discharge port (35) is provided at the bottom of the screening frame (30). A second control element (37) for controlling the opening and closing of the feeding hopper (34) is provided at the top of the screening frame (30).

6. The waste residue dissolution and extraction device for a sulfuric acid production system according to claim 5, characterized in that: The first control component (36) includes a third control plate (36a) slidably disposed on the second discharge port (35) in the horizontal direction and a third control rod (36b) symmetrically disposed at both ends of the third control plate (36a). A first limiting rod (38) is disposed on one side of the third control plate (36a) in the horizontal direction. A first limiting plate (39) is vertically disposed on the machine body (1). A first limiting spring (40) is horizontally disposed between the first limiting plate (39) and the third control plate (36a). The first limiting rod (38) moves through the first limiting spring (40) and the first limiting plate (39). The second control component (37) includes a fourth control plate (37b) slidably disposed on the bottom end of the feeding hopper (34) in the horizontal direction and a fourth control rod (37a) horizontally disposed on the fourth control plate (37b). The screening frame (30) A second limiting plate (41) is vertically arranged at the top of the fourth control plate (37b), and a second limiting rod (42) is horizontally arranged on the side away from the feeding hopper (34). A second limiting spring (43) is arranged between the second limiting plate (41) and the fourth control plate (37b). The second limiting rod (42) moves through the second limiting spring (43) and the second limiting plate (41). Both ends of the screening rod (31) move through the screening frame (30). A fifth control rod (44) is arranged at one end of the screening rod (31) in a direction perpendicular to the central axis of the screening rod (31). The fifth control rod (44) can push the third control rod (36b) to move away from the second discharge port (35). The fifth control rod (44) can push the fourth control rod (37a) to move away from the second discharge port (35).

7. The waste residue dissolution and extraction device for a sulfuric acid production system according to claim 5, characterized in that: The second dissolving section (3a2) is connected to an inlet pipe (45) in a horizontal direction on the side away from the first feed port (2a). The inlet pipe (45) is located below the first discharge port (4a). A fifth control plate (46) for controlling the opening and closing of the inlet pipe (45) is slidably arranged on the second dissolving section (3a2) in a vertical direction. The fifth control plate (46) has a third discharge port (47) that can cooperate with the inlet pipe (45). Sixth control rods (48) are symmetrically arranged at both ends of the fifth control plate (46). The second dissolving section (3a2) has symmetrically arranged third moving grooves (49) on both sides in the vertical direction, which cooperate with the adjacent sixth control rod (48). When the sixth control rod (48) touches the bottom end of the third moving groove (49), the third discharge port (47) is located below the liquid inlet pipe (45). A connecting rod (50) is arranged in the horizontal direction between the sixth control rod (48) and the second control rod (27). The connecting rod (50) is located between the outer wall of the tank (3a) and the adjacent fourth rotating wheel (18).

8. The waste residue dissolution and extraction device for a sulfuric acid production system according to claim 7, characterized in that: A third limiting plate (51) is horizontally arranged on the tank body (3a). The third limiting plate (51) is located above the connecting rod (50). A third limiting spring (52) is vertically arranged between the end of the connecting rod (50) near the sixth control rod (48) and the third limiting plate (51). A third limiting rod (53) is vertically arranged at the bottom of the third limiting plate (51). The third limiting rod (53) moves through the third limiting spring (52) and the connecting rod (50). When the third limiting spring (52) is at its original length, the sixth control rod (48) abuts against the bottom end of the third moving groove (49), and the second control plate (2b) abuts against the bottom end of the first feeding port (2a).

9. The waste residue dissolution and extraction device for a sulfuric acid production system according to claim 4, characterized in that: Both ends of the second rotating rod (6) are movably fitted with reset torsion springs (54). The reset torsion springs (54) are located between the outer wall of the tank (3a) and the adjacent fourth rotating wheel (18). One end of the reset torsion springs (54) is fixedly connected to the adjacent first control rod (24), and the other end of the reset torsion springs (54) is fixedly connected to the outer wall of the tank (3a).

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