Waste residue dissolving and extracting device for sulfuric acid production system

Abstract

The invention 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 and a liquid outlet pipe; the tank body is vertically arranged on the machine body; the longitudinal section of the tank body is semicircular and elliptical; the liquid outlet pipe is arranged at the bottom end of the tank body in a communicating manner; the tank body sequentially comprises a first dissolving part with a semicircular longitudinal section, a second dissolving part with a rectangular longitudinal section and a third dissolving part with a semicircular longitudinal section from bottom to top, a conveying belt is arranged between the first rotating wheel and the second rotating wheel, and a plurality of groups of stirring pieces are uniformly arranged on the outer side of the conveying belt; the method has the effect of improving the dissolution and extraction efficiency of iron in the solid waste residues.

Description

Technical Field

[0001] The invention relates to the technical field of industrial waste residue treatment, and in particular to a waste residue dissolving and extracting device used in a sulfuric acid production system. Background Art

[0002] In the process of producing sulfuric acid using pyrite as raw material, a large amount of slag is produced during the roasting process. If the solid waste slag produced in the sulfuric acid production process is stored for a long time, it will not only occupy a large amount of land, but also cause serious pollution and harm to the water system and the atmosphere, and destroy large tracts of farmland and forest areas.

[0003] The main component of the solid waste residue generated during the sulfuric acid production process is iron oxides (such as ferric oxide and ferroferric oxide). Chemical leaching can be used to recover iron from the waste residue. However, existing dissolution leaching equipment usually directly introduces the waste residue into a reaction tank and then adds leaching and extraction reagents to leach the iron in the waste residue. Since the waste residue will settle at the bottom of the reaction tank, the waste residue and the reagents cannot fully contact, affecting the dissolution and extraction efficiency of the iron in the solid waste residue. Summary of the Invention

[0004] The purpose of the present invention is to provide a waste residue dissolution and extraction device for a sulfuric acid production system, which has the effect of improving the dissolution and extraction efficiency of iron in solid waste residue.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: it includes a body, a feeding mechanism arranged on the body, a stirring and dissolving mechanism arranged on the body, and a discharging mechanism arranged on the body, the stirring and dissolving mechanism includes a tank body with a semicircular elliptical longitudinal section vertically arranged on the body and a liquid outlet pipe connected to the bottom end of the tank body, the tank body includes, from bottom to top, a first dissolving part with a semicircular longitudinal section, a second dissolving part with a rectangular longitudinal section, and a third dissolving part with a semicircular longitudinal section, a first rotating rod and a second rotating rod are arranged on the tank body for rotation in the horizontal direction, and the first rotating rod is a plurality of rotating rods. The movable rod is located directly above the second rotating rod, and both ends of the first rotating rod and the second rotating rod are movable through the tank body. The machine body is provided with a first motor for driving the first rotating rod to rotate, the first rotating rod is provided with a first rotating wheel, and the second rotating rod is provided with a second rotating wheel. The first rotating wheel and the second rotating wheel are located in the tank body, and a conveyor belt is provided between the first rotating wheel and the second rotating wheel. Several groups of stirring members are evenly arranged on the outside of the conveyor belt, and the stirring members include several evenly arranged stirring rods, and one end of the stirring rod can be movably fitted to the inner wall of the tank body.

[0006] By adopting the above technical solution, when the solid waste residue generated in the sulfuric acid production process needs to be processed, the solid waste residue (it should be noted that the solid waste residue is in a block of a certain size, not in a powdery state) and the leaching extraction reagent are first added into the tank body through the feeding mechanism, and the solid waste residue and the reagent are both located in the first dissolution part (it should be noted that a valve mechanism for controlling the opening and closing of the liquid outlet pipe is provided on the liquid outlet pipe). Then, the first motor is turned on to drive the first rotating rod and the first rotating wheel to rotate, and then the second rotating wheel and the second rotating rod are driven to rotate through the conveyor belt. During the rotation process, the stirring element is driven to rotate along the semicircular elliptical conveyor belt. The stirring rod pushes the solid waste residue in the process of passing through the first dissolution part, but under the action of gravity, the solid waste residue will fall from between the two stirring rods, so the solid waste residue will not enter the second dissolution part with the stirring rod; by setting a semicircular elliptical tank body, conveyor belt, etc., the stirring element set on the conveyor belt can slowly pass through the first dissolution part in turn, thereby pushing the solid waste residue and stirring the solvent, increasing the contact between the waste residue and the solvent, thereby improving the extraction efficiency of iron in the solid waste residue.

[0007] The present invention is further configured as follows: a pushing piece for transferring waste residue is provided on the conveyor belt, the pushing piece includes a plurality of evenly arranged pushing rods, the distance between two adjacent pushing rods is smaller than the distance between two adjacent stirring rods, the discharging mechanism includes a first discharge port opened at the top of the second dissolving part and a guide plate arranged obliquely downward on the first discharge port, the guide plate is provided with a guide piece at one end close to the tank body, the guide piece is located in the tank body, the guide piece includes a plurality of evenly arranged guide rods, the central axis of the guide rod and the guide plate are located in the same horizontal plane, and both the pushing rod and the stirring rod can move through between two adjacent guide rods.

[0008] By adopting the above technical solution, a pushing piece is set, and when the conveyor belt drives the stirring rod to rotate, the pushing piece is driven to rotate accordingly. Therefore, when the solid waste residue and the solvent are added to the first dissolution part, the conveyor belt first drives multiple groups of stirring rods to slowly pass through the first dissolution part in turn to stir the waste residue and the solvent. During this process, the pushing rod rotates accordingly. Then, after the solid waste residue is dissolved and extracted for a certain period of time, the pushing rod enters the first dissolution part with the conveyor belt. Since the spacing between two adjacent pushing rods is smaller than the width of the solid waste residue, the evenly arranged multiple pushing rods can push the solid waste residue in the first dissolution part to move, and then the solid waste residue moves to the second dissolution part with the pushing rod. In this process, the solvent will flow back to the first dissolution part from the gap between the pushing rods, and then the solid waste residue moves to the third dissolution part with the pushing piece. Under the action of gravity, the solid waste residue will be separated from the pushing piece and fall to the evenly arranged multiple The material is then passed through the guide member and the mixing rod is moved along the guide member so that the waste residue attached to the push rod can be transferred to the guide member. Therefore, the solid waste residue in the first dissolving part can be transferred to the guide plate during the rotation of the push rod with the conveyor belt, so that the dissolution and extraction time of the waste residue can be coordinated with the time of one cycle of the conveyor belt. During the rotation, the push rod automatically separates and transfers the dissolved and extracted waste residue from the solvent, and then new solid waste residue can be put into the loading mechanism for extraction, thereby realizing the automatic separation and transfer of solid waste residue and improving the operation efficiency of the entire solid waste residue dissolution and extraction operation.

[0009] The present invention is further configured as follows: a first stirring block is movably provided on the stirring member, and the stirring rods located on the same horizontal plane all moveably pass through the adjacent first stirring blocks; a second stirring block is movably provided on the pushing member, and the pushing rods all moveably pass through the second stirring block; the first stirring block and the second stirring block can be movably fitted to the inner wall of the tank body on one side away from the conveyor belt; a set distance is provided between the end of the guide rod and the conveyor belt, and the first stirring block and the second stirring block can both pass 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 provided (it should be noted that the first stirring block and the second stirring block are both relatively thin and smaller than the height of the waste residue). When the stirring member is located in the first dissolving portion, the first stirring block slides to the bottom of the stirring rod under the action of gravity and contacts the inner wall of the first dissolving portion. Therefore, when the stirring rod drives the first stirring block through the first dissolving portion, all the waste residue in the first dissolving portion can be pushed. In this process, after the waste residue accumulates to a certain height, it will roll to the other side of the first stirring block. After that, when the stirring rod moves upward to the arc-shaped slope surface of the first dissolving portion, the solid waste residue falls from between the first stirring block and the two adjacent stirring rods under the action of gravity. Therefore, the provision of the first stirring block can greatly increase the stirring effect of the stirring rod on the waste residue, thereby increasing the stirring effect of the stirring rod on the waste residue. Increase the contact between the waste slag and the solvent, and improve the dissolution and extraction efficiency of iron in the solid waste slag; similarly, when the pusher rod is located in the first dissolution part, the second stirring block slides to the bottom of the pusher rod under the action of gravity and contacts the inner wall of the first dissolution part. Therefore, when the pusher rod passes through the first dissolution part, the waste slag attached to the inner wall of the first dissolution part can be pushed and transferred, thereby ensuring that the pusher can transfer all the solid waste slag in the first dissolution part, facilitating the subsequent dissolution and extraction of new solid waste slag; when the first stirring block or the second stirring block passes through the third dissolution part, the first stirring block and the second stirring block will move to fit the conveyor belt under the action of gravity, and then the first stirring block or the second stirring block can pass through the gap between the guide rod and the conveyor belt to avoid affecting the operation of the equipment.

[0011] The present invention is further configured as follows: a first arc-shaped limit block is provided on the inner wall of the third dissolving part, a set distance is provided between the inner side of the first limit block and the conveyor belt, the first limit 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 limit block and the conveyor belt.

[0012] By adopting the above technical solution, a first limit block is set to ensure that after the stirring rod or the push rod passes the highest point of the third stirring part, the first stirring block or the second stirring block will be stuck between the first limit block and the conveyor belt, thereby ensuring that the first stirring block and the second stirring block are in contact with the conveyor belt when passing through the material guide member, avoiding the first stirring block and the second stirring block from colliding with the material guide rod and affecting the operation of the equipment; at the same time, the first limit block is used to limit the first stirring block and the second stirring block in the process of passing through the material guide member, so that the first stirring block and the second stirring block are in contact with the conveyor belt, which can avoid the waste residue falling and getting stuck in the gap between the material guide rod and the conveyor belt under the action of gravity when the push rod rotates to the top of the material 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 material guide rod and the conveyor belt).

[0013] The present invention is further configured as follows: a third rotating wheel is symmetrically provided at both ends of the first rotating rod, and a fourth rotating wheel is symmetrically provided at both ends of the second rotating rod, the third rotating wheel and the fourth rotating wheel are both located on the outside of the tank body, a synchronous belt is provided between the third rotating wheel and the adjacent fourth rotating wheel, and an adjusting rod is provided on the synchronous belt, the central axis of the adjusting rod and the central axis of the pushing rod are in the same horizontal plane, the end of the adjusting rod is provided with a first magnetic block, the bottom of the first dissolving part is slidingly provided with a first arc-shaped control plate for controlling the opening and closing of the liquid outlet pipe, the first dissolving part is provided with a first movable groove matching the first control plate, the first control rods are symmetrically provided on both sides of the first control plate, the second movable groove matching the first control rod is symmetrically provided on both sides of the first dissolving part, and the end of the first control rod is provided with a second magnetic block, and the side of the first magnetic block close to the tank body can movably fit into the adjacent second magnetic block.

[0014] When the adjusting rod is in the first position, the adjusting member is moved along the second moving groove so as to move the first control plate along the distance from the first dissolving portion to the bottom of the tank body. The first control plate is moved in the direction away from the liquid outlet pipe, so that the first control plate is separated from the pipe mouth of the liquid outlet pipe, the liquid outlet pipe is opened, and the solvent is discharged from the liquid outlet pipe, after which the first control rod abuts against the top of the second movable groove, and the adjusting rod continues to rotate, the first magnetic block is separated from the second magnetic block, and the second magnetic block drives the first control plate to slide downward under the action of gravity until the second magnetic block abuts against the bottom end of the second movable groove, at this time the first control plate is located above the liquid outlet pipe and the liquid outlet pipe is closed. Therefore, in the process of rotating the pushing piece to transfer the solid waste residue, the first control plate is driven to move by the synchronously rotating adjusting rod arranged on the outside of the tank body, so as to realize the discharge of the solvent in the first dissolving part, thereby automatically realizing the separation of the solid waste residue and the solvent after the solid waste residue extraction is completed, and automatically discharging the solid waste residue and the solvent separately, without the need for workers to use devices such as filters to separate the waste residue and the solvent before transferring them separately, thereby improving the work efficiency of the entire solid waste residue dissolution, extraction and transfer.

[0015] The present invention is further configured as follows: the loading mechanism includes a first loading port opened at the bottom of the second dissolving part and a second control plate slidably arranged on the second dissolving part in a vertical direction, the first loading port is located on a side of the second dissolving part away from the first discharge port, the bottom end of the second control plate can be movably fitted with the bottom end of the first loading port, second control rods are symmetrically arranged at both ends of the second control plate, a third magnetic block is arranged at the end of the second control rod, one side of the first magnetic block can be movably fitted with the adjacent third magnetic block, a feeding plate is obliquely arranged at the bottom end of the first loading port, a screening frame is arranged on the machine body, and the A screening rod is provided in the screening frame to rotate horizontally, a second motor is provided on the machine body to drive the screening rod to rotate, a magnetic screening roller is provided on the screening rod, the top of the feed plate is in contact with the outer wall of the magnetic screening roller, and 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, the top of the screening frame away from the feed plate is connected to the upper hopper, and a second discharge port is provided at the bottom of the screening frame, a first control component for controlling the opening and closing of the second discharge port is provided at the bottom of the screening frame, and a second control component for controlling the opening and closing of the upper hopper is provided at the top of the screening frame.

[0016] By adopting the above technical solution, when loading solid waste, first open the second control part, and the solid waste enters the screening frame from the loading hopper, and at the same time turn on the second motor to drive the magnetic screening roller to rotate slowly. During the rotation of the magnetic screening roller, the solid waste added in the loading hopper is adsorbed, and the waste containing iron oxides is adsorbed on the surface of the magnetic screening roller, and the remaining solid waste falls from 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 part at the bottom of the screening frame can perform secondary adsorption on the solid waste, and then the magnetic screening roller adsorbed with solid waste rotates through the feed plate. Since the feed plate contacts the outer wall of the magnetic screening roller, the solid waste adsorbed on the surface of the magnetic screening roller is transferred to the feed plate when the magnetic screening roller rotates through the feed plate. Then, when the push plate pushes the extracted solid waste to rotate upward and enter the second dissolution part from the first dissolution part, the first magnetic block and the second magnetic block are in a separated state, the liquid outlet pipe is closed, and the adjusting rod drives the first magnetic block to fit the third magnetic block. The magnetic attraction forces are connected to each other, so the adjusting rod then drives the second control rod and the second control plate to move upward, the first loading port opens, and the solid waste residue on the feed plate slides downward under the action of gravity from the first loading port into the first dissolution part. At this time, the solid waste residue extracted before is located in the second dissolution part; therefore, by setting the second control rod, the second magnetic block, etc., during the rotation of the pushing piece and the adjusting rod, after the pushing piece pushes the extracted waste residue out of the first dissolution part, the adjusting rod drives the first loading port to open, so that new solid waste residue enters the first dissolution part, and then the solvent is introduced to continue the dissolution and extraction of the solid waste residue, so that the transfer of solid waste residue and the addition of new solid waste residue are coordinated and linked to each other, and the new solid waste residue is automatically added after the solid waste residue is transferred, greatly improving work efficiency; by setting magnetic screening rollers, screening frames, etc., the magnetic screening rollers screen the magnetic waste residue and non-magnetic waste residue in the solid waste residue, and transfer them through the feed plate, thereby ensuring that the magnetic waste residue entering the first dissolution part is iron-containing, thereby improving the extraction efficiency of iron in the solid waste residue.

[0017] The present invention is further configured as follows: the first control member includes a third control plate slidingly arranged on the second discharge port in a horizontal direction and a third control rod symmetrically arranged at both ends of the third control plate, a first limit rod is provided on one side of the third control plate in a horizontal direction, a first limit plate is vertically arranged on the machine body, a first limit spring is horizontally arranged between the first limit plate and the third control plate, the first limit rod moves through the first limit spring and the first limit plate, the second control member includes a fourth control plate slidingly arranged at the bottom end of the upper hopper in a horizontal direction and a fourth control rod horizontally arranged on the fourth control plate, A second limit plate is vertically provided at the top of the screening frame, a second limit rod is horizontally provided on the side of the fourth control plate away from the loading hopper, a second limit spring is provided between the second limit plate and the fourth control plate, the second limit rod moves through the second limit spring and the second limit plate, both ends of the screening rod move through the screening frame, and a fifth control rod is provided 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 in a direction away from the second discharge port, and the fifth control rod can push the fourth control rod to move in a direction away from the second loading port.

[0018] By adopting the above technical solution, in the process of the second motor driving the screening rod and the magnetic screening roller to rotate slowly, the fifth control rod located outside the screening frame is also driven to rotate slowly synchronously. When the fifth control rod rotates to abut against the fourth control rod, the fourth control rod and the fourth control plate are pushed to move in the direction away from the upper hopper, so that the connecting port between the upper hopper and the screening frame is opened, and the solid waste in the upper hopper enters the screening frame for screening. After that, the fifth control rod continues to rotate until it is separated from the fourth control rod, and the fourth control rod moves in the direction close to the upper hopper under the elastic force of the second limit spring until the fourth control plate abuts against the inner wall of the upper hopper. After that, the fifth control rod continues to rotate slowly with the magnetic screening roller, and 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 in the direction away from the second discharge port, so that the third control rod The second discharge port is opened, and the non-magnetic waste slag screened by the magnetic screening roller falls from the second discharge port to the corresponding material receiving device below. Then the fifth control rod is separated 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 is closed; therefore, by setting the third control rod, the fourth control rod, etc., the fifth control rod automatically pushes the fourth control plate and the third control plate to move during the slow rotation of the magnetic screening roller, thereby realizing the automatic opening and closing of the hopper and the second discharge port, and then realizing the automatic loading of solid waste slag and the automatic unloading of the screened waste slag, and at the same time, cooperating with the rotation rate of the first rotating rod, the amount of solid waste slag on the feed plate entering the tank body each time is controlled, so that the various components of the entire device cooperate with each other to improve the degree of automation of the device.

[0019] The present invention is further configured as follows: a liquid inlet pipe is provided on the side of the second dissolving part away from the first feeding port in a horizontal direction, the liquid inlet pipe is located below the first discharge port, and a fifth control plate is provided on the second dissolving part for sliding in a vertical direction to control the opening and closing of the liquid inlet pipe, a third discharge port that can cooperate with the liquid inlet pipe is provided on the fifth control plate, and a sixth control rod is symmetrically provided at both ends of the fifth control plate, and a third movable groove that cooperates with the adjacent sixth control rod is symmetrically provided on both sides of the second dissolving part in a vertical direction, when the sixth control rod contacts the bottom end of the third movable groove, the third discharge port is located below the liquid inlet pipe, and a connecting rod is provided between the sixth control rod and the second control rod in a horizontal direction, and the connecting rod is located between the outer wall of the tank body 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 while driving the sixth control rod and the fifth control plate to rise through the connecting rod. During the rising process of the fifth control plate, the third discharge port moves upward to a state connected to the liquid inlet pipe, and the solvent enters the tank body from the liquid inlet pipe through the third discharge port. At the same time, the first loading port is opened, and new solid waste enters the tank body from the feeding plate. At this time, the pushing member is located in the second dissolving part and the liquid outlet pipe is in a closed state. After that, the first magnetic block is separated from the third magnetic block, and the second control plate and the fifth control plate descend under the action of gravity until the sixth control rod contacts the bottom end of the third movable groove; therefore, by providing the connecting rod, the fifth control plate, etc., after the adjusting rod realizes the automatic discharge of the solvent, the first control plate and the fifth control plate are driven to move upward to realize the automatic loading of new solvent and solid waste. On the one hand, manual operation by workers is not required, which improves convenience. At the same time, the loading process is coordinated with the unloading process, so that the entire process is carried out automatically and orderly, thereby improving the extraction efficiency of iron in solid waste.

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

[0022] By adopting the above technical solution, in the process of the first magnetic block driving the third magnetic block to rise, the sixth control rod is driven to rise through the connecting rod, compressing the third limit spring. Therefore, after the first magnetic block is separated from the third magnetic block, the sixth control rod, the connecting rod and the second control rod are pushed down under the elastic force of the third limit spring until the fifth control plate and the second control plate are reset. Therefore, by setting the third limit spring, etc., on the one hand, the fifth control plate and the second control plate can be reset under the elastic force of the third limit spring, and at the same time, the elastic force of the third limit spring makes the bottom of the fifth limit plate contact the tank body, and the bottom of the second control plate contact the bottom end of the first loading port, ensuring that the liquid inlet pipe and the first loading port are in a closed state.

[0023] The present invention is further configured as follows: both ends of the second rotating rod are movably sleeved with a return torsion spring, the return torsion spring is located between the outer wall of the tank body and the adjacent fourth rotating wheel, one end of the return torsion spring is fixedly connected to the adjacent first control rod, and the other end of the return torsion spring is fixedly connected to the outer wall of the tank body.

[0024] By adopting the above technical solution, a reset torsion spring is provided. When the first magnetic block is separated from the second magnetic block, the first control rod is pushed to move along the square close to the liquid outlet pipe under the elastic force of the reset torsion spring until the first control rod contacts one end of the second movable groove, thereby ensuring that the first control plate can be reset after the adjusting rod pushes the first control plate to move so that the liquid outlet pipe is opened, thereby avoiding affecting the subsequent dissolution and extraction process of the solid waste.

[0025] The beneficial effects of the present invention are:

[0026] 1. By arranging a conveyor belt, a pusher and a stirring rod, etc., the stirring member arranged on the conveyor belt can slowly pass through the first dissolution part in sequence, thereby pushing the solid waste residue and stirring the solvent, increasing the contact between the waste residue and the solvent, and thus improving the extraction efficiency of iron in the solid waste residue; at the same time, the pusher can transfer the solid waste residue in the first dissolution part to the guide plate during the rotation of the conveyor belt, so that the dissolution and extraction time of the waste residue is coordinated with the operation time of the conveyor belt for one week. The pusher automatically separates and transfers the waste residue and the solvent after the dissolution and extraction are completed during the rotation process, thereby realizing automatic separation and transfer of the solid waste residue and improving the operation 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 slag can be greatly increased, the contact between the waste slag and the solvent can be increased, and the dissolution and extraction efficiency of iron in the solid waste slag can be improved; by setting the second stirring block, when the pusher rod passes through the first dissolution part, the waste slag attached to the inner wall of the first dissolution part can be pushed and transferred, thereby ensuring that the pusher can transfer all the solid waste slag in the first dissolution part, which is convenient for the subsequent dissolution and extraction of new solid waste slag.

[0028] 3. The first control panel is driven to move by a synchronously rotating adjustment lever arranged on the outside of the tank body to realize the discharge of the solvent in the first dissolution part, so that the solid waste residue and the solvent are automatically separated after the solid waste residue extraction is completed, and the solid waste residue and the solvent are automatically discharged separately. There is no need for workers to use devices such as filters to separate the waste residue and the solvent before transferring them separately, thereby improving the work efficiency of the entire solid waste residue dissolution, extraction and transfer.

[0029] 4. By setting a connecting rod, a 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 to realize the automatic loading of new solvent and solid waste residue. On the one hand, workers do not need to operate manually, which improves convenience. At the same time, the loading process is coordinated with the unloading process, so that the entire process is carried out automatically and orderly, thereby improving the extraction efficiency of iron in solid waste residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 This is a 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;

[0032] Figure 2 yes Figure 1 A is an enlarged schematic diagram;

[0033] Figure 3 yes Figure 1 A magnified schematic diagram of B in the middle;

[0034] Figure 4 This is a 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;

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

[0036] Figure 6 yes Figure 5 A magnified schematic diagram of middle C;

[0037] Figure 7 yes Figure 5 A magnified schematic diagram of D in the middle;

[0038] Figure 8 yes Figure 5 Enlarged schematic diagram of E;

[0039] Figure 9 yes Figure 5 Middle F is an enlarged schematic diagram;

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

[0041] Figure 11 yes Figure 10 Enlarged schematic diagram of G in the middle;

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

[0043] Figure 13 yes Figure 10 A magnified schematic diagram of middle J;

[0044] Figure 14 yes Figure 10 Enlarged schematic diagram of K in the middle.

[0045] 1. The dissolving mechanism comprises the following parts: 1. the dissolving unit; 2. the feeding mechanism; 2a. the first feeding port; 2b. the second control panel; 3. the stirring and dissolving mechanism; 3a. the tank; 3a1. the first dissolving part; 3a2. the second dissolving part; 3a3. the third dissolving part; 3b. the liquid outlet; 4. the discharging mechanism; 4a. the first discharging port; 4b. the guide plate; 5. the first rotating rod; 6. the second rotating rod; 7. the first motor; 8. the first rotating wheel; 9. the second rotating wheel; 10. the conveyor belt; 11. the stirring rod; 12. the pushing rod; 13. the guiding rod; 14. the first stirring block; 15. the second stirring block; 16. the first limiting block; 17. the third rotating wheel; 18. the fourth rotating wheel; 19. the synchronous belt; 20. the adjusting rod; 21. the first magnetic block; 22. the first control panel; 23. the first movable groove; 24. the first control rod; 25. the second movable groove; 26. the second Magnetic block; 27. Second control rod; 28. Third magnetic block; 29. ​​Feed plate; 30. Screening frame; 31. Screening rod; 32. Second motor; 33. Magnetic screening roller; 34. Upper hopper; 35. Second discharge port; 36. First control member; 36a. Third control plate; 36b. Third control rod; 37. Second control member; 37a. Fourth control rod; 37b. Fourth control plate; 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 rod; 45. Liquid inlet pipe; 46. Fifth control plate; 47. Third discharge port; 48. Sixth control rod; 49. Third movable groove; 50. Connecting rod; 51. Third limiting plate; 52. Third limiting spring; 53. Third limiting rod; 54. Return torsion spring. DETAILED DESCRIPTION

[0046] The technical solutions of the present invention will be described clearly and completely below with reference to specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0047] The present invention provides a waste residue dissolving and extracting device for a sulfuric acid production system, such as Figures 1 to 14As shown, the above technical purpose of the present invention is achieved through the following technical solutions: it includes a body 1, a feeding mechanism 2 arranged on the body 1, a stirring and dissolving mechanism 3 arranged on the body 1, and a discharging mechanism 4 arranged on the body 1, the stirring and dissolving mechanism 3 includes a tank body 3a with a semicircular elliptical longitudinal section vertically arranged on the body 1 and a liquid outlet pipe 3b connected to the bottom end of the tank body 3a, the tank body 3a includes, from bottom to top, a first dissolving part 3a1 with a semicircular longitudinal section, a second dissolving part 3a2 with a rectangular longitudinal section, and a third dissolving part 3a3 with a semicircular longitudinal section, a first rotating rod 5 and a second rotating rod 6 are arranged on the tank body 3a to rotate in the horizontal direction, and the first and second rotating rods 5 and 6 are arranged on the tank body 3a to rotate in the horizontal direction. A rotating rod 5 is located directly above the second rotating rod 6, and both ends of the first rotating rod 5 and the second rotating rod 6 are movable through the tank body 3a. The body 1 is provided with a first motor 7 for driving the first rotating rod 5 to rotate, and 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 in the tank body 3a, and a conveyor belt 10 is provided between the first rotating wheel 8 and the second rotating wheel 9. Several groups of stirring members are evenly arranged on the outside of the conveyor belt 10, and the stirring members include several evenly arranged stirring rods 11, and one end of the stirring rod 11 can be movably fitted to the inner wall of the tank body 3a.

[0048] Furthermore, the conveyor belt 10 is provided with a pushing piece for transferring waste residue, and the pushing piece includes a number of evenly arranged pushing rods 12, and the distance between two adjacent pushing rods 12 is smaller than the distance between two adjacent stirring rods 11. The discharging mechanism 4 includes a first discharge port 4a opened at the top of the second dissolving part 3a2 and a guide plate 4b arranged obliquely downward on the first discharge port 4a, and the guide plate 4b is provided with a guide piece at one end of the guide plate 4b close to the tank body 3a, and the guide piece is located in the tank body 3a, and the guide piece includes a number of evenly arranged guide rods 13, and the central axis of the guide rod 13 is located in the same horizontal plane as the guide plate 4b, and the pushing rod 12 and the stirring rod 11 can both move through between two adjacent guide rods 13.

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

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

[0051] Furthermore, a third rotating wheel 17 is symmetrically provided at both ends of the first rotating rod 5, and a fourth rotating wheel 18 is symmetrically provided at both ends of the second rotating rod 6. The third rotating wheel 17 and the fourth rotating wheel 18 are both located on the outside of the tank body 3a. A synchronous belt 19 is provided between the third rotating wheel 17 and the adjacent fourth rotating wheel 18. An adjusting rod 20 is provided on the synchronous belt 19. The central axis of the adjusting rod 20 is in the same horizontal plane as the central axis of the pushing rod 12. A first magnetic block 21 is provided at the end of the adjusting rod 20. The first dissolving portion 3a1 A first arc-shaped control plate 22 for controlling the opening and closing of the liquid outlet tube 3b is slidingly provided at the bottom, a first movable groove 23 cooperating with the first control plate 22 is provided on the first dissolving part 3a1, first control rods 24 are symmetrically provided on both sides of the first control plate 22, second movable grooves 25 cooperating with the first control rod 24 are symmetrically provided on both sides of the first dissolving part 3a1, a second magnetic block 26 is provided at the end of the first control rod 24, and the first magnetic block 21 close to the side of the tank body 3a can be movably fitted to the adjacent second magnetic block 26.

[0052] Furthermore, the feeding mechanism 2 includes a first feeding port 2a opened at the bottom of the second dissolving part 3a2 and a second control plate 2b slidably arranged on the second dissolving part 3a2 in the vertical direction, the first feeding port 2a is located on the side of the second dissolving part 3a2 away from the first discharge port 4a, the bottom end of the second control plate 2b can be movably fitted to the bottom end of the first feeding port 2a, second control rods 27 are symmetrically provided 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 can be movably fitted to the adjacent third magnetic block 28, a feeding plate 29 is provided obliquely upward at the bottom end of the first feeding port 2a, and a screening frame 30 is provided on the machine body 1. A screening rod 31 is provided for rotating horizontally inside, and 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, and the top of the feed plate 29 is in contact with 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. The top of the screening frame 30 away from the feed plate 29 is connected to the upper hopper 34, and a second discharge port 35 is provided at the bottom of the screening frame 30. A first control component 36 for controlling the opening and closing of the second discharge port 35 is provided at the bottom of the screening frame 30, and a second control component 37 for controlling the opening and closing of the upper hopper 34 is provided at the top of the screening frame 30.

[0053] Furthermore, the first control member 36 includes a third control plate 36a slidably arranged on the second discharge port 35 in the horizontal direction and a third control rod 36b symmetrically arranged at both ends of the third control plate 36a, a first limit rod 38 is horizontally arranged on one side of the third control plate 36a, a first limit plate 39 is vertically arranged on the body 1, a first limit spring 40 is horizontally arranged between the first limit plate 39 and the third control plate 36a, the first limit rod 38 moves through the first limit spring 40 and the first limit plate 39, the second control member 37 includes a fourth control plate 37b slidably arranged on the bottom end of the upper hopper 34 in the horizontal direction and a fourth control rod 37a horizontally arranged on the fourth control plate 37b, the screen A second limit plate 41 is vertically provided at the top of the selection frame 30, and a second limit rod 42 is horizontally provided on the side of the fourth control plate 37b away from the loading hopper 34. A second limit spring 43 is provided between the second limit plate 41 and the fourth control plate 37b, and the second limit rod 42 moves through the second limit spring 43 and the second limit plate 41. Both ends of the screening rod 31 move through the screening frame 30, and one end of the screening rod 31 is provided with a fifth control rod 44 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 in a direction away from the second discharge port 35, and the fifth control rod 44 can push the fourth control rod 37a to move in a direction away from the second loading port.

[0054] Furthermore, a liquid inlet pipe 45 is provided on the side of the second dissolving section 3a2 away from the first loading port 2a in a horizontal direction, and the liquid inlet pipe 45 is located below the first discharge port 4a. A fifth control plate 46 is provided on the second dissolving section 3a2 for slidingly sliding in the vertical direction to control the opening and closing of the liquid inlet pipe 45. The fifth control plate 46 is provided with a third discharge port 47 that can cooperate with the liquid inlet pipe 45. Sixth control rods 48 are symmetrically provided at both ends of the fifth control plate 46. Third movable grooves 49 that cooperate with the adjacent sixth control rods 48 are symmetrically provided on both sides of the second dissolving section 3a2 in the vertical direction. When the sixth control rod 48 contacts the bottom end of the third movable groove 49, the third discharge port 47 is located below the liquid inlet pipe 45. A connecting rod 50 is provided horizontally 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 body 3a and the adjacent fourth rotating wheel 18.

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

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

[0057] Working process: When it is necessary to process the solid waste generated in the sulfuric acid production process, first turn on the second motor 32 to drive the magnetic screening roller 33 and the fifth control rod 44 to rotate slowly. During the rotation of the fifth control rod 44, first push the fourth control rod 37a to open the bottom of the upper hopper 34, and 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 feed 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 to open the second discharge port 35, and the non-magnetic solid waste is discharged from the second discharge port 35. Then turn on the first motor 7 to drive the first rotating rod 5, the conveyor belt 10, etc. to rotate. When the adjusting rod 20 is pushed After the feeding 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, so that the first feeding port 2a is opened, and the solid waste on the feeding plate 29 enters the tank body 3a. At the same time, the third discharge port 47 is connected to the liquid inlet pipe 45, and the solvent for extracting the waste enters the tank body 3a from the liquid inlet pipe 45. Then, the first magnetic block 21 is separated 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 feeding port 2a and the liquid inlet pipe 45 are closed. Then, the stirring rod 11 of the first dissolving part 3a1 and the first stirring block 14 stir the solid waste and the solvent until the pushing piece rotates one After the first dissolution part 3a1 is opened, the solid waste residue in the first dissolution part 3a1 is pushed to move. When the pushing piece moves to the side of the first dissolution part 3a1 close to the first loading port 2a, the first magnetic block 21 is fitted with the second magnetic block 26, driving 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. After that, the first magnetic block 21 is separated from the second magnetic block 26, and the first control plate 22 is reset under the elastic force of the reset torsion spring 54, and the liquid outlet pipe 3b is closed. Then the pushing rod 12 pushes the solid waste residue into the second dissolution part 3a2, and 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 residue and solvent enter the first dissolution part 3a2. The dissolution section 3a1 is used for a new dissolution and extraction process. Then, while the stirring rod 11 stirs the first dissolution section 3a1, the push rod 12 transports the solid waste to the third dissolution section 3a3. When the push 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 push rod 12 passes through the gap between the guide rods 13, thereby completing the entire process of loading, stirring and dissolving the solid waste and the solvent, and separating and transferring the solid waste from the solvent. The push rod 12 and the adjusting rod 20 are used to link the entire process in sequence and cooperate with each other so that each process is carried out in an orderly and automatic manner, which not only improves the extraction efficiency of iron in the solid waste, but also improves the work efficiency of the entire process.

[0058] By setting a pushing piece, when the conveyor belt 10 drives the stirring rod 11 to rotate, the pushing piece is also driven to rotate. Therefore, after the solid waste and the solvent are added to the first dissolving part 3a1, the conveyor belt 10 first drives multiple groups of stirring rods 11 to slowly pass through the first dissolving part 3a1 in turn to stir the waste and the solvent. During this process, the pushing rod 12 rotates accordingly. Then, after the solid waste is dissolved and extracted for a certain period of time, the pushing rod 12 enters the first dissolving part 3a1 with the conveyor belt 10. Since the spacing between two adjacent pushing rods 12 is smaller than the width of the solid waste, the multiple evenly arranged pushing rods 12 can push the solid waste in the first dissolving part 3a1 to move, and then the solid waste moves to the second dissolving part 3a2 with the pushing rod 12. In this process, the solvent will flow back to the first dissolving part 3a1 from the gap between the pushing rods 12, and then the solid waste moves to the third dissolving part 3a3 with the pushing piece. Under the action of gravity, the solid waste will be separated from the pushing piece and fall to the multiple evenly arranged The material guide rod 13 is moved downward along the material guide rod 13 to the material guide plate 4b, and finally falls into the corresponding material receiving frame. At the same time, the distance between the two adjacent material guide rods 13 is just matched with the pushing rod 12 and the stirring rod 11, so that the pushing rod 12 and the stirring rod 11 can just pass through the material guide member. When the pushing rod 12 passes through the material guide member, the waste residue attached to the pushing rod 12 can be transferred to the material guide rod 13. Therefore, during the rotation of the pushing member with the conveyor belt 10, the solid waste residue in the first dissolving part 3a1 can be transferred to the material guide plate 4b, so that the dissolution and extraction time of the waste residue is matched with the time of one cycle of the conveyor belt 10. During the rotation process, the pushing rod 12 automatically separates and transfers the waste residue that has been dissolved and extracted from the solvent, and then new solid waste residue can be put into the feeding mechanism 2 for extraction, thereby realizing the automatic separation and transfer of solid waste residue and improving the operation efficiency of the entire solid waste residue dissolution and extraction operation.

[0059] By providing a first stirring block 14 and a second stirring block 15 (it should be noted that the first stirring block 14 and the second stirring block 15 are both relatively thin and smaller than the height of the waste residue), when the stirring member is located in the first dissolving portion 3a1, the first stirring block 14 slides to the bottom of the stirring rod 11 under the action of gravity and contacts the inner wall of the first dissolving portion 3a1. Therefore, when the stirring rod 11 drives the first stirring block 14 through the first dissolving portion 3a1, all the waste residue in the first dissolving portion 3a1 can be pushed. In this process, after the waste residue accumulates to a certain height, it will roll to the other side of the first stirring block 14. After that, when the stirring rod 11 moves upward to the arc-shaped slope surface of the first dissolving portion 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, providing the first stirring block 14 can greatly increase the stirring effect of the stirring rod 11 on the waste residue, increase the contact between the waste residue and the solution The contact between the agents improves the dissolution and extraction efficiency of iron in the solid waste; similarly, when the pusher rod 12 is located in the first dissolving part 3a1, the second stirring block 15 slides to the bottom of the pusher rod 12 under the action of gravity and contacts the inner wall of the first dissolving part 3a1. Therefore, when the pusher rod 12 passes through the first dissolving part 3a1, the waste residue attached to the inner wall of the first dissolving part 3a1 can be pushed and transferred, thereby ensuring that the pusher can completely transfer the solid waste residue in the first dissolving part 3a1, which is convenient for the 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 dissolving part 3a3, the first stirring block 14 and the second stirring block 15 will move to fit the conveyor belt 10 under the action of gravity, and 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 limit block 16, it is ensured that after the stirring rod 11 or the pushing rod 12 passes the highest point of the third stirring section, the first stirring block 14 or the second stirring block 15 will be stuck between the first limit block 16 and the conveyor belt 10, thereby ensuring that the first stirring block 14 and the second stirring block 15 are attached to the conveyor belt 10 when passing through the guide member, avoiding the first stirring block 14 and the second stirring block 15 from colliding with the guide rod 13 and affecting the operation of the equipment; at the same time, the first limit block 16 is used to limit the first stirring block 14 and the second stirring block 15 in the process of passing through the guide member, so that the first stirring block 14 and the second stirring block 15 are attached to the conveyor belt 10, which can avoid the waste residue falling and getting stuck in the gap between the guide rod 13 and the conveyor belt 10 under the action of gravity when the pushing 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 pushing rod 12 is attached to the conveyor belt 10, which can block the gap between the guide rod 13 and the conveyor belt 10).

[0061] By setting the third rotating wheel 17, the adjusting rod 20, etc., the first rotating rod 5 can drive the synchronous belt 19 located on both sides of the tank body 3a to rotate synchronously through the third rotating wheel 17. At the same time, the adjusting rod 20 is parallel to the push rod 12 and the direction of the adjusting rod 20 and the push rod 12 is the same, so that the adjusting rod 20 and the push rod 12 can move synchronously. The position of the push rod 12 inside the tank body 3a can be indicated by the position of the adjusting rod 20 outside the tank body 3a. Therefore, when the adjusting rod 20 rotates to the bottom of the first dissolving part 3a1, The pusher also rotates synchronously to the first dissolving part 3a1, and then the pusher pushes the solid waste in the first dissolving part 3a1. At the same time, 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 is located on the upper side of the pusher, and the rotation direction of the pusher is upward, so opening the liquid outlet pipe 3b later will not cause the solid waste to be discharged from the liquid 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 rod 24 to move along the second moving groove 25. The plate 22 moves in a direction away from the liquid outlet pipe 3b, so that the first control plate 22 is separated from the nozzle of the liquid outlet pipe 3b, the liquid outlet pipe 3b is opened, and the solvent is discharged from the liquid outlet pipe 3b. Then, the first control rod 24 abuts against the top of the second movable groove 25, and 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 drives the first control plate 22 to slide downward under the action of gravity until the second magnetic block 26 abuts against the bottom end of the second movable groove 25. At this time, the first control plate 22 is located at the upper end of the liquid outlet pipe 3b. On the other hand, the liquid outlet pipe 3b is closed. Therefore, in the process of the pushing piece rotating to transfer the solid waste, the first control plate 22 is driven to move by the synchronously rotating adjusting rod 20 arranged on the outside of the tank body 3a, so as to realize the discharge of the solvent in the first dissolving part 3a1, so as to automatically separate the solid waste from the solvent after the solid waste extraction is completed, and automatically discharge the solid waste and the solvent separately. There is no need for workers to use devices such as filters to separate the waste and the solvent before transferring them separately, thereby improving the work efficiency of the entire solid waste dissolution, extraction and transfer.

[0062] By setting a second control rod 27, a second magnetic block 26, etc., during the rotation of the pusher and the adjusting rod 20, after the pusher pushes the extracted waste slag out of the first dissolution part 3a1, the adjusting rod 20 drives the first loading port 2a to open, so that new solid waste slag enters the first dissolution part 3a1, and then the solvent is introduced to continue the dissolution and extraction of the solid waste slag, so that the transfer of solid waste slag and the addition of new solid waste slag are coordinated and linked to each other, and the new solid waste slag is automatically added after the solid waste slag is transferred, which greatly improves the work efficiency; by setting a magnetic screening roller 33, a screening frame 30, etc., the magnetic screening roller 33 screens the magnetic waste slag and non-magnetic waste slag in the solid waste slag, and transfers it through the feed plate 29, thereby ensuring that the magnetic waste slag entering the first dissolution part 3a1 is iron-containing magnetic waste slag, thereby improving the extraction efficiency of iron in the solid waste slag.

[0063] By setting the third control rod 36b, the fourth control rod 37a, etc., the fifth control rod 44 automatically pushes the fourth control plate 37b and the third control plate 36a to move during the slow rotation of the magnetic screening roller 33, thereby realizing the automatic opening and closing of the upper hopper 34 and the second discharge port 35, and then realizing the automatic loading of solid waste residue and the automatic unloading of the screened waste residue. At the same time, in conjunction with the rotation rate of the first rotating rod 5, the amount of solid waste residue on the feed plate 29 entering the tank body 3a each time is regulated, so that the various components of the entire device cooperate with each other, thereby improving the degree of automation of the device.

[0064] By setting the connecting rod 50, the fifth control plate 46, etc., after the adjusting rod 20 realizes the automatic discharge of the solvent, it drives the first control plate 22 and the fifth control plate 46 to move upward, thereby realizing the automatic loading of new solvent and solid waste slag. On the one hand, there is no need for workers to perform manual operation, which improves convenience. At the same time, the loading process is coordinated with the unloading process, so that the entire process is carried out automatically and orderly, thereby improving the extraction efficiency of iron in solid waste slag.

[0065] By setting the third limit spring 52, etc., on the one hand, the fifth control plate 46 and the second control plate 2b can be reset under the action of the elastic force of the third limit spring 52, and at the same time, the elastic force of the third limit spring 52 makes the bottom of the fifth limit plate contact the tank body 3a, and the bottom of the second control plate 2b contact the bottom end of the first loading port 2a, ensuring that the liquid inlet pipe 45 and the first loading port 2a are in a closed state.

[0066] By setting a reset torsion spring 54, after the first magnetic block 21 is separated from the second magnetic block 26, the first control rod 24 is pushed to move along the square close to the liquid outlet pipe 3b under the action of the elastic force of the reset torsion spring 54 until the first control rod 24 abuts against one end of the second movable groove 25, thereby ensuring that the first control plate 22 can be reset after the adjustment rod 20 pushes the first control plate 22 to move so that the liquid outlet pipe 3b is opened, thereby avoiding affecting the subsequent dissolution and extraction process of the solid waste.

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

[0068] The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A waste residue dissolution and extraction device for a sulfuric acid production system, characterized by: The invention comprises a machine body (1), a feeding mechanism (2) arranged on the machine body (1), a stirring and dissolving mechanism (3) arranged on the machine body (1), and a discharging mechanism (4) arranged on the machine body (1), wherein the stirring and dissolving mechanism (3) comprises a tank body (3a) vertically arranged on the machine body (1) and having a semicircular elliptical longitudinal section, and a liquid outlet pipe (3b) connected to the bottom end of the tank body (3a), wherein the tank body (3a) comprises, from bottom to top, a first dissolving portion (3a1) having a semicircular longitudinal section, a second dissolving portion (3a2) having a rectangular longitudinal section, and a third dissolving portion (3a3) having a semicircular longitudinal section, wherein a first rotating rod (5) and a second rotating rod (6) are arranged on the tank body (3a) to rotate in a horizontal direction, wherein the first rotating rod (5) is located between the second rotating rod ( 6), both ends of the first rotating rod (5) and the second rotating rod (6) are movable through the tank body (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), 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 in the tank body (3a), a conveyor belt (10) is provided between the first rotating wheel (8) and the second rotating wheel (9), the outer side of the conveyor belt (10) is evenly provided with a plurality of stirring members, the stirring members include a plurality of evenly provided stirring rods (11), one end of the stirring rod (11) can be movably fitted to the inner wall of the tank body (3a).

2. The waste residue dissolving and extracting device for a sulfuric acid production system according to claim 1, characterized in that: The conveyor belt (10) is provided with a pushing piece for transferring a waste residue, and the pushing piece includes a plurality of evenly arranged pushing rods (12), and the distance between two adjacent pushing rods (12) is smaller than the distance between two adjacent stirring rods (11). The discharging mechanism (4) includes a first discharge port (4a) opened at the top of the second dissolving part (3a2) and a guide plate (4b) arranged obliquely downward on the first discharge port (4a). The guide plate (4b) is provided with a guide piece at one end close to the tank body (3a), and the guide piece is located in the tank body (3a). The guide piece includes a plurality of evenly arranged guiding rods (13), and the central axis of the guiding rod (13) is located in the same horizontal plane as the guiding plate (4b). Both the pushing rod (12) and the stirring rod (11) can move through between two adjacent guiding rods (13).

3. The waste residue dissolving and extracting device for a sulfuric acid production system according to claim 2, characterized in that: A first stirring block (14) is movably provided on the stirring member, and the stirring rods (11) located on the same horizontal plane are all movable through the adjacent first stirring blocks (14). A second stirring block (15) is movably provided on the pushing member, and the pushing rods (12) are all movable through the second stirring block (15). The first stirring block (14) and the second stirring block (15) can be movably fitted to the inner wall of the tank body (3a) on the side away from the conveyor belt (10). There is a set distance between the end of the guide rod (13) and the conveyor belt (10), and the first stirring block (14) and the second stirring block (15) can pass between the guide rod (13) and the conveyor belt (10).

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

5. The waste residue dissolving and extracting device for a sulfuric acid production system according to claim 2, characterized in that: The first rotating rod (5) is symmetrically provided with a third rotating wheel (17) at both ends, and the second rotating rod (6) is symmetrically provided with a fourth rotating wheel (18), the third rotating wheel (17) and the fourth rotating wheel (18) are both located outside the tank body (3a), a synchronous belt (19) is provided between the third rotating wheel (17) and the adjacent fourth rotating wheel (18), an adjusting rod (20) is provided on the synchronous belt (19), the central axis of the adjusting rod (20) and the central axis of the pushing rod (12) are in the same horizontal plane, the end of the adjusting rod (20) is provided with a first magnetic block (21), the first dissolving part (3a1) A first arc-shaped control plate (22) for controlling the opening and closing of the liquid outlet tube (3b) is slidingly provided at the bottom thereof; a first movable groove (23) cooperating with the first control plate (22) is provided on the first dissolving portion (3a1); first control rods (24) are symmetrically provided on both sides of the first control plate (22); second movable grooves (25) cooperating with the first control rod (24) are symmetrically provided on both sides of the first dissolving portion (3a1); a second magnetic block (26) is provided at the end of the first control rod (24); and the first magnetic block (21) is movably attached to the adjacent second magnetic block (26) on the side close to the tank body (3a).

6. The waste residue dissolving and extracting device for a sulfuric acid production system according to claim 5, characterized in that: The feeding mechanism (2) comprises a first feeding port (2a) opened at the bottom of the second dissolving part (3a2) and a second control plate (2b) slidably arranged on the second dissolving part (3a2) in a vertical direction, the first feeding port (2a) is located on the side of the second dissolving part (3a2) away from the first discharge port (4a), the bottom end of the second control plate (2b) can be 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) can be movably attached to the adjacent third magnetic block (28), the bottom end of the first feeding port (2a) is provided with a feed plate (29) obliquely upward, and a screening frame (30) is provided on the machine body (1), and the screening frame (30) is provided with a filter along the water flow path. A screening rod (31) is provided for horizontal rotation, a second motor (32) is provided on the machine body (1) for driving the screening rod (31) to rotate, a magnetic screening roller (33) is provided on the screening rod (31), the top end of the feed plate (29) is in contact with the outer wall of the magnetic screening roller (33), a set distance is provided between the side of the magnetic screening roller (33) away from the feed plate (29) and the inner wall of the screening frame (30), the top of the side of the screening frame (30) away from the feed plate (29) is connected to the upper hopper (34), a second discharge port (35) is provided at the bottom of the screening frame (30), a first control member (36) for controlling the opening and closing of the second discharge port (35) is provided at the bottom of the screening frame (30), and a second control member (37) for controlling the opening and closing of the upper hopper (34) is provided at the top of the screening frame (30).

7. The waste residue dissolving and extracting device for a sulfuric acid production system according to claim 6, characterized in that: The first control member (36) includes a third control plate (36a) slidably arranged on the second discharge port (35) in the horizontal direction and a third control rod (36b) symmetrically arranged at both ends of the third control plate (36a), a first limit rod (38) is arranged horizontally on one side of the third control plate (36a), a first limit plate (39) is vertically arranged on the machine body (1), a first limit spring (40) is horizontally arranged between the first limit plate (39) and the third control plate (36a), the first limit rod (38) moves through the first limit spring (40) and the first limit plate (39), the second control member (37) includes a fourth control plate (37b) slidably arranged on the bottom end of the upper hopper (34) in the horizontal direction and a fourth control rod (37a) horizontally arranged on the fourth control plate (37b), the screening frame ( 30) is vertically provided with a second limit plate (41), and a second limit rod (42) is horizontally provided on the side of the fourth control plate (37b) away from the loading hopper (34). A second limit spring (43) is provided between the second limit plate (41) and the fourth control plate (37b). The second limit rod (42) moves through the second limit spring (43) and the second limit plate (41). Both ends of the screening rod (31) move through the screening frame (30). One end of the screening rod (31) is provided with a fifth control rod (44) 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 in a direction away from the second discharge port (35), and the fifth control rod (44) can push the fourth control rod (37a) to move in a direction away from the second loading port.

8. The waste residue dissolving and extracting device for a sulfuric acid production system according to claim 6, characterized in that: A liquid inlet pipe (45) is provided on the side of the second dissolving portion (3a2) away from the first feeding port (2a) in a horizontal direction, and the liquid inlet pipe (45) is located below the first discharging port (4a). A fifth control plate (46) for controlling the opening and closing of the liquid inlet pipe (45) is provided on the second dissolving portion (3a2) in a vertically slidable manner. A third discharging port (47) that can cooperate with the liquid inlet pipe (45) is provided on the fifth control plate (46). Sixth control rods (48) are symmetrically provided at both ends of the fifth control plate (46). A third movable groove (49) is symmetrically provided on both sides of the second dissolving portion (3a2) in the vertical direction and cooperates with the adjacent sixth control rod (48). When the sixth control rod (48) contacts the bottom end of the third movable groove (49), the third discharge port (47) is located below the liquid inlet pipe (45). A connecting rod (50) is provided between the sixth control rod (48) and the second control rod (27) in the horizontal direction. The connecting rod (50) is located between the outer wall of the tank body (3a) and the adjacent fourth rotating wheel (18).

9. The waste residue dissolving and extracting device for a sulfuric acid production system according to claim 8, characterized in that: A third limit plate (51) is horizontally arranged on the tank body (3a), and the third limit plate (51) is located above the connecting rod (50). A third limit spring (52) is vertically arranged between one end of the connecting rod (50) close to the sixth control rod (48) and the third limit plate (51). A third limit rod (53) is vertically arranged at the bottom of the third limit plate (51), and the third limit rod (53) moves through the third limit spring (52) and the connecting rod (50). When the third limit spring (52) is at its original length, the sixth control rod (48) contacts the bottom end of the third movable groove (49), and the second control plate (2b) contacts the bottom end of the first loading port (2a).

10. The waste residue dissolution and extraction device for a sulfuric acid production system according to claim 5, characterized in that: Both ends of the second rotating rod (6) are movably provided with a return torsion spring (54), and the return torsion spring (54) is located between the outer wall of the tank body (3a) and the adjacent fourth rotating wheel (18). One end of the return torsion spring (54) is fixedly connected to the adjacent first control rod (24), and the other end of the return torsion spring (54) is fixedly connected to the outer wall of the tank body (3a).

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