Metal waste residue dissolving system for heavy metal waste residue treatment

Abstract

The invention relates to the technical field of solid waste residue treatment, and discloses a metal waste residue dissolving system for heavy metal waste residue treatment, which comprises a tank body, a feed pipe arranged at the top end of the tank body in a communicating manner, a liquid inlet pipe arranged at the top end of the tank body in a communicating manner, and a liquid outlet pipe arranged at the bottom of the tank body in a communicating manner, a rotating shaft is rotatably arranged on the tank body in the vertical direction, a plurality of groups of first stirring rods are symmetrically arranged on the rotating shaft, a filter screen is movably arranged in the tank body in the horizontal direction, the rotating shaft movably penetrates through the filter screen, and a material loading block is horizontally arranged on the rotating shaft; a driving part for driving the rotating shaft to rotate is arranged at the top of the tank body; the method has the effect of improving the treatment efficiency of the heavy metal waste residues.

Description

Technical Field

[0001] The present invention relates to the technical field of solid waste residue treatment, in particular to a metal waste residue dissolving system for treating heavy metal waste residue. Background Art

[0002] The hydrometallurgical smelting process of nonferrous metals (such as the leaching, purification, and electrolysis of copper, zinc, nickel, and cobalt) produces large quantities of smelting waste residues with high heavy metal content. These waste residues are classified as hazardous wastes in the "National List of Hazardous Wastes (2008 Edition)." The primary environmental risk of hydrometallurgical waste residues comes from the soluble heavy metal ions on the waste residue surface. Compared to other heavy metal waste residues, hydrometallurgical waste residues have a higher concentration of exchangeable heavy metal ions and can be separated through washing.

[0003] The invention patent with publication number CN104726719B discloses a method for washing and recovering heavy metal waste residue. First, a certain amount of pulping agent is added to the heavy metal waste residue and the waste residue is rapidly stirred to be pulped; the pulped waste residue is pumped into a filter press with a washing function and rinsed with deionized water to obtain a washing liquid containing valuable metals; the washing liquid is sent to an ion exchange adsorption column for adsorption treatment, and the heavy metal ions in the washing liquid are enriched with an ion exchange resin to obtain an acidic desorption liquid enriched with high concentrations of heavy metal ions; although this method improves the release rate of dissolved heavy metals and reduces the volume of washing water, it is necessary to first stir and pulp the heavy metal waste residue in a tank body, then transfer it to a filter press for washing and filtration, and finally perform adsorption treatment. The entire process is relatively cumbersome. In the process of transferring the pulped waste residue, the heavy metal slurry liquid will also remain in the equipment pipeline, requiring subsequent treatment, resulting in a low overall treatment efficiency of the heavy metal waste residue. Summary of the Invention

[0004] The purpose of the present invention is to provide a metal waste slag dissolution system for heavy metal waste slag treatment, which has the effect of improving the treatment efficiency of heavy metal waste slag.

[0005] The above technical purpose of the present invention is achieved through the following technical scheme: it includes a tank body, a feed pipe connected to the top of the tank body, a liquid inlet pipe connected to the top of the tank body, and a liquid outlet pipe connected to the bottom of the tank body, a rotating shaft is arranged on the tank body for rotation in a vertical direction, and several groups of first stirring rods are symmetrically arranged on the rotating shaft, a filter screen is movably arranged in the tank body in a horizontal direction, the rotating shaft moves through the filter screen, a loading block is horizontally arranged on the rotating shaft, the bottom of the filter screen can be movably fitted to the top of the loading block, a discharge pipe is connected to the tank body, and a driving member for driving the rotating shaft to rotate is arranged on the top of the tank body.

[0006] By adopting the above technical solution, when heavy metal waste residue needs to be processed, the heavy metal waste residue and the extracting liquid for dissolving and extracting heavy metals are first added into the tank body through the feed pipe and the liquid inlet pipe. At this time, the heavy metal waste residue is located on the filter screen and immersed in the extracting liquid. Then, the driving member is turned on to drive the rotating shaft and the first stirring rod to rotate, and the heavy metal waste residue and the extracting liquid are stirred so that the heavy metal waste residue and the extracting liquid can be fully contacted and the heavy metal can be dissolved in the extracting liquid. After the extraction is completed, the valve of the liquid outlet pipe is opened to discharge the extracting liquid, and then the valve of the liquid outlet pipe is closed and the inlet is opened. The material pipe is connected to the washing water to wash the heavy metal waste residue, and then the valve of the liquid outlet pipe is opened to discharge the washing water, and finally the material outlet pipe is opened to discharge the waste residue on the filter screen; by setting the filter screen, the rotating shaft, etc., the extraction liquid and the washing liquid can be added to the tank body in sequence to dissolve and extract and wash the heavy metal waste residue respectively, and there is no need to transfer and filter the heavy metal waste residue, thereby improving the treatment efficiency of the heavy metal waste residue. At the same time, the heavy metal waste residue is stirred by the rotating shaft and the first stirring rod to ensure that the heavy metal waste residue is fully in contact with the extraction liquid, thereby further improving the treatment efficiency of the heavy metal waste residue.

[0007] The present invention is further configured as follows: the driving member includes a rotating cylinder rotatably arranged on the top of the tank body and a first rotating wheel arranged on the rotating cylinder, a driving motor is provided on the top of the tank body, a second rotating wheel is provided at the output end of the driving motor, a synchronous belt is provided between the first rotating wheel and the second rotating wheel, and long strip-shaped synchronous blocks are symmetrically provided on the rotating shaft in the vertical direction, the rotating shaft moves through the top of the tank body, the rotating shaft and the synchronous block both move through the rotating cylinder, a fixed bracket is provided on the top of the tank body, a driving cylinder is provided on the fixed bracket in a vertical downward direction, and the output end of the driving cylinder is rotatably connected to the top end of the rotating shaft.

[0008] By adopting the above technical solution, a rotating drum, a synchronous block, etc. are set. When it is necessary to drive the rotating shaft to rotate, the driving motor is turned on, and the rotating drum is driven to rotate through the second rotating wheel, the synchronous belt, etc., and then the rotating shaft is driven to rotate through the synchronous block. During the rotation of the rotating shaft, the first stirring rod stirs the tank body; after the extraction of heavy metal waste slag is completed, the driving cylinder is turned on to drive the rotating shaft and the loading block to rise. During the rising process of the loading block, the filter screen and the heavy metal waste slag are pushed up until the heavy metal waste slag is separated from the extract. After that, the valve of the liquid outlet pipe can be opened to discharge the extract. Therefore, by setting the rotating drum, the synchronous block, etc., the rotation of the rotating shaft can be realized, and the rotating shaft and the loading block are pushed by the driving cylinder to realize the lifting and lowering of the filter screen, which can further accelerate the separation of heavy metal waste slag and the extract, and also facilitate the subsequent washing liquid to directly wash the heavy metal waste slag located in the middle of the tank body.

[0009] The further setting of the present application is that the tank body comprises a cylindrical first dissolving part and a hemispherical second dissolving part arranged at the bottom end of the first dissolving part, the filter screen is movably attached to the inner wall of the first dissolving part and the second dissolving part, the discharge pipe is located at the second dissolving part, the inner wall of the second dissolving part is provided with a moving groove with an arc-shaped cross section, the moving groove is slidably provided with a control plate for controlling the opening and closing of the discharge pipe, the rotating shaft is movably provided with a spherical first connecting block, the filter screen is provided with a second connecting block matched with the first connecting block, the inner wall of the second connecting block is movably attached to the outer wall of the first connecting block, the top of the carrier block is provided with a first connecting groove matched with the first connecting block, the second connecting block can drive the filter screen to rotate around the first connecting block, and the filter screen can push the control plate to slide up and down.

[0010] The further setting of the present application is that the bottom of one end of the filter screen close to the discharge pipe is provided with a first magnetic block, the top of the control plate is provided with a second magnetic block matched with the first magnetic block, the inner wall of the tank body is provided with a third magnetic block matched with the second magnetic block, the top end of the second magnetic block can be attached to the bottom end of the third magnetic block, the inner wall of the bottom of the first dissolving part is provided with a first limiting groove in the vertical direction, one end of the filter screen is provided with a first limiting block clamped in the first limiting groove, the first limiting block is located at the end of the filter screen away from the first magnetic block, when the filter screen is in a horizontal state, the first limiting block abuts against the bottom end of the first limiting groove, and when the filter screen is rotated downward to the state that the discharge pipe is opened, the end of the first limiting block is located in the first limiting groove.

[0011] When the filter screen is in a state of being moved downwardly, the filter screen is moved downwardly and the filter screen is moved downwardly to the position where the filter screen is moved downwardly. The slag is discharged from the discharge pipe along the filter screen under the action of gravity, and then the driving cylinder is opened to drive the loading block to rise. During the rising process of the loading block, the filter screen is pushed to rotate upward around the first connecting block at one end near the first magnetic block. During the rising process of the first magnetic block, the second magnetic block and the control plate are driven to slide upward until the filter screen returns to a horizontal state, at which time the discharge pipe is in a closed state; by setting the first connecting block, the second connecting block, etc., the loading block can be driven down by the driving cylinder. During the descending process of the loading block, the rotatable direction of the filter screen is limited by the cooperation of the first limit block and the first limit groove, so that the filter screen and the second connecting block push the control plate to slide during the downward rotation of the first connecting block, so that the discharge pipe is opened. At the same time, the filter screen is in an inclined state after rotation, which is convenient for the heavy metal waste slag to slide from the filter screen into the discharge pipe for discharge. Therefore, the automatic discharge of heavy metal waste slag on the filter screen can be realized, further improving the treatment efficiency of heavy metal waste slag.

[0012] The present invention is further configured as follows: a circular third connecting block is rotatably provided on the top of the second connecting block, and a long strip of pushing blocks is symmetrically provided on the third connecting block. There is a set distance between the end of the pushing block away from the rotating shaft and the inner wall of the tank body, and the bottoms of the third connecting block and the pushing block are movably fitted to the filter screen, and a rotating part for driving the pushing block to rotate is provided in the tank body.

[0013] The present invention is further configured as follows: the rotating member includes a rotating rod symmetrically arranged in the vertical direction in the tank body and a rotating plate horizontally arranged at the bottom end of the rotating cylinder, the rotating shaft and the synchronous block both movably pass through the rotating plate, the top of the rotating rod movably passes through the rotating plate, a set distance is provided between the top of the rotating rod and the top of the tank body, a set distance is set between the rotating rod and the rotating shaft, the first stirring rod is located between the rotating shaft and the rotating rod, the top of the pushing block is provided with a connecting rod in a direction perpendicular to the pushing block, the top of the connecting rod is provided with a spherical fourth connecting block, the bottom of the rotating rod is provided with a fifth connecting block cooperating with the adjacent fourth connecting block, the inner wall of the fifth connecting block movably fits into the outer wall of the fourth connecting block, and there is a set distance between the bottom end of the fifth connecting block and the bottom end of the fourth connecting block.

[0014] By adopting the above technical solution, a pushing block, a rotating rod, etc. are set, and when the heavy metal waste slag is extracted, the rotating cylinder drives the rotating plate to rotate, and the rotation of the rotating plate drives the two rotating rods to rotate around the rotating axis, and the rotating rod drives the pushing block and the third connecting block to rotate around the second connecting block through the fifth connecting block and the fourth connecting block. Therefore, the pushing block can stir the heavy metal waste slag on the filter screen, further accelerating the contact between the heavy metal waste slag and the extracting liquid. When the washing liquid washes the heavy metal waste slag, the rotation of the pushing block can also accelerate the elution of the extracting liquid remaining on the surface of the waste slag; at the same time, when the loading plate is driven to descend and the filter screen rotates, the second connecting block drives the third connecting block, the pushing block and the connecting rod to rotate accordingly. In this process, the fourth connecting block rotates around the inner wall of the fifth connecting block, and the rotating rod still remains in a vertical state. During the process of discharging the waste slag from the discharge pipe, the rotating rod still drives the pushing rod to rotate along the surface of the filter screen through the fifth connecting block, pushing the heavy metal waste slag to move on the filter screen, thereby improving the discharge efficiency of the heavy metal waste slag and avoiding the heavy metal waste slag being adsorbed on the filter screen and unable to be discharged automatically; therefore, by setting the pushing block, rotating rod, etc., the pushing block is attached to the filter screen, and the rotating rod drives the pushing block to rotate, so as to fully stir the heavy metal waste slag on the filter screen. At the same time, in the process of the filter screen rotating around the first connecting block, the pushing block and the third connecting block rotate synchronously therewith, and in the process of the pushing block rotating, the fourth connecting block rotates around the fifth connecting block. Then, in the process of discharging the heavy metal waste slag, the pushing plate can still rotate around the surface of the filter screen to ensure that the heavy metal waste slag can be fully discharged, avoiding affecting the next heavy metal waste slag treatment process.

[0015] The present invention is further configured as follows: a second limit block is provided on the rotating rod, a return spring is provided between the bottom of the rotating plate and the second limit block, the rotating rod moves through the return spring, and when the filter screen and the push block are in a horizontal direction, the return spring is at its original length.

[0016] By adopting the above technical solution and providing a return spring, the connection between the rotating rod and the rotating plate can be strengthened to prevent the rotating rod and the rotating plate from being separated.

[0017] The present invention is further configured as follows: a plurality of groups of second stirring rods are provided on a side of the rotating rod away from the first stirring rod, and a set distance is provided between the second stirring rods and the inner wall of the tank body.

[0018] By adopting the above technical solution, a second stirring rod is set. During the rotation of the rotating rod, the second stirring rod can also stir the tank body, thereby further enhancing the stirring efficiency when extracting heavy metal waste residue and improving the treatment efficiency of heavy metal waste residue.

[0019] The present invention is further configured as follows: an elastic plug is provided in the liquid outlet pipe, and the bottom end of the rotating shaft is rotatably connected to the elastic plug.

[0020] By adopting the above technical solution, an elastic plug is set. After the extraction of heavy metal waste slag is completed, the driving cylinder drives the elastic plug to rise during the process of driving the rotating shaft to rise, so that when the loading block drives the filter screen and heavy metal waste slag to rise, the elastic plug is separated from the liquid outlet pipe, and the extracted liquid is automatically discharged from the liquid outlet pipe, thereby realizing the automatic opening and closing of the liquid outlet pipe by the lifting and lowering of the rotating shaft, and realizing the automatic discharge of the extracted liquid.

[0021] The present invention is further configured as follows: a spiral stirring blade is provided at the bottom of the rotating shaft, the stirring blade is located in the second dissolving portion, and a set distance is provided between the bottom end of the stirring blade and the bottom end of the second dissolving portion.

[0022] By adopting the above technical solution, a spiral stirring blade is provided, and during the rotation of the rotating shaft, the stirring blade is driven to rotate. During the rotation of the stirring blade, the extracting liquid located in the second dissolving part can be driven to form an upward-moving vortex, thereby pushing the extracting liquid to contact the heavy metal waste residue on the filter screen from below, thereby improving the extraction efficiency of the heavy metal waste residue.

[0023] The beneficial effects of the present invention are:

[0024] 1. By setting a filter screen, a rotating shaft, etc., the extraction liquid and the washing liquid can be added to the tank body in sequence to dissolve and extract the heavy metal waste residue and wash it respectively. There is no need to transfer and filter the heavy metal waste residue, thereby improving the treatment efficiency of the heavy metal waste residue. At the same time, the heavy metal waste residue is stirred by the rotating shaft and the first stirring rod to ensure that the heavy metal waste residue is fully in contact with the extraction liquid, thereby further improving the treatment efficiency of the heavy metal waste residue.

[0025] 2. By setting a first connecting block, a second connecting block, etc., the loading block can be driven to descend by driving the cylinder. During the descending process of the loading block, the rotatable direction of the filter screen is limited by the cooperation of the first limit block and the first limit groove, so that the filter screen and the second connecting block push the control panel to slide during the downward rotation around the first connecting block, so that the discharge pipe is opened. At the same time, the filter screen is in an inclined state after rotation, which facilitates the heavy metal waste slag to slide from the filter screen into the discharge pipe for discharge. Therefore, the automatic discharge of heavy metal waste slag on the filter screen can be realized, further improving the treatment efficiency of heavy metal waste slag.

[0026] 3. By setting a pusher block, a rotating rod, etc., the pusher block is attached to the filter screen, and the rotating rod drives the pusher block to rotate during the process, so that the heavy metal waste slag on the filter screen can be fully stirred. At the same time, when the filter screen rotates around the first connecting block, the pusher block and the third connecting block rotate synchronously. During the rotation of the pusher block, the fourth connecting block rotates around the fifth connecting block. Then, during the discharge of the heavy metal waste slag, the pusher plate can still rotate around the surface of the filter screen to ensure that the heavy metal waste slag can be fully discharged, so as to avoid affecting the next heavy metal waste slag treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 This is a structural schematic diagram of an embodiment of a metal waste slag dissolution system for treating heavy metal waste slag according to the present invention;

[0029] Figure 2 It is a partial cross-sectional structural diagram of an embodiment of a metal waste slag dissolution system for treating heavy metal waste slag according to the present invention;

[0030] Figure 3 yes Figure 2 A is an enlarged schematic diagram;

[0031] Figure 4 yes Figure 2 A magnified schematic diagram of middle B;

[0032] Figure 5 yes Figure 2 A magnified schematic diagram of middle C;

[0033] Figure 6 yes Figure 2 A magnified schematic diagram of D in the middle;

[0034] Figure 7 yes Figure 2Enlarged schematic diagram of E.

[0035] In the figure, 1, tank body; 1a, first dissolving part; 1b, second dissolving part; 2, feeding pipe; 3, liquid inlet pipe; 4, liquid outlet pipe; 5, rotating shaft; 6, first stirring rod; 7, filter screen; 8, loading block; 9, outlet pipe; 10, driving member; 10a, rotating drum; 10b, first rotating wheel; 11, driving motor; 12, second rotating wheel; 13, synchronous belt; 14, synchronous block; 15, fixing bracket; 16, driving cylinder; 17, moving tank; 18, control board; 19, first connecting block ; 20. Second connecting block; 21. First connecting groove; 22. First magnetic block; 23. Second magnetic block; 24. First limiting groove; 25. First limiting block; 26. Third connecting block; 27. Pushing block; 28. Rotating member; 28a. Rotating rod; 28b. Rotating plate; 29. ​​Connecting rod; 30. Fourth connecting block; 31. Fifth connecting block; 32. Second limiting block; 33. Return spring; 34. Second stirring rod; 35. Elastic plug; 36. Stirring blade; 37. Third magnetic block. DETAILED DESCRIPTION

[0036] 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.

[0037] The present invention provides a metal waste slag dissolution system for heavy metal waste slag treatment, such as Figures 1 to 7 As shown, it includes a tank body 1, a feed pipe 2 connected to the top of the tank body 1, a liquid inlet pipe 3 connected to the top of the tank body 1 and a liquid outlet pipe 4 connected to the bottom of the tank body 1, a rotating shaft 5 is arranged on the tank body 1 for rotation in the vertical direction, and a plurality of groups of first stirring rods 6 are symmetrically arranged on the rotating shaft 5, a filter screen 7 is movably arranged in the horizontal direction in the tank body 1, the rotating shaft 5 moves through the filter screen 7, a loading block 8 is horizontally arranged on the rotating shaft 5, and the bottom of the filter screen 7 can be movably fitted to the top of the loading block 8, a discharge pipe 9 is connected to the tank body 1, and a driving member 10 for driving the rotating shaft 5 to rotate is provided on the top of the tank body 1.

[0038] Further, the driving member 10 comprises a rotating cylinder 10a arranged on the top of the tank body 1 and a first rotating wheel 10b arranged on the rotating cylinder 10a, the top of the tank body 1 is provided with a driving motor 11, the output end of the driving motor 11 is provided with a second rotating wheel 12, a synchronous belt 13 is arranged between the first rotating wheel 10b and the second rotating wheel 12, a long strip-shaped synchronous block 14 is symmetrically arranged on the rotating shaft 5 in the vertical direction, the rotating shaft 5 is movably arranged through the top of the tank body 1, the rotating shaft 5 and the synchronous block 14 are movably arranged through the rotating cylinder 10a, the top of the tank body 1 is provided with a fixed support 15, the fixed support 15 is provided with a driving cylinder 16 in the vertical downward direction, the output end of the driving cylinder 16 is rotatably connected with the top end of the rotating shaft 5.

[0039] Further, the tank body 1 comprises a cylindrical first dissolving part 1a and a semispherical second dissolving part 1b communicatedly arranged at the bottom end of the first dissolving part 1a, the filter screen 7 is movably attached to the inner wall of the first dissolving part 1a and the second dissolving part 1b, the discharge pipe 9 is located at the second dissolving part 1b, the inner wall of the second dissolving part 1b is provided with a moving groove 17 with arc-shaped cross section, a control plate 18 for controlling the opening and closing of the discharge pipe 9 is slidably arranged in the moving groove 17, a spherical first connecting block 19 is movably arranged on the rotating shaft 5, a second connecting block 20 matched with the first connecting block 19 is arranged on the filter screen 7, the inner wall of the second connecting block 20 is movably attached to the outer wall of the first connecting block 19, the top of the material carrying block 8 is provided with a first connecting groove 21 matched with the first connecting block 19, the second connecting block 20 can drive the filter screen 7 to rotate around the first connecting block 19, and the filter screen 7 can slide the control plate 18 up and down.

[0040] Further, the filter screen 7 is provided with a first magnetic block 22 at the bottom of one end close to the discharge pipe 9, the top of the control plate 18 is provided with a second magnetic block 23 matched with the first magnetic block 22, the inner wall of the tank body 1 is provided with a third magnetic block 37 matched with the second magnetic block 23, the top end of the second magnetic block 23 can be attached to the bottom end of the third magnetic block 37, the inner wall of the bottom of the first dissolving part 1a is provided with a first limiting groove 24 in the vertical direction, one end of the filter screen 7 is provided with a first limiting block 25 clamped in the first limiting groove 24, the first limiting block 25 is located at the end of the filter screen 7 away from the first magnetic block 22, when the filter screen 7 is in the horizontal state, the first limiting block 25 abuts against the bottom end of the first limiting groove 24, when the filter screen 7 is rotated downward to the open state of the discharge pipe 9, the end of the first limiting block 25 is located in the first limiting groove 24.

[0041] Furthermore, a circular third connecting block 26 is rotatably provided on the top of the second connecting block 20, and a long strip-shaped pushing block 27 is symmetrically provided on the third connecting block 26. There is a set distance between the end of the pushing block 27 away from the rotating shaft 5 and the inner wall of the tank body 1. The bottoms of the third connecting block 26 and the pushing block 27 are movably fitted to the filter screen 7, and a rotating part 28 for driving the pushing block 27 to rotate is provided in the tank body 1.

[0042] Furthermore, the rotating member 28 includes a rotating rod 28a symmetrically arranged in the vertical direction in the tank body 1 and a rotating plate 28b horizontally arranged at the bottom end of the rotating cylinder 10a. The rotating shaft 5 and the synchronous block 14 both move through the rotating plate 28b. The top of the rotating rod 28a moves through the rotating plate 28b. There is a set distance between the top of the rotating rod 28a and the top of the tank body 1. There is a set distance between the rotating rod 28a and the rotating shaft 5. The first stirring rod 6 is positioned at the bottom of the rotating shaft 5. Between the rotating shaft 5 and the rotating rod 28a, a connecting rod 29 is provided at the top of the pushing block 27 in a direction perpendicular to the pushing block 27, and a spherical fourth connecting block 30 is provided at the top of the connecting rod 29. The bottom of the rotating rod 28a is provided with a fifth connecting block 31 that cooperates with the adjacent fourth connecting block 30, and the inner wall of the fifth connecting block 31 is movably fitted to the outer wall of the fourth connecting block 30, and there is a set distance between the bottom end of the fifth connecting block 31 and the bottom end of the fourth connecting block 30.

[0043] Furthermore, a second limit block 32 is provided on the rotating rod 28a, and a reset spring 33 is provided between the bottom of the rotating plate 28b and the second limit block 32. The rotating rod 28a moves through the reset spring 33. When the filter screen 7 and the push block 27 are in a horizontal direction, the reset spring 33 is at its original length.

[0044] Furthermore, a plurality of groups of second stirring rods 34 are provided on a side of the rotating rod 28 a away from the first stirring rod 6 , and a set distance is provided between the second stirring rods 34 and the inner wall of the tank body 1 .

[0045] Furthermore, an elastic plug 35 is provided in the liquid outlet pipe 4 , and the bottom end of the rotating shaft 5 is rotatably connected to the elastic plug 35 .

[0046] Furthermore, a spiral stirring blade 36 is provided at the bottom of the rotating shaft 5 . The stirring blade 36 is located in the second dissolving portion 1 b , and a set distance is provided between the bottom end of the stirring blade 36 and the bottom end of the second dissolving portion 1 b .

[0047] When heavy metal waste residue needs to be processed, the heavy metal waste residue and the extracting liquid for dissolving and extracting heavy metals are first added into the tank body 1 through the feeding pipe 2 and the liquid inlet pipe 3. At this time, the filter screen 7 is in a horizontal state, and the bottom of the filter screen 7 is in contact with the loading block 8. The heavy metal waste residue is located on the filter screen 7 and immersed in the extracting liquid. Then, the driving motor 11 is turned on to drive the rotating shaft 5 and the rotating cylinder 10a to rotate. During the rotation of the rotating shaft 5, the first stirring rod 6 is driven to rotate. During the rotation of the rotating cylinder 10a, the rotating rod 28a, the pushing block 27 and the second stirring rod 34 are driven to rotate, and the heavy metal waste residue and the extracting liquid are fully stirred. At the same time, the rotating shaft 5 drives the spiral stirring blade 36 to rotate, and the stirring blade 36 drives the second dissolving part 1 The extracting liquid in b generates eddy current, so that the extracting liquid flows upward and is fully mixed with the heavy metals on the filter screen 7, so that the heavy metal waste residue and the extracting liquid can fully contact each other, thereby accelerating the dissolution and extraction process of the heavy metals in the waste residue. After the extraction is completed, the driving cylinder 16 is turned on to drive the rotating shaft 5 and the loading block 8 to rise. During the rising process of the loading block 8, the filter screen 7 and the waste residue are driven to rise. During this process, the first limiting block 25 at one end of the filter screen 7 rises along the first limiting groove 24, which is convenient for separating the waste residue from the extracting liquid. During the rising process of the rotating shaft 5, the elastic plug 35 is driven to rise and separate from the liquid outlet pipe 4, so that the extracting liquid is automatically discharged from the liquid outlet pipe 4. At the same time, during this process, although the first magnetic block 22 is separated from the second magnetic block 23, the second magnetic block 2 3 still receives the magnetic mutual attraction between the third magnetic block 37, so that the discharge pipe 9 always remains in a closed state during the extraction liquid and washing liquid discharge process (it should be noted that, although the first magnetic block, the second magnetic block and the third magnetic block are magnetic and can generate attraction to the magnetic heavy metal particles, the heavy metal waste residue is fully dissolved under the action of the extraction liquid and is in an ionic state, so it will not be affected by the magnetic substance. Therefore, the first magnetic block, the second magnetic block and the third magnetic block will not affect the normal extraction process of the magnetic heavy metal). Then, the washing liquid is introduced from the liquid inlet pipe 3 to wash the waste residue. During this process, the rotating shaft 5 keeps rotating, and the pushing block 27 pushes the waste residue to fully contact with the washing liquid introduced into the liquid inlet pipe 3. At the same time, the filter The net 7 is located in the middle of the tank body 1, and the distance between it and the liquid inlet pipe 3 is reduced, which makes it easier for the washing liquid to directly wash the waste residue. After washing is completed, the driving cylinder 16 is turned on to drive the rotating shaft 5 and the loading block 8 to descend. In this process, it first descends to the first limit block 25 at one end of the filter screen 7 and abuts against the bottom end of the first limit groove 24. Then the loading plate continues to descend, and the filter screen 7 loses its support. At the same time, under the action of the gravity of the waste residue, the end of the filter screen 7 close to the first magnetic block 22 rotates downward around the first connecting block 19 so that the bottom of the filter screen 7 can abut against one end of the loading block 8. Then the loading block 8 descends to the set height. At this time, the side of the filter screen 7 close to the first magnetic block 22 rotates downward until the discharge pipe 9 is in the open state.During the downward rotation of the filter screen 7, the fourth connecting block 30 on the pushing block 27 is driven to rotate around the fifth connecting block 31 through the second connecting block 20. Then, the rotating cylinder 10a still drives the rotating rod 28a and the pushing block 27 to rotate. However, during the rotation of the pushing block 27, the fourth connecting block 30 is always moving around the fifth connecting block 31, so that the pushing block 27 keeps rotating in the inclined direction. During the rotation of the pushing block 27, the waste residue is pushed to be discharged from the discharge pipe 9. After the waste residue is discharged, the driving cylinder 16 drives the loading block 8 to rise to a certain height, thereby pushing the filter screen 7 to rotate to a horizontal state. The filter screen 7 rotates upward. During the process, the first magnetic block 22 drives the second magnetic block 23 to rise, thereby causing the control panel 18 to rise until the discharge pipe 9 is in a closed state, facilitating the subsequent dissolution and extraction of the heavy metal waste residue. By providing the filter screen 7, the rotating shaft 5, etc., the extraction liquid and the washing liquid can be added to the tank body 1 in sequence to dissolve and extract the heavy metal waste residue and wash it respectively, eliminating the need for transfer and filtration of the heavy metal waste residue, thereby improving the treatment efficiency of the heavy metal waste residue. At the same time, the heavy metal waste residue is stirred by the rotating shaft 5 and the first stirring rod 6 to ensure that the heavy metal waste residue is fully in contact with the extraction liquid, further improving the treatment efficiency of the heavy metal waste residue.

[0048] By setting the rotating drum 10a, the synchronous block 14, etc., when it is necessary to drive the rotating shaft 5 to rotate, the driving motor 11 is turned on, and the rotating drum 10a is driven to rotate by the second rotating wheel 12, the synchronous belt 13, etc., and then the rotating shaft 5 is driven to rotate by the synchronous block 14. During the rotation of the rotating shaft 5, the first stirring rod 6 stirs the tank body 1; after the extraction of the heavy metal waste slag is completed, the driving cylinder 16 is turned on to drive the rotating shaft 5 and the loading block 8 to rise. During the rising process of the loading block 8, the filter screen 7 and the heavy metal waste slag are pushed up until the heavy metal waste slag is separated from the extract, and then the valve of the liquid outlet pipe 4 can be opened to discharge the extract. Therefore, by setting the rotating drum 10a, the synchronous block 14, etc., the rotation of the rotating shaft 5 can be realized, and the rotating shaft 5 and the loading block 8 are pushed by the driving cylinder 16 to realize the lifting of the filter screen 7, which can further accelerate the separation of the heavy metal waste slag and the extract, and also facilitate the subsequent washing liquid to directly wash the heavy metal waste slag located in the middle of the tank body 1.

[0049] By setting the first connecting block 19, the second connecting block 20, etc., after the heavy metal waste is washed, the driving cylinder 16 is turned on to drive the rotating shaft 5 and the loading block 8 to descend until the first connecting groove 21 on the loading block 8 is separated from the first connecting block 19. At this time, the first limit block 25 at one end of the filter screen 7 abuts against the bottom end of the first limit groove 24. The end of the filter screen 7 away from the first limit block 25 (that is, the end close to the first magnetic block 22) descends with the loading block 8 under the action of the gravity of the heavy metal waste, so that the second connecting block 20 drives the filter screen 7 to move downward. The filter screen 7 rotates around the first connecting block 19, and the end of the filter screen 7 close to the first magnetic block 22 pushes the second magnetic block 23 to slide downward during the downward rotation process, and then the loading block 8 continues to descend until the loading block 8 descends to a set height. At this time, the bottom of the filter screen 7 close to the first magnetic block 22 is in contact with the top of the loading block 8, and the first limiting block 25 at the other end of the filter screen 7 is still located in the first limiting groove 24. The discharge pipe 9 is in an open state, and the filter screen 7 is in a tilted state. The heavy metal waste residue on the filter screen 7 is Under the action of gravity, the material is discharged from the discharge pipe 9 along the filter screen 7, and then the driving cylinder 16 is opened to drive the loading block 8 to rise. During the rising process of the loading block 8, the end of the filter screen 7 close to the first magnetic block 22 is pushed to rotate upward around the first connecting block 19. During the rising process of the first magnetic block 22, the second magnetic block 23 and the control plate 18 are driven to slide upward until the filter screen 7 returns to a horizontal state. At this time, the discharge pipe 9 is in a closed state; by providing the first connecting block 19, the second connecting block 20, etc., the loading block 8 can be driven down by the driving cylinder 16. During the descending process of the loading block 8, the rotatable direction of the filter screen 7 is limited by the cooperation of the first limiting block 25 and the first limiting groove 24, so that the filter screen 7 and the second connecting block 20 push the control plate 18 to slide during the downward rotation of the first connecting block 19, so that the discharge pipe 9 is opened. At the same time, the filter screen 7 is in a tilted state after rotation, which is convenient for the heavy metal waste slag to slide from the filter screen 7 into the discharge pipe 9 for discharge. Therefore, the automatic discharge of the heavy metal waste slag on the filter screen 7 can be achieved, further improving the treatment efficiency of the heavy metal waste slag.

[0050] By setting the pushing block 27, the rotating rod 28a, etc., when the heavy metal waste is extracted, the rotating cylinder 10a drives the rotating plate 28b to rotate. During the rotation of the rotating plate 28b, the two rotating rods 28a are driven to rotate around the rotating shaft 5. The rotating rod 28a drives the pushing block 27 and the third connecting block 26 to rotate around the second connecting block 20 through the fifth connecting block 31 and the fourth connecting block 30. Therefore, the pushing block 27 can stir the heavy metal waste on the filter screen 7, further accelerating the contact between the heavy metal waste and the extracting liquid. When the washing liquid washes the heavy metal waste, the rotation of the pushing block 27 can also accelerate the elution of the extracting liquid remaining on the surface of the waste; at the same time, when the loading plate is driven to descend and the filter screen 7 is rotated, the second connecting block 20 drives the third connecting block 26, the pushing block 27 and the connecting rod 29 to rotate accordingly. In this process, the fourth connecting block 30 rotates around the inner wall of the fifth connecting block 31, and the rotating rod 28a still remains in a vertical state. During the discharge of the heavy metal waste slag from the discharge pipe 9, the rotating rod 28a still drives the pushing rod to rotate along the surface of the filter screen 7 through the fifth connecting block 31, pushing the heavy metal waste slag to move on the filter screen 7, thereby improving the discharge efficiency of the heavy metal waste slag and also preventing the heavy metal waste slag from being adsorbed on the filter screen 7 and unable to be discharged automatically; therefore, by setting the pushing block 27, the rotating rod 28a, etc., the pushing block 27 is attached to the filter screen 7, and the rotating rod 28a drives the pushing block 27 to rotate during the process of fully stirring the heavy metal waste slag on the filter screen 7. At the same time, during the rotation of the filter screen 7 around the first connecting block 19, the pushing block 27 and the third connecting block 26 rotate synchronously therewith, and during the rotation of the pushing block 27, the fourth connecting block 30 rotates around the fifth connecting block 31, and then during the discharge of the heavy metal waste slag, the pushing plate can still rotate around the surface of the filter screen 7 to ensure that the heavy metal waste slag can be fully discharged, thereby avoiding affecting the next heavy metal waste slag treatment process.

[0051] By providing the return spring 33 , the connection between the rotating rod 28 a and the rotating plate 28 b can be strengthened, thereby preventing the rotating rod 28 a and the rotating plate 28 b from being separated.

[0052] By providing the second stirring rod 34, during the rotation of the rotating rod 28a, the second stirring rod 34 can also stir the tank body 1, thereby further enhancing the stirring efficiency when extracting the heavy metal waste residue and improving the processing efficiency of the heavy metal waste residue.

[0053] By setting the elastic plug 35, after the extraction of heavy metal waste slag is completed, the driving cylinder 16 drives the elastic plug 35 to rise during the process of driving the rotating shaft 5 to rise, so that when the loading block 8 drives the filter screen 7 and the heavy metal waste slag to rise, the elastic plug 35 is separated from the liquid outlet pipe 4, and the extracted liquid is automatically discharged from the liquid outlet pipe 4, thereby realizing the automatic opening and closing of the liquid outlet pipe 4 by the lifting and lowering of the rotating shaft 5, and realizing the automatic discharge of the extracted liquid.

[0054] By setting the helical stirring blade 36, in the process of rotating the rotating shaft 5, the stirring blade 36 is driven to rotate, and in the process of rotating the stirring blade 36, the extraction liquid in the second dissolving part 1b is driven to form upward moving vortex, thereby pushing the extraction liquid to contact with the heavy metal waste residue on the filter screen 7 from below, and further improving the extraction efficiency of the heavy metal waste residue.

[0055] It should be noted that the embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be mutually referred to.

[0056] The above description is only a description of the preferred embodiments of the present application, and does not limit the scope of the present application in any way. Any modification or modification made by a person skilled in the art according to the above disclosure is within the protection scope of the claims.

Claims

1. A metal waste slag dissolution system for heavy metal waste slag treatment, characterized by: The invention comprises a tank body (1), a feed pipe (2) connected to the top of the tank body (1), a liquid inlet pipe (3) connected to the top of the tank body (1), and a liquid outlet pipe (4) connected to the bottom of the tank body (1); a rotating shaft (5) is arranged on the tank body (1) to rotate in a vertical direction; a plurality of first stirring rods (6) are symmetrically arranged on the rotating shaft (5); a filter screen (7) is movably arranged in the horizontal direction in the tank body (1); the rotating shaft (5) moves through the filter screen (7); a loading block (8) is horizontally arranged on the rotating shaft (5); the bottom of the filter screen (7) can be movably attached to the top of the loading block (8); a discharge pipe (9) is connected to the tank body (1); and a driving member (10) for driving the rotating shaft (5) to rotate is arranged on the top of the tank body (1).

2. The metal waste dissolution system for heavy metal waste treatment according to claim 1, characterized in that: The driving member (10) comprises a rotating cylinder (10a) rotatably arranged on the top of the tank body (1) and a first rotating wheel (10b) arranged on the rotating cylinder (10a); a driving motor (11) is arranged on the top of the tank body (1); a second rotating wheel (12) is arranged at the output end of the driving motor (11); a synchronous belt (13) is arranged between the first rotating wheel (10b) and the second rotating wheel (12); a long strip-shaped synchronous block (14) is symmetrically arranged on the rotating shaft (5) in the vertical direction; the rotating shaft (5) moves through the top of the tank body (1); the rotating shaft (5) and the synchronous block (14) both move through the rotating cylinder (10a); a fixed bracket (15) is arranged on the top of the tank body (1); a driving cylinder (16) is arranged on the fixed bracket (15) in a vertical downward direction; the output end of the driving cylinder (16) is rotatably connected to the top of the rotating shaft (5).

3. The metal waste dissolution system for heavy metal waste treatment according to claim 2, characterized in that: The tank body (1) includes a cylindrical first dissolving portion (1a) and a hemispherical second dissolving portion (1b) arranged at the bottom end of the first dissolving portion (1a), the filter screen (7) can be movably attached to the inner walls of the first dissolving portion (1a) and the second dissolving portion (1b), the discharge pipe (9) is located in the second dissolving portion (1b), and a movable groove (17) with an arc-shaped cross section is provided on the inner wall of the second dissolving portion (1b), and a control plate (18) for controlling the opening and closing of the discharge pipe (9) is slidably provided in the movable groove (17), and the rotating shaft ( 5), a spherical first connecting block (19) is movably provided on the filter screen (7), a second connecting block (20) matched with the first connecting block (19) is provided on the filter screen (7), the inner wall of the second connecting block (20) is movably fitted with the outer wall of the first connecting block (19), and a first connecting groove (21) matched with the first connecting block (19) is provided on the top of the loading block (8), the second connecting block (20) can drive the filter screen (7) to rotate around the first connecting block (19), and the filter screen (7) can push the control panel (18) to slide up and down.

4. The metal waste dissolution system for heavy metal waste treatment according to claim 3, characterized in that: A first magnetic block (22) is provided at the bottom of one end of the filter screen (7) close to the discharge pipe (9), a second magnetic block (23) is provided on the top of the control panel (18) to match the first magnetic block (22), a third magnetic block (37) is provided on the inner wall of the tank body (1) to match the second magnetic block (23), the top end of the second magnetic block (23) can be attached to the bottom end of the third magnetic block (37), and a first limiting groove ( 24), one end of the filter screen (7) is provided with a first limiting block (25) engaged with the first limiting groove (24), the first limiting block (25) is located at the end of the filter screen (7) away from the first magnetic block (22), when the filter screen (7) is in a horizontal state, the first limiting block (25) abuts against the bottom end of the first limiting groove (24), when the filter screen (7) is rotated downward until the discharge pipe (9) is in an open state, the end of the first limiting block (25) is located in the first limiting groove (24).

5. The metal waste dissolution system for heavy metal waste treatment according to claim 4, characterized in that: A circular third connecting block (26) is rotatably provided on the top of the second connecting block (20), and a long strip-shaped pushing block (27) is symmetrically provided on the third connecting block (26). There is a set distance between the end of the pushing block (27) away from the rotating shaft (5) and the inner wall of the tank body (1). The bottoms of the third connecting block (26) and the pushing block (27) are movably fitted to the filter screen (7), and a rotating part (28) for driving the pushing block (27) to rotate is provided in the tank body (1).

6. The metal waste slag dissolution system for heavy metal waste slag treatment according to claim 5, characterized in that: The rotating member (28) includes a rotating rod (28a) symmetrically arranged in the vertical direction in the tank body (1) and a rotating plate (28b) horizontally arranged at the bottom end of the rotating cylinder (10a). The rotating shaft (5) and the synchronous block (14) both move through the rotating plate (28b). The top of the rotating rod (28a) moves through the rotating plate (28b). There is a set distance between the top of the rotating rod (28a) and the top of the tank body (1). There is a set distance between the rotating rod (28a) and the rotating shaft (5). The first stirring rod (6) is located Between the rotating shaft (5) and the rotating rod (28a), a connecting rod (29) is provided at the top of the pushing block (27) in a direction perpendicular to the pushing block (27), a spherical fourth connecting block (30) is provided at the top of the connecting rod (29), and a fifth connecting block (31) is provided at the bottom of the rotating rod (28a) to match the adjacent fourth connecting block (30), the inner wall of the fifth connecting block (31) is movably fitted to the outer wall of the fourth connecting block (30), and a set distance is provided between the bottom end of the fifth connecting block (31) and the bottom end of the fourth connecting block (30).

7. The metal waste slag dissolution system for heavy metal waste slag treatment according to claim 6, characterized in that: A second limit block (32) is provided on the rotating rod (28a), and a return spring (33) is provided between the bottom of the rotating plate (28b) and the second limit block (32). The rotating rod (28a) moves through the return spring (33). When the filter screen (7) and the push block (27) are in a horizontal direction, the return spring (33) is at its original length.

8. The metal waste slag dissolution system for heavy metal waste slag treatment according to claim 6, characterized in that: A plurality of groups of second stirring rods (34) are provided on a side of the rotating rod (28a) away from the first stirring rod (6), and a set distance is provided between the second stirring rods (34) and the inner wall of the tank body (1).

9. The metal waste dissolution system for heavy metal waste treatment according to claim 1, characterized in that: An elastic plug (35) is provided in the liquid outlet pipe (4), and the bottom end of the rotating shaft (5) is rotatably connected to the elastic plug (35).

10. The metal waste slag dissolution system for heavy metal waste slag treatment according to claim 3, characterized in that: A spiral stirring blade (36) is provided at the bottom of the rotating shaft (5), and the stirring blade (36) is located in the second dissolving portion (1b). A set distance is provided between the bottom end of the stirring blade (36) and the bottom end of the second dissolving portion (1b).

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