Dredging equipment for precious metal waste treatment

Abstract

The invention discloses desilting equipment for precious metal waste treatment, and relates to the technical field of metal waste recovery, the desilting equipment comprises a tank body, the upper part of the tank body is provided with a cover body, the tank body is internally provided with a bending pipe for feeding a curing agent, the bending pipe penetrates through the cover body and is fixedly connected with the cover body, the end part of the bending pipe is provided with a material storage box, and the material storage box is provided with a material outlet; the bending pipe comprises a first vertical part, a second vertical part and a third vertical part, the first vertical part, the second vertical part and the third vertical part are located on the upper section area, the middle section area and the lower section area of the tank body respectively, and first notches with the same area are formed in the inner wall of the first vertical part, the inner wall of the second vertical part and the inner wall of the third vertical part respectively. Sludge metal substances precipitated at the bottom of the tank body can still obtain the curing agent feeding amount matched with the sludge metal substances, so that the combination of the metal substances reaches an expected index, and secondary pollution is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of metal waste recycling, in particular to a dredging device for precious metal waste treatment. Background Art

[0002] During the metal processing process, some wastes may be generated, including sludge-like wastes, such as sand and gravel washing wastewater, concrete mixing washing wastewater, vehicle washing wastewater, and cooling and washing wastewater of various construction machinery and equipment. Slag, dust collector ash, electrostatic fume device waste oil, etc. are solid wastes. These solid wastes may have a sludge-like texture.

[0003] The common way to recycle metal sludge is to add a solidifying agent such as cement, lime or fly ash to the metal sludge, mix it with the sludge, and wrap the heavy metals in the solidified body to reduce its mobility and bioavailability, so that the heavy metals in the solidified sludge are stabilized to meet the standards of various engineering construction. However, in the solidification technology of metal sludge, heavy metals are prone to precipitate at the bottom of the sludge. This is because heavy metal particles will gradually settle to the bottom of the sludge under the action of gravity. The traditional method of adding a solidifying agent is to mix the multiple solidifying agents that need to be added and directly put them into the sludge, and then stir the two. Due to the viscosity of the sludge and the reactivity of the solidifying agent itself, some of the solidifying agents lose their reactivity when they are unable to combine with the metal objects at the bottom, and then the combination of metal objects in the sludge cannot reach the expected indicators. If the precipitated heavy metals are not properly treated, they may be released back into the environment when the environment changes, causing secondary pollution.

[0004] To this end, the present invention provides a dredging device for precious metal waste treatment. Summary of the invention

[0005] The purpose of the present invention is to provide a dredging device for precious metal waste treatment to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a dredging device for precious metal waste treatment, comprising a tank body, a cover body is provided on the upper part of the tank body, a bending tube for feeding curing agent is provided inside the tank body, the bending tube passes through the cover body and is fixedly connected thereto, a storage box is provided at the end of the bending tube, the bending tube comprises a vertical part 1, a vertical part 2 and a vertical part 3, the vertical part 1, the vertical part 2 and the vertical part 3 are respectively located in the upper section, the middle section and the lower section of the tank body, the inner walls of the vertical part 1, the vertical part 2 and the vertical part 3 are all provided with a notch 1 of equal area; A conical shell is provided inside the tank body, a connecting rod is provided on the outer wall of the conical shell, the end of the connecting rod is fixedly connected to the tank body, a gear ring is provided on the outer wall of the tank body, a spur gear meshing with the gear ring is provided on one side of the gear ring, a motor is provided below the spur gear, the spur gear is fixedly connected to the rotating shaft of the motor, a base is provided at the bottom of the tank body and is rotatably connected to the base, a frame is provided on the outer wall of the cover body, and the bottom end of the frame is fixedly connected to the base; A plurality of fans are provided on one side of the bending tube, and a diffusion unit for driving the plurality of fans to rotate is provided on the outer wall of the tank body, and the diffusion unit is used to diffuse the powdered curing agent; The inner wall of the bending tube is provided with multiple slots 2, the central axis of the slots 2 faces the inner wall of the tank body, one side of the slots 2 is provided with a shielding strip for shielding it, and the outside of the tank body is provided with a water diversion unit for pushing the shielding strip to move downward, and the water diversion unit is used to flush the residual sludge on the inner wall of the tank body.

[0006] Preferably, the diverging unit includes a shell located outside the fan, and there are three shells in total, and each of the shells is connected to each other through a hollow tube body. At the same time, the three shells are aligned with the respective slots 1 of the vertical part 1, the vertical part 2 and the vertical part 3 from top to bottom. A connecting pipe is provided on the outer wall of the shell located at the bottom of the tank body, and the connecting pipe passes through the cover body and the frame body. A fan is provided at the end of the connecting pipe and is connected to the air outlet of the fan. The rotating shaft of the fan and the rotating shaft of the motor are connected to each other through a coupling. The gas entering the shell through the connecting pipe drives the fan to rotate, and the wind generated by the rotation of the fan moves to the outside of the slot 1.

[0007] Preferably, the end of the shell is shaped like a cone that converges inward, and a connecting frame is provided at the end of the fan shaft. A partition is provided at the end of the connecting frame and is fixedly connected thereto, and the partition is rotatably connected to the bending tube.

[0008] Preferably, the water diversion unit includes a vertical rod located at the upper end of the shielding strip, a cylinder is provided at the end of the vertical rod, a bending rod is provided on the outer wall of the vertical rod, a folding plate is provided at the end of the bending rod, the bottom end portion of the folding plate is located inside the bending tube and slides relative to the bending tube, a plug body is provided on the inner wall of the folding plate, a pipe is provided on the outer wall of the planar part of the plug body, and a water tank is provided at the end of the pipe.

[0009] Preferably, when the bottom end of the shielding strip moves down to a state where it contacts the inner wall of the bottom surface of the bending tube, the shielding strip blocks the first slot, and at the same time, the flat portion of the plug body passes over the upper end portion of the pipe, allowing the water in the water tank to enter the bending tube through the pipe, and at the same time, the shielding strip loses its shielding effect on the second slot.

[0010] Preferably, a second connecting frame is provided below the cover body, a stirring rod is provided on the inner wall of the second connecting frame and is fixedly connected thereto, and the stirring rod is located on the inner wall of the conical shell and rotates relatively thereto.

[0011] Preferably, the shielding strip includes a bending portion, the length of which is smaller than the length of the slot one, and when the bottom end of the shielding strip is in contact with the inner bottom surface of the bending tube, the bending portion cannot completely shield the slot one, and in this state, the notch formed by the bending portion and the slot one is aligned with the inclined surface area of ​​the conical shell.

[0012] Preferably, a filter plate is provided on the inner wall of the tank body, and the filter plate is used to filter the water in the sludge.

[0013] The present invention has at least the following beneficial effects: 1. In the present invention, the metal sludge will fall from the outer wall of the conical shell and the inner wall of the tank, and the motor drives the tank to rotate. Under the action of centrifugal force, the mixture with a larger weight will move to the area close to the inner wall of the tank, which is within the range of the curing agent placed in the bending pipe. At the same time, the centrifugal force will also drive the sludge to rotate continuously, so that the curing area of ​​the sludge itself changes in real time. The two effects cooperate with each other to make the mixing effect of the curing agent and the metal objects in the sludge better; Since the widths of the vertical part one, the vertical part two and the vertical part three are different, as the input curing agent accumulates, the capacity inside the vertical part three will be greater than the vertical part two and the vertical part one respectively, and then the content of curing agent discharged from the slot one will also be different, which corresponds to the curing agent content required by the upper, middle and lower layers inside the tank body, ensuring the rationality of the curing agent input, so that the sludge metal objects precipitated at the bottom of the tank body can still get the curing agent input amount that is suitable for it, so that the bonding of the metal objects can reach the expected indicators and reduce secondary pollution.

[0014] 2. In the present invention, the motor shaft drives the fan to supply air, and the wind enters from the shell at the bottom through the connecting pipe and gradually climbs upward and blows the fan to rotate, thereby dispersing the powdered curing agent in the notch of different areas inside the bending tube, thereby ensuring that the curing agent can be diffused more evenly in the sludge; since the wind is transported from bottom to top in the three shells, the impact force of the wind on the inside of the three shells should be gradually reduced from bottom to top, so the fan at the bottom will obtain a larger rotation speed, so that the curing agent inside the vertical part three can obtain more diffusion effect, and by analogy, the vertical part two and the vertical part one will obtain medium and weaker diffusion effects, which will again match the curing agent content required for the upper, middle and lower layers of sludge in the tank body, thereby further ensuring the curing effect of sludge metal objects at different levels. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional view of the tank structure of the present invention; Figure 3 It is a schematic diagram of the structure of the bending tube and its accessories of the present invention; Figure 4 For the present invention Figure 3 A magnified view of the structure of the middle A area; Figure 5 It is a cross-sectional view of the structure of the diverging unit and the water diversion unit of the present invention; Figure 6 For the present invention Figure 5 A magnified view of the structure of the middle B region; Figure 7 For the present invention Figure 5 A magnified view of the structure of the middle C region; Figure 8 It is a cross-sectional view of the bent tube structure of the present invention; Fig. 9 For the present invention Figure 8 A magnified view of the structure of the middle D region; Fig.10 It is a schematic diagram of the shielding strip structure of the present invention.

[0016] In the figure: 1-tank body; 2-cover body; 3-bending pipe; 4-storage box; 5-vertical part one; 6-vertical part two; 7-vertical part three; 8-slot one; 9-conical shell; 10-connecting rod; 11-tooth ring; 12-flat gear; 13-motor; 14-frame; 15-fan; 16-divergence unit; 17-slot two; 18-shielding strip; 19-water diversion unit; 20-shell; 21-connecting pipe; 22-fan; 23-connecting frame one; 24-partition; 25-vertical rod; 26-cylinder; 27-bending rod; 28-folding plate; 29-plug body; 30-pipeline; 31-water tank; 32-connecting frame two; 33-stirring rod; 34-bending part; 35-filter plate; 36-base. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-10 The present invention provides a technical solution: a dredging device for precious metal waste treatment, comprising: Embodiment 1, The tank body 1 has a cover body 2 disposed on the upper part of the tank body 1 and rotates relatively therewith, a bending tube 3 for feeding a curing agent is disposed inside the tank body 1, and the material type of the curing material is usually powdery, the bending tube 3 passes through the cover body 2 and is fixedly connected thereto, a material storage box 4 is disposed at the end of the bending tube 3 and is connected thereto, the material storage box 4 is driven by an external device to automatically feed the curing agent into the bending tube 3, the bending tube 3 comprises a vertical portion 1 5, a vertical portion 2 6 and a vertical portion 3 7, the vertical portion 1 5, the vertical portion 2 6 and the vertical portion 3 7 are respectively located in the upper section, the middle section and the lower section of the tank body 1, the width of the vertical portion 3 7 is greater than the vertical portion 2 6, the width of the vertical portion 2 6 is greater than the vertical portion 1 5, the inner walls of the vertical portion 1 5, the vertical portion 2 6 and the vertical portion 3 7 are all provided with a notch 1 8 of equal area, and the powdery curing material can diffuse from the notch 1 8 into the tank body 1 through the bending tube 3; A conical shell 9 is provided inside the tank body 1, and a connecting frame 32 is provided below the cover body 2. The overall shape of the connecting frame 32 is C-shaped, and the two upper ends of the connecting frame 32 are fixedly connected to the bottom surface of the cover body 2. A stirring rod 33 is provided on the inner wall of the connecting frame 32 and is fixedly connected thereto. The stirring rod 33 is located on the inner wall of the conical shell 9 and rotates relatively thereto. The stirring rod 33 can stir the sludge in the tank body 1 when it rotates, thereby increasing the uniformity of the metal objects in the sludge. A connecting rod 10 is provided on the outer wall of the conical shell 9 and is fixedly connected thereto. The end of the connecting rod 10 is fixedly connected to the tank body 1, so that the rotation of the tank body 1 will drive the conical shell 9 to rotate together, so that the metal sludge falling from the top of the tank body 1 is evenly scattered in the area close to the inner wall of the tank body 1, which is convenient for subsequent feeding work; A gear ring 11 is provided on the outer wall of the tank body 1 and is fixedly connected thereto. A flat gear 12 meshing with the gear ring 11 is provided on one side of the gear ring 11. A motor 13 is provided below the flat gear 12. The flat gear 12 is fixedly connected to the rotating shaft of the motor 13. A base 36 is provided at the bottom of the tank body 1 and is rotatably connected thereto. The motor 13 is fixedly connected to the base 36 through a fixed frame. A frame 14 is provided on the outer wall of the cover body 2 and is fixedly connected thereto. The bottom end of the frame 14 is fixedly connected to the base 36. A filter plate 35 is provided on the inner wall of the tank body 1 and is fixedly connected thereto. The filter plate 35 is used to filter the water in the sludge. In the process of the motor 13 driving the tank body 1 to rotate through transmission, the sludge inside the tank body 1 will cause the lighter water to gather in the central area of ​​the tank body 1 under the action of centrifugal force, thereby making it more convenient for the water to be filtered from the central position of the filter plate 35. After reducing the water component in the sludge, it is more conducive to the combination of the curing agent and the metal substance in the sludge.

[0019] A plurality of fans 15 are provided on one side of the bending tube 3, and a diffusion unit 16 for driving the plurality of fans 15 to rotate is provided on the outer wall of the tank body 1, and the diffusion unit 16 is used to diffuse the powdered curing agent; The dispersion unit 16 includes a shell 20 located outside the fan 15, the rotating shaft of the fan 15 is rotatably connected to the inner wall of the shell 20, there are three shells 20, and each shell 20 is connected to each other through a hollow tube body, and the three shells 20 are respectively aligned with the respective notches 8 of the vertical part 1 5, the vertical part 2 6 and the vertical part 3 7 from top to bottom, and the outer wall of the shell 20 located at the bottom of the tank body 1 is provided with a connecting pipe 21 and is connected to each other, the connecting pipe 21 passes through the cover body 2 and the frame body 14 and is fixedly connected to the two, and the end of the connecting pipe 21 is provided with a fan 22 and is connected to the air outlet of the fan 22, and the rotating shaft of the fan 22 and the rotating shaft of the motor 13 are connected to each other through a coupling, and the gas entering the shell 20 through the connecting pipe 21 drives the fan 15 to rotate, and the wind generated by the rotation of the fan 15 moves to the outside of the notch 8, thereby effectively dispersing the powdered curing agent in this area; The end of the shell 20 is shaped like a cone that gathers inward. The cone shape can enhance the strength of the air blown out by the fan 15, so that the dispersion effect of the curing agent is better. A connecting frame 23 is provided at the end of the rotating shaft of the fan 15 and is fixedly connected thereto. The overall shape of the connecting frame 23 is C-shaped. A partition 24 is provided at the other end of the connecting frame 23 and is fixedly connected thereto. The partition 24 is rotatably connected to the bending tube 3. The partition 24 has a through groove. When the fan 15 rotates, the connecting effect of the connecting frame 23 will drive the partition 24 to rotate, thereby increasing the blowing direction of the divergent air body, which is more conducive to the combination of the curing agent and the metal objects in the sludge.

[0020] When in use, the metal sludge will be put into the tank body 1 from the feed port just above the cover body 2, and then it will fall above the end of the conical shell 9 and spread to the inclined area of ​​the conical shell 9, and finally fall between the outer wall of the conical shell 9 and the inner wall of the tank body 1, so that the sludge is gradually accumulated inside the tank body 1; at this time, the motor 13 is started to drive the flat gear 12 and the gear ring 11 to mesh and transmit, so that the tank body 1 also rotates accordingly, and under the centrifugal force of the rotation of the tank body 1, the water and the mixture in the accumulated sludge will be separated, so that the heavier mixture will be displaced to the area close to the inner wall of the tank body 1, which is just within the range of the curing agent placed in the notch 8 of the bending tube 3, and the centrifugal force will also drive the sludge to rotate continuously, so that the solidified area of ​​the sludge itself changes in real time, and the two effects cooperate with each other to make the mixing effect of the curing agent and the metal in the sludge better; At the same time, the storage box 4 also puts curing agent into the bending tube 3, and the curing agent will automatically flow into the vertical part 1 5, the vertical part 2 6 and the vertical part 3 7 of the bending tube 3, and finally be discharged into the tank body 1 from the slot 1 8. Since the widths of the vertical part 1 5, the vertical part 2 6 and the vertical part 3 7 are different, as the powder curing agent accumulates, the curing agent capacity inside the vertical part 3 7 will be greater than the vertical part 2 6 and the vertical part 1 5 in turn, and then the curing agent content discharged from the slot 1 8 will also be different, corresponding to the curing agent content required by the upper, middle and lower layers inside the tank body 1, thereby ensuring the rationality of the curing agent input, so that the sludge metal objects precipitated at the bottom of the tank body 1 can still get the curing agent input amount that is suitable for it, so that the combination of the metal objects can reach the expected indicators and reduce the phenomenon of secondary pollution after recycling.

[0021] In addition, the rotating shaft of the motor 13 will also drive the fan 22 to supply air. The wind enters from the bottom shell 20 through the connecting pipe 21 and gradually climbs upward, thereby blowing the fan 15 to rotate, dispersing the powdered curing agent at the notch 8 in different areas inside the bending tube 3, ensuring that the curing agent can be dispersed in advance during the sludge feeding process. At the same time, the force of the wind here can also support the internal expansion of the curing agent in the accumulated state of the sludge, so that the sludge metal objects and the curing agent are more evenly integrated. It is worth noting that Since the wind is transported from bottom to top in the three shells 20, the impact force of the wind on the inside of the three shells 20 should be gradually reduced from bottom to top. Therefore, the fan 15 at the bottom will obtain a larger rotation speed, so that the curing agent inside the vertical part three 7 can obtain more diffusion effect. Similarly, the vertical part two 6 and the vertical part one 5 will obtain medium and weaker diffusion effects, which will match the curing agent content required by the upper, middle and lower three layers of sludge in the tank body 1 again, further ensuring the curing effect of the metal in the sludge.

[0022] According to the above embodiment, embodiment 2, The inner wall of the bending tube 3 is provided with a plurality of notches 17, the central axis of the notches 17 is facing the inner wall of the tank body 1, this orientation makes it more convenient for water to spray toward the inner wall of the tank body 1 through the notches 17, thereby enhancing the cleaning effect. A shielding bar 18 is provided on one side of the notch 17 to shield it, and the shielding bar 18 is slidably connected to the bending tube 3 in the up-down direction. A water diversion unit 19 is provided on the outside of the tank body 1 to push the shielding bar 18 to move downward, and the water diversion unit 19 is used to flush the residual sludge on the inner wall of the tank body 1, thereby ensuring the cleanliness of the tank body 1 for secondary use; The water diversion unit 19 includes a vertical rod 25 located at the upper end of the shielding bar 18, the bottom end of the vertical rod 25 is fixedly connected to the shielding bar 18, a cylinder 26 is provided at the end of the vertical rod 25 and is fixedly connected to the push rod of the cylinder 26, the cylinder 26 is fixedly connected to the cover body 2 through a fixing frame, a bending rod 27 is provided on the outer wall of the vertical rod 25 and is fixedly connected to the bending rod 27, the bending rod 27 is L-shaped, a folding plate 28 is provided at the end of the bending rod 27 and is fixedly connected to the bending tube 3, the bottom end portion of the folding plate 28 is located inside the bending tube 3 and slides relatively therewith, a plug body 29 is provided on the inner wall of the folding plate 28 and is fixedly connected therewith, a pipe 30 is provided on the outer wall of the plane part of the plug body 29, the end of the pipe 30 is fixedly connected to the bending tube 3 and communicated therewith, a water tank 31 is provided at the end of the pipe 30 and is connected therewith, and one side of the water tank 31 and the storage box 4 are both fixedly connected to the frame 14; After the sludge recovery is completed, the cylinder 26 can be started to push the vertical rod 25 downward, and the vertical rod 25 will drive the bottom end of the shielding strip 18 to move down to contact the bottom inner wall of the bent tube 3. In this state, the shielding strip 18 will block the notch 8, and at the same time, the flat part of the plug body 29 passes over the upper end part of the pipe 30 with a smaller cross-section and enters the area with a larger cross-section of the pipe 30. The bottom of the folding plate 28 will also contact the inner wall of the bent tube 3, blocking the passage of the storage box 4 into the bent tube 3. This is to allow the water in the water tank 31 to enter the bent tube 3 through the pipe 30, and at the same time, the shielding strip 18 that moves downward The baffle 18 will also lose its shielding effect on the slot 2 17, causing the water to be discharged to the outside from multiple slots 2 17. Since the central axis of the slot 2 17 is directly opposite to the inner wall of the tank body 1, and there are three slots 2 17, corresponding to the upper, middle and lower layers of the tank body 1, the sprayed water will directly act on the multi-layer tank wall. At the same time, the air supply system of the fan 22 can still work, which has a good promoting effect on the eruption of the water. The bending tube 3 and the diverging unit 16 used for feeding are reused with different effects, saving the use cost, making the cleaning effect of the inner wall of the tank body 1 better, and facilitating the secondary use of this equipment.

[0023] According to the above embodiment, embodiment 3, The shielding strip 18 includes a bending portion 34, the length of which is less than the length of the slot 8. When the bottom end of the shielding strip 18 is in contact with the inner bottom surface of the bending tube 3, the bending portion 34 cannot completely block the slot 8. In this state, the gap formed by the bending portion 34 and the slot 8 is aligned with the inclined area of ​​the conical shell 9; in this state, the water injected by the water diversion unit 19 will be simultaneously sprayed outward from the slot 2 17 at the upper end of the bending tube 3 and the partially blocked slot 8, so that the water body not only cleans the upper inner wall of the tank body 1, but also takes into account the inclined area of ​​the conical shell 9 opposite to the slot 8, so that the surface of the conical shell 9 remains clean, ensuring the uniform diffusion effect of sludge when it is used next time.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dredging device for precious metal waste treatment, comprising a tank body (1), characterized in that: The upper part of the tank body (1) is provided with a cover body (2), the interior of the tank body (1) is provided with a bending tube (3) for feeding curing agent, the bending tube (3) passes through the cover body (2) and is fixedly connected thereto, the end of the bending tube (3) is provided with a material storage box (4), the bending tube (3) comprises a vertical part 1 (5), a vertical part 2 (6) and a vertical part 3 (7), the vertical part 1 (5), the vertical part 2 (6) and the vertical part 3 (7) are respectively located in the upper section, the middle section and the lower section of the tank body (1), and the inner walls of the vertical part 1 (5), the vertical part 2 (6) and the vertical part 3 (7) are all provided with a notch 1 (8) of equal area; The tank body (1) is provided with a conical shell (9) inside, the outer wall of the conical shell (9) is provided with a connecting rod (10), the end of the connecting rod (10) is fixedly connected to the tank body (1), the outer wall of the tank body (1) is provided with a toothed ring (11), one side of the toothed ring (11) is provided with a spur gear (12) meshing with the toothed ring (11), a motor (13) is provided below the spur gear (12), the spur gear (12) is fixedly connected to the rotating shaft of the motor (13), a base (36) is provided at the bottom of the tank body (1) and is rotatably connected to the base (36), the outer wall of the cover body (2) is provided with a frame (14), the bottom end of the frame (14) is fixedly connected to the base (36); A plurality of fans (15) are provided on one side of the bending tube (3), and a diffusion unit (16) for driving the plurality of fans (15) to rotate is provided on the outer wall of the tank body (1), wherein the diffusion unit (16) is used to diffuse the powdery curing agent; The inner wall of the bending tube (3) is provided with a plurality of slots (17), the central axis of the slots (17) faces the inner wall of the tank body (1), a shielding strip (18) is provided on one side of the slots (17) for shielding the slots, and a water diversion unit (19) is provided on the outside of the tank body (1) for pushing the shielding strip (18) to move downward, and the water diversion unit (19) is used to flush residual sludge on the inner wall of the tank body (1).

2. The dredging equipment for precious metal waste treatment according to claim 1, characterized in that: The diffusion unit (16) comprises a shell (20) located outside the fan (15). There are three shells (20) in total, and each shell (20) is connected to each other through a hollow tube. At the same time, the three shells (20) are aligned with the respective slots (8) of the vertical part 1 (5), the vertical part 2 (6) and the vertical part 3 (7) from top to bottom. The outer wall of the shell (20) located at the bottom of the tank body (1) is provided with a connecting pipe (21). The connecting pipe (21) passes through the cover body (2) and the frame body (14). The end of the connecting pipe (21) is provided with a fan (22) and is connected to the air outlet of the fan (22). The rotating shaft of the fan (22) and the rotating shaft of the motor (13) are connected to each other through a coupling. The gas entering the shell (20) through the connecting pipe (21) drives the fan (15) to rotate, and the wind generated by the rotation of the fan (15) moves to the outside of the slot 1 (8).

3. The dredging equipment for precious metal waste treatment according to claim 2, characterized in that: The end of the shell (20) is shaped like a cone that converges inwards. The end of the fan (15) shaft is provided with a connecting frame (23). The end of the connecting frame (23) is provided with a partition (24) and is fixedly connected thereto. The partition (24) is rotatably connected to the bending tube (3).

4. The desilting equipment for precious metal waste treatment according to claim 1, characterized in that: The water diversion unit (19) comprises a vertical rod (25) located at the upper end of the shielding strip (18), a cylinder (26) being provided at the end of the vertical rod (25), a bending rod (27) being provided at the outer wall of the vertical rod (25), a folding plate (28) being provided at the end of the bending rod (27), a bottom end portion of the folding plate (28) being located inside the bending tube (3) and sliding relative thereto, a plug body (29) being provided at the inner wall of the folding plate (28), a pipe (30) being provided at the outer wall of the plane portion of the plug body (29), and a water tank (31) being provided at the end of the pipe (30).

5. The dredging equipment for precious metal waste treatment according to claim 4, characterized in that: When the bottom end of the shielding strip (18) moves down to a state where it contacts the bottom inner wall of the bent tube (3), the shielding strip (18) shields the first slot (8), and at the same time, the flat portion of the plug body (29) passes over the upper end of the pipe (30), allowing the water in the water tank (31) to enter the bent tube (3) through the pipe (30), and at the same time, the shielding strip (18) loses its shielding effect on the second slot (17).

6. The dredging equipment for precious metal waste treatment according to claim 1, characterized in that: A second connecting frame (32) is provided below the cover body (2); a stirring rod (33) is provided on the inner wall of the second connecting frame (32) and is fixedly connected thereto; the stirring rod (33) is located on the inner wall of the conical shell (9) and rotates relative thereto.

7. The dredging equipment for precious metal waste treatment according to claim 4, characterized in that: The shielding strip (18) comprises a bending portion (34), the length of the bending portion (34) being shorter than the length of the slot one (8); when the bottom end of the shielding strip (18) is in contact with the inner bottom surface of the bending tube (3), the bending portion (34) cannot completely shield the slot one (8); in this state, the notch formed by the bending portion (34) and the slot one (8) is aligned with the inclined surface area of ​​the conical shell (9).

8. The dredging equipment for precious metal waste treatment according to claim 1, characterized in that: The inner wall of the tank body (1) is provided with a filter plate (35), and the filter plate (35) is used to filter water in the sludge.

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