A dredging device for treating precious metal waste

Abstract

The present invention discloses a silt cleaning device for treating precious metal waste, which relates to the technical field of metal waste recycling. It includes a tank body, and a cover body is provided at the upper part of the tank body. A bent pipe for feeding a curing agent is arranged inside the tank body. The bent pipe passes through the cover body and is fixedly connected thereto. A storage box is provided at the end of the bent pipe. The bent pipe includes 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 respectively located in the upper, middle and lower regions of the tank body. Equal-area notch one is provided on the inner walls of the first vertical part, the second vertical part and the third vertical part. In this device, the silt metal substances precipitated at the bottom of the tank body can still obtain a curing agent dosage adapted to them, enabling the combination of the metal substances to reach the expected index and reducing the occurrence of secondary pollution.

Description

Technical Field

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

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

[0003] The common current method for recycling metal sludge is to add solidifying agents such as cement, lime or fly ash to the metal sludge, mix them with the sludge, wrap the heavy metals in the solidified body, reduce their mobility and bioavailability, and stabilize the heavy metals in the solidified sludge to meet the standards of various engineering constructions. However, in the solidification technology of metal sludge, heavy metals are prone to precipitate at the bottom of the sludge because heavy metal particles will gradually deposit to the bottom layer of the sludge under the action of gravity. The traditional means of adding solidifying agents is to mix the required solidifying agents and then directly put them into the sludge, and then stir the two. Due to the viscosity of the sludge and the easy reactivity of the solidifying agents themselves, this causes some solidifying agents to lose their reactivity before they can combine with the metal substances at the bottom, and then the combination of metal substances in the sludge cannot reach the expected index. If the precipitated heavy metals are not properly treated, they may be released back into the environment when the environmental conditions change, causing secondary pollution.

[0004] Therefore, the present invention proposes 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 art. To achieve the above purpose, the present invention provides the following technical solution: A dredging device for precious metal waste treatment, including a tank body, a cover body is provided on the upper part of the tank body, a bent pipe for feeding solidifying agents is arranged inside the tank body, the bent pipe passes through the cover body and is fixedly connected thereto, a storage tank is provided at the end of the bent pipe, the bent pipe includes 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 respectively located in the upper, middle and lower regions of the tank body, and the inner walls of the first vertical part, the second vertical part and the third vertical part are all provided with notch one with equal areas;

[0006] Inside the tank body, there is a conical shell. On the outer wall of the conical shell, there are connecting rods, and the ends of the connecting rods are fixedly connected to the tank body. On the outer wall of the tank body, there is a toothed ring. On one side of the toothed ring, there is a spur gear meshing with it. Below the spur gear, there is a motor, and the spur gear is fixedly connected to the rotating shaft of the motor. At the bottom of the tank body, there is a base and it is rotatably connected to the base. On the outer wall of the cover body, there is a frame body, and the bottom end of the frame body is fixedly connected to the base;

[0007] On one side of the bent pipe, there are multiple fans. On the outer wall of the tank body, there is a diverging unit for driving the multiple fans to rotate, and the diverging unit is used for diverging the powdery curing agent;

[0008] On the inner wall of the bent pipe, there are multiple notches two. The central axis of the notch two faces the inner wall of the tank body. On one side of the notch two, there is a shielding strip for shielding it. Outside the tank body, there is a water diversion unit for pushing the shielding strip to move downward, and the water diversion unit is used for flushing the residual sludge on the inner wall of the tank body.

[0009] Preferably, the diverging unit includes a housing located outside the fan. There are three housings in total, and each housing is connected to each other through a hollow pipe body. At the same time, the three housings are respectively aligned with the notches one of the vertical part one, the vertical part two, and the vertical part three from top to bottom. On the outer wall of the housing at the bottom of the tank body, there is a connecting pipe. The connecting pipe penetrates through the cover body and the frame body. At the end of the connecting pipe, there is a blower and it is connected to the air outlet of the blower. The rotating shaft of the blower is connected to the rotating shaft of the motor through a coupling. The gas entering the housing through the connecting pipe pushes the fan to rotate, and the air generated by the rotation of the fan moves towards the outside of the notch one.

[0010] Preferably, the end of the housing is shaped like a cone that converges inward. At the end of the rotating shaft of the fan, there is a connecting frame one. At the end of the connecting frame one, there is a partition plate and it is fixedly connected to the partition plate. The partition plate is rotatably connected to the bent pipe.

[0011] Preferably, the water diversion unit includes a vertical rod located at the upper end of the shielding strip. At the end of the vertical rod, there is a cylinder. On the outer wall of the vertical rod, there is a bent rod. At the end of the bent rod, there is a folding plate. The bottom end part of the folding plate is located inside the bent pipe and slides relative to it. On the inner wall of the folding plate, there is a plug body. On the outer wall of the flat part of the plug body, there is a pipe. At the end of the pipe, there is a water tank.

[0012] Preferably, when the bottom end of the shielding strip moves down to contact the inner wall of the bottom surface of the bent pipe, the shielding strip shields the notch one. At the same time, the flat part of the plug body crosses the upper end part of the pipe, so that the water in the water tank enters the bent pipe through the pipe. At the same time, the shielding strip loses the shielding effect on the notch two.

[0013] 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 fixedly connected thereto. The stirring rod is located on the inner wall of the conical shell and rotates relative to it.

[0014] Preferably, the shielding strip includes a bent portion. The length of the bent portion is less than the length of the first notch. In a state where the bottom end of the shielding strip contacts the inner bottom surface of the bent pipe, the bent portion cannot completely shield the first notch. In this state, the notch formed by the bent portion and the first notch is aligned with the inclined surface area of the conical shell.

[0015] Preferably, a filter plate is provided on the inner wall of the tank body. The filter plate is used to filter the water in the sludge.

[0016] The present invention has at least the following beneficial effects:

[0017] 1. In the present invention, the metal sludge will fall between the outer wall of the conical shell and the inner wall of the tank body. The motor drives the tank body to rotate. Under the action of centrifugal force, the heavier mixture moves to the area close to the inner wall of the tank body. This area is within the range where the bent pipe discharges the curing agent. At the same time, the centrifugal force will also drive the sludge to rotate continuously, so that the self-curing area of the sludge is changing in real time. The two effects cooperate with each other to make the mixing effect of the curing agent and the metal in the sludge better;

[0018] Since the widths of the first vertical portion, the second vertical portion, and the third vertical portion are different, as the accumulated curing agent is input, the capacity inside the third vertical portion will be greater than that of the second vertical portion and the first vertical portion in turn. Therefore, the content of the curing agent discharged from the first notch is also different, corresponding to the content of the curing agent required for 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 obtain the curing agent input amount adapted to them, enabling the combination of the metal objects to reach the expected index and reducing the occurrence of secondary pollution.

[0019] 2. In the present invention, the motor shaft drives the fan to supply air. The air body enters from the bottommost shell through the connecting pipe and gradually climbs upward and blows the fan to rotate, dispersing the powdery curing agent at the first notch in different areas inside the bent pipe, ensuring that the curing agent can be more evenly diffused in the sludge; Since the air body is conveyed in the three shells from bottom to top, the impact force of the air body received inside the three shells should gradually decrease from bottom to top. Therefore, the fan at the bottommost will obtain a larger rotation speed, enabling the curing agent inside the third vertical portion to obtain more diffusion effect. By analogy, the second vertical portion and the first vertical portion will obtain medium and weak diffusion effects, further corresponding to the content of the curing agent required for the upper, middle, and lower layers of the sludge inside the tank body, further ensuring the curing effect of the sludge metal objects at different levels. Description of the Drawings

[0020] Figure 1 Schematic diagram of the overall structure of the present invention;

[0021] Figure 2 Cross-sectional view of the tank body structure of the present invention;

[0022] Figure 3 Schematic diagram of the bent pipe and its accessories structure of the present invention;

[0023] Figure 4 For the present invention Figure 3 Enlarged view of the structure of area A in;

[0024] Figure 5 Cross-sectional view of the divergence unit and water diversion unit structure of the present invention;

[0025] Figure 6 For the present invention Figure 5 Enlarged view of the structure of area B in;

[0026] Figure 7 For the present invention Figure 5 Enlarged view of the structure of area C in;

[0027] Figure 8 Cross-sectional view of the bent pipe structure of the present invention;

[0028] Figure 9 For the present invention Figure 8 Enlarged view of the structure of area D in;

[0029] Figure 10 Schematic diagram of the shielding strip structure of the present invention.

[0030] In the figure: 1 - tank body; 2 - cover body; 3 - bent pipe; 4 - storage box; 5 - first vertical part; 6 - second vertical part; 7 - third vertical part; 8 - first notch; 9 - conical shell; 10 - connecting rod; 11 - toothed ring; 12 - spur gear; 13 - motor; 14 - frame; 15 - fan; 16 - divergence unit; 17 - second notch; 18 - shielding strip; 19 - water diversion unit; 20 - housing; 21 - connecting pipe; 22 - air blower; 23 - first connecting frame; 24 - partition board; 25 - vertical rod; 26 - cylinder; 27 - bent rod; 28 - folding plate; 29 - plug body; 30 - pipeline; 31 - water tank; 32 - second connecting frame; 33 - stirring rod; 34 - bent part; 35 - filter plate; 36 - base. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figure 1-10 , the present invention provides a technical solution: a dredging device for treating precious metal waste, including:

[0033] Example 1,

[0034] A tank body 1, a cover body 2 is provided at the upper part of the tank body 1 and rotates relative to it. A bent pipe 3 for feeding a curing agent is provided inside the tank body 1. The substance type of the cured product is usually powdery. The bent pipe 3 passes through the cover body 2 and is fixedly connected to it. A storage tank 4 is provided at the end of the bent pipe 3 and is connected to it. The storage tank 4 is driven by an external device to automatically feed the curing agent into the bent pipe 3. The bent pipe 3 includes a first vertical part 5, a second vertical part 6, and a third vertical part 7. The first vertical part 5, the second vertical part 6, and the third vertical part 7 are respectively located in the upper, middle, and lower regions of the tank body 1. The width of the third vertical part 7 is greater than that of the second vertical part 6, and the width of the second vertical part 6 is greater than that of the first vertical part 5. The inner walls of the first vertical part 5, the second vertical part 6, and the third vertical part 7 are all provided with notches 8 of equal area. The powdery curing agent can diffuse into the tank body 1 from the notches 8 through the bent pipe 3;

[0035] A conical shell 9 is provided inside the tank body 1. A second connecting frame 32 is provided below the cover body 2. The overall shape of the second connecting frame 32 is C-shaped, and the two upper ends of the second 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 second connecting frame 32 and is fixedly connected to it. The stirring rod 33 is located on the inner wall of the conical shell 9 and rotates relative to it. The stirring rod 33 can stir the sludge in the tank body 1 when it rotates, increasing the uniformity of the metal substances in the sludge. A connecting rod 10 is provided on the outer wall of the conical shell 9 and is fixedly connected to it. The end of the connecting rod 10 is fixedly connected to the tank body 1. Therefore, the rotation of the tank body 1 will drive the conical shell 9 to rotate together, so that the metal sludge falling from above the tank body 1 is evenly scattered in the area near the inner wall of the tank body 1, facilitating the subsequent feeding work;

[0036] The outer wall of the tank body 1 is provided with a toothed ring 11 and is fixedly connected thereto. On one side of the toothed ring 11, there is a spur gear 12 that meshes with it. Below the spur gear 12, there is a motor 13. The spur gear 12 is fixedly connected to the rotating shaft of the motor 13. The bottom of the tank body 1 is provided with a base 36 and is rotatably connected thereto. The motor 13 is fixedly connected to the base 36 through a fixing frame. The outer wall of the cover body 2 is provided with a frame body 14 and is fixedly connected thereto. The bottom end of the frame body 14 is fixedly connected to the base 36. The inner wall of the tank body 1 is provided with a filter plate 35 and is fixedly connected thereto. The filter plate 35 is used to filter the water in the sludge. During the process of the motor 13 driving the tank body 1 to rotate through transmission, the sludge inside the tank body 1 will, under the action of centrifugal force, cause the lighter water to gather in the central area of the tank body 1, 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 substances in the sludge.

[0037] On one side of the bent pipe 3, there are a plurality of fans 15. The outer wall of the tank body 1 is provided with a divergence unit 16 for driving the plurality of fans 15 to rotate. The divergence unit 16 is used to diverge the powdery curing agent.

[0038] The divergence unit 16 includes a housing 20 located outside the fan 15. The rotating shaft of the fan 15 is rotatably connected to the inner wall of the housing 20. There are three housings 20 in total, and each housing 20 is connected to each other through a hollow pipe body. At the same time, the three housings 20 are respectively aligned with the first notches 8 of the first vertical part 5, the second vertical part 6, and the third vertical part 7 from top to bottom. The outer wall of the housing 20 at the bottom of the tank body 1 is provided with a connecting pipe 21 and is connected thereto. The connecting pipe 21 penetrates through the cover body 2 and the frame body 14 and is fixedly connected to both. The end of the connecting pipe 21 is provided with a blower 22 and is connected to the air outlet of the blower 22. The rotating shaft of the blower 22 is connected to the rotating shaft of the motor 13 through a coupling. The gas entering the inside of the housing 20 through the connecting pipe 21 pushes the fan 15 to rotate. The air generated by the rotation of the fan 15 moves towards the outside of the first notch 8, thereby effectively diverging the powdery curing agent in this area.

[0039] The end of the housing 20 is shaped like a cone that converges inward. The conical shape can enhance the strength of the air blown by the fan 15, making the divergence effect of the curing agent better. The end of the rotating shaft of the fan 15 is provided with a connecting frame 23 and is fixedly connected thereto. The overall shape of the connecting frame 23 is C-shaped. The other 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 bent pipe 3. The partition 24 has its own through slots. When the fan 15 rotates, the partition 24 will be driven to rotate due to the connection effect of the connecting frame 23, thereby increasing the blowing direction of the diverging air, which is more conducive to the combination of the curing agent and the metal in the sludge.

[0040] During use, metal sludge is fed into the tank body 1 from the feed inlet directly above the cover body 2, and then it will fall above the end of the conical shell 9 and spread to the inclined surface 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, causing the sludge to gradually accumulate 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 engage and drive, so that the tank body 1 also rotates accordingly. Under the action of the centrifugal force generated by the rotation of the tank body 1, the water body and the mixture in the accumulated sludge will be separated, and then the heavier mixture will be displaced to the area close to the inner wall of the tank body 1. This area is just within the range of the curing agent being put into the notch one 8 of the bent pipe 3. At the same time, the centrifugal force will also drive the sludge to continuously rotate, causing the self-curing area of the sludge to change in real time. The two effects cooperate with each other to make the mixing effect of the curing agent and the metal in the sludge better;

[0041] Meanwhile, the storage tank 4 also feeds the curing agent into the bent pipe 3. The curing agent will automatically flow into the first vertical part 5, the second vertical part 6 and the third vertical part 7 of the bent pipe 3, and finally be discharged into the tank body 1 from the notch one 8. Since the widths of the first vertical part 5, the second vertical part 6 and the third vertical part 7 are different, as the powder curing agent accumulates, the capacity of the curing agent inside the third vertical part 7 will be greater than that of the second vertical part 6 and the first vertical part 5 in turn. Therefore, the content of the curing agent discharged from the notch one 8 will also be different, corresponding to the content of the curing agent required for the upper, middle and lower layers inside the tank body 1, ensuring the rationality of the curing agent input, so that the sludge metal deposited at the bottom of the tank body 1 can still obtain the appropriate amount of curing agent input, enabling the combination of the metal to reach the expected index and reducing the phenomenon of secondary pollution after recycling.

[0042] In addition, the rotating shaft of the motor 13 will also drive the blower 22 to supply air. The air body enters from the bottommost shell 20 through the connecting pipe 21 and gradually climbs upward, thereby blowing the fan 15 to rotate, and diverging the powdery curing agent at the notch one 8 in different areas inside the bent pipe 3, ensuring that the curing agent can be diverged in advance during the process of the sludge being discharged. At the same time, the acting force of the air body here can also support the inward expansion of the curing agent in the accumulated sludge, making the sludge metal and the curing agent blend more evenly; it should be noted that since the air body is conveyed upward in the three shells 20 from bottom to top, the impact force of the air body received inside the three shells 20 should gradually decrease from bottom to top. Therefore, the fan 15 at the bottommost will obtain a larger rotational speed, enabling the curing agent inside the third vertical part 7 to be more diffusely distributed. By analogy, the second vertical part 6 and the first vertical part 5 will obtain medium and weak diffusion effects, thus coinciding with the content of the curing agent required for the upper, middle and lower layers of the sludge inside the tank body 1 again, further ensuring the curing effect of the metal in the sludge.

[0043] According to the above embodiment, Embodiment Two,

[0044] 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;

[0045] 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;

[0046] 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 of the pipe 30 with a smaller cross-section and enters the area of ​​the pipe 30 with a larger cross-section. 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. At this time, the water in the water tank 31 enters 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.

[0047] According to the above embodiment, embodiment 3,

[0048] The shielding strip 18 includes a bent portion 34, and the length of the bent portion 34 is less than the length of the first notch 8. In a state where the bottom end of the shielding strip 18 is in contact with the inner bottom surface of the bent pipe 3, the bent portion 34 cannot completely shield the first notch 8. In this state, the notch formed by the bent portion 34 and the first notch 8 is aligned with the inclined surface area of the conical shell 9; in this state, the water body injected by the water diversion unit 19 will simultaneously spray out from the second notch 17 at the uppermost end of the bent pipe 3 and the partially shielded first notch 8, so that while the water body cleans the upper inner wall of the tank body 1, it also takes into account the inclined surface area of the conical shell 9 opposite to the first notch 8, keeping the surface of the conical shell 9 clean and ensuring the uniform diffusion effect of the silt during the next use.

[0049] It should be noted that in this article, relational terms such as first and second 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0050] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. 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), and 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, and the end of the bending tube (3) is provided with a material storage box (4), and the bending tube (3) comprises a vertical part 1 (5), a vertical part 2 (6) and a vertical part 3 (7), and 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), the width of the vertical part 3 (7) is greater than that of the vertical part 2 (6), and the width of the vertical part 2 (6) is greater than that of the vertical part 1 (5), 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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