Sludge heavy metal separation device

Abstract

The application discloses a sludge heavy metal separation device and belongs to the technical field of water treatment. Mainly comprising a rack, and a plurality of adsorption components arranged at the bottom of the rack, the adsorption component comprises an electromagnetic rod, a spiral blade, a half shell I and a half shell II, the electromagnetic rod is fixedly connected to the rack, the electromagnetic rod can generate a magnetic field by being electrified, the spiral blade is arranged on the outer peripheral wall of the electromagnetic rod and can rotate relative to the electromagnetic rod around the axis of the electromagnetic rod, a discharge port is arranged close to the upper end of the electromagnetic rod, the half shell I and the half shell II are respectively arranged on the opposite sides of the electromagnetic rod, the half shell I is in sliding connection with the rack, the half shell II is also in sliding connection with the rack, when the half shell I and the half shell II are moved to be close to each other and then abut against each other, the half shell I and the half shell II can be combined to form a complete cylindrical body, and the cylindrical body is sleeved outside the spiral blade. The sludge heavy metal separation device can improve the separation efficiency of heavy metals.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water treatment, in particular to a sludge heavy metal separation device. BACKGROUND

[0002] In order to effectively remove heavy metal elements such as lead, arsenic, thallium and antimony in sewage, the pH value of water sludge is adjusted to the range of 8 to 9 in the prior art; then a proper amount of nano zero-valent iron reagent is added to the water sludge; and then the nZVI (nano zero-valent iron) adsorbed with heavy metals is separated from water soil or water sludge. In the separation process, an electromagnetic device is usually used for separation in the prior art. For example, the application number CN201110360190.4 discloses a nano zero-valent iron-electromagnetic rake combined heavy metal contaminated soil / sludge remediation process. The electromagnetic rake device disclosed therein uses a traveling electromagnetic rake on a track to generate a magnetic field by a columnar magnetic strip installed on the traveling device to adsorb the nZVI with magnetism. The traveling device moves back and forth in the electromagnetic rake separation zone or reaction zone to continuously adsorb the nZVI in the soil / sludge mixture. When the electromagnetic rake absorbs a certain amount of nZVI, the traveling device moves to the heavy metal recovery tank, the power supply of the electromagnetic rake is cut off, and the nZVI adsorbed on the magnetic column is completely detached into the heavy metal recovery tank. After that, the power supply of the electromagnetic rake is connected, and the electromagnetic rake starts to work again. However, the existing electromagnetic rake device needs to be moved to the heavy metal recovery tank after adsorbing a certain amount of nZVI. The electromagnetic rake device needs to move back and forth between the heavy metal recovery tank and the electromagnetic rake separation zone, or between the heavy metal recovery tank and the reaction zone, which significantly affects the heavy metal separation efficiency and the working efficiency needs to be improved.

[0003] Therefore, it is necessary to provide a new sludge heavy metal separation device. SUMMARY

[0004] Based on the above problems existing in the prior art, the purpose of the embodiments of the present application is to provide a sludge heavy metal separation device which can improve the separation efficiency of heavy metals.

[0005] To achieve the above object, the technical scheme adopted by the present application is: provide a kind of sludge heavy metal separation device, including rack, and multiple adsorption components being arranged in the bottom of the rack, the adsorption component includes electromagnetic rod, spiral blade, half shell one and half shell two, the electromagnetic rod is fixedly connected on rack, the electromagnetic rod can generate magnetic field by energization, the spiral blade is around the outer peripheral wall of electromagnetic rod, and the spiral blade can rotate relative to electromagnetic rod about the axis of electromagnetic rod, discharge port is equipped in the upper end of the electromagnetic rod, the half shell one and the half shell two are located at the opposite sides of electromagnetic rod respectively, and the half shell one is slidably connected with rack, and the half shell two is also slidably connected with rack, when the half shell one and the half shell two are moved to the half shell one and the half shell two are close to each other, the half shell one and the half shell two can be combined to form complete cylinder, and the cylinder is sleeved on the spiral blade, so that the inner peripheral wall of cylinder is attached to the outer peripheral wall of spiral blade, when the spiral blade is driven to rotate relative to electromagnetic rod and cylinder, the spiral blade can push nZVI adhered to the outer of electromagnetic rod along the spiral axis to the top end of electromagnetic rod, and make nZVI be pushed out of discharge port.

[0006] Further, the spiral blade is a structure that extends spirally about the axis of the electromagnetic rod, and the spiral blade has a cylindrical cavity at the axis line thereof, which is adapted for the electromagnetic rod to pass through.

[0007] Further, the adsorption component further comprises a rotating roller, which is rotatably connected to the rack, and the rotating roller is fixedly connected to the upward end of the spiral blade.

[0008] Further, a stopper is arranged between the spiral blade and the rotating roller, and the stopper blocks the upper side of the discharge port.

[0009] Further, the half shell one and the half shell two are identical in shape, the half shell one has a semicircular cross section, and the side close to the electromagnetic rod has a side opening, and the side close to the electromagnetic rod of the half shell two also has a side opening.

[0010] Further, the reciprocating direction of the half shell one and the half shell two in the sludge mixture along with the rack is perpendicular to the plane where the half shell one, the half shell two and the electromagnetic rod are located.

[0011] Further, the adsorption component further comprises a discharge cylinder, which is fixedly connected to the rack and located above the half shell one and the half shell two, and the discharge cylinder is open at least at the lower end, when the half shell one and the half shell two are close to each other, the upper end of the half shell one and the half shell two is butted with the lower end of the discharge cylinder, so that the upper end of the cylinder formed by the combination of the half shell one and the half shell two is aligned with and communicated with the lower end opening of the discharge cylinder.

[0012] Further, the rack is provided with a traction rod one and a traction rod two which slide in horizontal direction, the half shell one is connected with the traction rod one, and the half shell two is connected with the traction rod two.

[0013] Further, the electromagnetic rod is in a round rod type structure.

[0014] Further, the sludge heavy metal separation device further comprises a walking mechanism connected with the rack.

[0015] The sludge heavy metal separation device provided by the present application comprises a rack, a plurality of adsorption assemblies arranged on the bottom of the rack, an electromagnetic rod, a spiral blade, a half shell one and a half shell two, the electromagnetic rod is fixedly connected to the rack, the electromagnetic rod can generate a magnetic field by being electrified, thereby adsorbing the nZVI which can be magnetically attracted, the spiral blade is arranged on the outer peripheral wall of the electromagnetic rod and can rotate relative to the electromagnetic rod about the axis of the electromagnetic rod, the upper end of the electromagnetic rod is provided with a discharge port, the half shell one and the half shell two are arranged on the opposite sides of the electromagnetic rod, the half shell one is in sliding fit with the rack, and the half shell two is also in sliding fit with the rack, when the half shell one and the half shell two move towards each other to abut against each other, the half shell one and the half shell two can combine to form a complete cylindrical body, the cylindrical body is sleeved on the spiral blade, the inner peripheral wall of the cylindrical body is in abutment with the outer peripheral wall of the spiral blade, when the spiral blade is driven to rotate relative to the electromagnetic rod and the cylindrical body, the spiral blade can push the nZVI adhered to the outer electromagnetic rod to the top end of the electromagnetic rod along the spiral axis, and the nZVI is pushed out of the discharge port, by the above design, the sludge heavy metal separation device provided by the present application utilizes the action of the half shell one and the half shell two, cooperates with the spiral blade in the adsorption assembly, and forms a structure together with the electromagnetic rod for conveying the nZVI along the axis of the electromagnetic rod, thereby enabling the nZVI to be finally squeezed out of the discharge port, realizing the separation of the nZVI, compared with the prior art, the nZVI does not need to be transferred between the heavy metal recovery tank and the electromagnetic rake separation zone, or between the heavy metal recovery tank and the reaction zone, the time consumed for transferring the nZVI by displacement is omitted, thereby the separation efficiency of the sludge heavy metal separation device for heavy metals can be significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in conjunction with the drawings and examples.

[0017] Figure 1 The present application provides a sludge heavy metal separation device, and a working state of an adsorption assembly is shown.

[0018] Figure 2 The present application provides a sludge heavy metal separation device, and a working state of an adsorption assembly is shown. Figure 1 The present application provides a sludge heavy metal separation device, and a working state of an adsorption assembly is shown.

[0019] Figure 3 is a sectional view along the direction of E-E in figure 1. Figure 2

[0020] Figure 4 is a perspective view of the adsorption assembly provided by the embodiment of the present application, and shows one working state of the adsorption assembly.

[0021] Figure 5 is an exploded view of the adsorption assembly provided by the embodiment of the present application.

[0022] Figure 6 is a sectional view along the direction of F-F in figure 1. Figure 3

[0023] Figure 7 is a sectional view along the direction of F-F in figure 1. Figure 4

[0024] Figure 8 is a sectional view along the direction of F-F in figure 1. Figure 7

[0025] Figure 9 is a perspective view of the adsorption assembly provided by the embodiment of the present application, and shows another working state of the adsorption assembly.

[0026] Figure 10 is a sectional view along the direction of F-F in figure 1. Figure 9 Figure 7

[0027] Figure 11 is a schematic view of the sludge heavy metal separation device shown in figure 1 from another perspective. Figure 1

[0028] Figure 12 is a perspective view of the sludge heavy metal separation device provided by the embodiment of the present application, and shows another working state of the adsorption assembly.

[0029] Figure 13 is a sectional view along the direction of G-G in figure 1. Figure 2

[0030] In the figure, the reference signs are as follows: 1, frame; 2, adsorption assembly; 21, electromagnetic rod; 211, electromagnetic core; 212, shell; 22, spiral blade; 221, stop block; 23, half shell one; 24, half shell two; 25, rotating roller; 251, transmission ring; 26, discharge cylinder; 27, transmission wheel; 28, conveying cavity; 29, discharge port; 3, traction rod one; 4, traction rod two; 5, discharge connector. DETAILED DESCRIPTION

[0031] ​​​​​​​​In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0032] It should be noted that when an element is referred to as being "connected to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0035] Throughout the specification, reference to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Therefore, the phrases "in one embodiment", "in some embodiments", or "in some embodiments" appearing in various places throughout the specification are not all referring to the same embodiment. Furthermore, particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0036] Reference should be made to Figures 1 to 13As shown, the sludge heavy metal separation device provided by the present application is described as follows, which comprises a rack 1, and a plurality of adsorption assemblies 2 arranged at the bottom of the rack 1. The adsorption assembly 2 comprises an electromagnetic rod 21, a spiral blade 22, a half shell one 23 and a half shell two 24. The electromagnetic rod 21 is fixedly connected to the rack 1. The electromagnetic rod 21 can generate a magnetic field by being electrified, so as to adsorb the nZVI which can be magnetically attracted by the generated magnetic field. The spiral blade 22 is arranged around the outer peripheral wall of the electromagnetic rod 21, and the spiral blade 22 can rotate relative to the electromagnetic rod 21 around the axis line of the electromagnetic rod 21. As shown in Figure 10 As shown, the upper end of the electromagnetic rod 21 is provided with a discharge port 29. The half shell one 23 and the half shell two 24 are respectively arranged at the opposite sides of the electromagnetic rod 21. The half shell one 23 is in sliding fit with the rack 1, and the half shell two 24 is also in sliding fit with the rack 1. When the half shell one 23 and the half shell two 24 are moved to be close to each other, the half shell one 23 and the half shell two 24 can be combined to form a complete cylindrical body, and the cylindrical body is sleeved outside the spiral blade 22, so that the inner peripheral wall of the cylindrical body is attached to the outer peripheral wall of the spiral blade 22. At this time, when the spiral blade 22 is driven to rotate relative to the electromagnetic rod 21 and the cylindrical body, the spiral blade 22 can push the nZVI attached to the outer electromagnetic rod 21 to the top end of the electromagnetic rod 21 along the spiral axis, and make the nZVI be pushed out of the discharge port 29. Through the above design, the sludge heavy metal separation device provided by the present application utilizes the action of the half shell one 23 and the half shell two 24, cooperates with the spiral blade 22 in the adsorption assembly 2, and forms a structure together with the electromagnetic rod 21 for conveying the nZVI along the axis of the electromagnetic rod 21, so that the nZVI can be finally squeezed out of the discharge port 29, realizes the separation of the nZVI, and compared with the prior art, the nZVI does not need to be transferred back and forth between the heavy metal recovery tank and the electromagnetic rake separation zone, or between the heavy metal recovery tank and the reaction zone, the time consumed for transferring the nZVI by displacement is omitted, so that the separation efficiency of the sludge heavy metal separation device for heavy metals can be significantly improved.

[0037] In some embodiments, the sludge heavy metal separation device further comprises a walking mechanism connected to the rack 1, so as to drive the rack 1 and the adsorption assembly 2 to reciprocate by the walking mechanism, so that the adsorption assembly 2 can fully contact and adsorb the nZVI. Specifically, the walking mechanism can be but is not limited to a linear module or a mechanical hand.

[0038] As shown in Figure 5 In some embodiments, the spiral blade 22 is a structure spirally extending around the axis line of the electromagnetic rod 21, and the axis line of the spiral blade 22 has a cylindrical cavity suitable for the electromagnetic rod 21 to pass through.

[0039] As shown in Figure 3 and Figure 4As shown, in some embodiments, the electromagnetic rod 21 has a cylindrical structure to adapt to the inner ring shape of the spiral blade 22, so that the cylindrical cavity of the inner ring of the spiral blade 22 can just be passed through by the electromagnetic rod 21, so that the inner peripheral wall of the spiral blade 22 is in contact with the outer peripheral wall of the electromagnetic rod 21. In this way, when the spiral blade 22 rotates, it can scrape the nZVI attached to the outer peripheral wall of the electromagnetic rod 21 through the spiral curved surface, thereby pushing and moving the nZVI.

[0040] like Figure 5 or Figure 10 As shown, in some embodiments, the electromagnetic rod 21 includes an electromagnetic core 211 and a shell 212 enclosing the electromagnetic core 211. The electromagnetic core 211 is capable of generating a magnetic field force when energized, such as... Figure 6 As shown, the outer casing 212 is fixedly connected to the frame 1. The outer casing 212 protects the electromagnetic core 211, ensuring that the spiral blade 22 can only contact the outer wall of the outer casing 212. Furthermore, the outer casing 212 is made of a material that can be penetrated by a magnetic field, allowing the electromagnetic core 211 to still attract the nZVI located outside the outer casing 212 through magnetic force. Specifically, the electromagnetic core 211 is an electromagnet structure.

[0041] like Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, the adsorption assembly 2 further includes a rotating roller 25, which is rotatably fitted onto the frame 1 and is fixedly connected to the upward-facing end of the spiral blade 22.

[0042] like Figure 6 and Figure 8 As shown, in some embodiments, a stop 221 is provided between the spiral blade 22 and the roller 25. The stop 221 blocks the upper side of the discharge port 29. The stop 221 is used to block the nZVI that is pushed upward by the spiral blade 22, forcing the nZVI to stop and accumulate near the discharge port 29 and unable to continue to move upward, so that the nZVI can only be discharged outward through the discharge port 29.

[0043] like Figure 4 and Figure 13 As shown, in some embodiments, half-shell 23 and half-shell 24 have the same shape. Half-shell 23 has a semi-circular cross-section and a side opening on the side near the electromagnetic rod 21. Half-shell 24 also has a side opening on the side near the electromagnetic rod 21. Thus, when half-shell 23 and half-shell 24 slide close to each other until they are in contact, they combine to form a complete cylindrical body. Simultaneously, the cylindrical body is fitted over the spiral blade 22, with the inner wall of the cylindrical body in contact with the outer wall of the spiral blade 22. Figure 10As shown, when half-shell 23 and half-shell 24 converge, a conveying cavity 28 is formed between the inner wall of the cylinder and the outer wall of the outer shell 212 of the electromagnetic rod 21. The spiral blade 22 is housed in the conveying cavity 28. When the spiral blade 22 rotates, the spiral curved surface of the spiral blade 22 generates an axial thrust on the nZVI in the conveying cavity 28, forcing the nZVI in the conveying cavity 28 to move upward. It can be understood that during the process of half-shell 23 and half-shell 24 converging and the spiral blade 22 rotating for conveying, the electromagnetic rod 21 is de-energized and loses its magnetic force. This avoids the electromagnetic rod 21 generating a magnetic attraction force on the nZVI, preventing the nZVI from adhering to the outer peripheral wall of the electromagnetic rod 21 and being easily pushed upward by the spiral blade 22. Figure 4 As shown, when half-shell 23 and half-shell 24 slide away from each other until they separate, the electromagnetic rod 21 is exposed so that the nZVI with adsorbed heavy metal can contact and be adsorbed onto the electromagnetic rod 21.

[0044] like Figure 13 As shown, the direction of the reciprocating movement of half-shell 23 and half-shell 24 in the sludge mixture following the frame 1 is perpendicular to the plane where half-shell 23, half-shell 24 and electromagnetic rod 21 are located. This causes half-shell 23, half-shell 24 and electromagnetic rod 21 to collide with the sludge mixture, thereby agitating and dispersing the sludge mixture and making nZVI more evenly distributed in the sludge mixture. That is, when the adsorption component 2 is performing adsorption, half-shell 23 and half-shell 24 separate. The separation of half-shell 23 and half-shell 24 from electromagnetic rod 21 increases the agitation of the sludge mixture.

[0045] like Figure 5 , Figure 8 and Figure 10 As shown, in some embodiments, the adsorption assembly 2 further includes a discharge cylinder 26, which is fixedly fitted onto the frame 1 and located above the first half-shell 23 and the second half-shell 24. The discharge cylinder 26 has an opening at its lower end. When the first half-shell 23 and the second half-shell 24 are brought close together, their upper ends align with the lower end of the discharge cylinder 26, so that the upper end of the cylindrical body formed by the combination of the first half-shell 23 and the second half-shell 24 is aligned with and communicates with the lower opening of the discharge cylinder 26. More specifically, in this embodiment, the discharge port 29 is located on the side wall of the discharge cylinder 26.

[0046] In some embodiments, the outside of the discharge port 29 is connected to a heavy metal recovery tank (not shown) via a piping structure (not shown).

[0047] like Figure 11As shown, in some embodiments, a discharge connector 5 is provided outside the discharge port 29, communicating with the discharge port 29. The discharge connector 5 is used to connect to the pipeline structure to guide the nZVI output. Specifically, in this embodiment, the discharge connector 5 is located on the outside of the discharge cylinder 26.

[0048] In addition, in some embodiments, a pumping device is provided at the discharge port 29 or the discharge connector 5 to improve the output smoothness of the discharge port 29 and reduce the discharge blockage rate.

[0049] like Figure 1 and Figure 12 As shown, in some embodiments, a first traction rod 3 and a second traction rod 4 are slidably arranged on the frame 1 in the horizontal direction. Half-shell 23 is connected to the first traction rod 3, and half-shell 24 is connected to the second traction rod 4. Thus, when the first traction rod 3 moves from half-shell 23 to half-shell 24, it drives half-shell 23 to move closer to half-shell 24. When the second traction rod 4 moves from half-shell 24 to half-shell 23, it drives half-shell 24 to move closer to half-shell 23. Thus, half-shell 23 and half-shell 24 slide closer to each other until they come together.

[0050] like Figure 1 and Figure 12 As shown, specifically, half-shell 23 in multiple adsorption components 2 are all connected to traction rod 3, and half-shell 24 in multiple adsorption components 2 are all connected to traction rod 4, so that traction rod 3 and traction rod 4 can simultaneously drive half-shell 23 and half-shell 24 in multiple adsorption components 2 to move closer or separate.

[0051] like Figure 1 As shown, in some embodiments, multiple adsorption components 2 are arranged collinearly. A transmission ring 251 is provided on the rotating roller 25. A transmission wheel 27, which rotates and engages with the frame 1, is provided between two adjacent adsorption components 2. The transmission wheel 27 is connected to the transmission ring 251 of the rotating roller 25 in the two adjacent adsorption components 2. Thus, when one of the rotating rollers 25 rotates in a first direction, it drives the transmission wheel 27 to rotate in the opposite second direction, thereby causing the transmission wheel 27 to drive the adjacent rotating roller 25 to rotate in the first direction. In this way, by driving only one rotating roller 25 of the multiple adsorption components 2, the rotating rollers 25 of the multiple adsorption components 2 can be driven to rotate simultaneously in the same direction. Specifically, in this embodiment, the transmission ring 251 and the transmission wheel 27 are connected through a meshing tooth structure.

[0052] It can be understood that, when the adsorption assembly 2 is discharging, preferably, the sludge heavy metal separation device is lifted to above the liquid level of the sludge mixture in the adsorption assembly 2; in addition, the approaching of the half shell one 23 and the half shell two 24 can be before, after or during the lifting of the sludge heavy metal separation device to above the liquid level of the sludge mixture in the adsorption assembly 2.

[0053] The above description is merely preferred embodiments of the present application, but not to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall fall into the scope of protection of the present application.

Claims

1. A sludge heavy metal separation apparatus, characterized by: The application relates to a sludge heavy metal separation device, which comprises a rack and a plurality of adsorption assemblies arranged at the bottom of the rack, wherein the adsorption assemblies comprise an electromagnetic rod, a spiral blade, a half shell I and a half shell II, the electromagnetic rod is fixedly connected to the rack, the electromagnetic rod can generate a magnetic field by being electrified, the spiral blade is arranged on the outer peripheral wall of the electromagnetic rod and can rotate relative to the electromagnetic rod around the axis of the electromagnetic rod, a discharge port is arranged near the upper end of the electromagnetic rod, the half shell I and the half shell II are arranged on the opposite sides of the electromagnetic rod, the half shell I is in sliding fit with the rack, and the half shell II is also in sliding fit with the rack, when the half shell I and the half shell II move towards each other to abut against each other, the half shell I and the half shell II can be combined to form a complete cylindrical body, the cylindrical body is sleeved on the spiral blade, the inner peripheral wall of the cylindrical body is in abutment with the outer peripheral wall of the spiral blade, and when the spiral blade is driven to rotate relative to the electromagnetic rod and the cylindrical body, the spiral blade can push the nZVI adhered to the outer electromagnetic rod to the top end of the electromagnetic rod along the spiral axis, and the nZVI is pushed out of the discharge port.

2. The sludge heavy metal separation apparatus of claim 1, wherein: The spiral blade is in a spiral structure extending around the axis of the electromagnetic rod, and the spiral blade has a cylindrical cavity at the axis for the electromagnetic rod to pass through.

3. The sludge heavy metal separation device of claim 1, wherein: The adsorption assembly further comprises a rotating roller which is rotatably connected to the rack, and the rotating roller is fixedly connected to the upward end of the spiral blade.

4. The sludge heavy metal separation apparatus of claim 3, wherein: A stopper is arranged between the spiral blade and the rotating roller, and the stopper blocks the upper side of the discharge port.

5. The sludge heavy metal separation device of claim 1, wherein: The half shell I and the half shell II are identical in shape, the half shell I has a semicircular cross section, and the side near the electromagnetic rod of the half shell I has a side opening, and the side near the electromagnetic rod of the half shell II has a side opening.

6. The sludge heavy metal separation device of claim 1, wherein: The half shell I and the half shell II are perpendicular to the plane where the half shell I, the half shell II and the electromagnetic rod are located along the reciprocating movement direction of the rack in the sludge mixed solution.

7. The sludge heavy metal separation device of claim 1, wherein: The adsorption assembly further comprises a discharge cylinder which is fixedly connected to the rack and located above the half shell I and the half shell II, and the discharge cylinder is open at least at the lower end, when the half shell I and the half shell II abut against each other, the upper end of the half shell I and the half shell II is in abutment with the lower end of the discharge cylinder, so that the upper end of the cylindrical body formed by the combination of the half shell I and the half shell II is in alignment and communication with the lower end opening of the discharge cylinder.

8. The sludge heavy metal separation device of claim 1, wherein: Traction rods I and II are arranged on the rack in the horizontal direction, the half shell I is connected to the traction rod I, and the half shell II is connected to the traction rod II.

9. The sludge heavy metal separation device of claim 2, wherein: The electromagnetic rod is in a round rod structure.

10. The sludge heavy metal separation apparatus of any one of claims 1-9, wherein: The sludge heavy metal separation device further comprises a walking mechanism connected to the rack.

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