A device and method for recovering valuable metals from electroplating sludge

Abstract

The invention discloses a device and method for recovering valuable metals in electroplating sludge, comprising a disc tube and a dehydration disc, wherein the dehydration disc is installed inside the disc tube, a fan-shaped groove is provided on the upper side of the dehydration disc, filter plates are installed on both sides of the fan-shaped groove wall of the dehydration disc, a plurality of filter holes are provided on the filter plate, a bottom hole is provided at the bottom end of the dehydration disc, and a first motor is fixedly connected to the middle part of the outer wall of one side of the disc tube through a fixed seat. The beneficial effects of the invention include: by arranging a compacting mechanism, the extrusion plate of the compacting mechanism is repeatedly rotated to extrude the metal precipitate, so that the water in the metal precipitate can be squeezed out; by arranging a pushing mechanism, the moving plate of the pushing mechanism is moved toward the outside of the recovery pipe, so that the metal solid precipitate can be conveniently brought out of the recovery pipe; by arranging a gear and an L-shaped rod, the gear is rotated back and forth at a small angle, so that the L-shaped rod drives the moving plate to move back and forth a short distance, which generates vibration to drive the metal solid precipitate to fall for recovery.

Description

Technical Field

[0001] The present invention relates to the technical field related to equipment for recovering metals in electroplating sludge, and in particular to a device and method for recovering valuable metals in electroplating sludge. Background Art

[0002] Electroplating sludge is the precipitate formed during the treatment of electroplating wastewater. Valuable metals refer to metals with recycling value. Electroplating sludge contains relatively high levels of heavy metals. When recovering the valuable metals in electroplating sludge, the valuable metal components inside are generally precipitated, dehydrated and then recycled.

[0003] Under the existing technology, when valuable metal precipitates are recovered, a centrifuge is generally used to dehydrate the metal precipitates. However, when the valuable metal precipitates are recovered after dehydration in this way, the loose valuable metal precipitates will cause inconvenience in recovery. Summary of the invention

[0004] The object of the present invention is to provide a device and method for recovering valuable metals in electroplating sludge, so as to solve the problem raised in the above-mentioned background technology that when recovering valuable metal precipitates, a centrifuge is generally used to dehydrate the metal precipitates first, but when this method is used to recover after dehydration, the valuable metal precipitates become loose, which may cause inconvenience in recovery.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for recovering valuable metals in electroplating sludge, comprising a disc tube and a dehydration tray, the dehydration tray being installed inside the disc tube, a fan-shaped groove being provided on the upper side of the dehydration tray, filter plates being installed on both sides of the fan-shaped groove wall of the dehydration tray, a plurality of filter holes being provided on the filter plate, a bottom hole being provided at the bottom end of the dehydration tray, a first motor being fixedly connected to the middle part of the outer wall of one side of the disc tube through a fixing seat, an output end of the first motor passing through the disc tube and being fixedly connected to the middle part of the outer wall of the dehydration tray, a compacting mechanism being provided in the fan-shaped groove of the dehydration tray, a recovery pipe being fixedly connected to the middle part of one side of the disc tube, the recovery pipe being connected to the inside of the disc tube, and a pushing mechanism being provided at the lower side of the recovery pipe.

[0006] In a further embodiment, the compacting mechanism includes a fixed shell, which is welded to the outer wall of the dehydration tray, and a second motor is fixedly connected to the inner wall of the fixed shell, the output shaft of the second motor passes through the dehydration tray, the output shaft of the second motor is rotatably connected to the inner wall of the dehydration tray, and a sleeve is fixedly connected to the part of the surface of the output shaft of the second motor located inside the dehydration tray, a top hole is opened in the middle of the top of the dehydration tray, the surface of the sleeve fits the lower end of the top hole, and an extrusion plate is welded on the upper end surface of the sleeve, and the extrusion plate passes through the top hole and extends into the fan-shaped groove of the dehydration tray.

[0007] In a further embodiment, the ejection mechanism includes a movable plate, the width of the movable plate is the same as the width of the recovery pipe, the end of the movable plate away from the dehydration tray extends to the outside of the recovery pipe, the lower side of the end of the movable plate located outside the recovery pipe is fixedly connected with an L-shaped rod, the upper side of the long rod of the L-shaped rod is provided with tooth marks, the lower surface of the recovery pipe is fixedly connected with a fixed block, one side of the fixed block is fixedly connected with a third motor through a fixed seat, the output end of the third motor passes through the fixed block and is fixedly connected with a gear, and the gear is meshed with the tooth marks on the upper side of the long rod of the L-shaped rod.

[0008] In a further embodiment, the outer wall of the dehydration tray is fitted with the inner wall of the circular coil tube, the length and width of the extrusion plate are the same as the fan-shaped groove wall of the dehydration tray, the interior of the dehydration tray is a hollow structure, and a sealing gasket is provided at the fitting position of the sleeve and the lower end of the top hole.

[0009] In a further embodiment, an inner groove is opened in the middle of the lower side of the recovery pipe, a slider is slidably connected in the inner groove, and the slider is fixedly connected to the lower surface of one end of the moving plate close to the dehydration tray.

[0010] In a further embodiment, the upper end of the circular coil is connected to a feed pipe via a connecting flange, and the lower end of the circular coil is connected to a drain pipe via a connecting flange. The diameter of the drain pipe is greater than the length of the bottom hole, and the length between the two top points of the fan-shaped groove of the dehydration tray is greater than the diameter of the feed pipe.

[0011] In a further embodiment, side blocks are fixedly connected at both ends of the surface of the side of the dehydration disk away from the first motor, an annular groove is opened on the inner wall of the circular tube relative to the side block, and the side blocks are slidably connected in the annular groove, and a slot is opened on the inner wall of the circular tube relative to the fixed shell, and the fixed shell is rotatably connected to the slot on the inner wall of the circular tube.

[0012] Preferably, the above-mentioned method for recovering valuable metals from electroplating sludge is used, and the specific steps are as follows:

[0013] T1. First, use the delivery pump to pass the metal precipitate into the fan-shaped groove of the dehydration tray. When a certain amount of metal precipitate is passed in, stop discharging the metal precipitate, and then open the compaction mechanism to squeeze out the water in the metal precipitate;

[0014] T2. The waste water squeezed out of the metal precipitate enters the cavity of the dehydration tray through the filter holes of the filter plates on both sides of the dehydration tray, and then is discharged from the bottom hole of the dehydration tray;

[0015] T3. After repeated squeezing, the water in the metal precipitate forms a metal solid precipitate. Turn on the first motor to drive the dehydration disk to rotate. When the lower side of the fan-shaped groove of the dehydration disk rotates to the lower side relative to the recovery pipe, the metal solid precipitate can be discharged. Open the push-out mechanism in the recovery pipe to bring the solid precipitate out of the recovery pipe for recycling, which is convenient and simple.

[0016] Compared with the prior art, the beneficial effects of the present invention include:

[0017] 1. By setting up a compacting mechanism, the extrusion plate of the compacting mechanism repeatedly rotates and squeezes the metal precipitate, so that the water in the metal precipitate can be squeezed out. This structure is simple and the repeated extrusion and dehydration effect is good.

[0018] 2. By setting up a push-out mechanism, the moving plate of the push-out mechanism moves toward the outside of the recovery pipe, so that the metal solid precipitate can be easily taken out of the recovery pipe for recovery.

[0019] 3. By setting gears and L-shaped rods, the gears rotate back and forth at a small angle, so that the L-shaped rod drives the moving plate to move back and forth a short distance, which will generate vibrations to drive the metal solid precipitate to fall to the next processing procedure for processing. This micro-vibration method drives the metal solid precipitate to be discharged, which is convenient and simple.

[0020] 4. By setting the slider and the inner groove, the slider is restricted to slide in the inner groove, which can limit the moving distance of the moving plate connected to the slider and prevent the moving plate from escaping from the recovery pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main cutaway structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the dehydration tray of the present invention;

[0023] Figure 3 It is a schematic diagram of the internal structure of the recovery pipe of the present invention;

[0024] Figure 4 It is a schematic diagram of the top view of the connection between the dehydration tray and the second motor of the present invention;

[0025] Figure 5 It is a side view structural schematic diagram of the gear connection of the present invention;

[0026] Figure 6 It is a schematic diagram of the top view of the cross-section structure of the sleeve connection of the present invention.

[0027] In the figure: 1. disc tube; 2. dehydration plate; 3. filter plate; 4. bottom hole; 5. first motor; 6. compaction mechanism; 61. fixed shell; 62. second motor; 63. sleeve; 64. extrusion plate; 65. top hole; 7. recovery pipe; 8. ejection mechanism; 81. moving plate; 82. L-shaped rod; 83. fixed block; 84. third motor; 85. gear; 9. inner groove; 10. slider; 11. annular groove; 12. side block; 13. feed pipe; 14. drain pipe. DETAILED DESCRIPTION

[0028] In order to increase the convenience of recovering valuable metal precipitates, a device and method for recovering valuable metals in electroplating sludge are proposed. The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment 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. Example

[0029] See also Figure 1-6 The present embodiment provides a valuable metal recovery device and method in electroplating sludge, comprising a circular tube 1 and a dehydration tray 2, the dehydration tray 2 is installed inside the circular tube 1, a fan-shaped groove is provided on the upper side of the dehydration tray 2, filter plates 3 are installed on both sides of the fan-shaped groove wall of the dehydration tray 2, a plurality of filter holes are provided on the filter plate 3, a bottom hole 4 is provided at the bottom end of the dehydration tray 2, and valuable metal precipitation falls into the fan-shaped groove of the dehydration tray 2 after being fed from the feed pipe 13, a part of the water in the metal precipitation enters the cavity of the dehydration tray 2 through the filter holes of the filter plates 3 on both sides, and is discharged from the bottom hole 4, the structure is simple, and waste discharge is convenient, a first motor is fixedly connected to the middle part of the outer wall of one side of the circular tube 1 through a fixing seat 5. The output end of the first motor 5 passes through the disc tube 1 and is fixedly connected to the middle part of the outer wall of the dehydration disc 2. When the first motor 5 is turned on to drive the dehydration disc 2 to rotate, the metal precipitate can be discharged when the lower side of the fan-shaped groove of the dehydration disc 2 rotates to the lower side relative to the recovery pipe 7. It is very convenient. A compacting mechanism 6 is arranged in the fan-shaped groove of the dehydration disc 2. The middle part of one side of the disc tube 1 is fixedly connected with the recovery pipe 7. The extrusion plate 64 of the compacting mechanism 6 repeatedly rotates to squeeze the metal precipitate, so that the water in the precipitate can be squeezed out. The recovery pipe 7 is connected to the inside of the disc tube 1. The lower side of the recovery pipe 7 is provided with a pushing mechanism 8, and the compacted metal precipitate can be brought out of the recovery pipe 7 through the pushing mechanism 8.

[0030] The upper end of the disc tube 1 is connected to a feed pipe 13 through a connecting flange, and the lower end of the disc tube 1 is connected to a drain pipe 14 through a connecting flange. The diameter of the drain pipe 14 is greater than the length of the bottom hole 4, and the length between the two points at the top of the fan-shaped groove of the dehydration disk 2 is greater than the diameter of the feed pipe 13. After the metal precipitate is introduced through the feed pipe 13, the waste water after pressure filtration can be discharged from the drain pipe 14.

[0031] The dehydration tray 2 has side blocks 12 fixedly connected at both ends of the surface of one side away from the first motor 5. An annular groove 11 is provided on the inner wall of the circular tube 1 relative to the side block 12. The side blocks 12 are slidably connected in the annular groove 11. A slot is provided on the inner wall of the circular tube 1 relative to the fixed shell 61. The fixed shell 61 is rotatably connected in the slot of the inner wall of the circular tube 1. The side blocks 12 of the dehydration tray 2 slide in the annular groove 11, which can increase the stability of the dehydration tray 2.

[0032] The compacting mechanism 6 includes a fixed shell 61, which is welded to the outer wall of the dehydration tray 2. A second motor 62 is fixedly connected to the inner wall of the fixed shell 61. The output shaft of the second motor 62 passes through the dehydration tray 2. The output shaft of the second motor 62 is rotatably connected to the inner wall of the dehydration tray 2. A sleeve 63 is fixedly connected to the surface of the output shaft of the second motor 62 located inside the dehydration tray 2. A top hole 65 is opened in the middle of the top of the dehydration tray 2. The surface of the sleeve 63 fits the lower end of the top hole 65. An extrusion plate 64 is welded to the upper end surface of the sleeve 63. The extrusion plate 64 passes through the top hole 65 and extends into the fan-shaped groove of the dehydration tray 2. The second motor 62 of the compacting mechanism 6 is opened to drive the sleeve 63 to rotate, so that the extrusion plate 64 on the surface of the sleeve 63 rotates. The metal precipitate is squeezed by the repeated rotation of the extrusion plate 64, so that the moisture in the metal precipitate can be squeezed out. This structure is simple and has good repeated extrusion and dehydration effects.

[0033] After squeezing out the wastewater in the sediment, the compacted solid sediment can be pushed out by the pushing mechanism 8, which includes a moving plate 81. The width of the moving plate 81 is the same as the width of the recovery pipe 7. The end of the moving plate 81 away from the dehydration tray 2 extends to the outside of the recovery pipe 7. The lower side of the end of the moving plate 81 located outside the recovery pipe 7 is fixedly connected with an L-shaped rod 82, and the upper side of the long rod of the L-shaped rod 82 is chiseled with a tooth mark. The lower surface of the recovery pipe 7 is fixedly connected with a fixed block 83, and one side of the fixed block 83 is fixedly connected with a third motor 84 through a fixed seat. The output end of the third motor 84 passes through the fixed block 83 and is fixedly connected with a gear 85. The gear 85 is meshed and connected with the tooth mark on the upper side of the long rod of the L-shaped rod 82. The third motor 84 of the pushing mechanism 8 is opened to drive the gear 85 to rotate , so that the long rod of the L-shaped rod 82 moves and drives the moving plate 81 to move toward the outside of the recovery pipe 7, which is convenient for taking the solid metal precipitate out of the recovery pipe 7. The third motor 84 drives the gear 85 to rotate back and forth at a small angle, so that the L-shaped rod 82 drives the moving plate 81 to move back and forth a short distance, which will generate vibration to drive the solid metal precipitate to fall from the recovery pipe 7, which is convenient for recovery. This kind of micro-vibration method drives the discharge, and the solid valuable metal precipitate is not easy to break. An inner groove 9 is opened in the middle of the lower side of the recovery pipe 7, and a slider 10 is slidably connected in the inner groove 9. The slider 10 is fixedly connected to the lower surface of one end of the moving plate 81 close to the dehydration tray 2. The slider 10 is restricted to slide in the inner groove 9, which can limit the moving distance of the moving plate 81 connected to the slider 10, and prevent the moving plate 81 from falling out of the recovery pipe 7.

[0034] The outer wall of the dehydration tray 2 fits with the inner wall of the circular coil tube 1 to prevent metal precipitates from being squeezed out from the gap between the dehydration tray 2 and the circular coil tube 1. The length and width of the extrusion plate 64 are the same as the fan-shaped groove wall of the dehydration tray 2. The interior of the dehydration tray 2 is a hollow structure. A sealing gasket is provided at the fitting position of the lower end of the sleeve 63 and the top hole 65 to prevent waste water and metal precipitates from leaking out from the connection between the sleeve 63 and the top hole 65.

[0035] When in use, first use the delivery pump to pass the metal precipitate into the feed pipe 13, and the metal precipitate falls from the feed pipe 13 into the fan-shaped groove of the dehydration tray 2. When a certain amount of metal precipitate is passed in, the discharge of the metal precipitate is stopped, and then the second motor 62 of the compacting mechanism 6 is turned on to drive the sleeve 63 to rotate, so that the extrusion plate 64 on the surface of the sleeve 63 rotates. The metal precipitate is squeezed by repeated extrusion and rotation of the extrusion plate 64, so that the water in the metal precipitate is squeezed out, and the wastewater enters the cavity of the dehydration tray 2 through the filter holes of the filter plates 3 on both sides, and then is discharged from the bottom hole 4 of the dehydration tray 2, and the liquid is discharged from the drain pipe 14 for subsequent treatment. At this time, the metal precipitate is pressed into a solid metal precipitate. When the solid precipitate needs to be discharged, the first motor 5 is turned on to drive the dehydration tray 2 to rotate. When the dehydration tray 2 After the lower side of the fan-shaped groove rotates to the lower side relative to the recovery pipe 7, the first motor 5 is turned off and the dehydration tray 2 stops rotating. The solid precipitate will slide along the inclined fan-shaped groove wall to the movable plate 81 in the recovery pipe 7 under the action of gravity and the vibration caused by the sudden stop of the dehydration tray 2. At the same time, the third motor 84 of the ejection mechanism 8 in the recovery pipe 7 is turned on to drive the gear 85 to rotate, so that the long rod of the L-shaped rod 82 moves to drive the movable plate 81 to move toward the outside of the recovery pipe 7, which is convenient for taking the solid precipitate out of the recovery pipe 7. The third motor 84 then drives the gear 85 to rotate back and forth at a small angle, so that the L-shaped rod 82 drives the movable plate 81 to move back and forth a short distance, which will generate vibration to drive the solid precipitate to fall to the next processing procedure for processing. This micro-vibration method drives the solid precipitate to be discharged, which is convenient and fast.

[0036] 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 device for recovering valuable metals from electroplating sludge, comprising a circular coil (1) and a dewatering tray (2), characterized in that: The dehydration tray (2) is installed inside the circular tube (1); a fan-shaped groove is provided on the upper side of the dehydration tray (2); filter plates (3) are installed on both sides of the fan-shaped groove wall of the dehydration tray (2); the filter plates (3) are provided with a plurality of filter holes; a bottom hole (4) is provided at the bottom end of the dehydration tray (2); a first motor (5) is fixedly connected to the middle of the outer wall of one side of the circular tube (1) through a fixing seat; the output end of the first motor (5) passes through the circular tube (1) and is fixedly connected to the middle of the outer wall of the dehydration tray (2); a compacting mechanism (6) is provided in the fan-shaped groove of the dehydration tray (2); a recovery pipe (7) is fixedly connected to the middle of one side of the circular tube (1); the recovery pipe (7) is communicated with the inside of the circular tube (1); and a pushing mechanism is provided at the bottom of the recovery pipe (7). (8), the compacting mechanism (6) comprises a fixed shell (61), the fixed shell (61) is welded to the outer wall of the dehydration tray (2), the inner wall of the fixed shell (61) is fixedly connected to a second motor (62), the output shaft of the second motor (62) passes through the dehydration tray (2), the output shaft of the second motor (62) is rotatably connected to the inner wall of the dehydration tray (2), a sleeve (63) is fixedly connected to a portion of the surface of the output shaft of the second motor (62) located inside the dehydration tray (2), a top hole (65) is opened in the middle of the top of the dehydration tray (2), the surface of the sleeve (63) fits the lower end of the top hole (65), and an extrusion plate (64) is welded to the upper end surface of the sleeve (63), the extrusion plate (64) passes through the top hole (65) and extends into the fan-shaped groove of the dehydration tray (2).

2. The device for recovering valuable metals from electroplating sludge according to claim 1, characterized in that: The ejection mechanism (8) comprises a moving plate (81), the width of the moving plate (81) being the same as the width of the recovery pipe (7), one end of the moving plate (81) being away from the dehydration tray (2) extending to the outside of the recovery pipe (7), an L-shaped rod (82) being fixedly connected to the lower side of one end of the moving plate (81) located outside the recovery pipe (7), a tooth mark being cut on the upper side of the long rod of the L-shaped rod (82), a fixed block (83) being fixedly connected to the lower surface of the recovery pipe (7), one side of the fixed block (83) being fixedly connected to a third motor (84) via a fixed seat, an output end of the third motor (84) passing through the fixed block (83) and being fixedly connected to a gear (85), the gear (85) being meshedly connected to the tooth mark on the upper side of the long rod of the L-shaped rod (82).

3. The device for recovering valuable metals from electroplating sludge according to claim 1, characterized in that: The outer wall of the dehydration tray (2) is fitted with the inner wall of the circular tube (1); the length and width of the extrusion plate (64) are the same as the fan-shaped groove wall of the dehydration tray (2); the interior of the dehydration tray (2) is a hollow structure; a sealing gasket is provided at the fitting position of the sleeve (63) and the lower end of the top hole (65).

4. The device for recovering valuable metals from electroplating sludge according to claim 1, characterized in that: An inner groove (9) is provided in the middle of the lower side of the recovery pipe (7), a sliding block (10) is slidably connected in the inner groove (9), and the sliding block (10) is fixedly connected to the lower surface of one end of the moving plate (81) close to the dehydration tray (2).

5. The device for recovering valuable metals from electroplating sludge according to claim 1, characterized in that: The upper end of the circular tube (1) is connected to a feed pipe (13) via a connecting flange, and the lower end of the circular tube (1) is connected to a drain pipe (14) via a connecting flange. The diameter of the drain pipe (14) is greater than the length of the bottom hole (4), and the length between two points at the top of the fan-shaped groove of the dehydration tray (2) is greater than the diameter of the feed pipe (13).

6. The device for recovering valuable metals from electroplating sludge according to claim 2, characterized in that: The two ends of the surface of the side of the dehydration tray (2) away from the first motor (5) are fixedly connected with side blocks (12); the inner wall of the circular tube (1) is provided with an annular groove (11) relative to the side block (12); the side blocks (12) are slidably connected in the annular groove (11); the inner wall of the circular tube (1) is provided with a slot relative to the fixed shell (61); the fixed shell (61) is rotatably connected in the slot of the inner wall of the circular tube (1).

7. A method for recovering valuable metals from electroplating sludge using the device for recovering valuable metals from electroplating sludge according to claim 1, characterized in that: The steps include: T1. First, use a delivery pump to pass the metal precipitate into the fan-shaped groove of the dehydration tray (2). When a certain amount of metal precipitate is passed in, stop discharging the metal precipitate, and then open the compacting mechanism (6) to squeeze out the water in the metal precipitate; T2, the waste water squeezed out of the metal precipitate enters the cavity of the dehydration tray (2) through the filter holes of the filter plates (3) on both sides of the dehydration tray (2), and then is discharged from the bottom hole (4) of the dehydration tray (2); T3. After the water in the metal precipitate is repeatedly squeezed, a metal solid precipitate is formed. The first motor (5) is turned on to drive the dehydration tray (2) to rotate. When the lower side of the fan-shaped groove of the dehydration tray (2) rotates to the lower side relative to the recovery pipe (7), the metal solid precipitate can be discharged. The ejection mechanism (8) in the recovery pipe (7) is opened to bring the solid precipitate out of the recovery pipe (7) for recovery, which is convenient and simple.

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