Electroplating nickel sulfate recycling device and method thereof

Abstract

The electroplating nickel sulfate recycling device comprises an exchange tower body, the top of the exchange tower body is connected with a tower top cover, the bottom of the exchange tower body is connected with a tower bottom cover, and the top of an inner cavity of the exchange tower body is provided with a material separation net plate; and the middle part of the material separating screen plate is connected with a material lifting cylinder seat which vertically extends upwards. The lifting motor drives the lifting auger arranged in the lifting barrel base, so that the lifting auger guides materials upwards from bottom to top, unsaturated chelate resin particles at the bottom of an inner cavity of the exchange tower body are guided in along the lifting inlet and conveyed upwards to the upper layer, an invalid layer of the upper layer is converted into a working layer, and meanwhile, in the circulating material guiding process, the unsaturated chelate resin particles are conveyed to the working layer through the lifting auger. The full contact between the chelating resin particles and the electroplating wastewater is improved, and the ion replacement efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electroplating solution recovery, and in particular to a device and method for recovering and reusing electroplating nickel sulfate. Background Art

[0002] When electroplating waste residue is piled up in water, the heavy metals in it can easily seep into the water and soil, seriously polluting surface water and groundwater, endangering the surrounding environment, especially chromium pollution, which can directly endanger human health. However, electroplating waste residue is a cheap secondary renewable resource, and nickel is a precious metal with a wide range of uses. Therefore, it is a very meaningful task to study nickel recovery for use in the electroplating industry and the production of batteries, coatings, dyes, feed, etc. There are many methods for the recovery and reuse of electroplating nickel sulfate, aiming to extract and purify nickel elements from electroplating wastewater to achieve the recycling of resources. The main methods include solvent extraction, ion exchange, chemical precipitation, and a combination of two methods.

[0003] The ion exchange resin recovery method is adopted, and the steps include using a specific resin to adsorb nickel ions, regeneration treatment after the resin is saturated, etc., and ion exchange equipment is required. For example, the application number CN201610390222.8 discloses a dense moving bed ion exchange elution tower. The elution tower includes an exchange tower, a resin inlet, a liquid inlet, an exhaust port, a liquid outlet device and a resin outlet. Among them, a resin inlet and a liquid inlet are provided at the top of the upper head at the upper end of the exchange tower; a resin outlet is opened in the center of the lower head at the lower end of the exchange tower, and at the same time, a number of liquid outlet devices are also provided on the lower head; a dense resin bed is provided inside the exchange tower. In actual application of this device, the upper layer of the resin bed is saturated with ion exchange absorption to form an invalid layer, and the electroplating wastewater needs to continue to permeate downward to carry out ion exchange, resulting in low ion absorption efficiency and long reaction time. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes an electroplating nickel sulfate recovery and reuse device and method to more accurately solve the above problems.

[0005] The present invention is achieved through the following technical solutions: The present invention provides a nickel sulfate electroplating recycling device, comprising an exchange tower body, wherein the top of the exchange tower body is connected to a tower top cover, the bottom of the exchange tower body is connected to a tower bottom cover, a first liquid discharge interface is provided on one side of the bottom of the tower bottom cover, a second liquid discharge interface is provided on the other side of the tower bottom cover, a waste liquid inlet is provided on the top of the tower top cover, a horizontally placed waste liquid filter cartridge seat is provided in the middle of the tower top cover, a filter screen plate is provided at the bottom of the waste liquid filter cartridge seat located in the tower top cover, a water inlet interface is provided on the top of one end of the waste liquid filter cartridge seat, a material separation screen plate for blocking chelating resin particles is provided on the top of the inner cavity of the exchange tower body, a hydrophobic plate is provided on the top of the inner cavity of the exchange tower body, and a hydrophobic plate is provided on the top of the inner cavity of the exchange tower body. The water plate is provided with evenly arranged drain holes, and a lifting barrel seat extending vertically upward is connected to the middle of the material separation mesh plate. The lifting barrel seat and the exchange tower body are coaxially arranged, and a lifting auger is arranged inside the lifting barrel seat. A lifting motor is arranged at the bottom of the tower bottom cover, and the output shaft of the lifting motor is transmission-connected to the bottom end of the lifting auger. Lifting inlets are arranged on both sides of the bottom of the lifting barrel seat, and a material mixing table is arranged on the top of the lifting barrel seat. An annular spray pipe is arranged above the material mixing table, and a plurality of nozzles arranged in a circular array are arranged at the bottom of the annular spray pipe, and an alkaline liquid connecting pipe is connected to one side of the annular spray pipe, and one end of the alkaline liquid connecting pipe extends out of the exchange tower body.

[0006] Furthermore, the first liquid discharge interface external port is connected to a first liquid valve, and the second liquid discharge interface external port is connected to a second liquid valve.

[0007] Furthermore, a slag discharge auger is provided inside the waste liquid filter cartridge seat, a slag discharge motor is provided at one end of the waste liquid filter cartridge seat, and the output shaft of the slag discharge motor is transmission-connected to one end of the slag discharge auger, and a sewage outlet is provided at the other end of the waste liquid filter cartridge seat, and the sewage outlet is connected to a sewage discharge valve.

[0008] Furthermore, a scraping rubber strip is sleeved on the outer edge of the guide blade of the slag discharge auger, and the scraping rubber strip is in contact with the inner wall of the waste liquid filter cartridge seat and the inner surface of the filter screen plate.

[0009] Furthermore, an annular support seat for connecting a hydrophobic plate is provided on the inner wall of the exchange tower body. The hydrophobic plate is rotatably connected to the top of the inner cavity of the exchange tower body. A plurality of liquid-conducting strips arranged in a circular array are provided on the upper surface of the hydrophobic plate. The liquid-conducting strips are obliquely guided arc-shaped sheets. The top of the material-lifting auger is connected to the bottom of the hydrophobic plate.

[0010] Furthermore, a bearing is provided between the bottom of the material mixing table and the top of the material lifting cylinder seat. The top of the material mixing table is a conical rotating cover. The upper surface of the material mixing table is provided with a plurality of material guide strips in a circular array. The material guide strips are obliquely guided arc-shaped strips. The upper part of the material lifting auger is connected to the material mixing table through a linkage support rod.

[0011] Furthermore, an observation window is provided on the outer wall of the exchange tower body, and a transparent tempered glass is sealed and connected to the opening of the observation window.

[0012] A method applied to the electroplating nickel sulfate recovery and reuse device comprises the following steps: Step 1: Filtration of electroplating waste liquid before adsorption: Introduce electroplating waste liquid along the waste liquid inlet, and filter the waste residue in the electroplating waste water introduced by the waste liquid inlet through the filter screen plate provided at the middle bottom of the waste liquid filter cartridge seat; Step 2: Adsorption process: The filtered electroplating wastewater drips downward evenly through the hydrophobic holes of the hydrophobic plate, and contacts with the chelate resin particles stored in the inner cavity of the exchange tower body, realizing ion replacement, thereby realizing the adsorption of nickel ions; the lifting motor drives the lifting auger provided inside the lifting cylinder seat, so that the lifting auger guides the material upward from bottom to top, so that the unsaturated chelate resin particles at the bottom of the inner cavity of the exchange tower body are introduced along the lifting inlet and transported upward to the upper layer, so that the upper invalid layer is transformed into a working layer, and at the same time, in the process of circulating material guiding, the chelate resin particles are fully contacted with the electroplating wastewater; Step 3: Water washing: Open the first liquid valve connected to the first liquid discharge interface port to discharge the electroplating wastewater inside the exchange tower body and then close it, introduce clean water along the water inlet interface, and control the driving of the slag discharge auger by the slag discharge motor, so that the scraping rubber strips sleeved on the outer edge of the guide blades of the slag discharge auger scrape off and discharge the residual electroplating waste on the waste liquid filter cartridge seat and the inner cavity wall of the filter screen plate; Clean water is introduced to drip along the hydrophobic plate, and when the lifting auger drives and rotates the hydrophobic plate and the material-splitting table, the clean water is uniformly dripped downward through the hydrophobic plate to rinse the chelate resin particles uniformly guided to the surroundings on the material-splitting table, until the electroplating wastewater on the surface of the chelate resin particles is completely rinsed; the rinsed wastewater is discharged by opening the first liquid valve connected to the outer end of the first liquid discharge interface; Step 4: Alkali washing: After the alkaline liquid supply source is connected to the alkaline liquid pipe, the alkaline liquid is uniformly sprayed downward from a plurality of nozzles at the bottom of the annular liquid spray pipe, so that the alkaline liquid is fully in contact with the chelate resin particles guiding the material on the material mixing plate, and the nickel ions adsorbed by the chelate resin particles are separated. The alkaline liquid with separated nickel ions is discharged for collection and treatment by controlling the second liquid valve connected to the outer end of the second liquid discharge interface; Step 5: Resin regeneration: Repeat the water washing in step 3, and discharge the alkaline waste liquid carrying nickel ions by opening the second liquid valve for collection and treatment. After the washing is completed, the chelating resin particles restore the exchange capacity for the next nickel ion adsorption.

[0013] Beneficial effects of the present invention: 1. The present invention filters the waste residue in the electroplating wastewater introduced by the waste liquid inlet through the filter screen plate arranged at the middle bottom of the waste liquid filter cartridge seat, thereby ensuring the purity of the introduced electroplating wastewater, and controls the driving of the slag discharge auger by the slag discharge motor, so that the scraping rubber strips sleeved on the outer edges of the guide blades of the slag discharge auger scrape and discharge the residual electroplating waste residue on the inner cavity wall of the waste liquid filter cartridge seat and the filter screen plate, thereby avoiding slag blockage and improving the filtering efficiency; 2. The present invention drives the material lifting auger provided inside the material lifting cylinder seat by means of a material lifting motor, so that the material lifting auger guides the material upward from bottom to top, so that the unsaturated chelating resin particles at the bottom of the inner cavity of the exchange tower body are introduced along the material lifting inlet and transported upward to the upper layer, so that the upper invalid layer is converted into a working layer. At the same time, in the process of circulating material guiding, the full contact between the chelating resin particles and the electroplating wastewater is improved, thereby improving the ion replacement efficiency; 3. The present invention can evenly guide and distribute the electroplating wastewater filtered by the filter screen or the introduced clean water downward when the lifting auger drives and rotates the hydrophobic plate. The chelating resin particles lifted in the lifting cylinder seat can be evenly guided and distributed around when the lifting auger drives the material mixing table, so that the chelating resin particles on the material mixing table can be fully contacted with the dripping electroplating wastewater or the introduced clean water. After the alkaline liquid pipe is connected to the alkaline liquid supply source, the alkaline liquid is evenly sprayed downward through a plurality of nozzles at the bottom of the annular liquid spray pipe, so that the alkaline liquid is fully contacted with the chelating resin particles guided on the material mixing table. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 A half-section view of the three-dimensional structure of the present invention; Figure 3 for Figure 2 The enlarged view of point A in the middle; Figure 4 Schematic diagram of the three-dimensional structure of the hydrophobic plate in the present invention; Figure 5 It is a front cross-sectional view of the structure of the present invention; Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0015] In the figure: 1. Exchange tower body; 101. Tower top cover; 1011. Waste liquid inlet; 1012. Waste liquid filter cartridge seat; 1013. Filter screen; 1014. Water inlet interface; 1015. Slag discharge auger; 1016. Slag discharge motor; 1017. Slag scraper strip; 102. Tower bottom cover; 1021. First liquid discharge interface; 1022. Second liquid discharge interface; 103. Material separation screen; 104. Lifting cylinder seat; 1041. Lifting inlet; 105. Lifting auger; 106. Observation window; 2. Drain plate; 201. Drain hole; 202. Liquid guide strip; 3. Lifting motor; 4. Material leveling table; 401. Material guide strip; 5. Annular liquid spray pipe; 501. Nozzle; 502. Alkaline liquid pipe connection. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0017] A device for recycling and reusing electroplated nickel sulfate comprises an exchange tower body 1, the inner cavity of which is filled with chelate resin particles, and nickel ions in wastewater are exchanged with sodium ions on the resin to achieve adsorption of nickel ions. The chelate resin particles have high exchange capacity, high exchange rate, easy regeneration, high mechanical strength and small expansion. Figure 2 and Figure 5 As shown, a tower top cover 101 is connected to the top of the exchange tower body 1, and a tower bottom cover 102 is connected to the bottom of the exchange tower body 1. A first liquid discharge interface 1021 is provided on one side of the bottom of the tower bottom cover 102, and a first liquid valve is connected to the outer port of the first liquid discharge interface 1021 for controlling the discharge of electroplating waste liquid. A second liquid discharge interface 1022 is provided on the other side of the tower bottom cover 102, and a second liquid valve is connected to the outer port of the second liquid discharge interface 1022 for controlling the discharge of alkaline washing liquid.

[0018] In order to avoid carrying electroplating waste residues into the electroplating wastewater entering the exchange tower body 1, a waste liquid inlet 1011 is provided on the top of the tower cover 101, and the waste liquid inlet 1011 is used to introduce electroplating wastewater. A horizontally placed waste liquid filter cartridge seat 1012 is provided in the middle of the tower cover 101. The bottom of the waste liquid filter cartridge seat 1012 located in the tower cover 101 is provided with a filter screen plate 1013, and the filter screen plate 1013 is used to filter the waste residues in the electroplating wastewater introduced by the waste liquid inlet 1011. A water inlet interface 1014 is provided on the top of one end of the waste liquid filter cartridge seat 1012, and the water inlet interface 1014 is used to introduce clean water to flush and discharge the waste residue filtered inside the waste liquid filter cartridge seat 1012.

[0019] It is worth mentioning that a slag discharge auger 1015 is provided inside the waste liquid filter cartridge seat 1012, a slag discharge motor 1016 is provided at one end of the waste liquid filter cartridge seat 1012, and the output shaft of the slag discharge motor 1016 is transmission-connected to one end of the slag discharge auger 1015, a sewage outlet is provided at the other end of the waste liquid filter cartridge seat 1012, and the sewage outlet is connected to a sewage discharge valve, and a slag scraping rubber strip 1017 is sleeved on the outer edge of the guide blade of the slag discharge auger 1015, and the slag scraping rubber strip 1017 is fitted with the inner wall of the waste liquid filter cartridge seat 1012 and the inner surface of the filter mesh plate 1013, and by controlling the driving of the slag discharge auger 1015 by the slag discharge motor 1016, the slag scraping rubber strip 1017 sleeved on the outer edge of the guide blade of the slag discharge auger 1015 can scrape off and discharge the residual electroplating waste residue on the inner cavity wall of the waste liquid filter cartridge seat 1012 and the filter mesh plate 1013.

[0020] The technical scheme in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: the present invention filters the waste residue in the electroplating wastewater introduced by the waste liquid inlet 1011 through the filter screen 1013 arranged at the middle bottom of the waste liquid filter cartridge seat 1012, so as to ensure the purity of the introduced electroplating wastewater, and controls the driving of the slag discharge auger 1015 by the slag discharge motor 1016, so that the scraping rubber strip 1017 arranged on the outer edge of the guide blade of the slag discharge auger 1015 can scrape off and discharge the residual electroplating waste residue on the inner cavity wall of the waste liquid filter cartridge seat 1012 and the filter screen 1013, so as to avoid clogging by waste residue and improve the filtering efficiency. Example 2

[0021] Combination Figure 2 and Figure 5 As shown, a material separation mesh plate 103 for blocking chelating resin particles is provided at the top of the inner cavity of the exchange tower body 1, a hydrophobic plate 2 is provided at the top of the inner cavity of the exchange tower body 1, and the hydrophobic plate 2 is provided with evenly arranged hydrophobic holes 201, a material lifting cylinder seat 104 extending vertically upward is connected to the middle of the material separation mesh plate 103, the material lifting cylinder seat 104 is coaxially arranged with the exchange tower body 1, a material lifting auger 105 is provided inside the material lifting cylinder seat 104, a material lifting motor 3 is provided at the bottom of the tower bottom cover 102, and the output shaft of the material lifting motor 3 is transmission-connected to the bottom end of the material lifting auger 105, and material lifting inlets 1041 are provided on both sides of the bottom of the material lifting cylinder seat 104. The lifting motor 3 drives the lifting auger 105 disposed inside the lifting cylinder seat 104, so that the lifting auger 105 guides the material upward from bottom to top, so that the unsaturated chelating resin particles at the bottom of the inner cavity of the exchange tower body 1 are introduced along the lifting inlet 1041 and transported upward to the upper layer, so that the upper invalid layer is converted into a working layer.

[0022] The technical solution in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: the present invention drives the lifting auger 105 provided inside the lifting cylinder seat 104 through the lifting motor 3, so that the lifting auger 105 guides the material upward from bottom to top, so that the unsaturated chelating resin particles at the bottom of the inner cavity of the exchange tower body 1 are introduced along the lifting inlet 1041 and transported upward to the upper layer, so that the upper invalid layer is transformed into a working layer. At the same time, in the process of circulating material guiding, the chelating resin particles are fully contacted with the electroplating wastewater, thereby improving the ion replacement efficiency. Example 3

[0023] Combination Figure 2 and Figure 4 As shown, the inner wall of the exchange tower body 1 is provided with an annular support seat for connecting the hydrophobic plate 2, the hydrophobic plate 2 is rotatably connected to the top of the inner cavity of the exchange tower body 1, and the upper surface of the hydrophobic plate 2 is provided with a plurality of liquid-guiding strips 202 arranged in an annular array, the liquid-guiding strips 202 are obliquely guided arc-shaped sheets, and the top of the material-lifting auger 105 is connected to the bottom of the hydrophobic plate 2. When the material-lifting auger 105 drives and rotates the hydrophobic plate 2, the electroplating wastewater filtered by the filter screen plate 1013 or the introduced clean water can be evenly guided downward for distribution.

[0024] Combination Figure 2 and Figure 3 As shown, a material mixing plate 4 is provided on the top of the material lifting cylinder seat 104, a bearing is provided between the bottom of the material mixing plate 4 and the top of the material lifting cylinder seat 104, the top of the material mixing plate 4 is a conical rotating cover, a plurality of guide strips 401 in a circular array are provided on the upper surface of the material mixing plate 4, the guide strips 401 are obliquely guided arc-shaped sheets, and the upper part of the material lifting auger 105 is connected to the material mixing plate 4 through a linkage support rod. Under the driving of the material mixing plate 4 by the material lifting auger 105, the chelated resin particles lifted in the material lifting cylinder seat 104 can be uniformly guided to the surroundings.

[0025] like Figure 5 As shown, an annular liquid spray pipe 5 is provided above the material mixing table 4, and a plurality of nozzles 501 arranged in an annular array are provided at the bottom of the annular liquid spray pipe 5. An alkaline liquid pipe 502 is connected to one side of the annular liquid spray pipe 5. One end of the alkaline liquid pipe 502 extends outside the exchange tower body 1. The alkaline liquid pipe 502 is used to connect to an external alkaline liquid supply source. The alkaline liquid is uniformly sprayed downward through the plurality of nozzles 501 at the bottom of the annular liquid spray pipe 5, so that the alkaline liquid is fully in contact with the chelating resin particles guided on the material mixing table 4, as shown in FIG. Figure 1 As shown, an observation window 106 is provided on the outer wall of the exchange tower body 1 , and a transparent tempered glass is sealed at the opening of the observation window 106 for observing the reaction inside the exchange tower body 1 .

[0026] The technical scheme in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: when the lifting auger 105 drives and rotates the hydrophobic plate 2, the electroplating wastewater filtered by the filter plate 1013 or the introduced clean water can be uniformly guided downward and distributed; when the lifting auger 105 drives the material leveling table 4, the chelating resin particles lifted inside the lifting cylinder seat 104 can be uniformly guided to the surroundings, so that the material leveling table 4 can be fully in contact with the dripping electroplating wastewater or the introduced clean water; after the alkaline liquid pipe 502 is connected to the alkaline liquid supply source, the alkaline liquid is uniformly sprayed downward through the plurality of nozzles 501 at the bottom of the annular liquid spray pipe 5, so that the alkaline liquid is fully in contact with the chelating resin particles guided on the material leveling table 4.

[0027] A method for recycling nickel sulfate electroplating equipment, comprising the following steps: Step 1: Filtration of electroplating waste liquid before adsorption: electroplating waste liquid is introduced along the waste liquid inlet 1011, and waste residues in the electroplating waste water introduced by the waste liquid inlet 1011 are filtered through the filter screen plate 1013 provided at the middle bottom of the waste liquid filter cartridge seat 1012; Step 2: Adsorption process: The filtered electroplating wastewater drips downward uniformly through the hydrophobic holes 201 of the hydrophobic plate 2, contacts with the chelate resin particles stored in the inner cavity of the exchange tower body 1, realizes ion replacement, and thus realizes the adsorption of nickel ions; the lifting motor 3 drives the lifting auger 105 provided inside the lifting cylinder seat 104, so that the lifting auger 105 guides the material upward from bottom to top, so that the unsaturated chelate resin particles at the bottom of the inner cavity of the exchange tower body 1 are introduced along the lifting inlet 1041 and transported upward to the upper layer, so that the upper invalid layer is converted into a working layer, and at the same time, in the process of circulating material guiding, the full contact between the chelate resin particles and the electroplating wastewater is improved; Step 3: Water washing: Open the first liquid valve connected to the first liquid discharge interface 1021 to discharge the electroplating wastewater inside the exchange tower body 1 and then close it, introduce clean water along the water inlet interface 1014, and control the driving of the slag discharge auger 1015 by the slag discharge motor 1016, so that the scraping rubber strip 1017 set on the outer edge of the guide blade of the slag discharge auger 1015 can scrape and discharge the residual electroplating waste on the inner wall of the waste liquid filter cartridge seat 1012 and the filter screen plate 1013; Clean water is introduced to drip along the hydrophobic plate 2, and under the driving rotation of the material lifting auger 105 on the hydrophobic plate 2 and the material leveling plate 4, the clean water is made to drip downward evenly through the hydrophobic plate 2, and the chelate resin particles uniformly guided to the surroundings on the material leveling plate 4 are rinsed until the electroplating wastewater on the surface of the chelate resin particles is completely rinsed; the rinsed wastewater is discharged by opening the first liquid valve connected to the outer end of the first liquid discharge interface 1021; Step 4: alkali washing: after the alkaline liquid supply source is externally connected to the alkaline liquid pipe 502, the alkaline liquid is uniformly sprayed downward from a plurality of nozzles 501 at the bottom of the annular liquid spray pipe 5, so that the alkaline liquid is fully contacted with the chelate resin particles of the material guide on the material leveling plate 4, and the nickel ions adsorbed by the chelate resin particles are separated, and the alkaline liquid separated from the nickel ions is discharged and collected for processing by controlling the second liquid valve connected to the outer end of the second liquid discharge interface 1022; Step 5: Resin regeneration: Repeat the water washing in step 3, and discharge the alkaline waste liquid carrying nickel ions by opening the second liquid valve for collection and treatment. After the washing is completed, the chelating resin particles restore the exchange capacity for the next nickel ion adsorption.

[0028] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. A device for recycling and reusing nickel sulfate from electroplating, comprising an exchange tower body (1), characterized in that: The top of the exchange tower body (1) is connected to a tower top cover (101), the bottom of the exchange tower body (1) is connected to a tower bottom cover (102), a first liquid discharge interface (1021) is provided on one side of the bottom of the tower bottom cover (102), a second liquid discharge interface (1022) is provided on the other side of the tower bottom cover (102), a waste liquid inlet (1011) is provided on the top of the tower top cover (101), a horizontally placed waste liquid filter cartridge seat (1012) is provided in the middle of the tower top cover (101), a filter screen plate (1013) is provided at the bottom of the waste liquid filter cartridge seat (1012) located in the tower top cover (101), a water inlet interface (1014) is provided on the top of one end of the waste liquid filter cartridge seat (1012), a material separation screen plate (103) for blocking chelating resin particles is provided on the top of the inner cavity of the exchange tower body (1), a hydrophobic plate (2) is provided on the hydrophobic plate (2), and uniformly arranged The drain hole (201) is provided on the bottom of the tower bottom cover (102), and the output shaft of the material lifting motor (3) is drivingly connected to the bottom end of the material lifting auger (105). The material lifting barrel seat (104) is coaxially arranged with the exchange tower body (1). The material lifting barrel seat (104) is provided with a material lifting auger (105) inside. The bottom of the tower bottom cover (102) is provided with a material lifting motor (3), and the output shaft of the material lifting motor (3) is drivingly connected to the bottom end of the material lifting auger (105). 4) are provided with material lifting inlets (1041) on both sides of the bottom, a material mixing table (4) is provided on the top of the material lifting cylinder seat (104), an annular liquid spraying pipe (5) is provided above the material mixing table (4), a plurality of nozzles (501) arranged in a circular array are provided at the bottom of the annular liquid spraying pipe (5), an alkaline liquid pipe (502) is connected to one side of the annular liquid spraying pipe (5), and one end of the alkaline liquid pipe (502) extends outside the exchange tower body (1).

2. A nickel sulfate electroplating recycling device according to claim 1, characterized in that: The outer port of the first liquid discharge interface (1021) is connected to a first liquid valve, and the outer port of the second liquid discharge interface (1022) is connected to a second liquid valve.

3. A nickel sulfate electroplating recycling device according to claim 1, characterized in that: A slag discharge auger (1015) is provided inside the waste liquid filter cartridge seat (1012); a slag discharge motor (1016) is provided at one end of the waste liquid filter cartridge seat (1012); an output shaft of the slag discharge motor (1016) is drivingly connected to one end of the slag discharge auger (1015); a sewage discharge port is provided at the other end of the waste liquid filter cartridge seat (1012); and the sewage discharge port is connected to a sewage discharge valve.

4. A nickel sulfate electroplating recycling device according to claim 3, characterized in that: The outer edge of the guide blade of the slag discharge auger (1015) is sleeved with a slag scraping rubber strip (1017), and the slag scraping rubber strip (1017) is in contact with the inner wall of the waste liquid filter cartridge seat (1012) and the inner surface of the filter screen plate (1013).

5. A nickel sulfate electroplating recycling device according to claim 1, characterized in that: The inner wall of the exchange tower body (1) is provided with an annular support seat for connecting the hydrophobic plate (2); the hydrophobic plate (2) is rotatably connected to the top of the inner cavity of the exchange tower body (1); the upper surface of the hydrophobic plate (2) is provided with a plurality of liquid-conducting strips (202) arranged in a circular array; the liquid-conducting strips (202) are obliquely guided arc-shaped strips; and the top end of the material-lifting auger (105) is connected to the bottom end of the hydrophobic plate (2).

6. The electroplating nickel sulfate recovery and recycling device according to claim 1, characterized in that: A bearing is provided between the bottom of the material mixing table (4) and the top of the material lifting cylinder seat (104); the top of the material mixing table (4) is a conical rotating cover; the upper surface of the material mixing table (4) is provided with a plurality of material guide strips (401) in a circular array; the material guide strips (401) are obliquely guided arc-shaped strips; the upper part of the material lifting auger (105) is connected to the material mixing table (4) via a linkage support rod.

7. The electroplating nickel sulfate recovery and recycling device according to claim 1, characterized in that: An observation window (106) is provided on the outer wall of the exchange tower body (1), and a transparent tempered glass is sealed and connected to the opening of the observation window (106).

8. A method for recycling nickel sulfate electroplating according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Filtration of electroplating waste liquid before adsorption: electroplating waste liquid is introduced along the waste liquid inlet (1011), and waste residue in the electroplating waste water introduced through the waste liquid inlet (1011) is filtered through the filter screen plate (1013) provided at the middle bottom of the waste liquid filter cartridge seat (1012); Step 2: Adsorption process: the filtered electroplating wastewater drips downward uniformly through the hydrophobic holes (201) of the hydrophobic plate (2), and contacts with the chelate resin particles stored in the inner cavity of the exchange tower body (1), thereby achieving ion replacement and adsorption of nickel ions; the material lifting auger (105) provided inside the material lifting cylinder seat (104) is driven by the material lifting motor (3), so that the material lifting auger (105) guides the material upward from bottom to top, so that the unsaturated chelate resin particles at the bottom of the inner cavity of the exchange tower body (1) are introduced along the material lifting inlet (1041) and transported upward to the upper layer, so that the upper invalid layer is converted into a working layer, and at the same time, in the process of circulating material guiding, the chelate resin particles are fully contacted with the electroplating wastewater; Step 3: Water washing: the first liquid valve connected to the first liquid discharge interface (1021) is opened to discharge the electroplating wastewater inside the exchange tower body (1) and then closed, clean water is introduced along the water inlet interface (1014), and the slag discharge motor (1016) is controlled to drive the slag discharge auger (1015), so that the scraping rubber strip (1017) sleeved on the outer edge of the guide blade of the slag discharge auger (1015) scrapes off and discharges the electroplating waste residue remaining on the inner cavity wall of the waste liquid filter cartridge seat (1012) and the filter screen plate (1013); Clean water is introduced to drip along the hydrophobic plate (2), and when the lifting auger (105) drives the hydrophobic plate (2) and the material leveling plate (4) to rotate, the clean water is made to drip evenly downward through the hydrophobic plate (2), and the chelate resin particles on the material leveling plate (4) are evenly guided to the surroundings, until the electroplating wastewater on the surface of the chelate resin particles is completely washed; the washed wastewater is discharged by opening the first liquid valve connected to the outer end of the first liquid discharge interface (1021); Step 4: Alkali washing: After the alkaline liquid supply source is connected to the alkaline liquid pipe (502), the alkaline liquid is uniformly sprayed downward from a plurality of nozzles (501) at the bottom of the annular liquid spray pipe (5), so that the alkaline liquid is fully in contact with the chelate resin particles guided on the material mixing table (4), and the nickel ions adsorbed by the chelate resin particles are separated. The alkaline liquid with separated nickel ions is discharged for collection and treatment by controlling the second liquid valve connected to the outer end of the second liquid discharge interface (1022); Step 5: Resin regeneration: Repeat the water washing in step 3, and discharge the alkaline waste liquid carrying nickel ions by opening the second liquid valve for collection and treatment. After the washing is completed, the chelating resin particles restore the exchange capacity for the next nickel ion adsorption.

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