Rotary powder electroplating or electrolysis impurity removal device

Abstract

The utility model discloses a rotary powder electroplating or electrolysis impurity removal device, which relates to the technical field of electrochemistry and comprises a first electrode chamber, a second electrode chamber and an isolating membrane for separating the first electrode chamber and the second electrode chamber. The electric brush structure is fixedly mounted above the opening part of the first electrode chamber and provides a degree of freedom for the stirring paddle to rotate around a common axis of the first electrode chamber and the second electrode chamber under the driving of the driver; the movable electrode is arranged in the second electrode chamber and immersed below the liquid level in the second electrode chamber, and the stirring paddle and the movable electrode are electrically communicated with an electrode of the power supply respectively. The stirring paddle rotating in the first electrode chamber serves as an electrode, collision between powder particles and a metal electrode is enhanced, the contact area between the powder particles and the metal electrode is increased, or full contact between a powder material and electrolyte is guaranteed, and then the metal coating effect, namely the electroplating effect, of the surface of the powder material with the small surface area is improved; or metal impurities are promoted to be separated from the powder material, the electroplating or electrolysis effect is improved, and the electroplating or electrolysis efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrochemistry, and in particular to a rotary electroplating device for metal coating on the surface of powder materials or an electrolysis device for purifying solid waste powders such as crystalline silicon. Background Art

[0002] Powder materials are the basic raw materials for the preparation of functional materials such as conductive coatings, thermal conductive materials, electromagnetic shielding materials, absorbing materials, porous materials, gradient materials, etc. Their structure and properties directly affect the performance of functional materials.

[0003] Surface metal coating is an important surface modification method for powder materials. Surface metal coating can make the conductive powder material as the core and the surface conductive material as the coating layer work together, making the metal-coated powder material show more excellent performance, effectively preventing the oxidation of the core material, improving the conductivity of the metal-coated powder material, enhancing the mechanical properties of the metal-coated powder material, improving the surface smoothness and gloss of the metal-coated powder material, so that the metal-coated powder material can adapt to a wider range of application scenarios and have a longer service life.

[0004] In the prior art, the surface metal coating of powder materials mainly adopts methods such as chemical plating, high-energy ball milling and chemical displacement plating.

[0005] Through prior art search, there are the following known technical solutions:

[0006] Prior art 1: A composite powder electroplating device

[0007] Application number: 201810955848.8, application date: 2018.08.21, publication (announcement) date: 2018.11.23.

[0008] Prior art 1 relates to the field of electroplating technology, and specifically to a composite powder electroplating device. During operation, copper blocks and electroplating solution are added through a feed plate, composite powder is added to a feed hopper, an anode plate is connected to the positive electrode of a power supply, so that the copper blocks precipitate cations, a cathode plate is connected to the negative electrode of a power supply, and is used to reduce metal cations, a motor operates, a scraper rotates and fits with a rotating plate under the action of a spring, and the composite powder on the rotating plate rolls under the action of the scraper, and the copper blocks are scraped and cut by a scraping mechanism to increase the concentration of copper ions. At the same time, during the extrusion of the copper blocks, air bags No. 1 and No. 2 generate gas to supply an air blowing pipe, and during the flow of the electroplating solution, air is blown to prevent the composite powder from falling between the cathode plate and the anode plate, so that the composite powder is fully electroplated on one side of the cathode plate. The present invention increases the concentration of copper ions in the electroplating solution by making copper precipitate copper ions faster, and at the same time, the composite powder rolls and circulates in a rotating device to ensure sufficient electroplating and uniform and dense coating.

[0009] However, in the prior art 1, the metal is directly scraped into the electroplating chamber, which may take too long to dissolve the metal block due to its large size and become impurities. In addition, the air blowing pipe provided in the prior art 1 cannot completely prevent the powder from falling between the anode and cathode plates, and cannot realize the automated solid-liquid separation process.

[0010] Prior art 2: A device for electroplating nano-micron powders

[0011] Application number: 202223495614.0, application date: 2022.12.27, publication (announcement) date: 2023.05.23.

[0012] Prior art 2 discloses a device for nano-micron powder electroplating, which relates to the field of powder electroplating, including an electroplating chamber, an ultrasonic probe, a DC power supply, a liquid storage chamber, a first vacuum pump, and a second vacuum pump. A cathode current collector and an anode current collector are arranged in the electroplating chamber, and a negative power supply electrode and a positive power supply electrode are arranged on the DC power supply. The negative power supply electrode and the positive power supply electrode are both connected to the electroplating chamber, and the end of the negative power supply electrode is connected to the cathode current collector. The utility model provides a device for nano-micron powder electroplating, which integrates electroplating tools (power supply, current collector), dispersion tools (ultrasonic probe) and stacking tools (vacuum pump), and replaces the operation of electroplating-ultrasound-stack-electroplating that needs to be repeated for multiple cycles in nano-micron powder electroplating. It improves the working efficiency of nano-micron powder electroplating, simplifies the operation steps, and can produce nano-micron powders with uniform and dense coating, which is very suitable for nano-micron powder electroplating.

[0013] However, in the prior art 2, the electrode adopts a fixed structure, which leads to a weak collision effect between the electrode and the powder material, a small contact area, and a low electroplating efficiency; if the ultrasonic crushing is not uniform and thorough enough, it will also cause problems such as agglomeration of the powder material.

[0014] Through the above search, it is found that the above technical solutions do not affect the novelty of the utility model.

[0015] In addition, a large amount of solid waste is generated during the production of functional materials such as semiconductor materials, conductive coatings, thermal conductive materials, electromagnetic shielding materials, absorbing materials, and porous materials. Semiconductor silicon-based semiconductor materials are important raw materials for high-tech products such as solar cells and integrated circuits, and a large amount of cutting waste is inevitably generated during their production. These wastes contain useful high-quality silicon materials and various impurities, so it is of great significance to effectively purify them.

[0016] Silicon-based semiconductor cutting powder waste purification technology has a wide range of applications in the fields of solar cells, integrated circuits, etc. In the solar cell industry, silicon-based semiconductors are one of the main raw materials for manufacturing solar cells. By purifying silicon-based semiconductors in cutting waste, valuable raw material resources can be recycled, production costs can be reduced, and production capacity can be increased. In the integrated circuit industry, silicon-based semiconductors are key materials for manufacturing semiconductor devices. The high-quality silicon materials after waste purification can be used for reproduction, reducing the demand for original resources and reducing the cost of electronic product manufacturing.

[0017] There are some problems in the purification process of silicon-based semiconductor cutting powder waste. At present, the traditional recycling method is mostly rough purification followed by mixed treatment. The traditional purification method may have problems such as high processing cost, high energy consumption, complex process, and large environmental pollution. However, there are fewer studies on the stirring electrolysis method, which has the characteristics of simple process, low environmental pollution, and low cost. Compared with ordinary plated parts, solid waste powder materials have the characteristics of small particle size, large specific surface area, and low density, which makes it less likely to contact electrochemical reactions during the electrolysis process and difficult to electrolyze. This may be the reason for the lack of research on solid waste powder electrolysis, which also makes the development of powder electrolysis equipment slow. In addition, environmental pollutants such as wastewater and waste gas generated during the waste purification process are also important issues that need to be dealt with.

[0018] Silicon-based semiconductor cutting powder waste purification technology has important technical value. First, through effective purification treatment, silicon-based semiconductors and other useful components in cutting waste can be recycled, reducing resource waste and reducing production costs. Secondly, the development of waste purification technology can promote the sustainable development of the semiconductor industry. In addition, the development of environmentally friendly and efficient waste purification technology can also help reduce environmental pollution, protect the ecological environment, and meet the requirements of sustainable development. But there are also some challenges and problems that need to be solved.

[0019] Electrolysis and electroplating are reverse processes. The technical problems faced by electroplating of powder materials and electrolytic purification of crystalline silicon powder waste (SPW) have certain similarities. The electroplating device for powder materials can be expected to be used as an electrolytic device for purifying crystalline silicon powder waste (SPW) by adjusting the electrode arrangement. This will make it possible to solve the problems of electroplating of powder materials and electrolytic purification of crystalline silicon powder waste (SPW) based on the same device. Utility Model Content

[0020] The utility model provides a rotary powder electroplating or electrolytic impurity removal device in order to avoid the deficiencies of the prior art.

[0021] The utility model adopts the following technical solution to solve the technical problem: a rotary powder electroplating or electrolytic impurity removal device, comprising a first electrode chamber and a second electrode chamber connected to each other, a power supply, a stirring paddle, a brush structure, a movable electrode, and an isolation membrane arranged between the first electrode chamber and the second electrode chamber to separate the two;

[0022] The first electrode chamber and the second electrode chamber are in the form of a trough structure with an open top, and the brush structure is fixedly installed above the mouth of the first electrode chamber; the stirring paddle is coaxially installed and connected with the brush structure, and the brush structure provides the stirring paddle with a degree of freedom to rotate around a common axis of the two, and the stirring paddle is connected to a driving machine that drives it to rotate around its own axis;

[0023] The movable electrode is disposed in the second electrode chamber and immersed below the liquid surface in the second electrode chamber;

[0024] When the device is used as a powder electroplating device:

[0025] The stirring paddle and the movable electrode serve as a metal cathode and a metal anode, respectively, and are electrically connected to the negative electrode and the positive electrode of the power supply;

[0026] When the device is used as a powder electrolysis impurity removal device:

[0027] The stirring paddle and the movable electrode serve as a metal anode and a metal cathode respectively, and are electrically connected to the anode and cathode of the power supply.

[0028] Furthermore, the brush structure includes an inner sleeve, an outer sleeve, a slot and a ball;

[0029] The inner sleeve and the outer sleeve are both cylindrical in structure, and the outer side wall of the inner sleeve and the inner side wall of the outer sleeve are respectively provided with annular grooves, and each of the balls is located between the inner sleeve and the outer sleeve, and the limit clamps are arranged in the grooves on both sides of the balls, and form rolling pairs with the inner sleeve and the outer sleeve respectively;

[0030] The inner shaft sleeve is sleeved outside the upper part of the stirring paddle and is fixedly mounted on the stirring paddle.

[0031] Furthermore, the brush structure is made of a conductive material, and a conductive ring is fixedly mounted on the outside of the brush structure and connected to the electrode of the power supply via a wire, so that the stirring paddle is electrically connected to the electrode of the power supply.

[0032] Furthermore, it also includes a bracket with a lifting function;

[0033] The support is provided with an insulating support rod horizontally extending to above the opening of the first electrode chamber, and the brush structure is installed and fixed to the end of the insulating support rod.

[0034] Furthermore, a crossbar, a locking bolt and a vertical rod are provided;

[0035] The front end of the crossbar is fixedly installed, and the rear end extends to the upper part of the mouth of the second electrode chamber, forming a sleeve structure with an axis vertically arranged; the vertical rod is inserted and installed in the sleeve structure, and a sliding pair is formed between the vertical rod and the sleeve structure along the common axis of the two;

[0036] The locking bolt passes through the side wall of the sleeve structure and is threadedly connected to the sleeve structure, and its inner end is pressed against the vertical pole to limit the relative sliding of the sleeve structure and the vertical pole; the movable electrode is fixed to the bottom end of the vertical pole.

[0037] Furthermore, the crossbar and the vertical pole are made of conductive materials, and the conductive buckle is installed and fixed to the crossbar, connected to the electrode of the power supply through a wire, so that the movable electrode is electrically connected to the electrode of the power supply.

[0038] Furthermore, it also includes a pump, a liquid guide tube, a centrifugal cylinder, a collection cylinder, a valve and a liquid return pipe;

[0039] The centrifugal cylinder is a cylindrical structure with an open top, and its side walls and bottom plate are both mesh-shaped; the centrifugal cylinder is connected to a centrifugal drive machine that drives it to rotate around its own axis;

[0040] A liquid discharge port is provided at the bottom of the first electrode chamber, and the liquid discharge port is connected to the opening of the centrifugal cylinder through a liquid guide tube provided with the valve;

[0041] The collecting cylinder is arranged around the circumferential outer side and the bottom of the centrifugal cylinder, and a liquid collecting port is provided at the bottom of the side wall thereof. The liquid collecting port is connected with the liquid returning port provided at the top of the side wall of the second electrode chamber through the liquid returning pipe provided with the pump.

[0042] Furthermore, an upwardly protruding boss is provided at the center of the bottom of the centrifugal cylinder, and the end of the liquid guide tube is connected to the top of the boss.

[0043] Furthermore, the end of the catheter is beveled.

[0044] Furthermore, the side walls of the first electrode chamber and the second electrode chamber are respectively provided with a first liquid port and a second liquid port, and the ends of the first liquid port and the second liquid port are radially outwardly extending mounting edge structures; the isolation membrane is fixedly arranged in a connecting tube of a tubular structure, and both ends of the connecting tube are also radially outwardly extending mounting edge structures;

[0045] The connecting pipe is sealed and connected to the first liquid port and the second liquid port respectively through sealing washers arranged between the corresponding pair of mounting edges and threaded connectors threadedly fastened through the corresponding pair of mounting edges.

[0046] The utility model provides a rotary powder electroplating or electrolytic impurity removal device, which has the following beneficial effects:

[0047] 1. The rotary powder electroplating device provided by the utility model uses the stirring paddle rotating in the first electrode chamber as an electrode, which strengthens the collision between the powder particles and the metal electrode and increases the contact area between the two, thereby improving the metal coating effect, i.e., the electroplating effect, on the surface of the powder material with a smaller surface area and improving the electroplating efficiency.

[0048] 2. The rotary electrolytic impurity removal device provided by the utility model uses the stirring paddle rotating in the first electrode chamber as an electrode, which enhances the fluidity of the powder material to ensure sufficient contact between the powder material and the electrolyte, promotes the separation of metal impurities from the powder material, and thus ensures the electrolytic impurity removal effect.

[0049] 3. The rotary electrolytic impurity removal device provided by the utility model solves the problem in the prior art that the contact area between the solid waste powder and the electrolyte is small and thus cannot be effectively electrolyzed, which is determined by the characteristics of the solid waste powder material itself. Compared with the organic solvent and acid washing purification methods, it effectively reduces the complexity and implementation cost of the purification process. While being suitable for silicon-based solid waste, it is also suitable for metal impurity removal of other solid waste powders, can meet the needs of industrial production, and at the same time promote technological progress and environmental protection development.

[0050] 4. The centrifugal cylinder and separation cylinder of the utility model realize solid-liquid separation by mesh structure screening and centrifugal rotation, thereby improving the material collection efficiency of electroplating and electrolysis; the plating liquid and electrolyte collected in the collecting cylinder can be returned to the electrode chamber through the return pipe under the action of the pump, thereby realizing the recycling of the plating liquid or electrolyte, which is beneficial to the control of the working cost of electroplating or electrolysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic diagram of the structure of the utility model;

[0052] Figure 2 It is a partial enlarged structural schematic diagram of the utility model;

[0053] Figure 3 It is a structural schematic diagram of the brush structure of the utility model.

[0054] In the figure:

[0055] 1. Bracket; 2. Pump; 3. First electrode chamber; 4. Brush structure; 4-1. Inner bushing; 4-2. Outer bushing; 4-3. Slot; 4-4. Ball; 5. Power supply; 6. Isolation membrane; 8. Crossbar; 9. Vertical pole; 10. Liquid guide tube; 13. Agitator; 14. Second electrode chamber; 15. Centrifugal cylinder; 16. Collecting cylinder; 19. Movable electrode; 21. Liquid return pipe; 22. Valve. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0057] like Figure 1~Figure 3 As shown, its structural relationship is as follows: it includes a first electrode chamber 3 and a second electrode chamber 14 which are connected and arranged, and also includes a power supply 5, a stirring paddle 13, a brush structure 4, a movable electrode 19, and an isolation membrane 6 which is arranged between the first electrode chamber 3 and the second electrode chamber 14 and is used to separate the two;

[0058] The first electrode chamber 3 and the second electrode chamber 14 are in a trough structure with an open top, and the brush structure 4 is fixedly installed above the mouth of the first electrode chamber 3; the stirring paddle 13 is coaxially installed and connected with the brush structure 4, and the brush structure 4 provides the stirring paddle 13 with the freedom to rotate around the common axis of the two, and the stirring paddle 13 is connected to a driving machine that drives it to rotate around its own axis;

[0059] The movable electrode 19 is disposed in the second electrode chamber 14 and immersed below the liquid surface in the second electrode chamber 14;

[0060] When the device is used as a powder plating device:

[0061] The stirring paddle 13 and the movable electrode 19 serve as a metal cathode and a metal anode, respectively, and are electrically connected to the negative electrode and the positive electrode of the power supply;

[0062] When the device is used as a powder electrolysis impurity removal device:

[0063] The stirring blade 13 and the movable electrode 19 serve as a metal anode and a metal cathode, respectively, and are electrically connected to the anode and cathode of a power source.

[0064] Preferably, the brush structure 4 includes an inner sleeve 4-1, an outer sleeve 4-2, a slot 4-3 and a ball 4-4;

[0065] The inner sleeve 4-1 and the outer sleeve 4-2 are both cylindrical structures, and the outer wall of the inner sleeve 4-1 and the inner wall of the outer sleeve 4-2 are respectively provided with annular grooves 4-3, and each ball 4-4 is located between the inner sleeve 4-1 and the outer sleeve 4-2, and the limit clamps are arranged in the grooves 4-3 on both sides of the ball 4-4, and form rolling pairs with the inner sleeve 4-1 and the outer sleeve 4-2 respectively;

[0066] The inner shaft sleeve 4 - 1 is sleeved on the outer portion of the upper portion of the stirring paddle 13 and is fixedly mounted on the stirring paddle 13 .

[0067] Preferably, the brush structure 4 is made of a conductive material, and a conductive buckle is installed and fixed to the outside of the brush structure 4 and connected to the electrode of the power source 5 through a wire, so that the stirring paddle 13 is electrically connected to the electrode of the power source 5 .

[0068] Preferably, it also includes a bracket 1 with a lifting function;

[0069] The bracket 1 is provided with an insulating support rod horizontally extending to the top of the opening of the first electrode chamber 3, and the brush structure 4 is installed and fixed to the end of the insulating support rod.

[0070] In actual setting, the driving motor can be a stirring motor, and the stirring motor can also be installed and fixed to the bracket 1 through a motor support rod set above the insulating support rod; at this time, the output end of the stirring motor is set downward and fixed to the top shaft of the stirring paddle 13, and the shaft connection should be covered with an insulating layer.

[0071] Preferably, a cross bar 8, a locking bolt and a vertical bar 9 are also provided;

[0072] The front end of the crossbar 8 is fixedly installed, and the rear end extends to the top of the mouth of the second electrode chamber 14, forming a sleeve structure with an axis vertically arranged; the vertical rod 9 is inserted and installed in the sleeve structure, and a sliding pair is formed between the sleeve structure and the sleeve structure along the common axis of the two;

[0073] The locking bolt passes through the side wall of the sleeve structure and is threadedly connected to the sleeve structure. The inner end of the locking bolt presses against the vertical rod 9 to limit the relative sliding of the sleeve structure and the vertical rod 9. The movable electrode 19 is installed and fixed to the bottom end of the vertical rod 9.

[0074] Preferably, the crossbar 8 and the vertical bar 9 are made of a conductive material, and the conductive buckle is fixed to the crossbar 8 and connected to the electrode of the power source 5 through a wire, so that the movable electrode 19 is electrically connected to the electrode of the power source 5.

[0075] Preferably, it also includes a pump 2, a liquid guide tube 10, a centrifugal cylinder 15, a collecting cylinder 16, a valve 22 and a liquid return pipe 21;

[0076] The centrifugal cylinder 15 is a cylindrical structure with an open top, and its side walls and bottom plate are both mesh-shaped; the centrifugal cylinder 15 is connected to a centrifugal drive machine that drives it to rotate around its own axis;

[0077] In actual configuration, the centrifugal drive can be disposed below the centrifugal cylinder 15, with its output end facing upward and connected and fixed to the center of the bottom plate of the centrifugal cylinder 15;

[0078] A liquid discharge port is provided at the bottom of the first electrode chamber 3, and the liquid discharge port is connected to the opening of the centrifugal cylinder 15 through a liquid guide tube 10 provided with a valve 22;

[0079] The collecting cylinder 16 is arranged around the outer side and bottom of the centrifugal cylinder 15, and is used to collect the liquid flowing downward from the centrifugal cylinder 15 under the action of gravity and the liquid splashing outward under the action of centrifugal force; a liquid collecting port is opened at the bottom of its side wall, and the liquid collecting port is connected to the liquid return port opened at the top of the side wall of the second electrode chamber 14 through a liquid return pipe 21 provided with a pump 2.

[0080] Preferably, a boss that bulges upward is provided at the center of the bottom of the centrifugal cylinder 15, and the end of the liquid guiding tube 10 is connected to the top of the boss.

[0081] The boss allows the mixed fluid discharged from the first electrode chamber 3 to flow down along the boss at the position of the central axis of the centrifugal cylinder 15.

[0082] Instead of directly falling or splashing to a position of the centrifugal barrel 15 that is far away from the central axis; because the linear velocity of each position on the centrifugal barrel 15 is positively correlated with the distance of the position from the central axis, the mixed fluid flows down along the boss into the centrifugal barrel 15, which can make the mixed fluid enter the centrifugal barrel 15 at a relatively low movement speed, thereby avoiding the liquid entering the centrifugal separation device at a relatively fast speed, causing splashing and other adverse effects.

[0083] Preferably, the distal end of the catheter 10 is chamfered.

[0084] The chamfered structure has a good flow-guiding effect, and can make the mixed fluid flow down along the chamfered structure into the centrifugal cylinder 15 , which can effectively solve the problem of fluid splashing when the mixed fluid enters the centrifugal cylinder 15 .

[0085] Preferably, the side walls of the first electrode chamber 3 and the second electrode chamber 14 are respectively provided with a first liquid port and a second liquid port, and the ends of the first liquid port and the second liquid port are radially outwardly extending mounting edge structures; the isolation membrane 6 is fixedly arranged in a connecting tube of a tubular structure, and both ends of the connecting tube are also radially outwardly extending mounting edge structures;

[0086] The connecting pipe is sealed and installed with the first liquid port and the second liquid port respectively through sealing washers arranged between the corresponding pair of mounting edges and threaded connectors threadedly fastened through the corresponding pair of mounting edges.

[0087] When used specifically, the following processes are included:

[0088] The first step is to adjust the stirring paddle 13 to a suitable installation height by using the lifting function of the bracket 1 according to the designed powder material feeding amount;

[0089] For example, when the designed powder material feed amount is small, the bracket 1 should be lowered to lower the installation height of the stirring paddle 13 accordingly, so that the stirring head of the stirring paddle 13 extends to a position below the liquid level in the first electrode chamber 3 and closer to the bottom, so that the stirring head can more fully promote the movement of the powder material and contact with the powder material.

[0090] The second step is to unscrew the locking bolt, slide the vertical rod 9 in the sleeve structure, and adjust the installation height of the movable electrode 19 so that the movable electrode 19 is at the position with the largest area facing the second liquid port.

[0091] The third step is to check the insulation between the stirring paddle 13 and the stirring motor and the brush structure 4 and the insulating support rod, and check the conductivity of the connection between the stirring paddle 13 and the brush structure 4; after checking that everything is correct, adjust the speed of the stirring paddle 13 according to the design requirements.

[0092] Step 4, when the above device is used as a rotary powder electroplating device, the outer sleeve 4-2 of the brush structure 4 and the cross bar 8 are respectively connected to the negative electrode and the positive electrode of the power source 5 through conductive buckles and wires, and the conductivity of the brush structure 4 is used to electrically connect the stirring paddle 13 as the metal cathode to the negative electrode of the power source 5, and at the same time, the conductivity of the cross bar 8 and the vertical rod 9 is used to electrically connect the movable electrode 19 as the metal anode to the positive electrode of the power source 5;

[0093] When the above-mentioned device is used as a rotary electrolytic impurity removing device, the outer sleeve 4-2 of the brush structure 4 and the cross bar 8 are respectively connected to the anode and cathode of the power supply 5 through conductive rings and wires. The conductivity of the brush structure 4 is used to electrically connect the stirring paddle 13 serving as the metal anode to the anode of the power supply 5. At the same time, the conductivity of the cross bar 8 and the vertical bar 9 is used to electrically connect the movable electrode 19 serving as the metal cathode to the cathode of the power supply 5.

[0094] Step 5, start the power supply 5 and the stirring motor to start electroplating or electrolysis;

[0095] During the electroplating or electrolysis process, the stirring motor continuously drives the stirring paddle 13 to rotate around its own axis to enhance the collision between the powder material and the metal electrode, increase the contact area between the powder material and the metal electrode, or enhance the movement of the powder material to ensure that the powder material is in full contact with the electrolyte.

[0096] Step 6: After the electroplating or electrolysis is completed, turn off the power supply and the stirring motor, open the valve 22 and start the centrifugal drive;

[0097] At this time, the mixed fluid in the first electrode chamber 3 flows into the centrifugal cylinder 15 through the liquid guide tube 10, and the centrifugal cylinder 15 keeps rotating under the action of the centrifugal drive motor. The powder material in the mixed fluid is retained in the centrifugal cylinder 15 under the screening action of the mesh structure of the centrifugal cylinder 15, and the liquid in the mixed fluid passes through the mesh structure of the centrifugal cylinder 15 and enters the collecting cylinder 16, and then flows back to the second electrode chamber 14 through the return pipe 21 under the action of the water pump 2, thereby realizing the recycling of the plating solution or the electrolyte.

[0098] In the seventh step, after the powder material in the first electrode chamber 3 is completely sieved into the centrifugal cylinder 15 , the powder material is taken out from the centrifugal cylinder 15 .

[0099] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0100] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotary powder electroplating or electrolytic impurity removal device, comprising a first electrode chamber (3) and a second electrode chamber (14) connected to each other, Features: It also includes a power source (5), a stirring paddle (13), a brush structure (4), a movable electrode (19), and an isolation membrane (6) disposed between the first electrode chamber (3) and the second electrode chamber (14) for separating the two. The first electrode chamber (3) and the second electrode chamber (14) are in the form of a trough structure with an open top, and the brush structure (4) is fixedly mounted above the mouth of the first electrode chamber (3); the stirring paddle (13) and the brush structure (4) are coaxially mounted and connected, and the brush structure (4) provides the stirring paddle (13) with the freedom to rotate around a common axis of the two, and the stirring paddle (13) is connected to a driving machine that drives it to rotate around its own axis; The movable electrode (19) is arranged in the second electrode chamber (14) and immersed below the liquid surface in the second electrode chamber (14); When the device is used as a powder electroplating device: The stirring paddle (13) and the movable electrode (19) serve as a metal cathode and a metal anode, respectively, and are electrically connected to the negative electrode and the positive electrode of the power source; When the device is used as a powder electrolysis impurity removal device: The stirring paddle (13) and the movable electrode (19) serve as a metal anode and a metal cathode, respectively, and are electrically connected to the anode and cathode of the power source.

2. A rotary powder electroplating or electrolytic impurity removal device according to claim 1, Features: The brush structure (4) comprises an inner shaft sleeve (4-1), an outer shaft sleeve (4-2), a slot (4-3) and a ball (4-4); The inner shaft sleeve (4-1) and the outer shaft sleeve (4-2) are both cylindrical structures, and the outer side wall of the inner shaft sleeve (4-1) and the inner side wall of the outer shaft sleeve (4-2) are respectively provided with annular structured clamping grooves (4-3), and each of the balls (4-4) is located between the inner shaft sleeve (4-1) and the outer shaft sleeve (4-2), and is limitedly clamped in the clamping grooves (4-3) on both sides thereof, and respectively forms a rolling pair with the inner shaft sleeve (4-1) and the outer shaft sleeve (4-2); The inner shaft sleeve (4-1) is sleeved outside the upper part of the stirring paddle (13) and is mounted and fixed to the stirring paddle (13).

3. A rotary powder electroplating or electrolytic decontamination device according to claim 1 or 2, Features: The brush structure (4) is made of a conductive material, and a conductive buckle is fixedly mounted on the outside of the brush structure (4) and connected to an electrode of the power source (5) via a wire, thereby electrically connecting the stirring paddle (13) to the electrode of the power source (5).

4. A rotary powder electroplating or electrolytic impurity removal device according to claim 3, Features: It also includes a bracket (1) with a lifting function; The support (1) is provided with an insulating support rod extending horizontally to above the opening of the first electrode chamber (3), and the brush structure (4) is mounted and fixed to the end of the insulating support rod.

5. A rotary powder electroplating or electrolytic impurity removal device according to claim 3, Features: A crossbar (8), a locking bolt and a vertical rod (9) are also provided; The front end of the cross bar (8) is fixedly installed, and the rear end extends to the top of the mouth of the second electrode chamber (14), forming a sleeve structure with an axis vertically arranged; the vertical rod (9) is inserted and installed in the sleeve structure, and a sliding pair is formed between the sleeve structure and the vertical rod along the common axis of the two. The locking bolt passes through the side wall of the sleeve structure and is threadedly connected to the sleeve structure, with its inner end pressed against the vertical rod (9) to limit the relative sliding of the sleeve structure and the vertical rod (9); the movable electrode (19) is mounted and fixed to the bottom end of the vertical rod (9).

6. A rotary powder electroplating or electrolytic impurity removal device according to claim 5, Features: The crossbar (8) and the vertical bar (9) are made of a conductive material, and the conductive ring buckle is mounted and fixed on the crossbar (8) and connected to the electrode of the power source (5) via a wire, so that the movable electrode (19) is electrically connected to the electrode of the power source (5).

7. A rotary powder electroplating or electrolytic impurity removal device according to claim 1, Features: It also includes a pump (2), a liquid guide tube (10), a centrifugal cylinder (15), a collecting cylinder (16), a valve (22) and a liquid return tube (21); The centrifugal cylinder (15) is in the form of a cylindrical structure with an open top, and its side walls and bottom plate are both in the form of a mesh; the centrifugal cylinder (15) is connected to a centrifugal driving machine that drives it to rotate around its own axis; A liquid discharge port is provided at the bottom of the first electrode chamber (3), and the liquid discharge port is connected to the opening of the centrifuge cylinder (15) via a liquid guide tube (10) provided with the valve (22); The collecting cylinder (16) is arranged around the outer side and bottom of the centrifugal cylinder (15), and a liquid collecting port is provided at the bottom of the side wall thereof. The liquid collecting port is connected to a liquid returning port provided at the top of the side wall of the second electrode chamber (14) via the liquid returning pipe (21) provided with the pump (2).

8. A rotary powder electroplating or electrolytic impurity removal device according to claim 7, Features: An upwardly protruding boss is provided at the center of the bottom of the centrifugal cylinder (15), and the end of the liquid guide tube (10) is connected to the top of the boss.

9. A rotary powder electroplating or electrolytic impurity removal device according to claim 7 or 8, Features: The end of the catheter (10) is chamfered.

10. A rotary powder electroplating or electrolytic impurity removal device according to claim 1, Features: The side walls of the first electrode chamber (3) and the second electrode chamber (14) are respectively provided with a first liquid inlet and a second liquid inlet, and the ends of the first liquid inlet and the second liquid inlet are radially outward-facing mounting edge structures; the isolation membrane (6) is fixedly arranged in a connecting tube of a tubular structure, and both ends of the connecting tube are also radially outward-facing mounting edge structures; The connecting pipe is sealed and connected to the first liquid port and the second liquid port respectively through sealing washers arranged between the corresponding pair of mounting edges and threaded connectors threadedly fastened through the corresponding pair of mounting edges.

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