A rotary electrowinning device

Abstract

The invention discloses a rotary electrolytic equipment, wherein a driving motor drives a small gear shaft to drive a large gear to rotate. The upper and lower plate small springs and upper and lower rotary roller bearings are respectively installed in the rotary roller bearing grooves on both sides of the upper and lower plates of a rotary bracket of a rotary bracket; the large gear is screwed to the lower plate of the rotary bracket. A lower anode positioning column with a lower anode positioning hole is provided at the center of the lower end cover. The upper end cap of the upper end cover is provided with an upper anode positioning column with an upper anode positioning hole. The rotary roller, the upper and lower ends are correspondingly tightly fitted on the upper rotary roller bearing and the lower rotary roller bearing; the anode is inserted in the upper anode positioning hole and the lower anode positioning hole. The cathode is sealed and fixedly connected with the upper and lower end covers. The cathode liner, the upper end is inserted between the cathode liner pressure ring and the cathode, and the lower end is inserted between the cathode and the lower end cover. While improving production efficiency and reducing system investment cost and operation cost, the equipment also brings great benefits to the recycling and treatment of electrolytic solution.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrometallurgy and the production of metals from metal ion solutions by electrochemical principles, and specifically refers to a structural improvement of rotary electrowinning equipment. Background Art

[0002] Electrodeposition of metals from solutions belongs to the scope of hydrometallurgy, from ore to raw material, from raw material to metal material, involving a wide range of electrochemical phenomena and applications. Theory and application promote each other and promote the development of metallurgical electrochemical technology. In the process of hydrometallurgy, metal leaching, purification, extraction and refining, from the current application technology, most of the metals in the periodic table can be prepared by electrolysis, but there are currently about 20 to 30 kinds of metals produced by large-scale electrolysis in industry.

[0003] Electrolysis is the process of passing an electric current through an electrolyte solution or a molten substance (also known as an electrolyte) to cause a redox reaction at the cathode and anode. Electrolysis is widely used in the metallurgical industry, such as extracting metals from ores or compounds (electrolytic metallurgy) or purifying metals (electrolytic purification), and depositing metals from solutions (electroplating). Electrolysis is a very powerful means of promoting redox reactions. Many redox reactions that are difficult to carry out can be achieved through electrolysis. For example, molten fluoride can be oxidized to elemental fluorine at the anode, and molten lithium salt can be reduced to metallic lithium at the cathode. The electrolytic industry plays an important role in the national economy. The smelting of many non-ferrous metals (such as sodium, potassium, magnesium, aluminum, etc.) and rare metals (such as zirconium, hafnium, etc.) and the refining of metals (such as copper, zinc, lead, etc.), the preparation of basic chemical products (such as hydrogen, oxygen, caustic soda, potassium chlorate, hydrogen peroxide, ethanedinitrile, etc.), as well as electroplating, electropolishing, anodizing, etc., are all achieved through electrolysis.

[0004] At present, domestic and foreign industries are researching and developing new electrolytic electrowinning technologies and equipment to solve the many drawbacks of metallurgical electrolysis, such as environmental pollution and high energy consumption.

[0005] Electrodeposition is the process of electrochemical deposition of metals or alloys from aqueous solutions, non-aqueous solutions or molten salts of their compounds. It is the basis of metal electrolytic smelting, electrolytic refining, electroplating and electroforming. These processes are carried out under certain electrolytes and operating conditions.

[0006] The reduction and precipitation of metals is closely related to cathode polarization. According to the different causes of the electrodeposition process, polarization is divided into concentration polarization, electrochemical polarization and other types. The electrodeposition process controlled by different polarization types will have different characteristics; concentration polarization: During the electrodeposition process, the particles participating in the reaction are deposited on the electrode surface, or the electrode reaction products accumulate near the electrode surface, which will cause the concentration of the reaction particles near the electrode surface to change, causing a difference in concentration between the electrode surface and the solution body. The change in electrode potential caused by concentration difference is called concentration polarization. Concentration polarization has the following characteristics: concentration polarization increases with the increase of electrode current density. When a certain potential is reached, a limiting current that does not change with the electrode potential will appear; stirring the solution can greatly reduce concentration polarization and increase the limiting current density. In the process of electrodeposition, when the electrode process of a solution composed of simple metal salts is controlled by concentration polarization, the metal deposition layer obtained on the electrode surface is often rough; electrochemical polarization: when metal ions are deposited, the ions in the liquid phase must overcome or cross a certain energy barrier to be deposited on the cathode, and the change in electrode potential caused by this is called electrochemical polarization. The main factors affecting electrochemical polarization are: electrode materials, different electrode materials have different catalytic activities for electrochemical reactions; most of the electrodeposition in the existing technology adopts electrolysis process, which requires the concentration of metal ions in the leaching solution to be high and the acidity to be high, and is only suitable for refining; while the use of direct electrolysis equipment can directly produce metals from solutions containing metal ions, and the purity is high, energy saving and environmental protection.

[0007] The existing cyclonic electrowinning equipment is an electrowinning equipment that aims to overcome the concentration polarization and electrochemical polarization in the electrowinning process to obtain high-purity cathode deposited metal. Its main means is that its liquid inlet pipe enters horizontally along the tangent of the inner wall of the cathode tube, and the liquid outlet pipe above also flows out horizontally along the tangent of the inner wall of the cathode. Increasing the flow rate and the flow velocity on the cathode surface, it is hoped that the liquid flow between the cathode and the anode will flow in a spiral from bottom to top at high speed to destroy the concentration polarization and electrochemical polarization that occur in the electrowinning process.

[0008] The existing cyclone electrowinning equipment cannot really swirl, and defects such as burrs are easy to grow during the electrowinning process due to large flow rates. Since swirl is possible only with large flow rates, the operating cost is high and the energy consumption is large.

[0009] like Figure 1As shown, it is very difficult for the existing cyclone electrowinning equipment to obtain an ideal spiral rising liquid flow. The liquid flow that just enters will rotate around the circumferential wall of the cathode 2, but with the rise of the liquid flow and the liquid level difference between the upper and lower parts of the tube, the liquid flow will not spiral up as imagined, but will short-circuit until it flows out of the electrowinning equipment. Second: According to the principle of fluid mechanics, in a pipeline filled with liquid, the liquid velocity is high in the middle, and the closer to the tube wall, the slower the liquid velocity. The fluid flows in the pipeline, and the part of the fluid layer that affects its flow due to the existence of the solid wall is called the boundary layer of the fluid flow. When the actual fluid flows along the wall, the velocity of a very thin layer of fluid close to the wall is zero. Along the direction perpendicular to the flow direction, from the wall to the main body of the fluid, the flow velocity increases rapidly from zero, and then the velocity increase gradually slows down until it remains basically unchanged. The concentration polarization generated in the electrowinning process is a very thin area close to the surface of the cathode 2, so increasing the flow velocity to eliminate some inherent defects in the electrowinning process has limited effect. Of course, the greater the flow rate in the tube, the more beneficial it is to electrolysis. However, when the flow rate is too high, a larger circulation flow rate is required, the greater the motor power of the circulation pump is, and the greater the comprehensive power consumption during electrolysis.

[0010] The anode 1 of the cyclone electrowinning is an insoluble anode. The main body is an iridium-tantalum alloy sintered on a titanium-based surface. It is an anti-oxidation layer that protects the anode 1 and is relatively expensive. Cyclone electrowinning cannot eradicate defects such as burrs on the cathode. Once burrs appear, they grow much faster than other places until they come into contact with the anode, causing a short circuit between the cathode and the cathode. Then, the iridium-tantalum alloy layer on the anode will be burned out, and the anode 1 will soon be scrapped. When the burrs on the cathode 2 grow to contact the anode 1, the current is relatively large, and the part close to the anode will be burned out, and then continue to grow until it burns out again next time. Repeatedly, the last cyclone electrowinning column is poorly deposited, and it affects the current efficiency and stability of the entire system.

[0011] Cyclone electrolysis requires a large circulation flow, so its electrolysis column cannot be made very large. Generally, the inner diameter of the cathode column is about 200 mm, and the production efficiency is low. Summary of the invention

[0012] In view of the problems existing in the prior art, the present invention provides a rotary electrowinning device. The device can improve current efficiency and deposit high purity metal; while improving production efficiency and reducing system investment cost and operating cost, it also brings great benefits to the recycling and treatment of electrowinning solution.

[0013] To achieve the above object, the present invention provides the following technical solutions:

[0014] The rotary electrowinning device comprises a driving part, a rotary support, a rotary roller, a cathode, an anode, a cathode liner, a large gear, an upper end cover and a lower end cover; wherein:

[0015] The driving part includes a driving motor, a coupling, a sealing sleeve, a pinion shaft and a driving part bracket; the driving motor is fixed to the driving part bracket, and the driving part bracket is fixedly connected to the lower end cover; the pinion shaft is inserted into the sealing sleeve, the lower end of the pinion shaft passes through the sealing sleeve and is connected to the driving motor through the coupling, and the upper end extending out of the sealing sleeve is engaged with the large gear; the sealing sleeve is fixedly mounted on the lower end cover;

[0016] The slewing bracket is arranged between the anode and the cathode; it comprises an upper plate of the slewing bracket, a lower plate of the slewing bracket, and a plurality of slewing support rods to form a mesh structure; upper plate small springs and upper slewing roller bearings are installed in upper slewing roller bearing grooves on both sides of the upper plate of the slewing bracket; lower plate small springs and lower slewing roller bearings are installed in lower slewing roller bearing grooves on both sides of the lower plate of the slewing bracket;

[0017] A large gear is rotatably arranged on the lower positioning column of the anode of the lower end cover; and the large gear is screwed to the lower plate of the swivel bracket;

[0018] The lower end cover has an anode lower positioning column at the center, the anode lower positioning column has an anode lower positioning hole, and an anode lower sealing groove is arranged on the upper end surface of the anode lower positioning column; a lower end cover sealing groove is arranged around the upper end surface of the lower end cover; and a liquid inlet hole is arranged on the side wall of the lower end cover;

[0019] The upper end cover comprises an upper end cover body and an upper end cover cap; the upper end cover cap is screwed on the upper end cover body; an anode upper positioning column is provided in the middle of the upper end cover cap, and the anode upper positioning column has an anode upper positioning hole; an upper end cover upper sealing groove is provided on the upper end surface of the upper end cover body, an upper end cover lower sealing groove is provided on the lower end surface, and a liquid outlet hole is provided on the side wall;

[0020] The upper and lower ends of the rotary roller are tightly matched on the upper rotary roller bearing and the lower rotary roller bearing;

[0021] The anode has an anode upper column and an anode lower column protruding from the upper and lower ends respectively; a cathode liner pressing ring is provided between the upper end surface of the anode and the lower end surface of the upper plate of the swivel bracket; the anode upper column is inserted into the upper positioning hole of the anode; the anode lower column is inserted into the lower positioning hole of the anode, and the lower end surface of the anode is against the upper end surface of the lower positioning column of the anode; the anode lower column is fixedly and sealedly connected to the lower end cover through an anode nut;

[0022] The cathode has upper and lower cathode flanges of the same specification at the upper and lower ends respectively; the upper cathode flange is sealed and fixedly connected to the upper end cover; the lower cathode flange is sealed and fixedly connected to the lower end cover;

[0023] The cathode liner has an upper end inserted between the cathode liner pressure ring and the cathode, and a lower end inserted between the cathode and the lower end cover.

[0024] In the rotary electrowinning equipment as described above, the rotary bracket is a rotary bracket made of modified PPO, the rotary roller is a rotary roller made of modified PPO, the large gear is a large gear made of modified PPO, and the upper and lower end covers are upper and lower end covers made of modified PPO; and the anode is a titanium-based insoluble anode; the cathode is a cathode made of SUS316L stainless steel; and the cathode lining is a cathode lining made of stainless steel SUS316 material.

[0025] In the rotary electrowinning device as described above, the sealing sleeve is internally provided with a pinion shaft upper bearing and a pinion shaft lower bearing, and a driving seal is provided between the pinion shaft upper bearing and the pinion shaft lower bearing; the pinion shaft passes through the pinion shaft upper bearing, the driving seal, the pinion shaft lower bearing in sequence from top to bottom, and then passes through the lower end of the sealing sleeve to connect with the coupling; the pinion shaft extends out of the upper end of the sealing sleeve to engage with the large gear.

[0026] In the rotary electrowinning device as described above, the anode lower column extends out of a section of the anode nut to form an anode terminal; and the cathode terminal is arranged on the outer side wall of the cathode.

[0027] In the rotary electrowinning device as described above, the diameters of the upper and lower cathode flanges are equal to the outer diameter of the upper end cover body.

[0028] Compared with the prior art, the rotary electrowinning equipment of the present invention is designed with a rotary bracket between the cathode and cathode, and a rotary roller is installed on the rotary bracket. When the rotary bracket rotates around the central axis of the anode, it drives the rotary roller to rotate around the central axis of the anode. Under the action of the small springs of the upper and lower plates, the rotary roller is properly and fully fitted on the surface of the cathode lining, and rolls evenly on the surface of the cathode lining. The rotary roller is in full contact with the surface of the cathode lining, and the concentration polarization and electrochemistry of the cathode surface are mechanically destroyed; under the continuous rolling of the rotary roller, the cathode surface is unlikely to grow burrs and burrs. Even if it grows, it will be mechanically destroyed and smoothed under the continuous rolling of the rotary roller.

[0029] As described above, the rotary electrowinning device of the present invention has the following beneficial effects during electrowinning:

[0030] First, during electrolysis, the concentration polarization and chemical polarization on the cathode surface are effectively destroyed, thereby improving the current efficiency.

[0031] Secondly, the defects of cathode deposited metal such as burrs, long slippage and rough inner surface of deposited metal are completely solved.

[0032] Third, it completely solves the problem of anode burning caused by burrs and slippage of cathode deposited metal, because the price of titanium-based layer anode is very expensive.

[0033] Fourth, the deposited metal has high purity, good toughness, smooth inner and outer surfaces and beautiful appearance.

[0034] Fifth, because a large flow rate is not required to destroy the concentration polarization and chemical polarization on the cathode surface, the system circulation flow rate is very small, which is 1 / 80 or even smaller than the flow rate of the cyclone electrolysis system. Even a circulation pump is not required, and the circulation flow rate can be provided by the gravity flow of the raw liquid in the high-level box, which greatly saves the energy consumption of the circulation pump and reduces the investment cost.

[0035] Sixth, because the electrolytic system does not require a large flow rate and the circulation flow rate of the electrolytic solution is very small during electrolytic deposition, the diameter and length of a single electrode column can be made very large, which increases the output of a single electrode column several times, thereby reducing the system investment cost and operating cost.

[0036] Seventh, less or no additives are used to improve the inner surface finish of the electrolytic metal and prevent thorns, slag inclusions, etc., which saves costs and avoids the contamination of the electrolytic fluid due to the addition of additives, bringing great benefits to the recycling and treatment of the electrolytic fluid.

[0037] Eighth, the system runs very stably, the operating cost is greatly reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0039] Figure 1 This is a schematic diagram of the structure of the prior art cyclone electrowinning equipment (a in the figure refers to the direction of metal ion movement; b refers to the direction of liquid flow rotation.)

[0040] Figure 2 It is a schematic diagram of the three-dimensional structure of the rotary electrowinning device of the present invention;

[0041] Figure 3 yes Figure 2 A schematic diagram of the structure of part A;

[0042] Figure 4 It is a schematic cross-sectional view of the rotary electrowinning device of the present invention;

[0043] Figure 5 yes Figure 4 Schematic diagram of the structure of part B;

[0044] Figure 6 yes Figure 4 Schematic diagram of the C part structure;

[0045] Figure 7 It is a three-dimensional structural schematic diagram of the driving part of the present invention;

[0046] Figure 8 It is a schematic cross-sectional structural diagram of the driving part of the present invention;

[0047] Fig. 9 It is a schematic diagram of the main structure of the swivel bracket of the present invention;

[0048] Fig.10 It is a schematic diagram of the three-dimensional structure of the swivel bracket of the present invention;

[0049] Fig.11 It is a schematic cross-sectional structural diagram of a large gear of the present invention;

[0050] Fig.12 It is a schematic cross-sectional structural diagram of the lower end cover of the present invention;

[0051] Fig.13 It is a schematic diagram of the top view of the structure of the lower end cover of the present invention. DETAILED DESCRIPTION

[0052] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0053] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0054] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0055] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0056] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0057] See also Figures 2 to 6 , illustrating the rotary electrowinning device of the present invention, including a driving part 100, a rotary support 200, a rotary roller 300, a cathode 400, an anode 500, a cathode liner 600, a large gear 700, an upper end cover 800 and a lower end cover 900.

[0058] The driving part 100 of the present invention comprises a driving motor 110, a coupling 120, a pinion shaft lower bearing 130, a sealing sleeve 140, a driving seal 150, a pinion shaft upper bearing 160, a pinion shaft 170 and a driving part bracket 180. The driving motor 110 is fixed on the driving part bracket 180 and drives the pinion shaft 170 through the coupling 120; the pinion shaft 170 is inserted into the sealing sleeve 140, and the pinion shaft lower bearing 130, the sealing sleeve 140 and the pinion shaft upper bearing 160 are installed in the sealing sleeve 140.

[0059] Please combine Figure 7 and Figure 8 As shown, the driving motor 110 is fixedly connected to the driving part bracket 180 by screws, and the pinion shaft 170 is connected to the driving motor 110 by a coupling 120 to drive the pinion shaft 170 through the coupling 120.

[0060] The sealing sleeve 140 is cylindrical with a through hole in the middle, and is composed of an upper sealing sleeve 141 and a lower sealing sleeve 142 which are screwed together. The upper sealing sleeve 141 is provided with an external screw thread, which is screwed into the pinion mounting screw hole 920 of the lower end cover 900, so that the sealing sleeve 140 is fixedly mounted on the lower end cover 900. The sealing sleeve 140 is provided with a pinion shaft upper bearing 160 and a pinion lower bearing 130, and a driving seal 150 is provided between the pinion shaft upper bearing 160 and the pinion lower bearing 130.

[0061] The pinion shaft 170 passes through the pinion shaft upper bearing 16, the driving seal 150, and the pinion shaft lower bearing 130 in sequence from top to bottom, and then passes through the lower end of the sealing sleeve 140 to connect with the coupling 120; the pinion shaft 170 extends out of the upper end of the sealing sleeve 140 to form a pinion shaft tooth portion 171 to mesh with the large gear teeth 710 of the large gear 700, thereby realizing the meshing transmission between the pinion shaft 170 and the large gear 700.

[0062] The driving part bracket 180 is fixedly connected to the lower end cover 900 by screws, so that the driving part 180 and the lower end cover 900 are connected as a whole.

[0063] Please combine Fig. 9 and Fig.10As shown, the swivel bracket 200 of the present invention is made of modified PPO and is arranged between the anode 500 and the cathode 400. The swivel bracket 200 includes a swivel bracket upper plate 210, a swivel bracket lower plate 220, and a plurality of swivel support rods 230, and the plurality of swivel support rods 230 are evenly distributed between the swivel bracket upper plate 210 and the swivel bracket lower plate 220 to form a mesh structure. Two symmetrical upper swivel roller bearing grooves 211 are arranged on both sides of the swivel bracket upper plate 210, and each upper swivel roller bearing groove 211 is equipped with an upper plate small spring 240 and an upper swivel roller bearing 260, and the upper plate small spring 240 is pressed between the groove wall of the upper swivel roller bearing groove 211 and the upper swivel roller bearing 260; and a swivel bracket upper plate hole 212 is arranged at the center of the swivel bracket upper plate 210, and a swivel bracket bearing seat 213 is arranged in the swivel bracket upper plate hole 212. Two symmetrical lower rotating roller bearing grooves 221 are provided on both sides of the lower plate 220 of the rotating bracket, and each lower rotating roller bearing groove 221 is equipped with a lower plate small spring 250 and a lower rotating roller bearing 270, and the lower plate small spring 250 is pressed between the groove wall of the lower rotating roller bearing groove 221 and the lower rotating roller bearing 270; and a bracket mounting through hole 222 is provided at the center of the lower plate 220 of the rotating bracket, and an internal thread 223 is provided at the lower end portion of the bracket rotating through hole 222 to cooperate with the large gear external thread portion 720 of the large gear 700, and is screwed on the large gear 700 to realize the fixed connection between the rotating bracket 200 and the large gear 700.

[0064] Please combine Fig.11 As shown, the large gear 700 of the present invention is made of modified PPO and is rotatably mounted on the anode lower positioning column 950 of the lower end cover 900. Specifically, the large gear 700 is rotatably mounted on the anode lower positioning column 950 through the large gear inner bearing 750 in the upper and lower large gear bearing seats 730 and 740 provided in the central through hole. And the large gear external threaded portion 720 provided on the outer edge of the upper end of the large gear 700 is screwed into the bracket mounting through hole 222 of the swivel bracket 200. The large gear teeth 710 are formed on the outer edge of the lower end of the large gear 700 to mesh with the pinion shaft teeth 171 of the pinion shaft 170.

[0065] Please combine Fig.12 and Fig.13As shown, the lower end cover 900 of the present invention is made of modified PPO. The lower end cover 900 is provided with a liquid inlet hole 910 on the side wall; a pinion mounting screw hole 920 is provided on the bottom end surface; a lower end cover sealing groove 930 is provided on the upper end surface; and a lower end cover blocking protrusion 940 is convexly provided on the upper end surface to support the cathode liner 600; an anode lower positioning column 950 is provided at the center of the lower end cover 900, and the central axis of the anode lower positioning column 950 is coaxial with the central axis of the anode 500, the large gear 700 is rotatably arranged on the anode lower positioning column 950 through the bearings provided on the upper and lower large gear bearing seats 730 and 740, and the swivel bracket lower plate 220 screwed and fixed to the large gear drives the swivel bracket 200 to be rotatably arranged on the anode lower positioning column 950. The anode lower positioning column 950 has an anode lower positioning hole 960, the central axis of which is coaxial with the central axis of the anode 500; an anode lower sealing groove 970 is provided on the upper end surface of the anode lower positioning column 950. A plurality of lower end cover screw holes 980 are also provided on the upper end surface of the lower end cover 900, so that the lower end cover 900 and the lower cathode flange 420 are sealed and fixedly connected through a plurality of corresponding lower end cover bolts 990.

[0066] Please combine Figure 2 and Figure 6 As shown, the upper end cover 800 of the present invention is placed above the lower end cover 900, and includes an upper end cover body 810 and an upper end cover cap 820. The upper end cover body 810 and the upper end cover cap 820 are both made of modified PPO, and the upper end cover cap 820 is screwed onto the upper end cover body 810.

[0067] Specifically, the upper end cap 820 is provided with multiple internal threads 821 on the inner wall, and an anode upper positioning column 822 is provided in the middle. The anode upper positioning column 822 has an anode upper positioning hole 823, and the central axis of the anode upper positioning hole 823 is coaxial with the central axis of the anode 500.

[0068] The upper end cover body 810 is provided with a liquid outlet 814 on the side wall, an upper end cover upper sealing groove 811 is provided on the upper end surface, and an upper end cover lower sealing groove 812 is provided on the lower end surface. The upper end cover upper sealing groove 811 and the upper end cover lower sealing groove 812 are both provided with sealing rings for sealing; and a multi-head external thread 813 is provided at the top end of the upper end cover body 810 to match the multi-head internal thread 821 of the upper end cover cap 820, so that the upper end cover body 810 and the upper end cover cap 820 are screwed together. The screwed upper end cover body 810 and the upper end cover cap 820 form a sealed connection through the sealing ring in the upper sealing groove 811. The upper end cover body 810 is also provided with a plurality of upper end cover screw holes 815 on the lower end surface, wherein embedded nuts are provided, so that the upper end cover body 810 and the upper cathode flange 410 are sealed and fixedly connected through a plurality of upper end cover bolts 830 provided corresponding to the embedded nuts.

[0069] Please combine Figures 4 to 6 As shown, the rotary roller 300 of the present invention is made of modified PPO. The upper and lower ends of the rotary roller 300 are respectively provided with a rotary roller upper positioning rod 310 and a rotary roller lower positioning rod 320, and the rotary roller upper positioning rod 310 and the rotary roller lower positioning rod 320 are respectively tightly fitted on the upper rotary roller bearing 260 and the lower rotary roller bearing 270. The upper plate small spring 240 and the lower plate small spring 250 respectively generate thrusts on the upper rotary roller bearing 260 and the lower rotary roller bearing 270, so that the rotary roller 300 is fully and completely fitted with the metal surface deposited on the cathode liner 600.

[0070] The anode 500 of the present invention is a titanium-based insoluble anode. The upper and lower ends of the anode 500 are respectively provided with an anode upper column 510 and an anode lower column 520 protruding upward and downward along the central axis of the anode 500. The anode upper column 510 and the anode lower column 520 are respectively inserted into the anode upper positioning hole 823 and the anode lower positioning hole 960, so that the anode 500 is fixed between the upper end cover 800 and the lower end cover 900.

[0071] Specifically, the anode upper column 510 passes through a cathode liner pressure ring 440 and a swivel bracket upper plate hole 212 provided on the swivel bracket upper plate 210 from bottom to top, and is inserted into the anode upper positioning hole 823. The swivel bracket upper plate 210 drives the swivel bracket 200 to rotate on the anode upper column 510 through the swivel bracket upper bearing 214 on the swivel bracket bearing seat 213.

[0072] The cathode liner pressing ring 440 disposed between the upper end surface of the anode 500 and the lower end surface of the rotating bracket upper plate 210 is tightly fitted in the bottom end of the upper end cover body 810 and extends into the cathode 400 to be tightly fitted with the cathode liner 600.

[0073] The anode lower column 520 is inserted into the anode lower positioning hole 960 of the lower end cover 900, and the lower end surface of the anode 500 is against the upper end surface of the anode lower positioning column 950, and the anode 500 is sealed from the outside through the sealing ring in the anode lower sealing groove 970 provided on the anode lower positioning column 950. The portion of the anode lower column 530 extending out of the anode lower positioning hole 960 is provided with an external thread, and the anode upper column 520 is fixedly and sealedly connected to the lower end cover 900 through an anode nut 540; and a section of the anode lower column 530 extending out of the anode nut 540 forms an anode terminal 521.

[0074] The cathode 400 of the present invention is made of SUS316L stainless steel. The upper and lower ends of the cathode 400 are respectively provided with upper and lower cathode flanges 410 and 420 of the same specifications. In this embodiment, the upper cathode flange 410 corresponds to the upper end cover screw hole 815 provided on the upper end cover body 810, and is provided with eight upper mounting screw holes, and the corresponding eight upper end cover bolts 830 are provided to screw the upper cathode flange 410 and the upper end cover 800; a sealing ring is provided in the upper end cover sealing groove 811 of the upper end cover body 810, which plays a role in sealing and fixing the screwed upper cathode flange 410 and the upper end cover 800. The lower cathode flange 42 is provided with eight lower end cover screw holes 980 corresponding to the lower end cover 900, and the corresponding eight lower end cover bolts 990 are used to screw the lower cathode flange 420 and the lower end cover 900 together; a sealing ring is provided in the lower end cover sealing groove 930 of the lower end cover 900, which plays a role in sealing and fixing the screwed lower cathode flange 420 and the lower end cover 900. The diameters of the upper and lower cathode flanges 410, 420 of the present invention are equal to the outer diameter of the upper end cover body 810. The cathode terminal 450 is provided on the outer side wall of the cathode 400.

[0075] The cathode liner 600 of the present invention is made of stainless steel SUS316 material. The upper end of the cathode liner 600 is inserted between the cathode liner pressing ring 440 and the cathode 400, and the lower end of the cathode liner 600 is inserted between the cathode 400 and the lower end cover 900. Specifically, the lower end of the cathode liner 600 is inserted between the inner wall of the cathode 400 and the lower end cover stop 940 of the lower end cover 900. Under the action of the natural tension of the cathode liner pressing ring 440 and the cathode liner 600, the cathode liner 600 is tightly attached to the inner wall of the cathode 400. The length of the cathode liner 600 in this embodiment is equal to the distance between the upper and lower cathode flanges 410 and 420.

[0076] When the rotary electrowinning device of the present invention is assembled, the anode lower column 520 of the anode 500 is inserted into the hole of the anode lower positioning hole 960 on the lower end cover 900, and is fixedly sealed and connected with the lower end cover 900 by the anode nut 530. A sealing ring is installed in the anode lower sealing groove 970 to seal the anode 500 from the outside. The anode upper column 510 of the anode 500 is inserted into the anode upper positioning hole 823 of the upper end cap 820 to ensure that the anode 500 and the cathode 400 are concentric. The large gear 700 is installed on the anode lower positioning column 950 through the large gear inner bearing 750 of the central through hole, and the large gear 700 can only rotate around the anode lower positioning column 950.

[0077] The swivel bracket 200 is screwed and fixed with the outer threaded portion 720 of the large gear 700 through the internal thread 223 of the bracket swivel through hole 222. The swivel bracket 200 is connected with the anode upper column 510 of the anode 500 through the swivel bracket upper bearing 214 installed on the swivel bracket 200. The swivel bracket 200 is concentric with the anode 500 and can rotate around the central axis of the anode 500.

[0078] The positive pole of the DC power supply is connected to the anode terminal 521, and the negative pole is connected to the cathode terminal 450. The electrodeposition liquid can pass through the liquid inlet hole 910 at a certain flow rate through the circulation tank, circulation pump or high-level box. The liquid containing metal ions flows through the annular cavity of the anode 500 and the cathode lining 600, is stirred by the rotating bracket 200 rotating around the central axis of the anode 500, and then flows out of the rotary electrodeposition equipment through the liquid outlet hole 814 of the upper end cover 800 and returns to the circulation tank, forming a reflux, so that the metal ions are continuously reduced and deposited on the cathode lining 600. When the driving motor 110 is powered on and running, the small gear shaft 170 is driven to rotate through the coupling 120, and the large gear teeth 710 of the large gear 700 are driven through the small gear shaft teeth 171 on the small gear shaft 170, thereby driving the large gear 700 to rotate, and the large gear 700 and the rotating bracket 200 are fixedly screwed through the large gear external thread 720 and the internal thread 223 of the bracket rotating through hole 222, so that the rotating bracket 200 rotates around the central axis of the anode 500, and the rotating roller 300 also rotates around the anode 500 along with the rotating bracket 200. The central axis rotates, and the upper and lower plate small springs 240 and 250 push the upper and lower rotating roller bearings 260 and 270, so that the rotating roller 300 is fully and completely attached to the surface of the cathode liner 600. Under the friction of the cathode liner 600, the rotating roller 300 rotates around its own central axis, so the rotating roller 300 rolls against the surface of the cathode liner 600, thereby mechanically destroying the concentration polarization and electrochemical polarization of the metal surface concentrated on the surface of the cathode liner 600, so that the metal is easily concentrated on the surface of the cathode liner 600. Secondly, due to the rotation of the rotating bracket 200, it has a good stirring effect on the electrolytic stock solution.

[0079] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. Rotary electrowinning equipment, characterized in that: It comprises a driving part (100), a rotating support (200), a rotating roller (300), a cathode (400), an anode (500), a cathode liner (600), a large gear (700), an upper end cover (800) and a lower end cover (900); wherein, The driving part (100) comprises a driving motor (110), a coupling (120), a sealing sleeve (140), a pinion shaft (170) and a driving part bracket (180); the driving motor (110) is fixed on the driving part bracket (180), and the driving part bracket (180) is fixedly connected to the lower end cover (900); the pinion shaft (170) is inserted into the sealing sleeve (140); the lower end of the pinion shaft (170) passing through the sealing sleeve (140) is connected to the driving motor (110) through the coupling (120), and the upper end extending out of the sealing sleeve (140) is engaged with the large gear (700); the sealing sleeve (140) is fixedly mounted on the lower end cover (900); A swivel bracket (200) is arranged between the anode (500) and the cathode (400); it comprises a swivel bracket upper plate (210), a swivel bracket lower plate (220), and a plurality of swivel support rods (230) to form a mesh structure; upper plate small springs (240) and upper swivel roller bearings (260) are installed in upper swivel roller bearing grooves (211) on both sides of the swivel bracket upper plate (210); lower plate small springs (250) and lower swivel roller bearings (270) are installed in lower swivel roller bearing grooves (221) on both sides of the swivel bracket lower plate (220); A large gear (700) is rotatably disposed on the anode lower positioning column (950) of the lower end cover (900); and the large gear (700) is screwed to the swivel bracket lower plate (220); The lower end cover (900) is provided with an anode lower positioning column (950) at the center, the anode lower positioning column (950) has an anode lower positioning hole (960), and the upper end surface of the anode lower positioning column (950) is provided with an anode lower sealing groove (970); the upper end surface of the lower end cover (900) is provided with a lower end cover sealing groove (930) around the lower end surface; and the side wall of the lower end cover (900) is provided with a liquid inlet hole (910); The upper end cover (800) comprises an upper end cover body (810) and an upper end cover cap (820); the upper end cover cap (820) is screwed onto the upper end cover body (810); an anode upper positioning column (822) is provided in the middle of the upper end cover cap (820); the anode upper positioning column (822) has an anode upper positioning hole (823); an upper end cover upper sealing groove (811) is provided on the upper end surface of the upper end cover body (810), an upper end cover lower sealing groove (812) is provided on the lower end surface, and a liquid outlet hole (814) is provided on the side wall; The upper and lower ends of the rotary roller (300) are tightly fitted on the upper rotary roller bearing (260) and the lower rotary roller bearing (270) respectively; The anode (500) has an anode upper column (510) and an anode lower column (520) protrudingly disposed at the upper and lower ends thereof; a cathode liner pressing ring (440) is disposed between the upper end surface of the anode (500) and the lower end surface of the upper plate (210) of the swivel bracket; the anode upper column (510) is inserted into the anode upper positioning hole (823); the anode lower column (520) is inserted into the anode lower positioning hole (960), and the lower end surface of the anode (500) is abutted against the upper end surface of the anode lower positioning column (950); the anode lower column (520) is fixedly and sealingly connected to the lower end cover (900) via an anode nut (540); The cathode (400) is provided with upper and lower cathode flanges (410, 420) of the same specification at the upper and lower ends respectively; the upper cathode flange (410) is sealed and fixedly connected to the upper end cover (800); the lower cathode flange (420) is sealed and fixedly connected to the lower end cover (900); The cathode liner (600) has an upper end inserted between the cathode liner pressing ring (440) and the cathode (400), and a lower end inserted between the cathode (400) and the lower end cover (900).

2. The rotary electrowinning device according to claim 1, characterized in that: The rotating bracket (200) is a rotating bracket (200) made of modified PPO, the rotating roller (300) is a rotating roller (300) made of modified PPO, the large gear (700) is a large gear (700) made of modified PPO, and the upper and lower end covers (800, 900) are upper and lower end covers (800, 900) made of modified PPO; and the anode (500) is a titanium-based insoluble anode; the cathode (400) is a cathode made of SUS316L stainless steel; and the cathode lining (600) is a cathode lining made of stainless steel SUS316 material.

3. The rotary electrowinning device according to claim 1 or 2, characterized in that: The sealing sleeve (140) is provided with a pinion shaft upper bearing (160) and a pinion shaft lower bearing (130) therein, and a driving seal (150) is provided between the pinion shaft upper bearing (160) and the pinion shaft lower bearing (130); the pinion shaft (170) passes through the pinion shaft upper bearing (160), the driving seal (150), and the pinion shaft lower bearing (130) in order from top to bottom, and then passes through the lower end of the sealing sleeve (140) to connect with the coupling (120); the pinion shaft (170) extends out of the upper end of the sealing sleeve (140) to mesh with the large gear (700).

4. The rotary electrowinning device according to claim 1 or 2, characterized in that: The anode lower column (520) extends out of a section of the anode nut (540) to form an anode terminal post (521); the cathode terminal post (450) is arranged on the outer side wall of the cathode (400).

5. The rotary electrowinning device according to claim 1 or 2, characterized in that: The diameters of the upper and lower cathode flanges (410, 420) are equal to the outer diameter of the upper end cover body (810).

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