Filtering device in silver electrolysis equipment

Abstract

The utility model belongs to the technical field of silver electrolysis recovery, and particularly relates to a filtering device in silver electrolysis equipment, which comprises an electrolytic bath, a filtering box and a purifying box, the purifying box is internally provided with a purifying device, and the filtering box is internally provided with a filtering device. According to the filtering device in the silver electrolysis equipment, a centrifugal motor is started to drive a rotating shaft to rotate in a fixed bearing, so that a centrifugal barrel is driven to rotate in a filtering box, electrolyte and silver powder are centrifugally separated and filtered through filtering dense holes formed in the outer surface of the centrifugal barrel, and silver oxide is added into the electrolyte in a purifying box through a dosing hopper; then, a stirring motor is started to drive a stirring shaft to rotate in a bearing, so that a stirring plate outside the stirring shaft is driven to rotate, silver oxide and the electrolyte are promoted to be subjected to a full mixing reaction, impurities such as bismuth, antimony, lead, copper and iron in the electrolyte are completely separated out, and nitric acid is added into the purified electrolyte through a dosing hopper to adjust the acidity.

Description

Technical Field

[0001] The utility model relates to the technical field of silver electrolysis recovery, in particular to a filtering device in silver electrolysis equipment. Background Art

[0002] In the silver electrolysis process for precious metal smelting, silver powder will contain a certain amount of silver nitrate electrolyte during the electrolysis process. To ensure the quality of the silver powder product, the electrolyzed silver powder must be washed. Currently, in the precious metal smelting industry, silver powder washing mainly relies on manual labor. That is, the silver powder after the tank is placed in a washing tank, injected with distilled water to soak, manually stirred, and repeatedly washed until the silver powder washing water is neutral. In addition, the amount of washing water used is large, which not only increases the work of sodium chloride precipitation of silver and causes a large loss of valuable metals, but also generates a large amount of washing water entering the purification system, increasing wastewater treatment costs. Therefore, traditional manual labor has disadvantages such as low production efficiency, high labor intensity, high loss of valuable metal silver, and large amount of washing water consumption. It is no longer suitable for the needs of modern production.

[0003] For example, Chinese Patent Publication No. CN215388073U discloses a filtration device for silver electrolysis equipment. When used, it utilizes a centrifugal device to significantly improve filtration and separation efficiency, significantly reducing the moisture content of silver powder, saving drying time, and reducing energy consumption. This utility model allows for recycling of the electrolytic mother liquor, significantly reducing metal loss. The combination of a centrifugal dehydration device and a heating and drying device eliminates the need for an additional set of equipment, reduces operating and maintenance costs, and improves production efficiency. Once filtration and drying are complete, the connecting pipe is opened and the cylindrical filter removed, allowing for quick and convenient access to the material. This process eliminates impurities from contaminating the product, further facilitating production.

[0004] However, the filtering device in the silver electrolysis equipment in the above application often contains certain impurities in the filtered electrolyte. In order to ensure the electrolysis effect of the recovered electrolyte, it needs to be purified. Therefore, there are certain limitations.

[0005] For this reason, we urgently need to provide a filtering device in a silver electrolysis device. Utility Model Content

[0006] The purpose of the utility model is to provide a filtering device in a silver electrolysis device to solve the problem that the filtering device in the silver electrolysis device proposed in the above background art often contains certain impurities in the filtered electrolyte. In order to ensure the electrolysis effect of the recovered electrolyte, it is necessary to purify it.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a filtering device in a silver electrolysis device, comprising an electrolytic cell, a filter box and a purification box, wherein the filter box is installed below the electrolytic cell, the purification box is installed below the filter box, a purification device is provided inside the purification box, and a filtering device is provided inside the filter box.

[0008] The purification device includes a stirring unit and a reflux unit. The stirring unit is installed inside the purification box, and the reflux unit is installed on the right side of the purification box.

[0009] The stirring unit includes a stirring motor, a stirring shaft, a stirring plate, and a dosing hopper. The stirring motor is installed on the left outer surface of the purification box. The stirring shaft is connected to the output end of the stirring motor and extends to the interior of the purification box. Three groups of stirring plates are fixedly connected to the outer surface of the stirring shaft at equal distances. The dosing hopper is fixedly connected to the front top of the purification box. Silver oxide is added to the electrolyte inside the purification box through the dosing hopper. Then, the stirring motor is started to drive the stirring shaft to rotate inside the bearing, thereby driving the stirring plate outside the stirring shaft to rotate, prompting the silver oxide to fully mix and react with the electrolyte, thereby completely precipitating impurities such as bismuth, antimony, lead, copper, and iron in the electrolyte, and then adding nitric acid to the purified electrolyte through the dosing hopper to adjust the acidity.

[0010] A further improvement is that the outer surface of the stirring plate is evenly penetrated with spoiler holes, and the inner bottom of the purification box is a slope structure. The spoiler holes opened on the outer surface of the stirring plate can better cut the water flow during mixing and stirring, thereby improving the mixing efficiency.

[0011] A further improvement is that the reflux unit includes a water pump, a reflux pipe, a drainage pipe, and an electric sealing valve. The water pump is installed on the right side of the purification box, and its suction pipe extends into the interior of the purification box. The reflux pipe is fixedly connected to the water outlet of the water pump, and its top extends into the interior of the electrolytic cell. The drainage pipe is fixedly connected to the bottom of the right outer surface of the purification box, and the electric sealing valve is installed on the outer surface of the drainage pipe. The water pump is started to pump the purified electrolyte inside the purification box into the interior of the reflux pipe, and finally it flows back into the interior of the electrolytic cell. Then the electric sealing valve is started to discharge the precipitated substances through the drainage pipe.

[0012] A further improvement is that the filtering device includes a liquid injection unit and a centrifugal unit.

[0013] The injection unit includes a centrifugal cylinder, a rotary bearing, a discharge pipe, and a collection pipe. The centrifugal cylinder is installed inside the filter box, the rotary bearing is installed at the top center of the centrifugal cylinder, the discharge pipe is fixedly connected to the bottom center of the electrolytic cell and extends into the interior of the rotary bearing. The four collection pipes are respectively threadedly connected to the four corners of the bottom of the centrifugal cylinder.

[0014] Further improvement lies in that the outer surface and bottom of the centrifugal cylinder and the outer surface of the aggregate pipe are evenly provided with filter holes respectively, and the outer surface of the discharge pipe is also provided with an electric sealing valve.

[0015] Further improvement lies in that the centrifugal unit comprises a centrifugal motor, a fixed bearing and a rotating shaft, the centrifugal motor is installed at the top center of the purification box, the fixed bearing is installed at the bottom center of the filter box, the rotating shaft is connected to the output end of the centrifugal motor and rotatably connected to the inside of the fixed bearing, and the top of the rotating shaft is connected to the bottom of the centrifugal cylinder.

[0016] Further improvement lies in that the bottom of the filter box is fixedly connected with connecting pipes at four corners respectively, the bottom of the connecting pipe extends into the inside of the purification box, the sealing box door is hinged below the front surface of the filter box, the electric sealing valve on the discharge pipe is started to discharge the electrolyte mixed with silver powder into the inside of the centrifugal cylinder, then the centrifugal motor is started to drive the rotating shaft to rotate in the inside of the fixed bearing, so as to drive the centrifugal cylinder to rotate in the inside of the filter box, the electrolyte and silver powder are centrifugally separated through the filter holes on the outer surface of the centrifugal cylinder, the separated silver powder falls into the inside of the aggregate pipe, and the aggregate pipe can be regularly screwed out to take out the silver powder, and the electrolyte centrifugally separated is collected into the inside of the purification box through the connecting pipes for purification treatment.

[0017] Compared with the prior art, the silver electrolysis equipment has the following beneficial effects:

[0018] 1. The filter device in the silver electrolysis equipment, the centrifugal motor is started to drive the rotating shaft to rotate in the inside of the fixed bearing, so as to drive the centrifugal cylinder to rotate in the inside of the filter box, and the electrolyte and silver powder are centrifugally separated and filtered through the filter holes on the outer surface of the centrifugal cylinder.

[0019] 2. The filter device in the silver electrolysis equipment, silver oxide is added to the electrolyte in the inside of the purification box through the dosing hopper, then the stirring motor is started to drive the stirring shaft to rotate in the inside of the bearing, so as to drive the stirring plate outside the stirring shaft to rotate, and the silver oxide is fully mixed with the electrolyte, so that the impurities such as bismuth, antimony, lead, copper and iron in the electrolyte are all precipitated, and then nitric acid is added to the purified electrolyte through the dosing hopper to adjust the acidity. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the utility model;

[0021] Figure 2 It is a side view structural schematic diagram of the utility model;

[0022] Figure 3 It is a purification device independent sectional view internal structure schematic diagram of the utility model;

[0023] Figure 4This is a schematic diagram of the independent sectional and disassembled structure of the filtering device of the present invention.

[0024] In the figure: 1. electrolytic cell; 2. filter box; 3. purification box; 401. stirring motor; 402. stirring shaft; 403. stirring plate; 404. dosing hopper; 405. water pump; 406. reflux pipe; 407. drainage pipe; 408. electric sealing valve; 501. centrifuge cylinder; 502. rotating bearing; 503. discharge pipe; 504. collecting pipe; 505. centrifugal motor; 506. fixed bearing; 507. rotating shaft; 508. connecting pipe; 509. sealing box door. DETAILED DESCRIPTION

[0025] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1-4 , the utility model provides a technical solution:

[0027] Example 1:

[0028] A filtering device in silver electrolysis equipment includes an electrolytic cell 1, a filter box 2 and a purification box 3. The filter box 2 is installed below the electrolytic cell 1, and the purification box 3 is installed below the filter box 2. A purification device is provided inside the purification box 3, and a filtering device is provided inside the filter box 2.

[0029] The purification device includes a reflux unit, which is installed on the right side of the purification box 3.

[0030] The reflux unit includes a water pump 405, a reflux pipe 406, a drainage pipe 407, and an electric sealing valve 408. The water pump 405 is installed on the right side of the purification box 3, and its water pumping pipe extends into the interior of the purification box 3. The reflux pipe 406 is fixedly connected to the water outlet of the water pump 405, and its top extends into the interior of the electrolytic cell 1. The drainage pipe 407 is fixedly connected to the bottom of the right outer surface of the purification box 3, and the electric sealing valve 408 is installed on the outer surface of the drainage pipe 407. Start the water pump 405 to pump the purified electrolyte inside the purification box 3 into the interior of the reflux pipe 406, and finally return it to the interior of the electrolytic cell 1. Then start the electric sealing valve 408 to discharge the precipitated substances through the drainage pipe 407.

[0031] The filtering device includes a liquid injection unit and a centrifugal unit.

[0032] The liquid injection unit includes a centrifugal cylinder 501, a rotating bearing 502, a discharge pipe 503, and a collecting pipe 504. The centrifugal cylinder 501 is installed inside the filter box 2, the rotating bearing 502 is installed at the top center of the centrifugal cylinder 501, the discharge pipe 503 is fixedly connected to the bottom center of the electrolytic cell 1 and extends into the interior of the rotating bearing 502. The four collecting pipes 504 are respectively threadedly connected to the four corners of the bottom of the centrifugal cylinder 501.

[0033] The outer surface and bottom of the centrifugal cylinder 501 and the outer surface of the collecting pipe 504 are evenly penetrated with filtering holes, and the outer surface of the discharge pipe 503 is also installed with an electric sealing valve 408.

[0034] The centrifugal unit includes a centrifugal motor 505, a fixed bearing 506, and a rotating shaft 507. The centrifugal motor 505 is installed at the top center of the purification box 3, and the fixed bearing 506 is installed at the bottom center of the filter box 2. The rotating shaft 507 is connected to the output end of the centrifugal motor 505 and is rotatably connected to the inside of the fixed bearing 506. Its top is connected to the bottom of the centrifugal cylinder 501.

[0035] The four corners of the bottom of the filter box 2 are fixedly connected with connecting pipes 508, and the bottom of the connecting pipes 508 extends into the interior of the purification box 3. The sealed box door 509 is hinged at the bottom front of the filter box 2. The electric sealing valve 408 on the discharge pipe 503 is started to discharge the electrolyte mixed with silver powder into the interior of the centrifugal cylinder 501. Then the centrifugal motor 505 is started to drive the rotating shaft 507 to rotate inside the fixed bearing 506, thereby driving the centrifugal cylinder 501 to rotate inside the filter box 2. The electrolyte and silver powder are centrifugally separated through the dense filtering holes opened on the outer surface of the centrifugal cylinder 501. The separated silver powder falls into the interior of the collecting pipe 504. The collecting pipe 504 can be unscrewed regularly to take out the material, and the electrolyte centrifugally thrown out is collected into the interior of the purification box 3 through the connecting pipe 508 for purification.

[0036] Example 2:

[0037] Based on Example 1, the purification device includes a stirring unit, which is installed inside the purification box 3. The stirring unit includes a stirring motor 401, a stirring shaft 402, a stirring plate 403, and a dosing hopper 404. The stirring motor 401 is installed on the left outer surface of the purification box 3. The stirring shaft 402 is connected to the output end of the stirring motor 401 and extends to the interior of the purification box 3. Three groups of stirring plates 403 are equidistantly fixedly connected to the outer surface of the stirring shaft 402, and the dosing hopper 404 is fixedly connected to the front top of the purification box 3.

[0038] The silver oxide is added to the electrolyte in the purification tank 3 through the charging hopper 404, and then the stirring motor 401 is started to drive the stirring shaft 402 to rotate in the bearing, so as to drive the stirring plate 403 outside the stirring shaft 402 to rotate, so as to promote the silver oxide and the electrolyte to fully mix and react, so as to precipitate all the impurities such as bismuth, antimony, lead, copper and iron in the electrolyte, and then the purified electrolyte is added with nitric acid through the charging hopper 404 to adjust the acidity.

[0039] The outer surface of the stirring plate 403 is uniformly provided with the turbulence holes, and the bottom of the inside of the purification tank 3 is provided with a slope structure, so that the turbulence holes on the outer surface of the stirring plate 403 can better cut the water flow during mixing and stirring, and improve the mixing efficiency.

[0040] It should be noted that in this text, the relationship terms such as first and second 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 the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

Claims

1. A filtering device in a silver electrolysis device, comprising an electrolytic cell (1), a filter box (2) and a purification box (3), wherein the filter box (2) is installed below the electrolytic cell (1), and the purification box (3) is installed below the filter box (2), characterized in that: The purification box (3) is provided with a purification device inside, and the filter box (2) is provided with a filtering device inside; The purification device comprises a stirring unit and a reflux unit, wherein the stirring unit is installed inside the purification box (3) and the reflux unit is installed on the right side of the purification box (3); The stirring unit comprises a stirring motor (401), a stirring shaft (402), a stirring plate (403), and a dosing hopper (404); the stirring motor (401) is mounted on the left outer surface of the purification box (3); the stirring shaft (402) is connected to the output end of the stirring motor (401) and extends into the interior of the purification box (3); three groups of stirring plates (403) are fixedly connected to the outer surface of the stirring shaft (402) at equal distances; and the dosing hopper (404) is fixedly connected to the front top of the purification box (3); The reflux unit comprises a water pump (405), a reflux pipe (406), a drainage pipe (407), and an electric sealing valve (408). The water pump (405) is installed on the right side of the purification box (3), and its water pumping pipe extends into the interior of the purification box (3). The reflux pipe (406) is fixedly connected to the water outlet of the water pump (405), and its top extends into the interior of the electrolytic cell (1). The drainage pipe (407) is fixedly connected to the bottom of the right outer surface of the purification box (3), and the electric sealing valve (408) is installed on the outer surface of the drainage pipe (407).

2. The filtering device in a silver electrolysis device according to claim 1, characterized in that: The outer surface of the stirring plate (403) is evenly penetrated with flow-turbulating holes, and the inner bottom of the purification box (3) is a slope structure.

3. The filtering device in the silver electrolysis equipment according to claim 1, characterized in that: The filtering device includes a liquid injection unit and a centrifugal unit; The injection unit comprises a centrifugal cylinder (501), a rotary bearing (502), a discharge pipe (503), and a collecting pipe (504); the centrifugal cylinder (501) is installed inside the filter box (2); the rotary bearing (502) is installed at the top center of the centrifugal cylinder (501); the discharge pipe (503) is fixedly connected to the bottom center of the electrolytic cell (1) and extends into the interior of the rotary bearing (502); and the four collecting pipes (504) are respectively threadedly connected to the four corners of the bottom of the centrifugal cylinder (501).

4. The filtering device in a silver electrolysis device according to claim 3, characterized in that: The outer surface and bottom of the centrifugal cylinder (501) and the outer surface of the collecting pipe (504) are uniformly penetrated with filtering holes, and the outer surface of the discharge pipe (503) is also installed with an electric sealing valve (408).

5. The filtering device in the silver electrolysis equipment according to claim 4, characterized in that: The centrifugal unit comprises a centrifugal motor (505), a fixed bearing (506), and a rotating shaft (507). The centrifugal motor (505) is installed at the top center of the purification box (3), and the fixed bearing (506) is installed at the bottom center of the filter box (2). The rotating shaft (507) is connected to the output end of the centrifugal motor (505) and is rotatably connected to the inside of the fixed bearing (506). The top of the rotating shaft is connected to the bottom of the centrifugal cylinder (501).

6. The filtering device in the silver electrolysis equipment according to claim 5, characterized in that: The four corners of the bottom of the filter box (2) are fixedly connected to connecting pipes (508), the bottom of which extends into the interior of the purification box (3), and the sealed box door (509) is hinged at the bottom of the front of the filter box (2).

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