Deep electrolysis device

Abstract

The utility model provides a deep electrolysis device, which relates to the technical field of precious metal recovery, and comprises a machine body, a storage tank, an electrolysis unit and a circulating bin, the machine body and the storage tank are oppositely arranged, and the storage tank is used for storing an electrolysis stock solution; the electrolysis unit is arranged in the machine body and is used for carrying out electrodeposition on metal ions in the electrolysis stock solution entering the electrolysis unit; the circulation bin is arranged in the machine body and comprises a liquid inlet end, a liquid supply end and a liquid return end, the liquid inlet end of the circulation bin is communicated with the storage tank, the liquid supply end and the liquid return end are both communicated with the electrolysis unit, and the liquid supply end, the liquid return end and the electrolysis unit form an internal circulation flow path; and cyclic electrodeposition of metal ions in the electrolytic stock solution is carried out through the internal circulation flow path. According to the utility model, the storage tank is connected with the external waste liquid discharge equipment, the storage tank is used for storing the electrolytic stock solution containing metal, and the electrolytic unit is used for circular treatment, so that uninterrupted waste liquid treatment is realized, and the waste liquid treatment efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of precious metal recycling technology, and in particular to a deep electrolysis device. Background Technology

[0002] In industrial production processes, many processes generate waste liquids containing metals. For example, etching processes produce large amounts of etching solutions containing copper ions, which are highly toxic and contain precious metals. To ensure that the waste liquid meets discharge standards, it needs to be treated and its precious metals recovered. For instance, Chinese patent application CN201420018546.5 discloses a micro-etching solution recovery device, which includes a recovery mechanism, a storage tank, and a circulating water pump. In this scheme, during electrolysis, the circulating water pump drives the micro-etching solution to circulate and electrolyze, while the conductive rod drives the titanium cathode to rotate, enabling the copper ions in the micro-etching solution to fully gain electrons and be reduced. The ruthenium oxide layer has good electrocatalytic performance, while the titanium anode has a large area, which ensures a low current density and can improve the service life of the ruthenium oxide layer. The titanium cathode has a small area, but a high current density, which can greatly improve the efficiency of electrolysis and copper recovery.

[0003] However, the above method can only recover the metal contained in the waste liquid inside the storage tank during electrolysis. It needs to be replaced after the waste liquid is treated, and it is not suitable for large-scale waste liquid recycling operations. Utility Model Content

[0004] In view of this, the present invention proposes a deep electrolysis device, which connects to an external waste liquid discharge device through a storage tank, stores the metal-containing electrolytic raw solution in the storage tank, and performs cyclic processing through the electrolysis unit to achieve uninterrupted waste liquid treatment and improve waste liquid treatment efficiency.

[0005] The technical solution of this utility model is achieved as follows: This utility model provides a deep electrolysis device, including a body, a storage tank, an electrolysis unit, and a circulation chamber, wherein,

[0006] The main body and the storage tank are arranged opposite to each other, and the storage tank is used to store the electrolyte solution;

[0007] The electrolysis unit is located inside the machine body and is used to electrolyze the metal ions in the electrolyte solution that enters the electrolysis unit;

[0008] The circulation chamber is located inside the machine body. The circulation chamber includes an inlet end, a supply end and a return end. The inlet end of the circulation chamber is connected to the storage tank. The supply end and the return end are both connected to the electrolysis unit. The supply end, the return end and the electrolysis unit form an internal circulation flow path. The metal ions in the electrolyte are circulated and electrolyzed through the internal circulation flow path.

[0009] Based on the above technical solutions, preferably, it also includes an external discharge pipeline, which connects to the circulation chamber and extends to the outside of the machine body.

[0010] More preferably, the external discharge pipeline includes an external return pipe and a discharge pipe, wherein,

[0011] The external return pipe is connected to the storage tank and is used to transfer the electrolyte in the circulation chamber to the storage tank;

[0012] The discharge pipe is connected to an external waste liquid collection device, which is used to discharge the waste liquid after electrolysis of the electrolyte in the circulation chamber to the external waste liquid collection device.

[0013] A further preferred embodiment includes a liquid collection pipe, wherein a liquid collection tank is provided inside the machine body, the liquid collection tank is used to collect the electrolyte solution leaking from inside the machine body, and the liquid collection pipe extends into the liquid collection tank and is connected to an external discharge pipeline.

[0014] Based on the above technical solutions, preferably, the number of electrolysis units is multiple, and all of them are arranged inside the machine body, and all of the electrolysis units are connected to the circulation chamber.

[0015] More preferably, the internal circulation path further includes an internal liquid supply pipeline, which connects the liquid supply end of the circulation chamber to each electrolysis unit.

[0016] More preferably, the internal circulation path further includes an internal return pipeline, which connects the return end of the circulation chamber to each electrolysis unit.

[0017] Based on the above technical solutions, preferably, it also includes a venting pipeline, which is connected to the bottom of the electrolysis unit and connected to the circulation chamber. The venting pipeline is used to drain the electrolyte inside the electrolysis unit.

[0018] Based on the above technical solutions, preferably, it also includes a pressure-holding pipeline, which is connected to the circulation chamber and is used to introduce inert gas into the circulation chamber to balance the pressure inside the circulation chamber.

[0019] The deep electrolysis device of this invention has the following advantages over the prior art:

[0020] (1) By setting up a circulation chamber, a portion of the electrolyte is separated from the storage tank and the electrolyte is continuously circulated from the supply end to the electrolysis unit and then returned to the circulation chamber through the return end. Through circulation electrolysis, the electrolyte is deeply electrolyzed to achieve efficient recovery of precious metals and continuously reduce the metal ion content of the electrolyte during the circulation process.

[0021] (2) Set up a liquid collection pipe and a liquid collection tank. When the control valve on the liquid collection pipe is opened, the first transfer pump can transfer the electrolyte in the liquid collection tank to the outside. The liquid collection tank is used to collect the leakage inside the machine body. Two liquid level sensors are set in the liquid collection tank, and the two liquid level sensors are set one above the other. The lower liquid level sensor is used to detect whether there is leakage inside the machine body, while the upper leakage sensor detects whether the liquid level in the liquid collection tank has reached a certain threshold. When the threshold is reached, the equipment will stop circulating electrolysis and transport the liquid in the liquid collection tank to the outside to avoid affecting the normal operation of the equipment. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the deep electrolysis device of this utility model;

[0024] Figure 2 This is a schematic diagram of the internal circulation path of the deep electrolysis device of this utility model;

[0025] Figure 3 This is a schematic diagram showing the connection between the venting pipeline and the circulation chamber of the deep electrolysis device of this utility model. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0027] like Figure 1-3 As shown, the deep electrolysis device of this utility model includes a body 1, a storage tank 2, an electrolysis unit 3, and a circulation chamber 4.

[0028] The machine body 1 includes a complete outer shell, on which a set of casters and support legs are provided to support its movement and arrangement. A control panel and equipment indicator lights are provided on the complete outer shell to indicate the overall operation and running status of the equipment.

[0029] Storage tank 2 is positioned opposite to the main body 1. Storage tank 2 is used to store electrolyte. Multiple ports are provided on both the upper and lower sides of storage tank 2. A level gauge is also provided on storage tank 2 to indicate the level of electrolyte inside storage tank 2. The upper port of storage tank 2 can be connected to the production line, so that the metal-containing waste liquid formed in the production line can be directly discharged into storage tank 2 and used as electrolyte.

[0030] Electrolysis unit 3 is installed inside the body 1 and is used to electrolyze metal ions in the electrolyte entering the electrolysis unit 3. Similar to the prior art, the electrolysis unit 3 in this embodiment adopts an inner and outer cylinder arrangement. The inner cylinder serves as the cathode for metal electrolysis, while the outer cylinder serves as the anode. The inner cylinder, which serves as the cathode, can rotate in the electrolysis unit 3 to perform vortex electrolysis. The inner cylinder has a detachable structure, so that after electrolysis is completed, the inner cylinder can be removed and the electrolyzed metal can be recovered. Since this is clearly described in the prior art, it is not shown in detail in the accompanying drawings in this embodiment.

[0031] like Figure 2 As shown, the circulation chamber 4 is installed inside the body 1. The circulation chamber 4 includes an inlet end, a supply end and a return end. The inlet end of the circulation chamber 4 is connected to the storage tank 2. The supply end and the return end are both connected to the electrolysis unit 3. The supply end, the return end and the electrolysis unit 3 form an internal circulation flow path. The metal ions in the electrolyte are circulated and electrolyzed through the internal circulation flow path.

[0032] The circulation chamber 4 is equivalent to separating a portion of the electrolyte from the storage tank 2 and continuously circulating the electrolyte from the supply end to the electrolysis unit 3, and then returning it to the circulation chamber 4 through the return end. Through circulating electrolysis, the electrolyte is deeply electrolyzed to achieve efficient recovery of precious metals. During the circulation process, the metal ion content of the electrolyte is continuously reduced. When the metal electrowinning in the electrolyte in the circulation chamber 4 is completed, the electrolyte in the circulation chamber 4 can be discharged from the machine and a portion can be separated from the storage tank 2 through the supply end and enter the circulation chamber 4 for repeated electrolyte treatment until all the electrolyte in the storage tank 2 is electrolyzed.

[0033] In a preferred embodiment, an external discharge pipe 5 is also provided. The external discharge pipe 5 is connected to the circulation chamber 4 and extends to the outside of the machine body 1. Through the external discharge pipe 5, the electrolyzed raw electrolyte in the circulation chamber 4 can be discharged outside the machine body 1, thereby freeing up space in the circulation chamber 4 for the raw electrolyte in the storage tank 2 to enter the circulation chamber 4. Specifically, a first transfer pump is provided on the external discharge pipe 5, which drives the raw electrolyte to flow on the external discharge pipe 5.

[0034] Furthermore, the external discharge pipeline 5 includes an external return pipe 51 and a discharge pipe 52. The external return pipe 51 is connected to the storage tank 2 and is used to transfer the electrolyte in the circulation chamber 4 to the storage tank 2. The discharge pipe 52 is connected to an external waste liquid collection device and is used to discharge the waste liquid after electrolysis of the electrolyte in the circulation chamber 4 to the external waste liquid collection device.

[0035] The external return pipe 51 and the discharge pipe 52 are connected to the circulation chamber 4 through a three-way pipe. The first transfer pump is installed on the three-way pipe. Control valves are installed on both the external return pipe 51 and the discharge pipe 52 to control the opening and closing of the external return pipe 51 and the discharge pipe 52. At most one of the control valves on the external return pipe 51 and the discharge pipe 52 can be opened. When the control valve on the discharge pipe 52 is opened, the first transfer pump can discharge the electrolyte in the circulation chamber 4 to the next processing equipment. When the control valve on the external return pipe 51 is opened, the electrolyte in the circulation chamber 4 can flow back into the storage tank 2. The external return pipe 51 can be opened when the equipment is stopped and the electrolyte in the circulation chamber 4 and the electrolysis unit 3 is recovered, so as to wait for the next time the equipment is started to carry out electrolysis operation.

[0036] In a preferred embodiment, a liquid collection pipe 8 is also provided. A liquid collection tank 101 is provided inside the machine body 1. The liquid collection tank 101 is used to collect leaked electrolyte from inside the machine body 1. The liquid collection pipe 8 extends into the liquid collection tank 101 and is connected to the external discharge pipe 5. Specifically, a control valve is provided between the first transfer pump and the circulation chamber 4. The liquid collection pipe 8 is connected to the first transfer pump, and a control valve is also provided on the liquid collection pipe 8. At most one of the control valves between the first transfer pump and the circulation chamber 4 and the control valve on the liquid collection pipe 8 can be opened. When the control valve on the liquid collection pipe 8 is open... When opened, the first transfer pump can transfer the electrolyte in the collection tank 101 to the outside. The collection tank 101 is used to collect the leakage inside the machine body 1. Two liquid level sensors are installed in the collection tank 101, and the two liquid level sensors are set one above the other. The lower liquid level sensor is used to detect whether there is leakage inside the machine body 1, while the upper leakage sensor detects whether the liquid level in the collection tank 101 has reached a certain threshold. When the threshold is reached, the equipment will stop the circulating electrolysis and transport the liquid in the collection tank 101 to the outside to avoid affecting the normal operation of the equipment.

[0037] In this embodiment, in order to improve the electrolysis efficiency, there are multiple electrolysis units 3, all of which are set inside the body 1. All the electrolysis units 3 are connected to the circulation chamber 4. Through the multiple electrolysis units 3, the electrolyte is circulated and electrolyzed, which can effectively improve the electrowinning recovery efficiency of precious metals.

[0038] like Figure 2As shown, in this embodiment, the internal circulation path further includes an internal liquid supply pipeline 6 and an internal return pipeline 7. The internal liquid supply pipeline 6 connects the liquid supply end of the circulation chamber 4 to each electrolysis unit 3, and the internal return pipeline 7 connects the liquid return end of the circulation chamber 4 to each electrolysis unit 3. By setting the internal liquid supply pipeline 6 and the internal return pipeline 7, multiple electrolysis units 3 are connected to the circulation chamber 4, and the electrolyte is circulated to achieve circulating electrolysis.

[0039] The internal liquid supply line 6 extends from the bottom of the circulation chamber 4 and connects to each electrolysis unit 3. A second transfer pump is installed on the internal liquid supply line 6 to provide power in the internal circulation path, so that the electrolyte solution circulates. At the same time, control valves are installed on the branches of the internal liquid supply line 6 that connect to each electrolysis unit 3. Similarly, control valves are also installed on the branches of the internal return line 7 that connect to each electrolysis unit 3.

[0040] like Figure 3 As shown, in a preferred embodiment, a venting pipe 9 is also provided. The venting pipe 9 is connected to the bottom of the electrolysis unit 3 and connected to the circulation chamber 4. The venting pipe 9 is used to drain the electrolyte inside the electrolysis unit 3. When the equipment is about to be shut down for maintenance or other situations, the electrolyte inside the electrolysis unit 3 can be discharged into the circulation chamber 4 through the venting pipe 9. Each branch of the venting pipe 9 connected to each electrolysis unit 3 is equipped with a control valve, and the control valve is normally closed. The branch of the venting pipe 9 is connected to the bottom of the electrolysis unit 3 and the top of the circulation chamber 4. The venting pipe 9 does not have a U-shaped pipe. This arrangement allows the electrolyte to flow into the circulation chamber 4 completely under gravity or negative pressure.

[0041] In addition, a third transfer pump is installed on the pipeline connecting the storage tank 2 to the circulation chamber 4. It is used to transport the electrolyte in the storage tank 2 to the circulation chamber 4. The storage tank 2 is also directly connected to the external discharge pipeline 5, so that it can be directly discharged to the next equipment through the external discharge pipeline 5.

[0042] In a preferred embodiment, a pressure-holding pipeline 10 is also provided, which is connected to the circulation chamber 4. The pressure-holding pipeline 10 is used to introduce inert gas into the circulation chamber 4 to balance the pressure inside the circulation chamber 4. During the reaction and flow of the electrolyte, insufficient pressure may occur inside, affecting the normal circulation of the electrolyte. The pressure-holding pipeline 10 can connect to the circulation chamber 4 in real time, and introduce inert gas when the internal pressure is insufficient to ensure the balance of the internal pressure.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A deep electrolysis apparatus, characterized in that: It includes the main body (1), storage tank (2), electrolysis unit (3), and circulation chamber (4), among which, The body (1) and the storage tank (2) are arranged opposite to each other, and the storage tank (2) is used to store the electrolyte. The electrolysis unit (3) is installed inside the body (1) and is used to electrolyze the metal ions in the electrolyte entering the electrolysis unit (3); The circulation chamber (4) is located inside the body (1). The circulation chamber (4) includes an inlet end, a supply end and a return end. The inlet end of the circulation chamber (4) is connected to the storage tank (2). The supply end and the return end are both connected to the electrolysis unit (3). The supply end, the return end and the electrolysis unit (3) form an internal circulation flow path. The metal ions in the electrolyte are circulated and electrolyzed through the internal circulation flow path.

2. The deep electrolysis apparatus as described in claim 1, characterized in that: It also includes an external discharge pipe (5), which connects to the circulation chamber (4) and extends to the outside of the body (1).

3. The deep electrolysis apparatus as described in claim 2, characterized in that: The external discharge pipe (5) includes an external return pipe (51) and a discharge pipe (52), wherein, The external return pipe (51) is connected to the storage tank (2) and is used to transfer the electrolyte in the circulation chamber (4) to the storage tank (2); The discharge pipe (52) is connected to an external waste liquid collection device to discharge the waste liquid after electrolysis of the electrolyte in the circulation chamber (4) to the external waste liquid collection device.

4. The deep electrolysis apparatus as described in claim 2, characterized in that: It also includes a liquid collection pipe (8), and a liquid collection tank (101) is provided inside the body (1). The liquid collection tank (101) is used to collect the electrolyte leaked inside the body (1). The liquid collection pipe (8) extends into the liquid collection tank (101) and is connected to the external discharge pipe (5).

5. The deep electrolysis apparatus as described in claim 1, characterized in that: There are multiple electrolysis units (3), all of which are located inside the body (1), and all of the electrolysis units (3) are connected to the circulation chamber (4).

6. The deep electrolysis apparatus as described in claim 5, characterized in that: The internal circulation path also includes an internal liquid supply pipeline (6), which connects the liquid supply end of the circulation chamber (4) to each electrolysis unit (3).

7. The deep electrolysis apparatus as described in claim 5, characterized in that: The internal circulation path also includes an internal return pipe (7), which connects the return end of the circulation chamber (4) to each electrolysis unit (3).

8. The deep electrolysis apparatus as described in claim 1, characterized in that: It also includes a venting pipe (9), which is connected to the bottom of the electrolysis unit (3) and connected to the circulation chamber (4). The venting pipe (9) is used to drain the electrolyte inside the electrolysis unit (3).

9. The deep electrolysis apparatus as described in claim 1, characterized in that: It also includes a pressure-holding pipeline (10), which is connected to the circulation chamber (4). The pressure-holding pipeline (10) is used to introduce inert gas into the circulation chamber (4) to balance the pressure inside the circulation chamber (4).

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