An acidic etching solution recycling device

Abstract

The utility model discloses a kind of acidic etching liquid recycling device, it is related to etching liquid recovery field, including base, the top end of the base is fixedly connected with processing box, the top of the processing box is fixedly installed with motor, the output of the motor is through the upper surface of processing box and is fixedly connected with rotating shaft, the top of the processing box is fixedly connected with liquid inlet on the left side of motor, the outside of the motor is provided with protective housing, the inside of the processing box is provided with pretreatment component, the inside of the processing box is fixedly connected with fixed plate below pretreatment component, by preliminary filtration to etching liquid and the impurity on screen is cleaned, reduce the downtime caused by manual operation and equipment maintenance, improve production efficiency, by spray component, chlorine gas generated by electrolytic cell is purified, so that harmful gas is converted into harmless substance and is discharged from purification outlet.

Description

Technical Field

[0001] This utility model relates to the field of etching solution recycling, specifically to an acid etching solution recycling device. Background Technology

[0002] Acidic etching solution is a chemical solution with copper chloride and hydrochloric acid as its main components. It is widely used in the electronics manufacturing and PCB industries. It mainly uses chemical reactions to corrode the metal surface to accurately depict the required circuit patterns. As etching proceeds, the concentration of copper ions in the solution continuously increases, which requires discharge to form acidic etching waste liquid. Acidic etching waste liquid can be recycled and reused to recover copper and regenerate etching solution, thereby improving resource utilization and reducing environmental pollution.

[0003] In existing technologies, electrolysis is commonly used to recycle copper and etching solutions from waste liquids. This involves setting up a cathode and anode in an electrolytic cell to electrolyze the waste liquid, causing oxidation or reduction reactions. Before the etching waste liquid is introduced into the electrolytic cell, it is usually filtered through a screen. However, in current devices, the screen is prone to clogging during long-term operation, requiring manual shutdown for cleaning, which wastes a lot of time. Furthermore, the reaction in the electrolytic cell produces chlorine gas as a byproduct, and direct emission of chlorine gas can pollute the environment. Therefore, an acidic etching solution recycling device is proposed to solve the problems mentioned above. Utility Model Content

[0004] To solve the above-mentioned technical problems, an acid etching solution recycling device is provided. This technical solution solves the problems mentioned in the background technology, such as easy clogging of the screen and the inability to directly discharge the generated chlorine gas.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an acidic etching solution recycling device, comprising a base, a processing tank fixedly connected to the top of the base, a motor fixedly installed at the top of the processing tank, the output end of the motor penetrating the upper surface of the processing tank and fixedly connected to a rotating shaft, a liquid inlet fixedly connected to the top of the processing tank on the left side of the motor, a protective shell provided on the outside of the motor, a pretreatment component provided inside the processing tank, a fixing plate fixedly connected to the inner side of the processing tank below the pretreatment component, a liquid collection hopper fixedly connected to the lower end of the fixing plate, and a connecting pipe connected to the lower end of the liquid collection hopper. First, the other end of the connecting pipe is connected to a water pump, and the output end of the water pump is connected to a connecting pipe. The right end of the treatment tank is fixedly connected to a partition box. The other end of the connecting pipe passes through the right end of the treatment tank and the interior of the partition box and is connected to an electrolytic cell. The top of the electrolytic cell is fixedly connected to a tank cover. The right end of the electrolytic cell is connected to a liquid outlet pipe. The upper end of the tank cover is connected to an air outlet pipe. The other end of the air outlet pipe is connected to an air pump. The output end of the air pump is connected to an air outlet pipe. The other end of the air outlet pipe is connected to a spray tower. The top of the spray tower is fixedly connected to a purification outlet. A spray assembly is installed on the right side of the spray tower.

[0006] Preferably, the pretreatment assembly includes a filter cylinder, connectors, a coarse screen, and a fine screen. The two connectors are respectively fixedly connected to the inner walls of the left and right sides of the treatment box. The filter cylinder is fixedly connected between the two connectors. The coarse screen and the fine screen are both fixedly connected to the inner side of the filter cylinder. The fine screen is located below the coarse screen. The outer surface of the filter cylinder, above the coarse screen and the fine screen, has a through-hole for discharging impurities. Two cleaning blades are fixedly connected to the outer surface of the rotating shaft. A collection box is fixedly connected to the outer surface of the filter cylinder, below the connectors.

[0007] Preferably, the lower ends of the two cleaning blades are in close contact with the upper ends of the coarse screen and the fine screen, respectively.

[0008] Preferably, the spray assembly includes a liquid storage tank and a first liquid collection pipe. The liquid storage tank is fixedly connected to the top of the base, and the first liquid collection pipe is connected to the top of the liquid storage tank. The other end of the first liquid collection pipe is connected to a second water pump, and the output end of the second water pump is connected to the second liquid collection pipe. The outer surface of the second liquid collection pipe is connected to two distribution pipes, and the other ends of the two distribution pipes extend into the interior of the spray tower and are connected to multiple spray nozzles.

[0009] Preferably, a packing layer is fixedly connected to the inner surface of the spray tower between the two liquid distribution pipes.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: the pretreatment component performs preliminary filtration of the etching solution and cleans the impurities on the screen, reducing downtime caused by manual operation and equipment maintenance and improving production efficiency; the spray component purifies the chlorine gas generated by the electrolytic cell, so that harmful gases are converted into harmless substances and discharged from the purification outlet, reducing environmental pollution. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the processing box in this utility model; Figure 3 This is a schematic diagram of the pretreatment component in this utility model; Figure 4 This is a schematic diagram of the internal structure of the spray tower in this utility model.

[0012] The numbers on the map are: 1. Base; 2. Processing tank; 3. Motor; 4. Rotating shaft; 5. Liquid inlet; 6. Protective housing; 7. Pretreatment assembly; 701. Filter cartridge; 702. Connector; 703. Coarse screen; 704. Fine screen; 705. Impurity discharge port; 706. Cleaning blade; 707. Collection tank; 8. Fixing plate; 9. Liquid collection hopper; 10. Connecting pipe one; 11. Water pump one; 12. Connecting pipe two ; 13. Separator box; 14. Electrolytic cell; 15. Tank cover; 16. Liquid outlet pipe; 17. Gas outlet pipe one; 18. Air pump; 19. Gas outlet pipe two; 20. Spray tower; 21. Purification outlet; 22. Spray assembly; 2201. Liquid storage tank; 2202. Liquid collection pipe one; 2203. Water pump two; 2204. Liquid collection pipe two; 2205. Liquid distribution pipe; 2206. Spray head; 23. Packing layer. Detailed Implementation

[0013] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0014] Reference Figures 1-4As shown, an acidic etching solution recycling device includes a base 1, a processing tank 2 fixedly connected to the top of the base 1, a motor 3 fixedly installed at the top of the processing tank 2, the output end of the motor 3 passing through the upper surface of the processing tank 2 and fixedly connected to a rotating shaft 4, an inlet 5 fixedly connected to the top of the processing tank 2 on the left side of the motor 3, a protective shell 6 provided on the outside of the motor 3, and a pretreatment component 7 provided inside the processing tank 2. The pretreatment component 7 performs preliminary filtration of the etching solution and cleans impurities on the screen, reducing downtime caused by manual operation and equipment maintenance and improving production efficiency. Furthermore, the pretreatment component 7 includes a filter cylinder 701, connectors 702, a coarse screen 703, and a fine screen 704. Two connectors 702 are fixedly connected to the inner walls of the left and right sides of the treatment box 2, respectively. The filter cylinder 701 is fixedly connected between the two connectors 702. Both the coarse screen 703 and the fine screen 704 are fixedly connected to the inner side of the filter cylinder 701. The fine screen 704 is located below the coarse screen 703. The outer surface of the filter cylinder 701, above the coarse screen 703 and the fine screen 704, has a through-hole 705 for impurity discharge. The outer surface of the rotating shaft 4... Two cleaning blades 706 are fixedly connected to the filter cylinder 701. The lower ends of the two cleaning blades 706 are in close contact with the upper ends of the coarse screen 703 and the fine screen 704, respectively. A collection box 707 is fixedly connected to the outer surface of the filter cylinder 701 below the connector 702. The etching solution is introduced into the processing tank 2 through the liquid inlet 5, and then impurities are filtered through the coarse screen 703 and the fine screen 704. The rotating shaft 4 is driven by the motor 3 to rotate, which drives the cleaning blades 706 to rotate and clean the impurities on the filter screen. The cleaned impurities are removed by inserting a clamp or other tool through the impurity discharge port 705. The contents are collected in the collection box 707. A fixing plate 8 is fixedly connected to the inner side of the processing box 2, below the pretreatment component 7. A collection hopper 9 is fixedly connected to the lower end of the fixing plate 8. A connecting pipe 10 connects to the lower end of the collection hopper 9. A water pump 11 connects to the other end of the connecting pipe 10. A connecting pipe 12 connects to the output end of the water pump 11. A partition box 13 is fixedly connected to the right end of the processing box 2. The other end of the connecting pipe 12 passes through the right end of the processing box 2 and the interior of the partition box 13, and connects to an electrolytic cell 14. A cell cover 15 is fixedly connected to the top of the electrolytic cell 14. The right end of the electrolytic cell 14 is connected to the liquid outlet pipe 16, the upper end of the cell cover 15 is connected to the gas outlet pipe 17, the other end of the gas outlet pipe 17 is connected to the air pump 18, the output end of the air pump 18 is connected to the gas outlet pipe 29, the other end of the gas outlet pipe 29 is connected to the spray tower 20, the top of the spray tower 20 is fixedly connected to the purification outlet 21, and the right side of the spray tower 20 is provided with a spray assembly 22. The chlorine gas generated by the electrolytic cell 14 is purified by the spray assembly 22, so that the harmful gas is converted into harmless substances and discharged from the purification outlet 21, thereby reducing pollution to the environment. Furthermore, the spray assembly 22 includes a storage tank 2201 and a first collection pipe 2202. The storage tank 2201 is fixedly connected to the top of the base 1. The first collection pipe 2202 is connected to the top of the storage tank 2201. The other end of the first collection pipe 2202 is connected to a second water pump 2203. The output end of the second water pump 2203 is connected to a second collection pipe 2204. The outer surface of the second collection pipe 2204 is connected to two distribution pipes 2205. A packing layer 23 is fixedly connected to the inner surface of the spray tower 20 between the two distribution pipes 2205. The packing layer 23 can significantly increase the contact area between gas and liquid, allowing harmful gases to fully contact the purification liquid and improving the absorption and purification efficiency of harmful gases. The other ends of the two liquid distribution pipes 2205 extend into the interior of the spray tower 20 and are connected to multiple spray nozzles 2206. The water pump 2203 is started to transport the purification liquid in the storage tank 2201 to the spray nozzles 2206 through the collection pipe 2204 and the liquid distribution pipes 2205. The spray nozzles 2206 bring the purification liquid into close contact with chlorine gas, causing it to be converted into harmless substances and discharged from the purification outlet 21.

[0015] The usage process of this utility model is as follows: First, the etching solution is introduced into the treatment tank 2 through the inlet 5. Then, the impurities are filtered through the coarse screen 703 and the fine screen 704. After that, the rotating shaft 4 is driven by the motor 3 to rotate, which in turn drives the cleaning blade 706 to rotate and clean the impurities on the filter screen to prevent the filter screen from clogging. The cleaned impurities are discharged through the discharge port 705 and collected in the collection tank 707. The pre-treated etching solution flows into the connecting pipe 10 through the collection hopper 9 and is pumped to the electrolytic cell 14 for electrolysis. The etching solution after electrolysis is discharged and collected through the outlet pipe 16. The generated byproduct chlorine gas is transported to the spray tower 20 through the gas pump 18 through the gas outlet pipe 17 and the gas outlet pipe 29. The second water pump 2203 is started to transport the purified liquid in the storage tank 2201 to the nozzle 2206 through the collection pipe 2204 and the distribution pipe 2205. The nozzle 2206 brings the purified liquid into close contact with the chlorine gas, converting it into a harmless substance and discharging it from the purification outlet 21.

[0016] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An acid etching solution recycling device, comprising a base (1), characterized in that: A processing tank (2) is fixedly connected to the top of the base (1). A motor (3) is fixedly installed on the top of the processing tank (2). The output end of the motor (3) passes through the upper surface of the processing tank (2) and is fixedly connected to a rotating shaft (4). An inlet (5) is fixedly connected to the top of the processing tank (2) to the left of the motor (3). A protective shell (6) is provided on the outside of the motor (3). A pretreatment component (7) is provided inside the processing tank (2). A fixing plate (8) is fixedly connected to the inside of the processing tank (2) below the pretreatment component (7). A liquid collection hopper (9) is fixedly connected to the lower end of the fixing plate (8). A connecting pipe (10) is connected to the lower end of the liquid collection hopper (9). A water pump (11) is connected to the other end of the connecting pipe (10). The output end of the water pump (11) A connecting pipe 2 (12) is connected to the right end of the treatment box (2), and a partition box (13) is fixedly connected to the right end of the treatment box (2) and the interior of the partition box (13). An electrolytic cell (14) is connected to the other end of the connecting pipe 2 (12). A pool cover (15) is fixedly connected to the top of the electrolytic cell (14). An outlet pipe (16) is connected to the right end of the electrolytic cell (14). An outlet pipe 1 (17) is connected to the upper end of the pool cover (15). An air pump (18) is connected to the other end of the outlet pipe 1 (17). An outlet pipe 2 (19) is connected to the output end of the air pump (18). A spray tower (20) is connected to the other end of the outlet pipe 2 (19). A purification outlet (21) is fixedly connected to the top of the spray tower (20). A spray assembly (22) is provided on the right side of the spray tower (20).

2. The acid etching solution recycling device according to claim 1, characterized in that: The pretreatment component (7) includes a filter cylinder (701), a connector (702), a coarse screen (703), and a fine screen (704). The two connectors (702) are fixedly connected to the inner walls of the left and right sides of the treatment box (2). The filter cylinder (701) is fixedly connected between the two connectors (702). The coarse screen (703) and the fine screen (704) are both fixedly connected to the inner side of the filter cylinder (701). The fine screen (704) is located below the coarse screen (703). The outer surface of the filter cylinder (701) is provided with a discharge port (705) above the coarse screen (703) and the fine screen (704). The outer surface of the rotating shaft (4) is fixedly connected with two cleaning blades (706). The outer surface of the filter cylinder (701) is fixedly connected with a collection box (707) below the connector (702).

3. The acid etching solution recycling device according to claim 2, characterized in that: The lower ends of the two cleaning blades (706) are in close contact with the upper ends of the coarse screen (703) and the fine screen (704), respectively.

4. The acid etching solution recycling device according to claim 1, characterized in that: The spray assembly (22) includes a storage tank (2201) and a collection pipe (2202). The storage tank (2201) is fixedly connected to the top of the base (1). The collection pipe (2202) is connected to the top of the storage tank (2201). The other end of the collection pipe (2202) is connected to a water pump (2203). The output end of the water pump (2203) is connected to the collection pipe (2204). The outer surface of the collection pipe (2204) is connected to two distribution pipes (2205). The other end of the two distribution pipes (2205) extends into the interior of the spray tower (20) and is connected to multiple nozzles (2206).

5. The acid etching solution recycling device according to claim 4, characterized in that: The inner surface of the spray tower (20) is fixedly connected with a packing layer (23) between the two liquid distribution pipes (2205).

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