A recycling system for recycling water from nickel-gold solution in electroplating lines

Abstract

The present invention relates to the technical field of electroplating process waste liquid treatment, and specifically to a nickel-gold solution recycling water recycling system for an electroplating line, which comprises a recycling box, wherein a first recycling tank, a second recycling tank, and a third recycling tank are arranged in sequence from left to right inside the recycling box, a water replenishment solenoid valve is arranged at one end of the recycling box, and a metering pump is arranged at the other end, a liquid storage tank is connected to the end of the metering pump away from the recycling box, and the metering pump is inserted into the bottom layer of the liquid storage pump, the liquid storage tank is arranged in sequence from top to bottom with a first electroplating solution storage tank, a second electroplating solution storage tank, and a third electroplating solution storage tank, the metering pump is connected to a control cabinet, a flow control device is arranged inside the liquid storage tank and the recycling tank, the flow control device is connected to the control cabinet, an evaporation device is fixedly installed on the top of the liquid storage tank, and a solution filter is arranged on one side of the evaporation device.

Description

Technical Field

[0001] The invention relates to the technical field of electroplating process waste liquid treatment, in particular to a nickel-gold solution recycling water recycling system for an electroplating line. Background Art

[0002] The electroplating process is a method of covering a conductor with a layer of metal using the principle of electrolysis. Electroplating refers to a surface processing method in which the base metal to be plated is used as the cathode in a salt solution containing the pre-plated metal, and the cations of the pre-plated metal in the plating solution are deposited on the surface of the base metal through electrolysis to form a coating. The surface of the product after electroplating often has residues attached to it. For example, when electroplating gold or nickel, the surface of the product will still have gold, nickel and other substances. Generally speaking, after the electroplating process is completed, the finished product is cleaned and flushed, and the waste liquid formed is directly discharged and discarded, which is easy to pollute the environment, waste residual substances, and cause cost losses. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a nickel-gold solution water recycling and reuse system for electroplating lines, which can recycle and reuse the residual liquid attached to the surface of the electroplated product.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A system for recycling water from nickel-gold solution in an electroplating line comprises a recycling box, wherein a first recycling tank, a second recycling tank and a third recycling tank are arranged in sequence from left to right inside the recycling box, a water replenishment solenoid valve is arranged at one end of the recycling box, and a metering pump is arranged at the other end, the end of the metering pump away from the recycling box is connected to a liquid storage tank, and the metering pump is inserted into the bottom layer of the liquid storage pump, the liquid storage tank is arranged from top to bottom with a first electroplating solution storage tank, a second electroplating solution storage tank and a third electroplating solution storage tank, the metering pump is connected to a control cabinet, a flow control device is arranged inside the liquid storage tank and the recycling box, the flow control device is connected to the control cabinet, an evaporation device is fixedly installed on the top of the liquid storage tank, and a solution filter is arranged on one side of the evaporation device.

[0006] Furthermore, the evaporation device includes a forced evaporator and an exhaust port. The forced evaporator is fixedly installed on the top of the liquid storage tank. The bottom of the forced evaporator is fixedly connected to an exhaust pipe, the exhaust pipe extends into the interior of the liquid storage tank, and the exhaust port is fixedly connected to the top of the forced evaporator.

[0007] Furthermore, a solution pump is installed on one side of the bottom of the liquid storage tank, and the solution pump is connected to the solution filter. A liquid-inflation and air-inflation integrated pipe is fixedly installed on the other end of the solution filter. A solenoid valve is installed on the top of the middle position of the liquid-inflation and air-inflation integrated pipe. The solenoid valve is connected to the forced evaporator, and the tail end of the liquid-inflation and air-inflation integrated pipe extends into the interior of the liquid storage tank.

[0008] Furthermore, the flow control device includes an electrode rod level gauge and a float level gauge, the electrode rod level gauge is installed inside the liquid storage tank, and the float level gauge is installed inside the recovery tank.

[0009] Furthermore, a first drain outlet is fixedly connected to the inner wall of the second recovery trough on the side close to the first recovery trough, a second drain outlet is fixedly connected to the inner wall of the third recovery trough on the side close to the second recovery trough, and the height of the first drain outlet is higher than the height of the second drain outlet.

[0010] In summary, the present invention has the following beneficial effects:

[0011] This system enables the recycled water containing gold, nickel and other substances to be replenished into the electroplating solution tank, thus preventing the waste of related substances in the solution and achieving the purpose of recycling and reuse. At the same time, it also prevents the discharge of wastewater, protects the environment and achieves the purpose of cost saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application, but do not constitute an improper limitation of the present invention. In the drawings:

[0013] Figure 1 It is the overall connection diagram of the present invention;

[0014] Figure 2 It is a schematic diagram of the structure inside the recycling box of the present invention;

[0015] Figure 3 It is a schematic diagram of the structure inside the liquid storage tank of the present invention.

[0016] In the figure, 1. recovery box; 101. first recovery tank; 102. second recovery tank; 103. third recovery tank; 2. water replenishment solenoid valve; 3. metering pump; 4. liquid storage tank; 401. first electroplating solution storage tank; 402. second electroplating solution storage tank; 403. third electroplating solution storage tank; 5. control cabinet; 6. solution filter; 7. forced evaporator; 8. exhaust port; 9. exhaust pipe; 10. solution pump; 11. integrated pipe for liquid and air replenishment; 12. solenoid valve; 13. electrode rod liquid level gauge; 14. float liquid level gauge; 15. first drain outlet; 16. second drain outlet. DETAILED DESCRIPTION

[0017] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figure 1 To Attachment Figure 3 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0018] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0019] Example 1: A system for recycling water from nickel-gold solution in an electroplating line, such as Figure 1 , Figure 2 As shown, it includes a recycling box 1, and the recycling box 1 is provided with a first recycling groove 101, a second recycling groove 102, and a third recycling groove 103 from left to right. The inner wall of the second recycling groove 102 close to the first recycling groove 101 is fixedly connected with a first drain outlet 15, and the inner wall of the third recycling groove 103 close to the second recycling groove 102 is fixedly connected with a second drain outlet 16, and the height of the first drain outlet 15 is higher than the height of the second drain outlet 16.

[0020] like Figure 1 , Figure 2 As shown, a water replenishment solenoid valve 2 is provided at one end of the recovery box 1, and a pipeline is connected to the water replenishment solenoid valve 2, which is connected to the inside of the first recovery tank 101 at the leftmost end of the recovery box 1, and a metering pump 3 is installed at the other end, that is, the metering pump 3 is connected and installed on the top of the third recovery tank 103.

[0021] like Figure 1 , Figure 3 As shown, the liquid storage tank 4 is provided with a first electroplating solution storage tank 401, a second electroplating solution storage tank 402, and a third electroplating solution storage tank 403 from top to bottom, and the end of the metering pump 3 away from the recovery tank 1 is connected to the liquid storage tank 4, and the metering pump 3 is inserted into the bottom layer of the liquid storage pump, that is, the solution is directly injected into the third electroplating solution storage tank 403 at the bottom layer, the third electroplating solution storage tank 403 and the second electroplating solution storage tank 402 are isolated from each other and do not affect each other, and the first solution storage tank and the second solution storage tank are connected to each other.

[0022] like Figure 1 , Figure 2 , Figure 3 As shown, the metering pump 3 is connected to a control cabinet 5, and a flow control device is provided inside the liquid storage tank 4 and the recovery tank 1. The flow control device includes an electrode rod liquid level gauge 13 and a float liquid level gauge 14. The electrode rod liquid level gauge 13 is installed inside the liquid storage tank 4. The electrode rod liquid level gauge 13 and the float liquid level gauge 14 are both connected to the control cabinet 5, and the float liquid level gauge 14 is installed inside the recovery tank 1.

[0023] like Figure 1 , Figure 3As shown, an evaporation device is fixedly installed on the top of the liquid storage tank 4, and a solution filter 6 is provided on one side of the evaporation device. The evaporation device includes a forced evaporator 7 and an exhaust port 8. The forced evaporator 7 is fixedly installed on the top of the liquid storage tank 4, and an exhaust pipe 9 is fixedly connected to the bottom of the forced evaporator 7. The exhaust pipe 9 extends into the interior of the liquid storage tank 4, and the exhaust port 8 is fixedly connected to the top of the forced evaporator 7.

[0024] like Figure 1 , Figure 3 As shown, a solution pump 10 is installed on one side of the bottom of the liquid storage tank 4, and the solution pump 10 is connected and installed with the solution filter 6. A liquid-inflation and air-inflation integrated pipe 11 is fixedly installed on the other end of the solution filter 6. A solenoid valve 12 is installed on the top of the middle position of the liquid-inflation and air-inflation integrated pipe 11. The solenoid valve 12 is connected and installed with the forced evaporator 7, and the tail end of the liquid-inflation and air-inflation integrated pipe 11 extends into the interior of the liquid storage tank 4.

[0025] In an embodiment of the present invention, during the electroplating process, the surface of the product often carries residual solution containing substances such as gold and nickel. The product is placed in the recycling box 1 for flushing. After the water replenishment solenoid valve 2 is opened, water is injected into the first recovery tank 101, and the aqueous solution flushes the surface of the product. When the solution level rises, the first drain port 15 enters the second recovery tank 102, and enters the third recovery tank 103 according to the same principle. The setting of the first recovery tank 101, the second recovery tank 102, and the third recovery tank 103 realizes three repeated flushing of the product. After flushing, the product is taken out and the remaining recovery liquid is stored in the recycling box 1.

[0026] The float level gauge 14 in the recovery tank 1 monitors and detects the liquid level height in the third recovery tank 103. In the liquid storage tank 4 at the other end, the electrode rod level gauge 13 detects the liquid level of the three-layer electroplating solution storage tank. Since the solution inside the liquid storage tank 4 is quantitative, the forced evaporator 7 is used to force the evaporation of the water in the liquid storage tank 4, so that the liquid level in the liquid storage tank 4 is forced to drop. When the electrode rod level gauge 13 captures the liquid level drop signal, the quantitative pump 3 starts to work and replenishes the solution inside the recovery tank 1 to the third electroplating solution storage tank 403 at the bottom. After the float level gauge 14 detects that the liquid level in the recovery tank 1 has dropped, it continues to control the solenoid valve 12 to replenish the aqueous solution into the recovery tank 1 to continue flushing the new product.

[0027] After the solution enters the third electroplating solution storage tank 403, the solution pump 10 draws the solution into the solution filter 6 at the top to filter the solution. The filtered solution flows back to the top of the recovery box 1. At the same time, the evaporated solution of the evaporator is discharged into the air from the exhaust port 8 as a harmless gas. At the same time, the solenoid valve 12 can be used to replenish the gas inside the liquid storage tank 4 to maintain the air pressure balance inside the box. The whole system works in a cycle to complete the recycling of the recovered liquid, so that the substances attached to the product can be replenished into the electroplating solution tank for subsequent use, which greatly saves costs and is in line with the green production concept of sustainable development.

[0028] The above is a further detailed description of the present invention in combination with a specific implementation method, and it cannot be determined that the specific implementation of the present invention is limited to this; for technical personnel in the technical field to which the present invention belongs and related technical fields, based on the technical solution of the present invention, the expansion and replacement of operating methods and data should all fall within the protection scope of the present invention.

Claims

1. A system for recycling water recovered from nickel-gold solution in an electroplating line, comprising a recycling tank (1), characterized in that: The recovery box (1) is provided with a first recovery tank (101), a second recovery tank (102), and a third recovery tank (103) from left to right in sequence. A water replenishment solenoid valve (2) is provided at one end of the recovery box (1), and a metering pump (3) is provided at the other end. The metering pump (3) is connected to a liquid storage tank (4) at one end away from the recovery box (1), and the metering pump (3) is inserted into the bottom layer of the liquid storage tank. The liquid storage tank (4) is provided with a first electroplating solution storage tank (401), a second electroplating solution storage tank (402), and a third electroplating solution storage tank (403) from top to bottom in sequence. The metering pump (3) is connected to a control cabinet (5). The liquid storage tank (4) and the recovery tank (1) are provided with a flow control device inside, the flow control device is connected to a control cabinet (5), an evaporation device is fixedly installed on the top of the liquid storage tank (4), a solution filter (6) is provided on one side of the evaporation device, a first drain port (15) is fixedly connected to the inner wall of the second recovery tank (102) on the side close to the first recovery tank (101), a second drain port (16) is fixedly connected to the inner wall of the third recovery tank (103) on the side close to the second recovery tank (102), and the height of the first drain port (15) is higher than the height of the second drain port (16).

2. The system for recycling water recovered from nickel-gold solution in an electroplating line according to claim 1, characterized in that: The evaporation device comprises a forced evaporator (7) and an exhaust port (8); the forced evaporator (7) is fixedly mounted on the top of a liquid storage tank (4); an exhaust pipe (9) is fixedly connected to the bottom of the forced evaporator (7); the exhaust pipe (9) extends into the interior of the liquid storage tank (4); and the exhaust port (8) is fixedly connected to the top of the forced evaporator (7).

3. The system for recycling water recovered from nickel-gold solution in an electroplating line according to claim 2, characterized in that: A solution pump (10) is installed on one side of the bottom of the liquid storage tank (4), and the solution pump (10) is connected to the solution filter (6). A liquid-inflation and gas-inflation integrated pipe (11) is fixedly installed on the other end of the solution filter (6). A solenoid valve (12) is installed at the top of the middle position of the liquid-inflation and gas-inflation integrated pipe (11), and the solenoid valve (12) is connected to the forced evaporator (7). The tail end of the liquid-inflation and gas-inflation integrated pipe (11) extends into the interior of the liquid storage tank (4).

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