Preparation method and device of green sustainable cyanide-free gold plating solution

Abstract

The invention relates to the technical field of gold plating solution preparation, in particular to a green sustainable cyanide-free gold plating solution preparation method and device, and the method comprises the following steps: S1, preparing reagents required for preparation: a chloroauric acid solution, a sodium thiosulfate solution, GSH, potassium hydroxide and dilute sulfuric acid; s2, preparing HAu (GSH) 2; s3, preparing a gold plating solution; in the washing process, a third motor is started, the third motor drives a reciprocating lead screw to rotate through an output shaft, the reciprocating lead screw drives a sealing plate to move upwards, the sealing plate drives a screening basket to move upwards, in the moving process of the screening basket, a water outlet moves to the position above a bottom plate, and washing water flows down through the water outlet; and after washing is completed, the third motor is continuously driven to rotate, the sealing plate continues to move upwards through the third motor until the second sealing ring makes contact with the bottom plate, the discharging port moves to the position above the bottom plate, HAu (GSH) 2 is discharged through the discharging port, and the rapid discharging function is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of gold plating solution preparation, in particular to a green and sustainable cyanide-free gold plating solution preparation method and device. Background Art

[0002] Gold plating has a history of more than 100 years. At present, the commonly used gold plating processes at home and abroad are cyanide gold plating process and cyanide-free gold plating process. Although the cyanide gold plating process is mature, there is highly toxic cyanide in the plating solution, which seriously pollutes the environment; the cyanide-free gold plating process mainly includes sulfite gold plating, which plays a decisive role in the gold plating process and the quality of gold-plated parts, has a wide range of applications, and meets the requirements of environmentally friendly electroplating.

[0003] A Chinese patent with publication number CN106490972A discloses a beverage preparation device, including: a base, a centrifugal motor, a motor shaft, a centrifugal plate, an external bracket, a centrifugal separation cylinder, a connecting pipe, a first beverage preparation cylinder, a second beverage preparation cylinder, a third beverage preparation cylinder, a joint, a valve, a connecting plate, a piston cylinder, a piston, a piston shaft, a sealing plug, an extraction tube, and a groove. The centrifugal motor is fixedly installed on the base, the motor shaft is installed in the centrifugal motor, and the centrifugal plate is fixedly installed on the top of the motor shaft. The invention adopts a design in which the first beverage preparation cylinder, the second beverage preparation cylinder, and the third beverage preparation cylinder are arranged on the centrifugal separation cylinder, and the liquid can be separated by centrifugal force and then the liquid is extracted. The design is scientific and reasonable, the structure is simple, and it is easy to use.

[0004] In the above-mentioned technology, the beverage is extracted by separating the liquid by centrifugal force, but for HAu(GSH) 2 During the preparation process, solids are formed by centrifugation, which is not convenient to extract through the extraction tube, and HAu(GSH) 2 There is some residual solution on the surface, which needs to be washed and filtered. The device is not convenient for washing, filtering water and HAu(GSH) 2 Discharging.

[0005] To this end, the present invention provides a method and device for preparing a green and sustainable cyanide-free gold plating solution. Summary of the invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the inconvenience of HAu(GSH) in the prior art. 2 The problem of fast material discharge.

[0007] In order to solve the above technical problems, the present invention provides a method for preparing a green and sustainable cyanide-free gold plating solution, which comprises the following steps:

[0008] S1: Preparation of HAu(GSH) 2Required reagents: chloroauric acid solution, sodium thiosulfate solution, GSH, potassium hydroxide, dilute sulfuric acid;

[0009] S2: Preparation of HAu(GSH) 2 HAu(GSH) was obtained by preparing each component in sequence, stirring evenly, centrifuging, filtering and washing. 2 ;

[0010] S3: Prepare gold plating solution and add the obtained HAu(GSH) 2 Mix with other ingredients.

[0011] In one embodiment of the present invention, the components of each reagent in S1 are:

[0012] Chloroauric acid solution 3-5g / L;

[0013] Sodium thiosulfate solution 10-14 g / L;

[0014] GSH 30-35 g / L;

[0015] Potassium hydroxide 20-24 g / L;

[0016] 5% by mass of dilute sulfuric acid.

[0017] In one embodiment of the present invention, HAu(GSH) in S2 2 The preparation method is as follows:

[0018] S21: mixing a chloroauric acid solution and a sodium thiosulfate solution at a molar ratio of SO ions to Au ions of 7:3, and stirring to obtain a solution A;

[0019] S22: GSH and the solution A prepared in step S21 are mixed at a molar ratio of GSH to Au ions of 2:1, and stirred to obtain a solution B;

[0020] S23: mixing potassium hydroxide and solution B prepared in step S22 until the pH value is adjusted to 8.5-9.5, and stirring evenly to obtain solution C;

[0021] S24: Mix 5% by mass of dilute sulfuric acid and solution 3 prepared in step IV until the pH value is adjusted to 3-5, stir evenly, centrifuge, filter and wash to obtain HAu(GSH) 2 .

[0022] In one embodiment of the present invention, other components in S3 include 30-35 g / L GSH, 8-12 g / L hydroxyethylidene diphosphonic acid, 30 g / L potassium hydroxide, distilled water as solvent, and pH value of 9.5-10.5.

[0023] A green and sustainable cyanide-free gold plating solution preparation device. In one embodiment of the present invention, the preparation method uses a preparation device comprising:

[0024] Preparation cylinder;

[0025] The outer cylinder is fixedly connected to the outer side of the preparation cylinder through a connecting ring plate, and four pillars are evenly arranged and fixedly connected to the bottom circumference;

[0026] A ramp, fixedly connected to the bottom inner wall of the outer cylinder;

[0027] A bottom plate, fixedly connected to the inner wall of the bottom end of the preparation cylinder;

[0028] A discharging mechanism is arranged on the bottom plate;

[0029] The discharging mechanism includes a third motor fixedly connected to the bottom of the base plate, the output shaft of the third motor is rotatably connected to the base plate through a bearing, the output shaft of the third motor is fixedly connected to a reciprocating screw, a sealing plate is threadedly connected to the reciprocating screw, and the sealing plate cooperates with a placement groove at the top of the base plate; a screen basket is fixedly connected to the bottom of the sealing plate, and a first sealing ring and a second sealing ring are respectively fixedly connected to the two ends of the screen basket; a plurality of water outlets and discharge outlets are arranged circumferentially on the screen basket, wherein the water outlet is smaller than the diameter of the discharge outlet and is arranged above the discharge outlet; a discharge pipe is connected and fixedly connected to the bottom of the preparation cylinder, and a first solenoid valve is installed on the discharge pipe; four nozzles are arranged circumferentially above the preparation cylinder.

[0030] In one embodiment of the present invention, a second motor is fixedly connected to the top of the preparation cylinder, and the output shaft of the second motor is rotatably connected to the preparation cylinder through a bearing. The output shaft of the second motor is fixedly connected to a rotating rod, and a plurality of stirring paddles are fixedly connected to the rotating rod; the top of the reciprocating screw is rotatably connected to the bottom of the rotating rod through a bearing.

[0031] In one embodiment of the present invention, the top of the preparation cylinder is rotatably connected to a water diversion box via a bearing, the top of the water diversion box is connected and fixedly connected to a water inlet pipe, the bottom of the water diversion box is rotatably connected to a water outlet box via a bearing, the water outlet box is fixedly connected to a rotating rod, a circular plate is fixedly connected to the rotating rod, four sliding openings are opened on the circular plate, two sliding rods are fixedly connected in the sliding openings, two sliding rods are slidably connected to sliders, the sliders are connected and fixedly connected to a water outlet pipe, and the tops of the water outlet pipes are connected and fixedly connected to the water outlet box via hoses; the spray heads are rotatably connected to the bottom of the water outlet pipe via bearings, and impellers are fixedly connected in the spray heads via connecting rods; springs are sleeved on the sliding rods, and the two ends of the springs are respectively fixedly connected to the slider and the circular plate.

[0032] In one embodiment of the present invention, a gear ring is fixedly connected to the outer wall of the preparation cylinder, a first motor is fixedly connected to the connecting ring plate, an output shaft of the first motor is rotatably connected to the connecting ring plate through a bearing, and a gear is fixedly connected thereto, and the gear meshes with the gear ring.

[0033] In one embodiment of the present invention, a fixing plate is fixedly connected to the side wall of the preparation cylinder, and the fixing plate is connected and fixedly connected to a feeding cylinder. The bottom end of the feeding cylinder is connected and fixedly connected to the preparation pipe through a discharge pipe, a third solenoid valve is installed on the connecting pipe, and a plug is inserted at the top of the feeding cylinder.

[0034] In one embodiment of the present invention, a ramp is fixedly connected to the inner wall of the bottom of the outer cylinder, a discharge pipe is connectedly connected to the side wall of the outer cylinder, a second solenoid valve is installed on the discharge pipe, and the discharge pipe is arranged at the lower end of the ramp.

[0035] The above technical solution of the present invention has the following advantages compared with the prior art:

[0036] The green and sustainable cyanide-free gold plating solution preparation method and device of the present invention can achieve HAu(GSH) by matching the sieve basket, the water outlet and the material outlet. 2 After centrifugation, solid matter is formed, and water is sprayed out through the nozzle to wash the solid matter. During the washing process, the third motor is turned on, and the third motor drives the reciprocating screw to rotate through the output shaft, and the sealing plate is driven to move upward through the reciprocating screw, and the sieve basket is driven to move upward through the sealing plate. During the movement of the sieve basket, the water outlet moves to the top of the bottom plate, and the washing water flows down through the water outlet. At this time, the first solenoid valve is opened, and the water flows out through the discharge pipe and finally discharged through the discharge pipe; after the washing is completed, the third motor is continued to be driven to rotate, and the sealing plate continues to move upward through the third motor until the second sealing ring contacts the bottom plate. At this time, the discharge port moves to the top of the bottom plate, HAu (GSH) 2 The material is discharged through the discharge port and finally discharged through the discharge pipe and the discharge pipe, realizing the rapid discharge of HAu(GSH) 2 The function of discharging materials.

[0037] The green and sustainable cyanide-free gold plating solution preparation method and device of the present invention cooperates with a water inlet box, a water outlet box and a nozzle. Water enters the water inlet box through a water inlet pipe, and the water in the water inlet box is discharged through a water outlet box. The water in the water outlet box is finally sprayed into the preparation cylinder through a hose, a water outlet pipe and a nozzle. At this time, the second motor is turned on, and the rotating rod is driven by the second motor to rotate, and the rotating rod drives the circular plate and the water outlet box to rotate, and the circular plate drives the slider and the nozzle to rotate. The centrifugal force exerted on the nozzle during rotation is different due to different speed adjustment of the second motor. When the speed is faster, the centrifugal force is large. Under the cooperation of the spring and the slider, the nozzle moves outward. On the contrary, when the speed is slower, the centrifugal force is small, and the nozzle moves inward, thereby adjusting the position of the nozzle to fully HAu (GSH) in the preparation cylinder. 2 Washing is performed; and when water flows through the nozzle, since an impeller is arranged inside the nozzle, the impeller rotates under the water flow, and the impeller drives the nozzle to rotate through a connecting rod. When the nozzle rotates, water is sprayed out to increase the spray range and improve the washing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings.

[0039] Figure 1 is a flow chart of the preparation method of the present invention;

[0040] Figure 2 is a stereogram of the present invention;

[0041] Figure 3 is a cross-sectional view of the present invention;

[0042] Figure 4 It is a three-dimensional diagram of the preparation cylinder in the present invention;

[0043] Figure 5 is a three-dimensional diagram of a sealing plate in the present invention;

[0044] Figure 6 It is a three-dimensional view of the cross section of the water inlet box and the water outlet box in the present invention;

[0045] Figure 7 is a three-dimensional diagram of a cross section of a bottom plate in the present invention;

[0046] Figure 8 is a stereogram of a screen basket in the present invention;

[0047] Description of the accompanying drawings: 1. preparation cylinder; 11. connecting ring plate; 12. first motor; 13. gear; 14. gear ring; 15. discharge pipe; 16. first solenoid valve; 2. outer cylinder; 21. support; 22. discharge pipe; 23. second solenoid valve; 24. ramp; 3. feed cylinder; 31. fixing plate; 32. third solenoid valve; 33. plug; 4. second motor; 41. rotating rod; 42. stirring paddle; 4 3. Bottom plate; 5. Water inlet pipe; 51. Water diversion box; 52. Water outlet box; 53. Hose; 54. Round plate; 55. Sliding port; 56. Sliding block; 57. Sliding rod; 58. Spring; 59. Water outlet pipe; 510. Sprinkler; 511. Impeller; 6. Sealing plate; 61. Screen basket; 62. First sealing ring; 63. Second sealing ring; 64. Reciprocating screw; 65. Third motor; 66. Water outlet; 67. Discharge port. DETAILED DESCRIPTION

[0048] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0049] Embodiment 1:

[0050] See also Figure 1 The present invention provides a method for preparing a green and sustainable cyanide-free gold plating solution, which comprises the following steps:

[0051] S1: Preparation of HAu(GSH) 2 Required reagents: chloroauric acid solution, sodium thiosulfate solution, GSH, potassium hydroxide, dilute sulfuric acid;

[0052] S2: Preparation of HAu(GSH) 2 HAu(GSH) was obtained by preparing each component in sequence, stirring evenly, centrifuging, filtering and washing. 2 ;

[0053] S3: Prepare gold plating solution and add the obtained HAu(GSH) 2 Mix with other ingredients.

[0054] The components of each reagent in S1 are:

[0055] Chloroauric acid solution 3g / L;

[0056] Sodium thiosulfate solution 10g / L;

[0057] GSH 30 g / L;

[0058] Potassium hydroxide 20g / L;

[0059] 5% by mass of dilute sulfuric acid.

[0060] HAu(GSH) in S2 2 The preparation method is as follows:

[0061] S21: mixing a chloroauric acid solution and a sodium thiosulfate solution at a molar ratio of SO ions to Au ions of 7:3, and stirring to obtain a solution A;

[0062] S22: GSH and the solution A prepared in step S21 are mixed at a molar ratio of GSH to Au ions of 2:1, and stirred to obtain a solution B;

[0063] S23: mixing potassium hydroxide and solution B prepared in step S22 until the pH value is adjusted to 8.5, and stirring evenly to obtain solution C;

[0064] S24: Mix 5% by mass of dilute sulfuric acid and solution 3 prepared in step IV until the pH value is adjusted to 3, stir evenly, centrifuge, filter and wash to obtain HAu(GSH) 2 .

[0065] In one embodiment of the present invention, other components in S3 include 30 g / L GSH, 8 g / L hydroxyethylidene diphosphonic acid, 25 g / L potassium hydroxide, distilled water as solvent, and a pH value of 9.5.

[0066] Embodiment 2:

[0067] See also Figure 1 The present invention provides a method for preparing a green and sustainable cyanide-free gold plating solution, which comprises the following steps:

[0068] S1: Preparation of HAu(GSH) 2 Required reagents: chloroauric acid solution, sodium thiosulfate solution, GSH, potassium hydroxide, dilute sulfuric acid;

[0069] S2: Preparation of HAu(GSH) 2 HAu(GSH) was obtained by preparing each component in sequence, stirring evenly, centrifuging, filtering and washing. 2 ;

[0070] S3: Prepare gold plating solution and add the obtained HAu(GSH) 2 Mix with other ingredients.

[0071] The components of each reagent in S1 are:

[0072] Chloroauric acid solution 4g / L;

[0073] Sodium thiosulfate solution 12g / L;

[0074] GSH 33 g / L;

[0075] Potassium hydroxide 22g / L;

[0076] 5% by mass of dilute sulfuric acid.

[0077] HAu(GSH) in S2 2 The preparation method is as follows:

[0078] S21: mixing a chloroauric acid solution and a sodium thiosulfate solution at a molar ratio of SO ions to Au ions of 7:3, and stirring to obtain a solution A;

[0079] S22: GSH and the solution A prepared in step S21 are mixed at a molar ratio of GSH to Au ions of 2:1, and stirred to obtain a solution B;

[0080] S23: mixing potassium hydroxide and solution B prepared in step S22 until the pH value is adjusted to 9, and stirring evenly to obtain solution C;

[0081] S24: Mix 5% by mass of dilute sulfuric acid and solution 3 prepared in step IV until the pH value is adjusted to 4, stir evenly, centrifuge, filter and wash to obtain HAu(GSH) 2 .

[0082] In one embodiment of the present invention, other components in S3 include 30-35 g / L GSH, 10 g / L hydroxyethylidene diphosphonic acid, 28 g / L potassium hydroxide, distilled water as solvent, and a pH value of 10.

[0083] Embodiment three:

[0084] See also Figure 1 The present invention provides a method for preparing a green and sustainable cyanide-free gold plating solution, which comprises the following steps:

[0085] S1: Preparation of HAu(GSH) 2 Required reagents: chloroauric acid solution, sodium thiosulfate solution, GSH, potassium hydroxide, dilute sulfuric acid;

[0086] S2: Preparation of HAu(GSH) 2 HAu(GSH) was obtained by preparing each component in sequence, stirring evenly, centrifuging, filtering and washing. 2 ;

[0087] S3: Prepare gold plating solution and add the obtained HAu(GSH) 2 Mix with other ingredients.

[0088] The components of each reagent in S1 are:

[0089] Chloroauric acid solution 5g / L;

[0090] Sodium thiosulfate solution 14g / L;

[0091] GSH 35 g / L;

[0092] Potassium hydroxide 24g / L;

[0093] 5% by mass of dilute sulfuric acid.

[0094] HAu(GSH) in S2 2 The preparation method is as follows:

[0095] S21: mixing a chloroauric acid solution and a sodium thiosulfate solution at a molar ratio of SO ions to Au ions of 7:3, and stirring to obtain a solution A;

[0096] S22: GSH and the solution A prepared in step S21 are mixed at a molar ratio of GSH to Au ions of 2:1, and stirred to obtain a solution B;

[0097] S23: mixing potassium hydroxide and solution B prepared in step S22 until the pH value is adjusted to 9.5, and stirring evenly to obtain solution C;

[0098] S24: Mix 5% by mass of dilute sulfuric acid and solution 3 prepared in step IV until the pH value is adjusted to 5, stir evenly, centrifuge, filter and wash to obtain HAu(GSH) 2 .

[0099] In one embodiment of the present invention, other components in S3 include 35 g / L GSH, 12 g / L hydroxyethylidene diphosphonic acid, 30 g / L potassium hydroxide, distilled water as solvent, and a pH value of 10.5.

[0100] Furthermore, if Figure 2-8 As shown, a green and sustainable cyanide-free gold plating solution preparation device, the preparation method adopts a preparation device, including:

[0101] Preparation cylinder 1;

[0102] The outer cylinder 2 is fixedly connected to the outer side of the preparation cylinder 1 through a connecting ring plate 11, and four pillars 21 are evenly arranged and fixedly connected to the bottom circumference;

[0103] The ramp 24 is fixedly connected to the bottom inner wall of the outer tube 2;

[0104] The bottom plate 43 is fixedly connected to the inner wall of the bottom end of the preparation cylinder 1;

[0105] A discharging mechanism is provided on the bottom plate 43;

[0106] The discharging mechanism includes a third motor 65 fixedly connected to the bottom of the base plate 43, the output shaft of the third motor 65 is rotatably connected to the base plate 43 through a bearing, the output shaft of the third motor 65 is fixedly connected to a reciprocating screw 64, the reciprocating screw 64 is threadedly connected to a sealing plate 6, and the sealing plate 6 cooperates with a placement groove at the top of the base plate 43; a sieve basket 61 is fixedly connected to the bottom of the sealing plate 6, and a first sealing ring 62 and a second sealing ring 63 are respectively fixedly connected to the two ends of the sieve basket 61; a plurality of water outlets 66 and discharging ports 67 are arranged circumferentially on the sieve basket 61, wherein the water outlet 66 is smaller than the caliber of the discharging port 67 and is arranged above the discharging port 67; the bottom of the preparation barrel 1 is connected and fixedly connected to a discharging pipe 15, and a first solenoid valve 16 is installed on the discharging pipe 15; four nozzles 510 are arranged circumferentially above the preparation barrel 1.

[0107] HAu(GSH) 2 During the preparation process, solids are formed by centrifugation, which is not convenient to extract through the extraction tube, and HAu(GSH) 2 There is some residual solution on the surface, which needs to be washed and filtered. The device is not convenient for washing, filtering water and HAu(GSH) 2 Discharging, when the discharging mechanism provided by the present invention is used, HAu(GSH) 2 After centrifugation, solid matter is formed, and water is sprayed out through the nozzle 510 to wash the solid matter. During the washing process, the third motor 65 is turned on, and the third motor 65 drives the reciprocating screw 64 to rotate through the output shaft, and the sealing plate 6 is driven to move upward through the reciprocating screw 64, and the sieve basket 61 is driven to move upward through the sealing plate 6. During the movement of the sieve basket 61, the water outlet 66 moves to the top of the bottom plate 43, and the washing water flows down through the water outlet 66. At this time, the first solenoid valve 16 is opened, and the water flows out through the discharge pipe 15, and finally discharged through the discharge pipe 22; after the washing is completed, the third motor 65 is continued to be driven to rotate, and the sealing plate 6 continues to move upward through the third motor 65 until the second sealing ring 63 contacts the bottom plate 43, and the discharge port 67 moves to the top of the bottom plate 43, HAu (GSH) 2 The material is discharged through the discharge port 67, and finally discharged through the discharge pipe 15 and the discharge pipe 22, thus achieving rapid HAu(GSH) 2 The function of discharging materials.

[0108] Furthermore, if Figure 2 As shown, a second motor 4 is fixedly connected to the top of the preparation cylinder 1, and an output shaft of the second motor 4 is rotatably connected to the preparation cylinder 1 through a bearing. The output shaft of the second motor 4 is fixedly connected to a rotating rod 41, and a plurality of stirring paddles 42 are fixedly connected to the rotating rod 41; the top of the reciprocating screw 64 is rotatably connected to the bottom of the rotating rod 41 through a bearing.

[0109] When the stirring paddle 42 provided by the present invention is in use, the second motor 4 is turned on, and the output shaft of the second motor 4 drives the rotating rod 41 to rotate, and the rotating rod 41 drives the stirring paddle 42 to rotate, and the stirring paddle 42 is used to stir the components evenly, thereby realizing the function of rapid stirring and improving the preparation efficiency.

[0110] Furthermore, if Figure 3 , Figure 5 and Figure 6 As shown, the top of the preparation cylinder 1 is rotatably connected to a water diversion box 51 through a bearing, the top of the water diversion box 51 is connected and fixedly connected to a water inlet pipe 5, the bottom of the water diversion box 51 is rotatably connected to a water outlet box 52 through a bearing, the water outlet box 52 is fixedly connected to a rotating rod 41, a circular plate 54 is fixedly connected to the rotating rod 41, four sliding openings 55 are opened on the circular plate 54, two sliding rods 57 are fixedly connected in the sliding openings 55, two sliding rods 57 are slidably connected to sliders 56, the sliders 56 are connected and fixedly connected to a water outlet pipe 59, the top of the water outlet pipe 59 is connected and fixedly connected to the water outlet box 52 through a hose 53; the spray heads 510 are rotatably connected to the bottom of the water outlet pipe 59 through a bearing, and an impeller 511 is fixedly connected in the spray heads 510 through a connecting rod; a spring 58 is sleeved on the sliding rod 57, and the two ends of the spring 58 are respectively fixedly connected to the slider 56 and the circular plate 54.

[0111] When the water inlet box 51, the water outlet box 52 and the nozzle 510 provided by the present invention are in use, water enters the water inlet box 51 through the water inlet pipe 5, the water in the water inlet box 51 is discharged through the water outlet box 52, and the water in the water outlet box 52 is finally sprayed into the preparation tube 1 through the hose 53, the water outlet pipe 59 and the nozzle 510. At this time, the second motor 4 is turned on, and the rotating rod 41 is driven by the second motor 4 to rotate, and the rotating rod 41 drives the circular plate 54 and the water outlet box 52 to rotate, and the circular plate 54 drives the slider 56 and the nozzle 510 to rotate. The centrifugal force exerted on the nozzle 510 during rotation is different due to different speed adjustment of the second motor 4. When the speed is faster, the centrifugal force is large. With the cooperation of the spring 58 and the slider 56, the nozzle 510 moves outward. On the contrary, when the speed is slower, the centrifugal force is small, and the nozzle 510 moves inward, thereby adjusting the position of the nozzle 510 to fully adjust the HAu(GSH) in the preparation tube 1. 2 When the water flows through the nozzle 510, since the nozzle 510 is provided with an impeller 511, the impeller 511 rotates under the water flow, and the impeller 511 drives the nozzle 510 to rotate through the connecting rod. When the nozzle 510 rotates, the water is sprayed out to increase the spray range and improve the washing effect.

[0112] Furthermore, if Figure 4As shown, a gear ring 14 is fixedly connected to the outer wall of the preparation cylinder 1, a first motor 12 is fixedly connected to the connecting ring plate 11, an output shaft of the first motor 12 is rotatably connected to the connecting ring plate through a bearing, and a gear 13 is fixedly connected thereto, and the gear 13 is meshed with the gear ring 14.

[0113] When the gear 13 and the gear ring 14 provided by the present invention are in use, centrifugation is required after the preparation is completed. The first motor 12 is turned on, and the output shaft of the first motor 12 drives the gear 13 to rotate, and the gear ring 14 is driven to rotate by the rotating wheel, and the gear ring 14 drives the preparation barrel 1 to rotate, thereby achieving centrifugation; and during the discharging process, in order to speed up the discharging speed, the preparation barrel 1 can also be driven to rotate.

[0114] Furthermore, if Figure 3 As shown, a fixing plate 31 is fixedly connected to the side wall of the preparation barrel 1, and the fixing plate 31 is connected and fixedly connected to the feeding barrel 3. The bottom end of the feeding barrel 3 is connected and fixedly connected to the preparation pipe through a discharge pipe, a third solenoid valve 32 is installed on the connecting pipe, and a plug 33 is inserted at the top of the feeding barrel 3.

[0115] When the feeding barrel 3 provided by the present invention is used, each reagent component can be put into the feeding barrel 3 in sequence to complete the HAu(GSH) 2 The plug 33 is configured to prevent dust from falling in.

[0116] Furthermore, if Figure 3 As shown, a ramp 24 is fixedly connected to the inner wall of the bottom of the outer cylinder 2, and a discharge pipe 22 is connected and fixedly connected to the side wall of the outer cylinder 2. A second solenoid valve 23 is installed on the discharge pipe 22, and the discharge pipe 22 is arranged at the lower end of the ramp 24.

[0117] The ramp 24 provided by the present invention is used to accelerate the reaction of water and HAu (GSH) when in use. 2 The flow of water and HAu (GSH) is completed by opening the second solenoid valve 23. 2 Flow out through the discharge pipe 22.

[0118] Working Principle: HAu(GSH) 2After centrifugation, solid matter is formed, and water is sprayed out through the nozzle 510 to wash the solid matter. During the washing process, the third motor 65 is turned on, and the third motor 65 drives the reciprocating screw 64 to rotate through the output shaft, and the sealing plate 6 is driven to move upward through the reciprocating screw 64, and the sieve basket 61 is driven to move upward through the sealing plate 6. During the movement of the sieve basket 61, the water outlet 66 moves to the top of the bottom plate 43, and the washing water flows down through the water outlet 66. At this time, the first solenoid valve 16 is opened, and the water flows out through the discharge pipe 15, and finally discharged through the discharge pipe 22; after the washing is completed, the third motor 65 is continued to be driven to rotate, and the sealing plate 6 continues to move upward through the third motor 65 until the second sealing ring 63 contacts the bottom plate 43, and the discharge port 67 moves to the top of the bottom plate 43, HAu (GSH) 2 The material is discharged through the discharge port 67, and finally discharged through the discharge pipe 15 and the discharge pipe 22, thus achieving rapid HAu(GSH) 2 Function of discharging materials;

[0119] Water enters the water diversion box 51 through the water inlet pipe 5, and the water in the water diversion box 51 is discharged through the water outlet box 52. The water in the water outlet box 52 passes through the hose 53, the water outlet pipe 59 and the nozzle 510 and is finally sprayed into the preparation tube 1. At this time, the second motor 4 is turned on, and the second motor 4 drives the rotating rod 41 to rotate, and the rotating rod 41 drives the circular plate 54 and the water outlet box 52 to rotate, and the circular plate 54 drives the slider 56 and the nozzle 510 to rotate. The centrifugal force of the nozzle 510 during rotation is different due to the different speed adjustment of the second motor 4. When the speed is fast, the centrifugal force is large. With the cooperation of the spring 58 and the slider 56, the nozzle 510 moves outward. On the contrary, when the speed is slow, the centrifugal force is small, and the nozzle 510 moves inward, thereby adjusting the position of the nozzle 510 to fully adjust the HAu (GSH) in the preparation tube 1. 2 When the water flows through the nozzle 510, the nozzle 510 is provided with an impeller 511, and the impeller 511 rotates under the water flow. The impeller 511 drives the nozzle 510 to rotate through the connecting rod. When the nozzle 510 rotates, water is sprayed out, thereby increasing the spray range and improving the washing effect.

[0120] After the preparation is completed, centrifugation is required. The first motor 12 is turned on, and the output shaft of the first motor 12 drives the gear 13 to rotate, and the gear ring 14 is driven to rotate by the rotating wheel, and the gear ring 14 drives the preparation barrel 1 to rotate, thereby achieving centrifugation; and in the process of discharging, in order to speed up the discharging speed, the preparation barrel 1 can also be driven to rotate.

[0121] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.

Claims

1. A method for preparing a green and sustainable cyanide-free gold plating solution, characterized in that: The preparation method comprises the following steps: S1: Prepare the reagents required for the preparation of HAu(GSH)2: chloroauric acid solution, sodium thiosulfate solution, GSH, potassium hydroxide, and dilute sulfuric acid; S2: preparing HAu(GSH)2, by preparing each component in sequence, stirring evenly, centrifuging, filtering and washing to obtain HAu(GSH2); S3: Prepare a gold plating solution and mix the obtained HAu(GSH)2 with other components.

2. A method for preparing a green and sustainable cyanide-free gold plating solution according to claim 1, characterized in that: The components of each reagent in S1 are: Chloroauric acid solution 3-5g / L; Sodium thiosulfate solution 10-14 g / L; GSH 30-35 g / L; Potassium hydroxide 20-24 g / L; 5% by mass of dilute sulfuric acid.

3. A method for preparing a green and sustainable cyanide-free gold plating solution according to claim 2, characterized in that: The preparation method of HAu(GSH)2 in S2 is as follows: S21: mixing a chloroauric acid solution and a sodium thiosulfate solution at a molar ratio of SO ions to Au ions of 7:3, and stirring to obtain a solution A; S22: GSH and the solution A prepared in step S21 are mixed at a molar ratio of GSH to Au ions of 2:1, and stirred to obtain a solution B; S23: mixing potassium hydroxide and solution B prepared in step S22 until the pH value is adjusted to 8.5-9.5, and stirring evenly to obtain solution C; S24: Mix 5% by mass of dilute sulfuric acid and solution 3 prepared in step IV until the pH value is adjusted to 3-5, stir evenly, centrifuge, filter and wash to obtain HAu(GSH)2.

4. A method for preparing a green and sustainable cyanide-free gold plating solution according to claim 3, characterized in that: Other components in the S3 include 30-35 g / L of GSH, 8-12 g / L of hydroxyethylidene diphosphonic acid, 30 g / L of potassium hydroxide, distilled water as solvent, and a pH value of 9.5-10.

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5. A green and sustainable cyanide-free gold plating solution preparation device, suitable for the green and sustainable cyanide-free gold plating solution preparation method according to claims 1-4, characterized in that: The configuration device used in the configuration method includes: Preparation cylinder (1); The outer cylinder (2) is fixedly connected to the outer side of the preparation cylinder (1) through a connecting ring plate (11), and four pillars (21) are evenly arranged and fixedly connected to the bottom of the cylinder; A ramp (24) is fixedly connected to the bottom inner wall of the outer cylinder (2); A bottom plate (43) is fixedly connected to the inner wall of the bottom end of the preparation cylinder (1); A discharging mechanism, arranged on the bottom plate (43); The discharging mechanism comprises a third motor (65) fixedly connected to the bottom of the bottom plate (43); the output shaft of the third motor (65) is rotatably connected to the bottom plate (43) via a bearing; the output shaft of the third motor (65) is fixedly connected to a reciprocating screw rod (64); a sealing plate (6) is threadedly connected to the reciprocating screw rod (64); the sealing plate (6) cooperates with a placement groove at the top of the bottom plate (43); a sieve basket (61) is fixedly connected to the bottom of the sealing plate (6); two ends of the sieve basket (61) are respectively A first sealing ring (62) and a second sealing ring (63) are fixedly connected; a plurality of water outlets (66) and material outlets (67) are arranged circumferentially on the sieve basket (61), wherein the water outlet (66) is smaller than the diameter of the material outlet (67) and is arranged above the material outlet (67); a material outlet pipe (15) is connected and fixedly connected to the bottom of the preparation cylinder (1), and a first solenoid valve (16) is installed on the material outlet pipe (15); four nozzles (510) are arranged circumferentially above the preparation cylinder (1).

6. A green and sustainable cyanide-free gold plating solution preparation device according to claim 5, characterized in that: A second motor (4) is fixedly connected to the top of the preparation cylinder (1); an output shaft of the second motor (4) is rotatably connected to the preparation cylinder (1) via a bearing; the output shaft of the second motor (4) is fixedly connected to a rotating rod (41); a plurality of stirring paddles (42) are fixedly connected to the rotating rod (41); and a top of the reciprocating screw (64) is rotatably connected to a bottom of the rotating rod (41) via a bearing.

7. A green and sustainable cyanide-free gold plating solution preparation device according to claim 6, characterized in that: The top of the preparation tube (1) is rotatably connected to a water diversion box (51) via a bearing, the top of the water diversion box (51) is connected and fixedly connected to a water inlet pipe (5), the bottom of the water diversion box (51) is rotatably connected to a water outlet box (52) via a bearing, the water outlet box (52) is fixedly connected to a rotating rod (41), a circular plate (54) is fixedly connected to the rotating rod (41), four sliding openings (55) are opened on the circular plate (54), two sliding rods (57) are fixedly connected to the sliding openings (55), and the two sliding rods (57) are both A slider (56) is slidably connected, and the slider (56) is connected and fixedly connected with a water outlet pipe (59), and the top of the water outlet pipe (59) is connected and fixedly connected to the water outlet box (52) through a hose (53); the spray head (510) is rotatably connected to the bottom of the water outlet pipe (59) through a bearing, and an impeller (511) is fixedly connected inside the spray head (510) through a connecting rod; a spring (58) is sleeved on the sliding rod (57), and the two ends of the spring (58) are respectively fixedly connected to the slider (56) and the circular plate (54).

8. A green and sustainable cyanide-free gold plating solution preparation device according to claim 7, characterized in that: The outer wall of the preparation cylinder (1) is fixedly connected with a gear ring (14), and the connecting ring plate (11) is fixedly connected with a first motor (12). The output shaft of the first motor (12) is rotatably connected to the connecting ring plate through a bearing and is fixedly connected with a gear (13), and the gear (13) is meshed with the gear ring (14).

9. A green and sustainable cyanide-free gold plating solution preparation device according to claim 8, characterized in that: A fixing plate (31) is fixedly connected to the side wall of the preparation barrel (1), and a feed barrel (3) is connected and fixedly connected to the fixing plate (31). The bottom end of the feed barrel (3) is connected and fixedly connected to the preparation pipe via a discharge pipe, and a third solenoid valve (32) is installed on the connecting pipe. A plug (33) is inserted at the top of the feed barrel (3).

10. The green and sustainable cyanide-free gold plating solution preparation device according to claim 9, characterized in that: A ramp (24) is fixedly connected to the inner wall of the bottom of the outer cylinder (2). A discharge pipe (22) is connected and fixedly connected to the side wall of the discharge pipe, and a second solenoid valve (23) is installed on the discharge pipe (22). The discharge pipe (22) is arranged at the lower end of the ramp (24).

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