Silver potassium cyanide dispensing device

Abstract

The utility model discloses a kind of silver cyanide potassium batching devices, mainly include: filter pump, discharge port, feed inlet, electric mixer, electric heating rod, temperature controller, water injection valve, water inlet, batching box, charging port, scale ball valve, exhaust hood, silk screen demister, pipeline fan, activated carbon waste gas treatment box, filter pump is movably connected with the feed inlet and discharge port of batching box by pipeline;Electric mixer is movably connected with the cover of batching box;Electric heating rod is fixedly connected with the cover of batching box, and electric heating rod is connected in series with temperature controller;Water injection valve is movably connected with water inlet by hose;Batching box upper end is opened with the cover of charging port, the online filtration of silver cyanide potassium solution in the application, dilution, dissolution and waste gas collection, form closed-loop control system, ensure silver cyanide potassium stability in batching process, significantly improve electroplating quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the principles of liquid circulation filtration, temperature control, and waste gas collection, and is a silver potassium cyanide batching device. Technical Background

[0002] In the industrial production of silver electroplating, potassium silver cyanide is a key electroplating raw material. Its stability in the plating bath directly affects the quality, uniformity, and production efficiency of the electroplated layer. Traditional methods of preparing potassium silver cyanide rely heavily on manual operation, which has the following significant drawbacks: During manual stirring, the solution is prone to splashing; if it comes into contact with skin, potassium silver cyanide can be rapidly absorbed, posing a safety hazard and increasing the risk of poisoning. Industrial potassium silver cyanide often contains impurities and is added directly without filtration, easily contaminating the plating bath and affecting electroplating quality. The toxic gas generated during the preparation of potassium silver cyanide is mainly hydrogen cyanide; trace amounts of hydrogen cyanide gas are released when the solution is heated, at excessively high concentrations, or during hydrolysis. Therefore, to avoid the risks posed by toxic gases during the preparation process, strict sealing and venting measures must be implemented to prevent accidents. Furthermore, the dissolution efficiency of potassium silver cyanide during electroplating is easily affected by temperature; the temperature needs to be precisely controlled at 50℃ to ensure sufficient dissolution. Therefore, in the process of preparing potassium silver cyanide, the hazards of manual stirring, impurities, and the generation of toxic gases must be taken very seriously. There is an urgent need for a precise and safe batching device to solve the problems of low production efficiency, poor safety, and toxic gas hazards in the existing technology. Utility Model Content

[0003] The purpose of this invention is to address the risks and toxic gas hazards associated with manual mixing of potassium silver cyanide in the current industrial process. This invention designs a mixing device to replace manual stirring, avoiding solution splashing and poisoning risks. Simultaneously, it filters raw material impurities to prevent plating solution contamination, effectively collects hydrogen cyanide gas generated during the mixing process to eliminate production safety hazards, and precisely controls the dissolution temperature to 50°C to ensure complete dissolution. This achieves precision and safety in the mixing process, improves production efficiency and electroplating quality, and reduces the risks associated with manual operation.

[0004] The technical solution of this utility model is: a silver potassium cyanide batching device, mainly comprising: a filter pump, a discharge port, a feed port, an electric stirrer, an electric heating rod, a temperature controller, a water injection valve, a water injection port, a batching box, a feeding port, a graduated ball valve, an exhaust hood, a wire mesh demister, a pipeline fan, and an activated carbon waste gas treatment box. Its features are: the filter pump is movably connected to the feed port and discharge port of the batching box via a pipeline; the electric stirrer is movably connected to the top cover of the batching box; the electric heating rod is fixedly connected to the top cover of the batching box and is connected in series with the temperature controller; the water injection valve is movably connected to the water injection port via a hose; the top of the batching box has a feeding port with a cover, and a pipeline on the side of the batching box is fixedly connected to the graduated ball valve; the exhaust hood is movably connected to the batching box via a buckle; the wire mesh demister is fixedly connected to the exhaust pipeline; and at the top of the wire mesh demister, the pipeline fan is fixedly connected to the activated carbon waste gas treatment box via a pipeline.

[0005] The electric stirrer (ZJ-900) dissolves the ingredients thoroughly by rotating the paddle. It is mainly used to transfer the heat from local high-temperature areas to the entire container through stirring, avoiding local overheating or uneven temperature caused by standing.

[0006] The electric heating rod (GL-2000) can quickly heat the potassium silver cyanide in the mixing tank to 50°C.

[0007] The temperature controller (DR-13) has a temperature sensor that can detect the solution temperature in real time. When the temperature is below 50°C, it sends a signal to the electric heating rod to start heating. When the temperature reaches the set value, it controls the heating element to stop working, thus achieving precise temperature control.

[0008] The mixing tank has a top cover for preparing the potassium silver cyanide solution required for frame electroplating, which can prevent potassium silver cyanide from splashing. The cover has a water inlet, a material inlet, a feeding inlet, and an exhaust outlet.

[0009] The graduated ball valve (DN15-DN100) is located 15 cm from the bottom on the side of the batching box. It can intuitively display the valve opening degree, thereby realizing precise control of the batching flow rate. The valve can be opened and closed and the opening degree can be adjusted by rotating the valve.

[0010] The aforementioned duct fan (BXF-100) uses an explosion-proof motor to prevent electrical sparks from reacting with flammable gases and causing an explosion during operation. It can continuously pump trace amounts of hydrogen cyanide gas generated in the mixing tank to subsequent treatment devices, achieving targeted collection of toxic gases.

[0011] The demister is used to separate potassium silver cyanide liquid entrained in the exhaust gas. It can effectively remove droplets larger than 3μm. When the gas carrying water mist passes through the wire mesh, the droplets collide with the mesh and adhere to the surface of the fine filaments. The droplets on the filament surface accumulate on the filaments, and due to their own gravity, they separate from the filaments and fall back to the mixing tank. After the gas passes through the demister, it is basically free of mist, thus achieving the purpose of gas-liquid separation.

[0012] The activated carbon waste gas treatment box (HXT-FL1000B) can use modified alkaline activated carbon. Utilizing the adsorption properties of activated carbon, through physical adsorption and chemical adsorption, it can centrally treat the trace amounts of hydrogen cyanide gas generated in the mixing tank and meet the emission standards.

[0013] The water inlet is used to introduce deionized water to dilute potassium silver cyanide. The deionized water has a conductivity of 0.055 μs / cm-0.2 μs / cm and a resistivity of 18.2 MΩ·cm-5 MΩ·cm.

[0014] Preferably, the filter pump (SF2004PUNBJ) is integrally molded from PP material, with few welding points, strong leak-proof performance, and features high temperature resistance and acid and alkali corrosion resistance. The conveying pipeline connected to the filter pump and the batching box are connected by flanges and bolts, which can achieve quick disassembly and facilitate maintenance and cleaning.

[0015] Preferably, the electric mixer (ZJ-900) is highly efficient, with a single-stage transmission reduction ratio of 9-87 and a double-stage transmission reduction ratio of 121-7569. It operates smoothly, has strong overload capacity, low vibration and noise, and is made of high-carbon alloy steel with quenching treatment (HRC58-62), resulting in a low coefficient of friction and durability.

[0016] Preferably, the electric heating rod (GL-2000) is made of titanium alloy, which is resistant to acid and alkali corrosion and does not easily rust, and has a fast heating speed.

[0017] Preferably, the temperature controller (DR-13) has an electric heating rod connected to the three-hole socket of the temperature controller via a wire. The heating temperature of the electric heating rod can be set. It has a built-in temperature sensing probe and is placed in the mixing box together with the heating rod.

[0018] Preferably, the mixing box is made of PP material, which has good chemical corrosion resistance.

[0019] Preferably, the graduated ball valve (DN15-DN100) is made of stainless steel, has a graduated dial pointer, is formed by high-temperature stretching, has a low coefficient of friction, is corrosion resistant and has good sealing performance.

[0020] Preferably, the duct fan (BXF-100) is made of ABS flame-retardant material, and the fan blades will not produce collision sparks. It is connected to the exhaust pipe by a snap-fit.

[0021] Preferably, the demister is composed of a wire mesh, a wire mesh grid forming a wire mesh block, and a support device for fixing the wire mesh block. The wire mesh is made of PP material with a moderate pore density.

[0022] Preferably, the activated carbon exhaust gas treatment box (HXT-FL 1000B) consists of an air inlet filtration section and an air outlet section. Exhaust gas enters the box from the air inlet, and the purified exhaust gas that meets the standards is discharged into the high atmosphere through a fan and an exhaust pipe.

[0023] Compared with existing technologies, the advantages of this invention are: continuous circulating filtration and stable temperature control, which greatly improves the dissolution efficiency of potassium silver cyanide and reduces the frequency of solution replacement due to impurity accumulation or compositional imbalance, significantly reducing production costs for enterprises. Centralized waste gas collection and treatment meet the emission limits for hydrogen cyanide in the "Electroplating Pollutant Emission Standard" (GB21900-2008), ensuring compliance with environmental assessment requirements for waste gas emissions. It has broad industrial application prospects and significant value for technology promotion. This device improves the safety of the batching process, completely replacing the high-risk operation of manual stirring and contact with splashing potassium silver cyanide, reducing the risk of direct contact by more than 90%.

[0024] This device is mainly used for the batching of potassium silver cyanide. The batching tank is a closed tank, and the required amount of solid potassium silver cyanide is added at the feeding port. The filter pump's pipeline is connected to the inlet and outlet of the batching tank using flanges and bolts for easy movement and maintenance. The filter pump removes solid impurities (such as particulate matter, crystals, and raw material residue) from the potassium silver cyanide batching solution through circulating filtration, effectively filtering out impurities and insoluble crystals in the batching tank, preventing contamination of the plating solution when added later. The combination of an electric heating rod and a temperature controller maintains a constant temperature (50℃) in the potassium silver cyanide batching tank, precisely controlling the temperature of the heating element, which is beneficial for the complete dissolution of potassium silver cyanide. The electric stirrer achieves high-efficiency dissolution through stirring, avoiding splashing that could harm workers' health during manual stirring. An exhaust pipe is opened at the top of the batching tank. Utilizing the principle that hydrogen cyanide gas is less dense than air and diffuses upwards, the trace amounts of hydrogen cyanide gas generated in the batching tank are collected, separated into gas and liquid, and then discharged through a ventilation pipe to an activated carbon waste gas treatment tank for centralized management. By coordinating multiple modules such as filtration, temperature control, electric stirring, waste gas collection, and waste gas treatment, the system achieves online filtration, dilution, dissolution, and waste gas collection of potassium silver cyanide solution, forming a closed-loop control system. This ensures the stability of potassium silver cyanide during the batching process, significantly improves electroplating quality and production efficiency, and enables intelligent management of process parameters. While improving product quality and production efficiency, it also reduces safety and health risks. Attached Figure Description

[0025] Figure 1 This is a simplified structural diagram of the silver potassium cyanide batching device of this utility model; Figure 1 The components are as follows: 1. Filter pump, 2. Discharge port, 3. Feed port, 4. Electric agitator, 5. Electric heating rod, 6. Thermostat, 7. Water injection valve, 8. Water injection port, 9. Batching box, 10. Feeding port, 11. Graduated ball valve, 12. Exhaust hood, 13. Wire mesh demister, 14. Pipeline fan, 15. Activated carbon waste gas treatment box. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] (The filter pump (SF2004PUNBJ), electric stirrer (ZJ-900), electric heating rod (GL-2000), thermostat (DR-13), graduated ball valve (316-DN25), duct fan (BXF-100), and activated carbon exhaust gas treatment box (HXT-FL 1000B) mentioned above can all be obtained from the market or private orders.)

[0028] The mixing tank is a closed container; the required amount of potassium silver cyanide is added at the feeding port. The filter pump's pipeline is connected to the mixing tank's inlet and outlet using flanges and bolts for easy movement and maintenance. The filter pump removes solid impurities (such as particulate matter, crystals, and raw material residue) from the potassium silver cyanide mixing solution through circulating filtration, effectively filtering out impurities and insoluble crystals, preventing contamination of the plating solution when added later. The combination of an electric heating rod and a temperature controller maintains a constant temperature (50℃) in the potassium silver cyanide mixing tank, precisely controlling the heating element temperature for complete dissolution. An electric stirrer ensures efficient dissolution, avoiding splashing that can harm workers during manual stirring. An exhaust pipe is located at the top of the mixing tank. Utilizing the principle that hydrogen cyanide gas, being less dense than air, diffuses upwards, the trace amounts of hydrogen cyanide gas generated in the mixing tank are collected, separated into gas and liquid phases, and then discharged through a ventilation duct to an activated carbon waste gas treatment box for centralized management. By coordinating multiple modules such as filtration, temperature control, electric stirring, waste gas collection, and waste gas treatment, the system achieves online filtration, dilution, dissolution, and waste gas collection of potassium silver cyanide solution, forming a closed-loop control system. This ensures the stability of potassium silver cyanide during the batching process, significantly improves electroplating quality and production efficiency, and enables intelligent management of process parameters. While improving product quality and production efficiency, it also reduces safety and health risks.

[0029] The filter pump efficiently filters solid impurities (such as particulate matter, crystals, and raw material residues) from the potassium silver cyanide solution using a filter element, removing impurity particles and insoluble crystals to prevent contamination of the plating solution. The electric stirrer, through paddle rotation, thoroughly dissolves the ingredients and primarily transfers heat from localized high-temperature areas to the entire container, preventing localized overheating or uneven temperature distribution caused by static conditions. The electric heating rod connects to the three-prong plug of the temperature controller via wires, rapidly heating the potassium silver cyanide in the mixing tank to 50°C. The temperature controller's temperature sensor detects the solution temperature in real time; when the temperature drops below 50°C, it sends a signal to the heating rod to activate heating. When the set temperature is reached, the heating element stops working, achieving precise temperature control. The graduated ball valve visually displays the valve opening, enabling precise control of the mixing flow rate; simply rotating the valve opens and closes it, and adjusts the opening. The duct fan uses an explosion-proof motor to prevent electrical sparks from reacting with flammable gases and causing an explosion. The system can continuously pump trace amounts of hydrogen cyanide gas generated in the mixing tank to subsequent processing devices, achieving targeted collection of toxic gases. The demister is used to separate liquid silver potassium cyanide entrained in the exhaust channel, effectively removing droplets larger than 3μm. When gas carrying water mist passes through the wire mesh, the mist particles collide with the mesh and adhere to the surface of the fine filaments. The mist particles on the surface of the filaments accumulate on the filaments, and due to their own gravity, they separate from the filaments and fall back into the mixing tank. After the gas passes through the demister, it is essentially free of mist, thus achieving gas-liquid separation. The activated carbon exhaust gas treatment box (HXT-FL 1000B) can use modified alkaline activated carbon. Utilizing the adsorption properties of activated carbon, through physical and chemical adsorption, it can centrally treat the trace amounts of hydrogen cyanide gas generated in the mixing tank and meet emission standards. The water inlet is used to introduce deionized water to dilute potassium silver cyanide. The conductivity of the deionized water used is 0.055μs / cm-0.2μs / cm, and the resistivity is 18.2MΩ·cm-5MΩ·cm.

[0030] It should be further explained that the combination of the electric heating rod and the temperature controller can maintain a constant temperature (50℃) in the potassium silver cyanide mixing tank, which is conducive to the complete dissolution of potassium silver cyanide. The filter pump, as a circulating filtration device, can remove solid impurities (such as particulate matter, crystals, and raw material residues) from the potassium silver cyanide mixing solution, effectively filtering out impurities and insoluble crystals in the mixing tank, and preventing contamination of the plating solution when added later. The electric stirrer can achieve high-efficiency dissolution through stirring, avoiding splashing that may endanger workers' health due to manual stirring. An exhaust pipe is opened at the top of the mixing tank. Taking advantage of the principle that hydrogen cyanide gas is less dense than air and diffuses upwards, the trace amounts of hydrogen cyanide gas generated in the mixing tank are collected, separated into gas and liquid, and then discharged to the activated carbon waste gas treatment tank through the ventilation pipe for unified centralized management. By coordinating multiple modules such as filtration, temperature control, electric stirring, waste gas collection, and waste gas treatment, the system achieves online filtration, dilution, dissolution, and waste gas collection of potassium silver cyanide solution, forming a closed-loop control system. This ensures the stability of potassium silver cyanide during the batching process, significantly improves electroplating quality and production efficiency, and enables intelligent management of process parameters. While improving product quality and production efficiency, it also reduces safety and health risks.

[0031] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A silver potassium cyanide batching device, mainly comprising: The components include: a filter pump (1), an inlet (2), an outlet (3), an electric stirrer (4), an electric heating rod (5), a thermostat (6), a water injection valve (7), a water inlet (8), a batching box (9), a feeding port (10), a graduated ball valve (11), an exhaust hood (12), a wire mesh demister (13), a pipeline fan (14), and an activated carbon waste gas treatment box (15). The filter pump (1) is movably connected to the inlet (2) and outlet (3) of the batching box (9) via a pipeline; the electric stirrer (4) is movably connected to the top cover of the batching box (9); and the electric heating rod (6) is movably connected to the top cover of the batching box (9). 5) The electric heating rod (5) is fixedly connected to the top cover of the mixing box (9), and the temperature controller (6) is connected in series; the water injection valve (7) is movably connected to the water injection port (8) through a hose; the top of the mixing box has a feeding port (10) with a cover, and the side of the mixing box (9) has a pipe that is fixedly connected to the graduated ball valve (11); the exhaust hood (12) is movably connected to the mixing box (9) through a buckle; the wire mesh demister (13) is fixedly connected to the exhaust pipe; at the top of the wire mesh demister (13), the pipe fan (14) is fixedly connected to the activated carbon waste gas treatment box (15) through a pipe.

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