A white zinc electroplating solution temperature control circulating storage device

Abstract

The application discloses a kind of white zinc electroplating electroplating solution temperature control circulation storage devices, it is related to electroplating solution storage technical field, the lower surface of filter plate is symmetrically provided with connecting sleeve rod, the upper surface of fixed plate is provided with the fixed rod for connecting sleeve rod guiding lifting, the inside of connecting sleeve rod is also provided with spring;The side surface of circulation storage box is installed motor, the driving end of motor is sealingly connected with rotating shaft, the outside of rotating shaft is respectively provided with first stirring rod and second stirring rod from top to bottom, the upper end of first stirring rod is connected with top plate, the side surface of circulation storage box is also provided with equipment box for circulating electroplating solution.The application sets up vibration type self-cleaning filter structure, relies on motor-driven rotating shaft rotation, drives top plate periodic push filter plate, cooperates with the elastic rebound action of spring, so that filter plate realizes high-frequency up-and-down vibration, can real-time shake off the impurities such as zinc mud, anode residue etc. retained on the surface of filter plate.

Description

Technical Field

[0001] This invention relates to the field of electroplating solution storage technology, specifically a temperature-controlled circulating storage device for white zinc electroplating solution. Background Technology

[0002] The electroplating solution for white zinc plating is a water-soluble electrolyte used to electroplat zinc on the surface of workpieces to obtain a bright silver-white zinc coating. It is divided into two main categories: alkaline zincate cyanide-free white zinc solution and acidic chloride white zinc solution. It is the core medium in the zinc electroplating process. After the current is applied, zinc ions are reduced and deposited at the cathode of the workpiece to form a bright white zinc layer. When storing the electroplating solution for white zinc plating, it is necessary to perform temperature control treatment to prevent temperature fluctuations from causing the brightener to decompose and the zinc salt to hydrolyze.

[0003] As in the prior art, a Chinese patent discloses a storage device for electroplating solution for white zinc electroplating (authorization announcement number CN215026263U). This patented technology uses a partition plate to divide the storage box into a sedimentation chamber and an output chamber. The sedimentation chamber and the output chamber separate the inlet and outlet liquids, thereby facilitating the temporary isolation of the incoming electroplating solution and allowing impurities to precipitate.

[0004] However, existing storage devices are functionally limited, only providing simple settling and sedimentation functions. They lack precise temperature control and insulation structures, making it impossible to maintain a constant temperature for the white zinc plating solution. Relying solely on natural sedimentation for impurity removal results in low efficiency, failing to effectively remove fine zinc sludge and suspended impurities. Furthermore, these impurities tend to accumulate and remain, leading to long-term contamination of the plating solution. Therefore, those skilled in the art have provided a temperature-controlled circulating storage device for white zinc plating solutions to address the problems mentioned in the background section. Summary of the Invention

[0005] The purpose of this invention is to provide a temperature-controlled circulating storage device for electroplating solution in white zinc electroplating, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A temperature-controlled circulating storage device for white zinc electroplating solution includes a circulating storage tank, a tank plate bolted to the upper surface of the circulating storage tank, and a feed pipe disposed on the upper surface of the tank plate for feeding. Connecting rods are symmetrically arranged on the lower surface of the tank plate. The lower end of the connecting rod is connected to a fixing plate inside the circulating storage tank. A filter plate for filtering the electroplating solution is disposed above the fixing plate on the outside of the connecting rod. Connecting sleeve rods are symmetrically arranged on the lower surface of the filter plate. A fixing rod for guiding and lifting the connecting sleeve rods is disposed on the upper surface of the fixing plate. A spring is also disposed inside the connecting sleeve rod. A motor is installed on one side of the circulating storage tank. The drive end of the motor is sealed and connected to a rotating shaft. A first stirring rod and a second stirring rod are respectively arranged from top to bottom on the outside of the rotating shaft. The upper end of the first stirring rod is connected to a top plate. A device box for circulating electroplating solution is also provided on one side of the circulating storage tank.

[0007] As a further embodiment of the present invention: a circulation pump is provided inside the equipment box, the pumping end of the circulation pump is provided with a pumping pipe for drawing electroplating solution from inside the circulation storage box, and the pumping end of the circulation pump is connected to a drain pipe for discharging electroplating solution into the circulation storage box.

[0008] As a further embodiment of the present invention: ten sets of electric heating tubes are symmetrically arranged inside the heating base plate, and each of the electric heating tubes is electrically connected to an external temperature controller.

[0009] As a further embodiment of the present invention: heat-conducting rods are symmetrically arranged on the upper surface of the heating base plate inside the circulating storage tank, and a heat-insulating plate for keeping the electroplating solution warm is also provided on the inner side of the circulating storage tank.

[0010] As a further embodiment of the present invention: seven cylindrical stirring rods are symmetrically arranged outside the rotating shaft for both the first and second stirring rods, and the outer surface of the top plate is in contact with the lower surface of the filter plate.

[0011] As a further embodiment of the present invention: the lower end of the spring is fixed to the upper end face of the fixing rod, and the upper end of the spring is fixed to the inner top surface of the connecting sleeve rod.

[0012] As a further embodiment of the present invention: a discharge valve is provided on one side of the circulating storage box, and a sealing flange cover is provided at the top of the feed pipe.

[0013] As a further aspect of the present invention: a temperature sensor is installed in the inner cavity of the circulating storage box, and the temperature sensor is connected to a temperature controller, a circulating pump, and an electric heating tube.

[0014] As a further embodiment of the present invention: the motor, circulating pump and electric heating tube are all connected to the PLC control cabinet.

[0015] As a further aspect of the present invention: a PTFE sealing gasket is provided at the connection between the box panel and the circulating storage box.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention features an independent temperature control and insulation mechanism. Through a heating base plate, multiple sets of electric heating tubes, and heat-conducting rods, combined with the insulation board on the inner wall of the box, a closed-loop constant temperature control is formed by temperature sensors and a temperature controller. This can accurately maintain the optimal storage temperature of the white zinc electroplating solution, effectively avoiding the problems of performance degradation of the plating solution at low temperatures and decomposition and failure of brighteners at high temperatures. This significantly improves the storage stability of the plating solution, extends the service life of the electroplating solution, and reduces the cost of reagent replacement and waste liquid treatment.

[0017] 2. The present invention is equipped with a vibration self-cleaning filter structure. Relying on the motor to drive the rotating shaft to rotate, the top plate periodically pushes the filter plate. With the elastic rebound of the spring, the filter plate achieves high-frequency up and down vibration, which can shake off impurities such as zinc mud and anode slag trapped on the surface of the filter plate in real time, and avoid clogging of the filter holes.

[0018] 3. This invention adopts a dual homogenization structure combining stirring and mixing with closed-loop circulation. The double-layer multi-set stirring rods continuously stir the plating solution, breaking the static stratification state of the liquid. At the same time, the circulation pump drives the plating solution to continuously extract and circulate back, so that the temperature and concentration of the plating solution inside the tank are uniform and consistent, eliminating the problem of local sedimentation or accumulation of brighteners and complexing agents, and ensuring the stability of the plating solution performance after long-term storage. Attached Figure Description

[0019] Figure 1 A schematic diagram of a temperature-controlled circulating storage device for white zinc electroplating solution; Figure 2 A schematic diagram of the equipment box in a temperature-controlled circulating storage device for white zinc electroplating solution; Figure 3 for Figure 1 Front view; Figure 4 This is a schematic diagram of the filter plate in a temperature-controlled circulating storage device for white zinc electroplating solution. Figure 5 This is a schematic diagram of the circulating storage tank in a temperature-controlled circulating storage device for white zinc electroplating solution. Figure 6 This is a schematic diagram of the connecting sleeve in a temperature-controlled circulating storage device for white zinc electroplating solution. Figure 7 A schematic diagram of the top plate in a temperature-controlled circulating storage device for white zinc electroplating solution; Figure 8 for Figure 7 Top view.

[0020] In the diagram: 1. Circulating storage tank; 11. Insulation board; 12. Heat-conducting rod; 2. Heating base plate; 3. Motor; 31. Rotating shaft; 32. First stirring rod; 33. Second stirring rod; 34. Top plate; 4. Box plate; 41. Feed pipe; 42. Connecting rod; 43. Filter plate; 44. Fixing plate; 45. Connecting sleeve rod; 451. Spring; 452. Fixing rod; 5. Equipment box; 51. Drain pipe. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-8 In this embodiment of the invention, a temperature-controlled circulating storage device for electroplating solution for white zinc electroplating includes a circulating storage tank 1, a box plate 4 bolted to the upper surface of the circulating storage tank 1, and a feed pipe 41 disposed on the upper surface of the box plate 4 for feeding. Connecting rods 42 are symmetrically arranged on the lower surface of the box plate 4. The lower end of the connecting rods 42 is connected to a fixing plate 44 inside the circulating storage tank 1. A filter plate 43 for filtering the electroplating solution is disposed above the fixing plate 44 on the outside of the connecting rods 42. Connecting sleeve rods 45 are symmetrically arranged on the lower surface of the filter plate 43. A fixing rod 452 for guiding the lifting and lowering of the connecting sleeve rods 45 is disposed on the upper surface of the fixing plate 44. A spring 451 is also disposed inside the connecting sleeve rod 45. A motor 3 is installed on one side of the circulating storage tank 1. The drive end of the motor 3 is sealed and connected to a rotating shaft 31. A first stirring rod 32 and a second stirring rod 33 are respectively arranged on the outside of the rotating shaft 31 from top to bottom. The upper end of the first stirring rod 32 is connected to a top plate 34. A device box 5 for circulating electroplating solution is also provided on one side of the circulating storage tank 1.

[0023] exist Figure 5 , Figure 6 and Figure 7 In the middle: The equipment box 5 is equipped with a circulation pump. The pumping end of the circulation pump is equipped with a pumping pipe for drawing out the electroplating solution inside the circulating storage box 1, and the pumping end of the circulation pump is connected to a drain pipe 51 for discharging the electroplating solution into the circulating storage box 1. The circulation pump continuously draws out the electroplating solution from the bottom of the box and returns it from the top of the box, forming a closed-loop circulation channel to achieve continuous flow, heat exchange and homogenization of the plating solution.

[0024] exist Figure 4 , Figure 5 and Figure 7In the heating base plate 2, ten sets of electric heating tubes are symmetrically arranged inside. All electric heating tubes are electrically connected to an external temperature controller. Heat-conducting rods 12 are symmetrically arranged on the upper surface of the heating base plate 2 inside the circulating storage tank 1. The inner side of the circulating storage tank 1 is also equipped with a heat-insulating plate 11 for keeping the electroplating solution warm. The multiple sets of heat-conducting rods 12 can quickly conduct heat to achieve uniform heating of the plating solution in the tank. The heat-insulating plate 11 on the inner side of the circulating storage tank 1 is also equipped with a heat-insulating plate 11 for keeping the electroplating solution warm, minimizing heat loss, ensuring temperature control accuracy, and reducing energy consumption.

[0025] exist Figure 4 and Figure 7 In the middle: the first stirring rod 32 and the second stirring rod 33 are both symmetrically arranged in a cylindrical shape outside the rotating shaft 31. Multiple sets of stirring rods can realize full-area stirring without dead corners. The outer surface of the top plate 34 is in contact with the lower surface of the filter plate 43. The top plate 34 continuously and intermittently pushes the filter plate 43 as the rotating shaft 31 rotates, providing power for the vibration and slag removal of the filter plate 43.

[0026] exist Figure 6 In the middle: the lower end of the spring 451 is fixed to the upper end face of the fixing rod 452, and the upper end of the spring 451 is fixed to the inner top surface of the connecting sleeve rod 45. When the filter plate 43 is lifted, the spring 451 deforms. After the top plate 34 is disengaged, the spring 451 quickly rebounds, driving the filter plate 43 to vibrate at high frequency, thereby achieving automatic slag removal and anti-clogging.

[0027] exist Figure 1 In the middle: A discharge valve is also provided on one side of the circulating storage tank 1 to facilitate the discharge of the electroplating solution inside the circulating storage tank 1. The top of the feed pipe 41 is equipped with a sealing flange cover plate. A PTFE sealing gasket is provided at the connection between the box plate 4 and the circulating storage tank 1 to improve the overall sealing of the box and prevent the plating solution from evaporating and air from entering.

[0028] exist Figure 1 In the middle: A temperature sensor is installed in the inner cavity of the circulating storage tank 1. The temperature sensor is connected to the temperature controller, the circulating pump, and the electric heating tube. The motor 3, the circulating pump, and the electric heating tube are all connected to the PLC control cabinet to collect the plating solution temperature signal in real time and provide feedback, so as to realize the automatic adjustment of heating start and stop and circulation flow.

[0029] The working principle of the present invention is as follows: When using the temperature-controlled circulating storage device for white zinc electroplating solution, first open the sealing cover of the feed pipe 41 and let the white zinc electroplating solution to be stored into the circulating storage tank 1. After feeding is completed, close the cover to achieve sealed storage of the tank. During the storage process, the temperature sensor inside the circulating storage box 1 will detect the temperature of the plating solution in real time. Together with the external temperature controller, it controls the start and stop of the electric heating tube inside the heating base plate 2. The heat is evenly conducted through the heat conduction rod 12, and together with the heat insulation plate 11 inside the box, it achieves constant temperature and liquid retention, keeping the plating solution stably within the appropriate temperature range for the process, and avoiding the plating solution deterioration caused by temperature fluctuations. At the same time, the starting motor 3 drives the rotating shaft 31 to rotate. The first stirring rod 32 and the second stirring rod 33 outside the rotating shaft 31 rotate synchronously to stir the electroplating solution in the tank in all directions, preventing the plating solution from stratifying and the reagents from settling. During the rotation, the top plate 34 continuously and intermittently pushes the filter plate 43. The filter plate 43 is subjected to force and moves up and down along the fixed rod 452. At the same time, the spring 451 is deformed. After the top plate 34 is disengaged, the spring 451 rebounds and drives the filter plate 43 to quickly reset. This achieves high-frequency up and down vibration of the filter plate 43, which can avoid clogging of the filter holes. Meanwhile, the circulating pump inside the equipment box 5 continues to work, drawing the electroplating solution from the bottom of the box through the liquid extraction pipe, and then returning it to the upper part of the box through the liquid discharge pipe 51, forming a closed loop circulation, further mixing the temperature and concentration of the plating solution, and improving the impurity removal and temperature control effects.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A temperature-controlled circulating storage device for white zinc electroplating solution, comprising a circulating storage tank (1), a tank plate (4) bolted to the upper surface of the circulating storage tank (1), and a feed pipe (41) disposed on the upper surface of the tank plate (4) for feeding material, characterized in that, Connecting rods (42) are symmetrically arranged on the lower surface of the box plate (4). The lower end of the connecting rod (42) is connected to a fixing plate (44) inside the circulating storage box (1). A filter plate (43) for filtering electroplating liquid is arranged above the fixing plate (44) on the outside of the connecting rod (42). Connecting sleeve rods (45) are symmetrically arranged on the lower surface of the filter plate (43). A fixing rod (452) for guiding the lifting of the connecting sleeve rod (45) is arranged on the upper surface of the fixing plate (44). A spring (451) is also arranged inside the connecting sleeve rod (45). A motor (3) is installed on one side of the circulating storage tank (1). The drive end of the motor (3) is sealed and connected to a rotating shaft (31). A first stirring rod (32) and a second stirring rod (33) are respectively arranged on the outside of the rotating shaft (31) from top to bottom. The upper end of the first stirring rod (32) is connected to a top plate (34). A device box (5) for circulating electroplating solution is also provided on one side of the circulating storage tank (1).

2. The temperature-controlled circulating storage device for white zinc electroplating solution according to claim 1, characterized in that, The equipment box (5) is equipped with a circulation pump. The pumping end of the circulation pump is equipped with a pumping pipe for drawing the electroplating solution inside the circulation storage box (1), and the pumping end of the circulation pump is connected to a drain pipe (51) for discharging the electroplating solution into the circulation storage box (1).

3. The temperature-controlled circulating storage device for white zinc electroplating solution according to claim 1, characterized in that, The heating base plate (2) is symmetrically equipped with ten sets of electric heating tubes, all of which are electrically connected to an external temperature controller.

4. The temperature-controlled circulating storage device for white zinc electroplating solution according to claim 1, characterized in that, The upper surface of the heating base plate (2) is symmetrically provided with heat-conducting rods (12) inside the circulating storage tank (1), and the inner side of the circulating storage tank (1) is also provided with a heat-insulating plate (11) for keeping the electroplating solution warm.

5. The temperature-controlled circulating storage device for white zinc electroplating solution according to claim 1, characterized in that, The first stirring rod (32) and the second stirring rod (33) are both symmetrically arranged in a cylindrical shape outside the rotating shaft (31), and the outer surface of the top plate (34) is in contact with the lower surface of the filter plate (43).

6. The temperature-controlled circulating storage device for white zinc electroplating solution according to claim 1, characterized in that, The lower end of the spring (451) is fixed to the upper end face of the fixing rod (452), and the upper end of the spring (451) is fixed to the inner top surface of the connecting sleeve rod (45).

7. The temperature-controlled circulating storage device for white zinc electroplating solution according to claim 1, characterized in that, The circulating storage box (1) is also provided with a discharge valve on one side, and the top of the feed pipe (41) is fitted with a sealing flange cover.

8. The temperature-controlled circulating storage device for white zinc electroplating solution according to claim 1, characterized in that, A temperature sensor is installed inside the circulating storage box (1), and the temperature sensor is connected to the temperature controller, the circulating pump, and the electric heating tube.

9. A temperature-controlled circulating storage device for electroplating solution in white zinc electroplating according to claim 1, characterized in that, The motor (3), circulating pump and electric heating tube are all connected to the PLC control cabinet.

10. A temperature-controlled circulating storage device for electroplating solution in white zinc electroplating according to claim 1, characterized in that, A PTFE sealing gasket is provided at the connection between the box plate (4) and the circulating storage box (1).

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