Chemical nickel plating tank equipment suitable for production of large components

Abstract

The utility model relates to chemical nickel plating bath equipment suitable for large-scale part production, which comprises a plating bath, a stirring air pipe, a steam heating pipe, an air exhaust outlet, an anode protector, a filtering system and a detection adding system, the plating bath is used for bearing plating solution, the inner wall of the plating bath is formed by welding stainless steel plates, and the stirring air pipe is arranged on the inner wall of the plating bath. The stirring gas pipe is welded and fixed at the bottom of the plating tank, the steam heating pipe is welded and fixed at the periphery of the outer part of the plating tank, the welding parts of the inner wall of the plating tank, the stirring gas pipe and the steam heating pipe are subjected to Teflon spraying treatment, a physical barrier is formed on the surface, and the anode protector and the exhaust outlet are arranged on the inner side wall of the plating tank. The air exhaust outlet penetrates through the plating tank and is connected to an external air exhaust system, the filtering system is respectively communicated with the top and the bottom of the plating tank and is used for circularly filtering a plating solution in the plating tank, and the detecting and adding system is communicated with the interior of the plating tank.

Description

Technical Field

[0001] The utility model relates to the field of large-scale chemical nickel plating tank equipment, in particular to chemical nickel plating tank equipment suitable for the production of large-scale components. Background Art

[0002] Chemical plating technology is a process of depositing metals through a controllable redox reaction under the catalytic action of metals. Compared with electroplating, chemical plating technology has the characteristics of uniform coating, small pinholes, no need for DC power supply equipment, deposition on non-conductors and certain special properties. At present, chemical plating technology (especially chemical nickel) has been widely used in electronics, valve manufacturing, machinery, petrochemical, automobile, aerospace and other industries.

[0003] Many large products can only be produced in large plating tanks (generally a 50-ton plating tank is required). Some plating tanks currently use stainless steel materials, but due to problems such as surface flatness, welding, and anode protection, the problem of surface nickel growth often occurs. Since the tank body is relatively large, the company's costs will be greatly increased in dealing with the nickel growth problem. In order to solve the problem of nickel growth in stainless steel tank bodies, some companies use PP materials, but because the temperature required for general chemical nickel is relatively high (between 88° and 95°), it will cause tank deformation, cracking of welds, nickel growth, and other problems. The tank body needs to be replaced regularly, which has a great impact on the company's production and costs. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a chemical nickel plating tank device suitable for the production of large parts.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the utility model relates to a chemical nickel plating tank equipment suitable for the production of large components, including a plating tank, a stirring air pipe, a steam heating pipe, an exhaust vent, an anode protector, a filtering system, and a detection and addition system. The plating tank is used to carry a plating solution, wherein the inner wall of the plating tank is welded by stainless steel plates, the stirring air pipe is welded and fixed to the inner wall of the plating tank, the steam heating pipe is welded and fixed to the outer wall of the plating tank, the welding parts of the inner wall of the plating tank, the stirring air pipe and the steam heating pipe are treated with Teflon spraying to form a physical barrier on the surface, the anode protector and the exhaust vent are arranged on the inner wall of the plating tank, the exhaust vent runs through the plating tank and is connected to an external exhaust system, the filtering system is respectively connected to the top and bottom of the plating tank, circulates and filters the plating solution in the plating tank, and the detection and addition system is connected to the inside of the plating tank.

[0006] Preferably, the outer wall of the plating tank is a PP plate, the thickness of the PP plate is 20 mm, and thermal insulation cotton is provided between the plating tank and the PP plate.

[0007] Preferably, 4 groups of stirring air pipes are provided inside the plating tank, and the stirring air pipes are mirror-finished stainless steel pipes. A stirring bracket is provided inside the plating tank, and the stirring bracket is welded to the bottom of the plating tank. After welding, the stirring bracket is treated with Teflon spraying, and the stirring air pipe is fixed inside the plating tank through the stirring bracket.

[0008] Preferably, the stirring air pipe includes an air outlet and an air inlet, the air inlet provides gas to enter the stirring air pipe, and the gas is ejected from the air outlet, the air outlet is arranged at the bottom of the plating tank, the air inlet is connected to the top of the plating tank, and the air inlet is connected to an external oil-free compressed air pipe.

[0009] Preferably, the air outlet portion is provided with a plurality of air holes, and the air holes are arranged in two rows in an orderly manner on the stirring air pipe, and the air holes are arranged on the stirring air pipe at a downward angle of 45°.

[0010] Preferably, the plating tank is equipped with 6 sets of anode protectors, each set of the anode protectors is provided with a rectifier, the inner wall of the plating tank is provided with a stainless steel cathode rod, the rectifier includes a rectifier anode and a rectifier cathode, the rectifier anode is fixed to the upper part of the inner wall of the plating tank by screws, and the rectifier cathode is connected to the stainless steel cathode rod.

[0011] Preferably, the stainless steel cathode rod penetrates the outer wall of the plating tank, wherein the stainless steel cathode rod is arranged close to the steam heating pipe.

[0012] Preferably, the steam heating pipe is made of mirror stainless steel pipe, the heating pipe bracket is arranged at the bottom position close to the outer wall of the plating tank, the steam heating pipe is welded and fixed on the steam pipe bracket, and the welding part between the steam heating pipe and the steam pipe bracket is polished and flattened and treated with Teflon spraying.

[0013] Preferably, the plating tank is equipped with 4 sets of filtering systems, and the filtering system includes a filtering inlet, a filtering part and a filtering outlet. The filtering inlet is arranged at the bottom of the plating tank, and the filtering outlet is arranged at the top of the plating tank. The filtering part is connected to the filtering inlet and the filtering outlet through pipes respectively.

[0014] Preferably, the detection and addition system is connected to the inside of the plating tank, and the detection and addition system is equipped with an online nickel concentration analysis device and an online pH analysis device.

[0015] The beneficial effect of the utility model is that the utility model discloses a chemical nickel plating tank equipment suitable for the production of large parts. By using Teflon to spray the welding parts of the inner wall of the plating tank, the stirring bracket and the heating tube bracket, a physical barrier is formed at the welding parts of the inner wall of the plating tank, the stirring bracket and the heating tube bracket, which effectively prevents nickel ions in the plating solution from directly contacting the welding parts, thereby reducing or preventing the occurrence of nickel plating to a certain extent, thereby avoiding deformation of the plating tank, cracking of the welding part, nickel growth and other problems, which can effectively save production costs, reduce the maintenance time of the plating tank and extend the production cycle of the plating tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic diagram for introducing the overall components of the utility model.

[0018] Figure 3 It is a cross-sectional schematic diagram of the utility model.

[0019] Figure 4 It is a side structural schematic diagram of the utility model.

[0020] Reference numerals

[0021] 1. Plating tank; 2. Stirring air pipe; 21. Air outlet; 211. Air hole; 22. Air inlet; 23. Stirring bracket; 3. Steam heating pipe; 31. Steam inlet; 32. Steam outlet; 33. Steam bracket; 4. Air exhaust port; 5. Anode protector; 51. Rectifier anode; 52. Stainless steel cathode rod; 6. Filter system; 61. Filter inlet; 62. Filter section; 63. Filter outlet; 7. Detection and addition system; DETAILED DESCRIPTION

[0022] See also Figure 1-4 As shown, the utility model is about a chemical nickel plating tank 1 device suitable for the production of large parts, including a plating tank 1, a stirring air pipe 2, a steam heating pipe 3, an exhaust port 4, an anode protector 5, a filter system 6, and a detection and addition system 7. The stirring air pipe 2 and the anode protector 5 are arranged inside the plating tank 1, the exhaust port 4 and the steam heating pipe 3 are arranged around the plating tank 1, the exhaust port 4 runs through the plating tank 1, the filter system 6 is connected to the top and bottom of the plating tank 1 through pipelines, and the detection and addition system 7 is connected to the inside of the plating tank 1 through pipelines.

[0023] Furthermore, in this embodiment, the length, width and height of the plating tank 1 are 6m*3m*3m, and the plating solution volume that can be accommodated in the plating tank 1 is up to 50T. The inner wall of the plating tank 1 is welded by mirror stainless steel plates, and the outer wall of the plating tank 1 is provided with a PP plate, the thickness of the PP plate is 20mm, and thermal insulation cotton is provided between the plating tank 1 and the PP plate. Among them, the welding part of the inner wall of the plating tank 1 is polished and flattened, and then treated with Teflon spraying. Teflon is a high-performance fluorine-containing polymer material with excellent chemical stability, low friction coefficient, non-stickiness, corrosion resistance, temperature resistance and other characteristics. When the Teflon coating is evenly covered on the welding part in the plating tank 1, it can act as a physical barrier to a certain extent to prevent the direct influence of high temperature and oxidizing environment on the welding part.

[0024] In this embodiment, 4 groups of stirring air pipes 2 are provided inside the plating tank 1, and the stirring air pipes 2 are mirror stainless steel pipes. The stirring air pipe 2 includes an air outlet 21 and an air inlet 22, and the air inlet 22 provides gas to enter the stirring air pipe 2, and the gas is ejected from the air outlet 21. Further, the air outlet 21 is arranged at the bottom of the plating tank 1, and the air inlet 22 is connected to the top of the plating tank 1, and the air inlet 22 is connected to the external oil-free compressed air pipe. Among them, a plurality of air holes 211 are provided on the air outlet 21, and the air holes 211 are arranged in an orderly manner on the stirring air pipe 2 in two rows, and the air holes 211 are arranged on the stirring air pipe 2 at 45° downward. Further, a stirring bracket 23 is provided in the plating tank 1, and the stirring bracket 23 is welded and arranged at the bottom of the plating tank 1. After welding, the stirring bracket 23 is treated with Teflon spraying. The stirring air pipe 2 is fixed to the inside of the plating tank 1 through the stirring bracket 23. The air inlet 22 is equipped with an air inlet valve, through which the air flow is controlled. When the four groups of stirring air pipes 2 are connected to the top oil-free compressed air pipe, a flexible interface needs to be configured for connection to facilitate later maintenance.

[0025] In this embodiment, the plating tank 1 is equipped with 6 sets of anode protectors 5, each set of the anode protectors 5 is provided with a rectifier, the input value of the rectifier is: AC100V (130W), 50-60s, the output value is: DC0-2V, 3A (Max), the rectifier is constant voltage controlled, and the voltage is set to 0.9-1.0V. Further, the rectifier includes a rectifier anode 51 and a rectifier cathode (not shown in the figure), the rectifier anode 51 is fixed to the upper part of the inner wall of the plating tank 1 by screws, the rectifier cathode is connected to a stainless steel cathode rod 52, the diameter of the stainless steel cathode rod 52 is 20mm, the length is 2.25m (3 / 4 of the height of the plating tank 1), the stainless steel cathode rod 52 is fixed on the plating tank 1, the stainless steel cathode rod 52 penetrates the plating tank 1 and is fixedly connected to the PP plate, preferably, the stainless steel cathode rod 52 is arranged as close to the steam heating pipe 3 as possible, and the stainless steel cathode rod 52 needs to be processed regularly.

[0026] In this embodiment, a plurality of the exhaust vents 4 are arranged on the outer wall of the plating tank 1. Furthermore, the exhaust vents 4 are arranged at the top of the outer wall of the plating tank 1. The exhaust vents 4 penetrate the outer surface of the plating tank 1. The exhaust vents 4 are connected to an external exhaust system.

[0027] In this embodiment, a heating tube bracket is arranged on the outer wall around the plating tank 1, and the heating tube bracket is arranged near the bottom of the outer wall of the plating tank 1. The heating tube bracket is fixedly installed on the outer wall of the plating tank 1 by welding, and the welding part between the heating tube bracket and the plating tank 1 is treated with Teflon spraying. The steam heating tube 3 is made of a mirror stainless steel tube, and the steam heating tube 3 is welded and fixed on the steam tube bracket. The welding part between the steam heating tube 3 and the steam tube bracket is polished and treated with Teflon spraying. Among them, the steam heating tube 3 includes a steam inlet 31 and a steam outlet 32, and the steam inlet 31 and the steam outlet 32 ​​are arranged at the top of the plating tank 1. In this embodiment, the steam heating tube 3 is equipped with a solenoid valve, and the solenoid valve is controlled by the temperature rise inside the plating tank 1, so as to ensure the temperature stability of the plating tank 1.

[0028] In this embodiment, the plating tank 1 is equipped with 4 sets of filtering systems 6, and the filtering system 6 includes a filtering inlet 61, a filtering part 62 and a filtering outlet 63. The filtering inlet 61 is arranged at the bottom of the plating tank 1, and the filtering outlet 63 is arranged at the top of the plating tank 1. The filtering part 62 is connected to the filtering inlet 61 and the filtering outlet 63 through pipes, respectively. In order to ensure that the tank liquid is fully filtered, the filtering part 62 adopts a 1-micron filter element. The plating liquid inside the plating tank 1 enters the filtering part 62 from the filtering inlet 61 for filtering treatment. After the plating liquid is filtered, it is guided to the filtering outlet 63 from the pipe. The filtered plating liquid flows into the plating tank 1 again from the filtering outlet 63, and the reciprocating operation is performed to achieve a circulating filtering effect.

[0029] In this embodiment, the detection and addition system 7 is connected to the inside of the plating tank 1. The detection and addition system 7 is equipped with an online nickel concentration analysis device and an online PH analysis device. The analysis rate is once an hour, and the PH value and nickel concentration data are analyzed online. When the nickel concentration or PH value inside the plating tank 1 decreases, the detection and addition system 7 automatically adds chemical nickel additives or ammonia water to stabilize the PH value inside the plating tank 1. With the support of the detection and addition system 7, the product quality can be effectively improved, especially the control of the coating film thickness will be significantly enhanced.

[0030] The utility model discloses a chemical nickel plating tank 1 device suitable for the production of large parts. By using Teflon to spray the welding parts of the inner wall of the plating tank 1, the stirring bracket 23 and the heating tube bracket, a physical barrier is formed on the welding parts of the inner wall of the plating tank 1, the stirring bracket 23 and the heating tube bracket, which effectively prevents nickel ions in the plating solution from directly contacting the welding parts, thereby reducing or preventing the occurrence of nickel plating to a certain extent, thereby avoiding deformation of the plating tank 1, cracking of the welding part, nickel growth and other problems, effectively saving production costs, reducing the maintenance time of the plating tank 1 and extending the production cycle of the plating tank 1.

[0031] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A chemical nickel plating tank equipment suitable for the production of large parts, characterized in that: The invention comprises a plating tank, a stirring air pipe, a steam heating pipe, an exhaust vent, an anode protector, a filtering system and a detection and adding system. The plating tank is used to carry the plating solution. The inner wall of the plating tank is welded by stainless steel plates. The stirring air pipe is welded and fixed to the inner wall of the plating tank. The steam heating pipe is welded and fixed to the outer wall of the plating tank. The welding parts of the inner wall of the plating tank, the stirring air pipe and the steam heating pipe are treated with Teflon spraying to form a physical barrier on the surface. The anode protector and the exhaust vent are arranged on the inner wall of the plating tank. The exhaust vent runs through the plating tank and is connected to the external exhaust system. The filtering system is respectively connected to the top and the bottom of the plating tank to circulate and filter the plating solution in the plating tank. The detection and adding system is connected to the inside of the plating tank.

2. The chemical nickel plating tank equipment suitable for large-scale component production according to claim 1, characterized in that: The outer wall of the plating tank is a PP plate, the thickness of the PP plate is 20 mm, and thermal insulation cotton is arranged between the plating tank and the PP plate.

3. The chemical nickel plating tank equipment suitable for large-scale component production according to claim 1, characterized in that: The plating tank is provided with 4 groups of stirring air pipes, which are mirror-finished stainless steel pipes. The plating tank is provided with a stirring bracket, which is welded to the bottom of the plating tank. The stirring bracket is treated with Teflon spraying after welding, and the stirring air pipe is fixed to the inside of the plating tank through the stirring bracket.

4. The chemical nickel plating tank equipment suitable for large-scale component production according to claim 3, characterized in that: The stirring air pipe includes an air outlet and an air inlet. The air inlet provides gas to enter the stirring air pipe, and the gas is ejected from the air outlet. The air outlet is arranged at the bottom of the plating tank, and the air inlet is connected to the top of the plating tank. The air inlet is connected to an external oil-free compressed air pipe.

5. The chemical nickel plating tank equipment suitable for large-scale component production according to claim 4, characterized in that: The air outlet portion is provided with a plurality of air holes, which are divided into two rows and arranged in an orderly manner on the stirring air pipe, and the air holes are arranged on the stirring air pipe at a downward angle of 45 degrees.

6. The chemical nickel plating tank equipment suitable for large-scale component production according to claim 1, characterized in that: The plating tank is equipped with 6 sets of anode protectors, each set of the anode protectors is provided with a rectifier, and the inner wall of the plating tank is provided with a stainless steel cathode rod. The rectifier includes a rectifier anode and a rectifier cathode. The rectifier anode is fixed to the upper part of the inner wall of the plating tank by screws, and the rectifier cathode is connected to the stainless steel cathode rod.

7. The chemical nickel plating tank equipment suitable for large-scale component production according to claim 6, characterized in that: The stainless steel cathode rod penetrates the outer wall of the plating tank, wherein the stainless steel cathode rod is arranged close to the steam heating pipe.

8. The chemical nickel plating tank equipment suitable for large-scale component production according to claim 1, characterized in that: The steam heating pipe is made of mirror stainless steel pipe, the heating pipe bracket is arranged at the bottom position close to the outer wall of the plating tank, the steam heating pipe is welded and fixed on the steam pipe bracket, and the welding part between the steam heating pipe and the steam pipe bracket is polished and flattened and treated with Teflon spraying.

9. The chemical nickel plating tank equipment suitable for large-scale component production according to claim 1, characterized in that: The plating tank is equipped with 4 sets of filtering systems, which include a filtering inlet, a filtering part and a filtering outlet. The filtering inlet is arranged at the bottom of the plating tank, and the filtering outlet is arranged at the top of the plating tank. The filtering part is connected to the filtering inlet and the filtering outlet through pipes respectively.

10. The chemical nickel plating tank equipment suitable for large-scale component production according to claim 1, characterized in that: The detection and addition system is equipped with an online nickel concentration analysis device and an online pH analysis device.

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