Electroplating device capable of preventing bipolar electrode phenomenon from damaging metal heat exchanger

Abstract

The utility model discloses an electroplating device for preventing a bipolar electrode phenomenon from generating harm to a metal heat exchanger, which comprises an electroplating bath, a sliding chute is arranged at the top end of the electroplating bath, a sliding block is in sliding fit in the sliding chute, the top end of the sliding block is fixedly connected with supporting blocks, an anode rod is fixedly connected between the supporting blocks, and the anode rod is fixedly connected with the electroplating bath. And a heat exchanger is fixedly connected to the bottom end in the electroplating bath. According to the utility model, the heat exchanger is arranged, and the heat exchanger is arranged in the range of 150-200mm from the bottom of the tank to the bottom end of the anode along the tank wall, so that an electric power circuit wrapping area of an electric field formed by the cathode and the anode is effectively avoided, and the heat exchange area is greatly increased compared with the original manner that the heat exchanger is only erected on the side wall; the phenomenon that cleaning of the tank bottom is hindered due to the fact that the hanging tool is laid on the tank bottom plane and the heat exchanger is damaged when parts or hanging tools fall into the plating tank is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electroplating, in particular to an electroplating device which can avoid the harm of a bipolar electrode phenomenon to a metal heat exchanger. Background Art

[0002] As a multifunctional surface treatment technology, electroplating has penetrated into almost all manufacturing and service industries and has become an indispensable part of modern industrial production. It is a process of plating a thin layer of other metals or alloys on certain metal surfaces using the principle of electrolysis. It is a process of using electrolysis to attach a layer of metal film to the surface of metal or other material parts, thereby preventing metal oxidation, improving wear resistance, conductivity, weldability, reflectivity, corrosion resistance and enhancing aesthetics. Specifically, in a plating tank filled with electroplating solution, the cleaned and specially treated part to be plated is used as the cathode, and the plated metal is used to make the anode. The two poles are connected to the positive and negative poles of the DC power supply respectively. After power is turned on, the metal ions in the electroplating solution move to the cathode under the action of the potential difference to form a coating.

[0003] A bipolar electrode (BPE) is a conductor that is not connected to an external power source and is immersed in the electrolyte between the anode and the cathode. The side of the anode close to the driving electrode acts as a cathode and a reduction reaction occurs, while the side of the cathode close to the driving electrode acts as an anode and an oxidation reaction occurs. The conductor can act as both an anode and a cathode at the same time. The metal heat exchanger in the electroplating tank becomes a bipolar electrode in such an environment. Usually, the metal heat exchanger in the electroplating tank is often set on the tank wall on the side of the plating tank where the anode is hung for easy installation and maintenance and not occupying the effective working space of the plating tank, such as the one in the instruction manual. Figure 5 The structure is often close to the anode, and the local high temperature and other factors often lead to serious bipolar electrode phenomenon, causing the metal ions in the electroplating solution to preferentially deposit in the area close to the heating tube, resulting in waste of metal materials and other chemical materials, and seriously reducing the heat exchange effect of the heat exchanger and increasing energy consumption. At the same time, the heat exchanger is damaged, resulting in a shortened life of the heat exchanger. In severe cases, the heat exchanger is corroded and perforated, resulting in leakage of contaminated tank liquid or the electroplating solution is sucked back into the heat exchanger, causing pollution and serious harm. It is very necessary to develop a device that can avoid the bipolar electrode phenomenon. Utility Model Content

[0004] The purpose of the utility model is to provide an electroplating device that avoids the harm of the bipolar electrode phenomenon to the metal heat exchanger, and solves the problem that the original metal heat exchanger in the plating tank is installed on the side wall of the plating tank and is close to the anode (titanium blue), so that the bipolar electrode phenomenon is formed in the titanium blue area near the anode of the heat exchanger when the plating tank is working, resulting in a cathode reaction in the area near the anode of the heat exchanger, causing copper, nickel, tin and other precious metals to be deposited thereon, resulting in waste of metal materials, and simultaneously consuming the corresponding chemical raw materials, while seriously reducing the exchange rate of the heat exchanger, shortening the service life of the heat exchanger and increasing energy consumption, and eliminating the risk of dissolution due to local anode reaction, thereby greatly improving the service life of the heat exchanger and greatly reducing the risk of plating solution leakage and being sucked back into the heat exchanger pipeline.

[0005] In order to achieve the above-mentioned purpose, an electroplating device is provided to avoid the damage of the bipolar electrode phenomenon to the metal heat exchanger, including: an electroplating tank, a slide groove is opened at the top of the electroplating tank, a slider is slidably matched inside the slide groove, the top of the slider is fixedly connected to a support block, an anode rod is fixedly connected between the support blocks, and the bottom end of the electroplating tank is fixedly connected to the heat exchanger.

[0006] According to the electroplating device for avoiding the bipolar electrode phenomenon from causing harm to the metal heat exchanger, a positive and negative electrode introduction interface is fixedly connected to one end of the top of the electroplating tank.

[0007] According to the electroplating device for avoiding the bipolar electrode phenomenon from causing harm to the metal heat exchanger, an inner cavity is opened inside the electroplating tank.

[0008] According to the electroplating device for avoiding the bipolar electrode phenomenon from causing harm to the metal heat exchanger, the number of the support blocks is four, and the number of the anode rods is two.

[0009] According to the electroplating device for avoiding the bipolar electrode phenomenon from causing harm to the metal heat exchanger, the heat exchanger is 150-200 mm lower than the bottom end of the anode.

[0010] According to the electroplating device for avoiding the bipolar electrode phenomenon from causing harm to the metal heat exchanger, the heat exchanger is in an oblong shape and is arranged along the tank wall.

[0011] The above scheme has the following beneficial effects:

[0012] The utility model is provided with a heat exchanger, which is arranged along the tank wall in the range of 150-200mm below the bottom end of the anode at the bottom of the tank, effectively avoiding the power line wrapping area of ​​the electric field composed of the cathode and the anode. Compared with the original installation only on the side wall, the heat exchange area is greatly increased, and it also avoids the installation on the plane of the tank bottom to hinder the cleaning of the tank bottom and the damage to the heat exchanger caused by parts or hangers falling into the plating tank.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 A three-dimensional diagram of the electroplating device of the utility model for avoiding the damage of the bipolar electrode phenomenon to the metal heat exchanger;

[0016] Figure 2 It is a cross-sectional front view of the electroplating device of the utility model for avoiding the damage of the bipolar electrode phenomenon to the metal heat exchanger;

[0017] Figure 3 A top view of a heat exchanger of an electroplating device for preventing the bipolar electrode phenomenon from causing damage to a metal heat exchanger according to the utility model;

[0018] Figure 4 Cross-sectional view of the electroplating tank of the electroplating device for avoiding the damage of the bipolar electrode phenomenon to the metal heat exchanger according to the utility model

[0019] Figure 5 This is a diagram of the structure of a traditional electroplating tank.

[0020] Legend:

[0021] 1. Electroplating tank; 2. Slide; 3. Support block; 4. Anode rod; 5. Heat exchanger; 6. Slider; 7. Inner cavity; 8. Positive and negative electrode introduction interface; 9. Anode; 10. Parts (cathode). DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model; the terms "first", "second" and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] Reference Figure 1-5 The utility model embodiment avoids the bipolar electrode phenomenon from causing harm to the metal heat exchanger, and the electroplating device comprises: an electroplating tank 1, a slide groove 2 is provided at the top of the electroplating tank 1, and the distance of the anode rod 4 can be conveniently adjusted by sliding through the slide groove 2 and the slider 6 structure, and the inner sliding of the slide groove 2 is matched with the slider 6, and the sliding effect is improved by the slider 6, and it can be conveniently connected with the support block 3, and the top of the slider 6 is fixedly connected to the support block 3, and the anode rod 4 is fixedly connected between the support blocks 3, and the number of the support blocks 3 is four, and the bottom end of the support block 3 is provided with an anode 9, and a part (cathode) 10 is provided between the anode 9, and the anode 9 and the part (cathode) 10 are connected by the anode 9. )10 are cooperated to achieve the electroplating effect. There are two anode rods 4. The bottom end of the interior of the electroplating tank 1 is fixedly connected to a heat exchanger 5, through which the internal liquid can achieve heat exchange. The top end of the electroplating tank 1 is fixedly connected to a positive and negative electrode introduction interface 8. An inner cavity 7 is opened inside the electroplating tank 1. The heat exchanger 5 is located at the bottom of the inner cavity 7, 150-200mm away from the bottom end of the anode 9. This distance facilitates the cleaning operation of the electroplating tank and does not affect the electroplating operation. The heat exchanger 5 is in an oblong shape and is arranged along the tank wall. This structure can increase the heat exchange area, improve the heat exchange efficiency and avoid the harm of the bipolar electrode phenomenon to the metal heat exchanger.

[0025] Working principle: The parts to be electroplated are mounted on hangers or placed on rollers and suspended between the anode rods 4. The position of the support block 3 is then adjusted according to the size of the hanger or roller. The slider 6 and the slide groove 2 can be slid together to complete the position movement, thereby ensuring a reasonable distance between the cathode 10 and the anode rod 4. At the same time, there is enough space for the heat exchanger 5 to be disassembled and removed during replacement and maintenance, and the part (cathode) 10 can be stably hung in the center of the inner cavity 7 and connected to the cathode of the power supply. A layer of metal film is then deposited on the surface of the part (cathode) 10 through electrolysis.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Electroplating equipment to avoid the damage of bipolar electrode phenomenon to metal heat exchangers, including: The electroplating tank (1) is characterized in that a slide groove (2) is provided at the top of the electroplating tank (1), a slider (6) is slidably fitted inside the slide groove (2), a support block (3) is fixedly connected to the top of the slider (6), an anode rod (4) is fixedly connected between the support blocks (3), and a heat exchanger (5) is fixedly connected to the bottom end of the electroplating tank (1).

2. The electroplating device for avoiding the damage of the bipolar electrode phenomenon to the metal heat exchanger according to claim 1 is characterized in that: A positive and negative electrode introduction interface (8) is fixedly connected to one end of the top of the electroplating tank (1).

3. The electroplating device for avoiding the damage of the bipolar electrode phenomenon to the metal heat exchanger according to claim 1, characterized in that: An inner cavity (7) is provided inside the electroplating tank (1).

4. The electroplating device for avoiding the damage of the bipolar electrode phenomenon to the metal heat exchanger according to claim 1, characterized in that: The number of the supporting blocks (3) is four, and the number of the anode rods (4) is two.

5. The electroplating device for avoiding the damage of the bipolar electrode phenomenon to the metal heat exchanger according to claim 1, characterized in that: The heat exchanger (5) is 150-200 mm below the bottom end of the anode (9).

6. The electroplating device for avoiding the damage of the bipolar electrode phenomenon to the metal heat exchanger according to claim 1, characterized in that: The heat exchanger (5) is in an oblong shape and is arranged along the tank wall.

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