Corrosion-resistant electrophoresis mechanism

Abstract

The utility model relates to a kind of corrosion-resistant electrophoresis mechanism.It solves the problem of poor temperature uniformity of electrophoretic fluid and difficulty in achieving uniform coverage of paint in the prior art.It includes electrophoresis tank, heat exchange assembly is provided at the bottom of electrophoresis tank, jet device connected with electrophoresis tank is provided at the bottom of heat exchange assembly, cathode electrophoresis is provided on the upper end face of electrophoresis tank, and anode electrophoresis is embedded at the bottom of electrophoresis tank.The utility model has the advantages of effectively ensuring the temperature uniformity of electrophoretic fluid, achieving uniform stirring of electrophoretic fluid, improving the uniformity of paint coverage and improving the electrophoresis quality of workpiece.

Description

Technical Field

[0001] This utility model relates to the field of electrophoresis equipment technology, specifically to a corrosion-resistant electrophoresis mechanism. Background Technology

[0002] In existing electrophoresis processes, the electrophoresis fixtures include anodes, cathodes, and electrophoresis tanks. Although this electrophoresis process can electrophores the outer surface of the tubes of shell-and-tube heat exchangers, it can only electrophores a shallow layer on the inner surface of the tubes, only up to 200-300 mm. The deeper layers of the inner surface cannot be electrophoresed, which makes the corrosion resistance of the tubes of shell-and-tube heat exchangers relatively poor. In addition, the temperature uniformity of the electrophoretic solution is poor and the coating is difficult to achieve uniform coverage, which can easily lead to inconsistent corrosion resistance of the workpiece surface and affect product quality.

[0003] To address the shortcomings of existing technologies, people have conducted long-term explorations and proposed various solutions. For example, Chinese patent literature discloses an insert injection mold [CN202310721419.5], which includes an electrophoresis tank, a cathode assembly, and an anode assembly; the electrophoresis tank is used to contain the electrophoresis liquid; the cathode assembly is inserted into the electrophoresis tank and is adapted to be electrically connected to the negative terminal of the power supply; the anode assembly is adapted to be electrically connected to the positive terminal of the power supply, and the anode assembly includes an anode tube and an anode rod, the anode tube is inserted into the electrophoresis tank, and the anode rod is placed in the electrophoresis tank and adapted to be inserted into the tube to be electrophoresed.

[0004] The above solution has solved the problem to some extent that existing electrophoresis equipment is unable to perform deep electrophoresis on the inner surface of workpieces. However, the solution still has many shortcomings, such as poor temperature uniformity of the electrophoretic solution and difficulty in achieving uniform coating coverage, which can easily lead to inconsistent corrosion resistance of the workpiece surface and affect product quality. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a corrosion-resistant electrophoresis mechanism.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a corrosion-resistant electrophoresis mechanism, including an electrophoresis tank, a heat exchange component at the bottom of the electrophoresis tank, a jet device connected and circulated with the electrophoresis tank at the bottom of the heat exchange component, a cathode electrophoresis device spirally raised and lowered on the upper end face of the electrophoresis tank, and an anodic electrophoresis device embedded at the bottom of the electrophoresis tank.

[0007] In the aforementioned corrosion-resistant electrophoresis mechanism, the inner wall of the electrophoresis tank has a stepped structure, which divides the electrophoresis tank into a coating discharge tank and a workpiece placement tank. The coating discharge tank is provided with several discharge through holes, and the workpiece placement tank is provided with several workpiece supports.

[0008] The electrophoresis tank adopts a stepped structure to achieve spatial separation between the coating and the workpiece, avoiding direct impact on the coating distribution when the workpiece is placed, and improving the coating circulation efficiency; secondly, it can achieve uniform coating coverage when falling.

[0009] In the aforementioned corrosion-resistant electrophoresis mechanism, the inner wall of the electrophoresis tank is sequentially coated with a ceramic coating and a fluororubber coating, and the upper end of the electrophoresis tank is equipped with a splash-proof cover.

[0010] The ceramic coating has high hardness and is resistant to acid and alkali corrosion, resisting the chemical erosion of the tank solution. The fluororubber coating has good elasticity and strong weather resistance, filling the micro gaps in the ceramic coating, forming double protection and extending the life of the tank.

[0011] This double-coated surface is smooth, reducing paint residue and impurities, and decreasing the frequency of cleaning.

[0012] In the aforementioned corrosion-resistant electrophoresis mechanism, the jetting device includes a reflux water chamber located at the bottom of the electrophoresis tank. The reflux water chamber is connected to the electrophoresis tank via a reflux water pipe. A circulation pump is installed on the reflux water pipe. The reflux water chamber is interconnected with the electrophoresis tank via the jetting pipe.

[0013] In the aforementioned corrosion-resistant electrophoresis mechanism, an external filter is connected to the return water pipe, and the return water passing through the external filter is connected to the circulation pump through a guide pipe.

[0014] In the aforementioned corrosion-resistant electrophoresis mechanism, a jetting seat is provided at one end of the jetting pipe located in the electrophoresis tank. The jetting seat is provided with several circumferential jetting holes, and a vertical jetting hole is provided at the upper end of the jetting seat.

[0015] The circumferential jets drive the liquid in the tank to circulate horizontally, while the vertical jets impact the surface of the workpiece upwards, preventing pigment sedimentation and enhancing the coating's ability to cover the dead corners of the workpiece.

[0016] In the aforementioned corrosion-resistant electrophoresis mechanism, the heat exchange component includes a heat exchange chamber disposed between the return water chamber and the electrophoresis tank, a heat exchange water flow is provided in the heat exchange chamber, one end of the heat exchange chamber is connected to the heat exchanger system, and a jet pipe passes through the heat exchange chamber.

[0017] The jet pipe is installed inside the heat exchange chamber to achieve simultaneous operation of "heat exchange + stirring", reducing energy consumption and ensuring uniform temperature of the tank liquid; secondly, the heat exchange chamber is set at the bottom of the electrophoresis tank, which can achieve uniform heat exchange and improve the quality of electrophoresis.

[0018] In the aforementioned corrosion-resistant electrophoresis mechanism, cathodic electrophoresis includes a spiral cathodic electrophoresis rod, a spiral positioning cylinder is rotatably provided on the anti-splash cover plate, and the spiral cathodic electrophoresis rod is spirally inserted into the spiral positioning cylinder with its end inserted into the electrophoresis tank.

[0019] In the aforementioned corrosion-resistant electrophoresis mechanism, one end of the spiral cathodic electrophoresis rod is connected to the negative terminal of the power supply, and the anodic electrophoresis rod is embedded in the inner wall of the bottom of the electrophoresis tank and connected to the positive terminal of the power supply.

[0020] Spiral cathodic electrophoresis rods can be adjusted close to the workpiece surface, shortening the electric field distance, enhancing the deposition dynamics of coating particles, and improving film thickness uniformity; anodic electrophoresis is embedded at the bottom of the electrophoresis tank, avoiding occupying the workpiece placement space, making it suitable for coating large workpieces, while reducing the risk of electrode-workpiece collision.

[0021] In the aforementioned corrosion-resistant electrophoresis mechanism, a hopper is provided at the bottom of the coating discharge tank. The hopper is connected to the discharge through-hole via a discharge pipe, and a discharge pump is connected to the outside of the hopper.

[0022] Compared with the prior art, the advantages of this utility model are as follows: by setting a heat exchange cavity at the bottom of the electrophoresis tank to achieve uniform heat exchange, the electrophoresis temperature is ensured to be uniform. Secondly, by using the jet seat to promote the horizontal circulation of the tank liquid to prevent pigment precipitation, the coating's ability to cover the dead corners of the workpiece is enhanced, and the corrosion resistance uniformity of the workpiece after electrophoretic coating is improved. Furthermore, the spiral cathodic electrophoresis rod can be raised and lowered and the electric field distance can be controlled as needed, which effectively enhances the deposition dynamics of coating particles and further improves the uniformity of film thickness. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the electrophoresis tank structure in this utility model;

[0025] Figure 3 This is a schematic diagram of the jet seat structure in this utility model;

[0026] Figure 4 This is a schematic diagram of the spiral positioning cylinder structure in this utility model;

[0027] Figure 5 This is a cross-sectional view of the paint discharge trough in this utility model;

[0028] In the diagram: Electrophoresis tank 1, paint discharge tank 11, workpiece placement tank 12, discharge through hole 13, workpiece support 14, hopper 15, discharge pipe 16, discharge pump 17, anti-splash cover 18, heat exchange assembly 2, heat exchange chamber 21, heat exchanger system 22, spray device 3, return water chamber 31, return water pipe 32, circulation pump 33, spray pipe 34, external filter 35, spray seat 36, circumferential spray hole 361, vertical spray hole 362, cathodic electrophoresis 4, spiral cathodic electrophoresis rod 41, spiral positioning cylinder 42, anodic electrophoresis 5. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1-5 As shown, a corrosion-resistant electrophoresis mechanism includes an electrophoresis tank 1, a heat exchange component 2 at the bottom of the electrophoresis tank 1, a jet device 3 at the bottom of the heat exchange component 2 that is connected and circulated with the electrophoresis tank 1, a cathodic electrophoresis 4 that is spirally raised and lowered on the upper end face of the electrophoresis tank 1, and an anodic electrophoresis 5 that is embedded at the bottom of the electrophoresis tank 1.

[0031] The inner wall of the electrophoresis tank 1 has a stepped structure, which divides the electrophoresis tank 1 into a paint discharge tank 11 and a workpiece placement tank 12. The paint discharge tank 11 is provided with a number of discharge through holes 13, and the workpiece placement tank 12 is provided with a number of workpiece supports 14.

[0032] The paint discharge tank 11 and the workpiece placement tank 12 are set as a stepped separation structure to realize the spatial separation of paint and workpiece, and the paint falls from top to bottom, increasing the deposition height and improving the electrophoretic effect of paint.

[0033] As can be seen, the inner wall of the electrophoresis tank 1 is sequentially provided with a ceramic coating and a fluororubber coating, and the upper end of the electrophoresis tank 1 is provided with a splash-proof cover plate 18.

[0034] The use of ceramic coating and fluororubber coating improves the corrosion resistance of electrophoresis tank 1, reduces paint adhesion and impurity attachment, and reduces the cleaning frequency.

[0035] Furthermore, the jet device 3 includes a return water chamber 31 located at the bottom of the electrophoresis tank 1. The return water chamber 31 is connected to the electrophoresis tank 1 via a return water pipe 32. A circulation pump 33 is provided on the return water pipe 32. The return water chamber 31 is interconnected with the electrophoresis tank 1 via a jet pipe 34.

[0036] In detail, an external filter 35 is connected to the return water pipe 32, and the return water passing through the external filter 35 is connected to the circulation pump 33 through the guide pipe.

[0037] The external filter 35 includes a coarse filter and a precision filter, which are used to filter foreign objects in the electrophoresis tank 1, protect the circulation pump 33, and remove dust and particles from the return electrophoresis liquid, thereby reducing coating dust and particles on the workpiece surface.

[0038] Preferably, the jet pipe 34 is provided with a jet seat 36 at one end inside the electrophoresis tank 1, the jet seat 36 is provided with a plurality of circumferential jet holes 361, and the upper end of the jet seat 36 is provided with a vertical jet hole 362.

[0039] The circumferential jet orifice 361 is used to promote the horizontal circulation of the bath liquid, while the vertical jet orifice 362 impacts the workpiece surface upward, preventing pigment sedimentation and enhancing the coating's ability to cover the dead corners of the workpiece.

[0040] Specifically, the heat exchange assembly 2 includes a heat exchange chamber 21 disposed between the return water chamber 31 and the electrophoresis tank 1. The heat exchange chamber 21 is provided with a hot water flow. One end of the heat exchange chamber 21 is connected to the heat exchanger system 22, and the spray pipe 34 passes through the heat exchange chamber 21.

[0041] The jet pipe 34 is installed in the heat exchange chamber 21 to achieve simultaneous heat exchange and stirring, reduce energy consumption, ensure uniform temperature of the bath liquid, and improve the uniformity of the electrophoresis environment.

[0042] Furthermore, the cathodic electrophoresis 4 includes a spiral cathodic electrophoresis rod 41, and a spiral positioning cylinder 42 is rotatably provided on the anti-splash cover plate 18. The spiral cathodic electrophoresis rod 41 is spirally inserted into the spiral positioning cylinder 42 and its end is inserted into the electrophoresis tank 1.

[0043] The spiral cathode electrophoresis rod 41 with a lifting mechanism can be adjusted in position according to the height of the workpiece to adapt to workpieces of different sizes, ensuring uniform electric field and improving electrophoresis penetration.

[0044] More specifically, one end of the spiral cathodic electrophoresis rod 41 is connected to the negative terminal of the power supply, and the anodic electrophoresis 5 is embedded in the inner wall of the bottom of the electrophoresis tank 1, and the anodic electrophoresis 5 is connected to the positive terminal of the power supply.

[0045] In addition, a material hopper 15 is provided at the bottom of the paint discharge trough 11. The material hopper 15 is connected to the discharge through hole 13 through the discharge pipe 16. The material hopper 15 is connected to a discharge pump 17.

[0046] A two-way valve is installed on the discharge pipe 16 here. The coating that is not attached to the workpiece flows back to the silo through the discharge hole and is recycled by the discharge pump, which reduces material costs.

[0047] In summary, the principle of this embodiment is as follows: by setting a heat exchange chamber 21 at the bottom of the electrophoresis tank 1, the temperature uniformity of the electrophoretic solution in the electrophoresis tank 1 is achieved, thereby improving the uniformity of electrophoresis. Secondly, the electrophoretic solution is circulated through the spray seat 36 by the circulation pump 33, and the circumferential spray holes 361 of the spray seat 36 allow the circumferential electrophoretic solution to circulate horizontally, while the vertical spray holes 362 cause the electrophoretic solution to impact the workpiece surface upward, preventing coating sedimentation and enhancing the coating's ability to cover dead corners of the workpiece. Furthermore, an external filter 35 is used to filter out foreign matter that falls into the electrophoresis tank 1, protecting the circulation pump 33 and removing dust and particles from the returning electrophoretic solution, reducing coating dust and particles on the workpiece surface, and improving the electrophoresis quality.

[0048] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0049] Although this document frequently uses terms such as electrophoresis tank 1, paint discharge tank 11, workpiece placement tank 12, discharge through hole 13, workpiece support 14, hopper 15, discharge pipe 16, discharge pump 17, anti-splash cover 18, heat exchange assembly 2, heat exchange chamber 21, heat exchanger system 22, spray device 3, return water chamber 31, return water pipe 32, circulation pump 33, spray pipe 34, external filter 35, spray seat 36, circumferential spray hole 361, vertical spray hole 362, cathodic electrophoresis 4, spiral cathodic electrophoresis rod 41, spiral positioning cylinder 42, and anodic electrophoresis 5, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A corrosion-resistant electrophoresis mechanism, comprising an electrophoresis tank (1), characterized in that, The electrophoresis tank (1) is provided with a heat exchange component (2) at the bottom. The heat exchange component (2) is provided with a jet device (3) that is connected and circulated with the electrophoresis tank (1) at the bottom. The upper end face of the electrophoresis tank (1) is provided with a cathode electrophoresis (4) that is spirally raised and lowered. The bottom of the electrophoresis tank (1) is provided with an anode electrophoresis.

2. The corrosion-resistant electrophoresis mechanism according to claim 1, characterized in that, The inner wall of the electrophoresis tank (1) has a stepped structure, which divides the electrophoresis tank (1) into a paint discharge tank (11) and a workpiece placement tank (12). The paint discharge tank (11) is provided with a number of discharge through holes (13), and the workpiece placement tank (12) is provided with a number of workpiece supports (14).

3. The corrosion-resistant electrophoresis mechanism according to claim 1, characterized in that, The inner wall of the electrophoresis tank (1) is provided with a ceramic coating and a fluororubber coating in sequence, and the upper end of the electrophoresis tank (1) is provided with a splash-proof cover plate (18).

4. The corrosion-resistant electrophoresis mechanism according to claim 1, characterized in that, The jet device (3) includes a return water chamber (31) at the bottom of the electrophoresis tank (1). The return water chamber (31) is connected to the electrophoresis tank (1) through a return water pipe (32). A circulation pump (33) is provided on the return water pipe (32). The return water chamber (31) is interconnected with the electrophoresis tank (1) through a jet pipe (34).

5. The corrosion-resistant electrophoresis mechanism according to claim 4, characterized in that, An external filter (35) is connected to the return water pipe (32), and the return water passing through the external filter (35) is connected to the circulation pump (33) through the guide pipe.

6. The corrosion-resistant electrophoresis mechanism according to claim 4, characterized in that, The jet pipe (34) is provided with a jet seat (36) at one end inside the electrophoresis tank (1). The jet seat (36) is provided with a plurality of circumferential jet holes (361) and the upper end of the jet seat (36) is provided with a vertical jet hole (362).

7. The corrosion-resistant electrophoresis mechanism according to claim 4, characterized in that, The heat exchange assembly (2) includes a heat exchange chamber (21) disposed between the return water chamber (31) and the electrophoresis tank (1). The heat exchange chamber (21) is provided with a hot water flow. One end of the heat exchange chamber (21) is connected to the heat exchanger system (22). The jet pipe (34) passes through the heat exchange chamber (21).

8. The corrosion-resistant electrophoresis mechanism according to claim 3, characterized in that, The cathodic electrophoresis (4) includes a spiral cathodic electrophoresis rod (41), and a spiral positioning cylinder (42) is rotatably provided on the anti-splash cover plate (18). The spiral cathodic electrophoresis rod (41) is spirally inserted into the spiral positioning cylinder (42) and its end is inserted into the electrophoresis tank (1).

9. A corrosion-resistant electrophoresis mechanism according to claim 8, characterized in that, One end of the spiral cathode electrophoresis rod (41) is connected to the negative terminal of the power supply, and the anodic electrophoresis is embedded in the inner wall of the bottom of the electrophoresis tank (1), and the anodic electrophoresis is connected to the positive terminal of the power supply.

10. A corrosion-resistant electrophoresis mechanism according to claim 2, characterized in that, The bottom of the paint discharge trough (11) is provided with a hopper (15), the hopper (15) is connected to the discharge through hole (13) through the discharge pipe (16), and the hopper (15) is connected to a discharge pump (17).

Images