Heat exchanger shell machining surface treatment device

Abstract

The utility model belongs to the technical field of heat exchanger shell machining, and particularly relates to a heat exchanger shell machining surface treatment device which comprises an electrolytic bath and a lifting appliance, the lifting appliance comprises a connecting rod, two center blocks are installed on the lower side of the connecting rod through two lifting rods, and driving wheels are installed on the upper sides of the two center blocks. The center block is provided with three telescopic supporting arms which are annularly arrayed by taking the axis of the center block as the circle center, one telescopic supporting arm is located on the upper side of the center block and fixedly connected with the driving wheel, the other two telescopic supporting arms are fixedly connected with limiting driven wheels, and each telescopic supporting arm comprises three sliding arms; the driving wheel and the limiting driven wheel are fixedly connected to the three sliding arms correspondingly, and the sliding arms are connected to the center block in a sliding mode. According to the tubular heat exchanger shell electroplating device, electroplating dead angles can be reduced in the process of electroplating the tubular heat exchanger shell, and the inner surface and the outer surface of the heat exchanger shell can be uniformly electroplated.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger shell processing technology, and specifically relates to a surface treatment device for heat exchanger shell processing. Background Technology

[0002] Heat exchangers, widely used in numerous industries such as chemical, power, metallurgy, and food processing, directly impact the efficiency and cost of the entire production system. Tubular heat exchangers, due to their simple structure, ease of manufacturing, and strong adaptability, have become one of the most commonly used heat exchanger types in industrial applications.

[0003] In practical applications, the shell of a tubular heat exchanger typically comes into direct contact with various corrosive media, such as acids, alkalis, and salt solutions. Furthermore, harsh operating conditions such as high temperature, high pressure, and high-speed fluid erosion can cause varying degrees of wear and damage to the shell surface. These factors can lead to corrosion and scaling on the heat exchanger shell surface, not only reducing heat transfer efficiency and increasing energy consumption, but also potentially causing safety accidents such as equipment leaks, shortening equipment lifespan, and resulting in significant economic losses for the company.

[0004] To improve the corrosion resistance, wear resistance, and scale resistance of tubular heat exchanger shells and extend their service life, electroplating is typically required. Electroplating is a process that deposits a layer of metal or alloy onto a metal surface through electrolysis, forming a dense protective layer on the shell surface that effectively isolates it from external corrosive media.

[0005] However, existing surface treatment equipment for heat exchanger shells typically uses a hanger to place the shell inside the electrolytic tank during electroplating. During electroplating, dead zones exist in the area where the shell contacts the hanger. The electrolyte flow in these areas is impeded, making it difficult for the plating solution to fully cover the shell, resulting in uneven plating thickness and even missed plating, severely impacting the shell's protective performance. Utility Model Content

[0006] The purpose of this invention is to provide a surface treatment device for heat exchanger shells, which can reduce dead corners in the electroplating process of tubular heat exchanger shells and perform electroplating on the inner and outer surfaces of the heat exchanger shells more evenly.

[0007] The specific technical solution adopted by this utility model is as follows:

[0008] A surface treatment apparatus for processing heat exchanger shells includes an electrolytic cell and a lifting device;

[0009] The lifting device includes a connecting rod, and two center blocks are mounted on the lower side of the connecting rod via two lifting rods. A drive wheel is mounted on the upper side of the two center blocks.

[0010] Furthermore, the central block is equipped with three telescopic arms arranged in a circular array with the central block's axis as the center. One of the telescopic arms is located on the upper side of the central block and is fixedly connected to a drive wheel. The other two telescopic arms are fixedly connected to limit driven wheels.

[0011] Furthermore, the telescopic arm includes three sliding arms, the drive wheel and the limiting driven wheel are respectively fixedly connected to the three sliding arms, the sliding arms are slidably connected to the central block, and the central block is internally rotatably connected to three second threaded rods, the three second threaded rods are respectively threadedly connected to the three sliding arms, and a third motor is fixedly connected to the central block, the output end of the third motor is connected to the second threaded rods through a bevel gear transmission group.

[0012] Furthermore, both the drive wheel and the limiting driven wheel include a U-shaped frame fixedly connected to the sliding arm, and a rotating wheel is rotatably connected to the U-shaped frame. The drive wheel also includes a second motor fixedly connected to the boom, and the second motor and the rotating wheel are connected by a belt drive assembly.

[0013] Furthermore, two limiting rods located on both sides of the rotating wheel are fixedly connected to the sliding arm, and a rotating drum is rotatably connected to the outer side of the limiting rods.

[0014] Furthermore, two sliders are slidably connected to the connecting rod, the hanging rod is fixedly connected to the sliders, and a first motor is also fixedly connected to the connecting rod. The output end of the first motor is fixedly connected to a first threaded rod that is threadedly connected to the slider.

[0015] The technical effects achieved by this utility model are as follows:

[0016] This utility model discloses a surface treatment device for heat exchanger shells. During the electroplating process of a tubular heat exchanger shell, starting the drive wheel causes the tubular heat exchanger shell to rotate, resulting in a continuous change in the contact position between the inner wall of the tubular heat exchanger shell and the drive wheel. This ensures that both the inner and outer surfaces of the tubular heat exchanger shell can be in relatively uniform contact with the electrolyte, reducing electroplating dead zones and enabling relatively uniform electroplating treatment of the inner and outer surfaces of the heat exchanger shell. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a structural schematic diagram of the lifting device of this utility model;

[0019] Figure 3 This is a partial structural schematic diagram of the lifting device of this utility model;

[0020] Figure 4 This is a cross-sectional structural diagram of the central block of this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Electrolytic cell; 2. Lifting device; 3. Tubular heat exchanger shell; 4. Connecting rod; 5. First motor; 6. First threaded rod; 7. Sliding block; 8. Lifting rod; 9. Center block; 10. Sliding arm; 11. U-shaped frame; 12. Rotary wheel; 13. Limiting rod; 14. Rotary drum; 15. Second motor; 16. Belt drive assembly; 17. Third motor; 18. Second threaded rod; 19. Bevel gear drive assembly. Detailed Implementation

[0023] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0024] like Figures 1-4 As shown, a surface treatment device for processing heat exchanger shells includes an electrolytic cell 1 and a lifting device 2;

[0025] The lifting device 2 includes a connecting rod 4, which is used to connect to a moving device such as a crane.

[0026] Two center blocks 9 are installed on the lower side of the connecting rod 4 via two lifting rods 8. Drive wheels are installed on the upper side of the two center blocks 9. At this time, the two ends of the tubular heat exchanger shell 3 are respectively sleeved on the outside of the two drive wheels, so that the drive wheels contact the inner wall of the upper side of the tubular heat exchanger shell 3. Then, the lifting device 2 is moved to move the tubular heat exchanger shell 3 into the electrolytic tank 1, so that the tubular heat exchanger shell 3 can be electroplated. During the electroplating process, starting the drive wheels can drive the tubular heat exchanger shell 3 to rotate. During the rotation of the tubular heat exchanger shell 3, the contact position between the inner wall of the tubular heat exchanger shell 3 and the drive wheel continuously changes, so that the inner and outer surfaces of the tubular heat exchanger shell 3 can be in relatively uniform contact with the electrolyte, reducing electroplating dead corners, and thus enabling relatively uniform electroplating treatment of the inner and outer surfaces of the heat exchanger shell.

[0027] Two sliders 7 are slidably connected to the connecting rod 4, and the hanging rod 8 is fixedly connected to the sliders 7. The first motor 5 is also fixedly connected to the connecting rod 4. The output end of the first motor 5 is fixedly connected to the first threaded rod 6, which is threadedly connected to the sliders 7. At this time, by starting the first motor 5, the sliders 7 can be driven to slide. The position of the center block 9 and the drive wheel can be adjusted. By adjusting the distance between the two drive wheels, the shells 3 of tubular heat exchangers of different lengths can be adapted.

[0028] At the same time, such as Figures 1-3 As shown, three telescopic arms are installed on the central block 9 in a circular array with the axis of the central block 9 as the center. One telescopic arm is located on the upper side of the central block 9 and is fixedly connected to the drive wheel. The other two telescopic arms are fixedly connected to limit driven wheels. At this time, when the tubular heat exchanger shell 3 is installed on the drive wheel, the telescopic arm is activated to drive the limit driven wheels to abut against the inner wall of the tubular heat exchanger shell 3. The two limit driven wheels can limit the tubular heat exchanger shell 3, thereby improving the installation stability of the tubular heat exchanger shell 3.

[0029] like Figures 2-4 As shown, the telescopic boom includes three sliding arms 10. A drive wheel and a limit driven wheel are fixedly connected to the three sliding arms 10 respectively. The sliding arms 10 are slidably connected to the central block 9. Three second threaded rods 18 are rotatably connected inside the central block 9. The three second threaded rods 18 are threadedly connected to the three sliding arms 10 respectively. By rotating the second threaded rods 18, the sliding arms 10 can be driven to extend and retract, and can be locked after extension and retraction. In order to drive multiple sliding arms 10 to extend and retract synchronously, a third motor 17 is fixedly connected to the central block 9. The output end of the third motor 17 is connected to the second threaded rods 18 through a bevel gear transmission group 19. At this time, by starting the third motor 17, the second threaded rods 18 can be driven to rotate.

[0030] Both the drive wheel and the limit driven wheel include a U-shaped frame 11 fixedly connected to the sliding arm 10. A rotating wheel 12 is rotatably connected to the U-shaped frame 11. The drive wheel also includes a second motor 15 fixedly connected to the boom 8. The second motor 15 and the rotating wheel 12 are connected by a belt drive group 16. The belt drive group 16 allows the second motor 15 to be positioned above the electrolyte surface.

[0031] Meanwhile, two limiting rods 13 are fixedly connected to the sliding arm 10, which are located on both sides of the rotating wheel 12. The limiting rods 13 can limit the end of the tubular heat exchanger shell 3. A rotating cylinder 14 is rotatably connected to the outside of the limiting rods 13. During the rotation of the tubular heat exchanger shell 3, the rotation of the rotating cylinder 14 can reduce wear.

[0032] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A surface treatment apparatus for processing heat exchanger shells, characterized in that: Includes an electrolytic cell (1) and a lifting device (2); The lifting device (2) includes a connecting rod (4), and two center blocks (9) are mounted on the lower side of the connecting rod (4) via two lifting rods (8). A drive wheel is mounted on the upper side of the two center blocks (9).

2. The surface treatment device for heat exchanger shell processing according to claim 1, characterized in that: The central block (9) is equipped with three telescopic arms arranged in a circular array with the axis of the central block (9) as the center. One of the telescopic arms is located on the upper side of the central block (9). The telescopic arm is fixedly connected to the drive wheel. The other two telescopic arms are fixedly connected to limit driven wheels.

3. A heat exchanger shell machining surface treatment apparatus according to claim 2, wherein: The telescopic arm includes three sliding arms (10), the drive wheel and the limiting driven wheel are fixedly connected to the three sliding arms (10), the sliding arms (10) are slidably connected to the center block (9), the center block (9) is rotatably connected to three second threaded rods (18), the three second threaded rods (18) are threadedly connected to the three sliding arms (10) respectively, and a third motor (17) is fixedly connected to the center block (9). The output end of the third motor (17) and the second threaded rods (18) are connected by a bevel gear transmission group (19).

4. A heat exchanger shell machining surface treatment apparatus according to claim 3, wherein: Both the drive wheel and the limiting driven wheel include a U-shaped frame (11) fixedly connected to the sliding arm (10), and a rotating wheel (12) is rotatably connected to the U-shaped frame (11). The drive wheel also includes a second motor (15) fixedly connected to the boom (8). The second motor (15) and the rotating wheel (12) are connected by a belt drive group (16).

5. A heat exchanger shell machining surface treatment apparatus according to claim 4, wherein: Two limiting rods (13) are fixedly connected to the sliding arm (10) on both sides of the rotating wheel (12), and a rotating cylinder (14) is rotatably connected to the outer side of the limiting rods (13).

6. The surface treatment device for heat exchanger shell processing according to claim 1, characterized in that: Two sliders (7) are slidably connected to the connecting rod (4), the hanging rod (8) is fixedly connected to the sliders (7), and a first motor (5) is also fixedly connected to the connecting rod (4). The output end of the first motor (5) is fixedly connected to a first threaded rod (6) that is threadedly connected to the slider (7).

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