External anti-corrosion heat exchange metal pipe and anti-corrosion processing equipment

Abstract

The invention discloses an external anti-corrosion heat exchange metal pipe and anti-corrosion processing equipment, and relates to the technical field of heat exchange equipment, the external anti-corrosion heat exchange metal pipe comprises a pipe body, the external surface of the pipe body is coated with a water-based anti-corrosion paint surface, the external surface of the pipe body is coated with the water-based anti-corrosion paint surface, and therefore the protection and anti-corrosion effects on the exterior of the pipe body are achieved; the water-based anti-corrosion paint surface has a better adhesion effect on the pipe body, so that the pipe body is prevented from wrinkling and flaking during subsequent bending processing, and a good anti-corrosion protection effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchange equipment, in particular to an externally anti-corrosion heat exchange metal pipe and anti-corrosion processing equipment. Background Art

[0002] Heat exchange metal tubes are the main channels for refrigerant to flow in refrigeration equipment. Refrigeration equipment, such as air conditioners or refrigerators, achieves refrigeration effects by exchanging heat with the external environment or the air inside the refrigeration equipment. They play an indispensable and important role in refrigeration equipment. In order to improve the corrosion resistance of heat exchange metal tubes, the commonly used method is to protect the heat exchange metal tubes by coating them with films.

[0003] For example, the Chinese patent publication number is: CN205090666U, and the name of the patent is "An aluminum tube film-wound anti-corrosion evaporator". The patent includes "a layer of hot glue coating film is evenly wound on the outer wall of the aluminum tube, and the aluminum tube after coil treatment is bonded and fixed to the aluminum plate";

[0004] Although the existing method of wrapping the membrane around the metal tube body can play a certain role in protection and anti-corrosion, since the heat exchange metal tube needs to be bent in actual use, such as into a disc or serpentine structure, the disadvantage of the above solution is that wrinkles are likely to appear on the bent part of the heat exchange metal tube, and even partial peeling may occur, resulting in poor overall protection for the heat exchange metal tube. Summary of the invention

[0005] The purpose of the present invention is to provide an external corrosion-resistant heat exchange metal pipe and corrosion-resistant processing equipment to solve the deficiencies in the above-mentioned prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] An externally anti-corrosion heat exchange metal pipe comprises a pipe body, the outer surface of which is coated with a water-based anti-corrosion paint.

[0008] An anti-corrosion processing device for an external anti-corrosion heat exchange metal pipe comprises a containing box containing water-based anti-corrosion paint, a horizontally arranged transmission belt mechanism is installed in the containing box, the transmission belt mechanism comprises a conveyor belt, a plurality of roller assemblies distributed in parallel are rotatably installed on the conveyor belt of the transmission belt mechanism, and each of the roller assemblies can apply water-based anti-corrosion paint to the outer surface of the pipe body above the conveyor belt as the conveyor belt moves.

[0009] Preferably, the roller assembly includes an axle tube with both ends extending out of the conveyor belt, a sponge cover is fixedly sleeved on the tube body of the axle tube, and support frames fixed to the conveyor belt are rotatably mounted on the axle tube at both ends of the sponge cover, and the sponge cover can absorb water-based anti-corrosion paint in the containing box.

[0010] Preferably, the roller assembly and the containing box are connected via a transmission mechanism, the transmission mechanism comprising an upper rack and a lower rack fixed horizontally and parallel to the inner wall of the containing box, the tooth surfaces of the upper rack and the lower rack both facing upward, the transmission mechanism also comprising a gear ring fixedly sleeved with the protruding end of the shaft tube, the gear ring can respectively engage and transmit with the upper rack and the lower rack as the conveyor belt moves, and the shaft tube can drive the sponge sleeve to rotate axially on the conveyor belt during the transmission process.

[0011] Preferably, a fluid replenishing component is provided in the shaft tube, and the fluid replenishing component includes a piston fluid storage unit, the liquid outlet end of the piston fluid storage unit is connected with the sponge sleeve through a liquid distribution tube unit, and the piston fluid storage unit is connected to the containing box through a sliding unit, and when the shaft tube moves to a position above the conveyor belt, the piston fluid storage unit is in a state of extrusion and fluid discharge, and when the shaft tube moves to a position below the conveyor belt, the piston fluid storage unit is in a state of stretching and fluid absorption.

[0012] Preferably, the piston liquid storage unit comprises a plurality of liquid storage cylinders fixed on the inner wall of the shaft tube, each of the liquid storage cylinders is fitted with a piston block, and a piston rod extending out of the liquid storage cylinder is fixed on the piston block.

[0013] Preferably, the liquid dispensing tube unit comprises a plurality of flow guide tubes fixed to the inner wall of the shaft tube, the tube mouth end of the flow guide tube is connected to the liquid discharge end of the liquid storage tube, and the side of the flow guide tube is connected to a plurality of liquid dispensing tubes fixedly penetrating and extending from the shaft tube.

[0014] Preferably, the sliding unit includes a connecting block located in the shaft tube, a card groove adapted to be clamped with the guide tube is opened on the side of the block body of the connecting block, the block body of the connecting block is fixed to the end of each piston rod, a threaded rod is spirally penetrated through the middle of the connecting block, the inserted end of the threaded rod is rotatably installed with a mounting block fixed to the shaft tube, the protruding end of the threaded rod is fixed with a sliding block, and a track groove adapted to be clamped with the sliding block is opened on the inner wall of the accommodating box.

[0015] Preferably, the body of the liquid dispensing tube is located in the sponge sleeve, and a plurality of liquid leakage holes are provided on the side of the liquid dispensing tube.

[0016] Preferably, a rubber sealing pad is fixed to the end of the liquid dispensing tube, and the rubber sealing pad is flush with the surface of the sponge sleeve.

[0017] In the above technical scheme, the present invention provides an external anti-corrosion heat exchange metal tube, which realizes the protection and anti-corrosion effect on the outside of the tube body by coating a water-based anti-corrosion paint on the outer surface of the tube body. The water-based anti-corrosion paint has a better adhesion effect on the tube body, which is beneficial to avoid wrinkling and peeling of the tube body during subsequent bending processing, and has a good anti-corrosion protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic cross-sectional view of an externally anti-corrosion heat exchange metal tube of the present invention;

[0020] Figure 2 It is a three-dimensional schematic diagram of an anti-corrosion processing device for an external anti-corrosion heat exchange metal tube of the present invention;

[0021] Figure 3 It is a schematic diagram of a transmission belt mechanism of an anti-corrosion processing device for an external anti-corrosion heat exchange metal tube of the present invention;

[0022] Figure 4 It is a schematic cross-sectional view of a fluid replenishing component of an anti-corrosion processing device for an external anti-corrosion heat exchange metal tube of the present invention in a shaft tube;

[0023] Figure 5 It is a schematic diagram of a sliding unit of an anti-corrosion processing device for an external anti-corrosion heat exchange metal tube of the present invention in a shaft tube;

[0024] Figure 6 It is a partial cross-sectional schematic diagram of a piston liquid storage unit in a shaft tube of an anti-corrosion processing device for an externally anti-corrosion heat exchange metal tube of the present invention;

[0025] Figure 7 It is a schematic diagram of the sliding blocks of the anti-corrosion processing equipment of the external anti-corrosion heat exchange metal tube of the present invention at both ends of the shaft tube;

[0026] Figure 8 This is a schematic diagram of the track groove on the inner wall of the containing box of the anti-corrosion processing equipment of the external anti-corrosion heat exchange metal tube of the present invention.

[0027] Description of reference numerals:

[0028] 1. Tube body; 2. Water-based anticorrosive paint surface; 3. Container; 4. Transmission belt mechanism; 4.1. Conveyor belt; 5. Roller assembly; 5.1. Shaft tube; 5.2. Sponge sleeve; 5.3. Support frame; 6. Transmission mechanism; 6.1. Upper rack; 6.2. Lower rack; 6.3. Gear ring; 7. Liquid replenishment assembly; 7.1. Piston liquid storage unit; 7.11. Liquid storage cylinder; 7.12. Piston block; 7.13. Piston rod; 7. .2, liquid dispensing pipe unit; 7.21, guide tube; 7.22, liquid dispensing pipe; 7.23, leakage hole; 7.24, rubber sealing pad; 7.3, sliding unit; 7.31, connecting block; 7.32, slot; 7.33, threaded rod; 7.34, mounting block; 7.35, sliding block; 7.36, track groove; 8, slope groove plate; 9, side baffle; 10, opening; 11, material receiving plate; 12, rubber rib. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] See also Figure 1-8 An external anti-corrosion heat exchange metal tube provided in an embodiment of the present invention includes a tube body 1, which is a metal capillary tube. The material of the capillary tube can be aluminum, copper, etc. The outer surface of the tube body 1 is coated with a water-based anti-corrosion paint surface 2, wherein the water-based anti-corrosion paint surface 2 is a paint protective layer formed by curing a water-based anti-corrosion paint on the outer surface of the tube body 1. The water-based anti-corrosion paint can be a water-based acrylic anti-corrosion paint, a water-based epoxy anti-corrosion paint, etc.

[0031] An anti-corrosion processing device for an external anti-corrosion heat exchange metal pipe comprises a containing box 3 containing water-based anti-corrosion paint, the containing box 3 is a box with an open top, a horizontally arranged transmission belt mechanism 4 is installed in the containing box 3, the transmission belt mechanism 4 comprises a conveyor belt 4.1, the conveyor belt 4.1 can be immersed in the water-based anti-corrosion paint when it is located below the transmission belt mechanism 4, the liquid level of the water-based anti-corrosion paint is lower than the top surface of the transmission belt mechanism 4, a plurality of roller assemblies 5 distributed in parallel are rotatably installed on the conveyor belt 4.1 of the transmission belt mechanism 4, the plurality of roller assemblies 5 are evenly distributed along the moving direction of the conveyor belt 4.1, and each roller assembly 5 can apply the water-based anti-corrosion paint to the outer surface of the pipe body 1 above the conveyor belt 4.1 as the conveyor belt 4.1 moves;

[0032] Specifically, the plurality of roller assemblies 5 can move synchronously with the conveyor belt 4.1. When the roller assemblies 5 are located above the conveyor belt 4.1, two adjacent roller assemblies 5 form a supporting portion that can support the pipe body 1. When the pipe body 1 is supported by the supporting portion on the conveyor belt 4.1, the roller assemblies 5 immersed in the water-based anti-corrosion paint adhere the water-based anti-corrosion paint to the outside of the pipe body 1.

[0033] In actual use, the tube bodies 1 arranged above the conveyor belt 4.1 are all supported by the supporting parts formed by the roller assembly 5, and the tube bodies 1 move horizontally synchronously with the conveyor belt 4.1. During this process, the roller assembly 5 supports the tube bodies 1 on the conveyor belt 4.1 while also covering the outer surface of the tube bodies 1 with water-based anti-corrosion paint until the tube bodies 1 reach the end of the transmission belt mechanism 4 as the conveyor belt 4.1 moves, thereby completing the process of covering the tube bodies 1 with water-based anti-corrosion paint.

[0034] In another embodiment provided by the present invention, the roller assembly 5 comprises an axle tube 5.1 with both ends extending out of the conveyor belt 4.1, the axis centerline direction of the axle tube 5.1 is perpendicular to the moving direction line of the conveyor belt, a sponge sleeve 5.2 is fixedly sleeved on the tube body of the axle tube 5.1, and a support frame 5.3 fixed to the conveyor belt 4.1 is rotatably mounted on the axle tube 5.1 at both ends of the sponge sleeve 5.2, and the axle tube 5.1 can rotate axially under the support of the support frame 5.3, and the sponge sleeve 5.2 can absorb the water-based anti-corrosion paint in the containing box 3;

[0035] In actual use, when the roller assembly 5 is located below the transmission belt mechanism 4, the roller assembly 5 can be immersed in the water-based anti-corrosion paint, and the sponge sleeve 5.2 can absorb the water-based anti-corrosion paint. Then the roller assembly 5 continues to rotate with the conveyor belt 4.1, thereby reaching above the transmission belt mechanism 4 and forming a supporting part for supporting the tube body 1. At this time, the axis of the tube body 1 is parallel to the axis of the shaft tube 5.1, and the outer surface of the tube body 1 contacts the outer surface of the sponge sleeve 5.2 that absorbs the water-based anti-corrosion paint, thereby covering the surface of the tube body 1 with the water-based anti-corrosion paint.

[0036] In another embodiment provided by the present invention, the roller assembly 5 is connected to the containing box 3 through a transmission mechanism 6, the transmission mechanism 6 includes an upper rack 6.1 and a lower rack 6.2 fixed horizontally and parallel to the inner wall of the containing box 3, the tooth surfaces of the upper rack 6.1 and the lower rack 6.2 are both facing upward, the upper rack 6.1 and the lower rack 6.2 are on the same vertical plane, the length direction line of the upper rack 6.1 is parallel to the moving trajectory line of the conveyor belt 4.1 above the transmission belt mechanism 4, and the length direction line of the lower rack 6.2 is parallel to the moving trajectory line of the conveyor belt 4.1 below the transmission belt mechanism 4, the transmission mechanism 6 also includes a toothed ring 6.3 fixedly sleeved with the protruding end of the shaft tube 5.1, the toothed ring 6.3 can mesh with the upper rack 6.1 and the lower rack 6.2 respectively as the conveyor belt 4.1 moves, and the shaft tube 5.1 can drive the sponge sleeve 5.2 to rotate axially on the conveyor belt 4.1 during the transmission process;

[0037] Specifically, the conveyor belt 4.1 drives the shaft tube 5.1 to move synchronously. When the shaft tube 5.1 moves horizontally above the transmission belt mechanism 4 along with the conveyor belt 4.1, the gear ring 6.3 and the upper rack 6.1 are in a meshing state. Therefore, while the shaft tube 5.1 moves horizontally above the transmission belt mechanism 4 along with the conveyor belt 4.1, the shaft tube 5.1 also rotates axially under the meshing driving action of the gear ring 6.3, and then counter-rotation and rolling occur between the sponge sleeve 5.2 and the tube body 1, so that the water-based anti-corrosion paint on the sponge sleeve 5.2 can be evenly adhered to the circumferential surface of the tube body 1, so that the water-based anti-corrosion paint evenly and completely covers the circumferential surface of the tube body 1.

[0038] In another embodiment provided by the present invention, a fluid replenishing assembly 7 is provided in the shaft tube 5.1, and the fluid replenishing assembly 7 includes a piston fluid storage unit 7.1, and the fluid outlet end of the piston fluid storage unit 7.1 is connected to the sponge sleeve 5.2 through a liquid distribution pipe unit 7.2, and the piston fluid storage unit 7.1 is connected to the containing box 3 through a sliding unit 7.3. During the movement of the shaft tube 5.1 above the conveyor belt 4.1, the piston fluid storage unit 7.1 is in a state of extruding and discharging fluid, at which time the fluid replenishing assembly 7 can evenly provide water-based anticorrosive paint for the sponge sleeve 5.2, and during the movement of the shaft tube 5.1 below the conveyor belt 4.1, the piston fluid storage unit 7.1 is in a state of stretching and absorbing fluid, at which time the piston fluid storage unit 7.1 absorbs and stores the water-based anticorrosive paint in the containing box 3;

[0039] Among them, the piston liquid storage unit 7.1 includes a plurality of liquid storage cylinders 7.11 fixed on the inner wall of the shaft tube 5.1, and each liquid storage cylinder 7.11 is evenly distributed on the inner wall of the shaft tube 5.1 with the axis of the shaft tube 5.1 as the center of the circle. A piston block 7.12 is adapted to be installed in each liquid storage cylinder 7.11, and the piston block 7.12 can move along the axis of the liquid storage cylinder 7.11. A piston rod 7.13 extending out of the liquid storage cylinder 7.11 is fixed on the piston block 7.12. When the piston rod 7.13 pulls the piston block 7.12 to move toward the mouth of the liquid storage cylinder 7.11, the piston liquid storage unit 7.1 is in a stretched liquid absorption state. When the piston rod 7.13 pushes the piston block 7.12 to move toward the bottom of the liquid storage cylinder 7.11, the piston liquid storage unit 7.1 is in an extruded liquid discharge state.

[0040] In another embodiment provided by the present invention, the liquid dispensing tube unit 7.2 includes a plurality of flow guide tubes 7.21 fixed to the inner wall of the shaft tube 5.1, the axis of the flow guide tube 7.21 is parallel to the axis of the shaft tube 5.1, the tube mouth end of the flow guide tube 7.21 is connected to the discharge end of the liquid storage tube 7.11, and the side of the flow guide tube 7.21 is connected to a plurality of liquid dispensing tubes 7.22 fixedly passing through and extending from the shaft tube 5.1, wherein the tube body of the liquid dispensing tube 7.22 is located in the sponge sleeve 5.2, and a plurality of leakage holes 7.23 are opened on the side of the liquid dispensing tube 7.22, and further, a rubber sealing pad 7.24 is fixed to the end of the liquid dispensing tube 7.22, and the rubber sealing pad 7.24 is flush with the surface of the sponge sleeve 5.2.

[0041] In actual use, when the shaft tube 5.1 is moving above the conveyor belt 4.1, the piston liquid storage unit 7.1 is in a state of extruding and discharging liquid, and the water-based anti-corrosion paint in the liquid storage cylinder 7.11 enters each guide cylinder 7.21, and then the water-based anti-corrosion paint in each guide cylinder 7.21 enters the liquid distribution tube 7.22, and then dispersed in the sponge sleeve 5.2 through the leakage hole 7.23, so as to evenly disperse and supply the water-based anti-corrosion paint to the sponge sleeve 5.2. The rubber sealing pad 7.24 on the sponge sleeve 5.2 increases the frictional force of contact with the tube body 1, which is conducive to the sponge sleeve 5.2 driving the tube body 1 to rotate axially;

[0042] When the shaft tube 5.1 moves below the conveyor belt 4.1, the piston liquid storage unit 7.1 is in a stretched liquid absorption state, and the water-based anti-corrosion paint in the containing box 3 enters the liquid distribution pipe 7.22 through the leakage hole 7.23, and then is collected in the liquid storage cylinder 7.11 through the guide cylinder 7.21, thereby preparing for the supply of water-based anti-corrosion paint to the sponge sleeve 5.2.

[0043] In another embodiment provided by the present invention, the sliding unit 7.3 includes a connecting block 7.31 located in the shaft tube 5.1, a card slot 7.32 adapted to be snap-fitted with the guide tube 7.21 is provided on the side of the block body of the connecting block 7.31, the block body of the connecting block 7.31 is fixed to the ends of each piston rod 7.13, a threaded rod 7.33 is spirally penetrated through the middle of the connecting block 7.31, a mounting block 7.34 fixed to the shaft tube 5.1 is rotatably installed at the inserted end of the threaded rod 7.33, a sliding block 7.35 is fixed to the extended end of the threaded rod 7.33, a track groove 7.36 adapted to be snap-fitted with the sliding block 7.35 is provided on the inner wall of the accommodating box 3, the track line of the track groove 7.36 is a circular closed track line, and the track line of the track groove 7.36 is aligned with the side moving track line of the conveyor belt 4.1;

[0044] In actual use, the sliding block 7.35 always moves synchronously with the corresponding conveyor belt 4.1 in the track groove 7.36, thereby limiting the axial rotation of the threaded rod 7.33. Therefore, during the axial rotation of the shaft tube 5.1, the connecting block 7.31 rotates relative to the threaded rod 7.33. For example, when the shaft tube 5.1 moves to a position below the conveyor belt 4.1, the connecting block 7.31 can move toward the mouth of the liquid storage cylinder 7.11 by pulling the piston block 7.12. When the shaft tube 5.1 moves to a position above the conveyor belt 4.1, the connecting block 7.31 pushes the piston block 7.12 to move toward the bottom of the liquid storage cylinder 7.11 through the piston rod 7.13, thereby achieving synchronous application of force to the piston block 7.12, so that according to the different positions of the shaft tube 5.1, the piston storage unit 7.1 is controlled to automatically switch between the stretched liquid absorption state and the squeezed liquid discharge state.

[0045] In another embodiment provided by the present invention, a sloped groove plate 8 is fixed to one end of the top of the receiving box 3, and side baffles 9 are distributed on both sides of the sloped groove plate 8. The ends of each side baffle 9 are fixed to the inner wall of the receiving box 3, and the two side baffles 9 are respectively located on both sides of the conveyor belt 4.1, so as to prevent the tube body 1 on the top of the conveyor belt 4.1 from falling. The length direction line of the side baffle 9 is parallel to the moving direction line of the conveyor belt 4.1. An opening 10 is opened at the other end of the receiving box 3, and a material receiving plate 11 is fixed in the opening 10. The material receiving plate 11 is an inclined plate, and a plurality of rubber ribs 12 are fixed to the top surface of the material receiving plate 11. The length direction of the rubber ribs 12 is consistent with the length direction of the material receiving plate 11. The strip body of the rubber ribs 12 is coated with hydrophobic paint to prevent contamination of water-based anti-corrosion paint. Preferably, the cross-section of the rubber ribs is triangular to reduce the contact area with the tube body 1.

[0046] In actual use, multiple tubes 1 roll along the inclined trough plate 8 toward the top of the conveyor belt 4.1, and are then conveyed in sequence through the conveyor belt 4.1. The side baffles 9 on both sides of the conveyor belt 4.1 can prevent the tubes 1 from falling during the conveying process. When the tubes 1 reach the end of the conveyor belt 4.1, they fall onto the receiving plate 11, and the tubes 1 come into contact with the edges of the rubber ribs 12. Then, the tubes 1 roll on the rubber ribs 12 and are transferred to the next process.

[0047] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An externally anti-corrosion heat exchange metal tube, comprising a tube body (1), characterized in that: The outer surface of the pipe body (1) is coated with a water-based anti-corrosion paint (2).

2. An anti-corrosion processing equipment for an external anti-corrosion heat exchange metal tube, used for the anti-corrosion processing of the external anti-corrosion heat exchange metal tube according to claim 1, characterized in that: The invention comprises a container (3) containing water-based anticorrosive paint, wherein a horizontally arranged transmission belt mechanism (4) is installed in the container (3), wherein the transmission belt mechanism (4) comprises a conveyor belt (4.1), wherein a plurality of roller assemblies (5) arranged in parallel are rotatably installed on the conveyor belt (4.1) of the transmission belt mechanism (4), and each of the roller assemblies (5) can apply the water-based anticorrosive paint to the outer surface of the pipe body (1) above the conveyor belt (4.1) as the conveyor belt (4.1) moves.

3. The anti-corrosion processing equipment for external anti-corrosion heat exchange metal tube according to claim 2, characterized in that: The roller assembly (5) comprises an axle tube (5.1) with both ends extending out of the conveyor belt (4.1); a sponge sleeve (5.2) is fixedly sleeved on the tube body of the axle tube (5.1); support frames (5.3) fixed to the conveyor belt (4.1) are rotatably mounted on the axle tube (5.1) at both ends of the sponge sleeve (5.2); and the sponge sleeve (5.2) can absorb water-based anti-corrosion paint in the containing box (3).

4. The anti-corrosion processing equipment for external anti-corrosion heat exchange metal tube according to claim 3, characterized in that: The roller assembly (5) is connected to the containing box (3) via a transmission mechanism (6). The transmission mechanism (6) comprises an upper rack (6.1) and a lower rack (6.2) fixed horizontally and parallel to the inner wall of the containing box (3). The tooth surfaces of the upper rack (6.1) and the lower rack (6.2) are both facing upward. The transmission mechanism (6) also comprises a toothed ring (6.3) fixedly sleeved with the protruding end of the shaft tube (5.1). The toothed ring (6.3) can mesh with the upper rack (6.1) and the lower rack (6.2) respectively as the conveyor belt (4.1) moves. During the transmission process, the shaft tube (5.1) can drive the sponge sleeve (5.2) to rotate axially on the conveyor belt (4.1).

5. The anti-corrosion processing equipment for external anti-corrosion heat exchange metal tube according to claim 4, characterized in that: A fluid replenishment component (7) is arranged inside the shaft tube (5.1), and the fluid replenishment component (7) comprises a piston fluid storage unit (7.1). The fluid outlet end of the piston fluid storage unit (7.1) is connected to the sponge sleeve (5.2) via a liquid distribution pipe unit (7.2), and the piston fluid storage unit (7.1) is connected to the containing box (3) via a sliding unit (7.3). When the shaft tube (5.1) moves to a position above the conveyor belt (4.1), the piston fluid storage unit (7.1) is in a state of extruding and discharging fluid, and when the shaft tube (5.1) moves to a position below the conveyor belt (4.1), the piston fluid storage unit (7.1) is in a state of stretching and absorbing fluid.

6. The anti-corrosion processing equipment for external anti-corrosion heat exchange metal tube according to claim 5, characterized in that: The piston liquid storage unit (7.1) comprises a plurality of liquid storage cylinders (7.11) fixed on the inner wall of the shaft tube (5.1), each of the liquid storage cylinders (7.11) being fitted with a piston block (7.12), and a piston rod (7.13) extending out of the liquid storage cylinder (7.11) being fixed on the piston block (7.12).

7. The anti-corrosion processing equipment for external anti-corrosion heat exchange metal tube according to claim 6, characterized in that: The liquid dispensing tube unit (7.2) comprises a plurality of flow guide tubes (7.21) fixed to the inner wall of the shaft tube (5.1); the tube mouth end of the flow guide tube (7.21) is connected to the liquid discharge end of the liquid storage tube (7.11); and the side of the flow guide tube (7.21) is connected to a plurality of liquid dispensing tubes (7.22) fixedly penetrating and extending from the shaft tube (5.1).

8. The anti-corrosion processing equipment for external anti-corrosion heat exchange metal tube according to claim 7, characterized in that: The sliding unit (7.3) comprises a connecting block (7.31) located in the shaft tube (5.1); a groove (7.32) adapted to be engaged with the guide tube (7.21) is provided on the side of the block body of the connecting block (7.31); the block body of the connecting block (7.31) is fixed to the end of each piston rod (7.13); a threaded rod (7.33) is spirally penetrated through the middle of the connecting block (7.31); a mounting block (7.34) fixed to the shaft tube (5.1) is rotatably mounted on the inserted end of the threaded rod (7.33); a sliding block (7.35) is fixed to the extended end of the threaded rod (7.33); and a track groove (7.36) adapted to be engaged with the sliding block (7.35) is provided on the inner wall of the accommodating box (3).

9. The anti-corrosion processing equipment for external anti-corrosion heat exchange metal tube according to claim 8, characterized in that: The body of the liquid dispensing tube (7.22) is located inside the sponge sleeve (5.2), and a plurality of liquid leakage holes (7.23) are provided on the side of the liquid dispensing tube (7.22).

10. The anti-corrosion processing equipment for external anti-corrosion heat exchange metal tube according to claim 9, characterized in that: A rubber sealing pad (7.24) is fixed to the end of the liquid dispensing tube (7.22), and the rubber sealing pad (7.24) is flush with the surface of the sponge sleeve (5.2).

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