Coating device based on corrosion prevention of cold exchange equipment and coating method thereof

Abstract

The invention relates to the technical field of coating devices, in particular to a coating device based on corrosion prevention of cold exchange equipment and a coating method thereof.The coating device comprises an anti-corrosion coating mixing box, mounting grooves are fixedly connected to the two sides of the outer wall of the top of the anti-corrosion coating mixing box, and fixing rods are slidably connected to the interiors of the mounting grooves; the outer walls of one ends of the two fixing rods are fixedly connected with an anticorrosive paint temporary storage box, and the outer wall of the top of the anticorrosive paint temporary storage box is fixedly connected with a supporting seat. The anti-corrosion coating filtering device has the beneficial effects that the anti-corrosion coating can be more uniformly distributed on the filter screen through rotation of the filter screen in the filtering process, local accumulation of the coating on the filter screen is avoided, the filtering efficiency is correspondingly improved, meanwhile, blockage can be effectively prevented through the rotating filter screen, the service life of the filter screen is prolonged, and the anti-corrosion coating can be more uniformly filtered through rotary filtering. Large particles and cakes in the anticorrosive paint can be removed more thoroughly, so that the purity and quality of the paint are improved, and the attractiveness of the outer wall of the tube bundle is improved.

Description

Technical Field

[0001] The present invention relates to the field of coating devices, in particular to a coating device based on cold exchange equipment anti-corrosion and a coating method thereof. Background Art

[0002] Heat exchange equipment is widely used in oil refining, chemical industry, light industry, pharmaceutical industry, machinery, food processing, power and atomic energy industry. In modern refineries, heat exchangers account for more than 40% of the total process equipment investment. Their normal operation and service life have a direct impact on the production efficiency and product quality of the refinery.

[0003] However, due to the existence of corrosion problems, the performance and service life of heat exchange equipment will be affected, so anti-corrosion treatment is particularly important, especially for shell and tube heat exchangers. The tube bundle is prone to leakage due to its thin wall thickness. It is of great practical significance to effectively avoid corrosion factors and maximize the long-term normal use of the heat exchanger.

[0004] However, in the prior art, when anti-corrosion spraying is performed on the tube bundle, if large particles and agglomerates in the anti-corrosion coating are not filtered, after the tube bundle is sprayed, the outer wall of the tube bundle will have threading spots and sagging, thereby affecting the appearance of the outer wall of the tube bundle. Summary of the invention

[0005] The object of the present invention is to provide a coating device and a coating method based on cold exchange equipment anti-corrosion, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: the anti-corrosion coating device for cold exchange equipment comprises: an anti-corrosion coating mixing box, mounting grooves are fixedly connected to both sides of the top outer wall of the anti-corrosion coating mixing box, a fixing rod is slidably connected inside the mounting groove, an anti-corrosion coating temporary storage box is fixedly connected to the outer wall of one end of the two fixing rods, a support seat is fixedly connected to the outer wall of the top of the anti-corrosion coating temporary storage box, an adjusting shell is fixedly connected to the outer wall of one side of the support seat, and a motor is fixedly connected to the outer wall of one side of the anti-corrosion coating temporary storage box.

[0007] Preferably, the output end of the motor is fixedly connected to the main shaft, the outer wall of the main shaft is fixedly connected to a fixing ring, the outer walls of the two fixing rings are movably connected to a connecting ring, a filter is fixedly connected to the middle of the outer walls of the connecting rings, the outer wall of the filter is fixedly connected to a mounting plate, and the outer wall of the mounting plate is rotatably connected to the inside of the anti-corrosion paint temporary storage box.

[0008] Preferably, the outer walls of the connecting ring are fixedly connected to support plates on both sides of the filter screen, and the outer walls of the opposite sides of the support plates are fixedly connected to breaking rods. The outer wall of the mounting plate is provided with a groove, and a cleaning scraper is movably inserted inside the groove. The outer wall of the cleaning scraper is rotatably connected to the inside of the anti-corrosion paint temporary storage box.

[0009] Preferably, a placement groove is provided inside the connecting ring, the placement groove is rotatably connected to a limiting ring inside, a storage groove is provided inside the limiting ring, the storage groove is fixedly connected to a support rod inside, the outer wall of the support rod is rotatably connected to the limiting rod, the outer wall of the top of the limiting rod is fixedly connected to an elastic block, the outer wall of the top of the elastic block is fixedly connected to the inside of the storage groove, a card slot is provided on the outer wall of the fixing ring, and the outer wall of the limiting rod is movably plugged into the inside of the elastic block.

[0010] Preferably, a track is provided on the outer wall of one side of the connecting ring, a push spring is fixedly connected to the inside of the track, a pull rod is fixedly connected to the outer wall of one end of the push spring, the outer wall of the pull rod is slidably connected to the inside of the track, and the outer wall of one end of the pull rod is fixedly connected to the outer wall of one side of the limit ring.

[0011] Preferably, the interior of the adjusting shell is rotatably connected to a bidirectional screw rod, the outer wall of the bidirectional screw rod is threadedly connected to a moving block, the outer wall on one side of the moving block is rotatably connected to a rotating rod, the outer wall of the rotating rod is fixedly connected to limiting tooth 2, the interior of the adjusting shell is fixedly connected to limiting tooth 1 near the bottom of limiting tooth 2, the outer wall of one end of the bidirectional screw rod passes through the outer wall of the rotating adjusting shell and is fixedly connected to a handle, the outer wall on one side of the moving block is rotatably connected to a fixed seat, and the outer wall on one side of the fixed seat is fixedly connected to a spray gun.

[0012] Preferably, the outer wall of the main shaft is located on the outside of the anti-corrosion paint temporary storage box and is fixedly connected to a gear, the outer wall on one side of the anti-corrosion paint temporary storage box is fixedly connected to a limiting shell, the interior of the limiting shell is slidably connected to a mounting rod, the outer walls on both sides of the mounting rod are fixedly connected to a gear seat, the interior of the limiting shell is fixedly connected to a limiting component, and the outer wall on one side of the limiting component is movably plugged into the interior of the gear seat.

[0013] Preferably, the outer wall at the top of the gear is slidably connected with a slide groove, the interior of the slide groove is fixedly connected with a return spring, the outer wall of one end of the return spring is fixedly connected to the outer wall of one side of the gear, the outer wall of the gear is meshingly connected with the outer wall tooth seat on one side of the mounting rod, and one side inside the limit shell is fixedly connected with a magnetic block, and the magnetic block is attracted and slidably connected to the outer wall of one side of the mounting rod.

[0014] The coating method based on cold exchange equipment anti-corrosion is realized by a coating device based on cold exchange equipment anti-corrosion. The coating method based on cold exchange equipment anti-corrosion comprises the following steps:

[0015] Step 1: Pre-treatment before painting:

[0016] ① Use sandblasting to remove rust from the surface of the tube bundle to be coated. After the rust removal, there is no visible grease, dirt, scale, rust, old coating and other attachments on the surface of the tube bundle, and the original color of the metal is retained. The rust removal level reaches Sa2.5 level specified in GB / T 8923.1;

[0017] ② Before sandblasting, the sealing surface of the tube bundle should be protected.

[0018] Step 2: Coating method: Use the pouring coating method to coat TH-901 and SHY-99.

[0019] Step 3: Paint mixing:

[0020] ① Pour the divided paint and thinner into a clean paint mixing tank according to the specified proportion, stir and mix them evenly, cover the empty bucket and place it in the specified position;

[0021] ② Adjust the viscosity of the coating according to the construction temperature. See the table below for the control viscosity:

[0022] Temperature, °C 10 15 20 25 30 35 Viscosity, s 45 40 35 30 25 20

[0023] ③ When painting, use a 100-200 mesh screen to filter out large particles and lumps.

[0024] Step 4: Hoisting: Hoist the qualified surface treated pipe bundle onto the painting platform, with one end high and the other end low, and place it at a large tilt angle. If conditions permit, it is best to place the pipe bundle upright.

[0025] Step 5: Filling:

[0026] ① Carry out coating construction on the surface of the tube bundle within 4 hours after the tube bundle surface is sandblasted;

[0027] ② Place the paint receiving tank at the bottom of the tube bundle, insert the paint pump nozzle into the upper tube mouth, turn on the paint pump to pour paint into each heat exchange tube, and stop pouring paint after the paint at the lower tube mouth flows steadily in a column for more than 5 seconds. Pour paint one tube at a time in sequence without missing any;

[0028] ③ After the tube bundle is coated, it can be dried by natural ventilation or forced ventilation. The surface drying time should be determined according to factors such as the coating, tube bundle and temperature. The surface is qualified when the coating surface is not sticky and there are no fingerprints when you touch it with your finger.

[0029] ④When the paint on the lower pipe mouth is dripping and dry, use a brush to remove the dripping and falling of the lower pipe mouth in time; ⑤After the coating film is dry, carry out the next coating construction;

[0030] ⑥ Starting from the second coating, the tilted tube bundle should be rotated 90° each time, and the lifting end should be replaced, and the next coating should be carried out from the other end until 6 coatings are completed;

[0031] ⑦ For each coating, the leveling of the coating should be checked. If any dripping, wrinkling, bubbles, dripping, missing coating or pinholes are found, the cause should be analyzed and corresponding treatment measures should be taken to correct it;

[0032] ⑧ If the coating is damaged, it can be polished with sandpaper and cleaned with a brush dipped in solvent before repairing;

[0033] ⑨ No coating residue is allowed on the sealing surface of the tube bundle.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The coating device and coating method based on cold exchange equipment anti-corrosion proposed in the present invention can make the anti-corrosion coating more evenly distributed on the filter net during the filtration process through the rotation of the filter net, avoiding local accumulation of the coating on the filter net and correspondingly improving the filtration efficiency. At the same time, the rotating filter net can also effectively prevent clogging and extend the service life of the filter net. Through rotary filtration, large particles and lumps in the anti-corrosion coating can be more thoroughly removed, thereby improving the purity and quality of the coating and increasing the beauty of the outer wall of the tube bundle. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the structure of the present invention;

[0037] Figure 2 This is a schematic diagram of the structure of the temporary storage box for anti-corrosion coatings of the present invention;

[0038] Figure 3 This is a schematic diagram of the main shaft structure of the present invention;

[0039] Figure 4 This is a schematic diagram of the filter structure of the present invention;

[0040] Figure 5 This is a schematic diagram of the structure of the mounting plate of the present invention;

[0041] Figure 6 For the present invention Figure 4 A is an enlarged schematic diagram of the structure at location A;

[0042] Figure 7 For the present invention Figure 5 The enlarged structural diagram at location B;

[0043] Figure 8 For the present invention Figure 2 The enlarged structural diagram at C;

[0044] Fig. 9 This is a schematic diagram of the support base structure of the present invention;

[0045] Fig.10 For the present invention Fig. 9 The enlarged structural diagram at D;

[0046] Fig.11 For the present invention Fig.10 Enlarged structural diagram at E.

[0047] In the figure: 1. Anticorrosive paint mixing box; 2. Anticorrosive paint temporary storage box; 3. Adjustment shell; 31. Support seat; 4. Motor; 41. Main shaft; 42. Connecting ring; 43. Filter screen; 44. Support plate; 45. Mounting plate; 46. Cleaning scraper; 47. Breaking rod; 48. Fixed ring; 5. Track; 51. Push spring; 52. Pull rod; 53. Limiting ring; 54. Slot; 55. Support rod; 56. Limiting rod; 57. Elastic block; 6. Bidirectional screw rod; 61. Limiting tooth 1;

[0048] 62. Rotating rod; 63. Second limiting tooth; 64. Moving block; 65. Handle; 7. Spray gun;

[0049] 8. gear; 81. mounting rod; 82. gear seat; 83. limit housing; 84. limit assembly;

[0050] 85. Slide groove; 86. Return spring. DETAILED DESCRIPTION

[0051] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] Embodiment 1

[0053] See also Figure 1 - Fig.11The present invention provides a coating device based on cold exchange equipment anti-corrosion and a coating method technical solution: the coating device for cold exchange equipment anti-corrosion includes: an anti-corrosion paint mixing box 1, both sides of the top outer wall of the anti-corrosion paint mixing box 1 are fixedly connected with mounting grooves, and the inner part of the mounting groove is slidably connected with a fixing rod, and the outer wall of one end of the two fixing rods is fixedly connected with an anti-corrosion paint temporary storage box 2, and the outer wall of the top of the anti-corrosion paint temporary storage box 2 is fixedly connected with a support seat 31, and the outer wall of one side of the support seat 31 is fixedly connected with an adjustment shell 3, and the outer wall of one side of the anti-corrosion paint temporary storage box 2 is fixedly connected with a motor 4, and the output end of the motor 4 is fixedly connected with a main shaft 41, and the outer wall of the main shaft 41 is fixedly connected with a fixing ring 48, and the outer walls of the two fixing rings 48 are movably connected with a connecting ring 42, and the middle position of the outer wall of the connecting ring 42 is fixedly connected with a filter screen 43, and the outer wall of the filter screen 43 is fixedly connected with a mounting plate 45, and the outer wall of the mounting plate 45 is rotatably connected to the inside of the anti-corrosion paint temporary storage box 2.

[0054] The rotation of the filter 43 can make the anti-corrosion paint more evenly distributed on the filter 43 during the filtering process, avoiding local accumulation of the paint on the filter 43, and correspondingly improving the filtering efficiency. At the same time, the rotating filter 43 can also effectively prevent clogging, extending the service life of the filter 43. Through rotary filtration, large particles and lumps in the anti-corrosion paint can be more thoroughly removed, thereby improving the purity and quality of the paint and increasing the beauty of the outer wall of the tube bundle.

[0055] Embodiment 2

[0056] On the basis of embodiment one, the outer wall of the connecting ring 42 is fixedly connected to the support plates 44 on both sides of the filter screen 43, and the outer walls of the opposite sides of the multiple support plates 44 are fixedly connected to the breaking rods 47. The outer wall of the mounting plate 45 is provided with a groove, and the inside of the groove is movably inserted with a cleaning scraper 46. The outer wall of the cleaning scraper 46 is rotatably connected to the inside of the anti-corrosion paint temporary storage box 2.

[0057] During the rotation process, the crushing rod 47 physically crushes the large particles or lumps in the anti-corrosion coating to make them finer, which not only helps the anti-corrosion coating to pass through the filter 43 more evenly, but also ensures the fineness and consistency of the final anti-corrosion coating, and improves the overall quality of the coating. The stirring effect of the crushing rod 47 is not limited to crushing particles, but also promotes the mixing of various components in the coating. The anti-corrosion coating is stirred while passing through the filter 43, which helps to achieve uniform mixing of the anti-corrosion coating.

[0058] When the cleaning scraper 46 is driven to rotate by the mounting plate 45, the anti-corrosion paint inside the anti-corrosion paint temporary storage box 2 is scraped off, thereby avoiding adding new paint before the previous paint is completely cleaned, and the two paints will be mixed together, resulting in changes in the composition and performance of the paint. The scraping action of the cleaning scraper 46 ensures the cleanliness of the interior of the temporary storage box, and correspondingly prevents the mixing of different paints, thereby ensuring the purity and performance stability of the paint.

[0059] Embodiment 3

[0060] On the basis of the second embodiment, the inside of the adjusting shell 3 is rotatably connected with a bidirectional screw rod 6, the outer wall of the bidirectional screw rod 6 is threadedly connected with a moving block 64, the outer wall on one side of the moving block 64 is rotatably connected with a rotating rod 62, the outer wall of the rotating rod 62 is fixedly connected with a limiting tooth 2 63, the inside of the adjusting shell 3 is fixedly connected with a limiting tooth 1 61 near the lower part of the limiting tooth 2 63, the outer wall of one end of the bidirectional screw rod 6 passes through the outer wall of the rotating adjusting shell 3 and is fixedly connected with a handle 65, the outer wall on one side of the moving block 64 is rotatably connected with a fixed seat, the outer wall on one side of the fixed seat is fixedly connected with a spray gun 7, the outer wall of the main shaft 41 is located on the outside of the anti-corrosion paint temporary storage box 2 and is fixedly connected with a gear 8, and one side of the anti-corrosion paint temporary storage box 2 The outer wall of the limit shell 83 is fixedly connected, and the inner part of the limit shell 83 is slidably connected with the mounting rod 81. The outer walls on both sides of the mounting rod 81 are fixedly connected with the tooth seat 82. The inner part of the limit shell 83 is fixedly connected with the limit assembly 84. The outer wall on one side of the limit assembly 84 is movably plugged into the inner part of the tooth seat 82. The outer wall of the top of the gear 8 is slidably connected with a slide groove 85. The inner part of the slide groove 85 is fixedly connected with a return spring 86. The outer wall of one end of the return spring 86 is fixedly connected with the outer wall of one side of the gear 8. The outer wall of the gear 8 is meshed with the outer wall tooth seat 82 on one side of the mounting rod 81. One side of the inner part of the limit shell 83 is fixedly connected with a magnetic block, and the magnetic block is attracted and slidably connected with the outer wall on one side of the mounting rod 81.

[0061] By pushing the adjusting shell 3 to tilt the angle, the spray gun 7 is driven to adjust the angle, so that the spray gun 7 can better spray the tube bundle. The angle of the spray gun 7 can be adjusted according to the specific shape of the tube bundle and the spraying requirements, making the spraying process more flexible and changeable. This flexibility helps to ensure that the paint can be evenly covered on the surface of the tube bundle and improve the spraying quality.

[0062] By adjusting the distance between the two spray guns 7, the spraying operation can be made more adaptable to pipe bundles of different widths or shapes. This flexibility helps to improve the spraying efficiency and reduce the time wasted due to frequent replacement of the spray guns 7 or adjustment of positions. When the distance between the two spray guns 7 is accurately adjusted, it ensures that the anti-corrosion paint sprayed by them at the same time forms a uniform coating on the surface of the pipe bundle, which helps to improve the adhesion, corrosion resistance and aesthetics of the coating.

[0063] Embodiment 4

[0064] On the basis of the third embodiment, a placement groove is provided inside the connecting ring 42, and the placement groove is rotatably connected to the limiting ring 53 inside. A storage groove is provided inside the limiting ring 53, and the inside of the storage groove is fixedly connected to a support rod 55, and the outer wall of the support rod 55 is rotatably connected to the limiting rod 56. The outer wall of the top of the limiting rod 56 is fixedly connected to an elastic block 57, and the outer wall of the top of the elastic block 57 is fixedly connected to the inside of the storage groove. A card slot 54 is provided on the outer wall of the fixing ring 48, and the outer wall of the limiting rod 56 is movably plugged into the inside of the elastic block 57. A track 5 is provided on the outer wall of one side of the connecting ring 42, and a push spring 51 is fixedly connected to the inside of the track 5, and the outer wall of one end of the push spring 51 is fixedly connected to a pull rod 52, the outer wall of the pull rod 52 is slidably connected to the inside of the track 5, and the outer wall of one end of the pull rod 52 is fixedly connected to the outer wall of one side of the limiting ring 53.

[0065] By pushing the support plate 44, the connecting ring 42 can be removed from the fixing ring 48, so that the filter screen 43 can be cleaned easily. The filter screen 43 is an important component to prevent impurities from entering the spraying system. Regular cleaning is essential to maintaining equipment hygiene and spraying quality. This design makes the cleaning of the filter screen 43 quick and easy, which helps to ensure the long-term stable operation of the equipment and the spraying effect.

[0066] In actual use, first, the anti-corrosion raw materials of the tube bundle are put into the anti-corrosion coating mixing box 1 and mixed, and then enter the anti-corrosion coating temporary storage box 2 through the pipeline. At this time, the motor 4 is started, and then through the movement of the motor 4, the main shaft 41 can drive the fixed ring 48 to rotate, and then the rotation of the fixed ring 48 is used to drive the filter screen 43 to rotate. The rotation of the filter screen 43 can make the anti-corrosion coating more evenly distributed on the filter screen 43 during the filtration process, avoiding local accumulation of the coating on the filter screen 43, and correspondingly improving the filtration efficiency. At the same time, the rotating filter screen 43 can also effectively prevent clogging and extend the service life of the filter screen 43. Through rotary filtration, large particles and lumps in the anti-corrosion coating can be more thoroughly removed, thereby improving the purity and quality of the coating and increasing the beauty of the outer wall of the tube bundle.

[0067] Through the cooperation of the support plate 44 and the crushing rod 47, the anti-corrosion paint can be crushed and stirred when it passes through the filter screen 43. The crushing rod 47 will physically crush the large particles or lumps in the anti-corrosion paint during the rotation process to make it refined. This not only helps the anti-corrosion paint to pass through the filter screen 43 more evenly, but also ensures the fineness and consistency of the final anti-corrosion paint, and improves the overall quality of the coating. The stirring effect of the crushing rod 47 is not limited to crushing particles, but also promotes the mixing of the various components in the paint. The anti-corrosion paint is stirred while passing through the filter screen 43, which helps to achieve uniform mixing of the anti-corrosion paint.

[0068] The anti-corrosion paint filtered through the filter screen 43 can be transferred to the spray gun 7 through the pipeline inside the support seat 31, and then sprayed onto the tube bundle through the spray gun 7.

[0069] The operator pushes the mounting rod 81 so that the mounting rod 81 and the magnetic block are attracted to each other, and the tooth seat 82 on one side of the mounting rod 81 and the limit assembly 84 can be released. At this time, the tooth seat 82 on the outer wall of the other side of the mounting rod 81 is meshed with the gear 8, and the mounting rod 81 is pushed upward by the rotation of the gear 8. The thrust generated by the upward movement of the mounting rod 81 can push the adjustment shell 3 to tilt the angle, thereby driving the spray gun 7 to adjust the angle, so that the spray gun 7 can better spray the tube bundle. The angle of the spray gun 7 can be adjusted according to the specific shape of the tube bundle and the spraying requirements, making the spraying process more flexible and changeable. This flexibility helps to ensure that the paint can evenly cover the surface of the tube bundle and improve the spraying quality.

[0070] After the adjustment of the spray gun 7 is completed, the operator can separate the mounting rod 81 from the magnetic block, and then use the action of the reset spring 86 to drive the mounting rod 81 to move to one side of the limit assembly 84, so that the limit assembly 84 is in contact and fixed with the tooth seat 82 on one side of the gear 8. The contact and fixation between the limit assembly 84 and the tooth seat 82 ensures that the spray gun 7 remains stable at the adjusted angle and will not move accidentally due to external factors, thereby ensuring the continuity and stability of the spraying operation. The operator only needs to simply separate the mounting rod 81 from the magnetic block, and the reset spring 86 will automatically complete the subsequent fixing work without the need for additional operation or adjustment. This automated design simplifies the operation process and improves work efficiency.

[0071] It should be noted that: by rotating the fixed base moving block 64 and gently rotating the spray gun 7, the angle of the spray gun 7 can be finely adjusted.

[0072] By turning the handle 65 and then moving the handle 65, the bidirectional screw rod 6 can drive the moving block 64 to move, so that the spray gun 7 can move accordingly, and the distance between the two spray guns 7 can be adjusted. When the movement of the bidirectional screw rod 6 is stopped, the moving block 64 can be fixed in place through the cooperation of the limit tooth 1 61 and the limit tooth 2 63. By adjusting the distance between the two spray guns 7, the spraying operation can be more adapted to pipe bundles of different widths or shapes. This flexibility helps to improve the spraying efficiency and reduce the time wasted due to frequent replacement of the spray gun 7 or adjustment of the position. When the distance between the two spray guns 7 is accurately adjusted, it is ensured that the anti-corrosion paint sprayed by them at the same time forms a uniform coating on the surface of the pipe bundle, which helps to improve the adhesion, corrosion resistance and aesthetics of the coating.

[0073] By tightly fitting the cleaning scraper 46 with the interior of the anti-corrosion paint temporary storage box 2, the anti-corrosion paint inside the anti-corrosion paint temporary storage box 2 can be scraped off when the mounting plate 45 drives the cleaning scraper 46 to rotate, thereby avoiding adding new paint before the previous paint is completely cleaned. The two paints will be mixed together, resulting in changes in the composition and performance of the paints. The scraping action of the cleaning scraper 46 ensures the cleanliness of the interior of the temporary storage box, and correspondingly prevents the mixing of different paints, thereby ensuring the purity and performance stability of the paints, and avoiding the mixed use of paints that will affect the quality of the spraying operation. Different paints may have different characteristics such as composition, viscosity, drying time, etc., which may cause uneven coating, poor adhesion, easy falling off, etc. after mixing. By scraping with the cleaning scraper 46, it can be ensured that pure paint is used for each spraying operation, thereby improving the spraying quality.

[0074] When the operator pulls the pull rod 52 to move inside the track 5, the movement of the pull rod 52 can drive the limit ring 53 to move, and then the movement of the limit ring 53 can drive the support rod 55 to move at the same time. When the support rod 55 moves out of the slot 54 and continues to move, the limit rod 56 is squeezed by the outer wall of the fixing ring 48, so that the limit rod 56 can squeeze the elastic block 57 into the interior of the storage slot. At this time, the support plate 44 is pushed to remove the connecting ring 42 from the fixing ring 48, so as to facilitate the cleaning of the filter 43. The whole disassembly process is designed to be intuitive and easy to operate, and even non-professionals can easily complete it. This convenience not only reduces the requirements for the operator's skills, but also reduces the risk of equipment damage caused by improper operation. The filter 43 is an important component to prevent impurities from entering the spraying system. Regular cleaning is essential to maintaining equipment hygiene and spraying quality. This design makes the cleaning of the filter 43 convenient and quick, which helps to ensure the long-term stable operation and spraying effect of the equipment.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coating device based on cold exchange equipment anti-corrosion, characterized in that: The anti-corrosion coating device for cold exchange equipment comprises: an anti-corrosion coating mixing box (1), the top outer wall of the anti-corrosion coating mixing box (1) is fixedly connected with mounting grooves on both sides, the interior of the mounting groove is slidably connected with fixing rods, the outer walls of one end of the two fixing rods are fixedly connected with an anti-corrosion coating temporary storage box (2), the top outer wall of the anti-corrosion coating temporary storage box (2) is fixedly connected with a support seat (31), the outer wall of one side of the support seat (31) is fixedly connected with an adjustment shell (3), and the outer wall of one side of the anti-corrosion coating temporary storage box (2) is fixedly connected with a motor (4).

2. The coating device based on cold exchange equipment anti-corrosion according to claim 1 is characterized in that: The output end of the motor (4) is fixedly connected to a main shaft (41), the outer wall of the main shaft (41) is fixedly connected to a fixing ring (48), the outer walls of the two fixing rings (48) are movably connected to connecting rings (42), a filter screen (43) is fixedly connected to the middle position of the outer wall of the connecting ring (42), the outer wall of the filter screen (43) is fixedly connected to a mounting plate (45), and the outer wall of the mounting plate (45) is rotatably connected to the inside of the anti-corrosion paint temporary storage box (2).

3. The coating device based on cold exchange equipment anti-corrosion according to claim 2 is characterized in that: The outer wall of the connecting ring (42) is fixedly connected to support plates (44) on both sides of the filter screen (43), and the outer walls of the opposite sides of the support plates (44) are fixedly connected to breaking rods (47). The outer wall of the mounting plate (45) is provided with a groove, and a cleaning scraper (46) is movably inserted into the interior of the groove. The outer wall of the cleaning scraper (46) is rotatably connected to the interior of the anti-corrosion paint temporary storage box (2).

4. The coating device based on cold exchange equipment anti-corrosion according to claim 2 is characterized in that: A placement groove is provided inside the connection ring (42), and a limiting ring (53) is rotatably connected inside the placement groove. A storage groove is provided inside the limiting ring (53), and a support rod (55) is fixedly connected inside the storage groove. The outer wall of the support rod (55) is rotatably connected to the limiting rod (56), and the outer wall of the top of the limiting rod (56) is fixedly connected to an elastic block (57). The outer wall of the top of the elastic block (57) is fixedly connected to the inside of the storage groove. A clamping groove (54) is provided on the outer wall of the fixing ring (48), and the outer wall of the limiting rod (56) is movably plugged into the inside of the elastic block (57).

5. The coating device based on cold exchange equipment anti-corrosion according to claim 2 is characterized in that: A track (5) is provided on the outer wall of one side of the connecting ring (42), a push spring (51) is fixedly connected to the inside of the track (5), a pull rod (52) is fixedly connected to the outer wall of one end of the push spring (51), the outer wall of the pull rod (52) is slidably connected to the inside of the track (5), and the outer wall of one end of the pull rod (52) is fixedly connected to the outer wall of one side of the limiting ring (53).

6. The coating device based on cold exchange equipment anti-corrosion according to claim 1 is characterized in that: The adjusting shell (3) is internally rotatably connected with a bidirectional screw rod (6), the outer wall of the bidirectional screw rod (6) is threadedly connected with a moving block (64), the outer wall of one side of the moving block (64) is rotatably connected with a rotating rod (62), the outer wall of the rotating rod (62) is fixedly connected with a second limiting tooth (63), the adjusting shell (3) is fixedly connected with a first limiting tooth (61) below the second limiting tooth (63), the outer wall of one end of the bidirectional screw rod (6) passes through the outer wall of the rotating adjusting shell (3) and is fixedly connected with a handle (65), the outer wall of one side of the moving block (64) is rotatably connected with a fixed seat, and the outer wall of one side of the fixed seat is fixedly connected with a spray gun (7).

7. The coating device based on cold exchange equipment anti-corrosion according to claim 2 is characterized in that: The outer wall of the main shaft (41) is located outside the anti-corrosion paint temporary storage box (2) and is fixedly connected to a gear (8); the outer wall on one side of the anti-corrosion paint temporary storage box (2) is fixedly connected to a limit shell (83); the interior of the limit shell (83) is slidably connected to a mounting rod (81); the outer walls on both sides of the mounting rod (81) are fixedly connected to a gear seat (82); the interior of the limit shell (83) is fixedly connected to a limit assembly (84); the outer wall on one side of the limit assembly (84) is movably plugged into the interior of the gear seat (82).

8. The coating device based on cold exchange equipment anti-corrosion according to claim 7 is characterized in that: The outer wall of the top of the gear (8) is slidably connected to a slide groove (85), the interior of the slide groove (85) is fixedly connected to a return spring (86), the outer wall of one end of the return spring (86) is fixedly connected to the outer wall of one side of the gear (8), the outer wall of the gear (8) is meshingly connected to the outer wall tooth seat (82) on one side of the mounting rod (81), and one side of the interior of the limit shell (83) is fixedly connected to a magnetic block, and the magnetic block and the outer wall of one side of the mounting rod (81) are slidably connected to each other.

9. A coating method for cold exchange equipment anti-corrosion is implemented by a coating device for cold exchange equipment anti-corrosion as described in any one of claims 1 to 8, and the coating method for cold exchange equipment anti-corrosion comprises the following steps: Step 1: Pre-treatment before painting: ① Use sandblasting to remove rust from the surface of the tube bundle to be coated. After the rust removal, there is no visible grease, dirt, scale, rust, old coating and other attachments on the surface of the tube bundle, and the original color of the metal is retained. The rust removal level reaches Sa2.5 level specified in GB / T 8923.1; ② Before sandblasting, the sealing surface of the tube bundle should be protected. Step 2: Coating method: Use the pouring coating method to coat TH-901 and SHY-99. Step 3: Paint mixing: ① Pour the divided paint and thinner into a clean paint mixing tank according to the specified proportion, stir and mix them evenly, cover the empty bucket and place it in the specified position; ② Adjust the viscosity of the coating according to the construction temperature. See the table below for the control viscosity (coating - 4 cups): ③ When painting, use a 100-200 mesh screen to filter out large particles and lumps. Step 4: Hoisting: Hoist the qualified surface treated pipe bundle onto the painting platform, with one end high and the other end low, and place it at a large tilt angle. If conditions permit, it is best to place the pipe bundle upright. Step 5: Filling: ① Carry out coating construction on the surface of the tube bundle within 4 hours after the tube bundle surface is sandblasted; ② Place the paint receiving tank at the bottom of the tube bundle, insert the paint pump nozzle into the upper tube mouth, turn on the paint pump to pour paint into each heat exchange tube, and stop pouring paint after the paint at the lower tube mouth flows steadily in a column for more than 5 seconds. Pour paint one tube at a time in sequence without missing any; ③ After the tube bundle is coated, it can be dried by natural ventilation or forced ventilation. The surface drying time should be determined according to factors such as the coating, tube bundle and temperature. The surface is qualified when the coating surface is not sticky and there are no fingerprints when you touch it with your finger. ④ When the paint on the lower pipe mouth is dripping and dry, use a brush to remove the dripping and falling of the lower pipe mouth in time; ⑤After the coating is dry, proceed to the next coating; ⑥ Starting from the second coating, the tilted tube bundle should be rotated 90° each time, and the lifting end should be replaced, and the next coating should be carried out from the other end until 6 coatings are completed; ⑦ For each coating, the leveling of the coating should be checked. If any dripping, wrinkling, bubbles, dripping, missing coating or pinholes are found, the cause should be analyzed and corresponding treatment measures should be taken to correct it; ⑧ If the coating is damaged, it can be polished with sandpaper and cleaned with a brush dipped in solvent before repairing; ⑨ No coating residue is allowed on the sealing surface of the tube bundle.

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