Fuel conduit internal maintenance device

Abstract

The application belongs to the field of industrial maintenance and repair, and particularly relates to a fuel pipeline internal maintenance device, which comprises a first cylinder, a second cylinder, an adjusting assembly and the like, the second cylinder has the same inner diameter as the first cylinder and is rotationally connected to the left end of the first cylinder, and the adjusting assembly is arranged inside the first cylinder. Through the cooperative work of the cleaning assembly and the paint spraying assembly, the deposits on the inner wall of the fuel pipeline can be cleaned first, and then the cleaned inner wall of the fuel pipeline can be repaired by paint spraying, so that the quality of the paint surface is ensured, and the problem of uneven paint surface or poor adhesion caused by directly spraying paint on the inner wall which is not cleaned is avoided. Furthermore, through the design of the collecting assembly, the deposits scraped off from the inner wall of the fuel pipeline can be efficiently collected, and the excess paint in the paint spraying repair process can be simultaneously collected, so that the device can not cause residues or secondary pollution when it is withdrawn from the fuel pipeline, and the safety, efficiency and environmental protection of the whole maintenance process are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of industrial maintenance and repair, and particularly relates to an internal maintenance device for fuel pipelines. BACKGROUND

[0002] Fuel pipelines refer to pipeline systems used for transporting various types of fuel. These pipelines are usually made of metal or special materials and are widely used in the oil and gas industry, transportation, industrial production, and military fields. Fuel may contain water, acidic substances, or other corrosive components, which can chemically react with the inner wall of the pipeline, causing the metal pipeline to gradually corrode. By spraying a paint surface on the inner wall of the fuel pipeline, a protective film can be formed on the metal surface, isolating the corrosive substances in the fuel from the metal, effectively preventing chemical and electrochemical corrosion. Therefore, it is crucial to regularly maintain the inner wall of the fuel pipeline.

[0003] Ordinary internal maintenance devices for fuel pipelines can only perform simple paint spraying. However, there are deposits on the inner wall of the fuel pipeline. Directly spraying paint on the surface without cleaning can result in uneven paint and poor adhesion. Moreover, after the paint spraying is completed, the excess paint cannot be collected, causing the device to flow during the process of withdrawing from the fuel pipeline, resulting in environmental pollution, dirty operating environment, and other problems.

[0004] Therefore, there is a particular need for an internal maintenance device for fuel pipelines to solve the above problems. SUMMARY

[0005] In order to overcome the shortcomings of ordinary internal maintenance devices for fuel pipelines, which can only perform simple paint spraying, cannot clean deposits, result in uneven paint and poor adhesion, and cannot collect excess paint, causing the device to flow during the process of withdrawing from the fuel pipeline, resulting in environmental pollution and a dirty operating environment, the present application provides an internal maintenance device for fuel pipelines.

[0006] The present application is realized by the following technical approach: the fuel pipeline internal maintenance device is characterized in that: it comprises a first cylinder 1, a second cylinder 2, an adjusting assembly, a connecting pipe 6, a sliding sleeve 7, a first pattern seat 9, a first telescopic rod 10, a first connecting block 101, a pulley 11, a second motor 12, a transmission belt assembly 13 and a paint spraying assembly; the second cylinder 2 has the same inner diameter as the first cylinder 1 and is rotationally connected to the left end of the first cylinder 1; the adjusting assembly is arranged inside the first cylinder 1, the connecting pipe 6 is rotationally connected to the center point position of the right part inside the first cylinder 1, the right end of the connecting pipe 6 penetrates through the right part of the first cylinder 1 and is located outside the first cylinder 1, the left end of the connecting pipe 6 is closed, the right end is open, the sliding sleeve 7 is slidingly connected to the outside of the connecting pipe 6, the two first pattern seats 9 are distributed left and right and are fixedly connected to the outside of the left and right ends of the sliding sleeve 7, the plurality of first connecting blocks 101 are distributed up and down and are fixedly connected to the upper and lower sides of the first cylinder 1, each first telescopic rod 10 is composed of a fixed sleeve and a sliding rod body and is arranged between the corresponding first pattern seat 9 and the corresponding first connecting block 101, wherein the fixed sleeve of the first telescopic rod 10 is rotationally connected with the corresponding first pattern seat 9, and the sliding rod body is rotationally connected with the corresponding first connecting block 101, each pulley 11 is rotationally connected to one end of each first telescopic rod 10 away from the first pattern seat 9, the plurality of second motors 12 are installed on the plurality of first telescopic rods 10 on the lower side, the transmission belt assembly 13 is arranged between the output shaft of the corresponding second motor 12 and the corresponding pulley 11 to form a closed-loop transmission system, and the paint spraying assembly is arranged inside the first cylinder 1; the cleaning assembly for cleaning the deposits is further arranged between the first cylinder 1 and the second cylinder 2; and the collecting assembly is further arranged at the lower part of the first cylinder 1.

[0007] Compared with the prior art, the present application has the following advantages: through the cooperative work of the cleaning assembly and the paint spraying assembly, the deposits on the inner wall of the fuel pipeline can be cleaned first, and then the cleaned inner wall of the fuel pipeline can be repaired by paint spraying, so that the quality of the paint surface is ensured, and the problem of uneven paint surface or poor adhesion caused by directly spraying paint on the inner wall which is not cleaned is avoided; through the design of the collecting assembly, the deposits scraped off from the inner wall of the fuel pipeline can be efficiently collected, and the excess paint in the paint spraying repair process can also be collected at the same time, so that the device will not cause residue or secondary pollution when it is withdrawn from the fuel pipeline, and the safety, efficiency and environmental protection of the entire maintenance process are improved; through the adjusting assembly, the positions of the pulley, the first scraper and the second scraper can be adjusted according to the inner diameter requirement of the fuel pipeline, so that the device can adapt to fuel pipelines with different inner diameters and the applicability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is a perspective structural schematic view of the present application.

[0009] Figure 2 It is a partial sectional view of the first cylinder and the second cylinder components of the present application.

[0010] Figure 3 is a partial sectional view of the first cylinder and second cylinder components of the present invention.

[0011] Figure 4 is a partial sectional view of the first telescopic rod component of the present invention.

[0012] Figure 5 is a partial sectional view of the second cylinder and sliding sleeve components of the present invention.

[0013] Figure 6 is a partial sectional view of the second telescopic rod and first scraper components of the present invention.

[0014] Figure 7 is a partial sectional view of the second telescopic rod component of the present invention.

[0015] Figure 8 is a partial sectional view of the first scraper component of the present invention.

[0016] Figure 9 is a partial sectional view of the first cylinder and second cylinder components of the present invention.

[0017] Figure 10 is a partial sectional view of the sliding sleeve and storage tray components of the present invention.

[0018] Figure 11 is a partial sectional view of the first cylinder and sliding carriage components of the present invention.

[0019] Figure 12 is a partial sectional view of the first cylinder and sliding carriage components of the present invention.

[0020] BRIEF DESCRIPTION OF DRAWINGS: 1. First cylinder, 2. Second cylinder, 3. First motor, 4. Connecting shaft, 5. First gear, 6. Connecting pipe, 61. Opening, 7. Sliding sleeve, 8. Rack, 9. First pattern seat, 10. First telescopic rod, 101. First connecting block, 11. Pulley, 12. Second motor, 13. Transmission belt assembly, 14. Rotating pipe, 15. Third motor, 16. Second gear, 17. Tooth block, 18. Second pattern seat, 19. Second telescopic rod, 20. Second connecting block, 21. First scraper, 22. Second scraper, 23. Air cylinder, 24. Torsional spring, 25. First spring, 26. Paint bucket, 27. First material pump, 28. First telescopic pipe, 29. Storage tray, 30. Spray head, 31. Reinforcing block, 32. Pressing plate, 33. Collection box, 331. Rotating cap, 34. Second material pump, 35. Second telescopic pipe, 36. First guide rod, 37. Sliding carriage, 371. Second guide rod, 372. Second spring, 38. Third spring, 39. Feeding frame, 40. Scraper. DETAILED DESCRIPTION

[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present application.

[0022] As shown in Figures 1-12 : the fuel pipeline internal maintenance device comprises a first cylinder 1, a second cylinder 2, an adjusting assembly, a connecting pipe 6, a sliding sleeve 7, a first pattern seat 9, a first telescopic rod 10, a first connecting block 101, a pulley 11, a second motor 12, a transmission belt assembly 13 and a paint spraying assembly. The second cylinder 2 has the same inner diameter as the first cylinder 1 and is rotationally connected to the left end of the first cylinder 1. The adjusting assembly is arranged inside the first cylinder 1. The connecting pipe 6 is rotationally connected to the center point position of the right part inside the first cylinder 1. The right end of the connecting pipe 6 penetrates the right part of the first cylinder 1 and is located outside the first cylinder 1. The left end of the connecting pipe 6 is closed, and the right end is open. The sliding sleeve 7 is slidingly connected to the outside of the connecting pipe 6. The two first pattern seats 9 are distributed left and right and are fixedly connected to the outside of the left and right ends of the sliding sleeve 7. The plurality of first connecting blocks 101 are distributed up and down and are fixedly connected to the upper and lower sides of the first cylinder 1. Each first telescopic rod 10 is composed of a fixed sleeve and a sliding rod body and is arranged between the corresponding first pattern seat 9 and the corresponding first connecting block 101. The fixed sleeve of the first telescopic rod 10 is rotationally connected to the corresponding first pattern seat 9, and the sliding rod body is rotationally connected to the corresponding first connecting block 101. Each pulley 11 is rotationally connected to one end of each first telescopic rod 10 away from the first pattern seat 9. The plurality of second motors 12 are installed on the plurality of first telescopic rods 10 on the lower side. The transmission belt assembly 13 is arranged between the output shaft of the corresponding second motor 12 and the corresponding pulley 11 to form a closed-loop transmission system. The paint spraying assembly is arranged inside the first cylinder 1. The cleaning assembly for cleaning the deposits is further arranged between the first cylinder 1 and the second cylinder 2. The collecting assembly is further arranged at the lower part of the first cylinder 1.

[0023] As shown in Figure 2 and Figure 11As shown, the adjusting assembly includes a first motor 3, a connecting shaft 4, a first gear 5 and a rack 8. The first motor 3 is connected to the inner wall of the upper rear side of the first cylinder 1 by bolts, and the output shaft faces forward. The connecting shaft 4 is connected to the output shaft of the first motor 3 by a shaft coupling, and the front end is rotationally connected to the inner wall of the upper front side of the first cylinder 1, providing a second fulcrum for the connecting shaft 4 and improving the stability of the connecting shaft 4 during rotation. The first gear 5 is connected to the outer middle end of the connecting shaft 4 by a key. The rack 8 is connected to the outer part of the sliding sleeve 7 by welding and is located below the first gear 5 and engaged with it. The thickness of the rack 8 is equal to that of the first gear 5, which can achieve uniform load distribution, reduce the risk of wear and damage, and help reduce vibration caused by unbalanced load, improving the stability of operation. Figure 9 and Figure 10 As shown, the paint spraying assembly includes a paint bucket 26, a first material pump 27, a first telescopic pipe 28, a storage tray 29, a spray head 30 and a reinforcing block 31. A plurality of openings 61 are distributed along the circumference and are provided on the right end of the connecting pipe 6. The inner diameter of the sliding sleeve 7 closely fits the outer diameter of the connecting pipe 6, and a sealing layer is provided at the inner diameter of the sliding sleeve 7, so that the subsequent paint can only enter the inside of the connecting pipe 6 through the openings 61. Two paint buckets 26 are symmetrically distributed and connected to the inner walls of the lower front and rear sides of the first cylinder 1 by bolts. Each first material pump 27 is connected to the right part of each paint bucket 26 by bolts. Each first telescopic pipe 28 is connected between each first material pump 27 and the sliding sleeve 7 by welding, and the discharge port is aligned with the corresponding opening 61. The storage tray 29 is connected to the right end of the connecting pipe 6 by welding and communicates with it. Eight spray heads 30 are distributed along the circumference and are connected to the storage tray 29 by welding, with their spray nozzles facing outward, and the included angle between every two spray heads 30 is 45 degrees. The reinforcing block 31 is connected to the center point of the outer right part of the first cylinder 1 by welding. The feed end of the storage tray 29 is rotationally connected to the reinforcing block 31, providing a second fulcrum for the storage tray 29 and improving the stability of the storage tray 29 during rotation.

[0024] As shown, Figure 3 , Figures 5-10As shown, the cleaning assembly comprises a rotating tube 14, a third motor 15, a second gear 16, tooth blocks 17, a second pattern seat 18, second extension rods 19, second connecting blocks 20, first scrapers 21, second scrapers 22, air cylinders 23, torsional springs 24 and first springs 25. The rotating tube 14 is connected to the left end of the connecting tube 6 by welding and rotationally connected to the left end of the sliding sleeve 7. The third motor 15 is connected to the left end of the sliding sleeve 7 by bolts, with the output shaft facing left. The second gear 16 is connected to the output shaft of the third motor 15 by key connection. The tooth blocks 17 are annularly distributed at equal intervals, connected to the outer middle part of the rotating tube 14 by welding and located above the second gear 16, capable of engaging with the second gear 16 in sequence. The second pattern seat 18 is connected to the left outer part of the rotating tube 14 by welding. The second connecting blocks 20 are distributed above and below, connected to the upper and lower sides of the second cylinder 2 by welding. Each second extension rod 19, which has the same structure as the first extension rod 10, is arranged between the corresponding second pattern seat 18 and the corresponding second connecting block 20. The fixed sleeve of the second extension rod 19 is rotationally connected to the corresponding second pattern seat 18, and the sliding rod body is rotationally connected to the corresponding second connecting block 20. Each first scraper 21 is rotationally connected to one end of each second extension rod 19 away from the second pattern seat 18. Each torsional spring 24 is sleeved on each first scraper 21, with both ends fixedly connected to the corresponding second extension rod 19 and the corresponding first scraper 21. The second scraper 22 is slidingly connected to the inside of the first scraper 21. A silica gel layer is arranged on the V-shaped surface of the side of the second scraper 22 away from the first scraper 21, which can provide excellent sealing and flexibility, ensuring close contact with the inner wall of the fuel pipeline during cleaning and effectively scraping off deposits. Each air cylinder 23 is connected to the inside of each first scraper 21 by bolts, with the extension rod facing down and fixedly connected to the corresponding second scraper 22. The air cylinder 23 is a floating air cylinder 23, allowing the extension rod to freely float within a certain range. When the second scraper 22 is pressed by the inner wall of the fuel pipeline and slides into the inside of the first scraper 21, the extension rod of the air cylinder 23 floats with the sliding of the second scraper 22. Every three first springs 25 are distributed along the curved shape of each first scraper 21 and connected to the corresponding first scraper 21 and the corresponding second scraper 22 by welding.

[0025] As Figure 11 and Figure 12As shown, the collection assembly includes a pressing plate 32, a collection box 33, a screw cap 331, a second material pump 34, a second telescopic pipe 35, a first guide rod 36, a sliding frame 37, a second guide rod 371, a second spring 372, a third spring 38, a feeding frame 39 and a scraping plate 40. The V-shaped pressing plate 32 is connected to the right end of the sliding sleeve 7 by welding, the collection box 33 is connected to the inner wall of the lower part of the first cylinder 1 by bolting, the discharge end of the collection box 33 penetrates the first cylinder 1 downward and is located outside the first cylinder 1, the screw cap 331 is threadedly connected to the discharge end of the collection box 33, the second material pump 34 is connected to the inner wall of the lower part of the first cylinder 1 by bolting and is located to the right of the collection box 33, the left discharge end of the second material pump 34 communicates with the collection box 33, the right air outlet end penetrates the first cylinder 1 and is located outside the first cylinder 1, the second material pump 34 with the air outlet end provides a direct air outlet channel for the second material pump 34, so that the air in the second material pump 34 can be discharged through the channel, avoiding the accumulation of air in the pump and affecting the normal work of the pump, ensuring the smooth delivery of the deposits and the normal operation of the system, the two first guide rods 36 are symmetrically distributed and are slidingly connected to the lower right part of the first cylinder 1, the sliding frame 37 is connected between the top ends of the two first guide rods 36 by welding and is located below the pressing plate 32 and abuts against the inclined surface of the pressing plate 32, each third spring 38 is sleeved outside each first guide rod 36 and is fixedly connected to the first cylinder 1 and the sliding frame 37 at both ends, the two second guide rods 371 are symmetrically distributed and are slidingly connected to the inner front and rear sides of the sliding frame 37, the lower ends of the second guide rods 371 penetrate the first cylinder 1 and are located outside the first cylinder 1, each second spring 372 is connected between each second guide rod 371 and the sliding frame 37 by welding, the feeding frame 39 is connected between the bottom ends of the two second guide rods 371 by welding and is located below the first cylinder 1, to the right of the first scraping plate 21 and the second scraping plate 22, the second telescopic pipe 35 is connected between the second material pump 34 and the feeding frame 39 by welding, the feeding end of the second telescopic pipe 35 communicates with the discharge end of the feeding frame 39, and the discharge end communicates with the feeding end of the second material pump 34, the two scraping plates 40 of the curved structure are symmetrically arranged in front of and behind the left part of the feeding frame 39 and are connected to the left part of the feeding frame 39 by welding, the curved design of the scraping plates 40 can better fit the inner wall of the fuel pipeline, ensuring that it covers most of the area of the lower inner wall of the fuel pipeline during cleaning and minimizing the cleaning dead angle; meanwhile, the curved surface of the scraping plate 40 can guide the deposits scraped off by the first scraping plate 21 and the second scraping plate 22 into the feeding frame 39, in addition, the scraping plate 40 is made of a suitable material, such as polyurethane, which is soft and elastic, can well adapt to the inner walls of fuel pipelines with different diameters and shapes, has excellent wear resistance and tear resistance, and can maintain its shape for a long time without being easily damaged.

[0026] When the inner wall of the fuel pipeline needs to be maintained, first of all, ensure that there is no medium flow in the fuel pipeline, then put the device at the inlet of the fuel pipeline, start the first motor 3, control the output shaft of the first motor 3 to rotate forward or reverse according to the inner diameter requirement of the fuel pipeline, when the output shaft rotates forward, the connecting shaft 4 rotates clockwise, the first gear 5 rotates clockwise with the connecting shaft 4, meshes with the rack 8 in the forward direction, drives the rack 8 to move the sliding sleeve 7 to the left, the first flower seat 9 moves to the left with the sliding sleeve 7, drives the first telescopic rod 10 to rotate around the corresponding first connecting block 101 as the axis, adjusts the position of the pulley 11, at the same time, the sliding sleeve 7 drives the rotating pipe 14 to move to the left, the second flower seat 18 moves to the left with the rotating pipe 14, drives the second telescopic rod 19 to rotate around the corresponding second connecting block 20 as the axis, adjusts the position of the first scraper 21 and the second scraper 22, in this process, the first telescopic rod 10 and the second telescopic rod 19 are appropriately stretched or contracted to avoid jamming; when the output shaft rotates reversely, the connecting shaft 4 rotates counterclockwise, the first gear 5 rotates counterclockwise with the connecting shaft 4, meshes with the rack 8 in the reverse direction, drives the rack 8 to move the sliding sleeve 7 to the right, the first flower seat 9 moves to the right with the sliding sleeve 7, reversely rotates the first telescopic rod 10 around the corresponding first connecting block 101 as the axis, adjusts the position of the pulley 11, the sliding sleeve 7 drives the rotating pipe 14 to move to the right, the second flower seat 18 moves to the right with the rotating pipe 14, reversely rotates the second telescopic rod 19 around the corresponding second connecting block 20 as the axis, adjusts the position of the first scraper 21 and the second scraper 22, in this process, the first telescopic rod 10 still appropriately stretches or contracts to avoid jamming; when the first telescopic rod 10 and the second telescopic rod 19 rotate clockwise or counterclockwise to the appropriate angle, adjust the pulley 11, the first scraper 21 and the second scraper 22 to the appropriate position, adapt to the inner diameter requirement of the fuel pipeline, immediately turn off the first motor 3;Subsequently, the device is pushed into the fuel pipeline, ensuring that the second cylinder 2 enters the fuel pipeline before the first cylinder 1, at this time, the pulley 11 contacts the inner wall of the fuel pipeline, and the first scraper 21 contacts the inner wall of the fuel pipeline and rotates to the appropriate angle along the inner diameter of the pipeline, and the torsional spring 24 is deformed, ensuring that the first scraper 21 and the second scraper 22 adhere to the inner wall of the fuel pipeline. Then, the second motor 12 and the third motor 15 are started, and when the second motor 12 operates, its output shaft drives the corresponding lower pulley 11 to rotate counterclockwise through the transmission belt assembly 13, thereby driving the device to advance in the fuel pipeline. When advancing, the upper pulley 11 rotates to contact the inner wall of the fuel pipeline, ensuring smooth progress of the device. During the advancing process, the advancing speed of the device can be adjusted by controlling the rotating speed of the output shaft of the second motor 12. When the third motor 15 operates, its output shaft drives the second gear 16 to rotate clockwise, continuously engaging with multiple tooth blocks 17, which in turn drive the rotating pipe 14 to rotate counterclockwise. The rotating pipe 14 drives the second telescopic rod 19 to rotate counterclockwise through the second pattern seat 18, and the second cylinder 2 rotates counterclockwise with the second telescopic rod 19. When the first scraper 21 rotates counterclockwise, it drives the second scraper 22 to scrape the deposits on the inner wall of the fuel pipeline. When scraping the deposits, the second scraper 22 can be squeezed and slid into the first scraper 21 along the circumferential direction of the inner wall of the fuel pipeline, and the first spring 25 is compressed. The second scraper 22 continuously adheres to the inner wall of the fuel pipeline under the action of the first spring 25, ensuring the scraping effect and avoiding jamming of the second scraper 22. When the first scraper 21 drives the second scraper 22 to rotate counterclockwise close to the lower inner wall of the fuel pipeline, the air cylinder 23 is immediately started, and its telescopic rod is extended to drive the second scraper 22 to completely slide into the first scraper 21, and the first spring 25 is completely compressed. When sliding in, the surface of the second scraper 22 tightly adheres to the inner wall of the first scraper 21, and the deposits accumulated on its surface are scraped off by the first scraper 21 and accumulated on the first scraper 21. The accumulated deposits have improved flowability and fall from the first scraper 21 to the lower part of the fuel pipeline. When the first scraper 21 continues to drive the second scraper 22 to rotate counterclockwise away from the lower inner wall of the fuel pipeline, the telescopic rod of the air cylinder 23 is immediately controlled to retract, driving the second scraper 22 to slide out of the first scraper 21, and the first spring 25 returns to its original state, thereby enabling the second scraper 22 to continue scraping the deposits on the inner wall of the fuel pipeline. Then, the first pump 27 is started to extract paint from the paint bucket 26 and send it into the first telescopic pipe 28. The paint in the first telescopic pipe 28 is discharged to the opening 61 and enters the connecting pipe 6 from the opening 61. The paint in the connecting pipe 6 eventually enters the storage tray 29 and is sprayed from the spray head 30 onto the cleaned inner wall of the fuel pipeline for paint surface repair. During the spraying process, the rotating pipe 14 drives the connecting pipe 6 to rotate counterclockwise, and the storage tray 29 rotates counterclockwise with the connecting pipe 6, enabling the spray head 30 to uniformly spray paint onto the inner wall of the fuel pipeline. Excess paint accumulates on the inner wall of the fuel pipeline and mixes with the deposits in the lower part of the fuel pipeline.When the repair of the paint surface on the inner wall of the fuel pipeline is completed, the third motor 15, the air cylinder 23, the first material pump 27 and the second material pump 34 are turned off, and the output shaft of the second motor 12 is reversed, which drives the corresponding lower pulley 11 to rotate clockwise through the transmission belt assembly 13, and then drives the device to exit from the fuel pipeline, the torsional spring 24 returns to its original shape, and the first scraper 21 is reversed and reset.

[0027] Initially, the carriage 37 is pressed by the pressing plate 32 and is in a downward moving state, and the second spring 372 and the third spring 38 are both in a compressed state. When the sliding sleeve 7 moves to the left, it drives the pressing plate 32 to move to the left, continues to press the carriage 37 to move downward, and the second spring 372 continues to be compressed. The first guide rod 36 moves downward together with the carriage 37, and continues to compress the third spring 38. At the same time, the first guide rod 36 drives the feeding frame 39 to move downward, so that the feeding frame 39 adjusts the position of the pulley 11, the first scraper 21 and the second scraper 22 accordingly, and ensures that the feeding frame 39 contacts the lower inner wall of the fuel pipeline when it enters the fuel pipeline. When the sliding sleeve 7 moves to the right, it drives the pressing plate 32 to move to the right and no longer presses the carriage 37. The second spring 372 and the third spring 38 return to their original state, which drives the first guide rod 36 and the carriage 37 to move upward. At the same time, the first guide rod 36 drives the feeding frame 39 to move upward, so that the feeding frame 39 adjusts the position of the pulley 11, the first scraper 21 and the second scraper 22 accordingly, and ensures that the feeding frame 39 contacts the lower inner wall of the fuel pipeline when it enters the fuel pipeline. When the device is walking in the fuel pipeline, the scraping plate 40 walks in the fuel pipeline together with the feeding frame 39, scrapes the deposits on the lower inner wall of the fuel pipeline, and at the same time, guides the oil paint-containing deposits accumulated in the lower part of the fuel pipeline into the feeding frame 39. When the oil paint-containing deposits enter the feeding frame 39, the second material pump 34 is started to pump the oil paint-containing deposits in the feeding frame 39 into the second telescopic pipe 35, and then sends the oil paint-containing deposits in the second telescopic pipe 35 into the collection box 33 for centralized collection. When the device exits from the fuel pipeline, the screw cap 331 is unscrewed to open the discharge end of the collection box 33, and the oil paint-containing deposits can be discharged.

[0028] It is worth noting that, in order to improve the convenience and safety of operation, all electrical components in the device (such as the first motor 3, the second motor 12, the third motor 15, the air cylinder 23, the first material pump 27 and the second material pump 34) can be integrated into a central control system. This system can automatically control the operation of each component through wireless remote control or pre-set program, reducing manual intervention, improving work efficiency, and installing various sensors (such as pressure sensors, temperature sensors, position sensors, etc.) on the device to monitor the working state of the device and the environmental parameters of the fuel pipeline in real time. These data can be transmitted to external monitoring equipment through wireless transmission, helping the operator to understand the operation of the device in time and make adjustments.

[0029] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalent features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for in-line maintenance of a fuel pipe, characterized in that: The utility model provides a paint spraying device, which comprises a first cylinder (1), a second cylinder (2), an adjusting assembly, a connecting pipe (6), a sliding sleeve (7), a first pattern seat (9), a first telescopic rod (10), a first connecting block (101), a pulley (11), a second motor (12), a transmission belt assembly (13) and a paint spraying assembly; the second cylinder (2) has the same inner diameter as the first cylinder (1) and is rotationally connected to the left end of the first cylinder (1); the adjusting assembly is arranged inside the first cylinder (1); the connecting pipe (6) is rotationally connected to the center point position of the right part inside the first cylinder (1), the right end of the connecting pipe (6) penetrates through the right part of the first cylinder (1) and is located outside the first cylinder (1), and the left end of the connecting pipe (6) is closed, and the right end is open; the sliding sleeve (7) is slidingly connected to the outside of the connecting pipe (6); the two first pattern seats (9) are distributed on the left and right sides of the sliding sleeve (7) and are fixedly connected to the outside of the left and right ends of the sliding sleeve (7); the plurality of first connecting blocks (101) are distributed on the upper and lower sides of the first cylinder (1) and are fixedly connected to the upper and lower sides of the first cylinder (1); each first telescopic rod (10) is composed of a fixed sleeve and a sliding rod body and is arranged between the corresponding first pattern seat (9) and the corresponding first connecting block (101); the fixed sleeve of the first telescopic rod (10) is rotationally connected to the corresponding first pattern seat (9), and the sliding rod body is rotationally connected to the corresponding first connecting block (101); each pulley (11) is rotationally connected to one end of each first telescopic rod (10) away from the first pattern seat (9); the plurality of second motors (12) are installed on the plurality of first telescopic rods (10) on the lower side; the transmission belt assembly (13) is arranged between the output shaft of the corresponding second motor (12) and the corresponding pulley (11) to form a closed-loop transmission system; and the paint spraying assembly is arranged inside the first cylinder (1); the cleaning assembly for cleaning the deposits is further arranged between the first cylinder (1) and the second cylinder (2); and the collecting assembly is further arranged at the lower part of the first cylinder (1).

2. An apparatus for in-line maintenance of a fuel pipe as defined in claim 1, characterized in that The adjusting assembly comprises a first motor (3), a connecting shaft (4), a first gear (5) and a rack (8); the first motor (3) is installed on the wall of the upper rear part inside the first cylinder (1) and has a forward output shaft; the connecting shaft (4) is fixedly connected to the output shaft of the first motor (3) through a shaft coupling and rotationally connected to the wall of the upper front part inside the first cylinder (1) at the front end; the first gear (5) is fixedly connected to the outer part of the middle end of the connecting shaft (4); the rack (8) is fixedly connected to the outside of the sliding sleeve (7) and located below the first gear (5) and engaged with the first gear (5); and the thickness of the rack (8) is equal to that of the first gear (5).

3. The apparatus for in-line maintenance of fuel piping as defined in claim 1 wherein: The paint spraying assembly comprises paint buckets (26), first material pumps (27), first telescopic pipes (28), storage trays (29) and spray heads (30), a plurality of openings (61) are circumferentially and evenly distributed on the right end of the connecting pipe (6), the inner diameter of the sliding sleeve (7) is tightly attached to the outer diameter of the connecting pipe (6), two paint buckets (26) are symmetrically distributed and installed on the front and rear sidewalls of the lower part of the first cylinder (1), each first material pump (27) is installed on the right part of each paint bucket (26), each first telescopic pipe (28) is fixedly connected between each first material pump (27) and the sliding sleeve (7), the discharge port of each first telescopic pipe (28) is aligned with the corresponding opening (61), the storage tray (29) is fixedly connected to the right end of the connecting pipe (6) and communicates with the right end of the connecting pipe (6), a plurality of spray heads (30) are circumferentially and evenly distributed and fixedly connected to the storage tray (29), the spray nozzles of the spray heads (30) face outward, and the included angle between every two spray heads (30) is 45 degrees.

4. The apparatus for in-line maintenance of fuel piping as defined in claim 1 wherein: The cleaning assembly comprises a rotating pipe (14), a third motor (15), a second gear (16), a tooth block (17), a second pattern seat (18), a second telescopic rod (19), a second connecting block (20), a first scraper (21), a second scraper (22), a pneumatic cylinder (23), a torsional spring (24) and a first spring (25), the rotating pipe (14) is fixedly connected to the left end of the connecting pipe (6) and is rotationally connected to the left end of the sliding sleeve (7), the third motor (15) is installed on the left end of the sliding sleeve (7), the output shaft of the third motor (15) faces left, the second gear (16) is fixedly connected to the output shaft of the third motor (15), a plurality of tooth blocks (17) are evenly distributed in a ring shape and are fixedly connected to the outer part of the middle end of the rotating pipe (14) and are located above the second gear (16) and can be sequentially meshed with the second gear (16), the second pattern seat (18) is fixedly connected to the left end of the rotating pipe (14), a plurality of second connecting blocks (20) are distributed above and below and are fixedly connected to the upper and lower sides of the second cylinder (2), each second telescopic rod (19) which is the same in structure as the first telescopic rod (10) is arranged between the corresponding second pattern seat (18) and the corresponding second connecting block (20), wherein the fixing sleeve of the second telescopic rod (19) is rotationally connected to the corresponding second pattern seat (18), and the sliding rod body is rotationally connected to the corresponding second connecting block (20), each first scraper (21) is rotationally connected to one end of each second telescopic rod (19) away from the second pattern seat (18), each torsional spring (24) is sleeved on each first scraper (21), and the two ends of each torsional spring (24) are fixedly connected to the corresponding second telescopic rod (19) and the corresponding first scraper (21), respectively, the second scraper (22) is slidingly connected to the inside of the first scraper (21), each pneumatic cylinder (23) is installed in the inside of each first scraper (21), the telescopic rod of each pneumatic cylinder (23) faces downward and is fixedly connected to the corresponding second scraper (22), and the pneumatic cylinder (23) is a floating pneumatic cylinder (23), and every three first springs (25) are distributed along the curved shape of each first scraper (21) and are fixedly connected between the corresponding first scraper (21) and the corresponding second scraper (22).

5. The apparatus of claim 1, wherein: The collecting assembly comprises a pressing plate (32), a collecting box (33), a screw cap (331), a second material pump (34), a second telescopic pipe (35), a first guide rod (36), a sliding frame (37), a second guide rod (371), a second spring (372), a third spring (38) and a feeding frame (39), the V-shaped pressing plate (32) is fixedly connected to the outer right end of the sliding sleeve (7), the collecting box (33) is arranged on the inner wall of the lower part of the first cylinder (1) and extends downward through the first cylinder (1) and is located outside the first cylinder (1), the screw cap (331) is threadedly connected to the discharging end of the collecting box (33), the second material pump (34) is arranged on the inner wall of the lower part of the first cylinder (1) and is located to the right of the collecting box (33), the left discharging end of the second material pump (34) is communicated with the collecting box (33), the right gas outlet end of the second material pump (34) extends through the first cylinder (1) and is located outside the first cylinder (1), the two first guide rods (36) are symmetrically arranged and are slidably connected to the lower right part of the first cylinder (1), the sliding frame (37) is fixedly connected between the top ends of the two first guide rods (36) and is located below the pressing plate (32) and abuts against the inclined surface of the pressing plate (32), each third spring (38) is sleeved outside each first guide rod (36) and is fixedly connected between the first cylinder (1) and the sliding frame (37), the two second guide rods (371) are symmetrically arranged and are slidably connected to the inner front and back sides of the sliding frame (37), the lower ends of the second guide rods (371) extend through the first cylinder (1) and are located outside the first cylinder (1), each second spring (372) is fixedly connected between each second guide rod (371) and the sliding frame (37), the feeding frame (39) is fixedly connected between the bottom ends of the two second guide rods (371) and is located below the first cylinder (1), to the right of the first scraper (21) and the second scraper (22), the second telescopic pipe (35) is fixedly connected between the second material pump (34) and the feeding frame (39), the feeding end of the second telescopic pipe (35) is communicated with the discharging end of the feeding frame (39), and the discharging end of the second telescopic pipe (35) is communicated with the feeding end of the second material pump (34).

6. The apparatus of claim 3, wherein: The reinforcing block (31) is fixedly connected to the center point of the outer right part of the first cylinder (1), and the feeding end of the storage disc (29) is rotatably connected to the reinforcing block (31).

7. The apparatus of claim 5, wherein: The scraping plates (40) are symmetrically arranged in front of and behind the feeding frame (39).

8. The apparatus of claim 1, wherein: A strip-shaped groove is arranged on the rolling surface of the pulley (11).

9. The apparatus of claim 4, wherein: A silica gel layer is arranged on the V-shaped surface of the second scraper (22) away from the first scraper (21).

Images