Sewage pipeline preservative spraying device and method

Abstract

The invention discloses a sewage pipeline preservative spraying device and method, and relates to the technical field of sewage pipeline production. The device comprises a bottom plate, the bottom plate is horizontally and transversely placed, inverted-U-shaped supporting seats are fixedly arranged at the two ends of the upper surface of the bottom plate, vertical plates are vertically installed on the upper surfaces of the supporting seats, and stopping devices are installed at the top ends of the opposite sides of the two vertical plates. A placement roller is fixedly mounted at the end, adjacent to the two supporting seats, of the upper surface of the bottom plate, a mounting cover is fixedly arranged on the side wall of the bottom plate, and two transmission rollers are rotationally arranged at the two ends of the interior of the mounting cover; according to the sewage pipe anti-corrosion paint spraying device, when anti-corrosion paint is sprayed to a sewage pipe, a driving motor can drive a nozzle to horizontally move and also drive a mounting pipe to drive the sewage pipe to rotate, so that the spraying comprehensiveness of the sewage pipe is guaranteed, meanwhile, manual operation of workers is not needed, the workload of the workers is reduced, and meanwhile the spraying efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage pipe production, and in particular to a sewage pipe preservative spraying device and method. Background Art

[0002] Urban underground engineering pipelines refer to various power pipelines, telecommunication pipelines, cable TV pipelines, gas pipelines, heating pipelines, water supply pipelines, internal water pipelines, sewage pipelines, etc. buried underground in urban areas. They are an important part of urban infrastructure. Like the meridians of the human body, they constitute the city's nerve and circulatory system, responsible for the transportation of various energy sources, the transmission of various information, and the discharge of various wastes day and night. Therefore, before laying the pipeline, it is usually necessary to use a pipeline anti-corrosion processing device to brush a layer of anti-corrosion paint on the pipeline to increase the pipeline's anti-corrosion performance and extend the life of the pipeline; Now when spraying anti-corrosion paint on sewage pipes, most of the workers still hold the nozzle and spray paint along the sewage pipe. This operation can effectively maintain the uniformity of the surface of the sewage pipe when spraying paint. However, the length of the pipe is relatively long now. When working for a long time, the labor intensity of the workers is relatively high, the working time is often longer, and the overall production efficiency is reduced.

[0003] In view of the above problems, the inventors proposed a sewage pipe preservative spraying device and method for solving the above problems. Summary of the invention

[0004] In order to solve the above-mentioned problems, the purpose of the present invention is to provide a sewage pipe preservative spraying device and method.

[0005] In order to solve the above technical problems, the present invention adopts the following technical scheme: a sewage pipe preservative spraying device, comprising a base plate, the base plate is horizontally arranged, and support seats in an inverted U shape are fixedly arranged at both ends of the upper surface of the base plate, and vertically arranged upright plates are installed on the upper surface of the support seats, and stopping devices are installed at the top ends of the two upright plates facing each other, and a placing roller is fixedly installed at one end of the upper surface of the base plate located adjacent to the two support seats, and a mounting cover is fixedly arranged at the side wall of the base plate, and two transmission rollers are rotatably arranged at both ends of the interior of the mounting cover, and a conveyor belt is arranged on the transmission sleeve between the two transmission rollers, and a connecting plate is fixedly arranged at the upper end of the conveyor belt, and a vertical column is fixedly arranged on the upper surface of the connecting plate, and a rotating column is installed at the top of the column, and two symmetrically distributed nozzles are installed on the rotating column.

[0006] The stopping device includes a mounting tube, the interior of the mounting tube is rotatably provided with a screw rod with opposite threads at both ends, the threads at both ends of the screw rod are provided with movable columns, the outside of the mounting tube is provided with a ring-shaped support plate, the support plate is arranged in an arc shape, the outside of the mounting tube is penetrated by a movable groove, the movable column and the support plate are hingedly provided with a push rod, the push rod can pass through the movable groove, the screw rods in the two mounting tubes are fixed with a first rotating shaft at one end close to the vertical plate and the first rotating shaft passes through the vertical plate, and the first rotating shaft is fixed with a rotating wheel at one end away from the screw rod.

[0007] The top of described sliding panel also is provided with an interlocking structure, and the interlocking structure of described sliding panel and the interlocking structure is fixed with a toothed structure that is cooperatively connected with each other, and the interlocking structure of described sliding panel and the interlocking structure is hinged on the base plate, and the two ends of described sliding panel and the interlocking structure are hinged on the base plate, and the two ends of described sliding panel and the interlocking structure are hinged on the base plate.

[0008] A second tooth plate is fixedly provided at one end of the interior of the mounting cover away from the base plate, a connecting rod is rotatably provided in the column, and two first bevel gears meshing with each other are passed between the upper end of the connecting rod and the driving shaft, and the bottom of the connecting rod passes through the column and is fixedly provided with a second gear meshing with the second gear.

[0009] A driving motor is fixedly mounted on one side of the mounting cover, and an output end of the driving motor is coaxially fixedly arranged on an adjacent transmission roller.

[0010] A pinion is fixedly provided at one end of the mounting tube close to the vertical plate, and a second rotating shaft is rotatably provided on the vertical plate located below the mounting tube, and a large gear meshing with the pinion is fixedly provided on the end of the second rotating shaft; a first transmission shaft is rotatably provided at the bottom of the support seat, a second belt is provided between one end of the first transmission shaft and a transmission roller close to the driving motor, the second belt is connected to the first transmission shaft and the transmission roller through a pulley, the end of the first transmission shaft away from the first belt is connected to a second transmission shaft through two meshing second bevel gears, a second belt is provided between the second transmission shaft and the second rotating shaft, and the second belt is specifically connected to the second transmission shaft and the second rotating shaft through a pulley.

[0011] A spraying method of a sewage pipe preservative spraying device comprises the following steps: S1. Place the two ends of the sewage pipe that needs to be painted with anti-corrosion paint on two placement rollers, insert the two ends into two installation pipes respectively, and fix the two ends of the sewage pipe by opening the plate; S2, at this time, the driving motor is started, and the driving motor drives the column to move through the conveyor belt. At the same time, the installed installation pipe will rotate with the transmission of the driving motor, thereby driving the positioned sewage pipe to rotate; S3. When the nozzle moves with the column, the rotating column will swing back and forth, and the nozzle will fully spray paint on the sewage pipe.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, when spraying anti-corrosion paint on the sewage pipe, the driving motor can drive the nozzle to move horizontally, and also drive the installation pipe to drive the sewage pipe to rotate, thereby ensuring the comprehensiveness of the sewage pipe spraying, and at the same time, no manual operation is required by the staff, reducing the workload of the staff and improving the efficiency of spraying; 2. In the present invention, when the column moves, the second tooth plate, the second gear, the connecting rod and the driving shaft and other structures can make the rotating plate drive the rotating column fixed on the top and the nozzle on the rotating column to swing back and forth, so that the paint nozzle can ensure the swing spraying of the simulated staff when holding it, so as to ensure the uniformity of the paint spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the front structural view of the vertical plate of the present invention.

[0016] Figure 3 It is a schematic side view of the structure of the present invention.

[0017] Figure 4 This is a schematic diagram of the structural installation pipe of the present invention.

[0018] Figure 5 This is a schematic diagram of the cover column structure of the present invention.

[0019] Figure 6 It is a schematic diagram of the column structure of the present invention.

[0020] Figure 7 This is a schematic diagram of the first rotating rod structure of the present invention.

[0021] Figure 8 For the present invention Figure 7 Enlarged structural diagram at A in the middle.

[0022] In the figure: 1, bottom plate; 11, placement roller; 12, support seat; 13, vertical plate; 14, mounting tube; 15, screw rod; 151, first rotating shaft; 152, rotating wheel; 16, moving column; 17, opening plate; 18, movable groove; 19, top rod; 2, small gear; 21, large gear; 22, second rotating shaft; 3, mounting cover; 31, transmission roller; 32, conveyor belt; 33, driving motor; 34, connecting plate; 35, column; 36, rotating column ; 37. rotating plate; 38. nozzle; 39. rotating rod; 4. groove; 41. first gear; 42. first tooth plate; 43. movable plate; 44. slide groove; 45. push rod; 46. swing plate; 47. driving shaft; 48. cross bar; 5. connecting rod; 51. first bevel gear; 52. second gear; 53. second tooth plate; 6. first transmission shaft; 61. first belt; 62. second transmission shaft; 63. second bevel gear; 64. second belt. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0024] like Figure 1-8 As shown, the present invention provides a sewage pipe preservative spraying device, including a base plate 1, which is horizontally placed, and two ends of the upper surface of the base plate 1 are fixedly provided with support seats 12 in an inverted U shape, and the upper surface of the support seat 12 is installed with a vertically arranged upright plate 13, and the top ends of the two upright plates 13 facing each other are installed with a stopping device, and a placing roller 11 is fixedly installed at one end of the upper surface of the base plate 1 located adjacent to the two support seats 12, and a mounting cover 3 is fixedly provided at the side wall of the base plate 1, and two transmission rollers 31 are rotatably provided at both ends of the interior of the mounting cover 3, and a transmission sleeve is provided with a conveyor belt 32 between the two transmission rollers 31, and a connecting plate 34 is fixedly provided at the upper end of the conveyor belt 32, and a vertically arranged column 35 is fixedly provided on the upper surface of the connecting plate 34, and a rotating column 36 is installed at the top of the column 35, and two symmetrically distributed nozzles 38 are installed on the rotating column 36.

[0025] The stopping device includes a mounting tube 14, the interior of which is rotatably provided with a screw rod 15 having opposite threads at both ends, and threads at both ends of the screw rod 15 are provided with movable columns 16, the outside of the mounting tube 14 is provided with a ring-shaped expansion plate 17, and the expansion plate 17 is arranged in an arc shape. A movable groove 18 is penetrated through the outside of the mounting tube 14, and a push rod 19 is hingedly provided between the movable column 16 and the expansion plate 17, and the push rod 19 can penetrate the movable groove 18. A first rotating shaft 151 is fixedly provided at one end of the screw rod 15 in the two mounting tubes 14 close to the vertical plate 13, and the first rotating shaft 151 penetrates the vertical plate 13, and a rotating wheel 152 is fixedly provided at one end of the first rotating shaft 151 away from the screw rod 15.

[0026] By adopting the above technical solution, the screw rod 15 will drive the movable columns 16 with threads at both ends to move toward each other, and the top rod 19 hinged between the movable column 16 and the support plate 17 will gradually move from an inclined setting to a vertical setting. At this time, the annularly distributed support plate 17 will gradually move away from the mounting tube 14, so that the support plate 17 will abut against the inner wall of the sewage pipe, thereby fixing the sewage pipe and facilitating adaptation to sewage pipes of different diameters.

[0027] A rotating plate 37 is fixedly provided at the bottom of the rotating column 36 , and the bottom of the rotating plate 37 is rotatably arranged on the top of the column 35 . A vertically arranged first rotating rod 39 is fixedly provided at the center of the lower surface of the rotating plate 37 , and a driving assembly is provided at the bottom of the first rotating rod 39 .

[0028] By adopting the above technical solution, the rotating plate 37 can ensure that the rotating column 36 at the top rotates stably, thereby ensuring that the nozzle 38 rotates stably.

[0029] The driving assembly includes a groove 4, which is opened at the upper end of the column 35. The bottom of the first rotating rod 39 is rotatably set in the groove 4. A first gear 41 is fixedly provided on the first rotating rod 39. A horizontally arranged first tooth plate 42 is meshed with the first gear 41 on the side away from the bottom plate 1. Both ends of the first tooth plate 42 are movably inserted in the column 35. A vertically arranged movable plate 43 is fixedly provided on the side of the first tooth plate 42 away from the first gear 41. A slide groove 44 is penetrated at the upper and lower ends of the movable plate 43. A push rod 45 is slidably provided in the slide groove 44. A swing plate 46 is fixedly provided at one end of the push rod 45 away from the first tooth plate 42. A driving shaft 47 is fixedly provided at one end of the swing plate 46 away from the push rod 45.

[0030] By adopting the above technical solution, the drive shaft 47 is set to cooperate with the swing plate 46 and the push rod 45 to drive the movable plate 43 to drive the first tooth plate 42 to move back and forth continuously. The first tooth plate 42 will drive the first gear 41 meshing with it to rotate back and forth continuously. At the same time, the first gear 41 will drive the rotating rod 39 fixed thereto to drive the rotating plate 37 on the top to rotate back and forth. The rotating plate 37 will drive the rotating column 36 fixed on the top and the nozzle 38 on the rotating column 36 to swing back and forth, so that the paint nozzle 38 can ensure the swing painting when simulated by the staff holding it, so as to ensure the uniformity of the paint spraying.

[0031] A second tooth plate 53 is fixedly provided at one end of the interior of the mounting cover 3 away from the base plate 1, and a connecting rod 5 is rotatably provided in the column 35. Two first bevel gears 51 meshing with the upper end of the connecting rod 5 are passed between the driving shaft 47, and the bottom of the connecting rod 5 passes through the column 35 and is fixed with a second gear 52 meshing with the second gear 52.

[0032] By adopting the above technical solution, when the column 35 moves, the second toothed plate 53, the second gear 52 and the first bevel gear 51 can drive the driving shaft 47 to rotate, thereby increasing the linkage of the device.

[0033] A cross bar 48 is movably inserted between the upper and lower ends of the movable plate 43 , and both ends of the cross bar 48 are fixedly arranged on the inner wall of the groove 4 .

[0034] By adopting the above technical solution, the provided crossbar 48 can ensure that the movable plate 43 can move back and forth stably.

[0035] A driving motor 33 is fixedly mounted on one side of the mounting cover 3 , and an output end of the driving motor 33 is coaxially fixedly disposed on an adjacent transmission roller 31 .

[0036] By adopting the above technical solution, the provided driving motor 33 can provide power for the operation of the device, making it convenient for the staff to operate it.

[0037] A pinion 2 is fixedly disposed at one end of the mounting tube 14 close to the vertical plate 13 . The vertical plate 13 is located below the mounting tube 14 and is rotatably provided with a second shaft 22 . A large gear 21 meshing with the pinion 2 is fixedly disposed at the end of the second shaft 22 .

[0038] By adopting the above technical solution, the driven rotation speed of the small gear 2 will be much greater than that of the large gear 21, so that the small gear 2 will drive the mounting pipe 14 to make the sewage pipe rotate faster, thereby ensuring the integrity of the paint spraying on the surface of the sewage pipe itself.

[0039] A first transmission shaft 6 is rotatably provided at the bottom of the support seat 12, and a second belt 64 is provided between one end of the first transmission shaft 6 and the transmission roller 31 close to the driving motor 33, and the second belt 64 is connected to the first transmission shaft 6 and the transmission roller 31 through a pulley. The end of the first transmission shaft 6 away from the first belt 61 is connected to a second transmission shaft 62 through two meshing second bevel gears 63, and a second belt 64 is provided between the second transmission shaft 62 and the second rotating shaft 22. The second belt 64 is specifically connected to the second transmission shaft 62 and the second rotating shaft 22 through a pulley.

[0040] By adopting the above technical solution, the driving roller 31 and the mounting tube 14 can be rotated synchronously, so that the linkage of the device is increased and the convenience of operation is improved.

[0041] A spraying method of a sewage pipe preservative spraying device comprises the following steps: S1. Place the two ends of the sewage pipe to be painted with anti-corrosion paint on two placement rollers 11, insert the two ends into two mounting tubes 14 respectively, and fix the two ends of the sewage pipe by opening the plate 17; S2, at this time, the driving motor 33 is started, and the driving motor 33 drives the column 35 to move through the conveyor belt 32, and at the same time, the installed installation pipe 14 will rotate with the transmission of the driving motor 33, thereby driving the positioned sewage pipe to rotate; S3. When the nozzle 38 moves with the column 35, the rotating column 36 will swing back and forth, and the nozzle 38 will fully spray paint on the sewage pipe.

[0042] Working principle: When in use, insert the two ends of the sewage pipe to be sprayed with anti-corrosion paint into the two installation tubes 14 respectively, and then the staff can drive the first rotating shaft 151 to rotate through the rotating wheel 152. At this time, the first rotating shaft 151 will drive the screw rod 15 to rotate, and the moving columns 16 set on the threads at both ends will move towards each other at the same time. At this time, with the movement of the moving column 16, the top rod 19 hinged between the moving column 16 and the support plate 17 will gradually move from the inclined setting to the vertical setting. At this time, the annularly distributed support plate 17 will gradually move away from the installation tube 14, so that the support plate 17 will be against the inner wall of the sewage pipe, and the sewage pipe is fixed; Then the staff can start the driving motor 33, and the driving motor 33 will drive the conveyor belt 32 to work through the transmission roller 31, and the conveyor belt 32 will drive the vertically arranged column 35 to work through the connecting plate 34. At this time, the two nozzles 38 located at the top of the column 35 will move along the bottom plate 1, so that both ends of the sewage pipe can be painted. When the connecting plate 34 and the column 35 move, the second gear 52 fixed at the bottom of the connecting rod 5 is engaged with the second tooth plate 53, so that as the connecting plate 34 moves, the second gear 52 will be driven by the second tooth plate 53 to drive the connecting rod 5 to rotate, and the two meshing first bevel gears 51 will drive the driving shaft 47 to drive the swing plate 46 to rotate, and the swing plate 46 will drive the push rod 45 to rotate, and the push rod 45 will The movable plate 43 is pushed to move. When the swing plate 46 is driven, the push rod 45 is driven to rotate continuously. At this time, the push rod 45 moves one end of the slide groove 44 to the other end. In this way, one end of the push rod 45 is continuously moved to the other end. At this time, the movable plate 43 is pushed to repeatedly move in the groove 4, so that the first tooth plate 42 fixed to the movable plate 43 moves back and forth. The first tooth plate 42 drives the first gear 41 meshed with it to rotate back and forth continuously. At the same time, the first gear 41 drives the rotating rod 39 fixed thereto to drive the rotating plate 37 on the top to rotate back and forth. The rotating plate 37 drives the rotating column 36 fixed on the top and the nozzle 38 on the rotating column 36 to swing back and forth, so that the nozzle 38 of the paint spraying can ensure the swing spraying of the simulated staff when holding it, so as to ensure the uniformity of the paint spraying. At the same time, when the driving motor 33 drives the transmission roller 31 to rotate, the first belt 61 can drive the first transmission shaft 6 to rotate. At this time, the first transmission shaft 6 drives the second rotating shaft 22 to rotate through the meshing second bevel gear 63, the second transmission shaft 62 and the second belt 64, so that the second rotating shaft 22 drives the large gear 21 to drive the meshing small gear 2 to rotate. At this time, the driven speed of the small gear 2 will be much greater than the large gear 21, so that the small gear 2 will drive the mounting pipe 14 to rotate, thereby driving the fixed sewage pipe to rotate. At this time, the rotating sewage pipe can allow other positions on itself to be sprayed with anti-corrosion paint by the nozzle 38, thereby increasing operating efficiency.

[0043] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A sewage pipe preservative spraying device, comprising a bottom plate (1), characterized in that: The bottom plate (1) is arranged horizontally and transversely, and support seats (12) arranged in an inverted U shape are fixedly provided at both ends of the upper surface of the bottom plate (1), and vertical upright plates (13) are installed on the upper surface of the support seats (12). Stop devices are installed at the top ends of the two upright plates (13) facing each other. A placing roller (11) is fixedly installed at one end of the upper surface of the bottom plate (1) adjacent to the two support seats (12). A mounting cover (3) is fixedly provided at the side wall of the bottom plate (1), and two transmission rollers (31) are rotatably provided at both ends of the inside of the mounting cover (3). A transmission sleeve is provided between the two transmission rollers (31). A connecting plate (34) is fixedly provided at the upper end of the transmission belt (32). A vertical upright column (35) is fixedly provided on the upper surface of the connecting plate (34), and a rotating column (36) is installed at the top end of the upright column (35). Two symmetrically distributed nozzles (38) are installed on the rotating column (36).

2. A sewage pipe preservative spraying device as claimed in claim 1, characterized in that: The stop device comprises a mounting tube (14), a screw rod (15) having opposite threads at both ends being rotatably provided inside the mounting tube (14), movable columns (16) being threaded at both ends of the screw rod (15), an annularly distributed support plate (17) being provided outside the mounting tube (14), the support plate (17) being arranged in an arc shape, a movable groove (18) being penetrated through the outside of the mounting tube (14), a push rod (19) being hingedly provided between the movable column (16) and the support plate (17), the push rod (19) being capable of penetrating the movable groove (18), a first rotating shaft (151) being fixedly provided at one end of the screw rod (15) in the two mounting tubes (14) close to the vertical plate (13), and the first rotating shaft (151) penetrating the vertical plate (13), and a rotating wheel (152) being fixedly provided at one end of the first rotating shaft (151) away from the screw rod (15).

3. A sewage pipe preservative spraying device as claimed in claim 1, characterized in that: A rotating plate (37) is fixedly provided at the bottom of the rotating column (36), and the bottom of the rotating plate (37) is rotatably arranged on the top of the column (35). A vertically arranged first rotating rod (39) is fixedly provided at the center of the lower surface of the rotating plate (37), and a driving assembly is provided at the bottom of the first rotating rod (39).

4. A sewage pipe preservative spraying device as claimed in claim 3, characterized in that: The driving assembly comprises a groove (4), wherein the groove (4) is provided at the upper end of the column (35), the bottom of the first rotating rod (39) is rotatably arranged in the groove (4), a first gear (41) is fixedly arranged on the first rotating rod (39), a first gear (41) is meshed with a horizontally arranged first tooth plate (42) on the side of the first gear (41) away from the bottom plate (1), both ends of the first tooth plate (42) are movably inserted in the column (35), a vertically arranged movable plate (43) is fixedly arranged on the side of the first tooth plate (42) away from the first gear (41), a slide groove (44) is penetrated through the upper and lower ends of the movable plate (43), a push rod (45) is slidably arranged in the slide groove (44), a swing plate (46) is fixedly arranged on the end of the push rod (45) away from the first tooth plate (42), and a driving shaft (47) is fixedly arranged on the end of the swing plate (46) away from the push rod (45).

5. A sewage pipe preservative spraying device as claimed in claim 4, characterized in that: A second toothed plate (53) is fixedly provided at one end of the interior of the mounting cover (3) away from the bottom plate (1); a connecting rod (5) is rotatably provided in the column (35); two first bevel gears (51) are meshed between the upper end of the connecting rod (5) and the drive shaft (47); and a second gear (52) meshed with the second gear (52) is fixedly provided at the bottom of the connecting rod (5) which passes through the column (35).

6. A sewage pipe preservative spraying device as claimed in claim 4, characterized in that: A cross bar (48) is movably inserted between the upper and lower ends of the movable plate (43), and both ends of the cross bar (48) are fixedly arranged on the inner wall of the groove (4).

7. A sewage pipe preservative spraying device as claimed in claim 1, characterized in that: A drive motor (33) is fixedly mounted on one side of the mounting cover (3), and an output end of the drive motor (33) is coaxially fixedly disposed on an adjacent transmission roller (31).

8. A sewage pipe preservative spraying device as claimed in claim 1, characterized in that: A pinion gear (2) is fixedly provided at one end of the mounting tube (14) close to the vertical plate (13); a second rotating shaft (22) is rotatably provided on the vertical plate (13) located below the mounting tube (14); a large gear (21) meshing with the pinion gear (2) is fixedly provided at the end of the second rotating shaft (22).

9. A sewage pipe preservative spraying device as claimed in claim 2, characterized in that: A first transmission shaft (6) is rotatably provided at the bottom of the support seat (12); a second belt (64) is provided between one end of the first transmission shaft (6) and a transmission roller (31) close to the drive motor (33); the second belt (64) is connected to the first transmission shaft (6) and the transmission roller (31) through a pulley; an end of the first transmission shaft (6) away from the first belt (61) is connected to a second transmission shaft (62) through two meshing second bevel gears (63); a second belt (64) is provided between the second transmission shaft (62) and the second rotating shaft (22); the second belt (64) is specifically connected to the second transmission shaft (62) and the second rotating shaft (22) through a pulley.

10. A spraying method for a sewage pipe preservative spraying device according to claims 1-9, characterized in that: The steps include: S1. Place the two ends of the sewage pipe to be sprayed with anti-corrosion paint on two placement rollers (11), insert the two ends into two installation pipes (14) respectively, and fix the two ends of the sewage pipe by opening the plate (17); S2, at this time, the driving motor (33) is started, and the driving motor (33) drives the column (35) to move through the conveyor belt (32), and at the same time, the installed installation pipe (14) will rotate along with the transmission of the driving motor (33), thereby driving the positioned sewage pipe to rotate; S3. When the nozzle (38) moves along with the column (35), the rotating column (36) will swing back and forth, and the nozzle (38) will fully spray paint on the sewage pipe.

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