Steel pipe inner wall anticorrosive paint spraying device

Abstract

The invention relates to the technical field of pipe inner wall spraying, and particularly discloses a steel pipe inner wall anticorrosive paint spraying device which comprises a base, a main body frame, a controller, a pair of first hydraulic cylinders, a conveying belt assembly, an adjusting structure, a spraying assembly, a material collecting structure and a discharging assembly. One end of the main body frame is fixedly arranged on the upper wall of the right end of the base, rectangular pipes are stored, stacked and placed through the material collecting structure, the main body frame is matched with the pipes of different thicknesses and widths for use, the main body frame is matched with the discharging set for single-pipe discharging, the spraying assembly is directly sleeved with a pipe groove, spraying of the inner wall of the pipe groove is achieved, and discharging and transferring can be directly conducted after spraying. The adjusting structure can be adjusted to a certain degree according to the sizes of different pipes to enhance practicability, a spraying assembly drives a spraying head to swing in a reciprocating mode, and the swing spraying range is adjusted according to the size of the inner wall of the rectangular pipe groove.

Description

Technical Field

[0001] The invention relates to the technical field of pipe inner wall spraying, and in particular to a device for spraying anti-corrosion coating on the inner wall of a steel pipe. Background Art

[0002] Anti-corrosion spraying for steel pipes is a commonly used anti-corrosion treatment method for steel pipes. By spraying an anti-corrosion coating on the surface of the steel pipe, the steel pipe can be effectively isolated from contact with external corrosive media, thereby extending the service life of the steel pipe. However, some steel pipes are only sprayed on the outer wall, which makes them prone to rust and corrosion from the inside during use. In order to improve the durability of the pipe, the inner wall of the pipe also needs to be sprayed, but nowadays most of the spraying is for round pipes, and the efficiency of manual handheld spraying is low. However, some steel pipes are rectangular pipes, and the existing spraying for the inner wall of round pipes cannot be used for the inner wall spraying of rectangular pipes of different sizes. Summary of the Invention

[0003] The purpose of the present invention is to solve the above-mentioned technical problems of spraying on the inner wall of rectangular pipes, and to provide a device for spraying anti-corrosion coating on the inner wall of steel pipes. The equipment can automatically unload rectangular pipes and spray on the inner walls of rectangular pipes of different sizes, thereby improving spraying efficiency and reducing labor. In order to achieve the purpose of the present invention, the following technical solutions are adopted.

[0004] The present invention provides the following technical solution: a device for spraying anti-corrosion coating on the inner wall of a steel pipe, comprising a base, a main frame, a controller, a pair of first hydraulic cylinders, a conveyor belt assembly, an adjustment structure, a spraying assembly, a collection structure and a blanking assembly; the main frame is L-shaped, one end of the main frame is fixedly arranged on the upper wall of the right end of the base, the controller is fixedly arranged on the middle of the right side wall of the main frame, one end of the pair of first hydraulic cylinders is symmetrically arranged on the lower wall of the other end of the main frame, the conveyor belt assembly is fixedly arranged on the upper wall of the left end of the base, the adjustment structure is fixedly arranged on the telescopic end of the first hydraulic cylinder, the spraying assembly is fixedly arranged on the adjustment structure, the collection structure is fixedly arranged on the base and located at the rear side of the right end of the conveyor belt assembly, and the blanking assembly is fixedly arranged on the collection structure; the controller on the main frame drives the device, the first hydraulic cylinder drives the adjustment structure to rise and fall for rectangular steel pipes with different rear ends, the spraying assembly is used to swing and spray the inner wall, the collection structure is used to centrally place rectangular steel pipes of a certain length, and the width and thickness can be adjusted, the blanking assembly is used to carry out single-tube blanking and is sleeved on the spraying assembly for spraying.

[0005] Preferably, the adjustment structure includes a flip frame, a liquid pump, a driving shaft, a second hydraulic cylinder, a cylinder frame, a pair of third hydraulic cylinders and a bearing assembly; the upper wall of the flip frame is fixedly arranged between the telescopic ends of a pair of first hydraulic cylinders, the liquid pump is fixedly arranged on the upper wall of the flip frame, and a five-way pipe is provided at the liquid outlet end of the liquid pump, one end of the driving shaft is movably passed through the two ends of the flip frame, one end of the second hydraulic cylinder is movably arranged on the front side wall of the flip frame, and the telescopic end of the second hydraulic cylinder is tilted to the right and movably connected to the other end of the driving shaft, the cylinder frame is fixedly sleeved on the driving shaft and movably embedded in the flip frame, one end of a pair of third hydraulic cylinders is fixedly passed through the lower wall of the cylinder frame and are symmetrically close to the front and rear ends, and the bearing assembly is fixedly arranged on the telescopic end of the third hydraulic cylinder.

[0006] Preferably, the carrying assembly includes a carrying plate, a stopper edge, a pair of side baffles, a pair of first bolts, a spraying arm, a first motor and a plurality of fixed pipe claws; one end of the carrying plate is fixedly arranged between a pair of telescopic ends of the third hydraulic cylinder, and the carrying plate is provided with a socket through the front side wall near one end, the stopper edge is fixedly arranged on the upper wall of the carrying plate and is located above the socket, one end of the pair of side baffles are movably inserted in the socket, and the other end of the side baffles are respectively parallel to the carrying plate, the upper wall of the other end of the side baffle is located above the carrying plate, a pair of first bolts are movably passed through the two ends of the stopper edge and screwed into the upper wall of the socket, the first bolts are respectively fitted with one end of the side baffle, one end of the spraying arm is fixedly arranged in the middle of the left side wall of the bottom end of the cylinder frame, the first motor is fixedly arranged in the other end of the spraying arm, and the first motor driving end movably passes through the left wall of the spraying arm, and a plurality of fixed pipe claws are respectively arranged on the side walls of the spraying arm.

[0007] Preferably, the spraying assembly includes a drive box, two pairs of wheel axles, a driving gear, two pairs of driven wheels, two pairs of swing arms and two pairs of spray heads; the drive box is fixedly arranged on the other end of the spray arm, and the drive box movably sleeved on the driving end of the first motor, and the upper and lower side walls of the drive box and the middle of the front and rear side walls are provided with swing grooves, the two pairs of wheel axles are movably embedded between the left and right side walls of the drive box, and the wheel axles correspond to the swing grooves respectively, the driving gear is fixedly sleeved on the driving end of the first motor, and the driving gear is located in the middle of the driving box, the two pairs of driven wheels are half-gear structures, the two pairs of driven wheels are fixedly sleeved on the wheel axles, and the driven wheels are respectively meshed with the driving gears, one end of the two pairs of swing arms are respectively fixed on the driven wheels, and the other end of the swing arm movably passes through the swing groove, the two pairs of spray heads are respectively fixedly arranged on the other end of the swing arm, and the spray heads are connected to the five-way pipe through pipes, and the pipes are respectively limited by fixed pipe claws.

[0008] Preferably, the aggregate structure includes a lifting arm, a pair of box plates, a pair of second bolts, a pair of adjusting screws, a pair of front baffles and several nuts; one end of the lifting arm is fixedly provided on the upper wall of the base and is located at the rear side of the right end of the conveyor belt assembly, a pair of box plates are movably sleeved on the other end of the lifting arm, and the box plate is located above the right end of the conveyor belt assembly, a pair of left side walls of the box plates have a certain spacing, and the lower wall of the box plates have a certain spacing relative to each other, a pair of right end inner walls of the box plates are relatively provided with lifting slots, a pair of second bolts are movably screwed into the left end of the box plate and fit with the lifting arm, one end of a pair of adjusting screws are movably passed through the right end of the box plate and correspond to the lifting slot, one end of a pair of front baffles are respectively fixedly provided on the top end of the adjusting screw, and the front baffle is inserted in the lifting slot, a pair of front baffles respectively correspond to the lower wall of the box plate, a number of nuts are movably screwed on the adjusting screw, and the adjusting screw is limited to the box plate by the nut.

[0009] Preferably, the unloading assembly includes a boom, an electric slide, a toggle seat, a gear lever, a toggle claw and a spring; one end of the boom is fixedly mounted on the other end of the boom and is located between the box plates, the other end of the boom is located on the left side of the box plates, the electric slide is fixedly arranged on the other end of the boom and is located below the box plates, the toggle seat is fixedly arranged on the electric slide, and the toggle seat moves left and right and is located on the right side of the box plates, the gear lever is fixedly arranged on the left side wall of the toggle seat, one end of the toggle claw is movably embedded in the toggle seat, one end of the spring is fixedly arranged on the toggle seat, and the other end of the spring is obliquely connected to one end of the toggle claw.

[0010] Preferably, the shift claw cannot be turned to the left due to the limit of the shift lever, and the shift claw is forced to turn to the right.

[0011] Preferably, the lower wall of the box plate corresponds to the supporting plate and is used to receive the blanking pipes.

[0012] Preferably, the left end of the carrying plate is turned downward and located above the right end of the conveyor belt assembly for unloading materials after spraying.

[0013] The present invention proposes a device for spraying anti-corrosion coating on the inner wall of a steel pipe, which has the following beneficial effects: rectangular pipes are stored and stacked by an aggregate structure, and are suitable for use with pipes of different thicknesses and widths; single-pipe blanking is performed in cooperation with a blanking group, so that the pipe groove is directly mounted on the spraying assembly, and the inner wall of the pipe groove is sprayed, and the material can be directly unloaded and transferred after spraying; the adjustment structure can also be adjusted to a certain extent according to different pipe sizes to enhance practicality; the spraying assembly drives the nozzle to swing back and forth, and the swing spraying range is adjusted according to the size of the inner wall of the rectangular pipe groove; in summary, the present invention has the following beneficial effects:

[0014] 1. The use of aggregate structures to store and stack rectangular pipes can fully utilize space, achieve orderly storage of pipes, improve pipe storage efficiency and site utilization, facilitate management and access, and can be used with pipes of different thicknesses and widths, demonstrating good versatility. This means there is no need to design multiple specialized storage and processing facilities for pipes of different specifications, reducing costs and improving the applicability and flexibility of the entire solution.

[0015] 2. The collaborative operation is smooth, and the single pipe is cut in cooperation with the cutting group. This close cooperation optimizes the production process, making the transition of pipes from storage to cutting and then to subsequent processing smoother, reducing the waiting time and operational errors in the intermediate links, and helping to improve overall production efficiency.

[0016] 3. The inner wall spraying is convenient, which enables the pipe trough to be directly mounted on the spraying assembly to realize the spraying of the inner wall of the pipe trough. This design simplifies the operation process of spraying the inner wall of the pipe trough; compared with the traditional complex clamping and positioning method, the inner wall of the pipe trough can be sprayed more quickly and accurately, ensuring the spraying quality and efficiency; and after spraying, it can be directly unloaded and transferred, further improving the continuity of production and reducing the turnover time.

[0017] 4. The adjustment structure can be adjusted to a certain extent according to the size of different pipes, which enhances the practicality of the solution. This enables the equipment to adapt to the processing needs of pipes of various specifications. When facing different order requirements, there is no need to frequently replace equipment or carry out large-scale modifications, which reduces production costs and improves the efficiency and economy of equipment use.

[0018] 5. The spraying assembly drives the nozzle to swing back and forth, and can adjust the swing spraying range according to the size of the inner wall of the rectangular pipe groove; this feature ensures that the nozzle can cover all parts of the inner wall of the pipe groove, achieves uniform spraying, improves the spraying effect and quality, avoids problems such as uneven spraying and spray leakage, and improves the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the assembly structure of the present invention;

[0020] Figure 2 A schematic diagram of the structure is shown for the main frame;

[0021] Figure 3 Schematic diagram of the structure split for regulating structure;

[0022] Figure 4 This is a schematic diagram of the disassembled structure of the spraying component;

[0023] Figure 5 This is an enlarged structural diagram of the spray assembly;

[0024] Figure 6 It is a schematic diagram of the assembly structure of the adjustment structure and the spraying component;

[0025] Figure 7 Schematic diagram of the aggregate structure splitting structure;

[0026] Figure 8 This is a schematic diagram of the split structure of the blanking component;

[0027] Figure 9 It is a schematic diagram of the assembly structure of the aggregate structure and the blanking component;

[0028] Figure 10 for Figure 5 A local enlarged structural diagram in FIG.

[0029] Figure 11 for Figure 8 Schematic diagram of the local enlarged structure at point B in the figure.

[0030] In the figure: 1. Base, 2. Main frame, 3. Controller, 4. First hydraulic cylinder, 5. Conveyor belt assembly, 6. Adjustment structure, 61. Turning frame, 62. Liquid pump, 63. Drive shaft, 64. Second hydraulic cylinder, 65. Cylinder frame, 66. Third hydraulic cylinder, 67. Bearing assembly, 671. Bearing plate, 672. Baffle, 673. Side baffle, 674. First bolt, 675. Spraying arm, 676. First motor, 677. Pipe fixing claw, 7. Spraying assembly , 71. Drive box, 72. Axle, 73. Drive gear, 74. Driven wheel, 75. Two pairs of swing arms, 76. Sprinkler, 8. Aggregate structure, 81. Hanging arm, 82. Box plate, 83. Second bolt, 84. Adjusting screw, 85. Front baffle, 86. Nut, 9. Unloading assembly, 91. Hanging rod, 92. Electric slide rail, 93. Toggle seat, 94. Gear lever, 95. Toggle claw, 96. Spring, 11. Lifting slot, 12. Socket, 13. Swinging slot. DETAILED DESCRIPTION

[0031] The following is combined with Figures 1-11 A detailed description of the specific implementation of the present invention is given below.

[0032] The present invention provides a technical solution: Figure 1 and Figure 2As shown, a device for spraying anti-corrosion coating on the inner wall of a steel pipe is characterized in that it includes a base 1, a main frame 2, a controller 3, a pair of first hydraulic cylinders 4, a conveyor belt assembly 5, an adjustment structure 6, a spray assembly 7, a gathering structure 8 and a discharge assembly 9; the main frame 2 is L-shaped, one end of the main frame 2 is fixedly arranged on the upper wall of the right end of the base 1, the controller 3 is fixedly arranged in the middle of the right side wall of the main frame 2, one end of a pair of first hydraulic cylinders 4 is symmetrically arranged on the lower wall of the other end of the main frame 2, the conveyor belt assembly 5 is fixedly arranged on the upper wall of the left end of the base 1, and the adjustment structure 6 is fixedly arranged on the extension of the first hydraulic cylinder 4. On the contracted end, the spraying assembly 7 is fixedly arranged on the adjusting structure 6, the collecting structure 8 is fixedly arranged on the base 1 and is located at the rear side of the right end of the conveyor belt assembly 5, and the unloading assembly 9 is fixedly arranged on the collecting structure 8; the equipment is driven by the controller 3 on the main frame 2, and the adjusting structure 6 is driven to rise and fall by the first hydraulic cylinder 4 for rectangular steel pipes with different rear ends, and the inner wall is swung and sprayed by the spraying assembly 7, and rectangular steel pipes of a certain length are placed together by the collecting structure 8, and the width and thickness can be adjusted, and single-tube unloading is carried out by the unloading assembly 9 and is mounted on the spraying assembly 7 for spraying.

[0033] As a further embodiment of the present invention, Figure 3 As shown, the adjustment structure 6 includes a flip frame 61, a liquid pump 62, a drive shaft 63, a second hydraulic cylinder 64, a cylinder frame 65, a pair of third hydraulic cylinders 66 and a bearing assembly 67; the flip frame 61 is a door-shaped frame, the upper wall of the flip frame 61 is fixedly arranged between the telescopic ends of the pair of first hydraulic cylinders 4, the liquid pump 62 is fixedly arranged on the upper wall of the flip frame 61, and the liquid outlet end of the liquid pump 62 is provided with a five-way pipe 14, the drive shaft 63 is L-shaped, and one end of the drive shaft 63 is movable through both ends of the flip frame 61, and one end of the second hydraulic cylinder 64 is movably arranged on the flip frame 61 front side wall, and the telescopic end of the second hydraulic cylinder 64 is tilted to the right and movably connected to the other end of the driving shaft 63, the cylinder frame 65 is fixedly sleeved on the driving shaft 63 and movably embedded in the flip frame 61, a pair of third hydraulic cylinders 66 one end are respectively fixed through the lower wall of the cylinder frame 65 and are symmetrical close to the front and rear ends, and the bearing assembly 67 is fixedly set on the telescopic end of the third hydraulic cylinder 66; the driving shaft 63 is driven to rotate by the second hydraulic cylinder 64 to drive the cylinder frame 65 to flip, and the overall height of the bearing assembly 67 is adjusted by the third hydraulic cylinder 66.

[0034] As a further embodiment of the present invention, Figure 3As shown, the bearing assembly 67 includes a bearing plate 671, a retaining edge 672, a pair of side baffles 673, a pair of first bolts 674, a spray arm 675, a first motor 676 and a plurality of pipe fixing claws 677; one end of the bearing plate 671 is fixedly arranged between the telescopic ends of a pair of third hydraulic cylinders 66, and a socket 12 is penetrated through the front side wall of the bearing plate 671 near one end, the retaining edge 672 is fixedly arranged on the upper wall of the bearing plate 671 and is located above the socket 12, one end of a pair of side baffles 673 are respectively movably inserted into the socket 12, and the other ends of the side baffles 673 are respectively parallel to the bearing plate 671, and the upper wall of the other end of the side baffle 673 is located above the bearing plate 671, and a pair of first bolts 674 are respectively movably penetrated at both ends of the retaining edge 672 and are screwed In the upper wall of the socket 12, the first bolt 674 is respectively fitted with one end of the side baffle 673, one end of the spray arm 675 is fixedly set in the middle of the left side wall of the bottom end of the cylinder frame 65, and the first motor 676 is fixedly set in the other end of the spray arm 675, and the driving end of the first motor 676 moves through the left side wall of the spray arm 675, and a number of pipe claws 677 are respectively set on the side walls of the spray arm 675; the pipe is received by the supporting plate 671 and blocked on the right side with the help of the retaining edge 672, and the side baffle 673 fixed by the first bolt 674 is used to limit and adjust the front and rear widths, and the first motor 676 and the spray assembly 7 are supported by the spray arm 675, and the length of the spray arm 675 is suitable for pipes that are smaller than the length of the spray arm 675.

[0035] As a further embodiment of the present invention, Figure 4 、 Figure 5 and Figure 10 As shown, the spraying assembly 7 includes a drive box 71, two pairs of wheel axles 72, a drive gear 73, two pairs of driven wheels 74, two pairs of swing arms 75 and two pairs of nozzles 76; the drive box 71 is fixedly arranged on the other end of the spray arm 675, and the drive box 71 is movably mounted on the driving end of the first motor 676. The upper and lower side walls of the drive box 71 and the middle of the front and rear side walls are provided with swing grooves 13. The two pairs of wheel axles 72 are movably embedded between the left and right side walls of the drive box 71, and the wheel axles 72 correspond to the swing grooves 13 respectively. The drive gear 73 is fixedly mounted on the driving end of the first motor 676, and the drive gear 73 is located in the middle of the drive box 71. The two pairs of driven wheels 7 4 are all half-gear structures, two pairs of driven wheels 74 are fixedly mounted on the wheel shaft 72, and the driven wheels 74 are respectively engaged with the driving gear 73, one end of the two pairs of swing arms 75 are respectively fixedly set on the driven wheels 74, and the other ends of the swing arms are respectively movable through the swing slots 13, two pairs of spray heads 76 are respectively fixedly set at the other ends of the swing arms, and the spray heads 76 are connected to the five-way pipe 14 through pipes, and the pipes are respectively limited by the fixed pipe claws 677; the driven wheel 74 is carried by the drive box 71, and is connected to the first motor 676 for rotation through the drive wheel, and the swing arms on the driven wheel 74 are driven to swing through the engagement of the drive wheel and the driven wheel 74, and spraying is performed through the spray heads 76.

[0036] As a further embodiment of the present invention, Figure 7 and Figure 9 As shown, the aggregate structure 8 includes a boom 81, a pair of box plates 82, a pair of second bolts 83, a pair of adjusting screws 84, a pair of front baffles 85 and a number of nuts 86; the boom 81 is L-shaped, one end of the boom 81 is fixedly arranged on the upper wall of the base 1 and is located at the rear side of the right end of the conveyor belt assembly 5, a pair of box plates 82 are movably sleeved on the other end of the boom 81, and the box plates 82 are located above the right end of the conveyor belt assembly 5, the left side walls of the pair of box plates 82 have a certain distance, and the lower walls of the box plates 82 have a certain distance relative to each other, the inner side walls of the right ends of the pair of box plates 82 are relatively provided with lifting grooves 11, a pair of second bolts 83 are movably screwed into the left end of the box plates 82 and fit with the boom 81, a pair of One end of the adjusting screw 84 is movably passed through the right end of the box plate 82 and corresponds to the lifting groove 11. One end of a pair of front baffles 85 is fixedly set on the top of the adjusting screw 84, and the front baffles 85 are inserted in the lifting groove 11. A pair of front baffles 85 respectively correspond to the lower wall of the box plate 82. A number of nuts 86 are movably screwed on the adjusting screw 84, and the adjusting screw 84 is limited on the box plate 82 by the nut 86; the box plate 82 is supported by the hanging arm 81, and the relative distance of the box plate 82 can be adjusted on the hanging arm 81 by the second bolt 83. The height of the front baffle 85 on the box plate 82 is adjusted by cooperating with the adjusting screw 84 and the nut 86 for discharging pipes of different thicknesses.

[0037] As a further embodiment of the present invention, Figure 8 and Figure 11 As shown, the blanking assembly 9 includes a boom 91, an electric slide 92, a toggle seat 93, a gear lever 94, a toggle claw 95 and a spring 96; one end of the boom 91 is fixedly mounted on the other end of the boom 81 and is located between the box plates 82, the other end of the boom 91 is located on the left side of the box plate 82, the electric slide 92 is fixedly set on the other end of the boom 91 and is located below the box plate 82, the toggle seat 93 is fixedly set on the electric slide 92, and the toggle seat 93 moves left and right and is located on the right side of the box plate 82, the gear lever 94 is fixedly set on the left side wall of the toggle seat 93, and one end of the toggle claw 95 is movably embedded in the toggle In the seat 93, one end of the spring 96 is fixedly set on the toggle seat 93, and the other end of the spring 96 is obliquely connected to one end of the toggle claw 95; the toggle seat 93 is driven to move from left to right by the electric slide 92, and the toggle claw 95 is blocked by the gear lever 94, so that the toggle claw 95 moves from left to right and cannot be flipped, thereby driving the pipe at the bottom between the box plates 82 to apply force to the right. When the electric slide 92 drives the toggle seat 93 to reset from right to left, the toggle claw 95 is blocked by the pipe and flips to the right and stretches the spring 96, and then the toggle claw 95 can be reset by flipping to the bottom of the box plate 82.

[0038] As a further embodiment of the present invention, Figure 11 As shown, the shift claw 95 is limited by the shift lever 94 and cannot be turned to the left, and the shift claw 95 is forced to turn to the right for one-way pushing and resetting.

[0039] As a further solution of the present invention, the lower wall of the box plate 82 corresponds to the supporting plate 671 and is used to receive the blanking pipes and correspondingly receive the spraying pipes.

[0040] As a further solution of the present invention, the left end of the supporting plate 671 is turned downward and located above the right end of the conveyor belt assembly 5, which is used for unloading materials after spraying and for unloading pipes after spraying.

[0041] The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process. The specific operations are as follows.

[0042] Working principle:

[0043] Step 1: First, support the equipment horizontally with the base 1 and turn on the power; at the same time, connect the liquid inlet end of the liquid pump 62 to the spraying feeding equipment, and stir and carry the spraying material through the existing equipment;

[0044] Step 2: Then: put the rectangular pipes into the aggregate structure 8 and stack them;

[0045] Step 3: Secondly, the controller 3 on the main frame 2 drives the blanking assembly 9 to push the bottom pipe to the right onto the bearing assembly 67 in the adjustment structure 6, and the pipe moves to the right to be sleeved on the spraying assembly 7. As the pipe moves, the four inner side walls are sprayed with the help of the spraying assembly 7;

[0046] Step 4: After spraying, the pipe is turned over by the carrying assembly 67, and with the help of its own gravity, it slides down to the conveyor belt assembly 5 and is transported to the left for unloading after spraying;

[0047] Step 5: Due to the reciprocating drive of the blanking component 9, single-tube blanking is carried out in sequence for matching spraying.

[0048] In summary:

[0049] The working principle of the aggregate structure 8 is as follows: pipes are placed between the two box plates 82 and stacked on the opposite lower walls of the box plates 82. The top pipe can be placed through the top of the left side wall of the box plate 82;

[0050] The pipes located between the two box plates 82 are stacked and placed. According to the thickness of the plate, the nut 86 is turned to adjust the screw 84 to rise and fall on the box plate 82, and the height of the bottom end of the front baffle 85 is adjusted to fit the thickness of the pipe, and then the height of the bottom end of the front baffle 85 is slightly higher than the thickness of the pipe; the stacked pipes are then shielded by the front baffle 85, that is, when the bottom pipe is forced to be unloaded, the upper pipe is shielded by the front baffle 85;

[0051] When the pipes have different widths and thicknesses, the height of the front baffle 85 is adjusted accordingly, and the box plate 82 is moved to adjust the spacing on the boom 81, and then fixed with the second bolt 83 after adjustment;

[0052] The working principle of the blanking component 9 is explained as follows: after the pipe is placed between the box plates 82, the electric slide rail 92 on the driving rod 91 drives the toggle seat 93 to move from left to right, that is, the toggle seat 93 moves from the left side of the box plate 82 and passes through the box plates 82 to the right, and the shift lever 94 is limited, prompting the toggle claw 95 to be forced to push the bottom pipe groove to the right, that is, to push the pipe to the supporting plate 671 in the supporting component 67; when the toggle seat 93 moves from right to left to reset, since the bottom pipe is pushed out after unloading, the pipes assembled between the box plates 82 sink due to gravity, and then the toggle claw 95 is exerted with force by the pipe, and the left end of the pipe is blocked by the left side wall of the box plate 82, prompting the toggle claw 95 to flip to the right and pull the spring 96, prompting the toggle claw 95 to move and reset under the pipe so that it can be used for the next unloading.

[0053] The working principle of the spray assembly 7 is explained as follows: after the pipe is unloaded onto the supporting plate 671, the right end is blocked and limited by the baffle, that is, the pipe is put on the spray assembly 7 as it is unloaded, and can be fed with the help of the liquid pump 62, and diverted through the five-way pipe 14, and transported to the nozzle 76 through the fixed pipe claw 677 to limit the pipeline, and can be sprayed out through the nozzle 76 for spraying, and because the sizes of different rectangular pipes are different, the first motor 676 on the spray arm 675 is driven to drive the driving wheel to rotate back and forth, and the driving wheel can drive the driven wheel 74 to rotate back and forth on the wheel axle 72, so that the swing arm swings in the swing groove 13 to drive the nozzle 76, and realize spraying in different ranges.

[0054] The working principle of the adjustment structure 6 is described as follows: after the pipe is unloaded and sleeved on the spray assembly 7 and the spray arm 675, the pipe is supported by the carrying plate 671, and the right end of the pipe is blocked and limited by the stop edge 672. Pipes of different widths are limited and blocked by adjusting the spacing of the side baffles 673 by rotating the first bolt 674; after the pipe is sprayed, the second hydraulic cylinder 64 on the turning frame 61 can be driven to drive the drive shaft 63 to rotate a certain angle, thereby driving the cylinder frame 65 to turn over, causing the carrying assembly 67 to tilt and turn toward the right end of the conveyor belt assembly 5, so that the pipe can slide onto the conveyor belt assembly 5 under its own gravity, and be transported to the left by the conveyor belt assembly 5 to achieve unloading;

[0055] Since different pipes have different thicknesses, the center of the pipe needs to be opposite to the spray assembly 7 in order to effectively fit on the spray assembly 7 and spray the inner wall; therefore, the overall height of the supporting assembly 67 is adjusted by driving the first hydraulic cylinder 4; the supporting assembly 67 is driven up and down by driving the third hydraulic cylinder 66, that is, the distance between the supporting plate 671 and the spray arm 675 is adjusted to control the pipe to be effectively fitted on the spray arm 675;

[0056] When the front baffle 85 is adjusted to be raised or lowered for unloading of plates of different thicknesses, the front baffle 85 will move in the lifting groove 11; when the pipe of fixed width is adjusted, the spacing of the box plate 82 is adjusted and the side baffle 673 is adjusted to move in the socket 12.

[0057] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for spraying anti-corrosion coating on the inner wall of a steel pipe, characterized by: The invention comprises a base (1), a main frame (2), a controller (3), a pair of first hydraulic cylinders (4), a conveyor belt assembly (5), an adjustment structure (6), a spray assembly (7), a material collecting structure (8) and a material discharging assembly (9); one end of the main frame (2) is fixedly arranged on the upper wall of the right end of the base (1), the controller (3) is fixedly arranged on the middle part of the right side wall of the main frame (2), one end of the pair of first hydraulic cylinders (4) are symmetrically arranged on the lower wall of the other end of the main frame (2), the conveyor belt assembly (5) is fixedly arranged on the upper wall of the left end of the base (1), the adjustment structure (6) is fixedly arranged on the telescopic end of the first hydraulic cylinder (4), the spray assembly (7) is fixedly arranged on the telescopic end of the first hydraulic cylinder (4), and the material discharging assembly (9) is fixedly arranged on the upper wall of the left end of the base (1). The component (7) is fixedly arranged on the adjustment structure (6), the collecting structure (8) is fixedly arranged on the base (1) and is located at the rear side of the right end of the conveyor belt component (5), and the blanking component (9) is fixedly arranged on the collecting structure (8); the device is driven by the controller (3) on the main frame (2), and the adjusting structure (6) is driven to lift and lower the rectangular steel pipes for different rear ends through the first hydraulic cylinder (4), and the inner wall is sprayed by the spraying component (7), and rectangular steel pipes of a certain length are centrally placed through the collecting structure (8), and the width and thickness can be adjusted, and single-tube blanking is performed through the blanking component (9) and is mounted on the spraying component (7) for spraying.

2. The anti-corrosion coating spraying device for the inner wall of a steel pipe according to claim 1, characterized in that: The regulating structure (6) comprises a turning frame (61), a liquid pump (62), a driving shaft (63), a second hydraulic cylinder (64), a cylinder frame (65), a pair of third hydraulic cylinders (66) and a bearing assembly (67); The upper wall of the flip frame (61) is fixedly arranged between the telescopic ends of a pair of first hydraulic cylinders (4); the liquid pump (62) is fixedly arranged on the upper wall of the flip frame (61), and the liquid outlet end of the liquid pump (62) is provided with a five-way pipe (14); one end of the driving shaft (63) is movably passed through the two ends of the flip frame (61); one end of the second hydraulic cylinder (64) is movably arranged on the front side wall of the flip frame (61), and the telescopic end of the second hydraulic cylinder (64) is tilted to the right and movably connected to the other end of the driving shaft (63); the cylinder frame (65) is fixedly sleeved on the driving shaft (63) and movably embedded in the flip frame (61); one end of the pair of third hydraulic cylinders (66) is fixedly passed through the lower wall of the cylinder frame (65) and is symmetrically close to the front and rear ends; the bearing assembly (67) is fixedly arranged on the telescopic end of the third hydraulic cylinder (66).

3. The device for spraying anti-corrosion coating on the inner wall of a steel pipe according to claim 2, characterized in that: The bearing assembly (67) includes a bearing plate (671), a retaining edge (672), a pair of side retaining plates (673), a pair of first bolts (674), a spraying arm (675), a first motor (676), and a plurality of pipe fixing claws (677); One end of the carrier plate (671) is fixedly arranged between the telescopic ends of a pair of the third hydraulic cylinders (66); a socket (12) is provided through the front side wall of the carrier plate (671) near one end; the retaining edge (672) is fixedly arranged on the upper wall of the carrier plate (671) and is located above the socket (12); one end of a pair of side baffles (673) is movably inserted into the socket (12), and the other end of the side baffles (673) is parallel to the carrier plate (671); the upper wall of the other end of the side baffles (673) is located above the carrier plate (671); a pair of The first bolt (674) is respectively movable through the two ends of the retaining edge (672) and is screwed into the upper wall of the socket (12). The first bolt (674) is respectively fitted with one end of the side baffle (673). One end of the spray arm (675) is fixedly arranged in the middle of the left side wall of the bottom end of the cylinder frame (65). The first motor (676) is fixedly arranged in the other end of the spray arm (675), and the driving end of the first motor (676) is movable through the left side wall of the spray arm (675). A plurality of the pipe fixing claws (677) are respectively arranged on the side wall of the spray arm (675).

4. The device for spraying anti-corrosion coating on the inner wall of a steel pipe according to claim 3, characterized in that: The spraying assembly (7) includes a drive box (71), two pairs of wheel shafts (72), a drive gear (73), two pairs of driven wheels (74), two pairs of swing arms (75) and two pairs of spray heads (76); The driving box (71) is fixedly arranged on the other end of the spraying arm (675), and the driving box (71) is movably mounted on the driving end of the first motor (676). The upper and lower side walls and the middle of the front and rear side walls of the driving box (71) are provided with swing grooves (13). The two pairs of wheel shafts (72) are movably mounted between the left and right side walls of the driving box (71), and the wheel shafts (72) correspond to the swing grooves (13) respectively. The driving gear (73) is fixedly mounted on the driving end of the first motor (676), and the driving gear (73) is located in the driving box. In the middle of the inner portion of (71), the two pairs of driven wheels (74) are both half-gear structures. The two pairs of driven wheels (74) are respectively fixedly mounted on the wheel shaft (72), and the driven wheels (74) are respectively engaged with the driving gear (73). One end of the two pairs of swing arms is respectively fixedly arranged on the driven wheels (74), and the other end of the swing arm is respectively movable through the swing groove (13). The two pairs of nozzles (76) are respectively fixedly arranged on the other end of the swing arm, and the nozzles (76) are connected to the five-way pipe (14) through a pipe, and the pipe is respectively limited by the fixed pipe claw (677).

5. The device for spraying anti-corrosion coating on the inner wall of a steel pipe according to claim 4, characterized in that: The aggregate structure (8) includes a suspension arm (81), a pair of box plates (82), a pair of second bolts (83), a pair of adjusting screws (84), a pair of front baffles (85) and a plurality of nuts (86); One end of the boom (81) is fixedly arranged on the upper wall of the base (1) and is located at the rear side of the right end of the conveyor belt assembly (5); a pair of the box plates (82) are respectively movably mounted on the other end of the boom (81), and the box plates (82) are located above the right end of the conveyor belt assembly (5); the left side walls of the pair of box plates (82) are spaced apart, and the lower walls of the box plates (82) are relatively spaced apart; the inner side walls of the right ends of the pair of box plates (82) are relatively provided with lifting grooves (11); a pair of the second bolts (83) are respectively movably screwed into the left end of the box plate (82) and connected to the boom (81); The arms (81) are fitted together, one end of a pair of adjusting screws (84) are respectively movably passed through the right end of the box plate (82) and correspond to the lifting groove (11), one end of a pair of front baffles (85) are respectively fixedly arranged on the top of the adjusting screw (84), and the front baffles (85) are inserted into the lifting groove (11), and the pair of front baffles (85) are respectively corresponding to the lower wall of the box plate (82), and a plurality of nuts (86) are respectively movably screwed on the adjusting screws (84), and the adjusting screws (84) are limited on the box plate (82) by the nuts (86).

6. The device for spraying anti-corrosion coating on the inner wall of a steel pipe according to claim 5, characterized in that: The blanking assembly (9) comprises a suspension rod (91), an electric slide rail (92), a toggle seat (93), a shift lever (94), a toggle claw (95) and a spring (96); One end of the suspension rod (91) is fixedly mounted on the other end of the suspension arm (81) and is located between the box plates (82). The other end of the suspension rod (91) is located on the left side of the box plate (82). The electric slide rail (92) is fixedly arranged on the other end of the suspension rod (91) and is located below the box plate (82). The toggle seat (93) is fixedly arranged on the electric slide rail (92), and the toggle seat (93) moves left and right and is located on the right side of the box plate (82). The gear lever (94) is fixedly arranged on the left side wall of the toggle seat (93). One end of the toggle claw (95) is movably embedded in the toggle seat (93). One end of the spring (96) is fixedly arranged on the toggle seat (93), and the other end of the spring (96) is obliquely connected to one end of the toggle claw (95).

7. The device for spraying anti-corrosion coating on the inner wall of a steel pipe according to claim 6, characterized in that: The shifting claw (95) is limited by the shift lever (94) and cannot be turned to the left, and the shifting claw (95) is forced to turn to the right.

8. The device for spraying anti-corrosion coating on the inner wall of a steel pipe according to claim 7, characterized in that: The lower wall of the box plate (82) corresponds to the supporting plate (671) and is used to receive the unloaded pipes.

9. The anti-corrosion coating spraying device for the inner wall of a steel pipe according to claim 8, characterized in that: The left end of the carrying plate (671) is turned downward and located above the right end of the conveyor belt assembly (5) for unloading materials after spraying.

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