Pipeline inner wall spin coating equipment

Abstract

The invention relates to the technical field of spraying equipment, and discloses pipeline inner wall spin-coating equipment which comprises a mounting frame, a sliding rail is mounted on the mounting frame, a top frame is connected to the top of the mounting frame, and the pipeline inner wall spin-coating equipment further comprises a feeding assembly used for feeding and discharging; the rotary clamping assembly is used for clamping the pipeline and driving the pipeline to rotate; the spraying assembly is used for spraying the inner wall of the pipeline; and the air knife is used for drying the pipeline after the pipeline is sprayed. Through cooperation of the feeding assembly, the rotary clamping assembly, the spraying assembly and an air knife, automatic spraying operation of feeding, clamping, spraying, drying and discharging is achieved, the inner wall of a pipeline can be driven to rotate through clamping of two jacking pipes during spraying, spraying heads of the two spraying pipes spray the inner wall of the pipeline in the process of moving in the pipeline, and the spraying efficiency is improved. Local coating deposition is avoided, and the uniformity of coating distribution on the inner wall of the pipeline is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of spraying equipment, and particularly relates to a pipeline inner wall spin coating equipment. Background Art

[0002] In many industrial fields, pipelines, as key carriers for fluid transportation, have an urgent need for protection and functional improvement. According to applications in different fields, specific coatings need to be sprayed on pipelines during the pipeline production process, such as anti-corrosion coatings, antibacterial coatings, anti-static coatings, etc. In the prior art, when spraying coatings on pipelines, spraying devices are usually required. The working principle of existing spraying devices is mainly to suck in and pressurize the paint and spray it onto the pipeline surface using a spray gun.

[0003] Chinese Patent CN214637518U discloses "a PVC pipeline spraying machine", which includes a chassis. Two symmetrically arranged first connecting rods are fixedly hinged to the inner side wall of the chassis. The top of the first connecting rod is rotatably connected to a first clamping wheel, and the bottom of the first connecting rod is rotatably connected to a first sliding wheel. A second connecting rod is fixedly hinged to the inner side wall of the chassis. The top of the second connecting rod is rotatably connected to a second clamping wheel, and the bottom of the second connecting rod is rotatably connected to a second sliding wheel. An electric push rod is fixedly connected to the outside of the chassis, and the telescopic end of the electric push rod penetrates through the chassis and extends into the interior of the chassis. A pushing block is slidably connected to the inner bottom wall of the chassis, and the electric push rod is fixedly connected to the pushing block. A slider is arranged on the top of the pushing block. This PVC pipeline spraying machine solves the problem that it is difficult for existing clamps to rotate the PVC pipeline during clamping, and manual flipping of the PVC pipeline is required, which is very time-consuming and laborious, by using the clamping of the rolling wheel and the clamping wheel on the PVC pipeline body.

[0004] However, in the prior art, the following problems exist: Existing pipeline spraying machines are inconvenient for spraying the inner wall of pipelines. During actual operation, operators need to insert the spraying mechanism into the pipeline to spray the inner wall of the pipeline. At the same time of spraying, operators also need to manually fix and disassemble the pipeline, resulting in low work efficiency. And manual spraying may cause uneven local spraying on the inner wall of the pipeline, and local deposition of paint may occur at the bottom of the inner wall of the pipeline, resulting in uneven coating thickness on the inner wall of the pipeline. Summary of the Invention

[0005] The purpose of the present invention is to provide a pipeline inner wall spin coating equipment to solve the above problems and overcome the defects of the prior art, as described in detail below.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A pipe inner wall spin coating device provided by the present invention includes a mounting frame, on which a slide rail is installed, and a top frame is connected to the top of the mounting frame. It further includes: a feeding component for feeding and discharging; a rotating clamping component for clamping the pipe and driving the pipe to rotate; a spraying component for spraying the inner wall of the pipe; and an air knife for drying the pipe after spraying. The rotating clamping component includes two first sliders, both of which are slidably connected to the slide rail. A driving seat is installed on the first slider, and a top pipe is rotatably installed on the driving seat. The two top pipes are arranged in a mirror image. The spraying component includes two mounting seats, both of which are fixedly connected to the slide rail. A second slider is slidably connected to the mounting seat, and a spraying pipe passes through the second slider. The two spraying pipes respectively pass through the two driving seats and the two top pipes.

[0007] Preferably, a first driving device is arranged inside the first slider, which is used to drive the first slider to move on the slide rail. A second driving device is arranged on the driving seat, which is used to drive the top pipe to rotate on the driving seat.

[0008] Preferably, a third driving device is arranged on the mounting seat, which is used to drive the second slider to move on the mounting seat. A peristaltic pump is arranged on the mounting frame, which is used to convey the coating material. The two spraying pipes are both connected to the peristaltic pump through pipes.

[0009] Preferably, the feeding component includes a feeding plate and a discharging plate, both of which are fixedly installed on the mounting frame. The feeding plate and the discharging plate are respectively located on both sides of the slide rail. Two lifting seats are installed on the slide rail. Two supporting plates are connected to the discharging plate. An extendable lifting block is arranged on the lifting seat, and the lifting block is driven by a cylinder. A sensor is installed on the mounting frame.

[0010] Preferably, the air knife is fixedly installed on the top frame. An air pump is arranged on the mounting frame, which is used to convey air. The air knife is connected to the air pump through a pipe, and a heating device is arranged on the air pump.

[0011] Preferably, an exhaust part is arranged on the driving seat. The exhaust part includes a housing, which is fixedly connected to the driving seat. The spraying pipe passes through the housing. An exhaust channel is opened inside the housing. A through hole is arranged inside the driving seat. The exhaust channel is connected to the through hole of the driving seat. An exhaust interface is installed on the top of the housing, and one of the exhaust interfaces is connected to an external air extraction pump.

[0012] Preferably, a vibration part is arranged on the slide rail. The vibration part includes two portal frames, both of which are fixedly installed on the slide rail. The two portal frames are respectively located between the two first sliders and the two mounting seats. An elastic rod is installed on the portal frame, and an elastic ring is connected to the elastic rod. The spraying pipe penetrates through the elastic ring. An elastic piece is connected to the elastic rod. A sawtooth rack is fixedly connected to one side of the two second sliders close to each other. The two elastic pieces are respectively in contact with the two sawtooth racks during movement.

[0013] Preferably, a polishing part is arranged on the first slider. The polishing part includes a sliding seat, which is fixedly connected to the first slider. A sliding rod is slidably connected to the sliding seat. A grinding head is installed on the sliding rod. A triangular block is connected to the bottom of the sliding rod. A return spring is arranged between the sliding rod and the sliding seat. A resisting rod is fixedly connected to the portal frame. A through groove is arranged at the bottom of the first slider. The resisting rod penetrates through the through groove of the first slider. The triangular block is in contact with the resisting rod during movement. The two grinding heads are respectively in contact with the ends of the two top pipes during movement.

[0014] Preferably, a liquid cylinder is installed on the outer wall of the sliding rod. An air cylinder is fixedly connected to the outer wall of the liquid cylinder. The resisting rod is in contact with the air cylinder during movement. An air pipe is connected between the air cylinder and the liquid cylinder. A flow channel is arranged in the grinding head. A liquid pipe is connected to the liquid cylinder. One end of the liquid pipe away from the liquid cylinder is connected to the flow channel.

[0015] The beneficial effects of the present invention are as follows: 1. For this pipeline inner wall spin coating device, through the cooperation of the feeding component, the rotating clamping component, the spraying component and the air knife, an automated spraying operation of feeding, clamping, spraying, drying and discharging is realized. When spraying the inner wall of the pipeline, the inner wall of the pipeline can be driven to rotate by the clamping of the two top pipes. The nozzles of the two spraying pipes spray the inner wall of the pipeline during the movement inside the pipeline. When the inner wall of the pipeline contacts the paint, centrifugal force is generated by continuous rotation, which can make the paint evenly contact the inner wall of the pipeline, and at the same time can avoid the situation of local paint deposition, improve the uniformity of the paint distribution on the inner wall of the pipeline, also improve the uniformity of the coating thickness, improve the spraying efficiency and spraying quality, and avoid the situation of uneven local spraying.

[0016] 2. For this pipeline inner wall spin coating device, through the arrangement of the exhaust part, the two exhaust interfaces cooperate, one exhaust interface intakes air, and the other exhaust interface exhausts air, so that the water vapor generated inside the pipeline during drying is discharged from the pipeline in time, avoiding the generation of water beads on the inner wall of the pipeline.

[0017] 3. The pipe inner wall spin coating equipment, through the setting of the vibration part, enables the two spraying pipes to vibrate under the influence of the two elastic rings when moving, so that the spraying pipes can promote the uniform flow of the paint in the spraying pipes by using the vibration, and at the same time reduce the problem that the paint in contact with the inner wall of the spraying pipes stays due to low flow rate, avoiding the situation that part of the paint adheres to the inner wall of the spraying pipes for a long time and causes caking.

[0018] 4. The pipe inner wall spin coating equipment, through the setting of the polishing part, enables the two grinding heads to polish the ends of the two top pipes in contact with the two ends of the pipe after the two top pipes are sprayed, maintaining the cleanliness and smoothness of the ends of the two top pipes, and avoiding that after the top pipes are used for a long time, a paint layer accumulates on the tapered ends of the top pipes, resulting in uneven surface thickness and thus affecting the clamping effect; through the setting of the liquid cylinder, a diluent can be attached to the grinding heads when polishing. By adding the diluent, the dissolution and polishing of the coating can be accelerated, thereby optimizing the polishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the feeding assembly of the present invention; Figure 3 is the structural schematic diagram of the blanking plate of the present invention; Figure 4 is the structural schematic diagram of the rotary clamping assembly of the present invention; Figure 5 is the structural schematic diagram of the lifting seat of the present invention; Figure 6 is the structural schematic diagram of the spraying assembly of the present invention; Figure 7 is the structural schematic diagram of the exhaust part of the present invention; Figure 8 is the structural schematic diagram of the vibration part of the present invention; Figure 9 is the structural schematic diagram of the polishing part of the present invention; Figure 10 is the structural schematic diagram of the liquid cylinder of the present invention; Figure 11 is the structural schematic diagram of the flow channel of the present invention.

[0021] The descriptions of the reference numerals are as follows: 1. mounting bracket; 11. slide rail; 12. top bracket; 2. loading component; 21. loading plate; 22. lifting seat; 23. unloading plate; 24. support plate; 25. sensor; 3. rotating clamping component; 31. first slider; 32. driving seat; 33. top pipe; 4. spraying component; 41. mounting seat; 42. second slider; 43. spraying pipe; 5. air knife; 6. exhaust part; 61. housing; 62. exhaust passage; 63. exhaust interface; 7. vibrating part; 71. portal frame; 72. elastic rod; 73. elastic ring; 74. elastic sheet; 75. saw tooth bar; 8. polishing part; 81. sliding seat; 82. slide bar; 83. grinding head; 84. triangular block; 85. abutting rod; 86. liquid cylinder; 87. air cylinder; 88. air pipe; 89. liquid pipe; 810. flow channel. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts shall fall within the scope protected by the present invention.

[0023] Embodiment 1 Please refer to Figure 1 - Figure 5 , which includes a mounting bracket 1. A slide rail 11 is installed on the mounting bracket 1, and a top bracket 12 is connected to the top of the mounting bracket 1. It further includes: a loading component 2 for loading and unloading; the loading component 2 includes a loading plate 21 and an unloading plate 23. Both the loading plate 21 and the unloading plate 23 are fixedly installed on the mounting bracket 1. The loading plate 21 and the unloading plate 23 are respectively located on both sides of the slide rail 11. Two lifting seats 22 are installed on the slide rail 11. Two support plates 24 are connected to the unloading plate 23. A telescopic lifting block is provided on the lifting seat 22. The lifting block is driven by a cylinder. Place the pipe on the loading plate 21. The loading plate 21 is inclined. The pipe rolls along the loading plate 21 onto the lifting blocks of the two lifting seats 22. There are notches on the lifting blocks, and the pipe can be placed on the two notches to keep it in a parallel state. After starting the two lifting seats 22, the two lifting seats 22 drive the two lifting blocks to move upward through the cylinder, and the two lifting blocks lift the pipe. A sensor 25 is installed on the mounting bracket 1. The sensor 25 uses an infrared sensor and can detect whether there is a pipe on the two lifting seats 22. If no pipe is detected, the upper computer will automatically lock and spraying operation cannot be carried out temporarily, avoiding coating leakage and waste caused by human error in starting the spraying operation without a pipe. After drying is completed, the pipe falls onto the two support plates 24. The two support plates 24 and the unloading plate 23 are also inclined. The pipe rolls along the two support plates 24 onto the unloading plate 23 for temporary storage.

[0024] Further, please refer to Figure 1 - Figure 6 , a rotating clamping assembly 3 for clamping a pipeline and driving the pipeline to rotate; the rotating clamping assembly 3 includes two first sliders 31, both of the two first sliders 31 are slidably connected to the slide rail 11, a driving seat 32 is mounted on the first slider 31, a pipe jacking 33 is rotatably mounted on the driving seat 32, the two pipe jackings 33 are arranged in a mirror image, a first driving device is arranged in the first slider 31, the first driving device is used to drive the first slider 31 to move on the slide rail 11, a second driving device is arranged on the driving seat 32, the second driving device is used to drive the pipe jacking 33 to rotate on the driving seat 32, by driving the two first sliders 31 to approach each other by the two first driving devices, when the first slider 31 moves, the pipe jacking 33 is driven to move by the driving seat 32, the end of the pipe jacking 33 is tapered, when the two pipe jackings 33 approach each other, they contact both ends of the pipeline, and the tapered ends of the two pipe jackings 33 abut against both ends of the pipeline to realize clamping of the pipeline. At this time, the two lifting seats 22 drive the two lifting blocks to reset through the air cylinders, and the two second driving devices are started, and the two second driving devices drive the two pipe jackings 33 to rotate, so that the two pipe jackings 33 drive the pipeline to rotate together when rotating.

[0025] Still further, please refer to Figure 1 - Figure 6 , a spraying assembly 4 for spraying the inner wall of the pipeline; the spraying assembly 4 includes two mounting seats 41, both of the two mounting seats 41 are fixedly connected to the slide rail 11, a second slider 42 is slidably connected to the mounting seat 41, a spraying pipe 43 is penetrated and connected to the second slider 42, the two spraying pipes 43 respectively penetrate through the two driving seats 32 and the two pipe jackings 33, after the two spraying pipes 43 respectively pass through the two driving seats 32 and the two pipe jackings 33, they enter the pipeline from both ends of the pipeline, a third driving device is arranged on the mounting seat 41, the third driving device is used to drive the second slider 42 to move on the mounting seat 41, a peristaltic pump is arranged on the mounting frame 1, the peristaltic pump is used to convey paint, the two spraying pipes 43 are both connected to the peristaltic pump through pipelines, the two third driving devices are started to make the two spraying pipes 43 move on the inner wall of the pipeline, the spraying pipe 43 is provided with nozzles, when the nozzles of the two spraying pipes 43 move to the middle part of the pipeline, after starting the peristaltic pump, the peristaltic pump conveys the paint to the two spraying pipes 43, and the two spraying pipes 43 spray out the paint through the nozzles, and the two second driving devices are used to drive the two second sliders 42 to move away from each other, so that the nozzles of the two spraying pipes 43 move from the center position of the inner wall of the pipeline to both ends, thereby spraying the inner wall of the pipeline and improving the spraying uniformity.

[0026] Even further, please refer to Figure 1 - Figure 3, the air knife 5 is used to dry the pipeline after pipeline spraying; the air knife 5 is fixedly installed on the top frame 12, an air pump is arranged on the mounting frame 1, the air pump is used to convey air, the air knife 5 is connected to the air pump through a pipeline, a heating device is arranged on the air pump, after spraying is completed, the peristaltic pump pauses and the two third driving devices pause, the two pipe jacks 33 continue to drive the pipeline to rotate, the air pump is started, after the air pump heats the air by using the heating device, the hot air is conveyed to the air knife 5, and the air knife 5 blows the hot air onto the rotating pipeline to heat the pipeline, so as to achieve the drying effect.

[0027] In addition, please refer to Figure 6 - Figure 7 , an exhaust part 6 is arranged on the driving seat 32, the exhaust part 6 includes a housing 61, the housing 61 is fixedly connected to the driving seat 32, the spraying pipe 43 penetrates through the housing 61, an exhaust passage 62 is opened in the housing 61, a through hole is arranged in the driving seat 32, the exhaust passage 62 is connected to the through hole of the driving seat 32, an exhaust interface 63 is installed on the top of the housing 61, and one of the exhaust interfaces 63 is connected to an external air extraction pump. During drying, the air in the exhaust interface 63 connected to it is sucked by the air extraction pump, so that the exhaust interface 63 extracts the air in the pipeline through the exhaust passage 62 and the through hole of the driving seat 32, and the exhaust interface 63 at the other end of the pipeline sucks the external air through the exhaust passage 62 and the through hole of the driving seat 32, so that the air extraction pump can extract the water vapor generated during drying in the pipeline and keep the dryness in the pipeline.

[0028] In addition to this, please refer to Figure 6 、 Figure 8 , a vibration part 7 is arranged on the slide rail 11, the vibration part 7 includes two portal frames 71, the two portal frames 71 are both fixedly installed on the slide rail 11, the two portal frames 71 are respectively located between the two first sliders 31 and the two mounting seats 41, an elastic rod 72 is installed on the portal frame 71, an elastic ring 73 is connected to the elastic rod 72, the spraying pipe 43 penetrates through the elastic ring 73, an elastic piece 74 is connected to the elastic rod 72, and sawtooth racks 75 are fixedly connected to the sides of the two second sliders 42 close to each other. The two elastic pieces 74 are respectively in contact with the two sawtooth racks 75 during movement. The elastic rod 72, the elastic ring 73 and the elastic piece 74 are all made of elastic materials. When the sawtooth rack 75 moves, it contacts the elastic piece 74 and drives the elastic piece 74 to vibrate. The elastic piece 74 transmits the vibration to the elastic rod 72 and the elastic ring 73, so that the elastic ring 73 can drive the spraying pipe 43 to vibrate, and the spraying pipe 43 can promote the uniform flow of the paint in the spraying pipe 43 by using the vibration.

[0029] It should be noted that, please refer to Figure 6 、 Figures 9 - 11, a polishing part 8 is provided on the first slider 31. The polishing part 8 includes a sliding seat 81, the sliding seat 81 is fixedly connected to the first slider 31, a sliding rod 82 is slidably connected to the sliding seat 81, a grinding head 83 is installed on the sliding rod 82, the bottom of the sliding rod 82 is connected with a triangular block 84, a return spring is arranged between the sliding rod 82 and the sliding seat 81, a contact rod 85 is fixedly connected to the gantry 71, a through groove is provided at the bottom of the first slider 31, the contact rod 85 penetrates through the through groove of the first slider 31, the triangular block 84 contacts the contact rod 85 during movement, when the triangular block 84 contacts the contact rod 85, the contact rod 85 applies a reaction force to the triangular block 84 through the inclined surface of the triangular block 84, so that the triangular block 84 drives the sliding rod 82 to move upward on the sliding seat 81, and the two grinding heads 83 contact the ends of the two jacking pipes 33 respectively during movement. The second driving device is started, and the jacking pipe 33 rotates to make its tapered end rub on the grinding head 83, so as to polish clean the paint adhering to the tapered end of the jacking pipe 33 during the previous spraying operation.

[0030] It should be noted that, please refer to Figures 10 - 11 , a liquid cylinder 86 is installed on the outer wall of the sliding rod 82, an air cylinder 87 is fixedly connected to the outer wall of the liquid cylinder 86, the contact rod 85 contacts the air cylinder 87 during movement, a trachea 88 is connected between the air cylinder 87 and the liquid cylinder 86, a flow channel 810 is arranged in the grinding head 83, a liquid pipe 89 is connected to the liquid cylinder 86, and one end of the liquid pipe 89 far from the liquid pipe 89 is connected to the flow channel 810. A diluent is contained in the liquid cylinder 86, and the liquid cylinder 86 injects the diluent into the flow channel 810 through the liquid pipe 89 by positive pressure. Since the flow channel 810 penetrates through the contact surface between the grinding head 83 and the jacking pipe 33, a layer of diluent can adhere to the grinding head 83. When the grinding head 83 polishes the jacking pipe 33, by adding the diluent, the dissolution and polishing of the coating can be accelerated, so as to optimize the polishing effect.

[0031] With the above structure, the working principle of this case is as follows: Place the pipe on the feeding plate 21. The feeding plate 21 is inclined. The pipe rolls along the feeding plate 21 onto the lifting blocks of the two lifting seats 22. There are notches on the lifting blocks, and the pipe can be placed on the two notches to maintain a parallel state. After starting the two lifting seats 22, the two lifting seats 22 drive the two lifting blocks to move upward through cylinders. The two lifting blocks lift the pipe between the two pipe jacks 33. At this time, the two first driving devices drive the two first sliders 31 to move closer to each other. When the first slider 31 moves, it drives the pipe jack 33 to move through the driving seat 32. The end of the pipe jack 33 is conical. When the two pipe jacks 33 approach each other, they contact the two ends of the pipe. The conical ends of the two pipe jacks 33 abut against the two ends of the pipe to realize the clamping of the pipe. At this time, the two lifting seats 22 drive the two lifting blocks to reset through cylinders. Start the two second driving devices. The two second driving devices drive the two pipe jacks 33 to rotate, so that the two pipe jacks 33 drive the pipe to rotate together when rotating. At this time, start the two third driving devices. The two third driving devices drive the two spraying pipes 43 to approach each other through the two second sliders 42 respectively. At this time, the two spraying pipes 43 move on the inner wall of the pipe. There are nozzles on the spraying pipes 43. When the nozzles of the two spraying pipes 43 move to the middle part of the pipe, start the peristaltic pump. The peristaltic pump conveys the paint to the two spraying pipes 43. The two spraying pipes 43 spray the paint through the nozzles. Since the spraying pipes 43 do not rotate with the pipe jacks 33, when the pipe rotates, the two spraying pipes 43 do not rotate. Drive the two second sliders 42 to move away from each other through the two second driving devices, so that the nozzles of the two spraying pipes 43 move from the center position of the inner wall of the pipe to both ends, thereby spraying the inner wall of the pipe. While the inner wall of the pipe is rotating, the two spraying pipes 43 spray by moving, improving the spraying uniformity, optimizing the spraying quality, and avoiding the situation of uneven local spraying.

[0032] After spraying is completed, the peristaltic pump pauses and the two third driving devices pause. The two pipe jacks 33 continue to drive the pipe to rotate. Start the air pump. After the air pump heats the air using the heating device, it conveys the hot air to the air knife 5. The air knife 5 blows the hot air onto the rotating pipe to heat the pipe, thus achieving a drying effect. While drying, the air in the exhaust interface 63 connected to it is sucked by the air extraction pump, so that the exhaust interface 63 extracts the air in the pipe through the exhaust channel 62 and the through hole of the driving seat 32. The exhaust interface 63, exhaust channel 62 and through hole of the driving seat 32 at the other end of the pipe inhale external air, enabling the air extraction pump to extract the water vapor generated during drying in the pipe and maintaining the dryness inside the pipe.

[0033] After drying is completed, control the two pipe jacks 33 to separate through the two first driving devices. The pipe falls onto the two supporting plates 24. The two supporting plates 24 and the blanking plate 23 are also inclined. The pipe rolls along the two supporting plates 24 onto the blanking plate 23 for temporary storage.

[0034] When the two second sliders 42 move, they respectively drive the two sawtooth bars 75 to move synchronously. Taking one of the sawtooth bars 75 as an example, since the elastic rod 72, the elastic ring 73 and the elastic sheet 74 are all made of elastic materials, the sawtooth bar 75 contacts the elastic sheet 74 when moving and drives the elastic sheet 74 to vibrate. The elastic sheet 74 transmits the vibration to the elastic rod 72 and the elastic ring 73, so that the elastic ring 73 can continue to vibrate when the second slider 42 and the spray tube 43 move. When the elastic ring 73 vibrates, it can drive the spray tube 43 to vibrate, so that the spray tube 43 can use vibration to promote the uniform flow of paint in the spray tube 43, while reducing the problem of paint contacting the inner wall of the spray tube 43 being retained due to low flow rate, and avoiding the situation where part of the paint adheres to the inner wall of the spray tube 43 for a long time and causes caking.

[0035] When the first slider 31 moves, it drives the slide 81 and the slide bar 82 above it to move synchronously. When the two first sliders 31 are separated from each other and are about to move into place, the triangular block 84 contacts the abutment rod 85, and the abutment rod 85 applies a reverse thrust to the triangular block 84 through the inclined surface of the triangular block 84, so that the triangular block 84 drives the slide bar 82 to move upward on the slide 81. When the abutment rod 85 does not contact the triangular block 84, the slide bar 82 is reset downward by the elastic force of the reset spring. After the slide bar 82 moves up, the grinding head 83 on the slide bar 82 contacts the conical end of the top pipe 33. At this time, the second driving device is started again, and the top pipe 33 rotates so that its conical end rubs on the grinding head 83, thereby removing the conical end of the top pipe 33 attached to the top pipe 33 during the previous spraying operation. The paint is polished clean to avoid the accumulation of a layer of paint on the tapered end of the top pipe 33 after the top pipe 33 is used for a long time, resulting in uneven surface thickness, thereby affecting the clamping effect; when the resistance rod 85 contacts the triangular block 84, the resistance rod 85 also contacts the air cylinder 87. After the air cylinder 87 is squeezed by the resistance rod 85, the air is injected into the liquid cylinder 86 through the air pipe 88. The liquid cylinder 86 is filled with a diluent. The liquid cylinder 86 injects the diluent into the flow channel 810 through the liquid pipe 89 through the positive pressure. Since the flow channel 810 runs through the contact surface between the grinding head 83 and the top pipe 33, a layer of diluent can be attached to the grinding head 83. When the grinding head 83 grinds the top pipe 33, the addition of the diluent can accelerate the dissolution and grinding of the coating, thereby optimizing the grinding effect.

[0036] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A pipeline inner wall spin coating device, comprising a mounting frame (1), a slide rail (11) is installed on the mounting frame (1), and a top frame (12) is connected to the top of the mounting frame (1), characterized in that, It further includes: A loading component (2) for loading and unloading. A rotating clamping component (3) for clamping the pipeline and driving the pipeline to rotate. A spraying component (4) for spraying the inner wall of the pipeline. An air knife (5) for drying the pipeline after spraying. The rotating clamping component (3) includes two first sliders (31), both of the two first sliders (31) are slidably connected to the slide rail (11), a driving seat (32) is installed on the first slider (31), a pipe jacking (33) is rotatably installed on the driving seat (32), and the two pipe jackings (33) are arranged in a mirror image. The spraying component (4) includes two mounting seats (41), both of the two mounting seats (41) are fixedly connected to the slide rail (11), a second slider (42) is slidably connected to the mounting seat (41), a spraying pipe (43) is connected through the second slider (42), and the two spraying pipes (43) respectively penetrate through the two driving seats (32) and the two pipe jackings (33).

2. The spin coating device for the inner wall of a pipeline according to claim 1, characterized in that: A first driving device is arranged inside the first slider (31), and the first driving device is used to drive the first slider (31) to move on the slide rail (11). A second driving device is arranged on the driving seat (32), and the second driving device is used to drive the pipe jacking (33) to rotate on the driving seat (32).

3. The spin coating device for the inner wall of a pipeline according to claim 1, characterized in that: A third driving device is arranged on the mounting seat (41), and the third driving device is used to drive the second slider (42) to move on the mounting seat (41). A peristaltic pump is arranged on the mounting frame (1), and the peristaltic pump is used to convey the coating material. The two spraying pipes (43) are both connected to the peristaltic pump through pipelines.

4. A pipeline inner wall spin coating device according to claim 1, characterized in that: The loading component (2) includes a loading plate (21) and an unloading plate (23), both the loading plate (21) and the unloading plate (23) are fixedly installed on the mounting frame (1), the loading plate (21) and the unloading plate (23) are respectively located on both sides of the slide rail (11), two lifting seats (22) are installed on the slide rail (11), two supporting plates (24) are connected to the unloading plate (23), a telescopic lifting block is arranged on the lifting seat (22), the lifting block is driven by a cylinder, and a sensor (25) is installed on the mounting frame (1).

5. The spin coating device for the inner wall of a pipeline according to claim 1, wherein: The air knife (5) is fixedly installed on the top frame (12), an air pump is arranged on the mounting frame (1), the air pump is used to convey air, the air knife (5) is connected to the air pump through a pipeline, and a heating device is arranged on the air pump.

6. The spin coating device for the inner wall of a pipeline according to claim 1, wherein: An exhaust part (6) is arranged on the driving seat (32), the exhaust part (6) includes a housing (61), the housing (61) is fixedly connected to the driving seat (32), the spraying pipe (43) penetrates through the housing (61), an exhaust channel (62) is opened inside the housing (61), a through hole is arranged inside the driving seat (32), the exhaust channel (62) is connected to the through hole of the driving seat (32), and an exhaust interface (63) is installed on the top of the housing (61), and one of the exhaust interfaces (63) is connected to an external air extraction pump.

7. The spin coating device for the inner wall of a pipeline according to claim 2, wherein: A vibration part (7) is arranged on the sliding rail (11). The vibration part (7) includes two portal frames (71). Both of the two portal frames (71) are fixedly installed on the sliding rail (11). The two portal frames (71) are respectively located between two first sliders (31) and two mounting seats (41). An elastic rod (72) is installed on the portal frame (71). An elastic ring (73) is connected to the elastic rod (72). The spraying pipe (43) penetrates through the elastic ring (73). An elastic piece (74) is connected to the elastic rod (72). On one side where the two second sliders (42) are close to each other, a sawtooth rack (75) is fixedly connected. When moving, the two elastic pieces (74) respectively contact the two sawtooth racks (75).

8. A pipeline inner wall spin coating device according to claim 7, characterized in that: A polishing part (8) is arranged on the first slider (31). The polishing part (8) includes a sliding seat (81). The sliding seat (81) is fixedly connected to the first slider (31). A sliding rod (82) is slidably connected to the sliding seat (81). A grinding head (83) is installed on the sliding rod (82). A triangular block (84) is connected to the bottom of the sliding rod (82). A return spring is arranged between the sliding rod (82) and the sliding seat (81). A contact rod (85) is fixedly connected to the portal frame (71). A through groove is arranged at the bottom of the first slider (31). The contact rod (85) penetrates through the through groove of the first slider (31). When moving, the triangular block (84) contacts the contact rod (85). When moving, the two grinding heads (83) respectively contact the ends of the two top pipes (33).

9. A pipeline inner wall spin coating device according to claim 8, characterized in that: A liquid cylinder (86) is installed on the outer wall of the sliding rod (82). An air cylinder (87) is fixedly connected to the outer wall of the liquid cylinder (86). When the contact rod (85) moves, it contacts the air cylinder (87). An air pipe (88) is connected between the air cylinder (87) and the liquid cylinder (86). A flow channel (810) is arranged in the grinding head (83). A liquid pipe (89) is connected to the liquid cylinder (86). One end of the liquid pipe (89) far from the liquid cylinder (89) is connected to the flow channel (810).

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