Precise control device for thicknesses of epoxy 3PE coatings inside and outside anti-corrosion pipeline

Abstract

The utility model relates to the technical field of anti-corrosion pipelines, in particular to an anti-corrosion pipeline inner and outer epoxy 3PE coating thickness accurate control device which comprises a first moving frame, a second moving frame, a first supporting frame and a second supporting frame. The first supporting frame and the second supporting frame are installed on the left side and the right side of the rear end of the first moving frame correspondingly, ball screw linear modules are fixedly installed at the bottom of the first moving frame and the bottom of the second moving frame correspondingly, and a to-be-machined pipeline is erected at the top of the first moving frame. Compared with an existing spraying mode of an epoxy 3PE coating inside and outside an anti-corrosion pipeline, the spraying device can evenly conduct epoxy 3PE anti-corrosion spraying on the inside and outside of the anti-corrosion pipeline through the design, accurately control the thickness of the epoxy 3PE coating inside and outside the anti-corrosion pipeline and automatically spray the epoxy 3PE coating on the inside and outside of the anti-corrosion pipeline at the same time, and the spraying efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-corrosion pipelines, and in particular to a device for accurately controlling the thickness of epoxy 3PE coatings inside and outside anti-corrosion pipelines. Background Art

[0002] 3PE anti-corrosion is the abbreviation of three-layer polyethylene anti-corrosion coating, which is composed of an outer layer of polyethylene, a middle layer of adhesive, and an inner layer of epoxy powder, forming an organic high-performance anti-corrosion coating. It is currently widely used at home and abroad and is the mainstream pipeline anti-corrosion process.

[0003] At present, the spraying process of anti-corrosion pipes is usually carried out by manual hand-held spray guns. However, the manual hand-held spray gun spraying method based on feeling has limited accuracy, and the thickness of the spraying inside and outside the anti-corrosion pipe cannot be accurately controlled. At the same time, the spraying of the inner walls of some large-diameter anti-corrosion pipes mostly adopts the method of manual entry. This method belongs to confined space operation, which is difficult and dangerous for personnel to operate, and is not efficient. Moreover, this method is not suitable for steel pipes whose inner diameter does not meet the requirements for personnel entry, and has great limitations.

[0004] Therefore, it is particularly important to design a precise control device for the thickness of the epoxy 3PE coating inside and outside the anti-corrosion pipeline to solve the above defects. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model designs a precise control device for the thickness of epoxy 3PE coatings inside and outside the anti-corrosion pipeline. The device aims to solve the technical problems that the manual hand-held spray gun spraying method based on feeling has limited accuracy under the prior art, the thickness of the spraying on the inside and outside of the anti-corrosion pipeline cannot be accurately controlled, and when spraying the inner wall of the anti-corrosion pipeline, the operation is difficult and dangerous in confined space, the efficiency is low, and this method is not suitable for steel pipes whose inner diameter does not meet the requirements for personnel entry, and has great limitations.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A device for accurately controlling the thickness of epoxy 3PE coatings inside and outside anti-corrosion pipelines comprises a first movable frame, a second movable frame, a first supporting frame and a second supporting frame, wherein the second movable frame is installed behind the first movable frame, the first supporting frame and the second supporting frame are respectively installed on the left and right sides of the rear end of the first movable frame, the bottoms of the first movable frame and the second movable frame are fixedly installed with ball screw linear module groups, the top of the first movable frame is provided with a pipeline to be processed, the inner side of the pipeline to be processed is installed with an inner wall spraying robot, the top of the second movable frame is fixedly installed with a spray gun, the first supporting frame and the second supporting frame are both rotatably connected to a turntable on the side opposite to the top end, the first motor is fixedly installed on the top end of the second supporting frame, the driving end of the first motor is fixedly connected to the turntable, and the two groups of pipeline positioning mechanisms are fixedly installed on the side opposite to the turntable.

[0008] As a preferred solution of the utility model, first hydraulic cylinders are fixedly installed on the left and right ends of the top of the first movable frame, arc-shaped brackets are fixedly installed on the tops of the two groups of the first hydraulic cylinders, and the pipeline to be processed is mounted on the inner side of the two groups of arc-shaped brackets.

[0009] As a preferred solution of the utility model, a second hydraulic cylinder is fixedly installed on the top of the second movable frame, and the spray gun is fixedly installed on the top of the second hydraulic cylinder.

[0010] As a preferred solution of the utility model, the inner wall spraying robot includes a mounting frame placed on the inner side of the pipe to be processed, a double-headed motor is fixedly installed in the middle of the mounting frame, the left and right ends of the double-headed motor are fixedly connected with a one-way threaded rod, the opposite ends of the two groups of one-way threaded rods are threadedly connected with connecting sleeves, the left and right ends of the mounting frame are rotatably connected with three groups of inner support plates, the connecting sleeves and the multiple groups of inner support plates are connected by transmission rods, a spraying pipe is fixedly installed on the outer side of the mounting frame, and the left end of the spraying pipe is fixedly connected to a spray head.

[0011] As a preferred solution of the utility model, the outer side of the connecting sleeve is slidably connected to the mounting frame through an auxiliary frame, and the ends of the two groups of one-way threaded rods that are away from each other are rotationally connected to the auxiliary frame, and the thread directions of the two groups of one-way threaded rods are opposite.

[0012] As a preferred solution of the utility model, the inner support plate is rotatably connected to the roller at one end away from the mounting frame, and a second motor is fixedly installed on the outer side of one group of inner support plates at the left and right ends of the mounting frame, the driving end of the second motor is meshed with the roller through a bevel gear, the two ends of the transmission rod are respectively rotatably connected to the connecting sleeve and the inner support plate, and a plurality of spray holes are evenly spaced on the outer side of the spray head.

[0013] As a preferred solution of the utility model, the pipeline positioning mechanism includes a bidirectional threaded rod rotatably connected to the opposite sides of the two groups of turntables, and the upper and lower ends of the two groups of bidirectional threaded rods are threadedly connected with a movable plate, and the end of the movable plate close to the turntable is slidably connected to the turntable through a slide groove, and the end of the movable plate away from the bidirectional threaded rod is fixedly installed with an internal fixed plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the utility model, through the coordinated design of the first moving frame and the inner wall spraying robot, when the 3PE anti-corrosion spraying is performed on the processing pipeline, it is first set up on the inner side of the two groups of arc-shaped brackets, and the mounting frame is first placed on the inner side of the processing pipeline, and then the mounting frame is moved to the leftmost end of the inner side of the processing pipeline, so that the spray head is located at the pipe mouth of the left end of the processing pipeline, and the 3PE coating is introduced through the spray pipe, and the 3PE coating is sprayed through the multiple groups of spray holes on the outer side of the spray head, and then the mounting frame is moved to the right at a uniform speed until it is about to reach the pipe mouth of the right end of the processing pipeline, and then the mounting frame is slowly moved out horizontally by hand, so that the inner side of the processing pipeline is evenly sprayed by the spray head, so as to accurately control the thickness of the 3PE anti-corrosion coating on the inner side of the processing pipeline.

[0016] 2. In the utility model, through the coordinated design of the second moving frame, the first support frame, the second support frame, the spray gun, the turntable, the first motor and the pipeline positioning mechanism, after waiting for the 3PE anti-corrosion coating on the inner wall to be air-dried, the pipeline to be processed is moved between the first support frame and the second support frame, and then the pipeline to be processed is raised, and then the first support frame and the second support frame are pushed close to the left and right ends of the pipeline to be processed respectively, and the left and right ends of the pipeline to be processed are fixed by the pipeline positioning mechanism, and then the first motor is started to drive the turntable to rotate, thereby driving the pipeline to be processed to rotate, and at the same time, the ball screw linear module is used to drive the second moving frame to move left and right, and as the pipeline to be processed rolls, the spray gun on the second moving frame is used to evenly spray the outside of the pipeline to be processed, so as to accurately control the thickness of the PE anti-corrosion coating on the outside of the pipeline to be processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the ball screw linear module of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the inner wall spraying robot of the utility model;

[0020] Figure 4 This is a schematic diagram of the outer structure of the mounting frame of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the pipeline positioning mechanism of the utility model.

[0022] In the figure: 1. first moving frame; 101. first hydraulic cylinder; 102. arc bracket; 2. second moving frame; 201. second hydraulic cylinder; 3. first supporting frame; 4. second supporting frame; 5. ball screw linear module; 6. pipeline to be processed; 7. inner wall spraying robot; 701. mounting frame; 702. double-headed motor; 703. one-way threaded rod; 704. connecting sleeve; 705. inner support plate; 706. transmission rod; 707. spraying pipe; 708. spraying head; 709. auxiliary frame; 710. roller; 711. second motor; 712. bevel gear; 8. spray gun; 9. turntable; 10. first motor; 11. pipeline positioning mechanism; 1101. two-way threaded rod; 1102. moving plate; 1103. slide groove; 1104. inner fixed plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] Example:

[0025] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0026] A device for precisely controlling the thickness of epoxy 3PE coatings inside and outside anti-corrosion pipelines comprises a first movable frame 1, a second movable frame 2, a first support frame 3 and a second support frame 4. The second movable frame 2 is installed at the rear of the first movable frame 1, and the first support frame 3 and the second support frame 4 are respectively installed at the left and right sides of the rear end of the first movable frame 1. Ball screw linear module groups 5 are fixedly installed at the bottoms of the first movable frame 1 and the second movable frame 2. A pipeline to be processed 6 is mounted on the top of the first movable frame 1, and an inner wall spraying robot 7 is installed on the inner side of the pipeline to be processed 6. A spraying gun 8 is fixedly installed on the top of the second movable frame 2. A turntable 9 is rotatably connected to the opposite side of the top of the first support frame 3 and the second support frame 4. A first motor 10 is fixedly installed at the top of the second support frame 4, and the driving end of the first motor 10 is fixedly connected to the turntable 9. A pipeline positioning mechanism 11 is fixedly installed on the opposite side of the two sets of turntables 9.

[0027] First, the first hydraulic cylinders 101 are fixedly installed on the left and right ends of the top of the first movable frame 1, and the tops of the two groups of first hydraulic cylinders 101 are fixedly installed with arc brackets 102. The pipeline 6 to be processed is erected on the inner side of the two groups of arc brackets 102. When 3PE anti-corrosion spraying is performed on the pipeline 6 to be processed, it is first erected on the inner side of the two groups of arc brackets 102, and then the inner wall spraying robot 7 is extended into the inner side of the pipeline 6 to be processed, and 3PE anti-corrosion spraying is performed on the inner wall of the pipeline.

[0028] Furthermore, a second hydraulic cylinder 201 is fixedly installed on the top of the second movable frame 2, and a spray gun 8 is fixedly installed on the top of the second hydraulic cylinder 201. After 3PE anti-corrosion spraying is performed on the inner wall of the pipe 6 to be processed, wait for the 3PE anti-corrosion coating to be air-dried, and then use the ball screw linear module 5 to push the first movable frame 1 to between the first support frame 3 and the second support frame 4, and then start the first hydraulic cylinder 101 to raise the pipe 6 to be processed, so that the pipe positioning mechanism 11 on the first support frame 3 and the second support frame 4 can position and fix the two ends of the pipe 6 to be processed, and then start the first motor 10 to drive the turntable 9 to rotate, thereby driving the pipe 6 to be processed to rotate, and at the same time use the ball screw linear module 5 to drive the second movable frame 2 to move left and right. As the pipe 6 to be processed rolls, the spray gun 8 on the second movable frame 2 is used to evenly spray the outer side of the pipe 6 to be processed, so as to accurately control the thickness of the 3PE anti-corrosion coating on the outer side of the pipe 6 to be processed.

[0029] Then, the inner wall spraying robot 7 includes a mounting frame 701 placed on the inner side of the pipe 6 to be processed, a double-headed motor 702 is fixedly installed in the middle of the mounting frame 701, and the left and right ends of the double-headed motor 702 are fixedly connected with a one-way threaded rod 703, and the opposite ends of the two groups of one-way threaded rods 703 are threadedly connected with a connecting sleeve 704, and the left and right ends of the mounting frame 701 are rotatably connected with three groups of inner support plates 705, and the connecting sleeve 704 and the multiple groups of inner support plates 705 are connected by a transmission rod 706, and a spray pipe 707 is fixedly installed on the outer side of the mounting frame 701, and a spray head 708 is fixedly connected to the left end of the spray pipe 707. When 3PE anti-corrosion spraying is performed on the inner wall of the pipe 6 to be processed, the mounting frame 701 is first placed on the inner side of the pipe 6 to be processed, and then the mounting frame 701 is moved to the leftmost end of the inner side of the pipe 6 to be processed, so that the spray head 708 is located at the pipe mouth at the left end of the pipe 6 to be processed.

[0030] Furthermore, the outer side of the connecting sleeve 704 is slidably connected to the mounting frame 701 through the auxiliary frame 709, and the ends of the two groups of one-way threaded rods 703 that are away from each other are rotationally connected to the auxiliary frame 709. The thread directions of the two groups of one-way threaded rods 703 are opposite. After the mounting frame 701 is placed on the inner side of the pipe 6 to be processed, the double-headed motor 702 is started to drive the one-way threaded rods 703 to rotate, so that the two groups of connecting sleeves 704 move relative to each other. At the same time, the connecting sleeves 704 slide on the inner side of the mounting frame 701 to ensure the stability of movement.

[0031] Secondly, the inner support plate 705 is rotatably connected to the roller 710 at one end away from the mounting frame 701, and the outer side of one group of inner support plates 705 at the left and right ends of the mounting frame 701 is fixedly installed with a second motor 711, the driving end of the second motor 711 is meshed with the roller 710 through a bevel gear 712, and the two ends of the transmission rod 706 are rotatably connected to the connecting sleeve 704 and the inner support plate 705 respectively. A plurality of spray holes are evenly spaced on the outer side of the spray head 708. When the connecting sleeve 704 moves, the plurality of inner support plates 705 are gradually spread open under the transmission of the transmission rod 706 until the plurality of rollers 710 contact the inner wall of the pipe 6 to be processed, and then the second motor 711 is started. The machine 711 drives the roller 710 to rotate under the transmission of the bevel gear 712, thereby moving the spray head 708 to the pipe mouth at the left end of the pipe to be processed 6, and introducing the 3PE coating through the spray pipe 707. The 3PE coating is sprayed out through multiple groups of spray holes on the outside of the spray head 708, and then the driving roller 710 rotates to drive the mounting frame 701 to move right at a uniform speed until it is about to reach the pipe mouth at the right end of the pipe to be processed 6. The mounting frame 701 is slowly moved out horizontally by hand, so that the inner side of the pipe to be processed 6 is evenly sprayed through the spray head 708, so that the thickness of the 3PE anti-corrosion coating on the inner side of the pipe to be processed 6 is accurately controlled.

[0032] Finally, the pipeline positioning mechanism 11 includes a bidirectional threaded rod 1101 rotatably connected to the opposite sides of the two groups of turntables 9, and the upper and lower ends of the two groups of bidirectional threaded rods 1101 are threadedly connected with a moving plate 1102, and the end of the moving plate 1102 close to the turntable 9 is slidably connected to the turntable 9 through a slide groove 1103, and the end of the moving plate 1102 away from the bidirectional threaded rod 1101 is fixedly installed with an inner fixed plate 1104. When the outer side of the pipeline 6 to be processed is sprayed with 3PE anti-corrosion, the first moving frame 1 is pushed to between the first support frame 3 and the second support frame 4, and then the first hydraulic cylinder 101 is started to raise the pipeline 6 to be processed, and then the first support frame 3 and the second support frame are pushed. The support frame 4 is respectively close to the left and right ends of the pipe 6 to be processed, and the bidirectional threaded rod 1101 is first rotated to drive the two groups of movable plates 1102 to move closer, so that the inner fixed plates 1104 on the two groups of movable plates 1102 can extend into the inner side of the pipe 6 to be processed, and then the first support frame 3 and the second support frame 4 are pushed respectively to extend the inner fixed plates 1104 into the inner side of the pipe 6 to be processed, and then the bidirectional threaded rod 1101 is rotated in the opposite direction to drive the two groups of movable plates 1102 to move away from each other, so that the inner fixed plates 1104 are fixed against the inner wall of the pipe 6 to be processed, and then the first motor 10 is started to drive the turntable 9 to rotate, and the outer side of the pipe 6 to be processed is evenly sprayed.

[0033] In this embodiment, the implementation scenario is specifically as follows: when the pipe 6 to be processed is subjected to 3PE anti-corrosion spraying, it is first set up on the inner side of the two groups of arc-shaped brackets 102, and the mounting frame 701 is first placed on the inner side of the pipe 6 to be processed, and then the mounting frame 701 is moved to the leftmost end of the inner side of the pipe 6 to be processed, so that the spray head 708 is located at the pipe mouth at the left end of the pipe 6 to be processed, and the 3PE coating is introduced through the spray pipe 707, and the 3PE coating is sprayed out through the multiple groups of spray holes on the outer side of the spray head 708, and then the mounting frame 701 is moved to the right at a uniform speed until it is about to reach the pipe mouth at the right end of the pipe 6 to be processed, and then the mounting frame 701 is slowly moved out horizontally by hand, so that the inner side of the pipe 6 to be processed is evenly sprayed by the spray head 708, and the 3PE anti-corrosion coating on the inner wall is waited for to dry, and then the first moving frame 1 is pushed to between the first support frame 3 and the second support frame 4 by the ball screw linear module 5, and then the first liquid The pressure cylinder 101 raises the pipe to be processed 6, and then pushes the first support frame 3 and the second support frame 4 to be close to the left and right ends of the pipe to be processed 6 respectively, and fixes the left and right ends of the pipe to be processed 6 through the pipe positioning mechanism 11, and then starts the first motor 10 to drive the turntable 9 to rotate, thereby driving the pipe to be processed 6 to rotate, and at the same time uses the ball screw linear module 5 to drive the second movable frame 2 to move left and right. As the pipe to be processed 6 rolls, the spray gun 8 on the second movable frame 2 is used to evenly spray the outside of the pipe to be processed 6. The whole operation process is simple and convenient. Compared with the existing spraying method of epoxy 3PE coating inside and outside the anti-corrosion pipe, the utility model can evenly perform epoxy 3PE anti-corrosion spraying on the inside and outside of the anti-corrosion pipe through design, accurately control the thickness of the epoxy 3PE coating inside and outside the anti-corrosion pipe, and automatically spray the epoxy 3PE coating on the inside and outside of the anti-corrosion pipe, thereby greatly improving the spraying efficiency.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for accurately controlling the thickness of epoxy 3PE coatings inside and outside anti-corrosion pipelines, comprising a first moving frame (1), a second moving frame (2), a first supporting frame (3) and a second supporting frame (4), characterized in that: The second movable frame (2) is installed at the rear of the first movable frame (1); the first support frame (3) and the second support frame (4) are respectively installed at the left and right sides of the rear end of the first movable frame (1); the bottoms of the first movable frame (1) and the second movable frame (2) are fixedly installed with ball screw linear module groups (5); the top of the first movable frame (1) is provided with a pipeline to be processed (6); the inner side of the pipeline to be processed (6) is provided with an inner wall spraying robot (7); the top of the second movable frame (2) is fixedly installed with a spraying gun (8); the first support frame (3) and the second support frame (4) are both rotatably connected to a turntable (9) on one side opposite to the top end; the top of the second support frame (4) is fixedly installed with a first motor (10); the driving end of the first motor (10) is fixedly connected to the turntable (9); and the two sets of the turntables (9) are both fixedly installed with a pipeline positioning mechanism (11) on one side opposite to the top end.

2. According to claim 1, a device for accurately controlling the thickness of epoxy 3PE coatings inside and outside anti-corrosion pipelines, characterized in that: First hydraulic cylinders (101) are fixedly mounted on both left and right ends of the top of the first movable frame (1), arc-shaped brackets (102) are fixedly mounted on the tops of the two groups of the first hydraulic cylinders (101), and the pipeline (6) to be processed is mounted on the inner sides of the two groups of arc-shaped brackets (102).

3. According to claim 1, a device for accurately controlling the thickness of epoxy 3PE coating inside and outside the anti-corrosion pipeline is characterized in that: A second hydraulic cylinder (201) is fixedly mounted on the top of the second movable frame (2), and the spray gun (8) is fixedly mounted on the top of the second hydraulic cylinder (201).

4. According to claim 1, a device for accurately controlling the thickness of epoxy 3PE coating inside and outside the anti-corrosion pipeline is characterized in that: The inner wall spraying robot (7) comprises a mounting frame (701) placed on the inner side of the pipe (6) to be processed, a double-headed motor (702) is fixedly mounted in the middle of the mounting frame (701), the left and right ends of the double-headed motor (702) are fixedly connected with a one-way threaded rod (703), the opposite ends of the two groups of one-way threaded rods (703) are threadedly connected with a connecting sleeve (704), the left and right ends of the mounting frame (701) are rotatably connected with three groups of inner support plates (705), the connecting sleeve (704) and the multiple groups of inner support plates (705) are connected by a transmission rod (706), and a spraying pipe (707) is fixedly mounted on the outer side of the mounting frame (701), and the left end of the spraying pipe (707) is fixedly connected with a spray head (708).

5. According to claim 4, a device for accurately controlling the thickness of epoxy 3PE coating inside and outside the anti-corrosion pipeline is characterized in that: The outer side of the connecting sleeve (704) is slidably connected to the mounting frame (701) via an auxiliary frame (709), and the ends of the two groups of one-way threaded rods (703) that are away from each other are rotationally connected to the auxiliary frame (709), and the thread directions of the two groups of one-way threaded rods (703) are opposite.

6. The device for accurately controlling the thickness of the epoxy 3PE coating inside and outside the anti-corrosion pipeline according to claim 4 is characterized in that: The inner support plate (705) is rotatably connected to one end of the mounting frame (701) with a roller (710), and a second motor (711) is fixedly installed on the outer side of one group of inner support plates (705) at the left and right ends of the mounting frame (701), and the driving end of the second motor (711) is meshed with the roller (710) through a bevel gear (712), and the two ends of the transmission rod (706) are rotatably connected to the connecting sleeve (704) and the inner support plate (705), respectively, and a plurality of spray holes are evenly spaced on the outer side of the spray head (708).

7. The device for accurately controlling the thickness of the epoxy 3PE coating inside and outside the anti-corrosion pipeline according to claim 1 is characterized in that: The pipeline positioning mechanism (11) comprises a bidirectional threaded rod (1101) rotatably connected to opposite sides of two groups of turntables (9); upper and lower ends of the two groups of bidirectional threaded rods (1101) are threadedly connected to movable plates (1102); one end of the movable plate (1102) close to the turntable (9) is slidably connected to the turntable (9) via a slide groove (1103); and one end of the movable plate (1102) away from the bidirectional threaded rod (1101) is fixedly mounted with an inner fixed plate (1104).

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