Plastic coated steel pipe surface coating removal apparatus

Abstract

The utility model discloses a coating removal equipment technical field's plastic coated steel pipe surface coating removal equipment, include: mounting bracket, the top of mounting bracket is provided with steel pipe body, still include first drive unit. In the utility model, through setting up a steel pipe body at the top of mounting bracket, when using, the user first restricts steel pipe body in the top of mounting bracket through first drive unit, then passes through second drive unit drive and controls the rotation of polishing roller along the length of steel pipe body to move, makes polishing roller inserts steel pipe body inner wall and rotates when moving, finally controls steel pipe body rotation, can realize the cleaning of steel pipe body inner wall coating, in the process of cleaning, even if the coating fragment that has polished after or the coating that has not completely separated adheres on the inner wall, one end of two scrapers will also resist on the inner wall of steel pipe body and clean it.

Description

Technical Field

[0001] This utility model relates to the technical field of coating removal equipment, specifically a coating removal equipment for plastic-coated steel pipes. Background Technology

[0002] Plastic-coated steel pipe is a composite pipe with a corrosion-resistant, wear-resistant, or functional coating applied to the surface of a steel pipe through a specific process. It is widely used in water supply, gas, fire protection, chemical and other fields. Among them, the removal of the coating on the surface of plastic-coated steel pipe is an important process operation, which is usually used for old pipe repair, coating replacement or surface pretreatment.

[0003] Current coating removal equipment for plastic-coated steel pipes often removes the coating by grinding with a grinding roller. However, residual coating fragments or incompletely detached coatings adhere to the inner wall after grinding. For example, thin coatings have strong adhesion to the substrate, making them difficult to remove completely in one go; large coatings have a large area and uneven thickness, with edges that are prone to peeling up but the center still adheres. These coating residues affect the subsequent processing results. Therefore, a new type of coating removal equipment for plastic-coated steel pipes is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the problem that current coating removal equipment for plastic-coated steel pipes often removes the coating by grinding with a grinding roller. However, after grinding, residual coating fragments or incompletely detached coatings adhere to the inner wall. For example, thin coatings have strong adhesion to the substrate, making them difficult to remove completely in one go during grinding; large coatings have a large area, uneven thickness, and the edges are prone to peeling up while the center remains attached. These coating residues affect the subsequent processing results. This invention provides a coating removal device.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution: A coating removal device includes: a mounting frame, a steel pipe body disposed above the mounting frame, and a first driving unit for limiting the position of the steel pipe body and controlling the rotation of the steel pipe body. A grinding roller is disposed on the inner wall of the steel pipe body, and scrapers are disposed on both sides of the grinding roller. It also includes a second driving unit and a first limiting unit. The second driving unit is used to drive the grinding roller to rotate while simultaneously driving the grinding roller to move along the length of the steel pipe body. The first limiting unit is used to limit the position of the two scrapers on both sides of the grinding roller.

[0006] Furthermore, the first drive unit includes a slot opened at the top of the mounting frame, two drive wheels rotatably mounted on the inner wall of the slot, a first motor fixedly mounted at one end of the mounting frame, the output end of the first motor fixedly mounted at one end of one of the drive wheels and electrically connected to a controller fixedly mounted on the surface of the mounting frame, a pressure roller provided above the steel pipe body, and a lifting unit is also included, the lifting unit being used to control the spatial height of the pressure roller.

[0007] Furthermore, the lifting unit includes a lifting frame fixedly installed on the top of the mounting frame, a first hydraulic rod fixedly inserted into the surface of the lifting frame, a fixed frame fixedly installed at one end of the first hydraulic rod, the pressure roller being rotatably installed on the inner wall of the fixed frame, and the first hydraulic rod being electrically connected to the controller.

[0008] Furthermore, the second drive unit includes a second hydraulic rod fixedly mounted on the top of the mounting frame, a movable frame fixedly mounted on one end of the second hydraulic rod, a second motor fixedly mounted on the surface of the movable frame, the second motor being electrically connected to the controller, and a connection unit for connecting the output end of the second motor to one end of the grinding roller.

[0009] Furthermore, the connecting unit includes a rotating chamber rotatably mounted on the surface of the movable frame, an insert block fixedly mounted on one end of the grinding roller, the surface of the insert block slidably inserted into the inner wall of the rotating chamber, the output end of the second motor fixedly mounted on one end of the rotating chamber, and a second limiting unit for limiting the position of the insert block on the inner wall of the rotating chamber.

[0010] Furthermore, the second limiting unit includes a T-shaped rod that is slidably inserted into the surface of the rotating chamber, and an abutting nut is threaded onto the surface of the T-shaped rod.

[0011] Furthermore, the first limiting unit includes two T-shaped protrusions respectively disposed at one end of the two scrapers. The surfaces of the two T-shaped protrusions are rotatably inserted into the surface of the movable frame, and springs are slidably sleeved on the surfaces of the two springs. One end of each spring is fixedly installed on the surface of the two T-shaped protrusions, and the other end of each spring is fixedly installed on the surface of the movable frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, by setting a steel pipe body above the mounting frame, during use, the user first restricts the steel pipe body above the mounting frame through the first drive unit, and then drives the grinding roller to rotate through the second drive unit while controlling the grinding roller to move along the length of the steel pipe body, so that the grinding roller is inserted into the inner wall of the steel pipe body and rotates at the same time. Finally, the steel pipe body is controlled to rotate, so as to clean the coating on the inner wall of the steel pipe body. During the cleaning process, even if there are coating fragments or coatings that have not completely detached after grinding adhere to the inner wall, one end of the two scrapers will also abut against the inner wall of the steel pipe body to clean them.

[0013] 2. In this utility model, a T-shaped protrusion is provided at one end of each of the two scrapers, and the surfaces of the two T-shaped protrusions are rotatably inserted into the surface of the movable frame. Springs are slidably sleeved on the surfaces of the two T-shaped protrusions. During use, since one end of each spring is fixedly installed on the surface of the movable frame and the other end is fixedly installed on the surfaces of the two T-shaped protrusions respectively, the two scrapers are subjected to a force that keeps them in place under the action of the two torsion springs. Thus, during the scraping of the inner wall of the steel pipe body, both scrapers will abut against the inner wall of the steel pipe body, ensuring the effect of coating removal. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 3 This utility model Figure 2 Enlarged view of A in the middle; Figure 4 This is a half-sectional view of the present invention; Figure 5 This utility model Figure 4 A magnified view of B in the middle.

[0015] In the diagram: 1. Mounting frame; 2. Steel pipe body; 3. First drive unit; 31. Groove; 32. Drive wheel; 33. First motor; 34. Controller; 35. Pressure roller; 36. Lifting unit; 361. Lifting frame; 362. First hydraulic rod; 363. Fixed frame; 4. Grinding roller; 5. Scraper; 6. Second drive unit; 61. Second hydraulic rod; 62. Moving frame; 63. Second motor; 64. Connecting unit; 641. Rotating chamber; 642. Insert block; 643. Second limiting unit; 6431. T-shaped rod; 6432. Contact nut; 7. First limiting unit; 71. T-shaped protrusion; 72. Spring. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0017] The surface coating removal equipment for plastic-coated steel pipes provided in this embodiment is mainly used to solve the problem that current surface coating removal equipment for plastic-coated steel pipes often removes the coating by grinding with a grinding roller. However, after grinding, residual coating fragments or incompletely detached coatings adhere to the inner wall. For example, thin coatings have strong adhesion to the substrate and are difficult to remove completely in one go during grinding; large coatings have a large area, uneven thickness, and the edges are prone to peeling up while the center remains attached. These coating residues affect the subsequent process results. The following technical solution is provided, which will be combined with... Figures 1-5 Please provide a detailed explanation: A coating removal device for plastic-coated steel pipes includes: a mounting frame 1 with a steel pipe body 2 mounted on top. In use, the user first uses a first drive unit 3 to position the steel pipe body 2 above the mounting frame 1. Then, a second drive unit 6 controls the grinding roller 4, located on the inner wall of the steel pipe body 2, to rotate and move forward simultaneously. At the same time, the first drive unit 3 controls the rotation of the steel pipe body 2, thus achieving rapid grinding of the inner wall of the steel pipe body 2. During this process, scrapers 5, restricted to both sides of the grinding roller 4 by a first limiting unit 7, simultaneously scrape the inner wall of the steel pipe body 2, thereby achieving both grinding of the inner wall of the steel pipe body 2 and removal of residual grinding debris. The main components of the first drive unit 3 are... The slot 31 on the top of the mounting frame 1 allows the user to place the steel pipe body 2 on the surface of two drive wheels 32, which are rotatably mounted on the inner wall of the slot 31. The lifting unit 36 ​​then controls the lifting of the pressure roller 35 positioned above the steel pipe body 2, causing the surface of the pressure roller 35 to adhere to the surface of the steel pipe body 2. Finally, the controller 34, fixedly mounted on the surface of the mounting frame 1, controls the output end of the first motor 33, which is fixedly mounted at one end of the mounting frame 1, to rotate. This drives the drive wheel 32, which is fixedly mounted on the output end of the first motor 33, to rotate, thus limiting and driving the steel pipe body 2 above the mounting frame 1. The main component of the second drive unit 6 is a second hydraulic rod 6 fixedly mounted on the top of the mounting frame 1. 1. In use, the user controls the extension and retraction of the second hydraulic rod 61 via the controller 34, which in turn moves the movable frame 62 fixedly installed at one end of the second hydraulic rod 61. Since a second motor 63 is fixedly installed on the surface of the movable frame 62, the user first connects one end of the grinding roller 4 to the output end of the second motor 63 via the connecting unit 64. After the movable frame 62 is inserted into the inner wall of the steel pipe body 2, the user can control the output end of the second motor 63 to rotate via the controller 34, thereby driving the grinding roller 4 to rotate, achieving a more thorough cleaning of the coating on the inner wall of the steel pipe body 2 during the rotation process. The main components of the first limiting unit 7 are: two springs 72, and both are located at one end of the two scrapers 5. The steel pipe body 2 is equipped with T-shaped protrusions 71. Since the surfaces of the two T-shaped protrusions 71 are rotatably inserted into the surface of the movable frame 62, and the two springs 72 are respectively slidably sleeved on the surfaces of the two T-shaped protrusions 71, one end of the two springs 72 is fixedly installed on the surface of the two T-shaped protrusions 71, and the other end of the two springs 72 is fixedly installed on the surface of the movable frame 62, the inner wall of the steel pipe body 2 will be continuously scraped by the two scrapers 5 during the rotation process (the two scrapers 5 are always in contact with the inner wall of the steel pipe body 2 under the elastic force of the two springs 72). It should be noted that the grinding roller 4 has a variety of diameters, and users can replace the grinding roller 4 with different diameters to grind the inner wall of the steel pipe body 2 with different diameters.

[0018] By setting a steel pipe body 2 above the mounting frame 1, during use, the user first restricts the steel pipe body 2 above the mounting frame 1 through the first drive unit 3, and then drives the grinding roller 4 to rotate through the second drive unit 6 while controlling the grinding roller 4 to move along the length of the steel pipe body 2, so that the grinding roller 4 is inserted into the inner wall of the steel pipe body 2 and rotates at the same time. Finally, the steel pipe body 2 is controlled to rotate, so as to clean the coating on the inner wall of the steel pipe body 2. During the cleaning process, even if there are coating fragments or coatings that have not completely detached after grinding adhere to the inner wall, one end of the two scrapers 5 will also abut against the inner wall of the steel pipe body 2 to clean them.

[0019] By setting a T-shaped protrusion 71 at one end of each of the two scrapers 5, and having the surfaces of the two T-shaped protrusions 71 rotatably inserted into the surface of the movable frame 62, and having springs 72 slidably sleeved on the surfaces of the two T-shaped protrusions 71, during use, since one end of each spring 72 is fixedly installed on the surface of the movable frame 62 and the other end is respectively fixedly installed on the surfaces of the two T-shaped protrusions 71, during use, under the action of the two torsion springs, both scrapers 5 are subjected to a force that keeps them in place. Thus, during the scraping of the inner wall of the steel pipe body 2, both scrapers 5 will abut against the inner wall of the steel pipe body 2, ensuring the effect of coating removal.

[0020] like Figure 1 As shown, in some embodiments, the main components of the lifting unit 36 ​​are: a fixed frame 363, and a pressure roller 35 rotatably mounted on the inner wall of the fixed frame 363. Since a lifting frame 361 is fixedly mounted on the top of the mounting frame 1, and a first hydraulic rod 362 is fixedly inserted into the surface of the lifting frame 361, the user can control the extension and retraction of the first hydraulic rod 362 through the controller 34, thereby driving the fixed frame 363 fixedly mounted on one end of the first hydraulic rod 362 to rise and fall, thereby realizing the control of the height of the pressure roller 35.

[0021] like Figure 3As shown, in some embodiments, the main components of the connecting unit 64 are: an insert 642 fixedly installed at one end of the grinding roller 4, a rotating chamber 641 rotatably installed on the surface of the mounting frame 1, and the output end of the second motor 63 fixedly installed at one end of the rotating chamber 641. In use, the user first inserts the insert 642 into the inner wall of the rotating chamber 641, and then limits the position of the insert 642 on the inner wall of the rotating chamber 641 by the second limiting unit 643, thereby realizing the installation of the grinding roller 4 at the output end of the second motor 63. The main component of the second limiting unit 643 is an abutment nut 6432. In use, the user first slides and inserts a T-shaped rod 6431 on the surface of the rotating chamber 641, so that the surface of the T-shaped rod 6431 is simultaneously inserted into the surface of the insert 642, and finally threadedly sleeves the abutment nut 6432 onto the surface of the T-shaped rod 6431, thereby limiting the position of the insert 642 on the inner wall of the rotating chamber 641.

[0022] The working process of this utility model is as follows: First, the user needs to control the extension and retraction of the first hydraulic rod 362 through the controller 34, which drives the fixed frame 363 to rise and place the steel pipe body 2 on the surface of the two drive wheels 32. Then, the user controls the extension and retraction of the second hydraulic rod 61 through the controller 34, which drives the moving frame 62, so that the grinding roller 4 is inserted into the inner wall of the steel pipe body 2. The user can then control the output end of the first motor 33 to rotate through the controller 34, thereby driving the two drive wheels 32 and the steel pipe body 2, and further grinding the inner wall of the steel pipe body 2. Secondly, during the grinding process, one end of each of the two scrapers 5 is in contact with the inner wall of the steel pipe body 2, thereby achieving rapid cleaning of the inner wall of the steel pipe body 2 (the coating fragments that have been ground off are scraped off by the two scrapers 5).

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A coating removal device for plastic-coated steel pipes, characterized in that, include: Mounting frame (1), a steel pipe body (2) is provided above the mounting frame (1), and a first driving unit (3) is also provided. The first driving unit (3) is used to limit the position of the steel pipe body (2) and control the rotation of the steel pipe body (2). A grinding roller (4) is provided on the inner wall of the steel pipe body (2), and scrapers (5) are provided on both sides of the grinding roller (4). It also includes a second driving unit (6) and a first limiting unit (7). The second driving unit (6) is used to drive the grinding roller (4) to rotate while driving the grinding roller (4) to move along the length of the steel pipe body (2). The first limiting unit (7) is used to limit the position of the two scrapers (5) on both sides of the grinding roller (4).

2. The coating removal equipment for plastic-coated steel pipes according to claim 1, characterized in that: The first drive unit (3) includes a slot (31) opened on the top of the mounting frame (1). Two drive wheels (32) are rotatably installed on the inner wall of the slot (31). A first motor (33) is fixedly installed at one end of the mounting frame (1). The output end of the first motor (33) is fixedly installed at one end of one of the drive wheels (32) and electrically connected to a controller (34) fixedly installed on the surface of the mounting frame (1). A pressure roller (35) is provided above the steel pipe body (2). The unit also includes a lifting unit (36), which is used to control the spatial height of the pressure roller (35).

3. The coating removal equipment for plastic-coated steel pipes according to claim 2, characterized in that: The lifting unit (36) includes a lifting frame (361) fixedly installed on the top of the mounting frame (1). A first hydraulic rod (362) is fixedly inserted into the surface of the lifting frame (361). A fixed frame (363) is fixedly installed at one end of the first hydraulic rod (362). The pressure roller (35) is rotatably installed on the inner wall of the fixed frame (363). The first hydraulic rod (362) is electrically connected to the controller (34).

4. The coating removal equipment for plastic-coated steel pipes according to claim 3, characterized in that: The second drive unit (6) includes a second hydraulic rod (61) fixedly installed on the top of the mounting frame (1), a movable frame (62) fixedly installed at one end of the second hydraulic rod (61), a second motor (63) fixedly installed on the surface of the movable frame (62), the second motor (63) being electrically connected to the controller (34), and also includes a connection unit (64) for connecting the output end of the second motor (63) and one end of the grinding roller (4).

5. The coating removal equipment for plastic-coated steel pipes according to claim 4, characterized in that: The connecting unit (64) includes a rotating chamber (641) rotatably mounted on the surface of the movable frame (62), a plug (642) is fixedly mounted on one end of the grinding roller (4), the surface of the plug (642) is slidably inserted into the inner wall of the rotating chamber (641), the output end of the second motor (63) is fixedly mounted on one end of the rotating chamber (641), and also includes a second limiting unit (643), which is used to limit the position of the plug (642) on the inner wall of the rotating chamber (641).

6. The coating removal equipment for plastic-coated steel pipes according to claim 5, characterized in that: The second limiting unit (643) includes a T-shaped rod (6431) that is slidably inserted into the surface of the rotating chamber (641), and the surface of the T-shaped rod (6431) is threaded with an abutment nut (6432).

7. The coating removal equipment for plastic-coated steel pipes according to claim 4, characterized in that: The first limiting unit (7) includes two T-shaped protrusions (71) respectively disposed at one end of the two scrapers (5). The surfaces of the two T-shaped protrusions (71) are rotatably inserted into the surface of the movable frame (62) and springs (72) are slidably sleeved on the surfaces of the two springs (72). One end of the two springs (72) is fixedly installed on the surface of the two T-shaped protrusions (71), and the other end of the two springs (72) is fixedly installed on the surface of the movable frame (62).

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