A grinding device for steel pipe rust removal

Abstract

The present application discloses a grinding device for rust removal of steel pipes, which relates to the technical field of rust removal of steel pipes, and comprises a rotating drive assembly for fixing the steel pipe and a pair of grinding assemblies arranged transversely and with adjustable spacing, wherein the rotating drive assembly is provided with a driving structure for driving the steel pipe to rotate circumferentially, the rotating drive assembly is provided with a center of two grinding assemblies, the rotating drive assembly can move longitudinally relative to the grinding assembly, the grinding assembly comprises a positioning wheel and a grinding wheel corresponding to the upper and lower surfaces of the steel pipe respectively, and the spacing between the two is adjustable, and the technical advantages of the present application are: the lateral position of the steel pipe is fixed by the rotating drive assembly, step-by-step grinding along the length direction of the steel pipe is achieved by transversely moving the grinding assembly, and circumferential grinding of the steel pipe at this position is achieved by controlling the circumferential rotation of the steel pipe by the rotating drive assembly; the outer peripheral surface of the grinding wheel is set to a grinding material, and the V-shaped profile can increase the contact area between it and the steel pipe for grinding.

Description

Technical Field

[0001] The present application relates to the technical field of steel pipe rust removal, and in particular to a grinding device for steel pipe rust removal. Background Art

[0002] In the complex oilfield development environment, especially in remote and space-constrained oil well areas, the maintenance and anti-corrosion of small-diameter pipelines are particularly important. These pipelines usually have diameters ranging from 60 to 15 inches, especially concentrated in the range of 60 to 108 inches. Due to the special size, higher requirements are placed on anti-corrosion treatment. In narrow underground wells, pipelines not only need to withstand high pressure and erosion from corrosive media, but also have to deal with physical wear during transportation. Therefore, anti-corrosion treatment of pipelines has become a key step to ensure safe, efficient and long-term operation. Traditional anti-corrosion treatment processes are often limited in efficiency when facing small-diameter pipelines, and it is difficult to achieve fine and uniform treatment. This not only affects the integrity and durability of the anti-corrosion layer, but may also increase the maintenance cycle and reduce the overall economic benefits.

[0003] Before the steel pipe is derusted on the outer wall and enters the medium frequency heating, there will be fine particles (dust, sealing rubber powder) on the outer wall of the steel pipe because many steel pipes are rolled, hoisted, and conveyed on the stand. These seemingly inconspicuous small foreign objects can pose a major threat to the integrity of the anti-corrosion coating, resulting in a decrease in the adhesion between the coating and the steel pipe substrate, which in turn causes peeling, shedding of the anti-corrosion layer and other problems, seriously shortening the service life of the pipeline. Therefore, it is necessary to set up a structure to grind and derust the steel pipe before medium frequency heating. Utility Model Content

[0004] This device provides a grinding device for steel pipe rust removal, and the specific implementation method is as follows:

[0005] A grinding device for rust removal of steel pipes, comprising:

[0006] A rotation drive assembly for fixing the steel pipe, wherein the rotation drive assembly is provided with a driving structure for driving the steel pipe to rotate circumferentially;

[0007] A pair of grinding assemblies are arranged laterally with adjustable spacing. The rotating drive assembly is arranged at the center of the two grinding assemblies. The rotating drive assembly can move longitudinally relative to the grinding assembly. The grinding assembly includes a positioning wheel and a grinding wheel corresponding to the upper and lower surfaces of the steel pipe respectively, and the spacing between the two is adjustable. The steel pipe is moved into the position to be ground by the longitudinal movement of the rotating drive assembly, and the clamping positioning of the steel pipe is achieved by the relative proximity of the positioning wheel and the grinding wheel. The grinding position is adjusted by the lateral movement of the grinding assembly.

[0008] Preferably, it further comprises a mounting seat arranged at the bottom, and the grinding assembly is divided into a first grinding assembly and a second grinding assembly which are slidably connected to the mounting seat.

[0009] Preferably, taking the connection method between the first grinding component and the mounting seat as an example, the first grinding component includes a translation seat connected to the mounting seat through a guide rail, the translation seat is provided with a lifting drive part on the top, the output end of the lifting drive part is connected to a positioning wheel, and the grinding wheel is integrated on the mounting seat.

[0010] Based on the above technical scheme, the rotating drive assembly fixes the lateral position of the steel pipe, and the lateral moving grinding assembly grinds step by step along the length direction of the steel pipe: then, the grinding assembly moves along the lateral direction of the steel pipe to perform step-by-step differential grinding. This step-by-step treatment ensures uniform cleaning and treatment of the steel pipe surface in the length direction, and removes surface unevenness marks; the rotating drive assembly controls the circumferential rotation of the steel pipe, and the steel pipe itself rotates by rotating the driving assembly, and controls the steel pipe to rotate around its central axis. At this time, the outer surface of the steel pipe will be circumferentially polished with the circumferential grinding assembly. Then, every part of the outer wall of the steel pipe is touched to ensure that all-round fine dust, rust, and residue are completely removed to achieve the ideal pretreatment effect. Ensure that the surface treatment of the steel pipe is comprehensive and without omission, and improve cleanliness and uniformity. This fine treatment method is particularly suitable for small-diameter steel pipes, such as 60-159 inches commonly seen in oil fields, especially 60-108 inches, for these sizes that are difficult to reach by hand or traditional equipment, effectively improving the efficiency and quality of pre-corrosion treatment, extending the service life of the pipeline, and reducing maintenance costs.

[0011] Preferably, the output end of the lifting drive unit is connected to a lifting plate, and the lifting plate is provided with a plurality of positioning wheels along its length direction, and the positioning wheels correspond to the grinding wheels one by one.

[0012] Preferably, the outer contour of the grinding wheel is set to a V-shaped contour, and the V-shaped contour matches the circumferential outer contour of the steel pipe.

[0013] Based on the above technical solutions, in the precision grinding process for the outer wall of the steel pipe, a grinding wheel with a V-shaped profile is used. Compared with the traditional flat or circular grinding wheel, it can penetrate deeper into the grooves and fine structures on the surface of the steel pipe. When the V-shaped inclined surfaces contact the outer wall of the steel pipe, they not only increase the direct contact area, but also form more effective grinding and scraping pressure, effectively removing rust stains, dust, residual rubber of the old coating and other impurities on the outer wall. This design is particularly suitable for steel pipes with irregularities, fine textures or original coatings that are difficult to remove on the surface, such as small-diameter pipes commonly found in oil fields; increasing the contact area means that the grinding force is more evenly distributed, reducing local overheating and scratches, avoiding possible unevenness problems, and improving the overall processing rate. In a unit of time, the grinding wheel with a V-shaped profile can more thoroughly and evenly process the surface of the steel pipe, improve the surface roughness, provide a better adhesion base material surface for the subsequent anti-corrosion coating, and ensure the durability of the anti-corrosion layer.

[0014] Preferably, the rotating drive assembly includes a table body slidably connected to the mounting seat, a cylinder body rotatably provided on the top of the table body and sleeved on the outside of the steel pipe, a radial abutment rod threadedly connected to the cylinder body and penetrating into the inner side thereof and acting on the steel pipe, a second motor is installed at the bottom of the table body, and its output end is connected to the cylinder body through a belt drive structure.

[0015] Preferably, it also includes a bag dust collector and a dust collecting hood sleeved on the outside of the grinding wheel, the dust collecting hood is connected to an air pipe, and the end of the air pipe is connected to a recovery bag through a fan.

[0016] Preferably, the dust collecting hood is an open hood body, and its top is open.

[0017] Based on the above technical solutions, the bag-type dust collector installed at the grinding site captures tiny to extremely fine dust in the air through high-efficiency filter bags, effectively preventing debris from spreading in the working area. A hose is set as a connection between the bag-type dust collector and the grinding component. This hose can adapt to the dynamic changes caused by lateral movement. The hose moves synchronously with the lateral advancement of the grinding component in the length direction of the steel pipe. Through its telescopic tension, it always fits near the grinding wheel, absorbs the generated debris in real time, and avoids secondary pollution.

[0018] In summary, this application includes the following beneficial technical effects:

[0019] 1. The utility model fixes the lateral position of the steel pipe by rotating the driving assembly, realizes step-by-step grinding along the length direction of the steel pipe by moving the grinding assembly laterally, and realizes circumferential grinding of the steel pipe at the position by controlling the circumferential rotation of the steel pipe by rotating the driving assembly;

[0020] 2. The utility model has a simple structure. By setting the outer peripheral surface of the grinding wheel as a grinding material, the V-shaped profile can increase the contact area between it and the steel pipe for grinding;

[0021] 3. The utility model can timely absorb and recover the debris from grinding through the bag dust collector, and the air pipe is set as a hose, which can generate corresponding extension during the lateral movement of the grinding component. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is an enlarged schematic diagram of a part of the structure of the utility model;

[0024] Figure 3 It is a cross-sectional schematic diagram of the top view structure of the utility model;

[0025] Figure 4 It is a schematic diagram of the structure of the utility model after bag dust removal is added.

[0026] Description of reference numerals:

[0027] 1. Bag dust collector, 2. First grinding assembly, 3. Mounting seat, 4. Second grinding assembly, 5. Rotation drive assembly, 6. Dust hood, 7. Air pipe, 8. First motor, 10. Steel pipe,

[0028] 101. Recycling bags, 102. Fans,

[0029] 201, lifting drive unit, 202, lifting plate, 203, positioning wheel, 204, grinding wheel, 205, translation seat, 206, second motor,

[0030] 2041, V-shaped outline,

[0031] 501, cylinder, 502, radial abutment rod, 503, belt, 504, second motor, 505, first pulley, 506, second pulley,

[0032] 601. Open cover. DETAILED DESCRIPTION

[0033] The following describes the specific implementation of the utility model in conjunction with the accompanying drawings and embodiments:

[0034] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0035] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of the implementation of the present utility model without substantially changing the technical content.

[0036] The following is combined with Figure 1-4 This application is described in further detail.

[0037] The embodiment of the present application discloses a grinding device for rust removal of steel pipes.

[0038] Example 1

[0039] Reference Figures 1 to 3The present embodiment discloses a grinding device for rust removal of steel pipes, comprising a mounting seat 3, a first grinding assembly 2, a second grinding assembly 4 and a rotation drive assembly 5 for fixing a steel pipe 10, the rotation drive assembly 5 being provided with a driving structure for driving the steel pipe 10 to rotate circumferentially, in the present structure, the first grinding assembly 2 and the second grinding assembly 4 are slidably connected to the mounting seat 3, the rotation drive assembly 5 can move longitudinally relative to the first grinding assembly 2 and the second grinding assembly 4, the first grinding assembly 2 comprises a positioning wheel 203 and a grinding wheel 204 corresponding to the upper and lower surfaces of the steel pipe 10 respectively, and the spacing between the two is adjustable.

[0040] Taking the connection method between the first grinding component 2 and the mounting seat 3 as an example, the first grinding component 2 includes a translation seat 205 connected to the mounting seat 3 through a guide rail, and the translation seat 205 is provided with a lifting drive unit 201 on the top, and the output end of the lifting drive unit 201 is connected to the positioning wheel 203, and the grinding wheel 204 is integrated on the mounting seat 3. In this structure, the translation seat 205 is built with a second motor 206, and its output end is connected to the grinding wheel 204. The lifting drive unit 201 is a lifting structure driven by a motor screw.

[0041] The output end of the lifting drive unit 201 is connected to a lifting plate 202. A positioning wheel 203 is provided on both sides of the bottom of the lifting plate 202. The positioning wheel 203 corresponds to the grinding wheel 204 one by one. In this structure, the outer contour of the grinding wheel 204 is set to a V-shaped contour 2041, and the V-shaped contour 2041 matches the circumferential outer contour of the steel pipe 10.

[0042] The rotation drive assembly 5 includes a table body slidably connected to the mounting seat 3, and a cylinder 501 is rotatably provided on the top of the table body and is sleeved on the outside of the steel pipe 10. The cylinder 501 is threaded with a radial abutment rod 502 that penetrates into the inner side and acts on the steel pipe 10. In this structure, the outer end of the radial abutment rod 502 is manually rotated or mechanically and automatically rotated to control the radial abutment rod 502 to radially penetrate into the cylinder 501, and the position of the steel pipe 10 is locked by the abutment of the end with the steel pipe 10.

[0043] A second motor 504 is installed at the bottom of the platform, and its output end is connected to the cylinder 501 through a belt transmission structure. In this structure, a second pulley 506 is integrated at the end of the cylinder 501, and a first pulley 505 is provided at the output end of the second motor 504. The first pulley 505 and the second pulley 506 are linked by a belt 503.

[0044] Example 2

[0045] Reference Figure 1 and Figure 4, and based on Example 1, this embodiment also provides a grinding device for rust removal of steel pipes, which also includes a bag dust collector 1 and a dust hood 6 mounted on the outside of the grinding wheel 204, the dust hood 6 is connected to an air pipe 7, the end of the air pipe 7 is connected to a recovery bag 101 through a fan 102, and the dust hood 6 in this structure is an open cover body 601, and its top is open.

[0046] The specific implementation process is: put the steel pipe 10 into the center position of the cylinder 501, tighten the radial abutment rod 502 to lock it with the cylinder 501; the lifting drive part 201 starts to control the positioning wheel 203 to fall, and the positioning wheel 203 and the grinding wheel 204 press the steel pipe 10; the second motor 206 starts, the grinding wheel 204 performs the grinding operation, and the second motor 504 controls the steel pipe 10 to rotate for circumferential grinding; after the circumferential grinding is completed, the grinding operation of different parts is realized through the lateral translation of the first grinding component 2 and the second grinding component 4; during the grinding process, the debris enters the recovery bag 101 through the open cover 601 and the air pipe 7.

[0047] Example 3

[0048] Reference Figure 1 and Figure 2 Based on Example 1, this embodiment also provides a grinding device for rust removal of steel pipes, wherein an independent lead screw structure is integrated on the mounting seat 3, and the first grinding assembly 2 and the second grinding assembly 4 are driven by a motor to perform gradual lateral displacement, thereby realizing gradual grinding along the length direction of the steel pipe 10.

[0049] Many other changes and modifications can be made without departing from the concept and scope of the utility model. It should be understood that the utility model is not limited to a specific embodiment, and the scope of the utility model is defined by the appended claims.

Claims

1. A grinding device for rust removal of steel pipes, characterized in that: include: A rotation drive assembly (5) for fixing the steel pipe (10), wherein the rotation drive assembly (5) is provided with a drive structure for driving the steel pipe (10) to rotate in a circumferential direction; A pair of grinding assemblies arranged transversely and having adjustable spacing, wherein the rotating drive assembly (5) is provided at the center of the two grinding assemblies, the rotating drive assembly (5) can move longitudinally relative to the grinding assembly, the grinding assembly comprises a positioning wheel (203) and a grinding wheel (204) corresponding to the upper and lower surfaces of the steel pipe (10), respectively, and the spacing between the two is adjustable, the steel pipe (10) is moved into a position to be ground by the longitudinal movement of the rotating drive assembly (5), the steel pipe (10) is clamped and positioned by the relative proximity of the positioning wheel (203) and the grinding wheel (204), and the grinding position is adjusted by the transverse movement of the grinding assembly.

2. A grinding device for rust removal of steel pipe according to claim 1, characterized in that: It also includes a mounting seat (3) arranged at the bottom, and the grinding assembly is divided into a first grinding assembly (2) and a second grinding assembly (4) which are slidably connected to the mounting seat (3).

3. A grinding device for rust removal of steel pipe according to claim 2, characterized in that: Taking the connection method between the first grinding component (2) and the mounting seat (3) as an example, the first grinding component (2) comprises a translation seat (205) connected to the mounting seat (3) via a guide rail, the translation seat (205) is provided with a lifting drive unit (201) at the top, the output end of the lifting drive unit (201) is connected to a positioning wheel (203), and the grinding wheel (204) is integrated on the mounting seat (3).

4. A grinding device for rust removal of steel pipe according to claim 3, characterized in that: The output end of the lifting drive unit (201) is connected to a lifting plate (202), and the lifting plate (202) is provided with a plurality of positioning wheels (203) along its length direction, and the positioning wheels (203) correspond to the grinding wheels (204) one by one.

5. A grinding device for rust removal of steel pipe according to claim 4, characterized in that: The outer contour of the grinding wheel (204) is set as a V-shaped contour (2041), and the V-shaped contour (2041) matches the circumferential outer contour of the steel pipe (10).

6. A grinding device for rust removal of steel pipe according to claim 2, characterized in that: The rotary drive assembly (5) comprises a platform body slidably connected to the mounting seat (3), a cylinder body (501) rotatably provided on the top of the platform body and sleeved on the outside of the steel pipe (10), and a radial abutment rod (502) threadedly connected to the cylinder body (501) and penetrating into the inside thereof and acting on the steel pipe (10); A second motor (504) is installed at the bottom of the platform, and its output end is connected to the cylinder (501) through a belt transmission structure.

7. A grinding device for rust removal of steel pipe according to claim 5, characterized in that: It also includes a bag dust collector (1) and a dust collecting hood (6) sleeved on the outside of the grinding wheel (204); the dust collecting hood (6) is connected to an air pipe (7); the end of the air pipe (7) is connected to a recovery bag (101) through a fan (102).

8. A grinding device for rust removal of steel pipe according to claim 7, characterized in that: The dust collecting hood (6) is an open hood body (601) with an open top.

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