Surface treatment device and method for galvanized steel pipe

Abstract

The invention discloses a surface treatment device and method for a galvanized steel pipe, and the device comprises a positioning mechanism which is used for supporting and positioning the galvanized steel pipe; the feeding mechanism is used for driving the galvanized steel pipe to rotate along the axis of the galvanized steel pipe and synchronously move in the preset direction; the surface treatment mechanism comprises at least one first surface treatment assembly and at least one second surface treatment assembly, the first surface treatment assembly and the second surface treatment assembly are sequentially arranged in the moving direction of the galvanized steel pipe, the first surface treatment assembly comprises a first driver and a first grinding wheel driven by the first driver to rotate, and the second surface treatment assembly comprises a second driver and a second grinding wheel driven by the second driver to rotate; the second surface treatment assembly comprises a second driver and a second polishing wheel driven by the second driver to rotate. The method has the beneficial effects that the corrosion resistance and the service life of the galvanized steel pipe can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline surface treatment, and in particular to a surface treatment device and method for a galvanized steel pipe. Background Art

[0002] Galvanized steel pipe is a kind of pipe material that has been galvanized on the surface of the steel pipe, and the surface of the steel pipe is evenly covered with a zinc layer. When the galvanized steel pipe is exposed to a humid or corrosive environment, the zinc layer will oxidize before the steel pipe, thereby protecting the steel pipe itself from corrosion, which effectively extends the service life of the steel pipe and is widely used in various occasions that require corrosion resistance.

[0003] Usually, in order to further increase the service life and corrosion resistance of galvanized steel pipes, protective substances will be coated on the surface of galvanized steel pipes to form a protective layer outside the galvanized layer. Before this, the surface of the galvanized steel pipe needs to be cleaned and polished to remove stains, rust and oxides on the surface of the pipe to ensure a good combination of the protective substance and the galvanized layer. Generally, operators will use shot blasting to treat the surface of galvanized steel pipes, but the shot blasting process can easily damage the galvanized layer of the steel pipe, thereby reducing the anti-corrosion performance and service life of the galvanized steel pipe itself. Summary of the invention

[0004] The purpose of the present invention is to provide a surface treatment device and method for a galvanized steel pipe, so as to improve the anti-corrosion performance and service life of the galvanized steel pipe.

[0005] The present invention is achieved through the following technical solutions.

[0006] A surface treatment device for a galvanized steel pipe, comprising: Positioning mechanism, used to support and position the galvanized steel pipe; A feeding mechanism, used to drive the galvanized steel pipe to rotate along its own axis and move synchronously along a preset direction; The surface treatment mechanism comprises at least one first surface treatment component and a second surface treatment component, wherein the first surface treatment component and the second surface treatment component are sequentially arranged along the moving direction of the galvanized steel pipe, wherein the first surface treatment component comprises a first driver and a first grinding wheel driven to rotate by the first driver, and the second surface treatment component comprises a second driver and a second grinding wheel driven to rotate by the second driver; The first grinding wheel has a plurality of grinding sheets stacked and fixed in the circumferential direction, the spreading direction of at least the outer ends of the grinding sheets is inclined to the radial direction of the first grinding wheel, and the outer ends of the plurality of grinding sheets form the outer wheel surface of the first grinding wheel for grinding the galvanized steel pipe; The second grinding wheel comprises a plurality of grinding wires closely arranged along the circumferential direction, and the outer ends of the plurality of grinding wires form the second grinding wheel for grinding the outer wheel surface of the galvanized steel pipe.

[0007] As a further improvement of the present invention, it also includes a lifting mechanism, which includes a plurality of lifting arms arranged above the positioning mechanism and capable of vertically moving relative to the galvanized steel pipe, and the first grinding wheel and the second grinding wheel are respectively detachably connected to different lifting arms.

[0008] As a further improvement of the present invention, the positioning mechanism includes two positioning seats arranged at intervals, and the two positioning seats are respectively provided with a first positioning assembly and a second positioning assembly, the first positioning assembly includes a plurality of first positioning wheels rotatably connected to the positioning seats, and the second positioning assembly includes a plurality of second positioning wheels rotatably connected to the positioning seats, the first positioning wheel is vertically arranged, and the second positioning wheel is inclined relative to the first positioning wheel along the moving direction of the galvanized steel pipe, and the feeding mechanism drives the galvanized steel pipe to rotate along its own axis so that the galvanized steel pipe moves along a preset direction with the cooperation of the first positioning wheel and the second positioning wheel.

[0009] As a further improvement of the present invention, the feeding mechanism includes at least one guide assembly, which includes a third driver and a guide wheel driven to rotate by the third driver, and the guide wheel is rotatably mounted on the lifting arm. The third driver is used to drive the guide wheel to rotate so as to drive the galvanized steel pipe to rotate and move synchronously on the first positioning wheel and the second positioning wheel, and the guide wheel is connected to the first grinding wheel and the second grinding wheel on different lifting arms.

[0010] As a further improvement of the present invention, at least one guide assembly is respectively provided on both sides of the surface treatment mechanism along the moving direction of the galvanized steel pipe.

[0011] As a further improvement of the present invention, at least one of the positioning seats is connected to an adjusting member, and the adjusting member is used to drive the positioning seat to move toward or away from the other positioning seat to adjust the spacing distance between the two positioning seats.

[0012] As a further improvement of the present invention, the adjusting member is configured as an adjusting screw rod, and the adjusting screw rod is rotatably inserted through one of the positioning seats and is connected to the other positioning seat via a nut sleeve.

[0013] As a further improvement of the present invention, the first positioning wheel and the second positioning wheel are respectively mounted on the positioning seat through a first mounting seat and a second mounting seat, the first positioning wheel is rotatably connected to the first mounting seat, the second positioning wheel is rotatably connected to the second mounting seat, the first mounting seat is vertically arranged, and the second mounting seat is inclined relative to the first mounting seat along the moving direction of the galvanized steel pipe.

[0014] A surface treatment method for a galvanized steel pipe is applied to a surface treatment device for a galvanized steel pipe in the above technical solution, and the steps of the surface treatment method are as follows: S1: Place the galvanized steel pipe in the positioning mechanism and check whether the initial position of the galvanized steel pipe meets the processing requirements; S2: Surface treatment of the galvanized steel pipe is performed using a surface treatment mechanism; S3: Spraying a protective substance on the surface of the surface-treated galvanized steel pipe to form a protective layer outside the galvanized layer of the galvanized steel pipe.

[0015] As a further improvement of the present invention, in step S1, when the galvanized steel pipe is in the initial position, along the moving direction of the galvanized steel pipe, the position of one end of the galvanized steel pipe facing the moving direction is located before the first grinding wheel.

[0016] Beneficial effects of the present invention: 1. Use the first grinding wheel and the second grinding wheel to grind the surface of the galvanized steel pipe in turn. First, use the first grinding wheel to grind the surface of the galvanized steel pipe to remove dirt, oxides, rust and uneven parts outside the galvanized layer of the galvanized steel pipe, so that the surface of the galvanized steel pipe is smooth and flat. Then, use the rotating second grinding wheel to grind the surface of the galvanized steel pipe, thereby forming a texture structure on the surface of the galvanized steel pipe and achieving rough treatment of the surface of the galvanized steel pipe, so that the protective substance can better adhere to the galvanized layer of the galvanized steel pipe, thereby improving the corrosion resistance and service life of the galvanized steel pipe.

[0017] 2. The feeding mechanism can drive the galvanized steel pipe to rotate along its own axis and move synchronously along the preset direction. On the one hand, the first grinding wheel and the second grinding wheel can comprehensively and evenly grind the surface of the galvanized steel pipe, thereby improving the consistency of the surface quality of the galvanized steel pipe after grinding. On the other hand, it improves the work efficiency of the surface treatment of the galvanized steel pipe.

[0018] 3. The first grinding wheel and the second grinding wheel are controlled to contact the surface of the galvanized steel pipe by the vertical lifting movement of the lifting arm, which can avoid damage to the galvanized layer of the galvanized steel pipe due to excessive grinding and ensure the performance and service life of the galvanized steel pipe.

[0019] 4. Along the moving direction of the galvanized steel pipe, at least one guide component is provided on both sides of the surface treatment mechanism. Therefore, the galvanized steel pipe located on the positioning mechanism can be automatically moved through the lower area of ​​the surface treatment mechanism without manual intervention. On the one hand, the grinding treatment of the galvanized steel pipe is ensured, and on the other hand, the difficulty of manual operation is significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein: Figure 1 It is a structural schematic diagram of a surface treatment device for a galvanized steel pipe according to the present invention; Figure 2 is a front view of the first grinding wheel; Figure 3 is a side view of the first grinding wheel; Figure 4 is a side view of the second grinding wheel; Figure 5 It is a side view of a surface treatment device for a galvanized steel pipe according to the present invention; Figure 6 for Figure 1 The structural diagram of part A in the figure; Figure 7 It is a structural diagram of the positioning mechanism. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below based on the accompanying drawings and implementation examples.

[0022] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0023] Embodiment 1: A surface treatment device for a galvanized steel pipe m, used for surface treatment of a galvanized steel pipe m, referring to Figure 1-Figure 7, including a positioning mechanism 1, a feeding mechanism 2, a surface treatment mechanism 3 and a lifting mechanism, wherein the positioning mechanism 1 is used to position the galvanized steel pipe m, the feeding mechanism 2 is used to drive the galvanized steel pipe m to rotate along its own axis and move synchronously along a preset direction, the surface treatment mechanism 3 includes at least one first surface treatment component 31 and a second surface treatment component 32, and the first surface treatment component 31 and the second surface treatment component 32 are sequentially arranged along the moving direction of the galvanized steel pipe m, the first surface treatment component 31 includes a first driver 311 and a first grinding wheel 312 driven to rotate by the first driver 311, and the second surface treatment component Component 32 includes a second driver 321 and a second grinding wheel 322 driven to rotate by the second driver 321. The first grinding wheel 312 has a plurality of grinding sheets 312a stacked and fixed in a circumferential direction. The unfolding direction of at least the outer ends of the grinding sheets 312a is inclined to the radial direction of the first grinding wheel 312, and the outer ends of the plurality of grinding sheets 312a form the first grinding wheel 312 for grinding the outer wheel surface of the galvanized steel pipe m. The second grinding wheel 322 has a plurality of grinding wires 322a closely arranged in a circumferential direction. The outer ends of the plurality of grinding wires 322a form the second grinding wheel 322 for grinding the outer wheel surface of the galvanized steel pipe m.

[0024] In this embodiment, when the first grinding wheel 312 contacts the surface of the galvanized steel pipe m, the rotating grinding sheet 312a contacts the surface of the galvanized steel pipe m, and the inclined design of the grinding sheet 312a enables the first grinding wheel 312 to generate a certain cutting force during grinding, which helps to remove dirt, rust and uneven parts on the surface of the workpiece. At the same time, the inclined grinding sheet 312a can also better adapt to the tiny bumps on the surface of the galvanized steel pipe m, achieving a more refined grinding effect. The grinding sheet 312a here can be an emery cloth sheet or other sheet-like structure material with good grinding effect.

[0025] In this embodiment, the grinding wire 322a of the second grinding wheel 322 has a high hardness. When the second grinding wheel 322 contacts the galvanized steel pipe m, the outer ends of the plurality of grinding wires 322a can form a texture structure on the surface of the workpiece, so that the surface of the galvanized steel pipe m after grinding has a certain degree of roughness, and the protective material can better adhere to the galvanized layer of the galvanized steel pipe m, thereby improving the anti-corrosion performance of the galvanized steel pipe m. The grinding wire 322a here can be a filamentary structure made of a hard and wear-resistant metal material, such as steel wire, tungsten wire, etc.

[0026] When the device is working, the first grinding wheel 312 and the second grinding wheel 322 are used to grind the surface of the galvanized steel pipe m in turn. First, the first grinding wheel 312 is used to grind the surface of the galvanized steel pipe m to remove dirt, oxides, rust and uneven parts outside the galvanized layer of the galvanized steel pipe m, so that the surface of the galvanized steel pipe m is smooth and flat. Then, the rotating second grinding wheel 322 is used to grind the surface of the galvanized steel pipe m, thereby forming a texture structure on the surface of the galvanized steel pipe m, achieving rough treatment of the surface of the galvanized steel pipe m, so that the protective substance can better adhere to the galvanized layer of the galvanized steel pipe m, thereby improving the corrosion resistance and service life of the galvanized steel pipe m. At the same time, the feeding mechanism 2 can drive the galvanized steel pipe m to rotate along its own axis and move synchronously along a preset direction. On the one hand, it enables the first grinding wheel 312 and the second grinding wheel 322 to comprehensively and evenly grind the surface of the galvanized steel pipe m, thereby improving the consistency of the surface quality of the galvanized steel pipe m after surface treatment. On the other hand, it improves the work efficiency of the surface treatment of the galvanized steel pipe m.

[0027] In this embodiment, the lifting mechanism includes a plurality of lifting arms 4 which are arranged above the positioning mechanism 1 and can be lifted vertically. The first grinding wheel 312 and the second grinding wheel 322 are detachably connected to different lifting arms 4, respectively. In addition, the first grinding wheel 312 is set as the first grinding wheel 312, and the second grinding wheel 322 is set as the second grinding wheel 322. When performing surface treatment on the galvanized steel pipe m, the first grinding wheel 312 and the second grinding wheel 322 are controlled to contact the surface of the galvanized steel pipe m through the vertical lifting movement of the lifting arm 4, so as to avoid damage to the galvanized layer of the galvanized steel pipe m due to excessive grinding, thereby ensuring the performance and service life of the galvanized steel pipe m.

[0028] In this embodiment, since the second grinding wheel 322 is detachably connected to the lifting arm 4, the surface roughness of the galvanized steel pipe m can be adjusted by replacing the second grinding wheel 322 with grinding wires 322a of different sizes, so that the operator can process different roughness on the galvanized layer of the galvanized steel pipe m according to different needs, and the applicability is strong.

[0029] In addition, it should be noted that the functional limitation of "the lifting arm 4 can be vertically lifted and lowered relative to the galvanized steel pipe m" in this embodiment can be achieved through structures such as a screw nut mechanism and a cylinder mechanism. Specifically, the lifting arm 4 can be driven to move vertically through the screw nut mechanism. The functional limitation and implementation method of the above-mentioned lifting arm 4 belong to the prior art and will not be repeated here.

[0030] In this embodiment, refer to Figure 5 , Figure 6 and Figure 7The positioning mechanism 1 includes two positioning seats 11 arranged at intervals, the positioning seats 11 extend along the axial direction of the galvanized steel pipe m, and the two positioning seats 11 are respectively provided with a first positioning assembly and a second positioning assembly, the first positioning assembly includes a plurality of first positioning wheels 12 rotatably connected to the positioning seats 11, and the second positioning assembly includes a plurality of second positioning wheels 13 rotatably connected to the positioning seats 11, and the plurality of first positioning wheels 12 and the plurality of second positioning wheels 13 are arranged at intervals along the axial direction of the galvanized steel pipe m, the first positioning wheel 12 is arranged vertically, and the second positioning wheel 13 is relative to the first positioning wheel 12 is inclined along the moving direction of the galvanized steel pipe m, and the feeding mechanism 2 drives the galvanized steel pipe m to rotate along its own axis so that the galvanized steel pipe m moves along the preset direction under the cooperation of the first positioning wheel 12 and the second positioning wheel 13. When the galvanized steel pipe m rotates, the first positioning wheel 12 and the second positioning wheel 13 will rotate driven by the galvanized steel pipe m. Since the second positioning wheel 13 is inclined relative to the first positioning wheel 12, the second positioning wheel 13 can apply a thrust to the galvanized steel pipe m along the inclined direction when rotating, thereby pushing the galvanized steel pipe m to move along the inclined direction.

[0031] In this embodiment, the first positioning wheel 12 and the second positioning wheel 13 are respectively installed on the positioning seat 11 through the first mounting seat 14 and the second mounting seat 15, the first positioning wheel 12 is rotatably connected to the first mounting seat 14 through the wheel axle, the second positioning wheel 13 is rotatably connected to the second mounting seat 15 through the wheel axle, the first mounting seat 14 is vertically arranged, and the second mounting seat 15 is inclined relative to the first mounting seat 14 along the moving direction of the galvanized steel pipe m, so that the second positioning wheel 13 is inclined relative to the first positioning wheel 12.

[0032] In this embodiment, the feeding mechanism 2 includes at least one guide assembly, which includes a third driver 21 and a guide wheel 22 driven to rotate by the third driver 21. The guide wheel 22 is vertically arranged and rotatably connected to the lifting arm 4. The third driver 21 is used to drive the guide wheel 22 to rotate to guide the galvanized steel pipe m to rotate. Here, the guide wheel 22 and the first grinding wheel 312 and the second grinding wheel 322 are connected to different lifting arms 4. When working, after the lifting and lowering movement of the lifting arm 4 drives the guide wheel 22 to contact the surface of the galvanized steel pipe m, the third driver 21 drives the guide wheel 22 to rotate. Under the action of friction, the guide wheel 22 rotates to drive the galvanized steel pipe m to rotate, so that the galvanized steel pipe m can rotate and move on the first positioning wheel 12 and the second positioning wheel 13. At the same time, the vertical lifting and lowering movement of the lifting arm 4 drives the guide wheel 22 to contact the galvanized steel pipe m, which can exert downward pressure on the galvanized steel pipe m, so that the galvanized steel pipe m is more closely in contact with the first positioning wheel 12 and the second positioning wheel 13, which helps to improve the stability of the galvanized steel pipe m when rotating and moving.

[0033] In this embodiment, the first grinding wheel 312, the second grinding wheel 322 and the guide wheel 22 can be connected to corresponding drivers through shaft transmission, and the first driver 311, the second driver 321 and the third driver 21 can all be stepper motors.

[0034] In this embodiment, at least one guide component is provided on both sides of the surface treatment mechanism 3 along the moving direction of the galvanized steel pipe m. Therefore, the galvanized steel pipe m located on the positioning mechanism 1 can be automatically moved through the lower area of ​​the surface treatment mechanism 3 without manual intervention. On the one hand, the grinding treatment of the galvanized steel pipe m is ensured, and on the other hand, the difficulty of manual operation is reduced.

[0035] In this embodiment, at least one positioning seat 11 is connected with an adjusting member 5, and the adjusting member 5 is used to drive one of the positioning seats 11 to move toward or away from the other positioning seat 11 to adjust the spacing between the two positioning seats 11. Therefore, when the device performs surface treatment on galvanized steel pipes m with different outer diameters, the spacing between the two positioning seats 11 can be adjusted according to the outer diameter of the galvanized steel pipe m, so that the device can adapt to galvanized steel pipes m with different outer diameters, thereby improving the applicability of the device. Specifically, the adjusting member 5 is set as an adjusting screw rod, which is rotatably arranged in one of the positioning seats 11 and connected to the other positioning seat 11 through a nut sleeve, wherein the positioning seat 11 rotatably connected to the adjusting screw rod is provided with a through hole allowing the adjusting screw rod to pass through, and the hole wall of the through hole is provided with an internal thread, and the adjusting screw rod is provided with an external thread matching the internal thread of the through hole, therefore, the rotating adjusting screw rod can drive the positioning seat 11 connected to the adjusting screw rod through the nut sleeve to move, and the direction of movement can be controlled by the rotation direction of the adjusting screw rod, which is convenient to operate.

[0036] Embodiment 2: A surface treatment method for a galvanized steel pipe m is applied to a surface treatment device for a galvanized steel pipe m in an embodiment, and the steps of the surface treatment method are as follows: S: Place the galvanized steel pipe m in the positioning mechanism 1, and check whether the initial position of the galvanized steel pipe m meets the processing requirements; S: Surface treatment is performed on the galvanized steel pipe m by using the surface treatment mechanism 3; S: Spray protective material on the surface of the galvanized steel pipe m to form a protective layer on the surface of the galvanized steel pipe m.

[0037] In this embodiment, when the surface treatment mechanism 3 is used to perform surface treatment on the galvanized steel pipe m, that is, the surface of the galvanized steel pipe m is polished using the rotating first grinding wheel 312 to remove stains, oxides, rust and uneven parts on the surface of the galvanized steel pipe m, so that the surface of the galvanized steel pipe m is smooth and flat, and then the surface of the galvanized steel pipe m is polished using the rotating second grinding wheel 322 to form a texture structure on the surface of the galvanized steel pipe m, thereby achieving rough treatment of the surface of the galvanized steel pipe m, so that the protective substance can better adhere to the surface of the galvanized steel pipe m.

[0038] In this embodiment, when the galvanized steel pipe m is in the initial position, along the moving direction of the galvanized steel pipe m, the position of one end of the galvanized steel pipe m facing the moving direction is located before the first grinding wheel 312, so as to achieve comprehensive surface treatment of the surface of the galvanized steel pipe m.

[0039] In this embodiment, the protective substance may be epoxy powder, which has good protective properties and helps to improve the corrosion resistance and service life of the galvanized steel pipe m.

[0040] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned implementation cases, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned implementation cases, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present invention.

Claims

1. A surface treatment device for a galvanized steel pipe, characterized in that: include: A positioning mechanism (1), used for supporting and positioning the galvanized steel pipe (m); A feeding mechanism (2) is used to drive the galvanized steel pipe (m) to rotate along its own axis and move synchronously along a preset direction; A surface treatment mechanism (3), comprising at least one first surface treatment component (31) and a second surface treatment component (32), wherein the first surface treatment component (31) and the second surface treatment component (32) are arranged in sequence along the moving direction of the galvanized steel pipe (m), wherein the first surface treatment component (31) comprises a first driver (311) and a first grinding wheel (312) driven to rotate by the first driver (311), and the second surface treatment component (32) comprises a second driver (321) and a second grinding wheel (322) driven to rotate by the second driver (321); The first grinding wheel (312) has a plurality of grinding sheets (312a) stacked and fixed in a circumferential direction, the spreading direction of at least the outer ends of the grinding sheets (312a) being inclined to the radial direction of the first grinding wheel (312), and the outer ends of the plurality of grinding sheets (312a) forming the first grinding wheel (312) for grinding the outer wheel surface of the galvanized steel pipe (m); The second grinding wheel (322) comprises a plurality of grinding wires (322a) closely arranged in the circumferential direction, and the outer ends of the plurality of grinding wires (322a) form the second grinding wheel (322) for grinding the outer wheel surface of the galvanized steel pipe (m).

2. A surface treatment device for a galvanized steel pipe according to claim 1, characterized in that: It also includes a lifting mechanism, the lifting mechanism including a plurality of lifting arms (4) disposed above the positioning mechanism (1) and capable of vertically moving relative to the galvanized steel pipe (m), the first grinding wheel (312) and the second grinding wheel (322) being detachably connected to different lifting arms (4).

3. A surface treatment device for a galvanized steel pipe according to claim 2, characterized in that: The positioning mechanism (1) comprises two positioning seats (11) arranged at intervals, and the two positioning seats (11) are respectively provided with a first positioning assembly and a second positioning assembly, the first positioning assembly comprises a plurality of first positioning wheels (12) rotatably connected to the positioning seats (11), and the second positioning assembly comprises a plurality of second positioning wheels (13) rotatably connected to the positioning seats (11), the first positioning wheel (12) is arranged vertically, and the second positioning wheel (13) is inclined relative to the first positioning wheel (12) along the moving direction of the galvanized steel pipe (m), and the feeding mechanism (2) drives the galvanized steel pipe (m) to rotate along its own axis so that the galvanized steel pipe (m) moves along a preset direction under the cooperation of the first positioning wheel (12) and the second positioning wheel (13).

4. A surface treatment device for a galvanized steel pipe according to claim 3, characterized in that: The feeding mechanism (2) comprises at least one guide assembly, the guide assembly comprising a third driver (21) and a guide wheel (22) driven to rotate by the third driver (21), the guide wheel (22) being rotatably mounted on the lifting arm (4), the third driver (21) being used to drive the guide wheel (22) to rotate so as to drive the galvanized steel pipe (m) to rotate and move synchronously on the first positioning wheel (12) and the second positioning wheel (13), and the guide wheel (22) is connected to the first grinding wheel (312) and the second grinding wheel (322) on different lifting arms (4).

5. The surface treatment device for a galvanized steel pipe according to claim 4, characterized in that: Along the moving direction of the galvanized steel pipe (m), at least one guide component is respectively provided on both sides of the surface treatment mechanism (3).

6. The surface treatment device for a galvanized steel pipe according to claim 3, characterized in that: At least one of the positioning seats (11) is connected to an adjusting member (5), and the adjusting member (5) is used to drive the positioning seat (11) to move towards or away from another positioning seat (11) so as to adjust the spacing distance between the two positioning seats (11).

7. A surface treatment device for a galvanized steel pipe according to claim 6, characterized in that: The adjusting member (5) is configured as an adjusting screw rod, which is rotatably inserted into one of the positioning seats (11) and connected to the other positioning seat (11) via a nut sleeve.

8. The surface treatment device for a galvanized steel pipe according to claim 3, characterized in that: The first positioning wheel (12) and the second positioning wheel (13) are respectively mounted on the positioning seat (11) via a first mounting seat (14) and a second mounting seat (15); the first positioning wheel (12) is rotatably connected to the first mounting seat (14); the second positioning wheel (13) is rotatably connected to the second mounting seat (15); the first mounting seat (14) is vertically arranged; and the second mounting seat (15) is inclined relative to the first mounting seat (14) along the moving direction of the galvanized steel pipe (m).

9. A surface treatment method for a galvanized steel pipe, characterized in that: A surface treatment device for a galvanized steel pipe according to any one of claims 1 to 8, wherein the steps of the surface treatment method are as follows: S1: placing the galvanized steel pipe (m) in the positioning mechanism (1), and checking whether the initial position of the galvanized steel pipe (m) meets the processing requirements; S2: performing surface treatment on the galvanized steel pipe (m) using a surface treatment mechanism (3); S3: spraying a protective substance on the surface of the surface-treated galvanized steel pipe (m) to form a protective layer outside the galvanized layer of the galvanized steel pipe (m).

10. A surface treatment method for a galvanized steel pipe according to claim 9, characterized in that: In step S1, when the galvanized steel pipe (m) is in an initial position, along the moving direction of the galvanized steel pipe (m), the position of one end of the galvanized steel pipe (m) facing the moving direction is located before the first grinding wheel (312).

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