A stainless steel pipe welding device for water conservancy

Abstract

The invention relates to the technical field of pipeline welding, and specifically discloses a stainless steel pipeline welding device for water conservancy, comprising a bracket, which is rectangular and has two groups. The two groups are arranged on the ground, and a frame with a gantry structure design is fixedly connected to the outer surface of the upper end of the bracket. After the pipeline is clamped in place, four groups of rotating rollers are driven to rotate by a dual-axis motor, and the rotating rollers clean and polish the welding area of ​​the pipeline for pretreatment to improve the stability of subsequent welding. The bristles adhered to the outer surface of the rotating roller are designed as an arc-shaped structure, and the tips of the bristles face one side of the pipeline. When the rotating roller rotates at a high speed, the centrifugal force will cause a certain straightening of the arc-shaped bristles. With the cooperation of the counterweight block and the baffle, as the centrifugal force of the counterweight block increases, the rotating roller is forced to move a certain distance along the direction of the pipeline, and the slightly straightened bristles are squeezed onto the vertical section of the pipeline. As the rotating roller rotates, the arc surface and the vertical surface of the pipeline are polished and cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline welding, in particular to a stainless steel pipeline welding device used for water conservancy. Background Art

[0002] Pipeline welding is an important technology, which is widely used in petrochemical, construction, energy and other fields. In order to improve welding efficiency, an automatic welding machine is used. With the help of a 360-degree rotating welding clamp and an automatic welding intelligent control system, it can automatically complete the argon arc welding of the base, filling and cover of the petrochemical pipeline without moving the pipe fittings.

[0003] The automatic welding machine directly fixes the pipe on the fixture when in use, and then the equipment automatically welds the pipe directly. This type of welding machine lacks a device to process the pipe welding joint before welding. Before welding, the welding joints of the two sets of pipes need to be manually polished and cleaned to ensure that they are smooth and clean, and to avoid desoldering during welding, which wastes manpower and material resources too much;

[0004] Therefore, we propose a stainless steel pipe welding device for water conservancy. Summary of the invention

[0005] The object of the present invention is to provide a stainless steel pipe welding device for water conservancy to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a stainless steel pipe welding device for water conservancy, comprising a bracket, the bracket is rectangular, and the number is two sets, the two sets are arranged on the ground, and the upper end outer surface of the bracket is fixedly connected to a frame with a gantry structure design;

[0007] A combined motor is fixedly connected to the middle position of the frame, the output ends of the combined motor are located at the front and rear ends, and the output ends are fixedly connected to threaded rods, and both ends of the threaded rods are provided with clamping components for clamping the pipeline;

[0008] The clamping assembly is designed as a triangular structure as a whole, and has three sets of clamping parts built in it. The three sets of clamping parts clamp and fix the pipeline. The end of the clamping part away from the pipeline is fixedly connected to a hydraulic cylinder, and the end of the hydraulic cylinder away from the clamping part is fixedly connected to a connecting part, and the connecting part is movably connected to the bracket;

[0009] A pretreatment component is located at the edge of the pipeline welding, and the pretreatment component includes rotating rollers, which are located at the end of the pipeline and are in two groups. One group of the two groups of rotating rollers is located inside the pipeline, and the other group is located outside the pipeline, and the annular outer surfaces are in contact with the pipeline. The pipeline surface will be rust-removed and cleaned before welding.

[0010] Among them, there are three groups of connecting parts, and the upper group of connecting parts is threadedly connected to the threaded rod, and the connecting parts located on the left and right sides are fixedly connected to the ends away from the hydraulic cylinder with sliders, and the corresponding positions of the bracket and the slider are provided with sliding grooves, and the slider slides inside the sliding grooves. The adjacent positions of the three groups of connecting parts are connected by rods to form a triangular structure design.

[0011] Among them, a limiting ring with a semicircular ring structure design is fixedly connected to the center position of the bracket, a swivel is rotatably connected inside the limiting ring, a welding head is fixedly connected to the inner surface of the swivel, and the pretreatment component is fixedly connected to the inner surface of the swivel, and the two correspond to each other.

[0012] Among them, the pretreatment component also includes an electric telescopic rod, one end of the electric telescopic rod is fixedly connected to the inner surface of the rotating ring, the upper end of the electric telescopic rod is fixedly connected to a dual-axis motor, both ends of the dual-axis motor are fixedly connected to connecting plates, a cavity is opened inside the connecting plate, the output end of the dual-axis motor is fixedly connected to a driving wheel, the annular outer surface of the driving wheel contacts a driven wheel, the end of the driven wheel away from the dual-axis motor is fixedly connected to a rotating rod, and the rotating rod is connected to a rotating roller.

[0013] Among them, the annular outer surface of the rotating roller is adhered with an adhesive tape, the annular outer surface of the adhesive tape is fixedly connected with bristles, and the annular outer surface of the rotating roller close to one end of the connecting plate is fixedly connected with fan blades. The fan blades are in several groups and distributed in a circular array around the rotating roller.

[0014] Among them, a cavity is opened inside the rotating roller, and a telescopic groove is opened on the annular outer surface of the rotating rod. A counterweight block is slidably connected inside the telescopic groove. The end of the counterweight block away from the connecting plate is designed as an inclined structure. A baffle is fixedly connected to the inner surface of the cavity, and the baffle is aligned with the inclined surface. A spring is fixedly connected between the counterweight block and the telescopic groove.

[0015] Among them, the end of the rotating rod away from the driven wheel is fixedly connected to a magnetic block, the inner wall of the end of the rotating roller is made of magnetic metal, the magnetic block is magnetically connected to the rotating roller, the rotating rod passes through the rotating roller, and its annular outer surface is fixedly connected to a guide block, and a guide groove is provided at the position corresponding to the rotating roller and the guide block.

[0016] Among them, the end of the rotating rod away from the rotating roller is fixedly connected to a bevel gear 1, and the end of the bevel gear 1 away from the rotating rod is rotatably connected to a sliding block through a rotating shaft. A sliding groove is opened in the cavity at a corresponding position to the sliding block, the sliding block is located inside the sliding groove, and a spring 2 is fixedly connected between the two. A bevel gear 2 meshing with the bevel gear 1 is provided at the center position of the inner surface of the cavity, and an electromagnet is fixedly connected to the end of the connecting plate away from the rotating roller, and the electromagnet is magnetically connected to the bevel gear 2.

[0017] Among them, a transmission groove is opened at the center position of the bevel gear 2, and a transmission rod is slidably connected inside the transmission groove. The end of the transmission rod away from the transmission groove is fixedly connected to the output end of the dual-axis motor, and a limiting groove is opened at the end of the connecting plate close to the rotating roller, and a limiting ring is fixedly connected to the corresponding position of the rotating rod and the limiting groove.

[0018] The present invention has at least the following beneficial effects:

[0019] A pretreatment component is provided at the lowering of the welding head. After the pipe is clamped in place, four sets of rotating rollers are driven to rotate by a dual-axis motor. The rotating rollers clean and polish the welding area of ​​the pipe for pretreatment to improve the stability of subsequent welding. The bristles attached to the outer surface of the rotating rollers are designed as an arc-shaped structure, and the tips of the bristles face the pipe. When the rotating rollers rotate at high speed, the centrifugal force will straighten the arc-shaped bristles to a certain extent. With the cooperation of the counterweight block and the baffle, as the centrifugal force of the counterweight block increases, the rotating roller is forced to move a certain distance along the direction of the pipe, and the slightly straightened bristles are squeezed onto the vertical section of the pipe. As the rotating rollers rotate, the arc surface and vertical surface of the pipe are polished and cleaned. Through the combination of the above structures, the edge of the pipe can be pretreated before welding, which indirectly improves the welding effect.

[0020] Bevel gear 2 is used to replace the driven wheel, and bevel gear 1 is used to replace the driving wheel. Under the action of the electromagnet, bevel gear 2 is pushed to squeeze bevel gear 1, thereby forcing bevel gear 1 to slide along the sliding groove under the action of the sliding block, thereby changing the spacing between the rotating rollers to meet the effect of cleaning pipes of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the clamping assembly of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the limit ring and the rotating ring of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the clamping part of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the bristles and the adhesive tape of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the rotating roller of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of the cavity of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the rotating rod of the present invention;

[0029] Fig. 9 It is a schematic diagram of the explosion structure of the pretreatment component of the present invention;

[0030] Fig.10 FIG. 2 is a schematic structural diagram of a second embodiment of the present invention.

[0031] In the figure: 1, bracket; 10, frame; 11, pipeline; 12, motor group; 13, threaded rod; 14, slide; 2, clamping assembly; 20, connecting part; 21, slider; 22, hydraulic cylinder; 23, limit ring; 24, swivel; 25, clamping part; 26, welding head; 3, pretreatment assembly; 30, electric telescopic rod; 31, double-axis motor; 32, connecting plate; 33, rotating roller; 34, fan blade; 35, adhesive tape; 36, bristles; 361, magnetic block; 37. Cavity; 38. Rotating rod; 381. Telescopic slot; 39. Counterweight; 40. Baffle; 41. Limiting slot; 42. Limiting ring; 43. Cavity; 44. Driven wheel; 45. Driving wheel; 46. Reserved slot; 47. Spring 1; 48. Guide block; 49. Guide slot; 50. Bevel gear 1; 51. Sliding slot; 52. Sliding block; 53. Spring 2; 54. Bevel gear 2; 55. Spring 3; 56. Transmission slot; 57. Transmission rod; 58. Electromagnet. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1

[0034] See also Figure 1-10The present invention provides a technical solution: a stainless steel pipe welding device for water conservancy, comprising a bracket 1, the bracket 1 is rectangular, and the number is two groups, the two groups are arranged on the ground, the upper end outer surface of the bracket 1 is fixedly connected with a frame 10 of a gantry structure design, the gantry design of the frame 10 as a whole is used to control the position of the clamping assembly 2 above the pipe 11, and the distance between the two groups of pipes to be welded 11 is convenient to change, and it is not affected by welding debris;

[0035] A combined motor is fixedly connected to the middle position of the frame 10. The combined motor is composed of two motor groups 12. The output end of the combined motor is located at the front and rear ends, and the output end is fixedly connected to a threaded rod 13. Both ends of the threaded rod 13 are provided with a clamping assembly 2 for clamping the pipe 11. The two groups of clamping assemblies 2 are controlled by the combined motor to change the distance, which is convenient for adjusting the position of the pipe 11 before welding the pipe 11.

[0036] The clamping assembly 2 is designed as a triangular structure as a whole, and has three groups of clamping parts 25 built in. The three groups of clamping parts 25 clamp and fix the pipe 11. The end of the clamping part 25 away from the pipe 11 is fixedly connected to the hydraulic cylinder 22, and the end of the hydraulic cylinder 22 away from the clamping part 25 is fixedly connected to the connecting part 20. The connecting part 20 is movably connected to the bracket 1. The three groups of clamping parts 25 can be controlled simultaneously to clamp pipes 11 of different sizes, thereby increasing the versatility of the equipment.

[0037] A pretreatment component 3 is located at the edge of the pipe 11 for welding. The pretreatment component 3 includes rotating rollers 33. The rotating rollers 33 are located at the end of the pipe 11 and are in two groups. One group of the two groups of rotating rollers 33 is located inside the pipe 11, and the other group is located outside the pipe 11. The annular outer surfaces are in contact with the pipe 11. Before welding, the surface of the pipe 11 will be cleaned and rust-removed to improve the connection strength during welding.

[0038] There are three groups of connecting parts 20, and the upper group of connecting parts 20 is threadedly connected to the threaded rod 13, and the ends of the connecting parts 20 located on the left and right sides away from the hydraulic cylinder 22 are fixedly connected with sliders 21, and the corresponding positions of the bracket 1 and the slider 21 are provided with slide grooves 14, and the slider 21 slides inside the slide groove 14. The adjacent positions of the three groups of connecting parts 20 are connected by rod bodies to form a triangular structure design, and the position of the connecting part 20 is changed by driving the threaded rod 13 through a combined motor. The design of the slider 21 and the slide groove 14 increases the stability of the clamping assembly 2 as a whole when sliding.

[0039] A limiting ring 23 with a semicircular ring structure is fixedly connected to the center position of the bracket 1. The limiting ring 23 is a semicircular structure to prevent debris generated during welding from accumulating on the inner surface of the limiting ring 23, thereby affecting the normal operation of the limiting ring 23. A swivel 24 is rotatably connected inside the limiting ring 23. A welding head 26 is fixedly connected to the inner surface of the swivel 24. The welding head 26 is fixedly connected to the inner surface of the swivel 24 in a telescopic manner as a whole, that is, one end of the electric telescopic rod 30 is fixedly connected to the welding head 26, and the other end is fixedly connected to the swivel 24. The pretreatment component 3 is fixedly connected to the inner surface of the swivel 24, and the two correspond to each other.

[0040] The pretreatment component 3 also includes an electric telescopic rod 30, one end of which is fixedly connected to the inner surface of the rotating ring 24, the upper end of the electric telescopic rod 30 is fixedly connected to a double-axis motor 31, both ends of the double-axis motor 31 are fixedly connected to a connecting plate 32, two groups of rotating rollers 33 are connected to the surface of the connecting plate 32, a cavity 43 is opened inside the connecting plate 32, the output end of the double-axis motor 31 is fixedly connected to a driving wheel 45, the annular outer surface of the driving wheel 45 contacts a driven wheel 44, the driven wheel 44 is fixedly connected to a rotating rod 38 at one end away from the double-axis motor 31, the driven wheel 44 is rotatably connected to the cavity 43 through a rotating shaft, and the rotating rod 38 is connected to the rotating roller 33;

[0041] The dual-axis motor 31 drives the driving wheel 45 to rotate, and the driving wheel 45 drives the driven wheel 44 to rotate, thereby rotating the rotating roller 33, and the bristles 36 cooperate to clean and polish the edge of the pipe 11 to be welded, thereby improving the cleanliness of the port of the pipe 11 and preventing the welding point from falling off due to foreign matter.

[0042] The annular outer surface of the rotating roller 33 is adhered with an adhesive tape 35, and the annular outer surface of the adhesive tape 35 is fixedly connected with bristles 36, and the tips of the bristles 36 are facing the direction of the pipe 11. The annular outer surface of the rotating roller 33 near one end of the connecting plate 32 is fixedly connected with fan blades 34. The number of the fan blades 34 is several groups, and they are distributed in an annular array around the rotating roller 33. The dust mist generated by cleaning is blown away while rotating. The bristles 36 can be switched as a whole by adhering to the adhesive tape 35. Nylon, stainless steel, and linen can be selected. The tips of the bristles 36 of any material point away from the dual-axis motor 31. First, the pipe 11 is clamped and fixed by the clamping part 25, and then the height of the dual-axis motor 31 is controlled by the electric telescopic rod 30 until the two groups of rotating rollers 33 are aligned with the inner surface of the pipe 11. Then, the position of the pipe 11 is controlled by the combined motor, and the pipe 11 is inserted into the gap between the two groups of rotating rollers 33. After completion, the bristles 36 are reset to a certain distance to straighten the bristles 36.

[0043] A cavity 37 is provided inside the rotating roller 33, and a telescopic groove 381 is provided on the annular outer surface of the rotating rod 38. A counterweight 39 is slidably connected inside the telescopic groove 381. The end of the counterweight 39 away from the connecting plate 32 is designed with an inclined structure. A baffle 40 is fixedly connected to the inner surface of the cavity 37, and the baffle 40 is aligned with the inclined surface. A spring 47 is fixedly connected between the counterweight 39 and the telescopic groove 381. A reserved groove 46 is provided at the corresponding position of the counterweight 39 and the spring 47. The spring 47 is located inside the reserved groove 46, which saves the space occupied by the spring 47. When the rotating rod 38 is in a state of high-speed rotation, it will The counterweight block 39 is driven to rotate at a high speed, forcing the counterweight block 39 to gradually move away from the telescopic slot 381 through centrifugal force, and the inclined surface of the counterweight block 39 contacts the baffle plate 40. As the counterweight block 39 moves away from the telescopic slot 381, the counterweight block 39 will squeeze the baffle plate 40, forcing the baffle plate 40 to drive the rotating roller 33 to move a certain distance in the direction of the pipe 11, so that the curved bristles 36 can act on the port section of the pipe 11, align it for cleaning, and improve the functionality of the bristles 36. Through the mutual cooperation of the above-mentioned structures, the rotating roller 33 can not only clean the curved surface of the pipe 11 through the bristles 36 when rotating, but also clean the vertical section of the pipe 11.

[0044] The end of the rotating rod 38 away from the driven wheel 44 is fixedly connected with a magnetic block 361, which pulls the rotating roller 33 to a certain extent to prevent the rotating roller 33 from sliding on its own. The inner wall of the end of the rotating roller 33 is made of magnetic metal. The magnetic block 361 is magnetically connected to the rotating roller 33. The rotating rod 38 passes through the rotating roller 33, and its annular outer surface is fixedly connected with a guide block 48. A guide groove 49 is provided at the position corresponding to the rotating roller 33 and the guide block 48. The setting of the guide block 48 and the guide groove 49 increases the restriction of the rotating roller 33 by the rotating rod 38, so that it can ensure that the torque can be transmitted during sliding.

[0045] Embodiment 2

[0046] The end of the rotating rod 38 away from the rotating roller 33 is fixedly connected to a bevel gear 50, and the end of the bevel gear 50 away from the rotating rod 38 is rotatably connected to a sliding block 52 through a rotating shaft. A sliding groove 51 is provided in the cavity 43 at a corresponding position to the sliding block 52, and the sliding block 52 is located inside the sliding groove 51, and a spring 2 53 is fixedly connected therebetween. A bevel gear 2 54 meshing with the bevel gear 50 is provided at the center position of the inner surface of the cavity 43, and the bevel gear 2 54 is made of a magnet. An electromagnet 58 is fixedly connected to the end of the connecting plate 32 away from the rotating roller 33, and the electromagnet 58 is magnetically connected to the bevel gear 2 54. In the present technical solution, the spacing between the two groups of rotating rollers 33 is adjustable, so as to adapt to pipes 11 of different thicknesses. When the electric When the magnet 58 is energized, it pushes the magnetic bevel gear 2 54 to move toward the rotating roller 33. The inclined surface of the bevel gear 2 54 will contact the inclined surface of the bevel gear 1 50, thereby forcing the bevel gear 2 54 to slide along the sliding groove 51 under the action of the sliding block 52, thereby increasing the spacing between the two groups of rotating rollers 33 to adapt to thicker pipes 11. Through the above-mentioned structural design, when the rotating rollers 33 first contact the inner wall of the pipe 11, the two groups of rotating rollers 33 on one side are in a state of maximum spacing. When the wall of the pipe 11 is between the two groups of rotating rollers 33, the electromagnet 58 is de-energized, and the two groups of rotating rollers 33 automatically move toward the wall of the pipe 11 under the traction of the spring 2 53. At the same time, the wall of the pipe 11 will squeeze the bristles 36, and the squeezing direction of the bristles 36 is along the bending direction of the bristles 36.

[0047] A transmission groove 56 is provided at the center position of the bevel gear 2 54, and a transmission rod 57 is slidably connected inside the transmission groove 56. The end of the transmission rod 57 away from the transmission groove 56 is fixedly connected to the output end of the dual-axis motor 31, and a limiting groove 41 is provided at the end of the connecting plate 32 close to the rotating roller 33. A limiting ring 42 is fixedly connected to the corresponding position of the rotating rod 38 and the limiting groove 41. The limiting groove 41 and the limiting ring 42 increase the stability of the rotating rod 38. The transmission groove 56 and the transmission rod 57 are both designed with a rectangular structure for transmitting torque and taking into account the telescopic function. A spring can also be fixedly connected to the end of the bevel gear 2 54 away from the transmission rod 57, and the spring is rotatably connected to the cavity 43.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] 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 stainless steel pipe welding device for water conservancy, comprising a bracket (1), wherein the bracket (1) is rectangular and is provided in two groups, the two groups are arranged on the ground, and a frame (10) with a gantry structure is fixedly connected to the outer surface of the upper end of the bracket (1); Features: A combined motor is fixedly connected to the middle position of the frame (10), the output ends of the combined motor are located at the front and rear ends, and the output ends are fixedly connected to threaded rods (13), and both ends of the threaded rod (13) are provided with clamping assemblies (2) for clamping the pipe (11); The clamping assembly (2) is designed as a triangular structure as a whole and has three groups of clamping parts (25) built therein. The three groups of clamping parts (25) clamp and fix the pipeline (11). One end of the clamping part (25) away from the pipeline (11) is fixedly connected to a hydraulic cylinder (22). One end of the hydraulic cylinder (22) away from the clamping part (25) is fixedly connected to a connecting part (20). The connecting part (20) is movably connected to the bracket (1). A pretreatment component (3), the pretreatment component (3) is located at the edge of the pipe (11) for welding, the pretreatment component (3) comprises rotating rollers (33), the rotating rollers (33) are located at the end of the pipe (11), and the number of the rotating rollers (33) is in two groups, one group of the two groups of rotating rollers (33) is located inside the pipe (11), and the other group is located outside the pipe (11), and the annular outer surfaces are in contact with the pipe (11), and the surface of the pipe (11) is cleaned and rust-removed before welding.

2. The stainless steel pipe welding device for water conservancy according to claim 1 is characterized in that: The number of the connecting parts (20) is three groups, and the connecting parts (20) located in the upper group are threadedly connected to the threaded rod (13), and the ends of the connecting parts (20) located on the left and right sides away from the hydraulic cylinder (22) are fixedly connected with a slider (21), and the corresponding positions of the bracket (1) and the slider (21) are provided with a sliding groove (14), and the slider (21) is located inside the sliding groove (14) and slides, and the adjacent positions of the three groups of connecting parts (20) are connected by a rod body to form a triangular structure design.

3. The stainless steel pipe welding device for water conservancy according to claim 1 is characterized in that: A limiting ring (23) with a semicircular ring structure is fixedly connected to the center of the bracket (1); a swivel (24) is rotatably connected inside the limiting ring (23); a welding head (26) is fixedly connected to the inner surface of the swivel (24); and the pretreatment component (3) is fixedly connected to the inner surface of the swivel (24), and the two correspond to each other.

4. The stainless steel pipe welding device for water conservancy according to claim 3 is characterized in that: The pretreatment component (3) further comprises an electric telescopic rod (30), one end of which is fixedly connected to the inner surface of the rotating ring (24), the upper end of which is fixedly connected to a double-axis motor (31), both ends of which are fixedly connected to connecting plates (32), a cavity (43) is provided inside the connecting plate (32), the output end of the double-axis motor (31) is fixedly connected to a driving wheel (45), the annular outer surface of the driving wheel (45) contacts a driven wheel (44), the end of the driven wheel (44) away from the double-axis motor (31) is fixedly connected to a rotating rod (38), and the rotating rod (38) is connected to a rotating roller (33).

5. The stainless steel pipe welding device for water conservancy according to claim 4 is characterized in that: The annular outer surface of the rotating roller (33) is adhered with an adhesive tape (35), the annular outer surface of the adhesive tape (35) is fixedly connected with bristles (36), and the annular outer surface of the rotating roller (33) close to one end of the connecting plate (32) is fixedly connected with fan blades (34), and the fan blades (34) are in a plurality of groups and are distributed in an annular array around the rotating roller (33).

6. The stainless steel pipe welding device for water conservancy according to claim 4 is characterized in that: A cavity (37) is provided inside the rotating roller (33); a telescopic groove (381) is provided on the annular outer surface of the rotating rod (38); a counterweight (39) is slidably connected inside the telescopic groove (381); the end of the counterweight (39) away from the connecting plate (32) is designed as an inclined structure; a baffle (40) is fixedly connected to the inner surface of the cavity (37), and the baffle (40) is aligned with the inclined surface; a spring (47) is fixedly connected between the counterweight (39) and the telescopic groove (381).

7. The stainless steel pipe welding device for water conservancy according to claim 6 is characterized in that: The end of the rotating rod (38) away from the driven wheel (44) is fixedly connected to a magnetic block (361); the inner wall of the end of the rotating roller (33) is made of magnetic metal; the magnetic block (361) is magnetically connected to the rotating roller (33); the rotating rod (38) passes through the rotating roller (33) and its annular outer surface is fixedly connected to a guide block (48); guide grooves (49) are provided at positions corresponding to the rotating roller (33) and the guide block (48).

8. The stainless steel pipe welding device for water conservancy according to claim 4 is characterized in that: The end of the rotating rod (38) away from the rotating roller (33) is fixedly connected to a bevel gear 1 (50), and the end of the bevel gear 1 (50) away from the rotating rod (38) is rotatably connected to a sliding block (52) through a rotating shaft. A sliding groove (51) is provided in the cavity (43) at a position corresponding to the sliding block (52). The sliding block (52) is located inside the sliding groove (51), and a spring 2 (53) is fixedly connected therebetween. A bevel gear 2 (54) meshing with the bevel gear 1 (50) is provided at the center position of the inner surface of the cavity (43). An electromagnet (58) is fixedly connected to the end of the connecting plate (32) away from the rotating roller (33), and the electromagnet (58) is magnetically connected to the bevel gear 2 (54).

9. The stainless steel pipe welding device for water conservancy according to claim 8, characterized in that: A transmission groove (56) is provided at the center of the bevel gear (54), a transmission rod (57) is slidably connected inside the transmission groove (56), an end of the transmission rod (57) away from the transmission groove (56) is fixedly connected to the output end of the dual-axis motor (31), a limiting groove (41) is provided at one end of the connecting plate (32) close to the rotating roller (33), and a limiting ring (42) is fixedly connected to the corresponding position of the rotating rod (38) and the limiting groove (41).

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