Stainless steel pipe inner wall coating processing device

Abstract

The utility model discloses a stainless steel pipe inner wall coating processing device which comprises a rack, a hollow pipe is installed in the rack, a transverse driving mechanism used for driving the hollow pipe to move left and right is installed in the rack, a coating device is further arranged at the left end of the hollow pipe, and a hose connected to the coating device is installed in the hollow pipe. The inner wall spraying device comprises a hollow pipe and further comprises an extension pipe, a ring sleeve is integrally formed at the left end of the extension pipe, the outer diameter of the ring sleeve is matched with the inner diameter of the hollow pipe, the extension pipe can be additionally arranged on the hollow pipe, so that the inner wall spraying device can spray the inner wall of a long steel pipe, and the universality of the inner wall spraying device is improved; an auxiliary supporting assembly is further arranged, so that the situation that the rotating shaft or the concave wheel is subjected to overlarge pressure when the hollow pipe extends to the leftmost position or the rightmost position is avoided, and the service life of the device is prolonged. According to the utility model, the inner wall of the steel pipe is treated by a roller brush rotary coating method, and a spray head is not used any more, so that blockage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe processing technology, and in particular to a coating processing device for the inner wall of stainless steel pipes. Background Technology

[0002] To resist corrosion from the medium and reduce scaling and deposits, steel pipes are usually coated on their inner walls after production to ensure the safety of the pipeline system and extend its service life.

[0003] Currently, equipment for painting the inner wall of steel pipes can generally only perform inner wall processing on steel pipes within a certain length. For example, as shown in the automatic painting device for the inner wall of small-diameter spiral steel pipe disclosed in application number 202120453210.1, this device is limited by the length of the lead screw and can only perform inner wall painting on steel pipes with a length less than the lead screw. Its versatility is poor, so it needs to be improved. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a stainless steel pipe inner wall coating processing device to solve the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a stainless steel pipe inner wall coating processing device, including a frame, a hollow pipe installed in the frame, a transverse drive mechanism for driving the hollow pipe to move left and right in the frame, a coating device is also provided at the left end of the hollow pipe, and a flexible tube connected to the coating device is installed in the hollow pipe.

[0006] It also includes an extension tube, the left end of which is integrally formed with a ring, and the outer diameter of the ring is adapted to the inner diameter of the hollow tube so that the extension tube can be inserted into the hollow tube to the left. It also includes a No. 1 bolt for locking the relative position of the hollow tube and the ring.

[0007] Preferably, the frame is provided with a drive groove for accommodating the hollow tube, and the transverse drive mechanism includes rotating shafts rotatably connected to a matrix distributed in the drive groove. Each rotating shaft is provided with a concave wheel, and the hollow tube is clamped between each of the concave wheels. The frame is also equipped with a transverse motor, and the first output shaft of the transverse motor is connected to one of the rotating shafts.

[0008] Preferably, the coating device includes a turntable rotatably connected to the left end of the hollow tube, telescopic rods are provided at equal angles on the curved surface of the turntable, and springs are built into the telescopic rods. A roller brush is installed at the end of the telescopic rods. A rotary motor for driving the turntable to rotate is installed on the hollow tube, and the device also includes a liquid dispensing mechanism.

[0009] Preferably, the telescopic rod includes a sleeve rod and a movable rod. The sleeve rod is fixed on the turntable, and the movable rod is slidably connected inside the sleeve rod and fixedly connected to the roller brush. A spring connected to the movable rod is provided inside the sleeve rod, and an electromagnet capable of attracting the movable rod is provided inside the sleeve rod.

[0010] Preferably, the liquid dispensing mechanism includes a curved tube installed inside the hollow tube, the vertical portion of the curved tube extending downward through the hollow tube, and the horizontal portion of the curved tube located inside the hollow tube and connected to the flexible tube.

[0011] Preferably, a ring plate is fixed on the curved surface of the turntable, and a friction groove is provided on the right side of the ring plate. A friction wheel is installed at the end of the second output shaft in the rotary motor, and the friction wheel is attached to the curved surface of the friction groove.

[0012] Preferably, it also includes an auxiliary support assembly, which includes two arc-shaped panels that are sleeved on the hollow tube and distributed vertically. The two arc-shaped panels are locked together by a No. 2 bolt. A vertical rod is fixed on the lower arc-shaped panel. A lifting sleeve is sleeved on the vertical rod, and a support wheel is installed at the lower end of the lifting sleeve. Multiple No. 1 threaded holes are arranged vertically and vertically at equal intervals inside the vertical rod. A No. 1 through hole is provided inside the lifting sleeve. A No. 3 bolt is screwed into one of the No. 1 threaded holes in the No. 1 through hole.

[0013] Preferably, the hollow tube has two through holes on its front and rear sides, and the annulus has two threaded holes on its front and rear sides. The bolt is inserted into the two through holes and threaded into the two threaded holes.

[0014] Preferably, the right end face of the extension tube is further provided with an annular groove adapted to the ring sleeve, and the front and rear sides of the annular groove are provided with a third through hole of the same specification as the second through hole.

[0015] Preferably, limit plates are provided at equal distances on the left and right sides of the outer curved front edges of the hollow tube and the extension tube, a fixing plate is fixed on the front side of the drive groove, and a sliding groove that is used to accommodate the limit plates and is open on both sides is provided in the fixing plate.

[0016] This utility model provides a stainless steel pipe inner wall coating processing device, which has the following beneficial effects:

[0017] The hollow tube in this invention can be fitted with an extension tube, so that the inner wall of a longer steel pipe can be sprayed, thereby improving the versatility of this invention.

[0018] This utility model is also provided with an auxiliary support component to avoid excessive pressure on the shaft or concave wheel when the hollow tube extends to the leftmost or rightmost position, thereby improving the service life of this utility model.

[0019] This invention uses a roller brush to coat the inner wall of a steel pipe, eliminating the need for a spray nozzle and preventing clogging. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the appearance of this utility model;

[0021] Figure 2 This is a schematic diagram of the appearance of the extension tube in this utility model;

[0022] Figure 3 yes Figure 1 Schematic diagram of the structure at the left end of the hollow tube;

[0023] Figure 4 This is a schematic diagram of the structure of the extension tube inserted into the hollow tube in this utility model (view from top).

[0024] Figure 5 yes Figure 1 Top view of the central support structure.

[0025] In the picture:

[0026] 11. Stand; 12. Hollow tube; 13. Flexible hose; 14. Extension tube; 15. Ring sleeve; 16. Ring groove; 17. No. 1 bolt; 21. Drive groove; 22. Rotating shaft; 23. Concave wheel; 31. Turntable; 32. Telescopic rod; 33. Roller brush; 34. Rotary motor; 35. Bend; 36. Ring plate; 37. Friction wheel; 41. Arc panel; 42. Upright pole; 43. Lifting sleeve; 44. Support wheel; 51. Limiting plate; 52. Fixing plate; 61. Sleeve rod; 62. Movable rod. Detailed Implementation

[0027] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Reference Figures 1-5 According to an embodiment of the stainless steel pipe inner wall coating processing device of the present invention, it includes a frame 11, a hollow tube 12 is installed in the frame 11, a transverse drive mechanism for driving the hollow tube 12 to move left and right is installed in the frame 11, a coating device is also provided at the left end of the hollow tube 12, a flexible hose 13 connected to the coating device is installed in the hollow tube 12, the flexible hose 13 is connected to the paint in the material cylinder through a pump, when the pump is working, the paint is drawn out and injected into the flexible hose 13, and then coated on the inner wall of the steel pipe through the coating device.

[0032] In addition, since the hollow tube 12 needs to be inserted into the inner wall of the steel pipe for coating work, in order to make the stainless steel pipe inner wall coating processing device adaptable to longer steel pipes, it also includes an extension tube 14. The left end of the extension tube 14 is integrally formed with a ring 15, and the outer diameter of the ring 15 is adapted to the inner diameter of the hollow tube 12, so that the extension tube 14 can be inserted into the hollow tube 12 to the left. It also includes a first bolt 17 for locking the relative position of the hollow tube 12 and the ring 15.

[0033] In this embodiment, the frame 11 is provided with a drive groove 21 for accommodating the hollow tube 12. The transverse drive mechanism includes rotating shafts 22 rotatably connected to a matrix distributed within the drive groove 21. Concave wheels 23 are respectively provided on the rotating shafts 22. The hollow tube 12 is clamped between each of the concave wheels 23. The frame 11 is also equipped with a transverse motor. The first output shaft of the transverse motor is connected to one of the rotating shafts 22.

[0034] When the transverse motor is powered on, it drives the rotating shaft 22 and the concave wheel 23, thereby causing the hollow tube 12, which is clamped from above and below, to move left and right. If the extension tube 14 is installed on the hollow tube 12, when the hollow tube 12 is fully inserted into the steel tube on the left side, the concave wheel 23 will clamp the extension tube 14 and continue to drive the hollow tube 12 to move left and right to perform the coating work.

[0035] In order to prevent the upper and lower concave wheels 23 from interfering with the first bolt 17, the first bolt 17 is installed as follows: the front and rear sides of the hollow tube 12 are respectively provided with second through holes, and the front and rear sides of the ring sleeve 15 are provided with second threaded holes. The first bolt 17 is inserted into the second through hole and threadedly connected to the second threaded hole.

[0036] To prevent the hollow tube 12 and the extension tube 14 from rotating during the left-right delivery process by the concave wheel 23, limit plates 51 are provided at equal distances on the left and right sides of the outer curved front edge of the hollow tube 12 and the extension tube 14. A fixing plate 52 is fixedly provided on the front side of the drive groove 21, and a sliding groove for accommodating the limit plates 51 and extending left and right is provided in the fixing plate 52. When the hollow tube 12 and the extension tube 14 move left and right, the limit plates 51 will slide left and right in the sliding groove, so that the hollow tube 12 and the extension tube 14 will not be offset in angle, and the distance between any two limit plates 51 will not be greater than the left and right width of the sliding groove.

[0037] In this embodiment, the coating device includes a turntable 31 rotatably connected to the left end of the hollow tube 12. Telescopic rods 32 are evenly spaced on the curved surface of the turntable 31, and springs are built into the telescopic rods 32. A roller brush 33 is mounted at the end of the telescopic rods 32. A rotary motor 34 for driving the turntable 31 to rotate is mounted on the hollow tube 12. The device also includes a liquid dispensing mechanism, which includes a bent tube 35 installed inside the hollow tube 12. The vertical portion of the bent tube 35 extends downward through the hollow tube 12, and the horizontal portion of the bent tube 35 is located inside the hollow tube 12 and connected to the flexible tube 13. The rotary motor 34 drives the turntable 31 by means of a ring plate 36 fixed on the curved surface of the turntable 31, and a friction groove provided on the right side of the ring plate 36. A friction wheel 37 is installed at the end of the second output shaft of the rotary motor 34, and the friction wheel 37 is attached to the curved surface of the friction groove. When the rotary motor 34 is energized, the friction wheel 37 will drive the ring plate 36 to rotate, thereby driving the turntable 31 and the roller brush 33 to rotate. Since the roller brush 33 can be attached to the inner wall of the steel pipe, during the movement of the hollow tube 12 to the right, the roller brush 33 can rely on its own rotation and the rotation relative to the hollow tube 12 to evenly spread the paint flowing into the steel pipe through the bend 35 onto the inner wall of the steel pipe.

[0038] It should be noted that the friction wheel 37 can be replaced with a gear, and the ring plate 36 can be fitted with a gear ring to achieve the same effect.

[0039] In a second embodiment of the stainless steel pipe inner wall coating processing device, to prevent the rotating shaft 22 and the concave wheel 23 from being subjected to excessive pressure when the hollow pipe 12 moves to the leftmost position after the extension pipe 14 is installed, an auxiliary support assembly is also included. The auxiliary support assembly includes two arc-shaped panels 41 that are sleeved on the hollow pipe 12 and distributed vertically. The two arc-shaped panels 41 are locked together by a No. 2 bolt. A vertical rod 42 is fixed on the lower arc-shaped panel 41. A lifting sleeve 43 is sleeved on the vertical rod 42, and a support wheel 44 is installed at the lower end of the lifting sleeve 43. Multiple No. 1 threaded holes are arranged vertically and vertically at equal intervals in the vertical rod 42, and a No. 1 through hole is arranged in the lifting sleeve 43. A No. 3 bolt is screwed into one of the No. 1 threaded holes in the No. 1 through hole.

[0040] The operator can adjust the upper and lower positions of the lifting sleeve 43 according to the inner diameter of the steel pipe, and then lock it with the No. 3 bolt so that the support wheel 44 can abut against the lower edge of the inner wall of the steel pipe and support the hollow tube 12, so as to prevent the left end of the hollow tube 12 from falling down and causing excessive pressure on the rotating shaft 22 and the concave wheel 23.

[0041] Correspondingly, if the extension tube 14 is installed on the hollow tube 12, the auxiliary support assembly can also be installed on the extension tube 14. The support wheel 44 in the auxiliary support assembly installed on the extension tube 14 can abut against the ground to prevent the right end of the extension tube 14 from falling when the hollow tube 12 is at the far right, which would cause excessive pressure on the concave wheel 23. Furthermore, the auxiliary support assembly installed on the extension tube 14 can be without lifting adjustment to reduce costs.

[0042] Furthermore, in this embodiment, multiple extension tubes 14 can be provided, and the extension tubes 14 can be connected left and right. The right end face of the extension tube 14 is also provided with an annular groove 16 that is adapted to the ring sleeve 15. The front and rear sides of the annular groove 16 are provided with a third through hole of the same specification as the second through hole. That is, each extension tube 14 can also be connected by the first bolt 17.

[0043] In addition, the telescopic rod 32 includes a sleeve rod 61 and a movable rod 62. The sleeve rod 61 is fixed on the turntable 31, and the movable rod 62 is slidably connected inside the sleeve rod 61 and fixedly connected to the roller brush 33. A spring connected to the movable rod 62 is provided inside the sleeve rod 61, and an electromagnet capable of attracting the movable rod 62 is provided inside the sleeve rod 61.

[0044] Specific steel pipe spraying process:

[0045] First, the steel pipe is supported by a bracket or other support to position it on the left side of the stainless steel pipe inner wall coating processing device, and to make the steel pipe coaxial with the hollow pipe 12. Then, the operator adjusts the vertical distance of the lifting sleeve 43 according to the length and inner diameter of the steel pipe, and decides whether to install the extension pipe 14.

[0046] After the above preparations are completed, the workers drive the hollow tube 12 to move to the left using the transverse motor. During this process, the electromagnet is energized so that the movable rod 62 retracts into the sleeve rod 61 to prevent the roller brush 33 from hitting the right end of the steel pipe.

[0047] When the roller brush 33 moves to the left edge of the steel pipe, the electromagnet is de-energized, allowing the roller brush 33 to adhere to the inner wall of the steel pipe under the action of the spring. At this time, the rotary motor 34 is energized to drive the turntable 31 to rotate. Then, the concave wheel 23 drives the hollow tube 12 or the extension tube 14 to move to the right. Simultaneously, liquid is discharged from the bend 35. The coating material pressed into the hose 13 by the pump will flow through the bend 35 to the lower edge of the inner wall of the steel pipe. Then, during the movement of the hollow tube 12 to the right, the rotating turntable 31 will use the roller brush 33 to evenly coat the coating material onto the inner wall of the steel pipe.

[0048] It should be noted that in the above process, since the bent pipe 35 is still a certain distance from the left edge of the steel pipe when it is on the far left, if there is uneven coating on the left edge of the inner wall of the steel pipe, the hollow pipe 12 only needs to move back and forth a certain number of times at that point. Also, the pump needs to be turned off in advance when the bent pipe 35 is detached from the steel pipe to the right to avoid wasting coating.

[0049] Furthermore, a counterweight is provided inside the platform 11, and extension plates (not shown in the figure) are provided on the left and right sides of the platform 11 to prevent the platform 11 from tipping over.

[0050] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A stainless steel pipe inner wall coating processing device, comprising a frame (11), wherein a hollow pipe (12) is installed inside the frame (11), characterized in that: The frame (11) is equipped with a transverse drive mechanism for driving the hollow tube (12) to move left and right. The left end of the hollow tube (12) is also equipped with a coating device. The hollow tube (12) is equipped with a flexible hose (13) connected to the coating device. It also includes an extension tube (14), the left end of which is integrally formed with a ring (15), and the outer diameter of the ring (15) is adapted to the inner diameter of the hollow tube (12) so that the extension tube (14) can be inserted into the hollow tube (12) to the left. It also includes a No. 1 bolt (17) for locking the relative position of the hollow tube (12) and the ring (15).

2. The stainless steel pipe inner wall coating processing device according to claim 1, characterized in that: The frame (11) is provided with a drive groove (21) for accommodating the hollow tube (12). The transverse drive mechanism includes rotating shafts (22) that are rotatably connected to the matrix distribution within the drive groove (21). Concave wheels (23) are respectively provided on the rotating shafts (22). The hollow tube (12) is clamped between each of the concave wheels (23). The frame (11) is also equipped with a transverse motor. The first output shaft of the transverse motor is connected to one of the rotating shafts (22).

3. The stainless steel pipe inner wall coating processing device according to claim 1, characterized in that: The coating device includes a turntable (31) rotatably connected to the left end of the hollow tube (12), a telescopic rod (32) is provided at equal angles on the curved surface of the turntable (31), and a spring is built into the telescopic rod (32), and a roller brush (33) is installed at the end of the telescopic rod (32). A rotary motor (34) for driving the turntable (31) to rotate is installed on the hollow tube (12), and a liquid dispensing mechanism is also included.

4. The stainless steel pipe inner wall coating processing device according to claim 3, characterized in that: The telescopic rod (32) includes a sleeve rod (61) and a movable rod (62). The sleeve rod (61) is fixed on the turntable (31). The movable rod (62) is slidably connected inside the sleeve rod (61) and fixedly connected to the roller brush (33). A spring connected to the movable rod (62) is provided inside the sleeve rod (61), and an electromagnet capable of attracting the movable rod (62) is provided inside the sleeve rod (61).

5. The stainless steel pipe inner wall coating processing device according to claim 3, characterized in that: The liquid dispensing mechanism includes a bent tube (35) installed inside the hollow tube (12), with the vertical portion of the bent tube (35) extending downward through the hollow tube (12) and the horizontal portion of the bent tube (35) located inside the hollow tube (12) and connected to the flexible tube (13).

6. The stainless steel pipe inner wall coating processing device according to claim 3, characterized in that: A ring plate (36) is fixed on the curved surface of the turntable (31), and a friction groove is provided on the right side of the ring plate (36). A friction wheel (37) is installed at the end of the second output shaft in the rotary motor (34), and the friction wheel (37) is attached to the curved surface of the friction groove.

7. The stainless steel pipe inner wall coating processing device according to claim 1, characterized in that: It also includes an auxiliary support assembly, which includes two arc panels (41) that are sleeved on the hollow tube (12) and distributed vertically. The two arc panels (41) are locked together by a No. 2 bolt. A vertical rod (42) is fixed on the lower arc panel (41). A lifting sleeve (43) is sleeved on the vertical rod (42). A support wheel (44) is installed at the lower end of the lifting sleeve (43). Multiple No. 1 threaded holes are arranged vertically and vertically at equal intervals in the vertical rod (42). A No. 1 through hole is arranged in the lifting sleeve (43). A No. 3 bolt is screwed into one of the No. 1 threaded holes in the No. 1 through hole.

8. The stainless steel pipe inner wall coating processing device according to claim 1, characterized in that: The hollow tube (12) has two through holes on its front and rear sides respectively, and the ring sleeve (15) has two threaded holes on its front and rear sides. The bolt (17) is inserted into the two through holes and threaded into the two threaded holes.

9. A stainless steel pipe inner wall coating processing device according to claim 8, characterized in that: The right end face of the extension tube (14) is also provided with an annular groove (16) that is adapted to the ring sleeve (15), and the front and rear sides of the annular groove (16) are provided with a third through hole of the same specification as the second through hole.

10. A stainless steel pipe inner wall coating processing device according to claim 2, characterized in that: Limiting plates (51) are provided at equal distances on the left and right sides of the outer curved front edge of the hollow tube (12) and the extension tube (14). A fixing plate (52) is fixed on the front side of the drive groove (21), and a sliding groove is provided in the fixing plate (52) to accommodate the limiting plate (51) and to pass through the left and right sides.

Images