Corrosion-resistant spraying device for repaired mouth in spiral steel pipe welding pipeline

Abstract

The utility model relates to the technical field of pipeline inner joint coating spraying, and discloses a spiral steel pipe welding pipeline inner joint coating anti-corrosion spraying device which comprises a coating box. The mounting base is controlled to be embedded into the pipeline, four positioning bolts are further rotated to enable the wheel frame to move along the limiting frame under the action of the sliding columns, then the rolling wheels are controlled to be tightly attached to the inner wall of the pipeline, after the rolling wheels are adjusted, the telescopic rods are further controlled to be connected with the retaining rings, the mounting base is made to move by controlling the telescopic rods, and the hard pipe is made to move to a to-be-sprayed area; the problem that an existing device cannot conduct spraying on a long pipeline is further solved, the hard pipe and the inclined pipe are rotationally connected through the buckling base, the gear rings are installed on the inclined pipe and the output end of the driving motor correspondingly, and the gear rings are in meshed connection with the gear. And the gear ring rotates synchronously to realize rotation of the inclined pipe, so that the spraying range of the inclined pipe is annular, and uniform anti-corrosion spraying of a pipeline joint coating is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of pipeline internal repair spraying technology, specifically to an anti-corrosion spraying device for internal repair of spiral welded steel pipes. Background Technology

[0002] The spiral welded pipe internal repair anti-corrosion spraying device is an automated equipment specifically designed for anti-corrosion treatment of the inner wall repair area after spiral welded pipes. It mainly uses directional spraying technology to repair or enhance the anti-corrosion coating on the weld area, which can significantly improve the efficiency of anti-corrosion construction after spiral welded pipes, while reducing the safety risks of manual operation.

[0003] Chinese patent CN217683917U discloses an anti-corrosion spraying device for internal repair of spiral welded steel pipes. The device includes an industrial gas cylinder with a flexible hose at its outlet. A straight pipe connects to the other end of the hose, and a nozzle is installed at the other end of the straight pipe. A powder hopper is connected to the middle of the hose. The pipe to be repaired is positioned outside the nozzle, and an electromagnetic heater is located below it. An annular induction coil is installed at the output end of the electromagnetic heater, positioned outside the pipe to be repaired. Polyethylene powder is sprayed onto the inner wall of the pipe. Upon contact with the heated pipe, the powder rapidly melts and adheres to the inner side of the pipe. After the pipe cools, the polyethylene and the pipe are bonded together, thus achieving rapid repair of the pipe lining.

[0004] The above-mentioned device has the effect of quickly repairing the inner lining of pipes. However, in actual application, the area of ​​the pipe to be sprayed may be located in a deep position, which makes the existing device unable to meet its spraying requirements. At the same time, when spraying the joints of pipes with different inner diameters, uneven spraying occurs, which affects the quality of the pipes. Therefore, it is necessary to provide a joint repair and anti-corrosion spraying device for spiral welded steel pipes. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-corrosion spraying device for the inner joint of spiral welded steel pipes, so as to solve the problems that the existing devices cannot meet the joint spraying needs of long pipes, and that uneven spraying affects the quality of the pipes.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a spiral welded steel pipe internal repair and anti-corrosion spraying device, comprising a paint tank, a pump fixedly installed at one end of the paint tank, a conduit fixedly installed at the output end of the pump, a rigid pipe fixedly installed at one end of the conduit, and a moving mechanism provided on the rigid pipe; the moving mechanism includes a mounting base, the mounting base being fixedly installed on the outside of the rigid pipe, and two positioning frames fixedly installed on both the upper and lower sides of the mounting base, limit frames fixedly installed on both sides of the positioning frames, sliding columns being slidably installed inside the limit frames, a wheel frame being fixedly installed between the two sliding columns, two rollers being rotatably installed side-by-side on the wheel frame, and a positioning bolt being rotatably installed on the wheel frame and threaded onto the positioning frame; a buckle is fixedly installed side-by-side on one side of the mounting base, and a telescopic rod is fastened to the buckle.

[0007] Preferably, the positioning frame and the limiting frame are both fixedly mounted on the mounting base at an angle, and the two rollers are located on the same horizontal line.

[0008] Preferably, a hook is fixedly installed at one end of the telescopic rod, and the buckle is adapted to the hook.

[0009] Preferably, a spraying mechanism is provided at one end of the rigid tube. The spraying mechanism includes a fastener, which is fixedly installed at one end of the rigid tube. An inclined tube is rotatably installed on the fastener. A gear ring is fixedly installed on the outside of the inclined tube. A drive motor is fixedly installed inside the mounting base. A gear is fixedly installed on the output end of the drive motor.

[0010] Preferably, a sealing ring is fixedly installed between the buckle and the inclined tube, a nozzle is fixedly installed at one end of the inclined tube, and the inner diameter of the inclined tube is smaller than the inner diameter of the rigid tube.

[0011] Preferably, the gear ring meshes with the gear, and the inner diameters of the gear ring and the gear are the same.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1) This anti-corrosion spraying device for the inner joint of spiral welded steel pipes controls the installation seat to embed into the pipe, and further rotates four positioning bolts to make the wheel frame move along the limit frame under the action of the sliding column, thereby controlling the roller to fit tightly against the inner wall of the pipe. After the roller is adjusted, the telescopic rod is further controlled to connect with the buckle. By controlling the telescopic rod, the installation seat is moved, and the rigid pipe is moved to the area to be sprayed, thus solving the problem that the existing device cannot spray longer pipes.

[0014] 2) This anti-corrosion spraying device for the inner joint of spiral welded steel pipe connects the rigid pipe and the inclined pipe through a fastener. Gear rings are installed on the inclined pipe and the output end of the drive motor, respectively, and the gear rings are meshed with the gears. When in use, when the drive motor is controlled to rotate the gears, the gear rings will rotate synchronously and realize the rotation of the inclined pipe, thereby making the spraying range of the inclined pipe annular, which facilitates uniform anti-corrosion spraying of the pipe joint. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the anti-corrosion spraying device for the inner joint of the spiral steel pipe welded pipeline in this embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional view of the positioning frame and the limiting frame in an embodiment of the present utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the moving mechanism in an embodiment of the present utility model;

[0018] Figure 4 This is a cross-sectional view of the buckle in an embodiment of the present invention.

[0019] In the diagram: 1. Paint tank; 2. Pump; 3. Conduit; 4. Rigid pipe; 5. Moving mechanism; 501. Mounting base; 502. Positioning frame; 503. Limiting frame; 504. Sliding column; 505. Wheel frame; 506. Roller; 507. Positioning bolt; 508. Buckle; 509. Telescopic rod; 6. Spraying mechanism; 601. Buckle seat; 602. Inclined tube; 603. Gear ring; 604. Drive motor; 605. Gear. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] Combination Figures 1-3A spiral welded steel pipe internal repair and anti-corrosion spraying device includes a paint tank 1. A pump 2 is fixedly installed at one end of the paint tank 1. A conduit 3 is fixedly installed at the output end of the pump 2. A rigid pipe 4 is fixedly installed at one end of the conduit 3. A moving mechanism 5 is provided on the rigid pipe 4. The moving mechanism 5 includes a mounting base 501. The mounting base 501 is fixedly installed on the outside of the rigid pipe 4. Two positioning frames 502 are fixedly installed on the upper and lower sides of the mounting base 501. Limiting frames 503 are fixedly installed on both sides of the positioning frames 502. Sliding columns 504 are slidably installed inside the limiting frames 503. A wheel frame 505 is fixedly installed between the two sliding columns 504. Two rollers 506 are rotatably installed in parallel on the wheel frame 505. A positioning bolt 507 is rotatably installed on the wheel frame 505 and threaded onto the positioning frame 502. A buckle 508 is fixedly installed in parallel on one side of the mounting base 501. A telescopic rod 509 is fastened to the buckle 508.

[0023] The positioning frame 502 and the limiting frame 503 are both fixedly installed on the mounting base 501 at an angle. The two rollers 506 are located on the same horizontal line. In use, the mounting base 501 is embedded into the pipe and the four positioning bolts 507 are rotated respectively, so that the rollers 506 are tightly attached to the inner wall of the pipe under the support of the positioning bolts 507. Due to the installation method and angle of the rollers 506, the mounting base 501 and the rigid pipe 4 can be moved along the pipe direction. One end of the telescopic rod 509 is fixedly installed with a hook, and the buckle 508 is adapted to the hook. When the telescopic rod 509 and the buckle 508 are matched and connected, the forward and backward movement of the mounting base 501 can be controlled by the telescopic rod 509.

[0024] Example 2

[0025] See Figure 4 A spraying mechanism 6 is provided at one end of the rigid pipe 4. The spraying mechanism 6 includes a buckle 601, which is fixedly installed at one end of the rigid pipe 4. An inclined pipe 602 is rotatably installed on the buckle 601. A gear ring 603 is fixedly installed on the outside of the inclined pipe 602. A drive motor 604 is fixedly installed inside the mounting base 501. A gear 605 is fixedly installed on the output end of the drive motor 604.

[0026] A sealing ring is fixedly installed between the buckle 601 and the inclined tube 602. The sealing ring can ensure the tightness of the connection between the buckle 601 and the inclined tube 602. A nozzle is fixedly installed at one end of the inclined tube 602. The inner diameter of the inclined tube 602 is smaller than the inner diameter of the rigid tube 4, so that the paint can be further compressed and sprayed out at high speed. The toothed ring 603 is meshed with the gear 605, and the inner diameters of the toothed ring 603 and the gear 605 are the same. When the drive motor 604 is controlled to rotate the gear 605, the toothed ring 603 will rotate in the opposite direction to the inclined tube 602 with the gear 605. By controlling the inner diameters of the toothed ring 603 and the gear 605 to be the same, the rotation speed of the inclined tube 602 can be controlled more accurately, which is convenient for anti-corrosion spraying on the inner joint of the pipe.

[0027] In actual operation, the mounting base 501 is embedded inside the pipe and the four positioning bolts 507 are rotated respectively, so that the roller 506 is tightly attached to the inner wall of the pipe under the support of the positioning bolts 507. Due to the installation method and angle of the roller 506, the mounting base 501 and the rigid pipe 4 can move along the pipe direction. One end of the telescopic rod 509 is fixedly installed with a hook, and the buckle 508 is adapted to the hook. When the telescopic rod 509 and the buckle 508 are matched and connected, the forward and backward movement of the mounting base 501 can be controlled by the telescopic rod 509.

[0028] By fixing a gear ring 603 and a gear 605 to the output ends of the inclined tube 602 and the drive motor 604 respectively, and making the gear ring 603 mesh with the gear 605, when the drive motor 604 is controlled to rotate the gear 605, the gear ring 603 will rotate in the opposite direction to the inclined tube 602 with the gear 605. By controlling the inner diameter of the gear ring 603 and the gear 605 to be the same, the rotation speed of the inclined tube 602 can be controlled more accurately, which is convenient for anti-corrosion spraying on the inner joint of the pipe.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant spraying device for the inner joint of a spiral welded steel pipe, comprising a paint tank (1), a pump (2) fixedly installed at one end of the paint tank (1), a conduit (3) fixedly installed at the output end of the pump (2), and a rigid pipe (4) fixedly installed at one end of the conduit (3), characterized in that: A moving mechanism (5) is provided on the rigid tube (4); The moving mechanism (5) includes a mounting base (501), which is fixedly installed on the outside of the rigid pipe (4). Two positioning frames (502) are fixedly installed on both the upper and lower sides of the mounting base (501). Limiting frames (503) are fixedly installed on both sides of the positioning frames (502). A sliding column (504) is slidably installed inside the limiting frame (503). A wheel frame (505) is fixedly installed between the two sliding columns (504). Two rollers (506) are rotatably installed side by side on the wheel frame (505). A positioning bolt (507) is rotatably installed on the wheel frame (505) and threaded onto the positioning frame (502). A buckle (508) is fixedly installed side by side on one side of the mounting base (501). A telescopic rod (509) is fastened to the buckle (508).

2. The apparatus for corrosion-proof spraying of the inner bevel of a spiral steel pipe welded pipe according to claim 1, characterized in that: The positioning frame (502) and the limiting frame (503) are both fixedly mounted on the mounting base (501) at an angle, and the two rollers (506) are located on the same horizontal line.

3. The apparatus for corrosion-proof spraying of the inside joint of the spiral steel pipe welded pipe according to claim 1, characterized in that: A hook is fixedly installed at one end of the telescopic rod (509), and the buckle (508) is adapted to the hook.

4. The apparatus for corrosion-proof spraying of the inside joint of the spiral steel pipe welded pipe according to claim 1, characterized in that: A spraying mechanism (6) is provided at one end of the rigid tube (4). The spraying mechanism (6) includes a buckle (601). The buckle (601) is fixedly installed at one end of the rigid tube (4). An inclined tube (602) is rotatably installed on the buckle (601). A gear ring (603) is fixedly installed on the outside of the inclined tube (602). A drive motor (604) is fixedly installed inside the mounting base (501). A gear (605) is fixedly installed on the output end of the drive motor (604).

5. The apparatus for anticorrosive spraying of the inside girth welding joint of the spiral steel pipe welded pipe according to claim 4, characterized in that: A sealing ring is fixedly installed between the buckle (601) and the inclined tube (602). A nozzle is fixedly installed at one end of the inclined tube (602). The inner diameter of the inclined tube (602) is smaller than the inner diameter of the rigid tube (4).

6. The apparatus for corrosion-proof spraying of the inside joint of the spiral steel pipe welded pipe according to claim 4, characterized in that: The toothed ring (603) meshes with the gear (605), and the inner diameters of the toothed ring (603) and the gear (605) are the same.

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