A mobile polyurethane polyurea pipeline spraying device
By designing a fixed mechanism and auxiliary mechanism for a mobile polyurethane/polyurea pipe spraying device, simultaneous spraying of the inner and outer walls of the pipe is achieved, solving the problem of time consumption in existing technologies and improving spraying efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA UNIV OF SCI & TECH
- Filing Date
- 2025-08-19
- Publication Date
- 2026-07-21
AI Technical Summary
Existing spraying equipment is unable to spray the inner and outer walls of pipes simultaneously, resulting in operators spending a lot of time.
A mobile polyurethane/polyurea pipe spraying device was designed, comprising a support frame, support plate, connecting frame, spray gun, spraying pump, discharge pipe, inlet pipe, fixing mechanism, auxiliary mechanism, spraying pipe and spraying head. The extension and adjustment of the spraying pipe are realized through the fixing mechanism and auxiliary mechanism, which can spray the inner and outer walls of the pipe simultaneously.
This device can spray the inner and outer walls of pipes simultaneously, reducing the number of times operators need to spray and improving spraying speed and effectiveness.
Smart Images

Figure CN224525084U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline spraying technology, specifically to a mobile polyurethane / polyurea pipeline spraying device. Background Technology
[0002] Polyurethane polyurea anti-corrosion pipe coating is a protective material that can form a uniform thick film anti-corrosion protective layer on the inner and outer surfaces of pipes. The coating has the protective properties of being resistant to acids, alkalis, salt solutions and petroleum products, as well as atmospheric corrosion and soil corrosion. The coating has high adhesion, good resistance to cathodic disbondment and penetration, and good wear resistance.
[0003] Existing spraying equipment involves moving the device near the pipeline, extending the spray pipe next to the pipeline, and then using a spray pump to spray the coating material onto the inner and outer walls of the pipeline. However, the inner and outer walls of the pipeline need to be sprayed separately, which consumes a lot of time for operators.
[0004] The aforementioned spraying device is difficult to spray both inside and outside the pipe simultaneously, which consumes a lot of time for operators and reduces the effectiveness of the device. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this utility model provides a mobile polyurethane / polyurea pipe spraying device, which solves the problem mentioned in the background technology that the device is difficult to spray both the inside and outside of the pipe simultaneously, resulting in a significant time consumption by operators.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, the present invention provides the following technical solution: a mobile polyurethane polyurea pipe spraying device, comprising a movable plate, and further comprising a support frame, a support plate, a connecting frame, a connecting shaft, a spray gun, a spraying pump, a discharge pipe, an inlet pipe, a fixing mechanism, an auxiliary mechanism, a spraying pipe, and a spraying head;
[0009] The support frame is mounted on the upper surface of the movable plate, and a support plate is mounted on the upper surface of the support frame. The connecting frame is slidably connected to the support plate. A connecting shaft is rotatably connected inside the connecting frame. A spray gun is mounted on the inner end of the connecting shaft. The spray pump is mounted on the upper surface of the support plate. A discharge pipe and a feed pipe are respectively installed at the output end and input end of the spray pump. The rear end of the discharge pipe is connected to the front end of the spray gun. The fixing mechanism is set on the side of the support plate. An auxiliary mechanism is provided on the lower surface of the movable plate. The spray pipe is connected to the outer surface of the discharge pipe, and a spray head is connected to the outer end of the spray pipe.
[0010] In a preferred embodiment of the mobile polyurethane / polyurea pipe spraying device of this utility model, in order to adjust the device according to the pipe length, the fixing mechanism includes a connecting piece, a connecting pipe, a winding roller, and a connecting pin. The connecting piece is installed on the side of the support plate, and the connecting pipe is installed on the side of the connecting piece. The winding roller passes through the connecting piece and is rotatably connected to the connecting pipe. The spraying pipe is disposed on the outer surface of the winding roller, and the connecting pin is threaded through the connecting pipe. One end of the connecting pin threaded through the connecting pipe abuts against the winding roller.
[0011] As a preferred embodiment of the mobile polyurethane / polyurea pipe spraying device of this utility model, in order to prevent friction between the spraying pipe and the pipe during the movement of the spraying pipe, the auxiliary mechanism includes an auxiliary frame, a moving rail, a support column, and a guide roller. The auxiliary frame is installed on the lower surface of the moving plate, and the moving rail is slidably connected inside the auxiliary frame. The support column is installed on the upper surface of the moving rail, and the guide roller is rotatably connected to the upper surface of the support column. The guide roller is disposed on the outer surface of the spraying pipe.
[0012] In a preferred embodiment of the mobile polyurethane / polyurea pipe spraying device of this utility model, in order to better fit the inner wall of the pipe, a first fixing frame is installed on the outer surface of the spraying pipe, and a second fixing frame is installed on the side of the first fixing frame.
[0013] In a preferred embodiment of the mobile polyurethane / polyurea pipe spraying device of this utility model, in order to be adjustable according to the pipe diameter, an adjustment frame is installed on the outer surface of the second fixed frame, and an adjustment column is slidably connected inside the adjustment frame.
[0014] As a preferred embodiment of the mobile polyurethane / polyurea pipe spraying device of this utility model, in order to facilitate the operator to move the device, a contact block is installed on the outer side of the adjusting column, and a ball bearing is rotatably connected inside the contact block.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, this utility model provides a mobile polyurethane / polyurea pipe spraying device, which has the following beneficial effects:
[0017] In this invention, the spray pipe is extended outward by a fixing mechanism, and then the spray pipe is assisted in conduction by an auxiliary mechanism, so that the device can spray the inner and outer walls of the pipe simultaneously. Therefore, this mobile polyurethane polyurea pipe spraying device speeds up the operator's spraying speed of the entire pipe, reduces the number of times the operator has to adjust the equipment to spray the inner wall after spraying the outer wall, and improves the effectiveness of the device. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the cooperation structure between the support plate and the connecting frame in this utility model;
[0020] Figure 3 This is a schematic diagram of the mating structure of the connecting piece and the connecting tube in this utility model;
[0021] Figure 4 This is a schematic diagram of the cooperative structure of the first fixing frame and the second fixing frame in this utility model.
[0022] In the diagram: 1. Moving plate; 2. Support frame; 3. Support plate; 4. Connecting frame; 5. Connecting shaft; 6. Spray gun; 7. Spray pump; 8. Discharge pipe; 9. Inlet pipe; 10. Connecting piece; 11. Connecting pipe; 12. Winding roller; 13. Connecting pin; 14. Spray pipe; 15. Spray head; 16. Auxiliary frame; 17. Moving rail; 18. Support column; 19. Conducting roller; 20. First fixed frame; 21. Second fixed frame; 22. Adjusting frame; 23. Adjusting column; 24. Adjusting pin; 25. Contact block; 26. Ball bearing; 27. Universal self-locking wheel; 28. Storage box. Detailed Implementation
[0023] 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.
[0024] Example
[0025] Please see Figures 1 to 4 This embodiment proposes a mobile polyurethane polyurea pipe spraying device, including a mobile plate 1, a support frame 2, a support plate 3, a connecting frame 4, a connecting shaft 5, a spray gun 6, a spraying pump 7, a discharge pipe 8, an inlet pipe 9, a fixing mechanism, an auxiliary mechanism, a spraying pipe 14, and a spraying head 15.
[0026] like Figure 1 and Figure 2As shown, the support frame 2 is installed on the upper surface of the movable plate 1, and the support plate 3 is installed on the upper surface of the support frame 2. The connecting frame 4 is slidably connected to the support plate 3. The connecting shaft 5 is rotatably connected inside the connecting frame 4. The spray gun 6 is installed at the inner end of the connecting shaft 5. The friction between the connecting shaft 5 and the inside of the connecting frame 4 is large, so the spray gun 6 will not automatically reset after the operator adjusts the angle. The spray pump 7 is installed on the upper surface of the support plate 3. The spray pump 7 needs to be controlled by an external single-control switch to start and stop. The spray pump 7 needs to be powered by an external power supply. The output end and input end of the spray pump 7 are respectively equipped with a discharge pipe 8 and a feed pipe 9. The rear end of the discharge pipe 8 is connected to the front end of the spray gun 6. The fixing mechanism is set on the side of the support plate 3. The lower surface of the movable plate 1 is provided with an auxiliary mechanism. The spray pipe 14 is connected to the outer surface of the discharge pipe 8. The outer end of the spray pipe 14 is connected to the spray head 15.
[0027] like Figure 3 As shown, the fixing mechanism includes a connecting piece 10, a connecting pipe 11, a winding roller 12, and a connecting pin 13. The connecting piece 10 is installed on the side of the support plate 3, and the connecting pipe 11 is installed on the side of the connecting piece 10. The winding roller 12 passes through the connecting piece 10 and is rotatably connected to the connecting pipe 11. The spraying pipe 14 is set on the outer surface of the winding roller 12. During the rotation of the winding roller 12, the right end of the spraying pipe 14 can be extended outward, so that the operator can adjust the length of the spraying pipe 14 according to the pipe length. The spraying pipe 14 is a flexible hose. The connecting pin 13 is threaded through the connecting pipe 11, and one end of the connecting pin 13 threaded through the connecting pipe 11 abuts against the winding roller 12.
[0028] like Figure 1 As shown, the auxiliary mechanism includes an auxiliary frame 16, a moving rail 17, a support column 18, and a guide roller 19. The auxiliary frame 16 is installed on the lower surface of the moving plate 1. The moving rail 17 is slidably connected inside the auxiliary frame 16. The moving rail 17 is fixed to the ground during use. The auxiliary frame 16 can slide left and right along the moving rail 17. The lengths of the moving rail 17 and the spray pipe 14 are both greater than the lengths of commonly available pipes. The support column 18 is installed on the upper surface of the moving rail 17. The guide roller 19 is rotatably connected to the upper surface of the support column 18. The guide roller 19 can prevent the spray pipe 14 from rubbing against the pipe during movement. The guide roller 19 is set on the outer surface of the spray pipe 14.
[0029] like Figure 4As shown, a first fixing frame 20 is installed on the outer surface of the spray pipe 14, and a second fixing frame 21 is installed on the side of the first fixing frame 20. An adjusting frame 22 is installed on the outer surface of the second fixing frame 21. An adjusting column 23 is slidably connected inside the adjusting frame 22, which can move according to the inner diameter of the pipe. A contact block 25 is installed on the outer side of the adjusting column 23, and a ball bearing 26 is rotatably connected inside the contact block 25. During the rotation of the pipe, the ball bearing 26 can be driven to rotate. After the operator moves the spray pipe 14, the ball bearing 26 can move to the left or right along the inner wall of the pipe.
[0030] In this embodiment, as Figure 4 As shown, an adjusting pin 24 is threaded through the outer surface of the adjusting frame 22. One end of the adjusting pin 24, threaded into the adjusting frame 22, abuts against the adjusting post 23. Figure 1 As shown, a universal self-locking wheel 27 is installed on the lower surface of the movable plate 1, and a storage box 28 is installed on the upper surface of the movable plate 1. A feed pipe and a sealing cover are provided on the upper surface of the storage box 28, and the bottom end of the feed pipe 9 is connected to the front of the storage box 28.
[0031] It should be noted that this device is only responsible for spraying the material and cannot rotate the pipe. The pipe needs to be placed on a rotating roller frame before spraying.
[0032] Working principle: Fill the storage box 28 with spraying material, place the pipe on the external roller frame, loosen the connecting pin 13 counterclockwise, manipulate the spraying pipe 14 to move to the right through the guide roller 19 and extend it, so that the part of the spraying pipe 14 wrapped around the surface of the winding roller 12 extends out, and the winding roller 12 rolls along the inside of the connecting pipe 11. When the part of the spraying pipe 14 that extends out is larger than the pipe to be sprayed, tighten the connecting pin 13 clockwise to press against the winding roller 12.
[0033] Loosen the adjusting pin 24 counterclockwise, manipulate the adjusting column 23 to move outward along the adjusting frame 22, the outward movement of the adjusting column 23 drives the contact block 25 to move outward, the outward movement of the contact block 25 drives the ball 26 to move outward, after the movement is complete, tighten the adjusting pin 24 clockwise to press against the adjusting column 23, insert the spray tube 14 into the pipe, the first fixing bracket 20 and the second fixing bracket 21 enter the pipe, so that the ball 26 contacts the inner wall of the pipe, and move the spray tube 14 to the leftmost side of the pipe, at this time, the spray gun 6 is located at the rightmost side of the pipe;
[0034] Start the spraying pump 7. The output end of the spraying pump 7 draws out the spraying material in the storage tank 28 through the feed pipe 9, and sprays it out along the spray gun 6 through the discharge pipe 8 to spray the outer wall of the pipe. A part of the spraying material in the discharge pipe 8 is sprayed out along the spraying pipe 14 through the spraying head 15 to spray the inner wall of the pipe.
[0035] The moving plate 1 is pushed to the left by the universal self-locking wheel 27. The leftward movement of the moving plate 1 causes the auxiliary frame 16 to move to the left. The auxiliary frame 16 moves to the left along the moving rail 17. The leftward movement of the moving plate 1 causes the support frame 2 to move to the left. The leftward movement of the support frame 2 causes the support plate 3 to move to the left. The leftward movement of the support plate 3 causes the connecting frame 4 to move to the left. The leftward movement of the connecting frame 4 causes the spray gun 6 to move to the left, spraying along the outer wall of the pipe.
[0036] At the same time, the support plate 3 drives the connecting piece 10 to move to the left, and the connecting piece 10 moves to the left, which in turn drives the winding roller 12 to move to the left. This causes the winding roller 12 to pull the part of the spraying pipe 14 that extends out. The spraying pipe 14 moves to the left, which drives the transmission roller 19 to rotate. The part of the spraying pipe 14 that extends into the pipe moves to the right, which drives the first fixed frame 20 and the second fixed frame 21 to move to the right. The first fixed frame 20 and the second fixed frame 21 move to the right along the inner wall of the pipe, spraying the inner wall of the pipe. This allows the device to spray the inner and outer walls of the pipe simultaneously.
[0037] 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 these 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 mobile polyurethane / polyurea pipe spraying device, comprising a movable plate (1), characterized in that, Also includes: A support frame (2) is mounted on the upper surface of the movable plate (1), and a support plate (3) is mounted on the upper surface of the support frame (2); A connecting frame (4) is slidably connected inside the support plate (3). A connecting shaft (5) is rotatably connected inside the connecting frame (4). A spray gun (6) is installed at the inner end of the connecting shaft (5). A spraying pump (7) is installed on the upper surface of the support plate (3). The output end and input end of the spraying pump (7) are respectively equipped with a discharge pipe (8) and a feed pipe (9). The rear end of the discharge pipe (8) is connected to the front end of the spray gun (6). A fixing mechanism is provided on the side of the support plate (3), and an auxiliary mechanism is provided on the lower surface of the movable plate (1); A spray pipe (14) is connected to the outer surface of the discharge pipe (8), and a spray head (15) is connected to the outer end of the spray pipe (14).
2. The mobile polyurethane / polyurea pipe spraying device according to claim 1, characterized in that, The fixing mechanism includes: A connecting piece (10) is installed on the side of the support plate (3), and a connecting pipe (11) is installed on the side of the connecting piece (10); A winding roller (12) extends through the connecting piece (10) and is rotatably connected to the connecting tube (11). A spraying tube (14) is disposed on the outer surface of the winding roller (12). A connecting pin (13) is threaded through the connecting tube (11), and one end of the connecting pin (13) threaded through the connecting tube (11) abuts against the winding roller (12).
3. The mobile polyurethane / polyurea pipe spraying device according to claim 1, characterized in that, The auxiliary mechanism includes: An auxiliary frame (16) is mounted on the lower surface of the movable plate (1), and a movable rail (17) is slidably connected inside the auxiliary frame (16). A support column (18) is mounted on the upper surface of the moving rail (17). A guide roller (19) is rotatably connected to the upper surface of the support column (18). The guide roller (19) is disposed on the outer surface of the spray pipe (14).
4. The mobile polyurethane / polyurea pipe spraying device according to claim 1, characterized in that, The outer surface of the spray pipe (14) is fitted with a first fixing bracket (20), and a second fixing bracket (21) is fitted on the side of the first fixing bracket (20).
5. A mobile polyurethane / polyurea pipe spraying device according to claim 4, characterized in that, An adjustment frame (22) is mounted on the outer surface of the second fixing frame (21), and an adjustment column (23) is slidably connected inside the adjustment frame (22).
6. A mobile polyurethane / polyurea pipe spraying device according to claim 5, characterized in that, The outer side of the adjusting column (23) is equipped with a contact block (25), and the inside of the contact block (25) is rotatably connected with a ball (26).