A powder spraying device for plastic coating of steel pipes
By using heating and stirring components to prevent material clumping during the steel pipe coating process, the problem of uneven powder spraying was solved, enabling smooth spraying and improving the quality and efficiency of steel pipe coating.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAIAN RUIMING HVAC TECHNOLOGY CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-07-10
AI Technical Summary
During the plastic coating process of steel pipes, the powder material is prone to clumping inside the material box, which leads to poor powder spraying and affects the coating effect.
It adopts components such as heating box, water tank, material box, and stirring blades to prevent material from clumping through heating and stirring, and uses water pump and material pump to preheat and stir the material to ensure smooth material extraction.
It effectively prevents material clumping, ensures smooth powder spraying, and improves the quality and efficiency of steel pipe coating.
Smart Images
Figure CN224475165U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel pipe coating processing technology, specifically a powder coating spraying device for steel pipe plastic coating. Background Technology
[0002] In the plastic coating process of steel pipes, powder coating is a common surface treatment method. By uniformly coating the surface of the steel pipe with plastic powder and then heating and curing it, a plastic coating with corrosion resistance and wear resistance can be formed on the surface of the steel pipe, effectively improving the service life and performance of the steel pipe. However, the existing technology has the following shortcomings:
[0003] When powder coating steel pipes, a pump is used in conjunction with a connecting pipe to extract the powder from the material box. Since the material is in a relatively static state inside the material box, it is easy for the material to clump together, making it impossible to stir and preheat the material. This will affect the subsequent extraction of the material and is not conducive to the actual subsequent powder coating treatment of the steel pipes.
[0004] Therefore, a powder coating device for plastic coating of steel pipes is proposed to solve the problems mentioned above. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a powder coating spraying device for steel pipes. This device solves the problem that when powder coating steel pipes are being processed, a pump is needed to extract the powder from the material box using a connecting pipe. Since the material is relatively static inside the material box, it is prone to clumping, making it impossible to agitate and preheat the material. This affects the subsequent extraction of the material and is detrimental to the actual subsequent coating process on the steel pipes.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a powder coating device for steel pipe plastic coating, comprising a protective box, two parallel placement plates installed on the bottom wall of the protective box, an arc-shaped opening for placing steel pipes at the upper end of the placement plates, a heating box and a water tank installed on the top of the protective box, a material box located on the inner surface of the heating box on the top of the protective box, a feed pipe fixedly installed on the top of the material box, a first valve installed on the feed pipe, a liquid inlet pipe installed on the top of the water tank, a second valve installed on the liquid inlet pipe, and a... The device is equipped with two heating tubes. A water pump is fixedly connected to the top of the protective box via a mounting bracket. A liquid extraction pipe is fixedly connected between the input end of the water pump and the water tank. The heating box has a cavity for containing hot water. A liquid delivery pipe is fixedly connected between the output end of the water pump and the cavity. A return pipe is fixedly connected between the upper part of one side surface of the heating box and the top surface of the water tank. A drive motor is fixedly installed at the center of the top of the material box. The output end of the drive motor is fixedly connected to a drive shaft located inside the material box. Multiple stirring blades arranged linearly around the periphery are fixedly installed on the drive shaft.
[0007] Preferably, a horizontal plate is installed inside the protective box, and two symmetrically arranged partitions are vertically installed between the bottom wall of the protective box and the bottom of the horizontal plate. Each of the two partitions is provided with a clamping mechanism, and the two clamping mechanisms are arranged opposite to each other.
[0008] Preferably, the clamping mechanism includes a connecting rod that moves laterally through the partition, a fixing plate is fixedly sleeved on the connecting rod, a spring located outside the connecting rod is fixedly connected between the fixing plate and the inner side wall of the protective box, an adjusting block is fixedly connected to one end of the connecting rod outside the protective box, and a clamping plate is fixedly installed at the other end of the connecting rod.
[0009] Preferably, a material pump is fixedly installed on the top of the horizontal plate, a material pumping pipe is fixedly connected between the input end of the material pump and the bottom of the material box, a guide pipe penetrating the horizontal plate is fixedly installed on the output end of the material pump, a connecting pipe is fixedly connected to the end of the guide pipe away from the material pump, and multiple nozzles facing directly downwards are installed on the connecting pipe.
[0010] Preferably, a positioning plate is fixedly connected between the bottom of the horizontal plate and the outer wall of the connecting pipe.
[0011] Preferably, the protective box is hinged with a door, and the horizontal plate and the partition are both attached to the door.
[0012] Preferably, a drain pipe is fixedly connected to one side surface of the water tank near the bottom, and a third valve is installed on the drain pipe.
[0013] Compared with the prior art, this utility model provides a powder coating spraying device for steel pipe plastic coating, which has the following beneficial effects:
[0014] 1. By combining the heating box, water tank, material box, liquid inlet pipe, heating pipe, water pump, liquid extraction pipe, cavity, liquid delivery pipe, return pipe, drive motor, drive shaft and stirring blades, the material inside the material box can be preheated and stirred, effectively preventing the material from clumping, making it easier to extract the material later, which is beneficial for actual use.
[0015] 2. After the steel pipe to be treated is placed on the two arc-shaped openings, the two clamping mechanisms can clamp and position the steel pipe, which is convenient for subsequent spraying treatment. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0017] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0018] Figure 3 This is a cross-sectional structural diagram of the water tank and the material tank in this utility model;
[0019] Figure 4 This is a schematic diagram of the heating box in this utility model.
[0020] Figure 5 This is a schematic diagram of the structure of the placement plate in this utility model.
[0021] In the diagram: 1. Protective box; 2. Placement plate; 3. Heating box; 4. Water tank; 5. Material box; 6. Inlet pipe; 7. Heating pipe; 8. Water pump; 9. Extraction pipe; 10. Cavity; 11. Infusion pipe; 12. Return pipe; 13. Feed pipe; 14. Drive motor; 15. Drive shaft; 16. Stirring blade; 17. Horizontal plate; 18. Partition plate; 19. Connecting rod; 20. Fixing plate; 21. Spring; 22. Adjusting block; 23. Clamping plate; 24. Material pump; 25. Extraction pipe; 26. Guide pipe; 27. Connecting pipe; 28. Nozzle; 29. Positioning plate; 30. Drain pipe. Detailed Implementation
[0022] 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.
[0023] Example:
[0024] Please see Figure 1 - Figure 5 This embodiment of a powder coating device for steel pipe plastic coating includes a protective box 1. Two parallel placement plates 2 are installed on the bottom wall of the protective box 1. The upper end of each placement plate 2 has an arc-shaped opening for placing the steel pipe. The steel pipe to be treated is placed in the two arc-shaped openings. A heating box 3 and a water tank 4 are installed on the top of the protective box 1. A material box 5 is located on the inner surface of the heating box 3 on the top of the protective box 1. A feed pipe 13 is fixedly installed on the top of the material box 5, and a first valve is installed on the feed pipe 13. A liquid inlet pipe 6 is installed on the top of the water tank 4, and a second valve is installed on the liquid inlet pipe 6. Open the first and second valves, and feed powdered material into the feed hopper 5 through the feed pipe 13. Add an appropriate amount of water into the water tank 4 through the liquid inlet pipe 6. Two heating tubes 7 are installed on the bottom wall of the water tank 4. By energizing the two heating tubes 7, the water inside the water tank 4 is heated. After a certain period, the water temperature inside the water tank 4 reaches a high level. A water pump 8 is fixedly connected to the top of the protective box 1 via a mounting bracket. A liquid extraction pipe 9 is fixedly connected between the input end of the water pump 8 and the water tank 4. Start the water pump 8, and the hot water inside the water tank 4 is extracted through the liquid extraction pipe 9. The heating box 3 is equipped with... A cavity 10 for containing hot water is provided. A delivery pipe 11 is fixedly connected between the output end of the water pump 8 and the cavity 10, allowing hot water to be introduced into the cavity 10. A return pipe 12 is fixedly connected between the upper part of one side surface of the heating tank 3 and the top surface of the water tank 4. When the water level inside the cavity 10 approaches its peak value, the hot water in the cavity 10 flows back into the water tank 4 through the return pipe 12, achieving hot water circulation. The circulating hot water inside the cavity 10 raises the temperature of the heating tank 3, and through heat transfer, heat is transferred to the material tank 5. The material inside the material bin 5 is preheated. A drive motor 14 is fixedly installed at the center of the top of the material bin 5. The output end of the drive motor 14 is fixedly connected to the drive shaft 15 located inside the material bin 5. When the drive motor 14 is started, the drive shaft 15 is rotated by the drive motor 14. Multiple stirring blades 16 are fixedly installed on the drive shaft 15 in a linear arrangement around the periphery. The multiple stirring blades 16 rotate synchronously with the drive shaft 15. In this way, the multiple stirring blades 16 agitate the material at each level inside the material bin 5, increasing the fluidity of the material and effectively preventing the material from clumping.
[0025] like Figure 2As shown, a horizontal plate 17 is installed inside the protective box 1. Two symmetrically arranged partitions 18 are vertically installed between the bottom wall of the protective box 1 and the bottom of the horizontal plate 17. Each partition 18 is equipped with a clamping mechanism, and the two clamping mechanisms are arranged opposite to each other. The clamping mechanism includes a connecting rod 19 that moves laterally through the partition 18. A fixing plate 20 is fixedly sleeved on the connecting rod 19. A spring 21 located outside the connecting rod 19 is fixedly connected between the fixing plate 20 and the inner side wall of the protective box 1. An adjusting block 22 is fixedly connected to one end of the connecting rod 19 outside the protective box 1, and a clamping plate 23 is fixedly installed on the other end of the connecting rod 19. After the steel pipe is placed in the two arc-shaped openings, the elastic force of the two springs 21 causes the two fixing plates 20 and the two clamping plates 23 to move closer to each other, so that the two clamping plates 23 are respectively attached to the two end faces of the steel pipe, thereby positioning the steel pipe.
[0026] like Figure 1 and Figure 2 As shown, a material pump 24 is fixedly installed on the top of the horizontal plate 17. A material pumping pipe 25 is fixedly connected between the input end of the material pump 24 and the bottom of the material box 5. A guide pipe 26 that passes through the horizontal plate 17 is fixedly installed on the output end of the material pump 24. A connecting pipe 27 is fixedly connected to the end of the guide pipe 26 away from the material pump 24. Multiple nozzles 28 facing directly downward are installed on the connecting pipe 27. A box door is hinged on the protective box 1. The horizontal plate 17 and the partition plate 18 are both attached to the box door. After the box door is closed, the material pump 24 is started, and the material inside the material box 5 is extracted through the material pumping pipe 25. The material is then guided into the connecting pipe 27 through the guide pipe 26. Finally, the powder material is sprayed out from the multiple nozzles 28 on the connecting pipe 27 to achieve the spraying treatment of the steel pipe.
[0027] like Figure 2 As shown, a positioning plate 29 is fixedly connected between the bottom of the horizontal plate 17 and the outer wall of the connecting pipe 27. The positioning plate 29 can fix the connecting pipe 27 and prevent the connecting pipe 27 from shifting.
[0028] like Figure 1 As shown, a drain pipe 30 is fixedly connected to one side surface of the water tank 4 near the bottom. A third valve is installed on the drain pipe 30. When the water inside the water tank 4 has been used for a long time, the third valve is opened to drain the used water from the drain pipe 30, and new water is easily injected into the water tank 4 through the inlet pipe 6.
[0029] The working principle of the above embodiment is as follows: The heating tube 7, water pump 8, drive motor 14, and material pump 24 are all electrically connected to an external control power supply. First, the box door is opened, and the steel pipe to be processed is placed in the two arc-shaped openings. The elastic force of the two springs 21 causes the two fixing plates 20 and the two clamping plates 23 to move closer to each other, so that the two clamping plates 23 are respectively attached to the two end faces of the steel pipe, thereby positioning the steel pipe. The first valve and the second valve are opened, and powdered material is fed into the material box 5 through the feed pipe 13. An appropriate amount of water is fed into the water tank 4 through the liquid inlet pipe 6. The water inside the water tank 4 is heated by energizing the two heating tubes 7. After a certain period of time, the temperature of the water inside the water tank 4 is high. Then, the water pump 8 is started, and the hot water inside the water tank 4 is extracted through the liquid extraction pipe 9 and introduced into the cavity 10 through the liquid delivery pipe 11. When the water temperature inside the cavity 10 approaches the peak value, Hot water in the cavity 10 flows back into the water tank 4 through the return pipe 12, realizing the circulation of hot water. The hot water circulating in the cavity 10 can raise the temperature of the heating box 3. Through the heat transfer effect, heat can be transferred to the material box 5, thereby preheating the material inside the material box 5. At the same time, the drive motor 14 is started, which drives the drive shaft 15 to rotate. Multiple stirring blades 16 rotate synchronously with the drive shaft 15, thereby stirring the material at each level inside the material box 5 through the multiple stirring blades 16, increasing the fluidity of the material and effectively preventing the material from clumping. After the box door is closed, the suction pump 24 is started, and the material inside the material box 5 is extracted through the suction pipe 25. The material is then guided into the connecting pipe 27 through the guide pipe 26, and finally the powder material is sprayed out from multiple nozzles 28 on the connecting pipe 27 to achieve the spraying treatment of the steel pipe.
[0030] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.
[0031] 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 powder coating spraying device for plastic coating of steel pipes, characterized in that: The system includes a protective box (1), with two parallel placement plates (2) installed on the bottom wall of the inner side of the protective box (1). The upper end of the placement plate (2) has an arc-shaped opening for placing steel pipes. A heating box (3) and a water tank (4) are installed on the top of the protective box (1). A material box (5) located on the inner surface of the heating box (3) is provided on the top of the protective box (1). A feed pipe (13) is fixedly installed on the top of the material box (5). A first valve is installed on the feed pipe (13). An inlet pipe (6) is installed on the top of the water tank (4). A second valve is installed on the inlet pipe (6). Two heating pipes (7) are installed on the bottom wall of the inner side of the water tank (4). The top of the protective box (1) is fixed by a mounting base. A water pump (8) is connected, and a liquid extraction pipe (9) is fixedly connected between the input end of the water pump (8) and the water tank (4). The heating box (3) is provided with a cavity (10) for containing hot water. A liquid delivery pipe (11) is fixedly connected between the output end of the water pump (8) and the cavity (10). A return pipe (12) is fixedly connected between the upper end of one side surface of the heating box (3) and the top surface of the water tank (4). A drive motor (14) is fixedly installed at the center of the top of the material box (5). A drive shaft (15) located inside the material box (5) is fixedly connected to the output end of the drive motor (14). A plurality of stirring blades (16) arranged linearly around the periphery are fixedly installed on the drive shaft (15).
2. The powder coating device for plastic coating of steel pipes according to claim 1, characterized in that: The protective box (1) has a horizontal plate (17) installed inside. Two symmetrically arranged partitions (18) are vertically installed between the bottom wall of the protective box (1) and the bottom of the horizontal plate (17). Each of the two partitions (18) is provided with a clamping mechanism, and the two clamping mechanisms are arranged opposite to each other.
3. The powder coating device for plastic coating of steel pipes according to claim 2, characterized in that: The clamping mechanism includes a connecting rod (19) that moves laterally through the partition (18). A fixing plate (20) is fixedly sleeved on the connecting rod (19). A spring (21) located outside the connecting rod (19) is fixedly connected between the fixing plate (20) and the inner wall of the protective box (1). An adjusting block (22) is fixedly connected to one end of the connecting rod (19) outside the protective box (1). A clamping plate (23) is fixedly installed at the other end of the connecting rod (19).
4. The powder coating device for plastic coating of steel pipes according to claim 2, characterized in that: A material pump (24) is fixedly installed on the top of the horizontal plate (17). A material pump pipe (25) is fixedly connected between the input end of the material pump (24) and the bottom of the material box (5). A guide pipe (26) penetrating the horizontal plate (17) is fixedly installed on the output end of the material pump (24). A connecting pipe (27) is fixedly connected to the end of the guide pipe (26) away from the material pump (24). Multiple nozzles (28) facing directly downward are installed on the connecting pipe (27).
5. A powder coating spraying device for plastic coating of steel pipes according to claim 4, characterized in that: A positioning plate (29) is fixedly connected between the bottom of the horizontal plate (17) and the outer wall of the connecting pipe (27).
6. A powder coating device for plastic coating of steel pipes according to claim 2, characterized in that: The protective box (1) is hinged with a door, and the horizontal plate (17) and the partition plate (18) are both attached to the door.
7. A powder coating device for plastic coating of steel pipes according to claim 1, characterized in that: A drain pipe (30) is fixedly connected to one side surface of the water tank (4) near the bottom, and a third valve is installed on the drain pipe (30).