Efficient outer layer powder spraying device for steel-plastic composite pipe
The position of the steel-plastic composite pipe is automatically adjusted by a motor-driven guide roller and hydraulic push rod system, which solves the problems of uneven spraying and powder waste, and achieves efficient powder spraying effect and material utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-30
- Publication Date
- 2026-04-14
AI Technical Summary
In existing technologies, the position of steel-plastic composite pipes cannot be automatically adjusted during the outer layer powder coating process, requiring manual intervention. This results in uneven coating, and the open-type spraying system makes it difficult to recover unattached powder, leading to low material utilization.
The system employs a motor-driven guide roller and hydraulic push rod system, combined with a cross-structure guide roller and auxiliary roller, to automatically adjust the position of the steel pipe and collect unattached powder through a collection box, achieving uniform spraying and efficient material utilization.
This method achieves uniform coating on the outer layer of steel-plastic composite pipes, improves powder coating efficiency and material utilization, and reduces manual intervention and powder waste.
Smart Images

Figure CN224114308U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of steel-plastic composite pipe processing technology, specifically a high-efficiency steel-plastic composite pipe outer layer powder spraying device. Background Technology
[0002] Steel-plastic composite pipe is a composite pipe that combines the advantages of metal and plastic. It has the strength of steel pipe and the corrosion resistance of plastic, and has core advantages such as corrosion resistance, high strength and hygiene. It is widely used in water supply and drainage systems, chemical industry and fire protection pipelines.
[0003] When applying powder coating to the outer layer of steel-plastic composite pipes, a single roller or simple conveyor belt is usually used for transportation. This results in the inability to automatically adjust the position of the steel pipe, requiring manual intervention or flipping to achieve uniform coating. Furthermore, open-type spraying systems make it difficult to recover unattached powder, resulting in low material utilization. Utility Model Content
[0004] To overcome the above-mentioned defects, this utility model provides a high-efficiency outer layer powder spraying device for steel-plastic composite pipes, which solves the problems of using a single roller or simple conveyor belt for transportation, which results in the inability to automatically adjust the position of the steel pipe, requiring manual intervention or flipping to achieve uniform spraying, and the difficulty in recovering unattached powder in open spraying systems, leading to low material utilization.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency steel-plastic composite pipe outer layer powder spraying device, comprising a silo body and a vertical frame, a fixed frame connected to one side of the silo body, a connecting sleeve connected to the silo body, a collection box slidably installed inside the silo body, multiple spraying plates equally spaced above the silo body, multiple powder spraying gun heads installed inside the spraying plates, external pipes connected to the powder spraying gun heads, and columns connected to both sides above the fixed frame, with a top plate connected to the top of the columns;
[0006] A hydraulic push rod is fixedly installed on the top plate. The movable end of the hydraulic push rod and the fixed frame are both connected to the mounting base. A motor is fixedly installed on one side of the mounting base. The output shaft of the motor is connected to a guide roller. A connecting rod is connected below the upright frame. A connecting seat is connected above the upright frame. A motor is fixedly installed on one side of the connecting seat. An auxiliary roller is connected to the output shaft of the motor.
[0007] As a further embodiment of this utility model: the collection box is in contact with the inner wall of the chamber, and a second connecting sleeve is connected to the collection box. The second connecting sleeve and the first connecting sleeve are of the same size and position, and a pin is inserted into both the first connecting sleeve and the second connecting sleeve.
[0008] As a further embodiment of this utility model: both the upright frame and the fixed frame have insertion holes on one side, one end of the connecting rod is inserted into the insertion hole, and one end of the connecting rod has a threaded hole.
[0009] As a further embodiment of this utility model: two guide rods are slidably connected through the top plate, and the two guide rods are distributed on both sides of the hydraulic push rod. One end of each guide rod is connected to a mounting seat connected to the movable end of the hydraulic push rod.
[0010] As a further embodiment of this utility model: the mounting base connected to the fixed frame and the mounting base connected to the movable end of the hydraulic push rod are inclined to each other and are in a cross shape. The guide roller is rotatably connected to the mounting base through a bearing. The auxiliary roller is rotatably connected to the connecting base through a bearing. Both the guide roller and the auxiliary roller are waist drum wheels.
[0011] As a further embodiment of this utility model: both sides of the upright frame and the fixed frame are provided with threaded holes II, the threaded holes II are connected to the insertion holes, the threaded holes I and II are of the same size and correspond to each other in position, and the threaded holes I and II are connected by a fastening bolt with a common thread.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. This high-efficiency steel-plastic composite pipe outer layer powder coating device is equipped with a motor, guide rollers, a second motor, auxiliary rollers, a hydraulic push rod, and a powder coating gun head. The second motor drives the auxiliary rollers to rotate, enabling the composite pipe to move horizontally. Then, the hydraulic push rod is activated to push the mounting base downwards, causing the upper guide rollers to press down and clamp the composite pipe. The first motor is then activated to rotate the guide rollers, causing both guide rollers to jointly drive the composite pipe to move horizontally. At this time, the two guide rollers, which form an intersecting structure, allow the composite pipe to roll automatically during the horizontal movement, ensuring that all surfaces of the composite pipe are evenly coated by the powder coating gun head, improving the powder coating effect and efficiency. The waist drum design of the guide rollers and auxiliary rollers allows the composite pipe to be corrected to the center position by the inclined contact surface, preventing deviation.
[0014] 2. This high-efficiency steel-plastic composite pipe outer layer powder spraying device, through the setting of connecting rods, insertion holes, threaded hole one, threaded hole two, fastening bolts and collection boxes, allows the connection of uprights and fixed frames or multiple uprights together by inserting one end of the connecting rod into the insertion hole. At this time, threaded hole one and threaded hole two will be aligned with each other, making it convenient for workers to tighten the fastening bolts for fixation and preventing accidental detachment. This makes it easy for workers to combine multiple uprights and fixed frames according to the length of the composite pipe to achieve stable support and transportation. The sprayed powder that does not adhere will fall into the collection box for centralized collection to avoid waste. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention;
[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the fixing frame of this utility model;
[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the silo body of this utility model;
[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the support frame of this utility model;
[0019] In the diagram: 1. Bin body; 2. Frame; 3. Fixing frame; 4. Connecting sleeve one; 5. Collection box; 6. Spraying plate; 7. Powder spraying gun head; 8. External pipe; 9. Column; 10. Top plate; 11. Hydraulic push rod; 12. Mounting seat; 13. Motor one; 14. Guide roller; 15. Connecting rod; 16. Connecting seat; 17. Motor two; 18. Auxiliary roller; 19. Connecting sleeve two; 20. Pin; 21. Insertion hole; 22. Threaded hole one; 23. Guide rod; 24. Threaded hole two; 25. Fastening bolt. Detailed Implementation
[0020] The technical solution of this patent will be further described in detail below with reference to specific embodiments.
[0021] like Figure 1-4 As shown, this utility model provides a technical solution: a high-efficiency steel-plastic composite pipe outer layer powder spraying device, including a hopper 1 and a stand 2. A fixing frame 3 is connected to one side of the hopper 1. A connecting sleeve 4 is connected to the hopper 1. A collection box 5 is slidably installed inside the hopper 1. The collection box 5 is in contact with the inner wall of the hopper 1. A connecting sleeve 29 is connected to the collection box 5. The connecting sleeve 29 and the connecting sleeve 4 are of the same size and position. A pin 20 is inserted into both the connecting sleeve 4 and the connecting sleeve 29. By inserting the pin 20 into the connecting sleeve 4 and the connecting sleeve 29, the collection box 5 can be fixed, preventing the collection box 5 from sliding or shifting. This allows excess powder to fall into the collection box 5 for collection, reducing waste and improving utilization.
[0022] Multiple spraying plates 6 are installed at equal intervals above the silo body 1. Multiple powder spraying gun heads 7 are installed inside the spraying plates 6. External pipes 8 are connected to the powder spraying gun heads 7. Columns 9 are connected to both sides above the fixed frame 3. Top plate 10 is connected to the top of the column 9. Hydraulic push rods 11 are fixedly installed on the top plate 10. Two guide rods 23 are slidably connected through the top plate 10. The two guide rods 23 are distributed on both sides of the hydraulic push rod 11. One end of the guide rod 23 is connected to the mounting seat 12 connected to the movable end of the hydraulic push rod 11. When the hydraulic push rod 11 pushes or pulls the mounting seat 12 to move, the guide rod 23 will slide on the top plate 10, thus forming a double support structure to ensure that the mounting seat 12 moves in a straight line under the drive of the hydraulic push rod 11, avoiding deviation or shaking.
[0023] Mounting seats 12 are connected to both the movable end of the hydraulic push rod 11 and the fixed frame 3. A motor 13 is fixedly mounted on one side of the mounting seat 12. The output shaft of the motor 13 is connected to a guide roller 14. The mounting seat 12 connected to the fixed frame 3 and the mounting seat 12 connected to the movable end of the hydraulic push rod 11 are inclined to each other and are in a cross shape. The guide roller 14 is rotatably connected to the mounting seat 12 through a bearing. The auxiliary roller 18 is rotatably connected to the connecting seat 16 through a bearing. Both the guide roller 14 and the auxiliary roller 18 are waist drum wheels. The height of the upper guide roller 14 is adjusted by the hydraulic push rod 11, and then the composite tube is pressed down and clamped to form a stable contact. The rotation direction of the two mutually inclined and cross-shaped guide rollers 14 forms an angle with the axis of the composite tube. Through the decomposition of friction, the composite tube is forced to rotate around its own axis, thereby realizing a composite motion of translation and rolling at the same time. This makes all parts of the outer wall of the composite tube evenly exposed under the powder spraying gun head 7, avoiding uneven spraying.
[0024] A connecting rod 15 is connected to the bottom of the upright frame 2. Both the upright frame 2 and the fixed frame 3 have insertion holes 21 on one side. One end of the connecting rod 15 is inserted into the insertion hole 21, and the other end of the connecting rod 15 has a threaded hole 22. By connecting the connecting rod 15 and the insertion hole 21, the staff can quickly complete the combination and installation of the fixed frame 3 and the upright frame 2, or multiple upright frames 2, which facilitates the staff to disassemble and adjust.
[0025] A connecting seat 16 is connected to the top of the upright frame 2. A motor 17 is fixedly installed on one side of the connecting seat 16. An auxiliary roller 18 is connected to the output shaft of the motor 17. Threaded holes 24 are opened on both sides of the upright frame 2 and the fixed frame 3. The threaded holes 24 are connected to the insertion holes 21. The threaded holes 22 and 24 are the same size and corresponding in position. A fastening bolt 25 is threaded into both the threaded holes 22 and 24. The connecting rod 15 can be fixed by screwing the fastening bolt 25 into both the threaded holes 22 and 24, thereby improving the stability of the assembly and preventing slippage.
[0026] The working principle of this utility model is as follows:
[0027] Workers insert one end of the connecting rod 15 into the insertion hole 21. At this time, the threaded hole 1 22 and the threaded hole 24 will be aligned with each other, making it convenient for workers to screw in the fastening bolt 25 for fixation. This allows workers to combine multiple uprights 2 and fixed frames 3 according to the length of the composite pipe to achieve stable support and transportation. Then, the auxiliary roller 18 is rotated by the motor 2 17, which can drive the composite pipe to move horizontally. When the composite pipe moves, the hydraulic push rod 11 is activated to push the mounting base 12 down, so that the guide roller 14 located above can press down and clamp the composite pipe. Then, the motor 1 13 is activated to rotate the guide roller 14, so that the two guide rollers 14 jointly drive the composite pipe forward. At this time, the two guide rollers 14, which form a cross structure, can make the composite pipe roll automatically during the horizontal movement, so that all surfaces of the composite pipe can be evenly sprayed by the powder spraying gun head 7.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.
Claims
1. A high-efficiency powder coating device for the outer layer of steel-plastic composite pipes, comprising a silo (1) and a support frame (2), characterized in that: A fixed frame (3) is connected to one side of the silo body (1), a connecting sleeve (4) is connected to the silo body (1), a collection box (5) is slidably installed inside the silo body (1), multiple spray plates (6) are installed at equal intervals above the silo body (1), multiple powder spraying guns (7) are installed inside the spray plates (6), and an external pipe (8) is connected to the powder spraying guns (7). Columns (9) are connected to both sides above the fixed frame (3), and a top plate (10) is connected to the top of the column (9). A hydraulic push rod (11) is fixedly installed on the top plate (10). The movable end of the hydraulic push rod (11) and the fixed frame (3) are both connected to the mounting base (12). A motor (13) is fixedly installed on one side of the mounting base (12). The output shaft of the motor (13) is connected to the guide roller (14). A connecting rod (15) is connected below the upright frame (2). A connecting seat (16) is connected above the upright frame (2). A motor (17) is fixedly installed on one side of the connecting seat (16). An auxiliary roller (18) is connected to the output shaft of the motor (17).
2. The high-efficiency steel-plastic composite pipe outer layer powder coating device according to claim 1, characterized in that: The collection box (5) is in contact with the inner wall of the hopper (1). A connecting sleeve two (19) is connected to the collection box (5). The connecting sleeve two (19) and the connecting sleeve one (4) are of the same size and position, and a pin (20) is inserted into both the connecting sleeve one (4) and the connecting sleeve two (19).
3. The high-efficiency steel-plastic composite pipe outer layer powder coating device according to claim 1, characterized in that: Both the upright frame (2) and the fixed frame (3) have insertion holes (21) on one side. One end of the connecting rod (15) is inserted into the insertion hole (21), and one end of the connecting rod (15) has a threaded hole (22).
4. The high-efficiency steel-plastic composite pipe outer layer powder coating device according to claim 1, characterized in that: Two guide rods (23) are slidably connected through the top plate (10). The two guide rods (23) are distributed on both sides of the hydraulic push rod (11). One end of the guide rod (23) is connected to the mounting seat (12) connected to the movable end of the hydraulic push rod (11).
5. The high-efficiency steel-plastic composite pipe outer layer powder coating device according to claim 1, characterized in that: The mounting base (12) connected to the fixed frame (3) and the mounting base (12) connected to the movable end of the hydraulic push rod (11) are inclined to each other and are in a cross shape. The guide roller (14) is rotatably connected to the mounting base (12) through a bearing. The auxiliary roller (18) is rotatably connected to the connecting base (16) through a bearing. Both the guide roller (14) and the auxiliary roller (18) are waist drum wheels.
6. The high-efficiency steel-plastic composite pipe outer layer powder coating device according to claim 3, characterized in that: Both sides of the upright frame (2) and the fixed frame (3) are provided with threaded holes two (24), the threaded holes two (24) are connected to the insertion hole (21), the threaded holes one (22) and the threaded holes two (24) are the same size and corresponding in position, and the threaded holes one (22) and the threaded holes two (24) are connected by a fastening bolt (25) through the same thread.