Spiral welding steel pipe welding device

Abstract

The utility model relates to a spiral welding steel pipe welding device which comprises a base, an installation frame is fixedly connected to the base, an installation base is fixedly connected to the installation frame, and a welding head and a spraying pipe are installed on the installation base. A recovery hopper is mounted on the base, the recovery hopper is located under the mounting seat, and a cleaning mechanism is arranged under the base; rotating frames are symmetrically arranged on the base left and right, driving mechanisms are installed on the rotating frames, and after the scaling powder falls into the cleaning cavity, dust and other tiny impurities attached to the surface of the scaling powder are fully washed away along with stirring of stirring rods and discharged out of the cleaning cavity along with sewage; therefore, primary recovery of the soldering flux is completed while the spiral steel pipe is welded, the recovery procedure of the soldering flux is simplified, and therefore the recovery efficiency of the soldering flux is effectively improved.

Description

Technical Field

[0001] This utility model relates to spiral steel pipes, and in particular to a spiral welded steel pipe welding device. Background Technology

[0002] Spiral steel pipe is a steel pipe made by rolling strip steel into a spiral shape and welding it at the edge of the spiral. Due to its high strength and good corrosion resistance, spiral steel pipe is often used for long-distance transportation of oil and gas, chemical media, water supply, drainage, irrigation, etc.

[0003] Spiral steel pipes are typically welded with the inner seam first, followed by the outer seam. The most common welding method for the outer seam of spiral steel pipes is submerged arc welding. Submerged arc welding of spiral steel pipes has the advantages of high weld quality, smooth weld surface, and good mechanical properties. Submerged arc welding involves spraying flux at the weld seam of the spiral steel pipe and embedding the welding wire in the flux to weld the spiral steel pipe. In the current technology, due to the high price of flux and its tendency to pollute the environment, for economic and environmental reasons, the flux used in submerged arc welding needs to be actively collected by operators after the spiral steel pipe welding is completed, and sent for cleaning and recycling. The recycling process is relatively troublesome.

[0004] To address this issue, we propose a spiral welded steel pipe welding device. Utility Model Content

[0005] This utility model proposes a spiral welded steel pipe welding device, which solves the above-mentioned problems existing in the use of the prior art.

[0006] The technical solution of this utility model is implemented as follows: a spiral welded steel pipe welding device includes a base, a mounting frame fixedly connected to the base, a mounting seat fixedly connected to the mounting frame, and a welding head and a spray pipe respectively mounted on the mounting seat.

[0007] A recycling hopper is installed on the base, and the recycling hopper is located directly below the mounting base. A cleaning mechanism is provided below the base.

[0008] The base is symmetrically provided with rotating frames on the left and right sides, and a drive mechanism is installed on the rotating frames.

[0009] A further feature of this invention is that the cleaning mechanism includes a cleaning tank, which is fixedly connected to the lower end surface of the base.

[0010] The cleaning tank has a cleaning chamber inside, and a sealing door is installed on the side wall of the cleaning chamber. The base has feeding holes that are respectively connected to the recycling hopper and the cleaning chamber.

[0011] A stirring rod driven by a servo motor is installed at the bottom of the cleaning chamber.

[0012] The cleaning chamber is equipped with an intelligent water delivery mechanism.

[0013] A further feature of this invention is that a filter screen is installed on the upper side of the cleaning chamber.

[0014] A further feature of this invention is that the intelligent water conveying mechanism includes a water level sensor, which is installed below the first filter screen.

[0015] A water supply pipe connected to the cleaning chamber is installed on the base, and a drain pipe connected to the cleaning chamber is fixedly connected to the lower side of the outer curved surface of the base. A second filter screen is fixedly connected inside the drain pipe, and a solenoid valve is installed on both the water supply pipe and the drain pipe.

[0016] A further feature of this invention is that a protective ring is fixedly connected to the upper side of the outer curved surface of the recycling hopper.

[0017] A further feature of this invention is that the driving mechanism includes a rotating ring;

[0018] The rotating frame has a rotating groove that extends from left to right, and the rotating ring is rotatably connected to the rotating groove.

[0019] A gear ring is fixedly connected to the rotating ring, a second servo motor is mounted on the rotating frame, and a gear that meshes with the gear ring is fixedly connected to the output shaft of the second servo motor.

[0020] The second drive component is provided on the inner curved surface of the rotating ring.

[0021] A further feature of this invention is that the second drive assembly includes two concave wheels.

[0022] The rotating ring has symmetrical brackets arranged on its inner curved surface. The two concave wheels are rotatably connected to the two brackets respectively. The brackets are equipped with a No. 3 servo motor for driving the concave wheels.

[0023] In summary, the beneficial effects of this utility model are as follows:

[0024] After the flux falls into the cleaning chamber, the dust and other tiny impurities attached to its surface are thoroughly washed away by the stirring rod and discharged out of the cleaning chamber with the sewage. This achieves the initial recovery of flux while welding the spiral steel pipe, simplifies the flux recovery process, and effectively improves the flux recovery efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0028] Figure 3 for Figure 1 Enlarged view of a portion of point B in the middle;

[0029] Figure 4 This is a cross-sectional view of the present invention;

[0030] Figure 5 for Figure 4 A magnified view of a portion of point C in the middle.

[0031] The following are labeled in the diagram: 11. Base; 12. Mounting bracket; 13. Mounting seat; 14. Welding head; 15. Spray pipe; 16. Recycling hopper; 17. Cleaning box; 18. Cleaning chamber; 19. Feeding hole; 20. Servo motor No. 1; 21. Stirring rod; 22. Filter screen No. 1; 23. Water level sensor; 24. Water supply pipe; 25. Drain pipe; 26. Solenoid valve; 27. Protective ring; 28. Rotating frame; 29. ​​Rotating groove; 30. Rotating ring; 31. Gear ring; 32. Servo motor No. 2; 33. Gear; 34. Concave wheel; 35. Hanger; 36. Servo motor No. 3; 37. Filter screen No. 2; 38. Sealing door. Detailed Implementation

[0032] The following will refer to the appendix in the embodiments of this utility model. Figure 1-5 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] Example:

[0034] like Figures 1 to 5As shown, a spiral welded steel pipe welding device includes a base 11, a mounting frame 12 fixedly connected to the base 11, a mounting seat 13 fixedly connected to the mounting frame 12, a welding head 14 and a spray pipe 15 connected to an external transportation device (not shown in the figure) respectively mounted on the mounting seat 13. During welding, the spray pipe 15 sprays flux onto the weld seam of the spiral steel pipe and buries the welding head 14 in the flux, thereby preventing the electric arc from being exposed to the air.

[0035] The base 11 is symmetrically provided with rotating frames 28 on the left and right. The rotating frames 28 have rotating grooves 29 that extend from left to right. A rotating ring 30 for a spiral steel pipe to pass through is rotatably connected in the rotating grooves 29. A gear ring 31 is fixedly connected to the rotating ring 30. A second servo motor 32 is installed on the rotating frame 28. A gear 33 that meshes with the gear ring 31 is fixedly connected to the output shaft of the second servo motor 32. Through the cooperation between the gear ring 31 and the gear 33, the rotating ring 30 is driven to rotate in the rotating grooves 29.

[0036] The inner curved surface of the rotating ring 30 is symmetrically provided with brackets 35, and each bracket 35 is rotatably connected with a concave wheel 34. The concave wheel 34 respectively abuts against the upper and lower sides of the outer curved surface of the spiral steel pipe, and a No. 3 servo motor 36 for driving the concave wheel 34 is installed on the bracket 35. The concave wheel 34 rotates while following the rotation of the rotating ring 30. Under the dual drive of the rotating ring 30 and the concave wheel 34, the steel pipe can move left and right while rotating, so that the welding head 14 can weld the outer seam of the spiral steel pipe.

[0037] A recycling hopper 16 is mounted on the base 11. A protective ring 27 is fixedly connected to the upper side of the outer curved surface of the recycling hopper 16 to prevent flux from splashing outside the recycling hopper 16 during its descent. The recycling hopper 16 is located directly below the mounting base 13. A cleaning box 17 is fixedly connected to the lower end face of the base 11. A cleaning chamber 18 is provided inside the cleaning box 17. A sealing door 38 is installed on the side wall of the cleaning chamber 18. The base 11 has openings respectively connected to the recycling hopper 16. The receiving hopper 16 and the cleaning chamber 18 are connected by a feeding hole 19. Flux falls from the weld seam of the spiral steel pipe into the receiving hopper 16 and enters the cleaning chamber 18 through the feeding hole 19. A first filter screen 22 is installed on the upper side of the cleaning chamber 18. The mesh size of the first filter screen 22 is smaller than that of the flux particles. When the flux falls into the cleaning chamber 18, the first filter screen 22 can screen out large pieces of rust mixed in the flux, thereby performing preliminary screening of the flux.

[0038] The cleaning tank 17 is equipped with a water supply pipe 24 connected to the cleaning chamber 18. The water supply pipe 24 is connected to an external water source (not shown in the figure). The lower side of the cleaning tank 17 is fixedly connected to a drain pipe 25 connected to the cleaning chamber 18. Solenoid valves 26 are installed on both the water supply pipe 24 and the drain pipe 25. Before welding begins, a certain amount of water is injected into the cleaning chamber 18 through the water supply pipe 24, so that the flux falls into the cleaning chamber 18 and is washed away with clean water to remove dust and other small impurities attached to the surface. Furthermore, a stirring rod 21 driven by a servo motor 20 is installed at the bottom of the cleaning chamber 18. The stirring rod 21 stirs the flux in the water, which helps to clean the small impurities attached to the surface of the flux particles.

[0039] In addition, a water level sensor 23 is installed on the inner curved surface of the cleaning chamber 18, and the water level sensor 23 is located below the first filter screen 22. Before the flux falls into the water, the water level is below the water level sensor 23. When the flux falls into the water, the water level rises. If the water level exceeds the water level sensor 23, the solenoid valve 26 on the drain pipe 25 will automatically open to drain the water, thereby ensuring that the water level in the cleaning chamber 18 does not exceed the first filter screen 22, and preventing some flux particles from adhering to the surface of large rust areas after the sewage is pumped away, thereby reducing the flux recovery rate.

[0040] It should be noted that the functions to be achieved by the water level sensor 23 in this embodiment are supported by a large number of mature technologies. The essence of this utility model is to optimize and combine the existing hardware connection methods for specific application scenarios in order to solve the problem of how to detect the water level height in the cleaning chamber 18 (without changing the internal structure of the water level sensor 23).

[0041] After cleaning, the wastewater is discharged through the drain pipe 25. A second filter screen 37 is fixedly connected inside the drain pipe 25. The mesh size of the second filter screen 37 is larger than that of the flux particles, so as to ensure that the flux particles will not be discharged out of the cleaning chamber 18 with the wastewater. After the wastewater is drained, the operator can open the sealing door 38 to take out the cleaned flux.

[0042] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., 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 limiting the scope of protection of this utility model.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spiral welded steel pipe welding device, comprising a base (11), characterized in that: A mounting bracket (12) is fixedly connected to the base (11), and a mounting seat (13) is fixedly connected to the mounting bracket (12). A welding head (14) and a nozzle (15) are respectively mounted on the mounting seat (13). A recycling hopper (16) is installed on the base (11), the recycling hopper (16) is located directly below the mounting base (13), and a cleaning mechanism is provided below the base (11). The base (11) is symmetrically provided with rotating frames (28), and a driving mechanism is installed on the rotating frames (28).

2. The spiral welded steel pipe welding device according to claim 1, characterized in that: The cleaning mechanism includes a cleaning tank (17), which is fixedly connected to the lower end surface of the base (11); The cleaning tank (17) has a cleaning chamber (18) inside, and a sealing door (38) is installed on the side wall of the cleaning chamber (18). The base (11) has feeding holes (19) that are connected to the recycling hopper (16) and the cleaning chamber (18) respectively. The bottom of the cleaning chamber (18) is equipped with a stirring rod (21) driven by a servo motor (20). The cleaning chamber (18) is equipped with an intelligent water delivery mechanism.

3. The spiral welded steel pipe welding device according to claim 2, characterized in that: A filter screen (22) is installed on the upper side of the cleaning chamber (18).

4. The spiral welded steel pipe welding device according to claim 3, characterized in that: The intelligent water conveying mechanism includes a water level sensor (23), which is installed below the first filter screen (22); A water supply pipe (24) connected to the cleaning chamber (18) is installed on the base (11). A drain pipe (25) connected to the cleaning chamber (18) is fixedly connected to the lower side of the outer curved surface of the base (11). A second filter screen (37) is fixedly connected inside the drain pipe (25). Solenoid valves (26) are installed on both the water supply pipe (24) and the drain pipe (25).

5. The spiral welded steel pipe welding device according to claim 1, characterized in that: A protective ring (27) is fixedly connected to the upper side of the outer curved surface of the recycling hopper (16).

6. The spiral welded steel pipe welding device according to claim 1, characterized in that: The drive mechanism includes a rotating ring (30); The rotating frame (28) has a rotating groove (29) that runs through the left and right sides, and the rotating ring (30) is rotatably connected to the rotating groove (29); A gear ring (31) is fixedly connected to the rotating ring (30), and a second servo motor (32) is installed on the rotating frame (28). A gear (33) that meshes with the gear ring (31) is fixedly connected to the output shaft of the second servo motor (32). The second drive assembly is provided on the inner curved surface of the rotating ring (30).

7. The spiral welded steel pipe welding device according to claim 6, characterized in that: The second drive assembly includes two concave wheels (34). The inner curved surface of the rotating ring (30) is symmetrically provided with a bracket (35), and the two concave wheels (34) are rotatably connected to the two brackets (35) respectively. The brackets (35) are equipped with a No. 3 servo motor (36) for driving the concave wheels (34).

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