Plate type flat welding flange

Abstract

The utility model relates to the field of flanges, in particular to a plate type flat welding flange which comprises a first flange plate and a second flange plate, steel pipes are welded to the welding faces of the first flange plate and the second flange plate, an annular clamping groove is formed in the connecting face of the first flange plate, and an annular groove is formed in the connecting face of the second flange plate. A sealing ring matched with the annular clamping groove is arranged in the annular groove and connected with the annular clamping groove in a clamped mode, connecting columns are distributed on the circumference of the connecting face of the second flange plate, a connecting pipe matched with the connecting columns is integrally arranged on the welding face of the first flange plate, and the connecting pipe extends to the connecting face of the first flange plate. A protruding rail is integrally and fixedly connected to the outer wall of the connecting column in a circle, a sliding groove matched with the protruding rail is formed in the inner wall of the connecting pipe, and the protruding rail is slidably connected with the sliding groove. Accurate alignment and stable connection are ensured through matching of the connecting pipe and the connecting column and sliding connection of the convex rail and the sliding groove, the screw rod is in threaded connection with the connecting seat, and connection is more convenient through rotation of the knob.

Description

Technical Field

[0001] This utility model relates to the field of flanges, and in particular to a plate-type flat welding flange. Background Technology

[0002] In industrial production and pipeline systems, flange connections are a critical connection method. Their reliability and sealing performance are directly related to the safe and stable operation of the entire system. If there are problems with the flange connection, such as leakage or loosening, it may lead to system failure or even safety accidents.

[0003] However, traditional flanges require manual alignment of bolt holes during connection, which is difficult to position. During welding, additional support tools are needed to fix the flange to the pipe, making the operation cumbersome. Furthermore, a large torque needs to be applied during tightening, which is not only inconvenient to operate but also easily damages the flange, thus affecting the stability and sealing of the connection. At the same time, the alignment between flanges depends on manual adjustment, which can easily lead to deviations during the connection process. Utility Model Content

[0004] To overcome the problems of difficulty in aligning multiple bolt holes, cumbersome operation, and reliance on manual alignment in traditional flange connections, which can easily lead to connection deviations.

[0005] The technical solution of this utility model is as follows: a plate-type flat-welded flange, comprising a first flange and a second flange, both the welding surfaces of which are welded with steel pipes. The connecting surface of the first flange has an annular groove, and the connecting surface of the second flange has an annular recess. A sealing ring adapted to the annular groove is disposed within the annular recess, and the sealing ring engages with the annular groove. Connecting posts are circumferentially arranged on the connecting surface of the second flange. A connecting pipe adapted to the connecting posts is integrally provided on the welding surface of the first flange, and the connecting pipe extends to the first flange. The connecting surface has a convex rail integrally fixedly connected around the outer wall of the connecting column. The inner wall of the connecting pipe has a sliding groove adapted to the convex rail, and the convex rail and the sliding groove are slidably connected. The outer wall of the side end of the first flange is integrally provided with a fixed seat. The fixed seat has a through groove. The inner wall of the through groove is fixedly connected with a fixed shaft. The outer wall of the fixed shaft is rotatably connected with a rotating plate. The rotating plate is threadedly connected with a screw. One end of the screw is provided with a knob. The outer wall of the side end of the second flange is integrally provided with a connecting seat. The connecting seat has a threaded hole adapted to the screw. The connecting seat and the screw are threadedly connected.

[0006] Preferably, the welding surfaces of the first flange and the second flange are provided with protective rings, and bolts are installed inside the protective rings. The protective rings are connected to the welding surfaces of the first flange and the second flange by the bolts.

[0007] Preferably, magnets are provided inside both the convex rail and the slide groove, and the convex rail and the slide groove are magnetically connected.

[0008] Preferably, alloy bushings are embedded in the bolt holes of both the first and second flange welding surfaces.

[0009] Preferably, the outer wall of the knob is provided with a rubber sheet, and the surface of the rubber sheet is provided with anti-slip texture.

[0010] Preferably, the inner wall of the screw hole in the connector is provided with a lubricating coating, and the outer wall of the screw is in contact with the lubricating coating.

[0011] Preferably, the outer wall of the protective ring is provided with an anti-corrosion coating, and the head of the bolt is provided with anti-loosening grooves.

[0012] The beneficial effects of this utility model are as follows: Compared with traditional flanges, this solution achieves a more reliable sealing connection between the first flange and the second flange through the tight engagement of the annular groove and the sealing ring, effectively preventing fluid leakage. At the same time, the cooperation between the connecting pipe and the connecting column, as well as the sliding connection between the convex rail and the slide groove, ensures the precise alignment and stable connection between the first flange and the second flange. In addition, the threaded connection design between the screw and the connecting seat, combined with the rotation of the knob, makes the connection between the first flange and the second flange more convenient. Attached Figure Description

[0013] Figure 1 The diagram shown is a first three-dimensional structural schematic of this utility model;

[0014] Figure 2 The diagram shown is a second three-dimensional structural schematic of this utility model;

[0015] Figure 3 The diagram shown is a three-dimensional structural schematic of the connection surface between the first flange and the second flange of this utility model.

[0016] Figure 4 The diagram shown is a three-dimensional structural schematic of the connecting column and connecting pipe of this utility model;

[0017] Figure 5 The diagram shown is a three-dimensional structural schematic of the fixing base and connecting base of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. First flange; 2. Second flange; 3. Steel pipe; 4. Annular groove; 5. Annular recess; 6. Sealing ring; 7. Connecting column; 8. Connecting pipe; 9. Raised rail; 10. Slide groove; 11. Fixed seat; 12. Through groove; 13. Fixed shaft; 14. Rotating plate; 15. Screw; 16. Knob; 17. Connecting seat; 18. Screw hole; 19. Protective ring; 20. Bolt. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figure 1 - Figure 5 This utility model provides an embodiment: a plate-type flat-welded flange, including a first flange 1 and a second flange 2. Steel pipes 3 are welded to the welding surfaces of both the first flange 1 and the second flange 2. An annular groove 4 is formed on the connecting surface of the first flange 1, and an annular groove 5 is formed on the connecting surface of the second flange 2. A sealing ring 6, adapted to the annular groove 4, is disposed within the annular groove 5 and engages with the annular groove 4. Connecting posts 7 are arranged circumferentially on the connecting surface of the second flange 2. A connecting pipe 8, adapted to the connecting posts 7, is integrally formed on the welding surface of the first flange 1, extending to the connecting surface of the first flange 1. A convex rail is integrally fixedly connected to the outer wall of the connecting posts 7 around their circumference. 9. The inner wall of the connecting pipe 8 is provided with a groove 10 that matches the convex rail 9. The convex rail 9 and the groove 10 are slidably connected. The outer wall of the side end of the first flange 1 is integrally provided with a fixing seat 11. A through groove 12 is provided in the fixing seat 11. A fixing shaft 13 is fixedly connected to the inner wall of the through groove 12. A rotating plate 14 is rotatably connected to the outer wall of the fixing shaft 13. A screw 15 is threadedly connected to the rotating plate 14. A knob 16 is provided at one end of the screw 15. The outer wall of the side end of the second flange 2 is integrally provided with a connecting seat 17. A screw hole 18 that matches the screw 15 is provided in the connecting seat 17. The connecting seat 17 is threadedly connected to the screw 15. The first flange 1 has a flat connecting surface and a welding surface for welding steel pipe 3. The annular groove 4 is used to engage with the sealing ring 6 to achieve a sealed connection between the first flange 1 and the second flange 2. The connecting pipe 8 is used to cooperate with the connecting post 7 on the second flange 2 to achieve a mechanical connection between the flanges. An annular groove 5 is provided on the connecting surface of the second flange 2 to accommodate the sealing ring 6, allowing the sealing ring 6 to engage with the annular groove 4 on the first flange 1. The connecting post 7 cooperates with the connecting pipe 8 on the first flange 1, and through the sliding connection of the convex rail 9 and the sliding groove 10, the precise alignment and fixation between the first flange 1 and the second flange 2 are achieved. A screw hole 18 is provided in the connecting seat 17 for threaded connection with the screw 15. The screw 15 is rotated to tighten or loosen the first flange 1 and the second flange 2. The sealing ring 6 provides a seal between the first flange 1 and the second flange 2 to prevent fluid leakage. The sliding connection between the convex rail 9 and the slide groove 10 ensures accurate alignment and stable connection between the first flange 1 and the second flange 2, and facilitates the installation and disassembly of the first flange 1 and the second flange 2. The screw 15 is fixed in the through groove 12 of the fixing seat 11 to support the rotating plate 14. A knob 16 is provided at one end of the screw 15. By rotating the knob 16, the screw 15 will move along the screw hole 18 in the connecting seat 17, thereby achieving the tightening and sealing of the connection between the first flange 1 and the second flange 2.

[0021] Please see Figure 3 - Figure 5In this embodiment, a protective ring 19 is provided on the welding surface of the first flange 1 and the second flange 2. A bolt 20 is installed inside the protective ring 19, and the protective ring 19 is connected to the welding surface of the first flange 1 and the second flange 2 through the bolt 20. Magnets are provided in both the convex rail 9 and the slide groove 10, and the convex rail 9 and the slide groove 10 are magnetically connected. Alloy bushings are embedded in the bolt 20 holes on the welding surface of the first flange 1 and the second flange 2. The outer wall of the knob 16 is provided with a rubber skin, and the surface of the rubber skin is provided with anti-slip texture. The inner wall of the screw hole 18 in the connecting seat 17 is provided with a lubricating coating, and the outer wall of the screw 15 is in contact with the lubricating coating. The outer wall of the protective ring 19 is provided with an anti-corrosion coating. The head of the bolt 20 is provided with anti-loosening texture. The protective ring 19 is designed to protect the welding surface of the steel pipe 3 from corrosion and damage from the external environment, while providing additional structural strength. Magnets are provided in both the convex rail 9 and the slide groove 10. These magnets make the convex rail 9 A magnetic connection is formed between the convex rail 9 and the slide 10, which enhances the stability between the convex rail 9 and the slide 10, making it easier to align the first flange 1 and the second flange 2 during the connection process. The alloy bushing provides additional wear and corrosion resistance, protecting the bolt 20 hole from damage, while ensuring the smooth insertion and tightening of the bolt 20. The rubber skin provides a comfortable grip, and the anti-slip texture increases the friction between the hand and the knob 16, making it easier and less likely to slip when rotating the knob 16. The lubricating coating reduces the friction of the screw 15 when rotating in the screw hole 18, making tightening or loosening easier and smoother. The lubricating coating ensures the smoothness of the screw 15 during rotation, reducing wear and noise. The anti-corrosion coating protects the protective ring 19 from external environmental corrosion, extending its service life. The anti-loosening texture increases the friction of the bolt 20 head, preventing the bolt 20 from loosening due to vibration during tightening.

[0022] When working, first ensure that the steel pipe 3 has been firmly welded to the welding surfaces of the first flange 1 and the second flange 2. Then, use bolts 20 to tightly fix the protective ring 19 to the welding surfaces of the first flange 1 and the second flange 2. Next, check and confirm that the alloy bushing has been correctly embedded in the bolt 20 hole and that the inner wall of the screw hole 18 of the connecting seat 17 has been coated with a lubricating coating.

[0023] Then, place the sealing ring 6 into the annular groove 5 of the second flange 2, ensuring that it fits completely into the annular groove 5. Next, align the connecting pipe 8 of the first flange 1 with the connecting post 7 of the second flange 2, so that the convex rail 9 and the slide groove 10 are accurately aligned. Utilizing the magnetic connection between the convex rail 9 and the slide groove 10, the alignment and connection of the first flange 1 and the second flange 2 can be easily achieved. At the same time, the sealing ring 6 will be snapped into the annular groove 4, ensuring the sealing between the first flange 1 and the second flange 2.

[0024] Finally, flip the rotating plate 14 and drive the screw 15 to move along the screw hole 18 in the connecting seat 17 by rotating the knob 16, so that the first flange 1 and the second flange 2 are tightly connected together. During the rotation of the knob 16, the rubber provides a comfortable grip, while the anti-slip texture ensures the stability of the knob 16.

[0025] Through the above steps, a more reliable seal is achieved by engaging the annular groove 4 with the sealing ring 6 to prevent fluid leakage. The connecting pipe 8 and the connecting column 7 cooperate, and the convex rail 9 and the sliding groove 10 are slidably connected to ensure accurate alignment and stable connection. The screw 15 is threadedly connected to the connecting seat 17, and the knob 16 rotates to make the connection more convenient. This solves the problems of difficulty in aligning multiple bolt holes 20 in traditional flange connections, cumbersome operation, and reliance on manual alignment, which can easily lead to connection deviations.

Claims

1. A plate-type flat-face welding flange, comprising a first flange (1) and a second flange (2); characterized in that: Steel pipes (3) are welded to the welding surfaces of the first flange (1) and the second flange (2). An annular groove (4) is provided on the connecting surface of the first flange (1), and an annular groove (5) is provided on the connecting surface of the second flange (2). A sealing ring (6) adapted to the annular groove (4) is provided in the annular groove (5). The sealing ring (6) is engaged with the annular groove (4). Connecting posts (7) are arranged circumferentially on the connecting surface of the second flange (2). A connecting pipe (8) adapted to the connecting post (7) is integrally provided on the welding surface of the first flange (1). The connecting pipe (8) extends to the connecting surface of the first flange (1). A convex rail (9) is integrally fixedly connected around the outer wall of the connecting post (7). The connecting pipe (8) The inner wall is provided with a sliding groove (10) that is compatible with the convex rail (9). The convex rail (9) and the sliding groove (10) are slidably connected. The outer wall of the side end of the first flange (1) is integrally provided with a fixed seat (11). The fixed seat (11) is provided with a through groove (12). The inner wall of the through groove (12) is fixedly connected with a fixed shaft (13). The outer wall of the fixed shaft (13) is rotatably connected with a rotating plate (14). The rotating plate (14) is threadedly connected with a screw (15). One end of the screw (15) is provided with a knob (16). The outer wall of the side end of the second flange (2) is integrally provided with a connecting seat (17). The connecting seat (17) is provided with a screw hole (18) that is compatible with the screw (15). The connecting seat (17) and the screw (15) are threadedly connected.

2. The plate-type flat-welding flange according to claim 1, characterized in that: The welding surfaces of the first flange (1) and the second flange (2) are provided with protective rings (19), and bolts (20) are installed inside the protective rings (19). The protective rings (19) are connected to the welding surfaces of the first flange (1) and the second flange (2) by bolts (20).

3. The plate-type flat-welding flange according to claim 2, characterized in that: Magnets are provided in both the convex rail (9) and the slide (10), and the convex rail (9) and the slide (10) are magnetically connected.

4. The plate-type flat-face welding flange according to claim 3, characterized in that: Alloy bushings are embedded in the bolt (20) holes on the welding surfaces of the first flange (1) and the second flange (2).

5. The plate-type flat-welding flange according to claim 4, characterized in that: The outer wall of the knob (16) is provided with a rubber skin, and the surface of the rubber skin is provided with anti-slip texture.

6. The plate-type flat-face welding flange according to claim 5, characterized in that: The inner wall of the screw hole (18) in the connector (17) is provided with a lubricating coating, and the outer wall of the screw (15) is in contact with the lubricating coating.

7. The plate-type flat-welding flange according to claim 6, characterized in that: The outer wall of the protective ring (19) is provided with an anti-corrosion coating, and the head of the bolt (20) is provided with anti-loosening grooves.

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