A flange easy to install and installation method

Abstract

The present invention relates to the field of flange technology, and proposes a flange that is easy to install and an installation method, wherein the flange that is easy to install includes a flange plate body, a rotating plate and an adjusting plate. An annular groove is provided on one side of the flange plate body, and the adjusting plate is installed in the annular groove through a detachable structure, and an Archimedean spiral groove is provided on its end face. A plurality of radially sliding positioning claws are provided in the circular through hole, and the positioning claws are engaged with the spiral groove to achieve synchronous movement through teeth. During installation, the rotating adjusting plate drives the positioning claws to press against the inner wall of the pipe, and the flange is welded and fixed after self-centering. The rotating plate cooperates with the annular groove through a guide block to adjust the angle of the bolt hole. The present invention solves the problems of inaccurate installation alignment, cumbersome centering steps, strong dependence on the experience of construction personnel, poor sealing and low efficiency of traditional flanges through multi-claw synchronous positioning, dynamic sealing compensation and modular design, and significantly improves the installation accuracy, anti-leakage performance and construction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of flanges, and in particular to a flange that is easy to install and an installation method. Background Art

[0002] A flange is a part used to connect pipes, between pipes and pumps and valves, and at the inlet and outlet of equipment. It has a circular hole in the middle and multiple uniform bolt holes on the edge of the circular hole. When in use, a detachable sealed connection is achieved through the cooperation of bolts and gaskets to ensure the stable transmission of fluid or gas. When in use, one flange is usually welded to the pipe, and then the other flange is welded to another pipe (or pump and valve). A gasket is placed between the two flanges, and bolts of matching models are used to pass through the bolt holes on the two flanges to tightly connect the two flanges and clear the pipes.

[0003] However, flanges often leak during use. This phenomenon is mainly due to the lack of good center alignment between the flange and the pipe during installation, which causes the flange and the pipe to tilt. When the welded flange is docked with another flange, the gap between them is difficult to fully compensate for by the gasket. Although the seal can be maintained for a period of time when the bolts are tightened, after long-term use, the tilt of the flange during welding and the torque generated by the pipe on the flange will cause the gap during installation to become larger and larger, resulting in leakage. Moreover, during installation, the bolt holes between the two flanges will often be misaligned due to inaccurate alignment during welding. If installed directly, torque will also be generated between the flange and the pipe. After a long period of use, leakage will still occur.

[0004] In order to avoid the above phenomenon, during the traditional flange installation process, the center alignment between the flange and the pipe mainly depends on the experience of the construction workers. Positioning is achieved through repeated spot welding, adjustment and measurement. The operation is cumbersome and easily affected by human errors. Due to the lack of an effective self-centering mechanism, problems such as flange tilt and bolt hole misalignment often occur after welding, which makes it difficult for the sealing gasket to be evenly stressed. If there is a slight deviation, the spot welding position must be cut off and readjusted. The operation is cumbersome and there are many error factors, which reduces the overall construction efficiency and causes leakage risks in the later stage of installation. Summary of the Invention

[0005] The present invention provides a flange that is easy to install and an installation method, which are used to solve the problems in the prior art of flanges, such as misalignment between the center of the flange plate body and the pipeline during installation, complicated centering operation steps, strong dependence on the experience of construction workers, and easy occurrence of welding tilt and bolt hole misalignment, which may lead to leakage in the later stage of installation.

[0006] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut.

[0007] On the basis of the above scheme, further, the detachable structure includes an adjusting shaft, an annular cavity is provided in the adjusting disk, a circular disc is rotatably installed in the annular cavity, a plurality of positioning protrusions are equidistantly provided on the circumference of the disc, and a rack is provided on the disc located between two adjacent positioning protrusions, and a gear is meshed on one side of each rack, the adjusting shaft is located in the inner ring of the gear and is coaxially connected to the gear, and one end of the adjusting shaft is rotatably connected to a side wall of the annular cavity close to the Archimedean spiral groove, the other end of the adjusting shaft passes through and is rotatably connected to the other side wall of the annular cavity, a plurality of outlets are provided on the annular outer wall of the adjusting disk, and a limiting plate is slidably provided on each outlet, the limiting plate is elastically connected to the annular cavity, and a groove suitable for inserting the positioning protrusion is provided on the limiting plate, and a circular groove is also provided on the inner wall of the annular groove for placing the limiting plate.

[0008] On the basis of the above scheme, further, an annular disk is further provided on the outer wall of the adjusting disk, a plurality of annular sealing bodies are provided on the annular disk close to the side of the flange body, and an annular sealing groove is correspondingly provided on the flange body.

[0009] On the basis of the above scheme, further, an annular boss is provided on the side of the flange body close to the rotating disk, and an annular groove is provided on the circumferential outer wall of the annular boss, a mounting circular hole matching the annular boss is provided on the rotating disk, a notch is provided on the side wall of the annular groove, a guide block matching the shape of the notch is provided on the inner wall of the mounting circular hole, and the guide block can be slidably arranged in the annular groove.

[0010] Preferably, the positioning claw is connected by an L-shaped structure formed by a slider and a clamping block, wherein the slider slides along the radial direction of the flange body, and the circular through hole is provided with a sliding groove and a placement groove matching the slider and the clamping block, the slider includes block one and block two, the block one and the block two are elastically connected, the teeth are arranged on the surface of the block one, the sliding groove and the placement groove also form an L-shaped structure, sliding sheets are provided on both sides of the block two, and positioning grooves are also provided on the side walls of the sliding groove, the block two and the sliding sheet are respectively slidably arranged in the sliding groove and the positioning groove.

[0011] More preferably, a rotation groove for adjusting the rotation of the shaft is provided on the side wall of the annular cavity, a cross groove is provided on the adjusting shaft, and the length of the adjusting shaft extending into the rotation groove is less than the axial length of the rotation groove.

[0012] Preferably, a plurality of embedding holes are provided on a side of the flange body away from the rotating disk, and the embedding holes are located between two adjacent strip-shaped holes, and a connecting column assembly is detachably mounted on the embedding holes.

[0013] Furthermore, the connecting column assembly includes a circular tube, with discs symmetrically arranged inside the circular tube, a buffer structure connected between the two discs, and a positioning column provided at the other end of the disc, a positioning hole adapted to the positioning column is concentrically arranged in the embedding hole, annular embedding strips are provided on the outer walls of both ends of the circular tube, an annular ring is provided on the circumferential inner wall of the embedding hole, and the annular embedding strip can be clamped in the annular ring.

[0014] Furthermore, a plurality of spring clips are provided on the circumferential outer wall of the flange main body, and the spring clips are in an obtuse-angled structure. One end of the spring clip is connected to the outer wall of the flange main body, and the other end of the spring clip is in sliding contact with the outer wall of the flange main body. An energy-absorbing ring is provided on the outside of the plurality of spring clips, and the energy-absorbing ring is connected to the corner position of the spring clip. An interlaced tooth structure is provided on the side of the energy-absorbing ring away from the rotating disk.

[0015] A flange installation method, using the aforementioned easy-to-install flange, comprises the following steps:

[0016] S1. Install the adjusting disc: Select the flange body according to the pipeline, then place the adjusting disc in the annular groove, rotate the adjusting shaft to drive the gear to rotate, and the gear rotation drives the disc to rotate, so that the positioning protrusion rotates into the groove, and multiple limit plates are ejected from the outlet at the same time. After being ejected, the multiple limit plates extend into the annular groove, so that the adjusting disc can rotate in the annular groove;

[0017] S2. Positioning and centering the flange body: Put the rotating disk on the pipe, then place the flange body with the adjusting disk installed on it at the end of the pipe. Rotate the adjusting disk to drive the multiple positioning claws to move simultaneously along the radial direction of the flange body through the Archimedean spiral groove. After the multiple positioning claws can enter the pipe end, rotate the adjusting disk in the opposite direction so that the multiple positioning claws are tightly against the inner wall of the pipe to achieve the center alignment of the flange body.

[0018] S3. Welding the flange body: After aligning the flange body with the center of the pipe port in step S2, spot weld the welding gap between the flange body and the pipe port;

[0019] S4. Install the rotating disk: After the welding between the flange body and the pipe has cooled, move the rotating disk to the flange body, and then align the guide blocks on the rotating disk with the notches on the side walls of the annular groove, so that multiple guide blocks enter the annular groove. At this time, the rotating disk is in contact with the flange body, and the rotating disk is rotated to be installed on one side of the flange body;

[0020] S5. Place the connecting column assemblies: Insert and fasten the connecting column assemblies into the multiple mounting holes on the flange body, and insert the positioning columns into the corresponding positioning holes;

[0021] S6. Connect the flange body: Repeat steps S1, S2, S3, and S4 above to position and install the corresponding flange body on the other pipe port, place a gasket between the two adjustment disks, and insert the connecting column assembly in step S5 into the multiple mounting holes on the opposite flange body;

[0022] S7. Install bolts: Fully weld the two flange bodies to their corresponding pipe ports after buckling. After welding, rotate the rotating disks on both sides to align the bolt holes on the two rotating disks, install the bolt connectors, and tightly connect the two flange bodies.

[0023] The working principle and beneficial effects of the present invention are:

[0024] 1. In the present invention, the Archimedean spiral groove on the adjusting disk is engaged with the teeth of the positioning claws. Rotating the adjusting disk can drive multiple positioning claws to move synchronously in the radial direction, thereby achieving uniform tightening against the inner wall of the pipeline, ensuring automatic concentric alignment of the flange body and the pipeline, reducing the risk of welding tilt, improving centering accuracy, and facilitating operation.

[0025] 2. In the present invention, an annular sealing body and an annular sealing groove are provided between the adjusting disk and the flange main body, which cooperate with the flat convex ring to form a multi-stage sealing interface. When the gasket is under pressure, it is embedded in the gap of the convex ring to improve the sealing reliability. The rotating disk and the flange main body are slidably matched with the guide block and the annular embedding groove, allowing the position of the bolt hole to be adjusted to avoid docking misalignment, making it convenient to penetrate the bolts on the double-piece flange main body, reducing the operation steps and improving the operation efficiency.

[0026] 3. In the present invention, the adjusting disk is installed on the flange body through a detachable structure, which enables quick disassembly and assembly, facilitates maintenance and adaptation to different working conditions, and facilitates modular production and processing of each part. The connecting column assembly and the shrapnel energy absorption structure can buffer vibration impact and enhance the flange group's torsional performance and resistance to external force damage.

[0027] 4. In the present invention, the installation method reduces manual intervention, simplifies the welding process, shortens the construction period and reduces the rework rate through automatic positioning of the positioning claws, angle adjustment of the rotating disk and pre-positioning of the connecting column assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Figure 1 This is a schematic diagram of the structure of the flange body, the rotating disk as a whole and the connecting column assembly in the exploded state of the present invention;

[0030] Figure 2 This is a schematic structural diagram of the flange body, adjustment disc, rotating disc and energy absorbing ring in the present invention in a disassembled state;

[0031] Figure 3 This is a structural schematic diagram of the flange body, the adjusting disc, the rotating disc and the energy absorbing ring of the present invention in a disassembled state from another perspective;

[0032] Figure 4 Schematic diagram of the internal cross-sectional structure of the annular cavity in the present invention;

[0033] Figure 5 Schematic diagram of the planar structure of the protrusion, rack, gear, outlet, limit plate, spring 1 and cross groove in the annular cavity in the present invention;

[0034] Figure 6 This is a structural diagram of the flange body of the present invention, which is in a state where the flange body is pressed against and centered on the pipeline by means of a plurality of sliding positioning claws;

[0035] Figure 7 This is a schematic diagram of the structure in which the positioning claws slide outward from the circular through hole of the flange body in the present invention;

[0036] Figure 8 Schematic diagram of the cross-sectional structure of the interior of the circular tube in the present invention;

[0037] Figure 9 Schematic diagram of the exploded structure of the insertion rod and the buffer spring in the present invention;

[0038] Figure 10 Schematic diagram of the cross-sectional structure of the flange body in the present invention;

[0039] Figure 11 Schematic diagram of the exploded structure of the positioning claw in the present invention;

[0040] Figure 12 This is a schematic structural diagram of the state after the double-piece flange body and two pipes are aligned and welded and bolted.

[0041] In the figure: 1. flange body; 2. circular through hole; 3. rotating disk; 4. annular groove; 5. adjusting disk; 6. Archimedean spiral groove; 7. teeth; 8. bolt hole; 9. strip hole; 10. flat convex ring; 11. adjusting shaft; 12. disk; 13. protrusion; 14. rack; 15. gear; 16. outlet; 17. limit plate; 18. spring 1; 19. cross groove; 20. slide groove; 21. placement groove; 22. block 1; 23. block 2; 24. slide plate; 25. Positioning groove; 26. Annular disk; 27. Annular sealing body; 28. Annular sealing groove; 29. Pin rod; 30. Spring 2; 31. Annular boss; 32. Annular embedding groove; 33. Notch; 34. Guide block; 35. Mounting hole; 36. Round tube; 37. Round piece; 38. Positioning plug; 39. Annular embedding strip; 40. Spring piece; 41. Energy absorbing ring; 42. Tooth piece structure; 43. Insert rod; 44. Buffer spring; 45. Clamp; 46. Reinforcement rib; 47. Annular groove; 48. Groove. DETAILED DESCRIPTION

[0042] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0043] Example 1, as Figures 1 to 12As shown, this embodiment proposes a flange that is easy to install, including a flange body 1, a circular through hole 2 is provided in the center of the flange body 1, and a rotating disk 3, the rotating disk 3 is rotatably provided on one side of the flange body 1, and an annular groove 4 is provided on the other side of the flange body 1, the inner diameter of the annular groove 4 is larger than the inner diameter of the circular through hole 2, an adjusting disk 5 is rotatably provided in the annular groove 4 through a detachable structure, a plurality of positioning claws are provided at equal angles on the inner circumference of the circular through hole 2, and the positioning claws are arranged along the radial direction of the flange body 1. The direction is slidably matched with the annular groove 4, an Archimedes spiral groove 6 is provided on one end surface of the adjusting disk 5 close to the multiple positioning claws, and teeth 7 cooperating with the Archimedes spiral groove 6 are also provided on the multiple positioning claws. A plurality of bolt holes 8 are equidistantly provided on the circumference of the rotating disk 3, and a plurality of arc-shaped strip holes 9 are equidistantly provided on the circumference of the flange body 1. The strip holes 9 correspond to the bolt holes 8 one by one, and a plurality of concentrically arranged planar convex rings 10 are provided on the end surface of the adjusting disk 5 away from the multiple positioning claws;

[0044] In this embodiment, the detachable structure facilitates the installation of the adjusting disk 5, and at the same time facilitates the production and processing of the flange in this embodiment. By installing the adjusting disk 5, it is rotated in the annular groove 4. By rotating the adjusting disk 5, the Archimedes spiral groove 6 principle is utilized to drive multiple positioning claws to move synchronously along the radial direction of the flange body 1. After multiple positioning claws can simultaneously enter the pipe port to which the flange needs to be welded, the adjusting disk 5 is rotated in the opposite direction, and multiple positioning claws are used to press the inner wall of the pipe port tightly. Since multiple positioning claws are all synchronously moved under the action of the Archimedes spiral groove 6, after the positioning claws are tightened, the circular through hole 2 on the flange body 1 can be aligned with the flange body 1. The pipe port is in a concentric position, the welding gap between the flange body 1 and the pipe port is adjusted, and the installation angle is finally measured accurately, the welding of the flange body 1 can be completed. The above operation is simple and convenient, reducing the dependence of the construction workers on the experience of flange installation. Through the support and positioning of multiple positioning claws, the operation steps of the construction workers holding the flange with one hand and welding the gap between the flange and the pipe with the other hand in the traditional welding method are reduced, freeing both hands, so that the flange body 1 can be better measured and welded. The simultaneous action of multiple positioning claws for center positioning reduces welding errors, improves construction efficiency, and reduces the risk of leakage caused by tilting of flange welding in the later stage.

[0045] In addition, by rotatably setting the rotating disk 3 and providing the strip-shaped holes 9, the bolt holes 8 on the rotating disk 3 can have a certain adjustment range, so that when the other flange body 1 is docked with the flange body 1, the docking accuracy of the two bolt holes 8 can be better adjusted, reducing the phenomenon that the bolt holes 8 are not accurately aligned during the traditional flange installation and docking, which requires removal and re-welding and installation, thereby improving construction efficiency and improving the convenience and accuracy of flange installation as a whole;

[0046] In addition, by arranging multiple concentric planar convex rings 10 on the adjusting disk 5, after the two flange plate bodies are mounted, the gasket installed between the two adjusting disks 5 can enter the gap between the multiple planar convex rings 10 through extrusion, thereby forming a better sealing state and improving the installation sealing between the two flanges.

[0047] Correspondingly, the detachable structure includes an adjusting shaft 11, an annular cavity is provided in the adjusting disk 5, a disc 12 is rotatably installed in the annular cavity, a plurality of positioning protrusions 13 are equidistantly provided on the circumference of the disc 12, and a rack 14 is provided on the disc 12 located between two adjacent positioning protrusions 13, and a gear 15 is meshed on one side of each rack 14, which is located in the inner ring of the gear 15 and coaxially connected to the gear 15, and one end of the adjusting shaft 11 is rotatably connected to a side wall of the annular cavity close to the Archimedes spiral groove 6, and the other end of the adjusting shaft 11 passes through and is rotatably connected to the other side wall of the annular cavity, a plurality of outlets 16 are provided on the annular outer wall of the adjusting disk 5, and a limiting plate 17 is slidably provided on each outlet 16, the limiting plate 17 is elastically connected to the annular cavity, and a groove 48 suitable for inserting the positioning protrusion 13 is provided on the limiting plate 17, and a circular groove 47 is also provided on the inner wall of the annular groove 4 for placing the limiting plate 17.

[0048] In this embodiment, the width of one side of the limiting plate 17 located inside the annular cavity is greater than the width of the outlet 16, and a spring 18 is connected between this position and the inner wall of the annular cavity, and the elastic connection between the limiting plate 17 and the annular cavity is ensured by the spring 18, and a side wall of the limiting plate 17 close to the positioning protrusion 13 is provided with an outwardly protruding arc surface, and the groove 48 is located in the middle of the arc surface. By rotating the adjusting shaft 11, the gear 15 is driven to rotate, and the gear 15 drives the disc 12 to rotate. The positioning protrusion 13 slides to the position of the groove 48 and can just push the limiting plate 17 outward from the outlet 16, so that it enters the annular groove 47. Through the restriction of the annular groove 47, it is ensured that the adjusting disk 5 rotates in the annular groove 4, thereby driving the Archimedean spiral groove 6 to drive multiple positioning claws to move synchronously, wherein the thickness of the annular groove 47 is slightly larger than the limiting plate 17. The thickness of the present invention is such that, under the elastic force of the spring 18, when the positioning protrusion 13 enters the groove 48, the disc 12 will not rotate without rotating the adjusting shaft 11. The rotation connection between the disc 12 and the annular cavity adopts a rotation method with damping friction to avoid arbitrary rotation. A rotation groove for rotating the adjusting shaft 11 is provided on the side wall of the annular cavity, and a cross groove 19 is provided on the adjusting shaft 11. Through the setting of the cross groove 19, the adjusting shaft 11 can be rotated by a tool such as a screwdriver, which is convenient for adjusting the use of the limit plate 17. The length of the adjusting shaft 11 extending into the rotation groove is less than the axial length of the rotation groove, which avoids accidentally touching the adjusting shaft 11 and causing it to rotate arbitrarily, and also leaves part of the rotation groove space, which is convenient for using a claw tool (similar to a tooling tool with tweezers) to be inserted into the remaining space of the rotation groove, thereby driving the adjusting disk 5 to rotate, making the rotation of the adjusting disk 5 more convenient.

[0049] The positioning claw is connected by an L-shaped structure formed by a slider and a clamping block 45, wherein the slider slides along the radial direction of the flange main body 1, and the circular through hole 2 is provided with a slide groove 20 and a placement groove 21 matching the slider and the clamping block 45. The slider includes block one 22 and block two 23, and the block one 22 is elastically connected to the block two 23. The teeth 7 are arranged on the surface of the block one 22, and the slide groove 20 and the placement groove 21 also form an L-shaped structure. Sliders 24 are provided on both sides of the block two 23, and positioning grooves 25 are also provided on the side walls of the slide groove 20. The block two 23 and the slide 24 are respectively slidably arranged in the slide groove 20 and the positioning groove 25. An annular disk 26 is also provided on the outer wall of the adjusting disk 5, and a plurality of annular sealing bodies 27 are provided on the annular disk 26 close to the side of the flange main body 1, and a corresponding annular sealing groove 28 is provided on the flange main body 1.

[0050] In this embodiment, the positioning claw is facilitated to move along the radial direction of the flange body 1 by sliding cooperation between the block 23 and the slide 24 and the slide groove 20 and the positioning groove 25 respectively, wherein the block 23 is provided with a pin hole, the block 1 22 is connected with a pin rod 29, the pin rod 29 is slidably inserted into the pin hole, and a spring 2 30 is connected between the block 1 22 and the block 2 23 to form an elastic connection, such as Figure 11 As shown, through the elastic connection between block one 22 and block two 23, on the one hand, the teeth 7 on block one 22 can be matched with the Archimedean spiral groove 6 on the adjusting disk 5. On the other hand, since the thickness of the annular groove 47 is slightly larger than the thickness of the limiting piece 17, when the adjusting disk 5 is rotated, the rotation of the rotating disk 3 is facilitated. After the adjusting disk 5 is installed, the two flanges need to be bolted together and extrusion is generated. Through extrusion, the space between the block and block two 23 is compressed. At this time, the annular disk 26 on the outer wall of the adjusting disk 5 is tightly attached to the flange body 1. The contact between the annular sealing body 27 and the annular sealing groove 28 ensures the sealing between the adjusting disk 5 and the flange body 1, thereby ensuring the sealing after the flange in this embodiment is installed. The annular sealing body 27 can be made of polytetrafluoroethylene, and the annular sealing groove 28 can be a shape that matches the annular sealing body 27. Through extrusion, the annular sealing body 27 is squeezed into the corresponding annular sealing groove 28. The number of the annular sealing body 27 and the annular sealing groove 28 is at least two.

[0051] An annular boss 31 is provided on the side of the flange body 1 close to the rotating disk 3, and an annular groove 32 is provided on the circumferential outer wall of the annular boss 31. A mounting circular hole matching the annular boss 31 is provided on the rotating disk 3, and a notch 33 is provided on the side wall of the annular groove 32. A guide block 34 matching the shape of the notch 33 is provided on the inner wall of the mounting circular hole, and the guide block 34 can be slidably set in the annular groove 32.

[0052] In this embodiment, the mounting circular hole on the rotating disk 3 is placed on the outside of the annular boss 31 by aligning the guide block 34 with the notch 33. When the rotating disk 3 is tightly attached to the flange body 1, the guide block 34 just enters the annular groove 32. The guide block 34 rotates in the annular groove 32 to realize the rotation adjustment of the bolt hole 8. The setting of the strip hole 9 enhances the range of position adjustment of the bolt hole 8.

[0053] Embodiment 2: Based on the embodiment 1, in order to enhance the stability and anti-collision performance of the two flange bodies 1 after connection, the embodiment 2 is as follows: Figures 1 to 3 and Figure 8As shown, a plurality of embedding holes 35 are provided on the side of the flange body 1 away from the rotating disk 3, and the embedding hole 35 is located between two adjacent strip-shaped holes 9. A connecting column assembly is detachably installed on the embedding hole 35, and the connecting column assembly includes a circular tube 36, and circular discs 37 are symmetrically provided inside the circular tube 36. A buffer structure is connected between the two circular discs 37, and a positioning column 38 is provided at the other end of the circular disc 37. A positioning socket adapted to the positioning column 38 is concentrically provided in the embedding hole 35, and an annular embedding strip 39 is provided on the outer wall of both ends of the circular tube 36. An annular ring is provided on the inner wall of the circumference, and the annular embedding strip 39 can be clamped in the annular ring. A plurality of spring pieces 40 are provided on the outer wall of the circumference of the flange body 1, and the spring piece 40 is in an obtuse-angled structure. One end of the spring piece 40 is connected to the outer wall of the flange body 1, and the other end of the spring piece 40 is in sliding contact with the outer wall of the flange body 1. An energy-absorbing ring 41 is provided on the outside of the plurality of spring pieces 40, and the energy-absorbing ring 41 is connected to the corner position of the spring piece 40. A reinforcing rib 46 is provided on the outer wall of the energy-absorbing ring 41, and a staggered tooth structure 42 is provided on the side of the energy-absorbing ring 41 away from the rotating disk 3, as shown in FIG. Figures 1 to 3 As shown;

[0054] In this embodiment, through the provision of the connecting column assembly, on the one hand, the other flange main body 1 installed oppositely can be positioned and placed, avoiding the need for construction workers to lift it in the air, and through the design of the buffer structure, the buffering performance between the two installed flanges can be enhanced. The buffer structure includes multiple groups of buffer assemblies circumferentially arranged between the two discs 37, each group of the buffer assemblies includes an insertion rod 43, and each disc 37 is circumferentially connected with multiple insertion rods 43. The multiple insertion rods 43 on the two relatively arranged discs 37 are staggered, and a buffer spring 44 is also sleeved between the two discs 37. The insertion rods 43 in each group of buffer assemblies are all located in the buffer spring 44, wherein the circular tube 36 is a thin sheet of iron material. After the two flanges are fastened and docked by bolts, the circular tube 36 is squeezed, and the middle part of the outer wall of the circular tube 36 bulges outward to form an extrusion Pressure area, when vibration occurs or relative rotation occurs between the two flange bodies 1, the connecting column assembly can enhance the torsional resistance between the two flange bodies 1 and enhance the installation stability of the two flange bodies 1 after being assembled. Through the arrangement of multiple spring clips 40 and energy-absorbing rings 41, when the flange body 1 is impacted by the outside world, the energy-absorbing ring 41 can be deformed to absorb the impact energy, and the elasticity of the multiple spring clips 40 can offset the impact energy, thereby reducing the damage to the flange body 1 caused by the impact. Through the staggered tooth structure 42, when the two flange bodies 1 are docked, the staggered tooth structures 42 are interlaced and docked to form a connecting rib state, which is used to adapt to the extrusion docking seal between the two flange bodies 1. Spot welding connection can also be performed according to actual conditions during installation, wherein the energy-absorbing ring 41 can be made of iron sheet.

[0055] Embodiment 3: Based on Embodiment 1 and Embodiment 2, this embodiment 3 further proposes a flange installation method, using the aforementioned easy-to-install flange, comprising the following steps:

[0056] S1. Install the adjusting disk 5: Select the flange body 1 according to the pipeline, then place the adjusting disk 5 in the annular groove 4, rotate the adjusting shaft 11, so that it drives the gear 15 to rotate, and the rotation of the gear 15 drives the disk 12 to rotate, so that the positioning protrusion 13 rotates into the groove 48, and the multiple limiting pieces 17 are simultaneously ejected from the outlet 16. After being ejected, the multiple limiting pieces 17 extend into the annular groove 47, so that the adjusting disk 5 can rotate in the annular groove 4;

[0057] S2. Positioning and centering the flange body 1: Put the rotating disk 3 on the pipe, then place the flange body 1 with the adjusting disk 5 installed at the end of the pipe, rotate the adjusting disk 5, and drive the multiple positioning claws to move simultaneously along the radial direction of the flange body 1 through the Archimedean spiral groove 6. After the multiple positioning claws can enter the pipe end, rotate the adjusting disk 5 in the opposite direction so that the multiple positioning claws are tightly against the inner wall of the pipe to achieve the center alignment of the flange body 1;

[0058] S3, welding the flange body 1: after aligning the flange body 1 with the center of the pipe port in step S2, spot welding the welding gap between the flange body 1 and the pipe port;

[0059] S4. Install the rotating disk 3: After the welding between the flange body 1 and the pipe has cooled, move the rotating disk 3 to the flange body 1, and then align the guide blocks 34 on the rotating disk 3 with the notches 33 on the side walls of the annular groove 32, so that the multiple guide blocks 34 enter the annular groove 32. At this time, the rotating disk 3 is in contact with the flange body 1, and the rotating disk 3 is rotated to be installed on one side of the flange body 1;

[0060] S5. Place the connecting column assemblies: Insert and fasten the connecting column assemblies into the multiple embedding holes 35 on the flange body 1, and insert the positioning columns 38 into the corresponding positioning holes;

[0061] S6. Connecting the flange body 1: Repeat steps S1, S2, S3, and S4 to position and install the corresponding flange body 1 on the other pipe port, place a gasket between the two adjustment disks 5, and insert the connecting column assembly in step S5 into the multiple mounting holes 35 on the opposite flange body 1;

[0062] S7. Install bolts: Fully weld the two flange bodies 1 to their corresponding pipe ports after being buckled. After welding is completed, rotate the rotating disks 3 on both sides, align the bolt holes 8 on the two rotating disks 3, install the bolt connectors, and tightly connect the two flange bodies 1.

[0063] It should be noted that the circular through hole 2 between the pipe port and the flange body 1 is fully welded, the adjusting disk 5 is squeezed and sealed between the annular sealing body 27 and the annular sealing groove 28 on the annular disk 26, and the two flanges are squeezed and sealed by a flange installation special gasket placed between the two adjusting disks 5, so that the two flanges can be ensured to be sealed after the bolts are installed.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flange that is easy to install, comprising a flange body (1), wherein a circular through hole (2) is provided at the center of the flange body (1), characterized in that: The invention also includes a rotating disk (3), the rotating disk (3) is rotatably arranged on one side of the flange body (1), and an annular groove (4) is provided on the other side of the flange body (1), the inner diameter of the annular groove (4) is larger than the inner diameter of the circular through hole (2), an adjusting disk (5) is rotatably provided in the annular groove (4) through a detachable structure, a plurality of positioning claws are provided at equal angles on the inner circumference of the circular through hole (2), and the positioning claws are slidably matched with the annular groove (4) along the radial direction of the flange body (1), and the adjusting disk (5) is supported on the annular groove (4). An Archimedean spiral groove (6) is provided on one end surface of the plurality of positioning claws, and teeth (7) cooperating with the Archimedean spiral groove (6) are also provided on the plurality of positioning claws. A plurality of bolt holes (8) are equidistantly provided on the circumference of the rotating disk (3). A plurality of arc-shaped strip holes (9) are equidistantly provided on the circumference of the flange body (1). The strip holes (9) correspond to the bolt holes (8) one by one. A plurality of concentrically arranged planar convex rings (10) are provided on the end surface of the adjusting disk (5) away from the plurality of positioning claws. The detachable structure comprises an adjusting shaft (11), an annular cavity is provided in the adjusting disk (5), a disc (12) is rotatably mounted in the annular cavity, a plurality of positioning protrusions (13) are equidistantly provided on the circumference of the disc (12), and a rack (14) is provided on the disc (12) between two adjacent positioning protrusions (13), one side of each rack (14) is meshed with a gear (15), the adjusting shaft (11) is located in the inner ring of the gear (15) and is coaxially connected to the gear (15), and one end of the adjusting shaft (11) is connected to the inner ring of the gear (15). A side wall close to the Archimedean spiral groove (6) is rotatably connected, and the other end of the adjusting shaft (11) passes through and is rotatably connected to the other side wall of the annular cavity. A plurality of outlets (16) are provided on the annular outer wall of the adjusting disk (5), and a limiting plate (17) is slidably provided on each outlet (16). The limiting plate (17) is elastically connected to the annular cavity, and a groove (48) suitable for inserting the positioning protrusion (13) is provided on the limiting plate (17). A circular groove (47) is also provided on the inner wall of the annular groove (4) for accommodating the limiting plate (17); The width of one side of the limiting piece (17) located inside the annular cavity is greater than the width of the outlet (16), and a spring (18) is connected between this position and the inner wall of the annular cavity. An outwardly protruding arc surface is provided on the side wall of the limiting piece (17) close to the positioning protrusion (13), and the groove (48) is located in the middle of the arc surface. The positioning protrusion (13) slides to the position of the groove (48) and can just push the limiting piece (17) outward from the outlet (16), so that it enters the annular groove (47). The adjustment disk (5) is ensured to rotate in the annular groove (4) through the restriction of the annular groove (47). Under the elastic force of the spring (18), when the positioning protrusion (13) enters the groove (48), the disk (12) will not rotate without rotating the adjustment shaft (11). The rotation connection between the disk (12) and the annular cavity adopts a rotation method with damping friction to avoid arbitrary rotation.

2. A flange easy to install according to claim 1, characterized in that: An annular disk (26) is further provided on the outer wall of the regulating disk (5), and a plurality of annular sealing bodies (27) are provided on the annular disk (26) on a side close to the flange body (1), and an annular sealing groove (28) is correspondingly provided on the flange body (1).

3. A flange easy to install according to claim 2, characterized in that: An annular boss (31) is provided on one side of the flange body (1) close to the rotating disk (3), and an annular embedding groove (32) is provided on the circumferential outer wall of the annular boss (31), a mounting circular hole matching the annular boss (31) is provided on the rotating disk (3), a notch (33) is provided on the side wall of the annular embedding groove (32), a guide block (34) matching the shape of the notch (33) is provided on the inner wall of the mounting circular hole, and the guide block (34) is slidably provided in the annular embedding groove (32).

4. A flange easy to install according to claim 3, characterized in that: The positioning claw is connected by an L-shaped structure formed by a slider and a clamping block (45), and the circular through hole (2) is provided with a sliding groove (20) and a placement groove (21) that match the slider and the clamping block (45). The slider includes a block one (22) and a block two (23), and the block one (22) and the block two (23) are elastically connected. The teeth (7) are provided on the surface of the block one (22), and the sliding groove (20) and the placement groove (21) also form an L-shaped structure. Sliders (24) are provided on both sides of the block two (23), and a positioning groove (25) is also provided on the side wall of the sliding groove (20). The block two (23) and the sliding piece (24) are respectively slidably provided in the sliding groove (20) and the positioning groove (25).

5. A flange easy to install according to claim 4, characterized in that: A rotating groove for rotating the adjusting shaft (11) is provided on the side wall of the annular cavity, a cross groove (19) is provided on the adjusting shaft (11), and the length of the adjusting shaft (11) extending into the rotating groove is less than the axial length of the rotating groove.

6. The flange easy to install according to claim 5, characterized in that: A plurality of embedding holes (35) are provided on a side of the flange body (1) away from the rotating disk (3), and the embedding holes (35) are located between two adjacent strip holes (9). A connecting column assembly is detachably mounted on the embedding holes (35).

7. The flange for easy installation according to claim 6, characterized in that: The connecting column assembly includes a circular tube (36), circular discs (37) are symmetrically arranged inside the circular tube (36), a buffer structure is connected between the two circular discs (37), and a positioning column (38) is arranged at the other end of the circular disc (37), and a positioning hole adapted to the positioning column (38) is concentrically arranged in the embedding hole (35), an annular embedding strip (39) is arranged on the outer wall of the two ends of the circular tube (36), and an annular ring is arranged on the circumferential inner wall of the embedding hole (35), and the annular embedding strip (39) can be clamped in the annular ring.

8. The flange for easy installation according to claim 7, characterized in that: A plurality of spring pieces (40) are provided on the circumferential outer wall of the flange body (1), and the spring pieces (40) are in an obtuse-angled structure. One end of the spring piece (40) is connected to the outer wall of the flange body (1), and the other end of the spring piece (40) is in sliding contact with the outer wall of the flange body (1). An energy absorbing ring (41) is sheathed on the outside of the plurality of spring pieces (40), and the energy absorbing ring (41) is connected to the corner position of the spring piece (40). A staggered tooth structure (42) is provided on the side of the energy absorbing ring (41) away from the rotating disk (3).

9. A flange installation method using the flange easy to install according to claim 8, characterized in that: The following steps are involved: S1. Install the adjusting disk (5): Select the flange body (1) in combination with the pipeline, then place the adjusting disk (5) in the annular groove (4), rotate the adjusting shaft (11), so that it drives the gear (15) to rotate, and the gear (15) rotates to drive the disk (12), so that the positioning protrusion (13) rotates into the groove (48), and the multiple limiting pieces (17) are simultaneously ejected from the outlet (16). After being ejected, the multiple limiting pieces (17) extend into the annular groove (47), so that the adjusting disk (5) can rotate in the annular groove (4); S2. Positioning and centering the flange body (1): Put the rotating disk (3) on the pipe, then place the flange body (1) with the adjusting disk (5) installed at the end of the pipe, rotate the adjusting disk (5), and drive the multiple positioning claws to move simultaneously along the radial direction of the flange body (1) through the Archimedean spiral groove (6). After the multiple positioning claws can enter the pipe end, rotate the adjusting disk (5) in the opposite direction so that the multiple positioning claws are pressed against the inner wall of the pipe, thereby realizing the center alignment of the flange body (1); S3, welding the flange body (1): after aligning the flange body (1) with the center of the pipe port in step S2, spot welding the welding gap between the flange body (1) and the pipe port; S4. Install the rotating disk (3): After the welding between the flange body (1) and the pipe is cooled, move the rotating disk (3) to the flange body (1), and then align the guide blocks (34) on the rotating disk (3) with the notches (33) on the side wall of the annular embedding groove (32), so that multiple guide blocks (34) enter the annular embedding groove (32). At this time, the rotating disk (3) is fitted with the flange body (1), and the rotating disk (3) is rotated to be installed on one side of the flange body (1); S5. Place the connecting column assembly: insert and fasten the connecting column assembly into the multiple embedding holes (35) on the flange body (1), and insert the positioning column (38) into the corresponding positioning hole; S6. Connecting the flange body (1): Repeat the above steps S1, S2, S3, and S4 to position and install the corresponding flange body (1) on the other pipe port, place a gasket between the two adjustment disks (5), and insert the connecting column assembly in step S5 into the multiple mounting holes (35) on the corresponding flange body (1); S7. Install bolts: Fully weld the two flange bodies (1) to their corresponding pipe ports after being buckled. After welding, rotate the rotating disks (3) on both sides, align the bolt holes (8) on the two rotating disks (3), install the bolt connector, and tightly connect the two flange bodies (1).

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