Flange for chemical pipeline

Abstract

The flange for the chemical pipeline comprises a first chemical pipe and a second chemical pipe, the end portion of the first chemical pipe is fixedly connected with a sleeved butt joint pipe, and the end, close to the sleeved butt joint pipe, of the second chemical pipe is fixedly connected with a sealing inserting pipe. By the adoption of the structure, the connecting and disassembling process of the first chemical pipe and the second chemical pipe can be further optimized through the clamping mechanism, during installation, after the sealing inserting pipe is inserted into the sleeving butt-joint pipe, the torsional spring pushes the installation ring and the limiting lantern ring to rotate, the clamping pin is sleeved with the limiting lantern ring, and stable inserting is achieved; during disassembly, the adjusting push frame and the adjusting ring are twisted, the torsional spring contracts to drive the limiting lantern ring to be separated, in the installation process, the adjusting push frame compresses the torsional spring, the torsional spring resets and is limited again after installation is completed, the whole operation only needs to adjust the push frame and the adjusting ring, disassembly and assembly can be rapidly completed, the maintenance efficiency is improved, and through cooperation of the limiting lantern ring and the bayonet lock, the maintenance cost is reduced. And the connection stability is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of chemical pipeline connection technology, and specifically relates to a flange for chemical pipelines. Background Technology

[0002] As a key component for fluid transportation in the chemical industry, the performance and connection method of chemical pipes are crucial to the safety and efficiency of chemical production. Ultra-high molecular weight polyethylene (UHMWPE) has become an ideal manufacturing material for chemical pipes due to its excellent comprehensive performance. This thermoplastic engineering plastic, which is polymerized from ethylene and butadiene monomers under the action of a catalyst and has an average molecular weight of over 2 million, has the characteristics of wear resistance, low temperature resistance, corrosion resistance, self-lubrication, and excellent impact resistance. Its wear resistance surpasses that of polytetrafluoroethylene, nylon, carbon steel, and other materials, and it can work stably for a long time in extreme temperature environments ranging from -269℃ to +80℃. Therefore, it is widely used in chemical pipeline systems.

[0003] In actual use scenarios of chemical pipelines, there is a frequent need for connection between pipelines. The connection is usually achieved by using flanges and bolts. However, the traditional bolt connection method has significant drawbacks. Its disassembly and assembly process is cumbersome, which not only consumes a lot of physical strength of operators, but is also inefficient and cannot meet the needs of rapid installation and maintenance in chemical production.

[0004] To address the problems of traditional connection methods, Chinese patent CN216479479U discloses a flange structure for chemical pipelines. This structure reduces the number of bolts used through a first and second connection mechanism, improving installation convenience to some extent. However, this device still has several shortcomings. First, the overall convenience of the device structure can still be improved, as it still relies on bolt-assisted connections, limiting its ability to facilitate rapid disassembly and maintenance. Second, the device lacks an effective support structure for the chemical pipeline. During use, if the chemical pipeline is accidentally touched, it is easily damaged and broken, potentially leading to leaks of harmful chemical gases or liquids, seriously threatening production safety and environmental safety. Therefore, there is an urgent need to optimize the design of existing chemical pipeline flange connection devices to meet the efficient and safe development needs of the chemical industry. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a flange for chemical pipelines to solve the problem that flanges are inconvenient to disassemble and assemble quickly during the application of existing technologies.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A flange for a chemical pipeline includes a first chemical pipe and a second chemical pipe. A sleeved connecting pipe is fixedly connected to the end of the first chemical pipe. A sealing plug is fixedly connected to the end of the second chemical pipe near the sleeved connecting pipe. The sealing plug is inserted into the sleeved connecting pipe. An elastic snap-fit ​​mechanism is fixedly connected to the outer surface of the first chemical pipe. The first chemical pipe is connected to the second chemical pipe through the elastic snap-fit ​​mechanism. A support mechanism is fixedly connected to the outer surfaces of both the first and second chemical pipes.

[0008] The elastic locking mechanism includes an outer ring and a mating ring. An elastic locking group is fixedly connected inside the outer ring. The outer ring is fixedly connected to the end of the first chemical pipe near the second chemical pipe. The mating ring is fixedly connected to the end of the second chemical pipe near the first chemical pipe. The mating ring is fixedly connected with locking pins arranged in a ring at equal intervals on the side near the first chemical pipe. The locking pins and the elastic locking group are locked together.

[0009] Furthermore, the elastic locking assembly includes a torsion spring, which is fixedly connected to the inside of the outer ring. An installation ring is fixedly connected to the outer end of the torsion spring. The installation ring is rotatably connected to the inner end of the outer ring. The installation ring is arranged in a ring shape with equal intervals on the side near the mating ring and is fixedly connected to a limiting collar. The end of the locking pin is inserted into the inside of the limiting collar.

[0010] Furthermore, the limiting collar is generally arc-shaped, and the locking pin is also generally arc-shaped. Both the limiting collar and the locking pin are arranged concentrically with the torsion spring.

[0011] Furthermore, the mounting ring is fixedly connected to an adjusting pusher in a ring-shaped arrangement at equal intervals on the outer surface of the outer sleeve ring, and an adjusting ring is fixedly connected to the outer side of the adjusting pusher.

[0012] Furthermore, the support mechanism includes an outer ring, which is fixedly installed on the outer surface of the first chemical pipe and the second chemical pipe. A slip ring is rotatably connected to the outer side of the outer ring, and a support component is fixedly connected to the bottom of the slip ring.

[0013] Furthermore, the support assembly includes a fixing block, which is fixedly connected to the bottom of the slip ring. A sleeve frame is fixedly installed at the bottom of the fixing block. A support rod is slidably connected inside the sleeve frame. An mounting plate is fixedly installed at the bottom of the support rod. Mounting holes are provided at both ends of the mounting plate. The mounting holes are countersunk holes. A mounting screw is threaded to the lower outer end of the sleeve frame.

[0014] Furthermore, the mounting screw is a hand-tightening screw, and the outer side of the support rod has locking holes arranged linearly at equal intervals, with the end of the mounting screw inserted into the locking hole.

[0015] In summary, the present invention has the following main advantages:

[0016] First, this device, through the setting of the snap-fit ​​mechanism, can further optimize the connection and disassembly process of the first and second chemical pipes. During installation, after the sealing plug is inserted into the sleeved connector, the torsion spring pushes the installation ring and the limiting sleeve to rotate, so that the limiting sleeve locks the snap pin, achieving a stable connection. During disassembly, the adjusting push frame and the adjusting ring are twisted, and the torsion spring contracts, causing the limiting sleeve to separate. During the installation process, the adjusting push frame compresses the torsion spring. After the installation is completed, the torsion spring resets and repositions. The entire operation only requires adjusting the push frame and the adjusting ring, which can quickly complete the disassembly and assembly. This not only improves maintenance efficiency, but also ensures the stability of the connection through the cooperation of the limiting sleeve and the snap pin.

[0017] Secondly, during application, this device employs a support mechanism to provide stable support for the connection of chemical pipes. After the first and second chemical pipes are connected, the direction of the support assembly can be adjusted by rotating the limiting collar, and the support length can be adjusted by sliding the support rod inside the sleeve frame. The mounting plate is fixed with bolts using the mounting holes on the mounting plate, and the mounting screw is inserted into the locking hole to achieve quick locking between the sleeve frame and the support rod. The mounting plate is fixed to the wall, equipment, or frame, which can effectively support and reinforce the chemical pipes, enhance the adaptability of the device to different external environments, reduce the risk of chemical pipes being damaged or broken due to accidental contact, and ensure the safety of chemical production. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a bottom view structural diagram of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of this utility model in the disassembled state near the second chemical pipe;

[0021] Figure 4 This is a schematic diagram of the structure of this utility model in the disassembled state near the first chemical pipe;

[0022] Figure 5 This is a schematic diagram of the flexible card stack structure of this utility model.

[0023] Reference numerals in the attached drawings: 1. First chemical pipe; 2. Second chemical pipe; 3. Sleeve butt joint pipe; 4. Sealing insert pipe; 5. Support mechanism; 51. Outer ring; 52. Slip ring; 53. Support assembly; 531. Fixing block; 532. Sleeve frame; 533. Support rod; 534. Mounting plate; 535. Mounting hole; 536. Mounting screw; 537. Clip hole; 6. Clip-on mechanism; 61. Outer ring; 62. Butt joint ring; 63. Elastic clip group; 631. Torsion spring; 632. Mounting ring; 633. Limiting sleeve; 634. Adjusting push frame; 635. Adjusting ring; 64. Locking pin. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] Please refer to Figure 1-5 A flange for a chemical pipeline in this embodiment includes a first chemical pipe 1 and a second chemical pipe 2. A sleeve connecting pipe 3 is fixedly connected to the end of the first chemical pipe 1. A sealing insert pipe 4 is fixedly connected to the end of the second chemical pipe 2 near the sleeve connecting pipe 3. The sealing insert pipe 4 is inserted into the sleeve connecting pipe 3. An elastic snap-fit ​​mechanism 6 is fixedly connected to the outer surface of the first chemical pipe 1. The first chemical pipe 1 is connected to the second chemical pipe 2 through the elastic snap-fit ​​mechanism 6. A support mechanism 5 is fixedly connected to the outer surfaces of both the first chemical pipe 1 and the second chemical pipe 2.

[0027] The elastic locking mechanism 6 includes an outer ring 61 and a mating ring 62. An elastic locking assembly 63 is fixedly connected inside the outer ring 61. The outer ring 61 is fixedly connected to the end of the first chemical pipe 1 near the second chemical pipe 2. The mating ring 62 is fixedly connected to the end of the second chemical pipe 2 near the first chemical pipe 1. On the side of the mating ring 62 near the first chemical pipe 1, locking pins 64 are arranged in a ring at equal intervals and fixedly connected. The locking pins 64 and the elastic locking assembly 63 engage. During the application of this device, when it is necessary to connect the first chemical pipe 1 and the second chemical pipe 2, the sealing connector 4 at the end of the second chemical pipe 2 is inserted into the sleeved mating connector 3 of the first chemical pipe 1, while simultaneously aligning the locking pins 64 on the mating ring 62 outwards. During insertion, the elastic locking assembly 63 inside the collar 61 undergoes elastic deformation due to the compression of the locking pin 64. After the locking pin 64 is fully inserted, the elastic locking assembly 63 returns to its original shape and engages with the locking pin 64, thereby firmly connecting the first chemical pipe 1 and the second chemical pipe 2. When disassembly is required, an external force is applied to the elastic locking assembly 63 to cause it to elastically deform again, disengaging from the locking state with the locking pin 64, thus separating the two pipes. The support mechanism 5 is fixed to the outer surface of the first chemical pipe 1 and the second chemical pipe 2 respectively, providing support and reinforcement for the pipe connection, enhancing the stability and adaptability of the device, and ensuring that the chemical pipes will not be damaged or broken due to accidental contact during use.

[0028] Please refer to Figures 1-4The support mechanism 5 includes an outer ring 51, which is fixedly installed on the outer surface of the first chemical pipe 1 and the second chemical pipe 2. A slip ring 52 is rotatably connected to the outer side of the outer ring 51. A support assembly 53 is fixedly connected to the bottom of the slip ring 52. The support assembly 53 includes a fixing block 531, which is fixedly connected to the bottom of the slip ring 52. A sleeve frame 532 is fixedly installed at the bottom of the fixing block 531. A support rod 533 is slidably connected inside the sleeve frame 532. An mounting plate 534 is fixedly installed at the bottom of the support rod 533. Mounting holes 535 are provided at both ends of the mounting plate 534. The mounting holes 535 are countersunk holes. A mounting screw 536 is threaded to the lower outer side of the sleeve frame 532. The mounting screw 536 is a hand-tightening screw. Locking holes 537 are linearly arranged at equal intervals on the outer side of the support rod 533. The end of the mounting screw 536 is inserted into the locking hole 537. During the application of this device, when the first chemical pipe 1... After connecting with the second chemical pipe 2, the outer ring 51 installed on the outer surface of the pipe can adjust the circumferential angle of the support component 53 through the slip ring 52 to adapt to different support requirements. After adjusting to the appropriate angle, the support rod 533 is slidable in the sleeve 532 according to the required support height to change the overall length of the support component 53. When the length is adjusted to the correct position, the hand-tightening installation screw 536 is rotated so that its end is inserted into the corresponding locking hole 537 on the outside of the support rod 533 to lock the sleeve 532 and the support rod 533. Subsequently, the mounting plate 534 is fixed to the wall, equipment rack and other support structures with bolts through the countersunk mounting holes 535 at both ends of the mounting plate 534, thereby providing stable support for the chemical pipe. The countersunk hole design allows the bolt head to sink into the mounting plate 534 to avoid the risk of collision caused by protrusion; the hand-tightening screw makes it easy for operators to quickly adjust and lock the length of the support component 53 without the need for tools, thus improving installation efficiency.

[0029] Please refer to Figures 1-5The elastic locking assembly 63 includes a torsion spring 631, which is fixedly connected to the inside of the outer ring 61. An installation ring 632 is fixedly connected to the outer end of the torsion spring 631, and the installation ring 632 is rotatably connected to the inner end of the outer ring 61. A limiting collar 633 is fixedly connected to the side of the installation ring 632 near the docking ring 62 in a ring-like arrangement at equal intervals. The end of a locking pin 64 is inserted into the inside of the limiting collar 633. The limiting collar 633 and the locking pin 64 are both arc-shaped. The limiting collar 633 and the locking pin 64 are concentric with the torsion spring 631. An adjusting pusher 634 is fixedly connected to the outer surface of the outer ring 61 in a ring-like arrangement at equal intervals. An adjusting ring 635 is fixedly connected to the outer side of the adjusting pusher 634. During the use of this device, when the first chemical pipe 1 and the second chemical pipe 2 are docked, the device... When the locking pin 64 on the connecting ring 62 is inserted into the outer ring 61, the torsion spring 631 is in its natural state, pushing the mounting ring 632 to rotate, causing the limiting sleeve 633 fixed on the mounting ring 632 to rotate synchronously. Since both the limiting sleeve 633 and the locking pin 64 are arc-shaped and concentric with the torsion spring 631, the rotating limiting sleeve 633 can accurately fit the end of the locking pin 64, achieving a locking engagement. During disassembly, the operator pushes the adjusting pusher 634 through the adjusting ring 635, causing the mounting ring 632 to rotate in the opposite direction against the elastic force of the torsion spring 631, so that the limiting sleeve 633 disengages from the locking pin 64 and is released from the locked state. Throughout the process, the elastic restoring force of the torsion spring 631 ensures a tight fit between the limiting sleeve 633 and the locking pin 64, while the arc-shaped design optimizes the guidance and fit during engagement, making the pipe connection and disassembly operations simple and efficient.

[0030] Operating Principle and Advantages: During application, the innovative design of the snap-fit ​​mechanism 6 significantly improves the efficiency of connecting and disassembling chemical pipes. When installing the first chemical pipe 1 and the second chemical pipe 2, the sealing connector 4 is inserted into the sleeve connector 3. At this time, the torsion spring 631 generates a restoring force, pushing the installation ring 632 to rotate. The rotation of the installation ring 632 drives the limiting collar 633 to rotate synchronously, allowing the limiting collar 633 to accurately fit onto the outer surface of the snap pin 64. Thus, after the sleeve connector 3 and the sealing connector 4 are connected, the elasticity of the torsion spring 631 causes the limiting collar 633 and the snap pin 64 to mutually limit and fix each other, achieving a stable connection and ensuring the device operates smoothly. During the process, when it is necessary to separate two chemical pipes, the operator twists the adjusting push bracket 634 and the adjusting ring 635. This action will cause the torsion spring 631 to contract, thereby separating the limiting sleeve 633 from the adjusting push bracket 634, completing the quick disassembly. Similarly, during the installation process, the torsion spring 631 is compressed by adjusting and twisting the adjusting push bracket 634. After the installation is completed, the groove of the adjusting ring 635 is released, and the torsion spring 631 resets, driving the limiting sleeve 633 and the adjusting push bracket 634 to reposition. The entire process only requires operating the adjusting push bracket 634 and the adjusting ring 635 to achieve quick disassembly and assembly of chemical pipes, which not only improves maintenance efficiency, but also ensures the stability of the connection between the two chemical pipes due to the reliable positioning of the limiting sleeve 633 and the locking pin 64.

[0031] Furthermore, the support mechanism 5 provides reliable support for the chemical pipe connection. After the first chemical pipe 1 and the second chemical pipe 2 are connected and installed, the support direction of the support component 53 can be flexibly adjusted by rotating the limiting collar 633 on the outer surface of the outer ring 51. After determining the support direction, the support rod 533 inside the sleeve frame 532 can be slid according to the actual support requirements to achieve flexible adjustment of the support length. After the support length is adjusted, the mounting plate 534 is fixed in a suitable position using the mounting holes 535 on the mounting plate 534, along with bolts, screws, and other connecting parts. Insert the mounting screw 536 into the corresponding locking hole 537. By limiting the insertion of the mounting screw 536 and the locking hole 537, the locking installation of the sleeve 532 and the support rod 533 is quickly completed. In use, the mounting plate 534 is fixed with bolts through the mounting hole 535. The support component 53 can be installed on the wall, surrounding equipment or frame, etc., thereby providing effective support and reinforcement for the first chemical pipe 1 and the second chemical pipe 2. This design enhances the adaptability of the device to different external environments 51, effectively avoids damage and breakage of chemical pipes due to accidental contact, and ensures the safety of the chemical production process.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flange for chemical pipelines, characterized in that: The system includes a first chemical pipe (1) and a second chemical pipe (2). The end of the first chemical pipe (1) is fixedly connected to a sleeve connecting pipe (3). The end of the second chemical pipe (2) near the sleeve connecting pipe (3) is fixedly connected to a sealing insert pipe (4). The sealing insert pipe (4) is inserted into the sleeve connecting pipe (3). The outer surface of the first chemical pipe (1) is fixedly connected to an elastic snap-fit ​​mechanism (6). The first chemical pipe (1) is connected to the second chemical pipe (2) through the elastic snap-fit ​​mechanism (6). The outer surfaces of the first chemical pipe (1) and the second chemical pipe (2) are both fixedly connected to a support mechanism (5). The elastic snap-fit ​​mechanism (6) includes an outer ring (61) and a mating ring (62). An elastic snap-fit ​​assembly (63) is fixedly connected inside the outer ring (61). The outer ring (61) is fixedly connected to one end of the first chemical pipe (1) near the second chemical pipe (2). The mating ring (62) is fixedly connected to one end of the second chemical pipe (2) near the first chemical pipe (1). The mating ring (62) is fixedly connected with snap-fit ​​pins (64) arranged in a ring at equal intervals on one side near the first chemical pipe (1). The snap-fit ​​pins (64) and the elastic snap-fit ​​assembly (63) snap together.

2. The flange for chemical pipelines according to claim 1, characterized in that: The elastic clip (63) includes a torsion spring (631), which is fixedly connected to the inside of the outer ring (61). The outer end of the torsion spring (631) is fixedly connected to an mounting ring (632), which is rotatably connected to the inner end of the outer ring (61). The mounting ring (632) is arranged in a ring shape with equal intervals on the side close to the docking ring (62) and fixedly connected to a limiting collar (633). The end of the locking pin (64) is inserted into the inside of the limiting collar (633).

3. A flange for chemical pipelines according to claim 2, characterized in that: The limiting collar (633) is generally arc-shaped, and the locking pin (64) is also generally arc-shaped. The limiting collar (633) and the locking pin (64) are both concentric with the torsion spring (631).

4. A flange for chemical pipelines according to claim 3, characterized in that: The mounting ring (632) is located on the outer surface of the outer sleeve ring (61) and is fixedly connected to the adjusting push bracket (634) in a ring-shaped arrangement at equal intervals. The adjusting push bracket (634) is fixedly connected to the outer side of the adjusting ring (635).

5. A flange for chemical pipelines according to claim 1, characterized in that: The support mechanism (5) includes an outer ring (51), which is fixedly installed on the outer surface of the first chemical pipe (1) and the second chemical pipe (2). A slip ring (52) is rotatably connected to the outer side of the outer ring (51), and a support component (53) is fixedly connected to the bottom of the slip ring (52).

6. A flange for chemical pipelines according to claim 5, characterized in that: The support assembly (53) includes a fixing block (531), which is fixedly connected to the bottom of the slip ring (52). A sleeve frame (532) is fixedly installed at the bottom of the fixing block (531). A support rod (533) is slidably connected inside the sleeve frame (532). An mounting plate (534) is fixedly installed at the bottom of the support rod (533). Mounting holes (535) are provided at both ends of the mounting plate (534). The mounting holes (535) are countersunk holes. A mounting screw (536) is threadedly connected to the lower outer end of the sleeve frame (532).

7. A flange for chemical pipelines according to claim 6, characterized in that: The mounting screw (536) is a hand-tightening screw. The outer side of the support rod (533) is provided with locking holes (537) arranged linearly at equal intervals. The end of the mounting screw (536) is inserted into the locking hole (537).

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