A high sealing leakproof flange

Abstract

The utility model discloses a kind of leakproof flanges of high sealing property belong to flange technical field, and its technical scheme main points include left flange, the inside welding of left flange has connecting mechanism, the surface welding of connecting mechanism right side has right flange, the surface welding of connecting mechanism has fixed mechanism, connecting mechanism is formed by the slider of left connecting pipe surface and the slide rail of right sleeve inner side Adapted sliding structure, the butt joint of left, right flange provides definite orientation reference, when installation, the directional sliding of slider along slide rail can effectively constrain the butt joint track of flange, avoid the eccentricity, radial misplacement etc. Problem caused by lacking guide in traditional flange, ensure the coaxiality of left connecting pipe and right sleeve, and then make the sealing surface of left, right flange realize uniformly fit, reduce the difficulty of artificial calibration, substantially improve assembly efficiency, simultaneously avoid the uneven stress of sealing surface, gasket local failure etc. Initial hidden danger caused by butt joint deviation from source.

Description

Technical Field

[0001] This utility model relates to the field of flange technology, and in particular to a high-sealing leak-proof flange. Background Technology

[0002] High-sealing leak-proof flanges are flange connections that enhance sealing performance and prevent fluid leakage through special structural design, material selection, or sealing technology. They are widely used in industries with high sealing requirements, such as chemical, petroleum, and natural gas industries.

[0003] To address the aforementioned issues, existing patents have provided solutions. However, existing leak-proof flanges lack a structure for guiding the connection between the left and right flanges, making it difficult to quickly align the sealing surfaces and bolt holes of the left and right flanges. Construction personnel need to repeatedly adjust the flange positions, which not only prolongs the assembly period but also easily leads to problems such as flange eccentricity and radial misalignment due to human error.

[0004] Therefore, a leak-proof flange with high sealing performance is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a high-sealing leak-proof flange that can solve the problem that the existing flanges lack a structure to guide the connection between the left and right flanges, which makes it difficult to quickly align the sealing surfaces and bolt holes of the left and right flanges. Construction personnel need to repeatedly adjust the flange position, which not only prolongs the assembly period, but also easily leads to problems such as flange eccentricity and radial misalignment due to human operation errors.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-sealing leak-proof flange, comprising a left flange, a connecting mechanism welded to the inner side of the left flange, a right flange welded to the right side surface of the connecting mechanism, and a fixing mechanism welded to the surface of the connecting mechanism. The connecting mechanism includes a left connecting pipe, a slider, a right sleeve, a slide rail, several fixing rods, and a magnetic ring. The left connecting pipe is welded to the inner side of the left flange. The slider is welded to the top and bottom of the right side surface of the left connecting pipe, respectively. The right sleeve is welded to the inner side of the right flange. The slide rail is opened at the top and bottom of the left side of the inner side of the right sleeve, respectively. The slider and the slide rail are slidably connected. The fixing rods are welded to the right side of the left flange, and the left side of the magnetic ring is welded to the right side of the fixing rod.

[0007] Preferably, the fixing mechanism includes six magnetic holes, six magnetic rods, six fixing blocks, six fixing screws, six limiting blocks, limiting holes, and fixing nuts, with the magnetic holes located on the right side of the magnetic ring.

[0008] Preferably, the magnetic suction rod is welded to the left side of the right flange, the fixing block is welded to the top surface of the magnetic suction ring, the fixing screw is welded to the right side of the fixing block, and the limiting block is welded to the top surface of the right flange.

[0009] Preferably, the limiting hole is opened on the inner side of the limiting block, the right side of the fixing screw passes through and extends to the outer side of the limiting hole, and the fixing nut is threadedly connected to the surface of the right side of the fixing screw.

[0010] Preferably, a buffer pad is fixedly connected to the inner wall of the magnetic ring, and the inner wall of the buffer pad is fixedly connected to the surface of the left connecting tube.

[0011] Preferably, mounting grooves are provided on the left side of the inner side of the left connecting tube and the right side of the inner side of the right sleeve. A sealing ring is installed on the inner side of the mounting groove, and the inner side of the sealing ring is engraved with anti-slip texture.

[0012] Preferably, an anti-slip pad is movably connected to the right side surface of the fixing screw, and the right side of the anti-slip pad contacts the left side surface of the fixing nut.

[0013] Preferably, a reinforcing ring is welded at the connection between the magnetic rod and the right flange, and the surface of the reinforcing ring is coated with an anti-corrosion coating.

[0014] Preferably, a protective pad is provided on the inner side of the right sleeve, and the side of the protective pad away from the right sleeve is in contact with the surface of the left connecting pipe.

[0015] Preferably, a connecting ring is welded to the side of the fixing screw near the fixing block, and the surface of the connecting ring is coated with an anti-corrosion coating.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The connection mechanism of this application forms a matching sliding structure through the slider on the surface of the left connecting pipe and the slide rail on the inner side of the right sleeve, providing a clear guiding benchmark for the docking of the left and right flanges. During installation, the slider slides along the slide rail in a directional manner, which can effectively constrain the docking trajectory of the flanges and avoid problems such as eccentricity and radial misalignment caused by the lack of guidance in traditional flanges. This ensures the coaxiality of the left connecting pipe and the right sleeve, thereby enabling the sealing surfaces of the left and right flanges to fit evenly, reducing the difficulty of manual calibration, greatly improving assembly efficiency, and avoiding initial hidden dangers such as uneven force on the sealing surface and local failure of the gasket caused by docking deviation. The fixing rod is welded to the right side of the left flange and fixedly connected to the magnetic ring. When the left and right flanges are close to docking, the magnetic ring can generate a magnetic attraction force with the magnetic rod on the right flange side to achieve the pre-positioning and initial fixing of the flange. It can maintain the stability of the flange docking state before the fixing screw is tightened, and avoid the guide structure from detaching due to flange displacement during assembly.

[0018] 2. The fixing mechanism of this application achieves precise matching between the magnetic rod on the left side of the right flange and the magnetic hole on the magnetic ring. While the slider and slide rail of the connecting mechanism are guided, the magnetic rod is inserted into the magnetic hole and achieves secondary positioning through magnetic attraction, further fixing the relative position of the left and right flanges. The dual positioning structure allows the fixing screw to quickly align with the limiting hole of the limiting block, reducing the difficulty of alignment during assembly. In addition, the detachable characteristic of the magnetic engagement also provides convenience for flange inspection and maintenance, reducing damage to the sealing surface during disassembly and assembly. The six circumferentially distributed fixing blocks, fixing screws and limiting blocks form a symmetrical fastening structure. During fastening, the torque control of the fixing nut can make the left and right flanges receive uniform axial pressure, ensuring that the sealing surface and the sealing ring are tightly fitted to form a stable sealing pressure. At the same time, the anti-slip pad on the fixing screw increases the friction between the nut and the limiting block, effectively preventing the nut from loosening due to vibration during equipment operation and maintaining a long-term fastening effect. Attached Figure Description

[0019] Figure 1 This is an overall structural diagram of the high-sealing leak-proof flange of this utility model;

[0020] Figure 2 This is a diagram of the connecting mechanism of this utility model;

[0021] Figure 3 This is a diagram of the fixing mechanism of this utility model;

[0022] Figure 4 This is a diagram of the sealing ring of this utility model;

[0023] Figure 5 This is a diagram of the protective pad of this utility model.

[0024] In the diagram, 1. Left flange; 2. Connecting mechanism; 21. Left connecting pipe; 22. Slider; 23. Right sleeve; 24. Slide rail; 25. Fixing rod; 26. Magnetic ring; 3. Right flange; 4. Fixing mechanism; 41. Magnetic hole; 42. Magnetic rod; 43. Fixing block; 44. Fixing screw; 45. Limiting block; 46. Limiting hole; 47. Fixing nut; 5. Buffer pad; 6. Mounting groove; 7. Sealing ring; 8. Anti-slip pad; 9. Reinforcing ring; 10. Protective pad; 11. Connecting ring. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-5 The present invention provides the following technical solution:

[0027] A high-sealing leak-proof flange includes a left flange 1, a connecting mechanism 2 welded to the inner side of the left flange 1, a right flange 3 welded to the right side surface of the connecting mechanism 2, and a fixing mechanism 4 welded to the surface of the connecting mechanism 2. The connecting mechanism 2 includes a left connecting pipe 21, a slider 22, a right sleeve 23, a slide rail 24, several fixing rods 25, and a magnetic ring 26. The left connecting pipe 21 is welded to the inner side of the left flange 1. The slider 22 is welded to the top and bottom of the right side surface of the left connecting pipe 21. The right sleeve 23 is welded to the inner side of the right flange 3. The slide rail 24 is opened at the top and bottom of the left side of the inner side of the right sleeve 23. The slider 22 and the slide rail 24 are slidably connected. The fixing rods 25 are welded to the right side of the left flange 1, and the left side of the magnetic ring 26 is welded to the right side of the fixing rods 25.

[0028] In this embodiment: by setting the left flange 1 and welding its inner side to the left connecting pipe 21 to form a rigid connection structure, the axial and radial forces of the pipeline can be effectively transmitted, avoiding deformation or breakage of the connection part due to force concentration. At the same time, the flange structure of the left flange 1 provides a reliable welding carrier for the fixing rod 25 of the fixing mechanism 4. The right flange 3 and the left flange 1 form a symmetrical structure, jointly undertaking the connection and force of the pipeline. Its inner side is welded to the right sleeve 23 to form a rigid connection, ensuring that the axial and radial forces of the pipeline can be transmitted. The magnetic suction rod 42 and the limiting block 45 welded on its left side provide a key installation carrier for the fixing mechanism 4, realizing cooperation with the connecting mechanism 2. The left connecting pipe 21 can support the slider 22. The slider 22 is limited and can be connected to the right sleeve 23. The slider 22 and the slide rail 24 of the right sleeve 23 form a sliding connection, providing a clear guide trajectory for the docking of the left and right flanges 3. The right sleeve 23 and the left connecting pipe 21 form a nested connection, which extends the sealing path of the medium flow and reduces the risk of leakage from a structural perspective. The slide rail 24 ensures the smoothness and orientation of the slider 22's sliding, avoiding flange movement during docking. The fixed rod 25 is fixedly connected to the magnetic ring 26, forming a rigid support structure between the left flange 1 and the magnetic ring 26. The magnetic ring 26 achieves pre-positioning and initial fixation of the docking of the left and right flanges 3 through the magnetic attraction with the magnetic rod 42 on the right flange 3 side, avoiding flange displacement during assembly and causing the guide structure to detach.

[0029] Specifically, such as Figure 3 As shown, the fixing mechanism 4 includes six magnetic suction holes 41, six magnetic suction rods 42, six fixing blocks 43, six fixing screws 44, six limiting blocks 45, limiting holes 46 and fixing nuts 47. The magnetic suction holes 41 are located on the right side of the magnetic ring 26.

[0030] Specifically, such as Figure 3 As shown, the magnetic suction rod 42 is welded to the left side of the right flange 3, the fixing block 43 is welded to the top surface of the magnetic suction ring 26, the fixing screw 44 is welded to the right side of the fixing block 43, and the limiting block 45 is welded to the top surface of the right flange 3.

[0031] Specifically, such as Figure 3 As shown, the limiting hole 46 is opened on the inner side of the limiting block 45, the right side of the fixing screw 44 passes through and extends to the outer side of the limiting hole 46, and the fixing nut 47 is threadedly connected to the surface of the right side of the fixing screw 44.

[0032] In this embodiment: a magnetic attraction hole 41 is provided to form a magnetic attraction connection with the magnetic attraction rod 42, and an insertion space is provided for the magnetic attraction rod 42. The magnetic attraction rod 42, the magnetic attraction hole 41 of the magnetic attraction ring 26, and the magnetic attraction ring 26 body form a magnetic attraction engagement. The fixing block 43 can support and limit the fixing screw 44. The fixing screw 44 passes through the limiting hole 46 of the limiting block 45 and then engages with the fixing nut 47 to form a rigid fastening structure. The limiting block 45 can support and limit the limiting hole 46. The diameter of the limiting hole 46 is adapted to the fixing screw 44, which not only ensures that the fixing screw 44 can pass through smoothly, but also forms a radial constraint through the engagement of the hole wall with the fixing screw 44, preventing the fixing screw 44 from shifting during fastening and operation. The fixing nut 47 is threadedly connected to the fixing screw 44, and the axial pressing of the left and right flanges 3 is achieved through torque control.

[0033] Specifically, such as Figure 3 As shown, a buffer pad 5 is fixedly connected to the inner wall of the magnetic ring 26, and the inner wall of the buffer pad 5 is fixedly connected to the surface of the left connecting tube 21.

[0034] Specifically, such as Figure 4 As shown, mounting grooves 6 are provided on the left side of the inner side of the left connecting pipe 21 and the right side of the inner side of the right sleeve 23. A sealing ring 7 is installed on the inner side of the mounting groove 6, and anti-slip texture is engraved on the inner side of the sealing ring 7.

[0035] In this embodiment: By setting the buffer pad 5, its flexible material properties can effectively absorb the thermal expansion and contraction stress caused by temperature fluctuations, as well as the impact stress transmitted by pipeline vibration. By setting the mounting groove 6, the sealing ring 7 can be supported and limited. By setting the sealing ring 7, when the left and right flanges 3 are fastened by the fixing mechanism 4, the sealing ring 7 is subjected to uniform clamping force and undergoes elastic deformation, tightly filling the tiny gaps in the sealing surface, forming a reliable sealing barrier, effectively blocking the leakage channel of the medium. By setting the anti-slip texture, the fit between the sealing ring 7 and the inner wall of the pipeline is enhanced, and the risk of displacement of the sealing ring 7 during medium flow is reduced, maintaining the stability of the seal.

[0036] Specifically, such as Figure 4As shown, an anti-slip pad 8 is movably connected to the surface on the right side of the fixing screw 44, and the right side of the anti-slip pad 8 is in contact with the surface on the left side of the fixing nut 47.

[0037] Specifically, such as Figure 5 As shown, a reinforcing ring 9 is welded at the connection between the magnetic rod 42 and the right flange 3, and the surface of the reinforcing ring 9 is coated with an anti-corrosion coating.

[0038] In this embodiment: by setting the anti-slip pad 8, the friction between the fixing nut 47 and the limiting block 45 can be increased, effectively resisting the tendency of the nut to loosen due to factors such as vibration and temperature changes during equipment operation. By setting the reinforcing ring 9, the force of the magnetic suction rod 42 can be evenly transmitted to the right flange 3, avoiding cracks or breaks in the welded part due to concentrated force. By setting the anti-corrosion coating, the corrosion of corrosive media and humid environment can be effectively isolated, preventing rust from appearing in the welded part.

[0039] Specifically, such as Figure 5 As shown, a protective pad 10 is fitted on the inner side of the right sleeve 23, and the side of the protective pad 10 away from the right sleeve 23 is in contact with the surface of the left connecting pipe 21.

[0040] Specifically, such as Figure 4 As shown, a connecting ring 11 is welded to the side of the fixing screw 44 near the fixing block 43, and the surface of the connecting ring 11 is coated with anti-corrosion paint.

[0041] In this embodiment: by setting the protective pad 10, its flexible material can buffer the rigid friction between the left connecting pipe 21 and the right sleeve 23; by setting the connecting ring 11, the welding strength between the fixing screw 44 and the fixing block 43 can be enhanced, and the tightening torque borne by the fixing screw 44 can be evenly transmitted to the fixing block 43; by setting the anti-corrosion coating, it can effectively resist the erosion of the medium and oxidation and rust, and prevent the connection strength of the welded part from decreasing due to rust.

[0042] Working principle: First, during assembly, the operator aligns the left connecting pipe 21 with the port of the right sleeve 23, causing the slider 22 to embed into the inlet end of the slide rail 24. Then, the operator pushes the left flange 1 or right flange 3 along the slide rail 24, causing the slider 22 to slide directionally along the slide rail 24, thus smoothly bringing the sealing surfaces of the left and right flanges 3 closer together. Then, as the slider 22 continues to slide along the slide rail 24, the magnetic ring 26 connected to the right side of the left flange 1 via the fixing rod 25 gradually approaches the left side of the right flange 3. When the distance between them decreases to the effective magnetic attraction range, the six magnetic rods 42 welded to the left side of the right flange 3 align with the six magnetic holes 41 opened on the right side of the magnetic ring 26. The magnetic attraction force between the magnetic ring 26 and the magnetic rods 42 is then generated, causing the magnetic rods 42 to insert into the magnetic holes 41, achieving the pre-positioning of the left and right flanges 3. At this point, the left connecting pipe 21 and the right sleeve 23 are complete. The screws are nested together, and the fixing screw 44 is aligned with the limiting hole 46. The fixing screw 44 passes smoothly through the limiting hole 46 and extends to the outside. Then, the operator puts anti-slip pads 8 on the surface of the fixing screw 44 extending to the outside of the limiting hole 46, and then screws the fixing nut 47 into the threaded end of the fixing screw 44. Then, the operator uses a torque tool to tighten the fixing nut 47 in a symmetrical order. As the nut is tightened, the fixing screw 44 is subjected to axial tension, which is transmitted to the left flange 1 through the fixing block 43 and the magnetic ring 26. At the same time, the limiting block 45 provides reverse support to the nut, pulling the right flange 3 to the left, so that the left and right flanges 3 gradually come together and generate axial clamping force. The six symmetrically distributed fixing screws 44 are subjected to force simultaneously, ensuring that the clamping force is evenly transmitted to the flange sealing surface. Finally, the operator connects the left flange 1 and the right flange 3 to the external pipeline.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-sealing, leak-proof flange, comprising a left flange (1), characterized in that: A connecting mechanism (2) is welded to the inner side of the left flange (1), and a right flange (3) is welded to the right side surface of the connecting mechanism (2). A fixing mechanism (4) is welded to the surface of the connecting mechanism (2). The connecting mechanism (2) includes a left connecting pipe (21), a slider (22), a right sleeve (23), a slide rail (24), several fixing rods (25), and a magnetic ring (26). The left connecting pipe (21) is welded to the inner side of the left flange (1), and the slider (22) is welded to the left flange (25). The top right side of the surface of the connecting pipe (21) and the bottom right side of the surface of the left connecting pipe (21) are connected. The right sleeve (23) is welded to the inside of the right flange (3). The slide rail (24) is respectively opened at the top left side of the inside of the right sleeve (23) and the bottom left side of the inside of the right sleeve (23). The slider (22) and the slide rail (24) are slidably connected. The fixing rod (25) is welded to the right side of the left flange (1). The left side of the magnetic ring (26) is welded to the right side of the fixing rod (25).

2. The high-sealing leak-proof flange according to claim 1, characterized in that: The fixing mechanism (4) includes six magnetic holes (41), six magnetic rods (42), six fixing blocks (43), six fixing screws (44), six limiting blocks (45), limiting holes (46) and fixing nuts (47). The magnetic holes (41) are located on the right side of the magnetic ring (26).

3. The high-sealing leak-proof flange according to claim 2, characterized in that: The magnetic rod (42) is welded to the left side of the right flange (3), the fixing block (43) is welded to the top surface of the magnetic ring (26), the fixing screw (44) is welded to the right side of the fixing block (43), and the limiting block (45) is welded to the top surface of the right flange (3).

4. The high-sealing leak-proof flange according to claim 2, characterized in that: The limiting hole (46) is opened on the inner side of the limiting block (45), the right side of the fixing screw (44) passes through and extends to the outer side of the limiting hole (46), and the fixing nut (47) is threadedly connected to the surface of the right side of the fixing screw (44).

5. A high-sealing, leak-proof flange according to claim 1, characterized in that: The inner wall of the magnetic ring (26) is fixedly connected to a buffer pad (5), and the inner wall of the buffer pad (5) is fixedly connected to the surface of the left connecting tube (21).

6. The high-sealing leak-proof flange according to claim 1, characterized in that: The left side of the inner side of the left connecting pipe (21) and the right side of the inner side of the right sleeve (23) are both provided with mounting grooves (6). A sealing ring (7) is installed on the inner side of the mounting groove (6), and the inner side of the sealing ring (7) is engraved with anti-slip texture.

7. A high-sealing, leak-proof flange according to claim 2, characterized in that: An anti-slip pad (8) is movably connected to the right side surface of the fixing screw (44), and the right side of the anti-slip pad (8) contacts the left side surface of the fixing nut (47).

8. A high-sealing, leak-proof flange according to claim 2, characterized in that: A reinforcing ring (9) is welded at the connection between the magnetic rod (42) and the right flange (3), and the surface of the reinforcing ring (9) is coated with an anti-corrosion coating.

9. A high-sealing, leak-proof flange according to claim 1, characterized in that: A protective pad (10) is fitted inside the right sleeve (23), and the side of the protective pad (10) away from the right sleeve (23) is in contact with the surface of the left connecting pipe (21).

10. A high-sealing, leak-proof flange according to claim 2, characterized in that: A connecting ring (11) is welded to the side of the fixing screw (44) near the fixing block (43), and the surface of the connecting ring (11) is coated with an anti-corrosion coating.

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