Pipeline flange connecting piece with high sealing performance

Abstract

The utility model relates to the technical field of pipeline connection, discloses a pipeline flange connecting piece with high sealing performance, and solves the problems of insufficient sealing performance and poor connecting stability of pipeline connection. The connecting piece comprises a male flange, a female flange and a pipeline. External threads and locking rings are arranged at the connecting ends of the male flange, the female flange and the pipeline to ensure stable connection, and the inner wall inserting pipe barrel and the annular shaft seat are flexibly butted and sealed. The outer wall concave-convex surface sealing unit forms labyrinth type screwing sealing, the tenon ring and the tenon groove form a tenon groove surface sealing structure, and the sealing performance is greatly improved. The sliding rail on the outer wall of the female flange, the annular locking block and other components cooperate, the stability and reliability of the sealing structure are enhanced, operation is convenient, sealing washers and sealing rings at all connecting parts further reduce the risk of medium leakage, pipeline connection is safer and more reliable, and the sealing structure is suitable for various working conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline connection technical field, concretely to a kind of high sealing pipeline flange connecting piece. BACKGROUND

[0002] Pipeline connecting piece is often used for the connection of liquid transportation pipeline, and its sealing is crucial. When water is transported in water supply pipeline, the water pressure is large, which is easy to generate impact force on the connecting component, resulting in the reduction of the sealing and firmness of the connecting piece. The disassembly and assembly convenience of the connecting piece is also important when installing and repairing the pipeline.

[0003] The existing Chinese patent with publication number CN218935635U discloses a high sealing connecting piece for pipeline, which is composed of a connecting piece shell, an annular groove, an L-shaped clamping groove, a first spring, a second spring, an annular fixing block, a clamping block, a slot, a sealing gasket, a check ring, a sealing ring, a connecting piece, a communication pipe, a cylindrical plug rod, etc. During installation, the clamping block is aligned with the L-shaped clamping groove, the cylindrical plug rod is inserted into the annular groove, and the connecting piece shell is rotated to make the clamping block clamped at the end of the L-shaped clamping groove, and the first spring presses the annular stop block to make the clamping block tightly clamped. The pipeline is inserted into the slots at both ends of the connecting piece, the sealing gasket increases the tightness of the connection between the pipeline and the connecting piece under the action of the second spring, and the check ring and the sealing ring improve the sealing of the connection between the communication pipe and the pipeline. The technical solution has a high requirement for the quality of the spring and other components, and the fatigue or damage of the spring may affect the stability of the connection and sealing.

[0004] In view of the above-mentioned related technology, the present application provides a high sealing pipeline flange connecting piece that can eliminate the drawbacks of existing devices. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of high sealing pipeline flange connecting piece, work is carried out using this device, to solve the problem of insufficient pipeline connection sealing and poor connection stability.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of high sealing pipeline flange connecting piece, including male flange, female flange and pipeline. The outer wall of the end portion of male flange and female flange and pipeline connection is each equipped with external thread, and the external thread is each screwed with locking ring, the inner wall of male flange and female flange is each equipped with helical groove, and the helical groove is each movably connected with the spigot pipe cylinder, the spigot pipe cylinder one end of male flange is fixedly connected with annular shaft seat, and the other end of annular shaft seat is movably connected with the spigot pipe cylinder of female flange. The outer wall of male flange and female flange is fixedly provided with concave-convex surface sealing unit, and the convex structure on male flange cooperates with the concave structure on female flange, to form a labyrinth rotary sealing, and the connecting end of male flange and female flange is fixedly provided with protruding mortise ring, the connecting end of female flange and male flange is provided with mortise, and the mortise ring is inserted into the mortise, to form mortise surface sealing structure.

[0007] The concave-convex sealing unit comprises an arc-shaped convex ring and a locking claw, the arc-shaped convex ring is fixedly connected to the outer wall of the female flange connecting end, a special-shaped structure groove is formed in the arc-shaped convex ring, one end of the locking claw is fixedly connected to the outer wall of the male flange connecting end, a wedge-shaped claw tooth is arranged at the other end of the locking claw, the wedge-shaped claw tooth is movably embedded in the special-shaped structure groove of the arc-shaped convex ring, a ring-shaped groove is formed in the locking claw, and the ring-shaped groove is movably embedded with one end of the arc-shaped convex ring.

[0008] Preferably, the outer wall of the female flange is fixedly provided with a sliding rail.

[0009] Preferably, the arc-shaped convex ring, the locking claw and the sliding rail are at least three and are circumferentially distributed.

[0010] Preferably, the sliding rail is movably connected with a ring-shaped locking block, and the ring-shaped locking block is movably embedded between the grooves formed by the adjacent two arc-shaped convex rings.

[0011] Preferably, the sliding rail is movably connected with a ring-shaped locking block, and the ring-shaped locking block is movably embedded between the grooves formed by the adjacent two arc-shaped convex rings.

[0012] Preferably, the sliding rail is movably connected with a ring-shaped locking block, and the ring-shaped locking block is movably embedded between the grooves formed by the adjacent two arc-shaped convex rings.

[0013] Preferably, the sliding rail is movably connected with a ring-shaped locking block, and the ring-shaped locking block is movably embedded between the grooves formed by the adjacent two arc-shaped convex rings.

[0014] Preferably, the sliding rail is movably connected with a ring-shaped locking block, and the ring-shaped locking block is movably embedded between the grooves formed by the adjacent two arc-shaped convex rings.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. The high sealing property pipeline flange connecting piece has the advantages that the combination of the external thread and the locking ring tightly fixes the flange and the pipeline, effectively prevents loosening caused by factors such as vibration and pressure fluctuation, and lays a solid foundation for long-term stable operation of the pipeline system.

[0017] 2, the utility model discloses a kind of high sealing property pipeline flange connecting piece, the labyrinth screwing seal formed by concave-convex surface sealing unit greatly increases the difficulty of medium leakage, cooperate mortise surface sealing structure, form double insurance, even in extreme harsh working conditions such as high pressure, high temperature, fluid leakage can also be effectively prevented, ensure the sealing property of pipeline system.In addition, the synergistic effect of slide rail, annular lock block and other components makes the sealing structure bear stress evenly and stably, further improves the overall sealing effect, effectively prevents sealing failure caused by external interference, and the sealing ring of sealing washer and each connecting part further reduces the risk of medium leakage, and comprehensively guarantees the high sealing property and high stability of pipeline connection. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure schematic diagram of the utility model;

[0019] Figure 2 It is the plug-in pipe cylinder structure schematic diagram of the utility model;

[0020] Figure 3 It is the male flange structure schematic diagram of the utility model;

[0021] Figure 4 It is the female flane structure schematic diagram of the utility model;

[0022] Figure 5 It is the male flange connection structure schematic diagram of the utility model;

[0023] Figure 6 It is the female flane connection structure schematic diagram of the utility model.

[0024] In the drawing: 1, male flange; 11, mortise ring; 2, female flange; 20, mortise; 120, spiral groove; 121, plug-in pipe cylinder; 122, annular shaft seat; 3, concave-convex surface sealing unit; 31, arc convex ring; 310, special-shaped structure groove; 32, locking claw; 321, wedge-shaped claw tooth; 320, annular groove; 4, slide rail; 5, annular lock block; 6, pipeline; 60, external thread; 61, locking ring; 62, sealing washer. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be described clearly and completely in combination with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0026] To further understand the contents of the utility model, the utility model will be described in detail in combination with the drawings.

[0027] In combination Figures 1-4 A high sealing pipeline flange connector, comprising a male flange 1, a female flange 2 and a pipeline 6. The outer wall of the end connected with the pipeline 6 of the male flange 1 and the female flange 2 is provided with external threads 60, and the external threads 60 are screwed with locking rings 61. This structure facilitates the tight connection of the flange and the pipeline, prevents the pipeline from loosening during use, ensures the stability of the connection, and effectively avoids the leakage problem caused by loose connection. The inner wall of the male flange 1 and the female flange 2 is provided with a spiral groove 120, and the spiral groove 120 is movably connected with a plug-in pipe barrel 121. The plug-in pipe barrel 121 is a hollow H-shaped structure, which is convenient for the limiting insertion of the pipeline 6. One end of the plug-in pipe barrel 121 of the male flange 1 is fixedly connected with an annular shaft seat 122, and the other end of the annular shaft seat 122 is movably connected with the plug-in pipe barrel 121 of the female flange 2. This design allows the plug-in pipe barrel 121 to be flexibly adjusted within a certain range to adapt to different installation requirements, while ensuring the sealing of the connection and reducing the risk of medium leakage. The outer wall of the male flange 1 and the female flange 2 is fixedly provided with a concave-convex sealing unit 3. The convex structure on the male flange 1 cooperates with the concave structure on the female flange 2 to form a labyrinth rotary sealing, greatly increasing the resistance of medium leakage and effectively improving the sealing performance to prevent fluid leakage. The connection end of the male flange 1 and the female flange 2 is fixedly provided with a protruding tenon ring 11, and the connection end of the female flange 2 and the male flange 1 is provided with a mortise 20. The tenon ring 11 is inserted into the mortise 20 to form a mortise surface sealing structure, further enhancing the sealing and stability of the connection and ensuring the reliable operation of the pipeline system under harsh conditions such as high pressure and high temperature.

[0028] The concave-convex sealing unit 3 comprises an arc-shaped convex ring 31 and a locking claw 32. The arc-shaped convex ring 31 is fixedly connected to the outer wall of the connection end of the female flange 2 and the male flange 1. The arc-shaped convex ring 31 is provided with a special-shaped structure groove 310. One end of the locking claw 32 is fixedly connected to the outer wall of the connection end of the male flange 1 and the female flange 2. The other end of the locking claw 32 is provided with a wedge-shaped claw tooth 321. The wedge-shaped claw tooth 321 is movably embedded in the special-shaped structure groove 310 on the arc-shaped convex ring 31. The locking claw 32 is provided with a ring-shaped groove 320. The ring-shaped groove 320 is movably embedded with one end of the arc-shaped convex ring 31. Through the cooperation of the locking claw 32 and the arc-shaped convex ring 31, the stability of the sealing unit is further improved, and the sealing effect is guaranteed. The arc-shaped convex ring 31, the locking claw 32 and the slide rail 4 are provided with at least three and are circumferentially distributed, so that the sealing and connecting structure is more evenly stressed, and the stability and reliability of the overall structure are enhanced.

[0029] The outer wall of the female flange 2 is fixedly provided with a sliding rail 4, which facilitates the locking and releasing of the concave-convex surface sealing unit 3 by the annular locking block 5, and improves the operation convenience. The sliding rail 4 is slidably connected with the annular locking block 5, and the annular locking block 5 is movably embedded between the grooves formed by the adjacent two arc-shaped convex rings 31, so that the relative positions of the arc-shaped convex ring 31 and the locking claw 32 can be effectively fixed, and the loosening of the sealing structure caused by external force and other factors can be prevented. The sliding rail 4 is provided with a limiting block at both ends to prevent the annular locking block 5 from derailing, so as to ensure the normal operation of the annular locking block on the sliding rail and avoid the influence of the derailing of the annular locking block on the integrity of the sealing structure.

[0030] The connecting positions of the pipeline 6 and the locking ring 61 on the male flange 1 and the female flange 2 are all provided with sealing washers 62, which can effectively prevent the leakage at the connecting positions of the pipeline and the flange, and ensure the sealing property of the pipeline system. The connecting positions of the pipeline 6 and the plug-in pipe barrel 121, the mortise ring 11 and the mortise groove 20 are all provided with sealing rings, which further enhance the sealing property of each connecting position and reduce the risk of medium leakage.

[0031] Working principle: during work, the pipeline 6 is first sent into the plug-in pipe barrel 121, the male flange 1 and the female flange 2 are initially connected through the plug-in pipe barrel 121 and the annular shaft seat 122, the mortise ring 11 is inserted into the mortise groove 20 to form a mortise groove surface sealing structure. Then the male flange 1 or the female flange 2 is rotated, the concave-convex surface sealing unit 3 on the outer wall is matched, the convex surface of the male flange 1 and the concave surface of the female flange 2 form a labyrinth rotary sealing, the wedge-shaped claw tooth 321 of the locking claw 32 is embedded into the special-shaped structure groove 310 of the arc-shaped convex ring 31, and then the annular locking block 5 is locked by sliding on the sliding rail 4 and being embedded between the adjacent arc-shaped convex ring 31 grooves. The pipeline 6 is finally locked and fixed with the male flange 1 and the female flange 2 by the locking ring 61 and the sealing washer 62 on the outer thread 60.

[0032] It should be noted that, in the present text, relational terms such as first and second and the like can merely be used to differentiate one entity or action from another, without necessarily requiring or implying any actual such relationship or order between or among the entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0033] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high sealing pipe flange connector, comprising a male flange (1), a female flange (2) and a pipe (6), the male flange (1) and the female flange (2) are provided with external threads (60) on the outer wall of the end connected with the pipe (6), the external threads (60) are screwed with locking rings (61), the inner wall of the male flange (1) and the female flange (2) are provided with spiral grooves (120), the spiral grooves (120) of the male flange (1) and the female flange (2) are movably connected with plug-in pipe barrels (121), one end of the plug-in pipe barrel (121) of the male flange (1) is fixedly connected with an annular shaft seat (122), the other end of the annular shaft seat (122) is movably connected with the plug-in pipe barrel (121) of the female flange (2), characterized in that: The male flange (1) and the female flange (2) are fixedly provided with a concave-convex surface sealing unit (3) on the outer wall, the convex surface structure on the male flange (1) is matched with the concave surface structure on the female flange (2) to form a labyrinth rotary sealing, the connecting end of the male flange (1) and the female flange (2) is fixedly provided with a protruding tenon ring (11), the connecting end of the female flange (2) and the male flange (1) is provided with a mortise (20), the tenon ring (11) is inserted into the mortise (20) to form a mortise surface sealing structure. ​ The concave-convex surface sealing unit (3) comprises an arc-shaped convex ring (31) and a locking claw (32), the arc-shaped convex ring (31) is fixedly connected to the outer wall of the connecting end of the female flange (2) and the male flange (1), a special-shaped structure groove (310) is formed in the arc-shaped convex ring (31), one end of the locking claw (32) is fixedly connected to the outer wall of the connecting end of the female flange (2) and the male flange (1), a wedge-shaped claw tooth (321) is arranged at the other end of the locking claw (32), the wedge-shaped claw tooth (321) is movably embedded into the special-shaped structure groove (310) of the arc-shaped convex ring (31), a ring-shaped groove (320) is formed in the locking claw (32), and the ring-shaped groove (320) is movably embedded with one end of the arc-shaped convex ring (31).

2. A high containment pipe flange connection according to claim 1, wherein: The outer wall of the female flange (2) is fixedly provided with a sliding rail (4).

3. A high containment pipe flange connection according to claim 1, wherein: The arc-shaped convex ring (31), the locking claw (32) and the sliding rail (4) are at least three and are circumferentially distributed.

4. A high containment pipe flange connection according to claim 2, wherein: The sliding rail (4) is movably connected with a ring-shaped locking block (5), and the ring-shaped locking block (5) is movably embedded between the grooves formed by adjacent two arc-shaped convex rings (31).

5. A high containment pipe flange connection according to claim 4, wherein: The sliding rail (4) is provided with a limiting block at both ends to prevent the ring-shaped locking block (5) from derailing.

6. A high containment pipe flange connection according to claim 1, wherein: The connecting position of the pipeline (6), the locking ring (61) on the male flange (1) and the female flange (2) is provided with a sealing washer (62).

7. A high containment pipe flange connection according to claim 1, wherein: The connecting position of the pipeline (6), the plug-in pipe cylinder (121), the tenon ring (11) and the mortise (20) is provided with a sealing ring.

8. A high containment pipe flange connection according to claim 1, wherein: The plug-in pipe cylinder (121) is a hollow H-shaped structure.

Images