A flange joint

Abstract

This utility model discloses a flange-type connector, including a first pipe body and a second pipe body that abuts against the first pipe body. A flange is fixedly connected to one end of both the first and second pipe bodies. A rotary joint is rotatably connected to the inner wall of the end of the first pipe body away from its flange. A first connector is fixedly connected to the end of the second pipe body away from its flange, and a second connector is fixedly connected to the side of the second pipe body near the first connector. External threads are provided on the outer walls of both the first and second connectors. An internal thread matching the external threads is provided on the inner wall of the rotary joint. A sealing cap is threadedly connected to either the first or second connector. The positional relationship between the second and first pipe bodies can be adjusted according to the positions of the two pipes to be connected, and the orientation of the second pipe body can also be adjusted, thereby facilitating the connection of two pipes in different directions.

Description

Technical Field

[0001] This utility model relates to the field of flange joint technology, specifically a flange joint. Background Technology

[0002] A flange is a component used to connect pipes together, connecting the pipe ends. Chinese utility model patent CN216520139U discloses a high-sealing flange joint. According to its description, a sealing gasket and a sealing ring are provided between the two flange plates to improve the sealing performance of the flange joint. More preferably, the surface of the sealing ring that contacts the positioning groove has several inwardly recessed sealing recesses, further enhancing the sealing performance.

[0003] However, the aforementioned patents and most current flange joints have the following problems: because the two pipes to be connected are in different directions (for example, sometimes the two pipes to be connected are in the same direction, i.e., in a straight line; sometimes the two pipes to be connected are in a perpendicular direction, i.e., in an L-shape), when connecting the two pipes, it is impossible to change the shape or direction of the joint according to the direction of the two pipes, which is not conducive to installation according to the actual situation. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a flange-type connector to solve the problem that the shape or direction of the connector cannot be adjusted according to the actual situation of the two pipes to be connected.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A flanged joint includes a first pipe body and a second pipe body that abuts the first pipe body. One end of both the first and second pipe bodies is fixedly connected to a flange. A rotary joint is rotatably connected to the inner wall of the end of the first pipe body away from its flange. A first connector is fixedly connected to the end of the second pipe body away from the flange. A second connector is fixedly connected to the side of the second pipe body close to the first connector. The outer walls of both the first and second connectors are provided with external threads. The inner wall of the rotary joint is provided with an internal thread that matches the external threads. A sealing cap is threadedly connected to either the first or second connector.

[0007] Preferably, the rotary joint includes a main pipe, at least two limiting discs fixedly connected to the outer wall of the main pipe, and rotary bearings connected to both ends of the main pipe. The inner wall of the main pipe is provided with internal threads. The main pipe is rotatably connected to the first pipe body through the rotary bearings. The inner wall of the first pipe body is provided with at least two limiting grooves that match the limiting discs. The limiting discs are rotatably disposed in the corresponding limiting grooves. The outer wall of each limiting disc is provided with a first sealing ring, and the outer wall of the first sealing ring is attached to the limiting groove.

[0008] In the above technical solution, the main pipe is rotatably connected to the first pipe body via a rotary bearing. After the second connector is connected to the main pipe, the main pipe can be rotated, thereby adjusting the direction of the second pipe body. The main pipe engages with the limiting grooves in the first pipe body via multiple limiting discs. At the same time, a first sealing ring is provided on the limiting discs. The first sealing ring is elastic and has damping between it and the limiting grooves. This allows the main pipe to rotate within the first pipe body while maintaining a seal between the main pipe and the first pipe body.

[0009] Preferably, the outer wall of the main tube located between the limiting discs is provided with several parallel annular protrusions, and the inner wall of the first tube located between the limiting grooves is provided with several parallel annular grooves. The annular protrusions and the annular grooves correspond one-to-one, and the annular protrusions are movably disposed in the corresponding annular grooves.

[0010] In addition to the cooperation between the limiting plate and the limiting groove, the above technical solution also improves the sealing performance of the main pipe and the first pipe body by cooperating with several parallel annular protrusions and annular grooves in the first pipe body.

[0011] Preferably, the outer walls of both the first connector and the second connector are provided with two second sealing rings.

[0012] The above technical solution, by setting a second sealing ring, can improve the sealing performance of the connection between the first connector, the second connector and the sealing cover or rotary joint.

[0013] Preferably, the flange has an annular sealing groove around its central hole, and a third sealing ring is embedded in the sealing groove.

[0014] The above technical solution can improve the sealing performance between adjacent flanges after connection through the third sealing groove.

[0015] Preferably, the second tube body is fixed with a first mounting ear on the side near the first connector, and the sealed end of the sealing cap is fixed with a second mounting ear. The first mounting ear and the second mounting ear are connected by a connecting cable.

[0016] The above technical solution uses a connecting cable to secure the sealing cap to the second tube body, which can prevent the sealing cap from being lost.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] Depending on the positions of the two pipes to be connected, the positional relationship between the second pipe and the first pipe can be adjusted, and the orientation of the second pipe can also be adjusted, thus facilitating the connection of two pipes in different directions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram showing the first and second tubes after separation.

[0021] Figure 3 This is a schematic diagram of a rotary joint;

[0022] Figure 4 This is a cross-sectional view of one connection configuration of this utility model;

[0023] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0024] Figure 6 This is a cross-sectional view of another connection configuration of this utility model;

[0025] In the diagram: 1-First pipe body, 2-Second pipe body, 3-Flange, 4-Rotary joint, 401-Main pipe, 402-Limiting disc, 403-Rotary bearing, 404-Annular protrusion, 405-First sealing ring, 5-First connector, 6-Second connector, 7-Sealing cover, 8-Limiting groove, 10-Annular groove, 11-Second sealing ring, 12-Third sealing ring, 13-First mounting ear, 14-Second mounting ear, 15-Connecting cable. Detailed Implementation

[0026] 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.

[0027] Example 1

[0028] Please see Figure 1-4 A flanged joint includes a first pipe body 1 and a second pipe body 2 that abuts against the first pipe body. A flange 3 is fixedly connected to one end of both the first pipe body 1 and the second pipe body 2. An annular sealing groove is provided around the central hole of the flange 3, and a third sealing ring 12 is embedded within the sealing groove. Several positioning holes are provided around the flange 3 near the sealing groove for installing bolts, thereby connecting it to the flange 3 on the pipe to be connected. The third sealing ring 12 improves the sealing performance of the two flanges after connection.

[0029] A rotary joint 4 is rotatably connected to the inner wall of the end of the first pipe body 1 away from its flange. Specifically, the rotary joint 4 includes a main pipe 401, at least two limiting discs 402 fixedly connected to the outer wall of the main pipe, and rotary bearings 403 connected to both ends of the main pipe. The inner wall of the main pipe 401 is provided with internal threads. The main pipe 401 is rotatably connected to the first pipe body 1 through the rotary bearings 403. The inner wall of the first pipe body 1 is provided with at least two limiting grooves 8 that match the limiting discs. The limiting discs 42 are rotatably disposed in the corresponding limiting grooves 8. The outer wall of each limiting disc 402 is provided with a first sealing ring 405. The outer wall of the first sealing ring 405 is attached to the limiting groove 8. The main pipe 401 is rotatably connected to the first pipe body 1 via a rotary bearing 403. The main pipe 401 is also engaged with the limiting groove 8 inside the first pipe body 1 via multiple limiting discs 402. At the same time, a first sealing ring 405 is provided on each limiting disc 402. The first sealing ring 405 is elastic and has damping between it and the limiting groove 8. On the one hand, it allows the main pipe 401 to rotate inside the first pipe body 1, and on the other hand, it maintains the seal between the main pipe 401 and the first pipe body 1.

[0030] The main pipe 401 has several parallel annular protrusions 404 on its outer wall between the limiting discs 402, and the first pipe body 1 has several parallel annular grooves 10 on its inner wall between the limiting grooves. The annular protrusions 404 and the annular grooves 10 correspond one-to-one, and the annular protrusions 404 are movably disposed within the corresponding annular grooves 10. In addition to the cooperation between the limiting discs 402 and the limiting grooves 8, the main pipe 401 also increases the contact path between the main pipe and the first pipe body 1 through the cooperation between the several parallel annular protrusions 404 and the annular grooves 10 in the first pipe body 1, thereby further improving the sealing performance of the main pipe 401 and the first pipe body 1.

[0031] The second pipe body 2 is fixedly connected to a first connector 5 at the end away from the flange, and a second connector 6 is fixedly connected to the side of the second pipe body 2 close to the first connector. The first connector 5 and the second connector 6 are of the same model, that is, the size, shape and other parameters are the same. The outer walls of the first connector 5 and the second connector 6 are provided with external threads, and the inner wall of the main pipe 401 is provided with internal threads that match the external threads. The first connector 5 and the second connector 6 can be threadedly connected to the main pipe 401 respectively.

[0032] In addition, a sealing cap 7 is threaded onto the first connector 5 or the second connector 6. When the first connector 5 is connected to the main pipe 401, the sealing cap 7 is threaded onto the second connector 6. When the second connector 6 is connected to the main pipe 401, the sealing cap 7 is threaded onto the first connector 5.

[0033] The outer walls of both the first connector 5 and the second connector 6 are provided with two second sealing rings 11. The second sealing rings 11 improve the sealing performance of the connection between the first connector 5, the second connector 6 and the sealing cover 7 or the rotary joint 4.

[0034] The installation method in this embodiment is as follows:

[0035] The positional relationship between the second pipe and the first pipe can be adjusted according to the positions of the two pipes to be connected.

[0036] For example, when the two pipes to be connected are in a vertical position, the second connector 6 is connected to the rotary joint 4, and the sealing cap 7 is connected to the first connector 5, so that the first pipe body 1 and the second pipe body 2 are in an L-shape, thereby connecting the two pipes in the vertical direction. Moreover, by rotating the second pipe body 2, the rotary joint 4 will also be driven to rotate inside the first pipe body 1, thereby adjusting the direction of the second pipe body 2 to adapt to pipes in different directions.

[0037] When the two pipes to be connected are in the same direction, connect the first connector 5 to the rotary joint 4 and connect the sealing cap 7 to the second connector 6, so that the first pipe body 1 and the second pipe body 2 are in a straight line, thereby connecting the two pipes in the same direction.

[0038] The first pipe body, second pipe body, flange, first connector, and second connector described in this embodiment are all made of stainless steel.

[0039] Example 2

[0040] Based on Embodiment 1, a first mounting ear 13 is fixed to the side of the second tube 2 near the first connector, and a second mounting ear 14 is fixed to the closed end of the sealing cap 7. The first mounting ear 13 and the second mounting ear 14 are connected by a connecting cable 15, which can be a rope or a metal chain. The sealing cap 7 is secured to the second tube 2 by the connecting cable 15, preventing the sealing cap 7 from being lost.

[0041] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] 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-type connector, characterized in that: It includes a first pipe body (1) and a second pipe body (2) that is connected to the first pipe body. One end of the first pipe body (1) and the second pipe body (2) is fixedly connected to a flange (3). The inner wall of the end of the first pipe body (1) away from its flange is rotatably connected to a rotary joint (4). The end of the second pipe body (2) away from the flange is fixedly connected to a first connector (5). The side of the second pipe body (2) close to the first connector is fixedly connected to a second connector (6). The outer walls of the first connector (5) and the second connector (6) are both provided with external threads. The inner wall of the rotary joint (4) is provided with an internal thread that matches the external thread. A sealing cap (7) is threaded onto the first connector (5) or the second connector (6).

2. A flanged joint according to claim 1, characterized in that: The rotary joint (4) includes a main pipe (401), at least two limiting discs (402) fixedly connected to the outer wall of the main pipe, and rotary bearings (403) connected to both ends of the main pipe. The inner wall of the main pipe (401) is provided with internal threads. The main pipe (401) is rotatably connected to the first pipe body (1) through the rotary bearings (403). The inner wall of the first pipe body (1) is provided with at least two limiting grooves (8) that match the limiting discs. The limiting discs (402) are rotatably set in the corresponding limiting grooves (8). The outer wall of each limiting disc (402) is provided with a first sealing ring (405). The outer wall of the first sealing ring (405) is attached to the limiting groove (8).

3. A flanged joint according to claim 2, characterized in that: The main tube (401) has several parallel annular protrusions (404) on its outer wall between the limiting plates, and the first tube body (1) has several parallel annular grooves (10) on its inner wall between the limiting grooves. The annular protrusions (404) and the annular grooves (10) correspond one-to-one, and the annular protrusions (404) are movably set in the corresponding annular grooves (10).

4. A flanged joint according to claim 3, characterized in that: The outer walls of the first connector (5) and the second connector (6) are each provided with two second sealing rings (11).

5. A flanged joint according to claim 4, characterized in that: The flange (3) has an annular sealing groove around the center hole, and a third sealing ring (12) is embedded in the sealing groove.

6. A flanged joint according to claim 5, characterized in that: The second tube (2) has a first mounting ear (13) fixed on the side near the first connector, and the sealed end of the sealing cap (7) has a second mounting ear (14) fixed on it. The first mounting ear (13) and the second mounting ear (14) are connected by a connecting cable (15).

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