A snap-fit pre-seal quick-mount flange structure

Abstract

The utility model discloses a buckle type presealing quick mounting flange structure applied to the field of flange connecting structure, including inner flange and outer flange, the outer surface of inner flane is attached with the inner surface of outer flane and is set up, through setting positioning assembly and quick release assembly between inner flane and outer flane, when inner flane and outer flane are connected, the positioning pin is inserted inside the positioning slot under the action of spring elasticity, through the positioning pin to the limiting fixing of inner flane and outer flane, make inner flane and outer flane can not occur relative rotation, on the contrary, when needing to split inner flane and outer flane, press the contact block, make the contact block push the positioning pin and compress spring, can make the positioning pin exit the positioning slot, realize the quick mounting quick release of inner flane and outer flane, can not only keep the advantage that quick mounting type flange is convenient, time -saving and labour -saving, but also can effectively solve the relative rotation problem that may occur between flanges after locking, improve the reliability of connection.

Description

Technical Field

[0001] This utility model relates to the field of flange connection structures, and in particular to a snap-fit ​​pre-sealed quick-install flange structure. Background Technology

[0002] A flange connection is a detachable joint in which two pipes, fittings or equipment are first fixed to a flange, then a flange gasket is placed between the two flanges, and finally the two flanges are tightened with bolts to make them tightly connected. Any structure that can be used for flange connection can be called a flange structure.

[0003] Traditional bolted flange connections require individual bolt installation, resulting in slow operation. To improve installation speed, some existing quick-install flanges utilize snap-fit, clip-on, or snap-on methods for rapid installation. For example, Chinese Patent Publication No. CN105240630B discloses a boltless quick-install large flange assembly, which includes a snap-fit ​​device to clamp the flange assembly. This device uses a wedge assembly and a wedge fixing plate to achieve the snap-fit. Therefore, disassembly only requires removing the wedge fixing plate and wedge assembly. Compared to traditional bolted connections, the wedge fixing plate and wedge assembly are easier to remove and install. Furthermore, a sealing structure between the flanges ensures a tight seal.

[0004] However, existing quick-install flange structures still have some obvious limitations in use. For example, after locking, some quick-install structures lack an effective circumferential positioning mechanism between the two connected flanges. Under conditions such as vibration, pressure fluctuation, or temperature change, slight relative rotation or slippage may occur between the flanges, leading to seal failure. It may also weaken the overall rigidity and stability of the connection, posing a potential threat to the safe operation of the system. Therefore, we propose a snap-fit ​​pre-sealed quick-install flange structure to solve the problems mentioned above. Utility Model Content

[0005] The core of this utility model lies in the circumferential positioning of the inner and outer flanges through the connection of the positioning component and the quick-release component, so as to solve the problem that there is no effective circumferential positioning mechanism between two interconnected flanges in the prior art. Under working conditions such as vibration, pressure fluctuation or temperature change, the flanges may undergo slight relative rotation or slippage, resulting in sealing failure. At the same time, the first sealing ring and the second sealing ring generate radial extrusion force relative to the inner and outer flanges, thereby improving the sealing effect.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A snap-fit ​​pre-sealed quick-install flange structure includes an inner flange and an outer flange. The outer surface of the inner flange is fitted with the inner surface of the outer flange. A positioning component is provided inside the inner flange, and the positioning component includes a positioning pin movably connected inside the inner flange. A quick-release component is provided inside the outer flange, and the quick-release component includes a contact block movably connected inside the outer flange. A spring is fixedly connected to the end of the positioning pin away from the contact block.

[0008] The inner surface of the outer flange is provided with a connecting groove and an annular groove, and the connecting groove and the annular groove are interconnected. The connecting groove is arranged parallel to the axis of the outer flange, and the annular groove is arranged circumferentially along the inner circumference of the outer flange. The quick-release assembly also includes a positioning groove opened inside the outer flange and connected to the annular groove. The positioning pin can be inserted into the positioning groove through the annular groove.

[0009] As a further improvement of this application, the positioning assembly also includes a mounting groove formed inside the inner flange, the positioning pin is slidably connected to the inner flange through the mounting groove, and the end of the spring away from the positioning pin is fixedly connected to the inside of the mounting groove.

[0010] As a further improvement of this application, the end of the locating pin facing the contact block is provided with a first inclined structure, the contact block is slidably connected to the inside of the outer flange through the locating groove, and the end of the contact block facing the inside of the outer flange is provided with a second inclined structure that cooperates with the locating pin.

[0011] As a further improvement of this application, the positioning components are evenly distributed symmetrically about the inner flange axis within the inner flange, and the connecting groove and quick-release components are evenly distributed symmetrically about the outer flange axis within the outer flange.

[0012] As a further improvement of this application, the positioning component is configured to cooperate with the connecting groove, and the positioning component forms a sliding connection with the outer flange through the connecting groove and the annular groove.

[0013] As another improvement of this application, a safety component is provided inside the outer flange, and a movable groove that cooperates with the safety component is opened inside the outer flange. The safety component is located at the end of the contact block facing the outside of the outer flange.

[0014] As a further improvement to this application, the safety component includes a baffle plate disposed perpendicular to the axis of the outer flange, and the baffle plate is circumferentially movable around the axis of the outer flange. The safety component also includes a lever plate fixedly connected to the end face of the baffle plate opposite to the contact block.

[0015] As a further improvement to this application, a first sealing ring and a second sealing ring are also provided between the inner flange and the outer flange. The outer surfaces of the first sealing ring and the second sealing ring facing the inner flange are both inclined, and the contact portion between the inner flange and the first sealing ring and the second sealing ring is provided with a chamfer structure that matches the inclined surface.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. This solution uses the spring force to insert the locating pin into the locating groove when connecting the inner and outer flanges, thus fixing the inner and outer flanges in place. Conversely, when it is necessary to separate the inner and outer flanges, pressing the contact block moves the locating pin and compresses the spring, allowing the locating pin to exit the locating groove, facilitating the separation of the inner and outer flanges. This solution retains the advantages of quick-install flanges, such as convenient operation and saving time and effort, while effectively solving the problem of relative rotation between flanges after locking, thus improving connection reliability.

[0018] 2. This solution uses a first sealing ring and a second sealing ring to fill the space between the inner flange and the outer flange. The outer surfaces of both the first and second sealing rings facing the inner flange are inclined, and the contact portion between the inner flange and the first and second sealing rings has a chamfered structure that matches the inclined surface. When the inner flange and the outer flange are connected, the first and second sealing rings are under pressure between the inner and outer flanges, and the first and second sealing rings are tightly fitted to the inner and outer surfaces of the inner flange, thereby achieving a pre-sealing effect between the inner and outer flanges. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the overall structure of the first embodiment of the present invention;

[0020] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0021] Figure 3 This is a schematic diagram of the overall structure of the first embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the overall structure of the inner flange in the first embodiment of this utility model;

[0023] Figure 5 This is a schematic diagram of the exploded structure of the inner flange and outer flange in the cross-section of the first embodiment of this utility model;

[0024] Figure 6 This utility model Figure 5 A structural diagram from another perspective;

[0025] Figure 7 This is a schematic diagram of the overall structure in the second embodiment of the present invention.

[0026] Figure 8 This utility model Figure 7A magnified structural diagram at point B in the middle.

[0027] Explanation of the labels in the diagram:

[0028] 1. Inner flange; 2. Outer flange; 3. Positioning assembly; 31. Positioning pin; 32. Spring; 33. Mounting groove; 4. Quick release assembly; 41. Contact block; 42. Positioning groove; 5. First sealing ring; 6. Second sealing ring; 7. Connecting groove; 8. Annular groove; 9. Safety assembly; 91. Baffle; 92. Paddle. Detailed Implementation

[0029] The technical solution will now be clearly and completely described with reference to the accompanying drawings in the embodiments of this utility model.

[0030] First implementation method:

[0031] Please see Figures 1-6 As shown, a snap-fit ​​pre-sealed quick-install flange structure includes an inner flange 1 and an outer flange 2, specifically as follows: Figure 1 and Figure 3 As shown, when the inner flange 1 and the outer flange 2 are connected, the outer surface of the inner flange 1 is fitted to the inner surface of the outer flange 2. Furthermore, in combination... Figure 2 and Figure 4 As shown, the inner flange 1 is equipped with a positioning assembly 3, which includes a positioning pin 31 movably connected inside the inner flange 1. The outer flange 2 is equipped with a quick-release assembly 4, which includes a contact block 41 movably connected inside the outer flange 2 and a positioning groove 42 formed inside the outer flange 2. A spring 32 is fixedly connected to the end of the positioning pin 31 away from the contact block 41. Specifically, as shown... Figure 2 As shown in the figure, when the inner flange 1 and the outer flange 2 are connected, the positioning pin 31 is inserted into the positioning groove 42 by the elastic force of the spring 32, and at the same time, the positioning pin 31 abuts against the contact block 41. At this time, the positioning pin 31 limits and fixes the inner flange 1 and the outer flange 2, so that the inner flange 1 and the outer flange 2 cannot rotate relative to each other.

[0032] Furthermore, the inner surface of the outer flange 2 is provided with a connecting groove 7 and an annular groove 8, and the connecting groove 7 and the annular groove 8 are interconnected. Simultaneously, the connecting groove 7 is arranged parallel to the axis of the outer flange 2, and the annular groove 8 is arranged circumferentially along the inner circumference of the outer flange 2. The positioning groove 42 is connected to the annular groove 8. Figure 5 and Figure 6As shown, the positioning components 3 are symmetrically and evenly distributed inside the inner flange 1 about the axis of the inner flange 1. The connecting groove 7 and the quick-release components 4 are symmetrically and evenly distributed inside the outer flange 2 about the axis of the outer flange 2. The positioning components 3 are matched with the connecting groove 7, that is, the positioning components 3 can form a sliding connection with the outer flange 2 through the connecting groove 7 and the annular groove 8. When connecting the inner flange 1 and the outer flange 2, the positioning pin 31 is first aligned with the connecting groove 7, the inner flange 1 is pressed into the outer flange 2 and rotated. The positioning pin 31 moves directionally on the inner surface of the outer flange 2 through the connecting groove 7 and the annular groove 8. When the positioning pin 31 moves to the opening of the positioning groove 42, the positioning pin 31 is inserted into the positioning groove 42 by the elastic force of the spring 32, thereby completing the positioning and fixing of the inner flange 1 and the outer flange 2.

[0033] Furthermore, the positioning component 3 also includes a mounting groove 33 formed inside the inner flange 1, through which the positioning pin 31 forms a sliding connection with the inner flange 1, combined with... Figure 1 and Figure 2 As shown, the end of the spring 32 away from the positioning pin 31 is fixedly connected to the inside of the mounting groove 33, and the end of the positioning pin 31 facing the contact block 41 is provided with a first inclined structure. At the same time, since the contact block 41 is slidably connected to the inside of the outer flange 2 through the positioning groove 42, and the end of the contact block 41 facing the inside of the outer flange 2 is provided with a second inclined structure that cooperates with the positioning pin 31, when the positioning pin 31 is inserted into the inside of the outer flange 2 through the positioning groove 42, the first inclined structure on the positioning pin 31 abuts against the second inclined structure on the contact block 41, and the positioning pin 31 pushes the contact block 41 to move outward of the outer flange 2. Conversely, when it is necessary to separate the inner flange 1 and the outer flange 2, the contact block 41 is pressed down, so that the contact block 41 pushes the positioning pin 31 to move and compresses the spring 32, so that the positioning pin 31 can be removed from the positioning groove 42. At this time, the inner flange 1 and the outer flange 2 are rotated, so that the positioning pin 31 moves from the annular groove 8 to the connecting groove 7, so that the inner flange 1 and the outer flange 2 can be separated.

[0034] In addition, a first sealing ring 5 and a second sealing ring 6 are filled and installed between the inner flange 1 and the outer flange 2, combined with Figure 5 and Figure 6 As shown, the outer surfaces of the first sealing ring 5 and the second sealing ring 6 facing the inner flange 1 are both inclined, and the contact portion between the inner flange 1 and the first sealing ring 5 and the second sealing ring 6 is provided with a chamfer structure that matches the inclined surface. When the inner flange 1 is connected to the outer flange 2, the first sealing ring 5 and the second sealing ring 6 are under pressure between the inner flange 1 and the outer flange 2. At the same time, the first sealing ring 5 and the second sealing ring 6 generate radial extrusion force on the inner flange 1 and the outer flange 2. The first sealing ring 5 and the second sealing ring 6 are tightly fitted to the outer surface of the inner flange 1, thereby achieving a pre-sealing effect on the inner flange 1 and the outer flange 2.

[0035] Working principle: When using this snap-fit ​​pre-sealed quick-install flange structure, first align the positioning pin 31 with the connecting groove 7, press the inner flange 1 into the outer flange 2 and rotate it, so that the positioning pin 31 moves directionally on the inner surface of the outer flange 2 through the connecting groove 7 and the annular groove 8. When the positioning pin 31 moves to the opening of the positioning groove 42, the positioning pin 31 is inserted into the positioning groove 42 by the elastic force of the spring 32, thereby completing the positioning and fixing of the inner flange 1 and the outer flange 2. After the inner flange 1 and the outer flange 2 are connected, the inner flange 1 and the outer flange 2 cannot rotate relative to each other, effectively solving the problem of relative rotation that may occur between the flanges after locking, ensuring that the connection has higher reliability, stability and longer service life under complex working conditions. In addition, the outer surface of the inner flange 1 can be uniformly set with fixing blocks, and the outer surface of the outer flange 2 is provided with threaded holes corresponding to the connecting blocks, so that the inner flange 1 and the outer flange 2 can be further fixed by bolt structure.

[0036] Conversely, when it is necessary to separate the inner flange 1 and the outer flange 2, press down on the contact block 41 to push the positioning pin 31 to move and compress the spring 32, so that the positioning pin 31 can be removed from the positioning groove 42. At this time, rotate the inner flange 1 and the outer flange 2 to move the positioning pin 31 from the annular groove 8 to the connecting groove 7, so that the inner flange 1 and the outer flange 2 can be separated.

[0037] Second implementation method:

[0038] Please see Figure 7 and Figure 8 As shown, unlike the first embodiment, in this embodiment, a safety component 9 is movably disposed inside the outer flange 2, and a movable groove that cooperates with the safety component 9 is opened inside the outer flange 2. At the same time, the safety component 9 is disposed at the end of the contact block 41 facing the outside of the outer flange 2, and the safety component 9 includes a baffle 91 disposed perpendicular to the axis of the outer flange 2, and the baffle 91 can move circumferentially around the axis of the outer flange 2.

[0039] Working principle: When the inner flange 1 and the outer flange 2 are connected and in use, the safety component 9 can block the outer end of the contact block 41 to prevent accidental contact with the contact block 41 from causing the positioning pin 31 to be pressed open, thereby improving the connection reliability of the quick-install flange structure under complex working conditions. Furthermore, the safety component 9 also includes a lever 92 fixedly connected to the end face of the baffle 91 facing away from the contact block 41. By moving the lever 92, the baffle 91 can be moved in the movable groove to facilitate the removal of the safety component 9 and make it convenient to press the contact block 41.

[0040] The above are merely preferred embodiments of this utility model; they encompass all the protection scope of this utility model. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be covered within the protection scope of this utility model.

Claims

1. A snap-fit ​​pre-sealed quick-install flange structure, comprising an inner flange (1) and an outer flange (2), characterized in that: The outer surface of the inner flange (1) is fitted to the inner surface of the outer flange (2). The inner flange (1) is provided with a positioning component (3), and the positioning component (3) includes a positioning pin (31) movably connected inside the inner flange (1). The outer flange (2) is provided with a quick-release component (4), and the quick-release component (4) includes a contact block (41) movably connected inside the outer flange (2). A spring (32) is fixedly connected to one end of the positioning pin (31) away from the contact block (41). The inner surface of the outer flange (2) is provided with a connecting groove (7) and an annular groove (8), and the connecting groove (7) and the annular groove (8) are interconnected. The connecting groove (7) is arranged parallel to the axis of the outer flange (2), and the annular groove (8) is arranged circumferentially along the inner circumferential surface of the outer flange (2). The quick-release assembly (4) also includes a positioning groove (42) opened inside the outer flange (2) and connected to the annular groove (8). The positioning pin (31) can be inserted into the positioning groove (42) through the annular groove (8).

2. The snap-fit ​​pre-sealed quick-install flange structure according to claim 1, characterized in that: The positioning component (3) also includes a mounting groove (33) opened inside the inner flange (1), the positioning pin (31) is slidably connected to the inner flange (1) through the mounting groove (33), and the end of the spring (32) away from the positioning pin (31) is fixedly connected to the inside of the mounting groove (33).

3. The snap-fit ​​pre-sealed quick-install flange structure according to claim 2, characterized in that: The locating pin (31) has a first inclined surface structure at one end facing the contact block (41). The contact block (41) is slidably connected to the inside of the outer flange (2) through the locating groove (42). The contact block (41) has a second inclined surface structure at one end facing the inside of the outer flange (2) that cooperates with the locating pin (31).

4. The snap-fit ​​pre-sealed quick-install flange structure according to claim 3, characterized in that: The positioning components (3) are evenly distributed symmetrically about the inner flange (1) about the axis of the inner flange (1), and the connecting groove (7) and quick-release components (4) are evenly distributed symmetrically about the outer flange (2) about the axis of the outer flange (2).

5. The snap-fit ​​pre-sealed quick-install flange structure according to claim 4, characterized in that: The positioning component (3) is configured to cooperate with the connecting groove (7), and the positioning component (3) is connected to the outer flange (2) through the connecting groove (7) and the annular groove (8).

6. The snap-fit ​​pre-sealed quick-install flange structure according to claim 5, characterized in that: The outer flange (2) is equipped with a safety component (9) inside, and the outer flange (2) has an active groove that cooperates with the safety component (9) inside. The safety component (9) is located at the end of the contact block (41) facing the outer side of the outer flange (2).

7. The snap-fit ​​pre-sealed quick-install flange structure according to claim 6, characterized in that: The safety component (9) includes a baffle (91) arranged perpendicular to the axis of the outer flange (2), and the baffle (91) can move circumferentially around the axis of the outer flange (2). The safety component (9) also includes a lever (92) fixedly connected to the end face of the baffle (91) facing away from the contact block (41).

8. A snap-fit ​​pre-sealed quick-install flange structure according to claim 5 or 7, characterized in that: A first sealing ring (5) and a second sealing ring (6) are also provided between the inner flange (1) and the outer flange (2). The outer surfaces of the first sealing ring (5) and the second sealing ring (6) facing the inner flange (1) are both inclined, and the contact part between the inner flange (1) and the first sealing ring (5) and the second sealing ring (6) is provided with a chamfer structure that matches the inclined surface.

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