Flange sealing connection structure with quick disassembly function

Abstract

The utility model discloses a flange sealing connection structure with a quick dismounting function, which belongs to the technical field of flanges and comprises a pipeline, a flange plate is mounted at the end of the pipeline, a connecting hole penetrates through the center of the flange plate, fixing holes are uniformly formed in the circumferential surface of the flange plate, fixing bolts are inserted into the fixing holes, and the flange plate is connected with the connecting hole. A fixing nut is in threaded connection with the fixing bolt, a sealing piece is arranged on the side face of the flange plate and comprises a protruding pipe, an external thread, a connecting pipe, an internal thread, a center pipe and a sealing groove, the protruding pipe is fixed to the edge of the connecting hole, the external thread is arranged on the side wall of the protruding pipe, and the internal thread is arranged on the inner wall of one end of the connecting pipe; the connecting pipe is connected with the protruding pipe through thread fit of the external thread and the internal thread, the sealing grooves are formed in the two ends of the center pipe, the other end of the connecting pipe is located in the sealing grooves, and through the mode, quick disassembly is achieved, and operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of flange technology, specifically to a flange sealing connection structure with quick disassembly function. Background Technology

[0002] A flange is a structure used to connect pipes. A flange mainly consists of a flange plate, a gasket, fixing bolts, and fixing nuts. A flange connection involves welding one end of two pipes to the end of the flange plate. First, each pipe is fixed to one flange plate. Then, a gasket is placed between the two flange plates. Finally, the two flange plates are tightened with bolts to make them tightly connected. It is a detachable joint that uses a gasket to seal and prevent leakage.

[0003] However, in actual use, the flowing medium in the pipeline will continuously impact the connection, which will cause the fixing bolts to loosen, resulting in the displacement of the gasket and affecting the sealing effect. The flange connection needs to be inspected regularly. When displacement and leakage occur, it needs to be removed and the position of the gasket needs to be adjusted, which requires moving the pipeline, which is inconvenient.

[0004] Based on this, the present invention designs a flange sealing connection structure with quick disassembly function to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a flange sealing connection structure with quick disassembly function.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A flange sealing connection structure with quick disassembly function includes a pipe, a flange installed at the end of the pipe, a connecting hole penetrating the center of the flange, and fixing holes evenly distributed on the circumference of the flange. Fixing bolts are inserted into the fixing holes, and fixing nuts are threaded onto the fixing bolts. A sealing element is provided on the side of the flange. The sealing element includes a convex tube, an external thread, a connecting tube, an internal thread, a central tube, and a sealing groove. The convex tube is fixed to the edge of the connecting hole. The external thread is provided on the side wall of the convex tube, and the internal thread is provided on the inner wall of one end of the connecting tube. The connecting tube is connected to the convex tube through the threaded engagement of the external and internal threads. The sealing groove is provided at both ends of the central tube, and the other end of the connecting tube is located in the sealing groove.

[0008] Furthermore, the length of the external thread is equal to the length of the convex tube, and the length of the internal thread is equal to the length of the external thread.

[0009] Furthermore, the length of the sealing groove is greater than the length of the convex tube, the outer diameter of the sealing groove is equal to the outer diameter of the connecting tube, and the inner diameter of the sealing groove is equal to the inner diameter of the connecting tube.

[0010] Furthermore, a fastener is installed in the sealing groove, the fastener including a spring, a fastening ring plate, an inner annular groove and an inner sealing ring.

[0011] Furthermore, the spring is uniformly fixed to the end of the sealing groove, the fastening ring plate is fixed to the end of the spring, the inner annular groove is opened on the side edge of the fastening ring plate, and the inner sealing ring is installed in the inner annular groove.

[0012] Furthermore, the inner diameter of the fastening ring plate is smaller than the inner diameter of the connecting pipe, the inner diameter of the inner annular groove is smaller than the outer diameter of the connecting pipe, and the thickness of the inner sealing ring is greater than the depth of the inner annular groove.

[0013] Furthermore, the flange has an outer annular groove at the edge of the convex tube on its side, an outer sealing ring is installed in the outer annular groove, and a pressure ring is fixed at one end of the connecting pipe.

[0014] Furthermore, the thickness of the outer sealing ring is greater than the depth of the outer annular groove, and the outer diameter of the pressure ring is greater than the outer diameter of the outer annular groove. Beneficial effects

[0015] 1. By setting a sealing element, when maintenance is required, simply remove the fixing nut and fixing bolt, rotate the connecting pipe to separate it from the convex pipe, and the connecting pipe and the central pipe can be removed, achieving quick disassembly and facilitating operation;

[0016] 2. By setting up a spring, a fastening ring plate, an inner annular groove, and an inner sealing ring, the inner sealing ring is made to fit against the end of the connecting pipe under the elastic compression of the spring, further sealing the end of the connecting pipe located in the sealing groove; by setting up an outer annular groove, an outer sealing ring, and a pressure ring, the outer sealing ring is placed in the outer annular groove, and when the connecting pipe and the convex pipe are connected, the pressure ring presses and fixes the outer sealing ring, further sealing the connection position of the connecting pipe and the convex pipe. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a perspective view of the main structure of a flange sealing connection structure with quick disassembly function according to the present invention;

[0019] Figure 2 This utility model discloses a flange structure with a quick-disassembly function for a flange sealing connection. Figure 1 ;

[0020] Figure 3 This utility model discloses a flange structure with a quick-disassembly function for a flange sealing connection. Figure 2 ;

[0021] Figure 4 This is a perspective view of a connecting pipe structure with a flange sealing connection structure having a quick disassembly function according to the present invention;

[0022] Figure 5 This is a perspective view of the central tube structure of a flange sealing connection structure with quick disassembly function according to this utility model;

[0023] Figure 6 This is a perspective view of a fastener structure for a flange sealing connection structure with quick disassembly function according to the present invention.

[0024] The labels in the diagram represent:

[0025] 1. Pipe; 2. Flange; 3. Connecting hole; 4. Fixing hole; 5. Fixing bolt; 6. Fixing nut; 7. Raised tube; 8. External thread; 9. Connecting pipe; 10. Internal thread; 11. Center tube; 12. Sealing groove; 13. Spring; 14. Fastening ring plate; 15. Inner annular groove; 16. Inner sealing ring; 17. Outer annular groove; 18. Outer sealing ring; 19. Pressure ring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] The present invention will be further described below with reference to the embodiments.

[0028] In some embodiments, please refer to the accompanying drawings. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5A flange sealing connection structure with quick disassembly function includes a pipe 1, a flange 2 installed at the end of the pipe 1, a connecting hole 3 penetrating the center of the flange 2, fixing holes 4 evenly opened on the circumference of the flange 2, fixing bolts 5 inserted into the fixing holes 4, fixing nuts 6 threadedly connected to the fixing bolts 5, and a sealing element provided on the side of the flange 2. The sealing element includes a convex tube 7, an external thread 8, a connecting tube 9, an internal thread 10, a central tube 11, and a sealing groove 12. The convex tube 7 is fixed to the edge of the connecting hole 3, the external thread 8 is provided on the side wall of the convex tube 7, the internal thread 10 is provided on the inner wall of one end of the connecting tube 9, and the connecting tube 9 is connected to the convex tube 7 through the threaded engagement of the external thread 8 and the internal thread 10. The sealing groove 12 is provided at both ends of the central tube 11, and the other end of the connecting tube 9 is located in the sealing groove 12.

[0029] In this embodiment of the utility model, when in use, the flange 2 is fixed to the end of the pipe 1, one end of the connecting pipe 9 is inserted into the sealing groove 12, and the other end of the connecting pipe 9 is connected to the convex pipe 7 by the thread engagement of the external thread 8 and the internal thread 10, so as to realize the installation of the pipe 1, the flange 2 and the seal. Finally, the fixing bolt 5 is passed through the fixing hole 4 and the fixing nut 6 is used for fixing. When maintenance is required, the fixing nut 6 and the fixing bolt 5 are removed, the connecting pipe 9 is rotated to separate it from the convex pipe 7, and the connecting pipe 9 and the central pipe 11 can be removed to achieve quick disassembly.

[0030] In this embodiment of the utility model, by setting a sealing element, when maintenance is required, it is only necessary to remove the fixing nut 6 and fixing bolt 5, rotate the connecting pipe 9 to separate it from the convex pipe 7, and then remove the connecting pipe 9 and the central pipe 11 to achieve quick disassembly;

[0031] In one embodiment of this utility model, the length of the external thread 8 is equal to the length of the convex tube 7, and the length of the internal thread 10 is equal to the length of the external thread 8, which facilitates the installation and removal of the connecting tube 9 and the convex tube 7; the length of the sealing groove 12 is greater than the length of the convex tube 7, the outer diameter of the sealing groove 12 is equal to the outer diameter of the connecting tube 9, and the inner diameter of the sealing groove 12 is equal to the inner diameter of the connecting tube 9. During disassembly, rotating the connecting tube 9 allows it to enter the sealing groove 12, which facilitates separation from the convex tube 7.

[0032] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, fasteners are installed in the sealing groove 12. The fasteners include a spring 13, a fastening ring plate 14, an inner annular groove 15, and an inner sealing ring 16. The spring 13 is evenly fixed at the end of the sealing groove 12. The fastening ring plate 14 is fixed at the end of the spring 13. The inner diameter of the fastening ring plate 14 is smaller than the inner diameter of the connecting pipe 9. The inner annular groove 15 is opened on the side edge of the fastening ring plate 14. The inner diameter of the inner annular groove 15 is smaller than the outer diameter of the connecting pipe 9. The inner sealing ring 16 is installed in the inner annular groove 15. The thickness of the inner sealing ring 16 is greater than the depth of the inner annular groove 15. An outer annular groove 17 is opened on the side of the flange 2 at the edge of the convex pipe 7. An outer sealing ring 18 is installed in the outer annular groove 17. The thickness of the outer sealing ring 18 is greater than the depth of the outer annular groove 17. A pressure ring 19 is fixed at one end of the connecting pipe 9. The outer diameter of the pressure ring 19 is greater than the outer diameter of the outer annular groove 17.

[0033] In this embodiment of the utility model, when in use, the flange 2 is fixed to the end of the pipe 1 and connected to the pipe 1 through the connecting hole 3. Then, the outer sealing ring 18 is placed into the outer annular groove 17, and the inner sealing ring 16 is placed into the inner annular groove 15. One end of the connecting pipe 9 is inserted into the sealing groove 12. The other end of the connecting pipe 9 is connected to the convex pipe 7 by the thread engagement of the external thread 8 and the internal thread 10. With the cooperation of the pressure ring 19, the outer sealing ring 18 is pressed and fixed. Under the elastic compression of the spring 13, the outer sealing ring 18 is made to fit against the end of the connecting pipe 9, realizing the installation of the pipe 1, flange 2 and sealing element. Finally, the fixing bolt 5 is passed through the fixing hole 4 and fixed with the fixing nut 6. When maintenance is required, the fixing nut 6 and fixing bolt 5 are removed, the connecting pipe 9 is rotated to separate it from the convex pipe 7, and the connecting pipe 9 and the central pipe 11 can be removed to achieve quick disassembly.

[0034] In this embodiment of the utility model, by setting a spring 13, a fastening ring plate 14, an inner annular groove 15, and an inner sealing ring 16, the outer sealing ring 18 is made to fit against the end of the connecting pipe 9 under the elastic compression of the spring 13, further sealing the end of the connecting pipe 9 located in the sealing groove 12; by setting an outer annular groove 17, an outer sealing ring 18, and a pressure ring 19, the outer sealing ring 18 is placed in the outer annular groove 17, and when the connecting pipe 9 and the convex pipe 7 are connected, the pressure ring 19 presses and fixes the outer sealing ring 18, further sealing the connection position of the connecting pipe 9 and the convex pipe 7;

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A flange sealing connection structure with quick disassembly function, comprising a pipe (1), characterized in that: A flange (2) is installed at the end of the pipe (1). A connecting hole (3) is passed through the center of the flange (2). Fixing holes (4) are evenly opened on the circumference of the flange (2). Fixing bolts (5) are inserted into the fixing holes (4). Fixing nuts (6) are threaded onto the fixing bolts (5). A sealing element is provided on the side of the flange (2). The sealing element includes a convex tube (7), an external thread (8), a connecting tube (9), an internal thread (10), a central tube (11), and a sealing groove (12). The convex tube (7) is fixed to the edge of the connecting hole (3). The external thread (8) is provided on the side wall of the convex tube (7). The internal thread (10) is provided on the inner wall of one end of the connecting tube (9). The connecting tube (9) is connected to the convex tube (7) through the threaded engagement of the external thread (8) and the internal thread (10). The sealing groove (12) is provided at both ends of the central tube (11). The other end of the connecting tube (9) is located in the sealing groove (12).

2. The flange sealing connection structure with quick disassembly function according to claim 1, characterized in that, The length of the external thread (8) is equal to the length of the convex tube (7), and the length of the internal thread (10) is equal to the length of the external thread (8).

3. The flange sealing connection structure with quick dismounting function according to claim 2, characterized in that, The length of the sealing groove (12) is greater than the length of the convex tube (7), the outer diameter of the sealing groove (12) is equal to the outer diameter of the connecting tube (9), and the inner diameter of the sealing groove (12) is equal to the inner diameter of the connecting tube (9).

4. The flange sealing connection structure with quick disassembly function according to claim 3, characterized in that, Fasteners are installed in the sealing groove (12), including a spring (13), a fastening ring plate (14), an inner annular groove (15), and an inner sealing ring (16).

5. The flange sealing connection structure with quick disassembly function according to claim 4, characterized in that, The spring (13) is evenly fixed around the end of the sealing groove (12), the fastening ring plate (14) is fixed at the end of the spring (13), the inner annular groove (15) is opened on the side edge of the fastening ring plate (14), and the inner sealing ring (16) is installed in the inner annular groove (15).

6. The flange sealing connection structure with quick disassembly function according to claim 5, characterized in that, The inner diameter of the fastening ring plate (14) is smaller than the inner diameter of the connecting pipe (9), the inner diameter of the inner annular groove (15) is smaller than the outer diameter of the connecting pipe (9), and the thickness of the inner sealing ring (16) is greater than the depth of the inner annular groove (15).

7. The flange sealing connection structure with quick disassembly function according to claim 6, characterized in that, The flange (2) has an outer annular groove (17) on the side at the edge of the convex tube (7). An outer sealing ring (18) is installed in the outer annular groove (17). A pressure ring (19) is fixed at one end of the connecting tube (9).

8. The flange sealing connection structure with quick dismounting function according to claim 7, characterized in that, The thickness of the outer sealing ring (18) is greater than the depth of the outer annular groove (17), and the outer diameter of the pressure ring (19) is greater than the outer diameter of the outer annular groove (17).

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