Flange with high sealing performance

Abstract

The utility model discloses a flange with high sealing performance, which relates to the technical field of flanges and comprises a first flange and a second flange, the first flange is arranged on one side of the second flange, the outer wall of the first flange and the outer wall of the second flange are fixedly connected with connecting plates, and threaded connecting holes are formed in the outer wall of the first flange and the outer wall of the second flange in a penetrating manner. After the first flange is connected with the second flange, the inserting plate of the first flange is inserted into the connecting inserting groove to be matched with connection of the fourth sealing gasket and the second sealing gasket, so that the connecting position between the first flange and the second flange has high sealing performance, and the sealing performance of the first flange and the second flange is improved. And through the pressing contact connection between the third sealing gasket and the first sealing gasket, the external part of the connection part of the plug board and the connection slot is further sealed and protected, so that the connection sealing performance of the plug board is further improved, and the leakage of internal circulating liquid is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of flanges, in particular to a high-sealing flange. Background Art

[0002] Flange is a mechanical connector, usually used to connect pipes, valves and other equipment. It usually consists of two circular flanges with a sealing gasket in the middle and fixed by bolts and nuts. The selection of flanges needs to take into account factors such as pipeline pressure, temperature, and medium to ensure a safe and reliable connection. Common flange types include welded flanges, threaded flanges, and wafer flanges.

[0003] However, in the prior art, during long-term use, the flange joints are susceptible to external or internal corrosion and damage, resulting in leakage, and the sealing is poor, which can easily cause the pipeline to be corroded and damaged by the leaking liquid, thereby affecting the normal use of the pipeline and shortening its service life. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the flange in the prior art is susceptible to external or internal corrosion and damage during long-term use, resulting in leakage at its connection, poor sealing, and easily causing the pipeline to be corroded and damaged by the leaking liquid, thereby affecting the normal use of the pipeline and having a short service life, and to propose a high-sealing flange.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-sealing flange, including a first flange and a second flange, the first flange is arranged on one side of the second flange, the outer walls of the first flange and the second flange are fixedly connected with a connecting plate, the outer walls of the first flange and the second flange are penetrated with threaded connecting holes, a connecting slot is opened on the outer wall of one side of the second flange, the inner wall of the connecting slot is fixedly connected with a second sealing gasket, a first sealing gasket is arranged on one side of the connecting slot, the first sealing gasket is fixedly connected to the outer wall of the second flange, a plug-in plate is fixedly connected to the outer wall of the plug-in plate, a fourth sealing gasket is fixedly connected to the outer wall of the plug-in plate, a third sealing gasket is arranged on one side of the fourth sealing gasket, and the third sealing gasket is fixedly connected to the outer wall of the first flange.

[0006] Preferably, a first inner sealing ring is provided on one side of the first sealing gasket, and the first inner sealing ring is fixedly connected to the outer wall of the second flange.

[0007] Preferably, a first outer sealing ring is provided on one side of the first inner sealing ring, and the first outer sealing ring is fixedly connected to the outer wall of the second flange.

[0008] Preferably, a second inner sealing ring is provided on one side of the third sealing gasket, and the second inner sealing ring is fixedly connected to the outer wall of the first flange.

[0009] Preferably, a second outer sealing ring is provided on one side of the second inner sealing ring, and the second outer sealing ring is fixedly connected to the outer wall of the first flange.

[0010] Compared with the prior art, the advantages and positive effects of the utility model are:

[0011] 1. In the present invention, after the first flange is connected to the second flange, the plug-in plate of the first flange is inserted into the connection slot, and the fourth sealing gasket and the second sealing gasket are connected to make the connection between the first flange and the second flange have a strong sealing performance, and the third sealing gasket is pressed and connected to the first sealing gasket to further seal and protect the outside of the connection between the plug-in plate and the connection slot, further improving the connection sealing performance of the present invention and effectively blocking the leakage of the internal circulating liquid.

[0012] 2. In the present invention, the first inner sealing ring and the second inner sealing ring are alternately pressed together, and the first outer sealing ring and the second outer sealing ring are alternately pressed together, so that after the first flange and the second flange are connected, the connection points on both sides of the threaded connection hole are sealed and blocked, thereby further improving the overall sealing performance of the present invention. By utilizing the cavities in the first outer sealing ring, the first inner sealing ring, the second outer sealing ring and the second inner sealing ring, the cavities have a certain elasticity after being extruded and deformed, so that when the present invention becomes loose to a certain extent, it can quickly rebound to fill the gap and maintain sufficient sealing performance, thereby improving the service life of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional structural schematic diagram of a high-sealing flange is proposed for the utility model;

[0014] Figure 2 A schematic diagram of the internal structure of a high-sealing flange is provided for the utility model;

[0015] Figure 3 The utility model proposes a high sealing flange Figure 2 A magnified view of the structure at center;

[0016] Figure 4 The utility model provides a first flange structure schematic diagram of a high sealing flange.

[0017] Legend: 1. First flange; 2. Second flange; 3. Threaded connection hole; 4. Connection plate; 5. First outer sealing ring; 6. First inner sealing ring; 7. First sealing gasket; 8. Connection slot; 9. Second sealing gasket; 10. Insert plate; 11. Second outer sealing ring; 12. Second inner sealing ring; 13. Third sealing gasket; 14. Fourth sealing gasket. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Embodiment 1

[0021] like Figure 1-4 As shown, the utility model provides a high-sealing flange, including a first flange 1 and a second flange 2, the first flange 1 is arranged on one side of the second flange 2, the outer walls of the first flange 1 and the second flange 2 are fixedly connected with a connecting plate 4, the outer walls of the first flange 1 and the second flange 2 are penetrated with a threaded connecting hole 3, a connecting slot 8 is opened on the outer wall of one side of the second flange 2, the inner wall of the connecting slot 8 is fixedly connected with a second sealing gasket 9, a first sealing gasket 7 is arranged on one side of the connecting slot 8, the first sealing gasket 7 is fixedly connected to the outer wall of the second flange 2, a plug-in plate 10 is fixedly connected to the outer wall of the plug-in plate 10, a fourth sealing gasket 14 is fixedly connected, a third sealing gasket 13 is arranged on one side of the fourth sealing gasket 14, and the third sealing gasket 13 is fixedly connected to the outer wall of the first flange 1.

[0022] The specific settings and functions of this embodiment are described in detail below. The first flange 1 and the second flange 2 are welded to the pipeline through the connecting plate 4, and the first flange 1 and the second flange 2 are connected and fixed by bolts through the threaded connecting holes 3. After the first flange 1 and the second flange 2 are connected, the plug plate 10 of the first flange 1 is inserted into the connecting slot 8, and the fourth sealing gasket 14 and the second sealing gasket 9 are connected to make the connection between the first flange 1 and the second flange 2 have a strong sealing property, and the third sealing gasket 13 is pressed and connected with the first sealing gasket 7 to further seal and protect the outside of the connection between the plug plate 10 and the connecting slot 8, thereby further improving the connection sealing property of the utility model and effectively blocking the leakage of the internal circulating liquid.

[0023] Embodiment 2

[0024] like Figure 1-4As shown, a first inner sealing ring 6 is provided on one side of the first sealing gasket 7, and the first inner sealing ring 6 is fixedly connected to the outer wall of the second flange 2; a first outer sealing ring 5 is provided on one side of the first inner sealing ring 6, and the first outer sealing ring 5 is fixedly connected to the outer wall of the second flange 2; a second inner sealing ring 12 is provided on one side of the third sealing gasket 13, and the second inner sealing ring 12 is fixedly connected to the outer wall of the first flange 1; a second outer sealing ring 11 is provided on one side of the second inner sealing ring 12, and the second outer sealing ring 11 is fixedly connected to the outer wall of the first flange 1.

[0025] The effect achieved by the entire embodiment is that, through the staggered pressure contact between the first inner sealing ring 6 and the second inner sealing ring 12 and the staggered pressure contact between the first outer sealing ring 5 and the second outer sealing ring 11, the connection points on both sides of the threaded connection hole 3 are sealed and blocked after the first flange 1 and the second flange 2 are connected, thereby effectively avoiding the erosion of external liquid and further improving the overall sealing performance of the utility model. By utilizing the cavities in the first outer sealing ring 5, the first inner sealing ring 6, the second outer sealing ring 11 and the second inner sealing ring 12, they have a certain elasticity after being extruded and deformed, so that the utility model can quickly rebound to fill the gap and maintain sufficient sealing performance when a certain looseness occurs, thereby improving the service life of the utility model.

[0026] The method of use and working principle of the device: when in use, the first flange 1 and the second flange 2 are welded to the pipeline through the connecting plate 4, and the first flange 1 and the second flange 2 are connected and fixed by bolts through the threaded connecting hole 3. After the first flange 1 and the second flange 2 are connected, the plug plate 10 of the first flange 1 is inserted into the connecting slot 8, and the fourth sealing gasket 14 and the second sealing gasket 9 are connected, so that the connection between the first flange 1 and the second flange 2 has a strong sealing performance, and the third sealing gasket 13 is connected with the first sealing gasket 7 by pressure contact, and the outside of the connection between the plug plate 10 and the connecting slot 8 is further sealed and protected. Through the pressure contact of the first inner sealing ring 6 and the second inner sealing ring 12 and the pressure contact of the first outer sealing ring 5 and the second outer sealing ring 11, the connection between the first flange 1 and the second flange 2 is sealed and blocked at both sides of the threaded connecting hole 3, thereby effectively avoiding the erosion of external liquid.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A high sealing flange, characterized in that: The invention comprises a first flange (1) and a second flange (2), wherein the first flange (1) is arranged on one side of the second flange (2), the outer walls of the first flange (1) and the second flange (2) are both fixedly connected with a connecting plate (4), the outer walls of the first flange (1) and the second flange (2) are both penetrated with a threaded connecting hole (3), a connecting slot (8) is opened on one side of the outer wall of the second flange (2), the inner wall of the connecting slot (8) is fixedly connected with a second sealing gasket (9), a first sealing gasket (7) is arranged on one side of the connecting slot (8), the first sealing gasket (7) is fixedly connected to the outer wall of the second flange (2), a plug plate (10) is fixedly connected to the outer wall of the plug plate (10), a fourth sealing gasket (14) is fixedly connected to the outer wall of the plug plate (10), a third sealing gasket (13) is arranged on one side of the fourth sealing gasket (14), and the third sealing gasket (13) is fixedly connected to the outer wall of the first flange (1).

2. A high sealing flange according to claim 1, characterized in that: A first inner sealing ring (6) is provided on one side of the first sealing gasket (7), and the first inner sealing ring (6) is fixedly connected to the outer wall of the second flange (2).

3. A high sealing flange according to claim 2, characterized in that: A first outer sealing ring (5) is provided on one side of the first inner sealing ring (6), and the first outer sealing ring (5) is fixedly connected to the outer wall of the second flange (2).

4. The high sealing flange according to claim 1, characterized in that: A second inner sealing ring (12) is provided on one side of the third sealing gasket (13), and the second inner sealing ring (12) is fixedly connected to the outer wall of the first flange (1).

5. The high sealing flange according to claim 4, characterized in that: A second outer sealing ring (11) is provided on one side of the second inner sealing ring (12), and the second outer sealing ring (11) is fixedly connected to the outer wall of the first flange (1).

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