Flange with multi-stage sealing mechanism

Abstract

The utility model relates to the technical field of pipeline connection, and discloses a flange with a multi-stage sealing mechanism, which comprises flange plates, connecting cylinders are arranged on the right sides of the flange plates, another flange plate is arranged on the right sides of the connecting cylinders, connecting pipes are fixedly connected with the middle parts of the flange plates, convex surfaces are fixedly connected with the middle parts of the opposite sides of the two flange plates, and the convex surfaces are fixedly connected with the flange plates. Sealing assemblies are arranged on the left side and the right side of the connecting cylinder and used for fully sealing the flange, and a connecting assembly is arranged on the outer side of the middle of the flange plate and used for connecting the flange. According to the utility model, the leakage-proof gasket is pushed to slide into the leakage-proof groove, then the sealing ring is placed in the sealing groove of the connecting cylinder, the convex surfaces of the flange plates are aligned with the concave surfaces, the flange plates are pushed to drive the convex surfaces to slide into the concave surfaces to extrude the leakage-proof gasket, the bolt is pushed to connect the two flange plates and the connecting cylinder, and the nut is rotated to fix the bolt. The flange can conduct multi-stage sealing on a pipeline, and the sealing performance and tightness of the flange are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection, in particular to a flange with a multi-stage sealing mechanism. Background Art

[0002] Flanges, also known as flanges or flanges, are components that connect pipes to each other and valves, and are connected to the ends of pipes. Flanges are generally used in pairs, with corresponding mounting holes set up in a pair. Bolts and other fasteners pass through these holes to connect pipes. They are widely used in the chemical, oil and gas, nuclear energy, and other fields.

[0003] In the prior art, the flange is connected to the flange body through a detachable sealing connection between the cover ring and the flange body, which enables convenient disassembly of the flange connection, thereby making the flange more practical. However, it is unable to perform multi-level sealing on the pipeline, resulting in general sealing and tightness of the flange. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a flange with a multi-stage sealing mechanism, aiming to improve the problem that the flange in the prior art cannot perform multi-stage sealing on the pipeline, resulting in poor sealing and tightness of the flange.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a flange with a multi-stage sealing mechanism, including a flange plate, a connecting tube is provided on the right side of the flange plate, another flange plate is provided on the right side of the connecting tube, a connecting pipe is fixedly connected to the middle of the flange plate, a convex surface is fixedly connected to the middle of the opposite sides of the two flange plates, sealing components are provided on both sides of the connecting tube for fully sealing the flange, and a connecting component is provided on the outer side of the middle of the flange plate for connecting the flange.

[0006] As a further description of the above technical solution:

[0007] The sealing assembly includes a concave surface, which is arranged on the left and right sides of the connecting tube. A leak-proof groove is opened inside the concave surface, and a leak-proof gasket is arranged inside the leak-proof groove. A sealing groove is opened on the outside of the flange plate opposite to the connecting tube, and a sealing ring is arranged inside the sealing groove.

[0008] As a further description of the above technical solution:

[0009] The connecting assembly includes mounting holes, which are evenly arranged on the outside of the middle part. Bolts are slidably connected inside the mounting holes, and nuts are threadedly connected to the outsides of the bolts.

[0010] As a further description of the above technical solution:

[0011] The flange and the connecting tube are both made of stainless steel, the sealing ring is made of fluororubber, and the leak-proof gasket is made of polytetrafluoroethylene.

[0012] As a further description of the above technical solution:

[0013] The connecting pipe passes through the connecting cylinder.

[0014] As a further description of the above technical solution:

[0015] The bolt passes through the connecting tube, and the bolt and the nut are both made of nickel-chromium alloy.

[0016] As a further description of the above technical solution:

[0017] The convex surface is slidably connected inside the concave surface.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, the leak-proof gasket is pushed to slide into the leak-proof groove, and then the sealing ring is placed in the sealing groove of the connecting tube. Then, the convex surface of the flange is aligned with the concave surface, and the flange is pushed to drive the convex surface to slide into the concave surface to squeeze the leak-proof gasket. Finally, the bolts are pushed to connect the two flanges and the connecting tube, and the nuts are turned to fix the bolts. This realizes that the flange can perform multi-stage sealing on the pipeline, thereby improving the sealing and tightness of the flange.

[0020] 2. In the present invention, the corrosion resistance and high temperature resistance of the flange and the connecting tube are improved by stainless steel, the high temperature resistance and chemical corrosion resistance of the sealing ring are improved by fluororubber, and the chemical tolerance and high temperature resistance of the leak-proof gasket are improved by polytetrafluoroethylene, thereby improving the performance of the flange, extending the service life and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of a flange with a multi-stage sealing mechanism proposed by the present invention;

[0022] Figure 2 This is an expanded view of a flange with a multi-stage sealing mechanism proposed by the utility model;

[0023] Figure 3 for Figure 2 A in the enlarged view.

[0024] Legend:

[0025] 1. Flange; 2. Connecting tube; 3. Mounting hole; 4. Convex surface; 5. Concave surface; 6. Leak-proof groove; 7. Leak-proof gasket; 8. Sealing groove; 9. Sealing ring; 10. Connecting pipe; 11. Bolt; 12. Nut. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Reference Figure 1-Figure 3 , the utility model provides an embodiment: 1. A flange with a multi-stage sealing mechanism, including a flange plate 1, a connecting tube 2 is provided on the right side of the flange plate 1, and another flange plate 1 is provided on the right side of the connecting tube 2, a connecting pipe 10 is fixedly connected to the middle of the flange plate 1, a convex surface 4 is fixedly connected to the middle of the opposite side of the two flange plates 1, and a sealing component is provided on the left and right sides of the connecting tube 2 for fully sealing the flange, the sealing component includes a concave surface 5, the concave surface 5 is provided on the left and right sides of the connecting tube 2, a leak-proof groove 6 is opened inside the concave surface 5, a leak-proof gasket 7 is provided inside the leak-proof groove 6, a sealing groove 8 is opened on the outside of the flange plate 1 on the opposite side of the connecting tube 2, and a sealing ring 9 is provided inside the sealing groove 8, the flange plate 1 and the connecting tube 2 are both made of stainless steel to improve corrosion resistance and high temperature resistance, the sealing ring 9 is made of fluororubber to improve high temperature resistance and chemical corrosion resistance, the leak-proof gasket 7 is made of polytetrafluoroethylene to improve chemical tolerance and high temperature resistance, the connecting tube 10 passes through the connecting tube 2, and the convex surface 4 is slidably connected to the inside of the concave surface 5.

[0028] First, carefully push the leak-proof gasket 7 to slide it into the leak-proof groove 6. The leak-proof gasket 7 is a key component designed to prevent liquid or gas leakage. It is crucial to ensure that it is fully in place. This process requires ensuring that the leak-proof gasket 7 is flat and not squeezed or deformed to avoid affecting the sealing effect. Place the sealing ring 9 into the sealing groove 8 of the connecting tube 2. The sealing ring 9 is mainly used to fill the gap in the connecting tube 2 to further enhance the sealing. When placing it, make sure that the sealing ring 9 is completely in contact with the sealing groove 8 to avoid deviation or partial unsealing. Align the convex surface 4 of the flange 1 with the concave surface 5 on the flange 1. This docking work requires very precise requirements to ensure that the flange 1 can be completely To match, the convex surface 4 and the concave surface 5 must be accurately aligned so that the subsequent operations can proceed smoothly. Gently push the flange 1 to drive the convex surface 4 to slide into the concave surface 5. During this process, the convex surface 4 of the flange 1 will gradually enter the concave surface 5 and exert pressure on the leak-proof gasket 7. At this time, the convex surface 4 will squeeze the leak-proof gasket 7 so that it is tightly fixed in the leak-proof groove 6. After the push is completed, check whether the leak-proof gasket 7 is evenly compressed into the leak-proof groove 6 to ensure that the convex surface 4 and the concave surface 5 of the flange 1 are completely consistent and that the leak-proof gasket 7 has no warping or offset. Confirm that the sealing ring 9 is also tightly embedded in the sealing groove 8 of the connecting tube 2 to ensure the integrity of the entire sealing system.

[0029] Reference Figure 1-Figure 3 A connecting component is provided on the outer side of the middle part of the flange 1 for connecting the flange. The connecting component includes mounting holes 3, which are evenly arranged on the outer side of the middle part. Bolts 11 are slidably connected inside the mounting holes 3, and nuts 12 are threadedly connected to the outer sides of the bolts 11. The bolts 11 pass through the connecting tube 2. Both the bolts 11 and the nuts 12 are made of nickel-chromium alloy to ensure that the bolts 11 and the nuts 12 are resistant to high temperature and chemical corrosion.

[0030] Align the bolt 11 with the opening of the connecting pipe 10 and push the bolt 11 to slide inside the mounting hole 3. The purpose of the bolt 11 is to tightly connect the two flanges 1 and the connecting tube 2. Make sure that the bolt 11 passes through the mounting hole 3 smoothly and accurately aligns with the mounting holes of the flange 1 and the connecting tube 2 to achieve a stable connection. When pushing the bolt 11, make sure that the holes of the two flanges 1 and the connecting tube 2 are aligned. The bolt 11 passes through the flange 1 and the connecting tube 2 to form a firm connection. At this time, the bolt 11 should completely pass through all the parts to be connected and expose enough length for subsequent fixation. Once the bolt 1 1 is correctly positioned. Next, you need to turn the nut 12, screw the nut 12 onto the thread of the bolt 11, and gradually tighten it. By rotating the nut 12, it will move along the thread of the bolt 11 and apply pressure to the bolt 11. During the rotation of the nut 12, the nut 12 will tighten the bolt 11 and firmly fix it in the mounting hole 3. The tightening of the nut 12 ensures that the connection between the flange 1 and the connecting tube 2 is stable and not easy to loosen. When tightening, you should use appropriate tools, such as a wrench or other torque tools, to ensure that the nut 12 reaches the recommended tightening torque to prevent connection problems caused by insufficient or excessive tightening.

[0031] Working principle: When the flange needs to be installed, push the leak-proof gasket 7 to make it slide into the leak-proof groove 6, then place the sealing ring 9 in the sealing groove 8 of the connecting tube 2, and then align the convex surface 4 of the flange 1 with the concave surface 5, push the flange 1 so that the flange 1 drives the convex surface 4 to slide into the concave surface 5 to squeeze the leak-proof gasket 7, and finally push the bolt 11 so that the bolt 11 slides inside the mounting hole 3 to connect the two flanges 1 and the connecting tube 2, and turn the nut 12 so that the nut 12 fixes the bolt 11, thereby realizing that the flange can perform multi-stage sealing on the pipeline, thereby improving the sealing and tightness of the flange.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flange with a multi-stage sealing mechanism, comprising a flange plate (1), characterized in that: A connecting tube (2) is provided on the right side of the flange (1), and another flange (1) is provided on the right side of the connecting tube (2). A connecting pipe (10) is fixedly connected to the middle of the flange (1), and a convex surface (4) is fixedly connected to the middle of the opposite side of the two flanges (1). Sealing components are provided on both the left and right sides of the connecting tube (2) for fully sealing the flange. A connecting component is provided on the outer side of the middle of the flange (1) for connecting the flange. The sealing component includes a concave surface (5), which is provided on the left and right sides of the connecting tube (2). A leak-proof groove (6) is provided inside the concave surface (5), and a leak-proof gasket (7) is provided inside the leak-proof groove (6). A sealing groove (8) is provided on the outside of the side opposite to the connecting tube (2), and a sealing ring (9) is provided inside the sealing groove (8).

2. The flange with a multi-stage sealing mechanism according to claim 1, characterized in that: The connection assembly comprises a mounting hole (3), the mounting hole (3) being evenly arranged on the outside of the middle portion, a bolt (11) being slidably connected inside the mounting hole (3), and a nut (12) being threadedly connected outside the bolt (11).

3. The flange with a multi-stage sealing mechanism according to claim 1, characterized in that: The flange (1) and the connecting tube (2) are both made of stainless steel, the sealing ring (9) is made of fluororubber, and the leak-proof gasket (7) is made of polytetrafluoroethylene.

4. The flange with a multi-stage sealing mechanism according to claim 1, characterized in that: The connecting pipe (10) passes through the connecting cylinder (2).

5. The flange with a multi-stage sealing mechanism according to claim 2, characterized in that: The bolt (11) passes through the connecting tube (2), and the bolt (11) and the nut (12) are both made of nickel-chromium alloy.

6. The flange with a multi-stage sealing mechanism according to claim 1, characterized in that: The convex surface (4) is slidably connected inside the concave surface (5).

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