Flange with good sealing effect

Abstract

The utility model provides a flange with a good sealing effect, and relates to the related technical field of mechanical engineering. Comprising a flange plate, a sealing device and a fixing device, and a first sealing ring clamping groove is formed in the top end surface of the flange plate. According to the flange with the good sealing effect, through the arrangement of the flange plate, the first sealing ring clamping groove, the first flange sealing ring, the second sealing ring clamping groove and the second flange sealing ring, the traditional structure of the flange plate is changed, when the flange is installed, a flange gasket is installed stably and cannot fall off, meanwhile, the sealing performance of flange connection is enhanced, and the service life of the flange is prolonged. Through protection of the double flange pads, leakage of gas or liquid between pipelines can be well prevented, through arrangement of the buckles, the self-locking bolts, the self-locking nuts and the guide pipe connectors, the structure of the flange plate is more stable when the flange plate is assembled, looseness of the flange pieces cannot be caused even if the flange plate is used for a long time through the double fixing method, the air tightness is greatly improved, and the service life of the flange plate is prolonged. Meanwhile, the flange plate and the guide pipe are convenient to disassemble, and time and cost are saved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, and in particular to a flange with good sealing effect. Background Technology

[0002] Flanges originated in early 19th-century Britain. The Industrial Revolution brought many new mechanical devices and piping systems, creating a need for connecting different pipes or equipment. Early flanges consisted of two circular steel plates welded together and bolted to the pipe. With industrial development, flanges gradually became standardized products and their applications became increasingly widespread. Modern flanges are typically manufactured using casting or forging methods, with materials including steel, cast iron, and stainless steel. Furthermore, with continuous advancements in engineering technology, the structure and performance of flanges have been constantly improved and optimized. Currently, flanges have become an indispensable part of various pipe and equipment connections, widely used in petrochemical, shipbuilding, thermal power generation, and nuclear power plants.

[0003] However, existing flange devices often lack a fixing component between the flange plate and the flange gasket. The flange gasket is prone to slipping and falling off during installation. There is only one set of flange gaskets, and the material is uniform, resulting in poor sealing performance and easy leakage of gas or liquid. The flange plates are only fixed by bolts, which can easily cause them to loosen and fall off after long-term use. Most flange plates are welded to the conduit, making replacement difficult and costly. Utility Model Content

[0004] The purpose of this invention is to provide a flange with good sealing performance, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flange with good sealing effect, comprising a flange plate, a sealing device, and a fixing device. A first sealing ring groove is provided on the top surface of the flange plate. A first flange sealing ring is provided above the first sealing ring groove. A second sealing ring groove is provided inside the first sealing ring groove. A second flange sealing ring is provided above the second sealing ring groove. A buckle is provided on the outer side of the flange plate. Fixing devices are provided on both sides of the buckle. Self-locking bolts are provided on both sides of the buckle. Self-locking nuts are provided below the self-locking bolts. A conduit interface is provided at the bottom end of the flange plate.

[0006] Preferably, the second sealing ring groove and the first sealing ring groove are concentrically arranged, and the radius of the second sealing ring groove is smaller than the radius of the first sealing ring groove.

[0007] Preferably, the first flange sealing ring and the first sealing ring groove are sleeved together, and the material of the first sealing ring groove is polytetrafluoroethylene.

[0008] Preferably, the second sealing ring groove and the second flange sealing ring are sleeved together, and the material of the second sealing ring groove is neoprene rubber.

[0009] Preferably, the flange plate and the buckle are connected by a snap-fit ​​mechanism, and there are four sets of buckles, which are made of aluminum alloy.

[0010] Preferably, the self-locking bolt is threadedly connected to a flange plate, and the self-locking bolt is threadedly connected to a self-locking nut, and there are four sets of both the self-locking bolt and the self-locking nut.

[0011] Preferably, the flange plate and the conduit interface are welded together, the bottom end of the conduit interface is provided with a sleeve interface, and the conduit interface is made of stainless steel.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This flange, designed for superior sealing, alters the traditional flange plate structure by incorporating a flange plate, a first sealing ring groove, a first flange sealing ring, a second sealing ring groove, and a second flange sealing ring. This design ensures a secure and stable installation of the flange gasket, preventing it from falling off. Furthermore, it enhances the sealing performance of the flange connection. The double-gasket protection effectively prevents gas or liquid leakage between pipelines.

[0014] By using snap-fit, self-locking bolts, self-locking nuts, and conduit interfaces, the flange plate is structurally more stable during assembly. The dual fixing method will not cause the flange plate to loosen even after long-term use, which greatly enhances the airtightness. At the same time, the flange plate and conduit are easy to disassemble, saving time and costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front structure of the flange with good sealing effect according to this utility model;

[0016] Figure 2 This is a schematic diagram of the flange plate structure of this utility model;

[0017] Figure 3 This is a layered schematic diagram of the sealing device of this utility model;

[0018] Figure 4 This is an exploded view of the flange structure that provides a good sealing effect according to this utility model.

[0019] Labels in the diagram: 1. Flange plate; 2. Sealing device; 201. First sealing ring groove; 202. First flange sealing ring; 203. Second sealing ring groove; 204. Second flange sealing ring; 3. Snap fastener; 4. Fixing device; 401. Self-locking bolt; 402. Self-locking nut; 5. Conduit interface. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a flange with good sealing effect, including a flange plate 1, a sealing device 2, and a fixing device 4. The top surface of the flange plate 1 is provided with a first sealing ring groove 201, a first flange sealing ring 202 is provided above the first sealing ring groove 201, a second sealing ring groove 203 is provided inside the first sealing ring groove 201, a second flange sealing ring 204 is provided above the second sealing ring groove 203, a buckle 3 is provided on the outer side of the flange plate 1, a fixing device 4 is provided on both sides of the buckle 3, a self-locking bolt 401 is provided on both sides of the buckle 3, a self-locking nut 402 is provided below the self-locking bolt 401, and a conduit interface 5 is provided at the bottom end of the flange plate 1.

[0022] Furthermore, the second sealing ring groove 203 and the first sealing ring groove 201 are concentrically arranged, and the radius of the second sealing ring groove 203 is smaller than the radius of the first sealing ring groove 201, which facilitates fixing the position of the first flange sealing ring 202 and the second flange sealing ring 204, and will not fall off due to sliding during installation.

[0023] Furthermore, the first flange sealing ring 202 and the first sealing ring groove 201 are sleeved together. The first sealing ring groove 201 is made of polytetrafluoroethylene (PTFE), forming a second layer of sealing isolation between the sealing surfaces of the flange plate 1. It also has a good shock absorption and buffering effect, which can absorb the impact force generated when liquid or gas flows through the pipeline, reduce the vibration and noise of various components. At the same time, PTFE has good gas barrier properties, preventing gas leakage from the connected pipeline.

[0024] Furthermore, the second sealing ring groove 203 and the second flange sealing ring 204 are connected by a sleeve. The material of the second sealing ring groove 203 is neoprene rubber, which forms a seal between the sealing surfaces of the flange plate 1 to prevent media leakage or external impurities from entering the pipeline. Neoprene rubber has excellent water-proof performance to prevent liquid leakage from the connected pipeline.

[0025] Furthermore, the flange plate 1 and the clip 3 are connected by a snap-fit ​​mechanism. There are four sets of clips 3, which are made of aluminum alloy. This strengthens the stability between the two flange plates 1, ensuring a tight fit. The loosening of the self-locking bolt 401 will not cause the pipe joint to loosen, thus enhancing the sealing performance.

[0026] Furthermore, the self-locking bolt 401 is threadedly connected to the flange plate 1, and the self-locking bolt 401 is threadedly connected to the self-locking nut 402. There are four sets of self-locking bolts 401 and self-locking nuts 402. The self-locking bolts 401 and self-locking nuts 402 fix the two flange plates 1 together, which plays a role in connection and sealing. At the same time, the self-locking bolts 401 and self-locking nuts 402 are usually specially designed and surface treated to increase friction and prevent loosening or rotation. When the self-locking nut 402 is subjected to vibration or vibration force, the self-locking nut 402 will increase the friction, making it more tightly locked on the self-locking bolt 401 and preventing it from loosening.

[0027] Furthermore, the flange plate 1 and the conduit interface 5 are welded together. A sleeve is provided at the bottom of the conduit interface 5. The conduit interface 5 is made of stainless steel. The sleeve at the conduit interface 5 is used to connect and combine with the conduit, making the conduit easy to disassemble and assemble, saving time and labor costs, and enhancing the sealing performance.

[0028] Working principle: First, connect the conduit interface 5 below one flange plate 1 to the connecting pipe. Then, connect the conduit interface 5 below the other flange plate 1 to the connecting pipe in the same way. Place the second flange sealing ring 204 in the second sealing ring groove 203 and the first flange sealing ring 202 in the first sealing ring groove 201. Press the two flange plates 1 together and squeeze them together. Pass the self-locking bolt 401 through the hole on the surface of the flange plate 1 and fix it with the self-locking nut 402. Snap the buckle 3 onto the two flange plates 1. This completes the use of a flange with good sealing effect.

[0029] 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 with good sealing effect, comprising a flange plate (1), a sealing device (2), and a fixing device (4), characterized in that: The flange plate (1) has a first sealing ring groove (201) on its top surface, a first flange sealing ring (202) above the first sealing ring groove (201), a second sealing ring groove (203) inside the first sealing ring groove (201), a second flange sealing ring (204) above the second sealing ring groove (203), a buckle (3) on the outer side of the flange plate (1), a fixing device (4) on both sides of the buckle (3), a self-locking bolt (401) on both sides of the buckle (3), a self-locking nut (402) below the self-locking bolt (401), and a conduit interface (5) at the bottom end of the flange plate (1).

2. The flange with good sealing effect according to claim 1, characterized in that, The second sealing ring groove (203) and the first sealing ring groove (201) are concentrically arranged, and the radius of the second sealing ring groove (203) is smaller than the radius of the first sealing ring groove (201).

3. The flange with good sealing effect according to claim 1, characterized in that, The first flange sealing ring (202) and the first sealing ring groove (201) are connected by a sleeve, and the material of the first sealing ring groove (201) is polytetrafluoroethylene.

4. The flange with good sealing effect according to claim 1, characterized in that, The second sealing ring groove (203) and the second flange sealing ring (204) are connected by a sleeve, and the material of the second sealing ring groove (203) is neoprene rubber.

5. A flange with good sealing effect according to claim 1, characterized in that, The flange plate (1) and the buckle (3) are connected by a snap-fit ​​mechanism. There are four sets of buckles (3), and the buckle (3) is made of aluminum alloy.

6. The flange with good sealing effect according to claim 1, characterized in that, The self-locking bolt (401) is threadedly connected to a flange plate (1), and the self-locking bolt (401) is threadedly connected to a self-locking nut (402). There are four sets of both the self-locking bolt (401) and the self-locking nut (402).

7. A flange with good sealing effect according to claim 6, characterized in that, The flange plate (1) and the conduit interface (5) are welded together. The bottom end of the conduit interface (5) is provided with a sleeve interface. The conduit interface (5) is made of stainless steel.

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