Flange sealing and fastening connecting piece

Abstract

The utility model relates to the technical field of flanges, in particular to a flange sealing and fastening connecting piece which comprises an upper flange and a lower flange, a front protective sleeve capable of protecting and sealing the upper flange and the lower flange is sleeved on the outer wall of a flange plate of the upper flange and the outer wall of a flange plate of the lower flange, and rear protective sleeves are symmetrically arranged on the opposite face of the front protective sleeve. A flange gasket capable of sealing the joint of the upper flange and the lower flange is arranged between the upper flange and the lower flange, and eight evenly-distributed connecting holes are formed in flange plates of the upper flange and the lower flange. Through the arrangement of the front protective sleeve, the rear protective sleeve and the flange gasket, the sealing mode of the flange connecting piece is not single any more, the sealing performance is more stable, the protective sleeves can protect the internal flange from being easily corroded by the outside, the leakage phenomenon is greatly reduced, even if leakage occurs, the leakage can be blocked in the protective sleeves, and the service life of the flange connecting piece is prolonged. Pollution to the natural environment is greatly reduced, and the probability of safety accidents is greatly reduced.

Description

Technical Field

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

[0002] A flange connection is a mechanical connection consisting of a pair of flanges, a gasket, and bolts and nuts. It's commonly used to connect pipes, valves, pumps, and other equipment. It's achieved by connecting two flanges to their respective ports, securing them with bolts and nuts, and placing a gasket between them to ensure a tight seal. Flange connections offer advantages such as secure connection, easy disassembly, and reliable sealing, making them widely used in various fluid delivery systems across the industrial sector.

[0003] In modern industry, the safe and stable operation of pipeline systems is crucial. With the continuous development of industry, the requirements for pipeline connections are becoming increasingly stringent. Traditional flange sealing and fastening connectors have gradually exposed some problems during use. Currently, common flange connectors generally use a single sealing method, which is not stable in complex working environments. Flanges exposed to the outside world rust due to long-term corrosion and are prone to leakage. This not only wastes resources, but also may pollute the environment and even cause safety accidents. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of existing common flange connectors, which usually adopt a single sealing method and have unstable sealing performance when facing complex working environments and different media pressures. In particular, leakage is prone to occur under high temperature, high pressure and corrosive media working conditions. This not only wastes resources, but also may pollute the environment and even cause safety accidents. The purpose of this utility model is to provide a flange sealing fastening connector.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A flange sealing and fastening connector includes an upper flange and a lower flange. The outer walls of the flange plates of the upper flange and the lower flange are provided with a front protective sleeve that can protect and seal the upper flange and the lower flange. A rear protective sleeve is symmetrically arranged on the opposite side of the front protective sleeve. A flange gasket that can seal the connection between the upper flange and the lower flange is arranged between the upper flange and the lower flange. Eight evenly distributed connection holes are provided on the flange plates of the upper flange and the lower flange.

[0007] Preferably, the flange gasket is provided with evenly distributed mounting holes, and the positions and sizes of the mounting holes are adapted to those of the connecting holes.

[0008] Preferably, the front protective cover and the rear protective cover are configured as semicircular covers, and the inner walls of the front protective cover and the rear protective cover are fixedly connected with waterproof pads, which are tightly against the outer walls of the flanges of the upper flange and the lower flange.

[0009] Preferably, a sealing gasket is provided on the inner outer wall of the front protective sleeve that abuts against the outer walls of the upper flange and the lower flange, and a sealing gasket is also provided on the inner outer wall of the rear protective sleeve that abuts against the outer walls of the upper flange and the lower flange.

[0010] Preferably, the outer walls of the front protective cover and the rear protective cover are fixedly connected with symmetrically distributed connecting blocks, the connecting blocks are provided with symmetrically distributed circular holes, bolts are provided in the circular holes, and nuts are threadedly connected to the bolts.

[0011] Preferably, a locking bolt is provided on the connecting hole, a locking nut is threadedly connected to the locking bolt, and the locking bolt passes through the connecting holes on the upper flange and the lower flange and is connected to the locking nut.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] When the utility model is in use, the front protective cover, the rear protective cover, the flange gasket and the waterproof gasket and the sealing gasket arranged on the protective cover can make the sealing mode of the flange connection no longer single and the sealing performance more stable. The protective cover can protect the internal flange from being easily corroded by the outside world, so that the leakage phenomenon is greatly reduced. Even if leakage occurs, it can be blocked in the protective cover, which greatly reduces the pollution to the natural environment and greatly reduces the probability of causing safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of a flange sealing fastening connector proposed by the present invention;

[0015] Figure 2 This is a schematic diagram of a half-section three-dimensional structure of a flange sealing fastening connector proposed by the present invention;

[0016] Figure 3 This is a schematic diagram of the flange connection three-dimensional structure of a flange sealing fastening connector proposed by the present invention;

[0017] Figure 4 This is a schematic diagram of the three-dimensional structure of a rear protective sleeve of a flange sealing and fastening connector proposed by the present invention.

[0018] In the figure: 1. Upper flange; 2. Lower flange; 3. Front protective cover; 4. Rear protective cover; 5. Flange gasket; 6. Connecting hole; 7. Waterproof gasket; 8. Sealing gasket; 9. Connecting block; 10. Round hole; 11. Bolt; 12. Nut; 13. Locking bolt; 14. Locking nut. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] Reference Figures 1-4 A flange sealing and fastening connector includes an upper flange 1 and a lower flange 2. The outer walls of the flange plates of the upper flange 1 and the lower flange 2 are provided with a front protective cover 3 that can protect and seal the upper flange 1 and the lower flange 2. A rear protective cover 4 is symmetrically arranged on the opposite surface of the front protective cover 3. A flange gasket 5 that can seal the connection between the upper flange 1 and the lower flange 2 is arranged between the upper flange 1 and the lower flange 2. Eight evenly distributed connection holes 6 are provided on the flange plates of the upper flange 1 and the lower flange 2.

[0021] It should be noted that the upper flange 1 and the lower flange 2 are existing technologies, and the specific model specifications need to be selected and determined based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be repeated.

[0022] Furthermore, the flange gasket 5 is provided with evenly distributed mounting holes, and the positions and sizes of the mounting holes are adapted to those of the connecting holes 6 .

[0023] Among them, when installing the upper flange 1 and the lower flange 2, the locking bolt 13 passes through the connecting hole 6 and the mounting hole on the flange gasket 5 and is connected to the locking nut 14, firmly installing the flange gasket 5 between the upper flange 1 and the lower flange 2, so that the sealing between the upper flange 1 and the lower flange 2 is greatly enhanced.

[0024] Furthermore, the front protective cover 3 and the rear protective cover 4 are configured as semicircular covers, and the inner walls of the front protective cover 3 and the rear protective cover 4 are fixedly connected with a waterproof pad 7, which is tightly against the outer walls of the flanges of the upper flange 1 and the lower flange 2.

[0025] The waterproof gasket 7 has a certain degree of flexibility, so that when the front protective cover 3 and the rear protective cover 4 are connected, the waterproof gasket 7 can seal the gap between the upper flange 1 and the lower flange 2 to form a secondary seal.

[0026] Furthermore, a sealing gasket 8 is provided on the inner outer wall of the front protective cover 3 which abuts against the outer walls of the upper flange 1 and the lower flange 2 , and a sealing gasket 8 is also provided on the inner outer wall of the rear protective cover 4 which abuts against the outer walls of the upper flange 1 and the lower flange 2 .

[0027] Among them, the sealing gasket 8 on the front protective cover 3 and the sealing gasket 8 on the rear protective cover 4 are spliced together to form a complete sealing ring. When the protective cover is set on the flange, the sealing gasket 8 is tightly against the outer walls of the upper flange 1 and the lower flange 2, so that the accumulated water or other solutions that break through the waterproof gasket 7 will be retained in the protective cover to avoid polluting the external environment.

[0028] Furthermore, the outer walls of the front protective cover 3 and the rear protective cover 4 are fixedly connected with symmetrically distributed connecting blocks 9, and the connecting blocks 9 are provided with symmetrically distributed circular holes 10, and bolts 11 are provided in the circular holes 10, and nuts 12 are threadedly connected to the bolts 11.

[0029] The front protective cover 3 and the rear protective cover 4 can be connected together through the symmetrical connecting block 9, making disassembly and maintenance more convenient.

[0030] Furthermore, a locking bolt 13 is provided on the connection hole 6 , and a locking nut 14 is threadedly connected to the locking bolt 13 . The locking bolt 13 passes through the connection holes 6 on the upper flange 1 and the lower flange 2 and is connected to the locking nut 14 .

[0031] The width of the inner cavity of the front protective cover 3 and the rear protective cover 4 is greater than the length of the locking bolt 13 , so that the front protective cover 3 and the rear protective cover 4 can be smoothly sleeved on the outer walls of the upper flange 1 and the lower flange 2 .

[0032] Working principle: Before using the flange connector, first align the connecting holes 6 on the upper flange 1 and the lower flange 2 with each other, then insert the flange gasket 5 between the upper flange 1 and the lower flange 2, then insert the locking bolt 13 into the connecting hole 6 and pass through the flange gasket 5 to connect with the locking nut 14, then the front protective cover 3 and the rear protective cover 4 are relatively sleeved on the outer walls of the upper flange 1 and the lower flange 2, and then insert the bolt 11 into the circular hole 10, and after completely passing through the connecting blocks 9 on the front protective cover 3 and the rear protective cover 4, it can be connected with the nut 12, thus completing the installation. When disassembling, you only need to tighten the bolt 11 to disconnect it from the nut 12, so that the sealing method of the flange connector is no longer single, and the sealing is more stable. It can protect the internal flange from being easily corroded by the outside world, so that the leakage phenomenon is greatly reduced. Even if leakage occurs, it can be blocked in the protective cover, which greatly reduces the pollution to the natural environment and greatly reduces the probability of causing safety accidents.

[0033] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flange sealing fastening connector, comprising an upper flange (1) and a lower flange (2), characterized in that: A front protective sleeve (3) capable of protecting and sealing the upper flange (1) and the lower flange (2) is sleeved on the outer wall of the flange plate of the upper flange (1) and the lower flange (2); a rear protective sleeve (4) is symmetrically arranged on the opposite side of the front protective sleeve (3); a flange gasket (5) capable of sealing the connection between the upper flange (1) and the lower flange (2) is arranged between the upper flange (1) and the lower flange (2); and eight evenly distributed connection holes (6) are arranged on the flange plates of the upper flange (1) and the lower flange (2).

2. A flange sealing fastening connector according to claim 1, characterized in that: The flange gasket (5) is provided with evenly distributed mounting holes, and the positions and sizes of the mounting holes are adapted to those of the connecting holes (6).

3. The flange sealing fastening connector according to claim 1, characterized in that: The front protective cover (3) and the rear protective cover (4) are configured as semicircular covers, and the inner walls of the front protective cover (3) and the rear protective cover (4) are fixedly connected with a waterproof pad (7), and the waterproof pad (7) is tightly abutted against the outer walls of the flanges of the upper flange (1) and the lower flange (2).

4. A flange sealing fastening connector according to claim 1, characterized in that: The inner outer wall of the front protective sleeve (3) abutting against the outer walls of the upper flange (1) and the lower flange (2) is provided with a sealing gasket (8), and the inner outer wall of the rear protective sleeve (4) abutting against the outer walls of the upper flange (1) and the lower flange (2) is also provided with a sealing gasket (8).

5. A flange sealing fastening connector according to claim 4, characterized in that: The outer walls of the front protective cover (3) and the rear protective cover (4) are fixedly connected with symmetrically distributed connecting blocks (9), the connecting blocks (9) are provided with symmetrically distributed circular holes (10), the circular holes (10) are provided with bolts (11), and the bolts (11) are threadedly connected with nuts (12).

6. The flange sealing fastening connector according to claim 1, characterized in that: A locking bolt (13) is provided on the connection hole (6), a locking nut (14) is threadedly connected to the locking bolt (13), and the locking bolt (13) passes through the connection holes (6) on the upper flange (1) and the lower flange (2) and is connected to the locking nut (14).

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