A flange having a sealing groove

Abstract

The utility model relates to large -scale flange technical field discloses a flange with sealing groove, including large -scale flan, the large -scale flan outside wall middle part is welded with a plurality of positioning convex points in circle equidistance array, the large -scale flan sealing surface inside is provided with sealing groove, the sealing groove inboard wall is connected with the sealing ring matched with it, the sealing ring top fixedly connected with sealing sheet, sealing sheet outside wall is provided with a plurality of round holes in circle equidistance array and can with large -scale flan surface round hole matched, sealing sheet outer edge fixed mounting has the outer sleeve, the outer sleeve is in large -scale flan outside, the outer sleeve outboard wall other end corresponding place is provided with a plurality of positioning grooves in circle equidistance array, the utility model discloses a flange with sealing groove through a plurality of positioning convex points of outside wall, can cooperate with the outer sleeve that the L shape positioning groove is provided with in corresponding place, and the whole of outer sleeve, sealing ring and sealing sheet is convenient to install or dismount replacement.

Description

Technical Field

[0001] This utility model relates to the field of large flange technology, specifically a flange with a sealing groove. Background Technology

[0002] Large flanges refer to flanges that exceed the dimensions specified by relevant national departments, generally referring to flanges with a size of DN2000 or larger. These products are all welded and do not have threads. Threaded flanges are commonly used in sizes from DN15 to DN100. In the national flange standard GB / T9119-2010, the largest size in the pressure standard from 0.25MPa to 1.6MPa is DN2000, and in the pressure standard of 2.5MPa, the largest size is DN800. The production of such flanges requires the construction party to provide drawings. There are three production processes: forging, rolling, and splicing. For products with excessively large sizes, only rolling and splicing processes can be used.

[0003] Existing large flanges typically achieve a sealing effect by bonding a sealing ring inside the sealing groove. However, large flanges are bulky, and the pressure between flanges is high after direct connection, which can easily damage the sealing ring and make it inconvenient to replace it quickly. Utility Model Content

[0004] The purpose of this utility model is to provide a flange with a sealing groove. The flange with a sealing groove disclosed in this utility model can cooperate with an outer sleeve with an L-shaped positioning groove at the corresponding location through several positioning protrusions on the outer wall, so as to facilitate the installation or disassembly and replacement of the outer sleeve, sealing ring and sealing sheet as a whole, 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 a sealing groove, comprising a large flange, wherein a plurality of positioning protrusions are welded in a circumferentially equidistant array on the middle of the outer side wall of the large flange, a sealing groove is formed on the inner side of the sealing surface of the large flange, a matching sealing ring is connected to the inner side wall of the sealing groove, a sealing plate is fixedly connected to the top of the sealing ring, a plurality of circular holes are formed in a circumferentially equidistant array on the outer side wall of the sealing plate and can match the circular holes on the surface of the large flange, an outer sleeve is fixedly installed on the outer edge of the sealing plate, the outer sleeve is fitted over the large flange, and a plurality of positioning grooves are formed in a circumferentially equidistant array at the corresponding position on the other side of the outer side wall of the outer sleeve, the positioning grooves being L-shaped.

[0006] Preferably, the outer sleeve is made of metal.

[0007] Preferably, the outer sleeve is made of plastic.

[0008] Preferably, the sealing ring and sealing sheet are made of flexible rubber.

[0009] Preferably, the sealing ring and sealing sheet are made of flexible silicone material.

[0010] Preferably, a bolt is inserted into the circular hole of the large flange, and a washer and nut are installed at the end of the bolt.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model discloses a flange with a sealing groove. Through several positioning protrusions on the outer wall, it can cooperate with an outer sleeve with corresponding L-shaped positioning grooves. This facilitates the installation or disassembly and replacement of the outer sleeve, sealing ring, and sealing sheet as a whole. It solves the problem that existing large flanges usually achieve a sealing effect by bonding a sealing ring in the sealing groove. However, large flanges are large in size, and the pressure between the flanges is large after direct connection, which can easily damage the sealing ring and make it inconvenient to replace it quickly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 4 This is a schematic diagram of the overall structure of this utility model.

[0017] In the diagram: 1. Large flange; 2. Outer sleeve; 3. Positioning protrusion; 4. Positioning groove; 5. Bolt; 6. Gasket; 7. Nut; 8. Sealing groove; 9. Sealing ring; 10. Sealing plate; 11. Round hole. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-4The diagram shows a flange with a sealing groove, comprising a large flange 1. Several positioning protrusions 3 are welded in a circumferentially equidistant array on the middle of the outer wall of the large flange 1. A sealing groove 8 is formed on the inner side of the sealing surface of the large flange 1. A matching sealing ring 9 is connected to the inner wall of the sealing groove 8. A sealing plate 10 is fixedly connected to the top of the sealing ring 9. Several circular holes 11 are formed in a circumferentially equidistant array on the outer wall of the sealing plate 10 and can match the circular holes 11 on the surface of the large flange 1. An outer sleeve 2 is fixedly installed on the outer edge of the sealing plate 10, and the outer sleeve 2 is fitted over the large flange 1. Several positioning grooves 4 are formed in a circumferentially equidistant array at the corresponding location on the other end of the outer wall of the outer sleeve 2. The positioning grooves 4 are L-shaped. The flange with a sealing groove 8 disclosed in this utility model can cooperate with the outer sleeve 2, which has corresponding L-shaped positioning grooves 4, through the several positioning protrusions 3 on the outer wall, facilitating the installation or disassembly and replacement of the outer sleeve 2, sealing ring 9, and sealing plate 10 as a whole.

[0020] Furthermore, the outer sleeve 2 is made of metal, which has a long service life; furthermore, the outer sleeve 2 is made of plastic, which is convenient for positioning; furthermore, the sealing ring 9 and the sealing plate 10 are made of flexible rubber; furthermore, the sealing ring 9 and the sealing plate 10 are made of flexible silicone, which has a good sealing effect; furthermore, a bolt 5 is inserted into the round hole 11 of the large flange 1, and a gasket 6 and a nut 7 are installed at the end of the bolt 5, which facilitates the connection of the large flange 1.

[0021] In this design, during use, the flange with a sealing groove 8 disclosed in this utility model can cooperate with the outer sleeve 2, which has an L-shaped positioning groove 4 at the corresponding location, through several positioning protrusions 3 on the outer side wall. This facilitates the installation or disassembly and replacement of the outer sleeve 2, sealing ring 9, and sealing plate 10 as a whole. First, align the opening of the outer sleeve 2 with the large flange 1 and the sealing plate 10 with the sealing surface of the large flange 1. Then, slide the outer sleeve 2 downwards along the large flange 1 until the positioning protrusions 3 on the outside of the large flange 1 slide into the corresponding L-shaped positioning grooves 4 on the outside of the outer sleeve 2. Next, rotate the outer sleeve 2 to the right. Sleeve 2 allows the positioning protrusion 3 to slide into the horizontal groove of the L-shaped positioning groove 4, achieving the positioning effect. Then, adjust the flexible sealing ring 9 to insert it into the sealing groove 8, and adjust the sealing plate 10 so that the round hole 11 on its surface is aligned with the round hole 11 on the surface of the large flange 1. At this time, the sealing surfaces of the flange can be aligned with each other and connected by bolts 5, gaskets 6 and nuts 7. When it is necessary to disassemble and replace the outer sleeve 2, sealing ring 9 and sealing plate 10 as a whole, first remove the large flange 1 directly, then rotate the outer sleeve 2 counterclockwise and remove it upwards or downwards for easy and quick disassembly.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] 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 a sealing groove, characterized in that: The flange includes a large flange (1). The outer wall of the large flange (1) has several positioning protrusions (3) welded in a circumferentially equidistant array in the middle. The sealing surface of the large flange (1) has a sealing groove (8). The inner wall of the sealing groove (8) is connected to a matching sealing ring (9). The top of the sealing ring (9) is fixedly connected to a sealing plate (10). The outer wall of the sealing plate (10) has several circular holes (11) in a circumferentially equidistant array that can match the circular holes (11) on the surface of the large flange (1). An outer sleeve (2) is fixedly installed on the outer edge of the sealing plate (10). The outer sleeve (2) is fitted over the large flange (1). The other end of the outer wall of the outer sleeve (2) has several positioning grooves (4) in a circumferentially equidistant array. The positioning grooves (4) are L-shaped.

2. A flange with a sealing groove according to claim 1, characterized in that: The outer sleeve (2) is made of metal.

3. A flange with a sealing groove according to claim 1, characterized in that: The outer sleeve (2) is made of plastic.

4. A flange with a sealing groove according to claim 1, characterized in that: The sealing ring (9) and sealing sheet (10) are made of flexible rubber.

5. A flange with a sealing groove according to claim 1, characterized in that: The sealing ring (9) and sealing sheet (10) are made of flexible silicone material.

6. A flange with a sealing groove according to claim 1, characterized in that: A bolt (5) is inserted into the round hole (11) of the large flange (1), and a washer (6) and a nut (7) are installed at the end of the bolt (5).

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