Split type long neck flange

Abstract

The utility model relates to the technical field of flanges, in particular to a split type long-neck flange which comprises a flange plate, a plurality of bolt holes are formed in the surface of the flange plate, an assembling plate is connected to the surface of the flange plate in an inserted mode, an extension neck is integrally formed on one side of the assembling plate, and a screw is connected to one side of the flange plate in a screwed mode. A screw penetrates through the flange plate and then is screwed on the surface of the splicing plate; a limiting strip is fixed on the other side of the flange plate; the split type long neck flange has the advantages that the flange plate and the splicing plate are designed in a split mode, so that the size of the flange can be adjusted according to actual requirements, universality and adaptability of the flange are improved, and cost is reduced; and the splicing plate is fixed on the flange plate through the screw, so that the stable connection of the flange is realized. And meanwhile, due to the design of the limiting strips, the accuracy of inserting connection of the splicing plates is guaranteed, and the firmness of the flange plate welded to the pipeline is further improved.

Description

Technical Field

[0001] The utility model relates to the field of flanges, in particular to a split long-neck flange. Background Art

[0002] In industrial production, flanges are often used for sealing and connection at pipe joints. Traditional flanges are mostly one-piece designs. Once the size is not suitable or needs to be adjusted, the entire flange needs to be replaced, which not only increases costs but also reduces work efficiency.

[0003] In addition, the sealing and stability of traditional flanges also face certain challenges during installation. Therefore, designing a flange that is easy to adjust, has good sealing and high stability has become an urgent need in the industrial field. Utility Model Content

[0004] The purpose of the utility model is to provide a split long-neck flange to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a split long-neck flange, including a flange plate, a plurality of bolt holes are opened on the surface of the flange plate, an assembling plate is inserted into the surface of the flange plate, an extended neck is integrally formed on one side of the assembling plate, screws are threaded on one side of the flange plate, the screws penetrate the flange plate and are threaded on the surface of the assembling plate, and a limiting strip is fixed on the other side of the flange plate.

[0006] Preferably, an assembly groove is opened on the other side of the flange, the assembly groove is an annular groove, the inner ring diameter of the assembly groove is equal to the inner ring diameter of the flange, the assembly plate is an annular plate structure, the extended neck is a truncated cone tube, and the assembly plate is inserted into the assembly groove.

[0007] Preferably, a rubber ring is fixed to the outer ring surface of the assembling groove, and the rubber ring is clamped between the assembling plate and the assembling groove to generate elastic deformation.

[0008] Preferably, a rubber gasket is fixed to the side of the assembly plate away from the flange, the rubber gasket is a circular ring plate with an "L"-shaped cross section, and the outer diameter of the rubber gasket is larger than the outer diameter of the assembly groove.

[0009] Preferably, a reserved groove is provided on one side of the flange, the reserved groove is a "convex" shaped groove, the inner ring diameter of the reserved groove is larger than the inner ring diameter of the flange, a plurality of through holes are provided on the surface of the reserved groove, and a screw groove is provided on the surface of the assembly plate, the screw groove and the through holes correspond one to one, and the screws pass through the through holes and are screwed into the screw grooves.

[0010] Preferably, a rubber sealing piece is fixed on the outer ring surface at the notch of the reserved groove, the rubber sealing piece is an annular plate structure, and the inner ring opening of the rubber sealing piece is not connected to the inner ring opening of the reserved groove.

[0011] Preferably, the limit strip is a U-shaped arc piece, and a plurality of limit strips are provided, and the plurality of limit strips are distributed with the inner ring opening of the flange as the central axis.

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

[0013] The split long-neck flange proposed in the utility model adopts a split design of the flange plate and the assembly plate, so that the size of the flange can be adjusted according to actual needs, which improves the versatility and adaptability of the flange and reduces the cost; the assembly plate is fixed to the flange plate by screws to achieve a stable connection of the flange. At the same time, the design of the limit strip not only ensures the accuracy of the assembly plate plug-in, but also increases the firmness of the flange plate welded on the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the flange and extended connection structure of the utility model;

[0016] Figure 3 This is a side view of the structure of the utility model;

[0017] Figure 4 for Figure 3 Structural cross-section view at AA in the middle;

[0018] Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle;

[0019] Figure 6 This is a schematic diagram of the flange structure of the utility model.

[0020] In the figure: flange 1, assembly groove 2, assembly plate 3, extension neck 4, rubber gasket 5, rubber ring 6,

[0021] Reserved groove 7, through hole 8, screw groove 9, screw 10, rubber sealing piece 11, limit strip 12, bolt hole 13. DETAILED DESCRIPTION

[0022] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] See also Figure 1-Figure 3 The utility model provides a technical solution: a split long-neck flange, including a flange 1, a plurality of bolt holes 13 are opened on the surface of the flange 1, an assembling plate 3 is inserted on the surface of the flange 1, an extension neck 4 is integrally formed on one side of the assembling plate 3, a screw 10 is screwed on one side of the flange 1, the screw 10 penetrates the flange 1 and is screwed on the surface of the assembling plate 3, and a limiting strip 12 is fixed on the other side of the flange 1.

[0025] Embodiment 2

[0026] See attached Figures 4 to 6 As shown, on the basis of Example 1, in order to realize the assembly of the extension neck 4 on the flange 1, an assembly groove 2 is opened on the other side of the flange 1, the assembly groove 2 is an annular groove, the inner ring diameter of the assembly groove 2 is equal to the inner ring diameter of the flange 1, the assembly plate 3 is an annular plate structure, the extension neck 4 is a truncated cone tube, and the assembly plate 3 is inserted into the assembly groove 2; a rubber ring 6 is fixed on the outer ring surface of the assembly groove 2, and the rubber ring 6 is clamped between the assembly plate 3 and the assembly groove 2 to produce elastic deformation; a rubber gasket 5 is fixed on the side of the assembly plate 3 away from the flange 1, and the rubber gasket 5 is a circular ring plate with an "L"-shaped cross-section, and the outer diameter of the rubber gasket 5 is larger than the outer diameter of the assembly groove 2.

[0027] Push the assembling plate 3 into the assembling groove 2. At this time, the rubber ring 6 is clamped between the assembling groove 2 and the assembling plate 3 to prevent the assembling plate 3 from falling off from the assembling groove 2 at will. At this time, the rubber gasket 5 covers the notch of the assembling groove 2, which not only realizes the sealing of the assembling groove 2, but also after the extended neck 4 is inserted into the pipe, the rubber gasket 5 is clamped between the pipe and the flange 1 to play the role of a sealing gasket.

[0028] A reserved groove 7 is provided on one side of the flange 1. The reserved groove 7 is a convex groove. The inner ring diameter of the reserved groove 7 is larger than the inner ring diameter of the flange 1. A plurality of through holes 8 are provided on the surface of the reserved groove 7. A screw groove 9 is provided on the surface of the assembly plate 3. The screw groove 9 corresponds to the through holes 8 one by one. The screws 10 penetrate the through holes 8 and are screwed into the screw groove 9. A rubber sealing piece 11 is fixed on the outer ring surface at the notch of the reserved groove 7. The rubber sealing piece 11 is an annular plate structure, and the inner ring mouth of the rubber sealing piece 11 is not connected to the inner ring mouth of the reserved groove 7.

[0029] When installing the screw 10, it is necessary to fold the rubber sealing sheet 11 outward from the inner ring mouth of the rubber sealing sheet 11 and open it. When the reserved groove 7 is exposed, pass the screw 10 through the through hole 8 and screw it into the screw groove 9, so as to fix the assembly plate 3 on the flange 1, and then fold the rubber sealing sheet 11 back to cover the reserved groove 7.

[0030] Embodiment 3

[0031] On the basis of Example 2, in order to strengthen the welding of the flange 1 on the pipeline, the limit strip 12 is a "U"-shaped arc piece, and a plurality of limit strips 12 are provided, and the plurality of limit strips 12 are distributed with the inner ring opening of the flange 1 as the central axis; the reason for installing the limit strip 12 is not only to facilitate the extension of the neck 4 when rubbing the pipeline, the limit strip 12 is buckled on the outside of the pipeline to avoid the extension neck 4 from being skewed during insertion, and when the flange 1 is welded to the pipeline, the limit strip 12 is welded along the outer contour of the limit strip 12 and the groove body of the limit strip 12, and the limit strip 12 is welded to the outer wall of the pipeline, so as to strengthen the firmness of the flange 1 installed at the end of the pipeline.

[0032] When in use, push the assembling plate 3 into the assembling groove 2. At this time, the rubber ring 6 is clamped between the assembling groove 2 and the assembling plate 3 to prevent the assembling plate 3 from falling off from the assembling groove 2 at will. At this time, the rubber gasket 5 covers the notch of the assembling groove 2, which not only realizes the sealing of the assembling groove 2, but also after the extended neck 4 is inserted into the pipeline, the rubber gasket 5 is clamped between the pipeline and the flange 1 to play the role of a sealing gasket; when installing the screw 10, the rubber sealing sheet 11 needs to be folded outward from the inner ring mouth of the rubber sealing sheet 11 and opened. When the reserved groove 7 is exposed, the screw 10 passes through the through hole 8 and is screwed in the screw groove 9, so that the assembly plate 3 is fixed on the flange 1, and the rubber sealing piece 11 is turned back to cover the reserved groove 7; the installation of the limit strip 12 is not only convenient for the extension neck 4 to rub the pipeline, the limit strip 12 is buckled on the outside of the pipeline to avoid the extension neck 4 from being skewed when plugged in, and when the flange 1 is welded to the pipeline, the limit strip 12 is welded along the outer contour of the limit strip 12 and the groove body of the limit strip 12, and the limit strip 12 is welded to the outer wall of the pipeline, so as to strengthen the firmness of the flange 1 installed at the end of the pipeline.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A split long-neck flange, comprising a flange plate (1), a surface of the flange plate (1) being provided with a plurality of bolt holes (13), characterized in that: An assembling plate (3) is inserted into the surface of the flange (1), an extension neck (4) is integrally formed on one side of the assembling plate (3), a screw (10) is screwed onto one side of the flange (1), the screw (10) penetrates the flange (1) and is screwed onto the surface of the assembling plate (3), and a limiting strip (12) is fixed to the other side of the flange (1).

2. A split long neck flange according to claim 1, characterized in that: The other side of the flange (1) is provided with an assembling groove (2), which is an annular groove, and the inner ring diameter of the assembling groove (2) is equal to the inner ring diameter of the flange (1). The assembling plate (3) is an annular plate structure, and the extended neck (4) is a truncated cone-shaped tube. The assembling plate (3) is plugged into the assembling groove (2).

3. A split long neck flange according to claim 2, characterized in that: A rubber ring (6) is fixed to the outer ring surface of the assembly groove (2), and the rubber ring (6) is clamped between the assembly plate (3) and the assembly groove (2) to generate elastic deformation.

4. The split long neck flange according to claim 1, characterized in that: A rubber gasket (5) is fixed to the side of the assembly plate (3) away from the flange (1); the rubber gasket (5) is an annular plate with an "L"-shaped cross section; the outer diameter of the rubber gasket (5) is greater than the outer diameter of the assembly groove (2).

5. The split long neck flange according to claim 1, characterized in that: A reserved groove (7) is provided on one side of the flange (1), the reserved groove (7) is a convex groove, the inner ring diameter of the reserved groove (7) is larger than the inner ring diameter of the flange (1), a plurality of through holes (8) are provided on the surface of the reserved groove (7), a screw connection groove (9) is provided on the surface of the assembly plate (3), the screw connection groove (9) and the through holes (8) correspond one to one, and the screws (10) penetrate the through holes (8) and are screwed into the screw connection grooves (9).

6. The split long neck flange according to claim 5, characterized in that: A rubber sealing piece (11) is fixed on the outer ring surface of the notch of the reserved groove (7), the rubber sealing piece (11) is an annular plate structure, and the inner ring opening of the rubber sealing piece (11) is not connected to the inner ring opening of the reserved groove (7).

7. The split long neck flange according to claim 1, characterized in that: The limiting strip (12) is in the form of a U-shaped circular arc piece. A plurality of limiting strips (12) are provided, and the plurality of limiting strips (12) are distributed with the inner ring opening of the flange (1) as the central axis.

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