A sealing element for a water supply pipeline and a pipeline inspection opening structure using the same

Abstract

A kind of sealing element for water supply pipeline and the pipeline inspection port structure using it, the sealing element includes plug post and the connecting disc of outer end thereof, the plug post includes sealing sleeve (11) and the support column (21) inserted inside it, and the outer end of the sealing sleeve (11) has opening, the connecting disc includes support disc (22) being located at the outer end of support column (21), and sealing disc (12) extending along the opening of sealing sleeve (11) and being attached to the inner side of support disc (22) periphery, and the sealing disc (12) and support disc (22) are also provided with mounting hole corresponding to opening.This utility model, through the joint action of plug post and connecting disc, forms "double sealing inside and outside", relative to prior art, cover plate and flange are only sealed by bolt pressure sealing pad to realize sealing, sealing effect is enhanced, and by the structure design, the sealing life of sealing disc is far greater than the sealing life at sealing sleeve, relatively, the overall sealing life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of pipeline sealing technology, specifically to a sealing component for water supply pipelines and a pipeline inspection port structure using the same. Background Technology

[0002] During the construction of drainage risers, inspection ports need to be installed on the risers so that operators can inspect and repair the pipes if blockages occur. Figure 5 The pipe inspection port includes a short pipe 200 with openings at both ends. One end of the pipe is laterally connected to the drainage riser 100, and the outer edge of the other end is provided with a connecting flange 201. A detachable cover plate 300 is bolted to the connecting flange 201, and a sealing gasket 400 is provided between the cover plate 300 and the connecting flange 201. The sealing gasket 400 and the cover plate 300 can cover the entire opening of the short pipe 200. In use, by tightening the bolts, the cover plate 300 presses the sealing gasket 400 against the connecting flange 201 to seal the inspection port. However, this sealing effect is not good, and there is a gap between the bolt position and the sealing gasket 400, which can easily cause water leakage. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model provides a sealing element for water supply pipelines and a pipeline inspection port structure using the same.

[0004] The technical solution of this utility model is as follows:

[0005] A sealing element for a water supply pipeline includes a plug and a connecting plate at its outer end. The plug includes a sealing sleeve and a support column inserted inside it, and the outer end of the sealing sleeve has an opening. The connecting plate includes a support plate located at the outer end of the support column, and a sealing plate extending outward from the opening of the sealing sleeve and fitting against the inner side of the support plate. The sealing plate and the support plate are also provided with corresponding mounting holes.

[0006] The aforementioned sealing sleeve and sealing disc are used for sealing, while the support column and support disc are used to support the sealing sleeve and sealing disc. In use, the insert is inserted into the inside of the pipe, and the connecting disc is connected to the flange structure at the pipe inspection port. At the same time, the insert (support column + sealing sleeve) and the connecting disc (support disc + sealing disc) work together to form a "double seal inside and outside". Compared with the existing technology, where the cover plate and flange are only sealed by tightening the sealing gasket with bolts, the sealing effect is enhanced. Furthermore, through this structural design, the service life of the connecting disc is much longer than that of the insert, which also extends the sealing life.

[0007] To further improve sealing performance, the outer ring of the sealing sleeve is also provided with multiple sealing rings along its length to form multiple lines of defense and further improve sealing performance.

[0008] Furthermore, an annular groove is provided on the outer ring of the support column near the support plate, and a sealing lip that mates with the annular groove is provided on the inner side of the sealing plate.

[0009] As described above, the sealing component for water supply pipelines has a U-shaped axial section with the support column facing outwards, and a ring-shaped structure extending outwards from the opening of the support column. This reduces the weight of the support column itself while maintaining structural strength, thereby lowering material costs.

[0010] To improve structural strength, the support column and support plate are manufactured as a single piece.

[0011] For ease of processing, the support column and support plate are made of metal to provide rigid support (the metal material includes, but is not limited to, ductile iron), while the sealing sleeve and sealing plate are made of rubber to ensure elastic sealing (the rubber material includes, but is not limited to, EPDM rubber), balancing strength and sealing performance. The sealing sleeve, sealing ring and sealing plate are manufactured as a single piece.

[0012] Furthermore, the opening of the blind hole in the support column is located on the outer surface of the support plate, and the support column and support plate can be directly stamped from metal sheet.

[0013] As described above, a sealing element for a water supply pipe has a chamfered structure at the end of the sealing sleeve facing away from the sealing disc, so that the insertion post can be smoothly inserted into the short pipe.

[0014] This utility model also provides a pipe inspection port structure, including a riser and a short pipe with openings at both ends, wherein one end of the short pipe is laterally connected to the riser and the other end is provided with a connecting flange, and a sealing element for a water supply pipe as described above, wherein the insert is inserted into the short pipe and is interference-fitted with the inner ring of the short pipe, and the connecting plate is connected to the connecting flange by bolts, and the inner side of the connecting plate is in contact with the outer side of the connecting flange.

[0015] This utility model discloses a sealing component for water supply pipelines and a pipeline inspection port structure using the same. By designing a multi-stage sealing structure (insert interference fit, sealing disc compression, dynamic compensation of sealing ring and sealing lip) and a metal-rubber composite material design, it upgrades the traditional planar sealing gasket to a radial and axial coordinated sealing. The insert interference fit with the inner wall of the short pipe eliminates the circumferential gap of the bolts, the sealing disc deforms under pressure to fill the unevenness of the flange surface, and the integrally formed elastic sealing ring and sealing lip adapt to pipeline vibration or thermal expansion and contraction through deformation, blocking the leakage path at the source and significantly improving the sealing reliability of the inspection port. Attached Figure Description

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the assembly structure of a pipe inspection port structure in this embodiment (hidden riser);

[0018] Figure 2 This is a schematic diagram of the sealing structure in this embodiment;

[0019] Figure 3 for Figure 2 The front view;

[0020] Figure 4 for Figure 3 Schematic diagram of the AA-direction section;

[0021] Figure 5 This is existing technology;

[0022] The components represented by the various reference numerals in the figure are: 100, riser; 200, short pipe; 201, connecting flange; 300, cover plate; 400, gasket;

[0023] 1. Sealing structure; 11. Sealing sleeve; 12. Sealing disc; 121. Sealing lip; 13. Sealing ring; 2. Fixing structure; 21. Support column; 211. Annular groove; 22. Support disc. Detailed Implementation

[0024] Combination Figures 1-5 This embodiment provides a pipe inspection port structure, including a water supply pipe seal, a riser 100 and a short pipe 200 with openings at both ends. One end of the short pipe 200 is laterally connected to the riser 100, and the other end is provided with a connecting flange 201. The water supply pipe seal is used to seal the end of the short pipe 200 where the connecting flange 201 is provided, so as to prevent the leakage of blockage water in the short pipe 200 when the riser 100 is blocked.

[0025] Combination Figures 2-4 A sealing element for a water supply pipeline includes a plug and a connecting plate at its outer end. The plug includes a sealing sleeve 11 and a support column 21 inserted inside it. The outer end of the sealing sleeve 11 has an opening. The connecting plate includes a support plate 22 located at the outer end of the support column 21, and a sealing plate 12 extending outward from the opening of the sealing sleeve 11 and fitting against the inner side of the support plate 22. The sealing plate 12 and the support plate 22 are also provided with corresponding mounting holes.

[0026] The aforementioned sealing sleeve 11 and sealing disc 12 form a sealing structure 1 for sealing the short pipe 200. The support column 21 and support disc 22 form a support structure for supporting the sealing sleeve 11 and sealing disc 12. The support column 21 and support disc 22 are made of metal to provide rigid support (the metal material includes, but is not limited to, ductile iron). The sealing sleeve 11 and sealing disc 12 are made of rubber to ensure elastic sealing (the rubber material includes, but is not limited to, EPDM rubber), balancing strength and sealing performance.

[0027] In use, the insert is inserted into the short pipe 200, and the connecting plate is connected to the connecting flange 201 by bolts. The inner side of the connecting plate fits against the outer side of the connecting flange 201, and the insert is interference-fitted with the inner ring of the short pipe 200. This sealing element forms a "double seal inside and outside" through the combined action of the insert (supporting column 21 + sealing sleeve 11) and the connecting plate (supporting plate 22 + sealing plate 12). Compared with the existing technology, where the cover plate 300 and the flange are sealed only by tightening the sealing gasket 400 with bolts, this enhances the sealing effect. Furthermore, through this structural design, the service life of the connecting plate is much longer than that of the insert, which also extends the sealing life.

[0028] Combination Figure 2 and Figure 3 The outer ring of the sealing sleeve 11 is also provided with multiple sealing rings 13 along its length to form multiple lines of defense, further improving the sealing performance. The sealing sleeve 11, sealing rings 13 and sealing disc 12 are manufactured as a single piece.

[0029] The end of the sealing sleeve 11 facing away from the sealing disc 12 has a chamfered structure to facilitate the insertion of the insert into the short tube 200.

[0030] Combination Figure 1 The outer ring of the support column 21 near the support plate 22 is provided with an annular groove 211, and the inner side of the sealing plate 12 is provided with a sealing lip 121 that cooperates with the annular groove 211, which further improves the sealing performance. The shape of the sealing lip 121 can be V-shaped or rectangular. In this embodiment, a rectangle is preferred, and the end has a chamfer design.

[0031] The axial cross section of the support column 21 is a U-shape with the opening facing outwards, and the support plate 22 is a ring structure that extends outwards from the opening of the support column 21. While maintaining structural strength, the weight of the support column 22 itself is reduced, thus reducing material costs. In order to improve structural strength, the support column 21 and the support plate 22 are manufactured as a single piece.

[0032] For ease of processing, the support column 21 and the support plate 22 can be directly stamped from metal sheets.

[0033] This utility model discloses a sealing component for water supply pipelines and a pipeline inspection port structure using the same. By designing a multi-stage sealing structure 1 (insert column interference fit, support structure compression, sealing ring 13 and sealing lip 121 dynamic compensation) and a metal-rubber composite material sealing component design, the traditional flat sealing gasket 400 is upgraded to radial and axial coordinated sealing. The insert column and the inner wall of the short pipe 200 interference fit eliminate the circumferential gap of the bolts. The sealing disc 12 is deformed under pressure to fill the unevenness of the flange surface. The integrally formed elastic sealing ring 13 and sealing lip 121 adapt to pipeline vibration or thermal expansion and contraction through deformation, blocking the leakage path from the source and significantly improving the sealing reliability of the inspection port.

Claims

1. A sealing element for water supply pipelines, characterized in that, Includes the insertion post and the connecting plate at its outer end; The insert includes a sealing sleeve (11) and a support column (21) inserted therein, and the outer end of the sealing sleeve (11) has an opening; The connecting plate includes a support plate (22) located at the outer end of the support column (21) and a sealing plate (12) extending outward from the opening of the sealing sleeve (11) and fitting against the inner side of the support plate (22). The sealing plate (12) and the support plate (22) are also provided with corresponding mounting holes.

2. A sealing element for a water supply pipeline as described in claim 1, characterized in that, The outer ring of the sealing sleeve (11) is also provided with multiple sealing rings (13) along its length.

3. A sealing element for a water supply pipeline as described in claim 1, characterized in that, The outer ring of the support column (21) near the support plate (22) is provided with an annular groove (211), and the inner side of the sealing plate (12) is provided with a sealing lip (121) that cooperates with the annular groove (211).

4. A sealing element for a water supply pipeline as described in claim 1, characterized in that, The axial cross section of the support column (21) is U-shaped with the opening facing outwards, and the support disk (22) is an annular structure extending outwards along the opening of the support column (21).

5. A sealing element for a water supply pipeline as described in claim 4, characterized in that, The support column (21) and the support plate (22) are integrally manufactured.

6. A sealing element for a water supply pipeline as described in claim 1, characterized in that, The support column (21) and support plate (22) are made of metal, and the sealing sleeve (11) and sealing plate (12) are made of rubber.

7. A sealing element for a water supply pipeline as described in claim 2, characterized in that, The sealing sleeve (11), sealing ring (13) and sealing disc (12) are manufactured as a single unit.

8. A sealing element for a water supply pipeline as described in claim 1, characterized in that, The sealing sleeve (11) has a chamfered structure at the end opposite to the sealing disc (12).

9. A pipe inspection port structure, comprising a riser (100) and a short pipe (200) open at both ends, wherein one end of the short pipe (200) is laterally connected to the riser (100), and the other end is provided with a connecting flange (201), characterized in that, It also includes a sealing element for a water supply pipeline as described in any one of claims 1-8; The insert is inserted into the short tube (200) and is interference-fitted with the inner ring of the short tube (200); The connecting plate is bolted to the connecting flange (201), and the inner side of the connecting plate is in contact with the outer side of the connecting flange (201).

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