Sealing connecting flange

Abstract

The utility model discloses a sealing connection flange which comprises a first flange plate and a second flange plate, the first flange plate and the second flange plate are respectively provided with a first ring groove and a second ring groove, a plurality of through grooves are formed between the first ring groove and the second ring groove, a first sealing ring is arranged in the first ring groove, and a second sealing ring is arranged in the second ring groove. And the connecting block between the first sealing ring and the second sealing ring is arranged in the through groove. The gap between the first flange plate and the second flange plate is sealed layer by layer through the first sealing ring and the second sealing ring, the sealing effect is improved, the first sealing ring and the second sealing ring are arranged to be of an integrated structure through the connecting block, and tight and reliable connection between the first flange plate and the second flange plate is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of flanges, and particularly relates to a sealing connection flange. Background Art

[0002] A flange is a part for connecting pipelines to each other, used for connecting pipe ends, mainly composed of a flange plate, a gasket and bolts. At present, the gaskets in two connected flanges are respectively arranged in the annular grooves at their respective central holes, and there is a gap between the gaskets. When the pressure in the pipeline is relatively high, the liquid is likely to leak along the gap between the gaskets, affecting the normal use of the flange. Summary of the Utility Model

[0003] In order to solve the above problems, the utility model provides a sealing connection flange.

[0004] The utility model is realized as follows: A sealing connection flange includes a first flange plate and a second flange plate. A plurality of first through holes are evenly opened on the first flange plate, and a plurality of second through holes are evenly opened on the second flange plate. The positions of the first through holes and the second through holes correspond to each other and have the same aperture. Bolts are arranged through the first through holes and the second through holes, and nuts are tightly sleeved on the bolts. The first flange plate and the second flange plate are reliably connected together through the bolts and the nuts. First annular grooves are opened at the adjacent central holes of the first flange plate and the second flange plate to accommodate a first sealing ring. Second annular grooves are opened on both the first flange plate and the second flange plate to accommodate a second sealing ring. The second annular groove and the first annular groove are located on the same side. A plurality of through grooves are evenly opened between the first annular groove and the second annular groove to accommodate connecting blocks. A first sealing ring is arranged in the first annular groove to seal the gap between the first flange plate and the second flange plate. A second sealing ring is arranged in the second annular groove to further seal the gap between the first flange plate and the second flange plate, improving the sealing effect. A plurality of connecting blocks are evenly and fixedly arranged between the first sealing ring and the second sealing ring, so that the first sealing ring, the connecting blocks and the second sealing ring form a whole, which is convenient for disassembly and assembly. The positions of the connecting blocks correspond to the through grooves and have the same width, ensuring that the connecting blocks fill the through grooves. The connecting blocks are arranged in the through grooves. The thickness of the first sealing ring is greater than the thickness between the two first annular grooves. The thickness of the connecting blocks is greater than the thickness between the two through grooves. The thickness of the second sealing ring is greater than the thickness between the two second annular grooves, ensuring that when the first flange plate and the second flange plate are close to each other, the first sealing ring, the connecting blocks and the second sealing ring are extruded and deformed, so that the first sealing ring, the connecting blocks, the second sealing ring are tightly and reliably connected to the first flange plate and the second flange plate.

[0005] Preferably, a first clamping platform and a first clamping groove are evenly arranged in a ring between the first through hole and the second annular groove on the first flange, and a second clamping platform and a second clamping groove are evenly arranged in a ring between the second through hole and the second annular groove on the second flange. The positions of the first clamping platform and the second clamping groove correspond to each other and are of the same size, and the positions of the second clamping platform and the first clamping groove correspond to each other and are of the same size. When the first flange and the second flange are closely attached to each other, the first clamping platform is inserted into the second clamping groove, and the second clamping platform is inserted into the first clamping groove, further improving the reliability and sealing performance of the connection between the first flange and the second flange.

[0006] Preferably, the first clamping platform, the first clamping groove, the second clamping platform and the second clamping groove are of trapezoidal structures, making the connection between the first clamping platform and the second clamping groove, and between the second clamping platform and the first clamping groove smoother and more convenient.

[0007] Preferably, the first sealing ring, the connecting block and the second sealing ring are made of rubber.

[0008] The beneficial effects of the present utility model are as follows: the gaps between the first flange and the second flange are sealed layer by layer through the first sealing ring and the second sealing ring, improving the sealing effect; the first sealing ring and the second sealing ring are arranged as an integral structure through the connecting block, ensuring a tight and reliable connection between the first flange and the second flange. Description of the Drawings

[0009] Figure 1 is a structural schematic diagram of the present utility model;

[0010] Figure 2 is a schematic diagram of one side of the first flange provided with a first groove;

[0011] Figure 3 is a structural schematic diagram of the first sealing ring and the second sealing ring;

[0012] In the figure: 1. First flange; 2. Second flange; 3. First through hole; 4. Second through hole; 5. Bolt; 6. Nut; 7. First annular groove; 8. Second annular groove; 9. Through groove; 10. First sealing ring; 11. Second sealing ring; 12. Connecting block; 13. First clamping platform; 14. First clamping groove; 15. Second clamping platform; 16. Second clamping groove. Detailed Embodiments

[0013] In order to more clearly understand the technical solution of the present utility model, the present utility model will be further described below with reference to the drawings.

[0014] As Figures 1-3A sealed connecting flange as shown includes a first flange 1 and a second flange 2. A plurality of first through holes 3 are evenly formed in the first flange 1, and a plurality of second through holes 4 are evenly formed in the second flange 2. The positions of the first through holes 3 and the second through holes 4 correspond to each other and have the same aperture. A bolt 5 is arranged through the first through holes 3 and the second through holes 4, and a nut 6 is tightly sleeved on the bolt 5. The first flange 1 and the second flange 2 are reliably connected together through the bolt 5 and the nut 6. First annular grooves 7 are formed at the adjacent central holes of the first flange 1 and the second flange 2 to accommodate a first sealing ring 10. Second annular grooves 8 are formed on both the first flange 1 and the second flange 2 to accommodate a second sealing ring 11. The second annular grooves 8 and the first annular grooves 7 are located on the same side. Four through grooves 9 are evenly formed between the first annular grooves 7 to accommodate connecting blocks 12. A first sealing ring 10 is arranged in the first annular grooves 7 to seal the gap between the first flange 1 and the second flange 2. A second sealing ring 11 is arranged in the second annular grooves 8 to further seal the gap between the first flange 1 and the second flange 2, improving the sealing effect. Four connecting blocks 12 are evenly and fixedly arranged between the first sealing ring 10 and the second sealing ring 11, so that the first sealing ring 10, the connecting blocks 12 and the second sealing ring 11 form an integral body, which is convenient for disassembly and assembly. The materials of the first sealing ring 10, the connecting blocks 12 and the second sealing ring 11 are rubber. The positions of the connecting blocks 12 and the through grooves 9 correspond to each other and have the same width to ensure that the connecting blocks 12 fill the through grooves 9. The connecting blocks 12 are arranged in the through grooves 9. The thickness of the first sealing ring 10 is greater than the thickness between the two first annular grooves 7. The thickness of the connecting blocks 12 is greater than the thickness between the two through grooves 9. The thickness of the second sealing ring 11 is greater than the thickness between the two second annular grooves 8. It is ensured that when the first flange 1 and the second flange 2 are closely abutted together, the first sealing ring 10, the connecting blocks 12 and the second sealing ring 11 are extruded and deformed, so that the first sealing ring 10, the connecting blocks 12, the second sealing ring 11 are tightly and reliably connected to the first flange 1 and the second flange 2.

[0015] On the first flange 1, first clamping platforms 13 and first clamping grooves 14 are evenly and annularly arranged between the first through hole 3 and the second annular groove 8. On the second flange 2, second clamping platforms 15 and second clamping grooves 16 are evenly and annularly arranged between the second through hole 4 and the second annular groove 8. The positions of the first clamping platforms 13 and the second clamping grooves 16 correspond to each other and they have the same size. The positions of the second clamping platforms 15 and the first clamping grooves 14 correspond to each other and they have the same size. When the first flange 1 and the second flange 2 are closely attached to each other, the first clamping platforms 13 are inserted into the second clamping grooves 16, and the second clamping platforms 15 are inserted into the first clamping grooves 14, further improving the connection reliability and sealing performance between the first flange 1 and the second flange 2. The first clamping platforms 13, the first clamping grooves 14, the second clamping platforms 15 and the second clamping grooves 16 are trapezoidal structures, making the connection between the first clamping platforms 13 and the second clamping grooves 16, and between the second clamping platforms 15 and the first clamping grooves 14 smoother and more convenient.

[0016] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A sealed connecting flange, comprising a first flange and a second flange. A plurality of first through holes are evenly formed in the first flange, and a plurality of second through holes are evenly formed in the second flange. The positions of the first through holes and the second through holes correspond to each other and have the same aperture. Bolts are arranged through the first through holes and the second through holes, and nuts are tightly sleeved on the bolts. It is characterized in that, At the central holes where the first flange and the second flange are adjacent, first annular grooves are provided. Second annular grooves are provided on both the first flange and the second flange. The second annular groove and the first annular groove are on the same side. A plurality of through grooves are evenly provided between the first annular groove and the second annular groove. A first sealing ring is arranged in the first annular groove. A second sealing ring is arranged in the second annular groove. A plurality of connecting blocks are evenly and fixedly arranged between the first sealing ring and the second sealing ring. The connecting blocks correspond to the through grooves in position and have the same width. The connecting blocks are arranged in the through grooves. The thickness of the first sealing ring is greater than the thickness between the two first annular grooves. The thickness of the connecting blocks is greater than the thickness between the two through grooves. The thickness of the second sealing ring is greater than the thickness between the two second annular grooves.

2. The sealed connecting flange according to claim 1, characterized in that, First clamping platforms and first clamping grooves are evenly arranged in a ring between the first through hole and the second annular groove on the first flange. Second clamping platforms and second clamping grooves are evenly arranged in a ring between the second through hole and the second annular groove on the second flange. The first clamping platform and the second clamping groove correspond to each other in position and are of the same size. The second clamping platform and the first clamping groove correspond to each other in position and are of the same size.

3. The sealed connection flange according to claim 2, characterized in that, The first clamping platform, the first clamping groove, the second clamping platform and the second clamping groove are of trapezoidal structures.

4. A sealed connection flange according to claim 1, characterized in that, The materials of the first sealing ring, the connecting blocks and the second sealing ring are rubber.

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