Anti-leakage connecting structure for water supply pipeline

Abstract

The utility model relates to a water supply pipeline anti-leakage connecting structure which comprises two pipelines, flange plates are arranged at the opposite ends of the two pipelines, a sealing gasket is arranged between the two flange plates, and the two flange plates are detachably connected. The two flange plates are jointly sleeved with the connecting ring, an annular groove is formed in an inner ring of the connecting ring, the inner ring face, on the right side of the annular groove, of the connecting ring is fixedly connected with the outer ring face, on the right side, of the flange plate, the sealing ring arranged on the outer side between the two flange plates in a sleeving mode is arranged in the annular groove, and a plurality of top plates are annularly arrayed in the annular groove; the inner ends of the top plates are connected with the outer ring face of the sealing ring, each top plate is driven by a driving piece to be close to or away from the center of the connecting ring, the left portion of the inner end of each top plate extends into the left flange plate, and the right portion of the inner end extends into the right flange plate. The utility model solves the problem that the sealing gasket at the joint of the water supply pipeline buried underground is easy to age.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection technology, specifically to a leak-proof connection structure for water supply pipelines. Background Technology

[0002] Water supply pipelines are pipeline systems used to transport various types of clean water, such as domestic water, industrial water, and fire-fighting water. They are a key component in urban water supply and building water supply projects. The connection of water supply pipelines is a crucial link in the water supply system. Flange connection is a common method of connecting water supply pipelines. Both ends of the two pipelines to be connected are equipped with flanges, and a sealing gasket is placed between the two flanges. The two flanges are connected by bolts.

[0003] However, the gasket between the two flanges is prone to aging, causing water supply pipes to leak, especially in underground water supply pipes. Acidic or alkaline substances, salts, or industrial pollutants in the underground soil can accelerate the chemical degradation of the gasket through penetration or direct contact. Anaerobic bacteria or fungi can decompose the organic matter in the gasket, leading to its destruction. Aging gaskets can easily cause water supply pipes to leak, which not only wastes water resources, but also causes the soil supporting the water supply pipe to be eroded, resulting in the water supply pipe losing its support and deforming. Summary of the Invention

[0004] This utility model addresses the problem of easy aging of sealing gaskets at the connection points of buried water supply pipes by providing a leak-proof connection structure for water supply pipes. This structure can slow down the aging of the sealing gaskets and prevent water leakage from the water supply pipes.

[0005] To solve the above problems, the technical solution of this utility model is:

[0006] A leak-proof connection structure for water supply pipelines includes two pipes, each with a flange at its opposite end and a sealing gasket between them. The two flanges are detachably connected. The structure also includes a connecting ring and a sealing ring. A connecting ring is fitted over both flanges. The inner ring of the connecting ring has an annular groove. The inner ring surface of the connecting ring on the right side of the annular groove is fixedly connected to the outer ring surface of the right flange. A sealing ring is fitted over the outer side between the two flanges within the annular groove. Multiple top plates are arranged in a ring array within the annular groove. The inner end of each top plate is connected to the outer ring surface of the sealing ring. Each top plate is driven by a driving component to move closer to or away from the center of the connecting ring. The left inner end of each top plate extends into the left flange, and the right inner end extends into the right flange. The connection point between the sealing ring and each top plate is pressed against the corresponding top plate, causing it to bend towards the center of the connecting ring.

[0007] Furthermore, the outer ring surface of the left flange has a recessed left groove on the right side to accommodate the left side of the inner end of multiple top plates, and the right end of the left groove penetrates the right side of the left flange. The outer ring surface of the right flange has a recessed right groove on the left side to accommodate the right side of the inner end of multiple top plates, and the left end of the right groove penetrates the left side of the right flange.

[0008] Furthermore, the left and right grooves corresponding to the same top plate are symmetrical, and the front and rear sides of the upper left groove are connected to the outer ring of the left flange with a rounded transition. The bottom surface of the upper left groove is a raised arc-shaped surface facing the center of the connecting ring.

[0009] Furthermore, the thickness of each top plate is less than the width of the corresponding left groove, and the side of each top plate facing the center of the connecting ring is an arc-shaped surface with a protrusion facing the center of the connecting ring.

[0010] Furthermore, each of the top plates has a corresponding drive component including a slide plate and a bolt. Each top plate has a slide plate located in an annular groove connected to its outer end. The left and right sides of the slide plate slide in contact with the left and right sides of the annular groove, respectively. The outer end of the slide plate is connected to a bolt. The head of the bolt is located outside the connecting ring, and the rod is rotatably connected to the connecting ring. The free end of the bolt rod extends into the slide plate and is threadedly connected to the slide plate.

[0011] Furthermore, the left side of the inner ring surface of the sealing ring contacts the outer ring surface of the left flange, and the right side of the inner ring surface contacts the outer ring surface of the right flange. When the sliding plates on the multiple driving components contact the bottom surface of the annular groove, the sealing ring is in a natural state, and the inner diameter of the sealing ring is the same as the inner diameter of the connecting ring.

[0012] The beneficial effects of this utility model through the above technical solution are as follows:

[0013] The sealing ring of this invention can wrap around the flanges of two pipes, and through the pressure of multiple top plates, the sealing ring can be tightened to wrap around the gap between the two flanges, preventing the gasket from prematurely contacting chemicals or microorganisms in the soil and causing aging, thereby preventing water leakage at the connection of the pipes at the flanges. Attached Figure Description

[0014] Figure 1 This is a sectional front view of the present invention;

[0015] Figure 2 yes Figure 1 Sectional view at point AA;

[0016] Figure 3 This is a schematic diagram of the connection between the two flanges of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the sealing ring of this utility model connected to multiple top plates.

[0018] The attached diagram is labeled as follows: 1. Pipe, 2. Flange, 3. Gasket, 5. Connecting ring, 6. Annular groove, 7. Sealing ring, 8. Top plate, 9. Left groove, 10. Right groove, 11. Threaded rod, 12. Nut, 13. Slide plate, 14. Bolt. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0020] like Figures 1-4 As shown, a leak-proof connection structure for water supply pipelines includes two pipes 1, each with a flange 2 at its opposite end, a sealing gasket 3 between the two flanges 2, and the two flanges 2 are detachably connected. Multiple screws 11 are provided on the two flanges 2, each screw 11 sequentially passing through the left flange 2, the sealing gasket 3, and the right flange 2, with the free end of each screw 11 limited by a nut 12. The structure also includes a connecting ring 5 and a sealing ring 7. The connecting ring 5 is a circular ring with an inner diameter matching the outer diameter of any flange 2. Both flanges 2 are fitted with the connecting ring 5. The inner ring of the connecting ring 5 has an annular groove 6, the opening of which... Facing the center of the connecting ring 5, the inner ring surface of the connecting ring 5 on the right side of the annular groove 6 is fixedly connected to the outer ring surface of the flange 2 on the right side. The annular groove 6 is provided with a sealing ring 7 that is sleeved on the outside between the two flanges 2. The sealing ring 7 is a circular ring made of elastic rubber. Multiple top plates 8 are arranged in annular array in the annular groove 6. The inner end of each top plate 8 is connected to the outer ring surface of the sealing ring 7. Each top plate 8 is driven by a driving component to move closer to or away from the center of the connecting ring 5. The left part of the inner end of each top plate 8 extends into the left flange 2, and the right part of the inner end extends into the right flange 2. The connection between the sealing ring 7 and each top plate 8 is pressed by the corresponding top plate 8 to bend towards the center of the connecting ring 5.

[0021] The outer ring surface of the left flange 2 has a recessed left groove 9 on the right side to accommodate the left side of the inner end of multiple top plates 8. The right end of the left groove 9 penetrates the right side of the left flange 2. The outer ring surface of the right flange 2 has a recessed right groove 10 on the left side to accommodate the right side of the inner end of multiple top plates 8. The left end of the right groove 10 penetrates the left side of the right flange 2. The outer diameter of the sealing gasket 3 is smaller than the inner diameter of the ring in which the multiple left grooves 9 are located.

[0022] The left groove 9 and right groove 10 corresponding to the top plate 8 are symmetrical. The front and rear sides of the upper left groove 9 are connected to the outer ring of the left flange 2 with a rounded transition. The bottom surface of the upper left groove 9 is a raised arc-shaped surface facing the center of the connecting ring 5.

[0023] The thickness of each top plate 8 is less than the width of the corresponding left groove 9, and the side of each top plate 8 facing the center of the connecting ring 5 is an arc-shaped surface with a protrusion facing the center of the connecting ring 5.

[0024] Each of the top plates 8 has a corresponding drive component including a slide plate 13 and a bolt 14. The outer end of each top plate 8 is connected to a slide plate 13 located in an annular groove 6. The left and right sides of the slide plate 13 slide in contact with the left and right sides of the annular groove 6, respectively. The outer end of the slide plate 13 is connected to a bolt 14. The head of the bolt 14 is located outside the connecting ring 5, and the rod is rotatably connected to the connecting ring 5. The free end of the rod of the bolt 14 extends into the slide plate 13 and is threadedly connected to the slide plate 13.

[0025] The left side of the inner ring surface of the sealing ring 7 contacts the outer ring surface of the left flange 2, and the right side of the inner ring surface contacts the outer ring surface of the right flange 2. When the sliding plates 13 on the multiple driving components contact the bottom surface of the annular groove 6, the sealing ring 7 is in a natural state. The inner diameter of the sealing ring 7 is the same as the inner diameter of the connecting ring 5. The bottom surface of the annular groove 6 is the side opposite to the opening of the annular groove 6.

[0026] During installation, rotate the bolt 14 on each drive component. When each bolt 14 rotates, it drives the connected slide plate 13 to move away from the center of the connecting ring 5 until each slide plate 13 contacts the bottom surface of the annular groove 6. At this time, the sealing ring 7 is in its natural state.

[0027] As the two flanges 2 are connected close to each other via screw 11, the left part of the connecting ring 5 gradually fits over the left flange 2, and the sealing ring 7 on the connecting ring 5 gradually fits over the outer side between the two flanges 2, i.e., the outer side of the sealing gasket 3. After the two flanges 2 are connected by screw 11 and the screw 11 is limited by nut 12, the sealing gasket 3 between the two flanges 2 is compressed. The sealing gasket can prevent water leakage in the two pipes. Subsequently, the bolts 14 on each driving component are rotated in the opposite direction, causing the bolts 14 to drive the connected sliding plate 13 to move towards the center of the connecting ring 5. Each sliding plate 13 drives the connected top plate 8 to move to the corresponding left. The sealing ring moves within the groove 9 and the right groove 10. When the left end of the inner end of each top plate 8 extends into the corresponding left groove 9 and the right end extends into the corresponding right groove 10, the connection between the sealing ring 7 and each top plate 8 is pressed by the corresponding top plate 8 and bent towards the center of the connecting ring 5. At this time, the sealing ring 7 is in a taut state and wraps around the outside between the two flanges, which can seal the gap between the two flanges. After the two pipes 1 are buried underground, the sealing ring prevents chemicals and microorganisms in the soil from contacting the sealing gasket 3 too early, which can extend the service life of the sealing gasket 3, avoid premature aging of the sealing gasket 3, and thus avoid water leakage at the connection between the two pipes 1.

[0028] The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Any equivalent or equivalent modifications or substitutions to the technical solutions of the present utility model without departing from the spirit of the present utility model or the scope of disclosure shall fall within the protection scope of the present utility model.

Claims

1. A leak-proof connection structure for water supply pipelines, comprising two pipelines (1), each pipeline (1) having a flange (2) at its opposite ends, a sealing gasket (3) between the two flanges (2), and the two flanges (2) being detachably connected; characterized in that, It also includes a connecting ring (5) and a sealing ring (7). The two flanges (2) are fitted with a connecting ring (5). The inner ring of the connecting ring (5) is provided with an annular groove (6). The inner ring surface of the connecting ring (5) on the right side of the annular groove (6) is fixedly connected to the outer ring surface of the flange (2) on the right side. The annular groove (6) is provided with a sealing ring (7) fitted on the outside between the two flanges (2). The annular groove (6) has a ring array of multiple top plates (8). The inner end of the top plate (8) is connected to the outer ring surface of the sealing ring (7). Each top plate (8) is driven by a driving component to approach or move away from the center of the connecting ring (5). The left part of the inner end of each top plate (8) extends into the left flange (2) and the right part of the inner end extends into the right flange (2). The connection between the sealing ring (7) and each top plate (8) is pressed by the corresponding top plate (8) to bend towards the center of the connecting ring (5).

2. The water supply pipeline anti-leakage connection structure according to claim 1, characterized in that, The outer ring surface of the flange (2) on the left side has a recessed left groove (9) on the right side to accommodate the left side of the inner end of multiple top plates (8). The right end of the left groove (9) penetrates the right side of the left flange (2). The outer ring surface of the flange (2) on the right side has a recessed right groove (10) on the left side to accommodate the right side of the inner end of multiple top plates (8). The left end of the right groove (10) penetrates the left side of the right flange (2).

3. The water supply pipeline anti-leakage connection structure according to claim 2, characterized in that, The left groove (9) and right groove (10) corresponding to the same top plate (8) are symmetrical. The front and rear sides of the upper left groove (9) are connected to the outer ring of the left flange (2) with a rounded transition. The bottom surface of the upper left groove (9) is a raised arc-shaped surface facing the center of the connecting ring (5).

4. The water supply pipeline anti-leakage connection structure according to claim 3, characterized in that, The thickness of each top plate (8) is less than the width of the corresponding left groove (9), and the side of each top plate (8) facing the center of the connecting ring (5) is an arc-shaped surface with a protrusion facing the center of the connecting ring (5).

5. The anti-leakage connection structure for water supply pipelines according to claim 1, characterized in that, Each of the top plates (8) has a corresponding drive component including a slide plate (13) and a bolt (14). The outer end of each top plate (8) is connected to a slide plate (13) located in an annular groove (6). The left and right sides of the slide plate (13) slide in contact with the left and right sides of the annular groove (6) respectively. The outer end of the slide plate (13) is connected to a bolt (14). The head of the bolt (14) is located outside the connecting ring (5), and the rod is rotatably connected to the connecting ring (5). The free end of the rod of the bolt (14) extends into the slide plate (13) and is threadedly connected to the slide plate (13).

6. The water supply pipeline anti-leakage connection structure according to claim 5, characterized in that, The inner ring (7) has its left side contacting the outer ring of the left flange (2) and its right side contacting the outer ring of the right flange (2). When the sliding plates (13) on the multiple drive components contact the bottom surface of the annular groove (6), the sealing ring (7) is in a natural state. The inner diameter of the sealing ring (7) is the same as the inner diameter of the connecting ring (5).

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