Gravity water-stop flange

Abstract

This disclosure relates to the field of water-stop flange technology. One embodiment of this disclosure provides a gravity water-stop flange, including a first flange with a first through hole in the center and a protrusion on the outer side of the first flange near the edge of the first through hole. An annular sealing strip is disposed on the outer surface of the protrusion and is concentrically arranged with the first through hole. A sealing ring is detachably disposed on the annular sealing strip. A second flange has a second through hole in the center and a receiving groove for accommodating the protrusion. After the second flange and the first flange are fastened together, the protrusion can enter the receiving groove, and the annular sealing strip and the sealing ring are located between the receiving groove and the protrusion. This technical solution solves the technical problems of easy cracking of weld joints and poor sealing performance in traditional pipeline flanges in the prior art.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of water-stop flange technology, and more specifically, to gravity water-stop flanges. Background Technology

[0002] In water conservancy projects, building water supply and drainage systems, and various systems involving fluid transportation, the sealing and waterproofing performance of pipe connections is crucial. Poor sealing at pipe connections can lead to leaks. In water supply and drainage pipes, inadequate sealing at joints can result in water waste and may even cause damage to building structures.

[0003] Traditional pipe connection methods, such as some simple welded flanges, can achieve connection to a certain extent, but they have shortcomings in sealing performance, such as the weld joints being prone to cracking and the flange sealing effect being poor, leading to leakage. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a gravity-sealed flange, which solves the technical problems of easy cracking of weld joints and poor sealing performance of flanges in traditional pipelines in the prior art.

[0005] According to one aspect, at least one embodiment of this disclosure provides a gravity-sealed flange, comprising:

[0006] The first flange has a first through hole in the middle, and a protrusion is provided on the outer side of the first flange near the edge of the first through hole.

[0007] An annular sealing strip is disposed on the outer surface of the protrusion, and the annular sealing strip is arranged concentrically with the first through hole;

[0008] A sealing ring is detachably mounted on the annular sealing strip;

[0009] The second flange has a second through hole in the middle and a receiving groove for accommodating the protrusion. The annular sealing strip and the sealing ring are located between the receiving groove and the protrusion.

[0010] Optionally, the protrusion is annular, and the protrusion has a guiding arc surface covering the outer surface of the protrusion and a plane disposed at the bottom of the guiding arc surface. The annular sealing strip has a first covering part and a second covering part, the first covering part being disposed on the guiding arc surface and the second covering part being disposed on the plane.

[0011] Optionally, the top surface of the second cover has a mounting groove, and the sealing ring is engaged in the mounting groove, wherein the thickness of the sealing ring is greater than the depth of the mounting groove.

[0012] Optionally, both the sealing ring and the annular sealing strip are made of rubber.

[0013] Optionally, the thickness of the first covering part is less than the thickness of the second covering part, the first covering part is bonded to the guide arc surface, and the second covering part is detachably disposed on the plane.

[0014] Optionally, the first flange has a groove, and a pusher is provided in the groove. The top surface of the pusher is used to abut against the sealing ring, and the pusher is used to push the sealing ring so that the top surface of the sealing ring abuts against the inner wall of the receiving groove.

[0015] Optionally, the pusher includes:

[0016] A spring is disposed at the bottom of the inner side of the groove;

[0017] A push rod, the spring being used to push the push rod outward from the groove, so that the other end of the push rod extends out of the groove and through the plane, and then abuts against the bottom surface of the sealing ring.

[0018] Optionally, a limiting ring is provided on the inner wall of the groove, and a stop block is provided on the top rod, the stop block being located between the limiting ring and the bottom wall of 104.

[0019] Optionally, both the first flange and the second flange are provided with threaded holes.

[0020] Optionally, the top surface of the sealing ring has anti-slip ridges.

[0021] The beneficial effects of the embodiments disclosed herein are as follows:

[0022] In this disclosure, a first flange is fixed to one end of a pipe section using bolts or an integral molding process, and a second flange is fixed to one end of another pipe section. When the two pipe sections are joined, the protrusion of the first flange aligns with the receiving groove of the second flange and inserts, causing the annular sealing strip and sealing ring to deform under pressure and fill the gap between the receiving groove and the protrusion. Compared to traditional simple welded flanges, the use of the pipe's gravity, coupled with the added annular sealing strip and sealing ring, effectively improves the sealing performance of the pipe connection through a double sealing structure. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0024] Figure 1This is a schematic diagram of the structure of the first flange and the annular sealing strip in one embodiment of this disclosure;

[0025] Figure 2 This is a schematic diagram of the internal structure of the first flange and the second flange after connection in another embodiment of this disclosure;

[0026] Figure 3 for Figure 2 A schematic diagram of the second flange structure in the embodiment;

[0027] Figure 4 for Figure 2 Enlarged view of a portion of point A in the middle;

[0028] Figure 5 for Figure 1 A schematic diagram of the mounting groove for the annular sealing strip in the embodiment.

[0029] In the figure: 1. First flange, 101. First through hole, 102. Protrusion, 1021. Guide arc surface, 1022. Flat surface, 103. Limiting ring, 104. Groove, 2. Annular sealing strip, 201. First cover, 202. Second cover, 2021. Mounting groove, 3. Sealing ring, 301. Anti-slip protrusion, 4. Second flange, 401. Second through hole, 402. Receiving groove, 5. Pushing component, 501. Push rod, 5011. Stop block, 502. Spring, 6. Bolt, 7. Threaded hole. Detailed Implementation

[0030] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0031] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0032] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0033] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0035] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] like Figures 1-5 As shown, a gravity-sealed flange according to an embodiment of this disclosure is illustrated. The first flange 1 is made of steel, and the diameter of the first through hole 101 in the center is adapted to the outer diameter of the pipe. A protrusion 102 is provided around the outer edge of the first through hole 101. The annular sealing strip 2 is made of water-resistant rubber and tightly wraps around the outer surface of the protrusion 102, and is concentric with the first through hole 101. The sealing ring 3 is made of silicone and is installed on the annular sealing strip 2 by snap-fit. The second flange 4 is also made of steel, and the second through hole 401 in the center corresponds to the first through hole 101. The receiving groove 402 can completely accommodate the protrusion 102.

[0037] For example, such as Figure 1 and Figure 2 As shown, the first flange 1 is integrally formed or bolted to one end of a pipe section, and the second flange 4 is fixed to one end of another pipe section. When the two pipe sections are joined, the protrusion 102 of the first flange 1 aligns with the receiving groove 402 of the second flange 4 and is inserted. The annular sealing strip 2 and the sealing ring 3 are compressed and deformed, filling the gap between the receiving groove 402 and the protrusion 102. Compared with traditional simple welded flanges, the addition of the annular sealing strip 2 and the sealing ring 3, utilizing a double sealing structure, effectively improves the sealing performance of the pipe connection.

[0038] In some examples, the protrusion 102 is annular, and the protrusion 102 has a guide arc surface 1021 and a flat surface 1022. The first cover 201 of the annular sealing strip 2 is adhered to the guide arc surface 1021; the second cover 202 is connected and fixed to the flat surface 1022 by bolts 6.

[0039] For example, such as Figure 2 As shown, when installing the annular sealing strip 2, the first cover 201 is first adhered to the guide arc surface 1021 with waterproof adhesive, and then the second cover 202 is fixed to the plane 1022 with bolts 6. It should be noted that the first cover 201 and the second cover 202 are an integral structure. When the first flange 1 and the second flange 4 are mated, the guide arc surface 1021 guides the protrusion 102 to quickly enter the receiving groove 402, and the first cover 201 and the second cover 202 are deformed by compression to achieve a seal. The guide arc surface 1021 facilitates positioning and guidance during installation, improving installation efficiency; the first cover 201 and the second cover 202 with different thicknesses and installation methods can better adapt to the stress and sealing requirements of different parts of the protrusion 102, improving the sealing effect.

[0040] In some examples, the top surface of the second cover 202 has a mounting groove 2021 for engaging the sealing ring 3. The sealing ring 3 is made of a suitable rubber material, and after being installed into the mounting groove 2021, its top surface protrudes from the top surface of the second cover 202.

[0041] For example, such as Figure 3 As shown, the sealing ring 3 is first inserted into the mounting groove 2021, and then the annular sealing strip 2 with the sealing ring 3 is installed onto the protrusion 102. When the two flanges are joined, the protruding sealing ring 3 first contacts the inner wall of the receiving groove 402 of the second flange 4 and is deformed by compression. The mounting groove 2021 facilitates the installation and positioning of the sealing ring 3, and the protruding sealing ring 3 can produce a large sealing deformation under a small compressive force, enhancing the sealing effect. In addition, the mounting groove 2021 can prevent the sealing ring 3 from shifting during installation and use.

[0042] In some examples, both the sealing ring 3 and the annular sealing strip 2 are made of rubber.

[0043] For example, such as Figure 2 As shown, both the sealing ring 3 and the annular sealing strip 2 are made of rubber material with good elasticity, water resistance, and weather resistance. Good elasticity allows it to adapt to different degrees of compression deformation, ensuring a good sealing effect; water resistance and weather resistance ensure stable performance in humid environments and long-term use, extending service life.

[0044] In some examples, the first cover 201 is firmly bonded to the guide arc surface 1021 with a special rubber adhesive, and several bolt holes 6 are evenly distributed on each second cover 202. The second cover 202 is detachably mounted on the plane 1022 by bolts 6, which are internal hex bolts 6.

[0045] For example, such as Figure 2 and Figure 4 As shown, during installation, the first cover 201 is first bonded to the guide arc surface 1021, and then the second cover 202 is fixed to the plane 1022 by bolts 6. When maintaining or replacing the annular sealing strip 2, the bolts 6 of the second cover 202 can be easily removed for operation. The thinner first cover 201 facilitates fitting against the guide arc surface 1021, and the bonding method ensures a tight fit between the first cover 201 and the protrusion 102; the thicker second cover 202 is connected by bolts 6, facilitating disassembly and replacement.

[0046] In some examples, the first flange 1 has a groove 104 located near the plane 1022 of the protrusion 102. The pusher 5 is a combination of a spring 502 and a push rod 501. The spring 502 is installed at the bottom of the groove 104; one end of the push rod 501 extends out of the groove 104, passes through a pre-drilled hole in the plane 1022, and abuts against the bottom surface of the sealing ring 3.

[0047] For example, such as Figure 2 As shown, before the two flanges are joined, the push rod 501 is extended under the action of the spring 502, with its top abutting against the sealing ring 3. When the two flanges are joined, as the protrusion 102 of the first flange 1 enters the receiving groove 402 of the second flange 4, the spring 502 is further compressed, and the push rod 501 pushes the sealing ring 3 upward, making the sealing ring 3 more tightly abut against the inner wall of the receiving groove 402. The pusher 5 can automatically adjust the position and pressure of the sealing ring 3 to ensure that the sealing ring 3 can be in close contact with the inner wall of the receiving groove 402 under different installation conditions, thereby enhancing sealing reliability and reducing the risk of leakage due to installation deviation.

[0048] In some examples, the pusher 5 includes a spring 502 and a push rod 501. The push rod 501 is cylindrical, and the spring 502 is located at the bottom of the inner side of the groove 104. One end of the push rod 501 extends out of the groove 104 and passes through the plane 1022 before abutting against the bottom surface of the sealing ring 3. The other end of the push rod 501 abuts against the spring 502. After the first flange 1 and the second flange 4 are engaged, the spring 502 pushes the push rod 501 upward.

[0049] For example, such as Figure 2 and Figure 4As shown, when the first flange 1 and the second flange 4 begin to mate, the protrusion 102 gradually enters the receiving groove 402. During this process, the push rod 501 moves with the first flange 1, the spring 502 is compressed, and the upward elastic force is transmitted to the sealing ring 3 through the push rod 501, so that the sealing ring 3 fits tightly against the inner wall of the receiving groove 402.

[0050] In some examples, a limiting ring 103 is provided on the inner wall of the groove 104, and a stop block 5011 is provided on the push rod 501. After the push rod 501 slides, the limiting ring 103 limits the stop block 5011.

[0051] For example, such as Figure 4 As shown, the retaining ring 103 and the stop block 5011 cooperate to prevent the push rod 501 from being pushed out of the groove 104 under the action of the spring 502. This ensures that when the first flange 1 is idle, the push rod 501 can always be located in the groove 104, preventing it from being lost.

[0052] In some examples, both the first flange 1 and the second flange 4 are provided with threaded holes 7. After the first flange 1 and the second flange 4 are fixed to the pipe respectively, the two flanges are further tightened by installing bolts in the threaded holes 7, so that the protrusion 102 and the receiving groove 402 fit more tightly, and the sealing effect of the annular sealing strip 2 and the sealing ring 3 is better.

[0053] In some examples, the top surface of the sealing ring 3 has an anti-slip protrusion 301. When the first flange 1 and the second flange 4 are mated, and the sealing ring 3 is compressed and deformed to abut against the inner wall of the receiving groove 402, the anti-slip protrusion 301 increases the friction with the inner wall of the receiving groove 402, preventing the sealing ring 3 from sliding during the compression process. The anti-slip protrusion 301 effectively enhances the stability of the sealing ring 3, ensures accurate sealing position, and improves sealing performance. Especially when the fluid pressure inside the pipeline fluctuates or the pipeline experiences slight vibration, it can prevent leakage caused by the displacement of the sealing ring 3.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A gravity-operated water-stop flange, characterized in that, include: The first flange (1) has a first through hole (101) in the middle, and a protrusion (102) is provided on the outer side of the edge of the first flange (1) near the first through hole (101). An annular sealing strip (2) is disposed on the outer surface of the protrusion (102), and the annular sealing strip (2) is arranged concentrically with the first through hole (101); A sealing ring (3) is detachably mounted on the annular sealing strip (2); The second flange (4) has a second through hole (401) in the middle and a receiving groove (402) for receiving the protrusion (102). The annular sealing strip (2) and the sealing ring (3) are located between the receiving groove (402) and the protrusion (102).

2. The gravity-operated water-stop flange according to claim 1, characterized in that, The protrusion (102) is annular, and the protrusion (102) has a guide arc surface (1021) covering the outer surface of the protrusion (102) and a plane (1022) disposed at the bottom of the guide arc surface (1021). The annular sealing strip (2) has a first covering part (201) and a second covering part (202). The first covering part (201) is disposed on the guide arc surface (1021), and the second covering part (202) is disposed on the plane (1022).

3. The gravity-operated water-stop flange according to claim 2, characterized in that, The top surface of the second cover (202) has a mounting groove (2021), and the sealing ring (3) is engaged in the mounting groove (2021). The thickness of the sealing ring (3) is greater than the depth of the mounting groove (2021).

4. The gravity-operated water-stop flange according to claim 1, characterized in that, Both the sealing ring (3) and the annular sealing strip (2) are made of rubber.

5. The gravity-operated water-stop flange according to claim 2, characterized in that, The thickness of the first covering part (201) is less than the thickness of the second covering part (202). The first covering part (201) is bonded to the guide arc surface (1021), and the second covering part (202) is detachably disposed on the plane (1022).

6. The gravity-operated water-stop flange according to claim 2, characterized in that, The first flange (1) has a groove (104) and a pusher (5) is provided in the groove (104). The top surface of the pusher (5) is used to abut against the sealing ring (3). The pusher (5) is used to push the sealing ring (3) so that the top surface of the sealing ring (3) abuts against the inner wall of the receiving groove (402).

7. The gravity-operated water-stop flange according to claim 6, characterized in that, The pusher (5) includes: A spring (502) is disposed at the bottom of the inner side of the groove (104); The spring (502) is used to push the push rod (501) to the outside of the groove (104) so ​​that the other end of the push rod (501) extends out of the groove (104) and passes through the plane (1022) and can abut against the bottom surface of the sealing ring (3).

8. The gravity-operated water-stop flange according to claim 7, characterized in that, A limiting ring (103) is provided on the inner wall of the groove (104), and a stop block (5011) is provided on the top rod (501). The stop block (5011) is located between the limiting ring (103) and the bottom wall of the groove (104).

9. The gravity-operated water-stop flange according to claim 1, characterized in that, Both the first flange (1) and the second flange (4) are provided with threaded holes (7).

10. The gravity-operated water-stop flange according to claim 1, characterized in that, The top surface of the sealing ring (3) has an anti-slip protrusion (301).

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