Pipeline connecting assembly for municipal water supply and drainage

Abstract

The utility model discloses a municipal water supply and drainage pipeline connecting assembly which comprises a first flange connected with a first pipeline, and an annular convex groove or a concave groove is formed in one side face of the first flange; the second flange is connected with a second pipeline, and one side face of the second flange is provided with an annular convex groove or a concave groove; the first flange and the second flange are fastened or loosened through a plurality of threaded sleeve rods, a nut is arranged at one end of each threaded sleeve rod, and the other end of each threaded sleeve rod is fixedly arranged on the second flange; the sealing ring is provided with a through hole corresponding to the pipe diameter of the first pipeline, the two side faces of the sealing ring are provided with an annular concave groove or a convex groove corresponding to the annular convex groove or the concave groove respectively, and the thickness of the sealing ring is two times larger than that of the annular convex groove or the concave groove. The pipeline connecting assembly provided by the utility model is easy for pipeline connection and has good sealing performance.

Description

Technical Field

[0001] The utility model belongs to the field of municipal water supply and drainage pipelines, and in particular relates to a pipeline connection component for municipal water supply and drainage. Background Art

[0002] Sealing pipe connections is crucial for preventing fluid leakage. Existing pipe sealing structures mostly use threaded or flanged connections. Threaded connections tightly connect two pipes using internal and external threads. However, they have the disadvantage of relatively low pressure bearing capacity, which can lead to leakage, especially in high-pressure environments. Furthermore, the threads are susceptible to corrosion, leading to seal failure. Flange connections also make it difficult to align gaskets and are prone to gasket separation and corrosion.

[0003] Therefore, the utility model proposes a pipe connection assembly for municipal water supply and drainage, so as to improve the sealing performance between pipes and the efficiency of pipe construction. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model proposes a pipe connection assembly for municipal water supply and drainage, which has strong sealing performance between pipes and high construction efficiency.

[0005] The utility model provides a pipe connection assembly for municipal water supply and drainage, comprising:

[0006] a first flange connected to the first pipe, wherein a side surface of the first flange is provided with an annular convex groove or a concave groove;

[0007] a second flange connected to the second pipe, wherein a side surface of the second flange is provided with an annular convex groove or a concave groove;

[0008] The first flange and the second flange are tightened or loosened by a plurality of threaded sleeves, one end of the threaded sleeve is provided with a nut, and the other end is fixed to the second flange;

[0009] A sealing ring is provided with a through hole corresponding to the pipe diameter of the first pipe, and annular grooves or convex grooves corresponding to the annular convex grooves or grooves are respectively provided on both sides of the sealing ring. The thickness of the sealing ring is greater than twice the annular convex groove or groove, and the sealing ring is provided with through holes corresponding to the number of the threaded sleeves.

[0010] Optionally, the thickness of the sealing ring is three times that of the annular convex groove or concave groove.

[0011] Optionally, a radial edge ring of the sealing ring is provided with an annular shell.

[0012] Optionally, the annular shell is made of copper or aluminum, and the sealing ring is made of EPDM rubber.

[0013] Optionally, acrylic rubber is embedded in the inner side of the annular shell.

[0014] Optionally, the inner side surface of the annular shell is provided with anti-slip protrusions.

[0015] Optionally, the anti-slip protrusion is in the shape of a barb.

[0016] As can be seen from the above technical solution, the municipal water supply and drainage pipe connection assembly provided by the utility model has the following advantages:

[0017] 1. The annular grooves or convex grooves on both sides of the sealing ring match the annular convex grooves or grooves of the first flange and the second flange, effectively enhancing the sealing between the pipelines.

[0018] 2. The sealing performance is further enhanced by embedding acrylic rubber on the inner side of the circular shell. The radial edge of the sealing ring is surrounded by the circular shell, which enhances the corrosion resistance of the sealing ring.

[0019] 3. Since the nut of the threaded sleeve does not need to be completely removed from the outside of the bolt, it can effectively prevent the nut from being lost, and the connection method is simpler, and there is no need to find additional fastening accessories during the installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of a municipal water supply and drainage pipe connection assembly according to an embodiment of the present utility model Figure 1 ;

[0021] Figure 2 Schematic diagram of a municipal water supply and drainage pipe connection assembly according to an embodiment of the present utility model Figure 2 ;

[0022] Figure 3 Schematic diagram of a municipal water supply and drainage pipe connection assembly according to an embodiment of the present utility model Figure 3 .

[0023] Reference numerals:

[0024] 1: nut;

[0025] 2: Torus shell;

[0026] 3: Set rod;

[0027] 4: Second pipeline;

[0028] 5: First pipeline;

[0029] 6: First flange;

[0030] 7: Second flange;

[0031] 8: Flange fixing seat;

[0032] 9: annular convex groove;

[0033] 10: inner side of the ring shell;

[0034] 11: annular groove;

[0035] 12: outer side of the ring shell;

[0036] 13: inner side of the ring shell;

[0037] 14: Groove for sealing ring. DETAILED DESCRIPTION

[0038] In order to better understand the purpose, structure and function of the present invention, the municipal water supply and drainage pipe connection assembly of the present invention is further described in detail below with reference to the accompanying drawings.

[0039] like Figure 1 、 Figure 2 As shown, the municipal water supply and drainage pipe connection assembly includes:

[0040] A first flange 6 is connected to the first pipe 5 , and a side surface of the first flange 6 is provided with an annular convex groove (not shown in the figure) or a groove;

[0041] A second flange 7 is connected to the second pipe 4, and a side surface of the second flange 7 is provided with an annular convex groove 9 or a groove;

[0042] The first flange 6 and the second flange 7 are tightened or loosened by a plurality of threaded sleeves 3, one end of the threaded sleeve 3 is provided with a nut, and the other end is fixed to the second flange 7;

[0043] The sealing ring is provided with a through hole corresponding to the diameter of the first pipe 5, and the two side surfaces of the sealing ring are respectively provided with annular grooves or convex grooves 11 corresponding to the annular convex grooves 9 or grooves. The thickness of the sealing ring is greater than twice the annular convex grooves or grooves, and the sealing ring is provided with through holes corresponding to the number of the threaded sleeves 3.

[0044] In this embodiment, the first flange 6 is pre-connected to the first pipe 5 by welding, bolting, or other fasteners, ensuring a secure and airtight connection. The second flange 7 is also pre-connected to the second pipe 4 by welding, bolting, or other fasteners. Annular protrusions or grooves are machined on one side of the first and second flanges 6 and 7 to mate with the annular grooves or protrusions of the sealing ring, enhancing the sealing effect. A nut is provided at one end of the threaded sleeve 3, and the other end is secured to the second flange 7 by a threaded connection. This allows the first and second flanges 6 and 7 to be tightened or loosened by rotating the nut, facilitating installation and removal of the pipe connection assembly. The sealing ring is provided with a through-hole corresponding to the diameter of the first pipe 5, and annular grooves or protrusions are provided on both sides of the sealing ring corresponding to the annular protrusions or grooves, ensuring a tight fit between the sealing ring and the flanges and enhancing sealing performance. The sealing ring is provided with a number of through-holes corresponding to the number of threaded sleeves 3, allowing the threaded sleeves 3 to pass through during installation, ensuring the sealing ring is securely positioned and in place. When repair or replacement of parts is required, just loosen the nut for easy removal and replacement, reducing maintenance costs and workload.

[0045] Optionally, the thickness of the sealing ring is three times that of the annular convex groove 9 or the groove. The thickness of the sealing ring is three times that of the depth of the annular convex groove or the groove, which further enhances the sealing effect, ensures its stability when subjected to pressure or temperature changes, and reduces the risk of sealing failure due to material deformation. During the installation process, the sealing ring is placed between the two flanges, and its through hole corresponds to the pipe diameter of the pipeline. When the flange is tightened by the threaded sleeve 3, the sealing ring is compressed in the annular convex groove or the groove of the flange, forming a tight sealing interface. Since the thickness of the sealing ring is three times that of the depth of the convex groove or the groove, the sealing ring can maintain its shape and sealing performance even under high pressure or extreme temperature, effectively preventing fluid leakage.

[0046] Optionally, a circular shell 2 is provided around the radial edge of the sealing ring. The presence of the circular shell 2 around the radial edge of the sealing ring further enhances the sealing effect. During construction, the circular shell 2 can be integrally formed with the sealing ring through injection molding, vulcanization, or other molding processes. The circular shell 2 can be made of metal (such as copper, aluminum, etc.) or a polymer material (such as plastic, rubber, etc.). When the sealing ring is placed between the two flanges and fastened by the threaded sleeve 3, the contact area between the circular shell 2 and the flanges is increased, enhancing the corrosion resistance of the sealing ring. Furthermore, the circular shell 2 serves as a guide and positioning element, ensuring that the sealing ring is accurately placed in the annular protrusion or groove of the flange during installation, thereby preventing sealing failure due to improper installation.

[0047] Optionally, the annular housing 2 is made of copper or aluminum, and the sealing ring is made of EPDM rubber. The annular housing 2 is made of copper or aluminum. These metal materials have excellent thermal conductivity, strength, and corrosion resistance, effectively protecting the internal sealing ring and improving its durability. The sealing ring is made of EPDM rubber (EPDM), which is resistant to water, ozone, and chemical corrosion, and can maintain good elasticity and sealing properties over a wide temperature range. EPDM also has good aging resistance, ensuring its sealing effect over a long period of time. The copper or aluminum annular housing 2 provides sturdy external support and protection, while the EPDM sealing ring provides a reliable sealing effect. This ensures both structural strength and sealing performance, allowing the entire pipe connection assembly to adapt to various harsh working environments.

[0048] Optionally, the inner side 10 of the annular shell is embedded with acrylic rubber. A layer of acrylic rubber is embedded on the inner side 10 of the annular shell through bonding, vulcanization, or other processes to ensure that the acrylic rubber is tightly bonded to the annular shell 2. Acrylic methyl methacrylate (ACM) is oil-resistant, heat-resistant, and weather-resistant, while also exhibiting excellent elasticity and sealing properties. Embedding it on the inner side 10 of the annular shell further enhances the sealing effect and durability of the entire assembly. When the sealing ring is compressed by the flange, the acrylic rubber layer adheres tightly to the flange surface, forming an additional sealing barrier. This not only improves sealing performance but also reduces the risk of leakage caused by uneven flange surfaces or minor defects. By combining acrylic rubber with the existing EPDM rubber sealing ring, a dual sealing effect is achieved, further reducing the possibility of leakage.

[0049] Optionally, the inner side surface 10 of the annular shell is provided with anti-slip protrusions. Providing anti-slip protrusions on the inner side surface 10 of the annular shell can further enhance the friction between it and the sealing ring, ensuring that the two will not easily separate when subjected to external force or vibration. The provision of anti-slip protrusions can also prevent the sealing ring from sliding or shifting during use to a certain extent, thereby maintaining a stable sealing effect. The shape and size of the anti-slip protrusions can be designed according to specific needs and can be regular geometric shapes (such as round, square, etc.) or irregular shapes. Their height and spacing should also be adjusted according to the actual application scenario to ensure that they can provide sufficient friction without causing excessive obstruction to the installation and removal of the sealing ring.

[0050] Optionally, the anti-slip protrusions are barbed. These barbed protrusions can increase friction between the inner surface of the annular housing 2 and the sealing ring, preventing relative sliding between them. The barbs have sharp tips that can penetrate the surface of the sealing ring, creating a mechanical lock and enhancing the anti-slip effect. The barbed anti-slip protrusions can be fabricated on the inner surface 10 of the annular housing 2 by injection molding or other methods, arranged in a specific pattern or array to ensure optimal anti-slip performance.

[0051] In summary, the present invention includes a first flange connected to a first pipe, one side of the first flange having an annular convex groove or groove disposed thereon; a second flange connected to a second pipe, one side of the second flange having an annular convex groove or groove disposed thereon; the first and second flanges being fastened or loosened by a plurality of threaded rods, one end of each threaded rod having a nut disposed thereon and the other end being fixed to the second flange; and a sealing ring having a through hole corresponding to the diameter of the first pipe, and two sides of the sealing ring having an annular groove or groove disposed thereon corresponding to the annular convex groove or groove, the thickness of the sealing ring being greater than twice the thickness of the annular groove or groove, and the number of through holes in the sealing ring corresponding to the number of the threaded rods. The annular grooves or grooves on both sides of the sealing ring match the annular grooves or grooves of the first and second flanges, effectively enhancing the sealing between the pipes. The sealing is further enhanced by embedding acrylic rubber on the inner side of the annular shell. The annular shell is provided around the radial edge of the sealing ring, enhancing the corrosion resistance of the sealing ring. Since the nut of the threaded sleeve does not need to be completely removed from the outside of the bolt, it can effectively prevent the nut from being lost, and the connection method is simpler, and there is no need to find additional fastening accessories during the installation process.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A pipe connection assembly for municipal water supply and drainage, characterized in that: include: a first flange connected to the first pipe, wherein a side surface of the first flange is provided with an annular convex groove or a concave groove; a second flange connected to the second pipe, wherein a side surface of the second flange is provided with an annular convex groove or a concave groove; The first flange and the second flange are tightened or loosened by a plurality of threaded sleeves, one end of the threaded sleeve is provided with a nut, and the other end is fixed to the second flange; A sealing ring is provided with a through hole corresponding to the pipe diameter of the first pipe, and annular grooves or convex grooves corresponding to the annular convex grooves or grooves are respectively provided on both sides of the sealing ring. The thickness of the sealing ring is greater than twice the annular convex groove or groove, and the sealing ring is provided with through holes corresponding to the number of the threaded sleeves.

2. The municipal water supply and drainage pipe connection assembly according to claim 1, characterized in that: The thickness of the sealing ring is three times that of the annular convex groove or the concave groove.

3. The municipal water supply and drainage pipe connection assembly according to claim 1, characterized in that: The radial edge of the sealing ring is surrounded by a circular shell.

4. The municipal water supply and drainage pipe connection assembly according to claim 3, characterized in that: The material of the annular shell is copper or aluminum, and the material of the sealing ring is EPDM rubber.

5. The municipal water supply and drainage pipe connection assembly according to claim 3 or 4, characterized in that: Acrylic rubber is embedded in the inner side surface of the annular shell.

6. The municipal water supply and drainage pipe connection assembly according to claim 5, characterized in that: The inner side surface of the annular shell is provided with anti-slip protrusions.

7. The municipal water supply and drainage pipe connection assembly according to claim 6, characterized in that: The anti-slip protrusion is in the shape of a barb.

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