Municipal drainage pipeline connector sealing mechanism and sealing method

Abstract

The invention relates to the field of municipal pipelines, and discloses a municipal drainage pipeline connector sealing mechanism and method.The municipal drainage pipeline connector sealing mechanism comprises a first drainage pipe and a second drainage pipe, the outer end of the first drainage pipe is provided with a first socket and a first spigot, and the outer end of the second drainage pipe is provided with a second socket and a second spigot; the first inserting opening can be inserted into the second bell mouth, and a sealing structure is arranged between the second bell mouth and the first inserting opening. Preferably, the sealing structure comprises a rubber ring, the rubber ring is arranged on the outer side of the first inserting opening, and when the first inserting opening is inserted into the second bell mouth, the rubber ring is compressed between the second bell mouth and the first inserting opening. The device is simple and convenient to construct and low in manufacturing cost, and can reduce the manpower and material resource cost in the interface sealing engineering; meanwhile, the sealing performance is enhanced, the possibility of water leakage is reduced, sewage leakage is prevented, related hazards are reduced, urban ecology and infrastructure safety are maintained, and health and comfort of the living environment of citizens are guaranteed.

Description

Technical Field

[0001] The invention relates to the field of municipal pipelines, and in particular to a municipal drainage pipeline interface sealing mechanism and a sealing method. Background Art

[0002] Municipal drainage pipes have emerged with the process of urbanization. With the concentration of urban population and the increase of buildings, the amount of domestic and industrial sewage is huge. For example, many households in large communities produce a large amount of sewage every day, and industrial production also discharges wastewater. Early cities were often troubled by sewage. In order to protect public health and prevent waterlogging and pollution, municipal drainage pipes came into being. They can collect and transport sewage to treatment plants or discharge sites, becoming a key part of urban infrastructure and maintaining normal operation of the city and environmental sanitation.

[0003] At present, the common concrete drainage pipe interfaces on the market mainly include flat-end, tongue-and-groove, socket-and-spigot, and flexible tongue-and-groove. As an early interface form of cement pipes, flat-end pipes have been widely used due to their low manufacturing difficulty, high production efficiency, and low cost. The interface seal adopts a rigid connection method of steel mesh concrete tape, but the sealing effect and seismic performance are poor. Once the foundation shifts and the interface is pulled apart, sewage will pollute the underground soil, causing great inconvenience to society and the environment, so its application is gradually reduced.

[0004] The socket-and-spigot joint uses a rubber ring to seal and stop water. It is a flexible connection. The insertion depth of the joint is 80-100mm, and the relative rotation angle is 1.5°. The cement pipe with this joint has good seismic performance. The pipe foundation can be a gravel foundation or a concrete foundation. The installation speed is fast. However, the socket-and-spigot joint is not suitable for large-diameter cement pipes because it is easy to produce circumferential cracks.

[0005] Flexible tongue-and-groove joints are mainly suitable for cement pipes with a diameter ≥ d1200. They are also flexible connections with more significant advantages of the socket-and-spigot type, especially for large-diameter pipes. In contrast, the depth of the joint pit is difficult to control during the installation of the socket-and-spigot pipe, and the backfill is difficult to be dense. The stress is concentrated at the transition of the pipe socket. In severe cases, circumferential cracks will appear on the pipe body, affecting the service life. The flexible tongue-and-groove pipe body has good contact with the foundation, and is evenly stressed when loaded, making it safer to use. In addition, the outer wall of the socket of the socket-and-spigot pipe is an inclined surface, which is difficult to control when building an inspection well and is prone to leakage. The use of flexible tongue-and-groove pipes can effectively improve this situation.

[0006] However, it should be noted that as the service life of the flexible rubber ring socket connection increases, some interface connections are still likely to leak due to compressive displacement or aging. Taking the current socket-type reinforced concrete pipe as an example, its main sealing material is rubber ring filling seal. After the pipeline is put into use, it often leaks at the interface due to uneven foundation settlement, rubber ring aging, pipeline disturbance and other factors, which in turn causes ground collapse and sewage infiltration, causing pollution to the underground and surrounding water ecological environment. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a municipal drainage pipe interface sealing mechanism and a sealing method, which solves the problem of water leakage at the interface of concrete drainage pipes. Although flat-end, socket-end, and flexible tongue-and-groove types have advantages, they all have problems with sealing or durability.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a municipal drainage pipe interface sealing mechanism, including drainage pipe one and drainage pipe two, the outer end of drainage pipe one is respectively provided with a socket one and a plug one, the outer end of drainage pipe two is respectively provided with a socket two and a plug two, the plug one can be inserted into the socket two, and a sealing structure is provided between the socket two and the plug one.

[0009] Preferably, the sealing structure comprises a rubber ring, which is arranged on the outside of the first socket. When the first socket is inserted into the second socket, the rubber ring is compressed between the second socket and the first socket.

[0010] Preferably, the sealing structure also includes an inner seam processing part, and the inner gap between the socket 2 and the plug 1 is filled with sealing material. The sealing material cooperates with the rubber ring to seal the inner seam to prevent sewage from seeping out of the pipe and protect the rubber ring from being eroded by sewage.

[0011] Preferably, the sealing structure also includes an outer seam treatment part, and the outer gap between the socket 2 and the plug 1 is filled with sealing material. The outer seam treatment part serves as a barrier to prevent external groundwater from infiltrating into the pipeline, and is used to prevent large-scale sewage leakage when the rubber ring or the inner seam seal fails.

[0012] Preferably, the sealing material is flexible waterproof coating 1 and flexible waterproof coating 2, and the flexible waterproof coating 1 and flexible waterproof coating 2 are used for inner seam and outer seam treatment respectively. They are configured in a specific proportion, have good adhesion and waterproof properties, can adapt to the deformation of the pipeline interface, and ensure the sealing effect.

[0013] Preferably, the cross-sectional shape of the rubber ring is circular, and the outer diameter of the rubber ring is slightly larger than the inner diameter of the second socket, which is used to generate a certain compression deformation during installation.

[0014] Preferably, the drain pipe 1 and the drain pipe 2 are both made of concrete, and reinforcing ribs are provided at the interface between the drain pipe 1 and the drain pipe 2 to enhance the strength of the interface.

[0015] The municipal drainage pipe interface sealing method comprises the following steps according to the municipal drainage pipe interface sealing mechanism:

[0016] S1, installation of rubber ring for concrete pipe socket: put the rubber ring on the socket of drainage pipe 1, push it into the socket 2 of drainage pipe 2, and push it into the depth according to the standard;

[0017] S2: Preparation of flexible waterproof coating: according to the ratio of dry powder to water = 1:0.25 (weight ratio), add the flexible waterproof coating into water and knead it into a ball;

[0018] S3: Seam filling inside the pipe: clean the burrs, slag and other debris at the interface inside the pipe, fill the joints manually, squeeze them with a wooden board, and tamp them gently to make them compact around the interface. Finally, apply a plastering treatment 10cm outside the surrounding of the filling.

[0019] S4: Filling of external joints of pipes: clean up burrs, stone chips and other debris on the external joints of pipes, fill the joints manually, squeeze with wooden boards, and tamp lightly to squeeze them into the joints.

[0020] The present invention provides a municipal drainage pipe interface sealing mechanism and sealing method, which has the following beneficial effects:

[0021] 1. The invention has a simple and easy construction process, low operating difficulty, and economical production cost; in the municipal concrete drainage pipe interface sealing project, it can not only greatly reduce the investment in construction costs such as manpower and material resources, but also significantly improve the construction efficiency, so that the project can be completed in a shorter time, which is extremely beneficial to large-scale promotion and application in various municipal projects, thereby providing strong technical and cost support for urban infrastructure construction.

[0022] 2. The present invention significantly improves the sealing performance of pipelines by strengthening the sealing method, greatly reducing the possibility of leakage in drainage pipelines; effectively preventing sewage from leaking outward, eliminating the threat of pollution to groundwater and the surrounding environment from the source, and also greatly reducing serious problems such as road collapse, ground subsidence and soil loss caused by pipeline leakage, comprehensively maintaining the ecological balance of the city and the safety and stability of infrastructure such as roads and buildings, and ensuring the health and comfort of citizens' living environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall stereogram of the present invention;

[0024] Figure 2It is a schematic diagram of the development of the present invention;

[0025] Figure 3 It is a cross-sectional schematic diagram of the use of the present invention;

[0026] Figure 4 For the present invention Figure 3 The enlarged schematic diagram of point A in the middle;

[0027] Figure 5 For the present invention Figure 3 A magnified schematic diagram of point B in the middle.

[0028] Among them, 1. Drain pipe 1; 101. Socket 1; 102. Plug 1; 2. Drain pipe 2; 201. Socket 2; 202. Plug 2; 3. Rubber ring; 4. Flexible waterproof coating 1; 5. Flexible waterproof coating 2. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Please refer to the attached Figure 1 -Attached Figure 2 The embodiment of the present invention provides a municipal drainage pipe interface sealing mechanism, including a drainage pipe 1 and a drainage pipe 2. The outer ends of the drainage pipe 1 are respectively provided with a socket 101 and a plug 102, and the outer ends of the drainage pipe 2 are respectively provided with a socket 201 and a plug 202. Through the design of the socket and the plug, the two drainage pipes can cooperate with each other in a specific way. This is the structural basis for the entire sealing mechanism to realize its function. The plug 102 can be inserted into the socket 201, and a sealing structure is provided between the socket 201 and the plug 102. The sealing structure ensures that the drainage pipe will not leak during the sewage transportation process.

[0031] Please refer to the attached Figure 3 -Attached Figure 5 The sealing structure includes a rubber ring 3, which is arranged on the outside of the socket 102. When the socket 102 is inserted into the socket 201, the rubber ring 3 is compressed between the socket 201 and the socket 102. As an important component of the sealing structure, the rubber ring 3 can be compressed when the pipe is connected by using its own elasticity, thereby filling the gap between the socket and the socket, playing a preliminary sealing role, and preventing sewage leakage;

[0032] The sealing structure also includes an inner seam processing part, in which the inner gap between the second socket 201 and the first plug 102 is filled with sealing material, and the sealing material cooperates with the rubber ring 3 to seal the inner seam, so as to prevent sewage from seeping out from the inside of the pipe and protect the rubber ring 3 from being eroded by sewage. The inner seam processing part further enhances the sealing effect, and by filling the sealing material, the rubber ring 3 can be protected, the service life of the rubber ring can be extended, and the long-term effectiveness of the entire sealing structure can be ensured;

[0033] The sealing structure also includes an outer seam treatment part, in which the outer gap between the second socket 201 and the first plug 102 is filled with sealing material. The outer seam treatment part serves as a barrier to prevent external groundwater from penetrating into the pipeline, and is used to prevent a large amount of sewage leakage when the rubber ring 3 or the inner seam seal fails. The outer seam treatment part provides additional sealing protection, and when there is a problem with the rubber ring or the inner seam seal, it can serve as a line of defense to reduce the possibility of a large amount of sewage leakage and ensure the normal operation of the drainage system.

[0034] The sealing materials are flexible waterproof coating 14 and flexible waterproof coating 25. Flexible waterproof coating 14 and flexible waterproof coating 25 are used for inner seam and outer seam treatment respectively. They are configured in a specific proportion, have good adhesion and waterproof performance, can adapt to the deformation of the pipe interface, and ensure the sealing effect. The flexible waterproof coating can adapt itself according to the deformation of the pipe interface and always maintain good sealing performance, which is very important for drainage pipes in complex underground environments for a long time.

[0035] The cross-sectional shape of the rubber ring 3 is circular, and the outer diameter of the rubber ring 3 is slightly larger than the inner diameter of the socket 201, so that it can produce a certain compression deformation during installation. The circular cross-sectional shape and the specific size design ensure that the rubber ring can produce sufficient compression deformation during installation, thereby tightly filling the gap between the socket and the plug, and achieving an ideal sealing effect;

[0036] Drain pipe 1 and drain pipe 2 are both made of concrete, and reinforcing ribs are provided at the interfaces between drain pipe 1 and drain pipe 2 to enhance the strength of the interfaces. The concrete material ensures the firmness and durability of the drain pipe, while the reinforcing ribs at the interfaces further enhance the strength of the interfaces, preventing damage to the interfaces during pipe connection and use, thereby ensuring the overall structural stability of the drainage pipe.

[0037] Please refer to the attached Figure 1 -Attached Figure 5 The present invention also provides a method for sealing a municipal drainage pipe interface, comprising the following steps:

[0038] S1, installation of the socket rubber ring 3 of the concrete pipe: carefully check the socket 102 of the drainage pipe 1 and the socket 201 of the drainage pipe 2 to ensure that there are no defects, select a suitable high-quality rubber ring 3, carefully put it on the socket 102 to avoid twisting or excessive stretching, then slowly and steadily align the socket 102 with the socket 201, and push it in along the axial direction. During the process, pay attention to the position of the rubber ring 3 to ensure that it is not squeezed out or shifted. At the same time, ensure that the pipeline is level, push it in according to the standard depth, so that the rubber ring 3 is appropriately compressed between the interfaces to form a reliable seal, and check the status of the rubber ring 3 again after completion;

[0039] S2: Preparation of flexible waterproof coating that is watertight: prepare a clean container free of impurities, select qualified flexible waterproof coating, prepare it according to the ratio of dry powder: water = 1:0.25 (weight ratio), weigh dry powder and water with an electronic scale, pour the dry powder into the container and gradually add water, stir while adding water, and keep stirring in a uniform direction and strength until the dry powder is completely dissolved to form a uniform mixture with a certain viscosity, and then knead it into a uniform mass. If it is not used immediately, it needs to be sealed and stored;

[0040] S3: Filling the internal joints of the pipeline: First, clean the internal joints of the pipe thoroughly, and use a wire brush, scraper, etc. to remove burrs, stone chips, cement residues and other debris. Stubborn debris can be handled with a small chisel or sandpaper, but do not damage the inner wall. After cleaning, use a rag or compressed air to remove dust, and ensure that the interface surface is clean, flat and dry. Then manually fill the joints, fill the caulking material into the internal joints, squeeze it with a wooden board, and gently tamp it to squeeze it around the interface to ensure that it is tightly filled. Finally, apply a surface treatment 10 cm outside the caulking area to make the surface flat and smooth to enhance the sealing effect;

[0041] S4: Filling of external joints of pipelines: clean up burrs, stone chips, cement residues and other debris on the external interface of the pipeline to ensure the cleanliness of the interface surface. Use manual filling method to fill the filling material into the external joints, squeeze and tamp it lightly with a wooden board to squeeze the filling material around the interface to ensure that the gap is filled densely and prevent external groundwater from seeping into the pipeline.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A municipal drainage pipe interface sealing mechanism, comprising a drainage pipe 1 (1) and a drainage pipe 2 (2), characterized in that: The outer ends of the drainage pipe 1 (1) are respectively provided with a socket 1 (101) and a plug 1 (102), and the outer ends of the drainage pipe 2 (2) are respectively provided with a socket 2 (201) and a plug 2 (202), the plug 1 (102) can be inserted into the socket 2 (201), and a sealing structure is provided between the socket 2 (201) and the plug 1 (102).

2. The municipal drainage pipe interface sealing mechanism according to claim 1, characterized in that: The sealing structure comprises a rubber ring (3), wherein the rubber ring (3) is arranged on the outside of the first socket (102); when the first socket (102) is inserted into the second socket (201), the rubber ring (3) is compressed between the second socket (201) and the first socket (102).

3. The municipal drainage pipe interface sealing mechanism according to claim 1, characterized in that: The sealing structure also includes an inner seam processing portion, in which the inner gap between the second socket (201) and the first plug (102) is filled with sealing material, and the sealing material cooperates with the rubber ring (3) to seal the inner seam, thereby preventing sewage from seeping out from the inside of the pipe and protecting the rubber ring (3) from being corroded by sewage.

4. The municipal drainage pipe interface sealing mechanism according to claim 1, characterized in that: The sealing structure also includes an outer seam treatment portion, in which the outer gap between the second socket (201) and the first plug (102) is filled with sealing material. The outer seam treatment portion serves as a barrier to prevent external groundwater from infiltrating into the pipeline, and is used to prevent large amounts of sewage from leaking when the rubber ring (3) or the inner seam seal fails.

5. The municipal drainage pipe interface sealing mechanism according to claim 1, characterized in that: The sealing material is a flexible waterproof coating 1 (4) and a flexible waterproof coating 2 (5). The flexible waterproof coating 1 (4) and the flexible waterproof coating 2 (5) are used for inner seam treatment and outer seam treatment respectively. They are configured in a specific proportion, have good adhesion and waterproof properties, can adapt to the deformation of the pipeline interface, and ensure the sealing effect.

6. The municipal drainage pipe interface sealing mechanism according to claim 2, characterized in that: The cross-sectional shape of the rubber ring (3) is circular, and the outer diameter of the rubber ring (3) is slightly larger than the inner diameter of the second socket (201), so as to generate a certain compression deformation during installation.

7. The municipal drainage pipe interface sealing mechanism according to claim 1, characterized in that: The drainage pipe 1 (1) and the drainage pipe 2 (2) are both made of concrete, and reinforcing ribs are provided at the interface between the drainage pipe 1 (1) and the drainage pipe 2 (2) to enhance the strength of the interface.

8. A method for sealing a municipal drainage pipe interface, according to the municipal drainage pipe interface sealing mechanism according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, installation of the rubber ring (3) for the socket of the concrete pipe: put the rubber ring (3) on the socket 1 (102) of the drainage pipe 1 (1), and push it into the socket 2 (201) of the drainage pipe 2 (2), pushing it into the depth according to the standard; S2: Preparation of flexible waterproof coating (waterproof): according to the ratio of dry powder to water = 1:0.25 (weight ratio), add the flexible waterproof coating into water and knead it into a ball; S3: Seam filling inside the pipe: clean the burrs, slag and other debris at the interface inside the pipe, fill the joints manually, squeeze them with a wooden board, and tamp them gently to make them compact around the interface. Finally, apply a plastering treatment 10cm outside the surrounding of the filling. S4: Filling of external joints of pipes: clean up burrs, stone chips and other debris on the external joints of pipes, fill the joints manually, squeeze with wooden boards, and tamp lightly to squeeze them into the joints.

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