Water-swellable rubber sealing ring

Abstract

The utility model belongs to the technical field of rubber products, and particularly relates to a rubber sealing ring capable of expanding when encountering water, the rubber sealing ring is sleeved on a pipeline, the rubber sealing ring is a cylindrical sealing ring or an annular sealing ring, and the cylindrical sealing ring comprises an inner ring water stop ring and an outer auxiliary ring on the outer side; the section of the ring body of the circular ring type sealing ring is circular; the outer auxiliary ring can be arranged outside the inner-ring water stop ring, so that a worker pulls the outer auxiliary ring to drive the inner-ring water stop ring to move on a pipeline, tearing of the inner-ring water stop ring in the radial direction is reduced, and therefore deformation of the inner-ring water stop ring is reduced, and the water stop ring is tightly attached to the pipeline; after the annular sealing ring is arranged on the pipeline in a sleeving mode, the annular sealing ring linearly moves on the pipeline by rolling the annular sealing ring, and deformation of the annular sealing ring is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of rubber product technology, specifically relating to a rubber sealing ring that expands when exposed to water. Background Technology

[0002] In existing technologies, rubber sealing rings are widely used in construction and other fields, especially in underground water pipes and floor drainage systems, where water-stop strips or water-stop rings are required. Existing water-swellable water-stop strips and rings have rectangular cross-sections. The tightness of the water-stop strip wrapped around the pipe depends on the operator's skill. When fitting the water-stop ring into the pipe, the lack of gap between the inner ring and the outer edge of the pipe makes it difficult for operators to fit the ring into the designated position. Furthermore, the water-stop ring is prone to deformation during this process, resulting in a loose fit between the inner ring and the pipe.

[0003] Therefore, a rubber sealing ring that is easier to fit onto pipes and does not easily deform during installation and expands when exposed to water is needed. Utility Model Content

[0004] To address the problem of deformation of existing water-stop rings during pipeline installation, this invention provides a water-swellable rubber sealing ring with both cylindrical and annular structures. The cylindrical sealing ring utilizes an outer auxiliary ring around the inner water-stop ring, allowing workers to move the inner water-stop ring along the pipeline by pulling the outer auxiliary ring, thus reducing radial tearing and deformation, and ensuring a tight fit between the water-stop ring and the pipeline. The annular sealing ring, after being installed on the pipeline, moves linearly along the pipeline by rolling it, further reducing deformation.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a water-swellable rubber sealing ring, which is fitted onto the pipeline. The key point is that the rubber sealing ring is a cylindrical sealing ring or an annular sealing ring. The cylindrical sealing ring includes an inner water-stop ring and an outer auxiliary ring. The annular sealing ring has a circular cross-section.

[0006] The cylindrical sealing ring includes an inner water-stop ring with an outer auxiliary ring. The inner water-stop ring fits snugly against the outer surface of the pipeline. When installing the cylindrical sealing ring, the inner water-stop ring is fitted onto the pipeline. If it is necessary to move the inner water-stop ring to a designated position, the operator applies force to the outer auxiliary ring, squeezing or pulling it to move the inner water-stop ring along the pipeline. This reduces radial tension on the inner water-stop ring, thereby reducing its deformation and ensuring a tight fit between the inner water-stop ring and the pipeline. The outer auxiliary ring also acts as a limiter for the inner water-stop ring, reducing its deformation. The annular sealing ring has a circular cross-section. This structure allows the annular sealing ring to roll along the outer surface of the pipeline after being fitted onto it. Compared to ordinary rectangular water-stop rings, this also reduces deformation, ensuring a tight fit between the annular sealing ring and the outer surface of the pipeline, resulting in better water sealing and preventing water droplets from flowing down along the deformed areas of the water-stop ring.

[0007] Preferably, the upper surface of the inner water-stop ring of the cylindrical sealing ring is lower than the upper surface of the outer auxiliary ring, and the lower surface of the inner water-stop ring is higher than the lower surface of the outer auxiliary ring. The outer auxiliary ring, in conjunction with the inner water-stop ring and the pipeline, can form an arc-shaped groove space. During use, the water-stop ring may tilt downwards from the inside to the outside. In this case, water droplets will flow downwards along the water-stop ring from the inside to the outside. The outer auxiliary ring can prevent water droplets from flowing to the outside of the inner water-stop ring, thus preventing leakage.

[0008] Preferably, the outer auxiliary ring extends to the inner water-stop ring at the same height, and the thickness ratio of the inner water-stop ring to the outer auxiliary ring is 1:2 to 1:4.

[0009] Preferably, the outer surface of the outer auxiliary ring is provided with anti-slip protrusions. The anti-slip protrusions can prevent the operator from slipping when handling it, making it easier for the operator to use.

[0010] Preferably, the annular sealing ring has a hollow structure.

[0011] The beneficial effects of this utility model are as follows: Both cylindrical and annular sealing rings can reduce the deformation of the water-stop ring, thereby ensuring a tight fit with the exposed outer surface. The cylindrical sealing ring is achieved by setting an outer auxiliary ring outside the inner water-stop ring. The operator moves the outer auxiliary ring to move the inner water-stop ring along the outer surface of the pipeline, reducing the radial deformation of the inner water-stop ring. At the same time, the outer auxiliary ring has a tightening and limiting effect on the inner water-stop ring, further reducing the deformation of the inner water-stop ring. The annular sealing ring has a circular cross-section. Compared with the water-stop ring with a rectangular cross-section, it can roll forward on the outer surface of the pipeline without the need for an outward pulling force to move the water-stop ring, which can also reduce the deformation of the annular sealing ring. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the structure of the cylindrical sealing ring of the water-swellable rubber sealing ring in the embodiment, which is matched with the pipeline.

[0013] Figure 2 This is an exploded structural diagram of the cylindrical sealing ring of the water-swellable rubber sealing ring in the embodiment, which is fitted with the pipeline.

[0014] Figure 3 This is a top view of the cylindrical sealing ring of the water-swellable rubber sealing ring in the embodiment.

[0015] Figure 4 This is a schematic diagram of the cross-sectional structure of the cylindrical sealing ring of the water-swellable rubber sealing ring in the embodiment;

[0016] Figure 5 This is a schematic diagram of the structure of the annular sealing ring of the water-swellable rubber sealing ring in the embodiment, which is matched with the pipeline.

[0017] In the attached diagram, 1 represents a pipeline; 2 represents a cylindrical sealing ring; 201 represents an inner water-stop ring; 202 represents an outer auxiliary ring; 203 represents an anti-slip protrusion; and 3 represents a circular sealing ring. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0019] Specific implementation examples Figure 1 , 2 As shown in Figures 3, 4, and 5, a water-swellable rubber sealing ring is fitted onto pipe 1. The rubber sealing ring is either a cylindrical sealing ring 2 or an annular sealing ring 3. The cylindrical sealing ring 2 includes an inner water-stop ring 201 and an outer auxiliary ring 202. The annular sealing ring 3 has a circular cross-section.

[0020] like Figure 1 , 2 As shown in Figures 3 and 4, the upper surface of the inner ring water-stop ring 201 of the cylindrical sealing ring 2 is lower than the upper surface of the outer auxiliary ring 202, and the lower surface of the inner ring water-stop ring 201 is higher than the lower surface of the outer auxiliary ring 202.

[0021] like Figure 1 , 2 As shown in Figures 3 and 4, the outer auxiliary ring 202 extends to the inner ring waterstop ring 201 at the same height, and the thickness ratio of the inner ring waterstop ring 201 to the outer auxiliary ring 202 is 1:2 to 1:4.

[0022] like Figure 1 , 2 As shown in Figures 3 and 4, the outer surface of the outer auxiliary ring 202 is provided with anti-slip protrusions 203. The anti-slip protrusions 203 can prevent slippage during installation.

[0023] like Figure 5 As shown, the annular sealing ring 3 has a hollow structure. The hollow structure reduces the mass of the annular sealing ring 3, making it lighter.

[0024] Working principle: The cylindrical sealing ring 2 includes an inner water-stop ring 201 and an outer auxiliary ring 202. The inner water-stop ring 201 is used to waterproof the outer surface of the pipe 1. When installing the cylindrical sealing ring 2, the inner water-stop ring 201 is fitted onto the pipe 1. According to the on-site construction needs, the inner water-stop ring 201 is moved to the designated position. The worker pulls or drags the outer auxiliary ring 202, which simultaneously moves the inner water-stop ring 201 along the pipe 1. Not directly pulling the inner water-stop ring 201 can reduce the radial deformation of the inner water-stop ring 201. This ensures that the inner surface of the inner water-stop ring 201 fits tightly with the pipe 1. At the same time, the outer auxiliary ring 202 can also limit the inner water-stop ring 201 and reduce its deformation. Ordinary water-stop rings may tilt downwards from the inside to the outside during installation and use, and their surface is conical. In this case, water droplets will flow downwards along the water-stop ring from the inside to the outside. However, the outer auxiliary ring of this solution, together with the inner water-stop ring and the pipe, can form an arc-shaped groove space. The outer auxiliary ring can prevent water droplets from flowing to the outside of the inner water-stop ring and causing leakage.

[0025] The circular sealing ring 3 has a circular cross-section. This structure allows the circular sealing ring 3 to roll along the outer surface of the pipe 1 after being fitted onto the pipe 1. Ordinary water-stop rings need to be pulled to move, which can easily cause radial deformation of the water-stop ring. This results in the water-stop ring not fitting tightly to the outer surface of the pipe 1, leading to an unsatisfactory waterproofing effect. Compared with ordinary water-stop rings with rectangular cross-sections, this design can also reduce the deformation of the circular sealing ring 3, thereby ensuring a tight fit between the circular sealing ring 3 and the outer surface of the pipe 1, resulting in a better waterproofing effect.

[0026] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A rubber sealing ring which swells in the presence of water, fitted on a pipe (1), characterised in that: The rubber sealing ring is a cylindrical sealing ring (2) or a circular ring sealing ring (3), the cylindrical sealing ring (2) comprises an inner ring water stop ring (201) and an outer auxiliary ring (202) on the outer side; the circular ring sealing ring (3) has a circular cross section.

2. A water-swellable rubber sealing ring according to claim 1, characterized in that: The upper surface of the inner ring water stop ring (201) of the cylindrical sealing ring (2) is lower than the upper surface of the outer auxiliary ring (202), and the lower surface of the inner ring water stop ring (201) is higher than the lower surface of the outer auxiliary ring (202).

3. A water-swellable rubber sealing ring according to claim 2, characterized in that: The outer auxiliary ring (202) exceeds the height of the inner ring water stop ring (201) by the same height, and the thickness ratio of the inner ring water stop ring (201) to the outer auxiliary ring (202) is 1:2-1:

4.

4. A water-swellable rubber sealing ring according to claim 2, characterized in that: The outer surface of the outer auxiliary ring (202) is provided with anti-skid protrusions (203).

5. A water-swellable rubber seal ring according to claim 1, characterized in that: The circular ring sealing ring (3) has a hollow structure.

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