Water stop strip capable of enabling pipe piece to swell when encountering water

Abstract

The waterstop strip comprises a waterstop strip body, protruding strips are fixed to the two sides of the top end of the waterstop strip body and the two sides of the bottom end of the waterstop strip body, a plurality of water inlet holes are formed in the middle of the top end of the waterstop strip body and the middle of the bottom end of the waterstop strip body, and a plurality of clamping nails are fixed to the two sides of the waterstop strip body. A barb is fixed to the middle of the clamping nail, buffering cavities are formed in the two sides in the water stop strip body, a reinforcing strip is arranged in the middle in the water stop strip body, two expansion cavities are formed between the reinforcing strip and the water stop strip body, each expansion cavity is divided into a plurality of expansion chambers through flexible connecting plates, and each expansion chamber is filled with expansion particles. The protruding strips and the sawtooth patterns are arranged, so that the bonding strength and bonding force between the water stop strip and the pipe piece are increased, and the water stop strip is effectively prevented from falling off in the construction or use process; due to the arrangement of the two expansion cavities, expansion in two directions can be achieved when the water stop strip is expanded when encountering water, extrusion towards one side is avoided, and the sealing effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of waterstop strip technology, specifically a waterstop strip that expands when it comes into contact with water in a pipe segment. Background Technology

[0002] Pipeline segment waterstops are a commonly used sealing material in building construction, primarily used at pipe connections and cracks in cement structures. They provide waterproofing, leak prevention, and thermal insulation. Pipeline segment waterstops are typically made of materials such as foamed polyethylene or polyurethane, which offer excellent sealing and thermal insulation properties.

[0003] However, traditional segment sealing strips have several drawbacks:

[0004] (1) Its bonding interface with the pipe segment is planar, which is prone to local detachment due to construction errors;

[0005] (2) The expansion space is limited. When the waterstop strip expands as a whole, it is easy to be squeezed to one side, thus affecting the sealing effect. Utility Model Content

[0006] The purpose of this invention is to provide a water-stop strip that expands when the pipe segment comes into contact with water, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a water-swellable strip for pipe segments, comprising a water-swellable strip body, with protruding strips fixed on both sides of the top and bottom of the water-swellable strip body, multiple water inlet holes opened in the middle of the top and bottom of the water-swellable strip body, multiple clips fixed on both sides of the water-swellable strip body, with barbs fixed in the middle of the clips, buffer cavities opened on both sides of the water-swellable strip body, a reinforcing strip provided in the middle of the water-swellable strip body, two expansion cavities opened between the reinforcing strip and the water-swellable strip body, the expansion cavities being divided into multiple expansion chambers by a flexible connecting plate, each expansion chamber being filled with expansion particles.

[0008] The design incorporates two expansion chambers, allowing the waterstop strip to expand in both directions when fully expanded. When compressed towards the center, the reinforcing strip provides a counterforce, preventing the expansion direction from shifting and avoiding unilateral compression that could compromise the sealing effect. The buffer chamber acts as a buffer against expansion, preventing prolonged expansion from damaging the structural strength of the waterstop strip and avoiding cracking or breakage. The clips feature a barbed structure in the center, allowing for precise insertion into the pre-drilled holes in the pipe segment using specialized tools during construction, thus preventing displacement of the waterstop strip.

[0009] Preferably, the buffer cavity is S-shaped, and a support grid for supporting the buffer cavity is attached inside the buffer cavity; the S-shaped buffer cavity can provide a buffering effect when the expansion cavity expands, and the support grid supports the buffer cavity and improves the stability of the buffer cavity.

[0010] Preferably, the water inlet is funnel-shaped and connected to the expansion chamber. The funnel-shaped design can increase the water inlet area, accelerate the water flow speed, and allow water to enter the expansion chamber more quickly, thereby accelerating the expansion speed of the water-stop strip and improving the water-stopping efficiency.

[0011] Preferably, the reinforcing strip is made of hard rubber, and buffer grooves are provided at both the top and bottom of the reinforcing strip. Hard rubber has high strength and wear resistance, which can increase the structural strength of the waterstop strip body and extend its service life. The buffer grooves play a buffering role when the expansion cavity expands.

[0012] Preferably, the raised strip is trapezoidal, and the depth of the serration is 0.1-0.2 mm. The trapezoidal design of the raised strip increases the contact area between the raised strip and the pipe segment, improves the bonding strength, and prevents the waterstop strip from falling off; the serration increases the surface roughness of the raised strip, further improving the bonding force between the waterstop strip and the pipe segment.

[0013] Preferably, the expansion cavity is arc-shaped, which can better adapt to the curved surface of the tube segment and improve the sealing effect; and the two expansion cavities are symmetrically reinforced with strips to ensure that the waterstop strip is subjected to uniform force during expansion, avoiding squeezing to one side and affecting the sealing effect.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By incorporating raised strips and serrated patterns, the bonding strength and adhesion between the waterstop strip and the pipe segment are increased, effectively preventing the waterstop strip from detaching during construction or use. The two expansion cavities allow the waterstop strip to expand in two directions when exposed to water, avoiding unilateral compression and ensuring a good seal. Simultaneously, the reinforcing strip enhances the structural strength of the waterstop strip and extends its service life. The buffer cavity and supporting mesh buffer the expansion, preventing damage to the structural strength of the waterstop strip body from prolonged expansion, further ensuring its reliability and durability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a side cross-sectional view of the present invention;

[0018] Figure 3 This is a schematic diagram of the expansion cavity of this utility model;

[0019] Figure 4 This is a schematic diagram of the reinforcing strip of this utility model;

[0020] Figure 5 This is a cross-sectional view of the buffer cavity of this utility model.

[0021] In the diagram: 1. Waterstop strip body; 2. Raised strip; 3. Reinforcing strip; 4. Expansion cavity; 5. Buffer cavity; 6. Clip; 7. Barb; 8. Water inlet hole; 9. Serrated pattern; 10. Flexible connecting plate; 11. Expansion particles; 12. Buffer groove; 13. Support grid. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] Please see Figure 1-5 This utility model provides a water-swellable water-stop strip for pipe segments, including a water-stop strip body 1. Both sides of the top and bottom of the water-stop strip body 1 are fixed with protruding strips 2. Multiple water inlet holes 8 are opened in the middle of the top and bottom of the water-stop strip body 1. Multiple clips 6 are fixed on both sides of the water-stop strip body 1, and a barb 7 is fixed in the middle of the clips 6. Buffer cavities 5 are opened on both sides inside the water-stop strip body 1. A reinforcing strip 3 is provided in the middle of the water-stop strip body 1. Two expansion cavities 4 are opened between the reinforcing strip 3 and the water-stop strip body 1. The expansion cavities 4 are divided into multiple expansion chambers by a flexible connecting plate 10, and each expansion chamber is filled with expansion particles 11.

[0024] Specifically, the two expansion chambers 4 allow the waterstop strip to expand in both directions when it expands as a whole. When compressed towards the center, the reinforcing strip 3 provides a counterforce, preventing the expansion direction of the expansion chambers 4 from shifting and avoiding unilateral compression that could affect the sealing effect. The buffer chamber 5 buffers the expansion, preventing damage to the structural strength of the waterstop strip body 1 from prolonged expansion and avoiding cracking or breakage. The retaining clips 6 have barbs 7 in the middle; during construction, a special tool is used to press the retaining clips 6 into the pre-drilled holes in the pipe segment to prevent the waterstop strip from shifting. Furthermore, the design of multiple expansion chambers allows for different expansion effects in each chamber depending on the water inlet area, achieving a tight fit with the pipe segment.

[0025] The buffer cavity 5 is S-shaped, and a support grid 13 for supporting the buffer cavity 5 is attached inside the buffer cavity 5.

[0026] Specifically, the "S"-shaped buffer cavity 5 can provide a buffering effect when the expansion cavity 4 expands, and the support grid 13 supports the buffer cavity 5, improving the stability of the buffer cavity 5.

[0027] The water inlet 8 is funnel-shaped and is connected to the expansion chamber 4.

[0028] Specifically, the funnel-shaped design increases the water inlet area and accelerates the water flow, allowing water to enter the expansion chamber 4 more quickly, thereby accelerating the expansion speed of the water-stop strip and improving the water-stopping efficiency.

[0029] The reinforcing strip 3 is made of hard rubber, and buffer grooves 12 are provided at both the top and bottom of the reinforcing strip 3.

[0030] Specifically, hard rubber has high strength and wear resistance, which can increase the structural strength of the waterstop strip body 1 and extend its service life. The buffer groove 12 is set to buffer the expansion cavity 4 when it expands.

[0031] The raised strip 2 is trapezoidal, and the serrated pattern 9 has a tooth depth of 0.1-0.2mm.

[0032] Specifically, the raised strip 2 is trapezoidal. The trapezoidal design can increase the contact area between the raised strip 2 and the pipe segment, improve the bonding strength, and prevent the waterstop strip from falling off. The serrated pattern 9 can increase the surface roughness of the raised strip 2, further improving the bonding force between the waterstop strip and the pipe segment.

[0033] The expansion cavity 4 is arc-shaped, and the two expansion cavities 4 are symmetrically reinforced with reinforcing strips 3.

[0034] Specifically, the arc-shaped expansion cavity 4 can better adapt to the curved surface of the pipe segment and improve the sealing effect; the two expansion cavities 4 are symmetrically reinforced with reinforcing strips 3 to ensure that the waterstop strip is subjected to uniform force during expansion and avoids squeezing to one side, which would affect the sealing effect.

[0035] In practical use, construction workers place the waterstop strip body 1 into the pre-drilled hole in the pipe segment and press the retaining pin 6 into the hole using a special tool. Because the retaining pin 6 has a barb 7 structure in the middle, the waterstop strip body 1 is tightly connected to the pipe segment, preventing displacement of the waterstop strip during construction. When water is encountered, it quickly enters the expansion chamber 4 through the inlet hole 8. The expansion particles 11 expand rapidly upon contact with water, pushing the flexible connecting plate 10, causing multiple expansion chambers within the expansion chamber 4 to expand simultaneously. Because the expansion chamber 4 is arc-shaped and symmetrically reinforced with reinforcing strips 3, the waterstop strip body 1 can be evenly stressed during expansion, avoiding unilateral compression and ensuring a sealing effect. Simultaneously, the reinforcing strips 3 improve the structural strength of the waterstop strip and extend its service life. During expansion, the buffer chamber 5 acts as a buffer, preventing damage to the structural strength of the waterstop strip body 1 from prolonged expansion, further ensuring the reliability and durability of the waterstop strip. The design of raised strip 2 and serrated pattern 9 increases the bonding strength and adhesion between the waterstop strip and the pipe segment, effectively preventing the waterstop strip from falling off during construction or use.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water-swelling joint strip for a segment, comprising a joint strip body (1), characterized in that, The both sides of the top end and the bottom end of the water stop strip body (1) are fixed with protruding strips (2), the middle part of the top end and the bottom end of the water stop strip body (1) are provided with a plurality of water inlet holes (8), the both sides of the water stop strip body (1) are fixed with a plurality of clamping nails (6), the middle part of the clamping nail (6) is fixed with an inverted hook (7), the both sides of the water stop strip body (1) are provided with buffer cavities (5), the middle part of the water stop strip body (1) is provided with a reinforcing strip (3), two expansion cavities (4) are arranged between the reinforcing strip (3) and the water stop strip body (1), the expansion cavity (4) is divided into a plurality of expansion chambers by a flexible connecting plate (10), and each expansion chamber is filled with expansion particles (11).

2. A water-swelling joint sealing strip according to claim 1, characterized in that: The buffer cavity (5) is "S" shaped, and a supporting grid (13) for supporting the buffer cavity (5) is attached in the buffer cavity (5).

3. A water-swelling sealing strip for a pipe joint according to claim 1, characterized in that: The water inlet hole (8) is funnel-shaped, and the water inlet hole (8) is communicated with the expansion cavity (4).

4. A water-swelling sealing strip for a pipe joint according to claim 1, characterized in that: The reinforcing strip (3) is made of hard rubber, and the top end and the bottom end of the reinforcing strip (3) are provided with buffer grooves (12).

5. A water-swelling sealing strip for a pipe joint according to claim 1, wherein: The protruding strip (2) is trapezoidal, and the sawtooth (9) has a tooth depth of 0.1-0.2mm.

6. A water-swellable sealing strip for a pipe joint according to claim 1, characterized in that: The expansion cavity (4) is arc-shaped, and the two expansion cavities (4) are symmetrically arranged on the reinforcing strip (3).

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