Deformation joint water leakage plugging device
By using a grouting ring and grouting pipe design in the expansion joint leakage plugging device, the problem of not being able to perform segmented grouting for polyurethane or epoxy resin grouting was solved, achieving a stable grouting process and uniform filling, thus improving waterproofing performance and construction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2026-04-03
AI Technical Summary
In existing technologies, segmented grouting cannot be implemented when polyurethane or epoxy resin is used for sealing, resulting in poor filling effect.
A leak-stopping device for expansion joints was designed, including a grouting ring and a grouting pipe. The inner wall of the grouting ring is threaded and connected to the grouting pipe. The grouting ring is located in the middle of the sealing plate and is equipped with a rotating interface, which allows the grouting pipe to be rotated to adjust the depth, realize segmented grouting, and form multiple barriers through the water-stop groove and PVC roll water-stop layer.
It achieves stable grouting channels, avoids grout leakage, ensures uniform coverage of grouting material, improves grouting filling effect and construction efficiency, and enhances waterproof performance.
Smart Images

Figure CN224078417U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of expansion joint sealing construction technology, specifically to a device for sealing leaks in expansion joints. Background Technology
[0002] The construction technology for sealing structural expansion joints is mainly divided into two methods: grouting and sealing, and installation of water collection boxes for drainage. Grouting usually uses polyurethane or epoxy resin grouting, which involves injecting polyurethane or epoxy resin grouting material into the structural expansion joint, allowing it to foam and expand, fill the expansion joint, and then cure, thereby achieving the purpose of stopping water.
[0003] According to Chinese Patent Application No. CN202222327608.8, an externally applied water-stop sealing construction structure for sealing structural expansion joints is disclosed. This structure includes a grouting sealing layer formed within the structural expansion joint, a PVC roll waterstop layer adhered to the concrete structural base surface via an adhesive layer, and a fixing component for secondary fixation of the PVC roll waterstop layer. Rectangular waterstop grooves are symmetrically formed on both sides of the structural expansion joint. Both sides of the adhesive layer and the PVC roll waterstop layer extend into the two rectangular waterstop grooves. A sealing layer is provided on the outer surface of the PVC roll waterstop layer. This invention has a simple structure, combining the grouting sealing layer with the externally applied PVC roll waterstop layer. It possesses excellent waterproofing, weather resistance, and chemical corrosion resistance, improving the deformation resistance during structural expansion joint sealing construction. It offers high sealing reliability, reduces the frequency of re-leakage, and is suitable for sealing structural expansion joints with large deformation amounts and high deformation frequencies.
[0004] Currently, there are still some shortcomings in the construction structure of external waterproof sealing for sealing structural deformation joints. For example, when polyurethane or epoxy resin is injected for sealing, it is necessary to inject once and then install the sealing device. It is impossible to carry out segmented grouting, resulting in poor filling effect. Utility Model Content
[0005] In view of the shortcomings of the prior art, this utility model provides a leakage plugging device for expansion joints, which solves the problems mentioned in the background art.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0007] A leak sealing device for expansion joints includes: a wall, an expansion joint provided on one side of the wall, a sealing plate provided on one side of the expansion joint, a PVC roll waterstop layer provided on one side of the sealing plate, and an adhesive layer provided on the bottom surface of the PVC roll waterstop layer; and a grouting assembly provided on one side of the sealing plate for injecting sealing grout.
[0008] Preferably, the grouting assembly includes: a grouting ring disposed on one side of the sealing plate, the inner circular wall of the grouting ring being provided with threads, and a grouting pipe being connected to the internal threads of the grouting ring.
[0009] Preferably, one end of the grouting pipe is provided with a rotating interface.
[0010] Preferably, the grouting ring is positioned in the middle of the sealing plate.
[0011] Preferably, water-stop grooves are symmetrically provided on both sides of the expansion joint, and the adhesive layer and the PVC roll water-stop layer extend into the interior of the water-stop grooves.
[0012] Preferably, two pressure plates are fixedly installed on both sides of the sealing plate, and an expansion bolt is provided on one side of the pressure plate.
[0013] In summary, the present invention has the following main advantages:
[0014] By setting up grouting pipes and threading the inner wall of the grouting ring, the threaded connection with the grouting pipe ensures that the grouting pipe will not loosen or fall off during grouting, maintaining a stable grouting channel and preventing grout leakage. The grouting ring is located in the middle of the sealing plate, allowing the grouting material to spread from the center outwards, effectively covering the entire sealing plate area and avoiding insufficient grouting at the edges. During grouting, a rotating interface is provided. When the grouting pipe is connected to the grouting pump, it can be rotated during grouting without separating the grouting pump from the grouting pipe for adjustment, improving construction efficiency. The grouting pipe can be rotated to adjust the depth of the grouting pipe in the expansion joint, thereby implementing segmented grouting and improving the filling effect of the grouting. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the sealing plate structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the disassembled grouting ring structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the planar structure of this utility model.
[0018] Attached reference numerals: 1. Wall; 2. Expansion joint; 3. Sealing plate; 4. Grouting ring; 5. Thread; 6. Grouting pipe; 7. Rotary joint; 8. Adhesive layer; 9. Waterstop groove; 10. PVC roll waterstop layer; 11. Pressure plate; 12. Expansion bolt. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] refer to Figure 1 , Figure 2 and Figure 3 A leak sealing device for expansion joints includes: a wall 1, an expansion joint 2 on one side of the wall 1, a sealing plate 3 on one side of the expansion joint 2, a PVC roll waterstop layer 10 on one side of the sealing plate 3, and an adhesive layer 8 on the bottom surface of the PVC roll waterstop layer 10; and a grouting assembly, which is located on one side of the sealing plate 3 and is used to inject sealing grout.
[0021] By setting the sealing plate 3, the wall 1, the sealing plate 3, the PVC roll waterstop layer 10 and the adhesive layer 8 together form a multi-layer waterproof barrier, which can effectively prevent water from penetrating into the wall through the expansion joint 2.
[0022] As a further embodiment of this utility model, the grouting assembly includes: a grouting ring 4, which is disposed on one side of the sealing plate 3, and the inner circular wall surface of the grouting ring 4 is provided with a thread 5, and the grouting ring 4 is internally threaded to a grouting pipe 6.
[0023] By setting up the grouting pipe 6 and the thread 5 on the inner wall of the grouting ring 4, the threaded connection with the grouting pipe 6 can ensure that the grouting pipe 6 will not loosen or fall off during the grouting process, maintain a stable grouting channel, and avoid grout leakage. During the grouting process, the grouting pipe 6 can be rotated to adjust the depth of the grouting pipe 6 in the deformation joint 2, thereby implementing segmented grouting and improving the filling effect of grouting.
[0024] As a further embodiment of this utility model, a rotating interface 7 is provided at one end of the grouting pipe 6;
[0025] By setting a rotating interface 7, when the grouting pipe 6 is connected to the grouting pump, the grouting pipe 6 can be rotated during the grouting process without having to separate the grouting pump from the grouting pipe 6 for adjustment, thus improving the construction effect.
[0026] As a further embodiment of this utility model, the grouting ring 4 is positioned in the middle of the sealing plate 3;
[0027] By setting up a grouting ring 4, which is located in the middle of the sealing plate 3, the grouting material spreads from the middle to the surrounding area, effectively covering the entire sealing plate 3 area and avoiding the problem of insufficient grouting in the edge area.
[0028] As a further embodiment of this utility model, water-stop grooves 9 are symmetrically provided on both sides of the expansion joint 2, and the adhesive layer 8 and the PVC roll water-stop layer 10 extend into the interior of the water-stop grooves 9.
[0029] By setting the water-stop groove 9, which provides additional sealing space, the adhesive layer 8 and the PVC roll water-stop layer 10 work together to effectively enhance waterproof performance, forming multiple barriers to prevent water penetration.
[0030] As a further embodiment of this utility model, two pressure plates 11 are fixedly installed on both sides of the sealing plate 3, and an expansion bolt 12 is provided on one side of the pressure plate 11.
[0031] By setting pressure plates 11, pressure plates 11 are installed on both sides of the sealing plate 3, which can evenly distribute external pressure, enhance the fixing effect, and prevent the sealing plate 3 from deforming or loosening due to unilateral force. The expansion bolts 12 are tightly connected with the wall 1 to provide strong anchoring force, so that the sealing plate 3 fits more tightly with the structural gap and prevents leakage.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A deformation joint water leakage plugging device, characterized in that, Include: wall (1), one side of the wall (1) is provided with deformation joint (2), one side of the deformation joint (2) is provided with sealing plate (3), one side of the sealing plate (3) is provided with PVC coiled waterproof belt layer (10), the bottom surface of the PVC coiled waterproof belt layer (10) is provided with adhesive layer (8); Grouting assembly, the grouting assembly is arranged on one side of the sealing plate (3), and is used for injecting sealing slurry; The grouting assembly comprises: Grouting ring (4), the grouting ring (4) is arranged on one side of the sealing plate (3), the inner circular wall surface of the grouting ring (4) is provided with screw thread (5), the grouting pipe (6) is connected with the grouting ring (4) inside screw thread.
2. The deformed joint water leakage plugging device according to claim 1, characterized in that, One end of the grouting pipe (6) is provided with a rotating joint (7).
3. The deformed joint water leakage plugging device according to claim 1, characterized in that, The grouting ring (4) is arranged at the middle position of the sealing plate (3).
4. The deformed seam water leakage plugging device according to claim 1, characterized in that, Two sides of the deformation joint (2) are symmetrically provided with water stop groove (9), the adhesive layer (8) and the PVC coiled waterproof belt layer (10) extend to the inside of the water stop groove (9).
5. The deformed seam water leakage plugging device according to claim 1, characterized in that, Two pressing plates (11) are fixedly installed on both sides of the sealing plate (3), one side of the pressing plate (11) is provided with expansion bolt (12).
Citation Information
Patent Citations
Externally-attached water-stop sealing construction structure for leaking stoppage of structural deformation joint
CN217896806U