Water guide sealing structure for assembly type building joint

Abstract

The invention belongs to the technical field of prefabricated building joint sealing, and particularly relates to a prefabricated building joint water guide sealing structure which comprises a mortar pouring layer, and a first water blocking plate used for separating the mortar pouring layer is arranged in the mortar pouring layer. An arc-shaped water guiding groove, a second water blocking plate located on the outer side of the arc-shaped water guiding groove and a triggering piece located in the arc-shaped water guiding groove are arranged on one side of the first water blocking plate; the water absorption felt covers the arc-shaped water guide groove, and when water seepage occurs, the water absorption felt filters impurities in water, so that the triggering piece is expanded by water to push the second water blocking plate to be opened for sealing the joint; the middle plate is connected with the arc-shaped water guide groove, a rubber pad and a pigment paper bag are fixed to the outer side of the middle plate, and the pigment paper bag is soaked in water and broken during water leakage. The three-layer sealing belt can be constructed, impurities in water are filtered through the water absorption felt, a flow blocking weir is prevented from being generated, expansion joints are compensated for the three-layer sealing belt, and therefore the sealing adaptability of the joints is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of prefabricated building joint sealing, and in particular relates to a water-conducting sealing structure for prefabricated building joints. Background Art

[0002] There are various ways to connect prefabricated shear walls, and they need to be selected comprehensively based on factors such as project requirements, seismic resistance level, and construction conditions. Among them, steel bars are inserted into the joints through pre-embedded metal sleeves and high-strength micro-expansion mortar is poured in. The confining effect and micro-expansion of the mortar are used to enhance the positive force between the steel bars and the inner side of the sleeve, thereby transferring the stress of the steel bars.

[0003] Prefabricated shear walls and mortar (or concrete) have different thermal expansion coefficients. Exposure to sunlight can easily lead to cracks and water seepage. To combine drainage and water blocking, structural waterproofing is used with waterproofing materials. For example, a Chinese invention, with publication number CN114232833B, describes a prefabricated building wall and prefabricated building. These walls incorporate seals, water channels, a water guide box, and sealing strips at the joints to seal the joints for waterproofing. This achieves double-layer water blocking and intermediate drainage by directing infiltrated water downward and using mortar, sealant, and sealing strips to block water on the outside of the water guide box. However, the following areas of improvement are still possible during use: The outer sealing strip expands and contracts significantly due to changes in external temperature, and rainwater will seep into the cracks, causing impurities to adhere to the water guide box with the rainwater. Once the impurities increase, a flow barrier will be formed, causing water accumulation, which may endanger the sealing of the joints.

[0004] The inner layer water-blocking structure has a different thermal expansion coefficient from the prefabricated shear wall, and there will be a certain expansion joint when it is cold. In addition, the water-blocking structure is difficult to compensate for the deformation of the expansion joint by itself, which is not conducive to improving the adaptability of the seal at the joint. Summary of the Invention

[0005] The purpose of the present invention is to provide a water-conducting sealing structure for prefabricated building joints, which can construct a three-layer sealing belt, use absorbent felt to filter impurities in the water, prevent the formation of flow-blocking weirs, and compensate for the expansion joints of the three-layer sealing belt to improve the adaptability of the seal at the joint.

[0006] The technical solutions adopted by the present invention are as follows: A water-conducting sealing structure for assembled building joints, comprising a mortar pouring layer, wherein the mortar pouring layer is provided with: a first water blocking plate for separating the mortar casting layer, wherein one side of the first water blocking plate is provided with an arc-shaped water guide groove, a second water blocking plate located outside the arc-shaped water guide groove, and a trigger located inside the arc-shaped water guide groove; A water-absorbing felt covering the arc-shaped water guide groove filters impurities in the water when water seeps in, causing the trigger to swell due to water, thereby pushing the second water-blocking plate to open, thereby sealing the joint; An intermediate plate is connected to the arc-shaped water guide groove, and a rubber pad and a paint paper bag are fixed on the outer side of the intermediate plate. When water leaks, the paint paper bag is soaked in water and breaks to release the paint, so as to color the leaking area.

[0007] As an optional solution, the absorbent felt is sewn with a water-drawing cotton thread connected to the trigger member, and a rubber sleeve is provided at the connection between the water-drawing cotton thread and the trigger member; When water seeps in, the water-attracting cotton thread absorbs the water on the absorbent felt to transfer the water to the triggering member.

[0008] As an optional solution, the edge of the water-absorbing felt is provided with an elastic rubber sheet, a traction plate, and a male hook in sequence, and a female hook adapted to the male hook is fixed on the side of the second water-blocking plate away from the first water-blocking plate; When the trigger member expands, the elastic rubber sheet is stretched to avoid tearing the water-absorbing felt.

[0009] As an optional solution, a folded tough plate is fixed on a side of the second water blocking plate away from the arc-shaped water guide groove, and the folded tough plate and the second water blocking plate form a concave enclosure; Among them, the concave enclosure is provided with a main auxiliary sealing gasket on the outside and a porous filling layer on the inside.

[0010] As an optional solution, the triggering member includes a telescopic tube located inside the arc-shaped water guide groove, a water-absorbing resin arranged inside the telescopic tube, and a water-permeable hole penetrating the telescopic tube; When water seeps in, the water-inducing cotton thread passes through the water-permeable hole, causing the water-absorbing resin to swell due to water, thereby pushing the telescopic tube to extend.

[0011] As an optional solution, a universal ball head and a hemispherical seat are provided between the telescopic tube and the arc-shaped water guide groove. When the telescopic tube is extended, the universal ball head is driven to deflect relative to the hemispherical seat.

[0012] As an optional solution, an arc-shaped rack is vertically fixed on the outer side of the first water-blocking plate, and a triangular plate spaced from the arc-shaped rack is fixed on the outer side of the folded tough plate; When the second water blocking plate is opened, it drives the triangular plate to cross the arc-shaped rack.

[0013] As an optional solution, first water-swelling rubber is fixed to both ends of the first water-blocking plate, and corner protectors connected to the first water-swelling rubber are fixed to both corners of the bottom of the first water-blocking plate.

[0014] As an optional solution, a second water-swelling rubber, a third water-swelling rubber and a fourth water-swelling rubber are provided on one side of the first water-blocking plate away from the arc-shaped water guide groove, and the two third water-swelling rubbers are respectively arranged in an arc shape on both sides of the second water-swelling rubber.

[0015] As an optional solution, a secondary auxiliary sealing gasket connected to the arc-shaped water guide groove is fixed at the bottom of the first water blocking plate. The secondary auxiliary sealing gasket has a middle opening and the hole is connected to a water receiving box. One side of the water receiving box is connected to a PVC pipe that passes through the mortar casting layer.

[0016] The technical effects achieved by the present invention are: Before pouring mortar, the present invention constructs a three-layer sealing tape, which blocks water in three layers in sequence. Even if a single layer of the sealing tape fails, the remaining part can still play a water-blocking role with high reliability. When water seeps, the water-absorbing felt separates the outer mortar and the three-layer sealing tape, can filter impurities in the water, prevent impurities from entering the three-layer sealing tape, prevent the formation of a flow-blocking weir, and make the internal water conduction smoother; the water-absorbing resin that expands after absorbing water has a certain elastic modulus, drives the telescopic tube to extend, and automatically pushes the second water-blocking plate to open for sealing the joint, instantly compensating the expansion joint for the three-layer sealing tape, without the need for manual seam repair.

[0017] The present invention passes the water-guiding cotton thread through the water-permeable hole. When water seeps, the water-guiding cotton thread absorbs water on the absorbent felt. Therefore, there is a humidity gradient between the wet water-guiding cotton thread and the water-absorbing resin, so as to transfer water to the water-absorbing resin. At this time, the water-absorbing resin expands due to water, which is convenient for triggering and will respond quickly, thereby improving the sealing sensitivity of the three-layer sealing belt. The water-guiding cotton thread can be forked and dispersed toward the surroundings, which can attract more water. It is also relatively loose and can maintain its complete shape when the arc-shaped water guide groove is opened.

[0018] The present invention alternately arranges three elastic rubber sheets and two absorbent felts to avoid the water-permeable holes, so that the water-guiding cotton thread has sufficient area to contact the absorbent felt. Once the two second water-blocking plates are opened to both sides, the male hook can be pulled by the female hook to stretch the elastic rubber sheet to avoid tearing the absorbent felt. The coverage area of ​​the absorbent felt can also be increased to always cover the opening of the arc-shaped water guide groove.

[0019] When a water leak occurs, the pigment paper bag of the present invention is soaked in water and bursts to release the pigment, so that the leaking area is colored and the location of water seepage in the inner mortar is promptly indicated, making it convenient for residents to identify the location of water seepage and to make accurate repairs. At the same time, the rubber pad can also be made of water-swelling rubber, which can expand when exposed to water after the pigment paper bag fails, thereby playing a certain temporary sealing role. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an exploded view of a water-conducting sealing structure for prefabricated building joints and a prefabricated shear wall in an embodiment of the present invention; Figure 2 This is a front view of the combined state of the water-absorbing felt and the water receiving box in an embodiment of the present invention; Figure 3 This is a partial top view of a water-conducting sealing structure for assembled building joints according to an embodiment of the present invention; Figure 4 1 is a top view of an arc-shaped water channel according to an embodiment of the present invention; Figure 5 is a top view of the first water blocking plate in an embodiment of the present invention; Figure 6 is a top view of an absorbent felt according to an embodiment of the present invention; Figure 7 This is a front view of the assembled state of the telescopic tube and the water diversion cotton thread in the embodiment of the present invention; Figure 8 is a front view of a telescopic tube in an embodiment of the present invention; Figure 9 It is a front view of the water receiving box in an embodiment of the present invention.

[0021] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Mortar casting layer; 2. First water-blocking plate; 201. First water-swelling rubber; 202. Corner guard; 203. Second water-swelling rubber; 204. Third water-swelling rubber; 205. Fourth water-swelling rubber; 3. Arc-shaped water guide trough; 4. Second water-blocking plate; 5. Water-absorbing felt; 6. Telescopic tube; 7. Water-absorbing resin; 8. Water-permeable hole; 9. Universal ball head; 10. Hemispherical seat; 11. Water-guiding cotton thread; 12. Rubber sleeve; 13. Elastic rubber sheet; 14. Traction plate; 15. Male hook; 16. Female hook; 17. Folding tough plate; 18. Primary and secondary sealing gaskets; 19. Porous filling layer; 20. Arc-shaped rack; 21. Triangular plate; 22. Middle plate; 23. Rubber pad; 24. Paint paper bag; 25. Secondary auxiliary sealing gasket; 26. Water collection box; 27. PVC pipe. DETAILED DESCRIPTION

[0022] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following examples. It should be understood that the following text is only used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0023] like Figures 1-9 As shown, a water-conducting sealing structure for assembled building joints is used. Figure 1Taking the prefabricated shear wall with central reinforcement as an example, grooves are cut on both sides of the joint and the first water blocking plate 2 is inserted. An arc-shaped water guide groove 3 and a second water blocking plate 4 located outside the arc-shaped water guide groove 3 are provided on one side of the first water blocking plate 2. Then, a formwork is built and concrete is poured to form a mortar pouring layer 1. The first water blocking plate 2 separates the mortar pouring layer 1 and forms a double-layer sealing belt with the second water blocking plate 4. Even if the outer layer of mortar leaks due to damage or other reasons, the arc-shaped water guide groove 3 can be used to drain the water vertically to prevent the water from penetrating the inner layer of mortar, and finally the water is drained outward.

[0024] Among them, the first water blocking plate 2 and the second water blocking plate 4 can be made of any one of plastic plates and aluminum alloy plates, which can block water, and the arc-shaped water guide groove 3 can be made of aluminum alloy or stainless steel with a certain degree of flexibility, which is convenient for on-site bending to move the second water blocking plate 4 to the wall.

[0025] Refer to the attached Figure 2 、 Figure 3 and Figure 9 In order to adhere tightly to the wall, first water-swelling rubber 201 is bonded to both ends of the first water-blocking plate 2 of this embodiment. The U-shaped first water-swelling rubber 201 fills the gap between the first water-blocking plate 2 and the prefabricated shear wall to improve the sealing performance. In addition, corner protectors 202 bonded to the first water-swelling rubber 201 are fixed to the two corners of the bottom of the first water-blocking plate 2. The corner protectors 202 are used to ground the first water-blocking plate 2 when inserted to prevent the two corners from being damaged. In this way, once water seepage occurs, the first water-swelling rubber 201 and the corner protectors 202, which are made of the same material, will both expand due to water, and the more they expand, the tighter the seal will be, which is beneficial to preventing water seepage from the inner layer of mortar.

[0026] Taking the PZ400 water-swelling rubber as an example, its expansion ratio when first exposed to water can reach 4 times, and it has good rubber elasticity and extensibility. During installation, it can be pressed by hand or a crowbar to facilitate insertion into the joint, which is relatively convenient. If a sticking feeling is caused by friction, lubricating oil can be applied to the surface of the water-swelling rubber to reduce friction without reducing its own waterproofness.

[0027] Refer to the attached Figure 1 、 Figure 3 and Figure 5 To form the third layer of sealing tape, in this embodiment, a second water-swellable rubber member 203, a third water-swellable rubber member 204, and a fourth water-swellable rubber member 205 are disposed on the side of the first water-blocking plate 2 away from the arc-shaped water guide groove 3. A water seepage gap is left between the three members. Once water seepage occurs, water can contact the three members along the water seepage gap, causing all three members to expand due to the water, tightly filling the edge gap of the double-layer sealing tape and exerting the final stage of water blocking. Furthermore, because the two third water-swellable rubber members 204 are disposed in an arc shape on either side of the second water-swellable rubber member 203, they can easily extend toward both sides of the joint when they expand, quickly adhering to the wall and completing the seal.

[0028] The present invention constructs three layers of sealing tape before pouring mortar, and blocks water in three layers in sequence. Even if a single layer of the sealing tape fails, the remaining part can still play a water-blocking role, with high reliability. Moreover, the installation can be carried out by applying lubricating oil, and the installation steps are simple without obvious obstruction. In addition, based on the characteristic of water-swelling rubber that expands immediately when exposed to water, the three layers of sealing tape can react quickly and passively at the joints and seal in time.

[0029] Whether it is external rainwater, ice and snow, fog water, domestic sewage leakage, etc., they all contain certain impurities. In addition, the seepage water flowing through the mortar will also carry away some impurities such as fine sand particles. Once the impurities increase, a flow weir will be formed in the arc-shaped water guide groove 3, causing water accumulation, which may endanger the sealing of the joints.

[0030] Refer to the attached Figure 2 、 Figure 3 and Figure 6 In this embodiment, when the double-layer sealing tape is installed, the opening of the arc-shaped water guide groove 3 is covered with a water-absorbing felt 5. Here, the water-absorbing felt 5 is large enough to radiate the entire joint. When water seeps, the water-absorbing felt 5 separates the outer mortar and the three-layer sealing tape, can filter impurities in the water, prevent impurities from entering the three-layer sealing tape, prevent the formation of a flow-blocking weir, and make the internal water guide smoother.

[0031] Refer to the attached Figure 3 、 Figure 4 and Figure 8 The three-layer sealing tape has a different thermal expansion coefficient from the prefabricated shear wall, resulting in a certain expansion gap when exposed to cold. Furthermore, the three-layer sealing tape cannot compensate for the deformation of the expansion gap on its own. Therefore, in order to quickly and timely compensate for the expansion gap, this embodiment further includes a telescopic tube 6, a water-absorbing resin 7 disposed inside the telescopic tube 6, and a water-permeable hole 8 penetrating the telescopic tube 6, inside the arc-shaped water guide trough 3. Once water seepage occurs, water enters the telescopic tube 6 through the water-permeable hole 8. As the water-absorbing resin 7 expands after absorbing water, it has a certain elastic modulus, driving the telescopic tube 6 to extend and automatically pushing the second water-blocking plate 4 to open. As a result, the bend of the second water-blocking plate 4 adheres to the wall at the joint, sealing the joint and instantly compensating for the expansion gap of the three-layer sealing tape without the need for manual seam repair.

[0032] Refer to the attached Figure 3 、 Figure 7 and Figure 8 In order to facilitate the timely contact of water seepage with the water-absorbing resin 7, in this embodiment, a water-drawing cotton thread 11 is sewn on the water-absorbing felt 5. The water-drawing cotton thread 11 passes through the water-permeable hole 8. When water seeps, the water-drawing cotton thread 11 absorbs water on the water-absorbing felt 5. Therefore, there is a humidity gradient between the wet water-drawing cotton thread 11 and the water-absorbing resin 7, so that water is transferred to the water-absorbing resin 7. At this time, the water-absorbing resin 7 expands due to water, thereby pushing the telescopic tube 6 to extend. A rubber sleeve 12 is provided at the connection between the water-drawing cotton thread 11 and the telescopic tube 6. The rubber sleeve 12 is used to pull the water-drawing cotton thread 11 in a ring shape to prevent it from falling off. Further, see Figure 7 The water-guiding cotton thread 11 can be forked and dispersed around, which can attract more water. It is also relatively loose and can maintain a complete shape when the arc-shaped water guide groove 3 is opened.

[0033] Refer to the attached Figure 7 and Figure 8 In order to adapt to the opening state of the arc-shaped water guide groove 3, a universal ball head 9 and a hemispherical seat 10 are provided between the telescopic tube 6 and the arc-shaped water guide groove 3. When the telescopic tube 6 is extended, the universal ball head 9 is driven to deflect relative to the hemispherical seat 10. There is a certain angular deflection margin to avoid the connection between the telescopic tube 6 and the arc-shaped water guide groove 3 from breaking, making it convenient for the telescopic tube 6 to be firmly set inside the arc-shaped water guide groove 3; As an optional embodiment, during prefabrication in the factory, a telescopic tube 6 is installed vertically every 5 cm in the arc-shaped water guide trough 3. For example, the hemispherical seat 10 is welded or bonded to the inner wall of the arc-shaped water guide trough 3, and the universal ball head 9 is welded to both ends of the telescopic tube 6.

[0034] Refer to the attached Figure 3 and Figure 6 As an optional embodiment, the water-absorbing felt 5 is provided with two pieces, and an elastic rubber sheet 13, a traction plate 14, and a male hook 15 are sequentially arranged on the edge of the water-absorbing felt 5. Among them, the three elastic rubber sheets 13 are alternately arranged with the two water-absorbing felts 5 to avoid the water-permeable holes 8, so that the water-guiding cotton thread 11 has enough area to contact the water-absorbing felt 5. At the same time, a female hook 16 adapted to the male hook 15 is welded on the side of the second water-blocking plate 4 away from the first water-blocking plate 2. Once the two second water-blocking plates 4 are opened to both sides, the male hook 15 can be pulled by the female hook 16 to stretch the elastic rubber sheet 13 to avoid tearing the water-absorbing felt 5. It can also increase the coverage area of ​​the water-absorbing felt 5 and always cover the opening of the arc-shaped water guide groove 3.

[0035] Refer to the attached Figure 3 and Figure 4 Since there is a certain gap between the first water blocking plate 2 and the second water blocking plate 4, in this embodiment, a folded flexible plate 17 is welded on the side of the second water blocking plate 4 away from the arc-shaped water guide groove 3. The folded flexible plate 17 is made of the same material as the second water blocking plate 4. At this time, the folded flexible plate 17 and the second water blocking plate 4 form a concave enclosure. Therefore, when the second water blocking plate 4 is opened, the folded flexible plate 17 slides along the surface of the first water blocking plate 2, providing a certain degree of support. Among them, the main auxiliary sealing gasket 18 is bonded to the outside of the concave enclosure, which is used to connect the wall inside the joint to increase the sealing performance. The main auxiliary sealing gasket 18 can also be made of water-swelling rubber, which can swell when encountering water seepage to further seal. At the same time, a porous filling layer 19 is set inside the concave enclosure, such as polyurethane foam, sound-absorbing cotton, mineral wool, or any one or more of them, to fill the concave enclosure, enhance the structural strength, absorb wave energy, and improve the sound insulation performance at the joint.

[0036] Refer to the attached Figure 3 、 Figure 4 and Figure 5 In this embodiment, an arc-shaped rack 20 is vertically welded to the outside of the first water-blocking plate 2, and a triangular plate 21 is welded to the outside of the folded tough plate 17, spaced apart from the arc-shaped rack 20. Since the side of the arc-shaped rack 20 facing away from the arc-shaped water guide 3 is an arc surface, when the second water-blocking plate 4 is opened, it can drive the triangular plate 21 to slide along the arc surface, crossing the arc-shaped rack 20, so that the horizontal surface of the arc-shaped rack 20 supports the triangular plate 21, thereby limiting the position of the concave enclosure and preventing the concave enclosure from retracting after being attached to the wall at the joint.

[0037] Refer to the attached Figure 1 、 Figure 3 and Figure 4 In this embodiment, an intermediate plate 22 is welded between the first water-blocking plate 2 and the arc-shaped water guide groove 3. Since a rubber pad 23 and a paint paper bag 24 are bonded to the outside of the intermediate plate 22, the concave enclosure is further filled, and the paint paper bag 24 has paint built in. When there is a water leak, the paint paper bag 24 is soaked in water and ruptures to release the paint, so that the leaking area is colored, and the location of the water seepage in the inner mortar is timely indicated, which is convenient for residents to clearly identify the water seepage location and accurately repair it. At the same time, the rubber pad 23 can also be made of water-swelling rubber, which can expand under water after the paint paper bag 24 fails, and play a certain temporary sealing role.

[0038] Refer to the attached Figure 2 、 Figure 3 and Figure 9 In this embodiment, before the first water blocking plate 2 is inserted, a water receiving box 26 is first fixed to the joint with screws. The top opening of the water receiving box 26 is bonded to a secondary auxiliary sealing gasket 25 with a central opening, and one side opening is connected to a PVC pipe 27. After the first water blocking plate 2 is installed, its bottom is bonded to the secondary auxiliary sealing gasket 25, and the arc-shaped water guide groove 3 is connected to the hole of the secondary auxiliary sealing gasket 25. After the arc-shaped water guide groove 3 collects water, it is guided along the secondary auxiliary sealing gasket 25, the water receiving box 26, and the PVC pipe 27 to flow out of the joint. After the mortar is poured, the PVC pipe 27 is passed through the mortar pouring layer 1 to prevent blockage. The water receiving box 26 can also be made of PVC material, which can effectively prevent rust when conducting water. In addition, the material is light and easy to use, saving time and effort during installation.

[0039] Due to the occurrence of water seepage, rust may occur locally in the water-conducting sealing structure. To prevent such rust, the telescopic tube 6, universal ball head 9, hemispherical seat 10, traction plate 14, male hook 15, female hook 16, arc-shaped rack 20, triangular plate 21, intermediate plate 22, and water receiving box 26 can all be made of stainless steel, which can maintain its own rigidity for a long time even in a humid environment.

[0040] The working principle of the present invention is as follows: when installing, first fix the water box 26 with screws at the joint, adhere the auxiliary auxiliary sealing gasket 25 with a middle opening to the top opening of the water box 26, connect one side opening to the PVC pipe 27, and then insert three layers of sealing tape.

[0041] When water seeps, the water on the absorbent felt 5 is absorbed by the water-guiding cotton thread 11 passing through the water-permeable hole 8. Therefore, there is a humidity gradient between the wet water-guiding cotton thread 11 and the water-absorbing resin 7 to transfer water to the water-absorbing resin 7. At this time, the water-absorbing resin 7 expands due to water to push the telescopic tube 6 to extend. A rubber sleeve 12 is provided at the connection between the water-guiding cotton thread 11 and the telescopic tube 6. The rubber sleeve 12 is used to pull the water-guiding cotton thread 11 in a ring shape to prevent it from falling off. The absorbent felt 5 is used to separate the outer mortar and the three-layer sealing belt, which can filter impurities in the water and prevent impurities from entering the three-layer sealing belt. It can prevent the formation of a flow-blocking weir and make the internal water conduction smoother.

[0042] At the same time, the three-layer sealing tape blocks water in three layers in sequence. Even if a single layer of the sealing tape fails, the remaining part can still play a water-blocking role with high reliability. It can be installed by applying lubricating oil. The installation steps are simple and there is no obvious blockage. In addition, based on the characteristic of water-swelling rubber that expands immediately when exposed to water, the three-layer sealing tape can respond quickly and passively at the joints and seal in time.

[0043] In addition, the water-absorbing felt 5 is provided with two pieces, and an elastic rubber sheet 13, a traction plate 14, and a male hook 15 are sequentially arranged on the edge of the water-absorbing felt 5, wherein the three elastic rubber sheets 13 are alternately arranged with the two water-absorbing felts 5 to avoid the water-permeable holes 8, so that the water-guiding cotton thread 11 has enough area to contact the water-absorbing felt 5. At the same time, a female hook 16 adapted to the male hook 15 is welded on the side of the second water-blocking plate 4 away from the first water-blocking plate 2. Once the two second water-blocking plates 4 are opened to both sides, the male hook 15 can be pulled by the female hook 16 to stretch the elastic rubber sheet 13 to avoid tearing the water-absorbing felt 5, and the coverage area of ​​the water-absorbing felt 5 can also be increased to always cover the opening of the arc-shaped water guide groove 3.

[0044] When a water leak occurs, the pigment paper bag 24 is soaked in water and ruptured to release the pigment, which stains the leaking area and promptly indicates the location of water seepage in the inner mortar, making it convenient for residents to clearly identify the water seepage location and accurately repair it.

[0045] The foregoing merely represents optional embodiments of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A water-conducting sealing structure for assembled building joints, comprising a mortar pouring layer (1), characterized in that: The mortar pouring layer (1) is provided with: a first water blocking plate (2) for separating the mortar casting layer (1), wherein one side of the first water blocking plate (2) is provided with an arc-shaped water guide groove (3), a second water blocking plate (4) located outside the arc-shaped water guide groove (3), and a triggering member located inside the arc-shaped water guide groove (3); A water-absorbing felt (5) covering the arc-shaped water guide groove (3) filters impurities in the water when water seeps in, causing the triggering member to swell due to water, thereby pushing the second water-blocking plate (4) to open, thereby sealing the joint; An intermediate plate (22) connected to the arc-shaped water guide groove (3) has a rubber pad (23) and a pigment paper bag (24) fixed on the outside of the intermediate plate (22). When water leaks, the pigment paper bag (24) is soaked in water and ruptures to release the pigment, thereby coloring the leaking area.

2. The water-conducting sealing structure for prefabricated building joints according to claim 1, characterized in that: The absorbent felt (5) is sewn with a water-guiding cotton thread (11) connected to the trigger member, and a rubber sleeve (12) is provided at the connection between the water-guiding cotton thread (11) and the trigger member; When water seeps in, the water-drawing cotton thread (11) absorbs the water on the absorbent felt (5) to transfer the water to the triggering member.

3. The water-conducting sealing structure for prefabricated building joints according to claim 1, characterized in that: The edge of the water-absorbing felt (5) is provided with an elastic rubber sheet (13), a traction plate (14), and a male hook (15) in sequence, and a female hook (16) adapted to the male hook (15) is fixed on the side of the second water-blocking plate (4) away from the first water-blocking plate (2); When the triggering member expands, the elastic rubber sheet (13) is stretched to avoid tearing the water-absorbing felt (5).

4. The water-conducting sealing structure for prefabricated building joints according to claim 1, characterized in that: A folded pliable plate (17) is fixed on a side of the second water blocking plate (4) away from the arc-shaped water guide groove (3), and the folded pliable plate (17) and the second water blocking plate (4) form a concave enclosure; Wherein, a main auxiliary sealing pad (18) is provided on the outside of the concave enclosure, and a porous filling layer (19) is provided on the inside.

5. The water-conducting sealing structure for prefabricated building joints according to claim 2, characterized in that: The triggering member comprises a telescopic tube (6) located inside the arc-shaped water guide groove (3), a water-absorbing resin (7) arranged inside the telescopic tube (6), and a water-permeable hole (8) penetrating the telescopic tube (6); When water seeps in, the water-inducing cotton thread (11) passes through the water-permeable hole (8), causing the water-absorbing resin (7) to swell due to water, thereby pushing the telescopic tube (6) to extend.

6. The water-conducting sealing structure for prefabricated building joints according to claim 5, characterized in that: A universal ball head (9) and a hemispherical seat (10) are provided between the telescopic tube (6) and the arc-shaped water guide groove (3). When the telescopic tube (6) is extended, the universal ball head (9) is driven to deflect relative to the hemispherical seat (10).

7. The water-conducting sealing structure for prefabricated building joints according to claim 4, characterized in that: An arc-shaped rack (20) is vertically fixed to the outside of the first water-blocking plate (2), and a triangular plate (21) spaced from the arc-shaped rack (20) is fixed to the outside of the folded tough plate (17); When the second water blocking plate (4) is opened, it drives the triangular plate (21) to cross the arc-shaped rack (20).

8. The water-conducting sealing structure for prefabricated building joints according to claim 1, characterized in that: Both ends of the first water-blocking plate (2) are fixed with first water-swelling rubber (201), and both corners of the bottom of the first water-blocking plate (2) are fixed with corner guards (202) connected to the first water-swelling rubber (201).

9. The water-conducting sealing structure for prefabricated building joints according to claim 1, characterized in that: A second water-swelling rubber (203), a third water-swelling rubber (204), and a fourth water-swelling rubber (205) are provided on a side of the first water-blocking plate (2) away from the arc-shaped water guide groove (3), and the two third water-swelling rubbers (204) are respectively provided in an arc shape on both sides of the second water-swelling rubber (203).

10. The water-conducting sealing structure for prefabricated building joints according to claim 8, characterized in that: A secondary auxiliary sealing gasket (25) connected to the arc-shaped water guide groove (3) is also fixed to the bottom of the first water blocking plate (2). The secondary auxiliary sealing gasket (25) is in the shape of a central opening, and the hole is connected to a water receiving box (26). One side of the water receiving box (26) is connected to a PVC pipe (27) that passes through the mortar casting layer (1).

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