Self-adhesive slow expansion water stop strip

Abstract

The invention discloses a self-adhesive slow expansion water stop strip, which relates to the technical field of waterproofing of building construction and comprises a mounting pipe frame, an expansion mechanism capable of repeatedly expanding for multiple times is arranged on the inner wall of the mounting pipe frame, and a sticking mechanism capable of being stuck in a gap of a building wall is mounted on the outer wall of the mounting pipe frame. Connecting mechanisms capable of splicing and extending the mounting pipe frame are arranged at the two ends of the mounting pipe frame, high polymer materials, inorganic water absorption expansion materials and chemical auxiliaries of the expansion water stop strip are stored in a separated mode, and when water exists, the chemical auxiliaries in the mounting pipe frame enter storage strips for storing the high polymer materials and the inorganic water absorption expansion materials; water reacts with the high polymer material, the inorganic water absorption expansion material and the chemical additive, so that the material storage strip begins to expand and can be repeatedly expanded for multiple times, and after expansion is finished, the chemical additive remaining in the material storage strip can still enable the water stop strip to play a role in expansion, so that the reliability of the water stop strip in the long-term repeated expansion use process is improved.

Description

Technical Field

[0001] The invention relates to the technical field of waterproofing in building construction, in particular to a self-adhesive slow-expanding waterstop strip. Background Art

[0002] Putty-type waterstop strips have the characteristics of good weather resistance, aging resistance, anti-seepage and leakage prevention, and corrosion resistance. Its main components include polymer materials, inorganic water-absorbing and swelling materials, and rubber combined with a variety of chemical additives. Through the scientific proportioning and precision processing of these materials, putty-type waterstop strips can expand rapidly and fill gaps when encountering water, effectively preventing water penetration. It is suitable for various concrete projects, such as tunnels, sewage treatment projects, and subways.

[0003] A Chinese patent discloses a water-stop structure of a pre-buried grouting pipe supplemented with a water-swelling waterstop strip (Announcement No. CN106320729A), including a pre-buried grouting conduit, a grouting main pipe fixed to the structure by a connector, and a water-swelling waterstop strip. The grouting main pipe is fixed to the structure by a connector to prevent it from shifting during the concrete pouring process. Grouting holes are set every 20cm to 30cm on the grouting main pipe to meet the grouting of multiple locations in the structure to ensure the sealing effect. The grouting holes are wrapped by a single-layer filter screen, and the grouting holes are temporarily blocked with tape, which can effectively prevent impurities such as sand and gravel from entering the grouting pipe, ensuring that the grouting pipe is unobstructed and the grouting holes are not blocked. Beneficial effect: The invention adopts the above-mentioned pre-buried grouting pipe supplemented with a water-swelling waterstop strip. The cracks around the construction joints of the structure can be effectively blocked, and the crack blocking process is simple, easy to operate, good blocking effect, time-saving and labor-saving, and low cost.

[0004] After the expansion water stop strips in the above prior art swell in water for many times, the expansion water stop strips will show a phenomenon of gradually weakening expansion effect. This is because the structure of the material may be damaged during repeated water absorption and drying, resulting in a decrease in water absorption capacity, which reduces the reliability of the water stop strip during long-term use. Therefore, the present invention provides a self-adhesive slow expansion water stop strip to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a self-adhesive slow expansion water stop strip to solve the problem of reduced reliability of the water stop strip during long-term use mentioned in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A self-adhesive slow expansion water stop strip comprises a mounting pipe rack, the inner wall of the mounting pipe rack is provided with an expansion mechanism capable of repeated expansion, the outer wall of the mounting pipe rack is provided with a pasting mechanism capable of sticking in the gap of a building wall, and both ends of the mounting pipe rack are provided with connection mechanisms capable of splicing and extending the mounting pipe rack.

[0008] As a further solution of the present invention, the expansion mechanism includes a sponge bar, a plurality of installation vacancies are provided at the side end of the installation pipe rack, and the sponge bar is fixedly installed on the inner wall of the installation vacancies, and a blocking rod is fixedly installed on the upper end of the installation vacancies.

[0009] As a further solution of the present invention, a limiting plate is fixedly installed on the inner wall of the mounting tube rack close to the sponge strip, and a plurality of water-permeable grooves are provided at the side end of the limiting plate, and a material storage strip is fixedly installed on the inner wall of the mounting tube rack close to the limiting plate.

[0010] As a further solution of the present invention, a fixing frame is fixedly installed on one end of the limiting plate away from the mounting pipe rack, a material storage tube is fixedly installed on the inner wall of the fixing frame, a retractable limiting ring is fixedly installed on the inner wall of the material storage tube, a material transfer tube is arranged between the limiting ring and the material storage strip, and a baffle is slidably arranged in the limiting ring.

[0011] As a further solution of the present invention, a plurality of entry and exit openings are opened at the side end of the fixing frame close to the material storage strip, and the end of the sponge strip close to the end away from the baffle rod is fixedly mounted on the outer wall of the material storage tube, the end of the material transfer tube away from the material storage tube is fixedly mounted with a feeding one-way valve, and an airbag tube is fixedly mounted at one end of the material storage tube, and the airbag tube is arranged at the center of the material storage tube, and a one-way air intake valve is fixedly mounted at one end of the airbag tube.

[0012] As a further solution of the present invention, the pasting mechanism includes a rubber strip, and the rubber strip is arranged in a plurality of arrays and installed on the outer wall of the mounting tube rack, a placement groove is provided on the outer wall of the mounting tube rack close to the rubber strip, and the rubber strip is placed in the placement groove, and an adhesive strip is fixedly installed on the outer wall of the mounting tube rack close to the placement groove.

[0013] As a further solution of the present invention, the connecting mechanism includes a connecting block, and the connecting block is fixedly installed on one end of the mounting pipe rack, a connecting ring is fixedly installed on the end of the mounting pipe rack away from the connecting block, and the connecting ring is fixedly installed on the inner wall of the mounting pipe rack, and a rebound rod is fixedly installed on the outer wall of the connecting block.

[0014] As a further solution of the present invention, an insert block is fixedly installed on one end of the rebound rod away from the connecting block, a slot matching the size of the insert block is provided at the side end of the connecting ring, a limiting rod is fixedly installed on the side end of the connecting block, and a limiting groove matching the limiting rod is provided on the inner wall of the connecting ring.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the present invention is used, the polymer material, inorganic water-absorbing swelling material and chemical additives of the expansion waterstop strip are separated and stored. When there is water, the chemical additives installed in the pipe rack enter the storage strip storing the polymer material and the inorganic water-absorbing swelling material, so that water reacts with the polymer material, the inorganic water-absorbing swelling material and the chemical additives, and the storage strip begins to expand, so that the storage strip can expand repeatedly, and after the expansion is completed, the chemical additives remaining in the storage strip can still make the waterstop strip expand, thereby improving the reliability of the waterstop strip during long-term repeated expansion use.

[0017] 2. When the present invention is used, the length of the spliced ​​and extended installation pipe rack is matched with the length of the building gap, so that the length of the spliced ​​and extended installation pipe rack is matched with the length of the building gap, thereby avoiding the waste caused by cutting when filling the gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of a self-adhesive slow expansion waterstop.

[0019] Figure 2 The schematic diagram is a structural diagram of a pipe rack installed in a self-adhesive slow expansion water stop strip.

[0020] Figure 3 It is a schematic diagram of the structure of a sponge strip in a self-adhesive slow expansion waterstop strip.

[0021] Figure 4 The figure is a schematic diagram of the structure of an air bag tube in a self-adhesive slow expansion water stop strip.

[0022] Figure 5 The figure is a schematic diagram of the structure of a connection mechanism in a self-adhesive slow expansion water stop strip.

[0023] Figure 6 The figure is a schematic diagram of the structure of a connecting block in a self-adhesive slow expansion water stop strip.

[0024] Figure 7 This is a schematic diagram of the structure of a material storage strip in a self-adhesive slow expansion water stop strip.

[0025] Figure 8 This is a schematic diagram of the structure of a limiting ring in a self-adhesive slow expansion waterstop.

[0026] In the figure: 1. Install the pipe rack;

[0027] 2. expansion mechanism; 201. sponge strip; 202. installation gap; 203. stop rod;

[0028] 204, limit plate; 205, water-permeable groove; 206, material storage bar; 207, fixed frame; 208, material storage pipe; 209, limit ring; 210, material transfer pipe; 211, baffle;

[0029] 212, inlet and outlet vacancies; 213, feed check valve; 214, air bag tube; 215, one-way air inlet valve

[0030] 3. Pasting mechanism; 301. Rubber strip; 302. Placement slot; 303. Pasting strip;

[0031] 4. Connecting mechanism; 401. Connecting block; 402. Connecting ring; 403. Rebound rod; 404. Insert block; 405. Slot; 406. Limiting rod; 407. Limiting groove. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments 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.

[0033] See also Figures 1 to 8 In an embodiment of the present invention, a self-adhesive slow expansion water stop strip includes a mounting pipe rack 1, and the mounting pipe rack 1 is a prior art. The mounting pipe rack 1 can be folded and bent to fit in the gap of a building wall. The inner wall of the mounting pipe rack 1 is provided with an expansion mechanism 2 that can expand repeatedly. The outer wall of the mounting pipe rack 1 is provided with a pasting mechanism 3 that can be pasted in the gap of the building wall. Both ends of the mounting pipe rack 1 are provided with connection mechanisms 4 that can be spliced ​​to extend the mounting pipe rack 1.

[0034] See also Figures 1 to 4 The expansion mechanism 2 includes a sponge strip 201. A plurality of mounting vacancies 202 are provided at the side end of the mounting pipe rack 1, and the sponge strip 201 is fixedly installed on the inner wall of the mounting vacancies 202. The sponge strip 201 is a prior art and will not be described in detail herein. Most of the existing sponge strips 201 are artificially synthesized. When dry, the volume of the sponge strip 201 just fits the mounting vacancies 202. After the sponge strip 201 absorbs water, the sponge strip 201 expands. A baffle rod 203 is fixedly installed at the upper end of the mounting vacancies 202. The baffle rod 203 provided in the mounting vacancies 202 prevents the sponge strip 201 from moving out of the mounting pipe rack 1 through the mounting vacancies 202 after absorbing water.

[0035] See also Figures 1 to 7The installation tube rack 1 is fixedly installed with a limit plate 204 on the inner wall near the sponge strip 201, and the installed limit plates 204 are in a semi-V shape, so that the sponge strip 201 shrinks more slowly during dehydration, and the side end of the limit plate 204 begins to have a plurality of water-permeable grooves 205, and the limit plate 204 uses an elastic material of a thermoplastic synthetic polymer resin, and the installation tube rack 1 is fixedly installed with a storage strip 206 on the inner wall near the limit plate 204, the above The stock strip 206 is a water-permeable fabric in the prior art. The stock strip 206 contains polymer materials and inorganic water-swelling materials, all of which are in powder and granular form. The water-permeable groove 205 allows water to pass through the water-permeable groove 205 and react with the polymer materials and inorganic water-swelling materials in the stock strip 206 more conveniently, so that the polymer materials, inorganic water-swelling materials and rubber start to produce a chemical reaction after meeting water, so that the volume of the mixture starts to expand during the reaction, and the stock strip 206 starts to expand.

[0036] See also Figures 1 to 8 A fixing frame 207 is fixedly installed at one end of the limit plate 204 away from the mounting pipe rack 1, and the fixing frame 207 is made of the same material as the mounting pipe rack 1. A storage tube 208 is fixedly installed on the inner wall of the fixing frame 207, and a variety of chemical additives are stored in the storage tube 208. A retractable limiting ring 209 is fixedly installed on the inner wall of the storage tube 208. A material transfer tube 210 is arranged between the limiting ring 209 and the material storage strip 206. A baffle 211 is slidably arranged in the limiting ring 209. When the limiting ring 209 shrinks to a certain extent, the baffle 211 blocks the hole of the limiting ring 209, so that the chemical additives in the storage tube 208 no longer enter the material storage strip 206 through the material transfer tube 210, thereby reducing resource consumption.

[0037] See also Figures 1 to 4The side end of the fixed frame 207 close to the material storage strip 206 is provided with a plurality of inlet and outlet openings 212, and the end of the sponge strip 201 away from the baffle 203 passes through the inlet and outlet openings 212, and the end of the sponge strip 201 close to the baffle 203 is fixedly installed on the outer wall of the material storage tube 208. When the sponge strip 201 shrinks, the sponge strip 201 pulls the material storage tube 208 to restore its original state. The end of the material transfer tube 210 away from the material storage tube 208 is fixedly installed with a feed check valve 213. The feed check valve 213 is a prior art and will not be described in detail here. The feed check valve 213 is set so that after the material in the material storage tube 208 enters the material storage strip 206, the chemical additives contact and react with the polymer material and the inorganic water-absorbing and swelling material in the material storage strip 206, and then start to react and expand. Prevent the expanded polymer material and inorganic water-absorbing and expanding material from entering the material transfer tube 210, and one end of the storage tube 208 is fixedly installed with an airbag tube 214, and the airbag tube 214 is set at the center of the storage tube 208, and one end of the airbag tube 214 is fixedly installed with a one-way air intake valve 215. The above-mentioned one-way air intake valve 215 is a prior art and will not be described in detail here. When the moisture in the sponge strip 201 evaporates and dries, the sponge strip 201 shrinks, causing the deposit tube to begin to expand and return to its original state, and in the process of the deposit tube returning to its original state, the air pressure in the storage tube 208 is reduced, so that the gas enters the airbag tube 214 through the one-way air intake valve 215, causing the airbag tube 214 to begin to expand, thereby pushing the chemical preparation in the storage tube 208 to remain attached to the inner wall of the storage tube 208.

[0038] See also Figure 2 The pasting mechanism 3 includes a rubber strip 301, and the rubber strip 301 is arranged in a plurality of arrays and installed on the outer wall of the mounting pipe rack 1. A placement groove 302 is opened on the outer wall of the mounting pipe rack 1 close to the rubber strip 301, and the rubber strip 301 is placed in the placement groove 302. The arranged rubber strip 301 makes the material storage strip 206 fit in the building gap when it expands, so as to avoid direct contact between the material storage strip 206 and the building gap and cause damage to the material storage strip 206. An adhesive strip 303 is fixedly installed on the outer wall of the mounting pipe rack 1 close to the placement groove 302. The arranged adhesive strip 303 makes it more stable and convenient to fix the mounting pipe rack 1 in the building gap.

[0039] See also Figures 1 to 6The connecting mechanism 4 includes a connecting block 401, and the connecting block 401 is fixedly installed at one end of the mounting pipe rack 1, and a connecting ring 402 is fixedly installed at the end of the mounting pipe rack 1 away from the connecting block 401, and the connecting ring 402 is fixedly installed on the inner wall of the mounting pipe rack 1, and a rebound rod 403 is fixedly installed on the outer wall of the connecting block 401, and the above-mentioned rebound rod 403 is set to an elastic material. When it is necessary to splice expansion water stop strips of different lengths, the connecting block 401 moved and set on the mounting pipe rack 1 is rotated to insert it into the connecting ring 402 at one end of the new mounting pipe rack 1, so that the splicing and extension of the length of the water stop strip is more convenient.

[0040] See also Figures 1 to 6 The end of the rebound rod 403 away from the connecting block 401 is fixedly installed with an insert block 404, and the side end of the connecting ring 402 is provided with a slot 405 that matches the size of the insert block 404. When the rebound rod 403 is inserted into the connecting block 401, the rebound rod 403 pushes the insert block 404 to be inserted into the slot 405, thereby fixing the two installation pipe racks 1 in connection. A limiting rod 406 is fixedly installed on the side end of the connecting block 401, and a limiting groove 407 that matches the limiting rod 406 is provided on the inner wall of the connecting ring 402. After the connecting block 401 is inserted into the connecting ring 402, the connecting block 401 is rotated so that the limiting rod 406 provided on the connecting block 401 is stuck in the limiting groove 407 to prevent the spliced ​​installation pipe racks 1 from detaching.

[0041] The working principle of the present invention is as follows: when it is necessary to add an expansive water stop strip to a building gap, first measure the length required for the detection gap, and after the measurement, start splicing and extending the length of the water stop strip, insert the connecting block 401 installed at one end of the installation pipe rack 1 into the connecting ring 402, so that the length of the spliced ​​and extended installation pipe rack 1 fits the length of the building gap, avoiding waste caused by cutting;

[0042] When the connection block 401 is inserted into the connection ring 402, the limiting rod 406 needs to be aligned with the limiting groove 407, and then the connection block 401 is connected to the connection ring 402. The connection ring 402 squeezes and pushes the plug block 404, and the rebound rod 403 bends. After the plug block 404 moves to a suitable position, the rebound rod 403 pushes the plug block 404 to be inserted into the slot 405, and the limiting rod 406 is rotated to prevent the limiting rod 406 from being disengaged in the limiting groove 407. The limiting connection is fixed twice, thereby preventing the spliced ​​installation pipe rack 1 from being separated;

[0043] The installation pipe rack 1 is placed at a suitable position. When the installation pipe rack 1 encounters water, the sponge strip 201 absorbs the water, thereby achieving the primary waterproofing effect and avoiding slight water leakage.

[0044] When the sponge strip 201 completely absorbs water, the sponge strip 201 expands and squeezes the storage tube 208, so that the chemical additives in the storage tube 208 enter the storage strip 206, and the excess water enters the storage strip 206 through the water-permeable groove 205, so that the polymer material, the inorganic water-absorbing and swelling material and the chemical additives react with water and begin to expand, so that the water stop strip expands and pushes the installation pipe rack 1 to expand and squeeze in the building gap, so that the installation pipe rack 1 fills the building gap, thereby playing a waterproof role:

[0045] When the sponge strip 201 is dehydrated, it shrinks and pulls the storage tube 208 back to its original state. The gas enters the airbag tube 214 through the one-way air inlet valve 215. The airbag tube 214 expands and squeezes the chemical additives onto the inner wall of the storage tube 208, so that the expanded water stop strip returns to its original state, thereby improving the reliability of the water stop strip during long-term repeated expansion and use. The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes according to the technical solution and inventive concept of the present invention, which should be covered within the protection scope of the present invention.

Claims

1. A self-adhesive slow expansion water stop strip, comprising a mounting pipe rack (1), It is characterized in that The inner wall of the installation pipe rack (1) is provided with an expansion mechanism (2) capable of repeated expansion, the outer wall of the installation pipe rack (1) is provided with a sticking mechanism (3) capable of sticking to the gap in the building wall, and both ends of the installation pipe rack (1) are provided with connection mechanisms (4) capable of splicing and extending the installation pipe rack (1).

2. A self-adhesive slow expansion water stop strip according to claim 1, It is characterized in that The expansion mechanism (2) comprises a sponge strip (201), a plurality of installation vacancies (202) are provided at the side end of the installation pipe rack (1), and the sponge strip (201) is fixedly mounted on the inner wall of the installation vacancies (202), and a blocking rod (203) is fixedly mounted on the upper end of the installation vacancies (202).

3. A self-adhesive slow expansion water stop strip according to claim 2, It is characterized in that A limiting plate (204) is fixedly installed on the inner wall of the installation pipe rack (1) close to the sponge strip (201), and a plurality of water-permeable grooves (205) are provided at the side end of the limiting plate (204). A material storage strip (206) is fixedly installed on the inner wall of the installation pipe rack (1) close to the limiting plate (204).

4. A self-adhesive slow expansion water stop strip according to claim 3, It is characterized in that A fixing frame (207) is fixedly mounted on one end of the limiting plate (204) away from the mounting pipe rack (1); a material storage pipe (208) is fixedly mounted on the inner wall of the fixing frame (207); a retractable limiting ring (209) is fixedly mounted on the inner wall of the material storage pipe (208); a material transfer pipe (210) is arranged between the limiting ring (209) and the material storage strip (206); and a baffle (211) is slidably arranged in the limiting ring (209).

5. A self-adhesive slow expansion water stop strip according to claim 4, It is characterized in that The fixed frame (207) is provided with a plurality of entry and exit openings (212) at the side end close to the material storage strip (206), and the end of the sponge strip (201) close to the end away from the blocking rod (203) is fixedly mounted on the outer wall of the material storage tube (208), the end of the material transfer tube (210) away from the material storage tube (208) is fixedly mounted with a feed check valve (213), and one end of the material storage tube (208) is fixedly mounted with an air bag tube (214), and the air bag tube (214) is arranged at the center of the material storage tube (208), and one end of the air bag tube (214) is fixedly mounted with a check valve (215).

6. A self-adhesive slow expansion water stop strip according to claim 1, It is characterized in that The pasting mechanism (3) comprises a rubber strip (301), and the rubber strip (301) is arranged in a plurality of arrays and is mounted on the outer wall of the mounting tube rack (1); a placement groove (302) is provided on the outer wall of the mounting tube rack (1) close to the rubber strip (301), and the rubber strip (301) is placed in the placement groove (302); and an adhesive strip (303) is fixedly mounted on the outer wall of the mounting tube rack (1) close to the placement groove (302).

7. A self-adhesive slow expansion water stop strip according to claim 1, It is characterized in that The connecting mechanism (4) comprises a connecting block (401), and the connecting block (401) is fixedly mounted on one end of the mounting pipe rack (1), a connecting ring (402) is fixedly mounted on one end of the mounting pipe rack (1) away from the connecting block (401), and the connecting ring (402) is fixedly mounted on the inner wall of the mounting pipe rack (1), and a rebound rod (403) is fixedly mounted on the outer wall of the connecting block (401).

8. A self-adhesive slow expansion water stop strip according to claim 7, It is characterized in that An insert block (404) is fixedly mounted on one end of the rebound rod (403) away from the connecting block (401); a slot (405) matching the size of the insert block (404) is provided at the side end of the connecting ring (402); a limiting rod (406) is fixedly mounted on the side end of the connecting block (401); and a limiting groove (407) matching the limiting rod (406) is provided on the inner wall of the connecting ring (402).

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