A novel airtightness testing device for the production of environmentally friendly waterproof coatings

Abstract

This invention relates to the field of coating testing technology, and particularly to a novel airtightness testing device for the production of environmentally friendly waterproof coatings. It includes a testing chamber with several sets of fixed through slots arranged in a circular array on the top. Testing units are fixedly installed within these slots. Each testing unit includes an upper mounting ring, and a lifting pool is vertically mounted below the upper mounting ring and the two are interconnected. A drain outlet for water vapor permeation is located at the center of the bottom of the lifting pool, and a retaining ring is coaxially positioned at the edge of the top opening of the drain outlet. This invention allows workers to simultaneously observe the airtightness of waterproof coatings of different thicknesses when exposed to liquid water and water vapor of varying intensities, thus obtaining the waterproofing effect of the coating at different thicknesses in a short time. This not only shortens working time but also enriches functionality, enabling the device to be compatible with more types of tests.

Description

Technical Field

[0001] This invention belongs to the field of coating testing technology, and specifically relates to a novel airtightness testing device for the production of environmentally friendly waterproof coatings. Background Technology

[0002] Nowadays, waterproof coatings are mostly made of new environmentally friendly materials. They are characterized by low odor and low levels of harmful substances, so they can be widely used in areas with high population density. Waterproof coatings are mostly used outdoors, underwater, and in areas with high humidity. In order to ensure that the waterproof and airtight properties of the waterproof coating meet the standards, it is necessary to test the waterproof and airtight properties.

[0003] A search revealed a patent document with publication number CN119198474A, published on December 27, 2024, entitled "A Device and Method for Testing the Performance of Waterproof Coatings." This document includes a testing box and a mounting plate that slides vertically along the testing box. A testing disc is placed on the mounting plate, and the testing box contains a clamping part for holding and fixing the testing disc. The bottom of the mounting plate has a testing part for measuring the waterproofing performance of the coating. A drive shaft is rotatably connected inside the testing box, with a spray box fixedly connected to its bottom end. The top of the testing box has a feeding part for conveying the testing medium into the spray box, and the sides of the spray box have application parts for smoothing the coating. In this embodiment, the drive shaft rotates the spray box, causing the waterproof coating to be evenly sprayed onto the testing disc. The gravity pressure exerted by the waterproof coating on the sliding plate causes a moving application plate to extend, thereby smoothing the waterproof coating and forming a uniform and dense waterproof coating on the testing disc, effectively improving the testing results.

[0004] However, the above embodiments still have the following drawbacks:

[0005] The above embodiments cannot simultaneously test multiple groups of waterproof coatings. When it is necessary to test the airtightness of different waterproof coatings under different thickness conditions, the test must be stopped midway and adjusted multiple times, thus prolonging the testing time. Furthermore, the above embodiments only test a single item and cannot perform spraying or misting operations, thus failing to simulate rainy and high humidity environments, resulting in reduced compatibility. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a novel airtightness testing device for the production of environmentally friendly waterproof coatings, comprising a testing box. The top of the testing box has several sets of fixed through slots arranged in a circular array. A testing unit is fixedly installed within each fixed through slot. Each testing unit includes an upper mounting ring, and a lifting pool is vertically mounted below the upper mounting ring and the two are interconnected. A drain outlet for water vapor permeation is located at the center of the bottom of the lifting pool. A retaining ring is coaxially mounted at the edge of the top opening of the drain outlet, and a testing mechanism for coating application is movably mounted on the retaining ring.

[0007] The inner wall of the lifting pool is provided with an atomizing ring pipe, and several sets of atomizing nozzles for spraying water mist are distributed in a ring array on the atomizing ring pipe; the output end of the atomizing nozzle faces the retaining ring.

[0008] The top of the mounting ring is equipped with a sealing unit that is raised and lowered. The sealing unit includes a sealing cover. The sealing cover, the mounting ring and the lifting pool are combined to form a sealing cavity. The bottom of the sealing cover is provided with a spray ring pipe for simulating rain and several sets of spray heads.

[0009] Furthermore, a top railing is coaxially provided at the top edge of the detection box, and a first electric slide is provided vertically on the side of each set of fixed through slots near the top railing. The output end of the first electric slide is connected to the sealing cover.

[0010] Furthermore, the cavity of the detection box has a number of second electric slides arranged in a ring array, the same number as the number of lifting pools. The second electric slides are vertically arranged, and the output end of each set of second electric slides is installed on a corresponding set of lifting pools. A bamboo-joint soft sleeve connects the upper mounting ring and the lifting pools.

[0011] Furthermore, several groups of the spray heads are arranged in a circular array, and the output end of each group of spray heads is vertically downward; a servo motor is provided on the top of the sealing cover, the output end of the servo motor extends to the bottom of the sealing cover, and is connected to a rotating rod for transmission.

[0012] Furthermore, a spiral stirring rod is installed at the bottom of the rotating rod. The spiral stirring rod is a vertically arranged spiral structure, and the central axis of the spiral stirring rod coincides with the central axis of the sealing cover.

[0013] Furthermore, a guide ring is sleeved at the bottom edge of the retaining ring. The diameter of the bottom of the guide ring is larger than the diameter of its top. A crescent groove with a fan-shaped cross-section is provided on the side wall of the guide ring. The output end of each group of atomizing nozzles faces the guide ring.

[0014] Furthermore, the testing mechanism includes a testing frame, which is movably mounted on the top of the retaining ring. An eaves ring is provided at the bottom edge of the testing frame, and a water collection ring pipe is connected to the bottom edge of the eaves ring.

[0015] Furthermore, a coating tank is provided at the top center of the test frame, and several sets of first micropores are evenly distributed on the bottom inner wall of the coating tank. The coating tank is connected to the drain outlet through each set of first micropores.

[0016] Furthermore, the top diameter of the eave ring is smaller than the bottom diameter; several sets of second micropores are evenly distributed on the inner and outer side walls of the eave ring.

[0017] Furthermore, a first water collection tank and a second water collection tank are provided on one side of the lifting pool. The input end of the first water collection tank is connected to the output end of the drain pipe through a set of flexible hoses, and the input end of the second water collection tank is connected to the output end of the water collection ring pipe through a set of flexible hoses.

[0018] The beneficial effects of this invention are:

[0019] 1. By setting up multiple detection units and applying waterproof coatings of varying thicknesses to each unit during testing, and then closing the sealing caps of each unit, a sealed cavity is formed. Within each sealed cavity, water mist can be sprayed either from the top or horizontally. This allows workers to simultaneously observe the airtightness of waterproof coatings of different thicknesses when exposed to varying intensities of liquid water and water vapor. This enables the determination of the waterproofing effect of different thicknesses of coating in a short time. This not only shortens working time but also enhances functionality, allowing the device to accommodate a wider range of testing types.

[0020] 2. While conducting airtightness testing on the inner surface of the coating tank, a funnel-shaped eaves ring is used to make the distribution of the waterproof coating more three-dimensional. If water mist penetrates the waterproof coating on the eaves ring, it will enter the water collection ring pipe through the various sets of second micropores, and then flow into the second water collection tank through a set of flexible hoses. If clean water sprayed from the sprinkler head penetrates the waterproof coating on the coating tank, it will enter the first water collection tank through the various sets of first micropores. This allows for the testing of the waterproof coating's airtightness when facing buildings of different shapes, thereby improving the authenticity and accuracy of the test.

[0021] 3. Because the side view of the crescent groove is a fan-shaped structure, some water mist, after contacting the guide ring, is directed vertically upward by the crescent groove and acts on the inner wall of the eaves ring, so that both the inner and outer sides of the eaves ring can come into contact with the water mist, thereby improving the auxiliary effect on the detection work.

[0022] 4. The upper mounting ring and the fixed through groove are fixedly connected, and the second electric slide can drive the lifting pool to move vertically. The upper mounting ring and the lifting pool are also connected by a bamboo-joint soft sleeve. This allows the water volume in the sealed cavity to be controlled by controlling the height of the lifting pool, and thus the water pressure acting on the waterproof coating can be adjusted. This allows the device to detect the airtightness of the waterproof coating at different depths underwater and under different water pressures. This makes the device suitable for any operating environment, and can even perform airtightness testing on waterproof coatings used for underwater operations.

[0023] 5. When the water level in the sealed cavity reaches the height of the spiral stirring rod, stop the spraying operation, then start the servo motor. The servo motor drives the rotating rod and spiral stirring rod to rotate, thereby agitating the water in the sealed cavity. Because the spiral stirring rod has a spiral structure, the surrounding water will vortex and continuously impact the waterproof coating at the bottom of the sealed cavity, simulating the sealing effect of the waterproof coating under impact, thus enriching the functionality of the device.

[0024] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the airtightness detection device according to an embodiment of the present invention is shown.

[0027] Figure 2 A cross-sectional schematic diagram of an airtightness testing device according to an embodiment of the present invention is shown.

[0028] Figure 3 A schematic diagram showing the connection between the sealing unit and the first electric slide according to an embodiment of the present invention is shown.

[0029] Figure 4 A bottom view schematic diagram of a sealing cap and a spiral stirring rod according to an embodiment of the present invention is shown.

[0030] Figure 5 A schematic diagram showing the connection between the detection unit and the second electric slide according to an embodiment of the present invention is provided.

[0031] Figure 6 An exploded view of the lifting pool and testing mechanism according to an embodiment of the present invention is shown.

[0032] Figure 7 A front view schematic diagram of the guide ring and crescent groove according to an embodiment of the present invention is shown.

[0033] Figure 8 A schematic diagram of the structure of the testing mechanism according to an embodiment of the present invention is shown.

[0034] Figure 9 An exploded view of the testing mechanism according to an embodiment of the present invention is shown.

[0035] In the diagram: 100, Testing box; 110, Top railing; 200, First electric slide; 300, Sealing unit; 310, Sealing cover; 320, Servo motor; 330, Spray ring pipe; 331, Spray inlet; 340, Spray head; 350, Rotating rod; 360, Spiral stirring rod; 400, Second electric slide; 500, Testing unit; 510, Upper mounting ring; 520, Bamboo joint soft sleeve; 530, Lifting pool; 531, Drain; 532, Sealing ring; 540, Testing mechanism; 541, Testing frame; 542, Coating tank; 543, First micropore; 544, Eaves ring; 545, Water collection ring pipe; 550, Atomizing ring pipe; 551, Atomizing nozzle; 560, Guide ring; 561, Crescent groove; 600, First water collection tank; 700, Second water collection tank. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] This invention provides a novel airtightness testing device for the production of environmentally friendly waterproof coatings, as exemplified by... Figure 1 and Figure 2 As shown, the device includes a detection box 100, with a top railing 110 coaxially arranged at the top edge of the detection box 100. The top of the detection box 100 has several sets of fixed through slots arranged in a ring array with its own central axis as the center.

[0038] For example, each set of fixed through slots is provided with a set of first electric slides 200 in the vertical direction on the side near the top railing 110.

[0039] For example, each set of fixed through slots is fixedly installed with a set of detection units 500, and each set of detection units 500 is movably installed with a set of sealing units 300 on top. The detection units 500 and the corresponding set of sealing units 300 are combined to form a sealed cavity.

[0040] For example, each set of sealing units 300 is mounted on the output end of a corresponding set of first electric slides 200.

[0041] First, the waterproof coating is applied to the detection area of ​​the detection unit 500. Then, the sealing unit 300 is covered on top of the detection unit 500 by the first electric slide 200, so that the waterproof coating is in the sealed cavity. Then, the waterproof coating is tested in real environment when it is raining and when the air humidity is high by spraying water and spraying water mist.

[0042] For example, the cavity of the detection box 100 has a number of second electric slides 400 arranged in a ring array, which is the same number as the detection units 500. The second electric slides 400 are vertically arranged, and the output end of each group of second electric slides 400 is installed on the main body of the corresponding group of detection units 500 located inside the detection box 100.

[0043] The second electric slide 400 is used to drive the lifting components of the detection unit 500 to move vertically. It is used to test the airtightness of waterproof coatings under different water pressures.

[0044] Specifically, each of the second electric slides 400 is provided with a first water collection tank 600 and a second water collection tank 700 on one side, and the output ends of the first water collection tank 600 and the second water collection tank 700 are connected to the detection unit 500.

[0045] The first water tank 600 and the second water tank 700 are used to collect clean water that has permeated the waterproof coating and compare it with the test water to obtain the airtightness and waterproofness of the waterproof coating.

[0046] For example, such as Figure 3 and Figure 4 As shown, the sealing unit 300 includes a sealing cover 310, which is located directly above a corresponding set of detection units 500 and is mounted on the output end of a corresponding set of first electric slides 200. A servo motor 320 is provided on the top of the sealing cover 310, and the output end of the servo motor 320 extends below the sealing cover 310 and is connected to a rotating rod 350. A spiral stirring rod 360 is mounted at the bottom of the rotating rod 350. The spiral stirring rod 360 has a vertically arranged spiral structure, and its central axis coincides with the central axis of the sealing cover 310.

[0047] For example, a spray ring pipe 330 is installed on the top of the sealing cover 310. The central axis of the spray ring pipe 330 coincides with the central axis of the sealing cover 310, and several sets of spray heads 340 are arranged in a ring array at the bottom of the spray ring pipe 330. The output end of the spray head 340 is vertically downward. A spray inlet 331 is connected to the top of the spray ring pipe 330, and the top of the spray inlet extends above the sealing cover 310.

[0048] First, waterproof coatings of different thicknesses are applied to the detection areas of each detection unit 500. Then, the first electric slide 200 of each group is activated, causing its corresponding sealing cover 310 to descend and close on top of each detection unit 500, ensuring that all waterproof coatings are within a sealed cavity. Next, clean water is injected into the spray ring pipe 330 through the spray inlet 331, and then sprayed onto the waterproof coating below through each spray head 340, thus simulating the airtightness of the waterproof coating in a rainy environment.

[0049] When the water level inside the sealed cavity reaches the height of the spiral stirring rod 360, the spraying operation stops, and then the servo motor 320 is started. The servo motor 320 drives the rotating rod 350 and the spiral stirring rod 360 to rotate, thereby agitating the water inside the sealed cavity. Furthermore, because the spiral stirring rod 360 has a spiral structure, the surrounding water vortexes and continuously impacts the waterproof coating at the bottom of the sealed cavity, simulating the sealing effect of the waterproof coating under impact, thus enriching the functionality of the device.

[0050] For example, such as Figure 5 and Figure 6 As shown, the detection unit 500 includes an upper mounting ring 510, which is fixedly installed in a fixed through groove. The bottom of the upper mounting ring 510 extends into the detection box 100 and is connected to a bamboo joint soft sleeve 520. The bottom of the bamboo joint soft sleeve 520 is connected to a lifting pool 530. The output end of each group of the second electric slide 400 is installed on the side wall of the corresponding group of lifting pools 530.

[0051] For example, a drain outlet 531 is provided at the center of the bottom of the lifting pool 530. The bottom of the drain outlet 531 is connected to the first water collection tank 600 through a set of hoses. A retaining ring is coaxially provided at the top opening edge of the drain outlet 531. A sealing ring 532 is provided at the top edge of the retaining ring, and a testing mechanism 540 is movably installed on the retaining ring.

[0052] For example, a guide ring 560 is sleeved at the bottom edge of the retaining ring, and an atomizing ring tube 550 is provided on the inner wall of the lifting pool 530. Several sets of atomizing nozzles 551 are distributed in a ring array on the atomizing ring tube 550. The output end of the atomizing nozzle 551 faces the guide ring 560.

[0053] For example, such as Figure 7 As shown, the diameter of the bottom of the guide ring 560 is larger than the diameter of its top, and a crescent groove 561 with a fan-shaped cross-section is provided on the side wall of the guide ring 560.

[0054] For example, such as Figure 8 and Figure 9 As shown, the testing mechanism 540 includes a testing frame 541, which is movably mounted on the top of a retaining ring. A coating groove 542 is located at the center of the top of the testing frame 541. Several sets of first micropores 543 are evenly distributed on the inner bottom wall of the coating groove 542. The coating groove 542 is connected to a drain outlet 531 through each set of first micropores 543. An eaves ring 544 is located at the bottom edge of the testing frame 541, with the top diameter of the eaves ring 544 being smaller than its bottom diameter. Several sets of second micropores are evenly distributed on the inner and outer side walls of the eaves ring 544. A water collection ring pipe 545 is connected to the bottom edge of the eaves ring 544, and the output end of the water collection ring pipe 545 is connected to a second water collection tank 700 through a set of flexible hoses.

[0055] The waterproof coating is evenly applied to the inner and outer walls of the coating tank 542 and the eaves ring 544. Then, the sealing cover 310 is closed, and the spray nozzles 340 are turned on to begin simulated rainy weather operation. Simultaneously, the atomizing nozzles 551 are activated, continuously spraying water mist onto the outer wall of the eaves ring 544. Some of the water mist, after contacting the guide ring 560, is directed vertically upwards by the crescent groove 561 and acts on the inner wall of the eaves ring 544, ensuring that both the inner and outer sides of the eaves ring 544 are in contact with the water mist. If the water mist penetrates the waterproof coating on the eaves ring 544, it enters the water collection ring pipe 545 through the second micropores and then flows into the second water collection tank 700 through a set of flexible hoses. If the clean water sprayed by the spray nozzles 340 penetrates the waterproof coating on the coating tank 542, it enters the first water collection tank 600 through the first micropores 543. This method allows for the testing of the airtightness of waterproof coatings in various environments and under the influence of liquid water and water vapor, thereby improving the accuracy of the testing.

[0056] By setting up multiple detection units 500, and applying waterproof coatings of varying thicknesses to each unit during testing, followed by closing the sealing caps 310, each unit forms a sealed cavity. Within these cavities, water mist can be sprayed from either the top or horizontally, allowing operators to simultaneously observe the airtightness of waterproof coatings of different thicknesses when exposed to varying intensities of liquid water and water vapor. This enables the measurement of waterproofing effectiveness at different thicknesses within a short time. This not only shortens working time but also enhances functionality, allowing the device to accommodate a wider range of testing requirements.

[0057] While conducting airtightness testing on the inner surface of the coating tank 542, a funnel-shaped eaves ring 544 is used to make the distribution of the waterproof coating more three-dimensional. If water mist penetrates the waterproof coating on the eaves ring 544, it will enter the water collection ring pipe 545 through the various sets of second micropores, and then enter the second water collection tank 700 through a set of flexible hoses. If clean water sprayed by the spray head 340 penetrates the waterproof coating on the coating tank 542, it will enter the first water collection tank 600 through the various sets of first micropores 543. This allows for the testing of the waterproof coating's airtightness when facing buildings of different shapes, thereby improving the authenticity and accuracy of the test.

[0058] Since the side view of the crescent groove 561 is a fan-shaped structure, some water mist, after contacting the guide ring 560, is directed vertically upward by the crescent groove 561 and acts on the inner wall of the eaves ring 544, so that both the inner and outer sides of the eaves ring 544 can come into contact with the water mist, thereby improving the auxiliary effect on the detection work.

[0059] The upper mounting ring 510 is fixedly connected to the fixed through groove, and the second electric slide 400 can drive the lifting pool 530 to move vertically. The upper mounting ring 510 and the lifting pool 530 are also connected by a bamboo-joint soft sleeve 520. This allows the water volume in the sealed cavity to be controlled by controlling the height of the lifting pool 530, and thus the water pressure acting on the waterproof coating can be adjusted. This allows the device to detect the airtightness of the waterproof coating at different depths underwater and under different water pressures. This makes the device suitable for any operating environment, even for waterproof coatings used in underwater operations, and can perform airtightness testing.

[0060] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A novel airtightness testing device for the production of environmentally friendly waterproof coatings, comprising a testing box, wherein a plurality of fixed through slots are arranged in a circular array on the top of the testing box, and a testing unit is fixedly installed in each of the fixed through slots, characterized in that: The detection unit includes an upper mounting ring, and a lifting pool is provided below the upper mounting ring and the two are connected to each other. A drain outlet for water vapor infiltration is opened at the center of the bottom of the lifting pool. A retaining ring is coaxially provided at the edge of the top opening of the drain outlet. A testing mechanism for coating is movably installed on the retaining ring. The inner wall of the lifting pool is provided with an atomizing ring pipe, and several sets of atomizing nozzles for spraying water mist are distributed in a ring array on the atomizing ring pipe; the output end of the atomizing nozzle faces the retaining ring. The top of the mounting ring is equipped with a sealing unit that is lifted and lowered. The sealing unit includes a sealing cover. The sealing cover, the mounting ring, and the lifting pool are combined to form a sealing cavity. The bottom of the sealing cover is provided with a spray ring pipe for simulating rain and several sets of spray heads. The testing mechanism includes a testing frame, which is movably mounted on the top of the retaining ring. An eaves ring is provided at the bottom edge of the testing frame, and a water collection ring pipe is connected to the bottom edge of the eaves ring. The test rack has a coating tank at the top center, and several sets of first micropores are evenly distributed on the bottom inner wall of the coating tank. The coating tank is connected to the drain outlet through each set of first micropores. The top diameter of the eave ring is smaller than the bottom diameter; several sets of second micropores are evenly distributed on the inner and outer side walls of the eave ring.

2. The airtightness testing device for the production of a novel environmentally friendly waterproof coating according to claim 1, characterized in that: A top railing is coaxially arranged at the top edge of the detection box. Each set of fixed through slots has a first electric slide table arranged vertically on the side near the top railing. The output end of the first electric slide table is connected to the sealing cover.

3. The airtightness testing device for the production of a novel environmentally friendly waterproof coating according to claim 1, characterized in that: The cavity of the detection box contains a number of second electric sliding platforms arranged in a circular array, the same number as the lifting pools. The second electric sliding platforms are vertically arranged, and the output end of each group of second electric sliding platforms is installed on a corresponding lifting pool. A bamboo-joint soft sleeve connects the upper mounting ring and the lifting pool.

4. The airtightness testing device for the production of a novel environmentally friendly waterproof coating according to claim 1, characterized in that: Several groups of the spray heads are arranged in a circular array, and the output end of each group of spray heads is vertically downward; a servo motor is provided on the top of the sealing cover, the output end of the servo motor extends to the bottom of the sealing cover, and is connected to a rotating rod for transmission.

5. The airtightness testing device for the production of a novel environmentally friendly waterproof coating according to claim 4, characterized in that: A spiral stirring rod is installed at the bottom of the rotating rod. The spiral stirring rod is a vertically arranged spiral structure, and the central axis of the spiral stirring rod coincides with the central axis of the sealing cover.

6. The airtightness testing device for the production of a novel environmentally friendly waterproof coating according to claim 1, characterized in that: A guide ring is fitted at the bottom edge of the retaining ring. The diameter of the bottom of the guide ring is larger than the diameter of its top. A crescent groove with a fan-shaped cross-section is provided on the side wall of the guide ring. The output end of each group of atomizing nozzles faces the guide ring.

7. The airtightness testing device for the production of a novel environmentally friendly waterproof coating according to claim 1, characterized in that: The lifting pool is provided with a first water collection tank and a second water collection tank on one side. The input end of the first water collection tank is connected to the output end of the drain outlet through a set of hoses, and the input end of the second water collection tank is connected to the output end of the water collection ring pipe through a set of hoses.

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