A device for detecting waterproof performance of building materials

Abstract

The present application relates to a device for testing the waterproof performance of building materials, which includes a water storage tank, a testing assembly, and a scraping assembly. The water storage tank stores test water. The testing assembly includes a testing box, a testing plate, and a telescopic drive member. The testing box is provided with a testing chamber, and the testing plate is slidably arranged in the testing chamber to divide the testing chamber into a first chamber and a second chamber. The testing box is provided with water inlet and outlet pipes connecting the water storage tank and the first chamber. The testing plate is provided with a water seepage hole connecting the first chamber and the second chamber. The testing plate is located on a side of the first chamber for mounting the material to be tested. The telescopic drive member is arranged in the second chamber for driving the test plate to move within the testing chamber. The scraping assembly includes a first guide wheel, a second guide wheel, a scraping plate, and a pull rope. The scraping assembly can scrape bubbles or residual water on the surface of the material to be tested when the test plate moves within the testing chamber. The present application has the effect of improving the detection accuracy and detection efficiency of waterproof testing.

Description

Technical Field

[0001] The present application relates to the technical field of building material waterproofing detection, and in particular to a building material waterproofing performance detection device. Background Art

[0002] At present, with the rapid development of the construction industry, the quality requirements for building materials are becoming higher and higher. Especially in the long-term use of buildings, the quality of waterproof performance directly affects the safety and service life of the buildings. Therefore, how to efficiently detect the waterproof performance of building materials has become an important topic. The existing detection methods mainly include spraying method and penetration test. The existing detection methods for the waterproof performance of building materials mainly include immersion method, spraying method and penetration test.

[0003] The immersion method evaluates the waterproof performance by completely immersing the material under test in water for a certain period of time and observing its water absorption; the spray method uses a high-pressure nozzle to continuously spray water onto the surface of the material under test, simulating water seepage after rain erosion to evaluate the waterproof performance; the penetration test is to lay the material under test in a box with a hole in the bottom, and inject water at a constant pressure into the box, and evaluate the waterproof performance by measuring the amount of water seepage outside the hole.

[0004] However, for the penetration test, when water is injected into the chamber, dense tiny bubbles will form on the surface of the test material that contacts the water flow. The presence of these bubbles will change the microstructure of the surface of the test material, interfere with the water penetration path and penetration rate, and thus lead to inaccurate test results. Moreover, when the test material is removed after the test is completed, the residual water on the surface of the test material will scatter and affect the accuracy of the secondary test results. Summary of the Invention

[0005] In order to improve the detection accuracy and efficiency of waterproof testing, the present application provides a device for detecting the waterproof performance of building materials.

[0006] The present application provides a device for testing the waterproof performance of building materials using the following technical solutions:

[0007] A device for detecting the waterproof performance of building materials, comprising:

[0008] a water storage tank, wherein the test water is stored in the water storage tank;

[0009] A detection assembly comprising a detection box, a test plate, and a telescopic drive member; the detection box is provided with a detection chamber; the test plate is disposed in the detection chamber and slidably abuts against the chamber wall of the detection chamber to divide the detection chamber into a first chamber and a second chamber; the detection box is provided with an inlet and outlet water pipe connecting the water storage tank and the first chamber; the test plate is provided with a water seepage hole connecting the first chamber and the second chamber; the test plate is located on one side of the first chamber for mounting a material to be tested; the telescopic drive member is disposed in the second chamber for driving the test plate to move within the detection chamber;

[0010] The scraping assembly includes a first guide wheel, a second guide wheel, a scraper and a pull rope; the first guide wheel and the second guide wheel are respectively installed on both sides of the test plate, one end of the pull rope is connected to the side of the first chamber in the test box away from the test plate, and the other end is connected to the side of the first chamber or the second chamber in the test box close to the test plate, the pull rope is engaged with the first guide wheel and the second guide wheel, and the first guide wheel and the second guide wheel are respectively located on both sides of the pull rope, the scraper is connected to the pull rope and can slide against the surface of the material to be tested; when the test plate moves from the first chamber to the second chamber, the first chamber expands and can draw water from the water storage tank, the scraper can move from the first side of the test plate to the second side of the test plate to scrape off bubbles on the side of the material to be tested that contacts the water flow; when the test plate moves from the second chamber to the first chamber, the first chamber shrinks and can discharge the water in the first chamber, the scraper can move from the second side of the test plate to the first side of the test plate to scrape off residual water on the surface of the material to be tested.

[0011] By adopting the above technical solution, the accuracy and stability of the detection are improved, and the automated water extraction and discharge process is realized, which improves the convenience and efficiency of the detection. Specifically, when the test plate moves from the first chamber to the second chamber, the first chamber can be expanded. After negative pressure is formed in the first chamber, the water in the water tank is extracted into the first chamber through the inlet and outlet pipes for testing. At the same time, the scraper moves from the first side of the test plate to the second side, effectively scraping off the dense bubbles and floating dust formed on the surface of the material to be tested that contacts the water flow, thereby preventing the bubbles and floating dust from interfering with the water penetration path and speed, and ensuring the accuracy of the test results. When the test plate moves from the second chamber to the first chamber, the first chamber can be reduced in size. After the pressure in the first chamber is increased, the water in the first chamber is discharged into the water tank through the inlet and outlet pipes. At the same time, the scraper returns from the second side of the test plate to the first side, completely removing the residual moisture on the surface of the material to be tested, and preventing the residual moisture from affecting the results of subsequent tests when the material to be tested is taken.

[0012] Optionally, a first control valve for controlling the on-off of the water inlet and outlet pipes is provided on the water inlet and outlet pipes, and a water purification filter element is provided in the water inlet and outlet pipes.

[0013] By adopting the above technical solution, during the test, the first control valve can be closed and the test plate can be controlled to move from the second chamber to the first chamber, so that the first chamber forms a closed pressurized space, thereby shortening the test time or meeting the test requirements of the material to be tested under different water pressures; the water purification filter element can filter out impurities in the water quality, ensuring the cleanliness of the test water, and further improving the accuracy of the test results.

[0014] Optionally, a water collecting hopper is installed in the second chamber, one end of the water collecting hopper is flared and faces the test plate to collect water leaking from the seepage hole, and the other end is connected to the water tank; a second control valve for controlling the on and off is provided between the water collecting hopper and the second chamber.

[0015] By adopting the above technical solution, the water collecting bucket can effectively collect water leaking from the seepage hole and guide it back into the water storage tank, avoiding water waste while keeping the testing environment clean. At the same time, during the test, the first control valve can be closed and the test plate can be controlled to move from the second chamber to the first chamber, so that the second chamber forms a closed negative pressure space, thereby shortening the test time or meeting the testing requirements of the material to be tested under different negative pressures.

[0016] Optionally, a liquid level observation window is provided on the detection box, and a water level scale line is provided on the water collecting bucket; the water level in the water collecting bucket can be observed through the liquid level observation window.

[0017] By adopting the above technical solution, the liquid level changes in the water collecting bucket can be monitored in real time, which makes it easier for operators to grasp the specific amount of leaked water in a timely manner, and improves the visualization of the detection process and the accuracy of the data.

[0018] Optionally, the scraper includes a scraping part and a magnetic part, one end of the scraping part is used to slide against the material to be tested to scrape off bubbles on the surface of the material to be tested, and the other end is connected to the magnetic part, which is used to absorb metal particles in water.

[0019] By adopting the above technical solution, not only can bubbles on the surface of the material to be tested be effectively removed, ensuring the uniform distribution of water during the test to improve the accuracy of the test results; at the same time, the magnetic attraction part can absorb metal particles in the water to purify the water quality, avoiding the impact of these particles on subsequent tests, and further improving the overall reliability and durability of the detection device.

[0020] Optionally, the scraping portion is made of rubber, silicone or nylon, and one end of the scraping portion that is in sliding contact with the material to be tested is chamfered.

[0021] By adopting the above technical solution, the scraping part is made of rubber, silicone or nylon, which not only has good flexibility and wear resistance, can effectively remove bubbles and residual water on the surface of the material to be tested, but also will not cause scratches or other damage to the material to be tested; at the same time, one end of the scraping part is chamfered with an arc, which further reduces the friction that may be generated when contacting the material to be tested, ensures a smoother scraping process, and improves the overall reliability and ease of operation of the detection device.

[0022] Optionally, a tensioning assembly is also included, which includes a fixed shaft, a winding roller and an elastic member. The fixed shaft is fixed on the detection box and is located in the detection cavity. The winding roller is rotatably set on the fixed shaft. The pull rope is fixed on the winding roller. The elastic member is arranged between the fixed shaft and the winding roller to enable the winding roller to reel in the pull rope to provide a certain tensioning force for the pull rope.

[0023] By adopting the above technical solution, the tension state of the pull rope can be effectively ensured, avoiding the scraper from being unable to closely adhere to the surface of the material to be tested due to loose pull rope, thereby improving the effect of removing bubbles and residual water, and further ensuring the accuracy and reliability of the detection.

[0024] Optionally, the detection assembly further includes a fixing frame, and the test plate is provided with a snap-fitting groove at the periphery of the water seepage hole, and the fixing frame is used to snap-fit ​​with the snap-fitting groove to seal the material to be tested against the test plate.

[0025] By adopting the above technical solution, the snap-fitting cooperation between the fixing frame and the snap-fitting groove can effectively ensure the sealing between the material to be tested and the test plate during the testing process, preventing moisture from seeping in from the edge and affecting the accuracy of the test results; at the same time, this design simplifies the installation and disassembly operations and improves the detection efficiency.

[0026] Optionally, a water-permeable plate is provided on one side of the test board for mounting the material to be tested, the water-permeable plate is made of water-permeable ceramic material, and a test paper is laid on the water-permeable plate, and the test paper changes color when exposed to water.

[0027] By adopting the above technical solution, the permeable board can ensure that the material to be tested is fully supported at the seepage hole, so that the entire surface of the material to be tested can be evenly stressed, ensuring the stability and consistency of the test process, and avoiding inaccurate test results due to local suspension; at the same time, the test paper changes color when it comes into contact with water, and can intuitively display the water penetration when the water seepage amount is very small, avoiding inaccurate test results caused by difficult observation due to small water seepage; in addition, when the water seepage amount is large, the test paper can play a certain filtering role, which can prevent small impurities in the test water from clogging the permeable board.

[0028] Optionally, a sealing ring is provided between the test plate and the side wall of the detection cavity.

[0029] By adopting the above technical solution, it is possible to effectively prevent moisture from leaking from between the test cavity and the test plate during the test process, thereby ensuring the closedness of the test environment and improving the stability and reliability of the test results.

[0030] In summary, this application has the following beneficial technical effects:

[0031] 1. While improving the accuracy and stability of the test, it also realizes the automated water extraction and discharge process, improving the convenience and efficiency of the test; specifically, when the test plate moves from the first chamber to the second chamber, the first chamber can be expanded, and after negative pressure is formed in the first chamber, water in the water tank is extracted into the first chamber through the inlet and outlet pipes for testing. At the same time, the scraper moves from the first side of the test plate to the second side, effectively scraping off the dense bubbles and floating dust formed on the surface of the test material in contact with the water flow, preventing the bubbles and floating dust from interfering with the water penetration path and speed, and ensuring the accuracy of the test results; when the test plate moves from the second chamber to the first chamber, the first chamber can be reduced, and after the pressure in the first chamber is increased, the water in the first chamber is discharged into the water tank through the inlet and outlet pipes. At the same time, the scraper returns from the second side of the test plate to the first side, completely removing the residual moisture on the surface of the test material, and preventing the residual moisture from affecting the results of subsequent tests when the test material is taken out;

[0032] 2. During testing, the first control valve can be closed and the test plate can be controlled to move from the second chamber to the first chamber, forming a closed pressurized space in the first chamber. This can shorten the test time or meet the testing requirements of the test material under different water pressures. The water purification filter can filter out impurities in the water, ensuring the cleanliness of the test water and further improving the accuracy of the test results.

[0033] 3. It can not only effectively remove bubbles on the surface of the material to be tested, ensuring uniform distribution of water during the test to improve the accuracy of the test results; at the same time, the magnetic part can absorb metal particles in the water to purify the water quality, avoiding the impact of these particles on subsequent tests, and further improving the overall reliability and durability of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a front half-sectional view of an embodiment of the present application.

[0035] Figure 2 yes Figure 1 A partial enlarged view of part A.

[0036] Figure 3 It is a right half-sectional view of an embodiment of the present application.

[0037] Figure 4 It is a top sectional view of an embodiment of the present application.

[0038] Explanation of the accompanying reference numerals: 100, material to be tested; 1, water storage tank; 2, detection assembly; 21, detection box; 211, detection chamber; 2111, first chamber; 2112, second chamber; 212, water inlet and outlet pipes; 213, liquid level observation window; 22, test plate; 221, water seepage hole; 222, snap-in groove; 23, telescopic drive member; 24, fixed frame; 3, scraping assembly; 31, first guide wheel; 32, second guide wheel; 33, scraper; 331, scraping part; 332, magnetic part; 34, pull rope; 4, tensioning assembly; 41, fixed shaft; 42, winding roller; 43, elastic member; 5, water collecting hopper; 6, first control valve; 7, water purification filter element; 8, second control valve; 9, water-permeable plate; 10, test paper. DETAILED DESCRIPTION

[0039] The following combination Figure 1 - Figure 4 This application is described in further detail.

[0040] The embodiment of the present application discloses a device for detecting the waterproof performance of building materials.

[0041] Reference Figure 1 and Figure 2 In this embodiment, the device for testing the waterproof performance of building materials includes a water tank 1, a testing assembly 2, a scraping assembly 3, and a tensioning assembly 4. The water tank 1 is a container with a certain volume for storing the clean water required for testing. The water tank 1 can be made of stainless steel, plastic, or other corrosion-resistant materials to ensure that it is not easily rusted or damaged during long-term use.

[0042] The detection assembly 2 mainly includes a detection box 21, a test plate 22, a telescopic drive member 23 and a fixed frame 24. The detection box 21 is welded from stainless steel plates. The detection box 21 and the water tank 1 are an integrated structure. The two form a vertically placed rectangular box body, and the detection box 21 is located above the water tank 1; the top of the detection box 21 is provided with an openable sealing cover to facilitate the placement and removal of the test material 100; the bottom of the detection box 21 is provided with support feet to ensure its stable placement; the inner cavity of the detection box 21 is the detection cavity 211, and the test plate 22 is horizontally arranged in the detection cavity 211 to support the detection cavity 211. It is divided into a first chamber 2111 and a second chamber 2112. The first chamber 2111 is located above the second chamber 2112. The first chamber 2111 and the water tank 1 are connected through the inlet and outlet pipes 212. One end of the inlet and outlet pipes 212 connected to the first chamber 2111 is located on the side of the top of the first chamber 2111, and one end of the inlet and outlet pipes 212 connected to the water tank 1 is located on the side of the bottom end of the water tank 1. The inlet and outlet pipes 212 are provided with a first control valve 6 for controlling the on and off of the inlet and outlet pipes 212.

[0043] The test plate 22 fits tightly against the wall of the test cavity 211, forming an effective seal to prevent moisture from leaking through the gap at the connection. The test plate 22 can slide in the test cavity 211 in a direction perpendicular to the horizontal direction to expand or shrink the first cavity 2111 and the second cavity 2112. The test plate 22 is made of stainless steel to ensure sufficient strength and corrosion resistance. The test plate 22 is located on one side of the first cavity 2111 for mounting the material 100 to be tested. The middle portion of the test plate 22 protrudes toward the first cavity 2111 to form a boss, and a number of evenly spaced seepage holes 221 are opened on the boss, allowing water in the first cavity 2111 to flow into the second cavity 2112 through the seepage holes 221, thereby evaluating the waterproof performance of the material 100 to be tested. The aperture, spacing, and number of the seepage holes 221 can be flexibly adjusted according to different test requirements. In other embodiments, the detection box 21 and the water storage tank 1 may also be separate structures; the detection box 21 and the test plate 22 may also be made of aluminum alloy.

[0044] Preferably, a transparent liquid level observation window 213 is provided on the side wall of the test box 21, through which the interior of the second chamber 2112 can be observed, so that the test process can be observed in real time; a water purification filter element 7 is provided inside the water inlet and outlet pipes 212 for filtering impurities in the water; a sealing ring is provided around the test plate 22, and the sealing ring is a high-performance rubber sealing ring with excellent elasticity and sealing. The sealing ring is fixed to the edge of the test plate 22 through an embedded design and fits tightly with the cavity wall of the detection cavity 211 to enhance the sealing effect between the test plate 22 and the detection cavity 211, and further prevent water leakage; a water-permeable plate 9 is provided on one side of the test plate 22 for mounting the material to be tested 100. The water-permeable plate 9 is made of water-permeable ceramic material with a smooth and delicate surface and high water permeability. A test paper 10 is laid on the water-permeable plate 9. The test paper 10 changes color when it comes into contact with water, which is convenient for judging the water seepage situation.

[0045] Reference Figure 2 and Figure 3 In this embodiment, the test plate 22 is provided with a snap-fitting groove 222 around the periphery of the seepage hole 221. The fixing frame 24 is used to snap-fit ​​with the snap-fitting groove 222 on the test plate 22 to seal the test material 100 against the test plate 22. The fixing frame 24 is made of stainless steel and has chamfered edges to prevent scratching the test material 100 and affecting test accuracy. The fixing frame 24 is tightly connected to the test plate 22 via the snap-fitting groove 222, and the seepage hole 221 ensures that the test material 100 does not move during the test. In other embodiments, the fixing frame 24 has screw holes at its four corners, allowing it to be fixed to the test plate 22 with screws for increased stability. The fixing frame 24 can also be designed to be adjustable in size to accommodate test materials 100 of varying sizes, providing greater flexibility.

[0046] Reference Figure 1 and Figure 3 In this embodiment, a telescopic drive member 23 is disposed within the second chamber 2112. One end of the telescopic drive member 23 is bolted to the bottom of the second chamber 2112, and the other end is connected to the side of the test plate 22 within the second chamber 2112. Four telescopic drive members 23 are located at the four corners of the test plate 22. The telescopic drive members 23 are used to drive the test plate 22 within the detection chamber 211, thereby expanding or contracting the first chamber 2111 and the second chamber 2112. The telescopic drive members 23 can be powered by an electric push rod, a hydraulic push rod, or a pneumatic push rod. In other embodiments, the telescopic drive member 23 is connected to the test plate 22 using a hinge to allow a certain degree of swinging of the telescopic drive member 23 and reduce stress. The number of telescopic drive members 23 can be one, two, or more. The telescopic drive members 23 can also be replaced by any simple transmission mechanism capable of driving the test plate 22 to slide within the detection chamber 211, such as a rack and pinion transmission or a worm gear transmission.

[0047] Reference Figure 1 and Figure 2 In this embodiment, the scraping assembly 3 includes a first guide wheel 31, a second guide wheel 32, a scraper 33 and a pull rope 34. The first guide wheel 31 and the second guide wheel 32 are respectively installed on both sides of the test plate 22. The first guide wheel 31 and the second guide wheel 32 are both made of bearing steel, with chrome-plated surface, wear-resistant and corrosion-resistant; one end of the pull rope 34 is fixed to the top of the first chamber 2111, and the other end slides through the test plate 22 and is connected to the side of the second chamber 2112 in the detection box 21 close to the test plate 22. A sealing sleeve is provided between the test plate 22 and the pull rope 34 to ensure the sealing between the pull rope 34 and the test plate 22; the pull rope 34 adopts a round steel wire rope, and the pull rope 34 is engaged with the first guide wheel 31 and the second guide wheel 32. The first guide wheel 31 and the second guide wheel 32 are respectively located on both sides of the pull rope 34.

[0048] The scraper 33 is connected to the pull rope 34 and can slide against the surface of the material to be tested 100. The scraper 33 includes a scraping portion 331 and a magnetic portion 332. One end of the scraping portion 331 is used to slide against the material to be tested 100 to scrape bubbles on the surface of the material to be tested 100, and the other end of the scraping portion 331 is connected to the magnetic portion 332 via an adhesive; the scraping portion 331 is made of rubber, and the part that contacts the material to be tested 100 is chamfered to reduce damage to the material to be tested 100; the magnetic portion 332 is a strong magnet used to absorb metal particles in water; the scraper 33 always maintains slight contact with the surface of the material to be tested 100. In other embodiments, the pull rope 34 may also be made of high-strength nylon rope; one end of the pull rope 34 is fixed to the side of the first chamber 2111 in the detection box 21 away from the test plate 22 through a quick-release buckle, and the other end is fixed to the side of the first chamber 2111 in the detection box 21 close to the test plate 22 through a spring clip to ensure that the pull rope 34 is always in an appropriately tensioned state; the scraping portion 331 may also be made of nylon or silicone; the magnetic portion 332 may be designed to be replaceable to facilitate regular cleaning of dirt on the surface of the magnet and maintain its adsorption effect.

[0049] Reference Figure 1 and Figure 3 In this embodiment, a water collecting hopper 5 is provided in the second chamber 2112, and the water collecting hopper 5 is fixed in the second chamber 2112 by a support base fixed at the bottom of the second chamber 2112; one end of the water collecting hopper 5 is flared and faces the test plate 22 to collect water leaking from the seepage hole 221, and the other end is connected to the water storage tank 1 to reuse the recovered water; a second control valve 8 is provided between the water collecting hopper 5 and the second chamber 2112 to control the connection and disconnection between the water collecting hopper 5 and the water storage tank 1; the water collecting hopper 5 can be made of transparent acrylic or glass material as a whole, and the water collecting hopper 5 is marked with a scale, and the water seepage amount of the material to be tested 100 can be intuitively understood through the liquid level observation window 213.

[0050] Reference Figure 1 and Figure 4 In this embodiment, the tensioning assembly 4 includes a fixed shaft 41, a reel 42, and an elastic member 43. The tensioning assembly 4 is disposed within the first chamber 2111. The fixed shaft 41 is fixedly connected to the two side walls of the first chamber 2111 at both ends. The reel 42 is rotatably mounted on the fixed shaft 41 via a bearing. The end of the drawstring 34 located in the first chamber 2111, away from the test plate 22, is fixed to the reel 42. The elastic member 43 is disposed between the fixed shaft 41 and the reel 42, with its ends connected to the fixed shaft 41 and the reel 42. The elastic member 43 is a torsion spring and is used to cause the reel 42 to reel in the drawstring 34, thereby providing a certain tensioning force on the drawstring 34. In other embodiments, the tensioning assembly 4 may also be disposed within the first chamber 2111.

[0051] The implementation principle of the device for testing the waterproof performance of building materials in the embodiment of the present application is as follows: during testing, the sealing cover on the testing box 21 is opened, the material to be tested 100 is placed in the first chamber 2111 and laid on the test plate 22 to cover the water seepage hole 221, and the fixing frame 24 is used to engage with the test plate 22 to fix the material to be tested 100 on the test plate 22; at this time, the telescopic driving member 23 is controlled to retract and drive the test plate 22 to move from the first chamber 2111 to the second chamber 2112. After the first chamber 2111 expands and forms a negative pressure, water in the water storage tank 1 is drawn into the first chamber 2111 through the inlet and outlet pipes 212 to test the waterproof performance of the material to be tested 100, and the scraper 33 moves from the first side of the test plate 22 to the second side of the test plate 22 to scrape off bubbles and dust on the side of the material to be tested 100 in contact with the water flow, so as to prevent bubbles and dust from interfering with the water penetration path and penetration speed; the test When the test is completed, the first control valve 6 and the second control valve 8 are closed to form a sealed space between the first chamber 2111 and the second chamber 2112, and the telescopic driving member 23 is controlled to extend to move the test plate 22 from the second chamber 2112 to the first chamber 2111. The first chamber 2111 can be reduced to increase the pressure and the second chamber 2112 can be increased to form a negative pressure to meet the test requirements under different water pressures or shorten the test time. After the test is completed, the telescopic driving member 23 is controlled to extend to drive the test plate 22 to move from the second chamber 2112 to the first chamber 2111, so that the test plate 22 is lifted to the sealing cover at the top of the detection box 21 to facilitate the removal of the material 100 to be tested. At this time, the scraper 33 moves from the second side of the test plate 22 to the first side of the test plate 22 to scrape off the residual moisture of the material 100 to prevent the residual water on the surface of the material 100 from scattering when the material 100 to be tested is taken out and affecting the accuracy of the secondary test result. In addition, the water collecting bucket 5 can collect water leaking from the seepage hole 221 during the test, and guide the recovered water into the water storage tank 1 for recycling; the amount of water collected in the water collecting bucket 5 can be observed on the outside of the test box 21 through the liquid level observation window 213; the tensioning component 4 can always maintain the tension of the pull rope 34, so that the scraper 33 can better slide along the surface of the material to be tested 100; the test paper 10 can intuitively display the water penetration situation when the water seepage amount is very small, avoiding inaccurate test results caused by difficult observation due to small water seepage.

[0052] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A device for detecting the waterproof performance of building materials, characterized in that: include: a water storage tank, wherein the test water is stored in the water storage tank; A detection assembly comprising a detection box, a test plate, and a telescopic drive member; the detection box having a detection chamber therein; the test plate disposed within the detection chamber and slidably abutting against the chamber wall thereof to divide the detection chamber into a first chamber and a second chamber; the detection box having a water inlet and outlet pipes connecting the water storage tank and the first chamber; the test plate having a water seepage hole connecting the first chamber and the second chamber; the test plate being located on one side of the first chamber for mounting a material to be tested; The telescopic driving member is arranged in the second chamber and is used to drive the test plate to move in the detection chamber; A scraping assembly comprising a first guide wheel, a second guide wheel, a scraper, and a pull rope; the first guide wheel and the second guide wheel are respectively mounted on both sides of the test plate; one end of the pull rope is connected to a side of the first chamber in the test box away from the test plate, and the other end is connected to a side of the first chamber or the second chamber in the test box closer to the test plate; the pull rope is engaged with the first guide wheel and the second guide wheel, and the first guide wheel and the second guide wheel are respectively located on both sides of the pull rope; the scraper is connected to the pull rope and is in sliding contact with the surface of the material to be tested; When the test plate moves from the first chamber to the second chamber, the first chamber expands and draws water from the water tank, and the scraper moves from the first side of the test plate to the second side of the test plate to scrape off bubbles on the side of the test material that contacts the water flow; when the test plate moves from the second chamber to the first chamber, the first chamber shrinks and discharges water from the first chamber, and the scraper moves from the second side of the test plate to the first side of the test plate to scrape off residual water on the surface of the test material; The water inlet and outlet pipes are provided with a first control valve for controlling the on and off of the water inlet and outlet pipes, and the water inlet and outlet pipes are provided with a water purification filter element; A water collecting hopper is installed in the second chamber, one end of which is flared and faces the test plate to collect water leaking from the seepage hole, and the other end is connected to the water storage tank; a second control valve for controlling the on-off is provided between the water collecting hopper and the second chamber; The scraper includes a scraping part and a magnetic part. One end of the scraping part is used to slide against the material to be tested to scrape off bubbles on the surface of the material to be tested, and the other end is connected to the magnetic part, which is used to absorb metal particles in water.

2. A device for detecting the waterproof performance of building materials according to claim 1, characterized in that: The detection box is provided with a liquid level observation window, and the water collecting bucket is provided with a water level scale line; the water level in the water collecting bucket is observed through the liquid level observation window.

3. A device for detecting the waterproof performance of building materials according to claim 1, characterized in that: The scraping part is made of rubber, silicone or nylon, and one end of the scraping part that is in sliding contact with the material to be tested is chamfered.

4. A device for detecting the waterproof performance of building materials according to claim 1, characterized in that: It also includes a tensioning assembly, which includes a fixed shaft, a winding roller and an elastic member. The fixed shaft is fixed on the detection box and is located in the detection cavity. The winding roller is rotatably set on the fixed shaft. The pull rope is fixed on the winding roller. The elastic member is set between the fixed shaft and the winding roller to enable the winding roller to reel in the pull rope to provide a certain tensioning force for the pull rope.

5. A device for detecting the waterproof performance of building materials according to claim 1, characterized in that: The detection assembly further comprises a fixing frame. The test plate is provided with a clamping groove at the periphery of the water seepage hole. The fixing frame is used for clamping and cooperating with the clamping groove to seal the material to be tested against the test plate.

6. A device for detecting the waterproof performance of building materials according to claim 1, characterized in that: The test board is provided with a water-permeable plate on one side for mounting the material to be tested. The water-permeable plate is made of water-permeable ceramic material. A test paper is laid on the water-permeable plate, and the test paper changes color when exposed to water.

7. A device for detecting the waterproof performance of building materials according to claim 1, characterized in that: A sealing ring is provided between the test plate and the side wall of the detection cavity.

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