A concrete pore structure analyzer

Abstract

The present application relates to the technical field of concrete detection, and specifically discloses a concrete pore structure analyzer, which includes a base, a detection mechanism and a coating mechanism; the coating mechanism includes a clamping assembly, a spray assembly and a smoothing assembly; the clamping assembly includes a clamping block and a double-headed screw, the clamping block is provided with two and both are slidably arranged on the base, the double-headed screw is rotatably connected to the base, and the two ends of the double-headed screw are respectively threadedly connected to the two clamping blocks; the spray assembly includes a liquid storage tank, a pump body and a spray pipe, the liquid storage tank is used to store a suspension containing zinc oxide, and the pump body is connected between the liquid storage tank and the spray pipe; the smoothing assembly includes a scraper and a power telescopic member, the scraper is slidably arranged on the base, and the power telescopic member is connected to the scraper. The present application can improve the uniformity of the zinc oxide material coating, thereby better improving the contrast, enhancing the subsequent imaging detection effect, and improving the convenience and accuracy of the detection.

Description

Technical Field

[0001] The present application relates to the technical field of concrete detection, and in particular to a concrete pore structure analyzer. Background Art

[0002] In recent years, as the application scope of machine-made sand becomes more and more extensive, its usage has increased year by year. Modern machine-made sand concrete uses machine-made sand and adds industrial waste such as fly ash and slag powder, which makes machine-made sand concrete embark on a green and low-carbon development path. At the same time, the configuration concept of low water-cement ratio and low cement dosage is adopted, which makes modern machine-made sand concrete further high-performance. Among them, durability is an important evaluation parameter of concrete. The size and distribution of pores in concrete have a significant impact on the durability of concrete, especially the freeze-thaw resistance. Therefore, detecting and analyzing the pore structure on the surface of hardened concrete is of great significance for evaluating the performance of concrete materials.

[0003] When conducting pore analysis of concrete, a concrete pore structure analyzer is used. The concrete pore structure analyzer includes a base, an imaging mechanism and a fixture arranged on the base. During the test, a concrete cutter is first used to cut the concrete block to cut out a sheet of concrete test block of the required size; then the test surface of the test block is polished in turn by using diamond grinding discs of different specifications, and then rinsed after polishing to wash away the powder and debris on the surface; after drying, zinc oxide powder is applied to the surface of the test block, and the zinc oxide powder must completely cover the micron-level pores of the concrete; then the test block is placed in the fixture, and the pore structure on the slice is recorded and observed by the imaging mechanism.

[0004] During the above detection process, zinc oxide powder needs to be applied on the surface of the concrete test block so that the zinc oxide powder is embedded in the pore structure on the test block, thereby enhancing the contrast of the test block surface and helping to ensure the subsequent observation effect. Uneven application of zinc oxide powder is likely to affect subsequent observations, so a detection device that can improve the uniformity of zinc oxide material application is needed. Summary of the invention

[0005] In order to improve the uniformity of zinc oxide material application, the present application provides a concrete pore structure analyzer.

[0006] The concrete pore structure analyzer provided in this application adopts the following technical solution: A concrete pore structure analyzer comprises a base and a detection mechanism and a smearing mechanism arranged on the base; The detection mechanism includes a fixing component and an imaging component, wherein the fixing component is used to fix the concrete test block to be tested, and the imaging component is used to perform imaging detection on the fixed concrete test block; The coating mechanism includes a clamping assembly, a spraying assembly and a smoothing assembly; The clamping assembly comprises a clamping block and a double-headed screw, wherein two clamping blocks are provided and are both slidably arranged on the base, the double-headed screw is rotatably connected to the base, the thread directions of the two ends of the double-headed screw are opposite, and the two ends of the double-headed screw are respectively threadedly connected to the two clamping blocks; The spray assembly includes a liquid storage tank, a pump body and a spray pipe, wherein the liquid storage tank is used to store a suspension containing zinc oxide, the pump body is connected between the liquid storage tank and the spray pipe, the spray pipe is provided with a spray port facing the concrete test block in the clamping assembly, and the spray pipe is slidably arranged; The smoothing assembly includes a scraper and a power telescopic member. The scraper is slidably arranged on a base. One end of the scraper is used to abut against the surface to be tested of the concrete test block in the clamping assembly. The movable end of the power telescopic member is connected to the scraper.

[0007] By adopting the above technical solution, the zinc oxide particles are made into a suspension, which can make the suspension contact with the surface of the concrete test block more fully; the above structure can spray and apply the zinc oxide suspension to the surface to be tested of the concrete test block, so that the zinc oxide particles can be evenly distributed on the surface of the concrete test block, so that the zinc oxide particles can be better embedded in the pores of the concrete test block, thereby improving the contrast, which is conducive to enhancing the subsequent imaging observation effect.

[0008] Optionally, the spray pipe is fixedly connected to the movable end of the power telescopic member.

[0009] By adopting the above technical solution, the power telescopic member can not only drive the scraper to slide back and forth, but also drive the spray pipe to slide back and forth, so the sliding of the spray pipe does not require an additional power source, which is more energy-efficient.

[0010] Optionally, the scraper includes a fixed part, a movable part and a spring, the fixed part is fixedly connected to the movable end of the power telescopic part, one end of the movable part is slidably arranged in the fixed part, and the other end of the movable part is used to abut against the surface to be tested of the concrete test block, and the spring is connected between the fixed part and the movable part, and the spring makes the movable part tend to slide toward the side away from the fixed part.

[0011] By adopting the above technical solution, the spring makes the bottom end of the movable part press against the top surface of the concrete test block, so that the movable part and the surface of the concrete test block can be better contacted, thereby enhancing the leveling effect; in addition, due to the sliding setting of the movable part and the connection of the spring, the device can be applied to concrete test blocks of different thicknesses, and thus has stronger applicability.

[0012] Optionally, arc surfaces are provided on both sides of the movable portion away from one end of the fixed portion.

[0013] By adopting the above technical solution, the damage to the surface of the concrete test block can be reduced during the sliding of the scraper, the softness and stability of the scraping operation can be improved, the zinc oxide suspension can be applied more evenly, and the problem of uneven local application or scratches on the test block caused by the sharp edge of the scraper can be avoided, thereby improving the accuracy of the test results.

[0014] Optionally, a drying mechanism is provided on the base, and the drying mechanism includes a hot air component and an air duct, the air duct is connected to the air outlet side of the hot air component, and the air duct is provided with an air outlet facing the clamping component.

[0015] By adopting the above technical solution, the hot air generated by the hot air component is transmitted to the air outlet through the air duct and blown directly on the surface of the concrete test block, thereby accelerating the evaporation of water, reducing the residual suspension, and ensuring the dryness of the test block surface. At the same time, the zinc oxide particles embedded in the pores of the concrete test block are retained, avoiding image blur or unclear pore structure identification due to residual moisture, which helps to improve the clarity and accuracy of subsequent imaging detection.

[0016] Optionally, a stirring assembly is provided in the liquid storage tank, and the stirring assembly includes a stirring rod, a stirring blade and a fan blade. The stirring rod is rotatably connected to the liquid storage tank, and the stirring blade and the fan blade are fixedly connected to the stirring rod. The stirring blade is located in the liquid storage tank and is used to stir the zinc oxide suspension in the liquid storage tank. The fan blade is located outside the liquid storage tank. A connecting pipe is provided on the air duct, and the opening of the connecting pipe faces the fan blade, so that the wind discharged from the connecting pipe can drive the stirring rod to rotate through the fan blade.

[0017] By adopting the above technical solution, the stirring component can continuously stir the zinc oxide suspension during storage, prevent the zinc oxide particles from settling, ensure the uniform distribution of the zinc oxide particles in the sprayed suspension, and improve the coating quality of the zinc oxide particles; the wind discharged from the air duct is used to drive the fan blades to rotate, and then drive the stirring rod to rotate, which not only realizes the automatic stirring function, but also effectively reduces energy consumption.

[0018] Optionally, a cleaning mechanism is provided on the base, and the cleaning mechanism includes a negative pressure pipe and a filter. The negative pressure pipe is provided with a suction port toward the clamping assembly, and the negative pressure pipe is connected to the filter. The filter is connected to the air inlet side of the hot air assembly, so that when the hot air assembly is working, the suspended matter adhered to the scraper sliding to the end of the concrete test block can be sucked into the filter through the negative pressure pipe.

[0019] By adopting the above technical solution, the cleaning mechanism can use the negative pressure pipe to suck the suspended matter that slides to the end of the concrete test block and the suspended matter that adheres to the bottom of the scraper into the filter when the hot air component is working, which can effectively prevent the suspended matter from falling again during the subsequent sliding of the scraper, thereby ensuring the flatness of the surface after being smoothed by the scraper, which helps to ensure the accuracy of subsequent inspections; since the power for suction by the negative pressure pipe comes from the hot air component, it helps to reduce energy consumption; in addition, the negative pressure pipe can inhale a portion of the hot air, and the hot air is sent to the hot air component after being filtered by the filter, thereby recycling the hot air, which can reduce the consumption required for heating the hot air component and help to further reduce energy consumption.

[0020] Optionally, an adjustment component is provided on one side of the negative pressure tube, and the adjustment component includes a baffle, a rotating rod, an active rack, a driven gear and a torsion spring. The baffle is arranged in an arc shape, and the baffle is arranged on the inner wall of the negative pressure tube for sliding along the circumference of the negative pressure tube. The baffle is used to control the opening and closing of the suction port. The rotating rod is rotatably connected to the negative pressure tube, the rotating rod and the baffle are fixedly connected, the active rack is fixedly connected to the scraper, and the driven gear is coaxially arranged on the rotating rod. The driven gear is used to mesh with the active rack, so that when the scraper slides to the end of the concrete test block, the baffle can be driven to rotate to open the suction port. The torsion spring is connected between the rotating rod and the negative pressure tube, so that the baffle closes the suction port under normal circumstances.

[0021] By adopting the above technical solution, the adjustment component can automatically open the suction port of the negative pressure tube when the scraper slides to the end of the concrete test block, thereby effectively absorbing the suspended matter at the end of the concrete test block and the suspended matter adhering to the bottom of the scraper, preventing the suspended matter adhering to the scraper from falling again and affecting the leveling effect, thereby improving the detection accuracy; when the scraper slides to the end of the concrete test block, the suction port is opened, and at this time the baffle can block the suspended liquid in the central area of ​​the concrete test block to prevent the suspended liquid in the central area from being sucked in; when the scraper slides in the opposite direction, the baffle closes the suction port to avoid affecting the suspended liquid in the central area of ​​the surface of the concrete test block, which helps to ensure the embedding effect of the zinc oxide particles.

[0022] Optionally, a protective cover is provided on the base on the outer side of the drying mechanism.

[0023] By adopting the above technical solution, the protective cover can effectively prevent the hot air from leaking out, enhance the circulation of the hot air, and help improve the drying efficiency.

[0024] Optionally, a booster fan is provided between the filter and the hot air assembly, and an air inlet side of the booster fan is connected to the filter.

[0025] By adopting the above technical solution, strengthening the setting of the fan can effectively improve the exhaust efficiency of the hot air component, ensuring that the negative pressure pipe can more quickly suck the suspended matter adhered to the end of the concrete test block and the bottom of the scraper into the filter; at the same time, strengthening the fan can also increase the blowing intensity of the hot air component, speed up the drying speed of the surface of the concrete test block, shorten the detection time, and improve work efficiency.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Make the zinc oxide particles into a suspension, and then evenly apply it to the surface of the concrete test block by spraying and smoothing, which helps to enhance the coating effect, thereby better improving the contrast and enhancing the subsequent imaging observation effect.

[0027] 2. The cleaning component can suck the suspended matter pushed to the end of the concrete test block by the scraper and the suspended matter adhered to the bottom of the scraper, and store them in the filter, thereby reducing the impact of this part of the suspended matter on the subsequent leveling effect of the scraper; at the same time, this part of the suspended matter can be collected for recycling and reducing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 This is a schematic diagram of the structure of the coating mechanism used to illustrate the embodiment 1 of the present application; Figure 3 is a cross-sectional view of Example 1 of the present application; Figure 4 This is a schematic diagram of the structure of the drying mechanism used in Example 1 of the present application; Figure 5 is a cross-sectional view of Example 1 of the present application for showing a cleaning mechanism; Figure 6 is a cross-sectional view of Example 1 of the present application for illustrating an adjustment component; Figure 7 yes Figure 6 A magnified schematic diagram of center A.

[0029] Figure numerals: 1, base; 2, fixed assembly; 21, first linear motor; 22, second linear motor; 23, mounting plate; 24, fixed fixture; 25, movable fixture; 3, imaging assembly; 31, support frame; 32, microscope lens; 33, electronic camera; 4, clamping assembly; 41, clamping block; 42, double-headed screw; 421, knob; 5, spray assembly; 51, liquid storage tank; 52, pump body; 53, spray pipe; 531, spray port; 6, smoothing assembly; 61, scraper; 611, fixed part; 612, movable part; 6 121. curved surface; 613. spring; 62. power telescopic part; 7. drying mechanism; 71. hot air assembly; 72. air duct; 721. air outlet; 722. connecting pipe; 8. stirring assembly; 81. stirring rod; 82. stirring blade; 83. fan blade; 9. cleaning mechanism; 91. negative pressure pipe; 911. suction port; 92. filter; 10. adjustment assembly; 101. baffle; 102. rotating rod; 103. active rack; 104. driven gear; 105. torsion spring; 11. guide rod; 12. hose; 13. concrete test block. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-7 This application is described in further detail.

[0031] Example 1 At present, machine-made sand adopts the configuration concept of low water-binder ratio and low cement dosage, which makes modern machine-made sand concrete further high-performance. However, there is little research on its strength development law, and the quality control of ready-mixed concrete enterprises requires a quantitative understanding of this law. By using machine-made sand and other ground materials, based on iron tailings machine-made sand with a stone powder content of 2% to 4%, and using the concrete mix ratio commonly used by regional ready-mixed concrete enterprises, the development law of the mechanical properties of machine-made sand concrete is studied and analyzed, which can provide reference and reference for concrete enterprises to predict and control concrete quality.

[0032] The research on the development law of mechanical properties of modern machine-made sand concrete includes the research on the development law of compressive strength of C25~C60 machine-made sand concrete with different mineral admixtures, the research on the influence of mineral admixtures in machine-made sand concrete on concrete strength, the research on free shrinkage of machine-made sand concrete, and the analysis of pore structure of C30 and C50 concrete.

[0033] In the analysis of concrete pore structure, it is necessary to cut the concrete into slices at a specified age after forming, and use the hardened concrete pore structure analyzer to analyze the pore structure parameters and bubble distribution characteristics of the slices. In the test, the four pore structure parameters of C30 and C50 concrete at 7d, 28d, and 60d were mainly tested, namely, pore specific surface area, average bubble chord length, air content, and bubble spacing coefficient. Pore specific surface area refers to the surface area of ​​pores per unit volume of concrete; average bubble chord length is the ratio of the sum of bubble chord lengths to the sum of bubble numbers; air content is the percentage of pore volume per unit volume of the specimen; bubble spacing coefficient refers to the maximum distance between any point in the slurry and the spherical surface of adjacent pore bubbles. At a certain air content, the smaller the bubble size, the smaller the bubble spacing coefficient. The number of bubbles is the total number of bubbles per unit area, and is used together with other parameters to analyze the pore structure of concrete.

[0034] After the specimen reaches the test age, it is cut using a concrete cutter, and then the test surface is polished in sequence using diamond grinding discs of different specifications. After polishing, it is rinsed to wash away the powder and debris on the surface, and then zinc oxide powder is applied on the surface of the slice after drying. The zinc oxide powder needs to completely cover the micron-level pores of the concrete, and then the slice is placed on the tester for testing. In order to make the zinc oxide powder applied more evenly, the embodiment of the present application discloses a concrete pore structure analyzer.

[0035] Reference Figure 1 The concrete pore structure analyzer includes a base 1 and a detection mechanism disposed on the base 1. The detection mechanism includes a fixing component 2 and an imaging component 3. The fixing component 2 is disposed on the top surface of the base 1, and the fixing component 2 can clamp and fix the concrete test block 13 to be detected; the imaging component 3 is disposed above the fixing component 2, and can perform imaging detection on the fixed concrete test block 13.

[0036] The fixing assembly 2 includes a first linear motor 21, a second linear motor 22, a mounting plate 23, a fixing fixture 24 and a movable fixture 25. The first linear motor 21 and the second linear motor 22 are both arranged horizontally, and the length directions of the first linear motor 21 and the second linear motor 22 are perpendicular.

[0037] The fixed end of the first linear motor 21 is fixedly connected to the base 1, and the fixed end of the second linear motor 22 is fixedly connected to the movable end of the first linear motor 21. The mounting plate 23 is fixedly connected to the movable end of the second linear motor 22; therefore, the mounting plate 23 can slide in the horizontal direction. The fixed clamp 24 and the movable clamp 25 are both arranged on the top surface of the mounting plate 23, and the fixed clamp 24 and the movable clamp 25 are arranged in parallel; the fixed clamp 24 is fixedly connected to the mounting plate 23, and the movable clamp 25 is slidably arranged on the mounting plate 23, and the mounting plate 23 is also provided with an electric push rod for driving the movable clamp 25 to move. Therefore, the concrete test block 13 to be tested is placed on the top surface of the mounting plate 23, and the concrete test block 13 is located between the fixed clamp 24 and the movable clamp 25, and then the electric push rod drives the movable clamp 25 to move, so that the fixed clamp 24 and the movable clamp 25 are respectively pressed against the two sides of the concrete test block 13, thereby fixing the concrete test block 13, which helps to improve the stability of the subsequent imaging observation process.

[0038] The imaging assembly 3 includes a support frame 31, a microscope lens 32 and an electronic camera 33. The support frame 31 is arranged on the top surface of the base 1, the microscope lens 32 is arranged on the support frame 31, and the microscope lens 32 is located above the fixing assembly 2; the electronic camera 33 is fixedly connected to the support frame 31, and the electronic camera 33 is located above the microscope lens 32. Therefore, after the concrete test block 13 is clamped and fixed, the concrete test block 13 can be magnified by the microscope lens 32, and then the image can be projected onto the display by the electronic camera 33, so as to realize the observation of the pores on the concrete test block 13.

[0039] Reference Figure 2 Before fixing and observing the concrete test block 13, it is necessary to first apply zinc oxide powder on the surface of the concrete test block 13 to improve the contrast and facilitate subsequent observation. In order to facilitate the application of zinc oxide, a coating mechanism is also provided on the base 1. The coating mechanism includes a clamping component 4, a spraying component 5 and a smoothing component 6.

[0040] The clamping assembly 4 includes a clamping block 41 and a double-headed screw 42. Two clamping blocks 41 are provided, and both are slidably arranged on the base 1. A guide rod 11 is fixedly connected to the base 1, and the guide rod 11 is arranged horizontally; the double-headed screw 42 is parallel to the guide rod 11, and the double-headed screw 42 is rotatably connected to the base 1 around its own axis. A knob 421 is fixedly connected to one end of the double-headed screw 42 to facilitate the rotation of the double-headed screw 42. The guide rod 11 is slidably inserted into the clamping block 41, so that the clamping block 41 and the guide rod 11 are slidably connected; the thread directions of the two ends of the double-headed screw 42 are opposite, and the two ends of the double-headed screw 42 are respectively threadedly connected to the two clamping blocks 41. The concrete test block 13 is placed between the two clamping blocks 41, and the two clamping blocks 41 can be rotated to slide in the opposite direction, thereby clamping or loosening the concrete test block 13. After the concrete test block 13 is clamped, subsequent spraying and smoothing treatment can be carried out.

[0041] The thread lead angle of the double-headed screw 42 is smaller than the equivalent friction angle, so the double-headed screw 42 has a self-locking capability and can achieve clamping and fixing of the concrete test block 13 .

[0042] Reference Figure 2 and Figure 3 The spray assembly 5 includes a liquid storage tank 51, a pump body 52 and a spray pipe 53. The liquid storage tank 51 is fixedly connected to the top surface of the base 1, and a suspension containing zinc oxide particles is stored in the liquid storage tank 51. The zinc oxide suspension contains zinc oxide particles and a dispersant, so that the zinc oxide particles can be better dispersed in the suspension, which is convenient for ensuring the subsequent coating effect. The pump body 52 is fixedly connected to the liquid storage tank 51, the water inlet of the pump body 52 is connected to the inside of the liquid storage tank 51, and the water outlet of the pump body 52 and the spray pipe 53 are connected by a hose 12. The bottom of the spray pipe 53 is provided with a plurality of spray ports 531 along its length direction. Therefore, the pump body 52 can deliver the zinc oxide suspension in the liquid storage tank 51 to the spray pipe 53, and then the suspension is sprayed downward from the spray ports 531 on the spray pipe 53 to the top surface of the concrete test block 13. The spray pipe 53 is slidably arranged, so that when the spray pipe 53 slides, a layer of zinc oxide suspension can be sprayed on the surface of the concrete test block 13 , so that the zinc oxide suspension evenly covers the surface to be tested of the concrete test block 13 .

[0043] The smoothing assembly 6 includes a scraper 61 and a power telescopic member 62. The power telescopic member 62 is an electric push rod, and may also be a cylinder in other embodiments; the power telescopic member 62 is horizontally arranged, and the fixed end of the power telescopic member 62 is fixedly connected to the base 1. The scraper 61 includes a fixed portion 611, a movable portion 612 and a spring 613. The fixed portion 611 is vertically fixedly connected to the movable end of the power telescopic member 62, and a mounting groove for accommodating the movable portion 612 is provided at the bottom of the fixed portion 611; the top end of the movable portion 612 is slidably arranged in the mounting groove along the vertical direction, and the bottom end of the movable portion 612 is used to abut against the top surface of the concrete test block 13. The spring 613 is fixedly connected between the top end of the movable portion 612 and the bottom wall of the mounting groove. After placing the concrete test block 13 on the base 1, rotate the double-headed screw 42 to clamp and fix the concrete test block 13; then the spring 613 can make the bottom end of the movable part 612 press against the top surface of the concrete test block 13, and then the movable end of the power telescopic part 62 slides to drive the movable part 612 to slide, thereby achieving uniform application of the zinc oxide suspension on the top surface of the concrete test block 13.

[0044] The two sides of the bottom of the movable portion 612 are both provided with arc surfaces 6121 , so that the movable portion 612 pressed against the surface of the concrete test block 13 is not likely to scratch the surface of the concrete test block 13 when sliding.

[0045] Furthermore, the spray pipe 53 is arranged along the length direction of the scraper 61, and the spray pipe 53 is fixedly connected to one side of the fixed part 611, so that when the power telescopic member 62 drives the scraper 61 to slide, the spray pipe 53 can also slide at the same time, thereby achieving spraying and smearing of the concrete test block 13.

[0046] Reference Figure 4 and Figure 5 In order to ensure the subsequent imaging effect, a drying mechanism 7 is also provided on the base 1, and the drying mechanism 7 includes a hot air component 71 and an air duct 72. The hot air component 71 includes a fan and a heating wire, which can blow out hot air for drying. The air duct 72 is fixedly connected to the base 1, and the air duct 72 is connected to the air outlet side of the fan; the air duct 72 is located above the scraper 61, and an air outlet 721 is provided at the bottom of the air duct 72. Therefore, the hot air blown out by the hot air component 71 can be discharged downward through the air duct 72, thereby heating and drying the concrete test block 13 located in the clamping assembly 4, which helps to increase the drying speed of the suspension on the surface of the concrete test block 13, thereby shortening the detection time.

[0047] During the reciprocating sliding process of the scraper 61, the suspension on the surface of the concrete test block 13 can be smoothed. During this process, the push plate can push the particles in the suspension on the surface of the concrete test block 13 to the two sides of the concrete test block 13. At the same time, more particles are easily adhered to the bottom of the scraper 61. These particles are easy to fall off during the subsequent sliding of the scraper 61, thereby adding many impurities to the smoothed surface, thereby affecting the smoothing effect. In order to reduce the influence of the particles pushed to the edge of the concrete test block 13 on the smoothing effect of the scraper 61, a cleaning mechanism 9 for cleaning the bottom end of the scraper 61 is also provided on the base 1.

[0048] The cleaning mechanism 9 includes a negative pressure pipe 91 and a filter 92. Two negative pressure pipes 91 are provided, and are respectively located on the side away from each other of the two clamping blocks 41; the length direction of the negative pressure pipe 91 is parallel to the length direction of the clamping block 41, and a plurality of suction ports 911 are provided on the negative pressure pipe 91 along its own length direction, and the suction ports 911 face the clamping block 41. Both negative pressure pipes 91 are connected to the air inlet side of the hot air assembly 71. The filter 92 is connected between the negative pressure pipe 91 and the hot air assembly 71. Therefore, when the hot air assembly 71 is working, it can not only blow and dry the suspension on the surface of the concrete test block 13 through the air duct 72, but also form a negative pressure in the negative pressure pipe 91, so that the particles pushed to the end of the concrete test block 13 by the scraper 61 are sucked into the filter 92, and the particles adhering to the scraper 61 can be sucked away, thereby ensuring the smoothing effect of the scraper 61 in the subsequent sliding process.

[0049] In this embodiment, the negative pressure tube 91 is fixed; in other embodiments, the position of the negative pressure tube 91 can also be adjusted to adapt to concrete test blocks 13 of different sizes.

[0050] Reference Figure 6 and Figure 7Furthermore, an adjustment component 10 for controlling the opening and closing of the suction port 911 is provided on one side of the negative pressure tube 91. The adjustment component 10 includes a baffle 101, a rotating rod 102, an active rack 103, a driven gear 104 and a torsion spring 105. The baffle 101 is an arc-shaped plate, and the curvature of the baffle 101 is adapted to the curvature of the inner wall of the negative pressure tube 91; the baffle 101 is arranged along the length direction of the negative pressure tube 91, and the baffle 101 is slidably arranged on the inner wall of the negative pressure tube 91 along the circumferential direction of the negative pressure tube 91, so that the opening and closing of the suction port 911 can be controlled by driving the baffle 101 to rotate. The rotating rod 102 is arranged at one end of the negative pressure tube 91, and the rotating rod 102 is arranged along the axial direction of the negative pressure tube 91; one end of the rotating rod 102 penetrates into the interior of the negative pressure tube 91, and is fixedly connected to the end of the baffle 101; the other end of the rotating rod 102 is located outside the negative pressure tube 91, and is coaxially fixedly connected to the driven gear 104; the rotating rod 102 and the end of the negative pressure tube 91 are rotatably connected. The torsion spring 105 is fixedly connected between the rotating rod 102 and the negative pressure tube 91. Under normal conditions, the torsion spring 105 is in an untwisted state, and the baffle 101 blocks the suction port 911, thereby closing the suction port 911.

[0051] The active rack 103 is fixedly connected to the fixed portion 611 of the scraper 61, and is arranged along the sliding direction of the scraper 61; the active rack 103 is used to mesh with the driven gear 104. When the scraper 61 slides, it can drive the active rack 103 to slide. When the scraper 61 slides to the end of the concrete test block 13, the active rack 103 and the driven gear 104 are meshed, so that the driven gear 104 can rotate. The driven gear 104 drives the baffle 101 to rotate through the rotating rod 102, so that the baffle 101 moves to the side away from the suction port 911, and the suction port 911 is opened. When the scraper 61 slides in the reverse direction, the baffle 101 rotates in the reverse direction to close the suction port 911. Therefore, after the scraper 61 slides to the end of the concrete test block 13, the suction port 911 can be opened to achieve the suction of particles at the end of the concrete test block 13. At this time, the scraper 61 can be blocked at the opening of the suction port 911, thereby avoiding the suction of suspended particles in the central area of ​​the surface of the concrete test block 13, which helps to ensure the subsequent imaging quality.

[0052] Reference Figure 6In order to prevent the zinc oxide suspension in the liquid storage tank 51 from settling, a stirring assembly 8 is further provided in the liquid storage tank 51, and the stirring assembly 8 includes a stirring rod 81, a stirring blade 82 and a fan blade 83. The stirring rod 81 is rotatably connected to the liquid storage tank 51, and a plurality of stirring blades 82 and fan blades 83 are provided and arranged in a circular array; the stirring blade 82 is fixedly connected to one end of the stirring rod 81 located in the liquid storage tank 51, and the fan blade 83 is fixedly connected to one end of the stirring rod 81 located outside the liquid storage tank 51. A connecting pipe 722 is fixedly connected to the air duct 72, and the connecting pipe 722 is connected to the air duct 72, and the opening of the connecting pipe 722 faces the fan blade 83. Therefore, the wind blown out from the hot air component 71 can also be discharged outward through the connecting pipe 722, so that the fan blade 83 rotates, and the fan blade 83 drives the stirring rod 81 and the stirring blade 82 to rotate, thereby stirring the suspension in the liquid storage tank 51, which can make the zinc oxide particles in the suspension more evenly distributed, thereby ensuring the subsequent spraying effect, and making the zinc oxide particles sprayed on the concrete test block 13 more evenly distributed.

[0053] The implementation principle of Example 1 is as follows: first, lift the movable part 612 upward, and then place the cut concrete test block 13 between the two clamping blocks 41; loosen the movable part 612, and the spring 613 can make the movable part 612 press against the top surface of the concrete test block 13. Then rotate the double-headed screw 42 so that the two clamping blocks 41 slide toward the side close to each other, thereby clamping and fixing the concrete test block 13. Then start the hot air component 71, and the wind blown out by the hot air component 71 can be discharged outward through the connecting pipe 722, so that the fan blade 83 rotates, and the fan blade 83 drives the stirring rod 81 and the stirring blade 82 to rotate, thereby stirring the zinc oxide suspension in the liquid storage tank 51, so that the zinc oxide particles are distributed more evenly.

[0054] Then the power telescopic member 62 is started, and the power telescopic member 62 drives the scraper 61 and the spray pipe 53 to slide back and forth, and the scraper 61 and the spray pipe 53 always slide above the concrete test block 13. The spray pipe 53 can spray the zinc oxide suspension onto the top surface of the concrete test block 13; at the same time, the movable portion 612 of the scraper 61 always presses against the surface of the concrete test block 13, and the scraper 61 can smooth the suspension sprayed on the concrete test block 13, so that the zinc oxide particles can be better embedded in the pores of the concrete test block 13, thereby improving the contrast and facilitating subsequent observation.

[0055] During the sliding process of the scraper 61, the active rack 103 can be driven to slide. When the scraper 61 slides to the end of the concrete test block 13, the active rack 103 meshes with the driven gear 104, so that the driven gear 104 can rotate, thereby rotating the rotating rod 102 and the baffle 101, so that the baffle 101 moves to the side away from the suction port 911, and the suction port 911 is opened. At this time, under the negative pressure of the negative pressure tube 91, the suspended particles pushed to the end of the concrete test block 13 and the particles adhered to the bottom of the scraper 61 will be sucked into the filter 92, thereby cleaning the end of the concrete test block 13 and the bottom of the scraper 61, avoiding the accumulation of particles from affecting the subsequent leveling process of the scraper 61, thereby ensuring the leveling effect and improving the subsequent imaging quality.

[0056] After the scraper 61 slides back and forth several times, the spraying of the spray pipe 53 can be stopped, and the scraper 61 continues to slide back and forth, so as to smooth and dry the suspension on the concrete test block 13. After the drying is completed, the concrete test block 13 is taken out, and then the concrete test block 13 is placed on the mounting plate 23, and the electric push rod drives the movable clamp 25 to slide, so as to clamp and fix the concrete test block 13. Then, the position of the mounting plate 23 is adjusted by the first linear motor 21 and the second linear motor 22, so that the concrete test block 13 on the mounting plate 23 is facing the microscope lens 32. Then the electronic camera 33 can shoot the image displayed by the microscope lens 32 and project it onto the display, so that the test personnel can observe and record the situation of the pores.

[0057] Example 2 The difference between this embodiment and embodiment 1 is that in this embodiment, a protective cover is provided on the outside of the drying mechanism 7, so that the hot air can circulate better in the protective cover, thereby improving the drying effect and drying rate. A door is hinged on one side of the protective cover to facilitate the placement and removal of the concrete test block 13.

[0058] In addition, a booster fan is provided between the filter 92 and the hot air assembly 71. The air inlet side of the booster fan is connected to the filter 92, and the air outlet side of the booster fan is connected to the air inlet side of the hot air assembly 71, thereby helping to enhance the suction force of the negative pressure pipe 91, thereby enhancing the suction and cleaning effect of the particulate matter accumulated at the end of the concrete specimen 13.

[0059] The above are optional embodiments of the present application, and are not intended to limit the protection scope 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 protection scope of the present application.

Claims

1. A concrete pore structure analyzer, characterized in that: It comprises a base (1) and a detection mechanism and a coating mechanism arranged on the base (1); The detection mechanism comprises a fixing component (2) and an imaging component (3), wherein the fixing component (2) is used to fix a concrete test block (13) to be tested, and the imaging component (3) is used to perform imaging detection on the fixed concrete test block (13); The coating mechanism comprises a clamping component (4), a spraying component (5) and a smoothing component (6); The clamping assembly (4) comprises a clamping block (41) and a double-headed screw (42), wherein two clamping blocks (41) are provided and are both slidably arranged on the base (1), and the double-headed screw (42) is rotatably connected to the base (1), and the thread directions of the two ends of the double-headed screw (42) are opposite, and the two ends of the double-headed screw (42) are respectively threadedly connected to the two clamping blocks (41); The spray assembly (5) comprises a liquid storage tank (51), a pump body (52) and a spray pipe (53); the liquid storage tank (51) is used to store a suspension containing zinc oxide; the pump body (52) is connected between the liquid storage tank (51) and the spray pipe (53); the spray pipe (53) is provided with a spray port (531) facing the concrete test block (13) in the clamping assembly (4); and the spray pipe (53) is slidably arranged; The smoothing assembly (6) comprises a scraper (61) and a power telescopic member (62); the scraper (61) is slidably disposed on the base (1); one end of the scraper (61) is used to abut against a surface to be tested of a concrete test block (13) in the clamping assembly (4); and the movable end of the power telescopic member (62) is connected to the scraper (61).

2. A concrete pore structure analyzer according to claim 1, characterized in that: The spray pipe (53) is fixedly connected to the movable end of the power telescopic member (62).

3. A concrete pore structure analyzer according to claim 1, characterized in that: The scraper (61) comprises a fixed portion (611), a movable portion (612) and a spring (613); the fixed portion (611) is fixedly connected to the movable end of the power telescopic member (62); one end of the movable portion (612) is slidably disposed in the fixed portion (611); the other end of the movable portion (612) is used to abut against a surface to be tested of a concrete test block (13); the spring (613) is connected between the fixed portion (611) and the movable portion (612); the spring (613) causes the movable portion (612) to have a tendency to slide towards a side away from the fixed portion (611).

4. A concrete pore structure analyzer according to claim 3, characterized in that: Arc surfaces (6121) are provided on both sides of one end of the movable portion (612) away from the fixed portion (611).

5. The concrete pore structure analyzer according to claim 1, characterized in that: The base (1) is provided with a drying mechanism (7), the drying mechanism (7) comprising a hot air component (71) and an air duct (72), the air duct (72) being connected to the air outlet side of the hot air component (71), and the air duct (72) being provided with an air outlet (721) facing the clamping component (4).

6. A concrete pore structure analyzer according to claim 5, characterized in that: The liquid storage tank (51) is provided with a stirring assembly (8), the stirring assembly (8) comprising a stirring rod (81), a stirring blade (82) and a fan blade (83); the stirring rod (81) is rotatably connected to the liquid storage tank (51); the stirring blade (82) and the fan blade (83) are both fixedly connected to the stirring rod (81); the stirring blade (82) is located in the liquid storage tank (51) and is used to stir the zinc oxide suspension in the liquid storage tank (51); the fan blade (83) is located outside the liquid storage tank (51); a connecting pipe (722) is provided on the air duct (72); the opening of the connecting pipe (722) faces the fan blade (83), so that the wind discharged from the connecting pipe (722) can drive the stirring rod (81) to rotate through the fan blade (83).

7. A concrete pore structure analyzer according to claim 5, characterized in that: The base (1) is provided with a cleaning mechanism (9), the cleaning mechanism (9) comprising a negative pressure pipe (91) and a filter (92), the negative pressure pipe (91) being provided with a suction port (911) facing the clamping assembly (4), the negative pressure pipe (91) being connected to the filter (92), and the filter (92) being connected to the air inlet side of the hot air assembly (71), so that when the hot air assembly (71) is in operation, suspended matter adhering to the scraper (61) sliding to the end of the concrete test block (13) can be sucked into the filter (92) through the negative pressure pipe (91).

8. A concrete pore structure analyzer according to claim 7, characterized in that: An adjustment component (10) is provided on one side of the negative pressure tube (91), and the adjustment component (10) comprises a baffle (101), a rotating rod (102), an active rack (103), a driven gear (104) and a torsion spring (105). The baffle (101) is arranged in an arc shape, and the baffle (101) is slidably arranged on the inner wall of the negative pressure tube (91) along the circumference of the negative pressure tube (91). The baffle (101) is used to control the opening and closing of the suction port (911). The rotating rod (102) is rotatably connected to the negative pressure tube (91), and the rotating rod (102) and the baffle are arranged in an arc shape. The driving rack (103) is fixedly connected to the scraper (61), the driven gear (104) is coaxially arranged on the rotating rod (102), and the driven gear (104) is used to mesh with the driving rack (103), so that when the scraper (61) slides to the end of the concrete test block (13), the baffle (101) can be driven to rotate so that the suction port (911) is opened, and the torsion spring (105) is connected between the rotating rod (102) and the negative pressure tube (91), so that the baffle (101) closes the suction port (911) under normal conditions.

9. A concrete pore structure analyzer according to claim 8, characterized in that: A protective cover is provided on the base (1) on the outside of the drying mechanism (7).

10. A concrete pore structure analyzer according to claim 8, characterized in that: A booster fan is provided between the filter (92) and the hot air assembly (71), and an air inlet side of the booster fan is connected to the filter (92).

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