Permeable concrete water permeability detection equipment and detection method thereof

Abstract

The invention provides pervious concrete water permeability detection equipment and a detection method thereof.The cleaning and scraping mechanism further comprises a rotating shaft, a hook, a deformation ring and a sliding block, the rotating shaft is hinged to the upper end of the side, provided with a sliding groove, of a supporting plate, the hook swings on one side of the rotating shaft, and the deformation ring is embedded in the side, close to the supporting plate, of the hook; the sliding block is located at the end, away from the hook, of the deformation ring, the end, away from the rotating shaft, of the hook is arranged in an arc shape, the hook extends to one side of the scraping ring, the end, at the rotating shaft, of the hook swings in an inclined mode, the hook perpendicularly corresponds to the clamping ring, and a groove is formed in the outer side of the clamping ring and is in an arc shape. The outer side or the upper end of the clamping ring perpendicularly abuts against the upper end of the hook, at the moment, the threaded rod can drive the hook to move upwards through the clamping ring, then the scraping ring can slide upwards in the material barrel, residual concrete on the inner wall of the material barrel can be cleaned through the scraping ring, and the situation that the residual concrete on the inner wall of the material barrel cannot be rapidly cleaned is avoided.

Description

Technical Field

[0001] This invention relates to the field of chemical or physical analysis, specifically to a device and method for testing the permeability of permeable concrete. Background Technology

[0002] Permeable concrete is a material widely used in construction, roads, bridges, and other fields. The water-cement ratio is strictly controlled between 0.28 and 0.32. High-performance water-reducing agents with a water reduction rate of 25% are used as admixtures, along with special binding agents and reinforcing agents. Tap water is used. The air permeability of permeable concrete is an important indicator of its performance. Concrete air permeability refers to the resistance of the internal pore structure and porosity of concrete to gas flow. The air permeability of permeable concrete needs to be tested using specialized equipment. During testing, a permeable concrete sample is placed in the equipment, and the gas flow rate and pressure difference are measured by adjusting the air pressure difference. Finally, the air permeability value is calculated. This document provides technical insights into the testing equipment. The research on the testing equipment revealed the following problems: The testing equipment needs to fill the container with concrete and squeeze the concrete inside the container to test its permeability. After the test, the concrete inside the container needs to be cleaned to facilitate testing of different batches of concrete. After the test, the concrete needs to be manually removed from the container. However, concrete is easily left on the inner wall of the container, which makes it difficult for the testing equipment to clean the concrete residue on the inner wall of the container quickly. Currently, the existing technology CN201611161191.5 discloses a method and apparatus for testing the air permeability coefficient of concrete. This invention involves inserting a prefabricated concrete test specimen into a test chamber and connecting it. After connection, test gas is introduced into the test chamber through a pressure reducing valve. The pressure reducing valve can control the pressure of the gas introduced into the test chamber, which can conveniently test the air permeability coefficient under different pressures. The permeated gas is introduced into a U-shaped tube, and the reading can be read intuitively through the U-shaped tube. The test results are intuitive and reliable. If the test gas needs to be changed, only a different gas needs to be introduced. It has the advantages of simple structure, convenient operation, and accurate test results. This invention primarily addresses the problem that testing equipment cannot quickly clean residual concrete from the inner wall of a container. Summary of the Invention

[0003] The purpose of this invention is to provide a device and method for testing the permeability of permeable concrete.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A permeability testing device and method for permeable concrete includes a testing instrument. The testing instrument has a material bucket and a testing panel on its inner side. A pressure plate is rotatably nested at the upper end of the material bucket. A threaded rod is rotatably connected to the upper end of the pressure plate. A handle is fitted onto the upper end of the threaded rod. A retaining ring is provided at the lower end of the pressure plate.

[0005] As a further aspect of the present invention: a pressure sensor is provided at the lower end of the material barrel. The pressure sensor is connected to the detection panel circuit via a wire. The detection panel includes a display screen and a controller. The inside of the material barrel is concave. Slide grooves are provided on both sides of the inner wall of the material barrel. The slide grooves are arranged vertically. A scraping mechanism slides on the inner side of the slide grooves.

[0006] As a further embodiment of the present invention: the pressure plate slides and fits into the material barrel, the retaining ring is circular, and a groove is provided on the outer side of the retaining ring, the groove being arc-shaped.

[0007] As a further aspect of the present invention: the handle rotates 360° at the upper end of the threaded rod, and when the handle rotates, the threaded rod and the pressure plate rotate synchronously.

[0008] As a further embodiment of the present invention: the scraping mechanism includes a scraper ring, a protrusion and a support plate, the protrusion slides inside the groove of the material barrel, the scraper ring slides inside the protrusion, and the support plate is located at the lower end of the scraper ring.

[0009] As a further aspect of the present invention: the outer side of the scraper ring is in contact with the inner wall of the material barrel, and when the pressure plate slides downward inside the material barrel, the scraper ring is located at the lower end inside the material barrel, and the scraper ring is circular.

[0010] As a further aspect of the present invention: the support plates are arranged at an inclination of 45°. When the scraper ring is at the lower end of the material barrel, the lower end of the support plate is perpendicularly pressed against the lower end of the material barrel. A sliding groove is provided on one side of the support plate, and the sliding groove is set at an inclination of 45°.

[0011] As a further embodiment of the present invention: the cleaning mechanism further includes a rotating shaft, a hook, a deformable ring, and a slider. The rotating shaft is hinged to the upper end of the support plate on the side with the groove. The hook swings on one side of the rotating shaft. The deformable ring is embedded in the side of the hook near the support plate. The slider is located at the end of the deformable ring away from the hook.

[0012] As a further aspect of the present invention: the end of the hook away from the rotating shaft is arc-shaped, the hook extends to one side of the scraping ring, the hook swings at an angle at one end of the rotating shaft, and the hook and the retaining ring are perpendicularly corresponding.

[0013] As a further aspect of the present invention: the deformable ring is semi-circular in shape with a semi-circular angle of 90-180°, the slider slides inside the groove on one side of the support plate, the slider weighs 500-600g, and the slider slides at an inclination inside the groove of the support plate.

[0014] As a further aspect of the present invention: the upper end of the threaded rod is provided with an extension post, the two sides of the extension post are slidably nested with connecting rods, the upper end of the handle is slidably nested with a weight, and the interior of the weight is provided with a cone.

[0015] As a further aspect of the present invention: the extension column is perpendicular to the weight, and grooves are provided on both sides of the extension column, the grooves are arranged vertically, and one end of the connecting rod extends into the groove.

[0016] As a further aspect of the present invention: the end of the connecting rod away from the extension column is connected to the inner wall of the handle, the connecting rod is arranged horizontally, and when the handle rotates horizontally, the handle drives the extension column and the threaded rod to rotate synchronously through the connecting rod.

[0017] As a further aspect of the present invention: the lower end of the weight is provided with a groove, the cone is located inside the groove, the weight is 0.5-1kg, and the groove of the weight and the extension column are vertically slidably nested.

[0018] As a further aspect of the present invention, the detection method includes the following steps, the specific operation steps of which are as follows: S1: When using the testing equipment, manually fill the inside of the bucket with concrete and manually turn the handle. When the handle is turned, the threaded rod and the pressure plate rotate synchronously, and the pressure plate squeezes the concrete. S2: Manually lift the weight upwards, and then the weight falls downwards on the inside of the handle. The groove at the bottom of the weight slides and nests vertically with the extension column. At this time, the bottom of the cone can impact the top of the extension column, and the extension column can assist the threaded rod and pressure plate to slide downwards. At this time, the handle is in a stationary state. S3: The pressure sensor at the bottom of the material bucket records pressure changes. The pressure sensor transmits the data to the inside of the detection panel, and the processor inside the detection panel calculates the air content in the concrete. S4: After the test is completed, clean out the concrete inside the bucket, manually rotate the threaded rod downwards, and the threaded rod drives the retaining ring to slide downwards through the pressure plate. When the retaining ring slides down to the lower end of the bucket, the lower end of the retaining ring presses against the upper end of the hook. At this time, the hook tilts downwards at one end of the shaft. S5: The retaining ring slides to the lower end of the hook. When the hook tilts and swings downward, it squeezes the upper end of the deformation ring. The deformation ring deforms as a whole, and one end of the deformation ring can drive the slider to slide upward inside the groove of the support plate. The slider weighs 500-600g. Using the weight of the slider, after the slider slides upward inside the groove of the support plate, the slider can slide downward back to its original position inside the groove of the support plate. S6: The slider returns to its original position, which drives the deformation ring to return to its original position. The deformation ring can assist the hook to swing upward, so the hook can quickly return to its original position after the retaining ring is squeezed. Since the retaining ring is circular and has a groove on its outer side, the groove is arc-shaped. Therefore, after the threaded rod moves upward, the outer side or upper end of the retaining ring is perpendicularly pressed against the upper end of the hook. S7: At this time, the threaded rod can drive the hook to move upward through the retaining ring, and then the scraper ring can slide upward inside the material bucket, and the scraper ring can drive the concrete on the inner wall of the material bucket to move upward. Beneficial effects

[0019] 1. After the inspection is completed, clean out the concrete inside the bucket. Manually rotate the threaded rod downwards. The threaded rod drives the retaining ring to slide downwards through the pressure plate. When the retaining ring slides down to the lower end of the bucket, the lower end of the retaining ring presses against the upper end of the hook. At this time, the hook tilts downwards at one end of the shaft. The retaining ring slides to the lower end of the hook. When the hook tilts downwards, it presses against the upper end of the deformation ring. The deformation ring deforms as a whole. One end of the deformation ring can drive the slider to slide upwards inside the groove of the support plate. The slider weighs 500-600g. Using the weight of the slider, after the slider slides upwards inside the groove of the support plate, the slider can slide downwards back to its original position inside the groove of the support plate. The return of the slider drives the deformation ring to its original position. The deformation ring can assist the hook to swing upwards. Therefore, the hook can quickly return to its original position after being pressed by the retaining ring. 2. Because the retaining ring is circular and has a groove on its outer side, the groove is arc-shaped. Therefore, after the threaded rod moves upward, the outer side or upper end of the retaining ring is perpendicularly pressed against the upper end of the hook. At this time, the threaded rod can drive the hook to move upward through the retaining ring, and the scraper ring can slide upward inside the material bucket. The scraper ring can be used to clean the residual concrete on the inner wall of the material bucket, avoiding the situation where the residual concrete on the inner wall of the material bucket cannot be cleaned quickly. 3. When the handle is rotated horizontally, the handle drives the extension column and threaded rod to rotate synchronously through the connecting rod. Concrete enters the inside of the bucket. Manually lift the weight upwards, and then the weight falls downwards on the inside of the handle. The groove at the lower end of the weight slides and nests vertically with the extension column. At this time, the lower end of the cone can impact the upper end of the extension column. The extension column can assist the threaded rod and pressure plate to slide downwards. At this time, the handle is in a stationary state. Using the downward impact of the weight, the pressure plate can further impact the concrete and assist in further compacting the concrete. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the material bucket structure of the present invention.

[0022] Figure 3 This is a partial structural diagram of the material bucket of the present invention.

[0023] Figure 4 This is a schematic diagram of the threaded rod structure of the present invention.

[0024] Figure 5 This is a schematic diagram of the scraper ring structure of the present invention.

[0025] Figure 6 This is a schematic diagram of the support plate structure of the present invention.

[0026] Figure 7 For the present invention Figure 6 Diagram showing the swing of the middle hook.

[0027] Figure 8 This is a schematic diagram of the cross-section of the handle of the present invention.

[0028] Figure 9 This is a schematic diagram of the weights used in this invention viewed from below.

[0029] Figure 1-9 In the middle: 1-Detector, 101-Material bucket, 102-Threaded rod, 103-Handle, 104-Detection panel, 105-Pressure plate, 106-Snap ring, 2-Scraper ring, 201-Protrusion, 202-Support plate, 3-Rotating shaft, 301-Hook, 302-Deformation ring, 303-Slider, 4-Weight, 401-Cone, 5-Extension column, 501-Connecting rod. Implementation

[0030] Please see Figure 1-9 In this embodiment of the invention, Example 1: A permeability testing device and method for permeable concrete, including a testing instrument 1. The inner side of the testing instrument 1 is provided with a material bucket 101 and a testing panel 104. The upper end of the material bucket 101 is rotatably nested with a pressure plate 105. The upper end of the pressure plate 105 is rotatably connected to a threaded rod 102. The upper end of the threaded rod 102 is fitted with a handle 103. The lower end of the pressure plate 105 is provided with a retaining ring 106. Among them: material barrel 101 and detection panel 104. The lower end of material barrel 101 is equipped with a pressure sensor. The pressure sensor is connected to the detection panel 104 via wire. The detection panel 104 includes a display screen and a controller. The inside of material barrel 101 is concave. Slide grooves are opened on both sides of the inner wall of material barrel 101. The slide grooves are arranged vertically. A scraping mechanism slides on the inner side of the slide groove. The detection panel 104 includes a display screen, a controller, and a processor, all of which are connected to the power circuit via power cords. The inner wall of the material barrel 101 is provided with sliding grooves on both sides, the sliding grooves are arranged vertically, and a scraping mechanism slides on the inner side of the sliding grooves. The scraping mechanism slides vertically on the inner wall of the material barrel 101 through the sliding grooves. The pressure plate 105 slides and fits against the material barrel 101. The retaining ring 106 is circular, and a groove is provided on the outer side of the retaining ring 106. The groove is arc-shaped. The retaining ring 106 is circular, and a groove is formed on the outer side of the retaining ring 106. The groove is arc-shaped. Please refer to the instruction manual for details. Figure 4 As shown; The threaded rod 102 and the handle 103 are arranged in a 360° rotation at the upper end of the threaded rod 102. When the handle 103 rotates, the threaded rod 102 and the pressure plate 105 rotate synchronously. When using the testing equipment, concrete is manually filled into the inside of the bucket 101, and the handle 103 is manually turned. When the handle 103 is turned, the threaded rod 102 and the pressure plate 105 rotate synchronously. The pressure plate 105 compresses the concrete, while the pressure sensor at the lower end of the bucket 101 records the pressure changes. The pressure sensor transmits the data to the inside of the testing panel 104. The processor inside the testing panel 104 calculates the air content in the concrete, thereby detecting the permeability of the concrete. Example 2: Refer to the attached instruction manual Figure 2-5 It can be seen that the difference between Embodiment 2 and Embodiment 1 is that the cleaning mechanism includes a scraper ring 2, a protrusion 201 and a support plate 202. The protrusion 201 slides inside the groove of the material barrel 101, the scraper ring 2 slides inside the protrusion 201, and the support plate 202 is located at the lower end of the scraper ring 2. Among them: scraper ring 2 and protrusion 201, the outer side of scraper ring 2 is in contact with the inner wall of material barrel 101, when pressure plate 105 slides down inside material barrel 101, scraper ring 2 is located at the lower end inside material barrel 101, and scraper ring 2 is in the shape of a ring. The support plate 202 is arranged at an inclination of 45°. When the scraper ring 2 is located at the lower end of the material barrel 101, the lower end of the support plate 202 is perpendicularly pressed against the lower end of the material barrel 101. A sliding groove is provided on one side of the support plate 202, and the sliding groove is set at an inclination of 45°. The support plates 202 are arranged at an angle of 45° and are distributed around the lower end of the scraper ring 2 to facilitate the support plates 202 to support the scraper ring 2. When concrete falls into the inside of the bucket 101, the pressure plate 105 compresses the concrete. At this time, the scraper ring 2 is located at the lower end of the inside of the bucket 101, and the lower end of the support plate 202 is perpendicularly pressed against the lower end of the inside of the bucket 101, so that the scraper ring 2 is suspended in the air. Example 3: Refer to the appendix of the instruction manual Figure 2-7It can be seen that the difference between Embodiment 3 and Embodiments 1 and 2 is that the cleaning mechanism further includes a rotating shaft 3, a hook 301, a deformable ring 302 and a slider 303. The rotating shaft 3 is hinged to the upper end of the support plate 202 on the side with the groove. The hook 301 swings on one side of the rotating shaft 3. The deformable ring 302 is embedded in the side of the hook 301 near the support plate 202. The slider 303 is located at the end of the deformable ring 302 away from the hook 301. Among them: the rotating shaft 3 and the hook 301, the end of the hook 301 away from the rotating shaft 3 is arc-shaped, the hook 301 extends to one side of the scraper ring 2, the hook 301 is tilted and swings at one end of the rotating shaft 3, and the hook 301 is perpendicular to the retaining ring 106. The hook 301 and the retaining ring 106 are perpendicularly aligned. When the retaining ring 106 slides downward to the lower end of the material barrel 101, the lower end of the retaining ring 106 presses against the upper end of the hook 301. At this time, the hook 301 tilts downward at one end of the rotating shaft 3. (Refer to the instruction manual for details.) Figure 7 As shown; The deformable ring 302 and the slider 303 are semi-circular arcs with an arc angle of 90-180°. The slider 303 slides inside a groove on one side of the support plate 202. The slider 303 weighs 500-600g and slides at an angle inside the groove of the support plate 202. The deformable ring 302 is made of a deformable material, such as rubber. The slider 303 slides inside the groove on one side of the support plate 202. The groove is 3-6cm long, so the deformation angle of the deformation ring 302 can be limited, which in turn can limit the swing angle of the hook 301 on the side of the rotating shaft 3, thus preventing the hook 301 from swinging upward at an angle greater than 45° on the side of the rotating shaft 3. The slider 303 weighs 500-600g. Utilizing the weight of the slider 303, after the slider 303 slides upward inside the groove of the support plate 202, the slider 303 can slide downward back to its original position inside the groove of the support plate 202. The process involves the following steps: After inspection, the concrete inside the material bucket 101 is removed. The threaded rod 102 is manually rotated downwards, causing the retaining ring 106 to slide downwards via the pressure plate 105. When the retaining ring 106 slides down to the lower end of the material bucket 101, its lower end presses against the upper end of the hook 301. At this time, the hook 301 tilts downwards at one end of the rotating shaft 3. The retaining ring 106 slides to the lower end of the hook 301, and as the hook 301 tilts downwards, it presses against the upper end of the deformable ring 302. The deformable ring 302 as a whole... The deformation ring 302 can drive the slider 303 to slide upward inside the groove of the support plate 202. The slider 303 weighs 500-600g. Using the weight of the slider 303, after the slider 303 slides upward inside the groove of the support plate 202, the slider 303 can slide downward back to its original position inside the groove of the support plate 202. The return of the slider 303 drives the deformation ring 302 to return to its original position. The deformation ring 302 can assist the hook 301 to swing upward. Therefore, the hook 301 can quickly return to its original position after being squeezed by the retaining ring 106. Since the retaining ring 106 is circular and has a groove on its outer side, the groove is arc-shaped. Therefore, after the threaded rod 102 moves upward, the outer side or upper end of the retaining ring 106 is perpendicularly pressed against the upper end of the hook 301. At this time, the threaded rod 102 can drive the hook 301 to move upward through the retaining ring 106, and the scraper ring 2 can slide upward inside the material bucket 101. The scraper ring 2 can be used to clean the residual concrete on the inner wall of the material bucket 101, avoiding the situation where the residual concrete on the inner wall of the material bucket 101 cannot be cleaned quickly. Example 4: Refer to the appendix of the instruction manual Figure 2 , 8 As can be seen from 9, the difference between embodiment 4 and embodiments 1-3 is that the upper end of the threaded rod 102 is provided with an extension post 5, the two sides of the extension post 5 are slidably nested with connecting rods 501, the upper end of the handle 103 is slidably nested with a weight 4, and the inside of the weight 4 is provided with a cone 401. Among them: extension column 5, extension column 5 is perpendicular to weight 4, and grooves are provided on both sides of extension column 5. The grooves are arranged vertically, and one end of connecting rod 501 extends into the groove. The extension column 5 has grooves on both sides, which are arranged vertically. One end of the connecting rod 501 extends into the groove. By utilizing the shape of the groove, when the extension column 5 slides vertically, the connecting rod 501 remains stationary. The grooves on both sides of the extension column 5 slide vertically with the connecting rod 501, which can prevent the handle 103 from sliding vertically. The connecting rod 501 has one end away from the extension column 5 connected to the inner wall of the handle 103. The connecting rod 501 is arranged horizontally. When the handle 103 rotates horizontally, the handle 103 drives the extension column 5 and the threaded rod 102 to rotate synchronously through the connecting rod 501. The weight 4 and the cone 401 are provided. The lower end of the weight 4 is provided with a groove, and the cone 401 is located inside the groove. The weight 4 weighs 0.5-1kg. The groove of the weight 4 and the extension column 5 are vertically and slidingly nested. When the handle 103 rotates horizontally, the handle 103 drives the extension column 5 and the threaded rod 102 to rotate synchronously through the connecting rod 501. Concrete enters the interior of the bucket 101. The weight 4 is manually lifted upwards, and then the weight 4 falls downwards inside the handle 103. The groove at the lower end of the weight 4 slides vertically and nests with the extension column 5. At this time, the lower end of the cone 401 can impact the upper end of the extension column 5. The extension column 5 can assist the threaded rod 102 and the pressure plate 105 to slide downwards. At this time, the handle 103 is in a stationary state. With the downward impact of the weight 4, the pressure plate 105 can further impact the concrete and assist in further compacting the concrete. Example

[0031] The detection method includes the following steps, and the specific operation steps are as follows: S1: When using the testing equipment, manually fill the concrete into the inside of the bucket 101 and manually turn the handle 103. When the handle 103 is turned, the threaded rod 102 and the pressure plate 105 rotate synchronously, and the pressure plate 105 squeezes the concrete. S2: Manually lift the weight 4 upwards, and then the weight 4 falls downwards inside the handle 103. The groove at the lower end of the weight 4 slides and nests vertically with the extension column 5. At this time, the lower end of the cone 401 can impact the upper end of the extension column 5. The extension column 5 can assist the threaded rod 102 and the pressure plate 105 to slide downwards. At this time, the handle 103 is in a stationary state. S3: The pressure sensor at the lower end of the material bucket 101 records the pressure change. The pressure sensor transmits the data to the inside of the detection panel 104. The processor inside the detection panel 104 calculates the air content in the concrete. S4: After the test is completed, clean out the concrete inside the material bucket 101, manually rotate the threaded rod 102 downwards, and the threaded rod 102 drives the retaining ring 106 to slide downwards through the pressure plate 105. When the retaining ring 106 slides down to the lower end inside the material bucket 101, the lower end of the retaining ring 106 presses against the upper end of the hook 301. At this time, the hook 301 tilts downwards at one end of the rotating shaft 3. S5: The retaining ring 106 slides to the lower end of the hook 301. When the hook 301 tilts and swings downward, it squeezes the upper end of the deformation ring 302. The deformation ring 302 deforms as a whole. One end of the deformation ring 302 can drive the slider 303 to slide upward inside the groove of the support plate 202. The slider 303 weighs 500-600g. Using the weight of the slider 303, after the slider 303 slides upward inside the groove of the support plate 202, the slider 303 can slide downward back to its original position inside the groove of the support plate 202. S6: The return of slider 303 drives the deformation ring 302 to return to its original position. The deformation ring 302 can assist the hook 301 to swing upward. Therefore, the hook 301 can quickly return to its original position after being squeezed by the retaining ring 106. Since the retaining ring 106 is circular and has a groove on its outer side, the groove is arc-shaped. Therefore, after the threaded rod 102 moves upward, the outer side or upper end of the retaining ring 106 is perpendicularly pressed against the upper end of the hook 301. S7: At this time, the threaded rod 102 can drive the hook 301 to move upward through the retaining ring 106, and then the scraper ring 2 can slide upward inside the material bucket 101, and the scraper ring 2 can drive the concrete on the inner wall of the material bucket 101 to move upward.

[0032] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these should also be considered within the scope of protection of the present invention. These will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A device for testing the permeability of permeable concrete, comprising a testing instrument (1), characterized in that: The inner side of the detector (1) is provided with a material bucket (101) and a detection panel (104). The upper end of the material bucket (101) is rotatably nested with a pressure plate (105). The upper end of the pressure plate (105) is rotatably connected with a threaded rod (102). The upper end of the threaded rod (102) is fitted with a handle (103). The lower end of the pressure plate (105) is provided with a retaining ring (106). The material barrel (101) and the detection panel (104) are provided. The lower end of the material barrel (101) is equipped with a pressure sensor. The pressure sensor is connected to the detection panel (104) via a wire. The detection panel (104) includes a display screen and a controller. The inside of the material barrel (101) is concave. The inner walls of the material barrel (101) are provided with grooves on both sides. The grooves are arranged vertically. A scraping mechanism slides on the inner side of the grooves. The pressure plate (105) slides and fits against the material barrel (101). The retaining ring (106) is circular, and a groove is provided on the outer side of the retaining ring (106). The groove is arc-shaped. The retaining ring (106) is circular, and a groove is provided on the outer side of the retaining ring (106). The groove is arc-shaped, as shown in Figure 4 of the instruction manual. The threaded rod (102) and the handle (103) rotate 360° at the upper end of the threaded rod (102). When the handle (103) rotates, the threaded rod (102) and the pressure plate (105) rotate synchronously.

2. The permeability testing equipment for permeable concrete according to claim 1, characterized in that: The cleaning mechanism includes a scraper ring (2), a protrusion (201) and a support plate (202). The protrusion (201) slides inside the groove of the material bucket (101), the scraper ring (2) slides inside the protrusion (201), and the support plate (202) is located at the lower end of the scraper ring (2).

3. The permeability testing equipment for permeable concrete according to claim 2, characterized in that: The outer side of the scraper ring (2) is in contact with the inner wall of the material barrel (101). When the pressure plate (105) slides downward inside the material barrel (101), the scraper ring (2) is located at the lower end inside the material barrel (101), and the scraper ring (2) is circular.

4. The permeability testing equipment for permeable concrete according to claim 2, characterized in that: The support plate (202) is arranged at an inclination of 45°. When the scraper ring (2) is located at the lower end of the material barrel (101), the lower end of the support plate (202) is perpendicularly pressed against the lower end of the material barrel (101). A sliding groove is provided on one side of the support plate (202), and the sliding groove is set at an inclination of 45°.

5. The permeability testing equipment for permeable concrete according to claim 1, characterized in that: The cleaning mechanism also includes a rotating shaft (3), a hook (301), a deformable ring (302), and a slider (303). The rotating shaft (3) is hinged to the upper end of the support plate (202) on the side with the groove. The hook (301) swings on one side of the rotating shaft (3). The deformable ring (302) is embedded in the side of the hook (301) near the support plate (202). The slider (303) is located at the end of the deformable ring (302) away from the hook (301).

6. The permeability testing equipment for permeable concrete according to claim 5, characterized in that: The hook (301) is arc-shaped at the end away from the rotating shaft (3), and extends to one side of the scraper ring (2). The hook (301) swings at one end of the rotating shaft (3), and the hook (301) is perpendicular to the retaining ring (106).

7. The permeability testing equipment for permeable concrete according to claim 5, characterized in that: The deformable ring (302) is semi-circular, with a semi-circular angle of 90-180°. The slider (303) slides inside the groove on one side of the support plate (202). The slider (303) weighs 500-600g and slides at an angle inside the groove of the support plate (202).

8. The permeability testing equipment for permeable concrete according to claim 1, characterized in that: The upper end of the threaded rod (102) is provided with an extension post (5), and the two sides of the extension post (5) are slidably nested with connecting rods (501). The upper end of the handle (103) is slidably nested with a weight (4), and the inside of the weight (4) is provided with a cone (401).

9. The permeability testing equipment for permeable concrete according to claim 8, characterized in that: The extension column (5) is perpendicular to the weight (4). Grooves are provided on both sides of the extension column (5), and the grooves are arranged vertically. One end of the connecting rod (501) extends into the groove. The connecting rod (501) is connected to the inner wall of the handle (103) at the end away from the extension column (5). The connecting rod (501) is arranged horizontally. When the handle (103) rotates horizontally, the handle (103) drives the extension column (5) and the threaded rod (102) to rotate synchronously through the connecting rod (501). The weight (4) and the cone (401) are provided with a groove at the lower end of the weight (4) and the cone (401) is located inside the groove. The weight (4) weighs 0.5-1kg and the groove of the weight (4) is vertically slidably nested with the extension column (5).

10. A testing method for permeability testing equipment of permeable concrete, characterized in that... The permeability testing equipment for permeable concrete according to claims 1-9 includes the following steps in its testing method: S1: When using the testing equipment, manually fill the concrete into the inside of the bucket (101) and manually turn the handle (103). When the handle (103) is turned, the threaded rod (102) and the pressure plate (105) rotate synchronously, and the pressure plate (105) squeezes the concrete. S2: Manually lift the weight (4) upwards, and then the weight (4) falls downwards inside the handle (103). The groove at the lower end of the weight (4) is vertically slid-nested with the extension column (5). At this time, the lower end of the cone (401) can impact the upper end of the extension column (5). The extension column (5) can assist the threaded rod (102) and the pressure plate (105) to slide downwards. At this time, the handle (103) is in a stationary state. S3: The pressure sensor at the bottom of the material bucket (101) records the pressure change. The pressure sensor transmits the data to the inside of the detection panel (104). The air content in the concrete is calculated by the processor inside the detection panel (104). S4: After the test is completed, clean out the concrete inside the bucket (101), manually rotate the threaded rod (102) downwards, and the threaded rod (102) drives the retaining ring (106) to slide downwards through the pressure plate (105). When the retaining ring (106) slides down to the lower end inside the bucket (101), the lower end of the retaining ring (106) is pressed against the upper end of the hook (301). At this time, the hook (301) tilts downwards at one end of the rotating shaft (3). S5: The retaining ring (106) slides to the lower end of the hook (301). When the hook (301) tilts downward, it presses against the upper end of the deformation ring (302). The deformation ring (302) deforms as a whole. One end of the deformation ring (302) can drive the slider (303) to slide upward inside the groove of the support plate (202). The slider (303) weighs 500-600g. Using the weight of the slider (303), after the slider (303) slides upward inside the groove of the support plate (202), the slider (303) can slide downward back to its original position inside the groove of the support plate (202). S6: The slider (303) returns to its original position, which drives the deformation ring (302) to return to its original position. The deformation ring (302) can assist the hook (301) to swing upward. Therefore, the hook (301) can quickly return to its original position after being squeezed by the retaining ring (106). Since the retaining ring (106) is circular, and the outer side of the retaining ring (106) has a groove, which is arc-shaped, after the threaded rod (102) moves upward, the outer side or upper end of the retaining ring (106) is perpendicularly pressed against the upper end of the hook (301). S7: At this time, the threaded rod (102) can drive the hook (301) to move upward through the snap ring (106), and then the scraper ring (2) can slide upward inside the bucket (101), and the scraper ring (2) can drive the concrete on the inner wall of the bucket (101) to move upward.

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