A wind-sand environment simulation experiment table and application thereof

Abstract

The application discloses a wind-sand environment simulation experiment table and application thereof, and relates to the technical field of wind-sand environment simulation experiments, and comprises a box body, the box body is provided with a transparent cover, the transparent cover covers half of the shell of the box body, sand filter screens are screw-connected to the front end and the rear end of the box body, and circular sand filter screens are fixedly connected to the middle portions of the sand filter screens. The wind-sand environment simulation experiment table and application thereof automatically guide the sand in the sand tank to the small magnetic valve pipe and the large magnetic valve pipe, ensure that the wind-sand assembly can continuously output the sand from the magnetic valve pipe structure under the condition of sand, and avoid the interruption phenomenon, so that the sand can be finally completely drained from the sand tank, sand particle residues are avoided, the problem of manually cleaning the sand particles in the sand tank is avoided, and the accurate statistics and collection of the total amount of sand changes in the wind-sand environment simulation experiment are facilitated.

Description

Technical Field

[0001] This invention relates to the field of wind and sand environment simulation experiment technology, specifically to a wind and sand environment simulation experimental platform and its application. Background Technology

[0002] In recent years, due to the increasing climate change, the duration of dust storms in the atmosphere has been lengthening, especially in economically developed eastern regions. There is a particular need for edge technologies focused on environmental simulation to specifically study various natural climates, such as sandstorm environments, in order to expand the development and extension of artificial reproduction technology and product testing technologies in simulated environments. Examples include simulations of hot and humid environments, acidic and alkaline environments, rain and snow environments, and sandstorm environments. Among these, sandstorm simulation test chambers are a common sandstorm environment simulation technology, corresponding to sandstorm environment simulation platforms. However, existing sandstorm environment simulation platforms often result in sand clogging or remaining in the structure, preventing the full sand from being used in the simulation. This leads to discrepancies in the total amount of sand counted in the simulation experiments, severely interfering with the statistical analysis and verification of experimental results. Summary of the Invention

[0003] To solve the above technical problems, the present invention is achieved through the following technical solution: a sandstorm environment simulation test bench and its application, including a box body, the box body having a transparent cover, the transparent cover covering half of the shell of the box body, and a sand filter screen plate threadedly installed at both the front and rear ends of the box body, and a circular sand filter screen fixedly installed in the middle of the sand filter screen plate.

[0004] The simulation test assembly is used to simulate the formation of sandstorms and control the amount of sandstorms.

[0005] The simulation test assembly also includes:

[0006] A sand-blowing component is used to control the release amount and release area of ​​sand. The sand-blowing component is installed inside the rear end of the housing. The sand-blowing component includes a fan mounted on the rear end of the housing. The fan is attached to the front side of the sand filter screen at the rear end of the housing. A sand-throwing component is installed at the front end of the fan. The sand-throwing component is used for autonomous sand throwing and can also adjust the initial sand-throwing position.

[0007] A sand collection assembly is used to collect and aggregate sand. The sand collection assembly is installed on the front side of the inner side of the box body and is installed in close contact with the sand filter screen plate on the front side of the inner side of the box body. The sand collection assembly includes a return sand box fixedly installed on the front side of the inner side of the box body, and the bottom end of the return sand box is fixedly installed on the inner bottom plate of the box body. The return sand box is used to collect the sand that has gathered at the front side of the inner side of the box body.

[0008] Preferably, an arc guide plate is fixedly installed on the inner bottom of the box, and the arc guide plate is set close to the sand return box. The arc guide plate is curved towards the direction of the sand return box. The arc guide plate is used to guide the sand in a curved shape forward inside the box. An experimental platform is installed at the inner bottom of the box and is installed between the arc guide plate and the sand throwing device. The experimental platform can be adjusted in height on the bottom plate inside the box. The arc guide plate prevents the sand from flowing back to the experimental platform and prevents the sand from interfering with the experiment.

[0009] Preferably, the rear end of the sand-throwing component is threaded with an expanded neck bucket, and the rear end of the expanded neck bucket is threaded with a ball head component. The ball head component has a longitudinal rod and a transverse rod inserted longitudinally and transversely, respectively. The longitudinal rod and the transverse rod are vertically arranged in a staggered manner through the ball head component. The ends of the longitudinal rod and the transverse rod are threaded with threaded rods. The end of the threaded rod away from the longitudinal rod is threaded with a first pulley. The first pulley is slidably installed on the inner side of the box. The sand-throwing component moves left and right inside the box through the cooperation of the longitudinal rod, the threaded rod and the first pulley.

[0010] Among them, a set of second trolleys can be threadedly connected to the threaded rod at the end of the crossbar, and the second trolleys can be slidably installed inside the box in the upper and lower positions, so that the sand-throwing component can also slide up and down inside the box by means of the crossbar, the threaded rod and the second trolley, thereby improving the flexibility of the spatial position control of the sand-throwing component inside the box.

[0011] Preferably, the end of the ball head component away from the expanding neck bucket is threaded with a straight pipe, a sand jar is assembled inside the sand throwing component, and the sand throwing component is sealed between the expanding neck bucket and the sand jar. The sand jar is used to hold sand. A pushing part is recessed inward in the middle of the side of the sand jar facing the expanding neck bucket, and the bottom of the inner side of the sand jar is raised inward. A sand guide bucket is inserted into the outer surface of the end of the sand throwing component away from the expanding neck bucket. The sand guide bucket is used to guide sand into the sand jar.

[0012] Three sets of small magnetic valve tubes and three sets of large magnetic valve tubes are connected between the sand tank and the inner wall of the sand throwing component, near the bottom. The small and large magnetic valve tubes are arranged one in front of the other on the inner side of the sand throwing component. The interfaces connecting the small and large magnetic valve tubes to the inner side of the sand tank are distributed in a front-to-back manner on the inward bulge at the bottom of the sand tank, which facilitates the diversion of sand into two streams and guiding them into the magnetic valve tube structure. Both the small and large magnetic valve tubes are telescopically connected to the sand tank. The bottom ends of the small and large magnetic valve tubes penetrate the sand throwing component and have three sets of small holes and three sets of large holes, with the small holes located in front of the large holes.

[0013] Preferably, the sand-throwing component has an opening on the side near the sand guide hopper. The inner wall of the opening has a double-section ball cavity arranged in a circular array. Magnetic beads are installed in the double-section ball cavity and slide within it. The sand guide hopper is secured in the opening by the magnetic beads. Magnetic ball grooves are arranged in a circular array at the insertion point of the sand guide hopper and the opening. The magnetic beads are magnetically attracted and engaged with the magnetic ball grooves. A flexible neck tube is telescopically connected between the opening and the sand container. A bulge is fixedly installed on the outer surface of the sand-throwing component near the opening.

[0014] Preferably, the neck-expanding bucket has an overall flared bottleneck design. Airbag prisms are embedded and installed in a circular array on the outer surface of the neck-expanding bucket. Curved baffles are fixedly connected to both ends of the airbag prisms. The curved baffles are made of elastic material. A bottom air cavity is opened in the middle of the bottom end of the airbag prisms. Elastic ribs are fixedly connected to the inner side of the airbag prisms. The elastic ribs are fixedly connected to the neck-expanding bucket through the bottom air cavity. An extension part is provided in the middle of the side of the airbag prisms, so that the airbag prisms can bulge out from the surface of the neck-expanding bucket. The bottom ends of the airbag prisms and the curved baffles are both fixedly connected to the neck-expanding bucket.

[0015] Preferably, an inclined guide frame is installed on the inner side of the end of the expanded neck bucket facing the sand throwing component. A straight guide rod is threadedly installed in the middle of the inclined guide frame. A spring is fixedly connected between the inclined guide frame and the pushing part. The spring is fitted onto the straight guide rod and is used to guide the pushing path of the straight guide rod. A rubber diaphragm is installed in the middle of the end of the expanded neck bucket facing the sand throwing component. A pushing plate is installed in the middle of the rubber diaphragm. Four sets of guide springs are installed in a circular array between the pushing plate and the rubber diaphragm. The pushing plate is located in the center of the four sets of guide springs. The guide springs are not connected to the pushing plate. The end of the straight guide rod near the rubber diaphragm is rotatably connected to the middle of the pushing plate. The inclined guide frame guides the straight guide rod upward at an angle to compress the spring and pushes the rear end of the sand tank upward through the pushing part, so that the sand inside the sand tank is discharged more quickly from the small magnetic valve tube and the large magnetic valve tube.

[0016] Preferably, the straight tube is connected to a wind hopper at one end away from the ball head component, and a sponge plug is fixedly installed on the side of the wind hopper at the other end away from the straight tube. The sponge plug is used to enhance the sand-blocking performance of the closed part when the tail end of the wind hopper contracts and closes, and to improve the airtight performance of the wind hopper during the contraction and closure period. Flexible folding parts are installed in a circular array on the outer surface of the wind hopper to increase the flexibility of the wind hopper and facilitate the contraction and closure of the tail end of the wind hopper. A memory metal wire is connected in a circular shape on the inner side of the wind hopper. When heated, the memory metal wire curls and deforms towards the middle. An electric heating ball is fixedly installed in the middle of the memory metal wire.

[0017] The air bucket is connected to the airbag prism through a straight pipe, a ball head component, and a bottom air cavity. The air bucket is also connected to the expanded neck bucket through a straight pipe and a ball head component.

[0018] Preferably, the sand return box has sand return ports on the upper edge of the side of the sand filter screen and the lower edge of the bottom plate of the inner side of the box. A sand pump is fixedly installed at the top center of the sand return box. The output end of the sand pump is threadedly connected to a gooseneck tube. The top of the gooseneck tube is threadedly connected to a guide tube frame. The guide tube frame is threaded with snap-fit ​​connectors in a rectangular array. The snap-fit ​​connectors snap into the sand guide hopper, and the output end of the snap-fit ​​connectors is protruding.

[0019] The guide frame is threadedly connected to a third trolley on both its left and right sides. The guide frame slides in the front and back positions inside the box via the third trolley. A scraper is fitted to the bottom of the box and is fitted to the front side of the arc guide plate. A second trolley is fitted to both its left and right sides. The scraper slides in the front and back positions inside the box via the second trolley.

[0020] The application of a wind and sand environment simulation test bench includes the following steps:

[0021] Step 1: First, fix the artificial scene to be simulated on the experimental table, then turn on the fan to drive the airflow inside the box from back to front. The wind force is controlled by controlling the output power of the fan.

[0022] Step 2: Then, by activating the small magnetic valve tube, the sand flows out obliquely downward from the bottom of the sand-throwing device under the action of gravity. Through the airflow around the sand-throwing device, a sandstorm environment is formed inside the box, and the sandstorm is used to attack the artificial scene on the experimental table.

[0023] During this period, by activating the first pulley to locally change the longitudinal sand throwing and flying range of the sand throwing component, the simulation of environmental changes with different sand content can be achieved. Furthermore, by changing the blowing intensity of the fan, the intensity of sand erosion can be changed, thus completing the artificial simulation process of adjusting the intensity of sand erosion. In this way, through the above operations, the simulation experiment of the sand erosion environment is completed.

[0024] This invention provides a sandstorm environment simulation test bench and its application, which has the following beneficial effects:

[0025] I. The sandstorm environment simulation test bench and its application: The sand filter plates installed at the front and rear ends of the chamber ensure that the chamber maintains a balance between the chamber and the external air pressure. At the same time, it facilitates the unidirectional blowing of the simulated wind pressure inside the chamber, unaffected by external factors, and will not affect the artificial simulation of sandstorm formation inside the chamber. Secondly, the sand filter plates can block sand particles inside the chamber, preventing a large amount of sand from being lost and avoiding sand pollution of the experimental environment outside the chamber. Furthermore, it can intercept sand inside the chamber, facilitating the subsequent recycling and reuse of sand by the sand collection component, avoiding the cumbersome process of refilling with new sand for each experiment, and saving manpower and resources.

[0026] II. The wind and sand environment simulation test bench and its application: The airflow is guided into the straight pipe through the wind bucket. The airflow is further guided by the ball head and the expanding neck bucket. Finally, the airflow is introduced into the airbag prism through the bottom wind cavity, so that the airbag prism is lifted by the airflow. During this period, the elastic rib is pulled and stretched away from the expanding neck bucket. The extension part is stretched from the initial folded state to the extended state. The entire airbag prism bulges from the surface of the expanding neck bucket, so that the airflow passing through the side of the expanding neck bucket is evenly distributed in a circular array. This makes each stream of airflow passing through the side of the expanding neck bucket concentrated and guided, thereby enhancing the strength of the airflow adhering to the surface of the sand-throwing component and guiding it forward.

[0027] III. The wind and sand environment simulation test bench and its application: The overall design of the flared neck bucket is a bottleneck shape, which increases the wind resistance when the airflow passes through the side of the flared neck bucket. This is used to briefly pressurize the airflow locally in the flared neck bucket, and with the help of the airbag prism, further accelerate the airflow velocity. This allows the sand released from inside the sand-throwing component to be smoothly carried away by the airflow and not fall directly onto the bottom plate inside the box. This achieves effective sand entrainment by the sand-throwing component with the help of the fan, thereby simulating the wind and sand environment.

[0028] IV. The sandstorm environment simulation test bench and its application utilize a guide spring to concentrate the deformation force point to the middle of the push plate. The push plate then pushes the straight guide rod to rotate clockwise in the middle of the inclined guide frame. Under the inclined guidance of the inclined guide frame, the straight guide rod compresses the spring while simultaneously pushing the sand tank upwards at the corresponding position of the push part. This causes the tail end of the sand tank to slowly tilt upwards, automatically guiding the sand inside the sand tank into the small and large magnetic valve tubes. This ensures that regardless of which magnetic valve tube structure is opened, the sandstorm component can maintain a continuous output of sand from the magnetic valve tube structure without interruption.

[0029] V. The sandstorm environment simulation test bench and its application: By using the threaded torsion and pushing action of the straight guide rod on the sand tank, the sand can be completely drained from the inside of the sand tank without leaving any sand particles. This avoids the problem of manually cleaning the sand tank of residual sand particles. It also facilitates the statistics of the total amount of sand refilled, and makes it convenient to accurately count and summarize the total amount of sand change in the sandstorm environment simulation experiment.

[0030] VI. This sandstorm environment simulation test bench and its application, through the setting of small and large magnetic valve tubes, can precisely control the front and back positions of sand falling from the bottom of the sand-throwing component, thereby controlling the distance at which the sand is carried by the airflow onto the test bench; by controlling whether the small or large magnetic valve tube is activated, it can also automatically control the total amount of sand discharged from the bottom of the sand-throwing component per unit time, thereby automatically controlling the total sand content of the sandstorm; combined with the control of the output power of the blower, it can control the level of simulated sandstorm. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the external structure of a sandstorm environment simulation test bench and its application according to the present invention.

[0032] Figure 2 This is a schematic diagram of the internal structure of the housing of the present invention;

[0033] Figure 3 This is a partial structural schematic diagram of the wind and sand component and experimental platform of the present invention;

[0034] Figure 4 This is a schematic diagram of the assembly structure of the ball joint and the longitudinal rod of the present invention;

[0035] Figure 5 This is a schematic diagram of the assembly structure of the sand-throwing component and the ball-head component of the present invention;

[0036] Figure 6 This is a schematic diagram of the assembly structure of the sand tank and sand-throwing component of the present invention;

[0037] Figure 7 This is a partial disassembly diagram of the sand guide bucket and sand throwing component of the present invention;

[0038] Figure 8 This is a schematic diagram of the structure of the neck-expanding bucket and the ball-head component of the present invention;

[0039] Figure 9 This is a schematic diagram of the structure of the airbag prism of the present invention;

[0040] Figure 10 This is a schematic diagram of the structure of the expanded neck bucket of the present invention;

[0041] Figure 11 This is a schematic diagram of the assembly structure of the straight guide rod and the rubber diaphragm of the present invention;

[0042] Figure 12 This is a schematic diagram of the straight pipe and air duct of the present invention;

[0043] Figure 13 This is a bottom view of the sand-throwing component of the present invention;

[0044] Figure 14 This is a partial structural diagram of the sand collection component and the box body of the present invention;

[0045] Figure 15 This is a schematic diagram of a partial assembly structure of the guide frame and the third trolley of the present invention.

[0046] In the diagram: 1. Box body; 11. Transparent cover; 12. Sand filter screen; 13. Arc guide plate; 2. Sand-blowing assembly; 20. Fan; 21. Sand-throwing component; 22. Threaded rod; 23. First pulley; 24. Neck-expanding bucket; 25. Ball head component; 201. Longitudinal rod; 202. Horizontal rod; 26. Straight pipe; 27. Sand tank; 28. Sand guide bucket; 29. ​​Small magnetic valve tube; 210. Large magnetic valve tube; 211. Filling port; 212. Magnetic bead; 213. Flexible neck tube; 214. Bulb; 241. Airbag prism component; 242. Curved baffle; 2 43. Elastic rib; 244. Bottom air cavity; 245. Extension section; 246. Inclined guide frame; 247. Straight guide rod; 248. Rubber diaphragm; 249. Push plate; 261. Air hopper; 262. Sponge plug; 263. Flexible folding section; 264. Memory metal wire; 265. Heating ball; 3. Experimental table; 4. Sand collection assembly; 41. Sand return box; 42. Sand return port; 43. Sand pump; 44. Gooseneck tube; 45. Guide frame; 46. Scraper; 47. Second pulley; 48. Clip connector; 49. Third pulley. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0048] First embodiment, such as Figures 1 to 15 As shown, the present invention provides a technical solution: a sandstorm environment simulation test bench and its application, including a box body 1, the box body 1 having a transparent cover 11, the transparent cover 11 covering half of the shell of the box body 1, and a sand filter screen 12 threadedly installed at both the front and rear ends of the box body 1, and a circular sand filter screen fixedly installed in the middle of the sand filter screen 12.

[0049] The simulation test assembly is used to simulate the formation of sandstorms and control the amount of sandstorms.

[0050] The simulation test assembly also includes:

[0051] The sand-blowing component 2 is used to control the release amount and release area of ​​sand. The sand-blowing component 2 is installed inside the rear end of the housing 1. The sand-blowing component 2 includes a blower 20 installed inside the rear end of the housing 1. The blower 20 is attached to the front side of the sand filter screen 12 inside the rear end of the housing 1. A sand-throwing component 21 is installed at the front end of the blower 20. The sand-throwing component 21 is used for autonomous sand throwing and can also adjust the initial sand throwing position.

[0052] The sand collection component 4 is used to collect and aggregate sand. The sand collection component 4 is installed on the inner front end of the box body 1 and is installed in close contact with the sand filter screen 12 on the inner front end of the box body 1. The sand collection component 4 includes a return sand box 41 fixedly installed on the inner front end of the box body 1, and the bottom end of the return sand box 41 is fixedly installed on the inner bottom plate of the box body 1. The return sand box 41 is used to collect the sand that has gathered at the inner front end of the box body 1.

[0053] An arc guide plate 13 is fixedly installed on the inner bottom of the box 1, and the arc guide plate 13 is set close to the sand return box 41. The arc guide plate 13 is bent towards the direction of the sand return box 41. An experimental platform 3 is installed on the inner bottom of the box 1, and the experimental platform 3 is installed between the arc guide plate 13 and the sand throwing component 21. The experimental platform 3 moves up and down on the inner bottom plate of the box 1. The arc guide plate 13 is set to prevent the sand from flowing back to the experimental platform 3 and to prevent the sand from interfering with the experiment.

[0054] The rear end of the sand-throwing component 21 is threaded with an expanded neck bucket 24, and the rear end of the expanded neck bucket 24 is threaded with a ball head component 25. A longitudinal rod 201 and a transverse rod 202 are respectively inserted into the ball head component 25 in the longitudinal and transverse directions. The longitudinal rod 201 and the transverse rod 202 are arranged perpendicularly to each other in a staggered manner through the ball head component 25. The ends of the longitudinal rod 201 and the transverse rod 202 are threaded with threaded rods 22. The end of the threaded rod 22 away from the longitudinal rod 201 is threaded with a first trolley 23. The first trolley 23 is slidably installed on the inner side of the box body 1. The sand-throwing component 21 moves left and right on the inner side of the box body 1 through the cooperation of the longitudinal rod 201, the threaded rod 22 and the first trolley 23.

[0055] A straight pipe 26 is threaded to the end of the ball head 25 away from the neck hopper 24. A sand jar 27 is assembled inside the sand throwing part 21, and the sand throwing part 21 is sealed between the neck hopper 24 and the sand jar 27. The sand jar 27 is used to hold sand. A push part is recessed inward in the middle of the side of the sand jar 27 facing the neck hopper 24. The bottom of the inner side of the sand jar 27 is raised inward. A sand guide hopper 28 is inserted on the outer surface of the end of the sand throwing part 21 away from the neck hopper 24.

[0056] Three sets of small magnetic valve tubes 29 and three sets of large magnetic valve tubes 210 are connected between the sand tank 27 and the inner wall of the sand throwing component 21, near the bottom. The small magnetic valve tubes 29 and large magnetic valve tubes 210 are arranged one in front of the other inside the sand throwing component 21. The interfaces connecting the small magnetic valve tubes 29 and large magnetic valve tubes 210 to the inner side of the sand tank 27 are distributed in a front-to-back manner on the inward bulge at the bottom of the sand tank 27, which facilitates the diversion of sand into two streams and guiding them into the magnetic valve tube structure. The small magnetic valve tubes 29 and large magnetic valve tubes 210 are telescopically connected to the sand tank 27. The bottom ends of the small magnetic valve tubes 29 and large magnetic valve tubes 210 penetrate the sand throwing component 21 and have three sets of small holes and three sets of large holes. The small holes are located in front of the large holes.

[0057] The sand-throwing component 21 has an opening 211 on the side near the sand guide hopper 28. The inner wall of the opening 211 has a double-section ball cavity arranged in a circular array. A magnetic bead 212 is installed in the double-section ball cavity and slides within it. The sand guide hopper 28 is secured in the opening 211 by the magnetic bead 212. The part where the sand guide hopper 28 is inserted into the opening 211 has a magnetic ball groove arranged in a circular array. The magnetic bead 212 is magnetically attracted and engaged with the magnetic ball groove. A flexible neck tube 213 is telescopically connected between the opening 211 and the sand tank 27. A bulge 214 is fixedly installed on the outer surface of the sand-throwing component 21 near the opening 211. When the air pressure inside the sand-throwing component 21 is pushed, the bulge 214 expands outward.

[0058] The neck-expanding bucket 24 has an overall flared, bottleneck-shaped design to increase wind resistance when airflow passes through its sides. This design also briefly pressurizes the airflow locally within the bucket, further accelerating its velocity and allowing sand to be blown away smoothly. Airbag prisms 241 are embedded in a circular array on the outer surface of the neck-expanding bucket 24. Curved baffles 242 are fixedly connected to both ends of each airbag prism 241. The curved baffles 242 are made entirely of elastic material. A bottom air chamber 244 is formed in the center of the bottom of each airbag prism 241. An elastic rib 243 is fixedly connected to the inner side of 241. The elastic rib 243 is fixedly connected to the neck-expanding bucket 24 through the bottom air cavity 244. An extension portion 245 is provided in the middle of the side of the airbag prism 241. The bottom ends of the airbag prism 241 and the curved baffle 242 are both fixedly connected to the neck-expanding bucket 24. The curved baffle 242 can be used to guide the air to bend and flow back into the inner side of the airbag prism 241, so that the air can quickly fill the inner cavity of the airbag prism 241 and help accelerate the speed at which the airbag prism 241 inflates from the neck-expanding bucket 24.

[0059] An inclined guide frame 246 is installed on the inner side of the end of the expanded neck bucket 24 facing the sand-throwing component 21. A straight guide rod 247 is threaded onto the middle of the inclined guide frame 246. A spring is fixedly connected between the inclined guide frame 246 and the pushing part, and the spring is fitted onto the straight guide rod 247. A rubber diaphragm 248 is installed in the middle of the end of the expanded neck bucket 24 facing the sand-throwing component 21. A pushing plate 249 is installed in the middle of the rubber diaphragm 248. The pushing plate 249 and the rubber diaphragm 248 are at an angle. Four sets of guide strips are installed in a circular array. The push plate 249 is located in the center of the four sets of guide strips. The guide strips are not connected to the push plate 249. The guide strips are used to guide the deformation force point of the rubber diaphragm 248, which is deformed by air pressure, to the middle of the push plate 249. The straight guide rod 247 is rotatably connected to the middle of the push plate 249 at one end near the rubber diaphragm 248. The inclined guide frame 246 guides the straight guide rod 247 upward at an angle.

[0060] When in use, first place the artificial scene to be simulated on the experimental table 3, then turn on the fan 20 to drive the airflow inside the box 1 from back to front. The wind force is controlled by controlling the output power of the fan 20.

[0061] Then, by activating the small magnetic valve tube 29, the sand flows out obliquely downward from the bottom of the sand-throwing component 21 under the action of gravity. Through the airflow around the sand-throwing component 21, a sandstorm environment is formed inside the box 1, and the sandstorm is used to attack the artificial scene on the experimental platform 3.

[0062] Finally, by activating the first pulley 23 to locally change the longitudinal sand throwing and flying range of the sand throwing component 21, the simulation of environmental changes with different sand content is achieved. Furthermore, by changing the blowing intensity of the fan 20, the intensity of sand erosion can be changed, thus completing the artificial simulation process of adjusting the intensity of sand erosion. Therefore, through the above operations, the simulation experiment of the sand erosion environment is completed.

[0063] It can also drive the artificial scene to make vertical lifting and lowering movements inside the box 1 through the experimental platform 3, so as to actively adjust the erosion height of the artificial scene in the simulated wind and sand environment inside the box 1. In this way, the erosion changes of the artificially simulated wind and sand on the artificial scene of a specific design can be observed through the transparent cover 11, so as to realize the automatic simulation function of wind and sand erosion environment of different altitudes.

[0064] The sand filter plates 12 installed at the front and rear ends of the chamber 1 can ensure that the chamber 1 maintains a balance with the external air pressure, while also facilitating the unidirectional blowing of the simulated wind pressure inside the chamber 1 by the fan 20, without being disturbed by external factors, and will not affect the artificial simulation of sand formation inside the chamber 1. Secondly, the sand filter plates 12 can block sand particles inside the chamber 1, preventing a large amount of sand from being lost and avoiding sand contamination of the experimental environment outside the chamber 1. Furthermore, the sand can be intercepted inside the chamber 1, so that the sand collection component 4 can recycle and reuse the sand in the future, avoiding the tedious process of refilling with new sand for each experiment, saving manpower and resources.

[0065] During the use of the experimental platform, airflow can be guided into the straight pipe 26 through the air bucket 261. The airflow is further guided by the ball head 25 and the neck expansion bucket 24, and finally introduced into the airbag prism 241 through the bottom air chamber 244, so that the airbag prism 241 is lifted by the airflow. During this period, the elastic rib 243 is pulled and stretched away from the neck expansion bucket 24, and the extension 245 is stretched from the initial folded state to the extended state. The entire airbag prism 241 bulges from the surface of the neck expansion bucket 24, thereby dividing the airflow passing through the side of the neck expansion bucket 24 into a circular array and evenly distributing it. This concentrates and guides each stream of air passing through the side of the neck expansion bucket 24, thereby enhancing the strength of the airflow adhering to the surface of the sand-throwing component 21 and guiding it forward.

[0066] The flared neck bucket 24 is designed with an overall flared neck shape to increase the air resistance when the airflow passes through the sides of the flared neck bucket 24. This is used to briefly pressurize the airflow locally in the flared neck bucket 24, and with the help of the airbag prism 241 to guide the flow, further accelerating the airflow velocity. This allows the sand released from inside the sand-throwing component 21 to be smoothly carried away by the airflow and not fall directly onto the bottom plate inside the box 1. This achieves effective sand entrainment by the sand-throwing component 21 with the help of the fan 20, thereby simulating a sandstorm environment.

[0067] During simulated sandstorms, the airflow can continue to be guided by the expanding neck hopper 24, causing the airflow entering the expanding neck hopper 24 to blow against the rubber diaphragm 248. The guide spring concentrates the deformation force point to the middle of the push plate 249, and the push plate 249 pushes the straight guide rod 247 to rotate clockwise in the middle of the inclined guide frame 246. Under the inclined guidance of the inclined guide frame 246, the straight guide rod 247 compresses the spring and, corresponding to the position of the push part, pushes the sand tank 27 upwards at an angle, causing the tail end of the sand tank 27 to slowly tilt up. This automatically guides the sand contained in the sand tank 27 into the small magnetic valve tube 29 and the large magnetic valve tube 210, ensuring that the sandstorm component 2 can maintain a continuous output of sand from the magnetic valve tube structure without interruption, regardless of which magnetic valve tube structure is opened.

[0068] Furthermore, through the aforementioned operation, namely the threaded torsion and pushing action of the straight guide rod 247 on the sand container 27, the sand can be completely drained from the inside of the sand container 27 without leaving any sand particles. This avoids the problem of manually cleaning the sand container 27 and also facilitates the statistics of the total amount of sand refilled, making it easier to accurately count and summarize the total amount of sand changes in the wind and sand environment simulation experiment.

[0069] Since the sand-throwing component 21 forms a closed space between the expanded neck hopper 24 and the sand tank 27, the air pressure inside the sand-throwing component 21 can be pushed into the bulge 214 by the rubber diaphragm 248 being pushed inward by air pressure. While maintaining the air pressure inside the sand-throwing component 21 through the bulge 214, the thrust of the bulge 214 during subsequent recovery provides an air spring for the inside of the sand-throwing component 21.

[0070] After the blower 20 stops, the airflow stops blowing on the rubber diaphragm 248. The rebound action of the guide rail and the spring causes the straight guide rod 247 to push the pusher plate 249 counterclockwise along the inclined guide frame 246. Simultaneously, the gas pushed into the bulge 214 is pushed back into the sand-throwing component 21, creating an air thrust that pushes the rubber diaphragm 248 from the sand-throwing component 21 towards the inside of the expanding neck hopper 24, causing it to deform. This propels the distributed air inside the expanding neck hopper 24 towards the ball head 25, the straight pipe 26, and the air hopper 261. The side drum pushes; and during this period, the airbag prism 241, with the combined rebound of the elastic rib 243 and the extension 245, also forms a comprehensive airflow thrust inside the neck hopper 24, thereby jointly achieving the blowing effect at the port of the air hopper 261. In other words, after the test bench is closed, it can automatically blow and clean the inside of the air hopper 261, effectively blowing away any sand or dust that may have accumulated or blocked inside the air hopper 261, preventing sand and dust from accumulating inside the air hopper 261 and affecting subsequent use, avoiding the complicated operation of manual disassembly and cleaning, reducing maintenance costs, and simplifying the use method.

[0071] By setting the small magnetic valve tube 29 and the large magnetic valve tube 210, the front and back positions of the sand falling from the bottom of the sand throwing component 21 can be precisely controlled, thereby controlling the distance at which the sand is carried by the airflow and blown onto the experimental platform 3. By controlling whether the small magnetic valve tube 29 or the large magnetic valve tube 210 is activated, the total amount of sand discharged from the bottom of the sand throwing component 21 per unit time can also be automatically controlled, thereby automatically controlling the total sand content of the wind and sand. Combined with the control of the output power of the blower 20, the level of simulated wind and sand can be controlled.

[0072] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figure 8 and Figure 12As shown, the straight tube 26 is connected to a hopper 261 at one end away from the ball head 25. A sponge plug 262 is fixedly installed on the side of the hopper 261 away from the straight tube 26. Flexible folding parts 263 are installed in a circular array on the outer surface of the hopper 261. A memory metal wire 264 is connected in a circular shape on the inner side of the hopper 261. When heated, the memory metal wire 264 curls and deforms towards the center. An electric heating ball 265 is fixedly installed in the middle of the memory metal wire 264. The memory metal wire 264 is heated and contracted through the electric heating ball 265, which pulls the tail end of the hopper 261 to close, and causes the sponge plug 262 to converge and move closer to the central axis of the hopper 261.

[0073] Among them, the air bucket 261 is connected to the airbag prism 241 through the straight pipe 26, the ball head component 25 and the bottom air cavity 244. The air bucket 261 is also connected to the neck expansion bucket 24 through the straight pipe 26 and the ball head component 25.

[0074] After the experimental platform is shut down and the air hopper 261 has been cleaned by its own blowing, the heating ball 265 can be used to heat the memory metal wire 264. Utilizing the characteristic of the memory metal wire 264 to deform and curl when heated, the tail end of the air hopper 261 is automatically closed. Combined with the filling and shielding of the tail end of the air hopper 261 by the sponge plug 262, it can effectively prevent the air hopper 261 from being blocked by foreign objects or dust accumulation during non-use, and activate the automatic closing dustproof protection effect. This provides a safe operating guarantee for the use of the air hopper 261 with the sand-throwing component 21. It can be put into use directly without the need for self-inspection and cleaning before the next use.

[0075] Furthermore, when in use, the heating element 265 can de-heat the shape memory wire 264, and under the blowing action of the fan 20 on the air bucket 261, the shape memory wire 264 can be quickly cooled down, so that the air bucket 261 can be put into use quickly.

[0076] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figure 2 , Figure 14 and Figure 15 As shown, the sand return box 41 is attached to the upper edge of the filter screen plate 12 and the sand return box 41 is attached to the lower edge of the bottom plate inside the box body 1. A sand pump 43 is fixedly installed at the top center of the sand return box 41. The output end of the sand pump 43 is threadedly connected to a gooseneck tube 44. The top of the gooseneck tube 44 is threadedly connected to a guide tube frame 45. The guide tube frame 45 is threadedly installed with snap-fit ​​connectors 48 in a rectangular array. The snap-fit ​​connectors 48 snap-fit ​​with the sand guide bucket 28. The output end of the snap-fit ​​connectors 48 is protruding, so that when snap-fit ​​with the sand guide bucket 28, it can be inserted into the inside of the sand guide bucket 28 first and then transport sand into the sand guide bucket 28.

[0077] The guide frame 45 is threaded with a third trolley 49 on both its left and right sides. The guide frame 45 slides in the front and back positions inside the box 1 via the third trolley 49. A scraper 46 is attached to the bottom of the box 1 and is attached to the front side of the arc guide plate 13. A second trolley 47 is fitted on both its left and right sides. The scraper 46 slides in the front and back positions inside the box 1 via the second trolley 47. The scraper 46 is used to push the sand accumulated on the bottom plate inside the box 1 and located between the arc guide plate 13 and the return sand box 41 into the return sand inlet 42 at the bottom of the return sand box 41 for recycling.

[0078] The sand is carried by the blower 20, so that most of the sand, after impacting the artificial scene, is guided by the experimental platform 3 and the arc guide plate 13 to gather on the bottom plate between the arc guide plate 13 and the sand return box 41. The second trolley 47 is activated to drive the scraper 46 to slide forward on the bottom plate. The scraper 46 pushes the sand into the sand return port 42 opened at the bottom corner of the sand return box 41. Another part of the sand is blown into the sand return port 42 on the top edge of the sand return box 41 during the sandstorm simulation. The sand is collected into the sand return box 41 through the sand return ports 42 at these two locations, thus completing the recycling of most of the sand.

[0079] Subsequently, the sand-blowing component 2, after being shut down, will return to its initial operating position under the sliding motion of the first pulley 23. Then, the third pulley 49 can be activated to move the guide frame 45 and the clamping connector 48 on the guide frame 45 backward to the front of the sand-throwing component 21. During this period, the gooseneck tube 44 is stretched and extends as the guide frame 45 moves backward. Then, the third pulley 49 is activated again to move the protruding part of the clamping connector 48 into the sand guide bucket 28, and then the movement stops. Then, the sand pump 43 is activated, and guided by the guide frame 45 and the clamping connector 48, the recovered sand is automatically transported into the sand tank 27, realizing the autonomous recycling and reuse of sand and saving sand resources.

[0080] During this period, instead of returning the sand to the sand tank 27, the guide frame 45 can be moved backward to engage the clamping joint 48 with the sand guide bucket 28. Then, the third pulley 49 drives the guide frame 45 to move backward, automatically pulling the sand guide bucket 28 out of the loading port 211. Then, the staff can observe through the transparent cover 11 to perform a self-inspection of the sand guide bucket 28 without contact, checking whether the sand guide bucket 28 is damaged or worn, which would delay the delivery of sand. This ensures that the total amount of sand poured into the sand tank 27 is not affected by the sand guide bucket 28 and does not interfere with the wind and sand simulation experiment data.

[0081] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A sandstorm environment simulation test bench, comprising: Box (1), which has a transparent cover (11) covering half of the shell of the box (1), and the front and rear ends of the box (1) are threaded with filter screen plates (12), and a circular filter screen is fixedly installed in the middle of the filter screen plate (12). The simulation test assembly is used to simulate the formation of sandstorms and control the amount of sandstorms. The simulation experiment assembly is characterized by further including: A sand-blowing component (2) is used to control the amount and area of ​​sand release. The sand-blowing component (2) is installed on the inner rear end of the box (1). The sand-blowing component (2) includes a fan (20) installed on the inner rear end of the box (1). The fan (20) is attached to the front side of the filter screen plate (12) on the inner rear end of the box (1). A sand-throwing component (21) is installed at the front end of the fan (20). The sand-throwing component (21) is used for autonomous sand throwing and can also adjust the initial sand-throwing position. The sand collection component (4) is used to collect and aggregate sand. The sand collection component (4) is installed on the inner front end of the box body (1) and is installed close to the sand filter screen (12) on the inner front end of the box body (1). The sand collection component (4) includes a return sand box (41) fixedly installed on the inner front end of the box body (1), and the bottom end of the return sand box (41) is fixedly installed on the inner bottom plate of the box body (1). The return sand box (41) is used to collect the sand that has gathered on the inner front end of the box body (1). The rear end of the sand-throwing component (21) is threaded with an expanded neck bucket (24), and the rear end of the expanded neck bucket (24) is threaded with a ball head component (25). The ball head component (25) is fitted with a longitudinal rod (201) and a transverse rod (202) in the longitudinal and transverse directions, respectively. The longitudinal rod (201) and the transverse rod (202) are vertically arranged in a staggered manner through the ball head component (25). The ends of the longitudinal rod (201) and the transverse rod (202) are threaded with threaded rods (22). The end of the threaded rod (22) away from the longitudinal rod (201) is threaded with a first trolley (23). The first trolley (23) is slidably installed on the inner side of the box body (1). The sand-throwing component (21) moves left and right on the inner side of the box body (1) through the cooperation of the longitudinal rod (201), the threaded rod (22) and the first trolley (23). The ball head (25) is threaded with a straight pipe (26) at the end away from the neck-expanding bucket (24). A sand jar (27) is assembled inside the sand throwing component (21), and the sand throwing component (21) is sealed between the neck-expanding bucket (24) and the sand jar (27). The sand jar (27) is used to hold sand. A pushing part is recessed inward in the middle of the side of the sand jar (27) facing the neck-expanding bucket (24). The bottom end of the inner side of the sand jar (27) is raised inward. A sand guide bucket (28) is inserted on the outer surface of the end of the sand throwing component (21) away from the neck-expanding bucket (24). Three sets of small magnetic valve tubes (29) and three sets of large magnetic valve tubes (210) are connected between the sand tank (27) and the inner wall of the sand throwing component (21) and near the bottom. The small magnetic valve tubes (29) and the large magnetic valve tubes (210) are arranged one in front of the other on the inner side of the sand throwing component (21). The interfaces of the small magnetic valve tubes (29) and the large magnetic valve tubes (210) connected to the inner side of the sand tank (27) are distributed in front of the bottom of the sand tank (27) at the raised part inward. The small magnetic valve tubes (29) and the large magnetic valve tubes (210) are telescopically connected to the sand tank (27). The bottom ends of the small magnetic valve tubes (29) and the large magnetic valve tubes (210) penetrate the sand throwing component (21) and are provided with three sets of small holes and three sets of large holes. The small holes are located in front of the large holes. The sand-throwing component (21) has an opening (211) on the side near the sand guide hopper (28). The inner wall of the opening (211) has a double-section ball cavity in a circular array. A magnetic bead (212) is installed in the double-section ball cavity. The magnetic bead (212) slides in the double-section ball cavity. The sand guide hopper (28) is clamped in the opening (211) by the magnetic bead (212). The part where the sand guide hopper (28) and the opening (211) are inserted has a magnetic ball groove in a circular array. The magnetic bead (212) is magnetically attracted and embedded in the magnetic ball groove. A flexible neck tube (213) is telescopically connected between the opening (211) and the sand tank (27). A bulge (214) is fixedly installed on the outer surface of the sand-throwing component (21) near the opening (211). The overall design of the neck-expanding bucket (24) is a flared bottleneck. Airbag prisms (241) are installed in a circular array on the outer surface of the neck-expanding bucket (24). Curved baffles (242) are fixedly connected to both the front and rear ends of the airbag prisms (241). The curved baffles (242) are made of elastic material. A bottom air cavity (244) is opened in the middle of the bottom end of the airbag prisms (241). An elastic rib (243) is fixedly connected to the inner side of the airbag prisms (241). The elastic ribs (243) are fixedly connected to the neck-expanding bucket (24) through the bottom air cavity (244). An extension part (245) is provided in the middle of the side of the airbag prisms (241). The bottom ends of the airbag prisms (241) and the curved baffles (242) are fixedly connected to the neck-expanding bucket (24). An inclined guide frame (246) is mounted on the inner side of the end of the expanding neck bucket (24) facing the sand throwing component (21). A straight guide rod (247) is threaded onto the middle of the inclined guide frame (246). A spring is fixedly connected between the inclined guide frame (246) and the pushing part, and the spring is fitted onto the straight guide rod (247). A rubber diaphragm (248) is installed in the middle of the end of the expanding neck bucket (24) facing the sand throwing component (21). There is a push plate (249), and four sets of guide strips are installed in a circular array between the push plate (249) and the rubber diaphragm (248). The push plate (249) is located in the center of the four sets of guide strips. The guide strips are not connected to the push plate (249). The straight guide rod (247) is rotatably connected to the middle of the push plate (249) at one end near the rubber diaphragm (248). The inclined guide frame (246) guides the straight guide rod (247) upward at an angle. The straight tube (26) is connected to a hopper (261) at one end away from the ball head (25). A sponge plug (262) is fixedly installed on the side of the hopper (261) away from the straight tube (26). Flexible folding parts (263) are installed in a circular array on the outer surface of the hopper (261). A memory metal wire (264) is connected in a circular shape on the inner side of the hopper (261). When heated, the memory metal wire (264) curls and deforms towards the middle. An electric heating ball (265) is fixedly installed in the middle of the memory metal wire (264). Among them, the air bucket (261) is connected to the airbag prism (241) through the straight pipe (26), the ball head (25) and the bottom air cavity (244), and the air bucket (261) is also connected to the neck expansion bucket (24) through the straight pipe (26) and the ball head (25).

2. The wind and sand environment simulation experimental platform according to claim 1, characterized in that: An arc guide plate (13) is fixedly installed on the inner bottom of the box (1), and the arc guide plate (13) is set close to the sand return box (41). The arc guide plate (13) is bent towards the direction of the sand return box (41). An experimental platform (3) is installed on the inner bottom of the box (1) and is installed between the arc guide plate (13) and the sand throwing component (21). The experimental platform (3) moves up and down on the inner bottom plate of the box (1).

3. The wind and sand environment simulation experimental platform according to claim 2, characterized in that: The return sand box (41) is attached to the upper edge of the filter screen plate (12) and the return sand box (41) is attached to the lower edge of the bottom plate inside the box body (1). A sand pump (43) is fixedly installed at the top center of the return sand box (41). The output end of the sand pump (43) is threadedly connected to a gooseneck tube (44). The top of the gooseneck tube (44) is threadedly connected to a guide frame (45). The guide frame (45) is threadedly installed with snap-fit ​​connectors (48) in a rectangular array. The snap-fit ​​connectors (48) are snapped into the sand guide bucket (28), and the output end of the snap-fit ​​connectors (48) is protruding. The guide frame (45) is threaded with a third trolley (49) on both the left and right sides. The guide frame (45) slides in the front and back positions inside the box (1) via the third trolley (49). A scraper (46) is attached to the bottom of the box (1) and is attached to the front side of the arc guide plate (13). A second trolley (47) is fitted on both the left and right sides of the scraper (46). The scraper (46) slides in the front and back positions inside the box (1) via the second trolley (47).

4. An application of the wind and sand environment simulation experimental platform according to any one of claims 2 to 3, characterized in that, Includes the following steps: Step 1: First, fix the artificial scene to be simulated on the experimental table (3), then turn on the fan (20) to drive the airflow inside the box (1) to blow from back to front. Control the wind force by controlling the output power of the fan (20); Step 2: Then, by activating the small magnetic valve tube (29), the sand flows out from the bottom of the sand-throwing component (21) under the action of gravity. Through the airflow around the sand-throwing component (21), a sandstorm environment is formed inside the box (1), and the sandstorm is used to attack the artificial scene on the experimental platform (3). During this period, by activating the first pulley (23) to locally change the longitudinal sand throwing and flying range of the sand throwing component (21), the simulation of environmental changes with different sand content can be realized. The wind intensity of the blower (20) can also be changed to change the sand erosion intensity, thus completing the artificial simulation process of adjusting the sand erosion intensity. Therefore, through the above operations, the simulation experiment of the sand environment is completed.

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