Middle school geographical river erosion and deposition simulation experiment demonstration device

Abstract

The invention discloses a middle school geographical river erosion and deposition simulation experiment demonstration device, which comprises a transparent box, a riverbed model device and a water flow control device, and is characterized in that the riverbed model device comprises an adjusting support assembly and a plurality of riverbed assemblies, and the adjusting support assembly is movably arranged in the transparent box; the plurality of riverbed assemblies are hung on one side of the adjusting bracket assembly; the water flow control device comprises a water tank and a water flow control assembly, and the water tank is arranged on one side of the transparent box; the water flow control assembly is arranged above the transparent box and connected with the water tank. Therefore, the experimental device can accurately regulate and control experimental conditions and truly simulate river erosion and deposition, students can autonomously design experiments, adjust parameters and observe results, the learning interest is stimulated, the initiative is improved, and the device is suitable for various teaching scenes and provides intuitive and interactive learning experience for the students.

Description

Technical Field

[0001] The present application relates to the technical field of educational and teaching auxiliary equipment, and in particular to a middle school geography river erosion and sedimentation simulation experiment demonstration device. Background Art

[0002] In geography, river erosion and sedimentation are not only key processes in the shaping of natural landforms, but also an important basis for understanding the dynamic changes of the earth's surface, the evolution of water system patterns, and the response mechanism of the ecological environment. The complexity of knowledge in this field lies in the interaction of multiple natural factors, such as water flow velocity, riverbed material, terrain slope, rainfall, etc., which jointly affect the erosion capacity and sedimentation pattern of rivers.

[0003] Although the traditional teaching model attempts to convey these complex processes through detailed text descriptions and rich pictures, it is limited to the two-dimensional expression form and cannot fully demonstrate the three-dimensional dynamic characteristics of river erosion and sedimentation and their continuity over time. Students can only passively accept information and lack personal experience and intuitive feelings, which not only affects their in-depth understanding of knowledge points, but also makes it difficult to stimulate their curiosity and thirst for knowledge to explore the mysteries of nature.

[0004] In addition, river erosion and sedimentation also involve complex physical and chemical processes, such as the scouring, transportation, and sorting of riverbed materials by water flow, as well as the compaction and cementation of sediments. These processes are difficult to reproduce vividly in static teaching materials. Therefore, students are prone to encounter obstacles when constructing relevant conceptual models, and it is difficult to form a comprehensive and accurate knowledge system.

[0005] In summary, the teaching content of river erosion and sedimentation in geography urgently needs a more intuitive and interactive teaching method to make up for the shortcomings of the traditional teaching model. This demand is not only reflected in improving teaching effects, but also in cultivating students' observation, analysis and problem-solving abilities, so that they can better understand and deal with complex phenomena in nature, and lay a solid theoretical foundation and practical ability for future environmental protection and sustainable development. However, it is worth noting that although the shortcomings of the existing teaching model and the necessity of reform are pointed out, the design of specific solutions or experimental devices is not further developed here, which leaves room for further research and development. Summary of the invention

[0006] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0007] To this end, one purpose of the present application is to provide a middle school geography river erosion and deposition simulation experiment demonstration device, which can accurately control experimental conditions, such as water flow velocity, water volume, riverbed material, terrain slope, etc., so as to truly simulate the complex process of river erosion and deposition. This accuracy helps students to deeply understand the formation mechanism of river landforms and improve teaching effectiveness.

[0008] To achieve the above-mentioned objectives, the first embodiment of the present application proposes a middle school geography river erosion and deposition simulation experiment demonstration device, comprising a transparent box, a riverbed model device and a water flow control device, wherein the riverbed model device comprises an adjusting bracket assembly and a plurality of riverbed assemblies, wherein the adjusting bracket assembly can be movably arranged in the transparent box; a plurality of the riverbed assemblies are hung on one side of the adjusting bracket assembly; the water flow control device comprises a water tank and a water flow control assembly, wherein the water tank is arranged on one side of the transparent box; the water flow control assembly is arranged above the transparent box, and the water flow control assembly is connected to the water tank.

[0009] The embodiment of the present application is a middle school geography river erosion and deposition simulation experiment demonstration device, which can accurately control the experimental conditions and truly simulate river erosion and deposition. Students can independently design experiments, adjust parameters and observe results, stimulate learning interest and improve initiative. The device is suitable for a variety of teaching scenarios and provides students with an intuitive and interactive learning experience.

[0010] In addition, the middle school geography river erosion and sedimentation simulation experiment demonstration device proposed in the present application may also have the following additional technical features:

[0011] In one embodiment of the present application, the adjustment bracket assembly includes a base plate, a support plate, a plurality of grooves and a fixing rod, wherein the base plate is arranged in the transparent box; one end of the support plate is hinged to one end of the base plate; a plurality of grooves are respectively and equidistantly arranged on the base plate; one end of the fixing rod is movably arranged at the bottom of the support plate, and the other end is respectively inserted into the plurality of grooves.

[0012] In one embodiment of the present application, the plurality of riverbed components each include two hooks, a hanging plate and a hanging net, wherein one end of the two hooks are respectively connected to the hanging plates, and the two hooks are movably connected to one end of the support plate; the hanging net is arranged on the hanging plate, and the hanging net is respectively provided with sand, gravel, clay, etc.

[0013] In one embodiment of the present application, the water flow control component includes a support frame, a water pump, a pipeline, an adjustable valve, a flow meter and a water outlet, wherein the support frame is movably arranged on one side of the transparent box; the water pump is arranged on the water tank; one end of the pipeline is connected to the water tank, and the other end is connected to the water pump; the adjustable valve is arranged at the top of the support frame, and the adjustable valve is connected to the pipeline; the flow meter is arranged at the bottom of the support frame, and the flow meter is connected to the pipeline; the water outlet is arranged at the bottom of the flow meter.

[0014] In one embodiment of the present application, markers of different colors (such as colored powder, dyed sand) are set on the hanging net. When eroded or deposited, the color change can clearly show the boundary of erosion and deposition.

[0015] In one embodiment of the present application, a switch is provided on the water pump.

[0016] The advantages of this application compared with the existing technology are:

[0017] (1) The experimental device can accurately control experimental conditions, such as water flow velocity, water volume, riverbed material, terrain slope, etc., so as to truly simulate the complex process of river erosion and deposition. This precision helps students to deeply understand the formation mechanism of river landforms and improve teaching effectiveness.

[0018] (2) Students can actively participate in experimental design, adjust experimental parameters according to learning needs, and observe experimental results under different conditions. This participatory learning method can stimulate students' interest in learning and enhance their initiative and interest in learning.

[0019] (3) The experimental device is suitable for a variety of teaching scenarios, such as classroom teaching, extracurricular exploration, science exhibitions, etc. Whether it is theoretical explanation in the classroom or outdoor field trips, it can provide students with intuitive experimental materials and interactive learning experiences.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0022] Figure 1 A three-dimensional diagram of a demonstration device for a middle school geography river erosion and sedimentation simulation experiment according to an embodiment of the present application;

[0023] Figure 2A three-dimensional diagram of a demonstration device for a middle school geography river erosion and sedimentation simulation experiment according to another embodiment of the present application;

[0024] Figure 3 It is a structural schematic diagram of a middle school geography river erosion and sedimentation simulation experiment demonstration device according to one embodiment of the present application;

[0025] Figure 4 It is a structural schematic diagram of a middle school geography river erosion and sedimentation simulation experiment demonstration device according to another embodiment of the present application;

[0026] Figure 5 A three-dimensional diagram of an adjustment bracket assembly of a demonstration device for a middle school geography river erosion and sedimentation simulation experiment according to an embodiment of the present application;

[0027] Figure 6 A three-dimensional diagram of an adjustment bracket assembly of a demonstration device for a middle school geography river erosion and sedimentation simulation experiment according to another embodiment of the present application;

[0028] Figure 7 for Figure 2 Schematic diagram of the enlarged structure of part A in FIG.

[0029] As shown in the figure: 1. Transparent box; 2. Riverbed model device; 3. Water flow control device; 21. Adjustment bracket assembly; 22. Riverbed assembly; 31. Water tank; 32. Water flow control assembly; 211. Bottom plate; 212. Support plate; 213. Groove; 214. Fixing rod; 221. Hook; 222. Hanging plate; 223. Hanging net; 321. Support frame; 322. Water pump; 323. Pipeline; 324. Adjustable valve; 325. Flow meter; 326. Water outlet; 3221. Switch. DETAILED DESCRIPTION

[0030] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0031] A middle school geography river erosion and sedimentation simulation experiment demonstration device according to an embodiment of the present application is described below in conjunction with the accompanying drawings.

[0032] like Figure 1-Figure 7As shown, a middle school geography river erosion and deposition simulation experiment demonstration device of an embodiment of the present application may include a transparent box 1, a riverbed model device 2 and a water flow control device 3, wherein the riverbed model device 2 includes an adjusting bracket assembly 21 and a plurality of riverbed assemblies 22, wherein the adjusting bracket assembly 21 can be movably arranged in the transparent box 1, and the plurality of riverbed assemblies 22 are hung on one side of the adjusting bracket assembly 21, and the water flow control device 3 includes a water tank 31 and a water flow control assembly 32, wherein the water tank 31 is arranged on one side of the transparent box 1, the water flow control assembly 32 is arranged above the transparent box 1, and the water flow control assembly 32 is connected to the water tank 31.

[0033] It is understandable that the transparent box 1 is the basic part of the whole experimental demonstration device, which provides a closed and transparent experimental environment. The material of the transparent box 1 is selected from high-strength transparent plastic to ensure safety and observation effect during the experiment.

[0034] The adjusting support assembly 21 is movably arranged in the transparent box 1. It is mainly used to support and adjust the height and angle of the riverbed assembly 22 to simulate the river erosion and sedimentation process under different terrain conditions. The design of the adjusting support assembly 21 should be easy to adjust and stable and reliable to ensure the accuracy and safety of the experimental results.

[0035] The riverbed assembly 22 is a part simulating the riverbed bottom, and they are hung on one side of the adjustment bracket assembly 21. The material of the riverbed assembly 22 can be selected according to actual needs to simulate different types of riverbeds, such as sandy riverbeds, muddy riverbeds, etc.

[0036] The water tank 31 is arranged on one side of the transparent box 1 for storing water required for the experiment. The capacity of the water tank 31 should be large enough to meet the water demand during the experiment.

[0037] The water flow control assembly 32 is arranged above the transparent box 1 and is connected to the water tank 31. It is mainly used to control the flow rate and speed of the water flow to simulate the flow state of the river under different conditions.

[0038] Experimental process:

[0039] During the experiment, the adjustment bracket assembly 21 and the riverbed assembly 22 are first installed inside the transparent box 1 at a predetermined height and angle. Then, the water tank 31 is filled with water, and the required water flow speed and flow rate are adjusted through the water flow control assembly 32. Next, the switch of the water flow control assembly 32 is turned on to allow water to flow through the riverbed assembly 22 to perform erosion and deposition simulation experiments. The observer can clearly see the experimental process through the transparent box 1, and record and analyze the experimental results.

[0040] Experimental results:

[0041] Through this experimental demonstration device, the erosion and sedimentation phenomena of rivers under different conditions can be intuitively demonstrated. For example, by changing the height and angle of the adjustable bracket assembly 21, the erosion and sedimentation of rivers with different slopes can be simulated; by replacing the riverbed assembly 22 of different materials, the erosion and sedimentation process under different riverbed conditions can be simulated. These experimental results help students to deeply understand the geographical principles of river erosion and sedimentation and improve their interest and effectiveness in geography learning.

[0042] In one embodiment of the present application, Figure 5 As shown, the adjustment bracket assembly 21 includes a base plate 211, a support plate 212, a plurality of grooves 213 and a fixing rod 214, wherein the base plate 211 is arranged in the transparent box 1, one end of the support plate 212 is hinged to one end of the base plate 211, a plurality of grooves 213 are respectively and equidistantly arranged on the base plate 211, one end of the fixing rod 214 is movably arranged at the bottom of the support plate 212, and the other end is respectively inserted into the plurality of grooves 213.

[0043] It can be understood that the bottom plate 211 is the basic part of the entire adjustment bracket assembly 21 , which is arranged in the transparent box 1 .

[0044] The support plate 212 is a key part of the adjustment bracket assembly 21, and one end of the support plate 212 is hinged to one end of the bottom plate 211. This hinged connection enables the support plate 212 to rotate relative to the bottom plate 211, thereby adjusting the angle of the riverbed assembly 22.

[0045] A plurality of grooves 213 are equidistantly arranged on the bottom plate 211. The grooves 213 are used to fix the fixing rods 214, so as to adjust the height of the support plate 212.

[0046] One end of the fixing rod 214 is movably arranged at the bottom of the support plate 212, and the other end is respectively inserted into the plurality of grooves 213. By adjusting the position of the fixing rod 214 inserted into the groove 213, the height of the support plate 212 can be adjusted.

[0047] Functions of the adjustment bracket assembly 21:

[0048] The adjustable bracket assembly 21 realizes flexible adjustment of the height and angle of the riverbed assembly 22 through the organic combination of the bottom plate 211, the support plate 212, the plurality of grooves 213 and the fixing rod 214. This adjustment method can simulate the river erosion and sedimentation process under different terrain conditions, and provides an effective auxiliary tool for middle school geography teaching.

[0049] Specifically, the inclination angle and height of the riverbed assembly 22 can be changed by rotating the support plate 212 and adjusting the position of the fixing rod 214 in the groove 213. This adjustment method can simulate the flow state of the river on terrains with different slopes, thereby observing and analyzing the changing laws of river erosion and sedimentation phenomena.

[0050] In one embodiment of the present application, Figure 5 As shown, the multiple riverbed components 22 each include two hooks 221, a hanging plate 222 and a hanging net 223, wherein one end of the two hooks 221 are respectively connected to the hanging plates 222, and the two hooks 221 are movably connected to one end of the support plate 212, and the hanging net 223 is arranged on the hanging plate 222, and sand, gravel, clay, etc. are respectively arranged on the hanging net 223.

[0051] It can be understood that the hook 221 is an important component for connecting the hanging plate 222 and the support plate 212. One end of the two hooks 221 is connected to the two sides of the hanging plate 222 respectively to form a stable connection structure.

[0052] The hanging plate 222 is the main part of the riverbed assembly 22 and is used to support the hanging net 223 .

[0053] The hanging net 223 is a key part of simulating the river bed. It is set on the hanging plate 222 and is used to attach different types of sediments such as sand, gravel, clay, etc. The material of the hanging net 223 should be a durable mesh material to ensure that it can withstand the impact and erosion of the water flow during the experiment.

[0054] Functions of the riverbed component 22:

[0055] The riverbed component 22 realizes the simulation and adjustment of the riverbed through the organic combination of the hook 221, the hanging plate 222 and the hanging net 223.

[0056] By placing different types of sediments (such as sand, gravel, clay, etc.) on the hanging net 223, different types of riverbed conditions can be simulated. The distribution and combination of these sediments can be flexibly adjusted according to the experimental requirements to simulate different river erosion and deposition environments. During the experiment, the erosion and deposition phenomena of different types of sediments and their effects on the flow state of the river can be observed and analyzed.

[0057] The inclination angle and height of the riverbed assembly 22 can be adjusted by the movable connection between the two hooks 221 and the support plate 212. This adjustment method can simulate the flow state of the river on terrains with different slopes, so as to further observe and analyze the changing laws of river erosion and sedimentation phenomena.

[0058] In one embodiment of the present application, Figure 7As shown, the water flow control component 32 includes a support frame 321, a water pump 322, a pipeline 323, an adjustable valve 324, a flow meter 325 and a water outlet 326, wherein the support frame 321 is movably arranged on one side of the transparent box 1, the water pump 322 is arranged on the water tank 31, one end of the pipeline 323 is connected to the water tank 31, and the other end is connected to the water pump 322, the adjustable valve 324 is arranged on the top of the support frame 321, and the adjustable valve 324 is connected to the pipeline 323, the flow meter 325 is arranged at the bottom of the support frame 321, and the flow meter 325 is connected to the pipeline 323, and the water outlet 326 is arranged at the bottom of the flow meter 325.

[0059] It is understandable that the water pump 322 is installed on the water tank 31. The water pump 322 is the power source of the entire water flow system, and it is responsible for pumping the water in the water tank 31 out.

[0060] The pipe 323 is a key component connecting the water tank 31 and the water pump 322 , one end of which is connected to the water tank 31 , and the other end of which is closely connected to the water pump 322 .

[0061] An adjustable valve 324 is provided on the top of the support frame 321. This valve is connected to the pipe 323, allowing the user to adjust the flow of water as needed. By rotating the control component of the valve, the user can accurately control the degree of opening of the water flow, thereby achieving precise regulation of the water flow.

[0062] A flow meter 325 is installed at the bottom of the support frame 321. The flow meter 325 is also connected to the pipeline 323, and it can monitor and display the flow information of the water flow in real time. By reading the data on the flow meter 325, the user can clearly understand the flow situation of the current water flow.

[0063] Finally, a water outlet 326 is provided at the bottom of the flow meter 325. This is the output end of the water flow control assembly 32, where the precisely regulated and monitored water flow finally flows out.

[0064] In one embodiment of the present application, Figure 5 As shown, markers of different colors (such as colored powder, dyed sand) are set on the hanging net 223. When eroded or deposited, the color change can clearly show the boundary of erosion and deposition.

[0065] It is understood that before the experiment begins, according to the experimental design, markers of different colors are evenly sprinkled on specific areas on the hanging net 223. These areas can be erosion and deposition areas preset according to experimental requirements, or key positions on the riverbed model. The application of markers should ensure uniform color and firm adhesion so that changes in erosion and deposition can be accurately reflected during the experiment.

[0066] During the experiment, by introducing water flow or other factors that affect riverbed erosion and sedimentation, the changes in the color-marked area on the hanging net 223 are observed and recorded. The observation method mainly includes two aspects: color change and boundary recognition:

[0067] Color Changes: Pay close attention to color changes in color-coded areas, especially if the color fades or becomes more vivid. Fading colors may mean the area is experiencing erosion, while more vivid colors may mean the area is receiving sediment accumulation.

[0068] Boundary identification: By observing the changes in color-coded boundaries, the boundaries of erosion and deposition can be clearly identified. These boundary changes not only help to understand the spatial distribution of erosion and deposition, but also reveal their dynamic changes.

[0069] After the experiment is finished, the experimental results are explained and analyzed according to the changes of the color marks on the hanging net 223 and in combination with other observation data during the experiment (such as water flow velocity, changes in riverbed morphology, etc.).

[0070] Erosion process: The speed and extent of the receding color-coded areas can reflect the intensity and speed of erosion. By observing the erosion in different areas, we can understand the erosion pattern and influencing factors of the riverbed model.

[0071] Sedimentation process: The location and extent of color-coded areas becoming brighter or new colors appearing can reveal the source, type, and distribution characteristics of the sediments. This information helps understand the mechanisms and influencing factors of sedimentation.

[0072] Comprehensive understanding: Combining the changes in color coding with other observational data, we can comprehensively understand the natural process of river erosion and sedimentation and its geographical impact. This information is of great significance for the study of the evolution of river systems, the prediction of river disasters, and the formulation of river management and protection strategies.

[0073] In one embodiment of the present application, Figure 3 As shown, a switch 3221 is provided on the water pump 322 .

[0074] It is understandable that when the user needs to start the water pump 322, he only needs to gently press the start button of the switch 3221, and the motor inside the water pump 322 will start working, driving the pump body to rotate, thereby starting to extract and transport water.

[0075] When the user needs to stop the water pump 322, he only needs to press the stop button of the switch 3221, and the motor inside the water pump 322 will stop working, and the pump body will also stop rotating, thereby cutting off the water delivery.

[0076] Specific use process:

[0077] 1. Preparation

[0078] 1. Assembly device:

[0079] Place the transparent box 1 on a stable surface.

[0080] The bottom plate 211 of the adjustment bracket assembly 21 is placed in the transparent box 1 , and the angle and height of the support plate 212 are adjusted as needed by inserting the fixing rod 214 into different grooves 213 .

[0081] A plurality of riverbed assemblies 22 are hung on one end of the support plate 212 through the hook 221 to ensure that the hanging net 223 is flat and the sediment is evenly distributed.

[0082] Markers of different colors are sprinkled on the hanging mesh 223 according to the experimental design to distinguish the erosion and deposition areas.

[0083] 2. Connect the water flow control device:

[0084] Place the water tank 31 on one side of the transparent box 1 and ensure that it is stable.

[0085] The support frame 321 of the water flow control component 32 is movably arranged on one side above the transparent box 1 .

[0086] One end of the pipe 323 is connected to the water outlet of the water tank 31 , and the other end is connected to the water inlet of the water pump 322 .

[0087] Make sure that the adjustable valve 324 , the flow meter 325 and the water outlet 326 are all properly connected to the pipe 323 .

[0088] 3. Inspection device:

[0089] Check that all connection points are secure and there are no leaks.

[0090] Confirm that the switch 3221 of the water pump 322 is in the off state.

[0091] 2. Experimental Phase

[0092] 1. Start the water flow:

[0093] Open the lid of the water tank 31 and fill it with water.

[0094] Confirm that the power supply of the water pump 322 is connected, and press the start button of the switch 3221 to start the water pump 322.

[0095] Observe the reading of the flow meter 325 and adjust the adjustable valve 324 as needed to control the flow rate and speed of the water flow.

[0096] 2. Observe the experimental process:

[0097] Observe the riverbed assembly 22 in the transparent box 1 , especially the changes in the color markers on the hanging net 223 .

[0098] Record areas where colors fade and become more vivid, as well as boundary changes of erosion and deposition.

[0099] Adjust the water flow speed and flow as needed to observe erosion and deposition phenomena under different conditions.

[0100] 3. Record data:

[0101] During the experiment, data such as water flow velocity, changes in riverbed morphology, and boundaries of erosion and deposition areas were recorded regularly.

[0102] You can use a camera or video recording device to record the experimental process for subsequent analysis and discussion.

[0103] 3. Ending Stage

[0104] 1. Stop the water flow:

[0105] When the experiment reaches a predetermined time or obvious erosion and deposition phenomena are observed, the stop button of the switch 3221 of the water pump 322 is pressed to stop the water flow.

[0106] Close the lid of the water tank 31 and disconnect the power supply of the water pump 322.

[0107] 2. Disassembly device:

[0108] Carefully remove the riverbed assembly 22 and the adjustment bracket assembly 21 from the transparent box 1 .

[0109] Disconnect the water flow control assembly 32 from the water tank 31 and store all components properly.

[0110] 3. Analyze the experimental results:

[0111] Based on the data and observations recorded during the experiment, the natural processes of river erosion and sedimentation and their geographical impacts are analyzed.

[0112] You can present your experimental results and conclusions in the form of graphs, reports, or presentations.

[0113] In summary, the embodiment of the present application is a middle school geography river erosion and deposition simulation experiment demonstration device, which can accurately control the experimental conditions and truly simulate river erosion and deposition. Students can independently design experiments, adjust parameters and observe results, stimulate learning interest and improve initiative. The device is suitable for a variety of teaching scenarios and provides students with an intuitive and interactive learning experience.

[0114] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0115] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0116] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present application.

Claims

1. A demonstration device for simulating river erosion and sedimentation in middle school geography, characterized in that: It comprises a transparent box (1), a riverbed model device (2) and a water flow control device (3), wherein: The riverbed model device (2) comprises an adjustment support assembly (21) and a plurality of riverbed assemblies (22), wherein: The adjustment bracket assembly (21) is movably arranged in the transparent box (1); A plurality of the riverbed assemblies (22) are hung on one side of the adjustment bracket assembly (21); The water flow control device (3) comprises a water tank (31) and a water flow control component (32), wherein: The water tank (31) is arranged on one side of the transparent box (1); The water flow control component (32) is arranged above the transparent box (1), and the water flow control component (32) is connected to the water tank (31).

2. The middle school geography river erosion and sedimentation simulation experiment demonstration device according to claim 1 is characterized in that: The adjustment bracket assembly (21) comprises a bottom plate (211), a support plate (212), a plurality of grooves (213) and a fixing rod (214), wherein: The bottom plate (211) is arranged inside the transparent box (1); One end of the support plate (212) is hinged to one end of the bottom plate (211); The plurality of grooves (213) are respectively arranged at equal intervals on the bottom plate (211); One end of the fixing rod (214) is movably arranged at the bottom of the supporting plate (212), and the other end is respectively inserted into the plurality of grooves (213).

3. The middle school geography river erosion and sedimentation simulation experiment demonstration device according to claim 2 is characterized in that: The plurality of riverbed components (22) each comprises two hooks (221), a hanging plate (222) and a hanging net (223), wherein: One end of the two hooks (221) is respectively connected to the hanging plate (222), and the two hooks (221) are movably connected to one end of the supporting plate (212); The hanging net (223) is arranged on the hanging plate (222), and sand, gravel, clay, etc. are arranged on the hanging net (223).

4. The middle school geography river erosion and sedimentation simulation experiment demonstration device according to claim 1 is characterized in that: The water flow control assembly (32) comprises a support frame (321), a water pump (322), a pipeline (323), an adjustable valve (324), a flow meter (325) and a water outlet (326), wherein: The support frame (321) is movably arranged on one side of the transparent box (1); The water pump (322) is arranged on the water tank (31); One end of the pipeline (323) is connected to the water tank (31), and the other end is connected to the water pump (322); The adjustable valve (324) is arranged on the top of the support frame (321), and the adjustable valve (324) is connected to the pipeline (323); The flow meter (325) is arranged at the bottom of the support frame (321), and the flow meter (325) is connected to the pipeline (323); The water outlet (326) is arranged at the bottom of the flow meter (325).

5. The middle school geography river erosion and sedimentation simulation experiment demonstration device according to claim 3 is characterized in that: Markers of different colors (such as colored powder, dyed sand) are arranged on the hanging net (223), and when eroded or deposited, the color change can clearly show the boundary of erosion and deposition.

6. The middle school geography river erosion and sedimentation simulation experiment demonstration device according to claim 4 is characterized in that: The water pump (322) is provided with a switch (3221).

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