Digital sand table with terrain teaching demonstration function

Abstract

The invention relates to the technical field of education, and discloses a digital sand table with a terrain teaching demonstration function, which comprises a cabinet body, the upper side of the cabinet body is provided with a projection assembly, the outer side of the cabinet body is connected with a first cabinet door and a second cabinet door through hinges, the inner side of the second cabinet door is provided with a collection drawer, and the collection drawer is connected with the projection assembly. A first square groove is formed in the top of the cabinet body, a plurality of second square grooves are formed in the outer side of the top of the cabinet body at equal intervals, a sand pile is arranged on the inner side of the first square groove, a cleaning mechanism is arranged on the upper side of the cabinet body, a plurality of sand collecting mechanisms are arranged on the inner side of the first square groove at equal intervals, and a screening mechanism is arranged on the inner side of the cabinet body. Through cooperation of the cleaning mechanism and the dust collection mechanism, the problems of hand sand grains and sand grain scattering are solved, and the teaching experience is improved; sand grains are recycled and stored, so that the sand grains are prevented from being polluted, resources are saved and cost is reduced; all the mechanisms work automatically and cooperatively, efficiency is improved, stable operation, collection and disinfection are guaranteed, and health and safety are guaranteed.

Description

Technical Field

[0001] The invention relates to the field of educational technology, in particular to a digital sand table with a terrain teaching demonstration function. Background Art

[0002] The digital sandbox is designed to provide users with an interactive three-dimensional environment for scenario planning, design and decision support. The technologies include geographic information system, computer-aided design, augmented reality and virtual reality technology, which enable users to intuitively display scenes and analyze data in a digital space. It is widely used in urban planning, engineering construction, military exercises, education and training and other fields. The digital sandbox improves the visualization of information and enhances the scientificity and effectiveness of decision-making through real simulation and real-time feedback.

[0003] The digital sandbox uses augmented reality and sensing technology. During teaching, students can freely pile up sand to form any shape, and the projected color and contour lines will change accordingly. Teachers can flexibly shape the terrain according to classroom needs and project contour maps with color changes to facilitate teaching. At the same time, the height and density of the "mountain" can be adjusted in real time to help students understand the different contour graphic changes of the same terrain. In addition, interactive functions such as gestures simulating rain or volcanic eruptions can further stimulate students' interest and participation in learning, making the classroom more attractive and interesting.

[0004] Moving the sandbox during teaching may cause sand to get on your hands and fall onto the ground or clothes, making the ground dirty and difficult to clean. It will also affect the appearance and comfort of clothes and make them more difficult to wash. If the sandbox is not used for a long time or during use, impurities may fall into the sandbox, affecting teaching and causing infection risks for some users. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a digital sand table with a terrain teaching demonstration function, which solves the problem that when the sand table is moved during teaching, sand and gravel may fall, making the ground dirty, clothes damaged and difficult to wash, and impurities may fall when not in use or when in use, affecting teaching and increasing the risk of infection.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A digital sand table with a terrain teaching demonstration function, including a cabinet body, a projection component is arranged on the upper side of the cabinet body, the outer sides of the cabinet body are respectively connected to a first cabinet door and a second cabinet door through hinges, a collection drawer is arranged on the inner side of the second cabinet door, a square groove one is opened at the top of the cabinet body, a plurality of square grooves two are equidistantly opened on the outer side of the top of the cabinet body, a sand pile is arranged inside the square groove one, a cleaning mechanism is arranged on the upper side of the cabinet body, a plurality of sand collection mechanisms are equidistantly arranged inside the square groove one, a sieving mechanism is arranged inside the cabinet body, a disinfection mechanism is arranged inside the cabinet body, a sand suction mechanism is arranged on the inner right wall of the cabinet body, and a dust suction mechanism is equidistantly arranged at the four corners inside the cabinet body;

[0007] The dust suction mechanism includes a collection box, the collection boxes are equidistantly arranged at the four corners inside the cabinet body, a first collection box is arranged inside each collection box, a dust suction pump is arranged on the top of each collection box, the input end of the dust suction pump is connected to the top of the collection box through a pipeline, a second collection box is arranged inside each square groove two, and the output end of the dust suction pump is connected to the bottom of the second collection box through a tee joint.

[0008] Preferably, the cleaning mechanism includes a rotating shaft, the rotating shafts are equidistantly rotatably connected to the top of the cabinet body, and a plurality of soft brushes are equidistantly arranged on the outer part of the rotating shaft.

[0009] Preferably, the sieving mechanism includes a connecting plate, the connecting plates are equidistantly arranged on the inner top wall of the cabinet body, a first frame is arranged between the connecting plates, a sieve mesh is arranged inside the first frame, a U-shaped enclosure is arranged on the top of the first frame, and a vibration motor is arranged on the outer side of the first frame.

[0010] Preferably, the disinfection mechanism includes a second frame, the second frames are arranged between the collection boxes, a conveyor belt is arranged inside the second frame, a railing is arranged on the top of the second frame, and a plurality of ultraviolet lamps are equidistantly arranged on the inner side of the railing.

[0011] Preferably, the sand suction mechanism includes a sand suction pump, the sand suction pump is arranged on the inner right wall of the cabinet body, a square hole is opened at the lower part of the cabinet body, a sand storage box is arranged inside the square hole, the input end of the sand suction pump is connected to the bottom of the sand storage box through a pipeline, the output end of the sand suction pump is connected to a sand spraying port through a pipeline, and the sand spraying port is arranged inside the square groove one.

[0012] Preferably, the sand collection mechanism includes a collection funnel, the collection funnels are equidistantly arranged at the bottom of the square groove one, a discharge pipe is arranged at the lower end of each collection funnel, a motor is arranged on one side of each discharge pipe, a butterfly plate is arranged at the output end of each motor, and the butterfly plates are all arranged inside the discharge pipe.

[0013] Preferably, the projection assembly includes a projector which is arranged on the upper side of the cabinet body, and fixing rods are equidistantly arranged at the four corners of the top of the projector.

[0014] Preferably, the right side of the cabinet body is connected to a scraper through a hook.

[0015] Preferably, the second collection box is arranged between the cleaning mechanisms.

[0016] Preferably, the sieving mechanism is arranged on the upper side of the disinfection mechanism, and the collection drawer is arranged at the lower left side of the sieving mechanism.

[0017] Working principle: First, turn on the projector to project its light onto the sand pile. At this time, teachers or students can perform terrain shaping operations in the sand pile. The projector will project a contour topographic map with or without color changes to assist in the development of teaching activities, enabling students to more intuitively understand terrain-related knowledge. When this teaching session is over, the user can slowly move their hand between the rotating shafts with soft brushes. Meanwhile, the dust suction pump in the dust suction mechanism is started to suck the sand grains that have fallen into the second collection box into the first collection box in the collection tank for subsequent unified processing. When the entire teaching process ends, start the motor, and the motor drives the butterfly plate to rotate. At this time, the sand pile will naturally fall from the collection funnel onto the sieve of the sieving mechanism. Subsequently, the user can take out the scraper hanging on the hook and carefully scrape the sand pile clean. Then, start the vibration motor to drive the first frame to rotate. The sand pile on the sieve will fall onto the conveyor belt under the action of vibration. Meanwhile, the baffle plate with ultraviolet lamps on the second frame will play a role in blocking the sand pile to prevent it from falling into the cabinet body, and the ultraviolet lamps will irradiate the sand pile to play a role in disinfection and sterilization to ensure the hygiene of the sand pile. The impurities on the sieve will be shaken off into the collection drawer during the vibration process and will be processed after the subsequent end. When the ultraviolet lamps irradiate for a period of time to achieve the disinfection effect, start the conveyor belt to transport the disinfected sand pile to the sand storage box for proper storage. When it is needed for the next use, start the sand suction pump, and the sand in the sand storage box will be transported through the pipeline to the sand spraying port and evenly sprayed out through the sand spraying port. Then, use the scraper again to level the sprayed sand pile to facilitate a new round of teaching activities. This ensures the smooth progress of teaching, realizes the recycling and effective treatment of the sand pile, and provides convenience and guarantee for teaching practice.

[0018] The present invention provides a digital sand table with a terrain teaching demonstration function, having the following beneficial effects:

[0019] 1. Through the rotating shaft and soft brush of the cleaning mechanism, the present invention can clean the sand carried on parts such as the back of the hand, preventing it from scattering; the dust suction mechanism can quickly suck the sand carried on parts such as the back of the hand and the sand grains falling from the top of the cabinet into the collection box, avoiding a messy ground, solving the environmental problem caused by the scattering of gravel, improving the teaching experience, reducing potential safety hazards, lowering the cleaning intensity and frequency, saving time and labor costs, providing a clean and comfortable environment for teaching, reflecting the attention paid to cleaning and hygiene in the digital sand table design, and enhancing the overall use value and applicability of the equipment.

[0020] 2. In terms of sand grain recycling and reuse, the collection box two in the square groove two cooperates with the dust suction mechanism to collect sand grains, and the sand suction mechanism transports the sand grains in the sand storage box back to the sand pile area, realizing the centralized collection and recycling of sand grains, saving resources, reducing costs and being more economical and environmentally friendly. In terms of automatic processing, institutions such as sand collection, sieving, and disinfection work together to realize the automatic process of sand pile collection, screening, disinfection and transportation, reducing manual operations, greatly improving work efficiency, enabling teachers and students to focus more on teaching and learning, and at the same time improving the operation stability and reliability of the digital sand table. In terms of disinfection guarantee, the ultraviolet lamp disinfects the sand pile during transportation, providing a healthy and safe sand pile environment for teaching, reducing the threat of germs, reflecting the attention paid to health and safety, and helping to improve the teaching quality and the participation of teachers and students. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the overall three-dimensional view of the present invention;

[0022] Figure 2 is the top view schematic diagram of the present invention;

[0023] Figure 3 is the unfolded schematic diagram of the present invention;

[0024] Figure 4 is the unfolded bottom view schematic diagram of the present invention;

[0025] Figure 5 is the front view cross-sectional schematic diagram of the present invention;

[0026] Figure 6 of the present invention Figure 5 is the enlarged schematic diagram of the dust suction mechanism;

[0027] Figure 7 of the present invention Figure 5 is the enlarged schematic diagram of the sieving mechanism;

[0028] Figure 8 of the present invention Figure 5 is the enlarged schematic diagram of the disinfection mechanism;

[0029] Figure 9 of the present invention Figure 5Enlarged schematic diagram of the sand suction mechanism;

[0030] Figure 10 For the present invention Figure 5 Enlarged schematic diagram of the sand collection mechanism;

[0031] Figure 11 For the present invention Figure 1 Enlarged schematic diagram of the cleaning mechanism.

[0032] Wherein, 1. Cabinet body; 2. First cabinet door; 3. Cleaning mechanism; 301. Rotating shaft; 302. Soft brush; 4. Dust suction mechanism; 401. Collection box; 402. First collection box; 403. Dust suction pump; 404. Second collection box; 5. Sand collection mechanism; 501. Collection funnel; 502. Discharge pipe; 503. Motor; 504. Butterfly plate; 6. Sieving mechanism; 601. First frame; 602. U-shaped enclosing plate; 603. Vibration motor; 604. Connecting plate; 605. Sieve mesh; 7. Disinfection mechanism; 701. Second frame; 702. Conveyor belt; 703. Fence; 704. Ultraviolet lamp; 8. Sand suction mechanism; 801. Sand suction pump; 802. Sand spraying port; 9. Square hole; 10. Projector; 11. Fixed rod; 12. Scraper; 13. Hook; 14. First square groove; 15. Sand pile; 16. Sand storage box; 17. Second cabinet door; 18. Collection drawer; 19. Second square groove. Specific embodiments

[0033] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment:

[0035] Please refer to the attached Figure 1 、attached Figure 2 、attached Figure 3 、attached Figure 4 、attached Figure 5 、attached Figure 6 And attached Figure 11, an embodiment of the present invention provides a digital sand table with a terrain teaching demonstration function, including a cabinet body 1. The cabinet body 1 serves as the basic framework of the entire digital sand table, used for installing and setting other components, providing support and accommodation space for each component, and ensuring the integrity and stability of the entire system. A projection component is arranged on the upper side of the cabinet body 1. The projection component is arranged on the upper side of the cabinet body 1 and is used to irradiate the sand pile 15. By projecting light, it can show the height and dimension of different sand piles 15, as well as the height of the sea level, providing an intuitive visual effect for terrain teaching demonstration and helping students better understand terrain-related concepts and features. The projection component includes a projector 10. The projector 10 is arranged on the upper side of the cabinet body 1. Fixed rods 11 are equidistantly arranged at the four corners of the top of the projector 10. The fixed rods 11 are used to fix the projector 10. The fixed rods 11 are located at the four corners of the top of the projector 10 and are equidistantly arranged. Their main function is to fix the projector 10 and ensure the stable position of the projector 10 during operation;

[0036] The outer sides of the cabinet body 1 are respectively connected to the first cabinet door 2 and the second cabinet door 17 through hinges. The first cabinet door 2 and the second cabinet door 17 are used in cooperation with the hinges, which is convenient for the staff to maintain and process the interior. A collection drawer 18 is arranged on the inner side of the second cabinet door 17 and is used to handle the impurities processed by the sieving mechanism 6. A square groove 14 is opened at the top of the cabinet body 1. It is opened at the top of the cabinet body 1 and is the main area for placing the sand pile 15. It provides a specific space for the sand pile 15, enabling the sand pile 15 to perform terrain shaping and demonstration in this area. Cooperating with other components such as the projection component, it realizes the function of terrain teaching. A plurality of square grooves 19 are equidistantly opened on the outer side of the top of the cabinet body 1. The square grooves 19 provide an installation position for the second collection box 404. The sand pile 15 is arranged on the inner side of the square groove 14. The right side of the cabinet body 1 is connected to a scraper 12 through a hook 13. When it is necessary to level or clean the sand pile 15, the user can conveniently take the scraper 12 and use the scraper 12 to level or scrape the sand pile 15 to meet different teaching demonstration requirements or cleaning requirements;

[0037] A cleaning mechanism 3 is arranged on the upper side of the cabinet body 1. During the cleaning process, the rotation of the rotating shaft 301 can drive the soft brush 302 to rotate, thereby cleaning the surface of the hand and removing sand grains. The cleaning mechanism 3 includes a rotating shaft 301. The rotating shaft 301 is equidistantly and rotatably connected to the top of the cabinet body 1. The rotation of the rotating shaft 301 can drive the soft brush 302 to rotate. A plurality of soft brushes 302 are equidistantly arranged on the outside of the rotating shaft 301. The soft brushes 302 are used to clean the sand grains on the hand;

[0038] At the four corners inside the cabinet body 1, dust suction mechanisms 4 are equidistantly arranged. The dust suction mechanism 4 includes a collection box 401, which is connected to a second collection box 404 through a dust suction pump 403. It can suck substances such as sand grains in the second collection box 404 into a first collection box 402 inside the collection box 401, realizing the centralized collection and storage of sand grains, providing convenience for subsequent processing. The collection boxes 401 are equidistantly arranged at the four corners inside the cabinet body 1. Inside the collection boxes 401, first collection boxes 402 are arranged on the inner sides, which are used to store substances such as sand grains inhaled from the second collection box 404. At the tops of the collection boxes 401, dust suction pumps 403 are arranged. The function of the dust suction pump 403 is to generate suction force to suck the sand grains that have fallen into the second collection box 404 into the first collection box 402 in the collection box 401. The input ends of the dust suction pumps 403 are all connected to the tops of the collection boxes 401 through pipelines. On the inner sides of the second square grooves 19, second collection boxes 404 are arranged. The output ends of the dust suction pumps 403 are all connected to the bottoms of the second collection boxes 404 through three-way joints.

[0039] Please refer to the attached Figure 1 、attached Figure 2 、attached Figure 5 、attached Figure 7 、attached Figure 8 、attached Figure 9 And attached Figure 10 In the inner side of the first square groove 14, a plurality of sand collection mechanisms 5 are equidistantly arranged. The sand collection mechanism 5 includes a collection funnel 501, which plays a role in centralized collection of sand grains, providing convenience for subsequent transportation and processing. The collection funnels 501 are equidistantly arranged at the bottom of the first square groove 14. At the lower ends of the collection funnels 501, discharge pipes 502 are arranged. The discharge pipes 502 are connected to the lower ends of the collection funnels 501 and are the channels for sand grain discharge. After the sand grains are collected by the collection funnels 501, they are transported through the discharge pipes 502, guiding the sand grains to subsequent processing links. On one side of each discharge pipe 502, a motor 503 is arranged. At the output ends of the motors 503, butterfly plates 504 are arranged. The operation of the motors 503 controls the opening and closing of the butterfly plates 504, thereby realizing the control of sand grain discharge, ensuring that the sand grains can be discharged as needed, and guaranteeing the orderly progress of the entire sand collection process. And the butterfly plates 504 are all arranged inside the discharge pipes 502. The main function of the butterfly plates 504 is to control the on-off of the discharge pipes 502. When it is necessary to discharge sand grains, the motor 503 drives the butterfly plate 504 to rotate and open the discharge pipe 502, enabling the sand grains to pass through smoothly; when it is not necessary to discharge, the butterfly plate 504 closes the discharge pipe 502 to prevent the sand grains from flowing, realizing the control of sand grain discharge;

[0040] An inside of the cabinet body 1 is provided with a sieving mechanism 6. The sieving mechanism 6 includes a connecting plate 604. The connecting plates 604 are equidistantly arranged on the inner top wall of the cabinet body 1. The connecting plate 604 provides a stable installation position for the first frame 601, enabling the first frame 601 to be firmly fixed inside the cabinet body 1, ensuring the stability and reliability of the sieving mechanism 6 during operation. A first frame 601 is arranged between the connecting plates 604. The first frame 601 provides a structure for fixing and supporting the sieve mesh 605, enabling the sieve mesh 605 to perform the screening work of sand grains under the support of the first frame 601. The sieve mesh 605 is arranged inside the first frame 601. The sieve mesh 605 can screen out impurities in the sand grains, such as larger particles, sundries, etc. A U-shaped enclosing plate 602 is arranged on the top of the first frame 601. The U-shaped enclosing plate 602 is used to prevent the sand pile 15 from falling outside the first frame 601. A vibration motor 603 is arranged on the outside of the first frame 601. The vibration motor 603 provides the source of vibration;

[0041] An inside of the cabinet body 1 is provided with a disinfection mechanism 7. The disinfection mechanism 7 includes a second frame 701. The second frames 701 are all arranged between the collection boxes 401. A conveyor belt 702 is arranged inside the second frame 701. A railing 703 is arranged on the top of the second frame 701. The second frame 701 enables the conveyor belt 702 and the railing 703 to form a relatively independent space inside the cabinet body 1, ensuring the effective progress of the disinfection work and also providing a basis for the installation of the ultraviolet lamps 704. The conveyor belt 702 can transport the sand grains from the sieving mechanism 6 to the sand storage box 16, realizing the automatic transportation of the sand grains. The railing 703 blocks the sand pile 15, preventing the sand grains from falling into the cabinet body 1 during transportation. The railing 703 provides a boundary limit for the transportation of the sand grains. A plurality of ultraviolet lamps 704 are equidistantly arranged on the inside of the railing 703. The ultraviolet lamps 704 irradiate the sand pile 15, using the bactericidal effect of ultraviolet rays to kill microorganisms such as bacteria and viruses in the sand pile 15, ensuring the hygienic safety of the sand pile 15 and providing a healthy and safe sand pile environment for the next teaching demonstration;

[0042] An inner right wall of the cabinet body 1 is provided with a sand suction mechanism 8. The sand suction mechanism 8 includes a sand suction pump 801. The sand suction pump 801 is arranged on the inner right wall of the cabinet body 1. The main function of the sand suction pump 801 is to extract sand grains from the sand storage box 16 and transport them to the sand blasting port 802 through a pipeline. It provides power for the reuse of sand grains, enabling the sand grains to be transported from the sand storage box 16 to the required positions, realizing the recycling of sand grains. A square hole 9 is opened in the lower part of the cabinet body 1. The square hole 9 is used to place the sand storage box 16. The sand storage box 16 is arranged inside the square hole 9. The sand storage box 16 provides a temporary storage space for sand grains. When sand grains are needed for teaching demonstrations, the sand suction pump 801 can extract sand grains from the sand storage box 16, ensuring the ready availability of sand grains. At the same time, it is also convenient for centralized management and maintenance of sand grains. The input end of the sand suction pump 801 is connected to the bottom of the sand storage box 16 through a pipeline, and the output end of the sand suction pump 801 is connected to the sand blasting port 802 through a pipeline. The sand blasting port 802 is arranged inside the first square groove 14. The sand blasting port 802 is arranged inside the first square groove 14 and is the outlet for sand grains to be ejected.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A digital sand table with terrain teaching demonstration function, comprising a cabinet (1), characterized in that: A projection assembly is arranged on the upper side of the cabinet (1); the outer side of the cabinet (1) is connected to a cabinet door 1 (2) and a cabinet door 2 (17) through hinges; a collection drawer (18) is arranged on the inner side of the cabinet door 2 (17); a square groove 1 (14) is arranged on the top of the cabinet (1); a plurality of square grooves 2 (19) are arranged at equal intervals on the outer side of the top of the cabinet (1); a sand pile (15) is arranged on the inner side of the square groove 1 (14); a cleaning mechanism (3) is arranged on the upper side of the cabinet (1); a plurality of sand collecting mechanisms (5) are arranged at equal intervals on the inner side of the square groove 1 (14); a screening mechanism (6) is arranged on the inner side of the cabinet (1); a disinfection mechanism (7) is arranged on the inner side of the cabinet (1); a sand suction mechanism (8) is arranged on the inner right wall of the cabinet (1); and dust suction mechanisms (4) are arranged at equal intervals at the four inner corners of the cabinet (1); The dust collection mechanism (4) comprises a collection box (401), the collection box (401) being equidistantly arranged at the four corners inside the cabinet (1), the inner side of the collection box (401) being provided with a collection box 1 (402), the top of the collection box (401) being provided with a dust collection pump (403), the input end of the dust collection pump (403) being connected to the top of the collection box (401) through a pipeline, the inner side of the square groove 2 (19) being provided with a collection box 2 (404), the output end of the dust collection pump (403) being connected to the bottom of the collection box 2 (404) through a tee.

2. A digital sand table with terrain teaching demonstration function according to claim 1, characterized in that: The cleaning mechanism (3) comprises a rotating shaft (301), the rotating shaft (301) being rotatably connected to the top of the cabinet (1) at equal distances, and a plurality of soft brushes (302) being arranged at equal distances outside the rotating shaft (301).

3. A digital sand table with terrain teaching demonstration function according to claim 1, characterized in that: The screening mechanism (6) comprises connecting plates (604), the connecting plates (604) being arranged at equal distances on the inner top wall of the cabinet (1), a frame (601) being arranged between the connecting plates (604), a screen (605) being arranged on the inner side of the frame (601), a U-shaped enclosure (602) being arranged on the top of the frame (601), and a vibration motor (603) being arranged on the outer side of the frame (601).

4. The digital sand table with terrain teaching demonstration function according to claim 1 is characterized in that: The disinfection mechanism (7) comprises a second frame (701), wherein the second frame (701) is arranged between the collection boxes (401), a conveyor belt (702) is arranged on the inner side of the second frame (701), a guardrail (703) is arranged on the top of the second frame (701), and a plurality of ultraviolet lamps (704) are arranged at equal intervals on the inner side of the guardrail (703).

5. The digital sand table with terrain teaching demonstration function according to claim 1 is characterized in that: The sand suction mechanism (8) comprises a sand suction pump (801), which is arranged on the inner right wall of the cabinet (1); a square hole (9) is opened at the lower part of the cabinet (1); a sand storage box (16) is arranged inside the square hole (9); an input end of the sand suction pump (801) is connected to the bottom of the sand storage box (16) through a pipeline; an output end of the sand suction pump (801) is connected to a sand blasting port (802) through a pipeline; and the sand blasting port (802) is arranged inside the square groove (14).

6. The digital sand table with terrain teaching demonstration function according to claim 1 is characterized in that: The sand collecting mechanism (5) comprises a collecting funnel (501), the collecting funnel (501) being equidistantly arranged at the bottom of the square groove (14), a discharge pipe (502) being arranged at the lower end of each collecting funnel (501), a motor (503) being arranged at one side of each discharge pipe (502), a butterfly plate (504) being arranged at the output end of each motor (503), and the butterfly plate (504) being arranged at the inner side of each discharge pipe (502).

7. The digital sand table with terrain teaching demonstration function according to claim 1 is characterized in that: The projection assembly comprises a projector (10), wherein the projector (10) is arranged on the upper side of the cabinet (1), and fixing rods (11) are equidistantly arranged at the four corners of the top of the projector (10).

8. The digital sand table with terrain teaching demonstration function according to claim 1 is characterized in that: The right side of the cabinet (1) is connected to the scraper (12) via a hook (13).

9. The digital sand table with terrain teaching demonstration function according to claim 1 is characterized in that: The second collecting box (404) is arranged between the cleaning mechanisms (3).

10. The digital sand table with terrain teaching demonstration function according to claim 1, characterized in that: The screening mechanism (6) is arranged on the upper side of the disinfection mechanism (7), and the collecting drawer (18) is arranged on the lower left side of the screening mechanism (6).

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