Small wind tunnel for testing wind erosion equipment

Abstract

The utility model discloses a small wind tunnel for testing wind erosion equipment, which comprises an experimental section, a stable section and a fan section, a contraction section is fixedly mounted between the experimental section and the stable section, a rectification section and a protection section are fixedly mounted between the experimental section and the fan section, and a honeycomb and a sand conveying mechanism are fixedly mounted in the stable section. A fan is fixedly installed in the fan section, a gauze element is fixedly installed in the protection section, a collecting mechanism capable of collecting gravel is installed at the bottom of the protection section, and a limiting mechanism capable of limiting the collecting mechanism is installed on the side face of the protection section. And the fan blades can be protected, gravels blocked by the gauze can be fed into the collecting box, centralized treatment of the gravels is achieved, and workers can clean a wind tunnel conveniently. In addition, when the collecting box is fully loaded, the system can automatically trigger an alarm to remind a worker to clean the collecting box in time, and gravel overflow caused by the fact that the collecting box is not treated in time is avoided.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment technology, specifically a small wind tunnel for testing wind erosion equipment. Background Technology

[0002] Soil wind erosion is the primary factor contributing to desertification in arid, semi-arid, and some semi-humid regions. Severe soil wind erosion not only leads to coarser soil texture, structural damage, and decreased fertility, reducing sustainable productivity, but also triggers weather phenomena such as sandstorms and dust storms, polluting the air, water, and ecological environment, damaging transportation, communication, and building infrastructure, and ultimately impacting human production and health. Wind tunnels, used for testing wind erosion equipment, are primarily used to simulate natural wind fields and storm conditions. Through wind erosion measurement research, they provide a scientific basis for soil wind erosion prevention and control, and are an important experimental tool in related fields.

[0003] In practical use, it was found that air-intake wind tunnels cause sand and gravel to move towards the fan along with the airflow. This sand and gravel continuously impacts the fan blades, causing damage. Although some wind tunnels have filters installed on the side of the fan, sand and gravel still accumulate inside. After the experiment, staff need to spend a significant amount of time cleaning, which greatly affects experimental efficiency.

[0004] Therefore, this invention provides a small wind tunnel for testing wind erosion equipment to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a small wind tunnel for testing wind erosion equipment, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A small wind tunnel for testing wind erosion equipment includes an experimental section, a stabilizing section, and a fan section. A contraction section is fixedly installed between the experimental section and the stabilizing section. A rectifier section and a protective section are fixedly installed between the experimental section and the fan section. A honeycomb device and a sand conveying mechanism are fixedly installed inside the stabilizing section. A fan is fixedly installed inside the fan section. A mesh screen is fixedly installed inside the protective section. A collection mechanism for collecting sand and gravel is installed at the bottom of the protective section. A limiting mechanism for limiting the collection mechanism is installed on the side of the protective section.

[0008] As a further embodiment of this utility model, the sand conveying mechanism includes a feed pipe, which is fixedly installed on the top of the stabilizing section. A feed hopper is fixedly installed on the top of the feed pipe. A first rotating rod is rotatably installed inside the feed hopper, and a lever is fixedly installed on the outside of the first rotating rod.

[0009] As a further embodiment of this utility model, the collection mechanism includes a collection box, which is installed at the bottom of the protective section. A limit rod is fixedly installed inside the collection box, and a placement plate is slidably connected to the outside of the limit rod.

[0010] As a further embodiment of this utility model, a fixed tube is fixedly installed inside the collection box, a movable tube is fixedly installed at the bottom of the placement plate, a display frame is fixedly installed on the outside of the collection box, a connecting cavity is opened at the bottom of the collection box and inside the display frame, and a lifting plate is movably installed inside the connecting cavity.

[0011] As a further embodiment of this utility model, the limiting mechanism includes a fixing frame, which is fixedly installed on the side of the protective section. A connecting groove is provided at the bottom of the fixing frame. A connecting frame is fixedly installed on the side of the collection box, and a connecting plate adapted to the connecting groove is fixedly installed on the top of the connecting frame.

[0012] As a further embodiment of this utility model, a movable plate is movably installed inside the fixed frame, a card plate is fixedly installed on the side of the movable plate, and a card slot adapted to the card plate is opened on the side of the connecting plate.

[0013] As a further embodiment of this utility model, a placement groove is provided between the experimental section and the contraction section, and a rubber ring is installed inside the placement groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In use, this utility model, through the synergistic action of the mesh and the collection mechanism, not only protects the fan blades but also sends the sand and gravel blocked by the mesh into the collection box, achieving centralized processing of the sand and gravel and facilitating cleaning of the wind tunnel by staff. Furthermore, through the linkage between the collection box and the internal components of the display frame, staff can quickly monitor the amount of sand and gravel in the collection box; when the collection box is full, the system automatically triggers an alarm to remind staff to clean it promptly, preventing sand and gravel overflow due to delayed processing.

[0016] 2. When using this utility model, the limiting mechanism allows workers to quickly assemble and disassemble the collection box without tools, making it more efficient than traditional bolt fixing methods. At the same time, cleaning the sand and gravel inside the collection box is also more convenient, improving the efficiency of wind tunnel maintenance.

[0017] 3. In use, this utility model achieves miniaturization and integrated design of the wind tunnel by modularly combining the experimental section, contraction section, stabilization section, rectification section, protection section, and fan section, facilitating installation and maintenance. The components are connected by flanges, and placement grooves and rubber rings are provided at the connections, significantly enhancing sealing and ensuring airflow stability, thereby guaranteeing the reliability of experimental data. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a small wind tunnel used for testing wind erosion equipment.

[0019] Figure 2 This is a cross-sectional view of the overall structure of a small wind tunnel used for testing wind erosion equipment.

[0020] Figure 3 This is a schematic cross-sectional view of the stable section in a small wind tunnel used for testing wind erosion equipment.

[0021] Figure 4 This is a schematic diagram of the structure of a protective section in a small wind tunnel used for testing wind erosion equipment.

[0022] Figure 5 This is a schematic cross-sectional view of a collection box in a small wind tunnel used for testing wind erosion equipment.

[0023] Figure 6 This is a schematic cross-sectional view of the mounting frame and connecting frame in a small wind tunnel used for testing wind erosion equipment.

[0024] Figure 7 A small wind tunnel for testing wind erosion equipment. Figure 2 Enlarged view of point A in the middle.

[0025] Figure 8 A small wind tunnel for testing wind erosion equipment. Figure 3 Enlarged view of point B in the middle.

[0026] In the diagram: 1. Experimental section; 2. Contraction section; 3. Stabilization section; 4. Rectification section; 5. Protection section; 6. Fan section; 7. Honeycomb unit; 8. Sand conveying mechanism; 801. Feed pipe; 802. Feed hopper; 803. First rotating rod; 804. Paddle plate; 805. Drive motor; 9. Fan; 10. Mesh screen; 11. Collection mechanism; 1101. Collection box; 1102. Limiting rod; 1103. Placement plate; 1104. Spring; 1105. Fixed tube; 1106. Movable tube; 1107. Display. Frame; 1108, connecting cavity; 1109, lifting plate; 1110, observation window; 1111, button; 1112, alarm; 12, limit mechanism; 1201, fixed frame; 1202, connecting frame; 1203, connecting groove; 1204, connecting plate; 1205, second rotating rod; 1206, gear; 1207, toothed rod; 1208, movable plate; 1209, clamping plate; 1210, clamping groove; 1211, sliding groove; 1212, guide rod; 13, placement groove; 14, rubber ring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1 to 8 In this embodiment of the invention, a small wind tunnel for testing wind erosion equipment includes an experimental section 1, a stabilizing section 3, and a fan section 6. The experimental section 1 adopts a straight pipe structure. A contraction section 2 is fixedly installed between the experimental section 1 and the stabilizing section 3. A rectifier section 4 and a protective section 5 are fixedly installed between the experimental section 1 and the fan section 6. Both the contraction section 2 and the rectifier section 4 adopt a contraction pipe structure. The rectifier section 4 is installed between the experimental section 1 and the protective section 5, and the protective section 5 is installed between the rectifier section 4 and the fan section 6. A honeycomb device 7 and a sand conveying mechanism 8 are fixedly installed inside the stabilizing section 3. Specifically, the sand conveying mechanism 8 can... To better simulate wind erosion, sand and gravel are transported into the wind tunnel. A fan 9 is fixedly installed inside the fan section 6, and a mesh 10 is fixedly installed inside the protective section 5. The mesh 10 can block the sand and gravel and prevent them from hitting the blades of the fan 9. A collection mechanism 11 is installed at the bottom of the protective section 5 to collect the sand and gravel so that the staff can clean the wind tunnel. A limiting mechanism 12 is installed on the side of the protective section 5 to limit the collection mechanism 11. The limiting mechanism 12 can facilitate the staff to install and remove the collection mechanism 11.

[0029] Please see Figure 2 , Figure 3 and Figure 8 The sand conveying mechanism 8 includes a feed pipe 801, which is fixedly installed on the top of the stabilizing section 3. A feed hopper 802 is fixedly installed on the top of the feed pipe 801. A first rotating rod 803 is rotatably installed inside the feed hopper 802. A lever 804 is fixedly installed on the outside of the first rotating rod 803. A drive motor 805 for driving the first rotating rod 803 to rotate is fixedly installed on the side of the feed hopper 802.

[0030] Specifically, the drive motor 805 can drive the first rotating rod 803 and the deflector plate 804 to rotate, causing the sand and gravel in the feed hopper 802 to move. This design can not only break up clumps of sand and gravel, but also effectively prevent sand and gravel from clogging the feed hopper 802, ensuring the continuous operation of the sand conveying mechanism 8.

[0031] Please see Figure 4 and Figure 5 The collection mechanism 11 includes a collection box 1101, which is installed at the bottom of the protective section 5. A limit rod 1102 is fixedly installed inside the collection box 1101, and a placement plate 1103 is slidably connected to the outside of the limit rod 1102. A spring 1104 is installed between the collection box 1101 and the placement plate 1103.

[0032] Specifically, the collection box 1101 is used for centralized processing of gravel. The placement plate 1103 inside can slide along the outside of the limiting rod 1102. The placement plate 1103 can move stably through the guiding action of the limiting rod 1102, so as to avoid falling out and ensure the controllability of gravel discharge.

[0033] Please see Figure 5 A fixed tube 1105 is fixedly installed inside the collection box 1101. A movable tube 1106 is fixedly installed at the bottom of the placement plate 1103. The movable tube 1106 is movably installed inside the fixed tube 1105. A display frame 1107 is fixedly installed on the outside of the collection box 1101. A connecting cavity 1108 is opened at the bottom of the collection box 1101 and inside the display frame 1107. Silicone oil is provided inside the connecting cavity 1108. A lifting plate 1109 is movably installed inside the connecting cavity 1108. An observation window 1110 is provided on the side of the display frame 1107. A button 1111 is installed on the top of the inner wall of the display frame 1107. An alarm 1112 is fixedly installed on the top of the display frame 1107. The button 1111 is electrically connected to the alarm 1112.

[0034] Specifically, when the placement plate 1103 moves, it drives the movable tube 1106 to move synchronously inside the fixed tube 1105, thereby causing the silicone oil in the connecting cavity 1108 to flow. The movement of the silicone oil will cause the lifting plate 1109 to change position, and the current gravel content can be visually displayed through the observation window 1110. In addition, when the lifting plate 1109 moves to the top of the display rack 1107, the button 1111 will be pressed to trigger the alarm 1112, reminding staff to clean the gravel in the collection box 1101.

[0035] Please see Figure 5 and Figure 6 The limiting mechanism 12 includes a fixing frame 1201, which is fixedly installed on the side of the protective section 5. A connecting groove 1203 is provided at the bottom of the fixing frame 1201. A connecting frame 1202 is fixedly installed on the side of the collection box 1101. A connecting plate 1204 that is compatible with the connecting groove 1203 is fixedly installed on the top of the connecting frame 1202.

[0036] Specifically, by inserting the connecting plate 1204 of the connecting frame 1202 into the connecting groove 1203 of the fixing frame 1201, the fixing frame 1201 and the connecting frame 1202 can be connected together, thereby placing the collecting mechanism 11 at the bottom of the protective section 5.

[0037] Please see Figure 6 The fixed frame 1201 has a movable plate 1208 inside, and a clamping plate 1209 is fixedly installed on the side of the movable plate 1208. The side of the connecting plate 1204 has a groove 1210 that matches the clamping plate 1209. The fixed frame 1201 has a second rotating rod 1205 rotatably installed inside, and a knob is fixedly connected to the outside of the second rotating rod 1205. A gear 1206 is fixedly installed on the surface of the second rotating rod 1205. A toothed rod 1207 meshes with the outside of the gear 1206. The movable plate 1208 is fixedly connected to the side of the toothed rod 1207. The inner wall of the fixed frame 1201 has a sliding groove 1211. A guide rod 1212 is fixedly installed inside the sliding groove 1211. The movable plate 1208 is slidably connected to the outside of the guide rod 1212.

[0038] Specifically, rotating the knob drives the second rotating rod 1205 and the gear 1206 to rotate in tandem. The gear 1206 meshes with the toothed rod 1207, causing the toothed rod 1207 to push the movable plate 1208 to move. The movement of the movable plate 1208 causes the locking plate 1209 to slide along the outside of the guide rod 1212 of the slide groove 1211, and to approach or move away from the locking groove 1210, thereby locking or unlocking the locking plate 1209. In addition, the mating structure of the slide groove 1211 and the guide rod 1212 provides guidance and limiting functions for the movable plate 1208, ensuring movement stability.

[0039] Please see Figure 2 and Figure 7 A placement groove 13 is provided between the experimental section 1 and the contraction section 2. Placement grooves 13 are also provided between the contraction section 2 and the stabilization section 3, the experimental section 1 and the rectifier section 4, the rectifier section 4 and the protection section 5, and the protection section 5 and the fan section 6. A rubber ring 14 is installed inside the placement groove 13. The rubber ring 14 is made of fluororubber material.

[0040] Specifically, the components are connected by flanges, and a placement groove 13 and a rubber ring 14 are provided at the connection, which significantly enhances the sealing performance, ensures airflow stability, and thus guarantees the reliability of experimental data. Moreover, the rubber ring 14, made of fluororubber, is suitable for environments where corrosive gases or liquids are present, such as wind tunnels simulating sandstorms or salt sprays. It can maintain sealing performance in harsh chemical environments and is suitable for wind tunnels under special operating conditions.

[0041] The working principle of this utility model is as follows: The experimental section 1, contraction section 2, stabilization section 3, rectification section 4, protection section 5, and fan section 6 are modularly combined using flanges. A placement groove 13 and a rubber ring 14 are provided at the connection points. The interference fit of the rubber ring 14 significantly improves the sealing performance, ensuring airflow stability. The driving fan 9 draws outside air into the wind tunnel for wind erosion equipment testing. During testing, gravel is fed into the wind tunnel through the sand conveying mechanism 8. The driving motor 805 drives the first rotating rod 803 and the deflector plate 804 to rotate, causing the gravel in the feed hopper 802 to move. This design not only breaks up clumps of gravel but also effectively prevents gravel from clogging the feed hopper 802. After passing through the experimental section 1, the gravel is blocked by the mesh 10 in the protection section 5 and falls onto the placement plate 1103 of the collection box 1101.

[0042] When the placement plate 1103 moves, it drives the movable tube 1106 to move synchronously inside the fixed tube 1105, thereby promoting the flow of silicone oil in the connecting cavity 1108. The silicone oil drives the lifting plate 1109 to change position, and the amount of sand and gravel in the collection box 1101 is displayed in real time through the observation window 1110, making it easy for staff to quickly grasp the inventory. When the lifting plate 1109 moves to the top of the display frame 1107, the trigger button 1111 activates the alarm 1112, reminding the staff to clean the full sand and gravel in the collection box 1101 to prevent overflow and contamination of the experimental environment.

[0043] When disassembling and assembling the collection box 1101, rotating the knob drives the second rotating rod 1205 and the gear 1206 to rotate in tandem. The gear 1206 meshes with the toothed rod 1207, pushing the movable plate 1208 to move. The movable plate 1208 drives the locking plate 1209 to slide along the outside of the guide rod 1212 of the slide groove 1211 and disengage from the locking groove 1210, thereby unlocking the fixed frame 1201 from the connecting frame 1202. The collection box 1101 can be disassembled efficiently without tools, which significantly improves the disassembly and assembly efficiency compared to the traditional bolt fixing method.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A small wind tunnel for testing wind erosion equipment, comprising an experimental section (1), a stabilization section (3), and a fan section (6), characterized in that, A contraction section (2) is fixedly installed between the experimental section (1) and the stabilization section (3). A rectification section (4) and a protection section (5) are fixedly installed between the experimental section (1) and the fan section (6). A honeycomb device (7) and a sand conveying mechanism (8) are fixedly installed inside the stabilization section (3). A fan (9) is fixedly installed inside the fan section (6). A mesh screen (10) is fixedly installed inside the protection section (5). A collection mechanism (11) capable of collecting gravel is installed at the bottom of the protection section (5). A limiting mechanism (12) capable of limiting the collection mechanism (11) is installed on the side of the protection section (5).

2. A small wind tunnel for testing wind erosion equipment according to claim 1, characterized in that, The sand conveying mechanism (8) includes a feed pipe (801), which is fixedly installed on the top of the stabilizing section (3). A feed hopper (802) is fixedly installed on the top of the feed pipe (801). A first rotating rod (803) is rotatably installed inside the feed hopper (802), and a lever (804) is fixedly installed on the outside of the first rotating rod (803).

3. A small wind tunnel for testing wind erosion equipment according to claim 1, characterized in that, The collection mechanism (11) includes a collection box (1101), which is installed at the bottom of the protective section (5). A limit rod (1102) is fixedly installed inside the collection box (1101), and a placement plate (1103) is slidably connected to the outside of the limit rod (1102).

4. A small wind tunnel for testing wind erosion equipment according to claim 3, characterized in that, A fixed tube (1105) is fixedly installed inside the collection box (1101), a movable tube (1106) is fixedly installed at the bottom of the placement plate (1103), a display frame (1107) is fixedly installed on the outside of the collection box (1101), a connecting cavity (1108) is opened at the bottom of the collection box (1101) and inside the display frame (1107), and a lifting plate (1109) is movably installed inside the connecting cavity (1108).

5. A small wind tunnel for testing wind erosion equipment according to claim 3, characterized in that, The limiting mechanism (12) includes a fixing frame (1201), which is fixedly installed on the side of the protective section (5). The bottom of the fixing frame (1201) is provided with a connecting groove (1203). A connecting frame (1202) is fixedly installed on the side of the collection box (1101). A connecting plate (1204) that is compatible with the connecting groove (1203) is fixedly installed on the top of the connecting frame (1202).

6. A small wind tunnel for testing wind erosion equipment according to claim 5, characterized in that, The fixed frame (1201) has a movable plate (1208) installed inside, and a card plate (1209) is fixedly installed on the side of the movable plate (1208). The side of the connecting plate (1204) has a card slot (1210) that is compatible with the card plate (1209).

7. A small wind tunnel for testing wind erosion equipment according to claim 1, characterized in that, A placement groove (13) is provided between the experimental section (1) and the contraction section (2), and a rubber ring (14) is installed inside the placement groove (13).

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