A sandstorm simulation generator

Abstract

The present invention relates to a sandstorm simulation generator, which includes a sand hopper with a hinged small door fixed on a support I, an adjustable sand amount device placed at the bottom of the sand hopper, and a box structure placed below the adjustable sand amount device. An internally detachable screen is provided in the upper middle part of the sand hopper; the adjustable sand amount device includes a support II, a handle, and a sand amount control slide plate; a rotating shaft is provided in the middle of the support II, and one end of the rotating shaft is connected to the handle; sliding sleeves are respectively provided on both sides of the top of the support II, and a sand amount control slide plate is horizontally placed in the sliding sleeves; a pair of rotating rollers are symmetrically provided on both sides of the rotating shaft, and the rotating rollers are in contact with the sand amount control slide plate; sliding holes are provided on both sides of the sand amount control slide plate, and the sliding holes are connected to the sliding sleeves; multiple rows of different forms of sand leakage holes or sand leakage grooves are provided on the sand amount control slide plate. The present invention is simple to operate and accurate in testing, and can meet the test requirements of various sand dust tests and anti-wind sand stress tests.

Description

Technical Field

[0001] The present invention relates to the technical field of ecological environment equipment manufacturing, and particularly to a sandstorm simulation generator. Background Art

[0002] A sandstorm refers to a severe wind-sand weather environment in which strong winds blow a large amount of dust on the ground into the air, making the air very turbid and visibility very low. Sandstorms can cause damage to buildings and casualties to humans and livestock through strong winds carrying fine sand and dust. They can also invade farmland, channels, railways, grasslands, etc. in the form of sandstorm flows carrying a large amount of sand particles, causing them to be buried by a large amount of quicksand. When a sandstorm occurs, the sand and dust wrapped in the strong wind are everywhere. The air in the areas where the sand and dust pass through is turbid, irritating the nose and eyes, and causing frequent respiratory diseases. Especially in the sandstorm source areas and the areas affected by sand and dust, the inhalable particulate matter (TSP) in the atmosphere increases, and the ecological environment deteriorates. In addition to extreme weather phenomena such as sandstorms, weather phenomena such as haze, blowing sand, floating dust, and smoke are all caused by a large number of extremely fine dust particles or smoke particles floating in the air, resulting in a reduction in effective horizontal visibility, an increase in air pollution, and a deterioration of the human living environment, which have a serious impact on both production and life.

[0003] Currently, the research on sandstorms and sand and dust mainly focuses on the meteorological perspective and large scales. By monitoring the occurrence and development process of sandstorms, the migration paths and influence ranges are studied. There is less research on small scales, only involving the research level of the sand and dust generation mechanism. With the development of technology, it is also possible to simulate sandstorm flows in a wind tunnel. The main method used is to cover the bottom of the wind tunnel with sand. Although this method can generate sandstorm flows, it cannot accurately simulate sand and dust, especially the sandstorm environment. Another main method is to simulate sandstorms by leaking sand from top to bottom. This method can generate sandstorm flows, but due to the inability to control the sand leakage amount, the generated sandstorm flows are all saturated sandstorm flows, and it is even more impossible to simulate different levels of sandstorms, especially the floating dust environment. Moreover, only one-dimensional wind speed can be generated in the wind tunnel, and the sand and dust disperse in the downwind direction in a timely manner and cannot stay in the tunnel body for a long time. Therefore, how to accurately control the simulation of different levels of sandstorms and the simulation of the sand and dust environment, especially the floating dust environment, to form a near-natural sand and dust environment is a difficult point in the current research on sand and dust environment and sand and dust disaster prevention. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a sandstorm simulation generator with simple operation and accurate testing.

[0005] To solve the above problems, a sandstorm simulation generator according to the present invention is characterized in that: the generator includes a sand hopper with a hinged small door fixed on a support I, an adjustable sand amount device placed at the bottom of the sand hopper, and a box structure placed below the adjustable sand amount device; an internally placed detachable screen is provided in the upper middle part of the sand hopper; the adjustable sand amount device includes a support II, a handle, and a sand amount control slide plate; a rotating shaft is provided in the middle of the support II, and one end of the rotating shaft is connected to the handle; sliding sleeves are respectively provided on both sides of the top of the support II, and the sand amount control slide plate is horizontally placed in the sliding sleeves; a pair of rotating rollers are symmetrically provided on both sides of the rotating shaft, and the rotating rollers are in contact with the sand amount control slide plate; sliding holes are provided on both sides of the sand amount control slide plate, and the sliding holes are connected to the sliding sleeves; multiple rows of sand leakage holes or sand leakage grooves of different forms are provided on the sand amount control slide plate.

[0006] The internally placed detachable screen is inclined and connected to the sand hopper through a buckle.

[0007] The sand hopper on the bottom side of the bottom edge of the internally placed detachable screen is provided with the hinged small door.

[0008] The internally placed detachable screen is a set of screens with different pore sizes.

[0009] The sand amount control slide plate is multiple sets of rectangular steel plates with different pore sizes or sand leakage amounts.

[0010] The width of each row of sand leakage holes or sand leakage grooves of different forms is equal to the width of the bottom of the sand hopper.

[0011] Raised edges are provided on the edges of each row of sand leakage holes or sand leakage grooves of different forms.

[0012] The sliding sleeves are fixed on the support II through bolts.

[0013] Threads I are provided on the rotating rollers, and the threads I are matched with the threads II provided at the bottom of the sand amount control slide plate.

[0014] The present invention has the following advantages compared with the prior art:

[0015] 1. An internally placed detachable screen is provided in the upper middle part of the sand hopper of the present invention. Therefore, the injected sand grains can be separated first according to the particle size of the sand and dust.

[0016] 2. A sand amount control slide plate is provided in the present invention, and multiple rows of sand leakage holes or sand leakage grooves of different forms are provided on the sand amount control slide plate. Therefore, the sand amount control slide plate can be horizontally moved by rotating the handle, and various sand leakage forms such as sand leakage holes or sand leakage grooves that meet the test requirements can be selected at any time, so as to achieve the purpose of accurately controlling the sand leakage amount.

[0017] 3. In the present invention, a sand quantity control slide plate is horizontally placed inside the sliding sleeve. This sand quantity control slide plate is in contact with the rotating roller. Therefore, the orientation, angle, sand flow rate, etc. of the sand leakage point can be flexibly adjusted, so as to simulate sandstorms of different levels in a near-natural state. At the same time, it can also simulate sand dust, floating dust or haze environments.

[0018] 4. The present invention is simple to operate, convenient for experiments, and has a wide range of applications. It overcomes geographical limitations and can be installed in an indoor wind tunnel, combined with a portable wind tunnel, or installed in the field environment to conduct relevant research under natural wind conditions, so as to meet the test requirements of various sand dust experiments and anti-wind sand stress experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further elaborates on the specific implementation manners of the present invention in conjunction with the drawings.

[0020] Figure 1 It is the front view of the present invention.

[0021] Figure 2 It is the side view of the present invention.

[0022] Figure 3 It is the schematic horizontal structure diagram of the sand quantity control slide plate in the present invention.

[0023] In the figure: 1 - sand hopper, 11 - built-in detachable screen, 12 - hinged small door, 2 - adjustable sand dust quantity device, 21 - rotating roller, 22 - sand quantity control slide plate, 221 - sand leakage hole, 222 - sand leakage groove, 223 - edge protrusion, 224 - sliding hole, 225 - bolt, 23 - handle drive, 24 - adjustable sand dust quantity device bracket, 25 - sliding sleeve, 3 - box structure. DETAILED DESCRIPTION OF THE INVENTION

[0024] As Figures 1 to 3 shown, a sandstorm simulation generator includes a sand hopper 1 with a hinged small door 12 fixed on a support Ⅰ 13, an adjustable sand dust quantity device 2 placed at the bottom of the sand hopper 1, and a box structure 3 placed below the adjustable sand dust quantity device 2.

[0025] An inner detachable screen 11 is provided in the upper middle part of the sand hopper 1; the adjustable sand dust quantity device 2 includes a support Ⅱ 24, a handle 23, and a sand quantity control slide plate 22; a rotating shaft is provided in the middle of the support Ⅱ 24, and one end of the rotating shaft is connected to the handle 23; sliding sleeves 25 are respectively provided on both sides of the top of the support Ⅱ 24, and a sand quantity control slide plate 22 is horizontally placed inside the sliding sleeve 25; a pair of rotating rollers 21 are symmetrically provided on both sides of the rotating shaft, and the rotating roller 21 is in contact with the sand quantity control slide plate 22; sliding holes 224 are provided on both sides of the sand quantity control slide plate 22, and the sliding holes 224 are connected to the sliding sleeve 25; multiple rows of sand leakage holes 221 or sand leakage grooves 222 of different forms are provided on the sand quantity control slide plate 22.

[0026] Among them: The built-in detachable screen 11 is inclined and connected to the sand hopper 1 through a buckle.

[0027] On the sand hopper 1 on one side of the bottom edge of the built-in detachable screen 11, there is a hinged small door 12, which can timely discharge larger particle size sand grains or sundries from the sand hopper at any time.

[0028] The built-in detachable screen 11 is a set of screens with different aperture sizes, and can be replaced with screens of different aperture sizes at any time according to the actual particle size of the dust.

[0029] The sand volume control slide plate 22 is a set of rectangular steel plates with different aperture sizes or sand leakage amounts, and can be replaced at any time according to the test requirements to accurately control the sand leakage amount or the dust amount.

[0030] The width of each row of different forms of sand leakage holes 221 or sand leakage grooves 222 is equal to the width of the bottom of the sand hopper 1.

[0031] Raised portions 223 are provided at the edges of each row of different forms of sand leakage holes 221 or sand leakage grooves 222.

[0032] The sliding sleeve 25 is fixed to the support II 24 by bolts 225.

[0033] Thread I is provided on the rotating roller 21, and this thread I is matched with the thread II provided at the bottom of the sand volume control slide plate 22.

[0034] The box structure 3 can be used to receive the dust leaking through the adjustable dust amount device 2.

[0035] The rotating roller 21 can rotate through the handle 23 to horizontally move the sand volume control slide plate 22. When the sand volume control slide plate 22 moves to a certain row of sand leakage holes 221 or sand leakage grooves 222 required, it can closely fit with the bottom of the sand hopper 1.

[0036] During the equipment installation process, first, the two side surfaces of the sand volume control slide plate 22 are horizontally placed in the sliding sleeves 25 above the support II 24 of the adjustable dust amount device 2. Then, the rotating roller 21 of the adjustable dust amount device 2 can rotate through the handle 23 to horizontally move the sand volume control slide plate 22. Since there is thread II at the bottom of the two side surfaces of the sand volume control slide plate 22, which can be matched with the rotating roller 21, therefore, when controlling the handle 23, the sand volume control slide plate 22 can be moved to the sand leakage holes 221 or sand leakage grooves 222 required for the test.

[0037] Before the test, according to the relevant test requirements, place the built-in detachable screen 11 with a suitable aperture size in advance. At this time, slowly introduce the external sand grains into the sand hopper 1. After the separation effect of the built-in detachable screen 11, part of the sand grains enter the bottom of the sand hopper 1, and the other part of the sand grains with larger particle sizes are discharged through the hinged small door 12 at the upper part of the sand hopper 1.

[0038] The present invention can be combined with wind tunnel equipment to simulate the characteristics of the sand flow field of sandstorms at different levels, and can also be used for the simulation test research of artificial sandstorms in the wild. It can also carry out relevant simulation test research under dust environment or haze meteorological conditions. By selecting different sand leakage forms, the sand leakage amount or sand and dust amount can be accurately regulated, and by flexibly simulating the occurrence modes and sand and dust environments of sandstorms at different levels, the response characteristics of certain objects or plants in the sand and dust environments at different angles and different orientations can be studied.

[0039] Example 1 Combine the sandstorm simulation generator with a wind tunnel to simulate the sand and dust environment.

[0040] Install the sandstorm simulation generator on the upper part of the wind tunnel test section, install the sand amount control slide plate 22, adjust it to the required row of sand leakage grooves 222 or sand leakage holes 221, and then control the sand amount control slide plate 22 above the support II 24 through the bolt 225. Slowly inject the flowing sand from above the sand hopper 1, and the flowing sand enters the wind tunnel test section through the sand leakage holes 221 or sand leakage grooves 222. At this time, the wind tunnel is turned on and regulated to the set wind speed. For each row of sand leakage holes 221 or sand leakage grooves 222, the sand leakage amount per minute can be measured during the natural leakage process. Therefore, the level of the sand flow or sandstorm can be set with reference to the sand leakage amount during the relevant test process. During the test process, as the wind speed gradually increases, the sand leakage amount can be correspondingly increased by adjusting the sand amount control slide plate 22, so as to simulate the sandstorm or sand and dust environment in the near-natural state.

[0041] Example 2 Place the sandstorm simulation generator in the wild natural environment to simulate the sand and dust environment.

[0042] In the wild environment, the sandstorm simulation generator can be placed in the natural wind condition to simulate the sand blowing or floating dust environment. Place the sandstorm simulation generator horizontally perpendicular to the main wind direction, inject the sand and dust into the sand hopper 1, and adjust it to the appropriate sand leakage hole 221 or sand leakage groove 222. Place the experimental materials (such as plants cultivated in flower pots) or test models, etc. at the downwind side of the sand leakage hole 221 or sand leakage groove 222. Under the natural wind condition, open the sand leakage hole 221 or sand leakage groove 222, and at this time, a sand and dust environment is generated at the downwind side. Through this method, the sand and dust interception ability of different plants or their sand and dust fixation ability can be studied, and the wind and sand prevention performance of relevant instruments or a certain device in the sand and dust environment can also be studied.

[0043] Example 3: Install a variable-frequency fan on one side of the box structure 3 and extend the other side, then it can be quickly assembled into a portable wind tunnel. By adjusting different sand leakage methods and sand leakage amounts to match the wind speed, different levels of sandstorms and sand-dust environments can be simulated.

Claims

1. A sandstorm simulation generator, characterized in that: The generator includes a sand hopper (1) with a hinged small door (12) fixed on a bracket Ⅰ (13), an adjustable sand dust amount device (2) placed at the bottom of the sand hopper (1), and a box structure (3) placed below the adjustable sand dust amount device (2); an internally placed detachable screen (11) is provided in the upper middle part of the sand hopper (1); the adjustable sand dust amount device (2) includes a bracket Ⅱ (24), a handle (23), and a sand amount control slide plate (22); a rotating shaft is provided in the middle of the bracket Ⅱ (24), and one end of the rotating shaft is connected to the handle (23); sliding sleeves (25) are respectively provided on both sides of the top of the bracket Ⅱ (24), and the sand amount control slide plate (22) is horizontally placed inside the sliding sleeves (25); a pair of rotating rollers (21) are symmetrically provided on both sides of the rotating shaft, and the rotating rollers (21) are in contact with the sand amount control slide plate (22); sliding holes (224) are provided on both sides of the sand amount control slide plate (22), and the sliding holes (224) are connected to the sliding sleeves (25); multiple rows of sand leakage holes (221) or sand leakage grooves (222) with different forms are provided on the sand amount control slide plate (22); the width of each row of sand leakage holes (221) or sand leakage grooves (222) with different forms is equal to the width of the bottom of the sand hopper (1); protrusions (223) are provided on the edges of each row of sand leakage holes (221) or sand leakage grooves (222) with different forms.

2. The sandstorm simulation generator according to claim 1, characterized in that: The internally placed detachable screen (11) is inclined and connected to the sand hopper (1) through a buckle.

3. A sandstorm simulation generator according to claim 2, characterized in that: The hinged small door (12) is provided on the sand hopper (1) on one side of the bottom edge of the internally placed detachable screen (11).

4. The sandstorm simulation generator according to claim 1, wherein: The internally placed detachable screen (11) is a set of screens with different aperture sizes.

5. A sandstorm simulation generator according to claim 1, characterized in that: The sand amount control slide plate (22) is a set of rectangular steel plates with different aperture sizes or sand leakage amounts.

6. The sandstorm simulation generator according to claim 1, characterized in that: The sliding sleeve (25) is fixed on the bracket Ⅱ (24) through a bolt (225).

7. The sandstorm simulation generator according to claim 1, characterized in that: Threads Ⅰ are provided on the rotating rollers (21), and the threads Ⅰ are matched with the threads Ⅱ provided at the bottom of the sand amount control slide plate (22).

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