Bionic low-wind-resistance dust-retaining device

Abstract

The application discloses a kind of bionic low wind resistance dust arrestment device, comprising: bionic dust arrestment box, bionic dust arrestment box has dust arrestment cavity, bionic dust arrestment box side is respectively provided with air inlet and air outlet, bionic dust arrestment box is spaced apart and provided with multiple imitation cuttlebone unit columns, and the axis of imitation cuttlebone unit column is respectively parallel with the plane where air inlet is, imitation cuttlebone unit column is gradually increased from head to tail cross section and is arranged, multiple imitation cuttlebone unit column outside is spirally wrapped with at least one imitation shark intestine spiral flow guide band along first preset direction.The microstructure of imitation cuttlebone unit column is simulated to the microstructure of cuttlebone, to further reduce the turbulence of secondary dust-containing airflow, reduce the disturbance of turbulent air mass, the curve of imitation shark intestine spiral flow guide band imitates the characteristic spiral structure of great white shark intestine, increase the surface area of dust-containing airflow boundary boundary layer, effectively consume the kinetic energy of dust haze particulate matter, thereby effectively improve the dust arrestment efficiency.

Description

TECHNICAL FIELD

[0001] The application discloses a bionic low-wind-resistance dust-retaining device and belongs to the technical field of atmospheric environmental protection. BACKGROUND

[0002] In the process of industrial production and material storage and transportation such as mine exploitation, coal and ore stacking, and port loading and unloading, dust is diffused, causing serious air pollution, which greatly affects the life and work of residents. Therefore, in the areas with serious air pollution, effective dust-retaining measures are urgently needed, which can not only improve air quality and reduce potential threats to residents' health, but also help related industries to meet environmental protection requirements and promote sustainable development.

[0003] In the dust-retaining technical field, the traditional dust-retaining device has many limitations, such as high construction cost, more consumables, more cumbersome, and poor adaptability to wind direction changes. The existing device mainly slows down the speed of dust-containing airflow and increases the collision frequency between particles to realize the settlement of particulate matters, thereby reducing the concentration of suspended particles in the air. Some small particles are difficult to be completely removed and are easily raised again when encountering strong airflow, causing secondary pollution problems. In the case of high wind speed, heavy materials such as steel are generally used, resulting in more consumables and high cost. In addition, although a few dust-suppressing nets with adsorption function can capture a certain amount of dust, they quickly reach saturation state and lack effective mechanisms to concentrate the adsorbed pollutants. At the same time, the pore structure of these products is usually designed to be relatively simple and direct, which limits the effective interception ability of particles of different sizes. In addition, the types of products available on the market are relatively single in terms of material selection.

[0004] There is a spiral network around the internal passage of the shark intestine, and this unique structure promotes the unidirectional flow of liquid in the shark digestive tract. The cuttlebone material is found to have a multi-layer continuous corrugated array structure and is a thin-walled hollow structure, which can realize lightweight and high reinforcement, and the Reynolds number is small under natural wind power. Imitating the spiral structure of the shark intestine and the microstructure of the cuttlebone can provide an important theoretical basis for the design of the bionic low-wind-resistance dust-retaining device. SUMMARY

[0005] The application aims to solve the problem of low adsorption performance of the existing traditional dust-retaining device and proposes a bionic low-wind-resistance dust-retaining device.

[0006] The problem to be solved by the application is realized by the following technical scheme:

[0007] The application discloses a bionic low-wind-resistance dust-retaining device, which comprises a bionic dust-retaining box, an air inlet and an air outlet arranged on the side of the bionic dust-retaining box, a plurality of bionic cuttlebone unit columns arranged in the bionic dust-retaining box at intervals, and at least one bionic shark intestine spiral flow guide belt spirally arranged outside the bionic cuttlebone unit columns along a first preset direction, wherein the axis of the bionic cuttlebone unit column is parallel to the plane where the air inlet is located, the cross section of the bionic cuttlebone unit column gradually increases from the head to the tail, and the air containing dust and haze particles enters the bionic dust-retaining box through the air inlet, is guided and dusted by the bionic cuttlebone unit columns and the bionic shark intestine spiral flow guide belt, and then goes out of the bionic dust-retaining box through the air outlet.

[0008] Further, the bionic cuttlebone unit column has a bionic cuttlebone cavity, the cavity profile of the bionic cuttlebone cavity gradually increases from the top end to the bottom end, and the ratio of the wall thickness of the bionic cuttlebone unit column to the height of the bionic cuttlebone unit column ranges from 1:120 to 1:180.

[0009] Further, the included angle between the bionic shark intestine spiral flow guide belt and the outer profile surface of the bionic cuttlebone unit column is 90 degrees, and the width of the bionic shark intestine spiral flow guide belt along the second preset direction is K, wherein the value of K ranges from 1 to 2.2, and the unit of K is centimeter.

[0010] Further, the bionic cuttlebone unit column is fitted to obtain a hyperbolic cosine function curve as shown in formula (1).

[0011] f(t) = Acosh(ωt) + B (1)

[0012] wherein the value of A ranges from -1.3 to -0.9, the value of B ranges from 20 to 32, the value of ω ranges from 0.8 to 1.6, and the value of t ranges from -4.5 to 4.5, and the unit of t is centimeter.

[0013] Further, the bionic shark intestine spiral flow guide belt is fitted to obtain a spiral curve equation as shown in formula (2).

[0014]

[0015] wherein r is the distance between the moving point of the spiral curve on the Cartesian coordinate system and the spiral axis, the value of r ranges from 0 to 4.5, the value of θ ranges from 2.81 to 5, the value of q ranges from 0 to 6.5, the value of x ranges from -4.5 to 4.5, the value of y ranges from -4.5 to 4.5, and the value of z ranges from 0 to 31.1, wherein the unit of r, x, y and z is centimeter, and the unit of θ is radian.

[0016] Further, the dust stagnation cavity, the plurality of cuttlefish bone unit columns and the shark intestine spiral flow guide belt are respectively sprayed with electrostatic adsorption paint.

[0017] Further, the dust collection box is arranged at the bottom of the dust stagnation cavity and is movably connected to the bionic dust stagnation box.

[0018] Further, the bionic dust stagnation box comprises a box body having a dust stagnation cavity, a partition plate arranged in the dust stagnation cavity and dividing the dust stagnation cavity into a sedimentation cavity and a dust collection cavity, a dust collection box movably arranged in the dust collection cavity, a plurality of cuttlefish bone unit columns arranged in the sedimentation cavity, and a plurality of through holes arranged on the partition plate.

[0019] Further, an opening is arranged on one side of the dust collection cavity, the dust collection box has a dust collection position in the dust collection cavity, and at least part of the dust collection box has a cleaning position outside the dust collection cavity.

[0020] Further, the bionic dust stagnation box further comprises a first fence in a honeycomb lattice structure and arranged at the air inlet, and a second fence arranged at the air outlet.

[0021] The present application has the following beneficial effects compared with the prior art:

[0022] The present application discloses a bionic low-wind-resistance dust stagnation device, which imitates the microstructure of cuttlefish bone through cuttlefish bone unit columns to further reduce the turbulence degree of secondary dust-containing airflow and decompose the dust-containing airflow into smaller laminar flow, reduce the disturbance of turbulent air mass, and imitate the characteristic spiral structure of the intestine of great white shark through the curve of the shark intestine spiral flow guide belt to realize the functions of flow guiding and prolonging the motion trajectory of the dust-containing airflow, increase the surface area of the boundary boundary layer of the dust-containing airflow, effectively consume the kinetic energy of dust haze particles, promote the sedimentation of the dust haze particles, prevent the generation of reverse flow when the dust-containing airflow spirally flows around the cuttlefish bone unit column, promote the sedimentation process of the dust haze particles in the dust-containing airflow, further increase the collision probability between the dust haze particles and the solid wall, and effectively improve the dust stagnation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a perspective view of the bionic low-wind-resistance dust stagnation device of the present application;

[0024] Figure 2 is an internal structure view of the bionic low-wind-resistance dust stagnation device of the present application;

[0025] Figure 3This is a cross-sectional view of the squid bone-like unit column in a biomimetic low-wind-resistance dust-trapping device of the present invention.

[0026] Figure 4 This is a schematic diagram showing the width of the shark intestine-inspired spiral guide belt in a biomimetic low-wind-resistance dust device of the present invention.

[0027] Figure 5 This is a schematic diagram of the structure of the partition plate in the biomimetic low wind resistance dust trapping device of the present invention;

[0028] in:

[0029] 1-First fence;

[0030] 2-Second fence;

[0031] 3-Dust collection box;

[0032] 4-Bionic dust retention box;

[0033] 5-Imitation squid bone unit column;

[0034] 6-Skeleton-like spiral drainage band inspired by shark intestines;

[0035] 41-Dust retention chamber;

[0036] 42- Enclosure;

[0037] 43-Spare plate;

[0038] 431 - Through hole. Detailed Implementation

[0039] The following is based on the appendix Figures 1-5 Further explanation of the present invention:

[0040] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] As shown in Figure 1 and Figure 2 The first embodiment of the present application provides a bionic low-wind-resistance dust-retention device on the basis of the prior art, comprising: a bionic dust-retention box 4 and a plurality of bionic cuttlebone unit columns 5. The bionic dust-retention box 4 has a dust-retention cavity 41, and the bionic dust-retention box 4 is provided with an air inlet and an air outlet on the side surface respectively. The plurality of bionic cuttlebone unit columns 5 are arranged at intervals in the bionic dust-retention box 4. The bionic cuttlebone unit column 5 simulates the microstructure of the cuttlebone, and the axis of the bionic cuttlebone unit column 5 is parallel to the plane where the air inlet is located. The cross section of the bionic cuttlebone unit column 5 gradually increases from the head to the tail.

[0044] The bionic cuttlebone unit column 5 fits the hyperbolic cosine function curve as follows:

[0045] f(t)=Acosh(ωt)+B (1)

[0046] Wherein: the value range of A is -1.3≤A≤-0.9; the value range of B is 20≤B≤32; the value range of ω is 0.8≤ω≤1.6; the value range of t is -4.5≤t≤4.5, wherein the unit of t is centimeter.

[0047] In an exemplary embodiment, the hyperbolic cosine function of the present embodiment is f(t)=-cosh(1.2t)+22, that is, A is -1, B is 22, ω is 1.2, there are 6 bionic cuttlebone unit columns 5, and the overall structure of the bionic dust-retention box 4 composed of the array of 6 bionic cuttlebone unit columns 5 is similar to the lattice sandwich structure of the cuttlebone, which can realize lightweight and high strengthening of the device, improve the bending strength of the device when it is impacted by the dust-containing airflow, and further improve the wind vibration resistance of the device. Moreover, under the natural wind force, the Reynolds number of the bionic cuttlebone unit column 5 with a specific size range is small, the airflow flow is dominated by viscous force, which further reduces the turbulence of the secondary dust-containing airflow, decomposes it into smaller laminar dust-containing airflow, reduces the disturbance of the turbulent air mass, reduces the wind resistance of the device, and further improves the wind vibration resistance of the device.

[0048] As shown in Figure 3As shown, the imitation cuttlebone unit column 5 has an imitation cuttlebone cavity, which is a hollow thin-walled structure, and the cavity profile gradually increases from the top end to the bottom end. The wall thickness of the imitation cuttlebone unit column 5 is M, the height of the imitation cuttlebone unit column 5 is L, and the ratio of the wall thickness M to the height L is in the range of 1:120 to 1:180.

[0049] A plurality of imitation cuttlebone unit columns 5 have at least one imitation shark intestine spiral flow guide belt 6 spirally wrapped outside along a first preset direction. In this embodiment, there is one imitation shark intestine spiral flow guide belt 6.

[0050] As shown, Figure 4 The angle between the imitation shark intestine spiral flow guide belt 6 and the outer profile surface of the imitation cuttlebone unit column 5 is 90°. The width of the imitation shark intestine spiral flow guide belt 6 along the second preset direction is K, and the value of K is in the range of 1≤K≤2.2, wherein the unit of K is centimeter. The spiral curve OP of the imitation shark intestine spiral flow guide belt 6 imitates the spiral curve characteristics of the great white shark intestine, and the spiral curve equation of the imitation shark intestine spiral flow guide belt 6 is as follows:

[0051]

[0052] Wherein: r is the distance between the moving point of the spiral curve on the Cartesian coordinate system and the spiral axis (usually taken as the Z axis), when z is equal to f(t) in formula (1), the value of r is the same as the value of t in formula (1); the value of r is in the range of 0≤r≤4.5, the value of θ is in the range of 2.81≤θ≤5, the value of q is in the range of 0<q≤6.5, the value of x is in the range of -4.5≤x≤4.5; the value of y is in the range of -4.5≤y≤4.5; the value of z is in the range of 0≤z≤31.1, wherein the units of r, x, y and z are centimeters, and the unit of θ is radian.

[0053] The imitation shark intestine spiral flow guide belt 6 can achieve the effects of flow guiding and prolonging the motion trajectory of the dust-containing airflow, increase the surface area of the boundary layer of the dust-containing airflow, effectively consume the kinetic energy of the dust and haze particles, and promote their settlement; and the feature structure can also prevent the occurrence of reverse flow phenomenon when the dust-containing airflow spirally flows around the imitation cuttlebone unit column 5, on the one hand, it can promote the settlement process of the dust and haze particles in the dust-containing airflow, and on the other hand, it can increase the collision probability between the dust and haze particles and the solid wall surface, thereby effectively improving the dust retention efficiency of the device.

[0054] Thus, the air with dust and haze particles enters the dust retention cavity 41 through the air inlet, is guided and settled by the plurality of imitation cuttlebone unit columns 5 and the imitation shark intestine spiral flow guide belt 6, and then exits from the air outlet.

[0055] Further, in the embodiment, the dust stagnation cavity 41, the plurality of cuttlefish bone unit columns 5 and the shark intestine spiral flow guide belt 6 are respectively sprayed with electrostatic adsorption paint. The electrostatic adsorption effect can be used to assist in adsorbing dust particles; and the coating makes the device have good corrosion resistance and anti-aging properties, can be used stably for a long time in various climate conditions, improves the weather resistance of the device, and further, the electrostatic adsorption paint uses micron-sized oxygen anion powder and polyether ether ketone powder mixed paint.

[0056] Further, as shown in Figure 1 、 Figure 2 and Figure 5 , the embodiment also includes a dust collection box 3, which is movably connected to the bionic dust stagnation box 4 and is used to collect dust particles after flow guiding and dust settling.

[0057] The specific structure of the bionic dust stagnation box 4 in the embodiment includes a box body 42 having a dust stagnation cavity 41, a partition plate 43 arranged in the dust stagnation cavity 41 to divide the dust stagnation cavity 41 into a settling cavity and a dust collection cavity, the dust collection box 3 being movably installed in the dust collection cavity, the plurality of cuttlefish bone unit columns 5 being installed in the settling cavity, the partition plate 43 being provided with a plurality of through holes 431, the dust particles passing through the through holes 431 into the dust collection box 3 after being settled and adsorbed by the plurality of cuttlefish bone unit columns 5 and the shark intestine spiral flow guide belt 6. One side of the dust collection cavity is provided with an opening, the dust collection box 3 has a dust collection position in the dust collection cavity, and at least part of the dust collection box 3 has a cleaning position moved outside the dust collection cavity.

[0058] Further, the bionic dust stagnation box 4 of the embodiment also includes a first fence 1 and a second fence 2, the first fence 1 being a honeycomb lattice structure, the first fence 1 being arranged at the air inlet, the honeycomb lattice of the first fence 1 having a negative Poisson's ratio effect, which can increase the bending strength of the device in the normal direction of the airflow, and assist in improving the mechanical properties of the device, the second fence 2 being arranged at the air outlet.

[0059] Specific working process:

[0060] The application is set up in the working area, the dust-containing airflow flows through the first fence 1 into the device, first, the honeycomb-shaped first fence 1 can break the large vortex of the dust-containing airflow and arrange it into a secondary airflow in a laminar flow state; second, the arranged dust-containing airflow enters the bionic dust-retaining box 4, when passing through the array of several imitation cuttlebone unit columns 5, due to the small Reynolds number of the imitation cuttlebone unit column 5 in the application in a specific size range under natural wind power, the fluid clusters of the secondary dust-containing airflow are dominated by viscous force, and the turbulence degree is further reduced and decomposed into smaller laminar dust-containing airflow; thereafter, the laminar dust-containing airflow spirally flows downward around the imitation cuttlebone unit column 5 under the guidance of the imitation shark intestine spiral flow guide belt 6, thereby prolonging the motion trajectory of the dust haze particles and promoting the sedimentation effect of the dust haze particles, and when the laminar dust-containing airflow moves along the imitation shark intestine spiral flow guide belt 6, a large number of boundary boundary layers are formed, the kinetic energy of the dust-containing airflow is converted into work done to overcome friction, the motion speed of the dust haze particles is reduced, and the collision probability of the dust haze particles and the solid wall surface is increased, thereby effectively improving the dust-retaining efficiency; in addition, the inside of the bionic dust-retaining box 4 is sprayed with oxygen negative ion powder, and when the dust-containing airflow flows through, electrostatic adsorption effect is generated by friction, which can assist in adsorbing dust haze particles; finally, the cleaned and filtered airflow flows out of the device from the second fence 2, and the dust haze particles settled or adhered in the bionic dust-retaining box 4 can enter the dust collection box 3 below through the through holes distributed on the partition plate 43, and the dust collection box 3 is regularly extracted according to the actual situation to clean the dust haze particles accumulated inside.

[0061] Although embodiments of the application have been disclosed in connection with the above specification and drawings, it should be understood that they are not limited to the specific details described therein. Rather, there are possible modifications and alterations that can be made thereto without departing from the spirit and scope of the application as more broadly described. Accordingly, the application is not limited to the particular examples disclosed, but the general principles and equivalents thereof apply to other implementations as would be ascertained by one of ordinary skill in the art. The scope of the application should be determined, not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

Claims

1. A biomimetic low wind resistance dust arrestment device, characterized by, The dust retention box (4) has a dust retention cavity (41), and the dust retention box (4) is provided with an air inlet and an air outlet on the side, respectively. A plurality of imitation cuttlebone unit columns (5) are arranged in the dust retention box (4) at intervals, and the axes of the imitation cuttlebone unit columns (5) are parallel to the plane where the air inlet is located. The cross section of the imitation cuttlebone unit column (5) gradually increases from the head to the tail. A plurality of the imitation cuttlebone unit columns (5) are spirally arranged outside at least one imitation shark intestine spiral flow guide belt (6) along a first preset direction. Air containing dust and haze particles enters the dust retention cavity (41) through the air inlet, and is guided and dusted by the plurality of imitation cuttlebone unit columns (5) and the imitation shark intestine spiral flow guide belt (6), and then goes out from the air outlet. The imitation cuttlebone unit column (5) has an imitation cuttlebone cavity, and the cavity profile of the imitation cuttlebone cavity gradually increases from the top end to the bottom end. The ratio of the wall thickness of the imitation cuttlebone unit column (5) to the height of the imitation cuttlebone unit column (5) is in the range of 1:120 to 1:

180. The width of the imitation shark intestine spiral flow guide belt (6) along the second preset direction is K, wherein the value of K is 1≤K≤2.2, and the unit of K is centimeter. The hyperbolic cosine function curve fitted by the imitation cuttlebone unit column (5) is shown in formula (1): ， Wherein, the value of A is in the range of -1.3≤A≤-0.9; the value of B is in the range of 20≤B≤32; the value of ω is in the range of 0.8≤ω≤1.6; the value of t is in the range of -4.5≤t≤4.5, and the unit of t is centimeter. The spiral curve equation fitted by the imitation shark intestine spiral flow guide belt (6) is shown in formula (2): ， Wherein: r is the distance between the moving point of the spiral curve on the Cartesian coordinate system and the spiral axis, the value of r is in the range of 0<r≤4.5, the value of θ is in the range of 2.81≤θ≤5, the value of q is in the range of 0<q≤6.5, the value of x is in the range of -4.5≤x≤4.5; the value of y is in the range of -4.5≤y≤4.5; the value of z is in the range of 0<z≤31.1, wherein the unit of r, x, y and z is centimeter, and the unit of θ is radian.

2. The biomimetic low-wind- resistance dust arrestment device according to claim 1, characterized in that, The included angle between the outer contour surface of the imitation shark intestine spiral flow guide belt (6) and the imitation cuttlebone unit column (5) is 90°.

3. The biomimetic low-wind- resistance dust arrestment device according to claim 2, characterized in that The dust retention cavity (41), the plurality of imitation cuttlebone unit columns (5) and the imitation shark intestine spiral flow guide belt (6) are respectively sprayed with electrostatic adsorption paint.

4. The biomimetic low-wind- resistance dust arrestment device according to claim 1, characterized in that, Further comprising: A dust collection box (3) is arranged at the bottom of the dust retention cavity (41), and the dust collection box (3) is movably connected with the dust retention box (4). The dust collection box (3) is used for collecting dust and haze particles after being guided and dusted.

5. A biomimetic low-drag dust arrestment device according to claim 4, wherein The dust retention box (4) comprises: A box body (42) having a dust retention cavity (41). A partition plate (43) is arranged in the dust stagnation cavity (41), which divides the dust stagnation cavity (41) into a settling cavity and a dust collection cavity, the dust collection box (3) is movably arranged in the dust collection cavity, a plurality of the imitation squid bone unit columns (5) are arranged in the settling cavity, a plurality of through holes (431) are arranged on the partition plate (43), and the dust and haze particles pass through the through holes (431) into the dust collection box (3) after being settled and adsorbed by the plurality of imitation squid bone unit columns (5) and the imitation shark intestine spiral flow guide belt (6).

6. The biomimetic low-wind- resistance dust arrestment device according to claim 5, characterized in that An opening is arranged on one side of the dust collection cavity, the dust collection box (3) has a dust collection position in the dust collection cavity, and at least part of the dust collection box (3) has a cleaning position which is moved out of the dust collection cavity.

7. The biomimetic low-wind- resistance dust arrestment device according to claim 1, wherein The bionic dust stagnation box (4) further comprises: A first fence (1) is a honeycomb lattice structure, and the first fence (1) is arranged at the air inlet; A second fence (2) is arranged at the air outlet.

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