CN115025555A

CN115025555A - Dust-containing gas filtering gas circuit imitating groove structure on surface of plant leaf

Info

Publication number: CN115025555A
Application number: CN202210826949.1A
Authority: CN
Inventors: 郭丽; 贾莹莹; 赵波; 李默
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2022-09-09
Anticipated expiration: 2042-07-13
Also published as: CN115025555B

Abstract

The invention discloses a dust-containing gas filtering gas circuit with a groove structure on the surface of a simulated plant leaf, which comprises: the gas path pipeline and the collision filter plate are integrally formed; the gas circuit pipeline is an N-shaped pipeline consisting of filter sections at two ends and a flow section in the middle; the collision filter plates are mutually staggered and superposed and are arranged in the filter section in parallel along the radial direction, and a gas channel with a plurality of bends is formed between the collision filter plates and the gas channel pipeline; the two end surfaces of the collision filter plate are collision surfaces, an arc bionic groove concentric with the collision filter plate is formed in each collision surface, and the cross section of each bionic groove is in an equilateral triangle shape; and pipeline connectors are also arranged at the two ends of the pipeline connector. The dust-containing gas filtering gas circuit can effectively remove particles with different levels of particle sizes in gas, has low resistance pressure and long dust retention time, and can remove the particles on the surface of the filtering structure through water washing to realize repeated use.

Description

Dust-containing gas filtering gas circuit imitating groove structure on surface of plant leaf

Technical Field

The invention belongs to the technical field of gas filtration, is mainly used for detecting dusty gas, and particularly relates to a dusty gas filtering gas circuit simulating a groove structure on the surface of a plant leaf.

Background

In recent years, with the rapid development of economy and the increase of energy consumption, the pollution of harmful gases is becoming more serious, and the detection of the harmful gases becomes an important means for improving the regional environment level, improving the living quality and guaranteeing the human health. However, under the dusty working condition that dust is raised and dissipated, gas detection is often interfered by dust particles, along with the extension of detection time, the detection precision of an instrument is greatly reduced, and the service life is also influenced by different degrees.

Among the prior art, dirty gaseous detection device's gas circuit passageway is ordinary pipeline structure, does not have the filtering action to the particulate matter in the dirty air current, need add special filtration alone and filter the particulate matter, and current filtration mainly utilizes the fine filtration pore of crossing that the filter medium surface is less than the particulate matter diameter to intercept solid particle, and gaseous then can pass through filter medium surface filtration pore smoothly to reach the purpose of gas-solid separation. However, there are problems with this filtering approach: firstly, the resistance of the filter medium to air is large, and the resistance pressure drop is high; secondly, the dust holding capacity of the filter medium is limited, the accumulation of the particles on the surface of the filter medium is increased along with the increase of the service time, the particles can block the aperture of the filter medium, so that the resistance pressure drop is increased rapidly and even the air is not ventilated any more, the filter medium can not be reused, a new filter medium needs to be replaced, and the material consumption is high.

Therefore, it is necessary to design a new filtering mechanism for dust-containing gas to solve the above problems in the prior art.

Through studying the surface of the plant leaves in the nature, researchers find that the surfaces of some plant leaves have stronger retention and adsorption capacity of particles, and can effectively remove the particles in the air. Through further systematic research, the plant leaves generally realize the adsorption of particles in the air through three main modes of adhesion, adhesion and absorption, so that the content of the particles in the atmosphere is reduced; wherein, the 'attaching' mode means that the plant leaves retain the particulate matters in the atmosphere by virtue of the surface microstructure of the plant leaves, and the coarser leaves on the surface are more beneficial to retaining the particulate matters; "adhering" means that the plant leaves rely on surface secretions to adhere the particulate matter to the leaf surface; by "absorption" is meant that the plant leaves rely on surface pores to adsorb fine particulate matter into the pores. Through observing the discovery to different blade surfaces, the recess form microstructure on plant blade surface has showing the dirt capacity that holds up that has improved the blade, makes more particulate matters stop in the recess with "adnexed" mode, even the particulate matter that adheres to in the recess also is difficult for resuspension under the effect of wind, can erode the particulate matter to ground through the rainwater simultaneously, and then resumes the dirt capacity that holds up of blade. Therefore, the groove microstructure on the surface of the plant leaf has great reference significance for designing a novel dust-containing gas filtering structure.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the dust-containing gas filtering gas circuit with the groove structure imitating the surface of the plant leaf, which can effectively remove particles with different levels of particle sizes in gas, has low resistance pressure and long dust retention time, and can remove the particles on the surface of the filtering structure through water washing to realize repeated use.

The technical scheme of the invention is as follows by combining the attached drawings of the specification:

a dirty gas of imitative plant leaf surface groove structure filters gas circuit includes: the gas circuit pipeline 2 and the collision filter plate 3 are integrally formed;

the gas path pipeline 2 is an N-shaped pipeline consisting of filtering sections at two ends and a flow section in the middle;

the collision filter plates 3 are mutually staggered and superposed and are arranged in the filter section in parallel along the radial direction, and a gas channel with a plurality of bends is formed between the collision filter plates and the gas channel pipeline 2;

the two end faces of the collision filter plate 3 are collision surfaces 301, arc-shaped bionic grooves 302 concentric with the collision filter plate 3 are formed in the collision surfaces 301, and the cross sections of the bionic grooves 302 are equilateral triangles.

Further, the collision surface 301 is a concave conical surface concentric with the collision filter plate 3.

Further, the cross section of the bionic groove 302 is in the shape of an equilateral triangle with the side length of 1.2 mm.

Furthermore, three semicircular collision filter plates 3 are respectively arranged in the filter sections of the air channel pipelines 2, and the three semicircular collision filter plates 3 are arranged in a staggered and superposed mode in an angle mode.

Further, still include: a pipeline connector 1;

the connecting body 102 of the pipeline connector 1 is in a cone shape, the conical top of the connecting body 102 is provided with a connecting nozzle 101, and the conical bottom of the connecting body 102 is provided with a connecting part used for being connected with the gas pipeline 2.

Furthermore, the pipe connector 1 is in threaded connection with the gas path pipe 2.

Furthermore, the dust-containing gas filtering gas circuit is made of resin.

Compared with the prior art, the invention has the beneficial effects that:

1. in the dust-containing gas filtering gas circuit, the filter sections at two ends of the N-shaped gas circuit pipeline are internally provided with the multiple layers of collision filter plates, so that the turbulence of dust-containing gas flow in the gas circuit channel is increased, the collision between particles and the collision filter plates is increased, the filtering capacity of the gas circuit channel on the particles is effectively improved, and the influence and the damage of the particles on a gas detection instrument are reduced.

2. In the dust-containing gas filtering gas circuit, the bionic grooves formed on the collision surfaces at the two ends of the collision filter plate simulate the microstructure of the surface of a plant leaf, so that more particles can be retained, and the secondary entrainment of the particles by the gas flow is reduced under the impact of the gas flow.

3. Compared with a linear pipeline, the N-shaped gas circuit pipeline of the dust-containing gas filtering gas circuit and the inner semi-cylindrical winding circulation gas circuit can obviously improve the filtering efficiency, the middle section of the gas circuit pipeline is linear, the resistance of the pipeline to the gas flow can be reduced, and the dust-containing gas filtering gas circuit has higher filtering performance in the whole view.

4. In the dust-containing gas filtering gas circuit, the collision surfaces are arranged at the two ends of the collision filter plate, so that the particles can be trapped at the two sides of the collision filter plate, and the time for filtering the particles in the dust-containing gas flow through the gas circuit channel can be greatly prolonged.

5. In the dust-containing gas filtering gas path, two ends of the dust-containing gas filtering gas path are provided with detachable pipeline joints with smaller calibers, and the dust-containing gas filtering gas path can be connected with an external gas detection device through the pipeline joints or communicated with dust-containing gas flows generated by other devices, so that dust-containing gas to be detected smoothly enters the gas path pipeline through the pipeline joints for filtering. In addition, when needs and dusty air current in the air under the dusty operating mode are connected, can also pull down the pipe connection head from the tip of gas circuit pipeline, make the gas circuit pipeline filter with the direct UNICOM of dusty air current under the dusty operating mode, the usage is extensive, and the practicality is stronger.

6. The dust-containing gas filtering gas circuit can remove particles retained on the collision surface of the collision filter plate through water washing or other methods, recover the dust retention capability of the collision surface, keep the interception capability of the gas circuit channel on the particles in the dust-containing gas flow, realize repeated use and avoid secondary pollutants.

Drawings

FIG. 1 is a schematic structural view of a dirty gas filtering circuit according to the present invention;

FIG. 2 is a schematic view of the external structure of the dirty gas filtering circuit according to the present invention;

FIG. 3 is a schematic view of a pipe joint structure of the dirty gas filtering circuit according to the present invention;

FIG. 4 is a first cross-sectional view of a dirty gas path according to the present invention;

FIG. 5 is a second cross-sectional view of the dirty gas filter circuit of the present invention;

fig. 6 is a partial enlarged view of the collision filter plate in the dust-laden gas filtering gas path of the present invention.

In the figure:

1-a pipeline connector, 2-a gas path pipeline and 3-a collision filter plate;

101-connection mouth, 102-connection body, 103-connection thread;

201-pipe body, 202-pipe thread;

301-impact surface, 302-biomimetic groove.

Detailed Description

For clearly and completely describing the technical scheme and the specific working process thereof, the specific implementation mode of the invention is as follows by combining the attached drawings of the specification:

in the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The invention discloses a dust-containing gas filtering gas circuit simulating a groove structure on the surface of a plant leaf, as shown in figure 1, the dust-containing gas filtering gas circuit comprises: the device comprises a pipeline connector 1, a gas pipeline 2 and a collision filter plate 3; wherein, two pipeline connector 1 detachably connects and installs at 2 both ends of gas circuit pipeline, and is a plurality of collision filter plate 3 sets up on the pipeline inner wall at 2 both ends of gas circuit pipeline integratively.

As shown in fig. 2, the gas pipeline 2 is arranged in an "N" shape, that is: the N-shaped air passage pipeline can be divided into three sections, namely a first filtering section at one end, a middle circulating section and a second filtering section at the other end, a certain height difference exists between an outlet of the first filtering section and an inlet of the second filtering section, and the middle circulating section slants downwards in a slant direction from the first filtering section to the second filtering section, so that the deposition amount of particles which are downwards inclined under the influence of gravity can be increased.

As shown in fig. 1, two pipe connectors 1 with the same structure are respectively connected to two ends of the gas pipeline 2 correspondingly and threadedly, wherein as shown in fig. 3, the pipe connector 1 is composed of a connector 101, a connecting body 102 and a connector thread 103, the connecting body 102 is in a cone shape, the connector 101 is integrally formed at the cone top of the connecting body 102, a circle of connecting ring is coaxially arranged at the cone bottom of the connecting body 102 along the circumferential direction, the connector thread 103 is arranged on the outer surface of the connecting ring, and a limiting ring surface is formed between the connecting body 102 and the connector thread 103.

As shown in fig. 4 and 5, the inner side walls of the two ends of the main pipe body 201 of the air passage pipe 2 are provided with pipe threads 202, the pipe threads 202 are matched with the joint threads 103, when the air passage pipe is installed, the pipe connector 1 is screwed and screwed with the pipe threads 202 of the main pipe body 201 through the joint threads 103, and after the air passage pipe is rotated to a limit position, the annular end surface of the main pipe body 201 abuts against the limit ring surface of the pipe connector 1, so that axial reliable positioning is realized.

As shown in fig. 3, in the pipe connector 1, the aperture of the connecting nozzle 101 is small, and is used for being connected with an external gas detection device or communicating with a dust-containing gas flow generated by other devices, so that the dust-containing gas to be detected smoothly enters the gas path pipeline 2 through the pipe connector 1 for filtering. In addition, when needs and dusty air current in the air under the dusty operating mode are connected, can pull down pipe connection head 1 from the tip of gas circuit pipeline 2, make gas circuit pipeline 2 and dusty air current direct UNICOM under the dusty operating mode filter.

As shown in fig. 1, the N-shaped gas path pipeline can be divided into three sections, namely a first filtering section at one end, a middle circulating section and a second filtering section at the other end; and the first filtering section and the second filtering section are in arc transition and integrated molding. The collision filter plate is arranged on the inner side walls of the first filter section and the second filter section, and effective filtration of the dust-containing gas inside is achieved.

As shown in fig. 1, 4 and 5, the collision filter plates 3 are integrally formed and connected to the inner side wall of the air path pipeline 2 in parallel along the radial direction, and the collision filter plates 3 located in the same filter section are arranged in parallel to each other.

The collision filter plate 3 is semi-circular structure, and the mutual crisscross superpose of collision filter plate 3 that is located same filter stage for corresponding position department at collision filter plate 3 place gas circuit pipeline 2 forms a semicircle gas circuit passageway, supplies the gas circulation, and forms a filtering surface that can cover 2 whole cross sections of gas circuit pipeline after the mutual superpose of collision filter plate 3 in the same filter stage along the axial, in order to realize that all can effectively filter through the dirty gas homoenergetic of this filter stage, avoids directly running through the situation of passing through. For example:

in this embodiment, three collision filter plates 3 are respectively arranged in the two filter sections, as shown in fig. 1, the first filter section on the left side in the figure: the collision filter plate 3 of the first layer is a 180-degree semicircular collision surface vertically arranged on the left side, the collision filter plate 3 of the second layer is a 180-degree semicircular collision surface vertically arranged on the right side, and the collision filter plate 3 of the third layer is a 180-degree semicircular collision surface horizontally arranged on the upper side; filter segment two on the right in the figure: the collision filter plate 3 of the first layer is a 180-degree semicircular collision surface horizontally arranged on the lower side, the collision filter plate 3 of the second layer is a 180-degree semicircular collision surface vertically arranged on the left side, and the collision filter plate 3 of the third layer is a 180-degree semicircular collision surface horizontally arranged on the right side. It can be seen that the collision filter plates 3 in the first filter section and the second filter section are in a complementary relationship, after dust-containing gas enters through the left end of the gas channel pipeline 2, dust in the gas flow sequentially collides and filters through the semicircular collision filter plates 3, and meanwhile the gas flow circulates through the semi-cylindrical winding pipeline formed by the other semicircle. Pipeline and the inside circulation pipeline that filters of N font because of increased sinuous nature, compare in the straight line shape pipeline, can show improvement filtration efficiency, and 2 interlude of gas circuit pipeline are straight line shape, can reduce the resistance of pipeline to the air current.

As shown in fig. 1 and 6, the collision filter plate 3 is a semicircular plate structure and is connected to the inner side wall of the gas path pipeline 2 along a radial direction, the end surfaces of the two sides of the collision filter plate 3 are collision surfaces 301 which are symmetrically arranged, the collision surfaces are concave concentric conical surfaces, and a bionic groove 302 of a concentric arc-shaped plant-like blade surface groove microstructure is formed on the collision surfaces 301, the cross section of the annular bionic groove 302 is an equilateral triangle, and the side length of the equilateral triangle is 1.2 mm. When dusty gas through with collision surface 301 collision contact of collision filter plate 3, bionic recess 302 can adsorb the retention particulate matter, can reduce the air current to the secondary entrainment of particulate matter simultaneously.

In addition, collision surface 301 is all equipped with to the both sides of hitting filter plate 3, so hit filter plate 3 both sides and all can hold back the particulate matter, can prolong the time that the particulate matter in the dirty air current is filtered to the gas circuit passageway greatly.

The dust-containing gas filtering gas path with the groove structure on the surface of the simulated plant leaf is made of resin, two halves of the dust-containing gas filtering gas path which are symmetrical along the axial direction are respectively printed through a 3D printing process, and the two halves are connected in an involution mode as shown in figures 4 and 5.

The working principle and the working process of the dust-containing gas filtering gas circuit are as follows:

when gas detection is carried out under the dusty working condition, the pipeline connector 1 at one end of the dusty gas filtering gas circuit is connected with a gas detection instrument, the other end of the dusty gas filtering gas circuit is connected with the gas to be detected through the pipeline connector 1 or directly places the opening of the gas circuit pipeline 2 in a detection area, the dusty gas to be detected enters the gas circuit pipeline 2 under the suction action of a gas pump of the gas detection instrument, after the dusty gas flows into the gas circuit channel, the air deflects due to the blocking of the collision filter plate 3, the gas to be detected can smoothly deflect to bypass the collision surface, and particulate matters in the dusty gas are intercepted due to the fact that the self inertia continuously moves along the original moving direction to collide with the collision surface 301 of the collision filter plate 3. Through the collision of 6 mutual crisscross collision surfaces in the inside filter segment one of gas circuit pipeline 2 and the filter segment two totally, can get rid of most particulate matter in the dirty gas, gas then can get into gas detection instrument smoothly and detect.

The gas path channel of the existing dust-containing gas detection device is of a common pipeline structure, has no filtering effect on particles in dust-containing gas flow, and needs a special filtering structure to filter the particles.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a dirty gas filtration gas circuit of imitative plant leaf surface groove structure which characterized in that:

the method comprises the following steps: the gas circuit pipeline (2) and the collision filter plate (3) are integrally formed;

the gas circuit pipeline (2) is an N-shaped pipeline consisting of filtering sections at two ends and a middle circulating section;

the collision filter plates (3) are mutually staggered and superposed and are arranged in the filter section in parallel along the radial direction, and a gas channel with a plurality of bends is formed between the collision filter plates and the gas channel pipeline (2);

the two end faces of the collision filter plate (3) are collision surfaces (301), an arc-shaped bionic groove (302) concentric with the collision filter plate (3) is formed in the collision surfaces (301), and the cross section of the bionic groove (302) is in an equilateral triangle shape.

2. The plant leaf surface groove structure-simulated dusty gas filtering gas circuit as claimed in claim 1, characterized in that:

the collision surface (301) is an inward concave conical surface concentric with the collision filter plate (3).

3. The plant leaf surface groove structure-simulated dusty gas filtering gas circuit as claimed in claim 1, characterized in that:

the cross section of the bionic groove (302) is in the shape of an equilateral triangle with the side length of 1.2 mm.

4. The plant leaf surface groove structure-simulated dusty gas filtering gas circuit as claimed in claim 1, characterized in that:

the filter section of the gas circuit pipeline (2) is internally provided with three semicircular collision filter plates (3) respectively, and the three semicircular collision filter plates (3) are arranged in a staggered and superposed mode in an angle mode.

5. The plant leaf surface groove structure-simulated dusty gas filtering gas circuit as claimed in claim 1, characterized in that:

further comprising: a pipe joint (1);

the connecting body (102) of the pipeline connector (1) is in a cone cylinder shape, the conical top of the connecting body (102) is provided with a connecting nozzle (101), and the conical bottom of the connecting body (102) is provided with a connecting part used for being connected with the gas circuit pipeline (2).

6. The plant leaf surface groove structure-simulated dusty gas filtering gas circuit as claimed in claim 4, characterized in that:

the pipeline connector (1) is in threaded connection with the gas circuit pipeline (2).

7. The plant leaf surface groove structure-simulated dusty gas filtering gas circuit as claimed in claims 1-5, wherein:

the dust-containing gas filtering gas circuit is made of resin.