KR102467875B1 - Fine dust measuring device of light scattering - Google Patents

Abstract

A light scattering fine dust measuring device according to a first embodiment of the present invention includes a chamber; a damper provided at an upper part of the chamber to inflow or block the inflow of the train wind containing fine dust and foreign substances having particles larger than the fine dust, and to remove the foreign substances when the train wind is introduced; a centrifugal force collector provided inside the chamber and separating the fine dust from the train wind by a centrifugal force by downward screwing the train wind passing through the damper; A collector provided on the lower side of the centrifugal dust collector and disposed so that the collecting surface of the collecting means for collecting the fine dust falling downward from the centrifugal dust collector after being separated from the train wind faces the lower part of the centrifugal dust collector; When some of the fine dust falling downward toward the collecting surface is introduced along with the train wind discharged to the lower side of the centrifugal dust collector, the concentration of the some fine dust is measured based on the scattered light of the train wind containing the some fine dust. a light scattering meter; and a rotating shaft of a collector having a rotating shaft for rotating the collecting surface and a motor for driving the rotating shaft in order to drop the fine dust collected on the collecting surface downward to the bottom of the chamber.

Description

Fine dust measuring device of light scattering}

The present invention relates to a light scattering type fine dust measuring device, and more particularly, to a device for measuring the concentration of fine dust in a train wind based on a light scattering method.

Recently, air pollution has become serious due to the influence of fine dust and the like. It is sometimes difficult to breathe smoothly in urban areas due to periodically repeated yellow dust, various fine dust, smog, etc., and dust particles distributed in the air scatter sunlight and obstruct vision. If such fine dust is inhaled into the human body as it is, it can penetrate into the alveoli and cause various lung diseases and respiratory diseases.

Various types of measurement equipment have been developed to determine the concentration of these dust particles and monitor air pollution. A typical example of these measurement devices is a light scattering measuring device that measures the concentration of fine dust contained in a sample gas by using laser light and scattering of fine dust.

Such light scattering measurement devices are disclosed in Korean Patent Registration No. 10-1881135 (hereinafter referred to as 'prior art 1'), Korean Patent Registration No. 10-1966492 (hereinafter referred to as 'prior art 2'), and Korean Patent Publication No. 10-2019-0019747 (hereinafter referred to as 'prior art 2'). Hereinafter, it has been disclosed in 'Prior Art 3').

Prior Art 1 is based on a light scattering method, and is a light scattering-based dust sensor that measures the amount of dust using a dust sensor that measures scattered light scattered by dust among light emitted from a light emitting unit, wherein a light receiving unit for calibration When the intensity of the direct light irradiated from the light emitting unit is directly received and output is different from the preset value, a value related to the size of the scattered light output by the dust sensor is calculated using the value related to the difference. can be corrected

Prior Art 2 relates to a dust sensor for a vehicle, comprising: a case having an inner space; a light source unit installed in the inner space of the case and radiating light to an air passage through which air and dust are introduced; a condensing lens for condensing the light irradiated from the light source unit and scattered by dust in the air in the air passage; a light receiving unit receiving the scattered light collected by the condensing lens and outputting an electrical signal corresponding to the dust concentration; and an inner housing installed in the inner space of the case to form the air passage, and to improve sensor performance deterioration or malfunction due to dust accumulation in the case, lens contamination, and disturbance light introduced from the outside. can

Prior art 3 includes a light emitting unit emitting incident light traveling in a first direction, a light receiving unit spaced apart from the light emitting unit in a second direction crossing the first direction, a scattering area provided between the light receiving unit and the light emitting unit, and disposed within the scattering area. It is composed of an additional module fixing part.

The prior arts 1 to 3 can measure the concentration value of fine dust based on the light scattering method, but when the fine dust concentration value is measured from the high-velocity train wind, the fine dust concentration value is accurately measured by the fast flow velocity of the train wind. It is difficult to do this, and since the train wind contains not only fine dust but also large foreign substances (eg, iron powder, etc.), there is a problem of low reliability in measuring the concentration of fine dust in the train wind.

Korean Patent Registration No. 10-1881135 Korean Patent Registration No. 10-1966492 Korean Patent Publication No. 10-2019-0019747

The present invention has been made to solve the above problems, and it is possible to accurately measure the concentration value of fine dust in the train wind by a light scattering method by reducing the flow rate of the train wind and removing foreign substances included in the train wind, through which the fine dust An object of the present invention is to provide a light-scattering fine dust measuring device capable of improving the reliability of the process of measuring the concentration.

However, the technical problem to be achieved in the present invention is not limited to the above-mentioned technical problems, and other technical problems not mentioned will become clear to those skilled in the art from the description below. You will be able to understand.

Light scattering type fine dust measuring device according to the first embodiment of the present invention for achieving the above object, the chamber; a damper provided at an upper part of the chamber to inflow or block the inflow of the train wind containing fine dust and foreign substances having particles larger than the fine dust, and to remove the foreign substances when the train wind is introduced; a centrifugal force collector provided inside the chamber and separating the fine dust from the train wind by a centrifugal force by downward screwing the train wind passing through the damper; A collector provided on the lower side of the centrifugal dust collector and disposed so that the collecting surface of the collecting means for collecting the fine dust falling downward from the centrifugal dust collector after being separated from the train wind faces the lower part of the centrifugal dust collector; When some of the fine dust falling downward toward the collecting surface is introduced along with the train wind discharged to the lower side of the centrifugal dust collector, the concentration of the some fine dust is measured based on the scattered light of the train wind containing the some fine dust. a light scattering meter; and a rotating shaft of a collector having a rotating shaft for rotating the collecting surface and a motor for driving the rotating shaft in order to drop the fine dust collected on the collecting surface downward to the bottom of the chamber.

In addition, the light scattering type fine dust measuring device according to the second embodiment of the present invention includes a chamber; A train wind inlet connected to the chamber and configured to allow a train wind containing fine dust and foreign substances having particles larger than the fine dust to flow in one direction and/or another direction is provided, and the train wind introduced through the train wind inlet is moved by a downward screw movement. a centrifugal force collector to remove the foreign matter from the train wind by centrifugal force and to screw upward the train wind from which the foreign matter is removed; a storage unit provided inside the chamber and connected to the centrifugal dust collector to store the train wind from which the foreign matter is removed; a collector provided on the lower side of the storage unit and disposed such that a collecting surface of a collecting means for collecting fine dust included in the train wind falling downward from the lower side of the storage unit faces the lower portion of the storage unit; When some of the fine dust falling downward toward the collecting surface is introduced along with the train wind discharged to the lower side of the storage unit, the concentration of the some fine dust is measured based on the scattered light of the train wind containing the some fine dust light scattering meter; and a rotating shaft of a collector having a rotating shaft for rotating the collecting surface and a motor for driving the rotating shaft in order to drop the fine dust collected on the collecting surface downward to the bottom of the chamber.

And the light scattering meter, the main body; an inlet pipe connected to the main body and penetrating one or more through-holes formed in the collecting means so that the train wind containing some of the fine dust is introduced into the main body; a discharge pipe connected to the main body and discharging the train wind containing some of the fine dust, the concentration of which has been measured, from the main body; a light emitting unit for radiating laser light toward the train wind containing some fine dust introduced into the main body; a detection unit for detecting scattered light scattered from the train wind including some of the fine dust by the laser light; a measurement unit for measuring the concentration value of some fine dust by analyzing the scattered light detected by the detection unit; and a mirror unit attached to and detached from the mirror groove of the main body and reflecting the scattered light toward the detection unit.

In addition, the rotating part of the collector rotates the collecting surface to discharge the fine dust falling downward from the collecting surface through the fine dust discharge port formed at the bottom of the chamber when the measurement of the concentration of some of the fine dust from the light scattering meter is completed. can be induced.

In addition, the damper may have upper and lower portions open for introduction and flow of train wind, and a plurality of train wind inlet portions having a truncated cone shape having a width of a lower portion larger than a width of an upper portion may be stacked.

In addition, in the plurality of train wind inlets, the upper part of the uppermost wind inlet part and the lower part of the lowermost wind inlet part are closed, and the remaining wind inlets except for the uppermost wind inlet part push the wind upward when the wind collides with the outer periphery of the side portion. movement to induce the train wind to flow into the lower part of the wind inlet part except for the wind inlet part at the bottom, and the wind inlet part except for the wind inlet part at the bottom sideward the wind when the inner circumference of the side collides with the wind introduced from the lower part. By moving, the train wind can be induced to flow toward the centrifugal dust collector.

Also, in the plurality of train wind inlets, a mesh filter may be provided at an upper part of the train wind inlet except for the uppermost train wind inlet to remove the foreign matter from the train wind.

In addition, the centrifugal force collector is provided below the damper, and the train wind turning part rotates a plurality of blades inclined at an angle for downward screw movement of the train wind discharged to the lower side of the damper; and provided on the lower side of the train wind turning part, the upper and lower portions being open, and the width of the lower part is the width of the upper part so that the fine dust separated from the train wind which is screwed downward while passing through the train wind turning part falls downward toward the collector along the inner wall. A hopper formed smaller; may be included.

The present invention can accurately measure the fine dust concentration value in the train wind by light scattering method by reducing the flow velocity of the train wind and removing foreign substances included in the train wind.

In addition, the present invention can accurately measure the fine dust concentration value in the train wind, so that the reliability of the process of measuring the fine dust concentration in the train wind can be improved.

However, the effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

1 is a conceptual diagram of a light scattering type fine dust measuring device according to a first embodiment of the present invention.
FIG. 2 is an explanatory diagram for explaining a train wind inflow and flow method of the damper shown in FIG. 1 .
3 is a cross-sectional view taken along line A-A' of FIG. 1;
4 is a perspective view of the light scattering meter shown in FIG. 1;
FIG. 5 is an explanatory diagram for explaining a method of attaching and detaching a mirror unit provided in the light scattering meter shown in FIG. 4 .
FIG. 6 is an explanatory view for explaining a method of rotating the collecting means of the rotating part of the collector shown in FIG. 1 .
7 is a conceptual diagram of a light scattering type fine dust measuring device according to a second embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. However, since the description of the present invention is only an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiment can be changed in various ways and can have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, the scope of the present invention should not be construed as being limited thereto.

The meaning of terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from another, and the scope of rights should not be limited by these terms. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element. It should be understood that when an element is referred to as “connected” to another element, it may be directly connected to the other element, but other elements may exist in the middle. On the other hand, when an element is referred to as being “directly connected” to another element, it should be understood that no intervening elements exist. Meanwhile, other expressions describing the relationship between components, such as “between” and “immediately between” or “adjacent to” and “directly adjacent to” should be interpreted similarly.

Singular expressions should be understood to include plural expressions unless the context clearly dictates otherwise, and terms such as “comprise” or “having” refer to a described feature, number, step, operation, component, part, or It should be understood that it is intended to indicate that a combination exists, and does not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Terms defined in commonly used dictionaries should be interpreted as consistent with meanings in the context of related art, and cannot be interpreted as having ideal or excessively formal meanings unless explicitly defined in the present invention.

Hereinafter, the light scattering type fine dust measuring device 1 of the first embodiment will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the light scattering type fine dust measuring device 1 of the first embodiment includes a chamber 10 and a damper 20 to measure the concentration of fine dust in a train wind based on a light scattering method. , a centrifugal force collector 30, a collector 40, a light scattering meter 50, and a rotating collector 60 are provided.

The chamber 10 is installed around the railroad on which trains run to allow train wind containing fine dust and foreign substances (eg, iron powder) to flow into the damper 20 .

The damper 20 is provided on the upper part of the chamber 10 so that the train wind flows into the chamber 10, and blocks the inflow of the train wind or removes foreign substances included in the train wind when the train wind is introduced. .

Such a damper 20 may be formed of a plurality of train wind inlets to allow train wind to flow in and the train wind to flow toward the centrifugal dust collector 30 .

At this time, as shown in FIG. 2, the plurality of train wind inlets are stacked upwards, and as a specific example, the first train wind inlet 21 at the top, the upper part is the lower part of the first train wind inlet 21 It may consist of a second train wind inlet 22 coupled with and a third train wind inlet 23 at the lowest end coupled with a lower portion of the second train wind inlet 22 .

The plurality of train wind inlets are not limited to the first, second, and third train wind inlets 21, 22, and 23, and may include more or fewer train wind inlets. However, hereinafter, it will be described that the plurality of train wind inlets are the first, second, and third train wind inlets 21, 22, and 23.

Upper and lower portions of the first, second, and third wind inlets 21, 22, and 23 are open so that wind flows in, and the upper portion of the first wind inlet 21 and the lower portion of the third wind inlet 23 are Closed.

The first, second, and third train wind inlets 21, 22, and 23 allow the train wind to be introduced at 360°, and at the same time, the train wind introduced into the inside flows toward the centrifugal dust collector 30 as a reflection action by collision. In order to do so, the width of the lower part is made in a truncated cone shape that is larger than the width of the upper part.

2 shows the wind inflow and flow methods of the first, second, and third train wind inlets 21, 22, and 23 using the truncated conical shape.

Referring to (a) of FIG. 2 , when the wind blows collide with the outer periphery of the side portion, the second train wind inlet 22 may induce the train wind to flow upward to the lower part of the first train wind inlet 21. When the wind collides with the outer periphery of the side portion, the third wind train inlet 23 moves the train wind upward and induces the wind to flow into the lower part of the second wind inlet 22 .

In addition, referring to FIG. 2 (b), the first train wind inlet 21 moves the train wind laterally when the train wind introduced from the bottom collides with the inner periphery of the side, so that the train wind blows the second train wind inlet 22 The second train wind inlet 22 moves the train wind laterally when the inner periphery of the side collides with the train wind introduced from the bottom, so that the train wind blows the third train wind inlet 23. It can be induced to flow toward the top, and after the train wind introduced into the upper part of the third train wind inlet 23 passes through the lower part of the third train wind inlet 23 and is introduced into the chamber 10, the centrifugal dust collector 30 ) can flow towards

As the first, second, and third train wind inlets 21, 22, and 23 collide with the high-velocity train wind, the flow speed of the train wind may be reduced before flowing toward the centrifugal dust collector 30.

Among the first, second, and third wind inlets 21, 22, and 23, the upper portions of the second and third wind inlets 22 and 23 with open tops are provided with mesh filters 22a and 23a to be included in the wind trains. Removes foreign substances with particles larger than fine dust.

As shown in FIG. 1, the centrifugal dust collector 30 is provided inside the chamber 10 so as to be disposed below the third thermal wind inlet 23, and passes through the third thermal wind inlet 23 using centrifugal force. It is provided with a train wind turning part 31 and a hopper 32 in order to separate fine dust from the train wind.

The train wind turning part 31 is provided on the lower side of the third train wind inlet 23, and as shown in FIG. A wing 31a is provided.

The plurality of blades 31a are preferably inclined at a certain angle as shown in FIG. 1 in order to screw down the train wind discharged from the lower side of the third train wind inlet 23.

The hopper 32 is provided on the lower side of the train wind turning part 31 so that the train wind driven downward by the plurality of blades 31a is introduced, and the upper part is opened, and fine dust and fine dust are separated from the train wind by the downward screw movement. The lower part is opened so that the dust-separated train wind is discharged from the inside.

The lower part of the hopper 32 is smaller than the upper part so that the fine dust separated from the train wind falls downward toward the collector 40 along the inner wall.

As shown in FIG. 1, the collector 40 is provided inside the chamber 10 so as to be disposed on the lower side of the hopper 32, and collects fine dust discharged from the lower part of the hopper 32 and falling downward. It is provided with means (41).

The collecting means 41 is a collecting surface 41a to which nanofibers capable of collecting fine dust are attached on one side of both sides, and the collecting surface 41a collects fine dust from the lower part of the hopper 32 to collect fine dust. It is preferable to face the lower part of the hopper 32 while falling down.

The light scattering meter 50 is based on the scattered light of the train wind containing some of the fine dust when some of the fine dust falling downward toward the collecting surface 41a is introduced together with the train wind discharged from the lower side of the hopper 32. In order to measure the concentration of some fine dust, as shown in Figs. 56) and a mirror unit 57.

The inlet pipe 51 is connected to one side of the main body 52, and passes through one or more through-holes 41b formed in the collecting means 41 so that the train wind including some fine dust is introduced into the main body 52.

The main body 52 is provided with an inlet pipe 51 on one side so that the train wind containing some fine dust flows into the inside, and mirror grooves 52a and 52b are provided on the upper and the other side so that the mirror unit 57 is fitted. is formed

The discharge pipe 53 is connected to the other side of the main body 52, and discharges the train wind containing some fine dust whose concentration value of fine dust has been measured through the measuring unit 56 from the inside of the main body 52 to the outside.

The light emitting part 54 consists of a laser emitting part and a focusing part, and generates the laser light 54a, and emits the laser light 54a in a direction perpendicular to the flow direction of the train wind introduced into the main body 52 through the inlet pipe 51. It is provided on the side of the main body 52 to irradiate.

The light emitting unit 54 may, for example, radiate laser light 54a having a wavelength of 809 nm towards a train wind containing some fine dust.

The detection unit 55 is provided on the second mirror 57b of the mirror unit 57 to detect scattered light scattered by the laser light 54a and some fine dust floating in the train wind, and converts the intensity of the received scattered light into an electrical signal. convert to

The measurement unit 56 is provided on the second mirror 57b and analyzes the scattered light converted into an electrical signal by the detection unit 55 using the principle of a light scattering method, and based on the analysis result of the scattered light, the concentration of some fine dust. measure the value

Here, the principle of the light scattering method is to determine the particle size with the sparkling size of the particles when scattered light is generated, and to measure the number of particles by size by counting the number of sparkling particles.

In addition, the fine dust measurement principle of the light scattering method displays the mass of some fine dust through a weight quantification operation for each size after measuring the fine particles of some fine dust with the principle of the light scattering method. At this time, some of the fine dust may have a particle size of 10 micro or less.

That is, the detection unit 55 of the present invention detects the scattered light of the fine dust floating in the train wind based on the principle of the light scattering method described above, and the measurement unit 56 detects the scattered light in the detection unit 55 based on the principle of the light scattering method. By analyzing the scattered light, it is possible to measure the concentration value of some fine dust.

The mirror unit 57 includes a first mirror 57a and a second mirror 57b that are detachable from the body 52 to reflect the laser beam 54a.

The first mirror 57a is detachably assembled to the mirror groove 52a formed on the upper side of the main body 52 to reflect scattered light.

The second mirror 57b is detachably assembled to the mirror groove 52b formed on the lower side of the main body 52 to reflect scattered light.

A detection unit 55 and a measurement unit 56 are attached to at least one of the first mirror 57a and the second mirror 57b.

Accordingly, the detector 55 detects the scattered light reflected by the mirror unit 57 after being scattered by the train wind containing some of the fine dust.

The collector rotation unit 60 is configured to collect fine dust on the collecting surface 41a or to drop the fine dust collected on the collecting surface 41a downward to the bottom of the chamber 10 (a) and (b) of FIG. 6 . As shown in ), a rotation shaft 61 and a motor 62 are provided.

The rotating shaft 61 rotates the collecting means 41 while being engaged with the coupling part 41d provided on the other surface 41c opposite to one surface of the collecting means 41 provided with the collecting surface 41a.

The rotating shaft 61 is preferably coupled to the coupling part 41d so that the inlet pipe 51 can pass through one or more through-holes 41b without overlapping with the through-holes 41b.

The motor 62 is connected to the rotating shaft 61 to drive the rotating shaft 61, and the light scattering meter 50 measures the concentration value of some fine dust through the driving of the rotating shaft 61, while the collecting surface 41a It is rotated to face the lower part of the hopper 32, and when the measurement of the concentration value of some fine dust from the light scattering meter 50 is completed, the collecting surface 41a faces the bottom of the chamber 10 so that the fine dust falls downward. rotate as much as possible.

At this time, the fine dust falling downward from the collecting surface 41a may be discharged to the outside through the fine dust outlet 11 formed at the bottom of the chamber 10 .

Hereinafter, the light scattering type fine dust measuring device 2 of the second embodiment will be described in detail, focusing on the configuration that does not overlap with the light scattering type fine dust measuring device 1 of the first embodiment.

Referring to FIG. 7, the light scattering type fine dust measuring device 2 of the second embodiment includes a centrifugal dust collector 30 to remove foreign substances included in the train wind, and the centrifugal dust collector 30 is provided with a hopper 32 and a train wind It has an inlet (33).

The hopper 32 performs a downward screw movement of the train wind introduced into the inside through the train wind inlet 33 so that foreign substances are separated from the train wind by centrifugal force, and then discharges the foreign substances to the outside through the open lower part. The train wind is screwed upward.

The train wind inlet 33 is combined with the upper part of the hopper 32 to allow the train wind to flow into the hopper 32, and has inlets 33a and 33b in one direction and the other direction to allow the train wind to flow in one direction and/or the other direction. ) is formed.

The light scattering fine dust measuring device 2 of the second embodiment includes a connection pipe 70 and a storage unit 80 as shown in FIG. 7 .

The connection pipe 70 connects the upper part of the hopper 32 and the upper part of the storage part 80 so that the train wind from which the foreign matter is separated, which is screwed upward in the hopper 32, flows toward the storage part 80. .

The storage unit 80 is provided in the upper part of the chamber 10 and stores the separated train wind from the foreign substances flowing along the connection pipe 70 after being discharged from the upper part of the hopper 32, and the upper part for storing the train wind. and the opening and closing of the lower part is made.

As a specific example, the storage unit 80 opens its upper part while the train wind flows along the connection pipe 70, but closes the lower part, and stores the train wind when the inflow of the train wind flowing along the connection pipe 70 is finished. The upper part and the lower part may be closed, and the upper part may be closed while the lower part may be opened when the stored train wind is discharged.

The storage unit 80 stores the high-velocity train wind from which foreign matter is separated and then discharges it toward the collector 40, so that the flow rate of the train wind from which the foreign matter is separated before the train wind from which the foreign matter is separated flows toward the collector 40. can reduce

The collector 40 is provided inside the chamber 10 so as to be provided on the lower side of the storage unit 40, and when the lower portion of the storage unit 80 is opened, the train wind discharged through the open lower side of the storage unit 80. It is provided with a collecting means 41 to collect the fine dust that falls downward together. Since the fine dust collecting method of the collector 40 is the same as that of the collector 40 of the first embodiment, a description thereof will be omitted.

The light scattering meter 50 measures the concentration value of some of the fine dust from the train wind containing some of the fine dust that is not collected by the collector 40. Since it is the same as the light scattering meter 50 of the example, a description thereof will be omitted.

The collector rotating unit 60 rotates the collecting means 41 so that the fine dust collected in the collecting means 41 falls downward toward the bottom of the chamber 10 . Since the rotation method of the collecting means 41 of the collector rotation unit 60 is the same as that of the collector rotation unit 60 of the first embodiment, a description thereof will be omitted.

Detailed descriptions of the preferred embodiments of the present invention disclosed as described above are provided to enable those skilled in the art to implement and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will understand that the present invention can be variously modified and changed without departing from the scope of the present invention. For example, those skilled in the art can use each configuration described in the above-described embodiments in a manner of combining with each other. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention. Accordingly, the above detailed description should not be construed as limiting in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that do not have an explicit citation relationship in the claims may be combined to form an embodiment or may be included as new claims by amendment after filing.

1, 2: light scattering fine dust measuring device, 10: chamber,
11: fine dust outlet, 20: damper,
21: first train wind inlet, 22: second train wind inlet,
23: third train wind inlet, 30: centrifugal dust collector,
31: train wind turning part, 31a: wing,
32: hopper, 33: train wind inlet,
33a, 33b: inlet, 40: collector,
41: collecting means, 41a: collecting surface,
41b: through hole, 41c: riding surface,
41d: coupling part, 50: light scattering meter,
51: inlet pipe, 52: main body,
53: discharge pipe, 54: light emitting part,
54a: laser light, 55: detection unit,
56: measuring unit, 57: mirror unit,
57a: first mirror, 57b: second mirror,
60: collector rotating part, 61: rotating shaft,
62: motor, 70: connector,
80: storage unit.

Claims (8)

In the light scattering fine dust measuring device,
chamber;
a damper provided at an upper part of the chamber to inflow or block the inflow of the train wind containing fine dust and foreign substances having particles larger than the fine dust, and to remove the foreign substances when the train wind is introduced;
a centrifugal force collector provided inside the chamber and separating the fine dust from the train wind by a centrifugal force by downward screwing the train wind passing through the damper;
A collector provided on the lower side of the centrifugal dust collector and disposed so that the collecting surface of the collecting means for collecting the fine dust falling downward from the centrifugal dust collector after being separated from the train wind faces the lower part of the centrifugal dust collector;
When some of the fine dust falling downward toward the collecting surface is introduced along with the train wind discharged to the lower side of the centrifugal dust collector, the concentration of the some fine dust is measured based on the scattered light of the train wind containing the some fine dust. a light scattering meter; and
Including; a collector rotation unit having a rotation shaft for rotating the collection surface and a motor for driving the rotation shaft in order to drop the fine dust collected on the collection surface downward to the bottom of the chamber,
The damper is
Upper and lower portions are open for the inflow and flow of train wind, and a plurality of train wind inlets are stacked in the form of a truncated cone with the width of the lower part larger than the width of the upper part,
The plurality of train wind inlets,
The upper part of the uppermost wind inlet part and the lower part of the wind inlet part of the lowermost part are closed,
When the wind winds collide with the outer circumference of the side, the wind wind inlet parts other than the uppermost wind inlet part move the wind wind upward so that the wind wind flows into the lower part of the wind inlet part except for the lowermost wind inlet part,
Light-scattering fine dust measurement, characterized in that the rest of the train wind inlet except for the train wind inlet at the bottom moves the train wind sideways when the train wind introduced from the bottom collides with the inner periphery of the side to induce the train wind to flow toward the centrifugal dust collector. Device. delete According to claim 1,
The light scattering meter,
main body;
an inlet pipe connected to the main body and penetrating one or more through-holes formed in the collecting means so that the train wind containing some of the fine dust is introduced into the main body;
a discharge pipe connected to the main body and discharging the train wind containing some of the fine dust, the concentration of which has been measured, from the main body;
a light emitting unit for irradiating laser light toward the train wind containing some fine dust introduced into the main body;
a detection unit for detecting scattered light scattered from the train wind including some of the fine dust by the laser light;
a measurement unit for measuring a concentration value of some fine dust by analyzing the scattered light detected by the detection unit; and
Light scattering type fine dust measuring device comprising a; mirror unit that is detachable from the mirror groove of the main body and reflects the scattered light toward the detection unit. According to claim 1,
The collector rotating part,
When the measurement of the concentration of some of the fine dust from the light scattering meter is completed, the collecting surface is rotated to induce fine dust falling downward from the collecting surface to be discharged through a fine dust outlet formed at the bottom of the chamber. Characterized in that Light scattering type fine dust measuring device. delete delete According to claim 1,
The plurality of train wind inlets,
Light scattering type fine dust measuring device, characterized in that a mesh filter is provided on the top of the remaining train wind inlet except for the uppermost train wind inlet to remove the foreign matter from the train wind. In the light scattering fine dust measuring device,
chamber;
a damper provided at an upper part of the chamber to inflow or block the inflow of the train wind containing fine dust and foreign substances having particles larger than the fine dust, and to remove the foreign substances when the train wind is introduced;
a centrifugal force collector provided inside the chamber and separating the fine dust from the train wind by a centrifugal force by downward screwing the train wind passing through the damper;
A collector provided on the lower side of the centrifugal dust collector and disposed so that the collecting surface of the collecting means for collecting the fine dust falling downward from the centrifugal dust collector after being separated from the train wind faces the lower part of the centrifugal dust collector;
When some of the fine dust falling downward toward the collecting surface is introduced along with the train wind discharged to the lower side of the centrifugal dust collector, the concentration of the some fine dust is measured based on the scattered light of the train wind containing the some fine dust. a light scattering meter; and
Including; a collector rotation unit having a rotation shaft for rotating the collection surface and a motor for driving the rotation shaft in order to drop the fine dust collected on the collection surface downward to the bottom of the chamber,
The centrifugal force collector,
a train wind turning unit provided below the damper and rotating a plurality of blades tilted at an angle for downward screw movement of the train wind discharged to the lower side of the damper; and
It is provided on the lower side of the train wind turning part, but the upper and lower parts are open, and the width of the lower part is greater than the width of the upper part so that the fine dust separated from the train wind which is screwed downward while passing through the train wind turning part falls downward toward the collector along the inner wall. Light scattering type fine dust measuring device comprising a; hopper formed small.

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