KR102572911B1 - A fine dust measuring device having an inlet separation structure - Google Patents

Abstract

The present invention relates to a fine dust measuring device having an inlet separation structure. Fine dust measuring device according to a preferred embodiment of the present invention includes an upper inlet 100; It includes a lower inlet 400 located below the upper inlet 100 and detachably coupled to the upper inlet 100 .

Description

A fine dust measuring device having an inlet separation structure}

The present invention relates to a fine dust measuring device.

As a method for measuring fine dust, there are a beta ray method, a weight method, and a light scattering method. The beta radiation method can measure the concentration of fine dust by irradiating beta rays on the top of a filter where fine dust is adsorbed and using the detected amount of beta rays irradiated from the bottom of the filter.

The beta wire method has a separation device installed in the air inlet, It removes more than 10 particles and sucks air into the filter through the setting flow. The following dust can be supplied. Separation devices include a cyclone method and an impactor method according to the shape of the particle size separation structure. In the beta-ray method, the particle size filtered by the separator can vary.

The beta ray method can be applied to the field as a single device or in the form of a fusion of the beta ray method and the light scattering method. As a special form, the beta method can be used in a form that has a measurement function and a function of providing a reference value for correction of a low-specification measurement value at the same time while interworking with a low-specification (eg, light scattering) measurement method through a network. .

1. Korea Patent No. 1278289

An object of the present invention is to provide a fine dust measuring device capable of increasing the accuracy of measurement.

An object of the present invention is to provide a fine dust measuring device for easy maintenance work.

Fine dust measuring device according to a preferred embodiment of the present invention includes an upper inlet 100; It includes a lower inlet 400 located below the upper inlet 100 and detachably coupled to the upper inlet 100 .

Here, the inner surface of the lower inlet 400 may adhere to the outer surface of the upper inlet 100 .

The fine dust measuring device further includes a fixing part 200, the fixing part 200 is fixed to the fixing frame 1000, and the upper inlet 100 is inserted into and fixed to the fixing part 200. It can be.

In addition, the upper inlet 100 includes a holding part 110 protruding to the side, and the lower surface of the holding part 110 may be mounted on the upper surface of the fixing part 200 .

In addition, the fixing part 220 includes a first fixing part 210 located at the front and a second fixing part 220 located at the rear, and the first fixing part 210 and the second fixing part 220 is fixed in close contact, and the upper inlet 100 may be inserted into a cylindrical space formed inside by the first fixing part 210 and the second fixing part 220 that are in close contact with each other.

In addition, the lower inlet 400 may be detachably fixed to the moving unit 300 located below the fixing unit 200 .

The present invention can prevent contamination of the beta-ray generating module and reduce the leakage of beta-rays, thereby increasing the accuracy of measurement and extending the period during which the accuracy is maintained.

In the present invention, maintenance work can be very easy through the separation structure of the upper inlet and the lower inlet.

Figure 1a is a cross-sectional view of a fine dust measuring device according to a preferred embodiment of the present invention viewed from the front.
Figure 1b is a cross-sectional view of a fine dust measuring device according to a preferred embodiment of the present invention viewed from the side.
FIG. 2 is an enlarged view of area a of FIG. 1 .
3 is a plan view of the lower inlet of FIG. 1;
Figure 4a is a cross-sectional view viewed from the front for explaining the collecting operation of the fine dust measuring device of FIG.
Figure 4b is a cross-sectional view viewed from the side for explaining the collecting operation of the fine dust measuring device of FIG.
Figure 5a is a cross-sectional view viewed from the front for explaining a beta-ray source insertion operation of the fine dust measuring device of FIG.
Figure 5b is a cross-sectional view viewed from the side for explaining the beta-ray source insertion operation of the fine dust measuring device of Figure 1.
Figure 6a is a cross-sectional view viewed from the front for explaining the fine dust measuring operation of the fine dust measuring device of FIG.
6B is a cross-sectional view viewed from the side for explaining a fine dust measuring operation of the fine dust measuring device of FIG. 1 .
7a to 7e are front and side views for explaining a disassembly process for maintenance and repair of the fine dust measuring device of FIG. 1 .

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

Like reference numerals have been used for like elements throughout the description of each figure. In describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention.

The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited items.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention.

Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, it should not be interpreted in an ideal or excessively formal meaning. don't

Hereinafter, a fine dust measuring device according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 7 . Hereinafter, descriptions of conventionally known matters are omitted or simplified to clarify the gist of the present invention.

Referring to FIG. 1 , the fine dust measuring device may include an upper inlet 100, a fixed part 200, a moving part 300, a lower inlet 400, a housing 30, and a beta ray generating module 43. there is.

The upper inlet 100 may include air passages vertically penetrating the inside. The upper inlet 100 may have a cylindrical shape extending from top to bottom. The upper inlet 100 may include a mounting portion 110 protruding to the side. The upper inlet 100 may extend to the inside of the lower inlet 400 . The upper inlet 100 may be inserted into and fixed to the fixing part 200 . At this time, the lower surface of the mounting part 110 may be mounted on the upper surface of the fixing part 200 . A separator (not shown) is installed above the upper inlet 100 to filter fine dust into a preset particle size.

The fixing part 200 may have a hollow shape that is open vertically. An inner side of the fixing part 200 may adhere to an outer surface of the upper inlet 100 . The inside of the fixing part 200 may be penetrated by the upper inlet 100 . The fixing part 200 may be fixed to the fixing frame 1000 (see FIG. 4). The shape of the fixed frame 1000 may be unlimited as long as it is a medium capable of fixing the position of the fixing unit 200 regardless of the movement of the moving unit 300 .

The fixing part 200 may include a first fixing part 210 (see FIG. 7A) positioned at the front and a second fixing part 220 (see FIG. 7A) positioned at the rear. The first fixing part 210 and the second fixing part 220 may come into close contact with each other and be fixed in close contact with each other by a fastening screw P passing through the fastening hole 201 . The first fixing part 210 and the second fixing part 220 have a shape that divides the fixing part 200 into a first side and a second side, and may have a left and right symmetrical structure. The upper inlet 100 may be inserted into a cylindrical space formed inside of the first fixing part 210 and the second fixing part 220 that are in close contact with each other.

The fixing part 200 may include a first lower extension part 230 extending downward.

An inner side of the first lower extension part 230 may be spaced apart from an outer surface of the upper inlet 100 . A guide hole 231 extending from the upper part to the lower part may be formed in the first lower extension part 230 .

The moving unit 300 may be installed on the fixing unit 200 to be movable up and down.

The moving unit 300 may include an inner space vertically penetrated by the upper inlet 100 . The moving part 300 may include an upper extension part 320 extending upward from the upper part of the moving part 300 . An inner side of the upper extension part 320 may be spaced apart from an outer surface of the upper inlet 100 . A spring 330 may be inserted between the upper extension part 320 and the outer surface of the upper inlet 100 . The spring 330 may be a cylindrical compression spring. The lower end of the spring 330 is supported by a surface facing the lower end of the spring 330 in the moving part 300, and the upper end of the spring 330 is opposed to the upper end of the spring 330 in the fixed part 200. It can be supported by a face. The spring 330 extends between the upper extension part 320 and the outer surface of the upper inlet 100 and between the inner surface of the first lower extension part 230 and the outer surface of the upper inlet 100, and the upper inlet 100 extends on the inside. ) can be accommodated.

An outer surface of the upper extension part 320 may be located inside the first lower extension part 230 . An outer surface of the upper extension part 320 may come into close contact with an inner surface of the first lower extension part 230 . The upper extension part 320 may move up and down in a space between the inner surface of the first lower extension part 230 and the outer surface of the upper inlet 100 . In this case, the upper extension part 320 may be guided by the inner surface of the first lower extension part 230 .

The moving unit 300 may include a guide rod 310 extending upward of the moving unit 300 . The guide rod 310 may be inserted into the guide hole 231 . The guide rod 310 may move up and down while being guided by the guide hole 231 .

The moving part 300 may include a third lower extension part 350 extending downward. The third lower extension part 350 may include a fastening hole 351 penetrating from the first side to the second side. The fastener 352 may be inserted into and fixed to the fastening hole 351 . The fastening part 352 may have a contact part 352a provided at one end. The contact portion 352a may adhere to the outer surface of the lower inlet 400 to stably fix the lower inlet 400 to the moving unit 300 .

The moving part 300 may include a second lower extension part 340 extending downward. The second lower extension part 340 may be located inside the third lower extension part 350 .

The moving unit 300 may move up and down by a separate driving means (not shown). At this time, the lower inlet 400 fixed to the moving unit 300 may also move up and down along the moving unit 300 . When the movable unit 300 moves up and down, the movable unit 300 moves the guide hole 230 into which the guide rod 310 is inserted and the first lower extension 230 to which the outer surface of the upper extension 320 is in close contact. can be guided by the inner surface of

The lower inlet 400 may be detachably fixed to the moving unit 300 located below the fixing unit 200 .

The lower inlet 400 may have a groove-shaped fastening part 420 (see FIG. 3 ) in an upper outer region. The second lower extension part 340 may be inserted into the fastening part 420 . The second lower extension 340 may have a fastening hole 360 at a position corresponding to the fastening hole 430 of the lower inlet 400 . The lower inlet 400 is connected to the second lower extension 340 by a fastening means (not shown) penetrating the fastening hole 360 of the second extension 340 and the fastening hole 430 of the lower inlet 400. It can be detachably fixed to.

A lower end of the upper inlet 100 may be located inside the lower inlet 400 . An inner surface of the lower inlet 400 facing the upper inlet 100 may come into close contact with the upper inlet 100 . An O-ring 2 may be provided between the inner surface of the lower inlet 400 and the outer surface of the upper inlet 100 . An inclined portion 410 may be provided in an inner region of the lower inlet 400 located below the lower end of the upper inlet 100 . The inclined portion 410 may have a shape in which the radius gradually decreases as the radius goes downward. The inclined portion 410 may extend to a lower end of the lower inlet 400 . The inclined portion 410 may converge air discharged downward through the upper inlet 100 and discharge the air toward the introduction portion 35 (see FIG. 5) located below the lower inlet 400 . An open area under the lower inlet 400 may face the introduction part 35 . The open area under the lower inlet 400 may have a smaller radius than the inlet 35 , and the open area under the lower inlet 400 may be located inside the inlet 35 .

A pressing portion 440 (see FIG. 2 ) protruding downward may be provided on a lower surface of the lower inlet 400 . The pressing part 440 is formed in a disk shape, and an inner circumferential surface of the pressing part 440 may be located inside the introduction part 35 . The pressing unit 440 presses the upper surface of the film 50 (see FIG. 4) with the elastic force of the spring 330 while the fine dust measuring device operates in the fine dust collection mode to secure the film 50 to the housing 30. It can be attached to the upper surface. The compression unit 440 maintains airtightness between the compression unit 440 and the film 50 so that the air passing through the lower inlet 400 and the inlet 35 during the fine dust collecting operation passes between the compression unit 440 and the film ( 50) and between the upper surface of the film 50 and the housing 30 can be prevented from leaking out.

While the fine dust measuring device operates in the fine dust measuring mode, the lower inlet 400 may be spaced apart from the film 50, and the beta ray generating module 43 may be located between the lower inlet 400 and the film 50. there is.

The film 50 may be positioned between the lower part of the lower inlet 400 and the housing 30 . The film 50 may be transported from the first side to the second side while being slid by the first roller 10 located on the first side of the housing and the second roller 20 located on the second side of the housing. The film 50 extends from the first side to the second side, and the film 50 may cover the entire upper portion of the introduction part 35 .

The housing 30 may have an accommodation space inside. The housing 30 may include an introduction part 35 formed by vertically penetrating the upper surface.

A beta ray detector 31 for detecting beta ray irradiated through the introduction part 35 may be provided in the inner receiving space of the housing 30 .

An outlet 34 may be provided on one side of the housing 30 . The housing 30 may include a passage 33 through which air may move from the inlet 35 to the outlet 34 .

The trailer actuator 41 may be provided outside the housing 30 . A trailer 42 may be mounted on the trailer 41 . A beta-ray generating module 43 may be mounted on the trailer 42 . The beta-ray generating module 43 may emit beta-rays downward. When the trailer actuator 41 drives the trailer 42 left and right, the beta-ray generating module 43 can move between the outside of the housing 30 and the introduction part 35 . When the fine dust measuring device operates in the fine dust collection mode, the beta ray generating module 43 is located outside the housing 30, and when the fine dust measuring device operates in the fine dust measuring mode, the beta ray generating module 43 ) may be opposite to the inlet 35.

As described above, since the upper inlet 100 and the lower inlet 400, which is the lower part of the upper inlet 100, are detachably coupled, maintenance can be facilitated.

Hereinafter, with reference to FIGS. 1 and 4 to 6, the overall operation of the fine dust measuring device having the above structure will be described. In order to clarify the gist, some components of FIG. 1 are omitted or simply illustrated in FIGS. 4 to 6 .

1. Operation in collection mode of fine dust measuring device

Referring to FIG. 4 , in the collecting mode, the lower inlet 400 may move downward. Also, the pressing unit 440 may press the upper surface of the film 50 downward. As a result, the pressing unit 400 and the film 50 may come into close contact with each other, and the film 50 and the upper surface of the housing 30 may come into close contact with each other. At this time, the film 50 and the housing 30 may be tightly adhered to each other by the elastic force of the spring 330 . It is possible to prevent the pressing unit 440 from damaging the film 50 by excessively lowering the moving unit 300 by the driving means for driving the moving unit 300 by making the force necessary for close contact an elastic force. It may not be necessary to drive the driving means very precisely so that the pressing part 400 presses the film 50 accurately. The lower inlet 400 may move downward by the lowering of the moving unit 300 in which the lower inlet 400 is fixedly installed. The vertical movement of the moving unit 300 may be handled by a separate driving unit (not shown).

In this state, air may be introduced from the top to the bottom through the inner space of the upper inlet 100 . The air passing through the upper inlet 100 is converged toward the center by the inclined portion 410 of the lower inlet 400, and the converged air passes through the film 50, the introduction portion 35, and the flow path 33 in that order. , can be discharged through the outlet 34.

In the collection mode, the beta-ray generating module 43 may be located outside the housing 30 . Accordingly, it is possible to prevent the beta-ray generating module 43 from being contaminated by fine dust when fine dust is collected. In addition, it is possible to reduce the occurrence of measurement errors due to contamination of the beta-ray generation module 43 .

2. Operation in beta-ray source input mode and fine dust measurement mode of the fine dust measuring device

Referring to FIG. 5 , when the collecting mode is completed, the lower inlet 400 may move upward to be spaced apart from the film 50 . At this time, the lower inlet 400 may move upward by moving the moving unit 300 to which the lower inlet 400 is fixedly installed moves upward.

In addition, the beta-ray generating module 43 may move from the outside of the housing 30 to the introduction part 35 so as to face the introduction part 35 between the lower end of the lower inlet 40 and the film 50 . At this time, the trailer actuator 41 may start the trailer 42 to move the beta-ray generating module 43 from the outside of the housing 30 to the introduction part 35. At this time, the lower part of the beta-ray generating module 43 from which beta-rays are emitted may be spaced apart from the upper surface of the film 50 at a predetermined interval.

In the state shown in FIG. 5 , the beta-ray generation module 43 emits beta-rays, and the beta-ray detector 31 can detect the beta-rays that have passed through the film 50 and the introduction part 35 . The beta ray detector 31 may transmit a signal corresponding to the detected beta ray to the outside through the signal line L.

Alternatively, as shown in FIG. 6 , the fine dust measurement mode may be additionally performed in a state in which the lower portion of the lower inlet 400 descends to contact the beta-ray generation module 43 in the fine dust measurement mode. At this time, the lower surface of the beta-ray generating module 43 may be pressed by the pressing part 440 and adhered to the upper surface of the film 50 . At this time, in a state where the lower part of the lower inlet 400 descends to come into contact with the beta-ray generating module 43, the beta-ray generating module 43 emits beta-rays, and the emitted beta-rays pass through the film 50 and the introduction part 35. The beta ray detector 31 may detect the beta ray. In the fine dust measurement mode, the operation shown in FIG. 6 is an optional item that can be omitted or added. In addition, the fine dust measurement mode may be performed in the state of FIG. 5 . However, by minimizing leaked beta rays through the same method as in FIG. 6, the measurement precision of the fine dust measuring device can be very high.

When the fine dust measurement mode is completed, the beta ray generating module 43 may return to the outside of the housing 30 as shown in FIG. 4 .

Hereinafter, a disassembly operation for maintenance of the fine dust measuring device will be described with reference to FIGS. 1 and 7A to 7E.

Referring to FIG. 7A , the lower inlet 400 may be moved upward and stopped. At this time, it is preferable that the lower inlet 400 is moved to the uppermost part of the vertical movement section of the lower inlet 400 to facilitate disassembly.

Referring to FIGS. 7A and 7B , the first fixing part 210 may be separated from the second fixing part 220 after removing the fastening screw P located on the front of the first fixing part 210 . At this time, the second fixing part 220 may be in a fixed state to the fixing frame 1000 .

Referring to FIG. 7C , in a state where the first fixing part 210 is separated from the second fixing part 220, the upper inlet 100 can be separated from the fixing part 200 by pulling the upper inlet 100 upward. can

Referring to FIGS. 7C and 7D , the lower inlet 400 may be separated from the moving unit 300 after removing the fastening means (not shown) on the lower inlet 400 side.

As a result, as shown in FIG. 7E , the upper inlet 100 and the lower inlet 400 to be cleaned may be separately separated.

The lower inlet 400 having an inclined portion 410 to easily collect fine dust in the filter is not easy to clean. In addition, the inclined portion 410 is an area where fine dust is easily accumulated. Therefore, by manufacturing the upper inlet 100 and the lower inlet 400 in a separate type and manufacturing the lower inlet 400 at a low depth, washing of the lower inlet 400 where fine dust is well accumulated The work can be very easy. Of course, since the depth of the top inlet 100 is also low due to the separable type, the cleaning operation of the top inlet 100 can also be facilitated. And, by assembling the upper inlet 100 to be located inside the lower inlet 400, the air passing through the upper inlet 100 accumulates fine dust in the area where the upper inlet 100 and the lower inlet 400 come into contact. problem may not arise.

100: upper inlet
110: mounting part
200: fixed part
201: fastener
210: first fixing part
220: second fixing part
230: first lower extension
231: guide ball
300: moving part
310: guide rod
320: upper extension
330: spring
340: second lower extension
350: third lower extension
351: fastener
532: fastening part
352a: close contact
360: fastener
400: lower inlet
410: inclined portion
420: fastening part
430: fastener
440: compression unit
2 : O-ring
10: first roller
20: 2nd roller
30: housing
31: Beta ray detector
33: Euro
34: outlet
35: Introduction
L: signal line
41: trailer actuator
42: Trailer
43: beta-ray generation module
1000: fixed frame

Claims (6)

A fixing part 200 fixed to the fixing frame 1000;
an upper inlet 100 inserted into and fixed to the fixing part 200, having an outer surface in close contact with the inside of the fixing part, and including an air passage vertically penetrating the inside;
a moving part 300 installed below the fixing part 200 to be movable up and down, and having an inner space vertically penetrated by the upper inlet 100; and
It is detachably fixed to the moving part 300, and the lower end of the upper inlet 100 is located on the inner side so that the outer surface of the upper inlet 100 is in close contact with the inner surface, and is detachable from the upper inlet 100. Including; lower inlet 400 coupled;
The lower inlet 400 is a fine dust measuring device, characterized in that for discharging the air introduced by the upper inlet 100 to an open area formed in the lower part. delete delete According to claim 1,
The upper inlet 100 includes a holding portion 110 protruding to the side,
The fine dust measuring device, characterized in that the lower surface of the mounting portion 110 is mounted on the upper surface of the fixing portion (200). According to claim 1,
The fixing part 200 includes a first fixing part 210 located at the front and a second fixing part 220 located at the rear,
The first fixing part 210 and the second fixing part 220 are tightly fixed,
The fine dust measuring device, characterized in that the upper inlet (100) is inserted into the cylindrical space formed on the inside of the first fixing part (210) and the second fixing part (220) in close contact.
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