JPH0214653B2 - - Google Patents
Info
- Publication number
- JPH0214653B2 JPH0214653B2 JP2587983A JP2587983A JPH0214653B2 JP H0214653 B2 JPH0214653 B2 JP H0214653B2 JP 2587983 A JP2587983 A JP 2587983A JP 2587983 A JP2587983 A JP 2587983A JP H0214653 B2 JPH0214653 B2 JP H0214653B2
- Authority
- JP
- Japan
- Prior art keywords
- dust
- sample gas
- tape
- nozzle
- nozzles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000428 dust Substances 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N2001/222—Other features
- G01N2001/2223—Other features aerosol sampling devices
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Description
【発明の詳細な説明】
本発明は、ダスト粒径分布用試料採取装置に関
するものであつて、特に捕集試料を一定時間ごと
に連続的に採取して、これを化学分析に供するこ
とにより粒径別の元素組成の時間別の変化が求め
られるようにしたものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sample collection device for dust particle size distribution. This allows the time-dependent changes in elemental composition by diameter to be determined.
従来、ダストの粒径分布測定器として、いわゆ
るカスケードインパクターが最も普通に知られて
いる。このものは第１図に示すように、多数の套
管イ…を蝶ネジで締付けて順次接続し、上端の套
管に試料ガス導入口ロ、下端の套管に吸引口ハを
有するカバーニを連結し、各套管に固定されたノ
ズルホ…の噴出口に浅容器状のダスト捕集器ヘ…
を、各ノズル噴出口の内径及び噴出口とダスト捕
集器との間隔を下方に向うものほど小さく形成し
て対向配設した構造となつている。 Conventionally, the so-called cascade impactor is the most commonly known dust particle size distribution measuring instrument. As shown in Figure 1, a large number of cannula tubes are connected in sequence by tightening them with thumbscrews, and a cavanie is installed, which has a sample gas inlet port on the upper end of the cannula and a suction port on the lower end of the cannula. A shallow container-shaped dust collector is connected to the spout of the nozzle hole that is connected and fixed to each cannula.
The inner diameter of each nozzle spout and the distance between the nozzle and the dust collector are made smaller as they go downward, and the nozzles are disposed facing each other.
この装置は、吸引口ハを真空ポンプに接続して
導入口ロから入つた試料ガスを順次ノズルから噴
出させ、これを各ダスト捕集器の上面に吹きつけ
た後、蝶ネジをゆるめて各套管ごとに分解し、各
ダスト捕集器ヘ…の上面に堆積したダストを秤量
して、その粒径分布を測定するものであるが、こ
の装置で単位時間ごとに捕集試料を得るにはその
都度、全体の分解、組立を繰り返す必要がある実
用的に不便である。 In this device, the suction port C is connected to a vacuum pump, and the sample gas that enters the inlet port B is sequentially ejected from the nozzle and sprayed onto the top surface of each dust collector, and then the thumbscrews are loosened and each The particle size distribution is measured by disassembling each cannula and weighing the dust deposited on the top surface of each dust collector. This is practically inconvenient as it requires repeating the entire disassembly and assembly each time.
これに対し、本発明は各ノズルに対応するダス
ト捕集器をそれぞれ一連の移動付着面に形成して
単位時間ごとのダスト捕集が連続的に行われるよ
うに構成したものであつて、本発明の実施例を図
面について説明すると、第２図Ａに示すように、
制御箱１の上面に数個の短筒状の套体２…を順次
積み重ね、各套体２に設けた仕切板３…を介して
内部を上下数段に区画された筒室４を形成すると
共に、各仕切板３…に透孔を設けてこれに漏斗状
のノズル５を各取付し、かつ各套体２のつぎ目に
当る部分に左右スリツト６，６をその口縁に封止
膜７を設けて対設し、さらに筒室４の上端に密閉
カバー８を接続し、その外周面に各試料ガス導入
口９を設け、また筒室４の底部には制御箱１内の
真空ポンプ（図示せず）に連なるフイルターホル
ダからなる試料ガス吸引口１０が形成されてい
る。 In contrast, the present invention is configured such that dust collectors corresponding to each nozzle are formed on a series of moving adhesion surfaces so that dust collection is continuously performed per unit time. An embodiment of the invention will be described with reference to the drawings. As shown in FIG. 2A,
Several short cylindrical housings 2 are stacked one after another on the top surface of the control box 1, forming a cylinder chamber 4 whose interior is divided into several upper and lower stages via partition plates 3 provided on each housing 2. At the same time, a through hole is provided in each partition plate 3, to which a funnel-shaped nozzle 5 is attached, and left and right slits 6, 6 are provided at the seams of each mantle 2, and a sealing film is attached to the edge of the opening. Further, a sealing cover 8 is connected to the upper end of the cylinder chamber 4, and each sample gas inlet 9 is provided on the outer peripheral surface of the cylinder chamber 4, and a vacuum pump in the control box 1 is installed at the bottom of the cylinder chamber 4. A sample gas suction port 10 consisting of a filter holder (not shown) is formed.
制御箱１の上面には上記筒室４を挾んで左右カ
バー１２，１２が立設され、その一方にテープ収
容ローラー１３…、他方にテープ巻取ローラ１４
…が数段に軸設され、テープ巻取ローラ１４…は
制御箱１内の駆動装置に連なる駆動軸１５に串通
した歯車と直角に噛み合う歯車を介して回転され
るようになつている。これらテープ収容ローラー
１３…、テープ巻取ローラー１４…には、それぞ
れ対応する一組にわたつて、上面を付着面とする
テープ１６…が数段に張装され、これらテープ１
６…の中間部分は左右スリツト６，６を抜けて筒
室４内を横切り、ノズル５…からのダストを上面
付着面に受けるようになつている。 Left and right covers 12, 12 are erected on the upper surface of the control box 1, sandwiching the cylinder chamber 4, with tape storage rollers 13 on one side and tape winding rollers 14 on the other side.
... are installed in several stages, and the tape winding rollers 14 are rotated via gears meshing at right angles with gears threaded through a drive shaft 15 connected to a drive device in the control box 1. These tape storage rollers 13... and tape take-up rollers 14... are stretched in several stages with tapes 16... whose upper surfaces are the adhesion surfaces, respectively, over a set of corresponding ones.
The intermediate portions of the nozzles 5 pass through the left and right slits 6, 6 and cross the inside of the cylinder chamber 4, and receive the dust from the nozzles 5 on the upper adhesion surface.
第２図Ｂは、上記装置の変形例を示し、この場
合は筒室４を広幅に作ると共に、内部を縦方向の
仕切り壁１７で区画して一方にノズル５…及びテ
ープ収容ローラ１３…を数段に設け、また他方に
テープ巻取ローラ１４…を配設し、これらローラ
ーにわたつて仕切り壁１７に設けたスリツト６を
通してテープ１６…を張装してある。各部の符号
は第２図Ａと同じ符号で示されている。 FIG. 2B shows a modification of the above device. In this case, the cylindrical chamber 4 is made wide, and the interior is divided by a vertical partition wall 17, and the nozzles 5 and tape storage rollers 13 are placed on one side. A tape winding roller 14 is provided on the other end, and a tape 16 is stretched across these rollers through a slit 6 provided in a partition wall 17. Each part is indicated by the same reference numeral as in FIG. 2A.
上記第２図Ａ，Ｂの構成により、密閉カバー８
の外周面に配設された各試料ガス導入口９…に供
給された試料ガスは、順次ノズル５…を通過して
テープ１６…の上面に含有ダストを吹きつけて堆
積付着させ、試料ガス吸引口１０に吸引されるの
であり、テープ巻取ローラー１４…を低速で回転
して巻きとることにより、各テープ１６…に時間
に応じた堆積ダストが得られ、所要時間巻取を行
つた後、各テープ１６…を取りはずして各堆積ダ
ストの時間別粒径分布を測定することができる。 With the configuration shown in Figure 2 A and B above, the airtight cover 8
The sample gas supplied to each sample gas inlet 9 arranged on the outer circumferential surface of the tape 16 sequentially passes through the nozzle 5 and sprays the contained dust onto the upper surface of the tape 16 to deposit it, and the sample gas is sucked. By rotating and winding the tape winding rollers 14 at low speed, accumulated dust is obtained on each tape 16 according to the time, and after winding for the required time, Each tape 16... can be removed to measure the time-based particle size distribution of each deposited dust.
次に、第３図は本発明の他の実施例を示す。即
ち、第３図Ａ，Ｂに示すように、全体は数個の短
筒状の套体２２…を横方向に順次接続して内部に
仕切壁２３…を有する筒室２４に形成され、この
筒室２４の上面にノズル２５、透孔２６が交互に
開設されている。これらノズル２５、透孔２６の
上方には箱体をかぶせて通気室２７が形成され、
この通気室２７の一端上方に密閉カバー２８を設
けてその周面に試料ガス導入口２９が設けられて
いる。また通気室２７の他端は別に設けた真空ポ
ンプに接続すべき試料ガス吸引口３０となつてい
る。 Next, FIG. 3 shows another embodiment of the present invention. That is, as shown in FIGS. 3A and 3B, the whole is formed into a cylindrical chamber 24 having partition walls 23 inside by connecting several short cylindrical casings 22 laterally one after another. Nozzles 25 and through holes 26 are alternately provided on the upper surface of the cylinder chamber 24. A ventilation chamber 27 is formed by covering the nozzle 25 and the through hole 26 with a box.
A sealing cover 28 is provided above one end of the ventilation chamber 27, and a sample gas inlet 29 is provided on the circumferential surface of the sealing cover 28. The other end of the ventilation chamber 27 serves as a sample gas suction port 30 to be connected to a separately provided vacuum pump.
筒室２４内には、その中心を通つて１本の回転
軸３１が各套体２２ごとに分割可能として貫設さ
れ、一端に接続したモーター３２により低速回転
されると共に、バネ３３により常に一方に押送さ
れている。この回転軸３１には一端につば３４を
有するドラム３５…が串通取付され、前記バネ３
３によりつば３４を仕切壁２３に押しつけ気密状
態を保持している。上記ドラム３５…は周面をそ
れぞれノズル２５…の直下に位置しており、周面
をダストの堆積付着面としている。 A rotary shaft 31 is inserted through the center of the cylinder chamber 24 so as to be separable for each mantle 22, and is rotated at a low speed by a motor 32 connected to one end, and always rotated by a spring 33. being pushed to. A drum 35 having a collar 34 at one end is attached to the rotating shaft 31, and the spring 3
3 presses the collar 34 against the partition wall 23 to maintain an airtight state. The drums 35 have their circumferential surfaces located directly below the nozzles 25, respectively, and serve as surfaces on which dust accumulates and adheres.
上記第３図の装置はこの構成により、密閉カバ
ー２８に配設された試料ガス導入口２９から供給
された試料ガスは、ノズル２５からドラム３５の
周面に吹きつけられた後、透孔２６から通気室２
７に抜け、次のノズル２５の順序を経て進み、排
ガス吸引口３０に引き出される。こうして各筒体
２２…内のドラム３５にはそれぞれダストが付着
される。そして回転軸３１が一回転した後、各ド
ラム３５…を取りはずして各ダストの時間別粒径
分布を測定することができる。なお、このドラム
３５…の周面には、前記テープ１６…と同じく予
め接着性塗膜を施して付着したダストが落下しな
いようにしておく。 With this configuration, the apparatus shown in FIG. From ventilation room 2
7, passes through the next nozzle 25, and is drawn out to the exhaust gas suction port 30. In this way, dust is attached to each drum 35 within each cylinder 22. After the rotating shaft 31 has rotated once, each drum 35 can be removed and the time-based particle size distribution of each dust can be measured. Note that, like the tapes 16, an adhesive coating film is previously applied to the circumferential surface of the drums 35 to prevent attached dust from falling off.
以上説明したように、本発明においては、従来
の装置におけるダスト捕集器が単一固定面であつ
たのを特に連続的に移動する付着面に形成したた
め、ダストの粒径分布を、さらに時間別に細分す
ることができ、しかも測定を終つた各付着面は、
試料として相互の比較並びに保存に便利である等
多くの利点がある。 As explained above, in the present invention, the dust collector is formed on a continuously moving adhesion surface instead of a single fixed surface in the conventional device, so that the particle size distribution of dust can be further improved over time. Each attachment surface that can be subdivided separately and that has been measured is
It has many advantages such as being convenient for comparison and storage as a sample.
第１図は従来の装置の断面正面図、第２図Ａは
本発明の装置の断面正面図、第２図Ｂは第２図Ａ
の他の一例を示す正面断面図、第３図Ａは本発明
の他の実施例を示す正面断面図、第３図Ｂは第３
図Ａの−線における断面側面図である。
１……制御箱、２，２２……套体、４，２４…
…筒室、５，２５……ノズル、６……スリツト、
９，２９……試料導入口、１０，３０……試料ガ
ス吸引口、１３……テープ収容ローラー、１４…
…テープ巻取ローラー、１５……駆動軸、１６…
…テープ、３１……回転軸、３５……ドラム。
FIG. 1 is a cross-sectional front view of a conventional device, FIG. 2 A is a cross-sectional front view of the device of the present invention, and FIG. 2 B is a cross-sectional front view of the device of the present invention.
FIG. 3A is a front sectional view showing another example of the present invention, FIG. 3B is a front sectional view showing another embodiment of the present invention, and FIG.
FIG. 3 is a cross-sectional side view taken along the - line in FIG. A; 1... Control box, 2, 22... Mantle, 4, 24...
... cylinder chamber, 5, 25 ... nozzle, 6 ... slit,
9, 29... Sample introduction port, 10, 30... Sample gas suction port, 13... Tape storage roller, 14...
...Tape winding roller, 15... Drive shaft, 16...
...Tape, 31...Rotating shaft, 35...Drum.
Claims (1)
料ガス導入口、他端に試料ガス吸引口を有し、か
つ内部を区画してそれぞれ相互に連通するノズル
を各設けた筒室を形成すると共に、上記区画内に
はノズルの下方に位置して別に制御機構を介して
駆動されるテープ表面又は別に制御機構を介して
ドラム軸芯のまわりを回転するドラム周面の一連
の移動面からなるダスト付着面を臨ませてなるダ
スト粒径分布用試料採取装置。1 A cylindrical chamber in which several sleeves are separably connected, each having a sample gas inlet at one end, a sample gas suction port at the other end, and nozzles that partition the interior and communicate with each other. and a series of movements of the tape surface located below the nozzle and driven via a separate control mechanism or the drum circumferential surface rotating around the drum axis via a separate control mechanism. A sampling device for dust particle size distribution that faces the dust adhering surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2587983A JPS59151037A (en) | 1983-02-18 | 1983-02-18 | Sampling device for measuring grain size distribution in dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2587983A JPS59151037A (en) | 1983-02-18 | 1983-02-18 | Sampling device for measuring grain size distribution in dust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59151037A JPS59151037A (en) | 1984-08-29 |
| JPH0214653B2 true JPH0214653B2 (en) | 1990-04-09 |
Family
ID=12178063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2587983A Granted JPS59151037A (en) | 1983-02-18 | 1983-02-18 | Sampling device for measuring grain size distribution in dust |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59151037A (en) |
-
1983
- 1983-02-18 JP JP2587983A patent/JPS59151037A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59151037A (en) | 1984-08-29 |
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