JP2001116681A - Gravitational precipitation type particle size distribution measuring device - Google Patents
Gravitational precipitation type particle size distribution measuring deviceInfo
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- JP2001116681A JP2001116681A JP29710299A JP29710299A JP2001116681A JP 2001116681 A JP2001116681 A JP 2001116681A JP 29710299 A JP29710299 A JP 29710299A JP 29710299 A JP29710299 A JP 29710299A JP 2001116681 A JP2001116681 A JP 2001116681A
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- particle size
- size distribution
- suspension
- tank
- discharge pipe
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、重力沈降式粒子径
分布測定装置に関し、例えばフライアッシュ、関東ロー
ム、シリカサンド等の種々の粉体粒子の粒子径分布を測
定せんとする粉体の懸濁液を注入する重力沈降式粒子径
分布測定装置であって、被測定粉体の懸濁液を沈降槽に
注入し、沈降筒に沈降した粉体粒子の重量を正確に測定
して物理的に意味のあるスト─クス径による粒子径分布
を得ることに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gravitational sedimentation type particle size distribution measuring apparatus, and more particularly, to a method for measuring the particle size distribution of various powder particles such as fly ash, Kanto loam, silica sand and the like. This is a gravity sedimentation type particle size distribution measuring device that injects a suspension, injects a suspension of the powder to be measured into a sedimentation tank, and accurately measures the weight of the powder particles settled in the sedimentation cylinder to physically measure the weight. The present invention relates to obtaining a particle size distribution based on a stork diameter that is significant.
【０００２】本発明が適用されるべき「粉体粒子の粒度
（粒子径）分布を得るための方法」の発明については、
本出願人により平成９年特許願第７１６８６号（特開平
10─267825号公報）として既に出願されており、本発明
は該先願発明の方法の実施に好適な重力沈降式粒子径分
布測定装置により被測定粉体懸濁液の粒子径分布を正確
に測定することに関するものである。[0002] Regarding the invention of "a method for obtaining a particle size (particle size) distribution of powder particles" to which the present invention is applied,
No. 71686/1997 (Japanese Unexamined Patent Application Publication No.
No. 10-267825), and the present invention accurately measures the particle size distribution of a powder suspension to be measured by a gravitational sedimentation type particle size distribution measuring apparatus suitable for carrying out the method of the prior application. It is about measuring.
【０００３】[0003]
【従来の技術】図５に表わす従来技術により粒子径分布
の測定を行わんとする場合、被測定粉体の懸濁液３０を
天秤３２により懸吊された沈降筒３３を収納した沈降槽
３４に注入する場合、従来は、懸濁液３０を生成した、
例えばメインタンクであるミキサケーシング３１から直
接に、又は排出管３５を介して直接沈降槽内へ無作為に
排出し、沈降筒３３と沈降槽３４とに懸濁液３０を充填
していた。その都度の懸濁液の排出終了後には、排出ラ
インにおける排出管３５の内部に懸濁液３０の被測定粉
体が沈降して残留したままになっていることもあり、そ
の結果、測定値が実際値と相違する現象が発生してい
た。2. Description of the Related Art When a particle size distribution is to be measured by the prior art shown in FIG. 5, a sedimentation tank 34 containing a sedimentation cylinder 33 in which a suspension 30 of a powder to be measured is suspended by a balance 32. Conventionally, when the suspension 30 is formed,
For example, the suspension 30 is directly discharged from the mixer casing 31 as a main tank or directly into the settling tank via the discharge pipe 35 at random, and the settling cylinder 33 and the settling tank 34 are filled with the suspension 30. After the discharge of the suspension in each case, the powder to be measured of the suspension 30 may settle and remain in the discharge pipe 35 in the discharge line. Was different from the actual value.
【０００４】また、検出皿である沈降筒３３の深さが浅
いものを使用して沈降槽３４において懸濁液３０の被測
定粉体を検出皿３３に沈降させると、沈降槽３４の区画
のない部分において検出皿３３へ懸濁液３０の被測定粉
体が沈降するときには、筒境界域では沈降粉体にボイコ
ット現象を生じて、被測定粉体が検出皿３３域以外へ流
出してしまい、その結果、測定結果が実際値と相違する
現象が発生していた。When the powder to be measured of the suspension 30 is settled in the settling tank 34 in the settling tank 34 by using a settling cylinder 33 having a small depth, which is a detecting dish, the section of the settling tank 34 is divided. When the powder to be measured of the suspension 30 is settled on the detection dish 33 in a portion where no powder is detected, a boycott phenomenon occurs in the settled powder in the cylinder boundary region, and the powder to be measured flows out of the detection dish 33 area. As a result, a phenomenon that the measurement result is different from the actual value has occurred.
【０００５】更に、この重力沈降式粒子径分布測定装置
は、他の測定装置より精度良い測定結果を得ることはで
きるけれども、極めて時間がかかるという問題点があっ
た。また、最近に頻繁に用いられてきている粒子径分布
の間接測定装置、例えばレ─ザ光式粒子径分布測定装置
では、粒子径分布を測定することは迅速に実施できるけ
れども、測定は、特定の検定用粉体を使用して、キャリ
ブレ─トした諸係数を使用して行われている。したがっ
て、被測定粉体がその検定用粉体の粒子と比べて、例え
ば、粒子の表面の色、形状、レ─ザ光反射率など
が相違している場合、測定結果は、正しい値になり得な
いと言う問題点があった。Further, although the gravity sedimentation type particle size distribution measuring device can obtain a measurement result with higher accuracy than other measuring devices, there is a problem that it takes much time. In addition, in the indirect measurement device of particle size distribution which has been frequently used recently, for example, a laser beam type particle size distribution measuring device, it is possible to quickly measure the particle size distribution, but the measurement is performed by a specific method. The calibration is performed using the calibration powder and the coefficients calibrated. Therefore, if the powder to be measured is different from the particles of the test powder, for example, in the color, shape, laser light reflectance, etc. of the surface of the particles, the measurement results will be correct. There was a problem of not getting it.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、従来の技術
のこれらの問題点を解決し、その都度の懸濁液の排出終
了後に排出管の底に残留した粉体を洗い流すために分散
液を充填したサブタンクをメインタンクに接続して設け
た重力沈降式粒子径分布測定装置を提案すること、沈降
槽における懸濁液の被測定粉体が沈降する際に沈降粉体
のボイコット現象に影響されない深さを持つ長い沈降筒
を備えた重力沈降式粒子径分布測定装置を提案するこ
と、及び、より迅速な、間接測定による粒子径分布測定
器、例えばレ─ザ光式粒子径分布測定装置の諸係数の較
正手段として重力沈降式粒子径分布測定装置を用いて迅
速かつ正確に粒子径分布を測定できる重力沈降式粒子径
分布測定装置を提案することを課題とする。SUMMARY OF THE INVENTION The present invention solves these problems of the prior art and disperses the dispersion liquid at the bottom of the discharge pipe after each discharge of the suspension. Of a gravity sedimentation type particle size distribution measuring device provided with a sub-tank filled with water connected to the main tank, which affects the boycott phenomenon of the settled powder when the measured powder of the suspension settles in the settling tank To propose a gravity sedimentation type particle size distribution measuring device having a long sedimentation cylinder having a depth not to be measured, and a particle size distribution measuring device by a more rapid indirect measurement, for example, a laser light type particle size distribution measuring device It is an object of the present invention to propose a gravity sedimentation type particle size distribution measuring device capable of quickly and accurately measuring a particle size distribution using a gravity sedimentation type particle size distribution measuring device as a means for calibrating various coefficients.
【０００７】[0007]
【課題を解決するための手段】この発明の第一課題は、
攪拌手段を備えたメインタンクから弁を介して懸濁液を
排出管経由により沈降槽に流入させ、沈降槽には天秤か
ら吊るされた検出皿である沈降筒を設けて懸濁液中の沈
降粉体粒子を検出皿に沈降させて沈降粉体粒子の重量を
測定し、メインタンクには弁を介して接続したサブタン
クを設けて、サブタンクには分散液あるいは懸濁液の一
部を充填してその都度の懸濁液のメインタンクよりの排
出終了後に弁を開放してメインタンクまたは排出管入口
に流入させ、排出管に沈降残留した粉体を洗い流すこと
を特徴とする重力沈降式粒子径分布測定装置によって解
決され、この発明の第二課題は、攪拌手段を備えたメイ
ンタンクから弁を介して懸濁液を排出管経由して沈降槽
に流入させ、沈降槽には天秤から吊るされた検出皿であ
る沈降筒を設けて懸濁液中の沈降粉体粒子を検出皿に沈
降させて沈降粉体粒子の重量を測定する際に、検出皿で
ある沈降筒の高さ（Ｈ）をその直径（Ｄ）との関係をＨ
＝０．５〜４Ｄとしてボイコット現象に影響されずに粉
体粒子を沈降させることを特徴とする重力沈降式粒子径
分布測定装置によって解決され、この発明の第三課題
は、攪拌手段を備えたメインタンクから弁を介して懸濁
液を排出管経由により沈降槽に流入させ、沈降槽には天
秤から吊るされた検出皿である沈降筒を設けて懸濁液中
の沈降粉体粒子を検出皿に沈降させて沈降粉体粒子の重
量を測定する重力沈降式粒子径分布測定装置により沈降
粉体粒子径分布を予め測定し、その結果値によって例え
ばその粉体の粒子径分布を測定するレ─ザ光式粒子径分
布測定器の諸係数を修正することを特徴とする重力沈降
式粒子径分布測定装置によって解決される。A first object of the present invention is to
The suspension is allowed to flow from the main tank equipped with a stirring means via a valve into the sedimentation tank via the discharge pipe, and the sedimentation tank is provided with a sedimentation cylinder, which is a detection dish suspended from a balance, to settle the suspension in the suspension. The powder particles settle on the detection dish and the weight of the settled powder particles is measured.The main tank is provided with a sub-tank connected via a valve, and the sub-tank is filled with a part of the dispersion or suspension. After the suspension of the suspension is discharged from the main tank in each case, the valve is opened to allow the suspension to flow into the main tank or the discharge pipe inlet, and the powder settled in the discharge pipe to be washed away, characterized by a gravity sedimentation type particle diameter. A second object of the present invention is solved by a distribution measuring device, in which a suspension is introduced from a main tank provided with a stirring means through a discharge pipe into a settling tank via a valve, and the suspension is suspended from a balance in the settling tank. With a settling cylinder, The precipitated powder particles in Nigoeki when measuring the weight of precipitated on the detection dish sedimentation powder particles, the relationship between the height of the sedimentation tube is detected dish (H) and the diameter (D) H
= 0.5 to 4D, which is solved by a gravity sedimentation type particle size distribution measuring apparatus characterized in that the powder particles are settled without being affected by the boycott phenomenon. The third object of the present invention is to provide a stirring means. The suspension flows from the main tank via a valve into the sedimentation tank via the discharge pipe, and the sedimentation tank is equipped with a sedimentation cylinder, which is a detection dish suspended from the balance, to detect sedimented powder particles in the suspension. The sedimentation powder particle size distribution is measured in advance by a gravity sedimentation type particle size distribution measuring device which is settled on a dish to measure the weight of the sedimented powder particles, and the particle size distribution of the powder is measured based on the measured value.解決 The problem is solved by a gravity sedimentation type particle size distribution measuring device characterized by correcting various coefficients of the optical particle size distribution measuring device.
【０００８】[0008]
【実施例】図１は、本発明による重力沈降式粒子径分布
測定装置を示し、懸濁液７を収容するメインタンク１内
に攪拌器１０の回転する攪拌羽根が進入している。攪拌
器１０は、メインタンク１中の懸濁液７を攪拌する。1 shows a gravitational sedimentation type particle size distribution measuring apparatus according to the present invention, in which a rotating stirring blade of a stirrer 10 enters a main tank 1 containing a suspension 7. The stirrer 10 stirs the suspension 7 in the main tank 1.
【０００９】一方部分的にのみ示された機枠に天秤２が
懸架されており、即ち天秤２はその下方に沈降筒３を糸
によって吊るしていて、検出皿である沈降筒３は沈降筒
３を取り囲む沈降槽４の底部には接触しておらずに、沈
降槽４の底部から離れて位置し、前記糸の張力によって
のみ天秤２に支持されている。糸はその下端を沈降筒３
の上縁に係留されている。沈降筒３の外方で沈降筒３を
取り囲む沈降槽４も沈降筒３も例えば円筒状に形成され
ている。沈降槽４はその底部を、機枠上に支持されてい
る。On the other hand, a balance 2 is suspended on a machine frame which is only partially shown, that is, the balance 2 has a sedimentation cylinder 3 suspended thereunder by a thread, and the sedimentation cylinder 3 serving as a detection plate is a sedimentation cylinder 3. Is not in contact with the bottom of the settling tank 4 surrounding it, but is located away from the bottom of the settling tank 4 and is supported on the balance 2 only by the tension of the thread. The lower end of the thread is settling cylinder 3
Moored at the upper rim. Both the settling tank 4 surrounding the settling cylinder 3 and the settling cylinder 3 outside the settling cylinder 3 are formed, for example, in a cylindrical shape. The sedimentation tank 4 has its bottom supported on a machine frame.
【００１０】メインタンク１には弁１１が中間接続され
ており、弁１１を経て接続された排出管５は排出口６を
沈降筒３の上方に開口させることにより連通している。A valve 11 is intermediately connected to the main tank 1, and a discharge pipe 5 connected via the valve 11 communicates by opening a discharge port 6 above the settling cylinder 3.
【００１１】図１に示す本発明によるサブタンク８を備
えた重力沈降式粒子径分布測定装置において、その都度
の懸濁液のメインタンク１よりの排出終了後に、サブタ
ンク８に充填した一部の分散液または懸濁液９をサブタ
ンク用弁１２を開いてメインタンク１または排出管５の
入口へ流入させ、更に、排出管５の内部に沈降残留した
粉体粒子を沈降槽４へ洗い流す。その結果、正確な粒子
径分布の測定が実施できることになる。In the gravitational sedimentation type particle size distribution measuring apparatus provided with the sub-tank 8 according to the present invention shown in FIG. 1, after the suspension of the suspension from the main tank 1 is completed in each case, a part of the suspension filled in the sub-tank 8 is dispersed. The liquid or suspension 9 is allowed to flow into the main tank 1 or the inlet of the discharge pipe 5 by opening the sub-tank valve 12, and the powder particles remaining settled in the discharge pipe 5 are washed out into the settling tank 4. As a result, accurate measurement of the particle size distribution can be performed.
【００１２】また、沈降槽４において、懸濁液７の粉体
粒子が沈降筒３に沈降する際に、検出皿３である沈降筒
を長くすると、粉体粒子がボイコット現象に影響されず
に沈降されるので、測定精度を上昇させることができ、
しかも実用上の長さも考えると、沈降筒の高さ（Ｈ）と
その直径（Ｄ）との関係をＨ＝０．５〜４Ｄとしたなら
ば、沈降筒３に沈降する粉体粒子をボイコット現象に影
響されずに、安定したボイコット係数がほぼ１となり、
簡単且つ便利に測定できる。この値は、下記の実測デ─
タにより確認できる。In the sedimentation tank 4, when the powder particles of the suspension 7 settle in the sedimentation cylinder 3, if the sedimentation cylinder as the detection dish 3 is lengthened, the powder particles are not affected by the boycott phenomenon. Because it is settled, measurement accuracy can be increased,
Moreover, considering the practical length, if the relationship between the height (H) of the sedimentation cylinder and its diameter (D) is H = 0.5 to 4D, the powder particles settling in the sedimentation cylinder 3 are boycotted. Without being affected by the phenomenon, the stable boycott coefficient becomes almost 1,
Easy and convenient measurement. This value is based on the following measured data.
Data.
【００１３】 [0013]
【００１４】メインタンク１内の攪拌器１０を自動始動
・停止可能とし、メインタンク１の下部に自動弁１１を
設け、特殊ソフトをインスト─ルしたパソコンによるコ
ントロ─ルを実施するならば、分散媒、分散剤及び被測
定粉体をメインタンク１内に投入することを除けば他の
工程を全て自動化して、それで比較的短時間に測定結果
が得られる。粒子径分布の自動測定装置を構成すること
が可能である。If the stirrer 10 in the main tank 1 can be automatically started and stopped, an automatic valve 11 is provided at the lower part of the main tank 1, and if the control is performed by a personal computer in which special software is installed, the dispersion is performed. Except for charging the medium, the dispersant, and the powder to be measured into the main tank 1, all the other steps are automated, and the measurement result can be obtained in a relatively short time. It is possible to configure an automatic measuring device for particle size distribution.
【００１５】更に、最近では、間接測定による粒子径分
布測定器、例えば第２図に示すレ─ザ光式粒子径分布測
定器が使用されてきており、迅速に測定できるものとし
て注目されている。これは、例えば、レ─ザ１３からビ
─ム拡大器１４を介して懸濁液７中の粒子１６にレ─ザ
ビ─ム１５を当てて、デイテクタ部１７における散乱光
１８により粒子径分布を測定する測定器である。この場
合、特定の検定用粒子を使用して、キャリブレ─ション
を行い、諸係数を特定して、他の粉体の粒子径分布を測
定している。Further, recently, a particle size distribution measuring device based on indirect measurement, for example, a laser beam type particle size distribution measuring device shown in FIG. 2 has been used, and has attracted attention as a device capable of quick measurement. . For example, the laser beam 15 is applied to the particles 16 in the suspension 7 from the laser 13 via the beam expander 14, and the particle size distribution is scattered by the scattered light 18 in the detector 17. It is a measuring instrument for measuring. In this case, calibration is performed using specific test particles, various coefficients are specified, and the particle size distribution of another powder is measured.
【００１６】したがって、その粒子の例えば、表面の
色、形状、反射率、粗さなどが、検定用粒子のそれらと
相違していれば、正しい粒子径分布を得ることはできな
い。そこで、短時間で測定が可能な本重力沈降式粒子径
分布測定装置により得られた粒子径分布を使用して、例
えば図３及び図４のように、レ─ザ光式粒子径分布測定
器の諸係数を変更すれば、常に、簡単且つ便利に、短時
間にどの粉体の粒子径分布も正確に得られることにな
る。Therefore, if the color, shape, reflectance, roughness, etc. of the surface of the particles are different from those of the test particles, a correct particle size distribution cannot be obtained. Therefore, using a particle size distribution obtained by the present gravitational sedimentation type particle size distribution measuring apparatus capable of measuring in a short time, for example, as shown in FIGS. By changing the coefficients, the particle size distribution of any powder can be obtained easily and conveniently in a short time.
【００１７】図３の（ａ）においては、懸濁液７は、排
出管５を経由して分岐管ａ及びｂより沈降筒３及び沈降
槽４に排出される時に、あらかじめ図３（ａ）のように
設置したレ─ザ光式粒子径分布測定器のレ─ザ及びデイ
テクタ部を使用して、粒子径分布を測定し、同時に沈降
筒３及び沈降槽４と天秤２などによる本重力沈降式粒子
径分布測定装置による粒子径分布測定結果と比較し、レ
─ザ光式粒子径分布測定器の諸係数を補正することにな
る。In FIG. 3A, when the suspension 7 is discharged to the settling cylinder 3 and the settling tank 4 from the branch pipes a and b via the discharge pipe 5, the suspension 7 is previously prepared. The particle size distribution is measured using the laser and the detector of the laser light type particle size distribution measuring instrument installed as described above, and at the same time, the gravity sedimentation by the sedimentation cylinder 3 and the sedimentation tank 4 and the balance 2 etc. The coefficients of the laser beam type particle size distribution measuring device are corrected by comparing with the result of the particle size distribution measurement by the particle size distribution measuring device.
【００１８】図３の（ｂ）においては、沈降筒３及び沈
降槽４に懸濁液７が投入された時に、あらかじめ図３
（ｂ）のように設置したレ─ザ光式粒子径分布測定器の
レ─ザ及びデイテクタ部を使用して、粒子径分布を測定
し、同時に本重力沈降式粒子径分布測定装置による粒子
径分布測定結果と比較し、レ─ザ光式粒子径分布測定器
の諸係数を補正することになる。In FIG. 3B, when the suspension 7 is put into the settling cylinder 3 and the settling tank 4,
The particle size distribution is measured by using the laser and detector of the laser light type particle size distribution measuring device installed as shown in (b), and at the same time, the particle size is measured by the gravity sedimentation type particle size distribution measuring device. In comparison with the distribution measurement result, the coefficients of the laser beam type particle size distribution measuring device are corrected.
【００１９】以上の図３の如く、同一測定器の中に、本
重力沈降式粒子径分布測定装置とレ─ザ光式粒子径分布
測定器をセットした測定手段とすることもできる。As shown in FIG. 3, it is also possible to use a measuring device in which the present gravitational sedimentation type particle size distribution measuring apparatus and a laser beam type particle size distribution measuring device are set in the same measuring device.
【００２０】図４は、同一懸濁液の、本重力沈降式粒子
径分布測定装置Ａによる粒子径分布測定結果とレ─ザ光
式粒子径分布測定器Ｂによる粒子径分布測定結果を、例
えば補正器Ｃを利用して比較し、諸係数の補正値をレ─
ザ光式粒子径分布測定器Ｂにフィ─ドバックすることに
なる。それ故に、このことは、間接測定による粒子径分
布測定器Ｂ、例えばレ─ザ光式粒子径分布測定器のキャ
リブレ─ション（較正）を行ったことになる。FIG. 4 shows the results of measurement of the particle size distribution of the same suspension by the gravitational sedimentation type particle size distribution analyzer A and the result of measurement by the laser beam type particle size distribution analyzer B. Using the compensator C for comparison, the correction values of various coefficients are recorded.
Feedback is provided to the optical particle size distribution measuring device B. Therefore, this means that the calibration (calibration) of the particle size distribution measuring device B by the indirect measurement, for example, the laser light type particle size distribution measuring device has been performed.
【００２１】[0021]
【発明の効果】本発明によれば、被測定粉体としてフラ
イアッシュ、関東ローム、シリカサンド等の各種の粉体
の懸濁液からの重力沈降式粒子径分布測定が正確にかつ
短時間に行われることができる。同時に、その測定結果
を利用して、他の粒子径分布測定器、例えばレ─ザ光式
粒子径分布測定器のキャリブレ─ションを行うことによ
り、この測定器の測定精度を向上できる。According to the present invention, a gravity sedimentation type particle size distribution measurement from a suspension of various kinds of powders such as fly ash, Kanto loam, silica sand, etc. as the powder to be measured can be performed accurately and in a short time. Can be done. At the same time, by using the measurement result to calibrate another particle size distribution measuring device, for example, a laser beam type particle size distribution measuring device, the measurement accuracy of this measuring device can be improved.
【００２２】図１に示す本発明による重力沈降式粒子径
分布測定装置において、その都度の懸濁液のメインタン
クよりの排出終了後に、サブタンクに充填した分散液な
どをサブタンク用弁を開いてメインタンクなどへ流入さ
せ、更に、排出管へ流入させて排出管の底に沈降残留し
た粉体粒子を沈降槽へ洗い流すので、沈降残留した粉体
粒子の影響を受けずに正確に測定できる。In the gravitational sedimentation type particle size distribution measuring apparatus according to the present invention shown in FIG. 1, after the discharge of the suspension from the main tank in each case, the dispersion liquid filled in the sub-tank is opened by opening the valve for the sub-tank. The powder particles flow into a tank or the like, and further flow into the discharge pipe, and the powder particles settled at the bottom of the discharge pipe are washed out into the sedimentation tank, so that accurate measurement can be performed without being affected by the powder particles remaining settled.
【００２３】沈降筒の高さ（Ｈ）とその直径（Ｄ）との
関係を Ｈ＝０．５〜４Ｄとしたので、沈降筒３に沈降
する粉体粒子をボイコット現象に影響されずに、安定し
たボイコット係数がほぼ１となり、簡単且つ便利に粒子
径分布を測定できる。Since the relationship between the height (H) of the settling cylinder and its diameter (D) is H = 0.5-4D, the powder particles settling in the settling cylinder 3 are not affected by the boycott phenomenon. The stable boycott coefficient is almost 1, and the particle size distribution can be measured simply and conveniently.
【００２４】短時間で測定が可能な本発明の重力沈降式
粒子径分布測定装置による他粒子径分布測定器の諸係数
修正装置を利用した、例えば、レ─ザ光式粒子径分布測
定器では、検定用粉体と異なった粉体の粒子径分布を測
定する場合、被計測粉体の粒子径分布を、まず、本重力
沈降式粒子径分布測定装置により測定し、同諸係数修正
装置により、同レ─ザ光式粒子径分布測定器の諸係数を
修正した上、粒子径分布の測定を行えば、簡単且つ便利
に、正しい粒子径分布が測定できることになり、レ─ザ
光式粒子径分布測定器の機能をより一層向上することに
なる。[0024] For example, a laser beam-type particle size distribution measuring apparatus utilizing a gravity sedimentation type particle size distribution measuring apparatus of the present invention, which can perform measurement in a short time, and using various coefficient correction devices of other particle size distribution measuring apparatuses. When measuring the particle size distribution of a powder different from the test powder, the particle size distribution of the powder to be measured is first measured with the present gravity sedimentation type particle size distribution measuring device, and the various coefficient correction devices are used. If the particle size distribution is measured after correcting the coefficients of the laser particle size distribution analyzer, the correct particle size distribution can be measured easily and conveniently. The function of the diameter distribution measuring device will be further improved.
【図１】図１は、本発明による重力沈降式粒子径分布測
定装置の断面図である。FIG. 1 is a sectional view of a gravitational sedimentation type particle size distribution measuring apparatus according to the present invention.
【図２】図２は、本発明の重力沈降式粒子径分布測定装
置により諸係数を修正する他粒子径分布測定器の断面図
である。FIG. 2 is a cross-sectional view of another particle size distribution measuring device for correcting various coefficients by the gravity sedimentation type particle size distribution measuring device of the present invention.
【図３】図３（ａ）及び（ｂ）は、本発明による重力沈
降式粒子径分布測定装置に他粒子径分布測定器を設置し
た断面図である。FIGS. 3 (a) and 3 (b) are cross-sectional views in which another particle size distribution measuring device is installed in the gravity sedimentation type particle size distribution measuring device according to the present invention.
【図４】図４は、本発明による重力沈降式粒子径分布測
定装置により諸係数の補正値をレ─ザ光式粒子径分布測
定器にフィ─ドバックする概略図である。FIG. 4 is a schematic diagram in which correction values of various coefficients are fed back to a laser beam type particle size distribution measuring device by the gravity sedimentation type particle size distribution measuring device according to the present invention.
【図５】図５は、従来技術による重力沈降式粒子径分布
測定装置の断面図である。FIG. 5 is a cross-sectional view of a gravitational sedimentation type particle size distribution measuring device according to the prior art.
１ メインタンク ２ 天秤 ３ 検出皿即ち沈降筒 Ｈ 検出皿の深さ Ｄ 検出皿の直径 ４ 沈降槽 ５ 排出管 ａ，ｂ 分岐管 ６ 排出口 ７ 懸濁液 ８ サブタンク ９ 分散液 １０ 攪拌装置 １１ 弁 １２ サブタンク用弁 １３ レ─ザ １４ ビ─ム拡大器 １５ レ─ザビ─ム １６ 懸濁液中の粒子 １７ デイテクタ部 １８ 散乱光 Ａ 重力沈降式粒子径分布測定装置 Ｂ レ─ザ光式粒子径分布測定器 Ｃ 補正器 ３０ 懸濁液 ３１ ミキサケーシング ３２ 天秤 ３３ 沈降筒 ３４ 沈降槽 ３５ 排出管 ３６ 排出口 ４０ 攪拌装置 ４１ 弁 DESCRIPTION OF SYMBOLS 1 Main tank 2 Balance 3 Detection dish or settling cylinder H Depth of detection dish D Diameter of detection dish 4 Sedimentation tank 5 Discharge pipe a, b Branch pipe 6 Discharge port 7 Suspension 8 Subtank 9 Dispersion liquid 10 Stirrer 11 Valve 12 Valve for sub-tank 13 Laser 14 Beam expander 15 Laser beam 16 Particles in suspension 17 Detector 18 Scattered light A Gravity sedimentation type particle size distribution measuring device B Laser particle size Distribution measuring device C Corrector 30 Suspension 31 Mixer casing 32 Balance 33 Settling cylinder 34 Settling tank 35 Discharge pipe 36 Discharge port 40 Stirrer 41 Valve
Claims (3)
介して懸濁液を排出管経由により沈降槽に流入させ、沈
降槽には天秤から吊るされた検出皿である沈降筒を設け
て懸濁液中の沈降粉体粒子を検出皿に沈降させて沈降粉
体粒子の重量を測定し、メインタンクまたは排出管入口
には弁を介して接続したサブタンクを設けて、サブタン
クには一部の分散液または懸濁液を充填してその都度の
懸濁液のメインタンクからの排出終了後に弁を開放して
メインタンクまたは排出管入口に流入させ、排出管へ流
して、排出管に沈降残留した粉体を洗い流すことを特徴
とする重力沈降式粒子径分布測定装置。A suspension is introduced from a main tank provided with a stirring means via a valve into a settling tank via a discharge pipe, and the settling tank is provided with a settling cylinder which is a detection plate suspended from a balance. The sedimented powder particles in the turbid liquid are settled on the detection dish, and the weight of the sedimented powder particles is measured.A sub-tank connected via a valve is provided at the main tank or discharge pipe inlet. After filling the dispersion or suspension and discharging the suspension from the main tank each time, the valve is opened to flow into the main tank or the discharge pipe inlet, flow to the discharge pipe, and settle in the discharge pipe. A gravitational sedimentation type particle size distribution measuring device characterized by washing away the powder.
介して懸濁液を排出管経由により沈降槽に流入させ、沈
降槽には天秤から吊るされた検出皿である沈降筒を設け
て懸濁液中の沈降粉体粒子を検出皿に沈降させて沈降粉
体粒子の重量を測定する際に、検出皿である沈降筒の高
さ（Ｈ）をその直径（Ｄ）との関係をＨ＝０．５〜４Ｄ
としてボイコット現象に影響されずに粉体粒子を沈降さ
せることを特徴とする重力沈降式粒子径分布測定装置。2. A suspension from a main tank provided with a stirring means through a valve to a sedimentation tank via a discharge pipe. The sedimentation tank is provided with a sedimentation cylinder as a detection plate suspended from a balance. When the sedimented powder particles in the suspension are settled on the detection dish and the weight of the sedimented powder particles is measured, the relationship between the height (H) of the sedimentation cylinder as the detection dish and the diameter (D) is H. = 0.5-4D
A gravity sedimentation type particle size distribution measuring apparatus characterized in that the powder particles are settled without being affected by the boycott phenomenon.
介して懸濁液を排出管経由により沈降槽に流入させ、沈
降槽には天秤から吊るされた検出皿である沈降筒を設け
て懸濁液中の沈降粉体粒子を検出皿に沈降させて沈降粉
体粒子の重量を測定する重力沈降式粒子径分布測定装置
により得られた粉体の粒子径分布測定結果を使用し、間
接測定による粒子径分布測定器の諸係数を修正する機能
を備えることを特徴とする重力沈降式粒子径分布測定装
置。3. A suspension from a main tank provided with stirring means through a valve to a sedimentation tank via a discharge pipe, and the sedimentation tank is provided with a sedimentation cylinder which is a detection plate suspended from a balance. Indirect measurement using the particle size distribution measurement result of the powder obtained by the gravity sedimentation type particle size distribution measuring device that sediments the settled powder particles in the suspension liquid on the detection dish and measures the weight of the settled powder particles A gravity sedimentation type particle size distribution measuring device having a function of correcting various coefficients of a particle size distribution measuring device by means of the method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29710299A JP2001116681A (en) | 1999-10-19 | 1999-10-19 | Gravitational precipitation type particle size distribution measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29710299A JP2001116681A (en) | 1999-10-19 | 1999-10-19 | Gravitational precipitation type particle size distribution measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001116681A true JP2001116681A (en) | 2001-04-27 |
Family
ID=17842244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29710299A Withdrawn JP2001116681A (en) | 1999-10-19 | 1999-10-19 | Gravitational precipitation type particle size distribution measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001116681A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017521646A (en) * | 2014-06-10 | 2017-08-03 | コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． | Aerosol sensor and sensor method |
| CN109406351A (en) * | 2017-08-17 | 2019-03-01 | 中国石油化工股份有限公司 | Weighing measurement fluid-bed heat exchanger distribution of particles |
| CN109406331A (en) * | 2017-08-17 | 2019-03-01 | 中国石油化工股份有限公司 | The measurement device of fluid-bed heat exchanger distribution of particles |
-
1999
- 1999-10-19 JP JP29710299A patent/JP2001116681A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017521646A (en) * | 2014-06-10 | 2017-08-03 | コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． | Aerosol sensor and sensor method |
| CN109406351A (en) * | 2017-08-17 | 2019-03-01 | 中国石油化工股份有限公司 | Weighing measurement fluid-bed heat exchanger distribution of particles |
| CN109406331A (en) * | 2017-08-17 | 2019-03-01 | 中国石油化工股份有限公司 | The measurement device of fluid-bed heat exchanger distribution of particles |
| CN109406351B (en) * | 2017-08-17 | 2021-02-09 | 中国石油化工股份有限公司 | Weighing and determining particle distribution of fluidized bed heat exchanger |
| CN109406331B (en) * | 2017-08-17 | 2021-03-30 | 中国石油化工股份有限公司 | Device for measuring particle distribution of fluidized bed heat exchanger |
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