JPS59190639A - Reducing machine - Google Patents

Reducing machine

Info

Publication number
JPS59190639A
JPS59190639A JP6585783A JP6585783A JPS59190639A JP S59190639 A JPS59190639 A JP S59190639A JP 6585783 A JP6585783 A JP 6585783A JP 6585783 A JP6585783 A JP 6585783A JP S59190639 A JPS59190639 A JP S59190639A
Authority
JP
Japan
Prior art keywords
sample
ratio
opening
reduction
radius
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.)
Granted
Application number
JP6585783A
Other languages
Japanese (ja)
Other versions
JPH0312697B2 (en
Inventor
Hiroyuki Tamenori
為則 裕之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Sheet Glass Co Ltd
Original Assignee
Nippon Sheet Glass Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Sheet Glass Co Ltd filed Critical Nippon Sheet Glass Co Ltd
Priority to JP6585783A priority Critical patent/JPS59190639A/en
Publication of JPS59190639A publication Critical patent/JPS59190639A/en
Publication of JPH0312697B2 publication Critical patent/JPH0312697B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (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)

Abstract

PURPOSE:To obtain a sample having a constant weight readily, by varying the ratio between the length of openings, through which the sample at an arbitrary radius from the axial center of a rotary body is selectively passed, and the total length of a circumference, thereby performing the reduction at an arbitrary ratio accurately. CONSTITUTION:A sample feeder 9 is moved on a scaled supporting rod 8 and fixed at a sample falling position corresponding to a reduction ratio. Then, a turn table 2 is rotated by a motor 5, and a sample is inputted into the feeder 9. Then the sample falls through a lower end 12 and collected by a receiving pan 11 through openings 1 and 10. The ratio of the sample, which falls to a position separated by a radius (r) from an axial center Ao, becomes the ratio between the sum of the lengths of arcs on the opening 1 and the total length of a circumference. When both ends 1c and 1d of the opening 1 are made parallel with a central line 15, said ratio is continuously varied in the direction of the radius. By moving the feeder 9, the specified amount of the sample can be fed at an arbitrary reduction ratio.

Description

【発明の詳細な説明】 この発明は、所定の軸心を中心として回転する回転体と
、この回転体に形成されかつ縮分すべき試料を縮分比に
応じて選択的に通過させる開口とをそれぞれ具備する縮
分機に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention includes a rotating body that rotates around a predetermined axis, and an opening that is formed on the rotating body and allows a sample to be reduced to pass through selectively according to the reduction ratio. The present invention relates to a reduction fractionator equipped with the following.

近年、品質管理、調査または研究開発等の様々な目的で
各種の分析試験が行われている。これらの分析において
は、分析試料の組成が母集団を代表する組成であること
が重要である。特に試料が粉または粒状である場合には
不均一であることが多く、試料のサンプリングは母集団
の組成の推定精度に大きく影響する。
In recent years, various analytical tests have been conducted for various purposes such as quality control, investigation, or research and development. In these analyses, it is important that the composition of the analysis sample is representative of the population. Particularly when the sample is in the form of powder or granules, it is often non-uniform, and the sampling of the sample greatly affects the accuracy of estimating the composition of the population.

一般には、分析対象となる母集団から採取された試料の
量が多いために、更に縮分を行って分析試料を得る。こ
の目的のための縮分装置としては、従来よシニ分器、四
分器、回転ドラム式縮分器及びターンテーブル式縮分器
等がある。これらの縮分器では、所定の縮分比での縮分
操作またはとの縮分を繰シ返す操作で試料の縮分が行わ
れるので、試料の縮分比が予め固定されている。
Generally, since the amount of samples collected from the population to be analyzed is large, further reduction is performed to obtain the analysis sample. Conventional reducing devices for this purpose include a single divider, a quarter divider, a rotary drum type reducer, and a turntable type reducer. In these condensers, the sample is condensed by a condensation operation at a predetermined condensation ratio or by repeated condensation, so that the condensation ratio of the sample is fixed in advance.

一方、例えば螢光X線分析においては、試料が粉または
粒状である場合には、更に微粉砕して均一な微粉とする
ことがよく行われる。この際には、一定重量の試料を粉
砕機に入れて一定時間粉砕することによって再現性が向
上する。ところが、この目的に沿って一定重量の試料を
得るために試料の縮分を行う場合には、前述のような従
来の縮分器では試料の等分を繰シ返すだけであるために
、一定重量を得ることは難しい。従って、上記の方法に
よって近似重量にした後に、精度を多少犠牲にして不等
分することによって重量を合わせざるを得ない。
On the other hand, in, for example, fluorescent X-ray analysis, if the sample is powder or granules, it is often further pulverized to obtain a uniform fine powder. In this case, reproducibility is improved by placing a sample of a certain weight in a grinder and grinding it for a certain period of time. However, when condensing a sample to obtain a sample with a constant weight for this purpose, the conventional condenser described above simply divides the sample into equal parts repeatedly. Gaining weight is difficult. Therefore, after obtaining approximate weights using the above method, the weights have to be matched by unequally dividing the weights at the expense of some accuracy.

この発明は、上述のような欠点を除去した有効な縮分機
を提供することを目的とする。この発明に係る縮分機は
、所定の軸心を中心として回転する回転体と、この回転
体に形成されかつ縮分すべき試料を縮分比に応じて選択
的に通過させる開口とをそれぞれ具備する縮分機におい
て、前記軸心からの任意の半径rにおける円周の全長2
πrに対するこの円周の前記開口上の円弧の長さaの比
a/2πrが前記半径rに応じて可変となる形状に前記
開口を構成し、これによって、前記開口に対する前記試
料の通過位置を前記半径rの方向に変更することによシ
、前記縮分比を変更し得るように構成している。こめよ
うに構成することによって、任意の割合の縮分を簡便か
つ精度良く行うことができるので、目標の一定重量の試
料を容易に得ることが可能である。
The object of the present invention is to provide an effective fractionator that eliminates the above-mentioned drawbacks. The reduction fractionator according to the present invention includes a rotating body that rotates around a predetermined axis, and an opening that is formed in the rotating body and allows the sample to be reduced to selectively pass through depending on the reduction ratio. In the reduction machine, the total length of the circumference at an arbitrary radius r from the axis 2
The aperture is configured in a shape such that the ratio a/2πr of the length a of the circular arc on the aperture of this circumference to πr is variable depending on the radius r, and thereby the passing position of the sample with respect to the aperture is determined. The reduction ratio can be changed by changing the direction of the radius r. By configuring the apparatus in this way, it is possible to easily and accurately perform reduction at any ratio, and therefore it is possible to easily obtain a sample having a target constant weight.

次にこの発明の実施例を図面に付き説明する。Next, embodiments of the invention will be described with reference to the drawings.

第1図はこの発明の1実施例を示す縦断面図である。こ
の実施例は、前述の開口上の円弧の長さの合計aが半径
rによらず一定である場合である。
FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention. In this embodiment, the total length a of the arcs above the opening is constant regardless of the radius r.

開口(1)は第2図に示すようにターンテーブル(2)
に同形のものが2個設けてあり、開口(1)の外周には
突出壁(3)が形成されている。このターンテーブル(
2)は、支持台(4)の内側に取り付けである電動機(
5)によって回転軸(6)の軸心AOの回りに回転可能
である。支持台(4)の外周にはネジ(7)によって目
盛付き支持棒(8)がターンテーブル(2)の径方向に
延びるように固定されておシ、この目盛付き支持棒(8
)の先端には漏斗状の試料供給器(9)が取シ付けられ
ている。支持台(4)の上面には、開口(1)よりも少
し大きい開口(10)が設けである。また、支持台(4
)の内部には、試料受皿aυが置いである。なお、この
実施例においては、ターンテーブル(2)は半径15江
]のアルミ製円盤であって、開口(1)の軸心AOから
の任意の半径【における円周の円弧長さaQが5[cm
]の一定長さを有しかつターンテーブル(2)の軸心A
Oから測って3[備コから13[m]に亘っている。ま
た突出壁(3)の高さは2[需]である。
The opening (1) is connected to the turntable (2) as shown in Figure 2.
Two pieces of the same shape are provided, and a protruding wall (3) is formed on the outer periphery of the opening (1). This turntable (
2) is an electric motor (
5), it is rotatable around the axis AO of the rotating shaft (6). A scaled support rod (8) is fixed to the outer periphery of the support base (4) by screws (7) so as to extend in the radial direction of the turntable (2).
) A funnel-shaped sample supply device (9) is attached to the tip. The upper surface of the support base (4) is provided with an opening (10) that is slightly larger than the opening (1). In addition, the support stand (4
) A sample tray aυ is placed inside. In this embodiment, the turntable (2) is an aluminum disk with a radius of 15 degrees, and the arc length aQ of the circumference at an arbitrary radius from the axis AO of the opening (1) is 5 degrees. [cm
] and the axis A of the turntable (2)
It extends 3 [m] from O to 13 [m] from Biko. Further, the height of the protruding wall (3) is 2 [demand].

従って開口(1)の内周端(1a)及び外周端(1b)
は軸心AOを中心とする円弧によって構成され、これら
の内周端(1a)及び外周端(1b)を結ぶ両側端(1
c) (1d)は開口(1)の中心線(15)にほぼ平
行であるが軸心AOの側からターンテーブル(2)の外
周に向かって僅かに末広がりとなっている。なお開口(
1)の内周端(1a)及び外周端(1b)付近が試料の
通過に特に寄与する必要がない場合には、これらの内周
端(1a)及び外周端(1b)を上記中心線α9に対し
て直交する直線形状としてもよい。また、両側端(Ic
) (1d)を中心線(151に対してそれぞれ平行に
して、上記円弧長さaQが上記半径rにかかわらず近似
的に一定となるようにしてもよい。
Therefore, the inner peripheral end (1a) and the outer peripheral end (1b) of the opening (1)
is constituted by a circular arc centered on the axis AO, and both ends (1
c) (1d) is approximately parallel to the center line (15) of the opening (1), but slightly diverges from the axis AO side toward the outer periphery of the turntable (2). Note that the opening (
If the vicinity of the inner circumferential end (1a) and outer circumferential end (1b) of 1) does not particularly need to contribute to the passage of the sample, these inner circumferential ends (1a) and outer circumferential ends (1b) should be aligned with the center line α9. It may also be a straight line shape orthogonal to the curve. Also, both ends (Ic
) (1d) may be made parallel to the center line (151) so that the arc length aQ is approximately constant regardless of the radius r.

次に第1図に示す上述の縮分機を用いて縮分を行う方法
を説明する。まず、試料供給器(9)を目盛付き支持棒
(8)上で適当に移動させて、必要な縮分比から後述の
ように決定される試料落下位置に固定する。次にターン
テーブル(2)を電動機(5)により回転させる。回転
が定速になったら、縮分を行うべき試料を試料供給器(
9)に入れる。この試料は試料供給器(9)の下端aa
から下方に落下する。落下した試料の一部は開口(1)
と開口α0)とを通って試料受皿αυに捕集され、それ
以外の試料はターンテーブル(2)上に残る。試料受皿
ODに捕集された試料が目標の一定重量を持つ試料とな
る。ターンテーブル(2)上に残った試料は、開口(1
)の外周に形成された突出壁(3)とターンテーブル(
2)の外周に形成された突出壁α3)によって、回転中
に開口(1)を通って下方に落下した111だターンテ
ーブル(2)の外周から外側に落下したりすることが防
止される。
Next, a method of performing reduction using the above-mentioned reduction fractionator shown in FIG. 1 will be explained. First, the sample supply device (9) is appropriately moved on the scaled support rod (8) and fixed at a sample drop position determined from the required reduction ratio as described below. Next, the turntable (2) is rotated by the electric motor (5). When the rotation speed reaches a constant speed, transfer the sample to be subjected to reduction to the sample supply device (
9). This sample is placed at the lower end aa of the sample supply device (9).
fall downward from. Part of the sample that fell is an opening (1)
and the opening α0) and are collected in the sample pan αυ, while the remaining sample remains on the turntable (2). The sample collected in the sample tray OD becomes a sample with a target constant weight. The sample remaining on the turntable (2) is removed from the opening (1
) and the protruding wall (3) formed on the outer periphery of the turntable (
The protruding wall α3) formed on the outer periphery of the turntable 2) prevents the 111 that has fallen downward through the opening (1) during rotation from falling outward from the outer periphery of the turntable (2).

上述の実施例において、ターンテーブル(2)上の軸心
AOから半径rの位置に落下した試料は、この半径rの
円周の前記開口(1)上の円弧の長さaoの合計をaと
するとa / 2πrの割合で試料受皿αυに落下する
。従って、縮分を行うべき試料の重量と目標の重量から
縮分比がわかるので、上式によってrを求め、目盛付き
支持棒(8)のその位置に試料供給器(9)をあらかじ
め固定しておけばよい。
In the above embodiment, the sample dropped to a position with a radius r from the axis AO on the turntable (2) has the sum of the arc lengths ao on the opening (1) around the circumference of this radius r. Then, it falls into the sample pan αυ at a rate of a / 2πr. Therefore, since the reduction ratio can be determined from the weight of the sample to be reduced and the target weight, calculate r using the above formula and fix the sample supply device (9) in advance at that position on the graduated support rod (8). Just leave it there.

上記より明らかなように、縮分比a / 2πrが半径
rに応じて連続的に変化する形状に開口(1)を構成し
たので、試料の落下位置を半径方向に変更することてよ
って縮分比を連続的に変えることができる。従って、目
標の一定重量を精度良く得ることが可能である。
As is clear from the above, since the opening (1) is configured in a shape in which the reduction ratio a/2πr changes continuously according to the radius r, the reduction ratio can be adjusted by changing the drop position of the sample in the radial direction. The ratio can be changed continuously. Therefore, it is possible to obtain a target constant weight with high accuracy.

次に芙際の縮分例として珪砂を縮分する場合に付き説明
する。試料の元の重量が122[g]、目標重量は20
.0 [g]とする。この場合には必要な縮分比は12
2/20,0=6.10となる。従って両式を用いれば
、今の場合a =2x5.0= 10 [ciコである
から10/2πr二1/75.10となシ、これよ)r
を求めるとr=9.7[(7)] となる。目盛付き支
持棒(8)の目盛を利用してこの位置に試料供給器(9
)を移動させてから試料を落下させた。縮分後の試料は
、同様な実験を15回繰り返した結果、20.0[g]
の目標重量に対して20.0±1.0 [g]であシ、
満足すべき結果が得られた。試料の元の重量が50〜1
50[g] の範囲内で変化してもこの結果は変わらず
、−回の操作により目標重量に縮分を行うことができる
ことがわかった。また、試料の元の重量が150 [g
1以上の場合であっても、縮分を複数回行うことによっ
てほぼ同様に満足すべき結果が得られた。なお、上述の
縮分例では、試料全量を約5分間で落下させ、またター
ンテーブルの回転速度を15〜30 [rpm]とした
Next, the case where silica sand is reduced will be explained as an example of near-term reduction. The original weight of the sample is 122 [g], the target weight is 20
.. 0 [g]. In this case, the required reduction ratio is 12
2/20,0=6.10. Therefore, if we use both formulas, in the present case a = 2x5.0 = 10 [Since it is ci, it becomes 10/2πr21/75.10, which is it) r
The calculation results in r=9.7 [(7)]. Using the scale of the scaled support rod (8), place the sample supply device (9) at this position.
) was moved and then the sample was dropped. The sample after reduction was 20.0 [g] as a result of repeating the same experiment 15 times.
20.0±1.0 [g] for the target weight of
Satisfactory results were obtained. If the original weight of the sample is 50-1
It was found that this result did not change even if the weight was changed within the range of 50 [g], and it was possible to perform reduction to the target weight by repeating the operation twice. Also, the original weight of the sample is 150 [g
Even in the case of 1 or more, almost the same satisfactory results were obtained by performing the reduction multiple times. In the above-mentioned reduction example, the entire sample was dropped in about 5 minutes, and the rotation speed of the turntable was set at 15 to 30 [rpm].

上述の実施例では、ターンテーブル(2)に設けた開口
(1)の円弧の長さaOの合計aは半径rによらず一定
であるとしたが、一般にはrに応じて可変であってよい
。しかしこの場合には、必要な縮分比から試料落下位置
を求める既述の計算が多少複雑になる。また開口(1)
の加工上の手間を考えると、a=kr+1!(k%l:
実定数)と表される場合が簡便であって実用上好ましい
。この場合、k<0、即ち半径rが大きくなると共に開
口上の円弧の長さaoが小さくなる場合には、−回の操
作で縮分を行うことのできる試料の重量範囲が広く−な
るという利点を有する。
In the above embodiment, the sum a of the arc lengths aO of the opening (1) provided in the turntable (2) is constant regardless of the radius r, but generally it is variable depending on r. good. However, in this case, the above-mentioned calculation for determining the sample dropping position from the required reduction ratio becomes somewhat complicated. Also opening (1)
Considering the processing effort, a=kr+1! (k%l:
It is convenient and practically preferable to express it as a real constant). In this case, when k < 0, that is, when the radius r increases and the length ao of the circular arc above the aperture decreases, the weight range of the sample that can be reduced by - operations becomes wider. has advantages.

開口(1)の個数は上述の実施例では2個としたが、1
個であっても複数であっても本質的な相違はない。開口
が複数の場合には、ターンテーブルの回転速度のムラや
、試料供給器からの試料の落下速度のムシによる縮分精
度への影響が小さくなるばかυでなく、ターンテーブル
の重量のバランスの点からも好ましい。また開口(1)
を2個もしくはそれ以上の複数にしておくと、これらの
開口(1)の幾つかに選択的にカバー(図示せず)を被
せることによって開口(1)の有効数を可変とすること
ができるので、縮分比の可変範囲を大幅に拡大すること
が可能である。
The number of openings (1) was 2 in the above embodiment, but it was 1.
There is no essential difference whether it is individual or plural. If there are multiple openings, the influence on the reduction accuracy due to unevenness in the rotation speed of the turntable or the falling speed of the sample from the sample supply device will be reduced. It is also preferable from this point of view. Also opening (1)
If the number of openings (1) is two or more, the effective number of openings (1) can be made variable by selectively covering some of these openings (1) with a cover (not shown). Therefore, it is possible to greatly expand the variable range of the reduction ratio.

開口上の円弧の長さの合計aは、ターンテーブルの強度
も考慮に入れると、実用上はターンテーブルの半径の1
0〜100[%コが適当である。
Considering the strength of the turntable, the total length a of the arcs on the opening is practically equal to 1 of the radius of the turntable.
0 to 100% is appropriate.

ターンテーブルの回転速度は、落下した試料がターンテ
ーブルに当たって飛び散ることのない回転速度であるこ
とが望ましく、この回転速度は10〜50 [rpm]
が適当である。
The rotation speed of the turntable is preferably such that a dropped sample does not hit the turntable and scatter, and this rotation speed is 10 to 50 [rpm].
is appropriate.

試料の落下速度は、試料によって加減するのが好ましい
。即ち、試料の量が少ない時や不均一さが大きい時はゆ
っくりと落とし、そうでない時は速く落とすのが好まし
い。落下中のターンテーブルの回転回数が多い程縮分精
度が良くなることは明らかである。
It is preferable to adjust the falling speed of the sample depending on the sample. That is, it is preferable to drop the sample slowly when the amount of the sample is small or when the non-uniformity is large, and to drop it quickly otherwise. It is clear that the greater the number of rotations of the turntable during falling, the better the reduction accuracy.

上述の実施例では、試料供給器として公知の漏斗を使用
したが、公知の自動式試料供給器を使用してもよい。
In the embodiments described above, a known funnel was used as the sample feeder, but a known automatic sample feeder may also be used.

また、実施例のターンテーブルはアルミ製としたが、回
転に耐え得る剛性を有する材料であれば他の材料であっ
ても勿論よく、またターンテーブル形式以外に、試料を
通過させるための開口と一体に試料捕集用ケースを設け
た回転体であってもよい。
In addition, although the turntable in the example was made of aluminum, it is of course possible to use other materials as long as the material has rigidity that can withstand rotation. It may be a rotating body that is integrally provided with a sample collection case.

この発明に係る縮分機によれば、任意の割合の縮分を簡
便かつ精度良く行うことができるので、目標の一定重量
の試料を容易に得ることが可能である。
According to the reduction fractionator according to the present invention, reduction of an arbitrary ratio can be easily and accurately performed, so that it is possible to easily obtain a sample having a target constant weight.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明の1実施例を示す縦断面図、第2図は
第1図に示すターンテーブルの平面図である。 なお図面に用いた符号において、 (1)・・・・・・・・・・・・開口 (2)・・・・・・・・・・・・ターンテーブル(3)
・・・・・・・・・・・・突出壁(4)・・・・・・・
・・・・・支持台(5)・・・・・・・・・・・・電動
機(6)・・・・・・・・・・・・回転軸(8)・・・
・・・・・・・・・目盛付き支持棒(9)・・・・・・
・・・・・・試料供給器Ql)・・・・・・・・・・・
・試料受皿である。 代理人 上屋 勝 〃  常包芳男 〃  杉浦俊貴
FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention, and FIG. 2 is a plan view of the turntable shown in FIG. 1. In addition, in the symbols used in the drawings, (1)......Opening (2)......Turntable (3)
・・・・・・・・・Protruding wall (4)・・・・・・
.....Support stand (5) .....Electric motor (6) .....Rotating shaft (8) ...
......Support rod with scale (9)...
...Sample supply device Ql) ......
・It is a sample tray. Agent Masaru Ueya Yoshio Tsuneko Toshiki Sugiura

Claims (1)

【特許請求の範囲】[Claims] 所定の軸心を中心として回転する回転体と、この回転体
に形成されかつ縮分すべき試料を縮分比に応じて選択的
に通過させる開口とをそれぞれ具備する縮分機において
、前記軸心からの任意の半径rにおける円周の全長2π
rに対するこの円周の前記開口上の円弧の長さaの比a
/2πrが前記半径rに応じて可変となる形状に前記開
口を構成し、これによって、前記開口に対する前記試料
の通過位置を前記半径rの方向に変更することにょシ、
前記縮分比を変更し得るように構成した縮分機。
In a reduction machine that is equipped with a rotating body that rotates around a predetermined axis, and an opening that is formed on the rotating body and allows the sample to be reduced to selectively pass through depending on the reduction ratio, The total length of the circumference 2π at any radius r from
The ratio a of the length a of the arc on the opening of this circumference to r
configuring the opening to have a shape in which /2πr is variable according to the radius r, thereby changing the passage position of the sample with respect to the opening in the direction of the radius r,
A reduction machine configured to be able to change the reduction ratio.
JP6585783A 1983-04-14 1983-04-14 Reducing machine Granted JPS59190639A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6585783A JPS59190639A (en) 1983-04-14 1983-04-14 Reducing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6585783A JPS59190639A (en) 1983-04-14 1983-04-14 Reducing machine

Publications (2)

Publication Number Publication Date
JPS59190639A true JPS59190639A (en) 1984-10-29
JPH0312697B2 JPH0312697B2 (en) 1991-02-20

Family

ID=13299099

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6585783A Granted JPS59190639A (en) 1983-04-14 1983-04-14 Reducing machine

Country Status (1)

Country Link
JP (1) JPS59190639A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035745U (en) * 1973-07-28 1975-04-15
US4170900A (en) * 1978-01-20 1979-10-16 Ozawa Kenneth Y Rotary sampler for particulate matter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035745U (en) * 1973-07-28 1975-04-15
US4170900A (en) * 1978-01-20 1979-10-16 Ozawa Kenneth Y Rotary sampler for particulate matter

Also Published As

Publication number Publication date
JPH0312697B2 (en) 1991-02-20

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