JPH04346051A - Device for sampling of particle - Google Patents

Device for sampling of particle

Info

Publication number
JPH04346051A
JPH04346051A JP11886191A JP11886191A JPH04346051A JP H04346051 A JPH04346051 A JP H04346051A JP 11886191 A JP11886191 A JP 11886191A JP 11886191 A JP11886191 A JP 11886191A JP H04346051 A JPH04346051 A JP H04346051A
Authority
JP
Japan
Prior art keywords
powder
rotating body
particle
cylinder
sampling
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
JP11886191A
Other languages
Japanese (ja)
Other versions
JP2741801B2 (en
Inventor
Tadashi Ataishi
阿多石 忠
Toru Kojiya
徹 糀谷
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 Shokubai Co Ltd
Original Assignee
Nippon Shokubai 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 Shokubai Co Ltd filed Critical Nippon Shokubai Co Ltd
Priority to JP3118861A priority Critical patent/JP2741801B2/en
Publication of JPH04346051A publication Critical patent/JPH04346051A/en
Application granted granted Critical
Publication of JP2741801B2 publication Critical patent/JP2741801B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Sampling And Sample Adjustment (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

PURPOSE:To obtain a division-sampling device of a particle which is compact and prevents the particle from being scattered to a surrounding and then achieves division sampling of only a small amount of measurement sample from a large amount of particles accurately and readily. CONSTITUTION:A means for allowing a particle P to be supplied and dropped continuously by a hopper 10, etc., is provided within a cylinder 20 and a rotary body 30 with a particle-transmission portion 32 is provided at a dropping path of the particle P. An opening of a particle sampling pipe 50 is provided directly below the dropping path of the particle P at a lower portion of the rotary body 30 and at the same time particle collection paths 62 and 64 for collecting particles which dropped are provided at a location other than the particle sampling pipe 50.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】この発明は、粉体の分割採取装置
に関し、詳しくは、粉体の粒度分布を測定したりするた
めに、粉体の全量から、測定に必要な少量の粉体試料の
みを分割して採取する装置に関するものである。
[Industrial Application Field] This invention relates to a powder dividing sampling device, and more specifically, in order to measure the particle size distribution of powder, a small amount of powder sample necessary for measurement is collected from the total amount of powder. This relates to a device that divides and collects only.

【0002】0002

【従来の技術】化学薬品や成形材料、その他の各種粉体
を製造したときに、得られた粉体の粒度分布その他の性
状を測定することがある。この場合、測定に必要な粉体
試料の量は、製造された粉体の全体量に比べてわずかな
量である。そこで、大量の粉体から、測定に必要な少量
の粉体試料のみを分割して採取する必要が生じる。
BACKGROUND OF THE INVENTION When chemicals, molding materials, and various other powders are manufactured, the particle size distribution and other properties of the resulting powders are sometimes measured. In this case, the amount of powder sample required for measurement is small compared to the total amount of powder produced. Therefore, it becomes necessary to divide and collect only a small amount of powder sample necessary for measurement from a large amount of powder.

【0003】粉体全体のうち、どの部分の粉体試料をと
っても、同じ性状を有しているのであれば、粉体全体の
適当な位置から粉体試料を取り出すだけでよい。しかし
、実際には、最初に製造された部分の粉体と最後に製造
された部分の粉体では、その性状が変わっている可能性
がある。また、粉体を搬送したり保管したりしているう
ちに、振動などの影響で、粉体の粒度分布が場所により
偏ってしまう場合もある。
[0003] If a powder sample from any part of the entire powder has the same properties, it is sufficient to simply take the powder sample from an appropriate position of the entire powder. However, in reality, the properties of the powder in the first manufactured part and the powder in the last manufactured part may be different. Further, while the powder is being transported or stored, the particle size distribution of the powder may become uneven depending on the location due to vibrations or the like.

【0004】そこで、粉体全体の各部分から均等に粉体
を採取して、得られた粉体試料が、粉体全体の性状を正
確に代表するようにすることが必要になる。このように
して粉体試料を分割採取することを、縮分とも言い、そ
のための方法あるいは装置が種々開発されている。例え
ば、中央で仕切られた容器に対して、仕切りの上方を中
心にして容器の左右に粉体を振り分けるようにして粉体
を落下供給すれば、仕切りの左右に溜まった粉体は、均
等に2分割されている。このような分割を、何度も繰り
返せば、測定に必要な量だけの粉体を取り出すことがで
き、取り出された粉体は、粉体全体の性状を代表するも
のとなる。これは、通常、振り分け法と呼ばれている。
[0004] Therefore, it is necessary to sample powder equally from each part of the entire powder so that the obtained powder sample accurately represents the properties of the entire powder. Taking a powder sample separately in this manner is also called reduction, and various methods and devices have been developed for this purpose. For example, if powder is dropped and supplied to a container partitioned in the center by distributing the powder to the left and right sides of the container centered above the partition, the powder accumulated on the left and right sides of the partition will be distributed evenly. It is divided into two parts. By repeating such division many times, it is possible to take out only the amount of powder necessary for measurement, and the taken out powder becomes representative of the properties of the entire powder. This is usually called the distribution method.

【0005】また、偏平な皿状の容器を放射状の仕切り
で6分割しておき、この分割容器を回転させながら、容
器上方に粉体を落下供給すれば、各仕切り区画には、粉
体が均等に分割されて溜まることになり、ひとつの区画
内の粉体を測定試料として用いればよい。このような装
置は、回転分割器などと呼ばれている。さらにより優れ
た縮分法として、特開昭59−190639号公報には
、所定の軸心を中心に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器に
ついての開示が認められる。この先行技術では、ターン
テーブル上の試料の落下位置を半径方向に変更すること
により、縮分比を連続的に変えることが出来るようにな
っている。
[0005] Furthermore, if a flat, dish-shaped container is divided into six parts by radial partitions, and powder is dropped and supplied to the top of the container while rotating the divided container, the powder will be in each partition section. The powder is divided into equal parts and collected, and the powder in one compartment can be used as a measurement sample. Such a device is called a rotary divider or the like. As an even better reduction method, Japanese Patent Application Laid-Open No. 59-190639 discloses a rotating body that rotates around a predetermined axis, and a sample that is formed on this rotating body and that is to be reduced. It is recognized that the disclosure relates to a fractionator each having an aperture for selective passage according to the ratio. In this prior art, the reduction ratio can be continuously changed by changing the drop position of the sample on the turntable in the radial direction.

【0006】[0006]

【発明が解決しようとする課題】ところが、上記したよ
うな従来における粉体の分割採取方法および装置は、何
れも作業に時間がかかり、特に、大量の粉体からごく少
量の測定試料を分割採取する必要がある場合などは、非
常に手間がかかるという問題があった。前記した振り分
け法の場合、粉体を急速かつ大量に落下させて左右に振
り分けようとすると、左右の粉体量にバラツキが生じ易
いので、粉体を少しづつ落下供給して、注意深く左右に
振り分ける必要があり、作業時間が長くかかると同時に
、作業に技術を要する。また、例えば、全体で600g
の粉体から10gの測定試料を分割採取しようとする場
合、前記した振り分け法では、一度の操作では粉体を2
分の1に分割できるだけなので、合計6回もの操作を繰
り返す必要がある。
[Problems to be Solved by the Invention] However, the above-mentioned conventional methods and devices for dividing powder sampling take time, and in particular, it is difficult to divide a large amount of powder into a very small amount of sample to be measured. There is a problem in that it takes a lot of time and effort when it is necessary to do so. In the case of the distribution method described above, if you try to drop a large amount of powder rapidly and distribute it to the left and right, the amount of powder on the left and right tends to vary, so the powder is supplied by falling little by little and carefully distributed to the left and right. It takes a long time and requires skill to perform the work. Also, for example, 600g in total
When trying to separate and collect 10 g of measurement sample from 100% of powder, the above-mentioned distribution method will divide the powder into 2 parts in one operation.
Since it can only be divided into parts, it is necessary to repeat the operation six times in total.

【0007】前記した回転分割器では、上記振り分け法
に比べれば、能率的に作業が行えるが、600gから1
0gへの60分の1への分割を行うなど、分割比率が大
きくなると、かなり手間がかかることになる。これは、
分割容器の分割区画数は、前記した6個程度のものしか
なく、分割区画数を60個にも増やすことは、製造上非
常に困難であるとともに、分割区画毎のバラツキが大き
くなってしまうためである。また、回転分割器の回転数
を増やせば、単位時間当たりの粉体の落下量を増やして
も分割出来ることになるが、回転数を極端に大きくする
ことは機構的に難しいとともに、容器から粉体が飛び出
したり、分割区画毎の粉体量にもバラツキが出たりする
。このように、回転分割器で大きな比率の分割を迅速に
行おうとすると、粉体が均等に分割され難くなるため、
分割採取された測定試料が、粉体全体の性状を正確に代
表することが出来なくなり、測定精度が低下することに
なる。また、分割区画数の多い分割容器は、粉体の取り
出しが面倒であるとともに、作業後に粉体の付着した分
割容器を洗浄するのも非常に手間がかかる。
[0007] The above-mentioned rotary divider can work more efficiently than the above-mentioned distribution method, but it
If the division ratio becomes large, such as dividing into 1/60th of 0g, it will take a lot of effort. this is,
The number of divided compartments of the divided container is only about 6 as mentioned above, and increasing the number of divided compartments to 60 would be extremely difficult in terms of manufacturing, and the variation between divided compartments would increase. It is. In addition, if the rotation speed of the rotary divider is increased, it will be possible to divide the powder even if the amount of powder falling per unit time is increased, but it is mechanically difficult to increase the rotation speed extremely, and the powder is removed from the container. The body may jump out, and the amount of powder in each divided section may vary. In this way, if you try to divide a large ratio quickly with a rotary divider, it will be difficult to divide the powder evenly.
The divided measurement samples cannot accurately represent the properties of the entire powder, resulting in a decrease in measurement accuracy. In addition, in a divided container with a large number of divisions, it is troublesome to take out the powder, and it is also very time-consuming to clean the divided container with powder adhered to it after work.

【0008】さらに、従来の分割採取方法では、仕切り
が設けられた広い面積の容器の上方で、粉体を落下供給
するので、粉体が周囲に飛び散ったり、空気中に飛散し
たりして、周囲の環境や作業者に悪影響を与える心配が
ある。また、装置の設置および作業に場所を取ることに
もなる。特に、回転分割器で分割区画数を増やした場合
には、分割容器の面積が非常に大きくなるため、装置が
大型化して広い設置スペースが必要になる。装置全体あ
るいは作業空間を隔壁で囲んだりして、粉体が外部に飛
散しないようにすることも考えられるが、上記のような
広い面積を取る分割容器などの全体を囲むような隔離構
造は難しく、コスト的にも高くつくことになる。
[0008] Furthermore, in the conventional divided sampling method, the powder is supplied by dropping it above a large container with partitions, so the powder may scatter around or into the air. There is a concern that it may have a negative impact on the surrounding environment and workers. Moreover, the installation and operation of the device takes up space. In particular, when the number of divided compartments is increased using a rotary divider, the area of the divided container becomes very large, which increases the size of the device and requires a large installation space. It may be possible to surround the entire equipment or work space with a partition wall to prevent the powder from scattering to the outside, but it is difficult to create an isolation structure that encloses the entire device, such as a divided container that takes up a large area as mentioned above. , the cost will be high.

【0009】前記した特開昭59−190639号公報
の先行技術では、試料供給器を目盛り付き支持棒上で動
かして縮分比を決める為に自ずと可能な縮分比に制限が
有る。さらに、縮分比を決める一例の操作が煩雑である
ことを否めない。また、縮分後の不要試料についても、
壁を設けるなどして落下することを防止しているが、こ
の処置により、1回の縮分操作を行える試料量に制限が
生じるという問題がある。
In the prior art disclosed in Japanese Unexamined Patent Publication No. 59-190639, the reduction ratio is determined by moving the sample supply device on a graduated support rod, and therefore there is a limit to the possible reduction ratio. Furthermore, it cannot be denied that the operation for determining the reduction ratio is complicated. Also, regarding unnecessary samples after reduction,
Although a wall is provided to prevent the sample from falling, there is a problem in that this method limits the amount of sample that can be subjected to one reduction operation.

【0010】そこで、この発明の課題は、大量の粉体か
らごく少量の測定試料のみを、正確かつ迅速に分割採取
できるとともに、装置が小型で粉体が周囲に飛散するこ
ともない粉体の分割採取装置を提供することにある。
[0010] Therefore, an object of the present invention is to provide a powder sample that can accurately and quickly divide and collect only a small amount of measurement sample from a large amount of powder, and that also uses a small device and does not scatter the powder to the surroundings. The object of the present invention is to provide a divided collection device.

【0011】[0011]

【課題を解決するための手段】上記課題を解決する、こ
の発明にかかる粉体の分割採取装置は、軸心線を上下方
向にして設置される円筒を備えるとともに、筒体内部の
軸心線を含む中心部分を外れた位置に粉体を連続的に供
給落下させる手段を備え、前記筒体内部には、筒体の軸
心線を中心として回転し粉体の落下経路を横断する部分
に粉体通過部を有する回転体と、回転体の下方に設けら
れ一端が粉体の落下経路直下に開口し他端が筒体外部に
開口する粉体採取管と、遠心力の作用により前記回転体
の上面から振り落とされた粉体を回収する粉体回収路と
を備えてなる。
[Means for Solving the Problems] A powder dividing and sampling device according to the present invention that solves the above-mentioned problems is provided with a cylinder installed with its axial center line in the vertical direction, and an axial center line inside the cylinder. A means for continuously supplying and dropping the powder to a position apart from the central part including the cylindrical body is provided, and the inside of the cylindrical body includes means for rotating around the axis of the cylindrical body and crossing the falling path of the powder. A rotating body having a powder passage section, a powder collection tube provided below the rotating body and having one end opening directly below the falling path of the powder and the other end opening outside the cylindrical body; A powder collection path is provided to collect powder shaken off from the upper surface of the body.

【0012】筒体は、粉体を落下供給してから、測定試
料を分割採取するとともに残りの粉体を回収するまでの
作業を行う領域の全体を囲むように設置される。筒体は
、円筒形のものが、後述する回転体の設置や製造上の問
題から用いられる。粉体を供給落下させる上方部分では
、粉体が飛散しない程度の高さで、粉体の落下経路の周
囲を囲んでいれば、上面部分が開放されてあってもよい
が、この上面部分でも、粉体の通過部分を除いて、蓋を
しておけば、粉体の飛散をより確実に防止できる。
[0012] The cylindrical body is installed so as to surround the entire area in which operations are performed from supplying the powder by falling to dividing the sample to be measured and recovering the remaining powder. A cylindrical body is used as the cylinder due to problems in installation and manufacturing of the rotating body, which will be described later. In the upper part where the powder is supplied and dropped, the upper part may be open as long as the falling route of the powder is surrounded at a height that does not allow the powder to scatter. If the lid is closed except for the part where the powder passes, scattering of the powder can be more reliably prevented.

【0013】粉体を連続的に供給落下させる手段は、通
常の粉体処理装置で採用されている各種の落下供給手段
と同様のものでよく、ロート状のホッパーから自然落下
させたり、振動フィーダやスクリューフィーダ、コンベ
アなどの端部から落下させたりする。但し、粉体の落下
供給手段からの粉体の排出口は、筒体の上端よりも下方
に開口している必要がある。粉体の排出口と回転体の間
には、あまり間隔をあけないほうが、粉体が飛散する可
能性が少ない。粉体の落下供給手段自体にも、粉体の飛
散を防止するための密閉構造を備えておくのが好ましい
。粉体は、後述する粉体採取管の開口面積と同じ程度が
少し狭い範囲のみに限定して落下させるのが好ましい。 そのためには、粉体の落下供給手段の排出口の口径が、
粉体採取管の口径と同程度に設定しておけばよい。 単位時間当たりの粉体の落下供給量は、ホッパーの排出
口の口径を変えたり、振動フィーダ等の作動速度を調整
したりして変更することができる。
The means for continuously supplying and dropping the powder may be similar to various falling supply means employed in ordinary powder processing equipment, such as allowing it to fall naturally from a funnel-shaped hopper, or using a vibrating feeder. or from the end of a screw feeder, conveyor, etc. However, the powder discharge port from the powder drop supply means must open below the upper end of the cylindrical body. The less space there is between the powder outlet and the rotating body, the less likely the powder will be scattered. It is preferable that the powder falling supply means itself also be provided with a sealed structure to prevent the powder from scattering. It is preferable that the powder be allowed to fall only in an area that is the same as the opening area of a powder collection tube, which will be described later, but is slightly narrower. For this purpose, the diameter of the outlet of the falling powder supply means must be
It is sufficient to set the diameter to be approximately the same as the diameter of the powder sampling tube. The falling supply amount of powder per unit time can be changed by changing the diameter of the hopper outlet or adjusting the operating speed of the vibrating feeder or the like.

【0014】回転体は、粉体の落下供給手段の下方に設
置され、粉体が落下してくる経路を横断する面内で回転
する。回転体は、水平面内で回転しても、ある程度傾斜
した面内で回転してもよい。すなわち、回転体が、粉体
の落下を遮るような形で設けられていればよい。回転体
には、モータ等の回転駆動手段が接続される。回転駆動
手段は、回転体の下方あるいは上方の何れに設置しても
よいが、粉体の落下や回収の邪魔にならない位置、およ
び、落下してくる粉体が、回転機構の隙間に侵入しない
ような構造で設けておくのが好ましい。
[0014] The rotating body is installed below the falling powder supply means, and rotates in a plane that crosses the path through which the powder falls. The rotating body may rotate within a horizontal plane or may rotate within a plane that is inclined to some extent. In other words, it is sufficient that the rotating body is provided in such a manner as to block the powder from falling. A rotation driving means such as a motor is connected to the rotating body. The rotational drive means may be installed either below or above the rotating body, but it should be placed in a position where it does not interfere with the falling or collection of powder, and where falling powder does not enter into gaps in the rotating mechanism. It is preferable to provide such a structure.

【0015】回転体の回転数は、回転体の上に載った粉
体が、回転体の回転に伴う遠心力などで容易に振り落と
される程度の回転数以上である必要がある。具体的な回
転数の値は、回転体の径や粉体の落下流量などの処理条
件によっても異なるが、数10rpm から数100r
pm の範囲に設定でき、通常、百数10rpm 程度
が好ましい。
[0015] The rotational speed of the rotary body must be at least such that the powder placed on the rotary body is easily shaken off by the centrifugal force caused by the rotation of the rotary body. The specific value of the rotation speed varies depending on processing conditions such as the diameter of the rotating body and the falling flow rate of powder, but it ranges from several tens of rpm to several hundreds of rpm.
It can be set within a range of 100 rpm, and is usually preferably about 100 rpm.

【0016】回転体は、通常、円板状をなしているが、
円板以外の多角形その他の板形状であってもよい。回転
体と前記筒体の内壁との間には、回転体の上に載った粉
体が、回転体の外周から下方に落下できるだけの十分な
隙間を設けておくのが好ましい。回転体は、平坦な板状
のものであってもよいが、外周側に向けて低くなるよう
に傾斜した笠状もしくは円錐状のものであってもよい。 このように、回転体が外周に向けて傾斜していると、回
転体の上に載った粉体が滑り易くなり、回転体の上に粉
体が溜まったままにならず好ましい。
[0016] The rotating body is usually disc-shaped, but
It may be a polygon or other plate shape other than a disk. It is preferable to provide a sufficient gap between the rotating body and the inner wall of the cylindrical body so that the powder placed on the rotating body can fall downward from the outer periphery of the rotating body. The rotating body may be in the shape of a flat plate, or may be in the shape of a cap or cone that slopes downward toward the outer periphery. When the rotating body is tilted toward the outer periphery in this way, the powder placed on the rotating body becomes easy to slip, and powder does not remain accumulated on the rotating body, which is preferable.

【0017】回転体には、回転体の一部を切り欠いたり
、貫通穴をあけたりして、粉体通過部が設けられる。 粉体通過部は、回転体が回転したときに、粉体採取管の
上方を通過する位置に設けておく。粉体通過部の形状は
、回転体を円周方向に一定角度だけ切り欠いた扇形のも
のが、製造加工が容易で分割比率の設定も容易であるが
、一定幅の帯状の切り欠きや円形その他の孔状のもので
あってもよい。粉体通過部は、一個所に設けておくだけ
でもよいが、複数個所に設けておくことも可能である。
[0017] The rotating body is provided with a powder passage portion by cutting out a part of the rotating body or making a through hole. The powder passing section is provided at a position where the rotating body passes above the powder sampling tube when the rotating body rotates. The shape of the powder passage section is a sector-shaped one in which the rotating body is cut out at a certain angle in the circumferential direction, which is easy to manufacture and easy to set the division ratio. Other holes may also be used. The powder passing portion may be provided at only one location, but it is also possible to provide it at multiple locations.

【0018】粉体通過部の面積、特に切り欠きの開き角
度もしくは円周方向の幅を適当に設計することにより、
粉体の分割比率を任意に設定することができる。粉体通
過部の開き角度や幅が変更自在な構造になっていれば、
用途に応じて、粉体の分割比率を自由に変更できる。例
えば、扇形をなす粉体通過部の開き角度を変更するには
、2枚の半円板を中心で回動可能に組み合わせ、半円板
の重ね合わせ量を加減すれば、半円板同士の端辺間に形
成される扇形の隙間、すなわち粉体通過部の開き角度を
自由に調整することができる。また、粉体通過部を覆っ
てスライド自在な補助遮蔽板を取り付けておき、この補
助遮蔽板の位置を調節することによって、粉体通過部の
面積を変えるようにすることもできる。
By appropriately designing the area of the powder passage section, especially the opening angle or circumferential width of the notch,
The division ratio of powder can be set arbitrarily. If the opening angle and width of the powder passage section can be changed freely,
The powder division ratio can be changed freely depending on the application. For example, to change the opening angle of a sector-shaped powder passage section, you can combine two semicircular plates so that they can rotate around the center, and adjust the amount of overlap between the semicircular plates. The fan-shaped gap formed between the edges, that is, the opening angle of the powder passage section can be freely adjusted. Further, by attaching a slidable auxiliary shielding plate to cover the powder passage part and adjusting the position of this auxiliary shielding plate, the area of the powder passage part can be changed.

【0019】回転体の下方には、粉体採取管が設けられ
る。粉体採取管は、粉体の落下経路直下に開口させてお
く。粉体採取管の開口面積は、分割採取する粉体がスム
ーズに通過できる程度に設定しておけばよい。粉体採取
管の上端は、回転体の下面に接触しない程度に近接して
いるのが好ましい。粉体採取管の下端は、筒体の内部も
しくは外部で、採取した粉体を収容する採取容器の上方
に開口するように配置される。
A powder sampling tube is provided below the rotating body. The powder collection tube is opened directly below the powder falling path. The opening area of the powder collection tube may be set to such an extent that the powder to be collected in portions can smoothly pass through. It is preferable that the upper end of the powder collection tube be close enough to the lower surface of the rotating body to avoid contact with it. The lower end of the powder collection tube is arranged inside or outside the cylindrical body so as to open above a collection container that accommodates the collected powder.

【0020】筒体内で、粉体採取管の開口部分よりも下
方には、粉体採取管以外の場所に落下した粉体を回収す
る粉体回収路が設けられる。粉体は、回転体の外周もし
くは粉体通過部から下方に落下するので、粉体採取管の
開口部分よりも下方で、筒体内を閉塞する隔壁を設けて
おけば、この隔壁が粉体回収路の一部となる。粉体回収
路は、粉体が自然に落下もしくは滑り落ちて、一定の場
所にまとめて回収されるように、一定の方向に向かって
傾斜させておくのが好ましい。粉体回収路の下端は、回
収管などを経て筒体の外部まで延長されて、粉体の回収
容器の上方より回収される。
[0020] Inside the cylinder, a powder collection path is provided below the opening of the powder collection tube to collect powder that has fallen to a location other than the powder collection tube. Powder falls downward from the outer periphery of the rotating body or from the powder passage section, so if a partition is provided below the opening of the powder collection tube to close off the inside of the cylinder, this partition will collect the powder. become part of the road. Preferably, the powder collection path is inclined in a certain direction so that the powder naturally falls or slides and is collected all at a certain place. The lower end of the powder collection path is extended to the outside of the cylindrical body through a collection pipe or the like, and is collected from above the powder collection container.

【0021】この発明にかかる粉体の分割採取装置は、
前記したように、大量の粉体から粒度分布測定用の少量
の粉体を取り出す場合のほか、粒度分布以外の粉体の各
種性状を測定するための測定用試料の分割採取その他、
大量の粉体から、一定の比率の粉体を、粉体全体から均
等に採取する必要のある各種の用途にも利用できるもの
である。
[0021] The powder dividing and sampling device according to the present invention includes:
As mentioned above, in addition to taking out a small amount of powder for particle size distribution measurement from a large amount of powder, it can also be used to take divided samples for measurement to measure various properties of powder other than particle size distribution, etc.
It can also be used in various applications where it is necessary to uniformly collect a certain ratio of powder from a large amount of powder.

【0022】[0022]

【作用】回転体を回転させた状態で、回転体の上方に粉
体を連続的に落下させると、回転体のうち、粉体通過部
が粉体の落下経路を通過している間は、回転体の下方に
開口する粉体採取管に粉体が入っていく。しかし、回転
体のうち、粉体通過部以外の個所が粉体の落下経路を通
過している間は、回転体で粉体の落下が遮られるので、
粉体採取管には粉体が入らない。回転体で遮られた粉体
は、回転体の上に載るが、回転体の回転に伴う遠心力で
外周側に飛ばされ、回転体の外縁から下方に落下したり
、粉体通過部が粉体採取管の上方以外の位置にあるとき
に、粉体通過部から下方に落下したりする。回転体から
落下した粉体は、粉体回収路を経て回収される。
[Operation] When powder is continuously dropped above the rotating body while the rotating body is rotating, while the powder passage part of the rotating body is passing through the falling path of the powder, Powder enters the powder collection tube that opens below the rotating body. However, while parts of the rotating body other than the powder passing section are passing through the falling path of the powder, the rotating body blocks the powder from falling.
Powder does not enter the powder collection tube. Powder blocked by the rotating body is placed on top of the rotating body, but due to the centrifugal force that accompanies the rotation of the rotating body, the powder is blown to the outer periphery, and may fall downward from the outer edge of the rotating body, or the powder passing section may become powder-free. When it is in a position other than above the body collection tube, it may fall downward from the powder passage section. Powder that has fallen from the rotating body is collected through a powder collection path.

【0023】このようにして、連続して供給落下される
粉体のうち、回転体の粉体通過部が粉体採取管の真上を
通過する間に落下してくる粉体だけが粉砕採取管に入り
、その他の粉体は粉体回収路に回収されることになる。 したがって、回転体の1回転のうち、粉体通過部が粉体
採取管の真上を通過する時間と、それ以外の時間との比
率にしたがって分割された量の粉体のみが粉体採取管に
取り出されることになる。回転体の回転を繰り返せば、
各回転毎に、一定の比率で分割された量の粉体が粉体採
取管に取り出されるので、必要な量の粉体が取り出され
るまで、粉体の落下供給および回転体の回転を行えばよ
い。
In this way, among the continuously supplied and falling powder, only the powder that falls while the powder passing portion of the rotating body passes directly above the powder sampling tube is crushed and collected. The remaining powder will be collected in the powder recovery channel. Therefore, during one rotation of the rotating body, only the amount of powder that is divided according to the ratio of the time during which the powder passing section passes directly above the powder sampling tube and the other time passes through the powder sampling tube. It will be taken out. If the rotation of the rotating body is repeated,
For each rotation, a fixed amount of powder is taken out into the powder collection tube, so if the powder is supplied falling and the rotating body is rotated until the required amount of powder is taken out, good.

【0024】すなわち、この発明にかかる分割採取装置
では、回転体の円周に占める粉体通過部の幅もしくは開
き角度の比率に対応する比率で粉体を分割採取すること
ができるのである。したがって、大量の粉体から少量の
粉体のみを取り出す、分割比率が非常に大きな場合でも
、回転体の粉体通過部の大きさを変更するだけでよく、
分割比率の大小に関わらず、処理時間は一定である。そ
のため、従来の振り分け法や回転分割器のように、分割
比率が大きくなるほど、分割操作の繰り返し回数を増や
したり、特別に細かく分割された分割容器を作製したり
するような手間がかからない。
That is, with the divided sampling device according to the present invention, it is possible to divide and sample the powder at a ratio corresponding to the ratio of the width or opening angle of the powder passing portion to the circumference of the rotating body. Therefore, even when extracting only a small amount of powder from a large amount of powder at a very large division ratio, all you need to do is change the size of the powder passing section of the rotating body.
The processing time is constant regardless of the size of the division ratio. Therefore, as with conventional sorting methods and rotary dividers, the larger the division ratio, the less time and effort is required to increase the number of repetitions of the division operation or to create specially divided divided containers.

【0025】連続して供給落下される粉体を、回転体の
回転毎に、一定の比率で分割して一部の粉体のみを採取
するので、落下供給される粉体の最初の部分から最後の
部分までの、何れの部分についても同じように一部づつ
粉体が取り出されることになり、粉体全体から均等に試
料を採取することができる。しかも、比較的小さな回転
体を回転させるだけなので、従来の回転分割器における
分割容器に比べて、はるかに高速で回転させることがで
きる。その結果、1回転で分解採取する粉体の量を少な
くして分割採取の回数を多くすることができ、粉体の局
部的な性状の偏りの影響を極めて少なくできる。
[0025] Since the powder that is continuously supplied and fallen is divided at a fixed ratio every time the rotating body rotates and only a part of the powder is collected, from the first part of the powder that is supplied falling. The powder is taken out one by one in the same way from every part up to the last part, and samples can be taken evenly from the entire powder. Moreover, since only a relatively small rotating body is rotated, it can be rotated at a much higher speed than dividing containers in conventional rotary dividers. As a result, the amount of powder to be decomposed and collected in one rotation can be reduced and the number of divided collections can be increased, and the influence of local deviations in the properties of the powder can be extremely reduced.

【0026】[0026]

【実施例】ついで、この発明の実施例について図面を参
照しながら以下に説明する。図1は、装置の全体構造を
示している。粉体Pはロート状のホッパー10に収容さ
れている。ホッパー10の下端の排出口12が、円筒状
の筒体20の上端内側で、筒体20の中心から外側より
の位置に配置されている。筒体20は、基台70の上面
に起立設置されている。筒体20その他の、粉体Pと接
触する可能性のある構造部分は、ステンレスやセラミッ
クス等、錆びたり粉体Pに悪影響を与えたりすることの
少ない材料で作製しておくのが好ましい。筒体20の上
面は開放されているが、ホッパー10の排出口12を除
く筒体20の上面全体を覆う蓋を取り付けておくことも
できる。
Embodiments Next, embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the overall structure of the device. Powder P is contained in a funnel-shaped hopper 10. A discharge port 12 at the lower end of the hopper 10 is arranged inside the upper end of the cylindrical body 20 at a position outward from the center of the cylinder 20. The cylindrical body 20 is installed upright on the upper surface of the base 70. The cylinder 20 and other structural parts that may come into contact with the powder P are preferably made of materials that are unlikely to rust or adversely affect the powder P, such as stainless steel or ceramics. Although the top surface of the cylinder 20 is open, a lid may be attached to cover the entire top surface of the cylinder 20 except for the discharge port 12 of the hopper 10.

【0027】筒体20の内部で、ホッパー10の排出口
12の下方には概略円板状の回転体30が設けられてい
る。回転体30には、外周の一部を扇形の切り欠いた粉
体通過部32が形成されている。回転体30の中心には
、基台70の内部に装備されたモータ40から延長され
た回転軸42が連結されていて、回転体30が水平面内
で回転するようになっている。
Inside the cylindrical body 20, below the discharge port 12 of the hopper 10, a generally disc-shaped rotating body 30 is provided. The rotating body 30 has a powder passage section 32 formed by cutting out a part of the outer periphery in a fan shape. A rotating shaft 42 extending from a motor 40 installed inside the base 70 is connected to the center of the rotating body 30, so that the rotating body 30 rotates in a horizontal plane.

【0028】回転体30の下方で、ホッパー10の排出
口12の真下になる位置には、粉体採取管50の上端が
開口している。粉体採取管50の口径は、ホッパー10
の排出口12の口径と同じ程度に設定されている。粉体
採取管50は、下方に延び、筒体20を貫通して、筒体
20の外部で基台70の上部に下端が開口している。基
台70の上には粉体の採取容器52が配置されていて、
粉体採取管50から落下してくる粉体を受け取る。
The upper end of the powder collection tube 50 is open at a position below the rotating body 30 and directly below the discharge port 12 of the hopper 10. The diameter of the powder collection tube 50 is the same as that of the hopper 10.
The diameter is set to be approximately the same as the diameter of the discharge port 12 of. The powder collection tube 50 extends downward, passes through the cylindrical body 20, and has a lower end open at the upper part of the base 70 outside the cylindrical body 20. A powder collection container 52 is arranged on the base 70,
The powder falling from the powder collection tube 50 is received.

【0029】粉体採取管50の上端よりも下方に、筒体
20の内部を仕切る傾斜隔壁62が設けられている。傾
斜隔壁62は、粉体採取管50の取付位置側が高く反対
側が低くなるように傾斜している。前記した回転体30
に連結された回転軸42は、傾斜隔壁62を貫通して下
方に延びている。傾斜隔壁62の中心上部には、回転軸
42を挿通する筒状のカバー68が取り付けられており
、回転軸42と傾斜隔壁62の隙間に粉体が侵入しない
ようにしている。カバー68の高さは、回転体30から
落下した粉体が飛んでくる可能性のある位置よりも高く
しておくのが好ましい。傾斜隔壁62の最も低い個所付
近に、回収管64の上端が接続されて開口している。 回収管64は、傾斜隔壁62の下方で筒体20の外部ま
で延長されていて、回収管64の下端は、基台70の上
に設置された回収容器66の上方に開口している。
An inclined partition wall 62 is provided below the upper end of the powder collection tube 50 to partition the inside of the cylinder 20. The inclined partition wall 62 is inclined so that the side where the powder collection tube 50 is attached is higher and the opposite side is lower. The rotating body 30 described above
A rotating shaft 42 connected to the rotating shaft 42 extends downward through the inclined partition wall 62. A cylindrical cover 68 through which the rotating shaft 42 is inserted is attached to the upper center of the inclined partition wall 62 to prevent powder from entering the gap between the rotating shaft 42 and the inclined partition wall 62. It is preferable that the height of the cover 68 is higher than a position where powder particles falling from the rotating body 30 may fly. The upper end of the recovery pipe 64 is connected to and opens near the lowest point of the inclined partition wall 62 . The recovery pipe 64 extends below the inclined partition wall 62 to the outside of the cylindrical body 20 , and the lower end of the recovery pipe 64 opens above the recovery container 66 installed on the base 70 .

【0030】図2および図3に、回転体30の詳細な構
造を示している。回転体30は、2枚のほぼ半円状をな
す半円板34と36からなり、両半円板34、36を一
部重ねた状態で、中心に取付ネジ44が挿通され、取付
ネジ44が回転軸42の上端にねじ込み固定されている
。取付ネジ44の頭部と上に重ねたほうの半円板36と
の間、および、下側の半円板34と回転軸42の上端面
の間にはワッシャ46が挿入されている。取付ネジ44
を少し緩めた状態で、半円板34、36を別々に回動さ
せれば、半円板34と36の間に扇形をなす切り欠き状
の隙間すなわち粉体通過部32が形成される。半円板3
4、36の回動位置を変えれば、粉体通過部32の開き
角度θが、0°〜180°の範囲で自由に調整できる。 適当な開き角度θに設定した後、取付ネジ44を締め付
ければ、半円板34、36は回転軸42に固定される。
FIGS. 2 and 3 show the detailed structure of the rotating body 30. The rotating body 30 consists of two substantially semicircular semicircular plates 34 and 36, and with the semicircular plates 34 and 36 partially overlapped, a mounting screw 44 is inserted through the center. is screwed and fixed to the upper end of the rotating shaft 42. A washer 46 is inserted between the head of the mounting screw 44 and the upper semicircular plate 36, and between the lower semicircular plate 34 and the upper end surface of the rotating shaft 42. Mounting screw 44
If the semicircular plates 34 and 36 are rotated separately with the semicircular plates 34 and 36 slightly loosened, a fan-shaped notch-shaped gap, that is, a powder passage section 32, is formed between the semicircular plates 34 and 36. semicircular plate 3
By changing the rotational positions of 4 and 36, the opening angle θ of the powder passage section 32 can be freely adjusted within the range of 0° to 180°. After setting an appropriate opening angle θ, the semicircular plates 34 and 36 are fixed to the rotating shaft 42 by tightening the mounting screw 44.

【0031】以上のような構造を備えた分割採取装置の
作動について説明する。ホッパー10の排出口12から
粉体Pを連続的に落下させるとともに、回転体30を一
定の回転数で回転させる。回転体30の上に落下してき
た粉体Pは、粉体通過部32が通過している間は、粉体
通過部32を通って下方の粉体採取管50に入る。粉体
採取管50に入った粉体Pは、粉体採取管50の下端か
ら採取容器52に溜められる。採取容器52に溜まった
粉体P1 が目的の測定用試料などとなる。回転体30
のうち、粉体通過部32以外の部分が粉体Pの落下経路
にあるときには、粉体Pは回転体30の上に溜まること
になる。回転体30は回転しているので、粉体Pに遠心
力が加わり、粉体Pは回転体30の外周に飛ばされて下
方に落下する。また、回転体30の上を円周方向に滑っ
た粉体Pは、粉体通過部50が粉体採取管50の真上を
通過した後で、粉体通過部50から落下する場合もある
。 このようにして、粉砕採取管50以外の位置に落下した
粉体Pは、筒体20の内壁と傾斜隔壁62で囲まれた空
間を下方に落下もしくは滑り落ちて、傾斜隔壁62に開
口する回収管64に落ちていく。回収管64に落ちてき
た粉体P0 は、回収容器66に回収される。
The operation of the dividing sampling device having the above structure will be explained. The powder P is continuously dropped from the discharge port 12 of the hopper 10, and the rotating body 30 is rotated at a constant rotation speed. The powder P that has fallen onto the rotating body 30 passes through the powder passage section 32 and enters the powder collection tube 50 below while the powder P passes through the powder passage section 32 . The powder P that has entered the powder collection tube 50 is collected in the collection container 52 from the lower end of the powder collection tube 50. The powder P1 collected in the sampling container 52 becomes the target sample for measurement. Rotating body 30
When the part other than the powder passing section 32 is in the falling path of the powder P, the powder P will accumulate on the rotating body 30. Since the rotating body 30 is rotating, centrifugal force is applied to the powder P, and the powder P is blown to the outer periphery of the rotating body 30 and falls downward. Further, the powder P that has slipped on the rotating body 30 in the circumferential direction may fall from the powder passage section 50 after the powder passage section 50 passes directly above the powder collection tube 50. . In this way, the powder P that has fallen to a position other than the pulverized collection tube 50 falls or slides downward through the space surrounded by the inner wall of the cylinder 20 and the inclined partition wall 62, and is collected by opening at the inclined partition wall 62. It falls into pipe 64. The powder P0 that has fallen into the collection pipe 64 is collected into a collection container 66.

【0032】上記のような動作が、回転体30が1回転
する毎に繰り返され、ホッパー10から所定量の粉体P
が落下供給されれば、そのうちの一定の比率の粉体P1
 が採取容器52に溜まり、残りの粉体P0 は回収容
器66に溜まることになり、粉体の分割採取が完了する
。上記動作において、粉体の全量に対する分割採取され
た粉体P1 の割合は、回転体30における粉体通過部
32の切り欠き角度θによって決まる。すなわち、回転
体30が360°回転するうちの角度θの間だけ、粉体
採取管50に粉体Pが入るので、粉体P1 の分割比率
はθ/360°となる。例えば、6分の1に分割したい
場合には、θ=60°に設定すればよいことになる。
The above operation is repeated every time the rotating body 30 rotates once, and a predetermined amount of powder P is removed from the hopper 10.
is supplied falling, a certain proportion of the powder P1
is collected in the collection container 52, and the remaining powder P0 is collected in the collection container 66, completing the divided collection of the powder. In the above operation, the ratio of the dividedly sampled powder P1 to the total amount of powder is determined by the notch angle θ of the powder passing portion 32 in the rotating body 30. That is, since the powder P enters the powder collection tube 50 only during the angle θ of the 360° rotation of the rotating body 30, the division ratio of the powder P1 is θ/360°. For example, if you want to divide into 1/6, you can set θ=60°.

【0033】つぎに、この発明にかかる粉体の分割採取
装置と従来の方法による分割採取を行って、その性能を
比較した。この発明の実施例として、図1〜図3に示す
構造の分割採取装置を用い、回転体30の回転数を17
0rpm 、粉体通過部32の開き角度をθ=60°に
設定した。比較例1として、前記した振り分け法を用い
た。 比較例2として、6個の区画に分割された回転分割器を
用い、回転数を36rpm に設定した。
Next, dividing sampling was performed using the powder dividing apparatus according to the present invention and a conventional method, and the performance thereof was compared. As an embodiment of the present invention, a divided sampling device having the structure shown in FIGS. 1 to 3 is used, and the rotation speed of the rotating body 30 is set to
0 rpm, and the opening angle of the powder passing section 32 was set to θ=60°. As Comparative Example 1, the above-described distribution method was used. As Comparative Example 2, a rotation divider divided into six sections was used, and the rotation speed was set at 36 rpm.

【0034】600gの粉体から10gの測定用試料が
得られるまでの時間、すなわち粉体を60分の1に分割
して採取するのに必要な時間を測定した。
[0034] The time required to obtain 10 g of a measurement sample from 600 g of powder, ie, the time required to divide the powder into 1/60th pieces and sample them, was measured.

【0035】[0035]

【表1】[Table 1]

【0036】上記試験の結果をみれば、この発明の実施
例では、従来の方法に比べて、はるかに短時間で処理が
行えることが判る。つぎに、分割採取の精度を測定した
。粒度分布の異なる3種の粉体A〜Cを用意し、同じ粉
体に対して3回づつ分解採取を行い、各回毎に分割採取
された粉体試料の粒度分布を測定し、各メッシュの粒度
割合の標準偏差を算出した。
Looking at the results of the above test, it can be seen that the embodiment of the present invention can perform processing in a much shorter time than the conventional method. Next, the accuracy of split sampling was measured. Prepare three types of powders A to C with different particle size distributions, perform disassembly and sampling of the same powder three times, measure the particle size distribution of the powder sample divided and sampled each time, and calculate the particle size distribution of each mesh. The standard deviation of the particle size ratio was calculated.

【0037】[0037]

【表2】[Table 2]

【0038】上記試験の結果をみれば、この発明の実施
例では、従来の方法に比べて、測定された粒度分布のバ
ラツキが非常に少ないことが判る。これは、この発明の
装置では、常に、粉体全体から均等に試料となる粉末を
分割して採取できていることを意味している。つぎに、
作業中の粉塵発生量を、処理段階毎に作業者の感覚で5
段階評価した。評価点の高いものほど、粉塵の発生が多
いことになる。
Looking at the results of the above test, it can be seen that the variations in the measured particle size distribution in the examples of the present invention are much smaller than in the conventional method. This means that with the apparatus of the present invention, sample powder can always be equally divided and collected from the entire powder. next,
The amount of dust generated during work is estimated by the operator at each processing stage.
Graded evaluation. The higher the evaluation score, the more dust is generated.

【0039】[0039]

【表3】[Table 3]

【0040】上記試験の結果をみれば、この発明の実施
例では、従来の方法に比べて粉塵の発生が少なく、環境
を汚染したり、作業者に悪影響を与えたりする心配がな
いことが判る。
[0040] Looking at the results of the above tests, it can be seen that the embodiment of the present invention generates less dust than the conventional method, and there is no fear of contaminating the environment or adversely affecting workers. .

【0041】[0041]

【発明の効果】以上に述べた、この発明にかかる粉体の
分割採取装置によれば、粉体通過部を有する回転体を回
転させるだけの極めて簡単な動作で、大量の粉体から目
的とする少量の粉体のみを、粉体全体から均等に採取し
て、正確かつ迅速に分割採取することができる。
[Effects of the Invention] According to the powder dividing and sampling device according to the present invention as described above, a large amount of powder can be collected into a target by an extremely simple operation of rotating a rotating body having a powder passing section. Only a small amount of powder can be collected evenly from the entire powder, and can be divided and collected accurately and quickly.

【0042】しかも、作業に熟練や技術が全くいらず、
装置の外形や設置面積も小さくて済み、作業中に粉塵が
発生する心配も少ない。特に、従来の回転分割器のよう
に、大きな分割容器を回転させる必要がなく、小さな回
転体を回転させるだけでよいので、装置全体の構造が簡
単になり機械的な強度もそれほど要求されず、装置の製
造コストを削減することが可能になる。
[0042] Moreover, the work does not require any skill or technique;
The external size and installation area of the device are small, and there is less worry about dust being generated during work. In particular, unlike conventional rotary dividers, there is no need to rotate a large dividing container, and only a small rotating body needs to be rotated, which simplifies the overall structure of the device and does not require much mechanical strength. It becomes possible to reduce the manufacturing cost of the device.

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

【図1】  この発明の実施例を示す装置全体の構造図
[Fig. 1] Structural diagram of the entire device showing an embodiment of this invention

【図2】  回転体部分の平面図[Figure 2] Plan view of rotating body part

【図3】  図2のIII−III線における断面図[Figure 3] Cross-sectional view taken along line III-III in Figure 2

【符号の説明】[Explanation of symbols]

10  ホッパー 20  筒体 30  回転体 32  粉体通過部 40  モータ 50  粉体採取管 62  傾斜隔壁(粉体回収路) 64  回収管(粉体回収路) 10 Hopper 20 Cylindrical body 30 Rotating body 32 Powder passing section 40 Motor 50 Powder collection tube 62 Slanted bulkhead (powder collection path) 64 Recovery pipe (powder recovery path)

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】  軸心線を上下方向にして設置される円
筒を備えるとともに、筒体内部の軸心線を含む中心部分
を外れた位置に粉体を連続的に供給落下させる手段を備
え、前記筒体内部には、筒体の軸心線を中心として回転
し粉体の落下経路を横断する部分に粉体通過部を有する
回転体と、回転体の下方に設けられ一端が粉体の落下経
路直下に開口し他端が筒体外部に開口する粉体採取管と
、遠心力の作用により前記回転体の上面から振り落とさ
れた粉体を回収する粉体回収路とを備えてなることを特
徴とする粉体の分割採取装置。
1. A cylinder installed with its axis in the vertical direction, and means for continuously supplying and dropping powder to a position outside the center including the axis inside the cylinder, Inside the cylinder, there is a rotating body that rotates around the axis of the cylinder and has a powder passage section in a part that crosses the falling path of the powder, and a rotating body that is provided below the rotating body and has one end that is connected to the powder. It is equipped with a powder collection tube that opens directly below the falling path and the other end opens outside the cylinder, and a powder collection path that collects the powder shaken off from the upper surface of the rotating body by the action of centrifugal force. A powder division sampling device characterized by the following.
【請求項2】  回転体が半円状の板体を重ね合わせた
ものからなる請求項1記載の粉体の分割採取装置。
2. The powder dividing and collecting device according to claim 1, wherein the rotating body is formed by stacking semicircular plates.
JP3118861A 1991-05-23 1991-05-23 Powder divided sampling device Expired - Fee Related JP2741801B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3118861A JP2741801B2 (en) 1991-05-23 1991-05-23 Powder divided sampling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3118861A JP2741801B2 (en) 1991-05-23 1991-05-23 Powder divided sampling device

Publications (2)

Publication Number Publication Date
JPH04346051A true JPH04346051A (en) 1992-12-01
JP2741801B2 JP2741801B2 (en) 1998-04-22

Family

ID=14746952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3118861A Expired - Fee Related JP2741801B2 (en) 1991-05-23 1991-05-23 Powder divided sampling device

Country Status (1)

Country Link
JP (1) JP2741801B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010085257A (en) * 2008-09-30 2010-04-15 Nippon Mining & Metals Co Ltd Blending unit and automatic blending device
JP2010217033A (en) * 2009-03-17 2010-09-30 Ueno Engineering Ltd Condensation apparatus
CN111220351A (en) * 2020-01-15 2020-06-02 河北工业大学 Sampling device for researching movement locus of particles
GB2580723A (en) * 2019-05-02 2020-07-29 Renishaw Plc Powder handling apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102188478B1 (en) * 2019-03-01 2020-12-11 조광영 Particulate matter feeder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4937869A (en) * 1972-08-10 1974-04-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4937869A (en) * 1972-08-10 1974-04-08

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010085257A (en) * 2008-09-30 2010-04-15 Nippon Mining & Metals Co Ltd Blending unit and automatic blending device
JP4658176B2 (en) * 2008-09-30 2011-03-23 Jx日鉱日石金属株式会社 Compounding unit and automatic compounding device
JP2010217033A (en) * 2009-03-17 2010-09-30 Ueno Engineering Ltd Condensation apparatus
GB2580723A (en) * 2019-05-02 2020-07-29 Renishaw Plc Powder handling apparatus
CN111220351A (en) * 2020-01-15 2020-06-02 河北工业大学 Sampling device for researching movement locus of particles

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