JPH0341220B2 - - Google Patents
Info
- Publication number
- JPH0341220B2 JPH0341220B2 JP61214039A JP21403986A JPH0341220B2 JP H0341220 B2 JPH0341220 B2 JP H0341220B2 JP 61214039 A JP61214039 A JP 61214039A JP 21403986 A JP21403986 A JP 21403986A JP H0341220 B2 JPH0341220 B2 JP H0341220B2
- Authority
- JP
- Japan
- Prior art keywords
- sample
- tank
- suspension
- perforated plate
- microparticles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002245 particle Substances 0.000 claims description 32
- 239000000725 suspension Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 21
- 239000011859 microparticle Substances 0.000 claims description 19
- 238000005192 partition Methods 0.000 claims description 14
- 239000010419 fine particle Substances 0.000 claims description 9
- 230000010355 oscillation Effects 0.000 claims description 5
- 239000000523 sample Substances 0.000 description 43
- 239000011148 porous material Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 239000002612 dispersion medium Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000007873 sieving Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 238000010334 sieve classification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000010333 wet classification Methods 0.000 description 1
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は湿式法によつて数μｍ〜数十μｍの粒
径を有する微小粒子をその粒径（粒度）に分級す
る分級方法及び装置に関し、特に湿式法において
超音波振動を利用した分級方法及び装置に関す
る。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a classification method and apparatus for classifying microparticles having a particle size of several μm to several tens of μm into the particle size (particle size) by a wet method. In particular, the present invention relates to a classification method and apparatus using ultrasonic vibration in a wet method.
（従来の技術及び解決すべき問題点）
重合ビーズなどのプラスチツク球やセラミツク
の原料粉末などを分級する方法としては大気中で
行う乾式法と粒子を分散媒に懸濁させて行う湿式
法とに大別することができる。乾式法での篩によ
る分級法は最も簡単な方法であり、原料粒子が約
20μ以上ならばこの方法によるのが最も容易であ
る。湿式法での篩による分級法では細かい粒子に
対しては細かいアミ目の篩（最小5μ）を使用す
れば原理的に分級できるのであるが、このような
細かいアミ目の篩は目づまりをおこしやすく、実
際には分級できないも同じであり、他方、現在取
り扱われている原料の粒子は次第に細かくなり、
最近では数μ〜数10μという微小粒子が例えば電
子部品や医薬品として使用されており、このよう
な微小粒子を乾式法での篩による分級では精度よ
く、且つ効率よく行うことは不可能である。した
がつて、乾式での篩分けに代る分級方法として湿
式法による分級が行なわれ、例えば昭和電工(株)製
「シヨーデツクス」PS機は給液ポンプによつてシ
ーブ系に分散媒を充填し、次に試料供給ホツパー
から分散媒に懸濁した試料を供給することにより
微粒子は超音波振動、電磁振動の作用を受けて完
全に分散し、更に排液ポンプにより脈動流を受け
ながら吸引されて振動している各シーブ上に微粒
子が移動して分級するものであり、原理的には乾
式での篩分けと同じであるが、水流により、篩の
目塞りを防止している。しかしながら、この装置
では１回に10ｇ以上が入らず、しかもバツチ方式
であるため分級に数時間を要するという欠点があ
つた。また、徳寿工作所製のパルフアイナという
分級装置は音波を利用した分級装置があるが、乾
式によるため20μ以下のものの分級は困難であ
る。(Prior art and problems to be solved) There are two methods for classifying plastic spheres such as polymer beads and raw material powder for ceramics: a dry method carried out in the air, and a wet method carried out by suspending particles in a dispersion medium. It can be broadly classified. The dry method of classification using a sieve is the simplest method, and the raw material particles are approx.
If the thickness is 20μ or more, this method is easiest. In the wet sieve classification method, small particles can be classified in principle by using a fine mesh sieve (minimum 5μ), but such fine mesh sieves tend to clog easily. However, on the other hand, the particles of the raw materials currently handled are becoming finer and finer.
Recently, microparticles of several microns to several tens of microns have been used, for example, in electronic components and pharmaceuticals, and it is impossible to classify such microparticles accurately and efficiently using a dry sieve. Therefore, a wet classification method is used as an alternative to dry sieving. For example, the "Syodex" PS machine manufactured by Showa Denko K.K. uses a liquid supply pump to fill the sieve system with a dispersion medium. Next, by supplying the sample suspended in the dispersion medium from the sample supply hopper, the fine particles are completely dispersed under the action of ultrasonic vibrations and electromagnetic vibrations, and are then sucked up by the drainage pump while receiving a pulsating flow. Fine particles move onto each vibrating sieve and are classified. The principle is the same as dry sieving, but the water flow prevents the sieves from clogging. However, this device had the disadvantage that it could not handle more than 10 g at a time, and because it was a batch system, it took several hours for classification. In addition, there is a classification device called Parfuina manufactured by Tokuju Kosho that uses sound waves, but because it is a dry method, it is difficult to classify items smaller than 20μ.
本発明者はこれらの欠点を改良し新たな分級方
法及び装置を提供すべく種々検討した結果、分級
すべき微粒子の落下方向と篩のアミ目の平面が垂
直であることがアミ目の目づまりの原因であるこ
とに気付き、この点を改良すると共に湿式法で超
音波振動を利用することによつて精度よく、か
つ、効率よく分級する方法及び装置を見出し、本
発明を完成したもので、本発明の目的は数μｍ〜
数10μｍの微小粒子を精度よく高効率で分級する
分級方法及び装置を提供するにある。 As a result of various studies aimed at improving these drawbacks and providing a new classification method and device, the present inventor found that the falling direction of fine particles to be classified is perpendicular to the plane of the sieve mesh to prevent clogging of the sieve mesh. They realized that this was the cause of the problem, and in addition to improving this point, they discovered a method and device for classifying accurately and efficiently by using ultrasonic vibration in a wet method, and completed the present invention. The purpose of the invention is several μm ~
The object of the present invention is to provide a classification method and apparatus for classifying microparticles of several tens of micrometers with high precision and high efficiency.
（問題点を解決するための手段）
すなわち、本発明は微小粒子を分散させた試料
懸濁液を隔壁によつて試料槽と分級粒子回収槽と
に区分されている容器の試料槽に入れ、該懸濁液
を試料槽内に設けられている試料通過間隙を流下
せしめて前記隔壁に設けた透孔に取着けた多孔板
の前面に到らしめ、該部分において振動子の発振
によつて前記懸濁液に波動を生ぜしめて懸濁微粒
子に振動を与えて多孔板の孔より細かい微粒子を
孔を通過させて分級粒子回収槽に移動させること
を特徴とする微小粒子の分級方法であり、また、
かかる方法を実施するための装置として、隔壁に
よつて試料槽と分級粒子回収槽とに区分されてい
る容器からなる微小粒子の分級装置において、該
隔壁に透孔を穿設し、該透孔に多孔板を取着け、
前記試料槽内には試料懸濁液が前記多孔板の前面
に到らしめるように試料通過間隙を設けると共に
該多孔板の前面部分に試料懸濁液を滞留せしめる
ための筒状管を横設し、該筒状管の一端に振動子
を設置し、該振動子を発振回路等により作動せし
めることにより筒状管内部の試料懸濁液に波動を
生ぜしめて微粒子に振動を与えて多孔板の孔より
細かい微粒子を孔を通過させて分級粒子回収槽に
移動させることから成る微小粒子の分級装置であ
る。(Means for Solving the Problems) That is, the present invention puts a sample suspension in which microparticles are dispersed into a sample tank of a container that is divided into a sample tank and a classified particle collection tank by a partition, The suspension is caused to flow down through a sample passing gap provided in the sample tank and reach the front surface of a perforated plate attached to a through hole provided in the partition wall, where the suspension is caused to oscillate by an oscillator. A method for classifying microparticles, the method comprising: generating waves in the suspension to give vibrations to the suspended microparticles so that microparticles finer than the holes in the perforated plate are moved through the holes to a classified particle collection tank; Also,
As an apparatus for carrying out such a method, in a microparticle classification apparatus consisting of a container divided into a sample tank and a classified particle collection tank by a partition wall, a through hole is bored in the partition wall, and a through hole is formed in the partition wall. Attach a perforated plate to the
A sample passing gap is provided in the sample tank so that the sample suspension reaches the front surface of the perforated plate, and a cylindrical pipe for retaining the sample suspension is installed horizontally in the front part of the perforated plate. A vibrator is installed at one end of the cylindrical tube, and the vibrator is operated by an oscillation circuit or the like to generate waves in the sample suspension inside the cylindrical tube, which vibrates the particles and causes the porous plate to vibrate. This is a microparticle classification device that allows microparticles that are finer than the pores to pass through the pores and move them to a classified particle collection tank.
しかして、本発明における多孔板とは、微細な
孔を多数有するものであつて、通常は細かいアミ
目を有する篩が用いられる。孔径は分級する粒子
の大きさにより、例えば数μ〜数10μの範囲で適
宜選定される。また、この発明で使用する振動子
の振動数としては通常約15〜50kHzであるが、分
級すべき粒子の大きさによつて適宜変えることが
できる。 Therefore, the perforated plate in the present invention has a large number of fine holes, and a sieve having fine mesh is usually used. The pore diameter is appropriately selected, for example, in the range of several microns to several tens of microns, depending on the size of the particles to be classified. Further, the frequency of the vibrator used in this invention is usually about 15 to 50 kHz, but it can be changed as appropriate depending on the size of the particles to be classified.
ここでいう試料とは目的とする分級すべき微小
粒子自体を指すものであり、単に試験、実験或は
分析等のために採取した試料にとどまらない。し
たがつて、試料懸濁液とは分級すべき微小粒子を
分散した懸濁液を意味し、また、試料槽とは分級
すべき微小粒子を分散した懸濁液を入れる槽をい
うのである。 The sample here refers to the target microparticles themselves to be classified, and is not limited to simply a sample collected for a test, experiment, or analysis. Therefore, the sample suspension means a suspension in which the microparticles to be classified are dispersed, and the sample tank is a tank containing the suspension in which the microparticles to be classified are dispersed.
本発明について更に具体的に説明する。すなわ
ち、第１図は本発明を具体的化した装置である。
容器１を隔壁２によつて試料槽３分級回収槽４と
に区分する。隔壁の略中央部に透孔を穿設し、此
処に多孔板を取着ける。試料槽内には部材６、お
よび６′により試料懸濁液が前記多孔板の前面を
通過するように試料通過間隙７を形成し、また、
部材６の多孔板の前面は隔壁と同様に透孔を穿設
し、此処に筒状管８が横設されるように嵌合して
ある。そして、試料通過間隙は更に下方に延びて
下端で分級残分流出口９を形成している。前記筒
状管の一端には振動子１０が設置されており、こ
れは発信回路および電源１１に接続されている。
なお、この装置においては部材６′により試料槽
の試料入口より一旦水平部分を経由したのち試料
通過間隙に通じるようにしてあり、このようにす
ることにより多孔板の目ずまりをより一層防止す
ることができる。また、分級粒子回収槽を試料槽
とは別個に独立して分離できるようにすることに
より回収槽を取りはずして分級された粒子を回収
することも可能である。 The present invention will be explained in more detail. That is, FIG. 1 shows an apparatus embodying the present invention.
A container 1 is divided by a partition wall 2 into a sample tank 3 and a classification collection tank 4. A through hole is made approximately in the center of the partition wall, and a perforated plate is attached here. A sample passing gap 7 is formed in the sample tank by members 6 and 6' so that the sample suspension passes through the front surface of the perforated plate, and
The front surface of the perforated plate of the member 6 is provided with a through hole in the same manner as the partition wall, into which a cylindrical tube 8 is fitted horizontally. The sample passing gap further extends downward to form a classified residue outlet 9 at the lower end. A vibrator 10 is installed at one end of the cylindrical tube, and is connected to a transmitting circuit and a power source 11.
In this device, a member 6' is used to allow the sample from the sample inlet of the sample tank to pass through the horizontal part and then to the sample passage gap, which further prevents clogging of the perforated plate. be able to. Furthermore, by making the classified particle collection tank separate from the sample tank, it is also possible to remove the collection tank and collect the classified particles.
ところで、この装置を操作するに当つては分級
すべき試料懸濁液を試料層の入口より容器内に入
れると懸濁液は試料槽より試料通過間隙を通つて
筒状管及び多孔板を通して分級粒子回収槽を満た
し流出口より排出される。しかして、流出口に例
えば弁等を設けて流出速度をコントロールするこ
とによつて、多孔板の前面に微粒子を浮遊させ
る。しかる後、筒状管の一端にある振動子を発振
回路等によつて超音波振動を発生させ、試料溶液
に振動を与えると多孔板の前面に浮遊している微
粒子のうち多孔板の孔より細かい微粒子は粒子回
収槽の方に移行し、孔より大きな粒径を有する粒
子は下方に流下し、流出口より排出されることに
より目的とする粒度のものを粒子回収槽で採取す
ることができる。また、流出口に循環ポンプを設
置し、流出口より排出された懸濁液を再び試料容
器にもどし循環させることにより目的とする粒径
のものをより完全に採取することができる（第２
図参照）。あるいは、孔径の異なつた多孔板に変
更すると共に流出口より排出された懸濁液を再び
試料容器に入れ、同様の操作をくり返すことによ
つて、バツチ方式ではあるが試料を孔径に相当す
る粒径のものに分級することができる。 By the way, when operating this device, when the sample suspension to be classified is introduced into the container from the inlet of the sample layer, the suspension passes from the sample tank through the sample passage gap, passes through the cylindrical tube and the perforated plate, and is classified. It fills the particle collection tank and is discharged from the outlet. By controlling the outflow speed by providing a valve or the like at the outflow port, the particles are suspended in front of the porous plate. After that, the vibrator at one end of the cylindrical tube is used to generate ultrasonic vibrations using an oscillation circuit, etc., and when the sample solution is vibrated, some of the fine particles floating in front of the perforated plate are removed from the pores of the perforated plate. Fine particles move toward the particle collection tank, and particles with a particle size larger than the hole flow down and are discharged from the outlet, allowing the target particle size to be collected in the particle collection tank. . In addition, by installing a circulation pump at the outflow port and circulating the suspension discharged from the outflow port back into the sample container, particles of the target particle size can be collected more completely (second
(see figure). Alternatively, by changing to a perforated plate with a different pore size, placing the suspension discharged from the outlet into the sample container again, and repeating the same operation, the sample can be prepared in a batch manner, but the sample size corresponds to the pore size. It can be classified into particle size.
しかし、本発明の分級装置を第３図に示すよう
に多段式に設けることにより連続的に更に精度を
アツプして分級することが出来る。すなわち、本
発明の分級装置における目的物を採取した回収槽
の底部を次の第２段目の本発明の分級装置におけ
る試料槽の試料入口に連結し、第２段目の目的物
を採取した回収槽の底部を第３段目の試料槽の試
料入口にと順次に連結し、各段階における多孔板
の孔径を第１段より次第に小にすることにより精
度をアツプして連続的に分級することができる。 However, by providing the classification apparatus of the present invention in multiple stages as shown in FIG. 3, it is possible to continuously improve the accuracy of classification. That is, the bottom of the collection tank in which the target object was collected in the classifier of the present invention was connected to the sample inlet of the sample tank in the next second stage classifier of the present invention, and the target product in the second stage was collected. The bottom of the collection tank is sequentially connected to the sample inlet of the third stage sample tank, and the pore diameter of the perforated plate at each stage is gradually made smaller than that of the first stage to improve accuracy and perform continuous classification. be able to.
（効果）
以上述べたように、本発明は試料含有懸濁液の
落下方向と多孔板とを平行関係に設置し、試料懸
濁液側より超音波振動を与えることによりアミ目
の目つまりを生ずることなく、精度高く目的の粒
径の微粒子を採取容器に採取できる等の効果を生
ずることができる。(Effects) As described above, the present invention installs the perforated plate in parallel with the falling direction of the sample-containing suspension, and applies ultrasonic vibration from the sample suspension side to prevent clogging of the eye holes. It is possible to produce effects such as being able to collect fine particles of a desired particle size into a collection container with high precision without causing any particles to form.
第１図は本発明にかかる分級装置の説明図、第
２図は他の分級装置の説明図、第３図は本発明の
分級装置を多段に設けた多段分級装置の説明図で
ある。
１……容器、２……隔壁、３……試料槽、４…
…回収槽、５……多孔板、６，６′……部材、７
……試料通過間隙、８……円筒体、９……分級残
分流出口、１０……振動子、１１……発振回路お
よび電源、１２……循環ポンプ。
FIG. 1 is an explanatory diagram of a classifier according to the present invention, FIG. 2 is an explanatory diagram of another classifier, and FIG. 3 is an explanatory diagram of a multistage classifier in which the classifier of the present invention is provided in multiple stages. 1... Container, 2... Partition wall, 3... Sample tank, 4...
...Recovery tank, 5... Perforated plate, 6, 6'... Member, 7
... Sample passing gap, 8 ... Cylindrical body, 9 ... Classification residue outlet, 10 ... Vibrator, 11 ... Oscillation circuit and power supply, 12 ... Circulation pump.
Claims (1)
つて試料槽と分級粒子回収槽とに区分されている
容器の試料槽に入れ、該懸濁液を試料槽内に設け
られている試料通過間隙を流下せしめて前記隔壁
に設けた透孔に取り着けた多孔板の前面に到らし
め、該部分において振動子の発振によつて前記懸
濁液に波動を生ぜしめて懸濁微粒子に振動を与え
て多孔板の孔より細かい微粒子を孔を通過させて
分級粒子回収槽に移動させることを特徴とする微
小粒子の分級方法。 ２ 隔壁によつて試料槽と分級粒子回収槽とに区
分されている容器からなる微小粒子の分級装置に
おいて、該隔壁に透孔を穿設し、該透孔に多孔板
を取り着け、前記試料槽内には試料懸濁液が前記
多孔板の前面に到らしめるように試料通過間隙を
設けると共に該多孔板の前面部分に試料懸濁液を
滞留せしめるための筒状管を横設し、該筒状管の
一端に振動子を設置し、該振動子を発振回路等に
より作動せしめることにより筒状管内部の試料懸
濁液に波動を生ぜしめて微粒子に振動を与えて多
孔板の孔より細かい微粒子を孔を通過させて分級
粒子回収槽に移動させることから成る微小粒子の
分級装置。[Claims] 1. A sample suspension in which microparticles are dispersed is placed in a sample tank of a container that is divided into a sample tank and a classified particle collection tank by a partition, and the suspension is placed inside the sample tank. The sample is allowed to flow down through a sample passing gap provided in the partition wall, and reaches the front surface of a perforated plate attached to a through hole provided in the partition wall, and waves are generated in the suspension by the oscillation of a vibrator in this part. A method for classifying microparticles, which comprises shaking the suspended microparticles to cause the microparticles finer than the holes in a porous plate to pass through the holes and move to a classified particle collection tank. 2. In a microparticle classification device consisting of a container divided by a partition into a sample tank and a classified particle collection tank, a through hole is bored in the partition, a perforated plate is attached to the through hole, and the sample is A sample passing gap is provided in the tank so that the sample suspension reaches the front surface of the perforated plate, and a cylindrical tube for retaining the sample suspension is installed horizontally in the front part of the perforated plate, A vibrator is installed at one end of the cylindrical tube, and the vibrator is activated by an oscillation circuit or the like to generate waves in the sample suspension inside the cylindrical tube, giving vibrations to the fine particles, and causing them to pass through the holes in the perforated plate. A device for classifying fine particles, which consists of passing fine particles through holes and moving them to a classified particle collection tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21403986A JPS6372364A (en) | 1986-09-12 | 1986-09-12 | Method and apparatus for classifying fine particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21403986A JPS6372364A (en) | 1986-09-12 | 1986-09-12 | Method and apparatus for classifying fine particle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6372364A JPS6372364A (en) | 1988-04-02 |
| JPH0341220B2 true JPH0341220B2 (en) | 1991-06-21 |
Family
ID=16649261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21403986A Granted JPS6372364A (en) | 1986-09-12 | 1986-09-12 | Method and apparatus for classifying fine particle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6372364A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3965015B2 (en) * | 2000-06-16 | 2007-08-22 | 株式会社日本触媒 | Automatic powder classifier |
| US7740666B2 (en) | 2006-12-28 | 2010-06-22 | Kimberly-Clark Worldwide, Inc. | Process for dyeing a textile web |
| US7673516B2 (en) | 2006-12-28 | 2010-03-09 | Kimberly-Clark Worldwide, Inc. | Ultrasonic liquid treatment system |
| US9421504B2 (en) | 2007-12-28 | 2016-08-23 | Kimberly-Clark Worldwide, Inc. | Ultrasonic treatment chamber for preparing emulsions |
| JP6447460B2 (en) * | 2015-10-30 | 2019-01-09 | 住友金属鉱山株式会社 | Strainer equipment, slurry processing equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4964962A (en) * | 1972-10-25 | 1974-06-24 | ||
| JPS5237266A (en) * | 1975-09-19 | 1977-03-23 | Mitsubishi Metal Corp | Wet-type method for seiving powder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5472782U (en) * | 1977-11-01 | 1979-05-23 |
-
1986
- 1986-09-12 JP JP21403986A patent/JPS6372364A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4964962A (en) * | 1972-10-25 | 1974-06-24 | ||
| JPS5237266A (en) * | 1975-09-19 | 1977-03-23 | Mitsubishi Metal Corp | Wet-type method for seiving powder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6372364A (en) | 1988-04-02 |
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