JPH04243583A - Classifying apparatus - Google Patents
Classifying apparatusInfo
- Publication number
- JPH04243583A JPH04243583A JP8568391A JP8568391A JPH04243583A JP H04243583 A JPH04243583 A JP H04243583A JP 8568391 A JP8568391 A JP 8568391A JP 8568391 A JP8568391 A JP 8568391A JP H04243583 A JPH04243583 A JP H04243583A
- Authority
- JP
- Japan
- Prior art keywords
- classification
- guide
- classifying
- raw material
- fine powder
- 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
Links
- 239000000843 powder Substances 0.000 claims abstract description 44
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 239000006185 dispersion Substances 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 abstract description 16
- 238000000227 grinding Methods 0.000 abstract description 4
- 238000010298 pulverizing process Methods 0.000 description 6
- 239000008187 granular material Substances 0.000 description 5
- 239000011888 foil Substances 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
【0001】0001
【産業上の利用分野】本発明は,セラミックス業界やフ
ィラー業界で使用される化学品を粉砕する粉砕機に付属
の分級装置であって,分級原料を気流によって微粉と粗
粉に分離する分級装置に関するものである。[Industrial Application Field] The present invention is a classification device attached to a pulverizer for pulverizing chemicals used in the ceramics industry and filler industry, and is a classification device that separates classified raw materials into fine powder and coarse powder by air flow. It is related to.
【0002】0002
【従来の技術】分級装置は,粉砕機によって粉砕された
粉粒体を気流によって所要の粒度の粉体を選別し,製品
とすることを目的としており,その分級原理としては重
力分級,慣性力分級および遠心力分級に大別され,この
うち粉体の大量分級に好適な遠心力分級には,分級室の
形状を渦巻状にすることで気流を旋回させる自由渦式の
ものと,分級室内に設けられた回転羽根によって気流を
強制的に旋回させる強制渦のものと,これらふたつの合
成である自由渦と強制渦の共用式のものとがある。[Prior Art] The purpose of a classification device is to use airflow to sort powder and granules crushed by a crusher into powders of a desired particle size to produce products.The classification principle is gravity classification, inertia force It is broadly divided into classification and centrifugal force classification. Of these, centrifugal force classification, which is suitable for large-volume classification of powder, includes a free-vortex type in which the airflow is swirled by making the shape of the classification chamber spiral, and There are two types: forced vortex type, in which the airflow is forcibly swirled by rotating blades installed in the air, and type that uses both free vortex and forced vortex, which is a combination of these two types.
【0003】また,分級装置には,粉砕機によって粉砕
された粉粒体を導いて粉砕機とは別置の独立して設けた
ものと,粉砕機に付属して設けられ粉砕室にある粉粒体
を気流搬送によって分級室に導入して分級する付属型の
ものとがあるが,後者のタイプの用途も広汎であり,図
5に示す竪型粉砕機や図6に示す遠心流動粉砕装置に付
属して多く用いられている。[0003] In addition, there are two types of classification devices: those installed separately from the crusher to guide the powder and granules crushed by the crusher, and those installed separately from the crusher to guide the powder and granules crushed by the crusher, and those installed attached to the crusher to guide the powder and granules in the crushing chamber. There is an attached type that classifies particles by introducing them into a classification chamber by air conveyance, but the latter type has a wide range of applications, such as the vertical crusher shown in Figure 5 and the centrifugal fluid crusher shown in Figure 6. It is often used as an accessory.
【0004】そして,最近では,粉砕原料の多様化や超
微粉の需要の拡大とともに製品の粒径分布に対する要求
が高度化してきており,平均粒径を指定するばかりでな
く平均粒径よりはるかに細かい指定粒径の通過量をある
量比以内に留める製品を要求されることが次第に多くな
ってきた。この場合を例示すると,たとえば,図7に示
される粒径分布曲線で曲線Xの原料を平均粒径Dp50
に粉砕し,かつ0.1μmパスが1%以下である製品が
要求されるとき(たとえば曲線Y),実際に得た粉砕後
の製品が曲線Zになったとき,平均粒径は満足されたが
,0.1μmパスが1.1%となり1%を越えるので不
良品となっていたケースが生じた。[0004] Recently, along with the diversification of pulverized raw materials and the expansion of demand for ultrafine powder, the requirements for particle size distribution of products have become more sophisticated. There is an increasing demand for products that keep the amount of fine particles passing through within a certain ratio. To illustrate this case, for example, in the particle size distribution curve shown in FIG.
When a product is required that is pulverized and has a 0.1 μm pass of 1% or less (for example, curve Y), when the actually obtained product after pulverization becomes curve Z, the average particle size is satisfied. However, since the 0.1 μm pass was 1.1%, exceeding 1%, there were cases where the product was defective.
【0005】[0005]
【発明が解決しようとする課題】以上述べたように,製
品の平均粒径がある程度細かく,しかも微粉の混入割合
があまり多くないという過酷な粉砕条件を負わされた時
には,通常の分級機を付属した粉砕機ではこれらの条件
を達成することができず,過粉砕となる等の問題があっ
た。[Problems to be Solved by the Invention] As mentioned above, when a product is subjected to harsh pulverization conditions where the average particle size is fine to a certain extent and the proportion of fine powder mixed in is not very high, a regular classifier is attached. These conditions could not be achieved with the conventional crusher, which caused problems such as over-grinding.
【0006】[0006]
【課題を解決するための手段】そこで,上記の課題を解
決するために,本発明の分級装置では,竪型粉砕機また
は遠心流動粉砕装置の上部に配設され,分級室の中心に
回転可能に軸支された中空管からなる駆動軸とその周囲
に一体的に回転する円周複数個の分級羽根とを有し,該
中空管の上方には微粉の排出管を備え,該分級羽根の外
周に分級用空気に旋回を与えるための竪軸回りに回動自
在なガイドベーンを円周複数個該中空管と同心円状に配
設するとともに,該ガイドベーンの下部に該ガイドベー
ンに連接して略逆截頭円錐台形状のガイドコーンを備え
た分級装置であって,前記分級羽根およびガイドベーン
を被覆する水平円板状の分散板を該中空管に固設し,か
つ,該分散板上に垂直で半径方向放射状に延在する円周
複数個のスクレーパを固設するとともに,該分散板およ
びスクレーパの直上の分級装置のケーシングに粉砕原料
の供給管を配設し,前記ガイドコーンの逆截頭円錐面に
上昇気流を通すスリットを円周複数個設けた構成とした
。[Means for Solving the Problems] Therefore, in order to solve the above problems, the classification device of the present invention is arranged at the top of a vertical crusher or centrifugal fluid crusher, and is rotatable at the center of the classification chamber. It has a drive shaft made of a hollow tube that is pivotally supported by a drive shaft, and a plurality of circumferential classification blades that rotate integrally around the drive shaft.A fine powder discharge pipe is provided above the hollow tube, and the A plurality of guide vanes rotatable around a vertical axis for giving swirl to the classification air are disposed on the outer periphery of the blade concentrically with the hollow tube, and a plurality of guide vanes are provided on the lower part of the guide vane. A classifying device equipped with a guide cone in the shape of a substantially inverted truncated cone connected to the hollow tube, wherein a horizontal disc-shaped dispersion plate covering the classification blade and the guide vane is fixed to the hollow tube, and , a plurality of circumferential scrapers extending perpendicularly and radially in the radial direction are fixed on the distribution plate, and a supply pipe for the pulverized raw material is arranged in the casing of the classification device directly above the distribution plate and the scraper, The inverted truncated conical surface of the guide cone is provided with a plurality of slits around its circumference for passing upward airflow.
【0007】[0007]
【作用】本発明の分級装置においては,原料は供給管を
経由して分級室に供給され,回転する分散板上へ落下す
る。分散板上の原料は遠心力と分散板上に設けたスクレ
ーパの掻き寄せ作用とによりスパイラル状に外方へ向か
い,ほぼ円周上均等に分散板の外周から溢流して下方へ
落下する。このとき,原料の大半の粗粒は重力作用でそ
のままケーシング内面に沿って下方に落下するが,落下
する原料中に含有される微粉は,分級装置の下方にある
粉砕機からの上昇気流に巻き込まれて旋回しガイドベー
ンを通り分級羽根に向かう。ここで,回転する分級羽根
によって分級作用を受け,微粉中の粗粉は分級羽根によ
って叩き落とされて分級羽根を通過することはできず,
下方のガイドコーンの壁面をスパイラル状に滑って落下
するか,または,最外側のケーシング内面に沿って落下
し粉砕機へ向かう。このとき,ガイドコーンの壁面に沿
ってスパイラル状に滑って落下する粗粉の中に含まれる
微粉は,ガイドコーンの斜面に円周複数個設けられたス
リットを数回横切ることになり,この際にスリットから
上昇して来る気流に再び随伴して再度分級羽根に向かっ
て分級作用を受ける。分級羽根で分級作用を受けた分級
点以下の微粉は分級羽根を通過して中空管の中を通過し
,微粉の排出管から機外へ排出される。粉砕機では前述
のニューフィードの粗粒と分級後の粗粉が一緒になって
ともに粉砕作用を受け,比較的細かい粒径になった粉粒
体のみ上昇気流に乗ってガイドベーンに向かい,上に述
べたと同様に分級羽根で分級される。[Operation] In the classification apparatus of the present invention, the raw material is supplied to the classification chamber via the supply pipe and falls onto the rotating distribution plate. The raw material on the distribution plate spirals outward due to the centrifugal force and the scraping action of the scraper provided on the distribution plate, overflows from the outer periphery of the distribution plate almost evenly around the circumference, and falls downward. At this time, most of the coarse particles of the raw material fall downward along the inner surface of the casing due to the action of gravity, but the fine powder contained in the falling raw material is caught in the upward airflow from the crusher located below the classification device. The liquid then rotates and passes through the guide vane to the classification vane. Here, the rotating classification blade receives a classification action, and the coarse powder in the fine powder is knocked off by the classification blade and cannot pass through the classification blade.
It slides down the wall of the lower guide cone in a spiral pattern or falls along the inner surface of the outermost casing and heads toward the crusher. At this time, the fine powder contained in the coarse powder that spirally slides and falls along the wall of the guide cone crosses the slits provided several times around the circumference on the slope of the guide cone several times. The airflow that rises from the slit is accompanied again by the airflow and is again subjected to the classification action toward the classification blade. The fine powder below the classification point that has been classified by the classification blade passes through the classification blade, passes through the hollow tube, and is discharged outside the machine from the fine powder discharge pipe. In the crusher, the aforementioned coarse particles of New Feed and the coarse powder after classification are both subjected to the crushing action, and only the powder with a relatively fine particle size rides on the upward airflow and heads toward the guide vane, where it is transported upward. It is classified using a classification blade in the same way as described above.
【0008】[0008]
【実施例】以下,図面に基づいて本発明の詳細について
説明する。図1〜図4は本発明に係る実施例を示し,図
1は分級装置の縦断面図,図2は図1のII−II視の
平面図,図3は図1のIII−III視の平面図,図4
はガイドコーンの他の実施例を示す斜視図である。図中
の実線矢印は原料の流れ,点線矢印は気流の流れを示す
。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be explained below based on the drawings. 1 to 4 show embodiments of the present invention, in which FIG. 1 is a longitudinal sectional view of a classification device, FIG. 2 is a plan view taken from II-II in FIG. 1, and FIG. 3 is a plan view taken from III-III in FIG. 1. Plan view, Figure 4
FIG. 3 is a perspective view showing another embodiment of the guide cone. The solid arrows in the figure indicate the flow of raw materials, and the dotted arrows indicate the flow of airflow.
【0009】図において,分級装置2は竪型粉砕機1a
や遠心流動粉砕装置1bなどの粉砕機1の直上に立設さ
れ,粉砕機1と同心円状に中空管3が上下一対の軸受4
,5に軸承され回転自在に配設される。軸受4,5は分
級装置2のケーシング2aの中央上部に立設する架台6
に嵌装固設され,中空管3の上端にはチエンホイル7が
取り付けられ,ローラチエン8を介して可変速電動機9
の出力軸に取り付けられたチエンホイル10によって回
転駆動される。一方,中空管3の下方は分級室に垂下し
,図3に示すように,水平多段の円板11上に挾在し垂
直半径方向放射状に延在する複数個の分級羽根12が取
り付けられ,分級羽根12の外周にはサポート14aを
介してケーシング2aに固設されるガイドコーン14の
上端フランジに固設される回転軸13a回りに回動調節
できるガイドベーン13が複数個配列され,その傾きは
分級羽根12の回転方向に同調して流れ込む気流を旋回
流とする方向にセットされる。In the figure, the classification device 2 is a vertical crusher 1a.
A hollow tube 3 is installed directly above a crusher 1 such as a centrifugal fluid crusher 1b, and a hollow tube 3 is connected to a pair of upper and lower bearings 4 concentrically with the crusher 1.
, 5 and is rotatably disposed. The bearings 4 and 5 are mounted on a pedestal 6 erected at the upper center of the casing 2a of the classifier 2.
A chain wheel 7 is attached to the upper end of the hollow tube 3, and a variable speed electric motor 9 is connected via a roller chain 8.
It is rotationally driven by a chain wheel 10 attached to the output shaft of. On the other hand, the lower part of the hollow tube 3 hangs down into the classification chamber, and as shown in FIG. A plurality of guide vanes 13 are arranged on the outer periphery of the classification blade 12 and can be rotated around a rotating shaft 13a fixed to the upper end flange of a guide cone 14 fixed to the casing 2a via a support 14a. The inclination is set in a direction that makes the airflow flowing in synchronization with the rotation direction of the classification blade 12 into a swirling flow.
【0010】ガイドコーン14の円錐面には,図1の実
施例では,斜面に沿って下方へ向かうスリット14bが
円周等間隔に穿孔されており,このスリット14bから
は下方からの気流がガイドコーン14の内部へ侵入する
。また,スリットの他の実施例としては,図4に示すよ
うに,円錐面に水平に複数段千鳥に配列したものが考え
られる。いずれの場合にもガイドコーン14の円錐斜面
をスパイラル状に滑り落ちる粗粉のうちの微粉分を,ス
リット14bからガイドコーン14の内部に侵入してく
る上昇気流に乗せて,再び分級羽根12まで運び分級作
用を受けたあとに回収するのがスリット14bの主な役
目である。In the embodiment shown in FIG. 1, the conical surface of the guide cone 14 is provided with slits 14b extending downward along the slope at equal intervals around the circumference, and the airflow from below is guided through the slits 14b. Invades the inside of the cone 14. Further, as another example of the slits, as shown in FIG. 4, it is conceivable that the slits are arranged in a staggered manner in multiple stages horizontally on the conical surface. In either case, the fine part of the coarse powder that spirally slides down the conical slope of the guide cone 14 is carried by the upward air current entering the guide cone 14 from the slit 14b to the classification blade 12 again. The main role of the slit 14b is to collect the particles after they have been subjected to the classification action.
【0011】また,分級羽根12と固定のガイドベーン
13の直上には,両者を被覆する程度の大きさの円板状
の分散板15と分散板15上に分散板15と直交する半
径方向放射状に伸びた複数個のスクレーパ15aが円周
等分に配列され,中空管3とともに回転される。そして
,分散板15およびスクレーパ15aの直上のケーシン
グ2aの1点には粉砕原料の供給管16が設けられる。
また,中空管3の上端の上には架台3およびチエンホイ
ル7の保護カバー7aに連接して,空気および微粉の排
出管17が設けられ,図示しない吸引ファンに接続され
る。なお,中空管3の底部には円錐台形状の蓋3aを設
けて気流のショートパスを防いでおく。Further, directly above the classification vane 12 and the fixed guide vane 13, there is a disc-shaped dispersion plate 15 having a size that covers both, and a radial dispersion plate 15 arranged in a radial direction orthogonal to the dispersion plate 15. A plurality of scrapers 15a extending from the center are arranged equally on the circumference and are rotated together with the hollow tube 3. A supply pipe 16 for the pulverized raw material is provided at one point in the casing 2a directly above the distribution plate 15 and the scraper 15a. Furthermore, an air and fine powder discharge pipe 17 is provided above the upper end of the hollow tube 3 and connected to the pedestal 3 and the protective cover 7a of the chain foil 7, and is connected to a suction fan (not shown). Note that a truncated conical lid 3a is provided at the bottom of the hollow tube 3 to prevent short paths of airflow.
【0012】次に上記のように構成された分級装置2の
作動について説明する。原料を供給管16を通じて分級
室内に投入すると,可変速電動機9によって回転駆動さ
れる分散板15の上に落下した原料はスクレーパ15a
と分散板15に働く遠心力によりほぼ全周に等分に分散
され,分散板15を溢流して図1に示すように大部分の
大塊のものは矢印Aのように下方へ落下する。しかし,
原料中に含有する微粉は吸引ファン(図示せず)の吸引
力によってガイドベーン13へ向かって上昇する気流に
随伴して矢印Bのように分級羽根へ向かい分級される。
分級の結果,分級点以下の微粉は中空管3の内部を通っ
て微粉排出管17より排出されるが(矢印D),分級点
以上の粗粉は分級羽根12に排除され矢印Cのようにガ
イドコーン14の内部を滑り落ち,粉砕機1へ向かう。
ところが,本発明の分級装置ではガイドコーン14にス
リット14bが設けてあるので,粉砕機1からの上昇気
流の1部はこのスリット14bからガイドコーン14内
へ侵入し,円錐斜面をスパイラル状に滑り落ちる粗粉の
中に含有する微粉を舞い上げて随伴させ,再びガイドベ
ーン13を経由して分級羽根12へ向かい再び分級作用
を受けるので,微粉分を粉砕機1へ向かうことを防止す
る。このようにして,上に述べた矢印Aの大塊の原料と
ガイドコーン14の斜面を落下した粗粉は粉砕機で粉砕
され,粉砕後の粉粒体はガイドベーン13やガイドコー
ン14内を通る気流に乗って分級羽根12に向かい分級
作用を受ける。分級後の挙動は前述したとおりである。
分級点の調整は分級羽根12の回転数制御が主であり,
補助手段としてガイドベーン13の傾き角の変更がある
が,この作業は運転を中断して手動により変更しなけれ
ばならないので煩雑であり多用できない。ガイドベーン
13の傾き角の変更を運転中,かつ,自動的に変更した
い場合が頻繁に起こる実機においては,ガイドベーン1
3の回転軸13aを軸承する軸受13bの代りにマイク
ロモータを使用して遠隔操作で変更する。Next, the operation of the classification device 2 constructed as described above will be explained. When the raw material is introduced into the classification chamber through the supply pipe 16, the raw material that falls onto the dispersion plate 15 which is rotationally driven by the variable speed electric motor 9 is scraped by the scraper 15a.
The centrifugal force acting on the dispersion plate 15 causes the particles to be equally distributed almost all around the circumference, overflowing the dispersion plate 15, and as shown in FIG. 1, most of the large lumps fall downward as indicated by arrow A. but,
The fine powder contained in the raw material is accompanied by an air current rising toward the guide vane 13 by the suction force of a suction fan (not shown), and is then directed toward the classification blade as shown by arrow B, where it is classified. As a result of classification, fine powder below the classification point passes through the inside of the hollow tube 3 and is discharged from the fine powder discharge pipe 17 (arrow D), but coarse powder above the classification point is rejected by the classification blade 12 as shown by arrow C. It slides down inside the guide cone 14 and heads toward the crusher 1. However, in the classification device of the present invention, since the guide cone 14 is provided with the slit 14b, a portion of the rising air from the crusher 1 enters the guide cone 14 through the slit 14b and slides down the conical slope in a spiral shape. The fine powder contained in the coarse powder is stirred up and entrained, and then passes through the guide vanes 13 to the classification blades 12 where it is again subjected to the classification action, thereby preventing the fine powder from going to the crusher 1. In this way, the large lump of raw material indicated by the arrow A mentioned above and the coarse powder that fell down the slope of the guide cone 14 are crushed by the crusher, and the crushed powder passes through the guide vanes 13 and the guide cone 14. Riding on the passing air current, it heads toward the classification blade 12 and receives a classification action. The behavior after classification is as described above. The adjustment of the classification point is mainly done by controlling the rotation speed of the classification blade 12.
As an auxiliary means, changing the inclination angle of the guide vane 13 is possible, but this operation requires interrupting operation and changing manually, which is complicated and cannot be used frequently. In an actual machine where it is often desired to change the inclination angle of the guide vane 13 automatically during operation, the inclination angle of the guide vane 13 is often changed automatically.
In place of the bearing 13b that supports the rotating shaft 13a of No. 3, a micromotor is used and the change is made by remote control.
【0013】以上のようにして,本発明の分級装置にお
いては,原料中に含まれる微粉を予め予備分級の形で分
級装置で取り去った後,分級後の粗粉をもう一度ガイド
コーンのスリットからの上昇気流に乗せて粗粉中に含ま
れる微粉を回収しており,残りの粒状物および粗粉のみ
を粉砕機に供給するので,過粉砕を防止するのに最適で
あり,たとえば,図7に示す曲線Yのように,平均粒径
も比較的細かく,かつ,微粉の混入の少ない粒径分布の
狭いシャープな所望の粒度構成を有する製品を得ること
ができる。As described above, in the classification device of the present invention, after the fine powder contained in the raw material is removed in advance in the form of preliminary classification by the classification device, the coarse powder after classification is once again passed through the slit of the guide cone. The fine powder contained in the coarse powder is collected on the updraft, and only the remaining granules and coarse powder are fed to the crusher, which is ideal for preventing over-grinding. As shown by curve Y, it is possible to obtain a product having a desired particle size structure with a relatively small average particle size, a narrow and sharp particle size distribution with little contamination of fine powder.
【0014】[0014]
【発明の効果】本発明の分級装置においては,原料に含
有する微粉を粉砕する以前に確実に回収して粉砕に供す
るので,過粉砕が防止され,粒径分布の狭い粒のそろっ
たシャープな微粉が精粉として得られる。また,過粉砕
が防止される結果粉砕効率が向上する。[Effects of the Invention] In the classification device of the present invention, the fine powder contained in the raw material is reliably collected and used for pulverization before being pulverized, so over-pulverization is prevented and sharp particles with a narrow particle size distribution are produced. Fine powder is obtained as fine powder. Furthermore, as over-grinding is prevented, the crushing efficiency is improved.
【図1】本発明の実施例を示す分級装置の縦断面図であ
る。FIG. 1 is a longitudinal sectional view of a classification device showing an embodiment of the present invention.
【図2】図1のII−II視の平面図である。FIG. 2 is a plan view taken along line II-II in FIG. 1;
【図3】図1のIII−III視の平面図である。FIG. 3 is a plan view taken along III-III in FIG. 1;
【図4】本発明の分級装置のガイドコーンの他の実施例
を示す斜視図である。FIG. 4 is a perspective view showing another embodiment of the guide cone of the classification device of the present invention.
【図5】従来の竪型粉砕機の縦断面図である。FIG. 5 is a longitudinal cross-sectional view of a conventional vertical crusher.
【図6】従来の遠心流動装置の縦断面図である。FIG. 6 is a longitudinal sectional view of a conventional centrifugal flow device.
【図7】粉砕後の実施例を示す粒度分布曲線図である。FIG. 7 is a particle size distribution curve diagram showing an example after pulverization.
1 粉砕機 1a 竪型粉砕機 1b 遠心流動粉砕装置 2 分級装置 2a ケーシング 3 中空管 4 軸受 5 軸受 6 架台 7 チエンホイル 8 ローラチエン 9 可変速電動機 10 チエンホイル 11 円板 12 分級羽根 13 ガイドベーン 13a 回転軸 13b 軸受またはマイクロモータ 14 ガイドコーン 14a サポート 14b スリット 15 分散板 15a スクレーパ 16 供給管 17 排出管 1 Crusher 1a Vertical crusher 1b Centrifugal fluid milling device 2 Classification device 2a Casing 3 Hollow tube 4 Bearing 5 Bearing 6 Mount 7 Chain foil 8 Roller chain 9 Variable speed electric motor 10 Chain foil 11 Disk 12 Classifying blade 13 Guide vane 13a Rotation axis 13b Bearing or micro motor 14 Guide cone 14a Support 14b Slit 15 Dispersion plate 15a Scraper 16 Supply pipe 17 Discharge pipe
Claims (1)
上部に配設され,分級室の中心に回転可能に軸支された
中空管からなる駆動軸とその周囲に一体的に回転する円
周複数個の分級羽根とを有し,該中空管の上方には微粉
の排出管を備え,該分級羽根の外周に分級用空気に旋回
を与えるための竪軸回りに回動自在なガイドベーンを円
周複数個該中空管と同心円状に配設するとともに,該ガ
イドベーンの下部に該ガイドベーンに連接して略逆截頭
円錐台形状のガイドコーンを備えた分級装置であって,
前記分級羽根およびガイドベーンを被覆する水平円板状
の分散板を該中空管に固設し,かつ,該分散板上に垂直
で半径方向放射状に延在する円周複数個のスクレーパを
固設するとともに,該分散板およびスクレーパの直上の
分級装置のケーシングに粉砕原料の供給管を配設し,前
記ガイドコーンの逆截頭円錐面に上昇気流を通すスリッ
トを円周複数個設けた分級装置。[Claim 1] A drive shaft consisting of a hollow tube arranged at the top of a vertical crusher or a centrifugal fluid crusher and rotatably supported in the center of a classification chamber, and a circle that rotates integrally around the drive shaft. It has a plurality of classification blades around the circumference, a fine powder discharge pipe is provided above the hollow tube, and a guide rotatable around a vertical axis is provided on the outer periphery of the classification blade for giving swirl to the air for classification. A classification device comprising a plurality of vanes disposed concentrically around the hollow tube, and a guide cone in the shape of a substantially inverted truncated cone connected to the guide vane at the lower part of the guide vane. ,
A horizontal disc-shaped dispersion plate covering the classification blades and guide vanes is fixed to the hollow tube, and a plurality of circumferential scrapers extending vertically and radially on the dispersion plate are fixed. At the same time, a supply pipe for the pulverized raw material is arranged in the casing of the classification device directly above the dispersion plate and the scraper, and a plurality of slits are provided on the circumference of the inverted truncated conical surface of the guide cone for passing upward airflow. Device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8568391A JP2894521B2 (en) | 1991-01-25 | 1991-01-25 | Classifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8568391A JP2894521B2 (en) | 1991-01-25 | 1991-01-25 | Classifier |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04243583A true JPH04243583A (en) | 1992-08-31 |
JP2894521B2 JP2894521B2 (en) | 1999-05-24 |
Family
ID=13865648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8568391A Expired - Lifetime JP2894521B2 (en) | 1991-01-25 | 1991-01-25 | Classifier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2894521B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110508488A (en) * | 2019-08-26 | 2019-11-29 | 航天环境工程有限公司 | A kind of pneumatic vortex sorting machine and application |
-
1991
- 1991-01-25 JP JP8568391A patent/JP2894521B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110508488A (en) * | 2019-08-26 | 2019-11-29 | 航天环境工程有限公司 | A kind of pneumatic vortex sorting machine and application |
Also Published As
Publication number | Publication date |
---|---|
JP2894521B2 (en) | 1999-05-24 |
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