JPH05285455A - Ground sand dust removing apparatus - Google Patents

Ground sand dust removing apparatus

Info

Publication number
JPH05285455A
JPH05285455A JP12922992A JP12922992A JPH05285455A JP H05285455 A JPH05285455 A JP H05285455A JP 12922992 A JP12922992 A JP 12922992A JP 12922992 A JP12922992 A JP 12922992A JP H05285455 A JPH05285455 A JP H05285455A
Authority
JP
Japan
Prior art keywords
casing
dust
pipe
plate
crushed sand
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.)
Pending
Application number
JP12922992A
Other languages
Japanese (ja)
Inventor
Haruaki Furuya
治昭 古谷
Akira Mizogami
明 溝上
Yasuhiro Oku
康浩 奥
Original Assignee
Ube Ind Ltd
宇部興産株式会社
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 Ube Ind Ltd, 宇部興産株式会社 filed Critical Ube Ind Ltd
Priority to JP12922992A priority Critical patent/JPH05285455A/en
Publication of JPH05285455A publication Critical patent/JPH05285455A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To provide a ground sand dust removing apparatus capable of easily and arbitrarily removing the dust (fine powder) in ground sand, low in both of initial cost and running cost and easy to operate. CONSTITUTION:A dispersing plate 250 is arranged to the cylindrical center shaft of a casing 210 consisting of a cylindrical pipe 210a and a conical part 210b and a charging pipe 270 supplying ground sand is provided above the dispersing plate 250 and rotary blades 280 each composed of a vertical flat plate are fixed to the dispersing plate 250 through a support 260 at the upper part of the cylindrical pipe 210a. A plurality of valve plates 290 each composed of a freely advancing and retreating horizontal flat plate are arranged directly under the rotary blades 280 and a revolving air stream discharge pipe 292 and a dust collecting cyclone 300 are connected to the casing 210 and an air inflow pipe 282 is provided to the lower part of the casing 210.

Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【産業上の利用分野】本発明は,砕砂プラントに使用さ
れる破砕機で生産された砕砂中の微粉(ダスト)を取除
くために使用される砕砂ダスト除去装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crushed sand dust removing device used to remove fine particles (dust) in crushed sand produced by a crusher used in a crushing sand plant.
【0002】[0002]
【従来の技術】近年,天然砂(川砂,山砂,陸砂利,海
砂)の枯渇によって,砕石業における砕砂の生産量は年
々増加の傾向を示しており,今後ともその需要は旺盛で
ある。そして砕石の生産方法では従来から採掘岩石の小
割りを行なう破砕機を使用する砕砂プラントがあり,破
砕機による破砕作業では必然的に所望のサイズよりも小
さい微粉の生成を余儀なくさせられる。図5は従来の砕
砂プラントのフローシートを示し,原料ビン10の原料
は振動フィーダ20で切出されてコーンクラッシャ30
で破砕され,振動篩40で篩分けされ所望の粒度以上の
オーバサイズは再びコーンクラッシャ30へリサイクル
される。アンダサイズの砕砂はエアセパレータ50へ送
られ,分級により砕砂とそれ以下の微粉(ダスト)に選
別される。図中のQf,Qc,Qr,Qp,Qd,Qs
は各々時間当りの生成量を示す。
2. Description of the Related Art In recent years, due to depletion of natural sand (river sand, mountain sand, land gravel, sea sand), the amount of crushed sand in the crushed stone industry has been increasing year by year, and the demand is strong in the future. .. In the crushed stone production method, there has been a crushing sand plant that uses a crusher for cutting the mined rock into small pieces, and in the crushing work using the crusher, it is inevitably necessary to generate fine powder smaller than a desired size. FIG. 5 shows a flow sheet of a conventional sand crushing plant, in which the raw material in the raw material bottle 10 is cut out by a vibrating feeder 20 and is then crushed by a cone crusher 30.
Is crushed by, and is sieved by a vibrating sieve 40, and the oversize having a desired particle size or more is recycled to the cone crusher 30 again. The undersized crushed sand is sent to the air separator 50, and is classified into crushed sand and fine particles (dust) smaller than the crushed sand by classification. Qf, Qc, Qr, Qp, Qd, Qs in the figure
Indicates the amount produced per hour.
【0003】一方,図6は図5のフローシートの各工程
における粒度分布曲線図を示し,原料粒度は破砕され
てとなり,篩分け後のアンダサイズはとなる。この
砕砂中には約5〜10%のダストを含んでおり,分級の
結果最終製品としてのものが得られる(はダストの
粒度分布)が,JIS砕砂規格である2つの点線の範囲
内に入っているので規格を満足する砕砂となる。またJ
IS規格では骨材中に含有する74μm以下のダストが
全量の7%以下とする規定があり,ダストの混入は品質
に悪い影響を与えるので極力排除しなければならない。
On the other hand, FIG. 6 shows a particle size distribution curve diagram in each step of the flow sheet of FIG. 5, in which the material particle size is crushed and the undersize after sieving is. This crushed sand contains about 5-10% of dust, and as a result of classification, the final product is obtained (is the particle size distribution of dust), but it falls within the range of the two dotted lines which is the JIS crushed sand standard. Therefore, the crushed sand satisfies the standard. See J
The IS standard stipulates that the amount of dust contained in aggregate of 74 μm or less should be 7% or less of the total amount, and dust contamination adversely affects the quality, so it must be eliminated as much as possible.
【0004】砕砂プラントにおける砕砂に含有中のダス
トは大凡400μm以下のもので,これを砕砂より除去
するためのエアセパレータ50は,スターテバント型エ
アセパレータ100が使用される。図7はスターテバン
ト型エアセパレータ100の縦断面図を示し,外側ケー
シングiと内側ケーシングfとからなる缶体の中心軸上
に可変速電動機Mによって回転駆動される鉛直の回転軸
nに分散板c,主ブレードeおよび補助ブレードdが固
設され回転する。原料供給口aよりシュートbを経由し
て分散板cに投入された原料は,分散板cによって遠心
力を付与されて内側ケーシングfに向かって円周均等に
放射状に水平に放出され,主ブレードeの回転によって
生じた循環旋回気流は,内側ケーシングfにて上昇旋回
気流となり,分散された原料粉粒体のうち微粉を上方に
運び補助ブレードdを通過する。この際粉粒体は補助ブ
レードdによって遠心力と慣性力を与えられ,粗粒と微
粉とに分離され,微粉のみ主ブレードeに吸い込まれ,
慣性力の大きい粗粒は内側ケーシングf内面に衝突し壁
面に沿って沈降し粗粒排出口Iより排出される。一方,
主ブレードeに吸い込まれた微粉は,内側ケーシングf
と外側ケーシングiとの環状空間mに運び込まれて,環
状降下旋回気流により遠心力を与えられ,外側ケーシン
グi内壁面に沿って螺旋状に下方に運ばれ,重力によっ
て下方の微粉出口Kより排出される。図中の環状空間m
を通過した環状旋回気流は内側ケーシングfの中間部に
設けられたガイドベーンjより内側へ吸い込まれて前記
の旋回上昇気流となって循環しながら分離作用を繰返し
行なう。粉粒体の比重や微粒子の形状ならびに分級点
(Cut Point)によって回転軸nの回転数が設
定され,また設計上の補助ブレードdの枚数も分級点の
設定に関与するが,分級点の微妙な調整は主ブレードe
と補助ブレードdの間に設けた水平方向伸縮自在なバル
ブプレートgの調整によってコントロールする。Pおよ
びQは熱交換用の空気入口および出口である。
The dust contained in the crushed sand in the crushed sand plant is about 400 μm or less, and a startate type air separator 100 is used as the air separator 50 for removing the dust from the crushed sand. FIG. 7 is a vertical cross-sectional view of the startate type air separator 100, in which a dispersion plate c is provided on a vertical rotation axis n which is rotationally driven by a variable speed electric motor M on the central axis of a can body composed of an outer casing i and an inner casing f. , The main blade e and the auxiliary blade d are fixed and rotate. The raw material introduced into the dispersion plate c from the raw material supply port a through the chute b is given a centrifugal force by the dispersion plate c, and is discharged radially toward the inner casing f in a radial direction evenly around the circumference. The circulating swirling airflow generated by the rotation of e becomes an ascending swirling airflow in the inner casing f and carries fine powder among the dispersed raw material powder particles upward and passes through the auxiliary blade d. At this time, the granular material is subjected to centrifugal force and inertial force by the auxiliary blade d, separated into coarse particles and fine particles, and only the fine particles are sucked into the main blade e,
The coarse particles having a large inertial force collide with the inner surface of the inner casing f, settle along the wall surface, and are discharged from the coarse particle discharge port I. on the other hand,
The fine powder sucked into the main blade e is the inner casing f
It is carried into the annular space m between the outer casing i and the outer casing i, is given a centrifugal force by the annular downward swirling airflow, is spirally conveyed downward along the inner wall surface of the outer casing i, and is discharged from the lower fine powder outlet K by gravity. To be done. Annular space m in the figure
The annular swirling airflow that has passed through is sucked inward from the guide vanes j provided in the middle portion of the inner casing f and becomes the swirl rising airflow, and repeats the separating action while circulating. The rotation speed of the rotary shaft n is set by the specific gravity of the powder or granules, the shape of the particles and the classification point (Cut Point), and the number of auxiliary blades d in the design also contributes to the setting of the classification point. The main blade e
It is controlled by adjusting a horizontally expandable valve plate g provided between the auxiliary blade d and the auxiliary blade d. P and Q are air inlets and outlets for heat exchange.
【0005】このように,主ブレードeは風量調節に使
用し,主ブレードeの羽根枚数を増すと風量は増加す
る。また,回転軸nの回転数を増加することによっても
風量は増加するが,分級点も同時に変更される。補助ブ
レードdは粉末度(分級点)の調整に使用し,羽根枚数
を増すと細かくなる。バルブプレートgは,ハンドルh
を操作することにより同様に粉末度の調整に使用し,微
調整に効果があり開度を小さくする(内側へ多く突出す
る)と分級点は細かくなる。図8はスターテバント型エ
アセパレータ100内の粉末およびエアの流れを示す説
明図,図9はスターテバント型エアセパレータ100の
斜視図である。
Thus, the main blade e is used for adjusting the air volume, and the air volume increases as the number of blades of the main blade e increases. Further, although the air volume also increases by increasing the number of rotations of the rotating shaft n, the classification point is also changed at the same time. The auxiliary blade d is used for adjusting the fineness (classification point), and becomes finer when the number of blades is increased. The valve plate g has a handle h
It is also used to adjust the fineness by operating, and it is effective for fine adjustment, and if the opening is made small (protruding inward much), the classification point becomes fine. FIG. 8 is an explanatory view showing the flow of powder and air in the startate type air separator 100, and FIG. 9 is a perspective view of the startate type air separator 100.
【0006】[0006]
【発明が解決しようとする課題】砕石業における砕砂の
ダスト除去は比較的歴史が浅く,砕砂中の微粉(ダス
ト)を乾式で取除くための決定的な分級機が現在のとこ
ろ存在しない。したがって,前記したようにスターテバ
ント型エアセパレータ等既存の高級な分級機を使用して
いるが,目的に比較してイニシアルコストが高く,動力
原単位も大きく,かつ,分級操作が比較的難しい等の難
点があり,分級精度がそれほど高くなくて,動力原単位
が低く,かつ,イニシアルコストの廉価なダスト処理用
に適した砕砂ダスト除去装置の出現が望まれていた。ま
た,砕砂に含有するダストを水で洗浄する湿式の方法で
は,洗浄と乾燥と排水処理という工程があらたに加わっ
た砕砂プラントとなり,イニシアルコストおよびランニ
ングコストが上昇し生産コストが上昇するという欠点が
あった。
Dust removal of crushed sand in the crushing stone industry has a relatively short history, and there is currently no definitive classifier for dryly removing fine particles (dust) in crushed sand. Therefore, as described above, existing high-class classifiers such as the startate type air separator are used, but the initial cost is higher than the purpose, the power consumption is large, and the classification operation is relatively difficult. There was a need for the advent of a crushed sand dust removal device suitable for dust disposal, which has drawbacks, low classification accuracy, low power consumption, and low initial cost. In addition, the wet method of cleaning the dust contained in the crushed sand with water results in a crushed sand plant that additionally includes the steps of cleaning, drying, and wastewater treatment, which has the drawback of increasing the initial cost and running cost and increasing the production cost. there were.
【0007】[0007]
【課題を解決するための手段】上に述べた課題を解決す
るために,本発明の砕砂ダスト除去装置においては,砕
砂の粉粒体を供給する投入管と竪軸回りに回転自在な水
平円板からなる分散板と旋回上昇気流を発生させる回転
翼と該回転翼の直下に配設され水平方向進退動自在な水
平平板からなるバルブプレートとを備えた単胴で,か
つ,筒状のケーシングを有し,該ケーシングの旋回上昇
気流が切線方向に排出される排出管を該ケーシングに備
えるとともに,該排出管にダスト捕集用のサイクロンを
接続し,かつ,該ケーシング下部に空気の取入口を設け
た構成とした。
In order to solve the above-mentioned problems, in the crushed sand dust removing device of the present invention, a horizontal pipe which is rotatable around a vertical axis and a charging pipe for supplying powdered particles of crushed sand. A single-body and tubular casing having a dispersion plate made of a plate, a rotor blade for generating a swirling upward airflow, and a valve plate made of a horizontal flat plate disposed directly below the rotor blade and capable of moving back and forth in the horizontal direction. The casing is provided with a discharge pipe through which the swirl upward airflow of the casing is discharged in a cutting line direction, a cyclone for collecting dust is connected to the discharge pipe, and an air intake port is provided at a lower portion of the casing. Is provided.
【0008】[0008]
【作用】本発明は以上のように構成されているので,原
料投入管より分散板上に供給された粉粒体は,回転する
分散板によって遠心力を付与されてほぼ円周均等に水平
方向に放射され,空気取入口より導入され回転翼の回転
によってケーシング内を流れる旋回上昇気流により,気
流によって受ける上向きの抗力と,重力との差異による
分級作用を受け,粗粒は抗力に打ち克って自重により落
下しケーシングの内壁面に沿って粗粒排出口より排出さ
れる。また,原料中の微粉はこの上昇気流に乗り旋回気
流とともにケーシング出口よりサイクロンへ向かうが,
この際回転翼の下方にあるバルブプレートの突出長さに
よる第2次の分級作用を受け微粉中の粗粒は排除され,
粗粒排出口に向かう。このようにしてケーシングを出た
含塵ガス中のダストはサイクロンで捕集される。
Since the present invention is configured as described above, the powder and granules supplied from the raw material feeding pipe onto the dispersion plate are subjected to centrifugal force by the rotating dispersion plate so that they are substantially evenly circumferentially aligned in the horizontal direction. The swirling ascending airflow that is radiated to the air and introduced from the air inlet and flows in the casing due to the rotation of the rotor blades is subjected to classification due to the difference between the upward drag force exerted by the air flow and gravity, and the coarse particles overcome the drag force. It falls by its own weight and is discharged from the coarse-grain discharge port along the inner wall surface of the casing. In addition, the fine powder in the raw material rides on this rising air flow and goes to the cyclone from the casing outlet along with the swirling air flow.
At this time, the coarse particles in the fine powder are eliminated due to the secondary classification effect due to the protruding length of the valve plate below the rotor blades.
Head to the coarse grain outlet. The dust contained in the dust-containing gas thus exiting the casing is collected by the cyclone.
【0009】[0009]
【実施例】以下図面に基づいて本発明の実施例について
詳細に説明する。図1〜図4は本発明の実施例を示し,
図1は砕砂ダスト除去装置の全体縦断面図,図2は砕砂
ダスト除去装置の平面図,図3は砕砂ダスト除去装置の
要部縦断面図,図4は図3のX−X視の仰瞰図である。
図において,砕砂ダスト除去装置200は,円筒管21
0aおよびこれに接続される円錐管210bとからなる
ケーシング210の上部中心軸上に可変速電動機220
および減速機230を介して回転する回転軸240の下
端に水平円板からなる分散板250を取付け,この分散
板250上へ原料を投入する投入口270aを有する原
料供給管270は回転軸240の周囲に設け,さらにケ
ーシング210の円筒管210aの上部をさらに一回り
大きな円筒管とし,その内周近くに垂直板からなる回転
翼280を円周均等に複数個サポート260を介して分
散板250に固結して配設する。また,回転翼280の
直下のケーシング210(円筒管210a)から内部に
進退動自在な水平平板からなる突出板290aを備えた
バルブプレート290が円周複数個配設される。バルブ
プレート290の進退動手段は手動のほかエアシリンダ
や油圧シリンダまたは電動機等の動力手段が使用でき
る。
Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 4 show an embodiment of the present invention,
1 is an overall vertical cross-sectional view of the crushed sand dust removing device, FIG. 2 is a plan view of the crushed sand dust removing device, FIG. 3 is a vertical cross-sectional view of a main part of the crushed sand dust removing device, and FIG. It is a perspective view.
In the figure, the crushed sand dust removing device 200 is shown as a cylindrical pipe 21.
0a and a conical tube 210b connected to the variable speed electric motor 220 on the upper central axis of the casing 210.
Also, a dispersion plate 250 formed of a horizontal disk is attached to the lower end of a rotary shaft 240 that rotates via a speed reducer 230, and a raw material supply pipe 270 having a charging port 270a for charging a raw material onto the dispersion plate 250 is provided with a raw material supply pipe 270. A cylindrical pipe 210a of the casing 210 is provided on the periphery, and the upper part of the cylindrical pipe 210a is made larger to a size larger than that of the rotary pipe. It is solidified and placed. Further, a plurality of valve plates 290 each having a protruding plate 290a formed of a horizontal flat plate that can be moved back and forth are disposed inside the casing 210 (cylindrical tube 210a) immediately below the rotary blade 280. As the means for moving the valve plate 290 back and forth, in addition to manual operation, power means such as an air cylinder, a hydraulic cylinder or an electric motor can be used.
【0010】回転翼280に対向するケーシング210
(円筒管210a)の円周1個所に開口を設け,図2に
示すように,回転翼280の回転によって流れる旋回気
流が円筒管210aを接線方向に排出され,下流に設置
したサイクロン300へ導かれる連絡管292が設けら
れる。サイクロン300は通常使用される切線流入型サ
イクロンあるいは渦巻サイクロンが使用される。サイク
ロン300の排気口300aと円錐管210bの下部に
設けられた空気流入管282との間には循環管310が
連結される。空気流入管282はケーシング210の中
心に向かってケーシング210に直交して設けられる
が,図3および図4に示すように,ケーシング210内
に発生する旋回気流の方向(回転翼280の回転方向と
同じ)に向かって,接線状に取付ける方が望ましい。図
の実施例ではケーシング210に取付けられる角ダクト
280aに角丸管282を接続して循環管310を円管
とした。なお,本実施例ではサイクロン300の排気口
300aと空気流入管282との間に循環管310を設
けて,空気を循環させる方式としたが,サイクロン30
0の集塵後の清浄空気をそのまま大気放出とし,ケーシ
ング210へは大気を流入する方式としてもかまわな
い。
The casing 210 facing the rotor 280
An opening is provided at one circumference of the (cylindrical tube 210a), and as shown in FIG. 2, the swirling airflow flowing by the rotation of the rotor 280 is tangentially discharged from the cylindrical tube 210a and guided to the cyclone 300 installed downstream. A connecting pipe 292 is provided. As the cyclone 300, a cut-line inflow type cyclone or a spiral cyclone that is normally used is used. A circulation pipe 310 is connected between the exhaust port 300a of the cyclone 300 and the air inflow pipe 282 provided in the lower portion of the conical pipe 210b. The air inflow pipe 282 is provided orthogonally to the casing 210 toward the center of the casing 210. However, as shown in FIGS. It is preferable to attach tangentially to (the same). In the illustrated embodiment, the round pipe 282 is connected to the square duct 280a attached to the casing 210, and the circulation pipe 310 is a circular pipe. In this embodiment, the circulation pipe 310 is provided between the exhaust port 300a of the cyclone 300 and the air inflow pipe 282 to circulate the air.
A method may be adopted in which clean air after dust collection of 0 is directly discharged to the atmosphere and the atmosphere is introduced into the casing 210.
【0011】以上のように構成された本発明の砕砂ダス
ト除去装置の作動について説明する。可変速電動機22
0の駆動により減速機230を介して回転軸240,分
散板250,回転翼280は一体的に回転する。原料投
入管270の投入口270aから供給された原料の粉粒
体(砕砂)は分散板250により遠心力を受けスパイラ
ル状に略水平に分散板250から周囲の空間へ放射され
る。一方,ケーシング210内では空気流入管282か
ら導入された空気が回転翼280の回転により旋回上昇
気流を形成しており,この気流によって分散板250の
周囲に放出された粉粒体は分級作用を受け,粗粒はこの
気流に打ち克って重力作用で落下し粗粒排出口210c
に向かうのに対し,ダスト(微粉)は,この気流に乗っ
て含塵気流となって旋回気流となる。そして,回転翼2
80へ向かう直前に回転翼280下方にあるバルブプレ
ート290の突出板290aによって第2次の分級作用
を受ける。第2次の分級作用は,ダスト中の粗粉が上昇
旋回気流のうち比較的外周寄りに分布しており,突出板
290aの下面に阻止されて落下し,ダスト中の微粉の
み旋回気流とともに連絡管292より排出される。連絡
管292よりサイクロン300へ流入した含塵ガスのダ
ストを捕集されてダスト排出口300bより排出され,
清浄空気は循環管310を経由して再びケーシング21
0内に循環される。本装置の分級点の操作は回転軸の回
転数とバルブプレートの開度(突出板の突出長さ)によ
って行なう。
The operation of the crushed sand dust removing device of the present invention constructed as above will be described. Variable speed electric motor 22
By driving 0, the rotary shaft 240, the dispersion plate 250, and the rotary blade 280 rotate integrally via the speed reducer 230. The powder particles (crushed sand) of the raw material supplied from the input port 270a of the raw material input pipe 270 are subjected to centrifugal force by the dispersion plate 250 and are radiated from the dispersion plate 250 to the surrounding space substantially horizontally in a spiral shape. On the other hand, in the casing 210, the air introduced from the air inflow pipe 282 forms a swirling upward airflow due to the rotation of the rotary blades 280, and the powdery particles discharged around the dispersion plate 250 by this airflow perform a classification action. Upon receipt of the coarse particles, the coarse particles overcome this air flow and fall due to the action of gravity, and the coarse particle discharge port 210c.
On the other hand, the dust (fine powder) rides on this air flow and becomes a dust-containing air flow and becomes a swirling air flow. And the rotor 2
Immediately before going to 80, the secondary classifying action is performed by the protruding plate 290a of the valve plate 290 located below the rotary blade 280. The second classifying action is that the coarse particles in the dust are distributed relatively to the outer periphery of the upward swirling airflow, and are blocked by the lower surface of the projecting plate 290a and fall, and only the fine particles in the dust communicate with the swirling airflow. It is discharged from the pipe 292. The dust of the dust-containing gas flowing into the cyclone 300 from the connecting pipe 292 is collected and discharged from the dust discharge port 300b,
The clean air is passed through the circulation pipe 310 and again to the casing 21.
It is circulated within 0. The classification point of this device is operated by the number of rotations of the rotating shaft and the opening of the valve plate (the protruding length of the protruding plate).
【0012】以上述べたように,本発明の砕砂ダスト除
去装置は,使用される動力手段は単一の可変速電動機2
20のみであり,従来例で説明したスターテバント型エ
アセパレータのように,ケーシングを二重管とすること
もなく構造がシンプルで,組立,点検,分解が容易であ
り,かつ,目的とする砕砂含有中のダストを容易に除去
することができる。また,除去するダストの分級点の変
更も容易であり運転操作上の熟練も要することがないか
ら取扱いが容易である。また,エア流れをケーシング内
の一方流れとし,内部循環がないから装置内の圧力損失
が小さくこの分動力費が低減される。
As described above, in the crushed sand removing apparatus of the present invention, the power means used is a single variable speed electric motor 2.
It has only 20 and has a simple structure without using a casing as a double tube like the startate type air separator described in the conventional example, and is easy to assemble, inspect, and disassemble, and contains the target crushed sand. The dust inside can be easily removed. In addition, the classification point of the dust to be removed can be easily changed, and it does not require any skill in driving operation, so handling is easy. In addition, since the air flow is one flow in the casing and there is no internal circulation, the pressure loss in the device is small and the power cost is reduced accordingly.
【0013】[0013]
【発明の効果】本発明の砕砂ダスト除去装置は,構造が
簡単でイニシアルコストが安価であるとともに,動力費
も低く,生産された砕砂に含有するダストを所要の粒度
まで容易に除去することができる。したがって高品質の
砕砂を安価に製造することができる。また,装置の組
立,点検,分解も容易であるからメインテナンス性が優
れる。
The crushed sand dust removing apparatus of the present invention has a simple structure and a low initial cost, has a low power cost, and can easily remove the dust contained in the crushed sand produced to a required particle size. it can. Therefore, high quality crushed sand can be manufactured at low cost. In addition, it is easy to assemble, inspect, and disassemble the equipment, so it has excellent maintainability.
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明の実施例に係る砕砂ダスト除去装置の全
体縦断面図である。
FIG. 1 is an overall vertical cross-sectional view of a crushed sand dust removing device according to an embodiment of the present invention.
【図2】本発明の実施例に係る砕砂ダスト除去装置の平
面図である。
FIG. 2 is a plan view of a crushed sand dust removing device according to an embodiment of the present invention.
【図3】本発明の実施例に係る砕砂ダスト除去装置の要
部縦断面図である。
FIG. 3 is a longitudinal sectional view of a main part of a crushed sand dust removing device according to an embodiment of the present invention.
【図4】図3のX−X視の仰瞰図である。FIG. 4 is a perspective view taken along line XX of FIG.
【図5】従来の砕砂プラントのフローシートである。FIG. 5 is a flow sheet of a conventional sand breaking plant.
【図6】砕砂プラントの各工程における粒度分布曲線図
である。
FIG. 6 is a particle size distribution curve diagram in each step of the crushed sand plant.
【図7】スターテバント型エアセパレータの縦断面図で
ある。
FIG. 7 is a vertical sectional view of a startate type air separator.
【図8】スターテバント型エアセパレータ内の粉末およ
びエアの流れを示す説明図である。
FIG. 8 is an explanatory diagram showing the flow of powder and air in the startate type air separator.
【図9】スターテバント型エアセパレータの斜視図であ
る。
FIG. 9 is a perspective view of a startate type air separator.
【符号の説明】[Explanation of symbols]
10 原料ビン 20 振動フィーダ 30 コーンクラッシャ 40 振動篩 50 セパレータ 100 スターテバント型エアセパレータ 200 砕砂ダスト除去装置 210 ケーシング 210a 円筒管 210b 円錐管 210c 粗粒排出口 220 可変速電動機 230 減速機 240 回転軸 250 分散板 260 サポート 270 原料供給管 270a 投入口 280 回転翼 282 空気流入管 290 バルブプレート 290a 突出板 292 連絡管 300 サイクロン 300a 排気口 300b ダスト排出口 310 循環管 a 原料供給口 b シュート c 分散板 d 補助ブレード e 主ブレード f 内側ケーシング g バルブプレート h ハンドル i 外側ケーシング m 環状空間 n 回転軸 I 粗粒排出口 J ガイドベーン K 微粉出口 M 可変速電動機 P 冷空気入口 Q 温空気出口 10 raw material bottle 20 vibrating feeder 30 cone crusher 40 vibrating sieve 50 separator 100 startate type air separator 200 crushed sand dust removing device 210 casing 210a cylindrical pipe 210b conical pipe 210c coarse particle discharge port 220 variable speed electric motor 230 reducer 240 rotating shaft 250 dispersion plate 260 support 270 raw material supply pipe 270a input port 280 rotor blade 282 air inflow pipe 290 valve plate 290a protruding plate 292 communication pipe 300 cyclone 300a exhaust port 300b dust discharge port 310 circulation pipe a raw material supply port b chute c dispersion plate d auxiliary blade e Main blade f Inner casing g Valve plate h Handle i Outer casing m Annular space n Rotating shaft I Coarse grain discharge port J Guide vane K Fine powder outlet M Variable speed electric motor Cold air inlet Q warm air outlet

Claims (1)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 砕砂の粉粒体を供給する投入管と竪軸回
    りに回転自在な水平円板からなる分散板と旋回上昇気流
    を発生させる回転翼と該回転翼の直下に配設され水平方
    向進退動自在な水平平板からなるバルブプレートとを備
    えた単胴で,かつ,筒状のケーシングを有し,該ケーシ
    ングの旋回上昇気流が切線方向に排出される排出管を該
    ケーシングに備えるとともに,該排出管にダスト捕集用
    のサイクロンを接続し,かつ,該ケーシング下部に空気
    の取入口を設けた砕砂ダスト除去装置。
    1. A charging pipe for supplying crushed sand powder and granules, a dispersion plate composed of a horizontal disk rotatable around a vertical axis, a rotary blade for generating a swirling upward air flow, and a horizontal plate arranged directly below the rotary blade. A single cylinder provided with a valve plate composed of a horizontal flat plate that can move back and forth in a direction, and a tubular casing, and the casing is provided with a discharge pipe through which a swirl upward airflow of the casing is discharged in a cut line direction. A crushed sand dust removing device in which a cyclone for collecting dust is connected to the discharge pipe, and an air inlet is provided at a lower portion of the casing.
JP12922992A 1992-04-07 1992-04-07 Ground sand dust removing apparatus Pending JPH05285455A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12922992A JPH05285455A (en) 1992-04-07 1992-04-07 Ground sand dust removing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12922992A JPH05285455A (en) 1992-04-07 1992-04-07 Ground sand dust removing apparatus

Publications (1)

Publication Number Publication Date
JPH05285455A true JPH05285455A (en) 1993-11-02

Family

ID=15004358

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12922992A Pending JPH05285455A (en) 1992-04-07 1992-04-07 Ground sand dust removing apparatus

Country Status (1)

Country Link
JP (1) JPH05285455A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5887725A (en) * 1995-04-14 1999-03-30 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Classifier having a rotatable dispersion plate
JP2013132629A (en) * 2011-12-27 2013-07-08 Akamatsu Denki Seisakusho:Kk Dust arrester
KR101503362B1 (en) * 2013-06-17 2015-03-18 용원기계공업(주) Differential for stone dust separation unit
KR101602890B1 (en) * 2015-10-28 2016-03-14 (주) 태흥산업 Classifier that is configured filtration fan
JP2016150303A (en) * 2015-02-17 2016-08-22 Jfeスチール株式会社 Granule separation device and granule separation method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01274882A (en) * 1988-04-26 1989-11-02 Onoda Cement Co Ltd Pneumatic classifier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01274882A (en) * 1988-04-26 1989-11-02 Onoda Cement Co Ltd Pneumatic classifier

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5887725A (en) * 1995-04-14 1999-03-30 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Classifier having a rotatable dispersion plate
JP2013132629A (en) * 2011-12-27 2013-07-08 Akamatsu Denki Seisakusho:Kk Dust arrester
KR101503362B1 (en) * 2013-06-17 2015-03-18 용원기계공업(주) Differential for stone dust separation unit
JP2016150303A (en) * 2015-02-17 2016-08-22 Jfeスチール株式会社 Granule separation device and granule separation method
KR101602890B1 (en) * 2015-10-28 2016-03-14 (주) 태흥산업 Classifier that is configured filtration fan

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