JPS58177158A - Spiral classifier - Google Patents

Abstract

PURPOSE:To contrive to enhance the recovery efficiency of fine sand, by providing a precipitation tank having a fine sand sending-out apparatus to the rear part of the classification tank of a spiral classifier. CONSTITUTION:A spiral 3 fixed to the spiral shaft of a spiral classifier 1 is mounted in a classification tank 4. To the rear part of the classification tank 4, a precipitation tank 5 having a size sufficient for a stay time required in precipitation of water containing fine sand with a middle and small particle size is provided. A fine sand sending-out apparatus 6 mounted in the precipitation tank 5 is constituted from a rotary sprocket 8 and a conveyor 10 with fine sand scraping protrusions 9 and returns fine sand with a middle and small particle size into the classification tank 4. As a mentioned above, the stirring action of a stock material is continuously carried out in the classification tank 4 by the spiral 3 and the recovery of fine sand is efficiently carried out without lowering scraping-up capacity.

Description

【発明の詳細な説明】 この発明は砂の水洗及び分級に関し、微砂が流出せずに
確実に回収できるようにしたスパイラル分級機に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to sand washing and classification, and relates to a spiral classifier that can reliably collect fine sand without flowing out.

従来よ〕使用されているスパイラル分級機は、スパイラ
ル軸の回転による攪拌作用とプール面積が少ないために
掻き揚げ能力の大きな割には微砂の流出が多く、それら
の微砂を回収することができなかった・。これを防止す
るための攪拌作用を小さくする事は掻き揚り能力を低下
させるので＠度があるし、又プール面°積を大きくする
には、スパイラル軸を長くシ、タンク幅を広くし危けれ
ばならないが製作範囲は限定されており、高価ロータリ
一式分級機を使用したシ、必要以上の太き表機械を設置
すゐ必要があり、製作費が高価になり、多くの消耗部品
を必要とした。Conventionally used spiral classifiers have a large amount of fine sand due to the agitation effect caused by the rotation of the spiral shaft and a small pool area, so despite their large scraping capacity, a large amount of fine sand flows out, and it is difficult to recover the fine sand. could not·. Reducing the stirring action to prevent this is dangerous because it reduces the raking ability, and in order to increase the pool area, it is dangerous to make the spiral shaft longer and the tank width wider. However, the range of production is limited, and it is necessary to use an expensive rotary classifier and install a thicker table machine than necessary, resulting in high production costs and the need for many consumable parts. And so.

この発明は、スパイラル分級機の分級槽Ｏ彼部に微砂送
出装置を内蔵した沈澱槽を設けることによって上記の欠
点を解決したもので、以下図面に基づいて詳細に説明す
る。This invention solves the above-mentioned drawbacks by providing a sedimentation tank with a built-in fine sand delivery device at the bottom of the classification tank of a spiral classifier, and will be described in detail below with reference to the drawings.

スパイラル分級機１のスパイラル軸２に固定されたスパ
イラル３が分級槽４に内蔵されている。骸分級檜４の後
部に中小径の微砂を含んだ水の沈澱に要する滞留時間に
充分な大きさの沈澱槽５が設けられている。A spiral 3 fixed to a spiral shaft 2 of a spiral classifier 1 is housed in a classification tank 4. A sedimentation tank 5 having a size sufficient for the residence time required for sedimentation of water containing fine sand of medium and small diameters is provided at the rear of the carcass classification cypress 4.

該沈澱槽５には微砂送出装置６が内蔵されている。又７
は水流出口である。骸微砂送出装置６は回転歯車８及び
微砂掻き突起９付コンベアー１０よシ構成されている。The sedimentation tank 5 has a built-in fine sand delivery device 6. Again 7
is the water outlet. The fine sand sending device 6 includes a rotating gear 8 and a conveyor 10 with a sand scraping protrusion 9.

咳微砂送出装置６は沈澱槽５で沈澱した中小径の微砂を
分級槽４内へ押し戻す役割をしている。The cough fine sand sending device 6 has the role of pushing back the fine sand of medium and small diameters precipitated in the settling tank 5 into the classification tank 4.

又第３図に示す如く沈澱槽５をスパイラル分級機ｌの左
右後部に形成することも可能であるばかシか、第４図に
示す如く微砂掻き突起９付コンベアーｌＯの代わりに微
砂送シ出用スクリューコンベアー１１に形成することも
可能である。It is also possible to form the sedimentation tank 5 at the left and right rear parts of the spiral classifier l as shown in Fig. 3, or it is possible to form the sedimentation tank 5 at the left and right rear parts of the spiral classifier l, or it is possible to form the sedimentation tank 5 on the left and right rear sides of the spiral classifier l, as shown in Fig. 4. It is also possible to form it in the screw conveyor 11 for discharge.

又ＡＨ微砂混入の原料と水を投入するための原料投入口
で、Ｂは大中粒子の砂と微砂を回収するための回収口で
ある。Further, AH is a raw material input port for inputting raw materials mixed with fine sand and water, and B is a collection port for recovering large and medium particle sand and fine sand.

次にこの発明の詳細な説明すると、 微砂混入の原料と水を原料投入口Ａより投入すると、原
料は分級槽４内でスパイラル軸２に取シ付けられ九スパ
イラル３０回転により泥や中小径の微砂が水中で攪拌さ
れた後浮上し分級槽４よシ沈澱槽５内に水と共に流入す
る。沈澱槽５内に流入した微砂は時間と共に沈澱槽５の
底部に沈澱する。この沈澱した微砂は微砂送出装置６の
微砂掻き突起９によシ押し戻されて再び分級槽４へ導か
れる。分級槽４へ押し戻された中小径の微砂はスパイラ
ル３０回転により上方へ掻き揚げられ、大中粒子の砂と
共に洗滌された砂として回収口Ｂより回収される。他方
、沈澱槽５内で沈澱しない水及び泥分はそのオーバーフ
ロー分が泥分と一緒に水流出ロアよシ外部へ流出される
。Next, to explain the present invention in detail, when raw materials mixed with fine sand and water are inputted from the raw material input port A, the raw materials are attached to the spiral shaft 2 in the classification tank 4, and the nine spirals rotate 30 times to remove mud and small- to medium-sized particles. After being stirred in the water, the fine sand floats to the surface and flows from the classification tank 4 into the settling tank 5 together with water. The fine sand that has flowed into the settling tank 5 settles to the bottom of the settling tank 5 over time. This precipitated fine sand is pushed back by the fine sand scraping protrusion 9 of the fine sand sending device 6 and guided to the classification tank 4 again. The small and medium diameter fine sand pushed back into the classification tank 4 is scraped upward by 30 revolutions of the spiral, and is recovered from the recovery port B as washed sand together with the large and medium particle sand. On the other hand, the overflow of water and mud that does not settle in the settling tank 5 is discharged together with the mud to the outside through the water outflow lower.

この発明は上記のように構成したので、分級槽４内でス
パイラル３によシ原料の攪拌作用を連続して行なうこと
ができるばかりでなく、掻ａｍげ能力を低下させずに微
砂を確実に回収できるので、極めて能率的で経済的でめ
る。Since this invention is constructed as described above, it is not only possible to continuously stir the raw material by the spiral 3 in the classification tank 4, but also to ensure that fine sand is removed without reducing the scraping ability. It is extremely efficient and economical.

又既存のスパイラル分級機に取り付けることができ製作
費を安価にできる。Furthermore, it can be attached to an existing spiral classifier, reducing manufacturing costs.

ｊ！に、微砂の回収手段がその自重を利用して行なうた
めに、微砂の重量の相違により、その沈澱部所が異なる
ためにこの原理を利用して沈澱槽の幅と長さを決定して
容易に砂と泥分を分級できる。j! In addition, since the means for collecting fine sand uses its own weight, the settling area differs depending on the weight of the fine sand, so this principle is used to determine the width and length of the settling tank. sand and mud can be easily separated.

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

第１図社この発明のスパイラル分級機の側断面図、第２
図は第１図の平面図、諮３図は別の実施例の平面図、第
４図は沈澱槽の別の実施例の側断面図で、図中の符号１
・・・スノ（イラル分級機、　　２・・・スパイラル軸
、 ３・・・スパイラル、　　　４・・・分級槽、５・・、
沈澱槽　　　　６・・・微砂送出装置、７１９．水流出
口、　　　　８・・・回転歯車、９・・・微砂掻き突起
、１０・・・コンベアー、１１・・・微砂送シ出用スク
リューコンベアー、Ａ・・・原料投入口、　　Ｂ・・・
回収口である。Figure 1: Side sectional view of the spiral classifier of this invention, No. 2
The figure is a plan view of Fig. 1, Fig. 3 is a plan view of another embodiment, and Fig. 4 is a side sectional view of another embodiment of the settling tank.
... Suno (Iral classifier, 2... Spiral shaft, 3... Spiral, 4... Classification tank, 5...
Sedimentation tank 6... Fine sand delivery device, 719. Water outlet, 8... Rotating gear, 9... Fine sand scraping protrusion, 10... Conveyor, 11... Screw conveyor for feeding fine sand, A... Raw material input port, B...
This is the collection port.

Claims (1)

【特許請求の範囲】 １、　スパイラル分級機の分級槽の後部に微砂退出装置
を内蔵した沈澱槽を設は九ことを特徴とするスパイラル
分級機。 λ　沈澱槽をスパイラル分級機の分級槽の後側１！ＩＫ
設けた特鈴晴求の軸囲縞１項記載０スパイラル分級機。 ３　微砂送出装置が回転歯車と鼓回転歯車に取シ付けら
れ九微砂掻き突起付コンベアーで構成された特許請求の
範囲第１項又は第２項記載のスパイラル分級機。 弘　微砂送出装置が微砂送り出用スクリ二−コンベアー
で構成された特許請求の範囲第１項又は第２項記載のス
パイラル分級機。[Claims] 1. A spiral classifier, characterized in that a settling tank with a built-in fine sand removal device is provided at the rear of the classification tank of the spiral classifier. λ Sedimentation tank on the rear side of the classification tank of the spiral classifier 1! IK
A spiral classifier with shaft circumference stripes described in Section 1 of Haruyoshi Tokusuzu was installed. 3. The spiral classifier according to claim 1 or 2, wherein the fine sand sending device is constructed of a conveyor with nine fine sand scraping protrusions attached to a rotating gear and a drum rotating gear. Hiroshi The spiral classifier according to claim 1 or 2, wherein the fine sand sending device is constituted by a screen conveyor for sending out fine sand.