JPS6344137Y2 - - Google Patents
Info
- Publication number
- JPS6344137Y2 JPS6344137Y2 JP1984041819U JP4181984U JPS6344137Y2 JP S6344137 Y2 JPS6344137 Y2 JP S6344137Y2 JP 1984041819 U JP1984041819 U JP 1984041819U JP 4181984 U JP4181984 U JP 4181984U JP S6344137 Y2 JPS6344137 Y2 JP S6344137Y2
- Authority
- JP
- Japan
- Prior art keywords
- diameter
- screen
- perforated plate
- perforated
- hole
- 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
Links
- 239000011148 porous material Substances 0.000 claims description 4
- 239000008188 pellet Substances 0.000 description 10
- 239000008187 granular material Substances 0.000 description 9
- 239000000843 powder Substances 0.000 description 9
- 238000007873 sieving Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Landscapes
- Combined Means For Separation Of Solids (AREA)
Description
【考案の詳細な説明】 本考案は、新規なふるい分け装置。[Detailed explanation of the idea] This invention is a new sieving device.
粒度の異なる粉粒体から一定粒度の粉粒体を分
別する装置としてふるい分け機械が使用される。
ふるい分け機械は、一定の開孔径を有する多孔板
よりなるスクリーンを媒体として、目的とする粒
度の粉粒体を分別するもので、具体的には、トロ
ンメル，六角ふるい等の回転ふるい、ローヘツド
スクリーン，エリプテツクススクリーン，ビンダ
ー等の振動ふるいなど数多くの種類がある。ま
た、上記ふるい分け機械のスクリーンとしては、
金網，鑽孔板のような多孔板が一般に使用されて
いる。ところが、ふるい分けされる粉粒体中に上
記スクリーンの開孔径以下の径を有する棒状体が
混在する場合、該棒状体がスクリーンを通過して
しまい、スクリーンによつて分別された粉粒体中
に混入するという現象を生じる。例えば、熱可塑
性樹脂をペレタイザーで造粒して得られるペレツ
ト中には、押出機より押出された樹脂が切断され
ないまま棒状体として混在する場合がある。この
ようなペレツトから、前記ふるい分け機械によつ
て一定粒径以下のペレツトを分別する場合、分別
されるペレツトと共に該棒状体がスクリーンを通
過して該ペレツト中に混入し、ペレツトの使用に
際して障害となるという問題を有する。 A sieving machine is used as a device to separate powder and granular materials of a constant particle size from powder and granular materials of different particle sizes.
A sieving machine uses a screen made of a perforated plate with a fixed opening diameter as a medium to separate powder and granules of the desired particle size.Specifically, it uses rotating sieves such as trommel or hexagonal sieves, and low-head screens. There are many types of vibrating screens such as , elliptical screens, and binders. In addition, as a screen for the above-mentioned sifting machine,
Perforated plates such as wire mesh and perforated plates are commonly used. However, when the powder and granules to be sifted contain rod-shaped bodies having a diameter smaller than the aperture diameter of the screen, the rod-shaped bodies pass through the screen, and the granules separated by the screen contain some rod-shaped bodies. This causes the phenomenon of contamination. For example, in pellets obtained by granulating thermoplastic resin with a pelletizer, resin extruded from an extruder may be mixed in uncut rod-shaped bodies. When such pellets are separated into pellets of a certain particle size or less by the sieving machine, the rods pass through the screen together with the pellets to be separated and are mixed into the pellets, which may cause problems when using the pellets. It has the problem of becoming.
本考案は、上記問題に鑑み成されたもので複数
の多孔板を特定な構造となるよう組合せることに
より、スクリーンの開孔径以下の径を有する棒状
体を含む粉粒体から粉粒体のみを選択的に分別す
ることを可能としたスクリーンを用いたふるい分
け装置を提供する。 The present invention was created in view of the above problem, and by combining multiple perforated plates to form a specific structure, it is possible to reduce the amount of powder and granules that contain rod-shaped bodies with a diameter smaller than the aperture diameter of the screen. To provide a sieving device using a screen that enables selective separation of .
本考案は、傾斜した底面を有するケーシングの
底面上に、間〓をあけて、筒状のスクリーンを回
転可能に設けてなる回転ふるいにおいて、該筒状
のスクリーンとして重合された複数の多孔板より
なり、該複数の多孔板は最も小さい孔を有する多
孔板の開孔径を確保する小間隙をあけ、かつ孔部
の透視径が最も小さい孔を有する多孔板の開孔径
より小さくなる如く構成されたスクリーンを使用
したことを特微とするふるい分け装置である。 The present invention provides a rotary sieve in which a cylindrical screen is rotatably provided at intervals on the bottom surface of a casing having an inclined bottom surface, and the cylindrical screen is formed by a plurality of superposed porous plates. The plurality of perforated plates are configured such that a small gap is formed to ensure the aperture diameter of the perforated plate having the smallest hole, and the transparent diameter of the hole is smaller than the aperture diameter of the perforated plate having the smallest hole. This is a sifting device characterized by the use of a screen.
以下、本考案を添付図面に従つて詳細に説明す
るが、本考案はこれらの添付図面に限定されるも
のではない。 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to these drawings.
第１図及び第２図は、本考案のふるい分け装置
に用いるスクリーンの代表的な態様を示す断面図
である。 1 and 2 are cross-sectional views showing typical aspects of the screen used in the sieving device of the present invention.
本考案において、多孔板１−ａ，１−ｂは公知
のスクリーンに使用されているものが特に制限な
く使用される。例えば、平織，フラツト・トツプ
織，クリンプ織，トン・キヤツプ織，タイ・ロツ
ド織等の網、丸目，角目等の孔を有する鑽孔板が
一般に使用される。第１図は多孔板として鑽孔板
を使用した態様であり、第２図は多孔板として網
を使用した態様である。多孔板１−ａ，１−ｂ
は、図に示すように双方が同じ開孔径の孔２−
ａ，２−ｂを有するのが好ましいが、場合によつ
ては、一方が粉粒体を分別する機能を有する孔の
開孔径Ｄより大きい孔を有するものであつてもよ
い。また、本考案に用いるスクリーンは２枚の多
孔板によつて構成するのが一般的であるが、粉粒
体中に混入した棒状体をより精度よく除去するた
めに３枚あるいはそれ以上の多孔板によつて構成
することもできる。 In the present invention, the perforated plates 1-a and 1-b used in known screens can be used without particular limitation. For example, plain weave, flat top weave, crimp weave, tongue cap weave, tie rod weave, etc., and perforated plates having round, square, etc. holes are generally used. FIG. 1 shows an embodiment in which a perforated plate is used as the perforated plate, and FIG. 2 shows an embodiment in which a mesh is used as the perforated plate. Perforated plates 1-a, 1-b
As shown in the figure, hole 2-
It is preferable to have holes a and 2-b, but in some cases, one of the holes may have a diameter larger than the opening diameter D of the hole having the function of separating the powder or granular material. In addition, the screen used in the present invention is generally composed of two perforated plates, but in order to more accurately remove the rod-like bodies mixed in the powder, three or more porous plates are used. It can also be constructed from a plate.
本考案において、多孔板１−ａ及び１−ｂは、
最も小さい孔を有する多孔板の開孔径Ｄ（この場
合は同一であるのでどちらでもよい）を確保する
小間隙Ｓをあけて重合される。なお、本考案にお
いて多孔板の開孔径とは、孔を通過し得る真球の
最大直径をいう。例えば、円状の孔の場合は、第
３図ａに示すようにその直径が、四角状の孔の場
合は第３図ｂに示すように、孔内で少なくとも対
向する二辺に接する円の直径が開孔径に相当す
る。前記小間隙Ｓは開孔径Ｄを確保する大きさで
あればよいが、この範囲内でできるだけ間隙を小
さくすることが、棒状体の通過を防止するうえで
より効果的である。一般に、上記小間隙Ｓは開孔
径Ｄとの比Ｓ／Ｄが１〜1.5、好ましくは１〜1.2
となるようにすることが好ましい。また、前記多
孔板１−ａ，１−ｂは、孔部の透視径ｄ、すなわ
ち、孔２−ａから孔２−ｂを透視できる最大の径
が最も小さい孔を有する多孔板の開孔径Ｄより小
さくなるように重ねられる。なお、本考案におい
て透視径ｄは前記多孔板の孔の開孔径の定義が準
用される。また、透視径ｄが多孔板の開孔径Ｄよ
り小さいという概念は、透視空間が存在しない態
様を含むものである。透視径ｄは小さい程好まし
い。 In the present invention, the perforated plates 1-a and 1-b are
Polymerization is carried out with a small gap S ensuring the aperture diameter D of the porous plate having the smallest pore (in this case, they are the same, so either one is fine). In the present invention, the aperture diameter of the perforated plate refers to the maximum diameter of a true sphere that can pass through the aperture. For example, in the case of a circular hole, the diameter is as shown in Figure 3a, and in the case of a square hole, as shown in Figure 3b, the diameter is the diameter of a circle that touches at least two opposing sides within the hole. The diameter corresponds to the aperture diameter. The small gap S may have a size that ensures the opening diameter D, but it is more effective to make the gap as small as possible within this range in order to prevent the rod-shaped body from passing through. Generally, the ratio S/D of the small gap S to the opening diameter D is 1 to 1.5, preferably 1 to 1.2.
It is preferable to do so. In addition, the perforated plates 1-a and 1-b have a diameter d of the hole, that is, an aperture diameter D of the perforated plate having a hole with the smallest diameter that allows the hole 2-b to be seen through the hole 2-a. Stacked to make them smaller. In addition, in the present invention, the definition of the aperture diameter of the hole in the perforated plate is applied mutatis mutandis to the see-through diameter d. Further, the concept that the perspective diameter d is smaller than the aperture diameter D of the perforated plate includes a mode in which there is no perspective space. The smaller the diameter d of the transparent lens is, the more preferable it is.
上記したようにスクリーンを構成することによ
り、多孔板の孔を通過し得る粉粒体は、孔２−ａ
から２枚の多孔板１−ａと１−ｂとの間隙を通つ
て孔２−ｂより取り出される。一方、棒状体は開
孔径Ｄに対して透視径ｄが小さいため、その通過
が阻害される。従つて上記スクリーンによれば、
棒状体を含む粉粒体から一定粒子径以下の粉粒体
のみを選択的に分別することが可能である。 By configuring the screen as described above, particles that can pass through the holes of the perforated plate can be
from the hole 2-b through the gap between the two perforated plates 1-a and 1-b. On the other hand, since the rod-shaped body has a diameter d smaller than the aperture diameter D, its passage is obstructed. Therefore, according to the above screen,
It is possible to selectively separate only powders and granules having a certain particle size or less from powders and granules including rod-shaped bodies.
本考案において、多孔板１−ａ，１−ｂを上述
した位置関係に固定する態様は、スクリーンとし
ての機能を阻害しない態様であれば特に制限され
ない。一般には、リブ，ロツド等を多孔板間に存
在させる態様が採用される。 In the present invention, the manner in which the perforated plates 1-a and 1-b are fixed in the above-mentioned positional relationship is not particularly limited as long as it does not impede the function as a screen. Generally, a mode is adopted in which ribs, rods, etc. are present between the perforated plates.
また、本考案において多孔板１−ａ，１−ｂは
夫々同一の開孔径及び構造ものを用いることが好
ましいが、場合によつては異種の多孔板を組合せ
ることもできる。上記した異種の多孔板を組合せ
る態様において、多孔板間で孔の間隔が異なる場
合は、スクリーン面上に存在する孔の70％以上、
好ましくは80％以上が本考案の条件を満足するよ
う多孔板の組合せを選択することが好ましい。 Further, in the present invention, it is preferable that the perforated plates 1-a and 1-b have the same opening diameter and structure, but in some cases, different types of perforated plates may be combined. In the above-described embodiment in which different types of perforated plates are combined, if the distance between the holes is different between the perforated plates, 70% or more of the holes existing on the screen surface,
It is preferable to select a combination of perforated plates such that 80% or more of the perforated plates satisfy the conditions of the present invention.
本考案のふるい分け装置は、傾斜した底面を有
するケーシングの底面上に、間〓をあけて、筒状
のスクリーンを回転可能に設けてなる公知の回転
ふるいに、該スクリーンとして上記の特定の構造
のスクリーンを用いたものである。例えば、第４
図はトロンメルおスクリーンとして前記の構造の
スクリーンを使用した態様を示す部分断面図であ
る。３はトロンメルのケーシングであり、この中
にスクリーンとして円錘状に加工された多孔板１
−ａ及び１−ｂが該多孔板の開孔径Ｄを確保し得
る小間隙をあけ、かつ多孔板１−ａの孔２−ａか
ら多孔板１−ｂから孔２−ｂの透視径ｄが開孔径
Ｄより小さくなるように重合されたスクリーンが
設けられている。第４図において、回転する円錘
状のスクリーン内に前記した棒状体を含むペレツ
トを供給すると、多孔板の開孔径以下のペレツト
は多孔板１−ａの孔２−ａ→多孔板１−ａと１−
ｂとの小間隙→多孔板１−ｂの孔２−ｂという順
序でスクリーンを通過してケーシングに至り、そ
の端部より取出される。一方、棒状体４は、図に
示すように多孔板１−ａの孔２−ａから多孔板１
−ｂの孔２−ｂを通過することができず、内部に
残るため、ケーシングの端部より取出されるペレ
ツト中に棒状体が混入するのを効果的に防止する
ことができる。また、本考案のふるい分け装置を
使用する場合、孔２−ａで補促された棒状体はス
クリーンの回転により該孔の位置が上面に至つた
ときスクリーン内に脱落するため、棒状体による
孔のつまりを効果的に防止することができ好まし
い。 The sieving device of the present invention uses a known rotary sieve, which has a cylindrical screen rotatably provided on the bottom surface of a casing having an inclined bottom surface, with a space therebetween. It uses a screen. For example, the fourth
The figure is a partial sectional view showing an embodiment in which the screen having the above structure is used as a trommel screen. 3 is a trommel casing, inside which is a perforated plate 1 processed into a conical shape as a screen.
-a and 1-b have a small gap that can secure the aperture diameter D of the perforated plate, and the diameter d of the perforated plate 1-a through the perforated plate 1-b is A polymerized screen is provided so that the opening diameter is smaller than D. In FIG. 4, when pellets containing the above-mentioned rod-shaped bodies are fed into a rotating conical screen, pellets having a diameter smaller than the aperture of the perforated plate are separated from the holes 2-a of the perforated plate 1-a → the perforated plate 1-a. and 1-
It passes through the screen in the order of the small gap with the hole 2-b of the perforated plate 1-b, reaches the casing, and is taken out from the end thereof. On the other hand, the rod-shaped body 4 is inserted into the perforated plate 1 from the hole 2-a of the perforated plate 1-a as shown in the figure.
Since the pellets cannot pass through the holes 2-b and remain inside, it is possible to effectively prevent the rod-shaped bodies from being mixed into the pellets taken out from the end of the casing. In addition, when using the sieving device of the present invention, the rod-shaped bodies supported by the holes 2-a fall into the screen when the positions of the holes reach the top surface due to the rotation of the screen. This is preferable because it can effectively prevent clogging.
第１図及び第２図は本考案に用いるスクリーン
の代表的な態様を示す断面図、第３図は本考案に
用いる多孔板の一態様を示す斜視図、第４図は回
転ふるいとしてトロンメルを使用した本考案の代
表的な態様を示す部分断面図である。また、図に
おいて、１−ａ，１−ｂは多孔板、２−ａ，２−
ｂは孔、３はケーシング、４は棒状体、Ｄは開孔
径、ｄは透視径、Ｓは多孔板２−ａと２−ｂとの
小間隙を夫々示す。
Figures 1 and 2 are cross-sectional views showing typical aspects of the screen used in the present invention, Figure 3 is a perspective view showing one aspect of the perforated plate used in the present invention, and Figure 4 is a trommel used as a rotating sieve. FIG. 2 is a partial cross-sectional view showing a typical embodiment of the present invention used. In addition, in the figure, 1-a, 1-b are perforated plates, 2-a, 2-
b is a hole, 3 is a casing, 4 is a rod-shaped body, D is an opening diameter, d is a perspective diameter, and S is a small gap between the perforated plates 2-a and 2-b.
Claims (1)
間〓をあけて、筒状のスクリーンを回転可能に設
けてなる回転ふるいにおいて、該筒状のスクリー
ンとして重合された複数の多孔板よりなり、該複
数の多孔板は最も小さい孔を有する多孔板の開口
径を確保する小間〓をあけ、かつ孔部の透視径が
最も小さい孔を有する多孔板の開口径より小さく
なる如く構成されたスクリーンを使用したことを
特徴とするふるい分け装置。 On the bottom of the casing with an inclined bottom,
A rotary sieve comprising a rotatable cylindrical screen spaced apart from each other, the cylindrical screen comprising a plurality of porous plates polymerized together, the plurality of perforated plates having the smallest pores. 1. A sifting device characterized by using a screen configured such that a booth is opened to ensure an aperture diameter of 1, and the diameter of the pores is smaller than the aperture diameter of a perforated plate having the smallest pores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4181984U JPS60155987U (en) | 1984-03-26 | 1984-03-26 | sieving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4181984U JPS60155987U (en) | 1984-03-26 | 1984-03-26 | sieving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60155987U JPS60155987U (en) | 1985-10-17 |
| JPS6344137Y2 true JPS6344137Y2 (en) | 1988-11-16 |
Family
ID=30552001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4181984U Granted JPS60155987U (en) | 1984-03-26 | 1984-03-26 | sieving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60155987U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100407712B1 (en) * | 2000-11-16 | 2003-12-06 | 손신식 | Ball crusher |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57207576A (en) * | 1981-06-16 | 1982-12-20 | Mitsubishi Metal Corp | Screening instrument for powdered body |
-
1984
- 1984-03-26 JP JP4181984U patent/JPS60155987U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57207576A (en) * | 1981-06-16 | 1982-12-20 | Mitsubishi Metal Corp | Screening instrument for powdered body |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60155987U (en) | 1985-10-17 |
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