JPS598782Y2 - Grid screen for screening lumps - Google Patents
Grid screen for screening lumpsInfo
- Publication number
- JPS598782Y2 JPS598782Y2 JP15316879U JP15316879U JPS598782Y2 JP S598782 Y2 JPS598782 Y2 JP S598782Y2 JP 15316879 U JP15316879 U JP 15316879U JP 15316879 U JP15316879 U JP 15316879U JP S598782 Y2 JPS598782 Y2 JP S598782Y2
- Authority
- JP
- Japan
- Prior art keywords
- sieve
- vertical bars
- lattice
- holes
- rubber
- 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
Landscapes
- Combined Means For Separation Of Solids (AREA)
Description
【考案の詳細な説明】
この考案は、塊状物のふるい分け用格子スクリーンに関
し、なかでもふるい分けによる粒度区分つまり分級をし
ようとする処理物中に混在している大塊(ふるい上)の
除去選別、つまり荒ぶるいに供してとくに有用な、格子
スクリーンを提案しようとするものである。[Detailed description of the invention] This invention relates to a lattice screen for screening lumps, and in particular, it is used to classify particles by sieving, that is, to remove and sort out large lumps (on the sieve) mixed in the material to be classified. In other words, I am trying to propose a lattice screen that is particularly useful for rough use.
この種の荒ぶるいで、通常粒径50〜100 mmの大
塊の除去分離をするのに従来くさび形断面の棒鋼や、鉄
道軌条の如きバーを用いた、いわゆるグリズリが用いら
れたが、重量が過大なため、振動ふるい機の構造を頑丈
にせねばならず、作業性も悪い上に、騒音が著しく、寿
命も短かく、そしてバーを個々に交換をする必要上、工
数が嵩む不利が甚しい。In order to remove and separate large lumps with a grain size of 50 to 100 mm, so-called grizzly mills, which use steel bars with a wedge-shaped cross section or bars like railroad tracks, have been used to remove and separate large lumps with a grain size of 50 to 100 mm. Since the bar is excessively large, the structure of the vibrating sieve machine must be made strong, and the workability is poor, the noise is significant, the lifespan is short, and it is necessary to replace the bars individually, which increases the number of man-hours. Yes.
かようなグリズリも含めて一般的な金属スクリーンを用
いる振動ふるい機における著大な騒音は、ラバースクリ
ーンすなわちゴムまたはゴム状弾性材料の多孔板状或形
体の代替使用により著しく軽減されることろから、製鉄
所をはじめとして砕石場や、鉱山などの大規模なふるい
処理施設で、ラバースクリーンが多用されるに至ったが
、単純な多孔板状すなわち平面的なふるい面にふるい孔
を開口させただけのラバースクリーンは、グリズリの用
途に供したとき必ずしも所期した機能が期待できながっ
た。Significant noise in vibrating screen machines using common metal screens, including such grizzly screens, can be significantly reduced by the alternative use of rubber screens, i.e., perforated plates or shapes of rubber or rubber-like elastic materials. Rubber screens have come to be widely used in large-scale sieve processing facilities such as steel mills, stone crushing plants, and mines. However, when using a rubber screen for grizzly applications, it was not always possible to expect the desired functionality.
すなわち、摩耗寿命,ふるい分け性能および目詰り発生
の諸点が、不満足なのであって、とくに上記金属バーに
よるグリズリにおけるすぐれたふるい分け能力を得よう
として、上るい分けをすべき処理物の供給流動の向きに
ふるい孔を縦長に形或したとき、このふるい孔の縁には
じまる摩耗が著しく、これによって拡大したふるい孔に
おける大塊のはまり込みが平坦なふるい面にて直接ふる
い孔に浸入すべき塊状物に加わることによる目詰り頻度
の増加によって、ふるい分け性能が害され、保守点検お
よび補修に手間がかかる不利が甚しく、一般に使用でき
ないとされていたのである。In other words, the wear life, sieving performance, and occurrence of clogging are unsatisfactory.In particular, in order to obtain excellent sieving performance in the grizzly using the metal bar, the direction of the feed flow of the material to be sieved is When the sieve hole is shaped vertically, the wear that starts at the edge of the sieve hole is significant, and as a result, large lumps get stuck in the enlarged sieve hole, and the flat sieve surface causes lumps that should directly enter the sieve hole. This increased clogging frequency impairs sieving performance and requires time and effort for maintenance, inspection, and repair, which is a serious disadvantage, and it was generally considered unusable.
この考案はかような難点についての有利な解決を実現す
るものであって、塊状のよろい分けをすべき処理物の供
給流動の向きに沿い、うね状をなしてふるい面から突出
する複数の縦桟と、これら縦桟の間隔とほぼ同等の幅で
ふるい面に縦長をなして開口する複数のふるい孔とを有
し、各ふるい孔の中央に向け縦桟側面から突出してふる
い孔の幅を最小に狭める横向きの張出しをそなえるゴム
またはゴム状弾性材料の格子状戒形体からなるものとし
て、ふるい孔の縁にはじまる摩耗およびその急速な或長
を縦桟により有効に防止することによって、ふるい目の
拡大によるふるい分け能力の減退を阻止するとともに格
子スクリーンの使用寿命の延長を図るものであり、また
この縦桟側面がらふるい孔の幅を最小に狭める横向きの
張出しによってふるい下に長大な処理物の混入を回避す
るものである。This invention realizes an advantageous solution to the above-mentioned difficulties, and consists of a plurality of ridge-like structures protruding from the sieve surface along the direction of the feed flow of the material to be separated into chunks. It has vertical bars and a plurality of sieve holes that open vertically on the sieve surface with a width approximately equal to the interval between these vertical bars, and the width of the sieve holes protrudes from the side of the vertical bars toward the center of each sieve hole. The sieve is made of a lattice-like structure of rubber or rubber-like elastic material with lateral overhangs that narrow the sieve to a minimum, and the longitudinal bars effectively prevent wear starting at the edge of the sieve hole and its rapid elongation. This prevents the reduction in sieving ability due to the enlargement of the sieves and extends the service life of the lattice screen.In addition, the horizontal overhangs on the sides of the vertical bars minimize the width of the sieve holes, making it possible to prevent large materials from being processed under the sieve. This is to avoid contamination.
この考案では、さらに縦桟の上面側における摩耗防止を
図りかつふるい目につまるおそれのある大きさの処理物
の転向流下を適切に導くように、上記の張出しに対応し
て縦桟上面にて縦長に隆起した局部の台丘状突起を設け
て、摩耗防止にあわせ目詰り発生の回避を図ること、ま
たふるい孔を縦長に開口させたふるい面はとくにふるい
分けをした処理物(ふるい上)の流出側でより大きい処
理物の衝突にさられ摩耗を生じ易いため、この流出側に
対し、処理物の流入側に偏ったふるい孔の開口を有する
ものとして流出側により広い縁をふるい面に形或するこ
と、さらに縦桟またはこれに加えてふるい孔を挾むふる
い面でも、それらの内部に埋設合体した、棒鋼,平鋼な
どの補強心によって剛性を高めておくことが何れも実施
上のぞましい。In this design, in order to prevent wear on the top surface of the vertical bars and to appropriately guide the turning flow of the processed material that is large enough to cause clogging in the sieves, the top surface of the vertical bars is designed to correspond to the above-mentioned overhang. A vertically raised local ridge-like protrusion is provided to prevent wear and to avoid clogging, and the sieve surface with vertically opened sieve holes is particularly suitable for the sieved material (on the sieve). Since the outflow side is more likely to be exposed to collisions with larger materials to be treated and wear out, the sieve hole openings are biased towards the inflow side of the materials to be treated, and the sieve surface is shaped to have wider edges on the outflow side. In addition, it is desirable in practice to increase the rigidity of the vertical bars or, in addition, to the sieve surfaces that sandwich the sieve holes, by reinforcing cores such as steel bars or flat steel embedded and integrated inside them. .
以下実施例についてこの考案による格子スクリーンの第
1図,第2図に示した具体構戒を説明する。The specific structure of the lattice screen according to this invention shown in FIGS. 1 and 2 will be explained below with reference to an embodiment.
図中1は格子スクリーンで、両側耳縁2,2により、図
示しない振動ふるい機の側粋に、またこの例では中央溝
3の底で同じく縦枠に対してそれぞれ固定取付けをして
、図中矢印4で示したふるい分けをしようとする処理物
の供給流動の向きに多数を並設する。Reference numeral 1 in the figure is a lattice screen, which is fixedly attached to the side of a vibrating sieve machine (not shown) using the edges 2 and 2 on both sides, and also to the vertical frame at the bottom of the central groove 3 in this example. A large number of them are arranged in parallel in the direction of the supply flow of the material to be sieved, which is indicated by the middle arrow 4.
なお中央溝3には図示しないが上記取付け後に棒状ゴム
の充てんによりねし頭を保護する。Although not shown in the drawings, the central groove 3 is filled with a rod-shaped rubber to protect the screw head after the installation.
格子スクリーン1は、ゴムまたはゴム状弾性材料の格子
戊形体として用意するが、その成形の際、図のように矢
4の向きに沿ううね状をなしてふるい面8から突出する
複数の縦桟5とこれら縦桟の間隔とほぼ同等の幅でふる
い面8に縦長をなして開孔するふるい孔6およびこのふ
るい孔6の中央に向け縦桟5の側面から突出してふるい
孔6の幅を最小に狭める横向きの張出し7とを形或する
。The lattice screen 1 is prepared as a lattice rectangular body made of rubber or a rubber-like elastic material, and when it is formed, a plurality of vertical ridges protruding from the sieve surface 8 in the direction of the arrow 4 are formed as shown in the figure. A sieve hole 6 that is vertically elongated and opened on the sieve surface 8 with a width approximately equal to the interval between the crosspieces 5 and these vertical crosspieces, and a width of the sieve hole 6 that protrudes from the side surface of the vertical crosspiece 5 toward the center of the sieve hole 6. A lateral overhang 7 is formed to minimize the narrowing of the area.
従ってふるい孔6は縦桟5の上面がら一段低いふるい面
8にて、縦長でかつ中狭りに開口し、一方このふるい孔
6は、ふるい面がら裏面に向け下開きにテーパー(約5
゜以下)を慣例に従って有するものとする。Therefore, the sieve hole 6 opens vertically and narrowly in the sieve surface 8, which is one step lower than the upper surface of the vertical bar 5, and on the other hand, the sieve hole 6 tapers downward toward the back side of the sieve surface (approx.
゜ or less) shall be held in accordance with customary practice.
縦桟5はとくに第2図に明らかな如くふるい孔6が開口
するふるい面8に対してやや高く隆起したうね状として
、隣接した縦桟間にわたるような大塊の流下に対してふ
るい面8を、擦過による摩耗から有効に防護するのに役
立つ。As is particularly clear in FIG. 2, the vertical bars 5 have a ridge shape that is raised slightly higher than the sieve surface 8 where the sieve holes 6 open, so that the sieve surface is protected against the flow of large lumps that extend between adjacent vertical bars. 8 from abrasion due to abrasion.
張出し7は、ふるい孔6が縦長をなすことがらふるい下
に混入するかも知れない長大な処理物をできる限り抑制
するためであり、ここにふるい孔6を縦長にしたのは目
詰りの防止に有利なためである。The purpose of the overhang 7 is to suppress as much as possible a long material to be processed that may get mixed in under the sieve since the sieve hole 6 is vertically long, and the purpose of making the sieve hole 6 vertically is to prevent clogging. This is because it is advantageous.
さらに縦桟5の上面には、張出し7のそれぞれに対応し
て縦長に隆起した局部の台丘状突起9を設けるを可とし
、この突起9はふるい孔6の張出し7にてはじまる摩耗
を防止するように張出し7の前後にわたって台丘状をな
すことが好ましい。Further, on the upper surface of the vertical crosspiece 5, it is possible to provide a local ridge-like protrusion 9 that is vertically raised in correspondence with each of the overhangs 7, and this protrusion 9 prevents wear that starts at the overhang 7 of the sieve hole 6. It is preferable to form a pedestal shape over the front and back of the overhang 7.
ふるい孔6を縦長に開口させたふるい面8における処理
物の流入側と流出側をそれぞれ横桟10,11と呼んで
区分すると、格子スクリーン1の幅にわたり全部の縦桟
5を横につなぐ前,後両縁に相当する場合の例にて図示
したが、矢印4の向きで多段をなすふるい孔6の相互間
に位置する中間桟を有する変形も当然に可能なほか、こ
こに前縁つまり矢印4で示した処理物の流入側に対し、
後縁すなわち粗大処理物(ふるい上)の流出側の方を、
より広い(矢印方向長さの大きい)縁として流出処理物
がふるい孔6の後端に衝突することによる摩耗の対策と
することが好ましく、とくに中間桟を用いる場合につい
ては、前後縁の合計にわたる矢印方向長さを有するを可
とする。If the inflow side and the outflow side of the processed material on the sieve surface 8 where the sieve holes 6 are vertically opened are called horizontal bars 10 and 11, respectively, and are divided, the width of the lattice screen 1 and the width of the lattice screen 1 will be the width of the horizontal bars 5. , the rear edges are shown as an example, but it is naturally possible to make a modification in which intermediate bars are located between the multiple sieve holes 6 in the direction of the arrow 4, and the front edge or For the inflow side of the processed material shown by arrow 4,
The trailing edge, that is, the outflow side of the coarse processed material (on the sieve),
It is preferable to use a wider edge (larger length in the direction of the arrow) to prevent wear caused by the colliding of the effluent treated material with the rear end of the sieve hole 6. In particular, when using an intermediate crosspiece, it is preferable to use a wider edge (larger length in the direction of the arrow). It is possible to have a length in the direction of the arrow.
縦桟5または横桟10.11には、第4図に示したよう
に棒鋼状の補強心12.13をそれらの内部に埋設合体
することが、さらに耳縁2と、中央溝3の底とに、前者
につき第5図に平鋼状の場合を示したような補強心14
を、やはり内部埋設で合体するを可とする。As shown in FIG. 4, reinforcing cores 12.13 in the form of steel bars can be buried and integrated inside the vertical bars 5 or the horizontal bars 10.11. For the former, reinforcing core 14 as shown in Fig. 5 in the case of flat steel.
However, it is still possible to combine them by burying them internally.
以上図示説明した幅1800 mm ,長さ5QQmm
の格子スクリーンを5枚縦並べして1800 X 30
00mm、厚み35 mmのふるい面を形或し、ふるい
孔6は120 X 480 mm、一対の張出し7を、
40mm間隔で30mmにわたり対向させ、縦桟5は、
隣接間隔を130mm、幅を72mm、厚み5Qmmと
して、その上面255 mmにわたり幅60mm、高さ
20mmで局部の台丘状突起9を形或した開孔率43.
7%、重量46 kg/枚の供試スクリーンを、傾斜角
15゜に設置して毎時450トンのコークスの大塊除去
に使用した。Width 1800 mm, length 5QQmm as shown and explained above
1800 x 30 by lining up 5 lattice screens vertically
A sieve surface of 00 mm and a thickness of 35 mm is formed, the sieve hole 6 is 120 x 480 mm, and a pair of overhangs 7 are formed.
The vertical bars 5 are arranged to face each other over a distance of 30 mm at intervals of 40 mm.
The adjacent space is 130 mm, the width is 72 mm, and the thickness is 5 Q mm, and a local pedestal-like protrusion 9 is formed over the upper surface 255 mm with a width of 60 mm and a height of 20 mm.The opening ratio is 43.
A test screen weighing 7% and weighing 46 kg/screen was installed at an angle of inclination of 15° and used to remove large coke lumps at a rate of 450 tons per hour.
ここに従来のバ一式グリズリが1.5か月の使用寿命で
あったのに対し120 X 120 mmの角孔をあけ
た比較多孔ラバースクリーンでは5.5か月に及ぶ使用
寿命向上の反面、目詰り発生70%以上となってふるい
分け性能の著大な低下を生じ、一方120 X 230
mmの横長孔に代えた改良ラバースクリーンは、寿命
4か月、目詰り発生45%でなお不充分であった。Here, while the conventional one-piece grizzly has a service life of 1.5 months, the comparative porous rubber screen with square holes of 120 x 120 mm has an improved service life of 5.5 months. The occurrence of clogging was 70% or more, resulting in a significant decrease in sieving performance.
The improved rubber screen that replaced the mm horizontally long holes had a service life of 4 months and a clogging rate of 45%, which was still unsatisfactory.
しかるに上記実施例により3,4か月以上の使用寿命の
下で目詰り発生30%以下で、+ 140 mmのふる
い下混入率10%以下の高度なふるい分け性能が実現さ
れ、とくに図示について説明をした下開きテーパ3゜と
したときには目詰り20%以下の高性能が達成できた。However, with the above embodiment, a high degree of sieving performance was achieved with less than 30% clogging and less than 10% contamination rate under the +140 mm sieve over a service life of 3 to 4 months or more. When the downward opening taper was set to 3 degrees, high performance with less than 20% clogging was achieved.
かような性能の飛躍向上は、ふるい目の縦横比3.2〜
4.0の範囲で、全うすることができた。Such a dramatic improvement in performance is due to the aspect ratio of 3.2 to 3.2.
I was able to complete the test within the 4.0 range.
なお第6図にはふるい孔6の幅がその縦長中央域に至る
間に漸減して該域で最小幅となる別例を示す。In addition, FIG. 6 shows another example in which the width of the sieve hole 6 gradually decreases while reaching the vertically elongated central region, and becomes the minimum width in that region.
以上述べたようにしてこの考案によれば目詰りの悪化を
生じないで、バ一式グリズリの使用寿命を3倍に近くま
で増強でき、しかも低騒音化による作業循環の改善は著
しい。As described above, according to this invention, the service life of the grizzly grizzly can be nearly tripled without causing clogging, and the work circulation is significantly improved by reducing noise.
第1図は平面図、第2図は正面図、第3図は側面図、第
4図,第5図は、それぞれ第1図のA−A,B一B各断
面図、第6図はふるい孔の変形例を示す説明図である。
1・・・・・・格子スクリーン、4・・・・・・処理物
の供給流動の向き、5・・・・・・縦桟、6・・・・・
・ふるい孔、7・・・・・・張出し、9・・・・・・台
丘状突起、10.11・・・・・・横桟、12,13.
14・・・・・・補強心。Figure 1 is a plan view, Figure 2 is a front view, Figure 3 is a side view, Figures 4 and 5 are sectional views taken along A-A and B-B in Figure 1, respectively, and Figure 6 is a It is an explanatory view showing a modification of a sieve hole. 1... Lattice screen, 4... Direction of supply flow of processed material, 5... Vertical bars, 6...
- Sieve hole, 7... overhang, 9... pedestal-like projection, 10.11... horizontal bar, 12, 13.
14... Reinforcement mind.
Claims (5)
に沿い、うね状をなしてふるい面から突出する複数の縦
桟と、これら縦桟の間隔とほぼ同等の幅でふるい面に縦
長をなして開口する複数のふるい孔とを有し、各ふるい
孔の中央に向け縦桟側面から突出してふるい孔の幅を最
小に狭める横向きの張出しをそなえるゴムまたはゴム状
弾性材料の格子状或形体からなることを特徴とする、塊
状物のふるい分け用格子スクリーン。1. A plurality of vertical bars protrude from the sieve surface in a ridge shape along the direction of the supply flow of the material to be sieved into chunks, and a vertically elongated structure on the sieve surface with a width approximately equal to the spacing between these vertical bars. A lattice-shaped body made of rubber or a rubber-like elastic material having a plurality of sieve holes that open at the center of each sieve hole, and having a horizontal overhang that projects from the side surface of the longitudinal bar toward the center of each sieve hole to minimize the width of the sieve holes. A grid screen for sifting lumps, which is characterized by:
隆起した局部の台丘状突起をもつ、実用新案登録請求の
範囲1記載の格子スクリーン。2. The lattice screen according to claim 1, wherein the vertical bars have local ridge-like protrusions vertically raised on the upper surface of the vertical bars corresponding to the extension of the vertical bars.
実用新案登録請求の範囲1又は2記載の格子スクリーン
。3. The lattice screen according to claim 1 or 2, in which the vertical bars have a vertical reinforcing core embedded therein.
けをすべき処理物の流入側にて、ふるい上の流出側に対
し偏ったふるい孔の開口配列を有する実用新案登録請求
の範囲1,2又は3記載の格子スクリーン。4. Utility model registration claims 1, 2 or 3, in which a sieve surface with longitudinally opened sieve holes has an opening arrangement of sieve holes that is biased on the inflow side of the material to be sieved with respect to the outflow side of the sieve. 3. The lattice screen described in 3.
横補強心を有する実用新案登録請求の範囲1,2.3又
は4記載の格子スクリーン。5. The lattice screen according to claim 1, 2.3 or 4, wherein the sieve surface has horizontal reinforcing cores embedded and integrated inside the sieve holes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15316879U JPS598782Y2 (en) | 1979-11-06 | 1979-11-06 | Grid screen for screening lumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15316879U JPS598782Y2 (en) | 1979-11-06 | 1979-11-06 | Grid screen for screening lumps |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5669978U JPS5669978U (en) | 1981-06-09 |
JPS598782Y2 true JPS598782Y2 (en) | 1984-03-19 |
Family
ID=29383962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15316879U Expired JPS598782Y2 (en) | 1979-11-06 | 1979-11-06 | Grid screen for screening lumps |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS598782Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6569660B2 (en) * | 2016-12-27 | 2019-09-04 | Jfeスチール株式会社 | Grizzly equipment |
-
1979
- 1979-11-06 JP JP15316879U patent/JPS598782Y2/en not_active Expired
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Publication number | Publication date |
---|---|
JPS5669978U (en) | 1981-06-09 |
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