JPS6115957Y2 - - Google Patents

Description

【考案の詳細な説明】[Detailed explanation of the idea]

本考案は、破砕原料を細割クラツシヤへ供給す
るホツパー出口部に工夫を施し、細割クラツシヤ
の歯板間隙のセツテイングを狭ばめて使用した場
合にも、安定した操業と性能を発揮できるように
した考案に関する。 この種の細割クラツシヤとしては、固定歯板と
可動歯板でＶ字状の破砕室を形成するジヨークラ
ツシヤが使用されるが、近来、特に20mm以下の生
コンクリート用骨材を生産するため、両歯板で形
成される出口間隙を狭めた状態で使用されること
が多くなつてきた。ところが、このように出口間
隙を小さくすると、これ迄にはなかつた動力消費
の増大、歯板の偏摩耗、軸受の過負荷、破砕能力
の激減、破砕粒度分布の変動、破砕粒形の悪化
等、種々のトラブルを発生し、安定した操業と性
能とが発揮できなくなつた。本考案者等はかかる
不都合の原因と改善策について検討してきた結
果、これは以下の原因に基因するものと思われ
た。すなわち、細割クラツシヤにおける破砕室を
上部、中間および下部の三つに分けるとき、破砕
原料を直接歯板で破砕するのは、破砕物を介して
可動歯板の破砕面が固定歯板の破砕面に対しほぼ
直角に近い斜上方の押上げ力を呈する直線状往復
運動を行なう下部において生じ、斜上方の楕円状
往復運動を行なう中間においては、可動歯板の上
方移行の際、破砕原料の取込みを促進し、下方移
行の際、破砕原料を強制押出して被砕物同志で押
しつぶすことはあつても、両歯板による直接の破
砕は行なわれるまでに至らない。また、ほぼ円運
動を行なう上部では破砕効果の期待できない域で
ある。しかるに従来の細割クラツシヤへの被砕原
料の投入は、ホツパー出口が破砕室の入口近傍に
位置していたし、ホツパー出口横巾は歯板横巾と
ほぼ等しくしていたため、出口間隙を狭めれば狭
めるほど、破砕室上方まで被砕原料を充満してし
まい、叙上の如き不都合を誘発する結果を招来し
ていたのである。 本考案は、そこで、破砕室への被砕原料供給位
置を、もつと破砕室内部の奥に下げることができ
るようにすると共に、その原料供給口の横巾を狭
めることで原料供給口から被砕原料が破砕室内に
一定の安息角で拡がるとき、上方に空間を確実に
形成することによつて、上記した欠点を解消せん
とするものであるが、被砕原料の細割クラツシヤ
は固定歯板と可動歯板とで断面Ｖ字状の破砕室を
形成したジヨウクラツシヤとなし、被砕原料を破
砕室へ供給するホツパーの出口部はその横巾を歯
板横巾よりも遥かに狭めて小さくなし、そのホツ
パーの出口部に新たに筒管を昇降自在に嵌挿する
と共に、筒管を破砕室内の適宜挿入高さ位置にセ
ツト可能とした細割クラツシヤの投入シユート装
置である。添付図面に示す実施例によつて説明す
ると、つぎのとおりである。 第１図には、固定歯板６と可動歯板７による出
口間隙を狭めてセツテイングした細割クラツシヤ
とその投入シユート装置とが示されている。投入
シユート装置を構成するホツパー３の出口部は、
第３図に明らかとしたように、その横巾を歯板
６，７横巾のほぼ1/3程度となるよう狭めて小さ
くしている。このように小さくしたホツパー出口
部には筒管１が昇降自在に嵌挿されている。そし
て、第２図に明らかとしたように、筒管１両側に
は縦長孔２，２を形成し、またホツパー３出口部
両側にはナツト４，４を螺合せるネジ棒５，５を
突設している。そこで縦長孔２，２にネジ棒５，
５を遊嵌後、ナツト４，４で締付けることにより
筒管１をホツパー３に止着自在であるから、筒管
１の破砕室内への挿入位置は適宜セツト可能であ
る。図中、Ａ，Ｂ，Ｃは破砕室の上部、中部、下
部を、またＨは破砕室高さを示しているが、筒管
１の破砕室内への挿入可能な深さｈは少なくとも
1/3Ｈ程度は可能とすることが望ましい。 つぎに上記の構成とした本考案の作用効果につ
いて、第３図に従つて説明すると、連続供給され
る被砕原料は、筒管１の介装によつて、従来より
も遥かに破砕室の下方において供給されること、
更には被砕原料が破砕室内に一点鎖線で示した安
息角で拡がるとき、上方に空間を確実に形成する
ことになるから、破砕室の出口間隙を狭めた場合
でも、破砕効果の期待できない域である破砕室の
上部Ａまで被砕原料を充満させず、むしろ空間と
することができる。この結果は負荷動力を安定さ
せ、クラツシヤの過負荷防止となる。また、筒管
１を破砕室内の適宜挿入高さ位置にセツトするこ
とによつて、一点鎖線で示した一定の安息角でも
つて広がる破砕物は、直接歯板６，７で破砕する
破砕室の下部Ｃ全体に亘つて効果的に広がらすこ
とができる。この結果は、歯板の偏摩耗の防止、
破砕粒形の均一化が可能である。ちなみに被砕原
料を石灰石とし、歯板間セツテイングを10mmと15
mmの二種につき従来品との比較を行なつた結果を
示すと、下表のとおりである。 In this invention, the hopper outlet that supplies the crushed raw material to the finely divided crusher has been devised so that stable operation and performance can be achieved even when the gap between the tooth plates of the finely divided crusher is narrowed. Regarding the idea that was created. As this type of fine crusher, a geo crusher is used, which forms a V-shaped crushing chamber with a fixed tooth plate and a movable tooth plate. It is increasingly being used with the exit gap formed by the tooth plate narrowed. However, reducing the exit gap in this way causes an increase in power consumption that was not possible before, uneven wear of tooth plates, overload of bearings, a drastic decrease in crushing capacity, fluctuations in crushed particle size distribution, deterioration of crushed particle shape, etc. Various troubles occurred, and stable operation and performance could not be achieved. The inventors of the present invention have studied the causes of this inconvenience and measures to improve it, and as a result, it seems that this problem is caused by the following causes. In other words, when the crushing chamber in a fine crusher is divided into three parts, upper, middle, and lower, the crushing raw material is crushed directly by the tooth plates, which means that the crushing surface of the movable tooth plate passes through the crushed material to crush the fixed tooth plate. This occurs in the lower part, which performs a linear reciprocating motion exhibiting an upward pushing force almost perpendicular to the plane, and in the middle part, which performs an obliquely upward elliptical reciprocating motion, when the movable tooth plate moves upward, the crushed raw material Although the uptake is promoted and the crushed raw material is forcibly extruded and crushed by the crushed materials during downward movement, direct crushing by both toothed plates is not carried out. In addition, the upper part, which performs almost circular motion, is an area where no crushing effect can be expected. However, in the case of feeding raw material to be crushed into a conventional crusher, the hopper outlet was located near the entrance of the crushing chamber, and the hopper outlet width was approximately equal to the tooth plate width, so the outlet gap had to be narrowed. As the crushing chamber becomes narrower, the upper part of the crushing chamber is filled with the raw material to be crushed, resulting in the above-mentioned inconvenience. Therefore, the present invention allows the raw material to be crushed to be supplied to the crushing chamber by lowering the supply position to the interior of the crushing chamber, and by narrowing the width of the raw material supply port, When the crushed raw material spreads at a constant angle of repose in the crushing chamber, the above-mentioned drawbacks are reliably formed by forming an upper space. The crusher has a crushing chamber with a V-shaped cross section formed by a plate and a movable tooth plate, and the outlet part of the hopper that supplies the material to be crushed to the crushing chamber has a width that is much narrower than the width of the tooth plate. This is a shredding crusher feeding chute device in which a new cylindrical tube is inserted into the outlet of the hopper so that it can be raised and lowered, and the cylindrical tube can be set at an appropriate insertion height position within the crushing chamber. The following is a description of the embodiments shown in the accompanying drawings. FIG. 1 shows a finely divided crusher set by narrowing the exit gap between a fixed tooth plate 6 and a movable tooth plate 7, and its feeding chute device. The outlet part of the hopper 3 that constitutes the input chute device is
As shown in Fig. 3, the width is narrowed to approximately 1/3 of the width of the tooth plates 6 and 7. A cylindrical pipe 1 is fitted into the outlet of the hopper which has been reduced in size in this manner so as to be able to rise and fall freely. As shown in Fig. 2, vertical holes 2, 2 are formed on both sides of the cylindrical pipe 1, and threaded rods 5, 5 into which nuts 4, 4 are screwed are protruded from both sides of the outlet of the hopper 3. are doing. Therefore, the threaded rod 5 is inserted into the vertical holes 2, 2.
After loosely fitting the cylindrical tube 1 into the crushing chamber, the cylindrical tube 1 can be fixed to the hopper 3 by tightening the nuts 4, 4, so that the insertion position of the cylindrical tube 1 into the crushing chamber can be set as appropriate. In the figure, A, B, and C indicate the upper, middle, and lower parts of the crushing chamber, and H indicates the height of the crushing chamber.
It is desirable to allow approximately 1/3H. Next, the operation and effect of the present invention having the above-mentioned structure will be explained with reference to FIG. being fed downward;
Furthermore, when the raw material to be crushed spreads within the crushing chamber at the angle of repose shown by the dashed line, a space is definitely formed above, so even if the outlet gap of the crushing chamber is narrowed, there will be no area where crushing effects can be expected. The upper part A of the crushing chamber is not filled with the raw material to be crushed, but rather can be left as a space. As a result, the load power is stabilized and the crusher is prevented from being overloaded. In addition, by setting the cylindrical pipe 1 at an appropriate insertion height position in the crushing chamber, the crushed materials that spread even at a constant angle of repose shown by the dashed line can be directly crushed by the tooth plates 6 and 7 in the crushing chamber. It can be effectively spread over the entire lower part C. This result helps prevent uneven wear of the tooth plate.
It is possible to make the crushed grain shape uniform. By the way, the raw material to be crushed is limestone, and the tooth plate setting is 10 mm and 15 mm.
The table below shows the results of comparing two types of mm with conventional products.

【表】 上表から、破砕能力を低下させず、しかも消費
動力を40％程度低減させることがわかるが、これ
は筒管１を最適高さとすることによつて、理想的
な原料破砕が行なわれたためにほかならず、その
効果は極めて優れている。[Table] From the above table, it can be seen that the crushing capacity is not reduced and the power consumption is reduced by about 40%. This is due to the fact that the effect is extremely excellent.

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

第１図は本考案の要部を示す断面図、第２図は
ホツパーと筒管の分解斜視図、第３図は本考案の
作説明用の図である。 １……筒管、２……縦長孔、３……ホツパー、
４……ナツト、５……ネジ棒。 FIG. 1 is a sectional view showing the main parts of the present invention, FIG. 2 is an exploded perspective view of the hopper and the tube, and FIG. 3 is a diagram for explaining the operation of the present invention. 1...tube, 2...vertical hole, 3...hopper,
4...Natsuto, 5...Threaded rod.

Claims (1)

【実用新案登録請求の範囲】 １ 被砕原料の細割クラツシヤは固定歯板６と可
動歯板７とで断面Ｖ字状の被砕室を形成したジ
ヨウクラツシヤとなし、被砕原料を被砕室へ供
給するホツパー３の出口部はその横巾を歯板
６，７横巾よりも遥かに狭めて小さくなし、そ
のホツパー３の出口部に筒管１を昇降自在に嵌
挿すると共に、筒管１を破砕室内の適宜挿入高
さ位置にセツト可能としてなる細割クラツシヤ
用投入シユート装置。 ２ 筒管１の両側には縦長孔２，２が形成され、
またホツパー３の出口部両側には該縦長孔２，
２に遊嵌することができるナツト４，４付きネ
ジ棒５，５を突設した実用新案登録請求の範囲
第１項記載の細割クラツシヤ用投入シユート装
置。[Scope of Claim for Utility Model Registration] 1. The crusher for finely pulverizing the raw material to be crushed is a crusher in which a crushing chamber having a V-shaped cross section is formed by a fixed tooth plate 6 and a movable tooth plate 7, and the raw material to be crushed is placed in the crushing chamber. The width of the outlet of the hopper 3 for supplying to the hopper is much narrower than the width of the tooth plates 6 and 7, and the cylindrical pipe 1 is inserted into the outlet of the hopper 3 so as to be able to rise and fall freely. 1 can be set at an appropriate insertion height position in a crushing chamber. 2 Vertical holes 2, 2 are formed on both sides of the cylindrical pipe 1,
In addition, the vertical holes 2,
2. A charging chute device for a finely divided crusher according to claim 1, wherein threaded rods 5, 5 with nuts 4, 4, which can be fitted loosely into the screw rods 2, are protrudingly provided.