JP2005161237A - Raw material introduction part of air flow type fine powder crusher - Google Patents

Raw material introduction part of air flow type fine powder crusher Download PDF

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JP2005161237A
JP2005161237A JP2003405634A JP2003405634A JP2005161237A JP 2005161237 A JP2005161237 A JP 2005161237A JP 2003405634 A JP2003405634 A JP 2003405634A JP 2003405634 A JP2003405634 A JP 2003405634A JP 2005161237 A JP2005161237 A JP 2005161237A
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raw material
rotor blade
casing
region
airflow
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JP4372525B2 (en
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Kazutomo Hayashimoto
和智 林元
Katsuya Takeshima
克哉 竹島
Kazuhiko Toyomura
和彦 豊村
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PURAUDO KK
Furukawa Co Ltd
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PURAUDO KK
Furukawa Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent a raw material from building up and growing at the edge part of the raw material building-up side of a raw material feeding port. <P>SOLUTION: In the subject air flow type fine powder crusher having a first rotor blade 11 and a second rotor blade 12 at a predetermined distance from each other in a casing 10, forming a swirl area in the rear of the first rotor blade in the casing and a crushing area between the first rotor blade and the second rotor blade, having a taper wall 22 gradually decreasing a diameter from the crushing area to the front on the casing, having an inclined plane 29 opposing the taper wall to the second rotor blade to form a classification space between the taper wall and the inclined plane, and finely crushing a raw material M introduced from a raw material introduction part 18 by a swirl air flow generated by the rotation of the first rotor blade and the second rotor blade, the raw material introduction part 18 is constituted so as to introduce the raw material M toward the edge part 31 of the raw material building-up side of the raw material feeding port 21 opened in the rear of the swirl area of the casing 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、農産物や鉱物等の各種原料を粉砕するために用いられる気流式微粉砕機の原料投入部の形状に関するものである。   The present invention relates to the shape of a raw material charging portion of an airflow fine pulverizer used for pulverizing various raw materials such as agricultural products and minerals.

従来、農産物や鉱物等の各種原料を粉砕するために気流式微粉砕機が用いられている。この気流式微粉砕機は、図３に示すように、ケーシング１０が投入側ケーシング１３と、センターケーシング１４と排出側ケーシング１５とで構成されており、このケーシング１０の内部には、投入側ケーシング１３を貫通するシャフト１６の前端（図３上、左端）に、第一回転翼１１と第二回転翼１２とが所定距離互いに離隔した状態で取付けられている。シャフト１６はフレーム１７によりベアリング（図示略）を介して回転自在に支持されている。シャフト１６の後端にはモータ（図示略）が設けられ、シャフト１６に回転を与える。   Conventionally, an airflow type fine grinder has been used to grind various raw materials such as agricultural products and minerals. As shown in FIG. 3, in this airflow type fine pulverizer, the casing 10 is composed of an input side casing 13, a center casing 14, and a discharge side casing 15. The first rotary blade 11 and the second rotary blade 12 are attached to the front end of the shaft 16 that passes through the left end of the shaft 16 in a state where they are separated from each other by a predetermined distance. The shaft 16 is rotatably supported by a frame 17 via a bearing (not shown). A motor (not shown) is provided at the rear end of the shaft 16 to rotate the shaft 16.

センターケーシング１４は円筒形で、第一回転翼１１と第二回転翼１２の間に粉砕領域が形成されている。
投入側ケーシング１３には、シャフト１６に対して垂直な方向に原料を投入する原料投入部１８が設けられている。また、センターケーシング１４の後端部から後方に向けて径が漸減するテーパー壁１９、テーパー壁１９の後端にシャフト１６に対して垂直な垂壁２０が設けられておりセンターケーシング１４の第一回転翼１１から投入側ケーシング１３の垂壁２０までの間に亙って旋回領域が形成されている。テーパー壁１９には原料供給口２１が開口しており、旋回領域の後部のテーパー状の部分が、原料を原料供給口２１から第一回転翼１１側へ円滑に導入するための導入部となっている。 The center casing 14 has a cylindrical shape, and a pulverization region is formed between the first rotary blade 11 and the second rotary blade 12.
The charging casing 13 is provided with a raw material charging portion 18 for charging the raw material in a direction perpendicular to the shaft 16. Further, a tapered wall 19 whose diameter gradually decreases rearward from the rear end portion of the center casing 14, and a vertical wall 20 perpendicular to the shaft 16 is provided at the rear end of the tapered wall 19. A swirl region is formed between the rotary blade 11 and the vertical wall 20 of the charging casing 13. A raw material supply port 21 is opened in the tapered wall 19, and a tapered portion at the rear of the swivel region serves as an introduction portion for smoothly introducing the raw material from the raw material supply port 21 to the first rotary blade 11. ing.

排出側ケーシング１５は、前方に向けて径が漸減するテーパー壁２２を有しており、前端部には排出口２３が開口している。この排出口２３には、吸引管を介して吸引ファンが接続される。
第一回転翼１１と第二回転翼１２は、ボス２５、２６の周囲に複数個の羽根２７、２８が放射状に設けられており、シャフト１６の回転によって回転しケーシング１０内に旋回する気流を生じさせる。なお、第一回転翼１１の羽根２７は、原料を旋回領域から粉砕領域へ導入しやすくするために、旋回のみでなく前方への推力も与える気流を生じさせる形状となっている。 The discharge side casing 15 has a tapered wall 22 whose diameter gradually decreases toward the front, and a discharge port 23 is opened at the front end. A suction fan is connected to the discharge port 23 via a suction pipe.
The first rotor blade 11 and the second rotor blade 12 are provided with a plurality of blades 27, 28 radially around the bosses 25, 26. The first rotor blade 11 and the second rotor blade 12 are rotated by the rotation of the shaft 16 and rotate in the casing 10. Cause it to occur. The blades 27 of the first rotary blade 11 have a shape that generates an air flow that not only swirls but also thrusts forward to facilitate introduction of the raw material from the swirl region to the pulverization region.

第二回転翼１２には、羽根２８の先端部に排出側ケーシング１５のテーパー壁２２に対向する傾斜面２９が設けられており、第二回転翼１２と排出側ケーシング１５との間およびその前方のテーパー壁２２に沿って分級領域が形成されている。
原料投入部１８から投入された原料は、原料供給口２１を通って投入側ケーシング１３の旋回領域内に入り、旋回領域で旋回する気流によって旋回し、遠心力により半径方向外側に向かう流れが与えられて、原料の密度は中心部が低く外周部が高くなる。また、吸引ファンによって排出口２３側へ吸引され、旋回領域と粉砕領域との間には差圧が生じる。 The second rotary blade 12 is provided with an inclined surface 29 facing the tapered wall 22 of the discharge side casing 15 at the tip of the blade 28, and between the second rotary blade 12 and the discharge side casing 15 and in front thereof. A classification region is formed along the tapered wall 22.
The raw material charged from the raw material charging unit 18 enters the swirl region of the charging casing 13 through the raw material supply port 21, swirls by the airflow swirling in the swirl region, and is given a flow outward in the radial direction by centrifugal force. Thus, the density of the raw material is low in the central portion and high in the outer peripheral portion. Moreover, it is attracted | sucked by the suction fan to the discharge port 23 side, and a differential pressure arises between a turning area | region and a grinding | pulverization area | region.

この差圧と第一回転翼１１で生じる気流の前方への推力によって、旋回領域内の原料はテーパー壁１９に沿って徐々に導入部から第一回転翼１１側に向かって移動する。旋回する原料の周速は原料供給口２１から第一回転翼１１側に向かって徐々に大きくなり、第一回転翼１１付近では周速は粉砕領域の周速と略等しくなる。
旋回する原料は、旋回領域である程度滞留したのち差圧により第一回転翼１１の羽根２７の間を通って粉砕領域に入り、気流によって旋回する。ここで原料は粒子径の大きなもの程大きい遠心力が作用して周速の速い半径方向外周側に集まり、主として粒子同士の摩砕により、また粒子同士の衝突による破砕も生じて粉砕される。 Due to the differential pressure and the forward thrust of the air flow generated by the first rotary blade 11, the raw material in the swirl region gradually moves from the introduction portion toward the first rotary blade 11 along the tapered wall 19. The peripheral speed of the turning raw material gradually increases from the raw material supply port 21 toward the first rotary blade 11, and the peripheral speed is substantially equal to the peripheral speed in the pulverization region in the vicinity of the first rotary blade 11.
The swirling raw material stays to some extent in the swirl region, then enters between the blades 27 of the first rotary blade 11 by the differential pressure, enters the pulverization region, and swirls by the airflow. Here, the larger the particle size, the larger the particle diameter, the larger the centrifugal force acts, and the material gathers on the outer peripheral side in the radial direction where the peripheral speed is faster, and is pulverized mainly by grinding of the particles.

また、粉砕された原料のなかで粒子径が小さく質量の小さい粒子ほど圧力の低い第二回転翼１２の回転中心近傍に集まり、吸引ファンで吸引されて排出口２３から空気とともに排出され後段の捕集手段により粉砕製品として捕集される。粒子径が大きく質量の大きい粒子は、吸引された空気に随伴せず、テーパー壁２２に沿った分級領域の外周部に生じる後方への戻り気流によって粉砕領域に戻る（例えば特許文献１参照）。   Further, among the pulverized raw materials, particles having a smaller particle diameter and smaller mass gather in the vicinity of the rotation center of the second rotor blade 12 having a lower pressure, and are sucked by a suction fan and discharged together with air from the discharge port 23. It is collected as a pulverized product by the collecting means. Particles having a large particle diameter and a large mass do not accompany the sucked air, and return to the pulverization region by a backward airflow generated at the outer periphery of the classification region along the tapered wall 22 (see, for example, Patent Document 1).

この気流式微粉砕機では、原料は、原料供給口２１を通って投入側ケーシング１３の旋回領域内に入り、旋回領域で旋回する気流によって旋回し、原料の分布は遠心力により投入側ケーシング１３の半径方向外周側が密になる。原料を前方へ移動させる推力は、第一回転翼１１から遠いため原料供給口２１では小さい。
このため、例えば、大豆のような油分を含有する原料を粉砕する場合には、図４に示すように、テーパー壁１９に開口した原料供給口２１の旋回気流と対向する側のエッジ部３０に粉砕半ばの原料Ｍｓ（以下、原料Ｍｓとする）が付着し堆積する現象が発生する。原料Ｍｓが堆積し成長すると、原料の供給が阻害され円滑に旋回気流を発生させることができなくなり、気流式微粉砕機は安定した破砕が行えない。
特開２０００−６１３４０号公報 In this airflow type pulverizer, the raw material passes through the raw material supply port 21 and enters the swirl region of the charging side casing 13, and is swirled by the airflow swirling in the swirling region. The outer peripheral side in the radial direction becomes dense. The thrust for moving the raw material forward is small at the raw material supply port 21 because it is far from the first rotor blade 11.
For this reason, for example, when pulverizing a raw material containing oil such as soybean, as shown in FIG. 4, the raw material supply port 21 opened in the tapered wall 19 has an edge portion 30 on the side facing the swirling airflow. A phenomenon occurs in which raw material Ms (hereinafter referred to as raw material Ms) in the middle of grinding adheres and accumulates. When the raw material Ms accumulates and grows, the supply of the raw material is hindered and a swirling airflow cannot be generated smoothly, and the airflow fine pulverizer cannot perform stable crushing.
JP 2000-61340 A

本発明は、従来の気流式微粉砕機における上記問題を解決するものであって、テーパー壁に開口した原料供給口の旋回気流と対向し原料が堆積する側のエッジ部（原料堆積側エッジ部）に粉砕半ばの原料が堆積し成長するのを防止する気流式微粉砕機の原料投入部を提供することを目的とする。   The present invention solves the above-mentioned problem in the conventional airflow type fine pulverizer, and is the edge portion on the side where the raw material is deposited facing the swirling airflow of the raw material supply port opened in the tapered wall (raw material deposition side edge portion) An object of the present invention is to provide a raw material charging unit for an airflow type fine pulverizer that prevents the raw material in the middle of pulverization from accumulating and growing.

本発明では、ケーシング内に第一回転翼と第二回転翼とを所定距離互いに離隔して設け、ケーシング内の第一回転翼の後方に旋回領域、第一回転翼と第二回転翼との間に粉砕領域を形成し、ケーシングに粉砕領域から前方に向けて径が漸減するテーパー壁を設け、第二回転翼にテーパー壁に対向する傾斜面を設けてテーパー壁と傾斜面との間に分級隙間を形成し、原料投入部から投入される原料を第一回転翼及び第二回転翼の回転で発生させる旋回気流により微粉砕する気流式微粉砕機において、原料投入部を前記ケーシングの旋回領域の後部に開口する原料供給口の原料堆積側エッジ部に向けて原料を投入するよう構成することにより上記課題を解決している。   In the present invention, the first rotor blade and the second rotor blade are provided in the casing so as to be separated from each other by a predetermined distance, and the swirl region, the first rotor blade and the second rotor blade are disposed behind the first rotor blade in the casing. A crushing region is formed in between, a taper wall whose diameter gradually decreases from the crushing region toward the front is provided in the casing, and an inclined surface facing the taper wall is provided in the second rotary blade, and the taper wall and the inclined surface are provided. In an airflow type fine pulverizer that forms a classification gap and finely pulverizes the raw material charged from the raw material charging portion with the swirling airflow generated by the rotation of the first rotary blade and the second rotary blade, the raw material charging portion is the swirl region of the casing The above-described problem is solved by configuring the raw material supply port to open toward the raw material deposition side edge portion of the raw material supply port.

本発明の気流式微粉砕機の原料投入部では、原料が原料供給口の原料堆積側エッジ部に向けて投入されるので、投入された原料が原料堆積側エッジ部に堆積した原料と衝突し、原料の堆積を破壊して成長を阻止することができる。
また、原料供給口の原料堆積側エッジ部を曲面とすることで、原料堆積側エッジ部へ原料が堆積し難くなり、原料の堆積の破壊がより容易になる。 In the raw material charging part of the airflow type fine pulverizer of the present invention, since the raw material is charged toward the raw material deposition side edge part of the raw material supply port, the charged raw material collides with the raw material deposited on the raw material deposition side edge part, The deposition of raw materials can be destroyed to prevent growth.
Further, by forming the material deposition side edge portion of the material supply port into a curved surface, it becomes difficult to deposit the material on the material deposition side edge portion, and the deposition of the material is more easily broken.

本発明の気流式微粉砕機の原料投入部では、原料堆積側エッジ部に堆積した原料を破壊して成長を阻止することができる。   In the raw material charging portion of the airflow type fine pulverizer of the present invention, the raw material deposited on the raw material deposition side edge portion can be destroyed to prevent growth.

図１は本発明の実施の形態を示す気流式微粉砕機の原料投入部の垂直断面図である。
気流式微粉砕機の構成は、基本的には図３に示すものと同様である。即ち、ケーシング１０が投入側ケーシング１３と、センターケーシング１４と排出側ケーシング１５とで構成されており、このケーシング１０の内部には、投入側ケーシング１３を貫通するシャフト１６の前端（図３上、左端）に、第一回転翼１１と第二回転翼１２とが所定距離互いに離隔した状態で取付けられている。シャフト１６はフレーム１７によりベアリング（図示略）を介して回転自在に支持されている。シャフト１６の後端にはモータ（図示略）が設けられ、シャフト１６に回転を与える。 FIG. 1 is a vertical sectional view of a raw material charging portion of an airflow type fine pulverizer showing an embodiment of the present invention.
The configuration of the airflow type fine pulverizer is basically the same as that shown in FIG. That is, the casing 10 is composed of a charging side casing 13, a center casing 14, and a discharging side casing 15. Inside the casing 10, the front end of the shaft 16 penetrating the charging side casing 13 (in FIG. At the left end), the first rotary blade 11 and the second rotary blade 12 are attached in a state of being separated from each other by a predetermined distance. The shaft 16 is rotatably supported by a frame 17 via a bearing (not shown). A motor (not shown) is provided at the rear end of the shaft 16 to rotate the shaft 16.

投入側ケーシング１３には、シャフト１６に対して垂直な方向に原料を投入する原料投入部１８が設けられている。また、センターケーシング１４の後端部から後方に向けて径が漸減するテーパー壁１９、テーパー壁１９の後端にシャフト１６に対して垂直な垂壁２０が設けられておりセンターケーシング１４の第一回転翼１１から投入側ケーシング１３の垂壁２０までの間に亙って旋回領域が形成されている。テーパー壁１９には原料供給口２１が開口しており、旋回領域の後部のテーパー状の部分が、原料を原料供給口２１から第一回転翼１１側へ円滑に導入するための導入部となっている。   The charging casing 13 is provided with a raw material charging portion 18 for charging the raw material in a direction perpendicular to the shaft 16. Further, a tapered wall 19 whose diameter gradually decreases rearward from the rear end portion of the center casing 14, and a vertical wall 20 perpendicular to the shaft 16 is provided at the rear end of the tapered wall 19. A swirl region is formed between the rotary blade 11 and the vertical wall 20 of the charging casing 13. A raw material supply port 21 is opened in the tapered wall 19, and a tapered portion at the rear of the swivel region serves as an introduction portion for smoothly introducing the raw material from the raw material supply port 21 to the first rotary blade 11. ing.

排出側ケーシング１５は、前方に向けて径が漸減するテーパー壁２２を有しており、前端部には排出口２３が開口している。この排出口２３には、吸引管を介して吸引ファンが接続される。
第一回転翼１１と第二回転翼１２は、ボス２５、２６の周囲に複数個の羽根２７、２８が放射状に設けられており、シャフト１６の回転によって回転しケーシング１０内に旋回する気流を生じさせる。なお、第一回転翼１１の羽根２７は、原料を旋回領域から粉砕領域へ導入しやすくするために、旋回のみでなく前方への推力も与える気流を生じさせる形状となっている。 The discharge side casing 15 has a tapered wall 22 whose diameter gradually decreases toward the front, and a discharge port 23 is opened at the front end. A suction fan is connected to the discharge port 23 via a suction pipe.
The first rotor blade 11 and the second rotor blade 12 are provided with a plurality of blades 27, 28 radially around the bosses 25, 26. The first rotor blade 11 and the second rotor blade 12 are rotated by the rotation of the shaft 16 and rotate in the casing 10. Cause it to occur. The blades 27 of the first rotary blade 11 have a shape that generates an air flow that not only swirls but also thrusts forward to facilitate introduction of the raw material from the swirl region to the pulverization region.

第二回転翼１２には、羽根２８の先端部に排出側ケーシング１５のテーパー壁２２に対向する傾斜面２９が設けられており、第二回転翼１２と排出側ケーシング１５との間およびその前方のテーパー壁２２に沿ってに分級領域が形成されている。
なお、原料供給口２１と第一回転翼１１の間や、第一回転翼１１と第二回転翼１２との間には、必要に応じて補助的な回転翼を設けることも可能である。
原料投入部１８から投入された原料は、原料供給口２１を通って投入側ケーシング１３の旋回領域内に入り、旋回領域で旋回する気流によって旋回し、遠心力により半径方向外側に向かう流れが与えられて、原料の密度は中心部が低く外周部が高くなる。また、吸引ファンによって排出口２３側へ吸引され、導入領域と旋回領域と粉砕領域との間には差圧が生じる。 The second rotary blade 12 is provided with an inclined surface 29 facing the tapered wall 22 of the discharge side casing 15 at the tip of the blade 28, and between the second rotary blade 12 and the discharge side casing 15 and in front thereof. A classification region is formed along the tapered wall 22.
In addition, it is also possible to provide an auxiliary rotor blade between the raw material supply port 21 and the first rotor blade 11 or between the first rotor blade 11 and the second rotor blade 12 as necessary.
The raw material charged from the raw material charging unit 18 enters the swirl region of the charging casing 13 through the raw material supply port 21, swirls by the airflow swirling in the swirl region, and is given a flow outward in the radial direction by centrifugal force. Thus, the density of the raw material is low in the central portion and high in the outer peripheral portion. Moreover, it is attracted | sucked to the discharge port 23 side with a suction fan, and a differential pressure arises between an introduction area | region, a turning area | region, and a grinding | pulverization area | region.

この差圧と第一回転翼１１で生じる気流の前方への推力によって、旋回領域内の原料はテーパー壁１９に沿って徐々に導入部から第一回転翼１１側に向かって移動する。旋回する原料の周速は原料投入口２１から第一回転翼１１側に向かって徐々に大きくなり、第一回転翼１１付近では周速は粉砕領域の周速と略等しくなる。
旋回する原料は、旋回領域である程度滞留したのち差圧により第一回転翼１１の羽根２７の間を通って粉砕領域に入り、気流によって旋回する。ここで原料は粒子径の大きなもの程大きい遠心力が作用して周速の速い半径方向外周側に集まり、主として粒子同士の摩砕により、また粒子同士の衝突による破砕も生じて粉砕される。 Due to the differential pressure and the forward thrust of the air flow generated by the first rotary blade 11, the raw material in the swirl region gradually moves from the introduction portion toward the first rotary blade 11 along the tapered wall 19. The peripheral speed of the revolving raw material gradually increases from the raw material inlet 21 toward the first rotary blade 11, and the peripheral speed is substantially equal to the peripheral speed in the grinding region near the first rotary blade 11.
The swirling raw material stays to some extent in the swirl region, then enters between the blades 27 of the first rotary blade 11 by the differential pressure, enters the pulverization region, and swirls by the airflow. Here, the larger the particle size, the larger the particle diameter, the larger the centrifugal force acts, and the material gathers on the outer peripheral side in the radial direction where the peripheral speed is faster, and is pulverized mainly by grinding of the particles.

このとき、第二回転翼１２は、粉砕領域の原料の分級領域への移動をブロックする。このブロック作用は、第二回転翼１２の表面に形成される気流のカーテンによって発生するので、粉砕は粒子同士の同体粉砕作用によって行われ、原料に熱変性は生じない。
また、粉砕された原料のなかで粒子径が小さく質量の小さい粒子ほど圧力の低い第二回転翼１２の回転中心近傍に集まり、吸引ファンで吸引されて排出口２３から空気とともに排出され後段の捕集手段により粉砕製品として捕集される。粒子径が大きく質量の大きい粒子は、吸引された空気に随伴せず、テーパー壁２２に沿った分級領域の外周部に生じる後方への戻り気流によって粉砕領域に戻る。 At this time, the 2nd rotary blade 12 blocks the movement to the classification area | region of the raw material of a grinding | pulverization area | region. Since this blocking action is generated by the curtain of airflow formed on the surface of the second rotary blade 12, the pulverization is carried out by the simultaneous pulverization action of the particles, and the raw material is not thermally denatured.
Further, among the pulverized raw materials, particles having a smaller particle diameter and smaller mass gather near the rotation center of the second rotary blade 12 having a lower pressure, and are sucked by a suction fan and discharged together with air from the discharge port 23, and are collected later. It is collected as a pulverized product by the collecting means. Particles having a large particle size and a large mass do not accompany the sucked air, and return to the pulverization region by a backward return airflow generated at the outer periphery of the classification region along the tapered wall 22.

ここで、テーパー壁１９に開口した原料供給口２１は、図１に示すように、図上時計方向に旋回する旋回気流と対向する図上右側のエッジ部が原料堆積側エッジ部３１となっており、原料投入部１８の上端には、その全幅より幅を狭くした原料投入口３２が原料供給口２１の原料堆積側エッジ部３１の真上付近に位置するよう右側に偏倚して設けられている。原料投入部１８の上端の原料投入口３２以外の部分には、空気を吸入するためのメッシュ３５が設けられている。   Here, as shown in FIG. 1, the raw material supply port 21 opened in the tapered wall 19 has a raw material deposition side edge portion 31 on the right side of the drawing facing the swirling airflow swirling clockwise in the drawing. At the upper end of the raw material charging portion 18, a raw material charging port 32 having a width narrower than the entire width is provided so as to be biased to the right so as to be positioned near the raw material deposition side edge portion 31 of the raw material supply port 21. Yes. A mesh 35 for inhaling air is provided at a portion other than the material inlet 32 at the upper end of the material inlet 18.

このように、原料投入口３２が原料堆積側エッジ部３１の真上付近に位置しているため、原料投入口３２から投入される原料Ｍは、原料堆積側エッジ部３１に向けて投入され、投入された原料Ｍが原料堆積側エッジ部３１に堆積した粉砕半ばの原料Ｍｓ（以下、原料Ｍｓとする）と衝突し、原料Ｍｓの堆積を破壊して成長を阻止することができる。
原料投入部１８の上端の原料投入口３２以外の部分はメッシュ構造となっているため、原料投入口３２の幅が狭くても、ケーシング１０内部の気流の形成に十分な量の空気を吸入することが可能であり、ケーシング１０内部が吸引ファンによって極度の負圧状態となって良好な気流の発生が阻害されることがない。 As described above, since the raw material input port 32 is located near the raw material deposition side edge portion 31, the raw material M input from the raw material input port 32 is input toward the raw material deposition side edge portion 31, The charged raw material M collides with the pulverized raw material Ms deposited on the raw material deposition side edge portion 31 (hereinafter referred to as raw material Ms), and the deposition of the raw material Ms can be destroyed to prevent growth.
Since the portion other than the raw material inlet 32 at the upper end of the raw material inlet 18 has a mesh structure, even if the width of the raw material inlet 32 is narrow, a sufficient amount of air is sucked to form an airflow inside the casing 10. It is possible that the inside of the casing 10 is in an extremely negative pressure state by the suction fan, and generation of a good airflow is not hindered.

このため、大豆のような油分を含有する原料を粉砕する場合でも、原料Ｍｓが堆積し成長することはなく、原料Ｍを常に適切に供給し、円滑に旋回気流を発生させることができる。従って、気流式微粉砕機による破砕を安定して行うことが可能となる。
また、図２に示すように、原料供給口２１の原料堆積側エッジ部３１を曲面とすると、原料堆積側エッジ部３１には原料Ｍｓが堆積し難くなり、原料Ｍｓの堆積の破壊がより容易になる。 For this reason, even when pulverizing a raw material containing oil such as soybean, the raw material Ms does not accumulate and grow, and the raw material M can always be supplied appropriately and a swirling airflow can be generated smoothly. Therefore, it is possible to stably perform crushing by the airflow type pulverizer.
As shown in FIG. 2, if the material deposition side edge portion 31 of the material supply port 21 is curved, the material Ms is difficult to deposit on the material deposition side edge portion 31, and the deposition of the material Ms is more easily destroyed. become.

本発明の実施の形態を示す気流式微粉砕機の原料投入部の横断面図である。It is a cross-sectional view of the raw material injection | throwing-in part of the airflow type fine pulverizer which shows embodiment of this invention. 原料堆積側エッジ部を曲面とした例を示す気流式微粉砕機の原料投入部の横断面図である。It is a cross-sectional view of the raw material input part of the airflow type fine pulverizer showing an example in which the raw material deposition side edge part is a curved surface. 従来の気流式微粉砕機の構成を示す縦断面図である。It is a longitudinal cross-sectional view which shows the structure of the conventional airflow type fine pulverizer. 従来の気流式微粉砕機の原料投入部の構成を示す図３のＡ−Ａ線横断面図である。It is the AA line cross-sectional view of FIG. 3 which shows the structure of the raw material injection | throwing-in part of the conventional airflow type | mold fine crusher.

符号の説明Explanation of symbols

１０ ケーシング
１１ 第一回転翼
１２ 第二回転翼
１３ 投入側ケーシング
１４ センターケーシング
１５ 排出側ケーシング
１６ シャフト
１７ フレーム
１８ 原料投入部
１９ テーパー壁
２０ 垂壁
２１ 原料供給口
２２ テーパー壁
２３ 排出口
２５、２６ ボス
２７、２８ 羽根
２９ 傾斜面
３１ 原料堆積側エッジ部
３２ 原料投入口
３５ メッシュ
Ｍ 原料
Ｍｓ 原料 DESCRIPTION OF SYMBOLS 10 Casing 11 1st rotary blade 12 2nd rotary blade 13 Input side casing 14 Center casing 15 Discharge side casing 16 Shaft 17 Frame 18 Raw material input part 19 Tapered wall 20 Hanging wall 21 Raw material supply port 22 Taper wall 23 Discharge port 25, 26 Boss 27, 28 Blade 29 Inclined surface 31 Raw material deposition side edge 32 Raw material inlet 35 Mesh M Raw material Ms Raw material

Claims (2)

ケーシング内に第一回転翼と第二回転翼とを所定距離互いに離隔して設け、ケーシング内の第一回転翼の後方に旋回領域、第一回転翼と第二回転翼との間に粉砕領域を形成し、ケーシングに粉砕領域から前方に向けて径が漸減するテーパー壁を設け、第二回転翼にテーパー壁に対向する傾斜面を設けてテーパー壁と傾斜面との間に分級隙間を形成し、原料投入部から投入される原料を第一回転翼及び第二回転翼の回転で発生させる旋回気流により微粉砕する気流式微粉砕機において、
前記ケーシングの旋回領域の後部に開口する原料供給口の原料堆積側エッジ部に向けて原料を投入するよう構成したことを特徴とする気流式微粉砕機の原料投入部。 The first rotor blade and the second rotor blade are provided in the casing so as to be separated from each other by a predetermined distance, the swirl region is located behind the first rotor blade in the casing, and the pulverization region is between the first rotor blade and the second rotor blade. A tapered wall whose diameter gradually decreases from the pulverization region to the front of the casing, and an inclined surface facing the tapered wall is provided on the second rotor blade to form a classification gap between the tapered wall and the inclined surface. In the airflow type fine pulverizer for finely pulverizing the raw material charged from the raw material charging part by the swirling airflow generated by the rotation of the first rotary blade and the second rotary blade,
Material injection portion of the airflow mill, characterized by being configured so as to inject the raw material toward the source depositing side edge portion of the raw material supply port opening edge at the back of the pivoting region of the casing. 原料供給口の原料堆積側エッジ部を曲面とした請求項１記載の気流式微粉砕機の原料投入部。   The raw material charging part of the airflow type fine pulverizer according to claim 1, wherein the raw material supply side edge portion of the raw material supply port has a curved surface.
JP2003405634A 2003-12-04 2003-12-04 Raw material input section of airflow type fine pulverizer Expired - Fee Related JP4372525B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007268457A (en) * 2006-03-31 2007-10-18 Furukawa Industrial Machinery Systems Co Ltd Air stream type crusher and operation method for air stream type crusher
JP2008012477A (en) * 2006-07-07 2008-01-24 Furukawa Industrial Machinery Systems Co Ltd Pneumatic pulverizer and method for recovering residue in its casing
CN117258929A (en) * 2023-11-21 2023-12-22 威顿水泥集团有限责任公司 Feed arrangement that cement manufacture used

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103358422B (en) * 2012-04-10 2015-07-22 广州爱其科技股份有限公司 Fine rubber powder processing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007268457A (en) * 2006-03-31 2007-10-18 Furukawa Industrial Machinery Systems Co Ltd Air stream type crusher and operation method for air stream type crusher
JP2008012477A (en) * 2006-07-07 2008-01-24 Furukawa Industrial Machinery Systems Co Ltd Pneumatic pulverizer and method for recovering residue in its casing
CN117258929A (en) * 2023-11-21 2023-12-22 威顿水泥集团有限责任公司 Feed arrangement that cement manufacture used
CN117258929B (en) * 2023-11-21 2024-01-30 威顿水泥集团有限责任公司 Feed arrangement that cement manufacture used

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