JP2009256026A - Powder and grain feeder - Google Patents

Powder and grain feeder Download PDF

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Publication number
JP2009256026A
JP2009256026A JP2008105641A JP2008105641A JP2009256026A JP 2009256026 A JP2009256026 A JP 2009256026A JP 2008105641 A JP2008105641 A JP 2008105641A JP 2008105641 A JP2008105641 A JP 2008105641A JP 2009256026 A JP2009256026 A JP 2009256026A
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powder
inner cylinder
rotation
bottom plate
granular material
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JP4447643B2 (en
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Osamu Yoshikawa
修 吉川
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YOSHIKAWA KK
Yoshikawa Corp
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YOSHIKAWA KK
Yoshikawa Corp
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Priority to KR1020080118860A priority patent/KR101409595B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices
    • B65G65/40—Devices for emptying otherwise than from the top
    • B65G65/48—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems
    • B65G65/4809—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis
    • B65G65/4836—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis and moving material over a stationary surface, e.g. sweep arms or wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G11/00—Chutes
    • B65G11/12—Chutes pivotable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices
    • B65G65/40—Devices for emptying otherwise than from the top
    • B65G65/48—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems
    • B65G65/4809—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis
    • B65G65/4818—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis and having the form of rotating tables or pans
    • B65G65/4827—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis and having the form of rotating tables or pans with particular surface features, e.g. ribs, roughening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2812/00—Indexing codes relating to the kind or type of conveyors
    • B65G2812/02—Belt or chain conveyors
    • B65G2812/02267—Conveyors having endless traction elements
    • B65G2812/02861—Conveyors having endless traction elements moving the materials over supporting surfaces by impeller means, e.g. scrapers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a powder and grain feeder preventing co-rotation of material, and discharging a fixed quantity of the material without segregation of the material. <P>SOLUTION: In the powder and grain feeder, an outer tube is raised on a bottom plate to form a powder and grain feeding case, an inner tube is disposed above the bottom plate and is supported through a powder and grain discharging clearance, a plurality of spokes positioned on the bottom plate are disposed to a rotational shaft of the bottom plate, a tubular outer edge of a rotor is set close to an inner periphery of the outer tube to form an annular passage, a plurality of scrapers for transfer in a direction of the annular passage are disposed to the tubular outer edge, the powder and grain dispersed from the powder and grain discharge clearance to the annular passage are transferred to a powder and grain discharge port by the scrapers. A plurality of projections for preventing rotation along with the steering blade are disposed to an inner surface of the inner tube, and each projection has an approximately triangle pole shape with two face projected in a center direction of the inner tube. An angle made by the two faces of the projection is obtuse, and the maximum length of the projection is 2%-3% of a radius of the inner tube. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は原料の供回りを防止する機能を有する粉粒体供給機に関するものである。   The present invention relates to a granular material supply machine having a function of preventing the rotation of raw materials.

従来、粉粒体の供給される内筒と外筒を有し、内筒と外筒間に材料の環状通路を設け、外筒底面上で回転する攪拌翼により材料を攪拌しながら、材料通路上に設けた排出口より粉粒体を排出する粉粒体供給機が存在する。   Conventionally, a material passage has an inner cylinder and an outer cylinder to which powder particles are supplied, an annular passage of material is provided between the inner cylinder and the outer cylinder, and the material is stirred by a stirring blade that rotates on the bottom surface of the outer cylinder. There is a powder feeder that discharges powder from a discharge port provided above.

かかる供給機では、上記外筒底面上で回転する攪拌翼により、内筒外の材料通路に所定の安息角にて拡がった粉粒体を上記排出口まで運搬して定量排出を可能とするものである（特許文献１）。   In such a feeder, the granular material spread at a predetermined angle of repose to the material passage outside the inner cylinder is conveyed to the discharge port by the stirring blade rotating on the bottom surface of the outer cylinder, thereby enabling quantitative discharge. (Patent Document 1).

実開平６−３５２３５号Utility Kaihei 6-35235

ところで、上記従来の粉粒体供給機は、ホッパー（内筒）内の粉粒体原料が少なくなった場合、粉粒体の物性によっては粉粒体と粉粒体が接触している壁面（底面、内筒内面等）との摩擦抵抗が、攪拌翼による攪拌力より小さくなり、内筒内において粉粒体全体が攪拌翼と共に回転する現象、いわゆる供回りが発生する場合がある。   By the way, the above-mentioned conventional granular material supply machine, when the granular material raw material in the hopper (inner cylinder) decreases, depending on the physical properties of the granular material, the wall surface ( The friction resistance with the bottom surface, the inner surface of the inner cylinder, etc.) is smaller than the stirring force by the stirring blade, and a phenomenon in which the entire granular material rotates with the stirring blade in the inner cylinder, so-called rotation may occur.

この供回り現象が発生すると、内筒内の粉粒体を材料通路へ誘導する力が無くなり、材料を排出口から機外へ排出することができなくなる。   When this phenomenon occurs, there is no force to guide the granular material in the inner cylinder to the material passage, and the material cannot be discharged from the discharge port to the outside of the machine.

この粉粒体の供回り防止対策として、従来、内筒の内面の対向位置に突起（邪魔板）３０を２か所に設け（図１１参照）、この邪魔板により供回りする粉粒体に抵抗を与え、供回りを阻止することが提案されている（図１１、特許文献１、図５参照）。   As a measure for preventing the rotation of the granular material, conventionally, protrusions (baffle plates) 30 are provided at two positions opposite to the inner surface of the inner cylinder (see FIG. 11). It has been proposed to provide resistance and prevent rotation (see FIG. 11, Patent Document 1, and FIG. 5).

ところが上記邪魔板３０は、内筒内面２ａより邪魔板の左右板面が大きく内部に突出する形状であるため（図１１参照）、供回りを阻止して粉粒体を材料通路へ誘導する効果は大きいが、攪拌翼の回転方向Ａに対して対向面３０ａが大きな傾斜角度を以って交差するため、供回りする粉粒体が対向面３０ａに衝突することにより粉粒体に大きな圧力が作用し、邪魔板３０近傍の粉粒体に粗密を生ずる場合があった。そしてこれは、内筒２内の対向２箇所でのみ生ずるため、粉粒体材料が、物性の異なる混合材料の場合は、偏析（材料の物理的性質の違いによる成分の偏在）が生ずる可能性がある。   However, since the baffle plate 30 has a shape in which the left and right plate surfaces of the baffle plate protrude larger inward than the inner cylinder inner surface 2a (see FIG. 11), the effect of preventing the rotation and guiding the granular material to the material passage. However, since the opposing surface 30a intersects with the rotation direction A of the stirring blade with a large inclination angle, a large pressure is applied to the granular material by the colliding granular material colliding with the opposing surface 30a. In some cases, the powder particles in the vicinity of the baffle plate 30 become dense and dense. And since this occurs only at two opposing locations in the inner cylinder 2, if the powder material is a mixed material having different physical properties, segregation (the uneven distribution of components due to the difference in physical properties of the material) may occur. There is.

本発明は、上記従来の課題に鑑みてなされたものであり、ホッパー内の材料の供回りを防止すると共に、材料の偏析を生ずることなく定量排出することのできる粉粒体供給機を提供することを目的とする。   The present invention has been made in view of the above-described conventional problems, and provides a powder and particle feeder that can prevent the material from circulating in the hopper and can quantitatively discharge the material without causing segregation of the material. For the purpose.

上記の目的を達成するため本発明は、
第１に、底板に外筒を立設して粉粒体供給ケースとし、上記底板の上方に粉粒体排出間隙を介して内筒を同心に支持し、上記底板の中心に直立回転軸を設け、該回転軸に上記底板上に位置する複数のスポークを設けて回転体を形成し、該回転体の筒状外縁を外筒の内周に近接して内外筒間の環状通路を形成し、上記筒状外縁に上記環状通路方向の材料移送用スクレーパを複数設け、上記粉粒体排出間隙から所定の安息角にて上記環状通路に拡散した粉粒体を上記スクレーパにより粉粒体排出口に移送する粉粒体供給機において、上記内筒の内面に、その内周に沿う均等間隔毎に、内筒中心方向に突出する二面を有する縦方向の略三角柱形状の複数の供回り防止突起を設け、上記各供回り防止突起の上記二面のなす角度が鈍角であり、かつ上記供回り防止突起の最大高さが、内筒の半径に対して２％〜３％であることを特徴とする粉粒体供給機により構成されるものである。 In order to achieve the above object, the present invention
First, an outer cylinder is erected on the bottom plate to form a powder supply case, and the inner cylinder is concentrically supported above the bottom plate via a powder discharge gap, and an upright rotating shaft is provided at the center of the bottom plate. A rotating body is formed by providing a plurality of spokes located on the bottom plate on the rotating shaft, and an annular passage between the inner and outer cylinders is formed by bringing the cylindrical outer edge of the rotating body close to the inner periphery of the outer cylinder. The cylindrical outer edge is provided with a plurality of scrapers for material transfer in the annular passage direction, and the granular material diffused into the annular passage at a predetermined angle of repose from the granular material discharge gap is discharged into the granular material by the scraper. In the granular material feeder for transferring to the inner surface of the inner cylinder, a plurality of rotation preventions having a substantially triangular prism shape in the vertical direction having two surfaces protruding in the center direction of the inner cylinder at equal intervals along the inner circumference of the inner cylinder Protrusions are provided, and the angle formed by the two surfaces of the anti-rotation protrusions is an obtuse angle, and Maximum height around prevention protrusion, is formed using the granular material feeder, which is a 2% to 3% with respect to the radius of the inner cylinder.

供回り防止突起の二面は例えば供回り防止突起（１０）の突出面（１０ａ，１０ｂ）により構成することができる。縦方向とは攪拌翼の回転方向に直交する方向をいう。このように構成すると、供回り防止突起の二面の傾斜が攪拌翼の回転方向に対して小さな角度で交差する緩やかな傾斜面となり、またその最大高さも低いため、１つの供回り防止突起により粉粒体に与えられる圧力を小さくすることができ、その結果、内筒の内周に沿って粉粒体に与える圧力を均等に分散することができ、粉粒体の供回りを防止することができると共に、材料の偏析をも防止することができる。   The two surfaces of the anti-rotation projection can be constituted by, for example, projecting surfaces (10a, 10b) of the anti-rotation projection (10). The longitudinal direction means a direction orthogonal to the rotation direction of the stirring blade. If comprised in this way, the inclination of two surfaces of a rotation prevention protrusion will become a gentle inclined surface which cross | intersects at a small angle with respect to the rotation direction of a stirring blade, and since the maximum height is also low, one rotation prevention protrusion is The pressure applied to the powder can be reduced, and as a result, the pressure applied to the powder can be evenly distributed along the inner circumference of the inner cylinder, preventing the powder from being rotated. And segregation of the material can be prevented.

第２に、底板に外筒を立設して粉粒体供給ケースとし、上記底板の上方に粉粒体排出間隙を介して内筒を同心に支持し、上記底板の中心に直立回転軸を設け、該回転軸に上記底板上に位置する複数のスポークを設けて回転体を形成し、該回転体の筒状外縁を外筒の内周に近接して内外筒間の環状通路を形成し、上記筒状外縁に上記環状通路方向の材料移送用スクレーパを複数設け、上記粉粒体排出間隙から所定の安息角にて上記環状通路に拡散した粉粒体を上記スクレーパにより粉粒体排出口に移送する粉粒体供給機において、上記内筒の内面に、その内周に沿う均等間隔毎に、内筒中心方向に突出する円弧面を有する縦方向の柱状の複数の供回り防止突起を設け、かつ上記供回り防止突起の最大高さが、内筒の半径に対して２％〜３％であることを特徴とする粉粒体供給機により構成される。   Second, an outer cylinder is erected on the bottom plate to form a powder supply case, and the inner cylinder is concentrically supported above the bottom plate via a powder discharge gap, and an upright rotating shaft is provided at the center of the bottom plate. A rotating body is formed by providing a plurality of spokes located on the bottom plate on the rotating shaft, and an annular passage between the inner and outer cylinders is formed by bringing the cylindrical outer edge of the rotating body close to the inner periphery of the outer cylinder. The cylindrical outer edge is provided with a plurality of scrapers for material transfer in the annular passage direction, and the granular material diffused into the annular passage at a predetermined angle of repose from the granular material discharge gap is discharged into the granular material by the scraper. A plurality of vertical columnar anti-rotation protrusions having an arc surface protruding in the center direction of the inner cylinder on the inner surface of the inner cylinder at equal intervals along the inner circumference thereof. And the maximum height of the anti-rotation protrusion is 2% to 3% with respect to the radius of the inner cylinder. It constituted by granular material feeder according to claim.

このように構成すると、供回り防止突起の円弧面が攪拌翼の回転方向に対して小さな角度で交差する緩やかな傾斜面（曲面）となり、またその最大高さも低いため、１つの供回り防止突起により粉粒体に与えられる圧力を小さくすることができ、その結果、内筒の内周に沿って粉粒体に与える圧力を均等に分散することができ、粉粒体の供回りを防止することができると共に、材料の偏析をも防止することができる。また、円弧面であるため粉粒体の急激な乱れを抑制して材料の偏析を効果的に抑制し得る。   If comprised in this way, since the circular arc surface of a rotation prevention protrusion will become a gentle inclined surface (curved surface) which cross | intersects at a small angle with respect to the rotation direction of a stirring blade, and the maximum height is also low, one rotation prevention protrusion Can reduce the pressure applied to the granular material, and as a result, the pressure applied to the granular material can be evenly distributed along the inner periphery of the inner cylinder, thereby preventing the granular material from rotating. And segregation of the material can be prevented. Moreover, since it is a circular arc surface, the rapid disturbance of a granular material can be suppressed and segregation of a material can be suppressed effectively.

第３に、上記供回り防止突起の円弧面に代えて、内筒中心方向に突出する曲面としたものであることを特徴とする上記第２記載の粉粒体供給機により構成される。   Thirdly, instead of the circular arc surface of the anti-rotation protrusion, a curved body projecting toward the center of the inner cylinder is used.

上記曲面とは、筒状の面が円弧面以外の縦方向曲面をいい、湾曲面等を含む概念である。   The curved surface is a concept in which a cylindrical surface is a longitudinal curved surface other than a circular arc surface and includes a curved surface.

第４に、上記各供回り防止突起は、上記内筒の下端から内筒上端方向の所定範囲に設けられているものであることを特徴とする上記第１〜３の何れかに記載の粉粒体供給機により構成される。   4thly, each said rotation prevention protrusion is provided in the predetermined range of the inner cylinder upper end direction from the lower end of the said inner cylinder, The powder in any one of said 1st-3rd characterized by the above-mentioned. Consists of a granule feeder.

このように構成すると、供回りが生じやすい粉粒体の減少時に、当該粉粒体に効果的に圧力を作用させることができる。   If comprised in this way, a pressure can be effectively made to act on the said granular material at the time of the reduction | decrease of the granular material which a rotation tends to produce.

第５に、上記供回り防止突起は、内筒の内周に沿って均等間隔で６個又は８個設けられているものであることを特徴とする上記第１〜４の何れかに記載の粉粒体供給機により構成される。   Fifthly, six or eight of the rotation prevention protrusions are provided at equal intervals along the inner periphery of the inner cylinder. Consists of a powder feeder.

このように構成すると、供回り防止のために粉粒体に与える圧力を内筒の内周に沿って均等に分散することができ、供回りを効果的に防止し得ると共に偏析をも防止し得る。   If comprised in this way, the pressure given to a granular material for rotation prevention can be disperse | distributed equally along the inner periphery of an inner cylinder, and rotation can be prevented effectively and segregation can also be prevented. obtain.

本発明は上述のように構成したので、供回り防止突起による粉粒体の供回りを防止するための抵抗が内筒内周全体に略均一に分散されるため、粉粒体の供回りを効果的に防止することができると共に、材料の乱れが少ないため材料の偏析をも防止することができ、安定した材料の定量排出を可能とするものである。   Since the present invention is configured as described above, the resistance for preventing the granular material from being rotated by the anti-rotation protrusion is distributed substantially uniformly throughout the inner periphery of the inner cylinder. In addition to being able to effectively prevent the material from being disturbed, segregation of the material can also be prevented, and stable quantitative discharge of the material is enabled.

以下、添付図面に従って、本発明に係る粉粒体供給機の実施形態を詳細に説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a powder and particle feeder according to the present invention will be described in detail with reference to the accompanying drawings.

まず、本発明に係る粉粒体供給機の基本的構成について図１、図２に基づいて説明する。図１、図２に示すように、底板１’を有する外筒１（有底外筒）の内部に同心円の内筒２を配置し、内筒２の下端２’と底板１’との間に粉粒体の排出間隙ｔを介在させた状態で内筒２の外周に設けた環状蓋３を外筒１の上端に支持することによって外筒１の環状上端開口部１”を閉鎖し、かつ上記間隙ｔを保持し、内外筒１，２間に排出粉粒体の環状通路４を形成し、該通路４に排出口５を穿設する。   First, the basic configuration of the powder and particle feeder according to the present invention will be described with reference to FIGS. 1 and 2. As shown in FIGS. 1 and 2, a concentric inner cylinder 2 is arranged inside an outer cylinder 1 (bottomed outer cylinder) having a bottom plate 1 ′, and between the lower end 2 ′ of the inner cylinder 2 and the bottom plate 1 ′. The annular upper end opening 1 ″ of the outer cylinder 1 is closed by supporting the annular lid 3 provided on the outer periphery of the inner cylinder 2 with the discharge gap t of the granular material interposed therebetween at the upper end of the outer cylinder 1, Further, the gap t is maintained, an annular passage 4 of discharged powder particles is formed between the inner and outer cylinders 1 and 2, and a discharge port 5 is formed in the passage 4.

そして上記底板１’の中心に突設した直立回転軸６の上端部に底板上面１ａに沿って配置された回転羽根（攪拌翼）７の基部７ｂを固定して粉粒体フィーダＦを形成し、上記有底外筒１を粉粒体供給ケースとするものである。   And the base part 7b of the rotary blade (stirring blade) 7 arrange | positioned along the bottom-plate upper surface 1a is fixed to the upper end part of the upright rotating shaft 6 protrudingly provided in the center of the said baseplate 1 ', and the granular material feeder F is formed. The bottomed outer cylinder 1 is used as a granular material supply case.

上記回転羽根７は、図１に示すように、その基部７ｂから外筒１内周に向けて９０度毎の４本のスポーク７ａにより構成されており、その先端部には外筒１の内周に沿う回転リング（筒状外縁）８が設けられている。この回転リング８には上記スポーク７ａと同一高さにおいて内筒２方向に向けて１２本の材料移送用スクレーパ（内向回転羽根）９が設けられている。   As shown in FIG. 1, the rotary blade 7 is composed of four spokes 7a every 90 degrees from the base portion 7b toward the inner periphery of the outer tube 1, and at the tip thereof, the inner portion of the outer tube 1 is formed. A rotating ring (cylindrical outer edge) 8 is provided along the circumference. The rotating ring 8 is provided with 12 material transfer scrapers (inward rotating blades) 9 in the direction of the inner cylinder 2 at the same height as the spokes 7a.

上記粉粒体Ｐは上記内筒２内に収容されており、上記間隔ｔから環状通路４に向けて所定の安息角ｑを以って環状通路４側に広がり、かかる状態で上記直立回転軸６を矢印Ａ方向に駆動することにより、上記粉粒体Ｐ内で上記スポーク７ａ及びスクレーパ９が矢印Ａ方向に回転し、これにより上記内筒２内の粉粒体Ｐが環状通路４側に掻き出され、掻き出された粉粒体は上記スクレーパ９により環状通路４内を矢印Ａ方向に移動し、排出口５から外部に一定量ずつ排出される。   The granular material P is accommodated in the inner cylinder 2 and spreads toward the annular passage 4 from the interval t toward the annular passage 4 with a predetermined angle of repose q. In this state, the upright rotating shaft 6 is driven in the direction of arrow A, the spokes 7a and the scraper 9 are rotated in the direction of arrow A in the granular material P, whereby the granular material P in the inner cylinder 2 is moved to the annular passage 4 side. The scraped powder particles are moved in the direction of the arrow A by the scraper 9 and discharged from the discharge port 5 to the outside by a fixed amount.

上記回転羽根７の各スポーク７ａは、その回転により粉粒体を外周部（環状通路４）側に半強制的に送り出す作用を行う。７ａ’は、上記各スポーク７ａの回転方向Ａ側（進行方向側）の縁部（エッジ）であり、その回転方向（進行方向）Ａに沿って縁部７ａ’方向にその厚みを減少させたテーパ面を形成している。   The spokes 7a of the rotary blade 7 perform the action of forcibly sending the powder particles to the outer peripheral portion (annular passage 4) side by the rotation. Reference numeral 7a ′ denotes an edge (edge) on the rotation direction A side (traveling direction side) of each spoke 7a, and its thickness is reduced in the direction of the edge 7a ′ along the rotation direction (traveling direction) A. A tapered surface is formed.

１０は、上記内筒２の内面に設けられた供回り防止突起であり、これら供回り防止突起１０は、上記内筒２の内面２ａにおいて、その内周に沿う均等間隔毎（図１では６０度毎）に６箇所に設けられている（図７参照）。   Reference numeral 10 denotes a rotation prevention protrusion provided on the inner surface of the inner cylinder 2, and these rotation prevention protrusions 10 are arranged at equal intervals along the inner circumference (60 in FIG. 1) on the inner surface 2 a of the inner cylinder 2. Are provided at six locations (see FIG. 7).

これらの供回り防止突起１０は同一形状なので、その１つに着目すると、図４に示すように、当該供回り防止突起１０は、内筒２の内面２ａにおいて内筒半径上の仮想線Ｒに直交する鉛直中心線Ｓの方向に、左右方向から緩やかな同一傾斜角度で立ち上がる２つの突出面１０ａ，１０ｂを有している。この供回り防止突起１０の上面１０ｃと底面１０ｃ’は何れも閉鎖されており、全体として上記中心線Ｓを内筒２の中心に向けた縦方向（回転翼７の回転方向Ａに直交する縦方向）の略三角柱形状をなしている。そして、上記突出面１０ａ，１０ｂは、上記内筒の上端２”から下端２’に至る長さを有しており、その横断面形状は頂点のなす角度θ１が約１４０度（鈍角）の略二等辺三角形状をなしている（図９（ａ）参照）。 Since these rotation prevention protrusions 10 have the same shape, focusing on one of them, as shown in FIG. 4, the rotation prevention protrusions 10 are arranged on a virtual line R on the inner cylinder radius on the inner surface 2 a of the inner cylinder 2. In the direction of the perpendicular vertical center line S, there are two projecting surfaces 10a and 10b that rise from the left and right directions at the same gentle inclination angle. Both the upper surface 10c and the bottom surface 10c ′ of the rotation preventing projection 10 are closed, and as a whole, the vertical direction (the vertical direction perpendicular to the rotational direction A of the rotary blade 7) with the center line S directed toward the center of the inner cylinder 2 is used. Direction). The projecting surfaces 10a and 10b have a length from the upper end 2 ″ to the lower end 2 ′ of the inner cylinder, and the cross-sectional shape thereof is such that the angle θ 1 formed by the apex is about 140 degrees (obtuse angle). It has a substantially isosceles triangle shape (see FIG. 9A).

即ち、上記内筒２の内周には、その内筒中心方向に突出する縦方向の突出面（二面）１０ａ，１０ｂを有する縦方向の略三角柱形状の複数の供回り防止突起１０が設けられており、上記各供回り防止突起１０の上記突出面１０ａ，１０ｂのなす角度θ１は鈍角となるように構成されている。 That is, on the inner periphery of the inner cylinder 2, there are provided a plurality of rotation prevention projections 10 having a substantially triangular prism shape in the vertical direction and having vertical projecting surfaces (two surfaces) 10a and 10b projecting in the center direction of the inner cylinder. is and, the protruding surface 10a, the angle theta 1 of 10b of the respective co-rotation preventing projection 10 is configured to be obtuse.

また、この供回り防止突起１０の突出面１０ａ，１０ｂは、図９（ａ）に示すように、回転羽根７の回転方向（Ａ方向、回転方向の接線ｍ）に対して小さな角度（図のθ２＝約２０度）で交差する緩やかな傾斜を有するように構成されており、これにより粉粒体Ｐに及ぼす突起１０の１個当たりの圧力は従来の突起より小さくなるように構成している。 Further, as shown in FIG. 9A, the projecting surfaces 10a and 10b of the anti-rotation projection 10 have a small angle (A direction, tangent line m in the rotational direction) with respect to the rotation direction of the rotary blade 7 (in the drawing). (θ 2 = about 20 degrees), and so as to have a gentle slope intersecting with each other, whereby the pressure per protrusion 10 exerted on the granular material P is configured to be smaller than that of the conventional protrusion. Yes.

上記内筒２は、図２に示す上端部２”の上方にさらに延長し、内筒２の容量を増加させることができるが、この場合においても、供回りは粉粒体Ｐの量が少なくなってきたときに生ずるので、上記各供回り防止突起１０は、上記内筒２の下端２’から内筒上端方向の所定範囲（図２の下端部２’から上端部２”に至る範囲）設けることが好ましい。   The inner cylinder 2 can be further extended above the upper end portion 2 ″ shown in FIG. 2 to increase the capacity of the inner cylinder 2. Even in this case, the amount of the granular material P is small. Each of the anti-rotation projections 10 is formed in a predetermined range from the lower end 2 ′ of the inner cylinder 2 to the upper end of the inner cylinder (range from the lower end 2 ′ to the upper end 2 ″ in FIG. 2). It is preferable to provide it.

そして、この供回り防止突起１０の上記内筒２の内面２ａからの最大高さＴ、即ち、上記内筒２の内面２から上記中心線Ｓ（横断面の二等辺三角形の頂点）までの高さＴは、当該内筒２の半径ｒに対して２〜３％（＝Ｔ／ｒ（％））となるように構成されている（図７参照）。   And the maximum height T from the inner surface 2a of the inner cylinder 2 of the anti-rotation projection 10, that is, the height from the inner surface 2 of the inner cylinder 2 to the center line S (vertex of the isosceles triangle in the cross section). The length T is configured to be 2 to 3% (= T / r (%)) with respect to the radius r of the inner cylinder 2 (see FIG. 7).

このように供回り防止突起１０の高さを従来の供回り防止突起に比較して低く形成すると共に、内筒２の内面に６０度毎に６箇所に形成することにより、１つの供回り防止突起１０が供回りしようとする粉粒体に及ぼす圧力は小さくなるが、供回り防止突起を６箇所に設けることにより、内筒２の内周の６箇所において粉粒体に均等に分散して上記圧力を及ぼすことができ、従来と同様に粉粒体の供回りを防止することができる。   In this way, the anti-rotation projection 10 is formed to have a lower height than the conventional anti-rotation projection 10 and is formed on the inner surface of the inner cylinder 2 at six locations every 60 degrees, thereby preventing one rotation prevention. Although the pressure exerted by the protrusion 10 on the granular material to be reduced is reduced, by providing the anti-rotation protrusion at six locations, the protrusion 10 is evenly dispersed in the granular material at six locations on the inner periphery of the inner cylinder 2. The said pressure can be exerted and the surroundings of a granular material can be prevented like the past.

また、このように供回り防止突起１０を内筒２の内面２ａの全周に亙り均等間隔で６箇所に設けることにより、１箇所の突起１０当たりの粉粒体Ｐに与える圧力は小さく、当該圧力が内筒２の内面全周に亙り均等に分散されているので、供回り防止突起１０近傍の粉粒体Ｐの乱れＫ（粉粒体の粗密部分）を少なくすることができる（図３、図７参照）。即ち、粉粒体Ｐの乱れＫが少なく、しかも乱れＫは内筒２の内周面の均等間隔毎に分散して生ずるため、混合材料の場合であっても偏析を生ずることを防止し得る。   In addition, by providing the anti-rotation projections 10 at six locations at equal intervals over the entire circumference of the inner surface 2a of the inner cylinder 2, the pressure applied to the granular material P per one projection 10 is small. Since the pressure is evenly distributed over the entire inner surface of the inner cylinder 2, the disturbance K (the dense portion of the granular material) of the granular material P in the vicinity of the anti-rotation projection 10 can be reduced (FIG. 3). FIG. 7). That is, since the disturbance K of the granular material P is small and the disturbance K is dispersed at equal intervals on the inner peripheral surface of the inner cylinder 2, segregation can be prevented even in the case of a mixed material. .

尚、上記供回り防止突起１０の傾斜面１０ａはその長手方向が上記仮想線Ｒに直交する方向（又は長手方向が攪拌翼７の回転方向Ａに直交する方向）の縦方向の緩やかな傾斜面であれば良く、突起１０の横断面形状は上記二等辺三角形状に限らず、他の横断面三角形状であっても良い。このように上記突起１０の傾斜面は、上記仮想線Ｒに直交する方向(垂直方向)には傾斜のない面をなし、上記垂直方向に直交する方向（水平方向）には斜面（１０ａ，１０ｂ）を形成する形状とすることが好ましい（図９（ａ）参照）。   Note that the inclined surface 10a of the anti-rotation projection 10 is a gentle inclined surface in the longitudinal direction whose longitudinal direction is perpendicular to the virtual line R (or the longitudinal direction is perpendicular to the rotational direction A of the stirring blade 7). The cross-sectional shape of the protrusion 10 is not limited to the isosceles triangle shape, and may be another cross-sectional triangle shape. As described above, the inclined surface of the protrusion 10 forms a surface having no inclination in the direction (vertical direction) orthogonal to the virtual line R, and the inclined surface (10a, 10b) in the direction orthogonal to the vertical direction (horizontal direction). ) Is preferably formed (see FIG. 9A).

図６に示す供回り防止突起１１は、本発明の他の実施形態であり、横断面形状が円弧となるように形成されたものである。この供回り防止突起１１は、内筒２の内面２ａにおいて、該内面２ａの上端から下端に至る長さの円弧面１１ａにより縦方向（回転翼７の回転方向Ａに直交する縦方向）の柱形状に設けられている。即ち、上記内筒２の内面２ａに、その内周に沿う均等間隔毎に、内周方向に突出する円弧面１１ａを有する縦方向の柱状の複数の供回り防止突起が設けられている。また、上記突起１１の上面１１ｃ、底面１１ｃ’は閉鎖されており、全体として縦方向の円弧柱形状となっている。この供回り防止突起１１も、図８に示すように、上記突起１０と同様に内筒２の内面２ａの内周に沿って６０度毎に６箇所に形成されている。   The rotation prevention protrusion 11 shown in FIG. 6 is another embodiment of the present invention, and is formed so that the cross-sectional shape is an arc. The rotation prevention protrusion 11 is a column in the vertical direction (vertical direction perpendicular to the rotation direction A of the rotary blade 7) on the inner surface 2a of the inner cylinder 2 by an arc surface 11a having a length extending from the upper end to the lower end of the inner surface 2a. It is provided in the shape. That is, on the inner surface 2a of the inner cylinder 2, a plurality of vertical columnar rotation prevention projections having arcuate surfaces 11a protruding in the inner circumferential direction are provided at equal intervals along the inner circumference. Further, the upper surface 11c and the bottom surface 11c 'of the projection 11 are closed, and as a whole, has a circular arc column shape in the vertical direction. As shown in FIG. 8, the rotation prevention protrusions 11 are also formed at six locations every 60 degrees along the inner periphery of the inner surface 2 a of the inner cylinder 2, as with the protrusions 10.

この供回り防止突起１１の円弧面１１ａにおける円弧は、内筒２の半径ｒ上の仮想線Ｒの延長線上にある一点を中心とする円弧により形成されており、その最大高さＴ、即ち、内面２ａから円弧の最大高さまでの距離Ｔは、上記供回り防止突起１０と同様に、内筒２の半径の２〜３％（Ｔ／ｒ（％））となるように構成されている（図８参照）。   The circular arc on the circular arc surface 11a of the anti-rotation projection 11 is formed by an arc centered at one point on the extension line of the virtual line R on the radius r of the inner cylinder 2, and its maximum height T, that is, The distance T from the inner surface 2a to the maximum height of the circular arc is configured to be 2 to 3% (T / r (%)) of the radius of the inner cylinder 2 in the same manner as the rotation preventing projection 10 ( (See FIG. 8).

この供回り防止突起１１の円弧面１１ａは、図９（ｂ）に示すように、その円弧面上の接線ｎが回転羽根７の回転方向（矢印Ａ方向、回転方向の接線ｍ）に対して小さな角度（図９（ｂ）のθ３＝約２０度）で交差する緩やかな傾斜（曲面）を有するように構成されており、これにより粉粒体に及ぼす突起１１の１個当たりの圧力は従来の突起より小さくなるように構成している。また、円弧面であるため粉粒体Ｐの急激な乱れＫを抑制して材料の偏析をより効果的に抑制し得る作用を有する。 As shown in FIG. 9B, the circular arc surface 11a of the anti-rotation projection 11 has a tangent n on the circular arc surface with respect to the rotation direction of the rotary blade 7 (arrow A direction, tangent m in the rotation direction). It is configured to have a gentle slope (curved surface) that intersects at a small angle (θ 3 = about 20 degrees in FIG. 9B), whereby the pressure per protrusion 11 exerted on the granular material is It is comprised so that it may become smaller than the conventional protrusion. Moreover, since it is a circular arc surface, it has the effect | action which can suppress the rapid disorder K of the granular material P and can suppress the segregation of material more effectively.

また、上記内筒２は、図２に示す上端部２”の上方にさらに延長し、内筒２の容量を増加させることができるが、この場合においても、上記実施形態と同様、上記各供回り防止突起１１は、上記内筒２の下端２’から内筒上端方向の所定範囲（図２の下端部２’から上端部２”に至る範囲）設けることが好ましい。   In addition, the inner cylinder 2 can be further extended above the upper end portion 2 ″ shown in FIG. 2 to increase the capacity of the inner cylinder 2. In this case as well, as in the above embodiment, The rotation preventing protrusion 11 is preferably provided in a predetermined range from the lower end 2 ′ of the inner cylinder 2 to the upper end direction of the inner cylinder (a range from the lower end 2 ′ to the upper end 2 ″ in FIG. 2).

このように供回り防止突起１１の高さを従来の供回り防止突起に比較して低く形成すると共に、内筒２の内面に６０度毎に６箇所に形成することにより、上記突起１０と同様に、１つの供回り防止突起１１が供回りしようとする粉粒体Ｐに及ぼす圧力は小さくなるが、供回り防止突起１１を６箇所に設けることにより、内筒２の内周２ａの６箇所において粉粒体に均等に上記圧力を及ぼすことにより、従来と同様に粉粒体の供回りを防止することができる。   In this way, the height of the anti-rotation projection 11 is made lower than that of the conventional anti-rotation projection, and at the same time as the above-described protrusion 10 by forming it on the inner surface of the inner cylinder 2 at six locations every 60 degrees. In addition, although the pressure exerted on the granular material P to be rotated by one rotation prevention protrusion 11 is reduced, by providing the rotation prevention protrusions 11 at 6 positions, 6 positions on the inner circumference 2a of the inner cylinder 2 are provided. By applying the above pressure evenly to the granular material, the surrounding of the granular material can be prevented as in the conventional case.

また、このように供回り防止突起１１を内筒２の内面２ａの全周に亙り均等間隔で６箇所に設けることにより、１箇所の突起１１当たりの粉粒体に与える圧力は小さく、当該圧力が内筒の全周に亙り均等に分散されているので、供回り防止突起１１近傍の粉粒体の乱れＫ（粉粒体の粗密部分）を少なくすることができる（図５参照）。即ち、粉粒体Ｐの乱れＫが少なく、しかも乱れＫは内筒２の内周面の均等間隔毎に分散して生ずるため、混合材料の場合であっても偏析の発生を防止し得る。   In addition, by providing the anti-rotation projections 11 at six locations at equal intervals over the entire circumference of the inner surface 2a of the inner cylinder 2, the pressure applied to the granular material per projection 11 is small, and the pressure Is distributed evenly over the entire circumference of the inner cylinder, so that the turbulence K of the granular material in the vicinity of the anti-rotation projection 11 (the dense portion of the granular material) can be reduced (see FIG. 5). That is, since the disturbance K of the granular material P is small and the disturbance K is distributed at equal intervals on the inner peripheral surface of the inner cylinder 2, segregation can be prevented even in the case of a mixed material.

上記円弧面１１ａは、上記円弧面を円弧以外の湾曲面とした縦方向の曲面としても良い。即ち、上記供回り防止突起１１の突出面の長手方向が上記仮想線Ｒに直交する方向（又は長手方向が攪拌翼７の回転方向Ａに直交する方向）の縦方向の緩やかな円弧面又は曲面であれば良く、上記円弧面又は曲面とは、突起１１の長手方向に直交する円弧、曲線を包含する面をいう。このように上記突起１１の円弧面又は曲面は、上記仮想線Ｒに直交する方向(垂直方向)には直線状をなし、上記垂直方向に直交する方向（水平方向）にはある曲率を持った曲面を形成する形状とすることが好ましい。   The arc surface 11a may be a vertical curved surface in which the arc surface is a curved surface other than an arc. That is, a gentle arc surface or curved surface in the longitudinal direction in the direction in which the longitudinal direction of the projecting surface of the anti-rotation projection 11 is orthogonal to the virtual line R (or the longitudinal direction is orthogonal to the rotational direction A of the stirring blade 7). The arc surface or curved surface may be a surface including an arc or a curve that is orthogonal to the longitudinal direction of the protrusion 11. Thus, the arc surface or curved surface of the projection 11 is linear in the direction (vertical direction) orthogonal to the virtual line R, and has a certain curvature in the direction orthogonal to the vertical direction (horizontal direction). It is preferable to form a curved surface.

上記各実施形態では、供回り防止突起１０，１１を６０度毎に６個設けた例を示したが、図１０に示すように、当該突起１０，１１を４５度毎に８個設けても良い。   In each of the above-described embodiments, an example in which six rotation prevention protrusions 10 and 11 are provided every 60 degrees has been shown. However, as shown in FIG. 10, eight protrusions 10 and 11 may be provided every 45 degrees. good.

尚、図２中１２は減速機、１３は攪拌翼駆動用の電動機、１４は粉粒体の流量調節リングである。   In FIG. 2, 12 is a speed reducer, 13 is an electric motor for driving a stirring blade, and 14 is a flow rate adjusting ring for powder particles.

本発明の粉粒供給機は上述のように構成されているので、次にその動作を説明する。   Since the powder feeder of the present invention is configured as described above, its operation will be described next.

内筒２内に収納された粉粒体Ｐは、上記排出間隙ｔから材料通路４内に安息角ｑを以って拡散している。かかる状態で電動機１３を回転させると、スポーク７ａが矢印Ａ方向に回転し、同時に材料移送用スクレーパ９が回転する。   The granular material P accommodated in the inner cylinder 2 is diffused from the discharge gap t into the material passage 4 with an angle of repose q. When the electric motor 13 is rotated in this state, the spoke 7a rotates in the direction of arrow A, and at the same time, the material transfer scraper 9 rotates.

すると、上記スポーク７ａの回転に伴って内筒２内の粉粒体が材料通路４に移行して行き、同時に上記材料通路４内の粉粒体は、スクレーパ９の回転によって矢印Ａ方向に運搬され、排出口５まで運ばれ、当該排出口５から一定量ずつ排出されて行く。   Then, with the rotation of the spoke 7a, the granular material in the inner cylinder 2 moves to the material passage 4, and at the same time, the granular material in the material passage 4 is conveyed in the direction of arrow A by the rotation of the scraper 9. Then, it is carried to the discharge port 5 and discharged from the discharge port 5 by a certain amount.

このとき、内筒２内の材料が少なくなる等して、粉粒体Ｐと底板１’との摩擦抵抗、或いは、粉粒体と内筒２内面２ａとの摩擦抵抗が比較的小さくなったとしても、粉粒体Ｐは内筒２の内面２ａの内周に均等間隔で６箇所に設けられた供回り防止突起１０における６箇所の突出面１０ａ，１０ｂから均等に抵抗（圧力）を受けるため、上記内筒２の内周の均等な６箇所において、粉粒体Ｐと上記突起１０（６箇所）との間の摩擦抵抗が大きくなり、当該摩擦抵抗がスポーク７ａの攪拌力より小さくなることはなく、結果として粉粒体Ｐの供回りを防止することができる。   At this time, the frictional resistance between the granular material P and the bottom plate 1 'or the frictional resistance between the granular material and the inner cylinder 2 inner surface 2a is relatively small because the material in the inner cylinder 2 is reduced. However, the granular material P receives resistance (pressure) equally from the six projecting surfaces 10a and 10b of the rotation preventing projections 10 provided at six locations at equal intervals on the inner periphery of the inner surface 2a of the inner cylinder 2. Therefore, the frictional resistance between the granular material P and the protrusions 10 (six locations) is increased at six equal locations on the inner circumference of the inner cylinder 2, and the frictional resistance is smaller than the stirring force of the spokes 7a. There is nothing, and as a result, the rotation of the powder P can be prevented.

よって、内筒２に均等に配置された６個の供回り防止突起１０により、粉粒体に均等に抵抗を分散して与えることができ、これにより材料の供回りを効果的に防止することができる。   Therefore, the six anti-rotation protrusions 10 that are evenly arranged on the inner cylinder 2 can uniformly distribute the resistance to the granular material, thereby effectively preventing the supply of the material. Can do.

また、供回り防止突起１０の最大高さＴは、内筒２の半径ｒの２〜３％と非常に低く、また供回り防止突起１０の突出面１０ａが攪拌翼７の回転方向に対して緩やかに傾斜しているので（図９（ａ）参照）、１つの供回り防止突起１０の近傍で粉粒体Ｐに与える圧力は小さく、当該突起１０近傍での粉粒体Ｐの乱れＫは非常に少ないので、粉粒体Ｐの偏析をも防止することができる。   Further, the maximum height T of the rotation preventing projection 10 is very low, 2 to 3% of the radius r of the inner cylinder 2, and the protruding surface 10 a of the rotation preventing projection 10 is in the rotation direction of the stirring blade 7. Since it is gently inclined (see FIG. 9A), the pressure applied to the powder body P in the vicinity of one rotation prevention protrusion 10 is small, and the disturbance K of the powder body P in the vicinity of the protrusion 10 is Since there are very few, the segregation of the granular material P can also be prevented.

即ち、１個の供回り防止突起１０近傍での粉粒体Ｐの乱れＫを少なくすると共に、当該供回り防止突起１０を内筒２の内周面に均等間隔で６個に分散して設けることにより、粉粒体Ｐに与える抵抗を分散しつつ、粉粒体Ｐの乱れＫを少なくすることにより、全体として粉粒体Ｐの偏析をも防止することができる。   That is, the disturbance K of the granular material P in the vicinity of one rotation prevention protrusion 10 is reduced, and the rotation prevention protrusions 10 are provided on the inner peripheral surface of the inner cylinder 2 in a distributed manner at six intervals. Thus, segregation of the granular material P as a whole can be prevented by reducing the disturbance K of the granular material P while dispersing the resistance applied to the granular material P.

上記供回り防止突起１１を用いた場合においても、同様であり、粉粒体Ｐと底板１’との摩擦抵抗、或いは、粉粒体と内筒２内面２ａとの摩擦抵抗が比較的小さくなったとしても、粉粒体Ｐは内筒２の内面２ａの内周に均等間隔で６箇所に設けられた供回り防止突起１１における６箇所の円弧面１１ａから均等に抵抗（圧力）を受けるため、粉粒体Ｐと上記突起１０（６箇所）との間の摩擦抵抗が大きくなり、当該摩擦抵抗がスポーク７ａの攪拌力より小さくなることはなく粉粒体Ｐの供回りを防止することができる。   The same applies to the case where the rotation preventing projection 11 is used, and the frictional resistance between the granular material P and the bottom plate 1 'or the frictional resistance between the granular material and the inner cylinder 2 inner surface 2a becomes relatively small. Even so, the granular material P receives resistance (pressure) evenly from the six arcuate surfaces 11a in the anti-rotation projections 11 provided at six locations on the inner periphery of the inner surface 2a of the inner cylinder 2 at equal intervals. In addition, the frictional resistance between the granular material P and the protrusions 10 (six locations) is increased, and the frictional resistance is not smaller than the stirring force of the spokes 7a, and the circulation of the granular material P can be prevented. it can.

即ち、内筒２に均等に配置された６個の供回り防止突起１１により、粉粒体に均等に抵抗を分散して与えることができ、これにより材料の供回りを効果的に防止することができる。また、供回り防止突起１１の高さＴは、内筒２の半径ｒの２〜３％と非常に低く、また供回り防止突起１１の円弧面１１ａ（回転方向の対向面）が攪拌翼７の回転方向に対して緩やかに傾斜しているので（図９（ｂ）参照）、１つの供回り防止突起１１の近傍で粉粒体Ｐに与える圧力は小さく、当該突起１１近傍での粉粒体の乱れＫは非常に少ないので、粉粒体Ｐの偏析をも防止することができる。   That is, the six anti-rotation projections 11 that are evenly arranged on the inner cylinder 2 can uniformly distribute and provide resistance to the granular material, thereby effectively preventing the supply of the material. Can do. Further, the height T of the rotation preventing projection 11 is very low, 2 to 3% of the radius r of the inner cylinder 2, and the circular arc surface 11a (the surface facing the rotation direction) of the rotation preventing projection 11 is the stirring blade 7. (See FIG. 9B), the pressure applied to the granular material P in the vicinity of one rotation prevention projection 11 is small, and the granular material in the vicinity of the projection 11 Since the disturbance K of the body is very small, segregation of the granular material P can also be prevented.

即ち、１個の供回り防止突起１１近傍での粉粒体Ｐの乱れＫを少なくすると共に、当該供回り防止突起１１を内筒２の内周面に均等間隔で６個に分散して設けることにより、粉粒体Ｐに与える抵抗を分散しつつ、粉粒体Ｐの乱れＫを少なくすることにより、全体として粉粒体Ｐの偏析をも防止することができる。   That is, the disturbance K of the granular material P in the vicinity of one rotation prevention protrusion 11 is reduced, and the rotation prevention protrusions 11 are distributed on the inner peripheral surface of the inner cylinder 2 at six equal intervals. Thus, segregation of the granular material P as a whole can be prevented by reducing the disturbance K of the granular material P while dispersing the resistance applied to the granular material P.

以上のように、本発明は、供回り防止突起１０，１１による粉粒体Ｐの供回りを防止するための抵抗が内筒２の内周２ａ全体に略均一に分散されるため、粉粒体Ｐの供回りを効果的に防止することができると共に、粉粒体材料の乱れが少ないため、物理的性質の異なる複数の材料が混在するような混合材料を用いた場合であっても、材料の偏析を効果的に防止することができ、安定した材料の定量排出を可能とするものである。   As described above, according to the present invention, since the resistance for preventing the rotation of the powder body P by the rotation prevention protrusions 10 and 11 is distributed substantially uniformly over the entire inner periphery 2a of the inner cylinder 2, Since it is possible to effectively prevent the circulation of the body P and less disturb the powder material, even when using a mixed material in which a plurality of materials having different physical properties are mixed, Segregation of the material can be effectively prevented, and stable quantitative discharge of the material is enabled.

本発明は粉粒体材料の供回り及び偏析を効果的に防止し得るものであるから、各種の物理的性質の粉粒体材料を定量供給するための粉粒体供給機として各種の分野にて利用し得るものである。   Since the present invention can effectively prevent the rotation and segregation of the powder material, it can be used in various fields as a powder supply machine for quantitatively supplying the powder material of various physical properties. Can be used.

本発明に係る粉粒体供給機の一部切り欠き平面図である。It is a partially notched top view of the granular material supply machine which concerns on this invention. 図１のＸ−Ｘ線断面図である。It is the XX sectional view taken on the line of FIG. 同上装置の供回り防止突起近傍の断面図である。It is sectional drawing of the rotation prevention protrusion vicinity of an apparatus same as the above. 同上装置の供回り防止突起近傍の斜視図である。It is a perspective view of the surrounding prevention protrusion vicinity of an apparatus same as the above. 同上装置の供回り防止突起の断面図である。It is sectional drawing of the rotation prevention protrusion of an apparatus same as the above. 同上装置の供回り防止突起の斜視図である。It is a perspective view of the rotation prevention protrusion of an apparatus same as the above. 同上装置の供回り防止突起を有する内筒の概略平面図である。It is a schematic plan view of the inner cylinder which has the rotation prevention protrusion of an apparatus same as the above. 同上装置の供回り防止突起を有する内筒の概略平面図である。It is a schematic plan view of the inner cylinder which has the rotation prevention protrusion of an apparatus same as the above. （ａ），（ｂ）共に同上装置の供回り防止突起と攪拌翼の回転方向との関係を示す説明図である。(A), (b) is explanatory drawing which shows the relationship between the rotation prevention protrusion of the same apparatus as above, and the rotation direction of a stirring blade. 同上装置の供回り防止突起を有する内筒の他の実施形態の概略平面図である。It is a schematic plan view of other embodiment of the inner cylinder which has a rotation prevention protrusion of an apparatus same as the above. 従来の粉粒体供給機の供回り防止突起近傍の断面図である。It is sectional drawing of the rotation prevention protrusion vicinity of the conventional granular material supply machine.

符号の説明Explanation of symbols

１ 外筒
１’ 底板
２ 内筒
２ａ 内面
４ 環状通路
５ 排出口
６ 直立回転軸
７ 攪拌翼(回転体)
７ａ スポーク
８ 回転リング（筒状外縁）
９ 材料移送用スクレーパ
１０ 供回り防止突起
１０ａ 突出面
１０ｂ 突出面
１１ 供回り防止突起
１１ａ 円弧面
Ｐ 粉粒体
Ｔ 最大高さ
ｒ 半径
ｔ 粉粒体排出間隔
ｑ 安息角 DESCRIPTION OF SYMBOLS 1 Outer cylinder 1 'Bottom plate 2 Inner cylinder 2a Inner surface 4 Annular passage 5 Outlet 6 Upright rotating shaft 7 Stirring blade (rotary body)
7a Spoke 8 Rotating ring (cylindrical outer edge)
9 Scraper 10 for material transfer Rotation prevention projection 10a Projection surface 10b Projection surface 11 Rotation prevention projection 11a Arc surface P Granule T Maximum height r Radius t Granule discharge interval q Repose angle

Claims (5)

底板に外筒を立設して粉粒体供給ケースとし、上記底板の上方に粉粒体排出間隙を介して内筒を同心に支持し、上記底板の中心に直立回転軸を設け、該回転軸に上記底板上に位置する複数のスポークを設けて回転体を形成し、該回転体の筒状外縁を外筒の内周に近接して内外筒間の環状通路を形成し、上記筒状外縁に上記環状通路方向の材料移送用スクレーパを複数設け、上記粉粒体排出間隙から所定の安息角にて上記環状通路に拡散した粉粒体を上記スクレーパにより粉粒体排出口に移送する粉粒体供給機において、
上記内筒の内面に、その内周に沿う均等間隔毎に、内筒中心方向に突出する二面を有する縦方向の略三角柱形状の複数の供回り防止突起を設け、
上記各供回り防止突起の上記二面のなす角度が鈍角であり、
かつ上記供回り防止突起の最大高さが、内筒の半径に対して２％〜３％であることを特徴とする粉粒体供給機。 An outer cylinder is erected on the bottom plate to form a powder supply case, the inner cylinder is concentrically supported above the bottom plate via a powder discharge gap, and an upright rotating shaft is provided at the center of the bottom plate. A plurality of spokes located on the bottom plate are provided on the shaft to form a rotating body, and the cylindrical outer edge of the rotating body is close to the inner periphery of the outer cylinder to form an annular passage between the inner and outer cylinders. A plurality of scrapers for material transfer in the direction of the annular passage are provided on the outer edge, and the powder that is diffused into the annular passage at a predetermined angle of repose from the particulate discharge gap is transferred to the powder outlet by the scraper. In the granule feeder,
The inner surface of the inner cylinder is provided with a plurality of rotation prevention protrusions having a substantially triangular prism shape in the longitudinal direction having two surfaces protruding in the center direction of the inner cylinder at equal intervals along the inner periphery thereof.
The angle formed by the two surfaces of each of the anti-rotation projections is an obtuse angle,
And the maximum height of the said rotation prevention protrusion is 2%-3% with respect to the radius of an inner cylinder, The granular material supply machine characterized by the above-mentioned. 底板に外筒を立設して粉粒体供給ケースとし、上記底板の上方に粉粒体排出間隙を介して内筒を同心に支持し、上記底板の中心に直立回転軸を設け、該回転軸に上記底板上に位置する複数のスポークを設けて回転体を形成し、該回転体の筒状外縁を外筒の内周に近接して内外筒間の環状通路を形成し、上記筒状外縁に上記環状通路方向の材料移送用スクレーパを複数設け、上記粉粒体排出間隙から所定の安息角にて上記環状通路に拡散した粉粒体を上記スクレーパにより粉粒体排出口に移送する粉粒体供給機において、
上記内筒の内面に、その内周に沿う均等間隔毎に、内筒中心方向に突出する円弧面を有する縦方向の柱状の複数の供回り防止突起を設け、
かつ上記供回り防止突起の最大高さが、内筒の半径に対して２％〜３％であることを特徴とする粉粒体供給機。 An outer cylinder is erected on the bottom plate to form a powder supply case, the inner cylinder is concentrically supported above the bottom plate via a powder discharge gap, and an upright rotating shaft is provided at the center of the bottom plate. A plurality of spokes located on the bottom plate are provided on the shaft to form a rotating body, and the cylindrical outer edge of the rotating body is close to the inner periphery of the outer cylinder to form an annular passage between the inner and outer cylinders. A plurality of scrapers for material transfer in the direction of the annular passage are provided on the outer edge, and the powder that is diffused into the annular passage at a predetermined angle of repose from the particulate discharge gap is transferred to the powder outlet by the scraper. In the granule feeder,
On the inner surface of the inner cylinder, a plurality of vertical columnar anti-rotation protrusions having an arc surface protruding in the inner cylinder center direction are provided at equal intervals along the inner circumference,
And the maximum height of the said rotation prevention protrusion is 2%-3% with respect to the radius of an inner cylinder, The granular material supply machine characterized by the above-mentioned. 上記供回り防止突起の円弧面に代えて、内筒中心方向に突出する曲面としたものであることを特徴とする請求項２記載の粉粒体供給機。   3. The powder and granular material supply machine according to claim 2, wherein instead of the circular arc surface of the rotation preventing projection, the powder body is a curved surface projecting toward the center of the inner cylinder. 上記各供回り防止突起は、上記内筒の下端から内筒上端方向の所定範囲に設けられているものであることを特徴とする請求項１〜３の何れかに記載の粉粒体供給機。   The powder supply unit according to any one of claims 1 to 3, wherein each of the rotation prevention protrusions is provided in a predetermined range from a lower end of the inner cylinder to an upper end direction of the inner cylinder. . 上記供回り防止突起は、内筒の内周に沿って均等間隔で６個又は８個設けられているものであることを特徴とする請求項１〜４の何れかに記載の粉粒体供給機。   The granular material supply according to any one of claims 1 to 4, wherein six or eight of the rotation prevention protrusions are provided at equal intervals along the inner periphery of the inner cylinder. Machine.
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