JP2008105005A - Rotary agitation apparatus - Google Patents

Rotary agitation apparatus Download PDF

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JP2008105005A
JP2008105005A JP2006319281A JP2006319281A JP2008105005A JP 2008105005 A JP2008105005 A JP 2008105005A JP 2006319281 A JP2006319281 A JP 2006319281A JP 2006319281 A JP2006319281 A JP 2006319281A JP 2008105005 A JP2008105005 A JP 2008105005A
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rotary
cylindrical body
stirred
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raw material
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Yozo Yamamoto
洋三 山本
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  • Accessories For Mixers (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Drying Of Solid Materials (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an agitation apparatus which can fully mix agitate a raw material to be agitated while moving it to an exhaust opening in a rotary cylindrical body, also fully dry the raw material to be agitated, and separate the material to be agitated into pieces of aggregates and powder and which can prevent the raw material to be agitated, sticking to the inner surface of the rotary cylindrical body, from growing over the height of a lifting plate, and make powder sufficiently float to be effectively recovered. <P>SOLUTION: The agitation apparatus has the rotary cylindrical body 1, the inner surface of which keeps a plurality of lifting plates 4 projectedly arranged, wherein the lower end of a screw blade 5, installed to a rotary shaft 50 which is inserted into the inner part of the rotary cylindrical body in the axial direction to be axially supported, is axially supported as to come close to the lifting plates downwards the inner part of the rotary cylindrical body, and a powder sucking apparatus 7 for recovering floating powder by aspirating the inner air of the rotary cylindrical body, wherein the powder sucking apparatus is formed so that this apparatus makes the raw material to be agitated move towards the exhaust opening 11 while making the raw material to be agitated mix agitate by rotation of the screw blade. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、砕石、砕砂、コンクリート廃骨材、泥、土砂、スラッジ、脱水スラッジ、廃棄混合骨材、高炉スラグ骨材等の単体又は混合物、それに戻り生コンクートに微粉末又は／及び骨材を混合させた戻り生コン混合骨材等を被攪拌原料とし、これらの被攪拌原料を混合攪拌させながら乾燥させると共に、微粉末を回収するために用いる回転攪拌装置に関する。  The present invention provides crushed stone, crushed sand, concrete waste aggregate, mud, earth and sand, sludge, dewatered sludge, waste mixed aggregate, blast furnace slag aggregate, etc. The present invention relates to a rotary stirrer that is used to recover a fine powder as well as drying the mixed raw agglomerate mixed aggregate and the like while stirring and stirring these raw materials.

従来、砕石等の原料骨材を攪拌混合させるための混合攪拌装置としては、例えば、横型ロータリドラム内にロータを偏心して設け、ロータリドラムとロータとを逆回転させながら原料骨材を混合攪拌させるようにしたもの（例えば、新六精機株式会社製：ハリケーン）が知られている（特許文献１参照）。  Conventionally, as a mixing and stirring device for stirring and mixing raw material aggregate such as crushed stone, for example, a rotor is eccentrically provided in a horizontal rotary drum, and the raw material aggregate is mixed and stirred while rotating the rotary drum and the rotor in reverse. What has been made (for example, Hurricane manufactured by Shinroku Seiki Co., Ltd.) is known (see Patent Document 1).

このほか、一端に投入口が開口され、他端に排出口が開口された回転円筒体を備え、この回転円筒体の内面に、被攪拌原料を持ち上げて落下させるための複数の持ち上げ板が突設された回転攪拌装置が知られている。
特開２００５−２２００００号公報 In addition, a rotating cylinder having an inlet at one end and an outlet at the other is provided. A plurality of lifting plates for lifting and dropping the material to be stirred protrudes from the inner surface of the rotating cylinder. An installed rotary stirring device is known.
JP-A-2005-220,000

しかしながら、従来の横型ロータリドラム内にロータを偏心して設けた混合攪拌装置は、原料骨材同士の擦れ合いや衝突によって、原料骨材の角張りを取ることを主目的としたもので、原料骨材を混合攪拌させながら乾燥させるための装置として用いるには適していない。  However, the conventional mixing and agitating device in which the rotor is eccentrically disposed in the horizontal rotary drum is mainly intended to remove the angularity of the raw material aggregate by rubbing or colliding with the raw material aggregate. It is not suitable for use as an apparatus for drying while mixing and stirring the material.

又、回転円筒体の内面に複数の持ち上げ板が突設された回転攪拌装置については、内部に投入された原料骨材を回転円筒体の回転に伴い持ち上げ板により持ち上げて落下させるという混合攪拌を繰り返すには適しているが、原料骨材が水分を含んで湿っているような場合（含水率３％程度以上）には、十分な乾燥ができないという問題があった。
特に、乾燥させたのちの骨材原料を篩い装置によって選別するような場合、骨材原料の乾燥が不十分であると、篩い装置の篩目に目詰まりが生じたり、骨材原料同士が結着したままになったりしているため、選別効率が著しく低下して作業能率を向上できないという問題が生じる。In addition, for a rotary agitating device in which a plurality of lifting plates protrude from the inner surface of the rotating cylinder, mixing stirring is performed in which the raw material aggregate charged therein is lifted and dropped by the lifting plate as the rotating cylinder rotates. Although it is suitable for repetition, there is a problem that sufficient drying cannot be performed when the raw material aggregate is moist and contains moisture (moisture content of about 3% or more).
In particular, when the aggregate material after drying is selected by a sieving device, if the aggregate material is not sufficiently dried, the screen of the sieving device may be clogged or the aggregate materials may be bonded together. Since it is still worn, there is a problem that the sorting efficiency is remarkably lowered and the working efficiency cannot be improved.

又、被攪拌原料が湿っている場合には、微粉末が原料骨材や回転円筒体に付着し、回転円筒体内で浮遊できないため、吸引装置を備えたとしても、その能力を十分に発揮できず、微粉末の回収効率が低いという問題があった。  In addition, when the material to be stirred is wet, the fine powder adheres to the raw material aggregate and the rotating cylinder and cannot float in the rotating cylinder, so even if it is equipped with a suction device, its ability can be fully demonstrated. However, there was a problem that the recovery efficiency of the fine powder was low.

又、被攪拌原料が湿っている場合には、回転円筒体の内面、特に投入口付近の内面に被攪拌原料が付着し、これが次々に付着して持ち上げ板の高さ以上に成長してしまうと、被攪拌原料の自然剥離が全く不可能になり、この結果、持ち上げ板の機能が発揮できなくなるという問題があった。  In addition, when the material to be stirred is moist, the material to be stirred adheres to the inner surface of the rotating cylindrical body, particularly the inner surface near the inlet, and this successively adheres and grows beyond the height of the lifting plate. As a result, there is a problem that the natural peeling of the material to be stirred becomes impossible, and as a result, the function of the lifting plate cannot be exhibited.

本発明は、回転円筒体内において被攪拌原料を排出口に向けて移動させながら十分に混合攪拌させると共に、その被攪拌原料に風を当てることにより十分に乾燥させ、かつ被攪拌原料を骨材や微粉末にバラバラに分離させることができ、又、被攪拌原料が湿っている場合に、回転円筒体の内面に被攪拌原料が付着したとしても、その付着した被攪拌原料が持ち上げ板の高さ以上に成長するのを防止することで、できるだけ被攪拌原料の自然剥離を促すことができ、また、微粉末を十分に浮遊させることで効率よく浮遊微粉末の回収ができるようにした回転攪拌装置を提供することを課題としている。  The present invention sufficiently stirs and stirs the raw material to be stirred in the rotating cylinder while moving it toward the discharge port, and sufficiently dries by applying air to the raw material to be stirred. Even if the material to be stirred adheres to the inner surface of the rotating cylinder when the material to be stirred is moist, it can be separated into fine powders. Rotating stirrer that prevents natural growth of the raw material to be stirred as much as possible by preventing it from growing above, and that can efficiently collect floating fine powder by sufficiently floating the fine powder It is an issue to provide.

上記の課題を解決するために、本発明（請求項１）の回転攪拌装置は、
一端に投入口が開口され、他端に排出口が開口された回転円筒体を備え、前記投入口から投入した被攪拌原料を排出口に向けて移動させながら混合攪拌させるようにした回転攪拌装置であって、
前記回転円筒体の内面に、被攪拌原料を持ち上げて落下させるための複数の持ち上げ板が回転円筒体の軸方向に延在する状態で突設され、
前記回転円筒体の内部に軸方向に挿通して軸支された回転軸にスクリュー羽根が設けられると共に、このスクリュー羽根の下端が回転円筒体の内部下方において前記持ち上げ板に近接するように、前記回転軸が回転円筒体の軸心から下方にオフセットした位置で軸支され、
前記スクリュー羽根の回転により被攪拌原料を混合攪拌させながら排出口に向けて移動させるように形成され、
かつ回転円筒体の内部空気を吸引して浮遊微粉末を回収するための微粉末吸入装置を備えている構成とした。In order to solve the above problems, the rotary stirring device of the present invention (Claim 1)
A rotary stirrer provided with a rotating cylindrical body having an inlet at one end and an outlet at the other end, which is mixed and stirred while moving the material to be stirred charged from the inlet toward the outlet. Because
On the inner surface of the rotating cylinder, a plurality of lifting plates for lifting and dropping the raw material to be stirred are projected in a state extending in the axial direction of the rotating cylinder,
A screw blade is provided on a rotating shaft that is axially inserted into and supported by the inside of the rotating cylinder, and the lower end of the screw blade is close to the lifting plate below the inside of the rotating cylinder. The rotating shaft is pivotally supported at a position offset downward from the axis of the rotating cylindrical body,
It is formed to move toward the discharge port while mixing and stirring the material to be stirred by the rotation of the screw blade,
And it was set as the structure provided with the fine powder suction device for attracting | sucking the internal air of a rotating cylinder and collect | recovering floating fine powder.

又、本発明（請求項２）の回転攪拌装置は、請求項１記載の回転攪拌装置において、前記スクリュー羽根が帯状螺旋板により形成され、この帯状螺旋板が回転軸との間に空隙を保持するように支持材を介して回転軸に取り付けられている構成とした。  The rotary stirring device of the present invention (Claim 2) is the rotary stirring device according to Claim 1, wherein the screw blades are formed by a belt-like spiral plate, and the belt-like spiral plate holds a gap between the rotary shaft. Thus, the configuration is such that the rotary shaft is attached via a support material.

又、本発明（請求項３）の回転攪拌装置は、請求項１又は２記載の回転攪拌装置において、前記回転円筒体の内部に風を送り込むための送風装置が設けられている構成とした。  Moreover, the rotary stirring device of the present invention (Claim 3) is the rotary stirring device according to Claim 1 or 2, wherein a blower device is provided for sending air into the rotating cylindrical body.

又、本発明（請求項４）の回転攪拌装置は、請求項３記載の回転攪拌装置において、前記送風装置には、回転円筒体の内部に送風する風を加熱するための加熱装置が設けられている構成とした。  According to the rotary stirring device of the present invention (Claim 4), in the rotary stirring device according to Claim 3, the air blowing device is provided with a heating device for heating the air blown into the rotating cylindrical body. It was set as the structure.

又、本発明（請求項５）の回転攪拌装置は、請求項３又は４記載の回転攪拌装置において、送風装置は前記回転円筒体の内部に投入口から排出口に向けて風を送り込むように形成され、前記微粉末吸入装置は回転円筒体の終端部に吸入口が形成されている構成とした。  In the rotary stirring device according to the present invention (Claim 5), in the rotary stirring device according to Claim 3 or 4, the blower device feeds air into the rotary cylindrical body from the inlet to the outlet. The fine powder inhaler was formed with a suction port formed at the end of the rotating cylinder.

又、本発明（請求項６）の回転攪拌装置は、請求項１〜５のいずれかに記載の回転攪拌装置において、上面が開放した樋状体と、この樋状体の内底部に設けられた螺旋羽根とを備えたスクリューコンベアが前記回転円筒体の投入口に配設され、前記樋状体は先端が回転円筒体の投入口に挿入する状態にフレームに取り付けられ、前記螺旋羽根は前記回転軸の投入口延長軸部分に設けられている構成とした。  Moreover, the rotary stirring apparatus of the present invention (Claim 6) is the rotary stirring apparatus according to any one of Claims 1 to 5, and is provided on a bowl-shaped body having an open upper surface and an inner bottom portion of the bowl-shaped body. A screw conveyor provided with a spiral blade is disposed at the inlet of the rotating cylindrical body, the bowl-like body is attached to the frame so that a tip is inserted into the inlet of the rotating cylindrical body, and the spiral blade is It was set as the structure provided in the insertion port extension shaft part of the rotating shaft.

又、本発明（請求項７）の回転攪拌装置は、請求項１〜６のいずれかに記載の回転攪拌装置において、前記回転円筒体の終端に、周壁に多数の透孔が形成された篩い円筒体が一体に連結されている構成とした。  Moreover, the rotary stirring device of the present invention (Claim 7) is the rotary stirring device according to any one of Claims 1 to 6, wherein a sieve having a large number of through holes in the peripheral wall is formed at the end of the rotating cylindrical body. It was set as the structure by which the cylindrical body was connected integrally.

本発明（請求項１）の回転攪拌装置は、回転円筒体の内部に投入口から投入した被攪拌原料を排出口に向けて移動させながら混合攪拌させると共に、微粉末吸入装置によって内部空気を吸引させることに伴い発生する風を、混合攪拌中の被攪拌原料に当てることができる。  The rotary stirring device of the present invention (Claim 1) mixes and stirs the raw material to be stirred introduced from the inlet into the rotary cylinder while moving toward the outlet, and sucks the internal air by the fine powder inhaler. It is possible to apply the wind generated by the mixing to the material to be stirred during mixing and stirring.

この場合、前記回転円筒体の内面に持ち上げ板が突設されているため、回転円筒体の回転に伴い持ち上げ板により被攪拌原料を持ち上げて落下させるという混合攪拌を繰り返すことができ、被攪拌原料を効果的に乾燥させることができる。
又、回転軸に設けたスクリュー羽根の回転により被攪拌原料を排出口に向けて移動させながら混合攪拌させることができる。
このように、スクリュー羽根と持ち上げ板との両方で被攪拌原料を混合攪拌させるため、被攪拌原料を骨材や微粉末にバラバラに分離させることができる。
又、微粉末吸入装置による内部空気の吸引に伴い、回転円筒体の内部には風が発生するもので、この風を上記のようにバラバラに分離して混合攪拌されている途中の被攪拌原料に当てることができるため、被攪拌原料を十分に乾燥させることができる。In this case, since the lifting plate protrudes from the inner surface of the rotating cylindrical body, the mixing stirring can be repeated in which the stirring raw material is lifted and dropped by the lifting plate along with the rotation of the rotating cylindrical body. Can be effectively dried.
Further, mixing and stirring can be performed while moving the material to be stirred toward the discharge port by the rotation of the screw blade provided on the rotating shaft.
As described above, since the material to be stirred is mixed and stirred by both the screw blade and the lifting plate, the material to be stirred can be separated into aggregates and fine powders.
Also, as the internal air is sucked by the fine powder inhaler, a wind is generated inside the rotating cylindrical body. The material to be stirred while the air is separated and mixed and stirred as described above. Therefore, the raw material to be stirred can be sufficiently dried.

上記のように、被攪拌原料を乾燥させることができるため、これを篩い装置によって選別する際に、篩目に目詰まりが生じるのを防止させることができるし、被攪拌原料を骨材や微粉末にバラバラに分離させることができるため、効率よく選別することができる。  As described above, since the raw material to be stirred can be dried, clogging can be prevented from occurring in the sieve screen when the raw material is selected by a sieving device. Since the powder can be separated into pieces, it can be sorted efficiently.

又、被攪拌原料に含まれている微粉末は、被攪拌原料を上記のように混合攪拌し、乾燥させることに伴い回転円筒体の内部で浮遊させることができるため、この浮遊微粉末を微粉末吸入装置によって効率よく回収することができる。  The fine powder contained in the material to be stirred can be suspended inside the rotating cylinder as the material to be stirred is mixed and stirred as described above and dried. It can be efficiently collected by the powder inhaler.

又、スクリュー羽根の回転軸を回転円筒体の軸心から下方にオフセットした位置に軸支することで、スクリュー羽根の下端が回転円筒体の内部下方において持ち上げ板に近接するように形成しているため、被攪拌原料が湿っているような場合、この被攪拌原料が持ち上げ板の高さ以上に成長しようとすると、その成長部分をスクリュー羽根によって掻き取ることができる。
これにより、回転円筒体の内面付着した被攪拌原料が持ち上げ板の高さ以上に成長するのを防止することができ、持ち上げ板の機能を発揮させるべく、できるだけ被攪拌原料の自然剥離を促すことができる。Moreover, the lower end of the screw blade is formed so that the lower end of the screw blade is close to the lifting plate in the lower part of the inside of the rotary cylinder by pivotally supporting the rotation axis of the screw blade at a position offset downward from the axis of the rotary cylinder. Therefore, when the raw material to be stirred is wet, if the raw material to be stirred grows beyond the height of the lifting plate, the growing portion can be scraped off by the screw blade.
This prevents the stirred raw material attached to the inner surface of the rotating cylinder from growing beyond the height of the lifting plate, and promotes the natural separation of the stirred raw material as much as possible to exert the function of the lifting plate. Can do.

又、スクリュー羽根を帯状螺旋板により形成して、この帯状螺旋板と回転軸との間に空隙を保持させるように形成すると（請求項２）、この空隙に風を通すことができるため、被攪拌原料に対して風を十分に当てることができ、被攪拌原料を能率よく乾燥させることができる。  Further, when the screw blade is formed of a belt-like spiral plate and is formed so as to hold a gap between the belt-like spiral plate and the rotation shaft (Claim 2), air can be passed through the gap. Wind can be sufficiently applied to the stirring raw material, and the stirring raw material can be efficiently dried.

又、送風装置を設けると（請求項３）、回転円筒体内で混合攪拌されている被攪拌原料に対し、微粉末吸入装置の吸引に伴う風に加えて、この送風装置からの風を当てることができ、より効果的に被攪拌原料を乾燥させることができる。
この送風装置は、被攪拌原料が湿っている場合に使用するのが特に効果的であり、被攪拌原料が当初から乾燥しているような場合等には、必ずしも使用する必要はなく、被攪拌原料の乾燥状態等を勘案しながら使用の必要性を判断する。In addition, when a blower is provided (Claim 3), the air from the blower is applied to the agitated raw material mixed and stirred in the rotating cylinder in addition to the wind accompanying the suction of the fine powder suction device. And the material to be stirred can be dried more effectively.
This blower is particularly effective when the raw material to be stirred is wet, and is not necessarily used when the raw material to be stirred is dried from the beginning. The necessity of use is judged taking into account the dryness of the raw materials.

なお、送風装置に加熱装置を設けると（請求項４）、回転円筒体の内部に送風する風を加熱して熱風を送風することができ、乾燥効率を向上させることができる。  In addition, when a heating apparatus is provided in the air blower (Claim 4), the wind blown into the inside of the rotating cylindrical body can be heated to blow hot air, and the drying efficiency can be improved.

又、送風装置を投入口から排出口に向けて風を送り込むように形成させ、かつ微粉末吸入装置の吸入口を閉塞周壁の終端部に設けると（請求項５）、浮遊微粉末を回転円筒体の終端部においてほぼ回収できるため、微粉末が回転円筒体の外部に飛散するのを抑制することができる。  Further, when the blower is formed so as to send air from the inlet to the outlet, and the suction port of the fine powder inhaler is provided at the end of the closed peripheral wall (Claim 5), the floating fine powder is turned into a rotating cylinder. Since it can collect | recover substantially in the terminal part of a body, it can suppress that fine powder disperses outside the rotating cylindrical body.

又、回転円筒体の投入口に、上面が開放した樋状体と、この樋状体の内底部に設けられた螺旋羽根とを備えたスクリューコンベアを配設すると（請求項６）、このスクリューコンベアを原料供給装置として被攪拌原料を回転円筒体の内部に投入させることができるし、このスクリューコンベアによって被攪拌原料を混合攪拌させることができる。  Further, when a screw conveyor provided with a bowl-shaped body having an open upper surface and a spiral blade provided on the inner bottom of the bowl-shaped body is disposed at the inlet of the rotating cylinder (claim 6), The material to be stirred can be introduced into the inside of the rotating cylindrical body using the conveyor as the material supply device, and the material to be stirred can be mixed and stirred by this screw conveyor.

又、回転円筒体の終端に、周壁に多数の透孔が形成された篩い円筒体を一体に連結させると（請求項７）、回転円筒体の内部での混合攪拌によって骨材や微粉末にバラバラに分離され、かつ乾燥された被選別原料を引き続き連続して篩い円筒体の内部に移行させることができ、ここで透孔を篩目として骨材を選別することができる。  Further, when a sieving cylinder having a large number of through holes in the peripheral wall is integrally connected to the end of the rotating cylinder (Claim 7), the mixture and agitation inside the rotating cylinder causes the aggregate and fine powder to be mixed. The material to be sorted separated and dried can be continuously transferred to the inside of the sieving cylindrical body, where the aggregate can be sorted using the through holes as sieve meshes.

図１は本発明に係る回転攪拌装置の実施例を示す側面断面図、図２及び図３はこの回転攪拌装置の回転円筒体を示す断面図で、図２は図１のＡ−Ａ断面図、図３は図１のＢ−Ｂ断面図である。  1 is a side sectional view showing an embodiment of a rotary stirring device according to the present invention, FIGS. 2 and 3 are sectional views showing a rotating cylindrical body of the rotary stirring device, and FIG. 2 is a sectional view taken along line AA in FIG. 3 is a cross-sectional view taken along the line BB in FIG.

図において、１は回転円筒体で、一端（図１では左端）に投入口１０が開口され、他端（図１では右端）に排出口１１が開口され、この回転円筒体１の終端に、周壁に多数の透孔９０が形成された篩い円筒体９が一体に連結されている。
回転円筒体１は、水平に設けてもよいし、排出口１１に向けて若干の下り傾斜で設けてもよい。In the figure, reference numeral 1 denotes a rotating cylinder, which has an inlet 10 at one end (left end in FIG. 1) and a discharge port 11 at the other end (right end in FIG. 1). A sieve cylindrical body 9 having a large number of through holes 90 formed in the peripheral wall is integrally connected.
The rotating cylindrical body 1 may be provided horizontally, or may be provided with a slight downward inclination toward the discharge port 11.

前記篩い円筒体９は、回転円筒体１を通過した被攪拌原料を、透孔９０を篩目としてアンダーサイズ骨材とオーバサイズ骨材に篩い選別するためのもので、アンダーサイズ骨材は透孔９０を通過して排出シュート９１により回収され、オーバサイズ骨材は終端口９２から排出されて排出シュート９３により回収されるようになっている。
篩い円筒体９は、多数のメッシュ透孔を有する網状筒体で形成してもよいし、多数の小透孔が形成されたパンチング板筒体で形成してもよい。The sieving cylinder 9 is for sieving and sorting the material to be stirred that has passed through the rotating cylinder 1 into an undersize aggregate and an oversize aggregate using the through holes 90 as a sieve, and the undersize aggregate is transparent. The oversized aggregate passes through the hole 90 and is collected by the discharge chute 91, and the oversized aggregate is discharged from the terminal end 92 and collected by the discharge chute 93.
The sieving cylinder 9 may be formed of a net-like cylinder having a large number of mesh through holes, or a punching plate cylinder having a large number of small through holes.

前記回転円筒体１はフレーム２に回転可能に支持されている。
その回転駆動構造は、両端部外周に突設した環状レール１２の下部をフレーム２に設けた２個のローラ２０により回転自在に支持させると共に、外周に設けたプーリ１３と電動モータ３のプーリ３０の間にベルトを掛け回すことで、前記電動モータ３により回転円筒体１を回転させるようになっている。The rotating cylinder 1 is rotatably supported by a frame 2.
The rotational drive structure is such that the lower part of the annular rail 12 projecting from the outer periphery of both ends is rotatably supported by two rollers 20 provided on the frame 2, and the pulley 13 provided on the outer periphery and the pulley 30 of the electric motor 3. The rotating cylindrical body 1 is rotated by the electric motor 3 by winding a belt between them.

又、前記回転円筒体１の内面には、投入口１０から排出口１１のやや手前にかけて延在するように複数本（実施例では８本）の持ち上げ板４が等間隔で突設され、回転円筒体１の回転により内部の被攪拌原料を持ち上げて落下させるという攪拌を繰り返させるようになっている。  In addition, a plurality of (eight in the embodiment) lifting plates 4 project from the inner surface of the rotating cylindrical body 1 at equal intervals so as to extend slightly from the inlet 10 to the outlet 11. Stirring in which the material to be stirred is lifted and dropped by the rotation of the cylindrical body 1 is repeated.

なお、図２で示した持ち上げ板４は、断面略Ｌ字状に形成しているが、図４や図５や図６に示すように、断面略Ｔ字状や断面略Ｈ字状や断面略Ｙ字状に形成してもよい。
このように持ち上げ板４を断面略Ｌ字状や断面略Ｔ字状や断面略Ｈ字状や断面略Ｙ字状に形成すると、回転円筒体１の回転により被攪拌原料を回転円筒体１内で上方まで持ち上げて、高所から落すことができ、被攪拌原料を十分に攪拌することができる。The lifting plate 4 shown in FIG. 2 has a substantially L-shaped cross section. However, as shown in FIGS. 4, 5 and 6, the lifting plate 4 has a substantially T-shaped cross section, a substantially H-shaped cross section, and a cross-sectional shape. You may form in a substantially Y shape.
Thus, when the lifting plate 4 is formed in a substantially L-shaped cross section, a substantially T-shaped cross section, a substantially H-shaped cross section, or a substantially Y-shaped cross section, the material to be stirred is rotated in the rotating cylindrical body 1 by the rotation of the rotating cylindrical body 1. Can be lifted up and dropped from a high place, and the raw material to be stirred can be sufficiently stirred.

又、回転円筒体１には、その内部を軸方向に挿通する状態に回転軸５０が軸支され、この回転軸５０にスクリュー羽根５が取り付けられている。
この場合、スクリュー羽根５の外径Ｄ１（実施例では略１５００ｍｍ）は、回転円筒体の持ち上げ板４までの内径Ｄ２（実施例では略２５００ｍｍ）よりも小径（Ｄ１＜Ｄ２）に形成されている。
そして、このスクリュー羽根５の下端が回転円筒体１の内部下方において前記持ち上げ板４に近接するように、前記回転軸５０が回転円筒体１の軸心Ｃから距離Ｌを保持して下方にオフセットした位置に軸支されている。In addition, a rotating shaft 50 is pivotally supported on the rotating cylinder 1 so as to be inserted through the inside of the rotating cylinder 1 in the axial direction, and a screw blade 5 is attached to the rotating shaft 50.
In this case, the outer diameter D1 (approximately 1500 mm in the embodiment) of the screw blade 5 is smaller than the inner diameter D2 (approximately 2500 mm in the embodiment) up to the lifting plate 4 of the rotating cylindrical body (D1 <D2). .
The rotary shaft 50 is offset downward while maintaining the distance L from the axis C of the rotary cylinder 1 so that the lower end of the screw blade 5 is close to the lifting plate 4 in the lower part of the rotary cylinder 1. It is pivotally supported at the position.

前記スクリュー羽根５は、一定高さ（実施例では１００〜２００ｍｍ）の帯状螺旋板５ａにより形成され、この帯状螺旋板５ａが回転軸５０との間に空隙５１を保持するように支持材５２を介して回転軸５０に取り付けられている。  The screw blade 5 is formed by a belt-like spiral plate 5 a having a constant height (100 to 200 mm in the embodiment), and a support material 52 is provided so that the belt-like spiral plate 5 a holds a gap 51 between the rotary shaft 50. It is attached to the rotating shaft 50 via

前記回転軸５０は、その一端が回転円筒体１の投入口１０の外部においてフレーム２に軸支され、他端が篩い円筒体９の終端口９２の外部においてフレーム２に軸支され、この回転軸５０に設けたスプロケット５３と電動モータ５４のプーリ５５の間にチェーンを掛け回すことで、前記電動モータ５４により回転軸５０を回転させ、これによりスクリュー羽根５である帯状螺旋板５ａを回転させて、この帯状螺旋板５ａの回転により被攪拌原料を混合攪拌させながら排出口１１に向けて移動させるように形成されている。  One end of the rotary shaft 50 is pivotally supported by the frame 2 outside the inlet 10 of the rotary cylinder 1, and the other end is pivotally supported by the frame 2 outside the terminal end 92 of the sieve cylinder 9. By rotating the chain between the sprocket 53 provided on the shaft 50 and the pulley 55 of the electric motor 54, the electric motor 54 rotates the rotating shaft 50, thereby rotating the belt-like spiral plate 5a which is the screw blade 5. Thus, the material to be stirred is moved toward the discharge port 11 while being mixed and stirred by the rotation of the belt-like spiral plate 5a.

なお、スクリュー羽根５の回転方向は、前記回転円筒体１の回転方向と同一でもよいし、逆方向でもよい。
又、スクリュー羽根５を回転円筒体１の内部に設けると、回転円筒体１の内部で持ち上げられた被攪拌原料が落下する際に、このスクリュー羽根５に衝突し、その衝撃によって、被攪拌原料の分離を促進させることができる。In addition, the rotation direction of the screw blade 5 may be the same as the rotation direction of the rotating cylindrical body 1 or may be the opposite direction.
Further, when the screw blade 5 is provided inside the rotating cylindrical body 1, when the material to be stirred lifted inside the rotating cylindrical body 1 falls, it collides with the screw blade 5, and the impacted material is caused by the impact. Separation can be promoted.

スクリュー羽根５としては、例えば、回転軸の外周から直接にブレード状の螺旋板を立ち上げたスクリュー軸を用いてもよいが、実施例のように帯状螺旋板５ａを用いると、回転軸５０との間に空隙５１を形成することができ、この空隙５１に風を通すことができるため、乾燥能率を向上させることができる。  As the screw blade 5, for example, a screw shaft in which a blade-like spiral plate is directly raised from the outer periphery of the rotation shaft may be used. However, when the belt-like spiral plate 5a is used as in the embodiment, the rotation shaft 50 and Since the air gap 51 can be formed between the air gaps and air can be passed through the air gap 51, the drying efficiency can be improved.

上記のように、持ち上げ板４及びスクリュー羽根５（帯状螺旋板５ａ）を備えているので、結合した骨材同士を分離させたり、骨材から微粉末を分離させたりするなど、被攪拌原料の各骨材や微粉末をバラバラに分離させ、かつ後述する送風装置６や微粉末吸入装置７による風の当りを良好にさせて乾燥効率を向上させ、かつ被攪拌原料に含まれている微粉末を効率よく浮遊させることができる。  As described above, since the lifting plate 4 and the screw blade 5 (strip-shaped spiral plate 5a) are provided, the aggregated raw materials such as separating the combined aggregates and separating the fine powder from the aggregates are used. Each aggregate and fine powder is separated into pieces, and the air blowing by the air blower 6 and the fine powder suction device 7 described later is improved to improve the drying efficiency, and the fine powder contained in the material to be stirred Can be suspended efficiently.

又、スクリュー羽根５の下端が回転円筒体１の内部下方において持ち上げ板４に近接するように形成されているため、回転円筒体１の内面に付着した被攪拌原料が持ち上げ板４の高さ以上に成長しようとすると、その成長部分をスクリュー羽根５によって掻き取り、それ以上の成長を防止させることができる。  Further, since the lower end of the screw blade 5 is formed so as to be close to the lifting plate 4 below the inside of the rotating cylinder 1, the material to be stirred attached to the inner surface of the rotating cylinder 1 is higher than the height of the lifting plate 4. If it is going to grow, it can scrape off the growth part with the screw blade | wing 5, and can prevent the further growth.

本実施例では、回転円筒体１の投入口１０にスクリューコンベア８配設されている。
このスクリューコンベア８は、上面が開放した樋状体８０と、この樋状体８０の内底部に設けられた螺旋羽根８１とを備え、前記樋状体８０は先端が回転円筒体１の投入口１０に挿入する状態にフレームに取り付けられ、前記螺旋羽根８１は前記回転軸５０の投入口延長軸部分５０ａに設けられている。
従って、被攪拌原料を樋状体８０の内部に上面の開放部から投入させると、回転軸５０の回転に伴い螺旋羽根８１が回転し、この螺旋羽根８１の回転により被攪拌原料が樋状体８０の内部で混合攪拌されながら移送され、投入口１０から回転円筒体１の内部に投入される。
なお、このスクリューコンベア８は必ずしも必要でなく、投入シュート等を用いて被攪拌原料を回転円筒体１の投入口１０から直接に投入してもよい。In the present embodiment, the screw conveyor 8 is disposed at the inlet 10 of the rotating cylindrical body 1.
The screw conveyor 8 includes a bowl-shaped body 80 whose upper surface is open and a spiral blade 81 provided on the inner bottom of the bowl-shaped body 80, and the bowl-shaped body 80 has a tip at the inlet of the rotating cylindrical body 1. The spiral blade 81 is attached to the insertion port extension shaft portion 50 a of the rotating shaft 50.
Therefore, when the raw material to be stirred is introduced into the rod-shaped body 80 from the open portion on the upper surface, the spiral blade 81 rotates with the rotation of the rotating shaft 50, and the raw material to be stirred is rotated by the rotation of the spiral blade 81. It is transferred while being mixed and stirred inside 80, and charged into the inside of the rotating cylindrical body 1 from the charging port 10.
The screw conveyor 8 is not always necessary, and the raw material to be stirred may be directly fed from the charging port 10 of the rotating cylindrical body 1 using a charging chute or the like.

本実施例では、回転円筒体１の内部に風を送り込むための送風装置６が設けられている。
この送風装置６は、ブロア６０から延長したダクト６１の先端に吹き出し口６２が形成され、この吹き出し口６２を投入口１０から回転円筒体１の内部に臨ませることにより、投入口１０から排出口１１に向けて送風するようになっている。
又、送風装置６のダクト６１の途中には、ブロア６０からの風を加熱するための加熱装置６３が設けられており、この加熱装置６３により熱風を回転円筒体１の内部に送風することができ、乾燥効率を向上させることができる。
加熱装置６３の加熱手段としては、ガス燃焼装置や電気ヒータ等を用いることができる。In the present embodiment, an air blower 6 for sending wind into the rotating cylindrical body 1 is provided.
The blower 6 has a blow-out port 62 formed at the tip of a duct 61 extended from the blower 60, and the blow-out port 62 faces the inside of the rotary cylindrical body 1 from the fill-in port 10, so The air is blown toward 11.
A heating device 63 for heating the air from the blower 60 is provided in the middle of the duct 61 of the air blowing device 6, and the hot air can be blown into the rotating cylindrical body 1 by the heating device 63. And the drying efficiency can be improved.
As a heating means of the heating device 63, a gas combustion device, an electric heater, or the like can be used.

前記回転円筒体１の内部で混合攪拌されている被攪拌原料に対し、回転円筒体１の内部空気を吸引することに伴い発生する風を当てると共に、回転円筒体１の内部を浮遊している微粉末を回収するための微粉末吸入装置７が設けられている。
実施例の微粉末吸入装置７は、回転円筒体１とは別体に固定されたもので、図示省略した集塵機に接続した吸引管７０が篩い円筒体９の終端口９２を通して回転円筒体１の内部に挿入され、この吸引管７０の先端に設けた吸入口７１が回転円筒体１の終端部において投入口１０に向けて開口している。While applying the air generated by sucking the internal air of the rotating cylindrical body 1 to the material to be stirred which is mixed and stirred inside the rotating cylindrical body 1, the inside of the rotating cylindrical body 1 is suspended. A fine powder inhaler 7 for collecting fine powder is provided.
The fine powder inhaler 7 of the embodiment is fixed separately from the rotating cylinder 1, and a suction pipe 70 connected to a dust collector (not shown) passes through the end port 92 of the sieving cylinder 9. A suction port 71 inserted inside and provided at the tip of the suction tube 70 opens toward the charging port 10 at the end of the rotating cylindrical body 1.

前記吸入口７１には、回転円筒体１の内部を移行する被攪拌原料（骨材）と干渉せず、回転円筒体１内の微粉末が篩い円筒体９へ移行するのをできるだけ阻止するための邪魔板７２が取り付けられている。
また、この邪魔板７２には、その外周から内向き斜め方向に傾斜板７３が取り付けられ、この傾斜板７３と邪魔板７２とで囲まれた上部空間７６に前記吸入口７１が開口している。
なお、前記邪魔板７２の外周に、回転円筒体１の内周面に接するようにゴム等によるシール部材を取り付けることで、微粉末が回転円筒体１の外部に飛散するのを効果的に阻止することができる。In order to prevent the fine powder in the rotating cylinder 1 from moving to the sieving cylinder 9 as much as possible, the suction port 71 does not interfere with the agitated raw material (aggregate) moving inside the rotating cylinder 1. The baffle plate 72 is attached.
In addition, an inclined plate 73 is attached to the baffle plate 72 in an obliquely inward direction from the outer periphery thereof, and the suction port 71 is opened in an upper space 76 surrounded by the inclined plate 73 and the baffle plate 72. .
In addition, by attaching a sealing member made of rubber or the like on the outer periphery of the baffle plate 72 so as to be in contact with the inner peripheral surface of the rotating cylinder 1, it is possible to effectively prevent fine powder from being scattered outside the rotating cylinder 1. can do.

従って、回転円筒体１を回転させて投入口１０から被攪拌原料を回転円筒体１の内部に投入させると、被攪拌原料は回転円筒体１内においてスクリュー羽根５（帯状螺旋板５ａ）により排出方向に移送されながら、回転円筒体１内において持ち上げ板４とスクリュー羽根５より攪拌が繰り返される。
このような攪拌状態において被攪拌原料は、微粉末吸入装置７による空気の吸引に伴う風を受けることによって乾燥される。Accordingly, when the rotating cylindrical body 1 is rotated and the stirred raw material is introduced into the rotating cylindrical body 1 from the inlet 10, the stirred raw material is discharged in the rotating cylindrical body 1 by the screw blades 5 (band-shaped spiral plate 5 a). While being transferred in the direction, stirring is repeated in the rotating cylindrical body 1 by the lifting plate 4 and the screw blade 5.
In such a stirring state, the material to be stirred is dried by receiving the air accompanying the suction of air by the fine powder inhaler 7.

なお、被攪拌原料が湿っているような場合など、必要に応じて送風装置６を作動させ、この送風装置６からの風を攪拌中の被攪拌原料に当てることにより乾燥を促進させることができる。
この場合、送風する風を加熱装置６３により加熱させると、被攪拌原料に熱風を当てることができ、より一層の乾燥促進ができる。In addition, when the to-be-stirred raw material is wet, drying can be accelerated | stimulated by operating the air blower 6 as needed, and applying the wind from this air-blowing device 6 to the to-be-stirred raw material. .
In this case, when the air to be blown is heated by the heating device 63, the hot air can be applied to the material to be stirred, and further drying can be promoted.

前記回転円筒体１内で攪拌されながら風を受けることで乾燥された被攪拌原料は、引き続き連続して篩い円筒体９の内部に移行し、ここで透孔９０を篩目としてアンダーサイズ骨材とオーバサイズ骨材に篩い選別されるものである。
この篩い円筒体９に移行した被攪拌原料は、上記したように前記回転円筒体１内を通過する間に風を受けて乾燥しているため、被攪拌原料が分離して骨材や微粉末がサラサラの状態になり、透孔９０に目詰まりが生じるのを防止させることができる。The material to be stirred, which has been dried by receiving the air while being stirred in the rotating cylindrical body 1, continuously moves into the inside of the sieving cylindrical body 9, where the undersized aggregate is made with the through holes 90 as the mesh. And sieved to oversize aggregate.
Since the stirring raw material transferred to the sieving cylindrical body 9 is dried by receiving wind while passing through the rotary cylindrical body 1 as described above, the stirring raw material is separated and aggregate or fine powder is separated. Can be prevented from becoming clogged and causing clogging in the through hole 90.

又、被攪拌原料に含まれている微粉末は、被攪拌原料を前記回転円筒体１内で攪拌し、乾燥させることに伴い回転円筒体１内で浮遊させることができ、この浮遊微粉末は微粉末吸入装置７の吸入口７１から吸引され、吸引管７０を経て集塵機に回収される。  The fine powder contained in the raw material to be stirred can be suspended in the rotary cylinder 1 as the raw material to be stirred is stirred in the rotary cylinder 1 and dried. It is sucked from the suction port 71 of the fine powder inhaler 7 and collected by the dust collector through the suction pipe 70.

特に、この実施例では、微粉末吸入装置７の吸入口７１が回転円筒体１の終端部に形成されているため、回転円筒体１内で浮遊する微粉末は、前記微粉末吸入装置７の吸引に伴う風に乗って排出口１１の方向に移行し、回転円筒体１の終端部において吸入口７１に吸引され、効率よく微粉末を回収することができる。
又、送風装置６を使用した場合、この送風装置６が投入口１０から排出口１１に向けて風を送り込むように形成されているため、その送風に微粉末を乗せて排出口１１の方向に移行させることができ、微粉末吸入装置７による回収を、より効率的に行うことができる。In particular, in this embodiment, since the suction port 71 of the fine powder inhaler 7 is formed at the terminal end of the rotary cylinder 1, the fine powder floating in the rotary cylinder 1 is not contained in the fine powder inhaler 7. Riding on the wind accompanying suction and moving toward the discharge port 11, it is sucked into the suction port 71 at the end of the rotating cylindrical body 1, and fine powder can be efficiently recovered.
Further, when the air blower 6 is used, the air blower 6 is formed so as to send air from the inlet 10 toward the outlet 11, so that fine powder is put on the airflow toward the outlet 11. It can be transferred, and the recovery by the fine powder inhaler 7 can be performed more efficiently.

又、回転円筒体１内で浮遊する微粉末は、回転円筒体１の終端部において邪魔板７２により篩い円筒体９への移行が阻止されるもので、その移行が阻止された微粉末は、傾斜板７３に沿って内向きに誘導され、傾斜板７３の先端を回り込むようにして吸入口７１に吸引される。
このように、浮遊する微粉末を回転円筒体１の終端部においてほぼ回収し、回転円筒体１内から篩い円筒体９内への微粉末の移行を阻止することができる。
なお、被攪拌原料から分離し浮遊した微粉末のうち、その殆どは微粉末吸入装置７によって回収されるが、篩い円筒体９の内部に移行し、外部に飛散する微粉末もあり、このような微粉末については、例えば、篩い円筒体９の外部に集塵カバーを取り付け、この集塵カバー内の微粉末を集塵機で回収させるようにしてもよい。Further, the fine powder floating in the rotating cylindrical body 1 is prevented from moving to the sieving cylindrical body 9 by the baffle plate 72 at the end portion of the rotating cylindrical body 1. It is guided inward along the inclined plate 73 and sucked into the suction port 71 so as to go around the tip of the inclined plate 73.
In this manner, the floating fine powder can be almost recovered at the end portion of the rotating cylindrical body 1, and the migration of the fine powder from the rotating cylindrical body 1 into the sieving cylindrical body 9 can be prevented.
Of the fine powder separated from the material to be stirred and suspended, most of the fine powder is collected by the fine powder inhaler 7, but there are fine powders that move to the inside of the sieve cylinder 9 and scatter to the outside. For such fine powder, for example, a dust collection cover may be attached to the outside of the sieve cylinder 9 and the fine powder in the dust collection cover may be collected by a dust collector.

図７は微粉末吸入装置の吸入口の他例を示す断面図である。
この実施例では、回転円筒体１の終端部において、この回転円筒体１の内面に腕材７４を介して円板による邪魔板７５を取り付け、この邪魔板７５に吸入口７１が開口されている。
この場合、邪魔板７５及び吸入口７１は、回転円筒体１の回転と共に回転するため、吸引管７０に回転連結部（ロータリジョイント）を設けるようにしている。
なお、この図７において、持ち上げ板４は断面略く字状に形成されている。FIG. 7 is a sectional view showing another example of the inlet of the fine powder inhaler.
In this embodiment, a baffle plate 75 made of a disk is attached to the inner surface of the rotary cylinder 1 via an arm member 74 at the end of the rotary cylinder 1, and a suction port 71 is opened in the baffle plate 75. .
In this case, the baffle plate 75 and the suction port 71 rotate with the rotation of the rotating cylindrical body 1, and therefore, a rotation connecting portion (rotary joint) is provided in the suction pipe 70.
In FIG. 7, the lifting plate 4 is formed in a substantially letter-shaped cross section.

本発明において、送風装置を排出口から投入四こ向けて風を送り込むように形成することができるし、また、微粉末吸入装置の吸入口を回転円筒体の任意位置に設けることができる。  In the present invention, the air blower can be formed so as to send wind from the discharge port toward the four inlets, and the suction port of the fine powder suction device can be provided at an arbitrary position of the rotating cylindrical body.

又、本発明の回転攪拌装置で処理する被攪拌原料としては、砕石、砕砂、コンクリート廃骨材、泥、土砂、スラッジ、脱水スラッジ、廃棄混合骨材、高炉スラグ骨材等の単体又は混合物のほか、戻り生コンクートに微粉末又は／及び骨材を混合させた戻り生コン混合骨材を対象とすることができる。
特に、前記した戻り生コン混合骨材の処理が可能になるため、戻り生コンクートの処理に際し、戻り生コンクートを水洗処理して骨材を取り出すようにした従来の湿式処理に比べ、その処理作業が極めて簡単になるし処理装置も簡単になる。
なお、本発明の回転攪拌装置は、湿った被攪拌原料に対し有効に適用できるが、既に乾燥している被攪拌原料に適用できるのは勿論である。In addition, as a material to be stirred to be processed by the rotary stirring device of the present invention, crushed stone, crushed sand, concrete waste aggregate, mud, earth and sand, sludge, dewatered sludge, waste mixed aggregate, blast furnace slag aggregate, etc. In addition, the return raw concrete mixed aggregate obtained by mixing fine powder or / and aggregate into the return raw concrete can be used.
In particular, since it is possible to process the above-mentioned return raw concrete mixed aggregate, the processing operation of the return raw concrete is compared with the conventional wet processing in which the return raw concrete is washed to remove the aggregate. It becomes extremely simple and the processing apparatus becomes simple.
In addition, although the rotary stirring apparatus of this invention can be applied effectively with respect to the wet stirred raw material, of course, it can be applied to the already stirred stirred raw material.

本発明に係る回転攪拌装置の実施例を示す側面断面図である。  It is side surface sectional drawing which shows the Example of the rotary stirring apparatus which concerns on this invention. 回転攪拌装置の回転円筒体を示す断面図で、図１のＡ−Ａ断面図である。  It is sectional drawing which shows the rotating cylindrical body of a rotary stirring apparatus, and is AA sectional drawing of FIG. 回転攪拌装置の回転円筒体を示す断面図で、図１のＢ−Ｂ断面図である。  It is sectional drawing which shows the rotation cylindrical body of a rotary stirring apparatus, and is BB sectional drawing of FIG. 持ち上げ板の他例を示す回転円筒体の部分断面図である。  It is a fragmentary sectional view of the rotation cylinder which shows other examples of a lift plate. 持ち上げ板の他例を示す回転円筒体の部分断面図である。  It is a fragmentary sectional view of the rotation cylinder which shows other examples of a lift plate. 持ち上げ板の他例を示す回転円筒体の部分断面図である。  It is a fragmentary sectional view of the rotation cylinder which shows other examples of a lift plate. 微粉末吸入装置の吸入口の他例を示す断面図である。  It is sectional drawing which shows the other examples of the inlet of a fine powder inhaler.

符号の説明Explanation of symbols

１ 回転円筒体
１０ 投入口
１１ 排出口
４ 持ち上げ板
５ スクリュー羽根
５ａ 帯状螺旋板
５０ 回転軸
５０ａ 投入口延長軸部分
５１ 空隙
５２ 支持材
６ 送風装置
６０ ブロア
６２ 吹き出し口
６３ 加熱装置
７ 微粉末吸入装置
７０ 吸引管
７１ 吸入口
８ スクリューコンベア
８０ 樋状体
８１ 螺旋羽根
９ 篩い円筒体
９０ 透孔DESCRIPTION OF SYMBOLS 1 Rotating cylindrical body 10 Input port 11 Discharge port 4 Lifting plate 5 Screw blade 5a Band-shaped spiral plate 50 Rotating shaft 50a Input port extension shaft portion 51 Void 52 Support material 6 Blower 60 Blower 62 Outlet 63 Heating device 7 Fine powder inhaler Reference Signs List 70 suction pipe 71 suction port 8 screw conveyor 80 bowl-shaped body 81 spiral blade 9 sieve cylinder 90 through-hole

Claims (7)

一端に投入口が開口され、他端に排出口が開口された回転円筒体を備え、前記投入口から投入した被攪拌原料を排出口に向けて移動させながら混合攪拌させるようにした回転攪拌装置であって、
前記回転円筒体の内面に、被攪拌原料を持ち上げて落下させるための複数の持ち上げ板が回転円筒体の軸方向に延在する状態で突設され、
前記回転円筒体の内部に軸方向に挿通して軸支された回転軸にスクリュー羽根が設けられると共に、このスクリュー羽根の下端が回転円筒体の内部下方において前記持ち上げ板に近接するように、前記回転軸が回転円筒体の軸心から下方にオフセットした位置で軸支され、
前記スクリュー羽根の回転により被攪拌原料を混合攪拌させながら排出口に向けて移動させるように形成され、
かつ回転円筒体の内部空気を吸引して浮遊微粉末を回収するための微粉末吸入装置を備えていることを特徴とする回転攪拌装置。A rotary stirrer provided with a rotating cylindrical body having an inlet at one end and an outlet at the other end, which is mixed and stirred while moving the material to be stirred charged from the inlet toward the outlet. Because
On the inner surface of the rotating cylinder, a plurality of lifting plates for lifting and dropping the raw material to be stirred are projected in a state extending in the axial direction of the rotating cylinder,
A screw blade is provided on a rotating shaft that is axially inserted into and supported by the inside of the rotating cylinder, and the lower end of the screw blade is close to the lifting plate below the inside of the rotating cylinder. The rotating shaft is pivotally supported at a position offset downward from the axis of the rotating cylindrical body,
It is formed to move toward the discharge port while mixing and stirring the raw material to be stirred by the rotation of the screw blade,
In addition, the rotary agitator is provided with a fine powder inhaler for sucking the internal air of the rotary cylinder and collecting the floating fine powder. 請求項１記載の回転攪拌装置において、前記スクリュー羽根が帯状螺旋板により形成され、この帯状螺旋板が回転軸との間に空隙を保持するように支持材を介して回転軸に取り付けられている回転攪拌装置。  2. The rotary stirring device according to claim 1, wherein the screw blade is formed by a belt-like spiral plate, and the belt-like spiral plate is attached to the rotary shaft via a support member so as to hold a gap between the screw shaft and the rotary shaft. Rotating stirrer. 請求項１又は２記載の回転攪拌装置において、前記回転円筒体の内部に風を送り込むための送風装置が設けられている回転攪拌装置。  The rotary stirring device according to claim 1 or 2, wherein a blower for feeding air into the rotary cylindrical body is provided. 請求項３記載の回転攪拌装置において、前記送風装置には、回転円筒体の内部に送風する風を加熱するための加熱装置が設けられている回転攪拌装置。  4. The rotary stirring device according to claim 3, wherein the blower is provided with a heating device for heating the air blown into the rotary cylindrical body. 請求項３又は４記載の回転攪拌装置において、送風装置は前記回転円筒体の内部に投入口から排出口に向けて風を送り込むように形成され、前記微粉末吸入装置は回転円筒体の終端部に吸入口が形成されている回転攪拌装置。  5. The rotary stirring device according to claim 3 or 4, wherein the blower is formed so as to send air into the rotary cylindrical body from the inlet to the outlet, and the fine powder suction device is an end portion of the rotary cylindrical body. A rotary stirring device in which a suction port is formed. 請求項１〜５のいずれかに記載の回転攪拌装置において、上面が開放した樋状体と、この樋状体の内底部に設けられた螺旋羽根とを備えたスクリューコンベアが前記回転円筒体の投入口に配設され、前記樋状体は先端が回転円筒体の投入口に挿入する状態にフレームに取り付けられ、前記螺旋羽根は前記回転軸の投入口延長軸部分に設けられている回転攪拌装置。  The rotary stirring device according to any one of claims 1 to 5, wherein a screw conveyor including a bowl-shaped body having an open upper surface and a spiral blade provided on an inner bottom portion of the bowl-shaped body is the rotary cylinder body. Rotating stirrer provided at the inlet, the rod-like body is attached to the frame so that the tip is inserted into the inlet of the rotary cylinder, and the spiral blade is provided at the inlet extension shaft portion of the rotary shaft apparatus. 請求項１〜６のいずれかに記載の回転攪拌装置において、前記回転円筒体の終端に、周壁に多数の透孔が形成された篩い円筒体が一体に連結されている回転攪拌装置。  The rotary stirring apparatus according to any one of claims 1 to 6, wherein a sieving cylindrical body having a plurality of through holes formed in a peripheral wall is integrally connected to an end of the rotary cylindrical body.
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