JP2021107059A - Grout material mixing device - Google Patents

Grout material mixing device Download PDF

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JP2021107059A
JP2021107059A JP2019239232A JP2019239232A JP2021107059A JP 2021107059 A JP2021107059 A JP 2021107059A JP 2019239232 A JP2019239232 A JP 2019239232A JP 2019239232 A JP2019239232 A JP 2019239232A JP 2021107059 A JP2021107059 A JP 2021107059A
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stirring blade
tank
mixing
shaft
stirring
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JP7452839B2 (en
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啓一 蔭山
Keiichi Kageyama
啓一 蔭山
雅文 宮川
Masafumi Miyagawa
雅文 宮川
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Koken Boring Machine Co Ltd
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Koken Boring Machine Co Ltd
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Abstract

To provide a grout material mixing device which can agitate a raw material with good efficiency.SOLUTION: This mixing device comprises: a drive shaft 13 which comprises a double pipe in which an inner shaft 15 is inserted in an outer shaft 14, and penetrates a tank bottom surface of a mixing tank 3; a first motor 61 for rotating the inner shaft 15 in one direction, and a second motor 62 for rotating the outer shaft 14 in a direction opposite to the inner shaft 15; an outside agitation blade 20 which is attached to the inner shaft 15, and is rotationally driven in one direction; an inside agitation blade 40 which is attached to the outer shaft 14, and is rotationally driven in the opposite direction; outside agitation plates 23, 33 which are provided on the outside agitation blade 20, and agitate a raw material so that the raw material flow to an inner peripheral side of the tank bottom surface; and an inside agitation plate 43 which is provided on the inside agitation blade 40, and agitates the raw material so that the raw material flows to an outer peripheral side of the tank bottom surface.SELECTED DRAWING: Figure 8

Description

本発明は、セメントと水とを混合してグラウト材を作製するミキシング装置に関し、特にグラウト材の混合を効率良く行うことができ、これにより大量のグラウト材を作製するために好適に使用することができるミキシング装置に関する。 The present invention relates to a mixing device for producing a grout material by mixing cement and water, and in particular, it is possible to efficiently mix the grout material, and thereby it is suitably used for producing a large amount of grout material. Regarding a mixing device that can be used.

特許文献１には、セメント等の粉体と水等の液体とからなる原材料を混合してペースト状の混合物とするためのミキシング装置が開示されている。このミキシング装置は、原材料を混合する混合槽を有し、混合槽に二重管からなる駆動軸を貫通させている。駆動軸の外側軸には外側撹拌羽根を取り付ける一方、内側軸には内側撹拌羽根を取り付け、これらを同じ方向に回転させるものであり、外側撹拌羽根（外側軸）を低速回転、内側撹拌羽根（内側軸）を高速回転させている。このミキシング装置では、駆動源として単一のモータを用い、ギヤ比を変更することにより高速回転及び低速回転を得ている。 Patent Document 1 discloses a mixing device for mixing a raw material composed of a powder such as cement and a liquid such as water into a paste-like mixture. This mixing device has a mixing tank for mixing raw materials, and a drive shaft composed of a double pipe is passed through the mixing tank. The outer stirring blade is attached to the outer shaft of the drive shaft, while the inner stirring blade is attached to the inner shaft and these are rotated in the same direction. The inner shaft) is rotating at high speed. In this mixing device, a single motor is used as a drive source, and high-speed rotation and low-speed rotation are obtained by changing the gear ratio.

外側撹拌羽根及び内側撹拌羽根には、混合槽の内面に沿って移動する外側撹拌板及び内側撹拌板がそれぞれ設けられている。混合槽は底部の中心部分が山形状、底部の周辺部分が斜めに立ち上がる傾斜形状となっており、外側撹拌羽根の外側撹拌板及び内側撹拌羽根の内側撹拌板はこれらの形状に沿って「く」字形に屈曲した横長の平板が使用されている。 The outer stirring blade and the inner stirring blade are provided with an outer stirring plate and an inner stirring plate that move along the inner surface of the mixing tank, respectively. The mixing tank has a mountain shape at the center of the bottom and an inclined shape at which the peripheral part of the bottom rises diagonally. A horizontally long flat plate bent into a "shape" is used.

特開昭５９−４４２６号公報JP-A-59-4426

しかしながら、特許文献１に開示されている従来のミキシング装置においては、屈曲した平板からなる外側撹拌板及び内側撹拌板は原材料を押して移動させるようにだけ動作するものであり、原材料を良好に撹拌することができない問題がある。
又、撹拌を良好に行うためには、外側撹拌板及び内側撹拌板を混合槽の底部の全面にわたって移動させる必要がある。このためこれらの外側撹拌板及び内側撹拌板が長くなり、これらを有する外側撹拌羽根及び内側撹拌羽根自体が大きくなって取り扱い性が低下する問題も有している。
さらに外側撹拌羽根及び内側撹拌羽根が大きくなることにより、これらが重たくなって大きな回転力が必要となり、モータを大出力とする必要が生じる。 However, in the conventional mixing device disclosed in Patent Document 1, the outer stirring plate and the inner stirring plate made of a bent flat plate operate only to push and move the raw material, and the raw material is satisfactorily agitated. There is a problem that cannot be done.
Further, in order to perform good stirring, it is necessary to move the outer stirring plate and the inner stirring plate over the entire bottom surface of the mixing tank. Therefore, there is a problem that the outer stirring plate and the inner stirring plate become long, and the outer stirring blade and the inner stirring blade itself having them become large and the handleability deteriorates.
Further, as the outer stirring blade and the inner stirring blade become larger, they become heavier and require a large rotational force, which makes it necessary to increase the output of the motor.

本発明は、このような従来の問題点を解決するためになされたものであり、原材料の撹拌を効率良く行うことが可能なグラウト材用ミキシング装置を提供することを目的とする。 The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a mixing device for grout materials capable of efficiently stirring raw materials.

本発明は、セメントと水とからなる原材料を混合槽内で混合してグラウト材を作製するミキシング装置であって、前記混合槽に設けられた円形平板からなる槽底面及び槽底面の外周側の一部を開閉するシャッター板と、外側軸に内側軸が挿入された二重管からなり前記槽底面を貫通した駆動軸と、前記混合槽の外側に配置され、前記内側軸を一方向に回転させる第１モータ及び前記外側軸を内側軸と逆方向に回転させる第２モータからなる駆動手段と、前記内側軸に取り付けられて前記一方向に回転駆動される外側撹拌羽根と、前記外側軸に取り付けられて前記逆方向に回転駆動される内側撹拌羽根と、前記外側撹拌羽根に設けられ、前記原材料が前記槽底面の内周側に流動するように撹拌する外側撹拌板と、前記内側撹拌羽根に設けられ、前記原材料が前記槽底面の外周側に流動するように撹拌する内側撹拌板と、を備えていることを特徴とする。 The present invention is a mixing device for producing a grout material by mixing raw materials composed of cement and water in a mixing tank, and the bottom surface of the tank and the outer peripheral side of the bottom surface of the tank made of a circular flat plate provided in the mixing tank. A shutter plate that partially opens and closes, a drive shaft that is composed of a double pipe with an inner shaft inserted into the outer shaft and penetrates the bottom surface of the tank, and a drive shaft that is arranged outside the mixing tank and rotates the inner shaft in one direction. A driving means including a first motor for causing the outer shaft to rotate in the direction opposite to the inner shaft, an outer stirring blade attached to the inner shaft and driven to rotate in the same direction, and the outer shaft. An inner stirring blade that is attached and rotationally driven in the opposite direction, an outer stirring plate that is provided on the outer stirring blade and stirs the raw material so as to flow toward the inner peripheral side of the bottom surface of the tank, and the inner stirring blade. It is characterized in that it is provided with an inner stirring plate that stirs the raw material so as to flow to the outer peripheral side of the bottom surface of the tank.

本発明では、前記外側撹拌羽根は、前記槽底面の最外周に沿って回転駆動されるメイン撹拌羽根と、前記槽底面の最外周よりも内側に沿って回転駆動されるサブ撹拌羽根とを備え、前記メイン撹拌羽根及びサブ撹拌羽根に前記外側撹拌板が設けられていることを特徴とする。
又、前記メイン撹拌羽根の外側撹拌板は、前記シャッター板上を通過する位置となるように設けられていることを特徴とする。
又、上部から下部に向かって広がる傘形状のカッターを内部に備えたホッパーユニットが前記混合槽と連通した状態で混合槽の上部に取り付けられていることを特徴とする。 In the present invention, the outer stirring blade includes a main stirring blade that is rotationally driven along the outermost circumference of the bottom surface of the tank, and a sub stirring blade that is rotationally driven along the innermost circumference of the bottom surface of the tank. The main stirring blade and the sub stirring blade are provided with the outer stirring plate.
Further, the outer stirring plate of the main stirring blade is provided so as to pass over the shutter plate.
Further, a hopper unit having an umbrella-shaped cutter that extends from the upper part to the lower part is attached to the upper part of the mixing tank in a state of communicating with the mixing tank.

本発明によれば、外側撹拌羽根の外側撹拌板が原材料を槽底面の内周側に流動させ、外側撹拌羽根の内側撹拌板が原材料を槽底面の外周側に流動させるため、原材料を効率良く良好に撹拌することができる。又、外側撹拌板及び内側撹拌板を長くする必要がないため、外側撹拌羽根及び内側撹拌羽根を大きくする必要がなく、取り扱い性が良好となると共に、これらを駆動するモータの出力を大きく必要としない。 According to the present invention, the outer stirring plate of the outer stirring blade causes the raw material to flow to the inner peripheral side of the bottom surface of the tank, and the inner stirring plate of the outer stirring blade causes the raw material to flow to the outer peripheral side of the bottom surface of the tank, so that the raw material can be efficiently flowed. It can be stirred well. Further, since it is not necessary to lengthen the outer stirring plate and the inner stirring plate, it is not necessary to increase the size of the outer stirring blade and the inner stirring blade, which improves the handleability and requires a large output of the motor for driving them. do not.

ミキシング装置全体の正面図である。It is a front view of the whole mixing apparatus. ミキシング装置全体の右側面図である。It is a right side view of the whole mixing apparatus. ミキシング装置全体の左側面図である。It is a left side view of the whole mixing apparatus. 駆動手段の配置を示す平面図である。It is a top view which shows the arrangement of the drive means. 混合槽の構造を示す断面図である。It is sectional drawing which shows the structure of a mixing tank. 図５の右側面図である。It is a right side view of FIG. 混合槽の内部を示す正面図である。It is a front view which shows the inside of a mixing tank. 混合槽の内部を示す平面図である。It is a top view which shows the inside of a mixing tank. 混合槽の排出部分を示すShows the discharge part of the mixing tank

図１〜図３は、本発明の一実施形態のミキシング装置１の全体を示す。
複数本の鉄筋を組み付けることにより支持架台２が形成され、この支持架台２に混合槽３、ホッパーユニット４が上下に固定されて組み付けられている。混合槽３は底部の槽底面５と、槽底面５からボックス状となって立ち上がった槽ハウジング６とによって形成されており、内部にセメントと水とが供給されることによりこれらの原材料を混合してペースト状のグラウト材を作製する。 1 to 3 show the entire mixing device 1 according to the embodiment of the present invention.
The support pedestal 2 is formed by assembling a plurality of reinforcing bars, and the mixing tank 3 and the hopper unit 4 are fixed and assembled to the support pedestal 2. The mixing tank 3 is formed by a tank bottom surface 5 at the bottom and a tank housing 6 that rises from the bottom surface 5 in a box shape, and these raw materials are mixed by supplying cement and water to the inside. To prepare a paste-like grout material.

ホッパーユニット４は供給シュート７を間に挟んだ状態で混合槽３の上部に位置するように支持架台２に取り付けられる。ホッパーユニット４は混合槽３と連通することによりセメントを混合槽３に投入する。ホッパーユニット４の内部には、カッター８が設けられている。カッター８は上部から下部に向かって広がる傘形状となっており、このカッター８にセメント袋（図示省略）が押し付けられることによりセメント袋を破断し、これによりセメント袋内部のセメントが供給シュート７を介して混合槽３に落下して投入される。ホッパーユニット４の頂部には、蓋体９が着脱自在に被せられており、破断したセメント袋から出たセメントの周囲への飛散を防止している。水は図示を省略したホース等によって混合槽３に供給される。
なお、ホッパーユニット４を設けることなく、セメント袋の袋口を開口して混合槽３に直接にセメントを投入しても良い。 The hopper unit 4 is attached to the support pedestal 2 so as to be located above the mixing tank 3 with the supply chute 7 sandwiched between them. The hopper unit 4 communicates with the mixing tank 3 to charge cement into the mixing tank 3. A cutter 8 is provided inside the hopper unit 4. The cutter 8 has an umbrella shape that extends from the upper part to the lower part, and the cement bag (not shown) is pressed against the cutter 8 to break the cement bag, whereby the cement inside the cement bag supplies the chute 7. It falls into the mixing tank 3 through the mixture and is charged. A lid 9 is detachably covered on the top of the hopper unit 4 to prevent the cement from the broken cement bag from scattering around. Water is supplied to the mixing tank 3 by a hose or the like (not shown).
It should be noted that the cement may be directly poured into the mixing tank 3 by opening the bag mouth of the cement bag without providing the hopper unit 4.

次に、混合槽３の構造を図４〜図９により説明する。
図８に示すように、混合槽３の槽底面５は円形平板によって形成されている。円形平板の槽底面５の外周側には、混合槽３を開閉するためのシャッター板１０が設けられている。シャッター板１０は槽底面５の一部を構成した平板からなり、図９に示す開閉機構１１によって開閉動作する。
図９に示すように、開閉機構１１は槽ハウジング６との隣接位置に配置された開閉用シリンダ１２を備えており、この開閉用シリンダ１２のピストン１２ａにシャッター板１０が連結されている。開閉用シリンダ１２は支持架台２に左右揺動可能に取り付けられており、ピストン１２ａの伸縮と共に揺動する。そして槽ハウジング６から離れる方向への揺動によりシャッター板１０が槽底面５から離れる方向に移動して槽底面５を開放する。この開放は、開閉用シリンダ１２により段階的に開放度合いが調整されるようになっている。 Next, the structure of the mixing tank 3 will be described with reference to FIGS. 4 to 9.
As shown in FIG. 8, the bottom surface 5 of the mixing tank 3 is formed of a circular flat plate. A shutter plate 10 for opening and closing the mixing tank 3 is provided on the outer peripheral side of the bottom surface 5 of the circular flat plate. The shutter plate 10 is made of a flat plate forming a part of the bottom surface 5 of the tank, and is opened and closed by the opening / closing mechanism 11 shown in FIG.
As shown in FIG. 9, the opening / closing mechanism 11 includes an opening / closing cylinder 12 arranged at a position adjacent to the tank housing 6, and the shutter plate 10 is connected to the piston 12a of the opening / closing cylinder 12. The opening / closing cylinder 12 is attached to the support pedestal 2 so as to swing left and right, and swings as the piston 12a expands and contracts. Then, the shutter plate 10 moves in the direction away from the tank bottom surface 5 due to the swing in the direction away from the tank housing 6, and the tank bottom surface 5 is opened. The degree of opening is adjusted stepwise by the opening / closing cylinder 12.

図９に示すように、シャッター板１０の下方には、排出ガイド１８が設けられており、排出ガイド１８に対応して排出シュート１６が設けられている。排出シュート１６の出口部分には、自走式或いは牽引式の搬送台車１７が配置される（図３参照）。混合槽３内で原材料が混合されて作製されたグラウト材はシャッター板１０から排出シュート１６に排出され、排出シュート１６から搬送台車１７に移されて作業現場に搬送される。 As shown in FIG. 9, a discharge guide 18 is provided below the shutter plate 10, and a discharge chute 16 is provided corresponding to the discharge guide 18. A self-propelled or towed transport carriage 17 is arranged at the exit portion of the discharge chute 16 (see FIG. 3). The grout material produced by mixing the raw materials in the mixing tank 3 is discharged from the shutter plate 10 to the discharge chute 16, transferred from the discharge chute 16 to the transport carriage 17, and transported to the work site.

図４〜図９に示すように、混合槽３の内部には、駆動軸１３、外側撹拌羽根２０、内側撹拌羽根４０が設けられ、混合槽３の外部には、駆動手段６０が設けられている。 As shown in FIGS. 4 to 9, a drive shaft 13, an outer stirring blade 20, and an inner stirring blade 40 are provided inside the mixing tank 3, and a driving means 60 is provided outside the mixing tank 3. There is.

駆動軸１３は図５及び図９に示すように、槽底面５の中央部分を貫通して設けられる。駆動軸１３は外側撹拌羽根２０及び内側撹拌羽根４０を回転駆動する部材であり、筒状の外側軸１４の内部に中実の内側軸１５が挿入された二重管によって形成されている。駆動軸１３は軸ケース１３ａ内に回転可能に支持されている。駆動軸１３における外側軸１４には内側撹拌羽根４０が取り付けられ、内側軸１５には外側撹拌羽根２０が取り付けられている。 As shown in FIGS. 5 and 9, the drive shaft 13 is provided so as to penetrate the central portion of the bottom surface 5 of the tank. The drive shaft 13 is a member that rotationally drives the outer stirring blade 20 and the inner stirring blade 40, and is formed by a double pipe in which a solid inner shaft 15 is inserted inside the tubular outer shaft 14. The drive shaft 13 is rotatably supported in the shaft case 13a. An inner stirring blade 40 is attached to the outer shaft 14 of the drive shaft 13, and an outer stirring blade 20 is attached to the inner shaft 15.

図４及び図６に示すように、駆動手段６０は混合槽３の下側の支持架台２に横並びで配置された第１モータ６１及び第２モータ６２によって形成されている。第１モータ６１は内側軸１５に直結されて内側軸１５を一方向に回転させる。第２モータ６２はギヤ６３及びチェーン６４（図６参照）を介して外側軸１４に連結されて外側軸１４を内側軸１５との逆方向に回転させる。これにより外側撹拌羽根２０と内側撹拌羽根４０とが反対方向に回転駆動される。
このように外側撹拌羽根２０及び内側撹拌羽根４０を別個のモータ６１、６２によって回転駆動する構造では、外側撹拌羽根２０及び内側撹拌羽根４０の回転速度を任意に調整することが容易となる。又、それぞれのモータ６１、６２への負荷を軽減させることができるため、故障を抑制でき、メンテナンスが簡単となる。 As shown in FIGS. 4 and 6, the drive means 60 is formed by the first motor 61 and the second motor 62 arranged side by side on the support pedestal 2 on the lower side of the mixing tank 3. The first motor 61 is directly connected to the inner shaft 15 and rotates the inner shaft 15 in one direction. The second motor 62 is connected to the outer shaft 14 via a gear 63 and a chain 64 (see FIG. 6) to rotate the outer shaft 14 in the direction opposite to the inner shaft 15. As a result, the outer stirring blade 20 and the inner stirring blade 40 are rotationally driven in opposite directions.
In such a structure in which the outer stirring blade 20 and the inner stirring blade 40 are rotationally driven by separate motors 61 and 62, it becomes easy to arbitrarily adjust the rotational speeds of the outer stirring blade 20 and the inner stirring blade 40. Further, since the load on the respective motors 61 and 62 can be reduced, failure can be suppressed and maintenance becomes easy.

図７及び図８に示すように、この実施形態では内側撹拌羽根４０は２本、外側撹拌羽根２０は４本が使用される。なお、後述するように、外側撹拌羽根２０は２本のメイン撹拌羽根２１と、２本のサブ撹拌羽根３１とによって形成されるものである。 As shown in FIGS. 7 and 8, in this embodiment, two inner stirring blades 40 and four outer stirring blades 20 are used. As will be described later, the outer stirring blade 20 is formed by two main stirring blades 21 and two sub stirring blades 31.

図７〜図９に示すように、それぞれの内側撹拌羽根４０は、外側軸１４に取り付けられた連結アーム４２と、連結アーム４２の先端部に取り付けられた内側撹拌板４３とを有している。内側撹拌板４３は駆動軸１３の周囲近辺に位置するようにセットされて槽底面５の内周側を移動し、槽底面５の内周側に存在する原材料を撹拌する。 As shown in FIGS. 7 to 9, each inner stirring blade 40 has a connecting arm 42 attached to the outer shaft 14 and an inner stirring plate 43 attached to the tip end portion of the connecting arm 42. .. The inner stirring plate 43 is set so as to be located near the periphery of the drive shaft 13 and moves on the inner peripheral side of the tank bottom surface 5, and agitates the raw materials existing on the inner peripheral side of the tank bottom surface 5.

内側撹拌羽根４０に対し、外側撹拌羽根２０（メイン撹拌羽根２１及びサブ撹拌羽根３１）は、駆動軸１３から離れた位置で回転して槽底面５の外周側に存在する原材料を撹拌する。メイン撹拌羽根２１及びサブ撹拌羽根３１は内側軸１５にそれぞれ取り付けられて槽底面５の外周側に延びる連結アーム２２、３２と、それぞれの連結アーム２２、３２の先端部に取り付けられた外側撹拌板２３、３３とを有している。上述したように、外側撹拌羽根２０（メイン撹拌羽根２１及びサブ撹拌羽根３１）と内側撹拌羽根４０とは反対方向に回転駆動されるものである。 With respect to the inner stirring blade 40, the outer stirring blade 20 (main stirring blade 21 and sub stirring blade 31) rotates at a position away from the drive shaft 13 to agitate the raw materials existing on the outer peripheral side of the bottom surface 5 of the tank. The main stirring blade 21 and the sub stirring blade 31 are attached to the inner shaft 15 and extend to the outer peripheral side of the bottom surface of the tank 5, respectively, and the outer stirring plate attached to the tip of each of the connecting arms 22 and 32. It has 23 and 33. As described above, the outer stirring blade 20 (main stirring blade 21 and sub stirring blade 31) and the inner stirring blade 40 are rotationally driven in opposite directions.

メイン撹拌羽根２１の連結アーム２２はサブ撹拌羽根３１の連結アーム３３よりも長くなっており、これによりメイン撹拌羽根２１は槽底面５の最外周に沿って回転駆動される。このようにメイン撹拌羽根２１が槽底面５の最外周に沿って回転駆動されることにより、メイン撹拌羽根２１の外側撹拌板２３はシャッター板１０上を通過する。このようなメイン撹拌羽根２１は原材料を撹拌するのに加えて、シャッター板１０を通過するときにグラウト材がシャッター板１０から落下するようにも作用する。これによりグラウト材を迅速に排出させることができる。
サブ撹拌羽根３１は以上のメイン撹拌羽根２１に対し、槽底面５の最外周よりも内側に沿って回転駆動される。 The connecting arm 22 of the main stirring blade 21 is longer than the connecting arm 33 of the sub stirring blade 31, whereby the main stirring blade 21 is rotationally driven along the outermost periphery of the bottom surface 5 of the tank. As the main stirring blade 21 is rotationally driven along the outermost circumference of the bottom surface 5 of the tank in this way, the outer stirring plate 23 of the main stirring blade 21 passes over the shutter plate 10. In addition to stirring the raw material, the main stirring blade 21 also acts to cause the grout material to fall from the shutter plate 10 as it passes through the shutter plate 10. As a result, the grout material can be discharged quickly.
The sub-stirring blade 31 is rotationally driven with respect to the main stirring blade 21 along the inner side of the outermost circumference of the bottom surface 5 of the tank.

この実施形態において、内側撹拌羽根４０の内側撹拌板４３、メイン撹拌羽根２１の外側撹拌板２３及びサブ撹拌羽根３１の外側撹拌板３３は、槽底面５の半径の１／３程度の長さとなった台形々状の小型の撹拌駒が使用されており、槽底面５の略半径の長さを有するような長尺な平板を用いるものではない。
図７に示すように、内側撹拌羽根４０の内側撹拌板４３、メイン撹拌羽根２１の外側撹拌板２３及びサブ撹拌羽根３１の外側撹拌板３３は、回転方向の先端面４３ａ、２３ａ、３３ａの上部が後ろ側に傾斜した形状となっている。このような形状とすることにより、原材料は下から上に向かって押し上げられて撹拌板４３、２３、３３を乗り越えるように流動するため、撹拌を良好に行うことができる。 In this embodiment, the inner stirring plate 43 of the inner stirring blade 40, the outer stirring plate 23 of the main stirring blade 21, and the outer stirring plate 33 of the sub stirring blade 31 have a length of about 1/3 of the radius of the bottom surface 5 of the tank. A small trapezoidal agitating piece is used, and a long flat plate having a length of approximately the radius of the bottom surface 5 of the tank is not used.
As shown in FIG. 7, the inner stirring plate 43 of the inner stirring blade 40, the outer stirring plate 23 of the main stirring blade 21, and the outer stirring plate 33 of the sub stirring blade 31 are the upper portions of the tip surfaces 43a, 23a, 33a in the rotational direction. Has a shape that is inclined to the rear side. With such a shape, the raw material is pushed up from the bottom to the top and flows so as to get over the stirring plates 43, 23, 33, so that stirring can be performed satisfactorily.

そして、図８に示すように、メイン撹拌羽根２１の外側撹拌板２３及びサブ撹拌羽根３１の外側撹拌板３３は、原材料が槽底面５の内周側に流動するように傾いて取り付けられているのに対し、内側撹拌羽根４０の内側撹拌板４３は原材料が槽底面５の外周側に流動するように傾いて設けられている。
図８において、矢印Ｒ１はメイン撹拌羽根２１及びサブ撹拌羽根３１の外側撹拌板２３、３３が原材料を流動させる方向、矢印Ｒ２は内側撹拌羽根４０の内側撹拌板４３が原材料を流動させる方向であり、メイン撹拌羽根２１の外側撹拌板２３及びサブ撹拌羽根３１の外側撹拌板３３は、槽底面５に対し原材料を下から上に向かって押し上げるため所定の角度で傾斜しており、また、平面視で、原材料を押し上げる面が円周方向ではなく、駆動軸の中心方向を向くように傾斜しており、内側撹拌羽根４０の内側撹拌板４３は、槽底面５に対し原材料を下から上に向かって押し上げるため所定の角度で傾斜しており、また、平面視で、原材料を押し上げる面が円周方向ではなく、外周方向を向くように傾斜させており、上述した原材料の流動が可能となっている。
これに加えて、メイン撹拌羽根２１及びサブ撹拌羽根３１と、内側撹拌羽根４０とは反対方向に回転駆動されるため、原材料が混じり合うことができ効率的に撹拌させることができる。 Then, as shown in FIG. 8, the outer stirring plate 23 of the main stirring blade 21 and the outer stirring plate 33 of the sub stirring blade 31 are attached so as to be inclined so that the raw materials flow toward the inner peripheral side of the bottom surface 5 of the tank. On the other hand, the inner stirring plate 43 of the inner stirring blade 40 is provided so as to be inclined so that the raw material flows toward the outer peripheral side of the bottom surface 5 of the tank.
In FIG. 8, the arrow R1 is the direction in which the outer stirring plates 23 and 33 of the main stirring blade 21 and the sub stirring blade 31 flow the raw material, and the arrow R2 is the direction in which the inner stirring plate 43 of the inner stirring blade 40 flows the raw material. The outer stirring plate 23 of the main stirring blade 21 and the outer stirring plate 33 of the sub stirring blade 31 are inclined at a predetermined angle with respect to the bottom surface 5 of the tank in order to push up the raw materials from the bottom to the top, and are also viewed in a plan view. The surface that pushes up the raw material is inclined so as to face the central direction of the drive shaft instead of the circumferential direction, and the inner stirring plate 43 of the inner stirring blade 40 directs the raw material from the bottom to the top with respect to the bottom surface 5 of the tank. It is tilted at a predetermined angle to push it up, and in a plan view, the surface that pushes up the raw material is tilted so that it faces the outer peripheral direction instead of the circumferential direction, enabling the above-mentioned flow of the raw material. There is.
In addition to this, since the main stirring blade 21 and the sub stirring blade 31 are rotationally driven in the opposite directions to the inner stirring blade 40, the raw materials can be mixed and the stirring can be performed efficiently.

このような構造では、メイン撹拌羽根２１、サブ撹拌羽根３１及び内側撹拌羽根４０によって原材料を効率良く良好に撹拌することができる。又、メイン撹拌羽根２１及びサブ撹拌羽根３１の外側撹拌板２２、３３や内側撹拌羽根４０の内側撹拌板４３を長くする必要がないため、メイン撹拌羽根２１、サブ撹拌羽根３１及び内側撹拌羽根４０を大きくする必要がなく、取り扱い性が良好となると共に、駆動源６０のモータ６１、６２の出力を大きく必要としない。 In such a structure, the raw material can be efficiently and satisfactorily stirred by the main stirring blade 21, the sub stirring blade 31, and the inner stirring blade 40. Further, since it is not necessary to lengthen the outer stirring plates 22 and 33 of the main stirring blade 21 and the sub stirring blade 31 and the inner stirring plate 43 of the inner stirring blade 40, the main stirring blade 21, the sub stirring blade 31 and the inner stirring blade 40 It is not necessary to increase the size, the handleability is improved, and the outputs of the motors 61 and 62 of the drive source 60 are not required to be large.

以上の実施形態では、メイン撹拌羽根２１及びサブ撹拌羽根３１によって外側撹拌羽根２０を形成しているが、メイン撹拌羽根２１だけで外側撹拌羽根２０を形成しても良い。 In the above embodiment, the outer stirring blade 20 is formed by the main stirring blade 21 and the sub stirring blade 31, but the outer stirring blade 20 may be formed only by the main stirring blade 21.

１ ミキシング装置
３ 混合槽
４ ホッパーユニット
５ 槽底面
８ カッター
１０ シャッター板
１３ 駆動軸
１４ 内側軸
１５ 外側軸
２０ 外側撹拌羽根
２１ メイン撹拌羽根
２３、３３ 外側撹拌板
３１ サブ撹拌羽根
４０ 内側撹拌羽根
４３ 内側撹拌板
６０ 駆動手段
６１ 第１モータ
６２ 第２モータ 1 Mixing device 3 Mixing tank 4 Hopper unit 5 Tank bottom 8 Cutter 10 Shutter plate 13 Drive shaft 14 Inner shaft 15 Outer shaft 20 Outer stirring blade 21 Main stirring blade 23, 33 Outer stirring plate 31 Sub stirring blade 40 Inner stirring blade 43 Inside Stirrer plate 60 Drive means 61 1st motor 62 2nd motor

Claims (4)

セメントと水とからなる原材料を混合槽内で混合してグラウト材を作製するミキシング装置であって、
前記混合槽に設けられた円形平板からなる槽底面及び槽底面の外周側の一部を開閉するシャッター板と、
外側軸に内側軸が挿入された二重管からなり前記槽底面を貫通した駆動軸と、
前記混合槽の外側に配置され、前記内側軸を一方向に回転させる第１モータ及び前記外側軸を内側軸と逆方向に回転させる第２モータからなる駆動手段と、
前記内側軸に取り付けられて前記一方向に回転駆動される外側撹拌羽根と、
前記外側軸に取り付けられて前記逆方向に回転駆動される内側撹拌羽根と、
前記外側撹拌羽根に設けられ、前記原材料が前記槽底面の内周側に流動するように撹拌する外側撹拌板と、
前記内側撹拌羽根に設けられ、前記原材料が前記槽底面の外周側に流動するように撹拌する内側撹拌板と、
を備えていることを特徴とするグラウト材用ミキシング装置。 A mixing device that produces grout materials by mixing raw materials consisting of cement and water in a mixing tank.
A shutter plate that opens and closes a part of the bottom surface of the tank and the outer peripheral side of the bottom surface of the tank made of a circular flat plate provided in the mixing tank.
A drive shaft consisting of a double pipe with an inner shaft inserted into the outer shaft and penetrating the bottom surface of the tank,
A driving means including a first motor which is arranged outside the mixing tank and rotates the inner shaft in one direction and a second motor which rotates the outer shaft in the opposite direction to the inner shaft.
An outer stirring blade attached to the inner shaft and rotationally driven in the same direction,
An inner stirring blade attached to the outer shaft and rotationally driven in the opposite direction,
An outer stirring plate provided on the outer stirring blade and agitating the raw material so as to flow toward the inner peripheral side of the bottom surface of the tank.
An inner stirring plate provided on the inner stirring blade and stirring so that the raw material flows to the outer peripheral side of the bottom surface of the tank.
A mixing device for grout materials, which is characterized by being equipped with. 前記外側撹拌羽根は、前記槽底面の最外周に沿って回転駆動されるメイン撹拌羽根と、前記槽底面の最外周よりも内側に沿って回転駆動されるサブ撹拌羽根とを備え、前記メイン撹拌羽根及びサブ撹拌羽根に前記外側撹拌板が設けられていることを特徴とする請求項１記載のグラウト材用ミキシング装置。 The outer stirring blade includes a main stirring blade that is rotationally driven along the outermost periphery of the bottom surface of the tank, and a sub stirring blade that is rotationally driven along the innermost circumference of the bottom surface of the tank. The mixing device for a grout material according to claim 1, wherein the blade and the sub-stirring blade are provided with the outer stirring plate. 前記メイン撹拌羽根の外側撹拌板は、前記シャッター板上を通過する位置となるように設けられていることを特徴とする請求項２記載のグラウト材用ミキシング装置。 The mixing device for grout material according to claim 2, wherein the outer stirring plate of the main stirring blade is provided so as to pass over the shutter plate. 上部から下部に向かって広がる傘形状のカッターを内部に備えたホッパーユニットが前記混合槽と連通した状態で混合槽の上部に取り付けられていることを特徴とする請求項１記載のグラウト材用ミキシング装置。 The mixing for grout material according to claim 1, wherein a hopper unit having an umbrella-shaped cutter extending from the upper part to the lower part is attached to the upper part of the mixing tank in a state of communicating with the mixing tank. Device.
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* Cited by examiner, † Cited by third party
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CN114888964A (en) * 2022-05-19 2022-08-12 江西工业贸易职业技术学院 Concrete mixer for concrete construction system material permeates water

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114888964A (en) * 2022-05-19 2022-08-12 江西工业贸易职业技术学院 Concrete mixer for concrete construction system material permeates water
CN114888964B (en) * 2022-05-19 2024-05-10 江西工业贸易职业技术学院 Concrete mixer for permeable concrete construction material preparation

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