JP2011041932A - Stirring device and stirring blade unit - Google Patents

Stirring device and stirring blade unit Download PDF

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JP2011041932A
JP2011041932A JP2009193592A JP2009193592A JP2011041932A JP 2011041932 A JP2011041932 A JP 2011041932A JP 2009193592 A JP2009193592 A JP 2009193592A JP 2009193592 A JP2009193592 A JP 2009193592A JP 2011041932 A JP2011041932 A JP 2011041932A
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stirring blade
stirring
rotating shaft
drum
fluid
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JP5222251B2 (en
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Yoshikazu Kubo
美和 久保
Katsunori Hayashi
林　　克典
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JGC Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/073—Stirrers characterised by their mounting on the shaft with stirring elements moving with respect to the stirrer shaft, e.g. floating or comprising contracting chambers

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stirring device of which stirring blades can be shifted in a fluid if necessary and a stirring blade unit to be used for the stirring device. <P>SOLUTION: In the stirring device 3 for a fluid, an operation part rotates a rotary shaft 363 and while being joined to the rotary shaft 363 by screwing, stirring blades 362 stir a fluid. The screwing groove part 364 is formed in the rotary shaft 363 and when the rotary shaft 363 is rotated in the normal direction, the stirring blades 362 are rotated relatively to the rotary shaft 363 due to the resistance of the fluid and the stirring blades 362 are guided to the regulated positions along the longitudinal direction of the rotary shaft 363. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、２種類の液体や、液体と粉体など流動体を攪拌混合するための技術に関する。   The present invention relates to a technique for stirring and mixing two kinds of liquids and fluids such as liquids and powders.

一般に、攪拌槽内にて２種類の液体を混合して混合液体を得たり、またセメントと水などのように粉体と液体とを混合してスラリーを得たりする場合には攪拌装置が用いられる。攪拌装置は回転軸周りに回転する攪拌翼を備えており、この攪拌翼を攪拌槽内に挿入して回転させ、混合対象の流動体をかき混ぜることにより、２種類の流動体の混合を促進する。   In general, when mixing two kinds of liquid in a stirring tank to obtain a mixed liquid, or when mixing a powder and liquid such as cement and water to obtain a slurry, a stirring device is used. It is done. The stirrer includes a stirring blade that rotates around the rotation shaft, and the stirring blade is inserted into the stirring tank and rotated to stir the fluid to be mixed to promote mixing of the two types of fluid. .

攪拌装置に取り付けられる攪拌翼としては種々のものが知られているが、例えば特許文献１や特許文献２に示すように、攪拌槽内の上下方向に攪拌翼を多段に設け、共通の回転軸にてこれらの攪拌翼を回転させるように構成された攪拌装置がある。上下方向に配置された複数段の攪拌翼を用いることにより、攪拌槽内の流動体の乱れが大きくなる結果、流動体の混合を促進して滞留部の発生を抑制すると共に、短時間の攪拌で均一な混合流動体を得ることができる。   Various types of stirring blades attached to the stirring device are known. For example, as shown in Patent Document 1 and Patent Document 2, a plurality of stirring blades are provided in the vertical direction in the stirring tank, and a common rotating shaft is provided. There is a stirring device configured to rotate these stirring blades. By using a plurality of stirrer blades arranged in the vertical direction, the fluid in the agitation tank becomes more turbulent. A uniform mixed fluid can be obtained.

特開平８−７１３９６号公報：００１３段落〜００１４段落、００２２段落、図１、図３JP-A-8-71396: paragraphs 0013 to 0014, 0022, FIGS. 1 and 3 特開平７−１５５５７９号公報：０００８段落、００１０段落、図１、図３JP-A-7-155579: paragraphs 0008, 0010, FIG. 1, FIG.

特許文献１及び特許文献２に記載された攪拌翼によれば、効率的な攪拌操作を行うことができる一方で、例えば攪拌操作を行いながら攪拌槽の上部側から混合対象の流動体を供給する場合などには以下に記す問題点がある。   According to the stirring blades described in Patent Document 1 and Patent Document 2, while efficient stirring operation can be performed, for example, the fluid to be mixed is supplied from the upper side of the stirring tank while performing the stirring operation. In some cases, there are the following problems.

液体放射性廃棄物（以下、単に放射性廃棄物という）の処理を例に挙げると、放射性廃棄物はドラム缶などからなる攪拌槽内に投入され、セメントと混合されて固化された後、ドラム缶ごと埋設処分場などへと送られる。上述の処理においては、ドラム缶内に予め処理対象の放射性廃棄物を受け入れておき、攪拌翼にて攪拌を行いながらドラム缶の上面に設けられた開口部からセメントを投入し、これら放射性廃棄物とセメントとの攪拌混合（以下、混練という）を行う場合がある。   Taking the treatment of liquid radioactive waste (hereinafter simply referred to as radioactive waste) as an example, radioactive waste is put into a stirring tank consisting of a drum can, etc., mixed with cement and solidified, and then disposed of with the drum can. Sent to places. In the above-described treatment, the radioactive waste to be treated is received in the drum can in advance, and cement is introduced from the opening provided on the upper surface of the drum can while stirring with a stirring blade. May be mixed with stirring (hereinafter referred to as kneading).

このように攪拌翼による混練を行いながらセメントの投入を行う攪拌装置において、特許文献１や特許文献２に記載の技術の如く攪拌翼を上下方向に多段に設けると、ドラム缶内の液レベルが上段側の攪拌翼に達していない期間中においても、上段側の攪拌翼は下段側の攪拌翼と共に回転することになる。   In such a stirring device in which cement is charged while kneading with a stirring blade, when the stirring blades are provided in multiple stages in the vertical direction as in the techniques described in Patent Document 1 and Patent Document 2, the liquid level in the drum can be increased to the upper level. Even during the period of not reaching the side agitating blade, the upper agitating blade rotates together with the lower agitating blade.

このように、いわば空回りしている攪拌翼の上方側から粉体状のセメントを供給すると、回転する攪拌翼とセメントの落下軌道とが交差して、セメントがドラム缶内に勢いよく撒き散らされて放射性廃棄物への着液時に液跳ねを引き起こしたり、セメントの巻き上げを発生させたりしてしまう。そして液跳ねにより形成されたミストが再度上段側の攪拌翼に到達し、さらにこのミストが巻き上げられると、放射性のミストがドラム缶の外へと流出して外部の空間を汚染してしまうおそれもある。   In this way, when powdered cement is supplied from the upper side of an idle stirring blade, the rotating stirring blade intersects with the dropping trajectory of the cement, and the cement is vigorously scattered in the drum. This may cause liquid splashing or landing of cement when landing on radioactive waste. When the mist formed by the liquid splash reaches the upper stirring blade again and is further wound up, the radioactive mist may flow out of the drum can and contaminate the external space. .

また多段化された攪拌翼は、上下方向に広がるように回転軸に固定されるので、例えば狭隘な空間内への取り付けが困難な場合もある。また多段の攪拌翼は異なる高さ位置に配置されることから、メンテナンス時には異なる高さ位置に設けられた攪拌翼の各々にアクセスしなければならず、大型の攪拌装置の場合、それぞれの高さ位置に足場を準備する必要などが生じてメンテナンス性も良くない。   In addition, since the multistage stirrer blades are fixed to the rotating shaft so as to spread in the vertical direction, it may be difficult to attach them in a narrow space, for example. In addition, since the multistage stirrer blades are arranged at different height positions, it is necessary to access each of the stirrer blades provided at different height positions at the time of maintenance. Maintenance is not good due to the need to prepare a scaffold at the position.

本発明はこのような事情の下になされたものであり、その目的は、攪拌するために投入される流動体との交差を回避したり、メンテナンス性を高めたりするなど必要に応じて流動体内における攪拌翼の位置を移動させることが可能な攪拌装置及びこの攪拌装置に用いられる攪拌翼ユニットを提供することにある。   The present invention has been made under such circumstances, and its purpose is to avoid crossing with the fluid to be charged for stirring, to improve maintenance, etc. It is an object of the present invention to provide a stirring device capable of moving the position of the stirring blade and a stirring blade unit used in the stirring device.

本発明に係る攪拌装置は、流動体を攪拌する装置において、
回転軸と、
この回転軸を回転させる駆動部と、
前記回転軸に螺合され、流動体を攪拌するための攪拌翼と、
前記回転軸に形成され、当該回転軸を正転させたときに前記攪拌翼が流動体の抵抗によって当該回転軸に対して相対的に回転することにより当該回転軸の長さ方向に沿って規制位置まで案内される螺条部と、を備えたことを特徴とする。 The stirrer according to the present invention is a device for stirring a fluid,
A rotation axis;
A drive unit for rotating the rotating shaft;
A stirring blade screwed to the rotating shaft for stirring the fluid;
It is formed on the rotating shaft, and when the rotating shaft is rotated forward, the stirring blade is controlled along the length direction of the rotating shaft by rotating relative to the rotating shaft by the resistance of the fluid. And a threaded portion guided to a position.

さらに前記攪拌装置は以下の特徴を備えていてもよい。
（ａ）前記攪拌翼が規制位置に置かれている状態で回転軸を正転させることにより当該攪拌翼が回転軸と共に回転すること。
（ｂ）前記規制位置は、回転軸に設けられた位置規制部により攪拌翼の移動が規制される位置であること。
（ｃ）前記回転軸は上下方向に伸びるように設けられ、
前記規制位置は、前記攪拌翼の一部が流動体の上面から露出することにより、前記攪拌翼に働く力が釣り合って攪拌翼の移動が規制される位置であること。 Furthermore, the stirring device may have the following features.
(A) The stirring blade rotates together with the rotating shaft by rotating the rotating shaft in a normal direction in a state where the stirring blade is placed at the restriction position.
(B) The restriction position is a position where the movement of the stirring blade is restricted by a position restriction portion provided on the rotating shaft.
(C) The rotating shaft is provided to extend in the vertical direction,
The restriction position is a position where a part of the stirring blade is exposed from the upper surface of the fluid, so that the force acting on the stirring blade is balanced and the movement of the stirring blade is restricted.

（ｄ）前記回転軸には、前記攪拌翼以外に他の攪拌翼が設けられていること。
（ｅ）前記他の攪拌翼は回転軸に固定されていること。
（ｆ）前記回転軸に形成され、当該回転軸を正転させたときに前記他の攪拌翼が流動体の抵抗によって当該回転軸に対して相対的に回転することにより当該回転軸の長さ方向に沿って案内される、前記螺条部とは異なる他の螺条部と、
前記回転軸を正転させたときに前記他の攪拌翼における回転軸の長さ方向の移動を規制するために、前記回転軸の長さ方向において前記規制位置とは異なる位置に設けられた位置規制部と、を備えたこと。
（ｇ）前記螺条部の形成領域と他の螺条部の形成領域とは、回転軸の長さ方向において互いに重複していること。 (D) The rotating shaft is provided with another stirring blade in addition to the stirring blade.
(E) The other stirring blade is fixed to a rotating shaft.
(F) The length of the rotation shaft is formed by rotating the other rotation blade relative to the rotation shaft by the resistance of the fluid when the rotation shaft is normally rotated. Another threaded portion different from the threaded portion guided along the direction,
A position provided at a position different from the restriction position in the length direction of the rotation shaft in order to restrict movement of the rotation shaft in the length direction of the other stirring blade when the rotation shaft is rotated forward. And having a regulation section.
(G) The formation region of the screw portion and the formation region of another screw portion overlap each other in the length direction of the rotation shaft.

また他の発明に係る攪拌翼ユニットは、上述のいずれかの攪拌装置の発明に記載された、回転軸及び攪拌翼からなることを特徴とする。   A stirring blade unit according to another invention is characterized by comprising a rotating shaft and a stirring blade described in any of the above-described stirring device inventions.

本発明によれば、攪拌装置の回転軸に形成された螺条部により、この回転軸に設けられた攪拌翼を流動体の抵抗によって回転軸に対して相対的に回転させ、当該回転軸の長さ方向に沿って規制位置まで案内することができる。この結果、例えば流動体の上面位置の上昇に合わせて攪拌翼を上昇させ、当該攪拌翼を流動体内に沈めた状態で、当該流動体の上面近傍の位置を攪拌したり、またメンテナンス作業しにくい位置にて攪拌動作を行う攪拌翼について、メンテナンス時には作業し易い位置まで攪拌翼を移動させたりするなど、必要に応じて流動体内における攪拌翼の位置を移動させることが可能となり、流動体の攪拌性能や攪拌翼のメンテナンス性を高めることができる。   According to the present invention, by the thread portion formed on the rotating shaft of the stirring device, the stirring blade provided on the rotating shaft is rotated relative to the rotating shaft by the resistance of the fluid, It is possible to guide to the restriction position along the length direction. As a result, for example, the position of the fluid near the top surface of the fluid is agitated and maintenance work is difficult with the stirring blade raised in accordance with the rise in the position of the top surface of the fluid and the stirring blade submerged in the fluid. For the stirring blade that performs stirring operation at the position, it is possible to move the position of the stirring blade in the fluid as necessary, such as moving the stirring blade to a position where it can be easily operated during maintenance. Performance and maintainability of the impeller can be improved.

実施の形態に係る放射性廃棄物処理設備の縦断側面図である。It is a vertical side view of the radioactive waste processing equipment which concerns on embodiment. 前記放射性廃棄物処理設備内に設けられている混練装置の側面図である。It is a side view of the kneading apparatus provided in the said radioactive waste processing facility. 前記混練装置に攪拌ユニットが取り付けられている状態を示す斜視図である。It is a perspective view which shows the state in which the stirring unit is attached to the said kneading apparatus. 前記攪拌翼ユニットの外観構成を示す側面図である。It is a side view which shows the external appearance structure of the said stirring blade unit. 前記攪拌翼ユニットに設けられた攪拌翼の昇降機構の構成を示す一部破断斜視図である。It is a partially broken perspective view which shows the structure of the raising / lowering mechanism of the stirring blade provided in the said stirring blade unit. 前記攪拌翼の昇降機構の構成を示す横断平面図である。It is a cross-sectional top view which shows the structure of the raising / lowering mechanism of the said stirring blade. 前記放射性廃棄物処理設備の作用を示す第１の説明図である。It is 1st explanatory drawing which shows the effect | action of the said radioactive waste processing equipment. 前記放射性廃棄物処理設備の作用を示す第２の説明図である。It is 2nd explanatory drawing which shows the effect | action of the said radioactive waste processing equipment. 混練動作実行中のドラム缶内の状態を示す一部破断斜視図である。It is a partially broken perspective view which shows the state in the drum can during kneading | mixing operation execution. 前記攪拌翼ユニットの作用を示す説明図である。It is explanatory drawing which shows the effect | action of the said stirring blade unit. 回転軸に沿って昇降する攪拌翼の動作を示す第１の説明図である。It is the 1st explanatory view showing operation of a stirring blade which goes up and down along a rotation axis. 前記攪拌翼の動作を示す第２の説明図である。It is the 2nd explanatory view showing operation of the above-mentioned stirring blade. 攪拌翼の昇降機構の変形例を示す一部破断斜視図である。It is a partially broken perspective view which shows the modification of the raising / lowering mechanism of a stirring blade. 第２の実施の形態に係る攪拌翼ユニットの説明図である。It is explanatory drawing of the stirring blade unit which concerns on 2nd Embodiment. 第３の実施の形態に係る攪拌翼ユニットの説明図である。It is explanatory drawing of the stirring blade unit which concerns on 3rd Embodiment. 第４の実施の形態に係る攪拌翼ユニットの外観構成を示す側面図である。It is a side view which shows the external appearance structure of the stirring blade unit which concerns on 4th Embodiment. 第５の実施の形態に係る攪拌翼ユニットの説明図である。It is explanatory drawing of the stirring blade unit which concerns on 5th Embodiment. 第６の実施の形態に係る攪拌翼ユニットの説明図である。It is explanatory drawing of the stirring blade unit which concerns on 6th Embodiment. 前記第６の実施の形態に係る攪拌翼ユニットの他の説明図である。It is other explanatory drawing of the stirring blade unit which concerns on the said 6th Embodiment.

本発明に係る攪拌装置及び攪拌翼ユニットを、液体放射性廃棄物（放射性廃棄物）の処理設備（放射性廃棄物処理設備）に適用した実施の形態について説明する。図１に示した本実施の形態に係る放射性廃棄物処理設備（以下、処理設備という）は、ドラム缶内で放射性廃棄物とセメントとの混練を行うインドラム方式の処理設備として構成されている。   An embodiment in which a stirring device and a stirring blade unit according to the present invention are applied to a processing facility (radioactive waste processing facility) for liquid radioactive waste (radioactive waste) will be described. The radioactive waste treatment facility (hereinafter referred to as a treatment facility) according to the present embodiment shown in FIG. 1 is configured as an in-drum type treatment facility that kneads the radioactive waste and cement in a drum can.

図１〜図３を参照しながら本実施の形態に係る処理設備１の構成について説明すると、図１の縦断側面図に模式的に示すように処理設備１は、例えばコンクリート製の建屋を隔壁１３にて例えば２つの区画に分割し、一方側の区画を低線量の放射性管理区域であるルーム１１、他方側の区画を高線量の放射性管理区域であるセル１２に設定している。   The configuration of the processing equipment 1 according to the present embodiment will be described with reference to FIGS. 1 to 3. As schematically shown in the longitudinal side view of FIG. 1, the processing equipment 1 is a concrete building, for example, a partition wall 13. For example, it is divided into two sections. One section is set as a room 11 which is a low-dose radioactive management area, and the other section is set as a cell 12 which is a high-dose radioactive management area.

低線量の放射性管理区域であるルーム１１は、作業従事者が立ち入り可能な区域であり、放射性廃棄物とセメントとの混練（攪拌混合）が行われるドラム缶７の準備や、処理を終えたドラム缶７を処理設備１外へと搬出する作業などが行われる。隔壁１３には、搬入出口１４１が設けられていてドラム缶７はこの搬入出口１４１を介してルーム１１とセル１２との間を搬送される。搬入出口１４１は、ドラム缶７の搬入出時以外などには、開閉扉１４にて閉じられ、ルーム１１からセル１２を隔離することができるようになっている。   The room 11 which is a low-dose radioactive control area is an area where workers can enter, and preparation of the drum can 7 in which the radioactive waste and cement are mixed (stir-mixed) and the drum can 7 which has been processed. Is carried out to the outside of the processing equipment 1. The partition wall 13 is provided with a loading / unloading port 141, and the drum 7 is transported between the room 11 and the cell 12 through the loading / unloading port 141. The loading / unloading port 141 is closed by the opening / closing door 14 except when the drum can 7 is loaded / unloaded, and the cell 12 can be isolated from the room 11.

ドラム缶７は例えば無人搬送車などから構成される搬送装置２によって搬送される。搬送装置２は載置台２１を備えており、ドラム缶７はこの載置台２１上に載置された状態で搬送されると共に、この載置台２１は上下方向に昇降自在に構成されていてドラム缶７を保持する高さ位置を調節することができる。搬送装置２は例えば不図示の管制室からの遠隔操作に基づいて移動する構成としてもよいし、また例えば自動制御などにより、例えば不図示のレール上を走行しながら予め設定された場所を所定のタイミングで移動する構成としてもよい。   The drum can 7 is transported by a transport device 2 composed of, for example, an automatic guided vehicle. The transport device 2 includes a mounting table 21, and the drum can 7 is transported while being placed on the mounting table 21, and the mounting table 21 is configured to be movable up and down in the vertical direction. The height position to hold can be adjusted. For example, the transport device 2 may be configured to move based on a remote operation from a control room (not shown), or, for example, by automatic control or the like, a predetermined place may be set while traveling on a rail (not shown). It is good also as a structure which moves at timing.

セル１２は、ドラム缶７に放射性廃棄物を充填して固化する廃棄物処理が行われる区域であり、放射性廃棄物をドラム缶７に供給する廃棄物貯槽６と、ドラム缶７に例えばセメントなどの固化材を供給するセメントホッパー４と、放射性廃棄物とセメントとの混練を行う混練装置３と、混練動作が行われているドラム缶７に硬化剤などを供給する薬液タンク５と、が設けられている。   The cell 12 is an area where waste treatment is performed in which the drum can 7 is filled with radioactive waste and solidified. The waste storage tank 6 supplies the radioactive waste to the drum 7 and the solidified material such as cement is supplied to the drum 7. A cement hopper 4 for supplying the material, a kneading device 3 for kneading the radioactive waste and the cement, and a chemical tank 5 for supplying a curing agent or the like to the drum 7 where the kneading operation is performed.

廃棄物貯槽６は、処理設備１の外部に設けられた排出区域から受け入れた放射性廃棄物をドラム缶７に投入する役割を果たす。廃棄物貯槽６は、例えば蒸発機能を備えていてもよく、この場合には、外部から受け入れた放射性廃棄物は水分を蒸発させて濃縮された後、ドラム缶７へと投入される。   The waste storage tank 6 plays a role of putting radioactive waste received from a discharge area provided outside the processing facility 1 into the drum can 7. The waste storage tank 6 may have, for example, an evaporation function. In this case, the radioactive waste received from the outside is concentrated by evaporating moisture, and then is put into the drum 7.

図１に示した廃棄物貯槽６は、前記の蒸発機能を備えた例を示しており、例えば不図示の加熱機構を備えたホッパー形状のタンクとして構成されている。廃棄物貯槽６の上面には例えば放射性廃棄物を受け入れる廃棄物受け入れライン６２と、蒸発させた蒸気を排出する排出ライン６３とが設けられている。本例ではこれら廃棄物受け入れライン６２や排出ライン６３はルーム１１及びセル１２から隔離された配管室１５内に設けられている。   The waste storage tank 6 shown in FIG. 1 shows an example having the evaporation function, and is configured as a hopper-shaped tank having a heating mechanism (not shown), for example. On the upper surface of the waste storage tank 6, for example, a waste receiving line 62 for receiving radioactive waste and a discharge line 63 for discharging evaporated vapor are provided. In this example, the waste receiving line 62 and the discharge line 63 are provided in the piping chamber 15 isolated from the room 11 and the cell 12.

廃棄物貯槽６を成すホッパーの下端には、廃棄物貯槽６の下方位置まで搬送されてきたドラム缶７に放射性廃棄物を投入するための払出部６１が設けられている。払出部６１は廃棄物貯槽６の下端から下方側へ向けて伸びる円筒形状の部材として構成され、この払出部６１がドラム缶７の開口部内に挿入された状態にて廃棄物貯槽６からの放射性廃棄物の払い出しが行われる。払出部６１が円筒形状に構成されていることにより、ドラム缶７に投入される放射性廃棄物が周囲に飛び散ることを防ぎセル１２内を汚染せずに投入操作を行うことができる。ここで払出部６１に設けられた６４は蓋部材である。   At the lower end of the hopper constituting the waste storage tank 6, a payout unit 61 is provided for feeding radioactive waste into the drum 7 that has been transported to a position below the waste storage tank 6. The dispensing unit 61 is configured as a cylindrical member extending downward from the lower end of the waste storage tank 6, and the radioactive disposal from the waste storage tank 6 in a state where the dispensing unit 61 is inserted into the opening of the drum can 7. Items are paid out. Since the dispensing part 61 is configured in a cylindrical shape, the radioactive waste thrown into the drum can 7 can be prevented from scattering around and the charging operation can be performed without contaminating the inside of the cell 12. Here, 64 provided in the dispensing unit 61 is a lid member.

セメントホッパー４は固化材、例えば放射性廃棄物中の水分と反応して固化するセメント粉を貯蔵するホッパーであり、セメントホッパー４の下端に設けられたセメント供給ライン４１を介してドラム缶７にセメントを投入する役割を果たしている。セメント供給ライン４１は混練時にドラム缶７の開口部を覆う蓋部材３４に接続されていて、ドラム缶７の上方側からセメントを投入することができる。
薬液タンク５には放射性廃棄物とセメントとの混練物の硬化を促進する硬化剤などが貯留されており、蓋部材３４に接続された薬液供給ライン５１を介してドラム缶７に硬化剤などを供給することができるようになっている。 The cement hopper 4 is a hopper that stores a solidified material, for example, cement powder that solidifies by reacting with moisture in the radioactive waste. The cement hopper 4 is cemented into the drum can 7 via a cement supply line 41 provided at the lower end of the cement hopper 4. It plays the role of input. The cement supply line 41 is connected to a lid member 34 that covers the opening of the drum can 7 during kneading, and cement can be charged from above the drum can 7.
The chemical solution tank 5 stores a curing agent that accelerates the curing of the kneaded mixture of radioactive waste and cement, and supplies the curing agent and the like to the drum 7 through the chemical solution supply line 51 connected to the lid member 34. Can be done.

混練装置３は本実施の形態の攪拌装置に相当し、ドラム缶７に投入された放射性廃棄物とセメントとを混練する役割を果たす。図１、図２に模式的に示すように混練装置３は、混練を実行する攪拌翼ユニット３６と、この攪拌翼ユニット３６の第１、第２の攪拌翼３６１、３６２を軸周りに回転させる駆動軸３３とを備えている。   The kneading device 3 corresponds to the agitation device of the present embodiment, and plays a role of kneading the radioactive waste put into the drum 7 and the cement. As schematically shown in FIGS. 1 and 2, the kneading apparatus 3 rotates the stirring blade unit 36 that performs kneading, and the first and second stirring blades 361 and 362 of the stirring blade unit 36 around the axis. And a drive shaft 33.

図２に示すように混練装置３は、ボールネジ機構に接続された支持台３７上に固定されており、垂直方向に配置したボールネジ３８３を、モーター３８１によって正転、逆転させることにより支持台３７を昇降させて、これにより混練装置３全体を上下に移動させることができる。図中、３８２は処理設備１の側壁１２１面にてボールネジ３８３を保持する保持部材である。   As shown in FIG. 2, the kneading apparatus 3 is fixed on a support base 37 connected to a ball screw mechanism, and the support base 37 is rotated by rotating the ball screw 383 arranged in the vertical direction forward and reverse by a motor 381. The entire kneading apparatus 3 can be moved up and down by moving up and down. In the drawing, reference numeral 382 denotes a holding member that holds the ball screw 383 on the side wall 121 surface of the processing facility 1.

図１〜図３に示すように、モーター３１の下方位置には、混練動作時にドラム缶７の開口部を覆う蓋部材３４が設けられている。図２、図３に示すように蓋部材３４は支持部材３４１を介して例えば処理設備１の側壁１２１に固定されており、図１、図３に示すように既述のセメント供給ライン４１及び薬液供給ライン５１はこの蓋部材３４を貫通してドラム缶７の配置される空間に向けて開口している。   As shown in FIGS. 1 to 3, a lid member 34 is provided below the motor 31 to cover the opening of the drum can 7 during the kneading operation. 2 and 3, the lid member 34 is fixed to, for example, the side wall 121 of the processing facility 1 via the support member 341. As shown in FIGS. 1 and 3, the cement supply line 41 and the chemical solution described above are used. The supply line 51 passes through the lid member 34 and opens toward the space where the drum can 7 is disposed.

さらに図２、図３に示すように蓋部材３４には貫通孔３４２が設けられており、この貫通孔３４２には混練装置３の駆動軸３３が貫通している。この駆動軸３３は貫通孔３４２内を上下に自由に移動することが可能であり、既述の支持台３７の上下移動に合わせて駆動軸３３が貫通孔３４２内を上下に移動する構成となっている。このほか、図３に示す３４３は混練時にドラム缶７内の雰囲気を排気する排気ラインである。なお、便宜上、図１や図２などの模式図では排気ライン３４３の記載は省略してあり、また図２ではセメント供給ライン４１、薬液供給ライン５１の記載は省略してある。   Further, as shown in FIGS. 2 and 3, the lid member 34 is provided with a through hole 342, and the drive shaft 33 of the kneading apparatus 3 passes through the through hole 342. The drive shaft 33 can freely move up and down in the through hole 342, and the drive shaft 33 moves up and down in the through hole 342 in accordance with the vertical movement of the support base 37 described above. ing. In addition, 343 shown in FIG. 3 is an exhaust line for exhausting the atmosphere in the drum can 7 during kneading. For convenience, the exhaust lines 343 are not shown in the schematic diagrams of FIGS. 1 and 2, and the cement supply line 41 and the chemical supply line 51 are not shown in FIG.

図１、図３に示す３５は、廃棄物貯槽６における濃縮操作の際に加熱された放射性廃棄物を冷却するための冷却機構である。冷却機構３５は例えばドラム缶７の側壁面を外側から覆うことが可能な内曲面を備え、左右２つに分割された半円筒形状の板状部材として構成されている。各冷却機構３５の内部には、例えば冷却水などの冷媒を通流させる不図示の冷媒流路が形成されており、ドラム缶７の側壁との接触面を介して冷媒に熱を吸収させることができる。図３に示した３５１は冷却機構３５に冷媒を供給する冷媒供給ラインであり、３５２は冷却機構３５から冷媒を排出する冷媒排出ラインである。   Reference numeral 35 shown in FIGS. 1 and 3 denotes a cooling mechanism for cooling the radioactive waste heated during the concentration operation in the waste storage tank 6. The cooling mechanism 35 includes, for example, an inner curved surface capable of covering the side wall surface of the drum can 7 from the outside, and is configured as a semi-cylindrical plate-like member divided into two left and right. Inside each cooling mechanism 35, a refrigerant flow path (not shown) through which a refrigerant such as cooling water flows is formed, and the refrigerant can absorb heat through a contact surface with the side wall of the drum can 7. it can. 3 is a refrigerant supply line that supplies refrigerant to the cooling mechanism 35, and 352 is a refrigerant discharge line that discharges refrigerant from the cooling mechanism 35.

また冷却機構３５は不図示の移動機構によって左右横方向及び上下方向に移動することができるようになっており、例えば図３に示すようにドラム缶７が搬入される領域から左右外側に退避した待機位置と、図９に示すように混練装置３の下方側に搬入されたドラム缶７の側壁の周囲を覆い、ドラム缶７の冷却処理を実行する処理位置との間を移動させることが可能となっている。
なお、冷却機構は保温機構または加温機構であってもよい。これらの機構を利用することにより混練前に廃液が冷えてしまった場合、または所定の混練温度より廃液の温度が下がってしまった場合に、廃液中に塩が析出すること等を防ぐことができるからである。 Further, the cooling mechanism 35 can be moved in the horizontal and horizontal directions and the vertical direction by a moving mechanism (not shown). For example, as shown in FIG. As shown in FIG. 9, it is possible to move between the position and the processing position for covering the periphery of the side wall of the drum can 7 carried into the lower side of the kneading apparatus 3 and performing the cooling process of the drum can 7. Yes.
The cooling mechanism may be a heat retaining mechanism or a warming mechanism. By utilizing these mechanisms, it is possible to prevent salt from being deposited in the waste liquid when the waste liquid has cooled before kneading, or when the temperature of the waste liquid has fallen below a predetermined kneading temperature. Because.

ここでドラム缶７内にて混練される混練物（放射性廃棄物とセメントとの混合物）は、混練開始時において粘度が低く、セメント投入量の増加と共に粘度が高くなるという特徴を有している。またドラム缶７内における混練物上面の高さ位置は、混練開始時において低く、セメント投入量の増加に伴って高くなっていく。   Here, the kneaded material (a mixture of radioactive waste and cement) kneaded in the drum 7 has a characteristic that the viscosity is low at the start of kneading and the viscosity increases as the amount of cement input increases. The height position of the upper surface of the kneaded material in the drum 7 is low at the start of kneading and becomes higher as the amount of cement input increases.

混練物の粘度が次第に高くなるという特徴を踏まえると、混練装置３には攪拌翼を多段に設け、より強力な攪拌作用を得て滞留部や混練のムラの発生を抑制することが望ましい。一方で、セメントはドラム缶７の上面側に設けられた開口部から投入されること、混練物の上面の位置はドラム缶７内の下部側から次第に上昇していくことを考慮すると、このような方法でセメントが投入されるドラム缶７内に複数段の攪拌翼を上下方向に配置することは、背景技術にて説明した液跳ね等を引き起こすおそれがあり好ましくない。   In view of the characteristic that the viscosity of the kneaded product gradually increases, it is desirable to provide the kneading device 3 with a plurality of stirring blades to obtain a stronger stirring action and to suppress the occurrence of a stagnant portion and kneading unevenness. On the other hand, in consideration of the fact that cement is introduced from the opening provided on the upper surface side of the drum can 7 and that the position of the upper surface of the kneaded material gradually rises from the lower side in the drum can 7, such a method. It is not preferable to arrange a plurality of stirrer blades in the up-down direction in the drum 7 into which cement is put in because there is a risk of causing the liquid splash described in the background art.

そこで本実施の形態に係る混練装置３に設けられた攪拌ユニット３６は、例えば上下２段に配置した攪拌翼の例えば上段側の攪拌翼が混練物の上面位置と共に上昇することが可能となっている。以下、当該攪拌ユニット３６の構成について図３〜図６を参照しながら説明する。図３、図４に示すように本実施の形態に係る攪拌翼ユニット３６は、回転軸３６３と、第１の攪拌翼３６１及び第２の攪拌翼３６２とを備えている。   Therefore, in the stirring unit 36 provided in the kneading apparatus 3 according to the present embodiment, for example, the stirring blade on the upper side of the stirring blades arranged in the upper and lower stages, for example, can rise together with the upper surface position of the kneaded material. Yes. Hereinafter, the configuration of the stirring unit 36 will be described with reference to FIGS. As shown in FIGS. 3 and 4, the stirring blade unit 36 according to the present embodiment includes a rotating shaft 363, a first stirring blade 361, and a second stirring blade 362.

図３に示すように回転軸３６３は駆動軸３３に接続されて鉛直軸周りに回転自在に構成された円柱形状の部材である。回転軸３６３は、例えば図９に示すように、ドラム缶７を処理位置まで移動した状態において攪拌翼ユニット３６全体がドラム缶７内に格納される長さに形成されている。   As shown in FIG. 3, the rotation shaft 363 is a columnar member that is connected to the drive shaft 33 and configured to be rotatable about the vertical axis. For example, as shown in FIG. 9, the rotary shaft 363 is formed to have a length that allows the entire stirring blade unit 36 to be stored in the drum can 7 in a state where the drum can 7 is moved to the processing position.

回転軸３６３の下端には、放射性廃棄物とセメントとの混練を実行する第１の攪拌翼３６１が固定されている。第１の攪拌翼３６１は例えば板状の部材から構成される４枚の攪拌部材３６０を備えており、これらの攪拌部材３６０は回転軸３６３を中心として径方向に放射状に伸びるように互いに等間隔で配置されている。各攪拌部材３６０は例えば幅広に形成された攪拌面が第１の攪拌翼３６１の回転方向に対して直交した状態となるように例えばボス部材を介して回転軸３６３に固定されている。   A first stirring blade 361 that performs kneading of radioactive waste and cement is fixed to the lower end of the rotating shaft 363. The first agitating blade 361 includes, for example, four agitating members 360 formed of plate-like members, and these agitating members 360 are equidistant from each other so as to extend radially in the radial direction around the rotating shaft 363. Is arranged in. Each stirring member 360 is fixed to the rotating shaft 363 via, for example, a boss member so that the stirring surface formed wide, for example, is in a state orthogonal to the rotation direction of the first stirring blade 361.

このように回転軸３６３の下端に固定された第１の攪拌翼３６１の上段側には、第２の攪拌翼３６２が設けられている。図４〜図６に示すように、第２の攪拌翼３６２には、回転軸３６３を取り巻くように設けられた短管状のボス部材３６５が設けられており、このボス部材３６５の外周面に、４枚の攪拌部材３６０が径方向に伸びるように互いに等間隔で配置されている点は既述の第１の攪拌翼３６１と同様である。一方、第２の攪拌翼３６２のボス部材３６５は、回転軸３６３に固定されておらず、またボス部材３６５の内径は回転軸３６３の外径よりもやや大きくなっていることにより、第２の攪拌翼３６２が回転軸３６３の周りに回転自在、回転軸３６３に沿って上下方向に昇降自在に構成されている点は第１の攪拌翼３６１と異なっている。これら第１、第２の攪拌翼３６１、３６２のうち、第２の攪拌翼３６２は本実施の形態の攪拌翼に相当し、第１の攪拌翼３６１は他の攪拌翼に相当している。   The second stirring blade 362 is provided on the upper stage side of the first stirring blade 361 fixed to the lower end of the rotating shaft 363 in this way. As shown in FIGS. 4 to 6, the second stirring blade 362 is provided with a short tubular boss member 365 provided so as to surround the rotating shaft 363, and on the outer peripheral surface of the boss member 365, The point that the four stirring members 360 are arranged at equal intervals so as to extend in the radial direction is the same as the first stirring blade 361 described above. On the other hand, the boss member 365 of the second stirring blade 362 is not fixed to the rotating shaft 363, and the inner diameter of the boss member 365 is slightly larger than the outer diameter of the rotating shaft 363. The stirring blade 362 is different from the first stirring blade 361 in that the stirring blade 362 is configured to be rotatable around the rotation shaft 363 and to be vertically movable along the rotation shaft 363. Of these first and second stirring blades 361 and 362, the second stirring blade 362 corresponds to the stirring blade of the present embodiment, and the first stirring blade 361 corresponds to the other stirring blades.

図４、図５に示すように回転軸３６３には、周方向に回転自在、上下方向に昇降自在に構成された第２の攪拌翼３６２の動作方向を案内するための螺条部３６４が設けられている。螺条部３６４は回転軸３６３の表面に彫られた溝状の軌道であり、混練動作時の回転軸３６３の回転方向を正転方向としたとき、正転方向とは逆方向に回転しながら回転軸３３に沿って上方向に伸びる螺旋状の軌道として構成されている。また図５では便宜上、攪拌部材３６０の記載は省略してある。   As shown in FIGS. 4 and 5, the rotating shaft 363 is provided with a threaded portion 364 for guiding the operation direction of the second stirring blade 362 configured to be rotatable in the circumferential direction and vertically movable up and down. It has been. The threaded portion 364 is a groove-shaped track carved on the surface of the rotating shaft 363. When the rotating direction of the rotating shaft 363 during the kneading operation is a normal rotation direction, the screw portion 364 rotates in a direction opposite to the normal rotation direction. It is configured as a spiral track extending upward along the rotation axis 33. In FIG. 5, the illustration of the stirring member 360 is omitted for convenience.

図５、図６に示すように第２の攪拌翼３６２のボス部材３６５の例えば中心の高さ位置には、送りねじ３６６がボス部材３６５の径方向に向けて貫通しており、当該送りねじ３６６の先端部は螺条部３６４内に挿入されている。送りねじ３６６の先端部には、例えば半球状の走行部材３６７が設けられている一方、回転軸３６３の溝形状は例えばこの走行部材３６７に対応した半球形状に切り欠かれており、走行部材３６７は回転軸３６３内を滑らかに走行することができる。また送りねじ３６６の先端部には、転動自在に構成したボール状の転動体を埋め込み、当該転動体が螺条部３６４内で転がる構成としてもよい。   As shown in FIGS. 5 and 6, a feed screw 366 penetrates in the radial direction of the boss member 365 at the center height position of the boss member 365 of the second stirring blade 362, for example. The distal end portion of 366 is inserted into the thread portion 364. For example, a hemispheric traveling member 367 is provided at the distal end of the feed screw 366, while the groove shape of the rotating shaft 363 is notched in a hemispherical shape corresponding to the traveling member 367, for example. Can smoothly travel in the rotating shaft 363. Alternatively, a ball-shaped rolling element configured to roll freely may be embedded in the distal end portion of the feed screw 366 so that the rolling element rolls within the threaded portion 364.

以上に説明した構成を備えることにより、第２の攪拌翼３６２は回転軸３６３に螺合下状態となり、攪拌部材３６０から正転方向とは反対の方向（逆転方向）に働く力を受けると、走行部材３６７が螺条部３６４に案内され、これにより第２の攪拌翼３６２は逆転方向に回転しながら上昇し、その高さ位置を変えることになる。これとは反対に攪拌部材３６０に正転方向に働く力を受けると、第２の攪拌翼３６２は正転方向に回転しながら降下することになる。   By providing the configuration described above, the second stirring blade 362 is screwed into the rotating shaft 363, and when receiving a force acting in the direction opposite to the normal rotation direction (reverse rotation direction) from the stirring member 360, The traveling member 367 is guided by the threaded portion 364, whereby the second stirring blade 362 is raised while rotating in the reverse direction, and its height position is changed. On the contrary, when the stirring member 360 receives a force acting in the forward rotation direction, the second stirring blade 362 descends while rotating in the forward rotation direction.

また攪拌部材３６０に働く力は螺条部３６４の伸びる方向に沿って第２の攪拌翼３６２を動作させる力として働くことになるが、この螺条部３６４に沿って働く力を水平成分と垂直成分とに分解したとき、この垂直成分の力が、第２の攪拌翼３６２に働く重力より、混練物から働く浮力を差し引いた下向きの力よりも小さくなるとき、第１の攪拌翼３６１は自重により降下して第１の攪拌翼３６１上に載置されることになる。   Further, the force acting on the stirring member 360 acts as a force for operating the second stirring blade 362 along the direction in which the screw portion 364 extends. The force acting along the screw portion 364 is perpendicular to the horizontal component. When the force of the vertical component becomes smaller than the downward force obtained by subtracting the buoyancy acting from the kneaded material from the gravity acting on the second stirring blade 362 when decomposed into the components, the first stirring blade 361 has its own weight. Is lowered and placed on the first stirring blade 361.

ここで図５に示すように、螺条部３６４の傾斜面が水平方向に対して成す角度αは、例えば１０°〜７０°の範囲内に設定される。螺条部３６４の傾斜を小さくすると第２の攪拌翼３６２の回転力を大きくすることができるので、螺条部３６４と走行部材３６７との間に多少の異物を噛み込んだとしても第２の攪拌翼３６２は回転軸３６３に固着しにくくなる。一方、螺条部３６４の傾斜を大きくすると螺旋を成す螺条部３６４の巻数が少なく、螺条部３６４全体の距離が短くなるので螺条部３６４と走行部材３６７との間に異物を噛み込む確率を小さくすることができる。   Here, as shown in FIG. 5, the angle α formed by the inclined surface of the threaded portion 364 with respect to the horizontal direction is set within a range of 10 ° to 70 °, for example. Since the rotational force of the second stirring blade 362 can be increased by reducing the inclination of the threaded portion 364, even if some foreign matter is caught between the threaded portion 364 and the traveling member 367, The stirring blade 362 is difficult to adhere to the rotating shaft 363. On the other hand, when the inclination of the thread portion 364 is increased, the number of turns of the spiral thread portion 364 is reduced and the entire distance of the thread portion 364 is shortened, so that foreign matter is caught between the thread portion 364 and the traveling member 367. Probability can be reduced.

また図３、図４に示すように螺条部３６４は回転軸３６３の途中の高さ位置にて途切れている。螺条部３６４が途切れている終端部の高さ位置は、ドラム缶７内に予め設定した量の混練物を投入した状態において、第２の攪拌翼３６２が混練物の上面から飛び出さず、且つ、前記上面近傍の混練物内にて混練を行うことが可能な高さに設定されている。   Further, as shown in FIGS. 3 and 4, the threaded portion 364 is interrupted at a height position in the middle of the rotating shaft 363. The height position of the terminal portion where the thread portion 364 is interrupted is such that the second stirring blade 362 does not jump out from the upper surface of the kneaded material when a preset amount of the kneaded material is charged into the drum can 7, and The height is set such that kneading can be performed in the kneaded material in the vicinity of the upper surface.

以上に説明した構成を備えた処理設備１の搬送装置２や混練装置３、セメントホッパー４、薬液タンク５、廃棄物貯槽６の払い出し機構などは、これら各部の動作を制御する制御部８と接続されている。制御部８は、ＣＰＵ、メモリ及びプログラム格納部を備えており、処理設備１の各部の動作を実行するための制御信号を出力するように構成されている。プログラム格納部には、処理設備１の各部の動作に係る制御についてのステップ（命令）群が組まれたプログラムが記録されており、このプログラムは、例えばハードディスク、コンパクトディスク、マグネットオプティカルディスク、メモリーカード等の記憶媒体に格納され、そこからコンピュータにインストールされる。   The transfer device 2 and the kneading device 3, the cement hopper 4, the chemical tank 5, the waste storage tank 6 and the payout mechanism of the processing facility 1 having the above-described configuration are connected to the control unit 8 that controls the operation of these units. Has been. The control unit 8 includes a CPU, a memory, and a program storage unit, and is configured to output a control signal for executing the operation of each unit of the processing facility 1. The program storage unit stores a program in which a group of steps (commands) for control related to the operation of each unit of the processing facility 1 is assembled. This program is, for example, a hard disk, a compact disk, a magnetic optical disk, a memory card. Or the like, and is installed in the computer from there.

次に本実施の形態の処理設備１の作用について説明する。はじめにルーム１１側では、放射性廃棄物を充填するドラム缶７を搬送装置２の載置台２１上の所定の位置に載置する一方、セル１２内では、冷却機構３５を待機位置まで移動させた状態で待機している。   Next, the effect | action of the processing equipment 1 of this Embodiment is demonstrated. First, on the room 11 side, the drum 7 filled with radioactive waste is placed at a predetermined position on the placement table 21 of the transport device 2, while the cooling mechanism 35 is moved to the standby position in the cell 12. Waiting.

次に搬入出口１４１の開閉扉１４を開き、セル１２内に搬送装置２を進入させた後、開閉扉１４を閉じ、ドラム缶７を廃棄物貯槽６の下方位置まで搬送する。そして図７（ａ）に示すように、搬送装置２の載置台２１を上昇させ、ドラム缶７の開口部に廃棄物貯槽６の払出部６１を挿入する。廃棄物貯槽６側においては、例えばドラム缶７が搬送されてきたタイミングで放射性廃棄物の払い出しを開始できるように、放射性廃棄物の濃縮操作を予め行っておく。しかる後、払出部６１を介して廃棄物貯槽６からドラム缶７への放射性廃棄物の投入を実行し、予め定められた量の放射性廃棄物を投入したら、投入動作を終了する。   Next, the opening / closing door 14 of the loading / unloading port 141 is opened, and the transfer device 2 is entered into the cell 12. Then, the opening / closing door 14 is closed, and the drum can 7 is transferred to a position below the waste storage tank 6. Then, as shown in FIG. 7A, the mounting table 21 of the transport device 2 is raised, and the dispensing unit 61 of the waste storage tank 6 is inserted into the opening of the drum can 7. On the waste storage tank 6 side, for example, the radioactive waste concentration operation is performed in advance so that the discharge of the radioactive waste can be started at the timing when the drum can 7 is conveyed. Thereafter, the radioactive waste is input from the waste storage tank 6 to the drum can 7 through the dispensing unit 61, and when a predetermined amount of radioactive waste is input, the input operation is terminated.

次いで、放射性廃棄物を受け入れたドラム缶７を混練装置３の下方位置まで搬送し、載置台２１を上昇させて図３に示すように冷却機構３５の間にドラム缶７を進入させ、上面の開口部側から攪拌翼ユニット３６の下端部をドラム缶７内に侵入させる。このとき第２の攪拌翼３６２の攪拌部材３６０には周方向の力が働いていないので、第２の攪拌翼３６２は自重により最下端位置である第１の攪拌翼３６１上に載置された状態となっている。   Next, the drum 7 that has received the radioactive waste is transported to a position below the kneading apparatus 3, the mounting table 21 is raised, and the drum can 7 enters between the cooling mechanisms 35 as shown in FIG. The lower end of the stirring blade unit 36 enters the drum can 7 from the side. At this time, since the circumferential force is not applied to the stirring member 360 of the second stirring blade 362, the second stirring blade 362 is placed on the first stirring blade 361 at the lowest end position by its own weight. It is in a state.

そして冷却機構３５を横方向に移動させてドラム缶７の周囲を冷却機構３５で囲み、これらドラム缶７及び冷却機構３５を上昇させてドラム缶７の開口部を蓋部材３４にて覆うと共に、混練装置３のボールネジ機構を作動させて混練動作の行われる位置まで攪拌翼ユニット３６を移動させる。このとき冷却機構３５においては冷媒の通流が開始されており、冷却機構３５にて囲まれたドラム缶７の冷却が開始されている。   Then, the cooling mechanism 35 is moved laterally to surround the drum can 7 with the cooling mechanism 35, the drum can 7 and the cooling mechanism 35 are raised, and the opening of the drum can 7 is covered with the lid member 34, and the kneading apparatus 3 The agitating blade unit 36 is moved to a position where the kneading operation is performed by operating the ball screw mechanism. At this time, the flow of the refrigerant is started in the cooling mechanism 35, and the cooling of the drum 7 surrounded by the cooling mechanism 35 is started.

ドラム缶７、冷却機構３５、攪拌翼ユニット３６を処理位置にセッティングしたら、図７（ｂ）に示すようにセメントホッパー４からのセメントの投入、及び薬液タンク５からの硬化剤などの投入を開始すると共に、モーター３１を駆動して攪拌翼ユニット３６の回転軸３６３を例えば数十ｒｐｍ〜数百ｒｐｍ程度で回転させる。放射性廃棄物にセメントを投入して混練を行うことによりセメントと放射性廃棄物中に含まれる水分とが反応して混練物が次第に固化していく。   When the drum 7, the cooling mechanism 35, and the stirring blade unit 36 are set at the processing positions, the introduction of cement from the cement hopper 4 and the addition of a curing agent from the chemical tank 5 are started as shown in FIG. At the same time, the motor 31 is driven to rotate the rotating shaft 363 of the stirring blade unit 36 at, for example, about several tens rpm to several hundred rpm. By adding cement to the radioactive waste and kneading, the cement and moisture contained in the radioactive waste react to gradually solidify the kneaded product.

このとき既述のように第２の攪拌翼３６２は、自重によって最下端位置まで降下しており、第１の攪拌翼３６１上に積み重なった状態となっている。そして本例では、上下に積み重なった攪拌翼３６１、３６２の全体が、セメントの投入を開始する前の放射性廃棄物の液溜まり内に沈んだ状態となるように放射性廃棄物の投入量や攪拌部材３６０の高さが調節されている。   At this time, as described above, the second stirring blade 362 is lowered to its lowest end position by its own weight, and is in a state of being stacked on the first stirring blade 361. In this example, the amount of radioactive waste input and the stirring member are set so that the entire stirring blades 361 and 362 stacked in the vertical direction are submerged in the liquid waste reservoir before the cement is started to be input. The height of 360 is adjusted.

このように２つの攪拌翼３６１、３６２の全体を液溜まり内に沈めた状態でセメントの投入を開始することにより、回転する各攪拌翼３６１、３６２と交差することなく、放射性廃棄物の液面に向けて直接セメントを投入することができる。この結果、攪拌翼３６１、３６２と交差したセメントがドラム缶７内に勢いよく撒き散らされて着液時に液跳ねを引き起こすといった問題の発生を抑えることができる。   In this way, by starting the cement injection with the entire two stirring blades 361 and 362 submerged in the liquid reservoir, the liquid level of the radioactive waste can be obtained without intersecting with the rotating stirring blades 361 and 362. The cement can be put directly towards As a result, it is possible to suppress the occurrence of a problem that the cement intersecting with the stirring blades 361 and 362 is vigorously scattered in the drum can 7 and causes liquid splash at the time of landing.

ここで図９に示すように、本例に係る混練装置３では、蓋部材３４にてドラム缶７の開口部を覆っているので、仮に液跳ねが発生したとしてもその液跳ねにより発生したミストがドラム缶の外へと流出して外部の空間を汚染する可能性は少ない。しかしながらこうした液跳ねによって蓋部材３４が汚染されてしまうと、混練を終えドラム缶７が搬出された後に、放射性廃棄物やこれを含む混練物の液滴が蓋部材３４から滴下してセル１２を汚染してしまうおそれもある。このため、セメント投入時における放射性廃棄物や混練物の液跳ねはできる限り抑えることが好ましい。従って本例のように２つの攪拌翼３６１、３６２が放射性廃棄物の液溜まり中に沈められている場合においても、例えば投入開始時におけるセメントの投入量は少なめに調整し、セメントを放射性廃棄物の液面に直接投入することによる液跳ねの発生をできる限り抑えることが望ましい。   Here, as shown in FIG. 9, in the kneading apparatus 3 according to this example, since the opening of the drum can 7 is covered by the lid member 34, even if liquid splash occurs, mist generated by the liquid splash is generated. There is little possibility of spilling out of the drum and contaminating the outside space. However, if the lid member 34 is contaminated by such a liquid splash, after the kneading is finished and the drum 7 is carried out, radioactive waste or droplets of the kneaded material containing the droplet are dropped from the lid member 34 to contaminate the cell 12. There is also a risk of it. For this reason, it is preferable to suppress the splashing of the radioactive waste and the kneaded material as much as possible when the cement is charged. Therefore, even when the two stirring blades 361 and 362 are submerged in the radioactive waste liquid pool as in this example, the amount of cement input at the start of charging is adjusted to a small amount, for example. It is desirable to suppress as much as possible the occurrence of liquid splash due to direct injection into the liquid surface.

こうして放射性廃棄物とセメントとの混練が開始された後、セメントや硬化剤などの投入を継続していくと、ドラム缶７内の混練物の容量が増え、混練物の上面の位置が次第に上昇していく。このとき、混練物を攪拌する第１、第２の攪拌翼３６１、３６２の各攪拌部材３６０には、混練物側からの抵抗により回転方向とは反対向きの力（抵抗力）が働く。またセメントの投入量が増えるにつれて混練物の密度は大きくなっていくので、密度変化に伴って攪拌翼３６１、３６２に働く浮力は大きくなっていく。   After the start of kneading of the radioactive waste and the cement in this manner, if the cement and the hardener are continuously added, the volume of the kneaded material in the drum 7 increases, and the position of the upper surface of the kneaded material gradually increases. To go. At this time, a force (resistance force) opposite to the rotation direction acts on each of the stirring members 360 of the first and second stirring blades 361 and 362 for stirring the kneaded product due to resistance from the kneaded product side. Further, since the density of the kneaded material increases as the amount of cement input increases, the buoyancy acting on the stirring blades 361 and 362 increases as the density changes.

このように２つの攪拌翼３６１、３６２には混練物側から種々の力が働くことになるが、既述のように第１の攪拌翼３６１は回転軸３６３に固定されているので、混練物側の状態変化に係らず第１の攪拌翼３６１は回転軸３６３と共に回転する。これに対して第２の攪拌翼３６２は回転軸３６３周りに周方向に回転自在、上下方向に昇降自在に構成されていることから、混練物から受ける力を受けて回転軸３６３に対して相対的に移動することができる。   As described above, various forces act on the two stirring blades 361 and 362 from the side of the kneaded product, but since the first stirring blade 361 is fixed to the rotating shaft 363 as described above, The first stirring blade 361 rotates together with the rotating shaft 363 regardless of the state change on the side. On the other hand, the second stirring blade 362 is configured to be rotatable in the circumferential direction around the rotation shaft 363 and to be movable up and down in the vertical direction. Can be moved.

ここで図５、図６を用いて説明したように、第２の攪拌翼３６２は走行部材３６７を螺条部３６４内に挿入した状態で保持されている。このため、回転軸３６３の外周面とボス部材３６５の内周面との間の摩擦などを無視すると、第２の攪拌翼３６２の運動は回転軸３６３側から走行部材３６７に働く力と、攪拌部材３６０を介して混練物側から走行部材３６７に働く力とのバランスによって説明することができる。   Here, as described with reference to FIGS. 5 and 6, the second stirring blade 362 is held in a state in which the traveling member 367 is inserted into the threaded portion 364. For this reason, when the friction between the outer peripheral surface of the rotating shaft 363 and the inner peripheral surface of the boss member 365 is ignored, the movement of the second stirring blade 362 is caused by the force acting on the traveling member 367 from the rotating shaft 363 side and the stirring force. This can be explained by the balance with the force acting on the traveling member 367 from the kneaded material side through the member 360.

図１１（ａ）は、回転軸３６３を側面から見たときにおける、走行部材３６７に働く力のバランスを示している。回転軸３６３は鉛直軸周りに回転している一方、走行部材３６７は螺旋状に伸びる螺条部３６４内で回転軸３６３と接しているので、回転軸３６３から走行部材３６７に対しては、回転軸３６３の回転力のうち螺条部３６４の傾斜と直交する成分Ｆｒが加わる。図中、Ｆｒｖは前記Ｆｒの垂直成分であり、Ｆｒｈはその水平成分である。また鉛直軸周りに回転する第２の攪拌翼３６２の各攪拌部材３６０が混練物から受ける抵抗力によって走行部材３６７に水平方向に作用する力をＦＤ、第２の攪拌翼３６２に働く重力から浮力を差し引いた力に基づいて走行部材３６７に作用する下向きの力をＦｇとする。 FIG. 11A shows the balance of forces acting on the travel member 367 when the rotary shaft 363 is viewed from the side. The rotating shaft 363 rotates around the vertical axis, while the traveling member 367 is in contact with the rotating shaft 363 within a spirally extending thread portion 364, so that the rotating shaft 363 rotates relative to the traveling member 367. component F r perpendicular to the inclination of the screw thread portion 364 of the rotational force of the shaft 363 is applied. In the figure, F rv is the vertical component of F r , and F rh is its horizontal component. Further, the force acting on the traveling member 367 in the horizontal direction by the resistance force received from the kneaded material by the respective stirring members 360 of the second stirring blades 362 rotating around the vertical axis is represented by F D and the gravity acting on the second stirring blades 362. A downward force acting on the traveling member 367 based on the force obtained by subtracting the buoyancy is defined as F g .

このとき、走行部材３６７が回転軸３６３から受ける力の水平成分と混練物から受ける抵抗力とが釣り合って「Ｆｒｈ＝ＦＤ」となり、また回転軸３６３から受ける力の垂直成分と下向きの力が釣り合って「Ｆｒｖ＝Ｆｇ」となったとき、走行部材３６７に働く力がバランスする。この結果、走行部材３６７は螺条部３６４内を移動することなく停止し、第２の攪拌翼３６２は回転軸３６３と一体となって回転する。 At this time, the horizontal component of the force that the traveling member 367 receives from the rotating shaft 363 and the resistance force that is received from the kneaded material are balanced to become “F rh = F D ”, and the vertical component of the force received from the rotating shaft 363 and the downward force Balance and the force acting on the traveling member 367 is balanced when “F rv = F g ”. As a result, the traveling member 367 stops without moving in the threaded portion 364, and the second stirring blade 362 rotates integrally with the rotating shaft 363.

一方、例えば図１１混練物から受ける力Ｆ’Ｄが回転軸３６３から受ける力の水平成分よりも大きくなって「Ｆｒｈ＜Ｆ’Ｄ」となると、図１１（ｃ）に示すように走行部材３６７には回転方向とは反対向きの力ΔＦ（＝Ｆ’Ｄ−Ｆｒｈ）が加わる。そして走行部材３６７に働く力ΔＦのうち、螺条部３６４の傾斜に沿った方向の成分ΔＦｘの作用によって走行部材３６７は螺条部３６４に沿って上方側へと移動し、第２の攪拌翼３６２は回転軸３６３の回転方向とは反対向きの方向（逆転方向）に相対的に回転する。また、これとは反対に「Ｆｒｈ＞Ｆ’Ｄ」となった場合には、走行部材３６７は螺条部３６４に沿って下方側に移動していくことになる。 On the other hand, for example, when the force F ′ D received from the kneaded material in FIG. 11 is larger than the horizontal component of the force received from the rotating shaft 363 and becomes “F rh <F ′ D ”, as shown in FIG. A force ΔF (= F ′ D −F rh ) opposite to the rotation direction is applied to 367. And among the force [Delta] F acting on the traveling member 367, tracking member 367 by the action of the directional component [Delta] F x along the slope of the threaded portion 364 moves to the upper side along the screw thread portion 364, the second agitating The wing 362 rotates relatively in a direction (reverse direction) opposite to the rotation direction of the rotation shaft 363. In contrast to this, when “F rh > F ′ D ” is satisfied, the traveling member 367 moves downward along the threaded portion 364.

また例えば図１２（ａ）に示すように走行部材３６７に働く下向きの力Ｆ’ｇが回転軸３６３から受ける力の垂直成分よりも小さくなって「Ｆｒｖ＞Ｆ’ｇ」となると、図１２（ｂ）に示すように走行部材３６７には上向きの力ΔＦ’（＝Ｆｒｖ−Ｆ’ｇ）が加わる。そして走行部材３６７に働く力ΔＦ’のうち、螺条部３６４の傾斜に沿った方向の成分ΔＦ’ｘの作用によって走行部材３６７は螺条部３６４に沿って上方側へと移動し、第２の攪拌翼３６２は回転軸３６３の回転方向とは反対向きの方向（逆転方向）に相対的に回転する。また、これとは反対に「Ｆｒｖ＜Ｆ’ｇ」となった場合には、走行部材３６７は螺条部３６４に沿って下方側に移動していくことになる。 Further, for example, as shown in FIG. 12A, when the downward force F ′ g acting on the traveling member 367 becomes smaller than the vertical component of the force received from the rotating shaft 363, “F rv > F ′ g ” is obtained. As shown in (b), an upward force ΔF ′ (= F rv −F ′ g ) is applied to the traveling member 367. And 'among the direction component ΔF along the slope of the threaded portion 364' force ΔF acting on the traveling member 367 traveling member 367 by the action of x is moved to the upper side along the screw thread portion 364, the second The agitating blade 362 relatively rotates in a direction (reverse direction) opposite to the rotation direction of the rotating shaft 363. On the other hand, when “F rv <F ′ g ” is satisfied, the traveling member 367 moves downward along the threaded portion 364.

こうした走行部材３６７に働く力のバランスを踏まえて混練動作実行中の第２の攪拌翼３６２の動作を説明する。今、放射性廃棄物の液溜まり内に第２の攪拌翼３６２を沈めた状態で回転軸３６３を回転させ、セメントの投入を開始すると第２の攪拌翼３６２は回転軸３６３と共に回転を始める。一方、第２の攪拌翼３６２は混練物からの抵抗力を受けて図１１（ｃ）に示すように螺条部３６４に沿って走行部材３６７を上方側に移動させる力が働く。また第２の攪拌翼３６２の全体を混練物内に沈めた状態においては、第２の攪拌翼３６２に働く浮力が大きく、走行部材３６７に下向きに作用する力は相対的に小さくなるので、図１２（ａ）、図１２（ｂ）に示したように螺条部３６４に沿って走行部材３６７を上方側に移動させる方向の力が働く。   The operation of the second stirring blade 362 during execution of the kneading operation will be described based on the balance of forces acting on the traveling member 367. Now, when the rotary shaft 363 is rotated in a state where the second stirring blade 362 is submerged in the radioactive waste liquid pool, and the cement is started to be charged, the second stirring blade 362 starts rotating together with the rotary shaft 363. On the other hand, the second stirring blade 362 receives a resistance force from the kneaded material, and acts to move the traveling member 367 upward along the threaded portion 364 as shown in FIG. In the state where the entire second stirring blade 362 is submerged in the kneaded product, the buoyancy acting on the second stirring blade 362 is large, and the force acting downward on the traveling member 367 is relatively small. 12 (a) and FIG. 12 (b), a force in the direction of moving the traveling member 367 upward along the threaded portion 364 acts.

そこで本実施の形態に係る第２の攪拌翼３６２は、回転軸３６３を例えば数十ｒｐｍ〜数百ｒｐｍ程度で回転させたときに、図１１（ｃ）、図１２（ｂ）に示した螺条部３６４に沿って上方側へ働く力の合計「ΔＦｘ＋ΔＦ’ｘ」が正の値となるように、例えば第２の攪拌翼３６２の重さが数ｋｇ〜数十ｋｇ程度に設定されている。 Therefore, the second stirring blade 362 according to the present embodiment has the screw shown in FIGS. 11C and 12B when the rotating shaft 363 is rotated at, for example, about several tens of rpm to several hundreds of rpm. For example, the weight of the second agitating blade 362 is set to about several kilograms to several tens of kilograms so that the total force “ΔF x + ΔF ′ x ” acting upward along the strip 364 becomes a positive value. ing.

この結果、回転軸３６３を回転させると、第２の攪拌翼３６２は当該回転軸３６３と共に回転しつつも、その回転速度が回転軸３６３よりもやや小さくなって、回転軸３６３の回転方向（正転方向）とは反対の方向（逆転方向）に相対的に回転しながら混練物内を上昇していく。   As a result, when the rotating shaft 363 is rotated, the second stirring blade 362 rotates together with the rotating shaft 363, but its rotational speed becomes slightly smaller than that of the rotating shaft 363, and the rotating direction of the rotating shaft 363 (normal) The inside of the kneaded material rises while rotating relatively in the opposite direction (reverse direction).

こうして混練物内を上昇していくと、第２の攪拌翼３６２はやがて混練物の上面に到達する。このときドラム缶７内の混練物は各攪拌翼３６１、３６２により攪拌されて渦巻き状の流れが形成され、この結果、混練物の上面は例えば図１０（ａ）に示すように、すり鉢状に中央部が窪んだ形状となっている。   As the inside of the kneaded material is raised in this way, the second stirring blade 362 eventually reaches the upper surface of the kneaded material. At this time, the kneaded material in the drum 7 is stirred by the respective stirring blades 361 and 362 to form a spiral flow. As a result, the upper surface of the kneaded material is, for example, in the shape of a mortar as shown in FIG. The part has a recessed shape.

このようなすり鉢状の面に第２の攪拌翼３６２が到達すると、図１０（ａ）に示すように例えば回転軸３６３寄りの攪拌部材３６０の一部が混練物から飛び出した状態となる。ここで混練物上のドラム缶７内の雰囲気は、例えば大気雰囲気であり、大気はセメントの混練物に比べて粘度がはるかに小さいので、攪拌部材３６０の一部が飛び出して大気中に露出すると、攪拌部材３６０に働く抵抗力が小さくなる。また、大気の密度は混練物と比較してはるかに小さく、攪拌部材３６０の一部が大気雰囲気に露出することによって第２の攪拌翼３６２に働く浮力も小さくなる。   When the second stirring blade 362 reaches such a mortar-shaped surface, as shown in FIG. 10 (a), for example, a part of the stirring member 360 near the rotating shaft 363 protrudes from the kneaded material. Here, the atmosphere in the drum can 7 on the kneaded material is, for example, an air atmosphere, and since the air has a much lower viscosity than the kneaded material of cement, when a part of the stirring member 360 pops out and is exposed to the air, The resistance force acting on the stirring member 360 is reduced. Further, the density of the air is much smaller than that of the kneaded material, and the buoyancy acting on the second stirring blade 362 is reduced by exposing a part of the stirring member 360 to the air atmosphere.

このように混練物から働く抵抗力及び浮力が小さくなると、上述の「ΔＦｘ＋ΔＦ’ｘ」の値が小さくなっていき、この値がゼロとなったところで図１１（ａ）に示したように走行部材３６７に働く力が釣り合う。この結果第２の攪拌翼３６２は上昇を止め、回転軸３６３と同じ回転速度で回転し、混練物の上面から攪拌部材３６０の一部が大気中に露出した状態のまま混練動作を実行することになる。 When the resistance and buoyancy acting from the kneaded material are reduced in this way, the value of the above-mentioned “ΔF x + ΔF ′ x ” decreases, and when this value becomes zero, as shown in FIG. The forces acting on the travel member 367 are balanced. As a result, the second stirring blade 362 stops rising, rotates at the same rotational speed as the rotary shaft 363, and executes the kneading operation with a part of the stirring member 360 exposed from the upper surface of the kneaded material to the atmosphere. become.

以上に説明した第２の攪拌翼３６２の動作をまとめると、回転軸３６３の回転に伴って第２の攪拌翼３６２は混練物内を上昇して、混練物の上面位置にて停止することとなる。そしてこの第２の攪拌翼３６２の動作と並行して、ドラム缶７内にはセメント及び硬化剤などが例えば連続的に投入されており、混練物の上面の位置はセメントなどの投入量の増加に伴って上昇していく。   Summarizing the operation of the second stirring blade 362 described above, the second stirring blade 362 rises in the kneaded material as the rotary shaft 363 rotates, and stops at the upper surface position of the kneaded material. Become. In parallel with the operation of the second stirring blade 362, for example, cement and a hardener are continuously fed into the drum 7 and the position of the upper surface of the kneaded material increases the amount of cement and the like to be added. It rises with it.

混練物の上面の位置が高くなると、その分だけ第２の攪拌翼３６２は混練物内に沈むことになるが、その結果、攪拌部材３６０に働く抵抗力や浮力が大きくなり、走行部材３６７に働く力が釣り合う位置まで第２の攪拌翼３６２を押し上げる。こうして第２の攪拌翼３６２は混練物の上面の位置の上昇に伴って上方側へ移動しながら、攪拌部材３６０の一部が当該混練物から露出した状態で混練動作を継続することになる。   When the position of the upper surface of the kneaded material increases, the second stirring blade 362 sinks into the kneaded material by that amount. As a result, the resistance and buoyancy acting on the stirring member 360 increase, and the traveling member 367 The second stirring blade 362 is pushed up to a position where the working force is balanced. Thus, the second stirring blade 362 continues the kneading operation with a part of the stirring member 360 exposed from the kneaded material while moving upward as the position of the upper surface of the kneaded material increases.

一方で、混練物へのセメントの投入量が増えていくと、混練物の密度が増大するので、この密度の増大に伴って攪拌部材３６０に働く浮力は大きくなる。攪拌部材３６０に働く浮力が大きくなると、第２の攪拌翼３６２は上方側へ押し上げられて混練物の上面に露出した部分の攪拌部材３６０の体積が大きくなる。この結果、ドラム缶７内の混練物の量が増えるに連れて、第２の攪拌翼３６２は混練物内から次第に押し出され、最終的には攪拌部材３６０の下端部で混練物の上面をなでるように混練動作を行うことになってしまうおそれもある。   On the other hand, as the amount of cement added to the kneaded material increases, the density of the kneaded material increases, so that the buoyancy acting on the stirring member 360 increases as the density increases. When the buoyancy acting on the stirring member 360 is increased, the second stirring blade 362 is pushed upward, and the volume of the stirring member 360 exposed on the upper surface of the kneaded material is increased. As a result, as the amount of the kneaded material in the drum can 7 increases, the second stirring blade 362 is gradually pushed out from the kneaded material, and finally the upper surface of the kneaded material is stroked at the lower end of the stirring member 360. There is also a risk that the kneading operation will be performed.

そこで本実施の形態に係る攪拌翼ユニット３６では、図４にて説明したように螺条部３６４を回転軸３６３の途中の高さ位置にて終端し、ドラム缶７内に予め設定した量の混練物を貯留した状態において、第２の攪拌翼３６２が混練物の上面から露出せず、且つ、混練物内の上面近傍の位置にて混練を行うことが可能な高さに前記終端部の高さ位置を設定している。   Therefore, in the stirring blade unit 36 according to the present embodiment, as described with reference to FIG. 4, the threaded portion 364 is terminated at a height position in the middle of the rotation shaft 363, and a kneading amount set in advance in the drum can 7. In a state where the product is stored, the second stirring blade 362 is not exposed from the upper surface of the kneaded product, and the height of the end portion is high enough to perform kneading at a position near the upper surface in the kneaded product. The position is set.

この結果、混練物の上面が螺条部３６４の終端部よりも高い位置に達したら、走行部材３６７は当該終端部にて上方向への移動が規制される。螺条部３６４の終端部に到達した第２の攪拌翼３６２はその位置にて混練動作を継続することとなる（図９、図１０（ｂ））。本例において回転軸３６３の上部側の位置に設けられた螺条部３６４の終端部は、第２の攪拌翼３６２の位置規制部に相当する。   As a result, when the upper surface of the kneaded material reaches a position higher than the end portion of the thread portion 364, the traveling member 367 is restricted from moving upward at the end portion. The second stirring blade 362 that has reached the end of the threaded portion 364 continues the kneading operation at that position (FIGS. 9 and 10B). In this example, the terminal portion of the thread portion 364 provided at the position on the upper side of the rotation shaft 363 corresponds to the position restricting portion of the second stirring blade 362.

第２の攪拌翼３６２が上述の動作を行っている期間中、第１の攪拌翼３６１はドラム缶７の底面部近傍の位置にて混練動作を継続している。このため、本実施の形態に係る混練装置３においては、上面の位置が次第に上昇していく混練物の底面近傍位置と上面近傍位置との２個所にて混練動作を行うことができる。従って、例えば上下２段の攪拌翼を所定の高さ位置に固定した従来タイプの攪拌装置と比較して、混練物が上段側の攪拌翼に到達するまでは下段側の攪拌翼のみで混練が行われ、上段側は空回りした状態となっているといった非効率な動作がなく、常に上下２箇所にて効率的に混練動作を行うことができる。   During the period when the second stirring blade 362 performs the above-described operation, the first stirring blade 361 continues the kneading operation at a position near the bottom surface of the drum can 7. For this reason, in the kneading apparatus 3 according to the present embodiment, the kneading operation can be performed at two positions, that is, the position near the bottom surface and the position near the top surface of the kneaded material in which the position of the upper surface gradually rises. Therefore, for example, as compared with a conventional type stirring device in which upper and lower two-stage stirring blades are fixed at a predetermined height, kneading is performed only with the lower-stage stirring blade until the kneaded product reaches the upper-stage stirring blade. There is no inefficient operation such that the upper side is in an idle state, and the kneading operation can always be efficiently performed at two locations at the top and bottom.

こうして予め設定した量のセメントや硬化剤などを投入し、所定時間混練動作を実行したら、回転軸３６３の回転を停止する。すると第２の攪拌翼３６２は、図１０（ｃ）に示すように重力の作用によって上昇時とは反対方向に回転しながら降下し、第１の攪拌翼３６１上に積み重なった位置にて停止する。   Thus, when a preset amount of cement, hardener, or the like is added and the kneading operation is performed for a predetermined time, the rotation of the rotating shaft 363 is stopped. Then, as shown in FIG. 10C, the second stirring blade 362 descends while rotating in the opposite direction to the upward direction due to the action of gravity, and stops at the position where it is stacked on the first stirring blade 361. .

こうして混練動作を終えたら、図８（ａ）に示すように載置台２１を降下させ、例えば混練装置３や廃棄物貯槽６から離れた位置にてドラム缶７を静置し、混練物を固化させる。しかる後、図８（ｂ）に示す如く開閉扉１４を開き、載置台２１をルーム１１側まで移動させてドラム缶７を搬出し、一連の動作を終える。搬出されたドラム缶７には、例えばドラム缶７を密閉する密閉蓋７１が取り付けられ、処理設備１外へと搬出される。   When the kneading operation is finished in this way, the mounting table 21 is lowered as shown in FIG. 8A, and the drum can 7 is allowed to stand at a position away from the kneading device 3 and the waste storage tank 6, for example, to solidify the kneaded material. . Thereafter, as shown in FIG. 8B, the opening / closing door 14 is opened, the mounting table 21 is moved to the room 11 side, the drum can 7 is carried out, and the series of operations is completed. For example, a sealed lid 71 that seals the drum can 7 is attached to the unloaded drum can 7, and the drum can 7 is unloaded from the processing facility 1.

本実施の形態に係る混練装置３（攪拌装置）によれば以下の効果がある。混練装置３の回転軸３６３に形成された螺条部３６４により、この回転軸３６３に設けられた第２の攪拌翼３６２を混練物の抵抗によって回転軸３６３に対して相対的に回転させ、当該回転軸３６３の長さ方向に沿って螺条部３６４の終端位置まで案内することができる。この結果、混練物の上面位置の上昇に合わせて第２の攪拌翼３６２を上昇させ、下部側の第１の攪拌翼３６１の作用と相俟って効率的にセメントと放射性廃棄物を効率的に混練し、短時間で均一な混練物を得ることができる。   The kneading device 3 (stirring device) according to the present embodiment has the following effects. The second stirring blade 362 provided on the rotary shaft 363 is rotated relative to the rotary shaft 363 by the resistance of the kneaded material by the threaded portion 364 formed on the rotary shaft 363 of the kneading apparatus 3, It is possible to guide the threaded portion 364 to the end position along the length direction of the rotation shaft 363. As a result, the second stirring blade 362 is raised in accordance with the rise in the upper surface position of the kneaded material, and the cement and radioactive waste are efficiently efficiently combined with the action of the first stirring blade 361 on the lower side. And a uniform kneaded product can be obtained in a short time.

ここで上述の実施の形態に係る混練装置３においては、回転軸３６３の上部側に設けた螺条部３６４の終端部を第２の攪拌翼３６２の規制位置としたが、第２の攪拌翼３６２を規制位置まで案内する手法はこの方法に限定されない。例えば、第２の攪拌翼３６２が螺条部３６４の終端部まで到達しない途中の高さ位置にてセメントの投入をやめる場合などにおいては、攪拌部材３６０の一部が混練物から露出し、走行部材３６７に働く力が釣り合って第２の攪拌翼３６２の上昇が止まる位置が、当該第２の攪拌翼３６２の規制位置となる。   Here, in the kneading apparatus 3 according to the above-described embodiment, the terminal portion of the screw portion 364 provided on the upper side of the rotating shaft 363 is set as the restriction position of the second stirring blade 362. The method of guiding 362 to the restriction position is not limited to this method. For example, in the case where the cement is not charged at a height in the middle where the second stirring blade 362 does not reach the end of the threaded portion 364, a part of the stirring member 360 is exposed from the kneaded material and travels. The position where the force acting on the member 367 balances and the second stirring blade 362 stops rising is the restriction position of the second stirring blade 362.

そして回転軸３６３に設ける螺条部３６４は、図５に示した如く溝状に形成する場合に限定されない。例えば図１３に示すように回転軸３６３の側周面から螺条部３６４をレール状に突出させ、この螺条部３６４に嵌合するようにボス部材３６５側に溝部３６８を設けてもよい。   And the thread part 364 provided in the rotating shaft 363 is not limited to when forming in groove shape as shown in FIG. For example, as shown in FIG. 13, a screw portion 364 may be projected from the side peripheral surface of the rotating shaft 363 in a rail shape, and a groove portion 368 may be provided on the boss member 365 side so as to be fitted to the screw portion 364.

以上に説明した実施の形態においては、放射性廃棄物とセメントとを混練する例を示したが、本実施の形態に係る混練装置（攪拌装置）３及び攪拌翼ユニット３６を適用可能な攪拌対象はこの例に限られるものではない。放射性廃棄物とセメントのように液体と粉体との混合、また２種類の異なる液体の混合、これら液体と粉体や２種類の液体の混合に際し、気体を吹き込む場合などに行われる各種の流動体の攪拌操作に広く適用することができる。   In the embodiment described above, an example in which radioactive waste and cement are kneaded has been shown. However, the stirring target to which the kneading device (stirring device) 3 and the stirring blade unit 36 according to the present embodiment can be applied is as follows. It is not limited to this example. Various types of flow that occur when gas is blown when mixing liquid and powder, such as radioactive waste and cement, mixing two different liquids, and mixing these liquids with powder and two types of liquid It can be widely applied to body stirring operations.

例えば図３、図４に示した攪拌翼ユニット３６は、放射性廃棄物以外の種々の流動体を攪拌する攪拌装置に適用できる。この場合には、攪拌翼ユニット３６に人がアクセスすることも可能なので、攪拌装置の設置された現場にて攪拌翼ユニット３６のメンテナンスを行う場合もありうる。ここで攪拌翼ユニット３６は、既述のように攪拌動作を実行していないときには第２の攪拌翼３６２が回転軸３６３の下端部まで降下して第１の攪拌翼３６１上に載置された状態となり、例えば攪拌装置の設けられている施設の床面に近くの比較的アクセスしやすい位置に２つの攪拌翼３６１、３６２がまとめられることとなる。このため、例えば攪拌装置が大型である場合などには、２つの攪拌翼３６１、３６２に同時にアクセスすることが可能となり、メンテナンスが行いやすくなるといった効果もある。   For example, the stirring blade unit 36 shown in FIGS. 3 and 4 can be applied to a stirring device that stirs various fluids other than radioactive waste. In this case, since the person can access the stirring blade unit 36, the maintenance of the stirring blade unit 36 may be performed at the site where the stirring device is installed. Here, when the stirring blade unit 36 is not performing the stirring operation as described above, the second stirring blade 362 is lowered to the lower end portion of the rotating shaft 363 and placed on the first stirring blade 361. For example, the two agitating blades 361 and 362 are gathered at a relatively accessible position near the floor of the facility where the agitating device is provided. For this reason, for example, when the stirring device is large, it is possible to access the two stirring blades 361 and 362 at the same time, and there is an effect that the maintenance becomes easy.

さらに回転軸３６３の周りに設けられた螺条部３６４を利用して、当該回転軸３６３の長さ方向に攪拌翼を案内する攪拌翼ユニット及びこの攪拌ユニットを備えた攪拌装置の構成は、図１〜図１３に示した例に限定されるものではなく、種々の構成を採用することができる。以下図１４〜図１９を用いて説明する各例では、各種流動体を攪拌槽７０内にて攪拌混合する一般的な例を述べる。これらの図において図３〜図６等に示した第１の実施の形態に係る攪拌翼ユニット３６（攪拌装置３）と同様の構成要素には、これらと同じ符号を付してある。   Further, the configuration of the stirring blade unit that guides the stirring blade in the length direction of the rotation shaft 363 using the screw portion 364 provided around the rotation shaft 363 and the stirring device including the stirring unit are illustrated in FIG. It is not limited to the example shown in FIGS. 1-13, A various structure is employable. In the examples described below with reference to FIGS. 14 to 19, general examples in which various fluids are stirred and mixed in the stirring tank 70 will be described. In these drawings, the same components as those of the stirring blade unit 36 (stirring device 3) according to the first embodiment shown in FIGS. 3 to 6 are denoted by the same reference numerals.

図１４（ａ）〜図１４（ｃ）は、第２の実施の形態に係る攪拌翼ユニット３６を示している。第２の実施の形態に係る攪拌翼ユニット３６は、上下２つの攪拌翼３６２、３６１の双方が回転軸３６３に沿って移動可能となっている点が、上部側の第２の攪拌翼３６２のみを移動可能とした第１の実施の形態と異なっている。   FIG. 14A to FIG. 14C show the stirring blade unit 36 according to the second embodiment. In the stirring blade unit 36 according to the second embodiment, only the upper second stirring blade 362 is that both the upper and lower two stirring blades 362 and 361 are movable along the rotation shaft 363. This is different from the first embodiment in which can be moved.

第２の実施の形態に係る攪拌翼ユニット３６によれば、回転軸３６３には、第１の攪拌翼３６１を案内する螺条部３６４ｂ及び、第２の攪拌翼３６２を案内する螺条部３６４ａが互いに平行に設けられている。そして、これら螺条部３６４ｂ、３６４ａは、回転軸３６３の下部側の領域において長さ方向に互いに重複する領域に設けられている。一方、第１の攪拌翼３６１側の螺条部３６４ｂは回転軸３６３の中間の高さ位置で終端されており、第２の攪拌翼３６２側の螺条部３６４ａは、第１の攪拌翼３６１側の螺条部３６４ａよりも上方側まで伸びだしている。これにより第１の攪拌翼３６１、第２の攪拌翼３６２は各々異なる高さ位置まで上昇することができる。   According to the stirring blade unit 36 according to the second embodiment, the rotating shaft 363 has a thread portion 364b that guides the first stirring blade 361 and a thread portion 364a that guides the second stirring blade 362. Are provided in parallel to each other. The screw portions 364b and 364a are provided in regions overlapping with each other in the length direction in the region on the lower side of the rotating shaft 363. On the other hand, the screw portion 364b on the first stirring blade 361 side is terminated at an intermediate height position of the rotating shaft 363, and the screw portion 364a on the second stirring blade 362 side is terminated with the first stirring blade 361. It extends to the upper side of the screw portion 364a on the side. Accordingly, the first stirring blade 361 and the second stirring blade 362 can be raised to different height positions.

そして攪拌槽７０へ混合対象の流動体の供給を開始して回転軸３６３を正転させると（図１４（ａ））、２つの攪拌翼３６１、３６２はそれぞれの螺条部３６４ａ、３６４ｂに案内され、流動体の上面と共に上昇していく（図１４（ｂ））。そして、第１の攪拌翼３６１が螺条部３６４ｂの終端部に到達すると、第１の攪拌翼３６１の上昇はその位置で規制される一方、第２の攪拌翼３６２は流動体の上面と共にさらに上昇し、螺条部３６４ａの終端位置にて規制される。ここで回転軸３６３の下端部に、回転軸３６３に固定された第３の攪拌翼をさらに設けてもよいことは勿論である。   Then, when the fluid to be mixed is started to be supplied to the stirring tank 70 and the rotating shaft 363 is rotated forward (FIG. 14A), the two stirring blades 361 and 362 are guided to the respective screw portions 364a and 364b. Then, it rises with the upper surface of the fluid (FIG. 14B). When the first stirring blade 361 reaches the end of the threaded portion 364b, the rising of the first stirring blade 361 is restricted at that position, while the second stirring blade 362 further includes the upper surface of the fluid. It rises and is regulated at the end position of the thread portion 364a. Of course, a third stirring blade fixed to the rotating shaft 363 may be further provided at the lower end of the rotating shaft 363.

図１５（ａ）は昇降する攪拌翼３６２を一つだけ設けた第３の実施の形態に係る攪拌翼ユニット３６を示している。本例に係る攪拌翼ユニット３６では、図１０（ａ）〜図１０（ｃ）に示した第１の実施の形態に係る攪拌翼３６２と同様の原理により攪拌翼３６２を上昇させ（図１５（ｂ））、当該攪拌翼３６２が螺条部３６４の終端部に達したら回転軸３６３の回転を停止して（あるいは逆転させて）、攪拌翼を回転させながら降下させる（図（ｃ））。その後、回転軸３６３の正転と停止（または正転と逆転）を繰り返して、攪拌翼３６２を上下動させながら攪拌を行うことにより、攪拌槽７０内の流動体を高さ方向に満遍なく攪拌することができる。   FIG. 15A shows a stirring blade unit 36 according to the third embodiment in which only one stirring blade 362 that moves up and down is provided. In the stirring blade unit 36 according to the present example, the stirring blade 362 is raised according to the same principle as that of the stirring blade 362 according to the first embodiment shown in FIGS. 10 (a) to 10 (c) (FIG. 15 ( b)) When the stirring blade 362 reaches the terminal end of the threaded portion 364, the rotation of the rotating shaft 363 is stopped (or reversed), and the stirring blade is lowered while rotating (FIG. (c)). Thereafter, the fluid in the agitation tank 70 is uniformly agitated in the height direction by repeating normal rotation and stop (or normal rotation and reverse rotation) of the rotating shaft 363 and agitating while moving the agitating blade 362 up and down. be able to.

図１６に示す第４の実施の形態は、螺条部３６４の終端部に、当該螺条部３６４を下方側へ向けて傾斜させた落とし込み部３６９を設けた攪拌翼ユニット３６である。本例に係る攪拌翼ユニット３６において、落とし込み部３６９は、第２の攪拌翼３６２の走行部材３６７が落とし込まれる部位であり、第２の攪拌翼３６２を当該高さ位置に固定する役割を果たす。この結果、２回目以降の攪拌動作においては、２つの攪拌翼３６１、３６２は、上下２段に固定された高さ位置にて流動体の攪拌を実行することになる。   The fourth embodiment shown in FIG. 16 is a stirring blade unit 36 in which a dropping portion 369 in which the threaded portion 364 is inclined downward is provided at the terminal portion of the threaded portion 364. In the stirring blade unit 36 according to this example, the dropping unit 369 is a portion into which the traveling member 367 of the second stirring blade 362 is dropped, and plays a role of fixing the second stirring blade 362 at the height position. . As a result, in the second and subsequent stirring operations, the two stirring blades 361 and 362 perform the stirring of the fluid at the height position fixed in the upper and lower two stages.

そして第２の攪拌翼３６２のメンテナンスを行う場合には、例えば回転軸３６３を逆転方向に急激に回転させることにより第２の攪拌翼３６２に働く慣性力を利用して走行部材３６７を落とし込み部３６９内から抜け出させ、回転軸３６３を停止または逆転させることにより第２の攪拌翼３６２を回転軸３６３の下端部まで降下させることができる。ここで落とし込み部３６９は、図１６に示したように下向きに傾斜させる場合に限定されず、例えば垂直方向下向きとなるように設けてもよい。この場合は、回転軸３６３を反転させることでは走行部材３６７を落とし込み部３６９内から抜け出させることは困難になるが、少なくとも使用開始時には第２の攪拌翼３６２は回転軸３６３の下端部に位置しているので、例えば第２の攪拌翼３６２の取り付け時の作業などが容易になる。   When performing maintenance of the second stirring blade 362, for example, the traveling member 367 is dropped by using the inertial force acting on the second stirring blade 362 by rapidly rotating the rotating shaft 363 in the reverse direction. The second stirring blade 362 can be lowered to the lower end of the rotating shaft 363 by exiting from the inside and stopping or reversing the rotating shaft 363. Here, the dropping portion 369 is not limited to the case where it is inclined downward as shown in FIG. 16, and may be provided so as to be downward in the vertical direction, for example. In this case, it is difficult to cause the traveling member 367 to drop out of the dropping portion 369 by reversing the rotating shaft 363, but the second stirring blade 362 is positioned at the lower end portion of the rotating shaft 363 at least at the start of use. Therefore, for example, work when the second stirring blade 362 is attached becomes easy.

このほか、例えば図１０（ａ）に示した攪拌翼ユニット３６では、攪拌部材３６０の一部が流動体の上面から露出した状態で走行部材３６７に働く力が釣り合い、第２の攪拌翼３６２の上昇が規制される場合を示した。これに対して、第２の攪拌翼３６２全体が流動体内を流動体内に沈めた状態であっても図１１（ａ）に示したように螺条部３６４に働く力が釣り合った状態とすることができれば、第２の攪拌翼３６２の上昇を規制することができる。   In addition, in the stirring blade unit 36 shown in FIG. 10A, for example, the force acting on the traveling member 367 is balanced in a state where a part of the stirring member 360 is exposed from the upper surface of the fluid, and the second stirring blade 362 The case where the rise is regulated is shown. On the other hand, even when the entire second stirring blade 362 is in a state where the fluid is submerged in the fluid, the force acting on the threaded portion 364 is balanced as shown in FIG. If it is possible, the rise of the second stirring blade 362 can be regulated.

例えば、攪拌槽７０の底部に密度の大きな液体の液溜まりを形成し、この中に昇降可能に構成された攪拌翼３６２を沈め、当該液溜まりに密度の小さな液体を注入しながら回転軸３６３の回転を開始する。すると攪拌翼３６２は液体からの抵抗力と浮力を受けて螺条部３６４に案内されながら上昇を開始するが、密度の小さな液体を注入することにより、攪拌槽７０内の液体の密度は次第に低下していく。この結果、攪拌翼３６２に働く浮力は次第に小さくなり、当該走行部材３６７に下向きに働く力が大きくなっていく。そして、既述のΔＦ’ｘが負の値となり、螺条部３６４の傾斜に沿って走行部材３６７に対して上方側に働く力の合計「ΔＦｘ＋ΔＦ’ｘ」がゼロとなれば、攪拌翼３６２全体が液体中に沈んだ状態のままであっても攪拌翼３６２の上昇は停止し、この位置が当該攪拌翼３６２の停止位置となる。 For example, a liquid pool of a high density liquid is formed at the bottom of the agitation tank 70, a stirring blade 362 configured to be movable up and down is submerged therein, and a liquid of a low density is injected into the liquid pool while Start spinning. Then, the stirring blade 362 starts to rise while receiving resistance and buoyancy from the liquid and is guided by the threaded portion 364. By injecting a liquid having a low density, the density of the liquid in the stirring tank 70 gradually decreases. I will do it. As a result, the buoyancy acting on the stirring blade 362 gradually decreases, and the force acting downward on the traveling member 367 increases. Then, if the above-described ΔF ′ x becomes a negative value and the total force “ΔF x + ΔF ′ x ” acting on the traveling member 367 along the inclination of the threaded portion 364 becomes zero, the stirring is performed. Even if the entire blade 362 remains submerged in the liquid, the ascending blade 362 stops rising, and this position becomes the stop position of the stirring blade 362.

以上に説明した各実施の形態では回転軸３６３を垂直方向に配置した例を説明したが、例えば回転軸３６３を水平方向に配置する場合も本発明の技術的範囲に含まれる。例えば、図１７（ａ）、図１７（ｂ）は回転軸３６３を水平方向に配置した第５の実施の形態に係る攪拌翼ユニット３６（攪拌装置３）を示している。回転軸３６３を垂直に配置する場合と異なり、回転軸３６３を水平に配置する場合には、攪拌翼３６２に働く浮力と重力とのバランスを利用して攪拌翼３６２の移動を規制することができない。このため、例えば攪拌翼の移動範囲を予め設定しておき、攪拌翼３６２が当該移動範囲の端部に達したら回転軸３６３の回転方向を逆向きにして攪拌翼３６２の移動方向を反転させることによりこの移動範囲の両端を規制位置とすることができる。   In each of the embodiments described above, the example in which the rotation shaft 363 is arranged in the vertical direction has been described. However, for example, the case where the rotation shaft 363 is arranged in the horizontal direction is also included in the technical scope of the present invention. For example, FIGS. 17A and 17B show the stirring blade unit 36 (stirring device 3) according to the fifth embodiment in which the rotating shaft 363 is disposed in the horizontal direction. Unlike the case where the rotating shaft 363 is disposed vertically, when the rotating shaft 363 is disposed horizontally, the movement of the stirring blade 362 cannot be regulated by utilizing the balance between buoyancy acting on the stirring blade 362 and gravity. . For this reason, for example, the moving range of the stirring blade is set in advance, and when the stirring blade 362 reaches the end of the moving range, the rotation direction of the rotating shaft 363 is reversed and the moving direction of the stirring blade 362 is reversed. Thus, both ends of the movement range can be set as the restriction positions.

回転軸３６３を水平に配置する場合にも、図１８（ａ）、図１８（ｂ）に示すように回転軸３６３に複数の攪拌翼３６２ａ〜３６２ｃを設け、これらの各々に対応する螺条部３６４ａ〜３６４ｃによって攪拌翼３６２ａ〜３６２ｃが案内されるように構成してもよい。図１８（ａ）、図１８（ｂ）に示した第６の実施の形態においても、図１４（ａ）〜図１４（ｃ）の第２の実施の形態と同様に、各螺条部３６４ａ〜３６４ｃは互いに平行に設けられている。また各攪拌翼３６２ａ〜３６２ｃが共通に通過する領域においては、当該領域を通過する攪拌翼３６２ａ〜３６２ｃに対応した各螺条部３６４ａ〜３６４ｃが回転軸３６３の長さ方向に重複して設けられている点も、既述の第２の実施の形態と同様である。   Even when the rotary shaft 363 is arranged horizontally, a plurality of stirring blades 362a to 362c are provided on the rotary shaft 363 as shown in FIGS. 18 (a) and 18 (b), and screw portions corresponding to each of these are provided. You may comprise so that stirring blade 362a-362c may be guided by 364a-364c. In the sixth embodiment shown in FIGS. 18 (a) and 18 (b) as well, as in the second embodiment shown in FIGS. 14 (a) to 14 (c), each screw portion 364a. ˜364c are provided in parallel to each other. Further, in the region where the stirring blades 362a to 362c pass in common, the thread portions 364a to 364c corresponding to the stirring blades 362a to 362c passing through the region are provided overlapping in the length direction of the rotating shaft 363. This is also the same as in the second embodiment described above.

図１９（ａ）、図１９（ｂ）は、上述の第６の実施の形態に係る攪拌翼ユニット３６の例えば通常運転時の状態（図１９（ａ））と、メンテナンス時の状態（図１９（ｂ））とを示している。通常運転時には、回転軸３６３の回転方向を正転、逆転させ、所定の移動範囲内で各攪拌翼３６４ａ〜３６４ｃを移動させながら攪拌を実行し、メンテナンス時はこれら攪拌翼３６４ａ〜３６４ｃを一箇所に集めることによって攪拌翼３６４ａ〜３６４ｃのメンテナンスが容易になる。特に排水処理設備など、一辺が数ｍ〜数十ｍの大型の攪拌槽７０で攪拌動作を行う場合などにおいて有用となる。   19 (a) and 19 (b) show, for example, the state during normal operation (FIG. 19 (a)) and the state during maintenance (FIG. 19) of the stirring blade unit 36 according to the sixth embodiment described above. (B)). During normal operation, the rotation direction of the rotary shaft 363 is rotated forward and reverse, and stirring is performed while moving the stirring blades 364a to 364c within a predetermined moving range. During maintenance, the stirring blades 364a to 364c are moved to one place. As a result, the maintenance of the stirring blades 364a to 364c is facilitated. This is particularly useful when the stirring operation is performed in a large stirring tank 70 having a side of several meters to several tens of meters, such as a wastewater treatment facility.

また図１４（ａ）〜図１４（ｃ）の攪拌翼３６１、３６２や図１８（ａ）〜図１８（ｂ）に示した攪拌翼３６２ａ〜３６２ｃのように複数の攪拌翼を移動可能に構成する場合において、これらの攪拌翼は別々の螺条部によって案内する場合に限定されず、共通の螺条部３６４で案内する構成としてもよい。例えば各々の攪拌翼を異なるサイズ、重さとして、各攪拌翼に加わる流動体からの抵抗力や浮力、重力を調節し、各々の攪拌翼が異なる速度で回転軸３６３の長さ方向に案内される構成とすることにより、これらの攪拌翼が互いに干渉せず共通の螺条部３６４に沿って移動する構成とすることができる。
なお、攪拌部材３６０の形状や枚数は図示したものに限定されず、混合対象にあわせて最適な形状等を選定できる。 Also, a plurality of stirring blades can be moved, such as the stirring blades 361 and 362 in FIGS. 14A to 14C and the stirring blades 362a to 362c shown in FIGS. 18A to 18B. In this case, these agitating blades are not limited to the case where they are guided by separate screw portions, and may be configured to be guided by a common screw portion 364. For example, each agitating blade has a different size and weight, and the resistance force, buoyancy, and gravity from the fluid applied to each agitating blade are adjusted, and each agitating blade is guided in the length direction of the rotating shaft 363 at a different speed. With this configuration, the stirring blades can move along the common screw portion 364 without interfering with each other.
The shape and the number of the stirring members 360 are not limited to those shown in the figure, and an optimal shape or the like can be selected according to the mixing target.

１ 処理設備
１１ ルーム
１２ セル
２ 搬送装置
３ 混練装置、攪拌装置
３６ 攪拌翼ユニット
３６０ 攪拌部材
３６１ 第１の攪拌翼
３６２、３６２ａ〜３６２ｃ
第２の攪拌翼、攪拌翼
３６３ 回転軸
３６４、３６４ａ〜３６４ｃ
螺条部
４ セメントホッパー
５ 薬液タンク
６ 廃棄物貯槽
７ ドラム缶
７０ 攪拌槽
８ 制御部 DESCRIPTION OF SYMBOLS 1 Processing equipment 11 Room 12 Cell 2 Conveyance apparatus 3 Kneading apparatus, stirring apparatus 36 Stirring blade unit 360 Stirring member 361 1st stirring blade 362, 362a-362c
Second stirring blade, stirring blade 363 Rotating shaft 364, 364a-364c
Screw part 4 Cement hopper 5 Chemical tank 6 Waste storage tank 7 Drum can 70 Stirrer tank 8 Control part

Claims (9)

流動体を攪拌する装置において、
回転軸と、
この回転軸を回転させる駆動部と、
前記回転軸に螺合され、流動体を攪拌するための攪拌翼と、
前記回転軸に形成され、当該回転軸を正転させたときに前記攪拌翼が流動体の抵抗によって当該回転軸に対して相対的に回転することにより当該回転軸の長さ方向に沿って規制位置まで案内される螺条部と、を備えたことを特徴とする攪拌装置。 In the apparatus for stirring the fluid,
A rotation axis;
A drive unit for rotating the rotating shaft;
A stirring blade screwed to the rotating shaft for stirring the fluid;
It is formed on the rotating shaft, and when the rotating shaft is rotated forward, the stirring blade is controlled along the length direction of the rotating shaft by rotating relative to the rotating shaft by the resistance of the fluid. A stirrer characterized by comprising a thread portion guided to a position. 前記攪拌翼が規制位置に置かれている状態で回転軸を正転させることにより当該攪拌翼が回転軸と共に回転することを特徴とする請求項１記載の攪拌装置。   The stirring device according to claim 1, wherein the stirring blade rotates together with the rotating shaft by rotating the rotating shaft in a normal direction in a state where the stirring blade is placed at the restriction position. 前記規制位置は、回転軸に設けられた位置規制部により攪拌翼の移動が規制される位置であることを特徴とする請求項１または２記載の攪拌装置。   The stirring device according to claim 1, wherein the restriction position is a position where movement of the stirring blade is restricted by a position restriction portion provided on the rotating shaft. 前記回転軸は上下方向に伸びるように設けられ、
前記規制位置は、前記攪拌翼の一部が流動体の上面から露出することにより、前記攪拌翼に働く力が釣り合って攪拌翼の移動が規制される位置であることを特徴とする請求項１または２記載の攪拌装置。 The rotating shaft is provided to extend in the vertical direction,
2. The restriction position is a position where a part of the stirring blade is exposed from an upper surface of a fluid, and thereby the force acting on the stirring blade is balanced and the movement of the stirring blade is restricted. Or the stirring apparatus of 2. 前記回転軸には、前記攪拌翼以外に他の攪拌翼が設けられていることを特徴とする請求項１ないし４のいずれか一項に記載された攪拌装置。   The stirring device according to any one of claims 1 to 4, wherein the rotating shaft is provided with another stirring blade in addition to the stirring blade. 前記他の攪拌翼は回転軸に固定されていることを特徴とする請求項５記載の攪拌装置。   6. The stirring device according to claim 5, wherein the other stirring blade is fixed to a rotating shaft. 前記回転軸に形成され、当該回転軸を正転させたときに前記他の攪拌翼が流動体の抵抗によって当該回転軸に対して相対的に回転することにより当該回転軸の長さ方向に沿って案内される、前記螺条部とは異なる他の螺条部と、
前記回転軸を正転させたときに前記他の攪拌翼における回転軸の長さ方向の移動を規制するために、前記回転軸の長さ方向において前記規制位置とは異なる位置に設けられた位置規制部と、を備えたことを特徴とする請求項５記載の攪拌装置。 Formed on the rotating shaft, and when the rotating shaft is rotated forward, the other stirring blade rotates relative to the rotating shaft by the resistance of the fluid, thereby along the length direction of the rotating shaft. Another threaded portion different from the threaded portion guided by,
A position provided at a position different from the restriction position in the length direction of the rotation shaft in order to restrict movement of the rotation shaft in the length direction of the other stirring blade when the rotation shaft is rotated forward. The stirring device according to claim 5, further comprising a restriction portion. 前記螺条部の形成領域と他の螺条部の形成領域とは、回転軸の長さ方向において互いに重複していることを特徴とする請求項７記載の攪拌装置。   The stirring device according to claim 7, wherein the formation region of the screw portion and the formation region of the other screw portion overlap each other in the length direction of the rotation shaft. 請求項１ないし８のいずれか一項に記載された、回転軸及び攪拌翼からなることを特徴とする攪拌翼ユニット。   A stirring blade unit comprising the rotating shaft and the stirring blade according to any one of claims 1 to 8.
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105922468A (en) * 2016-06-08 2016-09-07 过小吉 Raw material mixing device in plastic production process
CN106042205A (en) * 2016-06-08 2016-10-26 过小吉 Stereoscopic stirring device for mixing plastic raw materials
CN106079136A (en) * 2016-06-08 2016-11-09 过小吉 Plastics-production agitating device
CN106079134A (en) * 2016-06-08 2016-11-09 过小吉 Plastic raw materials mixing arrangement
CN107413238A (en) * 2017-07-31 2017-12-01 杭州跟策科技有限公司 Powder humidifier and powder air-humidification method
CN107970838A (en) * 2017-11-20 2018-05-01 长沙市凤英机械科技有限公司 A kind of industrial high viscosity liquid mixing arrangement
CN114568453A (en) * 2022-03-25 2022-06-03 内江市香趣食品有限公司 Novel processingequipment is used in preparation of lard residue product
CN115340794A (en) * 2022-08-19 2022-11-15 由星来 Waterproof coating and preparation process thereof
KR20230001711A (en) * 2021-06-29 2023-01-05 박진수 Smart hybrid filling system and smart hybrid filling method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0192235U (en) * 1987-12-07 1989-06-16
JP3001064U (en) * 1994-02-15 1994-08-16 川研ファインケミカル株式会社 Liquid level following stirrer
JPH08108057A (en) * 1994-10-12 1996-04-30 Shinto Kagaku Kk Vertically movable rotary agitator
JP2006326377A (en) * 2005-05-23 2006-12-07 Hitachi Plant Technologies Ltd Stirrer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0192235U (en) * 1987-12-07 1989-06-16
JP3001064U (en) * 1994-02-15 1994-08-16 川研ファインケミカル株式会社 Liquid level following stirrer
JPH08108057A (en) * 1994-10-12 1996-04-30 Shinto Kagaku Kk Vertically movable rotary agitator
JP2006326377A (en) * 2005-05-23 2006-12-07 Hitachi Plant Technologies Ltd Stirrer

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105922468A (en) * 2016-06-08 2016-09-07 过小吉 Raw material mixing device in plastic production process
CN106042205A (en) * 2016-06-08 2016-10-26 过小吉 Stereoscopic stirring device for mixing plastic raw materials
CN106079136A (en) * 2016-06-08 2016-11-09 过小吉 Plastics-production agitating device
CN106079134A (en) * 2016-06-08 2016-11-09 过小吉 Plastic raw materials mixing arrangement
CN107413238A (en) * 2017-07-31 2017-12-01 杭州跟策科技有限公司 Powder humidifier and powder air-humidification method
CN107970838A (en) * 2017-11-20 2018-05-01 长沙市凤英机械科技有限公司 A kind of industrial high viscosity liquid mixing arrangement
KR20230001711A (en) * 2021-06-29 2023-01-05 박진수 Smart hybrid filling system and smart hybrid filling method
KR102519708B1 (en) * 2021-06-29 2023-04-10 박진수 Smart hybrid filling system and smart hybrid filling method
CN114568453A (en) * 2022-03-25 2022-06-03 内江市香趣食品有限公司 Novel processingequipment is used in preparation of lard residue product
CN115340794A (en) * 2022-08-19 2022-11-15 由星来 Waterproof coating and preparation process thereof

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