JP2014000763A

JP2014000763A - Sprayer of bentonite-based material

Info

Publication number: JP2014000763A
Application number: JP2012138626A
Authority: JP
Inventors: Hiroyuki Ishihama; 裕幸石濱; Isao Ogiwara; 績荻原; Akio Nakakoshi; 章雄中越; Masakazu Chijimatsu; 正和千々松; Makoto Hiraki; 真開; Hideo Arai; 英夫新井; Hidetada Minowa; 英中箕輪
Original assignee: Hazama Ando Corp; Japan Foundation Engineering Co Ltd
Current assignee: Hazama Ando Corp; Japan Foundation Engineering Co Ltd
Priority date: 2012-06-20
Filing date: 2012-06-20
Publication date: 2014-01-09
Anticipated expiration: 2032-06-20
Also published as: JP5940907B2

Abstract

PROBLEM TO BE SOLVED: To improve workability by preventing a material from sticking to an inner wall of an iron pot and a blade.SOLUTION: A device M is formed in a curved surface shape so that a plurality of blades 22 and 42 used for rotary blade mechanisms 2 and 4 become an arch as a whole, both surfaces on the base end side become a plane shape of extending in a substantially straight line shape, and both surfaces on the tip side gradually curve to one surface side on the tip side from a substantially intermediate part to a tip part. These blades 22 and 42 are successively installed on rotary shafts 21 and 41 by changing a predetermined angle phase at an interval of a dimension corresponding to a tip side ejection distance to the right-angled direction from one surface on a base end side of the respective blades 22 and 42 or a dimension smaller than this, with the tip side thereof directed to outlets 12, 32 side.

Description

本発明は、放射性廃棄物の処分施設その他遮水が必要な施工面にベントナイト系材料を吹き付けるのに使用するベントナイト系材料の吹付け装置に関する。 TECHNICAL FIELD The present invention relates to a bentonite-based material spraying apparatus used for spraying bentonite-based material to a radioactive waste disposal facility or other construction surface requiring water shielding.

放射性廃棄物処分場を地下に構築する際に、地下水の浸入などを防止する目的で施工面にベントナイトを含有する止水層が形成される。このような止水層を形成する方法として、ベントナイト系材料を施工面に吹き付ける工法が知られており、これに用いる従来の吹付け装置が特許文献１、２などに開示されている。 When constructing a radioactive waste disposal site in the basement, a water-stopping layer containing bentonite is formed on the construction surface for the purpose of preventing the ingress of groundwater. As a method for forming such a water-stopping layer, a method of spraying bentonite-based material onto a construction surface is known, and conventional spraying apparatuses used for this are disclosed in Patent Documents 1 and 2, for example.

特許文献１は、乾式の吹付け装置に関するもので、この吹付け装置は、水などの液体を含むことなくベントナイト系材料を空練りするミキサ、圧縮空気を供給するコンプレッサ、水を供給するポンプ及びタンク、ベントナイト系材料と水とを混合するノズルを備え、ミキサ、コンプレッサ及びノズルが三又ホースにより接続され、ノズルとポンプ及びタンクが他のホースにより接続されて構成され、ミキサで空練りしたベントナイト系材料をコンプレッサによってノズルへ圧送するとともに、ポンプによりタンク内の水をノズルに供給し、ノズルでベントナイト系材料と水とを混合して吹き出すようになっている。 Patent Document 1 relates to a dry-type spraying device, which includes a mixer for kneading bentonite-based material without containing a liquid such as water, a compressor for supplying compressed air, a pump for supplying water, and Bentonite with tank, bentonite material and water mixing nozzle, mixer, compressor and nozzle connected by three-hose hose, nozzle, pump and tank connected by other hose, and kneaded with mixer The system material is pumped to the nozzle by a compressor, the water in the tank is supplied to the nozzle by a pump, and the bentonite material and water are mixed and blown out by the nozzle.

特許文献２は、湿式の吹付け装置に関するもので、この吹付け装置は、内部を加圧、減圧する手段、回転軸と複数の羽根とからなる撹拌機を有し、粘性土を撹拌する上釜、及び内部を加圧、減圧する手段、回転軸と複数の羽根とからなる材料送り機構を有し、粘性土を送る下釜を具備する吹付機、吹付機にエアを供給するコンプレッサ、吹付機の出口側に接続されるホース、及びホースに接続され、粘性土を吹き出すノズルなどを備えて構成され、上釜で粘性土（土質材料としての砂と低透水性材料としてベントナイトとを混合して成る人工粘性土）を撹拌混合し、下釜で粘性土を送り、この粘性土をコンプレッサからのエアの圧力により下釜の出口から勢い良く吹き出し、ノズルの先端より吹付けるようになっている。 Patent Document 2 relates to a wet spraying device, and this spraying device has means for pressurizing and depressurizing the inside, a stirrer composed of a rotating shaft and a plurality of blades, and stirs viscous soil. A pot, a means for pressurizing and depressurizing the inside, a spraying machine having a material feeding mechanism composed of a rotating shaft and a plurality of blades and having a lower pot for feeding viscous soil, a compressor for supplying air to the spraying machine, and a spraying machine The hose is connected to the outlet side of the pipe, and the nozzle is connected to the hose and blows out the clay, and the clay in the upper pot is mixed with clay (sand as the soil material and bentonite as the low water permeability material). The artificial clay soil) is stirred and mixed, and the clay is fed by the lower pot. The clay is blown out from the outlet of the lower pot by the air pressure from the compressor and blown from the tip of the nozzle.

この他に、ベントナイト系材料を凍結混合して吹付ける形式の専用練混ぜ装置などが提案されている。 In addition to this, a dedicated mixing device of a type in which bentonite-based material is freeze-mixed and sprayed has been proposed.

特開２００７−３１２１４公報JP 2007-31214 A 特開２０００−２７３８４２公報JP 2000-273842 A

しかしながら、上記従来のベントナイト系材料の吹付け装置では、次のような問題がある。
（１）特許文献１の吹付け装置の場合、乾式のため、ベントナイト系材料に加水が必要である。この場合、材料と水とをノズルで混合して吹き付けるため、材料をノズルから均一に連続して吹き出す必要があり、品質（含水比）の維持が難しい。
（２）特許文献２の吹付け装置の場合、この装置の構造形式から、吸水材が必要である。この装置の場合、下釜内の材料送り機構が、回転軸と複数の羽根とからなり、複数の羽根がそれぞれ回転軸にこの回転軸の回転方向に対して斜めに取り付けられて連続的に配列されるため、この下釜内で、ベントナイト系材料に送る方向の力と押しつぶす方向の力が常に作用して、材料が羽根に付着しやすく、材料が羽根に付着して羽根と羽根の間に詰まると、材料の撹拌性能や掻き取り能力が低下して、施工性が悪くなる。
（３）ベントナイト系材料を凍結混合して吹付ける形式の装置の場合、吹付機、コンプレッサの他に、さらに凍結装置やこれに付随する各種の設備を必要とし、コストが大幅に増大する。 However, the conventional bentonite-based material spraying apparatus has the following problems.
(1) In the case of the spraying device of Patent Document 1, since it is a dry type, it is necessary to add water to the bentonite material. In this case, since the material and water are mixed and sprayed by the nozzle, it is necessary to blow out the material uniformly and continuously from the nozzle, and it is difficult to maintain the quality (water content ratio).
(2) In the case of the spraying device of Patent Document 2, a water-absorbing material is necessary due to the structural form of this device. In the case of this apparatus, the material feeding mechanism in the lower hook is composed of a rotation shaft and a plurality of blades, and the plurality of blades are respectively attached to the rotation shafts obliquely with respect to the rotation direction of the rotation shaft and continuously arranged. Therefore, in this lower pot, when the force in the direction of sending to the bentonite material and the force in the direction of crushing always act, the material tends to adhere to the blade, and the material adheres to the blade and clogs between the blades , The stirring performance and scraping ability of the material are lowered, and the workability is deteriorated.
(3) In the case of an apparatus of a type in which bentonite-based material is freeze-mixed and sprayed, in addition to a sprayer and a compressor, a freezing apparatus and various facilities associated therewith are required, and the cost is greatly increased.

本願発明者らは、このような問題に鑑み、ベントナイト系材料の吹付け施工において、ベントナイト系材料を加水したり副材料を添加したり冷却したりする必要がなく、別途調整済みの粘性を有するベントナイト系材料をほぐしながらそのまま吹き付ける湿式の吹付け形式が材料品質（含水比）及び材料コストの維持の点で有利であり、また、汎用性の高い圧力釜式の吹付け装置を使用することが施工コストを低く抑えることができる点で好ましく、これらの点に着目して、一般的に用いられる従来の湿式の機械設備を一部改良して対応することにした。
そこで、本発明は、この種の従来の湿式のベントナイト系材料の吹付け装置において、釜の内壁や羽根に材料を付着しにくくし、施工性の向上を図ること、を目的とする。 In view of such a problem, the inventors of the present invention do not need to add bentonite material, add a secondary material, or cool it in spraying the bentonite material, and have a separately adjusted viscosity. The wet spraying method, in which bentonite-based material is sprayed as it is, is advantageous in terms of maintaining material quality (water content ratio) and material cost, and the use of a highly versatile pressure cooker spraying device It is preferable in that the construction cost can be kept low. Focusing on these points, the conventional wet mechanical equipment that is generally used has been partially improved to cope with it.
Therefore, an object of the present invention is to improve the workability by making it difficult for the material to adhere to the inner wall and blades of the shuttle in this type of conventional wet bentonite material spraying apparatus.

上記目的を達成するために、本発明は、上部に仕切り弁により開閉される材料入口、下部に仕切り弁により開閉される材料出口を有する釜からなり、内部を加圧、減圧する手段、回転軸と複数の羽根とからなる回転羽根機構を有し、材料を収容する上釜、及び上部に前記上釜の材料出口と連通される材料入口、下部に材料出口を有する釜からなり、内部を加圧、減圧する手段、回転軸と複数の羽根とからなる回転羽根機構を有し、材料を収容し、圧送する下釜とを具備する吹付機と、前記吹付機の前記内部を加圧する各手段に連結され、エアを供給するコンプレッサと、前記下釜の材料出口にホースを介して接続され、材料を吹き出すノズルとを備え、前記回転羽根機構は、前記複数の羽根がそれぞれ、全体として略弓形で、外側の湾曲縁と内側の湾曲縁との間に所定の幅を有し、前記回転軸に取り付けられる基端部から略中間部までの基端側の両面を略直線状に延びる平面状に、略中間部から先端部までの先端側の両面を当該略中間部から先端部にかけて漸次前記先端側の一方の面側で湾曲するように曲面状に形成され、これらの羽根が、材料の前記出口への送り用と、前記出口を通過した材料の押し戻し用とに分けられて、前記送り用の複数の羽根が、先端側を前記吹付機の出口側に向けられて、前記出口の片側一方で前記回転軸の周面に、順次、前記各羽根の前記基端側の一方の面から直角方向への前記先端側の突き出し距離に相当する寸法又はこれよりも小さい寸法の間隔で、所定の角度位相を変えて取り付けられ、前記押し戻し用の複数の羽根が、先端部を前記吹付機の出口側に向けられて、前記出口の片側他方で前記回転軸の周面に、順次、前記各羽根の前記基端側の一方の面から直角方向への前記先端側の突き出し距離に相当する寸法又はこれよりも小さい寸法の間隔で、所定の角度位相を変えて取り付けられ、調整済みの粘性を有するベントナイト系材料を前記上釜内及び前記下釜内で前記回転羽根機構によりほぐして前記下釜の材料出口へ送り、前記ホースを通じて圧送し、前記ノズルより吹付ける、ことを要旨とする。
また、この吹付け装置は、各部が次のように構成されることが好ましい。
（１）下釜の釜は、水平方向に長い筒形の圧力釜からなり、上部に材料入口が、下部に材料出口が、相互に、同一鉛直線上にない水平方向に離れた位置に設けられる。
（２）上釜の釜は、下釜と同じ又は異なる構造の圧力釜からなる。
（３）送り用の複数の羽根又は押し戻し用の複数の羽根のうち、同じ取付角度で取り付けられる羽根同士の間に、材料の付着性に応じて定められた一定の間隔が確保される。
（４）回転軸の材料出口付近の所定の位置に羽根が取り付けられない区間が設けられて、前記材料出口上に材料の付着性に応じて定められた所定の空間が確保される。
（５）押し戻し用の複数の羽根のうち、材料出口に近接する羽根につき先端側が前記材料出口上を通過可能に配置される。
（６）送り用の複数の羽根の中に、必要に応じて、羽根が先端側を材料出口側とは反対方向に向けて取り付けられ、先端側が反転された羽根が混在される。
（７）各羽根の基端部にねじ挿通部を有し、回転軸の周面にねじ挿通部を有する取付部材が固着され、前記各羽根は前記回転軸に前記取付部材を介してボルト及びナットにより締結され、前記回転軸の周面に任意の取付角度に調整可能に又は前記回転軸に取り付ける羽根の数若しくは羽根の間隔を変更可能に取り付けられる。
（８）上記（７）において、各取付部材又は各羽根のねじ挿通部は前記各取付部材又は前記各羽根の長さ方向に長い長穴状に形成され、前記各羽根は回転軸の取付部材に外周方向に向けて伸縮可能に取り付けられる。
（９）上記（７）又は（８）において、各羽根の基端部が嵌合可能なストッパーが前記各羽根の周面又は取付部材に固着され、前記ストッパーにより前記各羽根の回転方向の動きを規制する。 In order to achieve the above object, the present invention comprises a hook having a material inlet opened and closed by a gate valve at an upper portion and a material outlet opened and closed by a gate valve at a lower portion, a means for pressurizing and depressurizing the inside, a rotating shaft And a plurality of blades, which are composed of an upper hook that accommodates material, a material inlet that communicates with the material outlet of the upper hook at the upper part, and a pot that has a material outlet at the lower part. Pressure, pressure reducing means, a rotating blade mechanism comprising a rotating shaft and a plurality of blades, a spraying machine comprising a lower pot for containing and pumping material, and each means for pressurizing the interior of the spraying machine A compressor connected to supply air and connected to a material outlet of the lower hook via a hose, and a nozzle that blows out the material, and the rotating blade mechanism has a plurality of blades each having a generally arcuate shape as a whole, With the outer curved edge A flat surface extending substantially linearly from both the proximal end side to the substantially intermediate portion attached to the rotating shaft, and extending from the substantially intermediate portion to the distal end. The both sides of the tip side to the part are formed in a curved shape so as to be gradually curved on one side of the tip side from the substantially intermediate part to the tip part, and these blades are used for feeding the material to the outlet. The blades for feeding are divided into those for pushing back the material that has passed through the outlet, and the plurality of blades for feeding are directed to the outlet side of the spraying machine, and on one side of the outlet, the periphery of the rotating shaft Attached to the surface sequentially with a predetermined angle phase at intervals corresponding to or smaller than the protrusion distance of the tip side in the direction perpendicular to the one surface on the base end side of each blade. A plurality of blades for pushing back the tip of the sprayer The dimension corresponding to the protruding distance on the distal end side in the direction perpendicular to the peripheral surface of the rotating shaft on one side of the outlet and the peripheral surface of the rotating shaft sequentially from the one surface on the proximal end side of the blades. Alternatively, a bentonite-based material having an adjusted viscosity with an interval of a smaller dimension and having an adjusted viscosity is loosened by the rotary blade mechanism in the upper and lower pots, and the material of the lower pot The gist is to send to the outlet, press through the hose, and spray from the nozzle.
Moreover, it is preferable that each part is comprised as follows in this spraying apparatus.
(1) The lower hook is formed of a cylindrical pressure pot that is long in the horizontal direction, and the material inlet is provided in the upper part and the material outlet is provided in the lower part, and they are provided at positions separated from each other in the horizontal direction that are not on the same vertical line.
(2) The upper hook is a pressure hook having the same or different structure from the lower hook.
(3) Among the plurality of blades for feeding or the plurality of blades for pushing back, a certain interval determined according to the adhesion of the material is secured between the blades attached at the same mounting angle.
(4) A section where a blade is not attached is provided at a predetermined position in the vicinity of the material outlet of the rotating shaft, and a predetermined space determined according to the adhesion of the material is secured on the material outlet.
(5) Of the plurality of blades for pushing back, the tip side of the blade close to the material outlet is disposed so as to be able to pass over the material outlet.
(6) In the plurality of blades for feeding, if necessary, the blades are attached such that the tip side is directed in the direction opposite to the material outlet side, and the tip side is inverted.
(7) A mounting member having a screw insertion portion at the base end portion of each blade, and a screw insertion portion being fixed to the peripheral surface of the rotating shaft, and each blade is connected to the rotating shaft with a bolt and the mounting member. It is fastened by a nut, and is attached to the peripheral surface of the rotating shaft so as to be adjustable to an arbitrary mounting angle or to be able to change the number of blades attached to the rotating shaft or the interval between the blades.
(8) In the above (7), the screw insertion portion of each mounting member or each blade is formed in a long hole shape in the length direction of each mounting member or each blade, and each blade is a mounting member of a rotating shaft. It is attached to the outer periphery so that it can extend and contract.
(9) In the above (7) or (8), a stopper to which the base end portion of each blade can be fitted is fixed to the peripheral surface or mounting member of each blade, and the movement of each blade in the rotational direction is caused by the stopper. To regulate.

本発明の吹付け装置によれば、上釜、下釜の回転羽根機構は、複数の羽根が上記のとおりの所定の形状に形成され、回転軸に上記のとおりの所定の配列に取り付けられるので、上釜、下釜の各釜内で、回転軸に対して直角に延びる各羽根の基端側の両面で別途調整済みの粘性を有するベントナイト系材料に切り込みを入れて十分にほぐし、各羽根の材料出口に向けて湾曲する先端側で当該材料を上釜、下釜の内壁全面から掻き取りながら材料出口方向に向けて確実に送り出すことができ、したがって、調整済みの粘性を有する材料を上釜や下釜の内壁や羽根に付着しにくくして、材料のほぐし性能や掻き取り能力を良好に維持し、十分にほぐされた調整済みの粘性を有する材料を直接、ホースを通じて圧送し、ノズルから吹付けることができ、従来に比べて材料吹付けの施工性を大幅に向上させることができる、という効果を奏する。 According to the spraying device of the present invention, the rotary blade mechanism of the upper hook and the lower hook has a plurality of blades formed in the predetermined shape as described above, and is attached to the rotary shaft in the predetermined arrangement as described above. In each of the hooks of the upper and lower hooks, the bentonite material having a viscosity adjusted separately on both sides of the base end side of each blade extending at right angles to the rotation axis is cut and loosened sufficiently, and the material of each blade It is possible to reliably feed the material toward the material outlet while scraping it from the entire inner wall of the upper and lower pots at the tip side that curves toward the outlet, and therefore, the adjusted viscosity material can be sent to the upper and lower pots. It is difficult to adhere to the inner wall and blades of the material, maintaining the material's ability to loosen and scrape well, and the material that has been sufficiently loosened and adjusted viscosity is directly pumped through the hose and sprayed from the nozzle Can It can greatly improve the workability of the material spraying as compared with the conventional, an effect that.

本発明の一実施の形態におけるベントナイト系材料の吹付け装置を示す図（（ａ）は一部断面正面図（ｂ）は一部断面側面図）The figure which shows the spray apparatus of the bentonite-type material in one embodiment of this invention ((a) is a partial cross section front view (b) is a partial cross section side view) 同吹付け装置の特に回転軸と羽根の取付構造を示す図The figure which shows the attachment structure of a rotating shaft and a blade especially of the spraying device 同吹付け装置の特に下釜を示す図（（ａ）は側面断面図（ｂ）は正面断面図）The figure which shows especially a lower hook of the spraying apparatus ((a) is side sectional drawing (b) is front sectional drawing)

次に、この発明を実施するための形態について図を用いて説明する。
図１にベントナイト系材料の吹付け装置を示している。
図１に示すように、この吹付け装置Ｍは、材料を撹拌する上釜１、及び材料を撹拌し、圧送する下釜３とを具備する吹付機Ｍ１と、吹付機Ｍ１に連結され、エアを供給するコンプレッサ（図示省略）と、下釜３の材料出口３２にホース（図示省略）を介して接続され、材料を吹き出すノズル（図示省略）とを備えて構成される。
この装置Ｍでは、特に、吹付機Ｍ１の上釜１内に設置される回転羽根機構２を構成する回転軸２１及び複数の羽根２２の構造、及び下釜３内に設置される回転羽根機構４を構成する回転軸４１及び複数の羽根４２の構造が本発明に特有のもので、上釜１本体、下釜３本体、コンプレッサ、ホース、ノズルなど、この種の吹付け装置として必要な各部に、通常使用されるものが採用されており、全体として、一般的な湿式の圧力釜式の吹付け装置になっている。
以下の説明では、本発明固有の吹付機Ｍ１について詳しく説明し、コンプレッサ、ホース、ノズルなど吹付機以外の設備については周知なので、詳しい説明を省略する。 Next, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 shows an apparatus for spraying bentonite materials.
As shown in FIG. 1, this spraying device M is connected to a sprayer M1 having an upper hook 1 for stirring materials and a lower pot 3 for stirring and pressure-feeding materials, and the sprayer M1, A compressor (not shown) to be supplied and a nozzle (not shown) that blows out the material are connected to the material outlet 32 of the lower hook 3 via a hose (not shown).
In this apparatus M, in particular, the structure of the rotary shaft 21 and the plurality of blades 22 constituting the rotary blade mechanism 2 installed in the upper shuttle 1 of the sprayer M1 and the rotary blade mechanism 4 installed in the lower shuttle 3 are provided. The structure of the rotating shaft 41 and the plurality of blades 42 constituting the structure is unique to the present invention. Normally, each part necessary for this type of spraying device, such as the upper hook 1 main body, the lower hook 3 main body, the compressor, the hose, and the nozzle, What is used is adopted, and the whole is a general wet pressure cooker type spraying device.
In the following description, the sprayer M1 unique to the present invention will be described in detail, and facilities other than the sprayer such as a compressor, a hose, and a nozzle are well known, and thus detailed description thereof will be omitted.

吹付機Ｍ１は上釜１及び下釜３が駆動部５とともに台車６上に組み立てられて構成される。
上釜１は、上部に仕切り弁により開閉される材料入口１１、下部に仕切り弁により開閉される材料出口１２を有する釜形の圧力釜１０からなり、この圧力釜１０の外部に、釜内部を加圧する手段として加圧パイプ、減圧する手段として減圧パイプがそれぞれ配管され、この圧力釜１０の内部に、回転羽根機構２が設置される。この上釜１上部の材料入口１１に、材料投入用のホッパー１３が設けられる。
下釜３は、上部の一端側に上釜１の材料出口１２に連通される材料入口３１、下部の他端側に材料出口３２を有する水平方向に長い円筒形の圧力釜３０からなり、この圧力釜３０の外部に、釜内部を加圧する手段として加圧パイプ、減圧する手段として減圧パイプがそれぞれ配管され、この圧力釜３０の内部に、回転羽根機構４が設置される。 The sprayer M1 is configured by assembling an upper hook 1 and a lower hook 3 together with a drive unit 5 on a carriage 6.
The upper hook 1 is composed of a hook-shaped pressure cooker 10 having a material inlet 11 opened and closed by a gate valve at the upper part and a material outlet 12 opened and closed by a gate valve at the lower part. A pressure pipe is provided as a means for pressurization, and a pressure reduction pipe is provided as a means for pressure reduction, and the rotary blade mechanism 2 is installed inside the pressure cooker 10. A material inlet hopper 13 is provided at the material inlet 11 at the top of the upper hook 1.
The lower hook 3 is composed of a horizontally long cylindrical pressure cooker 30 having a material inlet 31 communicating with the material outlet 12 of the upper hook 1 at one upper end and a material outlet 32 at the other lower end. A pressure pipe as a means for pressurizing the inside of the pot and a pressure reducing pipe as a means for depressurizing are respectively provided outside the pot 30, and the rotary blade mechanism 4 is installed inside the pressure pot 30.

上釜１，下釜３の回転羽根機構２，４はそれぞれ、回転軸２１，４１と、複数の羽根２２，４２とからなり、駆動部５により回転駆動されるようになっている。
これら回転羽根機構２，４に使用される複数の羽根２２，４２は共通で、図２に示すように、それぞれ、全体として略弓形で、外側の湾曲縁２２１，４２１と内側の湾曲縁２２２，４２２との間に、回転軸２１，４１に取り付けられる基端部２２３，４２３から先端部２２６，４２６に向けて漸次拡大される所定寸法の幅を有し、基端部２２３，４２３から略中間部２２５，４２５までの基端側２２４，４２４の両面を略直線状に延びる平面状に、略中間部２２５，４２５から先端部２２６，４２６までの先端側２２７，４２７の両面を略中間部２２５，４２５から先端部２２６，４２６にかけて漸次先端側２２７，４２７の一方の面側で（圧力釜１０，３０内の回転軸２１，４１に取付時、先端部２２６，４２６が圧力釜１０，３０の材料出口１２，３２側に向けて）湾曲するように曲面状に形成される。
これらの羽根２２，４２は基端部２２３，４２３近傍にねじ挿通部（ねじ穴）２２０，４２０を有し、回転軸２１，４１の周面にねじ挿通部２１０，４１０を有する取付部材としてステー２１１，４１１が固着されて、各羽根２２，４２が回転軸２１，４１にステー２１１，４１１を介してボルト及びナットにより締結され、回転軸２１，４１の周面に任意の取付角度に調整可能に、また、回転軸２１，４１に取り付ける羽根２２，４２の数若しくは羽根２２，４２の間隔が変更可能に取り付けられる。
この場合、各ステー２１１，４１１のねじ挿通部２１０，４１０又は各羽根２２，４２のねじ挿通部２２０，４２０は各ステー２１１，４１１又は各羽根２２，４２の長さ方向に長い長穴状に形成され、各羽根２２，４２は回転軸２１，４１のステー２１１，４１１に外周方向に向けて伸縮可能に取り付けられる。なお、ここでは、各ステー２１１，４１１のねじ挿通部２１０，４１０が各ステー２１１，４１１の長さ方向に長い長穴状に形成されて、各羽根２２，４２が回転軸２１，４１のステー２１１，４１１に外周方向に向けて伸縮可能に取り付けられる。
また、この場合、各回転軸２１，４１の周面又はステー２１１，４１１に各羽根２２，４２の基端部２２３，４２３が嵌合可能な鋼材からなるストッパー２１２，４１２が固着され、このストッパー２１２，４１２により各羽根２２，４２の回転方向の動きを規制する。ここでは、ストッパー２１２，４１２はＬ形鋼からなり、羽根２２，４２の基端縁部２２３，４２３からその片側一方の側縁部にかけて係合可能な断面Ｌ形に形成される。このストッパー２１２，４１２は、羽根２２，４２の回転軸２１，４１に対する取付角度の調整を行った後、回転軸２１，４１又はステー２１１，４１１に当該取付角度に溶接により固着される。 The rotary blade mechanisms 2 and 4 of the upper hook 1 and the lower hook 3 are respectively composed of rotary shafts 21 and 41 and a plurality of blades 22 and 42, and are driven to rotate by the drive unit 5.
The plurality of blades 22 and 42 used in the rotary blade mechanisms 2 and 4 are common, and as shown in FIG. 2, each of them has a generally arcuate shape as a whole, and has outer curved edges 221 and 421 and inner curved edges 222 and 422 has a width of a predetermined dimension that gradually increases from the base end portions 223 and 423 attached to the rotary shafts 21 and 41 toward the front end portions 226 and 426, and is substantially intermediate from the base end portions 223 and 423. Both surfaces of the base end sides 224 and 424 up to the portions 225 and 425 are formed in a planar shape extending substantially linearly, and both surfaces of the tip ends 227 and 427 from the substantially intermediate portions 225 and 425 to the tip portions 226 and 426 are set in the substantially intermediate portion 225. , 425 to the tip portions 226 and 426 gradually on one surface side of the tip sides 227 and 427 (when the tip portions 226 and 426 are attached to the rotary shafts 21 and 41 in the pressure cookers 10 and 30, material Toward the mouth 12, 32 side) is formed in a curved shape so as to curve.
These blades 22, 42 have screw insertion portions (screw holes) 220, 420 in the vicinity of the base end portions 223, 423, and stays as mounting members having screw insertion portions 210, 410 on the peripheral surfaces of the rotary shafts 21, 41. 211 and 411 are fixed, and the blades 22 and 42 are fastened to the rotary shafts 21 and 41 by bolts and nuts via the stays 211 and 411, and can be adjusted to an arbitrary mounting angle on the peripheral surfaces of the rotary shafts 21 and 41. In addition, the number of blades 22 and 42 attached to the rotary shafts 21 and 41 or the interval between the blades 22 and 42 is attached to be changeable.
In this case, the screw insertion portions 210 and 410 of the stays 211 and 411 or the screw insertion portions 220 and 420 of the blades 22 and 42 are in the form of elongated holes that are long in the length direction of the stays 211 and 411 or the blades 22 and 42. The blades 22 and 42 are formed and attached to the stays 211 and 411 of the rotary shafts 21 and 41 so as to extend and contract in the outer peripheral direction. Here, the screw insertion portions 210 and 410 of the stays 211 and 411 are formed in a long hole shape in the length direction of the stays 211 and 411, and the blades 22 and 42 are stays of the rotating shafts 21 and 41. It is attached to 211,411 so that expansion-contraction is possible toward an outer peripheral direction.
Further, in this case, stoppers 212 and 412 made of steel materials capable of fitting the base end portions 223 and 423 of the blades 22 and 42 are fixed to the peripheral surfaces of the rotary shafts 21 and 41 or the stays 211 and 411, respectively. The movements in the rotational direction of the blades 22 and 42 are restricted by 212 and 412. Here, the stoppers 212 and 412 are made of L-shaped steel and are formed in an L-shaped cross section that can be engaged from the base end edge portions 223 and 423 of the blades 22 and 42 to one side edge portion on one side thereof. The stoppers 212 and 412 are fixed to the rotary shafts 21 and 41 or the stays 211 and 411 by welding after adjusting the mounting angles of the blades 22 and 42 with respect to the rotary shafts 21 and 41.

上釜１の回転羽根機構２にあっては、図１及び図２に示すように、複数の羽根２２が、基本的に、先端側２２７を材料出口１２の直上に向けて、回転軸２１の周面に、順次所定の間隔で取り付けられ、選択的に、回転軸２１の適宜の位置に羽根２２が先端側２２７を材料出口１２とは反対方向に向けて取り付けられ、先端側２２７が反転された羽根２２が混在される。
この場合、複数の羽根２２は、上釜１の上下の材料入口１１及び材料出口１２の間で、回転軸２１の軸方向中央を境に両側に分けられ、各側で各羽根２２の先端側２２７を材料出口１２の直上に向けて、回転軸２１の周面に回転軸２１の回転方向と平行に配設される。すなわち、回転軸２１の片側一方では、略半数の羽根２２が、先端側２２７を材料出口１２側に向けられて、回転軸２１の軸方向中央付近から片側一方に向けて、順次、回転軸２１と直角に、各羽根２２の基端側２２４の一方の面から直角方向（言い換えれば、回転軸２１の軸方向。以下、同じ。）への先端側２２７の突き出し距離に相当する寸法又はこれよりも小さい寸法の間隔で、所定の角度（例えば９０度）位相を変えて取り付けられ、回転軸２１の片側他方では、略半数の羽根２２が、先端側２２７を材料出口１２側に向けられて、回転軸２１の軸方向中央付近から片側他方に向けて、順次、回転軸２１と直角に、各羽根２２の基端側２２４の一方の面から直角方向への先端側２２７の突き出し距離に相当する寸法又はこれよりも小さい寸法の間隔で、所定の角度（例えば９０度）位相を変えて取り付けられる。なお、この吹付機Ｍ１の場合、上釜１に先端側２２７が反転された羽根２２は混在されていない。
また、これらの羽根２２は回転軸２１に回転軸２１の周面に固着されたステー２１１にボルト及びナットにより取り付けられる。
この場合、上釜１の大きさ及び形状に応じて、各羽根２２の先端側２２７が上釜１の内壁に近接して回転するように、各羽根２２の回転軸２１の各ステー２１１からの突出長さ及び各ステー２１１上での取付角度を決めて、各羽根２２の基端部２２３近傍のねじ挿通部２２０をステー２１１のねじ挿通部（長穴）２１０の適宜の位置に合わせ、各羽根２２を所定の取付角度に向けた状態で、各ねじ挿通部２２０，２１０にボルトを通しナットに締結することにより、各羽根２２を各ステー２１１に取り付ける。そして、この状態の各羽根２２の基端部２２３にストッパー２１２を係合させ、この状態でストッパー２１２を回転軸２１又はステー２１１に溶接により固着することにより、各羽根２２を回り止めする（すなわち、各羽根２２のボルトを回転中心とする回転方向の動きを規制する）。このようにして上釜１内部で各羽根２２により材料を上釜１の内壁に沿って掻き取りながらほぐすことができるようにする。なお、この上釜１では、例えば、材料の質（付着性）や量など必要に応じて、回転軸２１から羽根２２を取り外したり追加的に取り付けたりして、羽根２２の数、羽根２２の間隔が増減され、材料のほぐし状態が調整される。例えば、材料の付着性が特に高い場合、羽根２２の数を減らし、羽根２２の間隔を増やすことで対応することができる。但し、この場合は、羽根２２の数を減らした分だけ材料を送る能力が低減するため、その分だけ施工能力は低下せざるを得ない。 In the rotary blade mechanism 2 of the upper hook 1, as shown in FIGS. 1 and 2, the plurality of blades 22 basically have the distal end 227 directly above the material outlet 12 and the rotary shaft 21. The blades 22 are sequentially attached to the peripheral surface at predetermined intervals, and selectively, the blades 22 are attached to appropriate positions of the rotary shaft 21 with the tip side 227 facing away from the material outlet 12, and the tip side 227 is inverted. The blades 22 are mixed.
In this case, the plurality of blades 22 are divided on both sides between the upper and lower material inlets 11 and the material outlets 12 of the upper hook 1 with the center in the axial direction of the rotating shaft 21 as a boundary. 227 is disposed on the peripheral surface of the rotating shaft 21 in parallel with the rotating direction of the rotating shaft 21 with the material outlet 12 facing directly above. That is, on one side of the rotating shaft 21, approximately half of the blades 22 are arranged so that the tip end 227 is directed toward the material outlet 12, and the rotating shaft 21 is sequentially moved from the vicinity of the axial center of the rotating shaft 21 toward one side. And a dimension corresponding to the protruding distance of the distal end side 227 from one surface of the base end side 224 of each blade 22 to the direction perpendicular to the right angle (in other words, the axial direction of the rotating shaft 21, hereinafter the same), or from this Are attached with a small angle interval and changing the phase by a predetermined angle (for example, 90 degrees). On one side of the rotating shaft 21, approximately half of the blades 22 are directed with the tip side 227 toward the material outlet 12 side, From the vicinity of the center in the axial direction of the rotating shaft 21 toward the other side of the rotating shaft 21, it corresponds to the protruding distance of the distal end side 227 in the direction perpendicular to the one surface of the base end side 224 of each blade 22 in order at right angles to the rotating shaft 21. Dimensions or smaller At intervals of have dimensions, it is mounted by changing the predetermined angle (e.g. 90 degrees) phase. In the case of this sprayer M1, the blades 22 whose tip side 227 is inverted are not mixed in the upper hook 1.
The blades 22 are attached to a stay 211 fixed to the rotary shaft 21 on the peripheral surface of the rotary shaft 21 with bolts and nuts.
In this case, depending on the size and shape of the upper hook 1, the tip side 227 of each blade 22 rotates close to the inner wall of the upper hook 1 from each stay 211 of the rotating shaft 21 of each blade 22. The protrusion length and the mounting angle on each stay 211 are determined, and the screw insertion portion 220 in the vicinity of the base end portion 223 of each blade 22 is aligned with an appropriate position of the screw insertion portion (elongate hole) 210 of the stay 211. Each blade 22 is attached to each stay 211 by passing bolts through the screw insertion portions 220 and 210 and fastening them to nuts in a state where the blade 22 is directed to a predetermined attachment angle. Then, the stopper 212 is engaged with the base end portion 223 of each blade 22 in this state, and in this state, the stopper 212 is fixed to the rotating shaft 21 or the stay 211 by welding, thereby preventing each blade 22 from rotating (that is, The movement of the rotating direction around the bolt of each blade 22 is regulated). In this manner, the material can be loosened while scraping along the inner wall of the upper hook 1 by the blades 22 inside the upper hook 1. In the upper hook 1, for example, the number of blades 22 and the number of blades 22 can be reduced by removing or additionally attaching the blades 22 from the rotating shaft 21 as necessary, such as the quality (adhesiveness) and quantity of the material. The interval is increased or decreased, and the material loosening state is adjusted. For example, when the adhesion of the material is particularly high, it can be dealt with by reducing the number of blades 22 and increasing the interval between the blades 22. However, in this case, since the ability to send the material is reduced by the number of blades 22 reduced, the construction ability must be reduced by that amount.

下釜３においては、複数の羽根４２は、図２及び図３に示すように、材料出口３２への送り用と、材料出口３２を通過した材料の押し戻し用とに分けられて、送り用の複数の羽根４２が、先端側４２７を材料出口３２に向けられて、材料出口３２の片側一方で回転軸４１の周面に回転軸４１の回転方向と平行に配設され、押し戻し用の複数の羽根４２が、先端部４２７を材料出口３２に向けられて、材料出口３２の片側他方で回転軸４１の周面に回転軸４１の回転方向と平行に配設される。
ここで、送り用の複数（この場合、３枚１組が複数組）の羽根４２は、材料出口３２に近接する羽根４２につき先端側４２７が材料出口３２上を通過しない位置に規制して配置されて回転軸４１と直角に取り付けられ、この羽根４２の次の羽根４２から、順次、回転軸４１と直角に、各羽根４２の基端側４２４の一方の面から直角方向（言い換えれば、回転軸４１の軸方向。以下、同じ。）への先端側４２７の突き出し距離に相当する寸法又はこれよりも小さい寸法の間隔で、所定の角度（例えば１２０度）位相を変えて、かつ同じ角度の羽根４２同士間は材料の付着を防止するのに必要な予め定められた一定の間隔（例えば６０ｍｍ以上）を取って取り付けられる。
ここで、押し戻し用の複数（この場合、３枚１組が１組）の羽根４２は、材料出口３２に近接する羽根４２につき先端側４２７が材料出口３２上を通過可能に配置されて回転軸４１と直角に取り付けられ、この羽根４２の次の羽根４２から、順次、回転軸４１と直角に、各羽根４２の基端側４２４の一方の面から直角方向への先端側４２７の突き出し距離に相当する寸法又はこれよりも小さい寸法の間隔で、所定の角度（例えば１２０度）位相を変えて取り付けられる。
また、これらの羽根４２は回転軸４１に回転軸４１の周面に固着されたステー４１１にボルト及びナットにより取り付けられる。
この場合、下釜３の大きさ及び形状に応じて、各羽根４２の先端側４２７が下釜３の内壁に近接して回転するように、各羽根４２の回転軸４１の各ステー４１１からの突出長さ及び各ステー４１１上での取付角度を決めて、各羽根４２の基端部４２３近傍のねじ挿通部４２０をステー４１１のねじ挿通部（長穴）４１０の適宜の位置に合わせ、各羽根４２を所定の取付角度に向けた状態で、各ねじ挿通部４２０，４１０にボルトを通しナットに締結することにより、各羽根４２を各ステー４１１に取り付ける。そして、この状態の各羽根４２の基端部４２３にストッパー４１２を係合させ、この状態でストッパー４１２を回転軸４１又はステー４１１に溶接により固着することにより、各羽根４２を回り止めする（すなわち、各羽根４２のボルトを回転中心とする回転方向の動きを規制する）。このようにして下釜３内部で各羽根４２が材料出口３２の片側一方では材料を下釜３の内壁に沿って材料を掻き取りながらほぐしつつ材料出口３２に向けて送り出し、材料出口３２の片側他方では材料出口３２を通過する材料を材料出口３２側へ押し戻すようにする。
このように下釜３の回転軸４１の材料出口３２付近の所定の位置に羽根４２が取り付けられない区間が設けられて、材料出口３２上に材料の付着性に応じて定められた所定の空間が確保される In the lower hook 3, as shown in FIGS. 2 and 3, the plurality of blades 42 are divided into those for feeding to the material outlet 32 and those for pushing back the material that has passed through the material outlet 32. The blades 42 are arranged with the front end side 427 directed to the material outlet 32, arranged on one side of the material outlet 32 on the peripheral surface of the rotating shaft 41 in parallel with the rotation direction of the rotating shaft 41, and a plurality of pushback blades 42 is disposed on the peripheral surface of the rotary shaft 41 on the other side of the material outlet 32 in parallel with the rotational direction of the rotary shaft 41 with the tip end portion 427 facing the material outlet 32.
Here, a plurality of blades 42 for feeding (in this case, one set of three sheets is a plurality of sets) are arranged so that the tip side 427 does not pass over the material outlet 32 with respect to the blade 42 adjacent to the material outlet 32. Are attached at right angles to the rotation shaft 41, and sequentially from the one blade 42 on the base end side 424 of each blade 42 in a direction perpendicular to the rotation shaft 41 from the blade 42 next to the blade 42 (in other words, rotating The phase is changed by a predetermined angle (for example, 120 degrees) at an interval corresponding to the projection distance of the tip side 427 to the axial direction of the shaft 41. The blades 42 are attached to each other with a predetermined fixed interval (for example, 60 mm or more) necessary for preventing adhesion of the material.
Here, a plurality of blades 42 for pushing back (in this case, one set of three sheets) are arranged such that the tip side 427 can pass over the material outlet 32 with respect to the blade 42 adjacent to the material outlet 32, and the rotation axis 41 is attached at right angles to the blades 42, and the blades 42 next to the blades 42 are sequentially perpendicular to the rotary shaft 41, and protrude from the one side of the base end side 424 of each blade 42 to the distal end side 427 in the perpendicular direction. It is attached by changing the phase by a predetermined angle (for example, 120 degrees) at an interval of a corresponding dimension or a smaller dimension.
The blades 42 are attached to a stay 411 fixed to the rotary shaft 41 on the peripheral surface of the rotary shaft 41 with bolts and nuts.
In this case, depending on the size and shape of the lower hook 3, the length of protrusion of each blade 42 from the stay 411 of the rotating shaft 41 so that the tip side 427 of each blade 42 rotates close to the inner wall of the lower hook 3. Then, the mounting angle on each stay 411 is determined, the screw insertion portion 420 in the vicinity of the base end portion 423 of each blade 42 is aligned with the appropriate position of the screw insertion portion (long hole) 410 of the stay 411, and each blade 42 Each blade 42 is attached to each stay 411 by passing bolts through the screw insertion portions 420 and 410 and fastening them to the nuts in a state where is directed to a predetermined attachment angle. Then, the stopper 412 is engaged with the base end portion 423 of each blade 42 in this state, and in this state, the stopper 412 is fixed to the rotating shaft 41 or the stay 411 by welding, thereby preventing each blade 42 from rotating (that is, The movement in the rotational direction around the bolt of each blade 42 is regulated). In this way, each blade 42 in the lower pot 3 feeds the material toward the material outlet 32 while loosening the material along the inner wall of the lower pot 3 on one side of the material outlet 32, and on the other side of the material outlet 32. The material passing through the material outlet 32 is pushed back to the material outlet 32 side.
As described above, a section where the blade 42 is not attached is provided at a predetermined position near the material outlet 32 of the rotating shaft 41 of the lower hook 3, and a predetermined space determined according to the adhesion of the material is formed on the material outlet 32. Secured

この吹付け装置Ｍはかかる構成を備え、調整済みの粘性を有するベントナイト系材料を上釜１、下釜３でほぐして、ホースに圧送し、ノズルより吹付けるようになっている。具体的な動作は次のとおりである。
図１において、まず、上釜１下部の仕切り弁を閉じて材料出口１２を閉状態にし、コンプレッサを駆動して、コンプレッサからレシーバタンクを介して圧縮空気を下釜３の加圧パイプに供給し、下釜３内部を加圧する。この状態から、上釜１上部の仕切り弁を開いて、調整済みの粘性を有するベントナイト系材料を、ホッパー１３を通じて、上釜１上部の材料入口１１から上釜１内部に投入する。そして、この上釜１内の回転羽根機構２を駆動して、ベントナイト系材料を撹拌する。この場合、上釜１の上下の材料入口１１及び材料出口１２の間で、複数の羽根２２が、回転軸２１の軸方向中央を境に両側に分けられ、各側で各羽根２２の先端側２２７を材料出口１２側に向けて、回転軸２１の周面に配列されているので、各羽根２２の回転駆動により、各羽根２２の基端側２２４の各面が材料に切り込みを入れて細かくほぐし、各羽根２２の先端側２２７の曲面で材料を材料出口１２の周囲から材料出口１２に向けて送る動作を繰り返す。また、この場合、各羽根２２の長さ及び角度を上釜１の内壁に合わせて調整してあるので、上釜１内部で各羽根２２が材料を上釜１の内壁に沿って掻き取りながら撹拌し、上釜１の内壁への材料の付着が低減される。なお、必要により、回転軸２１の適宜の位置に、先端側２２７を反転された羽根２２が混在された場合、この羽根２２で、材料が材料出口１２とは反対方向に押し戻されて、材料出口１２側に集中しすぎることがなく、特に、材料が締め固まりやすい場合に効果がある。
釜の容量に適切な量の材料を投入し終えたら、直ちに、上釜１上部の仕切り弁を閉じて材料入口１１を閉状態にし、コンプレッサからレシーバタンクを介して圧縮空気を上釜１の加圧パイプに供給し、上釜１内部を加圧する。上釜１内で材料をほぐしつつ、上下の釜内の圧力が均等になるのを待つ。上釜１内部の圧力が下釜３内部の圧力と略等しくなったところで、上釜１下部の仕切り弁を開いて、上釜１内の材料を下釜２の材料入口３１を通じて、下釜３内部に落下させる。材料が下釜３に落下したら、上釜１への加圧を停止し、上釜１下部の仕切り弁を閉じ、上釜１内部の空気を減圧パイプから外部に抜いて、上釜１内部の圧力を大気圧に戻す。そして、上釜１上部の仕切り弁を開き、材料入口１１を開状態にして、材料を上釜１に投入し、同様の動作を繰り返す。一方、下釜３では、回転羽根機構４を駆動して、材料をほぐしながら、材料出口３２に向けて送り出す。すなわち、下釜３内で、回転軸４１に対して直角に延びる各羽根４２の基端側４２４の両面により材料に切り込みを入れて細かくほぐし、各羽根４２の材料出口３２に向けて湾曲する先端側４２７により材料を下釜３の内壁全体から掻き取りながら材料出口３２に向けて送り出す。この場合、各羽根４２の長さ及び角度を下釜３の内壁に合わせて調整してあるので、下釜３内部で各羽根４２が材料を下釜３の内壁に沿って掻き取りながらほぐし、下釜３の内壁に材料が付着することがない。また、この場合、同じ位相で同じ取付角度に取り付けられた羽根４２同士間に材料の付着を防止するのに必要な予め定められた一定の間隔（例えば６０ｍｍ以上）が置かれているので、羽根４２と羽根４２の間に材料が付着して詰まるのを防止される。このようにして材料は材料出口３２に向けて送られる。この下釜３では、既述のとおり、回転軸４１の材料出口３２付近の所定の位置に羽根４２が取り付けられない区間が設けられて、材料出口３２上に材料の付着性に応じて定められた所定の空間が確保され、また、材料出口３２の片側一方で材料出口３２に近接する羽根４２の先端が材料出口３２上を通過しないので、材料は材料出口３２側に送る力によって過剰に締め固められることなしに、材料出口３２に向けて投下される。またここで、材料出口３２の片側他方に配列された押し戻し用の羽根４２のうち、材料出口３２に近接する羽根４２の先端側４２７が材料出口３２上を通過するので、材料出口３２に向かって材料が集中し、材料出口３２上に、さらにはこの材料出口３２を通過して材料出口３２の片側他方まで、過剰な材料が生じ、材料出口３２を完全に塞いで詰まりが発生するような場合、これら押し戻し用の羽根４２の回転により、材料出口３２上の余分な材料を押し戻して詰まりを防ぎ、この押し戻された材料は送り側の羽根４２によって材料出口３２に向けて送り投下される。以降、このような材料の供給サイクルが繰り返される。
そして、この材料は材料出口３２に投下されると、ホースを通じてノズルへ圧送され、ノズルの先端から外部に吹き出されて、施工面に吹き付けられる。 This spraying device M has such a configuration, and is made to loosen an adjusted viscosity bentonite material with the upper and lower pots 1 and 3, and pump it to the hose and spray it from the nozzle. The specific operation is as follows.
In FIG. 1, first, the gate valve at the lower portion of the upper hook 1 is closed to close the material outlet 12, the compressor is driven, and compressed air is supplied from the compressor to the pressurized pipe of the lower hook 3 through the receiver tank. Pressurize the inside of the lower hook 3. From this state, the gate valve at the upper part of the upper hook 1 is opened, and the bentonite-based material having the adjusted viscosity is introduced into the upper hook 1 from the material inlet 11 at the upper part of the upper pot 1 through the hopper 13. And the rotary blade mechanism 2 in this upper pot 1 is driven, and a bentonite type material is stirred. In this case, between the upper and lower material inlets 11 and the material outlet 12 of the upper hook 1, the plurality of blades 22 are divided on both sides with the axial center of the rotating shaft 21 as a boundary, and the tip side of each blade 22 on each side. Since the 227 is arranged on the peripheral surface of the rotary shaft 21 with the material outlet 12 side facing, each surface on the base end side 224 of each blade 22 is cut into the material finely by the rotational drive of each blade 22. The operation of unwinding and sending the material from the periphery of the material outlet 12 toward the material outlet 12 is repeated on the curved surface on the tip side 227 of each blade 22. In this case, since the length and angle of each blade 22 are adjusted to match the inner wall of the upper hook 1, each blade 22 scrapes the material along the inner wall of the upper hook 1 inside the upper hook 1. Stirring reduces the adhesion of material to the inner wall of the upper hook 1. If necessary, if the blade 22 with the tip side 227 inverted is mixed at an appropriate position of the rotary shaft 21, the material is pushed back in the direction opposite to the material outlet 12 by the blade 22 and the material outlet It is not concentrated too much on the 12 side, and is particularly effective when the material tends to compact.
Immediately after the addition of an appropriate amount of material to the capacity of the kettle, the gate valve at the top of the upper kettle 1 is closed to close the material inlet 11, and compressed air is fed from the compressor through the receiver tank to the upper kettle 1. Supply to the pressure pipe and pressurize the inside of the upper hook 1. While loosening the material in the upper hook 1, wait for the pressure in the upper and lower hooks to become equal. When the pressure in the upper hook 1 becomes substantially equal to the pressure in the lower hook 3, the gate valve at the lower part of the upper hook 1 is opened, and the material in the upper hook 1 falls into the lower hook 3 through the material inlet 31 of the lower hook 2. Let When the material falls into the lower hook 3, pressurization to the upper hook 1 is stopped, the gate valve at the lower part of the upper hook 1 is closed, the air inside the upper hook 1 is drawn out from the decompression pipe, and the pressure inside the upper hook 1 is Return to atmospheric pressure. Then, the gate valve at the top of the upper hook 1 is opened, the material inlet 11 is opened, the material is put into the upper hook 1, and the same operation is repeated. On the other hand, in the lower hook 3, the rotary blade mechanism 4 is driven to feed the material toward the material outlet 32 while loosening the material. That is, in the lower hook 3, the material is cut and loosened by both surfaces of the base end side 424 of each blade 42 extending at right angles to the rotation shaft 41, and the tip end side curved toward the material outlet 32 of each blade 42. The material is sent out toward the material outlet 32 while scraping the material from the entire inner wall of the lower pot 3 by 427. In this case, since the length and angle of each blade 42 are adjusted to match the inner wall of the lower hook 3, each blade 42 loosens the material while scraping the material along the inner wall of the lower hook 3. Material does not adhere to the inner wall. Further, in this case, since a predetermined fixed interval (for example, 60 mm or more) necessary for preventing adhesion of material is placed between the blades 42 mounted at the same mounting angle in the same phase, the blades It is prevented that the material adheres between the blade 42 and the blade 42 and is clogged. In this way, the material is fed towards the material outlet 32. In the lower hook 3, as described above, a section where the blade 42 is not attached is provided at a predetermined position near the material outlet 32 of the rotating shaft 41, and is determined on the material outlet 32 according to the adhesion of the material. A predetermined space is secured, and the tip of the blade 42 adjacent to the material outlet 32 on one side of the material outlet 32 does not pass over the material outlet 32, so that the material is excessively compacted by the force sent to the material outlet 32 side. Without being dropped, it is dropped towards the material outlet 32. Here, among the push-back blades 42 arranged on the other side of the material outlet 32, the tip side 427 of the blade 42 adjacent to the material outlet 32 passes over the material outlet 32. When the material concentrates on the material outlet 32 and further passes through the material outlet 32 to one side of the material outlet 32, and the material outlet 32 is completely blocked, resulting in clogging. By the rotation of the blades 42 for pushing back, excess material on the material outlet 32 is pushed back to prevent clogging, and the pushed-back material is sent and dropped toward the material outlet 32 by the blade 42 on the feeding side. Thereafter, such a material supply cycle is repeated.
When this material is dropped onto the material outlet 32, it is pumped to the nozzle through the hose, blown out from the tip of the nozzle, and blown to the construction surface.

なお、回転軸４２の回転数は材料の付着性が強まるほど、低回転（１６００ｒｐｍ未満）とすることで、ノズルやホースでの詰まりが低減される。但し、コンクリート細骨材用砂５０％をベースとしてフェロニッケルスラグ（例えば、パムコクラストン）を３５％添加したベントナイト（例えば、クニゲルＶ１）１５％混合土を、締め固め試験Ａ法での最適含水比＋４％付近に調整した程度の付着性では、高回転（１６００ｒｐｍ以上）のままでも、問題なく吹付け可能である。 In addition, clogging with a nozzle or a hose is reduced by setting the rotation speed of the rotating shaft 42 to a lower rotation (less than 1600 rpm) as the adhesion of the material increases. However, 15% bentonite (for example, Kunigel V1) mixed with 35% ferronickel slag (for example, Pamco claston) based on 50% concrete fine aggregate sand is mixed with the optimal water content ratio in the compaction test A method +4 If the adhesiveness is adjusted to around%, it can be sprayed without any problem even at high rotation (1600 rpm or more).

以上説明したように、このベントナイト系材料の吹付け装置Ｍでは、上釜１，下釜３の回転羽根機構２，４は、複数の羽根２２，４２が既述のとおりの所定の形状に形成され、回転軸２１，４１に既述のとおりの所定の配列で取り付けられるので、上釜１，下釜３の各釜内で、回転軸２１，４１に対して直角に延びる各羽根２２，４２の基端側の２２４，４２４両面で別途調整済みの粘性を有するベントナイト系材料に切り込みを入れて細かく十分にほぐし、各羽根２２，４２の材料出口１２，３２に向けて湾曲する先端側２２７，４２７で当該材料を上釜１，下釜３の内壁全面から掻き取りながら材料出口１２，３２方向に向けて確実に送り出すことができる。
すなわち、この吹付け装置Ｍにおいては、従来のようにベントナイト系材料を加水したり副材料を添加したり冷却したりすることなく、別途調整済みの粘性を有するベントナイト系材料をそのまま細かくほぐしながら、ホースを通じて圧送し、ノズルから吹付けることができ、従来に比べて、材料品質（含水比）の維持、材料コストの維持のいずれの点においても極めて有利となる。
したがって、この吹付け装置Ｍによれば、調整済みの粘性を有する材料を上釜１や下釜３の内壁や羽根２２、４２に付着しにくくして、材料のほぐし性能や掻き取り能力を良好に維持し、別途調整済みの粘性を有するベントナイト系材料をそのまま細かくほぐしながら吹き付けることができ、従来に比べて材料吹付けの施工性を大幅に向上させることができる。 As described above, in the bentonite-based material spraying apparatus M, the rotary blade mechanisms 2 and 4 of the upper hook 1 and the lower hook 3 have a plurality of blades 22 and 42 formed in a predetermined shape as described above. Since the rotary shafts 21 and 41 are attached in a predetermined arrangement as described above, the bases of the blades 22 and 42 extending at right angles to the rotary shafts 21 and 41 in the upper hooks 1 and the lower hook 3 are provided. At the end sides 227 and 427 that are bent toward the material outlets 12 and 32 of the blades 22 and 42, the bentonite-based material having the viscosity adjusted separately on both ends 224 and 424 is cut and loosened finely and sufficiently. The material can be reliably sent out in the direction of the material outlets 12 and 32 while being scraped from the entire inner wall of the upper hook 1 and the lower hook 3.
That is, in this spraying device M, without adding or cooling the bentonite-based material or cooling the bentonite-based material as in the past, the bentonite-based material having a separately adjusted viscosity is finely unwound as it is, It can be pumped through a hose and sprayed from a nozzle, which is extremely advantageous in terms of both the maintenance of material quality (water content ratio) and the maintenance of material costs, as compared with the prior art.
Therefore, according to this spraying device M, the adjusted viscosity material is made difficult to adhere to the inner walls of the upper hook 1 and the lower hook 3 and the blades 22 and 42, and the material unraveling performance and scraping ability are improved. The bentonite material having a viscosity that has been separately adjusted can be sprayed as it is finely loosened, and the workability of material spraying can be greatly improved as compared with the prior art.

さらに、この吹付け装置Ｍは、次のような利点を有する。
（１）上釜１，下釜３の各回転羽根機構２，４は、送り用の複数の羽根２２，４２又は押し戻し用の複数の羽根２２，４２のうち、同じ取付角度で取り付けられる羽根２２同士，４２同士の間に、材料の付着性に応じて定められた一定の間隔が確保されるので、各羽根２２，４２の基端側２２４，４２４の各面で材料に切り込みを入れ、各羽根２２，４２の先端側２２７，４２７の曲面で材料を材料出口１２，３２の周囲から材料出口１２，３２に向けて送る動作を繰り返す間に、同じ取付角度で取り付けられる羽根２２同士、４２同士の間に材料が付着して詰まるのを防止することができる。
（２）特に、下釜３の回転羽根機構４は、回転軸４１の材料出口３２付近の所定の位置に羽根４２が取り付けられない区間が設けられて、材料出口３２上に材料の付着性に応じて定められた所定の空間が確保されるので、材料が材料出口３２側に送る力によって、過剰に締め固められるのを防止することができる。
（３）特に、下釜３の各回転羽根機構４は、押し戻し用の複数の羽根４２のうち、材料出口３２に近接する羽根４２につき先端側４２７が材料出口３２上を通過可能に配置されるので、材料が材料出口３２に向けて集中し材料出口３２を完全に塞いで詰まりが生じる恐れがある場合に、材料出口３２に近接する羽根４２の回転で、材料出口３２上の余分な材料を除去して、材料出口３２の詰まりを防止することができる。
（４）上釜１，下釜３の各回転羽根機構２，４は、必要に応じて、送り用の複数の羽根２２，４２の中に、羽根２２，４２が先端側２２７，４２７を材料出口１２，３２側とは反対方向に向けて取り付けられ、先端側２２７，４２７が反転された羽根２２，４２が混在されるようにしたので、先端側２２７，４２７が反転された羽根２２，４２で、材料を材料出口１２，３２とは反対方向に押し戻すことで、材料が材料出口１２，３２側に集中しすぎるのを防止することができ、特に、材料が締め固まりやすい場合に効果が大きい。
（５）上釜１，下釜３の各回転羽根機構２，４は、各羽根２２，４２の基端部２２３，４２３近傍にねじ挿通部２２０，４２０を有し、回転軸２１，４１の周面にねじ挿通部２１０，４１０を有するステー２１１，４１１が固着され、各羽根２２，４２は回転軸２１，４１にステー２１１，４１１を介してボルト及びナットにより締結され、回転軸２１，４１の周面に任意の取付角度に調整可能に、また、回転軸２１，４１に取り付ける羽根の数２２，４２若しくは羽根２２，４２の間隔を変更可能に取り付けられるので、上釜１、下釜３の大きさ及び形状に応じて、各羽根２２，４２を先端側２２７，４２７が上釜１、下釜３の内壁に近接して回転するように回転軸２１，４１の各ステー２１１，４１１に取り付けて、上釜１、下釜３の内部で各羽根２２，４２により材料を内壁に沿って掻き取りながら撹拌又はほぐして、材料出口１２，３２に向けて送ることができ、また、材料の質（付着性）や量など必要に応じて、羽根２２，４２の数、羽根２２，４２の間隔を増減して、材料の撹拌又はほぐし状態を調整することができる。
（６）上釜１，下釜３の各回転羽根機構２，４は、各ステー２１１，４１１のねじ挿通部２１０，４１０が各ステー２１１，４１１の長さ方向に長い長穴状に形成されて、各羽根２２，４２が回転軸２１，４１のステー２１１，４１１に外周方向に向けて伸縮可能に取り付けられるので、上記と同様に、上釜１、下釜３の大きさ及び形状に応じて、各羽根２２，４２を先端側２２７，４２７が上釜１、下釜３の内壁に近接して回転するように回転軸２１，４１の各ステー２１１，４１１に取り付けて、上釜１、下釜３の内部で各羽根２２，４２により材料を内壁に沿って掻き取りながら撹拌又はほぐして、材料出口１２，３２に向けて送ることができる。なお、各羽根２２，４２のねじ挿通部２２０，４２０が各羽根２２，４２の長さ方向に長い長穴状に形成されて、各羽根各羽根２２，４２が回転軸２１，４１のステー２１１，４１１に外周方向に向けて伸縮可能に取り付けられるようにしても、同様である。
（７）上釜１，下釜３の各回転羽根機構２，４は、各羽根２２，４２の基端部２２３，４２３が嵌合可能なストッパー２１２，４１２が各回転軸２１，４１の周面又はステー２１１，４１１に固着され、このストッパー２１２，４１２により各羽根２２，４２の回転方向の動きを規制するので、各羽根２２，４２の取付角度を確実に保持して、各羽根２２，４２による材料の撹拌又はほぐし、及び材料の送りを確実に行うことができる。 Furthermore, this spraying device M has the following advantages.
(1) The rotary blade mechanisms 2 and 4 of the upper hook 1 and the lower hook 3 are blades 22 attached at the same attachment angle among the plurality of blades 22 and 42 for feeding or the plurality of blades 22 and 42 for pushing back. , 42 is secured at a certain interval determined according to the adhesion of the material, so that the material is cut on each surface of the base end side 224, 424 of each blade 22, 42, and each blade While the operation of sending the material from the periphery of the material outlets 12 and 32 toward the material outlets 12 and 32 is repeated on the curved surfaces of the distal end sides 227 and 427 of the blades 22 and 42, It is possible to prevent clogging due to adhesion of the material therebetween.
(2) In particular, the rotary blade mechanism 4 of the lower hook 3 is provided with a section where the blade 42 is not attached at a predetermined position in the vicinity of the material outlet 32 of the rotary shaft 41, depending on the material adhesion on the material outlet 32. Therefore, the material can be prevented from being excessively compacted by the force sent to the material outlet 32 side.
(3) In particular, each rotary blade mechanism 4 of the lower hook 3 is arranged such that the tip side 427 of the blades 42 close to the material outlet 32 out of the plurality of blades 42 for pushing back can pass over the material outlet 32. Rotation of the blades 42 adjacent to the material outlet 32 removes excess material on the material outlet 32 when the material is concentrated towards the material outlet 32 and may completely clog the material outlet 32 Thus, clogging of the material outlet 32 can be prevented.
(4) The rotary blade mechanisms 2 and 4 of the upper hook 1 and the lower hook 3 are arranged such that the blades 22 and 42 pass the tip end sides 227 and 427 into the material outlets among the plurality of blades 22 and 42 for feeding. Since the blades 22 and 42 are mounted in the opposite direction to the 12 and 32 sides and the tip sides 227 and 427 are inverted, the blades 22 and 42 are inverted at the tip sides 227 and 427. By pushing the material back in the direction opposite to the material outlets 12 and 32, it is possible to prevent the material from concentrating too much on the material outlets 12 and 32 side, and this is particularly effective when the material is easily compacted.
(5) The rotary blade mechanisms 2 and 4 of the upper hook 1 and the lower hook 3 have screw insertion portions 220 and 420 in the vicinity of the base end portions 223 and 423 of the blades 22 and 42, respectively. The stays 211 and 411 having screw insertion portions 210 and 410 are fixed to the surface, and the blades 22 and 42 are fastened to the rotary shafts 21 and 41 by bolts and nuts via the stays 211 and 411, respectively. Since it can be attached to the peripheral surface so that it can be adjusted to an arbitrary mounting angle, and the number of blades 22 and 42 attached to the rotary shafts 21 and 41 or the interval between the blades 22 and 42 can be changed, the size of the upper hook 1 and the lower hook 3 Depending on the length and shape, the blades 22 and 42 are attached to the stays 211 and 411 of the rotary shafts 21 and 41 so that the distal ends 227 and 427 rotate close to the inner walls of the upper hook 1 and the lower hook 3, Inside of upper pot 1 and lower pot 3 With the blades 22 and 42, the material can be stirred or loosened while being scraped along the inner wall and sent to the material outlets 12 and 32, and the quality (adhesiveness) and quantity of the material can be adjusted as necessary. The number of blades 22 and 42 and the interval between the blades 22 and 42 can be increased or decreased to adjust the stirring or unraveling state of the material.
(6) The rotary blade mechanisms 2 and 4 of the upper hook 1 and the lower hook 3 are formed so that the screw insertion portions 210 and 410 of the stays 211 and 411 are elongated holes in the length direction of the stays 211 and 411. Since the blades 22 and 42 are attached to the stays 211 and 411 of the rotary shafts 21 and 41 so as to extend and contract in the outer peripheral direction, in the same manner as described above, depending on the size and shape of the upper hook 1 and the lower hook 3, The blades 22 and 42 are attached to the stays 211 and 411 of the rotary shafts 21 and 41 so that the distal end sides 227 and 427 rotate close to the inner walls of the upper hook 1 and the lower hook 3. The material can be stirred or loosened while scraping along the inner wall by the blades 22 and 42 and sent to the material outlets 12 and 32. The screw insertion portions 220 and 420 of the blades 22 and 42 are formed in a long hole shape in the length direction of the blades 22 and 42, and the blades 22 and 42 of the blades are stays 211 of the rotating shafts 21 and 41. , 411 may be attached so as to be extendable in the outer peripheral direction.
(7) The rotary blade mechanisms 2 and 4 of the upper hook 1 and the lower hook 3 have stoppers 212 and 412 into which the base end portions 223 and 423 of the blades 22 and 42 can be fitted, and the peripheral surfaces of the rotary shafts 21 and 41. Alternatively, the blades 22 and 42 are fixed to the stays 211 and 411, and the movements of the blades 22 and 42 in the rotational direction are restricted by the stoppers 212 and 412. The material can be stirred or loosened and the material can be reliably fed.

なお、この実施の形態では、下釜に水平方向に長い（円）筒形の圧力釜を採用し、上部の一端側に材料入口、下部の他端側に材料出口を設けたものとしたが、この材料入口、材料出口は、相互に、同一鉛直線上にない水平方向に離れた位置に設けられていればよく、その位置は任意に変更可能である。例えば、上部の他端側に材料入口、下部の一端側に材料出口を設けてもよく、上部の中央付近に材料入口、下部の一端側又は他端側に材料出口を設けてもよく、上部の一端側又は他端側に材料入口、下部の中央付近に材料出口を設けてもよい。材料出口を下部の中央付近に設けた場合、送り用、押し戻し用の複数の羽根はそれぞれ、材料出口の両側に、複数枚（例えば３枚）１組が複数組ずつ配列される。
また、この実施の形態では、上釜の釜に釜形の圧力釜を採用し、下釜と異なる構造の釜としたが、これは、（円）筒形の釜に比べて変則的になる釜形の釜内での羽根の取り付けを例示するためで、上釜と下釜は同じ構造の圧力釜としてもよい。すなわち、上釜に、上部に材料入口、下部に材料出口を有する水平方向に長い（円）筒形の圧力釜を採用し、材料出口に向けた羽根、材料が締め固まるのを防止する羽根のない空間、材料出口の材料の閉塞を防止する材料出口上を通過する羽根など、下釜と同様の構成を備えたものとしてもよい。このようにすることで、下釜と同様の作用効果を得ることができる。 In this embodiment, a horizontal (long) cylindrical pressure cooker is adopted as the lower hook, and a material inlet is provided at one upper end and a material outlet is provided at the other lower end. The material inlet and the material outlet need only be provided at positions that are not on the same vertical line but are separated from each other in the horizontal direction, and the positions can be arbitrarily changed. For example, a material inlet may be provided at the other end of the upper portion, a material outlet may be provided at one end of the lower portion, a material inlet may be provided near the center of the upper portion, and a material outlet may be provided at one end or the other end of the lower portion. A material inlet may be provided on one end side or the other end side, and a material outlet may be provided near the center of the lower portion. When the material outlet is provided near the center of the lower part, a plurality of pairs (for example, three) of a plurality of blades for feeding and pushing back are arranged on both sides of the material outlet.
In this embodiment, a hook-shaped pressure hook is adopted as the upper hook, and the hook has a structure different from that of the lower hook. However, this is an irregular hook compared to the (circle) cylindrical hook. In order to exemplify the attachment of the blades in the shape of the hook, the upper hook and the lower hook may be a pressure hook having the same structure. In other words, a horizontally long (circular) cylindrical pressure cooker having a material inlet at the top and a material outlet at the bottom is adopted as the upper hook, and the blades directed toward the material outlet and the blades that prevent the material from being compacted are used. It is good also as what was equipped with the structure similar to a lower hook, such as a blade | blade which passes on the material outlet which prevents obstruction | occlusion of the material which has no space and material outlet. By doing in this way, the effect similar to a lower hook can be acquired.

Ｍベントナイト系材料の吹付け装置
Ｍ１吹付機
１上釜
１０圧力釜
１１材料入口
１２材料出口
１３ホッパー
２回転羽根機構
２１回転軸
２１０ねじ挿通部
２１１ステー（取付部材）
２１２ストッパー
２２羽根
２２０ねじ挿通部（ねじ穴）
２２１外側の湾曲縁
２２２内側の湾曲縁
２２３基端部
２２４基端側
２２５略中間部
２２６先端部
２２７先端側
３下釜
３０圧力釜
３１材料入口
３２材料出口
４回転羽根機構
４１回転軸
４１０ねじ挿通部
４１１ステー（取付部材）
４１２ストッパー
４２羽根
４２０ねじ挿通部（ねじ穴）
４２１外側の湾曲縁
４２２内側の湾曲縁
４２３基端部
４２４基端側
４２５略中間部
４２６先端部
４２７先端側
５駆動部
６台車 M Bentonite material spraying device M1 Spraying machine 1 Upper hook 10 Pressure hook 11 Material inlet 12 Material outlet 13 Hopper 2 Rotary blade mechanism 21 Rotating shaft 210 Screw insertion part 211 Stay (mounting member)
212 Stopper 22 Blade 220 Screw insertion part (screw hole)
221 Outside curved edge 222 Inside curved edge 223 Base end portion 224 Base end side 225 Substantially middle portion 226 Tip portion 227 Tip side 3 Lower hook 30 Pressure hook 31 Material inlet 32 Material outlet 4 Rotary blade mechanism 41 Rotating shaft 410 Screw insertion part 411 stay (mounting member)
412 Stopper 42 Blade 420 Screw insertion part (screw hole)
421 Outside curved edge 422 Inside curved edge 423 Base end portion 424 Base end side 425 Substantially middle portion 426 Tip portion 427 Tip side 5 Drive portion 6 Carriage

Claims

It consists of a hook having a material inlet that is opened and closed by a gate valve at the upper part and a material outlet that is opened and closed by a gate valve at the lower part, and has a means for pressurizing and depressurizing the inside, and a rotary blade mechanism consisting of a rotating shaft and a plurality of blades. And a means for pressurizing and depressurizing the inside, a rotating shaft and a plurality of blades. The upper pot accommodates material, and the upper part has a material inlet communicating with the material outlet of the upper hook, and the lower part has a material outlet. A spraying machine having a rotary vane mechanism composed of:
A compressor connected to each means for pressurizing the interior of the sprayer and supplying air;
A nozzle that is connected to the material outlet of the lower pot via a hose and blows out the material;
With
The rotary blade mechanism is
Each of the plurality of blades is generally arcuate as a whole, has a predetermined width between an outer curved edge and an inner curved edge, and a proximal end from a proximal end portion attached to the rotating shaft to a substantially intermediate portion. Both sides on the side are in a planar shape extending substantially linearly, and both sides on the tip side from the substantially middle part to the tip part are curved so as to bend gradually from one side of the tip side from the substantially middle part to the tip part. Formed into
These blades are divided into those for feeding the material to the outlet and those for pushing the material that has passed through the outlet,
The plurality of blades for feeding are directed to the outlet side of the spraying machine, and the one side of the outlet side of the rotating shaft is sequentially arranged on one side of the rotating shaft, one of the base end sides of the blades. At a distance corresponding to or smaller than the protruding distance on the tip side in a direction perpendicular to the surface, the angle is changed and the predetermined angle phase is changed.
The plurality of push-back blades have their front ends directed toward the outlet side of the sprayer, and sequentially on one side of the outlet on the peripheral surface of the rotating shaft, one of the blades on the base end side. At a distance corresponding to or smaller than the protruding distance on the tip side in a direction perpendicular to the surface, the angle is changed and the predetermined angle phase is changed.
The bentonite-based material having adjusted viscosity is loosened by the rotary blade mechanism in the upper and lower pots and sent to the material outlet of the lower pot, and is pumped through the hose and sprayed from the nozzle.
A bentonite-based material spraying device.

The lower hook is composed of a cylindrical pressure hook which is long in the horizontal direction, and the material inlet is provided in the upper part and the material outlet is provided in the lower part. A bentonite-based material spraying device.

The apparatus for spraying bentonite-based material according to claim 1 or 2, wherein the upper hook is composed of a pressure pot having the same or different structure from the lower hook.

The fixed space | interval defined according to the adhesiveness of material is ensured between the blade | wings attached with the same attachment angle among the several blade | wing for sending or several blade | wings for pushing back. A bentonite-based material spraying device according to any one of the above.

The section where the blade is not attached is provided at a predetermined position near the material outlet of the rotating shaft, and a predetermined space determined according to the adhesion of the material is secured on the material outlet. Bentonite material spraying equipment.

The bentonite-based material spraying device according to any one of claims 1 to 5, wherein, among the plurality of push-back blades, the tip side of the blade close to the material outlet is disposed so as to pass over the material outlet.

7. The blade according to any one of claims 1 to 6, wherein a plurality of blades for feeding are attached, if necessary, with the blades attached with the tip side directed in the direction opposite to the material outlet side and the tip side reversed. A bentonite-based material spraying apparatus according to claim 1.

A mounting member having a screw insertion portion at the base end portion of each blade and a screw insertion portion being fixed to the peripheral surface of the rotating shaft is fastened by bolts and nuts to the rotating shaft via the mounting member. The bentonite-based material according to any one of claims 1 to 7, wherein the bentonite-based material is attached to the peripheral surface of the rotating shaft so as to be adjustable to an arbitrary mounting angle, or to be able to change the number of blades attached to the rotating shaft or the interval between the blades. Spraying device.

The screw insertion portion of each mounting member or each blade is formed in a long hole shape that is long in the length direction of each mounting member or each blade, and each blade can be expanded and contracted toward the outer peripheral direction of the mounting member of the rotating shaft. The apparatus for spraying bentonite-based material according to claim 8 to be attached.

The bentonite system according to claim 8 or 9, wherein a stopper with which a base end portion of each blade can be fitted is fixed to a peripheral surface or a mounting member of each blade, and the movement of each blade in the rotation direction is regulated by the stopper. Material spraying device.