JP6778009B2 - Powder separator - Google Patents
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- JP6778009B2 JP6778009B2 JP2016074508A JP2016074508A JP6778009B2 JP 6778009 B2 JP6778009 B2 JP 6778009B2 JP 2016074508 A JP2016074508 A JP 2016074508A JP 2016074508 A JP2016074508 A JP 2016074508A JP 6778009 B2 JP6778009 B2 JP 6778009B2
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Description
本発明は、粒体やペレット（プラスチックペレット等）などから、該粒体，ペレットに付着，混入している粉体やフロス（絹糸のような細い糸状のゴミ）などを分離する装置に関する。 The present invention relates to an apparatus for separating powder or floss (fine thread-like dust such as silk thread) adhering to or mixed with the granules or pellets (plastic pellets or the like).
空気を旋回上昇させて軽い分離対象物を上部に排出し、製品を重量により落下させるようにした方式の分離装置が実用に供されている。この分離装置は、プラスチックペレットからフロスを除去したり，破砕品，造粒品から微粉を分離したり、さらには穀類，食品などから異物を分離，除去することなどに用いられる。
本件発明者は高い分離精度を持つこの種の分離装置を既に提案し実施している（特許文献１）。
まず、図５を用いてこの分離装置の構成および動作を説明する。
分離装置は空気と粒体および粉体等を吸い込み（あるいは吹き込んで）分離を行ない（１次空気利用）、その下方で２次空気を吹き込み、さらには完全な分離を実現するために、２次空気送出手段の下から３次空気を吹き込むように構成されている。
A separation device of a type in which air is swirled up to discharge a light separation object to the upper part and the product is dropped by weight is put into practical use. This separation device is used for removing floss from plastic pellets, separating fine powder from crushed products and granulated products, and separating and removing foreign substances from grains, foods, and the like.
The present inventor has already proposed and implemented this type of separation device having high separation accuracy (Patent Document 1).
First, the configuration and operation of this separation device will be described with reference to FIG.
The separation device sucks (or blows) air, particles, powder, etc. to separate them (using primary air), blows secondary air below them, and further, in order to achieve complete separation, secondary It is configured to blow tertiary air from below the air delivery means.
図５において、円筒部１の壁内面に開口する接線導入管４が接続されている。接線導入管４はその中心軸が円筒部１の内壁の接線に平行で、水平またはやや上向きに接続されている。１次空気（Ｉ）が形成する気流は管内壁に沿って上方向に向かって旋回しようとする。しかしながら２次空気用送風機６から２次空気吹込室５に２次空気を導入しているため、円筒部１の中心の気流は全体として上昇気流となる。 In FIG. 5, a tangent introduction pipe 4 that opens to the inner surface of the wall of the cylindrical portion 1 is connected. The central axis of the tangent introduction pipe 4 is parallel to the tangent of the inner wall of the cylindrical portion 1 and is connected horizontally or slightly upward. The airflow formed by the primary air (I) tends to swirl upward along the inner wall of the pipe. However, since the secondary air is introduced from the secondary air blower 6 into the secondary air blowing chamber 5, the airflow at the center of the cylindrical portion 1 becomes an updraft as a whole.
円筒部１はその上部に、排気管２を有している。排気管２には、排気用送風機７が接続されており、吸引方式で空気と粉体等１６は円筒部１の上部から引き出される。
排気管２は、円筒部１で気流の旋回方向とは逆方向に向かって開口している（図２参照）。接線導入管４にはホッパ１０から、粉体等を含む粒体が輸送管９を介して供給される。
The cylindrical portion 1 has an exhaust pipe 2 above it. An exhaust blower 7 is connected to the exhaust pipe 2, and air, powder, and the like 16 are drawn out from the upper part of the cylindrical portion 1 by a suction method.
The exhaust pipe 2 is opened in the cylindrical portion 1 in a direction opposite to the swirling direction of the air flow (see FIG. 2). Granules containing powder or the like are supplied from the hopper 10 to the tangent introduction pipe 4 via the transport pipe 9.
円筒部１の下端には円錐筒部３が配置されている。この円錐筒部３の下端開口と下側の下部円筒部１３との間にスリットが形成され、このスリットは２次空気吹込室５に囲まれている。２次空気吹込室５から、スリットを介して２次空気（II）がスタビライザ１２の斜面に向けて吹き込まれる。スタビライザ１２の鍔の部分が粉体等の吹き上げを助ける。また、２次空気吹込手段の下方から、３次空気（III）を上向きに吹き込み落下しようとする粉体等１６を吹き上げる。スタビライザ１２の下の下部円筒部１３には３次空気用送風機１８が配置されている。 A conical cylinder portion 3 is arranged at the lower end of the cylindrical portion 1. A slit is formed between the lower end opening of the conical cylinder portion 3 and the lower cylindrical portion 13 on the lower side, and this slit is surrounded by the secondary air blowing chamber 5. Secondary air (II) is blown from the secondary air blowing chamber 5 toward the slope of the stabilizer 12 through the slit. The flange portion of the stabilizer 12 helps blow up powder or the like. Further, from below the secondary air blowing means, the tertiary air (III) is blown upward to blow up the powder or the like 16 that is about to fall. A tertiary air blower 18 is arranged in the lower cylindrical portion 13 below the stabilizer 12.
２次空気吹込室５には２次空気用送風機６が接続され、スリットを介して２次空気が全周から容器内に吹き込まれる。下部円筒部１３の下端にはエアロッカ排出機を形成するロータリーバルブ８が設けられている。ロータリーバルブ８は気密を保って回転し、粒体１５のみを排出する。 A secondary air blower 6 is connected to the secondary air blowing chamber 5, and secondary air is blown into the container from the entire circumference through a slit. A rotary valve 8 forming an air rocker ejector is provided at the lower end of the lower cylindrical portion 13. The rotary valve 8 rotates while maintaining airtightness, and discharges only the granular material 15.
粒体に混じっている粉体等はつぎのようなステップによって分離される。
（１次分離ステップ）分離対象である粉体等を含む粒体は、ホッパ１０から輸送管９を介して供給され、吸入された１次空気（Ｉ）と共に円筒部１の内部の、円筒内壁面に沿って接線方向かつ水平、またはやや上向きに導入され、１次分離ステップが開始される。
粒体中に混じっている粒体の一部と粉体等の大部分が旋回上昇気流によってその排気管２の入口開口２ａ（図２参照）に導かれる。粒体１５は、自重で下方の円錐筒部３に落下する。
The powder or the like mixed in the granules is separated by the following steps.
(Primary Separation Step) The granules containing the powder or the like to be separated are supplied from the hopper 10 via the transport pipe 9, and together with the sucked primary air (I), are inside the cylinder, inside the cylinder 1. Introduced tangentially and horizontally or slightly upwards along the wall surface to initiate the primary separation step.
A part of the granules mixed in the granules and most of the powder or the like are guided to the inlet opening 2a (see FIG. 2) of the exhaust pipe 2 by the swirling updraft. The granular material 15 falls to the lower conical cylinder portion 3 by its own weight.
（２次分離ステップ）１次分離ステップで下方の円錐筒部３に落下してくる粒体１５に対し、円錐筒部３の下部空間にスリットから高速の２次空気を吹き込んで粒体に付着している粉体を剥離し、更に残存する粉体等を１次分離ステップが行なわれる円筒部空間に吹き上げる。
（３次分離ステップ）３次空気（III）の導入によりスタビライザ１２の鍔と下側の下部円筒部１３の内径管から落下しようとする粉体等１６を吹き上げる。粒体１５はさらに落下する。
（搬出ステップ）粉体等が除去された粒体１５は、円錐筒部３の下端からさらに下部円筒部１３を通過して落下し、下端排出部からロータリーバルブ８の動作により連続的に取り出される。
(Secondary separation step) With respect to the granular material 15 falling into the lower conical cylinder portion 3 in the primary separation step, high-speed secondary air is blown into the lower space of the conical cylinder portion 3 from a slit and adheres to the granular material. The powder is peeled off, and the remaining powder or the like is blown up into the cylindrical space where the primary separation step is performed.
(3rd Separation Step) By introducing the tertiary air (III), the powder or the like 16 that is about to fall is blown up from the flange of the stabilizer 12 and the inner diameter pipe of the lower lower cylindrical portion 13. The granular material 15 further falls.
(Delivery step) The granular material 15 from which the powder or the like has been removed falls from the lower end of the conical cylinder portion 3 through the lower cylindrical portion 13 and is continuously taken out from the lower end discharge portion by the operation of the rotary valve 8. ..
さて、この分離装置は２次空気の高速ブローと、３次空気吹き上げにより、製品の高い分離回収率で粉体等を分離排除する効果を得ている。しかしながら、円筒体の上部から落下してくる粒体の２次空気による吹き込みは、スタビライザの鍔を介して粒体を真上に飛ばしているため、粒体の中には円筒体の最頂部付近まで巻き上がり、排気管より粉体等とともに排気されてしまうものがあった。粉体等の高い分離回収率を得ているものの、製品にする粒体のロスが少なからず発生するという問題があった。 By the way, this separation device has an effect of separating and eliminating powder and the like with a high separation and recovery rate of the product by high-speed blowing of secondary air and blowing up of tertiary air. However, since the secondary air blowing of the granules falling from the upper part of the cylinder causes the granules to fly directly above through the flange of the stabilizer, some of the granules are near the top of the cylinder. Some of them were rolled up and exhausted from the exhaust pipe together with powder and the like. Although a high separation and recovery rate for powders and the like has been obtained, there is a problem that not a little loss of granules to be produced is generated.
本発明の目的は、粒体やペレットから粉体，フロスなどを分離する上記のような分離装置において、排気管から粉体やフロスとともに排出される粒体やペレットを極力少なくして粒体やペレットの回収効率を向上させるとともに装置自体を小形化することができる、粉体等の分離装置を提供することにある。 An object of the present invention is to reduce the amount of granules and pellets discharged from the exhaust pipe together with the powder and floss as much as possible in the above-mentioned separation device for separating powders and floss from the granules and pellets. It is an object of the present invention to provide a powder or the like separation device capable of improving the recovery efficiency of pellets and downsizing the device itself.
前記目的を達成するために本発明による請求項１記載の粉体の分離装置は、上部に粉体，フロスを排出する排気管が配置された円筒部と、前記円筒部の下部に設けられた円錐筒部と、前記円錐筒部の下部中央に設けられたスタビライザであって、２つの円錐形状体の底面を合わせて一体化した形状に形成されて前記円錐形状体の２つの頂部が前記円筒部及び前記円錐筒部の軸方向と平行な上下方向に配置されたコマと、円形状の底面を有する鍔と、上下方向にのびて前記コマと前記鍔とを連結する連結部材とを有し、前記連結部材は、前記コマの下方の円錐形状体の頂部と前記鍔の上部中央とを連結し、当該連結部材の下部において、上方から下方の前記鍔の円周部に向かって断面積が徐々に大きくなるように斜面が形成されている、スタビライザと、前記円筒部で粉体，フロスを含む粒体及びペレットが混合された１次空気を接線方向から前記円筒部の内周に沿って旋回するように送出する１次空気送出手段と、前記円錐筒部の下部の側壁に設けられた円周スリットから前記スタビライザの前記斜面に向けて２次空気を送出する２次空気送出手段と、前記２次空気送出手段の下方から３次空気を吹き込む３次空気用送風機と、前記３次空気の吹き込み口より下から気密を保って粒体，ペレットを排出する排出手段と、を備える分離装置であって、前記スタビライザの前記斜面に向けて送出された前記２次空気は、前記スタビライザの前記斜面に当たって整流された上昇気流に方向変換され、さらに前記コマに当たることにより前記円筒部または前記円錐筒部の内壁面方向に向きが変えられるように構成されており、当該２次空気は、落下してきた粉体，フロスを前記円筒部まで上昇させるように構成されており、吹き込まれた前記３次空気は、下方は前記排出手段によって気密が保たれているために上方に吹き上がり、落下してきた粉体，フロスを上昇させ、前記２次空気と共に当該粉体，フロスを前記円筒部まで上昇させるように構成されていることを特徴とする。
前記円錐形状体のコマの円錐面の角度は、適切な角度に設定することができるが、円筒体の軸に対し略４５°に設定すれば、ペレットの真上への上昇を有効に抑えることが可能となる。
また、前記排気管は、その入口が、前記旋回方向とは反対方向に向かって開口する接線排気管を採用することができる。
さらに、前記１次空気送出手段は、前記円筒部の内壁面の接線方向に水平または上方に向かって開口する接線導入管を備えた構成にすることができる。
なお、本発明による粉体の分離装置の分離手順は、上から順に排気管、円筒状の１次分離空間、円錐状の２次分離空間、搬出口を備える縦形筒を用いて、粒体，ペレットから粉体，フロス等を分離する手順であって、分離対象である前記粉体、フロス等を含む粒体，ペレットを１次空気と共に、前記１次分離空間内の円筒内壁面に沿って略水平または僅かに上方に向かって旋回する方向に導入し、前記粒体中，ペレット中に混じっている粉体，フロス等の大部分を円筒内の気流によって上昇させて、前記排気管から排出分離し、粒体，ペレットを自重で２次分離空間に落下させる１次分離ステップと、前記２次分離空間の円錐筒部に落下してくる粒体，ペレットに対し、前記２次分離空間の下部のスリットから中心に向かって高速空気を吹き込み粒体やペレットに付着している粉体を剥離し、残存の粉体，フロス等を前記１次分離空間に吹き上げる２次分離ステップと、前記２次分離ステップで真上に吹き上げられた粉体，フロス等を含む２次空気を前記円筒内壁面の方向に向かうように方向変換させる２次空気方向変換ステップと、前記２次空気の吹き込み位置の下方から３次空気を吹き込み残存の粉体，フロス等を前記２次分離空間に吹き上げる３次分離ステップと、前記円錐筒部の下の搬出口から粉体，フロス等を除去した粒体，ペレットを連続的に取り出す搬出ステップとを含むものである。
In order to achieve the above object, the powder separating device according to claim 1 according to the present invention is provided with a cylindrical portion in which an exhaust pipe for discharging powder and floss is arranged in the upper portion and a lower portion of the cylindrical portion. A stabilizer provided in the center of the lower part of the conical tube portion and the conical tube portion, the bottom surfaces of the two conical bodies are combined to form an integrated shape, and the two tops of the conical body are the cylinder. It has a piece arranged in the vertical direction parallel to the axial direction of the portion and the conical tube portion, a flange having a circular bottom surface, and a connecting member extending in the vertical direction to connect the frame and the flange. The connecting member connects the top of the conical body below the top and the center of the upper part of the flange, and the cross-sectional area of the lower portion of the connecting member is increased from above to the circumference of the flange below. A stabilizer in which a slope is formed so as to gradually increase, and primary air in which particles and pellets containing powder and floss are mixed in the cylindrical portion are tangentially directed along the inner circumference of the cylindrical portion. A primary air delivery means that sends out in a swirling manner, and a secondary air delivery means that sends out secondary air from a circumferential slit provided in the lower side wall of the conical cylinder portion toward the slope of the stabilizer . comprising a tertiary air blower Komu blown downward or et tertiary air of the secondary air delivery means, granules and hermetically from below blowing port of the tertiary air, and discharge means for discharging the pellets, the a separating device, the secondary air delivered toward the inclined surface of the front SL stabilizer is redirecting the updraft is rectified when the slope of the stabilizer, the cylindrical portion or by further impinging on the frame the orientation on the inner wall surface direction of the tapered tubular portion is configured to varying Erareru so, the secondary air, the powder has been dropped, which is configured to increase the floss to the cylindrical portion, blown The lower part of the tertiary air is blown upward because the airtightness is maintained by the discharging means, and the falling powder and floss are raised, and the powder and floss are combined with the secondary air into the cylinder. It is characterized in that it is configured to be raised to a part .
The angle of the conical surface of the conical top of the conical body can be set to an appropriate angle, but if it is set to approximately 45 ° with respect to the axis of the cylindrical body, the rise of the pellet directly above can be effectively suppressed. Is possible.
Further, as the exhaust pipe, a tangential exhaust pipe whose inlet opens in a direction opposite to the turning direction can be adopted.
Further, the primary air delivery means may be configured to include a tangential introduction pipe that opens horizontally or upward in the tangential direction of the inner wall surface of the cylindrical portion.
In the separation procedure of the powder separation device according to the present invention, a vertical cylinder having an exhaust pipe, a cylindrical primary separation space, a conical secondary separation space, and a carry-out port is used in this order from the top. This is a procedure for separating powder, floss, etc. from pellets, and the particles and pellets containing the powder, floss, etc. to be separated are separated together with primary air along the inner wall surface of the cylinder in the primary separation space. It is introduced in a direction that swirls substantially horizontally or slightly upward, and most of the powder, floss, etc. mixed in the granules and pellets are raised by the air flow in the cylinder and discharged from the exhaust pipe. The primary separation step of separating and dropping the particles and pellets into the secondary separation space by their own weight, and the particles and pellets falling into the conical cylinder of the secondary separation space of the secondary separation space. The secondary separation step of blowing high-speed air from the lower slit toward the center to peel off the powder adhering to the granules and pellets and blowing the remaining powder, floss, etc. into the primary separation space, and the above 2 The secondary air direction changing step of changing the direction of the secondary air containing the powder, floss, etc. blown up directly above in the next separation step toward the inner wall surface of the cylinder, and the secondary air blowing position. A tertiary separation step in which tertiary air is blown from below to blow residual powder, floss, etc. into the secondary separation space, and granules, pellets in which powder, floss, etc. are removed from the carry-out port under the conical cylinder portion. It includes a carry-out step of continuously taking out.
上記構成によれば、コマの作用により真上に勢い良く上昇した粒体，ペレットは角度を持って壁方向に向きを変えるため、粒体，ペレットの円筒体上部への到達は抑えられ、製品とする粒体，ペレットのロスを格段に減少させることができる。また、粒体，ペレットの真上への上昇距離が小さくなり飛びにくくなるため、高さ方向の寸法を小さくすることができ、従来の分離装置に比較し、分離能力の向上を図りつつ装置の小形化を実現することができる。 According to the above configuration, the granules and pellets that have risen vigorously upward due to the action of the top turn toward the wall at an angle, so that the granules and pellets do not reach the upper part of the cylinder, and the product The loss of granules and pellets can be significantly reduced. In addition, since the climbing distance of the granules and pellets directly above is small and it is difficult to fly, the dimensions in the height direction can be reduced, and the separation capacity of the device can be improved compared to the conventional separation device. It is possible to realize miniaturization.
以下、図面を参照して本発明の実施の形態を詳しく説明する。
図１は本発明による粉体等の分離装置の実施の形態を示す概略正面図、図２は図１の分離装置のＡ−Ａ断面図，図３は本発明による粉体等の分離装置の２次空気挿入と３次空気挿入の関係を説明するための正面断面図である。
各図において、図５で用いた符号と同じ符号が付されている部分は、図５で説明した部分と同じ構造，機能を持つものである。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic front view showing an embodiment of a powder or the like separating device according to the present invention, FIG. 2 is a sectional view taken along the line AA of the separating device of FIG. 1, and FIG. 3 is a powder or the like separating device according to the present invention. It is a front sectional view for demonstrating the relationship between the secondary air insertion and the tertiary air insertion.
In each figure, the portion having the same reference numeral as that used in FIG. 5 has the same structure and function as the portion described in FIG.
したがって、円筒部２１の上部に上昇してきたフロス２６を排出する排気管２の円筒部２１への取り付け構造，その機能は図５と変わらない。また、ペレット２５の集合体を収容するホッパ１０，輸送管９の構造および１次空気（Ｉ）を導入する接線導入管４の円筒部２１への取り付け構造，円錐筒部３の形状，２次空気（II）を円錐筒部３の下部に吹き込む２次空気吹込室５の構造，３次空気（III）を取り込む下部円筒部１３，下部円筒部１３の下部に設置され、落下してくるペレット２５を分割した収容部で受け、回転させることにより下部に一定量ごと落下させるロータリーバルブ８の構造は図５と変わらない。 Therefore, the structure and function of the exhaust pipe 2 for discharging the floss 26 that has risen above the cylindrical portion 21 to the cylindrical portion 21 are the same as those in FIG. Further, the hopper 10 for accommodating the aggregate of pellets 25, the structure of the transport pipe 9, the attachment structure of the tangent introduction pipe 4 for introducing the primary air (I) to the cylindrical portion 21, the shape of the conical cylinder portion 3, and the secondary. The structure of the secondary air blowing chamber 5 that blows air (II) into the lower part of the conical cylinder 3, the lower cylindrical part 13 that takes in the tertiary air (III), and the falling pellets that are installed in the lower part of the lower cylindrical part 13. The structure of the rotary valve 8 is the same as that of FIG.
この実施の形態はホッパ１０に収容しているペレット２５に混合されていたり、ペレット２５に付着されていたりするフロス２６を排気管２から排出する場合の例である。
円筒部２１の形状は、図５の円筒部１に比較し高さ方向が小さくなっている。下部円筒部１３の上部に設けられているスタビライザ１２は、図３に示すような形の鍔１２ａを有するものである。スタビライザ１２の底面１２ｂは円形であり、下部円筒部１３の内部の直径をｄとすると、底面１２ｂの直径は０．４〜０．６ｄの寸法にしてある。下部円筒部１３の下方から３次空気を底面１２ｂの周囲部分から吹き上げ、ペレット２５を落下させる適切な空間を設けている。
This embodiment is an example in which the floss 26 mixed with the pellets 25 housed in the hopper 10 or attached to the pellets 25 is discharged from the exhaust pipe 2.
The shape of the cylindrical portion 21 is smaller in the height direction than that of the cylindrical portion 1 in FIG. The stabilizer 12 provided on the upper part of the lower cylindrical portion 13 has a collar 12a having a shape as shown in FIG. The bottom surface 12b of the stabilizer 12 is circular, and assuming that the inner diameter of the lower cylindrical portion 13 is d, the diameter of the bottom surface 12b is 0.4 to 0.6d. Tertiary air is blown up from the lower side of the lower cylindrical portion 13 from the peripheral portion of the bottom surface 12b to provide an appropriate space for dropping the pellets 25.
スタビライザ１２の中央部は上部に延長され、延長先に円錐形状体のコマ１９が連結されている。コマ１９は図４に示すように２つの円錐部１９ａ，１９ｂの底面を一体化して構成したものであり、円錐部１９ｂの円錐面１９ｃの角度は垂直に対し略４５°の傾斜となっている。上昇気流の多くは、円錐面１９ｃに沿って旋回しながら吹き上がり、円筒部２１や円錐筒部３の内壁面に向かう方向に変えられる。そのため円筒部２１を真っ直ぐ吹き上がる気流を抑制できる。 The central portion of the stabilizer 12 is extended to the upper part, and the cone-shaped piece 19 is connected to the extension destination. As shown in FIG. 4, the top 19 is formed by integrating the bottom surfaces of the two conical portions 19a and 19b, and the angle of the conical surface 19c of the conical portion 19b is approximately 45 ° with respect to the vertical. .. Most of the updraft blows up while swirling along the conical surface 19c, and is changed in the direction toward the inner wall surface of the cylindrical portion 21 and the conical tubular portion 3. Therefore, the airflow that blows straight up the cylindrical portion 21 can be suppressed.
つぎに本発明による分離装置によりペレットからフロス等を分離する場合のコマの製品飛散防止効果の測定例を説明する。
使用する分離装置は、図１に示す構成と同等であり、図６の（ａ）に示す構成（コマが存在しない）のスタビライザを用いた場合と、図６の（ｂ）に示すコマを有するスタビライザを用いた場合の製品飛散率を比較した。
使用するペレットのテストサンプルは、図７に示すプラスチックペレットで、かさ比重は０．５３，直径約３ｍｍ，厚み約１．７ｍｍのものを用いた。
製品ペレット５ｋｇを定量供給しながら連続運転を行い、飛散したペレットの重量を測定して製品飛散率を求めた。運転は定格風量で測定した（吸引風量：２．６ｍ3 ／ｍｉｎ，２次エアー：１．０ｍ3 ／ｍｉｎ，原料投入口：１．６ｍ3 ／ｍｉｎ）。
処理量は１００ｋｇ／ｈｒ，１５０ｋｇ／ｈｒ，２５０ｋｇ／ｈｒとした。
Next, a measurement example of the product scattering prevention effect of the top when separating floss or the like from pellets by the separation device according to the present invention will be described.
The separation device used is equivalent to the configuration shown in FIG. 1, and has a stabilizer having the configuration shown in FIG. 6 (a) (there is no coma) and a coma shown in FIG. 6 (b). The product scattering rates when a stabilizer was used were compared.
The test sample of the pellet used was a plastic pellet shown in FIG. 7, having a bulk specific gravity of 0.53, a diameter of about 3 mm, and a thickness of about 1.7 mm.
Continuous operation was performed while supplying a fixed amount of 5 kg of product pellets, and the weight of the scattered pellets was measured to determine the product scattering rate. The operation was measured at the rated air volume (suction air volume: 2.6 m 3 / min, secondary air: 1.0 m 3 / min, raw material inlet: 1.6 m 3 / min).
The treatment amounts were 100 kg / hr, 150 kg / hr, and 250 kg / hr.
測定結果を表す表１は、コマが存在しない場合で処理量がそれぞれ１００ｋｇ／ｈｒ，１５０ｋｇ／ｈｒ，２５０ｋｇ／ｈｒの場合、飛散ペレット重量（ｇ）は８７，６７，３３となり、それら製品飛散率（％）は１．７，１．３，０．６６となった。
測定結果を表す表２は、コマを有する場合で処理量がそれぞれ１００ｋｇ／ｈｒ，１５０ｋｇ／ｈｒ，２５０ｋｇ／ｈｒの場合、飛散ペレット重量（ｇ）は１．６，１．１，０．４７となり、それら製品飛散率（％）は０．０３２，０．０２２，０．００９４となった。
（評価）コマ有りは、コマ無しに比較し、飛散量は約１／５０倍に軽減された。また、処理量が増加することにより飛散率も小さくなることが理解できる。
Table 2 showing the measurement results shows that the scattered pellet weights (g) are 1.6, 1.1, 0.47 when the coma is held and the processing amounts are 100 kg / hr, 150 kg / hr, and 250 kg / hr, respectively. The scattering rate (%) of these products was 0.032, 0.022, 0.0094.
(Evaluation) With and without frames, the amount of scattering was reduced by about 1/50 times. In addition, it can be understood that the scattering rate decreases as the processing amount increases.
以上の実施の形態は、スタビライザの上に円錐面のコマを備えた例を説明したが、円錐面だけでなく、例えば円に近い角錐面のコマなどを設けても同様の効果を得ることができる。 In the above embodiment, an example in which a conical top is provided on the stabilizer has been described, but the same effect can be obtained by providing not only a conical top but also a pyramidal top that is close to a circle, for example. it can.
粒体やペレットなどから、該粒体，ペレットに付着，混入している粉体やフロス（絹糸のような細い糸状のゴミ）などを分離する分離装置である。 This is a separation device that separates powder and floss (fine thread-like dust such as silk thread) that adheres to and is mixed with the granules and pellets from the granules and pellets.
１，２１ 円筒部
２ 排気管
２ａ 排気管入口開口
３ 円錐筒部
４ 接線導入管
５ ２次空気吹込室
６ ２次空気用送風機
７ 排気用送風機
８ ロータリーバルブ（エアロッカ排出機）
９ 輸送管
１０ ホッパ
１２ スタビライザ
１３ 下部円筒部
１５ 粒体
１６ 粉体等
１８ ３次空気用送風機
１９ コマ（円錐形状体）
１９ａ，１９ｂ 円錐部
１９ｃ 円錐面
２５ ペレット
２６ フロス（絹糸のような細い糸状のゴミ）
1,21 Cylindrical part 2 Exhaust pipe 2a Exhaust pipe inlet opening 3 Conical cylinder part 4 Contact line introduction pipe 5 Secondary air injection chamber 6 Secondary air blower 7 Exhaust blower 8 Rotary valve (air rocker exhauster)
9 Transport pipe 10 Hopper 12 Stabilizer 13 Lower cylindrical part 15 Granules 16 Powder, etc. 18 Tertiary air blower 19 pieces (conical body)
19a, 19b Conical part 19c Conical surface 25 Pellet 26 Floss (thin thread-like dust like silk thread)
Claims (2)
前記円筒部の下部に設けられた円錐筒部と、
前記円錐筒部の下部中央に設けられたスタビライザであって、２つの円錐形状体の底面を合わせて一体化した形状に形成されて前記円錐形状体の２つの頂部が前記円筒部及び前記円錐筒部の軸方向と平行な上下方向に配置されたコマと、円形状の底面を有する鍔と、上下方向にのびて前記コマと前記鍔とを連結する連結部材とを有し、前記連結部材は、前記コマの下方の円錐形状体の頂部と前記鍔の上部中央とを連結し、当該連結部材の下部において、上方から下方の前記鍔の円周部に向かって断面積が徐々に大きくなるように斜面が形成されている、スタビライザと、
前記円筒部で粉体，フロスを含む粒体及びペレットが混合された１次空気を接線方向から前記円筒部の内周に沿って旋回するように送出する１次空気送出手段と、
前記円錐筒部の下部の側壁に設けられた円周スリットから前記スタビライザの前記斜面に向けて２次空気を送出する２次空気送出手段と、
前記２次空気送出手段の下方から３次空気を吹き込む３次空気用送風機と、
前記３次空気の吹き込み口より下から気密を保って粒体，ペレットを排出する排出手段と、を備える分離装置であって、
前記スタビライザの前記斜面に向けて送出された前記２次空気は、前記スタビライザの前記斜面に当たって整流された上昇気流に方向変換され、さらに前記コマに当たることにより前記円筒部または前記円錐筒部の内壁面方向に向きが変えられるように構成されており、当該２次空気は、落下してきた粉体，フロスを前記円筒部まで上昇させるように構成されており、
吹き込まれた前記３次空気は、下方は前記排出手段によって気密が保たれているために上方に吹き上がり、落下してきた粉体，フロスを上昇させ、前記２次空気と共に当該粉体，フロスを前記円筒部まで上昇させるように構成されている
ことを特徴とする粉体の分離装置。 A cylindrical part with an exhaust pipe that discharges powder and floss at the top,
A conical cylinder provided at the bottom of the cylinder and
A stabilizer provided in the center of the lower part of the conical cylinder portion, the bottom surfaces of the two conical shapes are combined to form an integrated shape, and the two tops of the conical body are the cylindrical portion and the conical cylinder. The connecting member has a top arranged in the vertical direction parallel to the axial direction of the portion, a cone having a circular bottom surface, and a connecting member extending in the vertical direction to connect the top and the flange. , The top of the conical body below the top and the center of the upper part of the collar are connected so that the cross-sectional area gradually increases from above to the circumference of the collar below the connecting member. With a stabilizer, which has a slope formed on it,
A primary air delivery means for delivering primary air in which powders, granules containing floss, and pellets are mixed in the cylindrical portion so as to swirl along the inner circumference of the cylindrical portion from a tangential direction.
Secondary air delivery means for delivering secondary air from a circumferential slit provided on the side wall of the lower portion of the conical cylinder portion toward the slope of the stabilizer .
A tertiary air blower Komu blown downward or et tertiary air of the secondary air delivery means,
A separation device including a discharge means for discharging particles and pellets while maintaining airtightness from below the tertiary air inlet .
The secondary air delivered toward the inclined surface of the front SL stabilizer, wherein the redirecting the updraft is rectified when the slope of the stabilizer, further by striking the said tops of said cylindrical portion and said conical tubular portion direction on the wall surface direction is configured to varying Erareru so, the secondary air, the powder has been dropped, which is configured to increase the floss to the cylindrical portion,
The tertiary air that has been blown up blows upward because the airtightness is maintained by the discharging means, raises the falling powder and floss, and causes the powder and floss together with the secondary air. It is configured to be raised to the cylindrical portion.
Powder separation apparatus, characterized in that.
前記１次空気送出手段と前記２次空気送出手段の間に設けられていること
を特徴とする請求項１に記載の粉体の分離装置。
The top is
The powder separation device according to claim 1, wherein the powder separation device is provided between the primary air delivery means and the secondary air delivery means.
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