JP2008275253A - Dryer - Google Patents
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- JP2008275253A JP2008275253A JP2007119445A JP2007119445A JP2008275253A JP 2008275253 A JP2008275253 A JP 2008275253A JP 2007119445 A JP2007119445 A JP 2007119445A JP 2007119445 A JP2007119445 A JP 2007119445A JP 2008275253 A JP2008275253 A JP 2008275253A
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Abstract
Description
本発明は、水平方向の一端側に原料投入口を備え他端側に製品排出口を備えたケーシング内に、水平方向に沿った回転軸と、当該回転軸に軸方向に沿って間隔を置いて取り付けられ且つ内部に熱媒の通路を備えた複数の加熱体が設けられ、前記加熱体の外周部に前記ケーシングの内壁との間で微小間隙を維持する攪拌用パドルが設けられた乾燥装置に関する。 The present invention provides a rotating shaft along the horizontal direction and a space along the axial direction in the casing having a raw material inlet at one end in the horizontal direction and a product outlet at the other end. A drying apparatus provided with a plurality of heating bodies provided with a passage for a heat medium therein, and provided with a stirring paddle for maintaining a minute gap between the outer periphery of the heating body and the inner wall of the casing About.
上記乾燥装置は、スチームや加熱液体等の熱媒の通路を内部に備えた例えば円盤状の加熱体が回転軸の回転に伴って低速回転し、原料投入口からケーシング内に投入された原料をケーシング内壁と微小間隙を維持したパドルによって攪拌しながら高温の加熱体表面（伝熱面）に接触させて加熱乾燥させ、乾燥した製品を製品排出口から送り出すものである（例えば、特許文献１参照）。 For example, a disk-shaped heating body provided with a passage for a heating medium such as steam or heating liquid rotates at a low speed as the rotating shaft rotates, and the raw material charged into the casing from the raw material charging port is supplied to the drying device. While stirring with a paddle that maintains a minute gap between the inner wall of the casing and contacting with the surface of the high-temperature heating body (heat transfer surface), the product is heated and dried, and the dried product is sent out from the product discharge port (for example, see Patent Document 1). ).
上記従来の乾燥装置では、攪拌用パドルを加熱体の外周部から所定高さの直線状の縦壁（図５参照）で構成していたので、その縦壁を回転方向に対して直交させると原料に強い押圧力が働いて、樹脂ペレット等の柔らかい原料が攪拌用パドルに融着するおそれがある一方、粉体原料については縦壁を乗り越えて背後に堆積するおそれがある。また上記縦壁を回転方向に対して斜めに配置した場合には、攪拌用パドルに当たった原料が縦壁の前面に沿って逃げるので押圧力が小さくなり、上記融着は抑制されるが、一部の原料は斜めになった縦壁の先端部付近に融着等し、また粉体原料については縦壁の先端部から縦壁の背後に回り込んで堆積する場合があり、さらなる改善が必要であった。 In the conventional drying apparatus, the stirring paddle is constituted by a straight vertical wall (see FIG. 5) having a predetermined height from the outer peripheral portion of the heating body. A strong pressing force acts on the raw material, so that a soft raw material such as resin pellets may be fused to the stirring paddle, while the powder raw material may get over the vertical wall and accumulate behind. In addition, when the vertical wall is disposed obliquely with respect to the rotation direction, the pressing force is reduced because the raw material hitting the stirring paddle escapes along the front surface of the vertical wall, and the fusion is suppressed, Some raw materials are fused near the tip of the slanted vertical wall, and powder raw materials may be deposited from the top of the vertical wall to the back of the vertical wall. It was necessary.
本発明は、上記実情に鑑みてなされたものであり、その目的は、融着や堆積等の不都合が確実に抑制できる乾燥装置を提供することにある。 This invention is made | formed in view of the said situation, The objective is to provide the drying apparatus which can suppress inconveniences, such as a fusion | melting and deposition, reliably.
上記目的を達成するための本発明に係る乾燥装置の第一特徴構成は、前記攪拌用パドルが、前記加熱体の外周部から見たときに、回転方向の前方側に突き出た中央部とその中央部から回転方向の後方側に後退する形状で連なる左右両側部を有する形状に形成されている点にある。 The first characteristic configuration of the drying apparatus according to the present invention for achieving the above object is that the stirring paddle projects from the outer peripheral portion of the heating body and a central portion protruding forward in the rotational direction, and It is in the point which is formed in the shape which has the right and left both sides connected in the shape which retreats from the central part to the back side of the direction of rotation.
上記第一特徴構成によれば、加熱体の回転に伴い攪拌用パドルに当たる原料は回転方向の前方側に突き出た中央部によって左右に押し分けられた後、中央部から回転方向の後方側に後退する形状で連なる左右両側部に沿って滑らかに後方へ送られる。すなわち、攪拌用パドルに当たる原料に対して強い押圧力が働かず、また原料が後方へ送られて攪拌用パドルに堆積し難い状態が実現されている。
従って、融着や堆積等の不都合が確実に抑制できる乾燥装置が提供される。
According to the first characteristic configuration, the raw material that hits the stirring paddle as the heating body rotates is pushed right and left by the central portion protruding forward in the rotational direction, and then retreats from the central portion to the rear side in the rotational direction. It is smoothly fed backward along the left and right sides that are connected in shape. That is, a strong pressing force is not applied to the raw material hitting the stirring paddle, and a state in which the raw material is sent backward and is not easily deposited on the stirring paddle is realized.
Therefore, a drying apparatus that can reliably suppress inconveniences such as fusion and deposition is provided.
同第二特徴構成は、上記第一特徴構成において、前記攪拌用パドルが、前記加熱体の外周部から見たときに、頂角を回転方向の前方側に向けた三角形に形成されている点にある。 The second characteristic configuration is that, in the first characteristic configuration, the stirring paddle is formed in a triangle whose apex angle is directed forward in the rotational direction when viewed from the outer peripheral portion of the heating body. It is in.
すなわち、頂角によって攪拌用パドルに当たる原料を左右に円滑に押し分けることができる。そして、その頂角の角度を変更することにより、原料の条件によって融着や堆積等が生じない適切な状態に調整することができる。
従って、融着や堆積等の不都合を抑制するための調整が容易にできる乾燥装置の好適な実施形態が提供される。
That is, the raw material which hits the stirring paddle can be smoothly pushed right and left by the apex angle. Then, by changing the apex angle, it is possible to adjust to an appropriate state in which no fusion or deposition occurs depending on the raw material conditions.
Therefore, a preferred embodiment of a drying apparatus that can be easily adjusted to suppress inconveniences such as fusion and deposition is provided.
同第三特徴構成は、上記第一又は第二特徴構成において、前記攪拌用パドルが、前記加熱体の外周部から見たときの形状に形成された底板と、この底板の回転方向前端部に立設された縦壁とによって構成されている点にある。 The third characteristic configuration is the above-described first or second characteristic configuration, wherein the stirring paddle is formed on a bottom plate formed in a shape when viewed from the outer peripheral portion of the heating body, and a rotational direction front end portion of the bottom plate. It is in the point comprised by the standing vertical wall.
すなわち、攪拌用パドルに当たる原料が縦壁の前面に沿って後方へ送られるとともに、特に樹脂ペレット等の柔らかい固形原料が縦壁の上方に跳ねた場合でも縦壁の背後の空間に入り込んで退避できるので、攪拌用パドルとケーシング内壁の間に挟まれて強い押圧力が働くことが回避され、融着の不都合が防止される。従って、特に融着の不都合が一層確実に抑制できる乾燥装置の好適な実施形態が提供される。 That is, the raw material hitting the paddle for stirring is fed backward along the front surface of the vertical wall, and even when a soft solid raw material such as resin pellets jumps above the vertical wall, it can enter and retreat into the space behind the vertical wall. Therefore, it is avoided that a strong pressing force is exerted between the stirring paddle and the inner wall of the casing, and inconvenience of fusion is prevented. Therefore, a preferred embodiment of a drying apparatus that can more reliably suppress the inconvenience of fusion is provided.
同第四特徴構成は、上記第一又は第二特徴構成において、前記攪拌用パドルが、前記加熱体の外周部から見たときの形状に形成された底板及び天板と、この底板及び天板の間に立設された縦壁とによって構成されている点にある。 The fourth characteristic configuration is the above first or second characteristic configuration, wherein the stirring paddle is formed in a shape when viewed from the outer peripheral portion of the heating body, and between the bottom plate and the top plate. It is in the point comprised by the vertical wall erected in.
すなわち、攪拌用パドルに当たる原料が縦壁の前面に沿って後方へ送られるとともに、特に粉体等の原料が縦壁の上方から縦壁の内部に入り込もうとしても、天板によって有効に防止される。従って、特に堆積の不都合が一層確実に抑制できる乾燥装置の好適な実施形態が提供される。 That is, the raw material that hits the stirring paddle is sent backward along the front surface of the vertical wall, and even if raw materials such as powder enter the inside of the vertical wall from above the vertical wall, the top plate is effectively prevented. The Therefore, a preferred embodiment of a drying apparatus that can more reliably suppress the inconvenience of deposition is provided.
本発明に係る乾燥装置の実施形態について、以下図面に基づいて説明する。
本発明の乾燥装置は、図１及び図２に示すように、水平方向の一端側に原料投入口１を備え他端側に製品排出口２を備えたケーシング３内に、水平方向に沿った回転軸４と、前記回転軸４に軸方向に沿って間隔を置いて取り付けられ且つ内部に熱媒通路５ａを備えた複数の加熱体５が設けられ、さらに加熱体５の外周部にケーシング３の内壁との間で微小間隙を維持する攪拌用パドル６が設けられている。尚、攪拌用パドル６の材質はステンレス製で表面がバフ研磨処理されたものを使用しているが、これに限るものではない。
An embodiment of a drying apparatus according to the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, the drying apparatus of the present invention is provided along a horizontal direction in a casing 3 having a raw material input port 1 on one end side in the horizontal direction and a product discharge port 2 on the other end side. A rotating shaft 4 and a plurality of heating bodies 5 attached to the rotating shaft 4 at intervals along the axial direction and provided with a heat medium passage 5 a are provided inside the casing 3. A stirring paddle 6 is provided to maintain a minute gap between the inner wall and the inner wall. The stirring paddle 6 is made of stainless steel and buffed on the surface, but is not limited thereto.
上記ケーシング３は断面Ｕ字形に形成され、上方開口部は上カバー１０で覆われている。そして、上カバー１０の一端側に前記原料投入口１が設けられるとともに、原料投入口１から離れた位置の上カバー１０に原料から蒸発したガス（例えば水蒸気等）を排出するための蒸発ガス出口１１が設けられている。尚、ケーシング３の内側には隣接する加熱体５の間の空間に対して回転軸４の近くまで突き出す鍬状部材１２を取り付け、これによって隣接する加熱体５の間の空間に位置する原料が加熱体５の回転に連れ周り（共回り）するのを防止している。 The casing 3 is formed in a U-shaped cross section, and the upper opening is covered with an upper cover 10. The raw material inlet 1 is provided at one end of the upper cover 10, and an evaporative gas outlet for discharging gas (for example, water vapor) evaporated from the raw material to the upper cover 10 at a position away from the raw material inlet 1. 11 is provided. In addition, on the inner side of the casing 3, a hook-like member 12 protruding to the vicinity of the rotating shaft 4 with respect to the space between the adjacent heating bodies 5 is attached, whereby the raw material located in the space between the adjacent heating bodies 5 is attached. This prevents the heating body 5 from rotating (co-rotating) with rotation.
前記回転軸４は外管１３と内管１４の二重管に形成され、その外管１３と内管１４の間の環状空間が、管の一端側（図１の右側）から供給される蒸気等の熱媒流体を前記加熱体５の熱媒通路５ａに送り込むための送り通路に形成されている。具体的には、加熱体５の位置に対応して外管１３に複数の開口１５が形成され、この開口１５を通して外管１３より外側の熱媒通路５ａに熱媒流体が流れ込む構造となっている。 The rotating shaft 4 is formed as a double pipe of an outer pipe 13 and an inner pipe 14, and an annular space between the outer pipe 13 and the inner pipe 14 is steam supplied from one end side (right side in FIG. 1) of the pipe. It is formed in a feed passage for feeding a heat medium fluid such as a heat medium passage 5a of the heating body 5 to the heat medium fluid. Specifically, a plurality of openings 15 are formed in the outer tube 13 corresponding to the position of the heating body 5, and the heat medium fluid flows into the heat medium passage 5 a outside the outer tube 13 through the openings 15. Yes.
一方、内管１４の内側空間が、加熱体５の熱媒通路５ａから回収される冷却流体を外部に戻すための戻り通路に形成され、冷却流体が管の一端側に戻されて排出されるように構成されている。熱媒流体が蒸気（スチーム）の場合について具体的に説明すると、蒸気が加熱体５の熱媒通路５ａに流入した後、原料の乾燥に使われて冷却し凝縮した凝縮水を内管１４の内側空間に戻す凝縮水戻し管１６が設けられている。凝縮水戻し管１６は、回転軸４の回転に伴い、熱媒通路５ａ側に位置する弧状の掬い管部１７の先端開口によって加熱体５の外周に集まる凝縮水を掬い取り、これを内管１４の内側空間の中心位置まで送るように、外管１３と内管１４を貫通する管形状に形成されている。尚、熱媒流体が温水や熱媒油等の液体の場合には、熱媒液体が熱媒通路５ａを満たしているので、熱媒液体を戻り流路に戻すために、図２に示すような掬い管部１７の代わりに、熱媒通路５ａから内管１４の内側空間に貫通する直線管を用いることができる。 On the other hand, the inner space of the inner tube 14 is formed as a return passage for returning the cooling fluid recovered from the heat medium passage 5a of the heating body 5 to the outside, and the cooling fluid is returned to one end side of the tube and discharged. It is configured as follows. The case where the heat transfer fluid is steam (steam) will be specifically described. After the steam flows into the heat transfer passage 5a of the heating element 5, the condensed water that is cooled and condensed by drying the raw material is stored in the inner pipe 14. A condensed water return pipe 16 that returns to the inner space is provided. The condensed water return pipe 16 scoops up the condensed water gathered on the outer periphery of the heating body 5 by the opening of the arcuate scooping pipe portion 17 located on the heat medium passage 5a side as the rotating shaft 4 rotates, 14 is formed in a tube shape penetrating the outer tube 13 and the inner tube 14 so as to be sent to the center position of the inner space 14. When the heat medium fluid is a liquid such as warm water or heat medium oil, the heat medium liquid fills the heat medium passage 5a. Therefore, in order to return the heat medium liquid to the return channel, as shown in FIG. Instead of the long scooping pipe portion 17, a straight pipe penetrating from the heat medium passage 5 a to the inner space of the inner pipe 14 can be used.
次に、前記熱媒通路５ａに熱媒流体を流すための通路構造に関する別実施形態を図６及び図７に示す。この形態でも前記回転軸４が外管１３と内管１４の二重管に形成され、その管の一端側（図６の右側）から外管１３と内管１４の間の環状空間に流入した熱媒流体が、加熱体５の位置に対応して外管１３に形成された複数の開口１５を通過して熱媒通路５ａに流れ込む。但し、熱媒通路５ａに流れ込んだ熱媒流体は開口１５を通して外管１３と内管１４の間の環状空間に戻りつつ、当該環状空間を管の他端側（図６の左側）に向けて送られて排出される点が図１に示す構造と異なっている。 Next, another embodiment relating to a passage structure for flowing a heat transfer fluid through the heat transfer passage 5a is shown in FIGS. Also in this form, the rotating shaft 4 is formed as a double tube of the outer tube 13 and the inner tube 14, and flows into the annular space between the outer tube 13 and the inner tube 14 from one end side (right side in FIG. 6) of the tube. The heat medium fluid flows through the plurality of openings 15 formed in the outer tube 13 corresponding to the position of the heating body 5 and flows into the heat medium passage 5a. However, the heat medium fluid flowing into the heat medium passage 5a returns to the annular space between the outer tube 13 and the inner tube 14 through the opening 15, and the annular space is directed toward the other end side (the left side in FIG. 6) of the tube. It differs from the structure shown in FIG. 1 in that it is sent and discharged.
前記攪拌用パドル６はケーシング３の内壁のうち底壁と横壁との間で微小間隙を形成し、回転軸４の軸方向に沿って見た状態で円盤状の加熱体５の全周に９０度の間隔で４個配置されている。尚、攪拌用パドル６同士の間隔が略一定になるように、加熱体５の径が大きくなればパドル個数を増やし、加熱体５の径が小さくなればパドル個数を減らすように、適宜変更することが好ましい。前記攪拌用パドル６は、図３と図４に示すように、加熱体５の外周部から見たときに、回転方向の前方側に突き出た中央部６ａとその中央部６ａから回転方向の後方側に後退する形状で連なる左右両側部６ｂを有する形状に形成されている。具体的には、攪拌用パドル６が、加熱体５の外周部から見たときに、頂角を回転方向の前方側に向けた三角形に形成されている。ただし、頂角の先端は融着を抑制するために丸めた形状に形成している。 The stirring paddle 6 forms a minute gap between the bottom wall and the lateral wall of the inner wall of the casing 3, and is 90 around the entire circumference of the disk-shaped heating body 5 when viewed along the axial direction of the rotating shaft 4. Four are arranged at intervals of degrees. It should be noted that the spacing between the stirring paddles 6 is substantially constant so that the number of paddles is increased when the diameter of the heating element 5 is increased, and the number of paddles is decreased when the diameter of the heating element 5 is decreased. It is preferable. As shown in FIGS. 3 and 4, the agitation paddle 6 has a central portion 6a that protrudes forward in the rotational direction when viewed from the outer peripheral portion of the heating body 5, and a rear portion in the rotational direction from the central portion 6a. It is formed in a shape having left and right side portions 6b that are continuous in a shape that recedes to the side. Specifically, the stirring paddle 6 is formed in a triangular shape with the apex angle facing the front side in the rotational direction when viewed from the outer peripheral portion of the heating element 5. However, the tip of the apex angle is formed in a rounded shape to suppress fusion.
図３の攪拌用パドル６は、加熱体５の外周部から見たときの形状に形成された底板１８と、この底板１８の回転方向前端部に立設された縦壁１９とによって構成され、（イ）は頂角の大きい三角形パドル、（ロ）は頂角の小さい三角形パドルの例である。図４の攪拌用パドル６は、加熱体５の外周部から見たときの形状に形成された底板２０及び天板２１と、この底板２０及び天板２１の間に立設された縦壁２２とによって箱状に構成された三角形パドルの例である。なお、図４の箱状の攪拌用パドル６の高さを図３の攪拌用パドル６よりも低くしているので、ケーシング３の内壁との間隙は図３の攪拌用パドル６の方が図４の箱状の攪拌用パドル６の場合よりも狭くなる。 The stirring paddle 6 shown in FIG. 3 includes a bottom plate 18 formed in a shape when viewed from the outer peripheral portion of the heating body 5 and a vertical wall 19 erected at the front end portion in the rotational direction of the bottom plate 18. (A) is an example of a triangular paddle with a large apex angle, and (B) is an example of a triangular paddle with a small apex angle. The stirring paddle 6 shown in FIG. 4 includes a bottom plate 20 and a top plate 21 formed in a shape when viewed from the outer periphery of the heating body 5, and a vertical wall 22 erected between the bottom plate 20 and the top plate 21. This is an example of a triangular paddle configured in a box shape. Since the height of the box-shaped stirring paddle 6 shown in FIG. 4 is lower than that of the stirring paddle 6 shown in FIG. 3, the gap between the inner wall of the casing 3 and the stirring paddle 6 shown in FIG. It becomes narrower than the case of the four box-shaped stirring paddles 6.
因みに本実施形態では、９個の加熱体５（図１参照）を設けて、原料投入口１に近い側の加熱体５に２個の送りパドル７を取り付け、次の３個の加熱体５に図３（イ）に示す頂角の大きい三角形の攪拌用パドル６を取り付け、次の３個の加熱体５に図３（ロ）に示す頂角の小さい三角形の攪拌用パドル６を取り付け、最後の加熱体５に図５に示す平行パドル８を取り付けている。 Incidentally, in the present embodiment, nine heating bodies 5 (see FIG. 1) are provided, two feed paddles 7 are attached to the heating body 5 on the side close to the raw material inlet 1, and the following three heating bodies 5 are attached. A triangular paddle 6 having a large apex angle shown in FIG. 3 (a) is attached, and a triangular stirring paddle 6 having a small apex angle shown in FIG. 3 (b) is attached to the next three heating elements 5, A parallel paddle 8 shown in FIG. 5 is attached to the last heating body 5.
なお、原料の種類、材質、硬さ等によって、上記図３の攪拌用パドル６と図４の攪拌用パドル６を適宜変更して使用することが望ましい。具体的には、図３の攪拌用パドル６は、樹脂ペレットや大きい粒径の原料の攪拌に適し、図４の攪拌用パドル６は、粉体原料の攪拌に適している。 It should be noted that the stirring paddle 6 shown in FIG. 3 and the stirring paddle 6 shown in FIG. 4 are preferably used by appropriately changing depending on the type, material, hardness, and the like of the raw material. Specifically, the stirring paddle 6 in FIG. 3 is suitable for stirring resin pellets and raw materials having a large particle diameter, and the stirring paddle 6 in FIG. 4 is suitable for stirring powder raw materials.
ここで、本乾燥装置によって好適に乾燥処理できる原料を例示すると、付着し易い粉粒体（粉体、ペレット等の粒体）、各種樹脂類（ポリエステル系、ポリアミド系、酢酸ビニル等）、食品（コーンスターチ等）、食品添加物、顔料、その他付着性の強い又は流動性の悪い有機系材料などが挙げられる。 Here, examples of raw materials that can be suitably dried by the present drying apparatus include powder particles (particles such as powder and pellets) that easily adhere, various resins (polyester, polyamide, vinyl acetate, etc.), foods (Corn starch, etc.), food additives, pigments, and other organic materials with strong adhesion or poor fluidity.
次に、本乾燥装置の運転条件の一例について説明する。尚、ここでは、原料を連続的に供給しながら、乾燥した製品を連続的に排出する連続運転の例を示すが、所定量の原料を一括投入し、乾燥処理後、一括して取り出すバッチ運転でもよい。
〔運転条件１〕（原料：ポリアミド系粉体）
回転速度（ディスク外周端部）：周速0.6m/s
機内温度：250℃
熱媒温度（入口温度、出口温度）：熱媒油、入口260℃->出口240℃
処理能力：400kg/h（原料連続供給、連続排出運転）
処理時間（滞留時間）：5hr
原料湿分：5%
製品湿分：0.05%
〔運転条件２〕（原料：ポリエステル系ペレット）
回転速度（ディスク外周端部）：周速0.4m/s
機内温度：115℃
熱媒温度（入口温度、出口温度）：スチーム120℃(入口も出口も120℃)
処理能力：200kg/h（原料連続供給、連続排出運転）
処理時間（滞留時間）：30min
原料湿分：0.4%
製品湿分：0.1%
Next, an example of the operating conditions of this drying apparatus will be described. Here, an example of a continuous operation in which the dried product is continuously discharged while continuously supplying the raw material is shown, but a batch operation in which a predetermined amount of the raw material is charged in a lump, and after the drying process is taken out in a lump But you can.
[Operating condition 1] (Raw material: Polyamide powder)
Rotational speed (disk outer edge): peripheral speed 0.6m / s
In-machine temperature: 250 ℃
Heat medium temperature (inlet temperature, outlet temperature): Heat medium oil, inlet 260 ℃-> outlet 240 ℃
Processing capacity: 400kg / h (raw material continuous supply, continuous discharge operation)
Processing time (residence time): 5hr
Raw material moisture: 5%
Product moisture: 0.05%
[Operating condition 2] (Raw material: Polyester pellets)
Rotational speed (disk outer edge): peripheral speed 0.4m / s
In-machine temperature: 115 ° C
Heat medium temperature (inlet temperature, outlet temperature): Steam 120 ° C (Inlet and outlet 120 ° C)
Processing capacity: 200kg / h (raw material continuous supply, continuous discharge operation)
Processing time (residence time): 30min
Raw material moisture: 0.4%
Product moisture: 0.1%
本発明に係る乾燥装置は、軟化しやすさ、流動性、粒度（粒体か粉体か）など種々の特性の乾燥対象物に対して、装置内での融着、堆積等の発生を防止しながら乾燥させる場合に好適に使用することができる。 The drying apparatus according to the present invention prevents the occurrence of fusion, deposition, etc. in the apparatus for drying objects having various characteristics such as ease of softening, fluidity, and particle size (granular or powder). However, it can be suitably used when drying.
１ 原料投入口
２ 製品排出口
３ ケーシング
４ 回転軸
５ 加熱体
５ａ 熱媒通路
６ 攪拌用パドル
６ａ 中央部
６ｂ 左右両側部
７ 送りパドル
８ 平行パドル
１０ 上カバー
１１ 蒸発ガス出口
１２ 鍬状部材
１３ 外管
１４ 内管
１５ 開口
１６ 凝縮水戻し管
１７ 掬い管部
１８ 底板
１９ 縦壁
２０ 底板
２１ 天板
２２ 縦壁
DESCRIPTION OF SYMBOLS 1 Raw material inlet 2 Product outlet 3 Casing 4 Rotating shaft 5 Heating body 5a Heat medium passage 6 Stirring paddle 6a Center part 6b Left and right both sides 7 Feeding paddle 8 Parallel paddle 10 Upper cover 11 Evaporative gas outlet 12 Spear-shaped member 13 Outside Pipe 14 Inner pipe 15 Opening 16 Condensate return pipe 17 Scooping pipe section 18 Bottom plate 19 Vertical wall 20 Bottom plate 21 Top plate 22 Vertical wall
Claims (4)
前記加熱体の外周部に前記ケーシングの内壁との間で微小間隙を維持する攪拌用パドルが設けられた乾燥装置であって、
前記攪拌用パドルが、前記加熱体の外周部から見たときに、回転方向の前方側に突き出た中央部とその中央部から回転方向の後方側に後退する形状で連なる左右両側部を有する形状に形成されている乾燥装置。 In a casing having a raw material input port on one end side in the horizontal direction and a product discharge port on the other end side, the rotary shaft along the horizontal direction is attached to the rotary shaft at intervals along the axial direction, and A plurality of heating elements provided with a heat medium passage inside are provided,
A drying device provided with a stirring paddle for maintaining a minute gap between the outer periphery of the heating body and the inner wall of the casing,
The agitation paddle has a central part protruding to the front side in the rotation direction when viewed from the outer peripheral part of the heating element and left and right side parts connected in a shape retreating from the central part to the rear side in the rotation direction Formed in the drying device.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2007119445A JP5030277B2 (en) | 2007-04-27 | 2007-04-27 | Drying equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2013044451A (en) * | 2011-08-23 | 2013-03-04 | Ke Os Machinery Co Ltd | Drying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013044451A (en) * | 2011-08-23 | 2013-03-04 | Ke Os Machinery Co Ltd | Drying device |
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