JP5401392B2 - Fine powder removal device - Google Patents

Fine powder removal device Download PDF

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JP5401392B2
JP5401392B2 JP2010090124A JP2010090124A JP5401392B2 JP 5401392 B2 JP5401392 B2 JP 5401392B2 JP 2010090124 A JP2010090124 A JP 2010090124A JP 2010090124 A JP2010090124 A JP 2010090124A JP 5401392 B2 JP5401392 B2 JP 5401392B2
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filter
fine powder
casing
air
tangential direction
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JP2011218292A (en
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和弘 馬場
秀樹 藤岡
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Kawata Manufacturing Co Ltd
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Kawata Manufacturing Co Ltd
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Description

本発明は粉粒体の微粉除去装置に関する。   The present invention relates to a fine powder removing apparatus for a granular material.

従来の微粉除去装置の一例を図６を参照して説明すると、センターパイプ１１１とケーシング１１２とが略同心に配置され、その間にフィルタパイプ１１３が挿入された粉粒体分離部１０１は、３層構造の円筒状になっており、上部に設置したキャップ１１４の円筒部に接線方向の粉粒体吸込口１１５を設け、またケーシング１１２の下部に接線方向の空気吸引口１１７を設け、シャッター１２２を下部に設けた貯留タンク１２１の上部に設置する。空気吸引口１１７に接続した吸引ブロアを駆動することにより、粉粒体吸込口１１５に接続した管の末端から空気と一緒に粉粒体を吸い込む。粉粒体吸込口１１５より接線方向に流入した粉粒体を含む混合気が、粉粒体分離部１０１の上部よりセンターパイプ１１１とフィルタパイプ１１３間に入り下方向へ向かう。この間に粉粒体とそれに随伴する微粉の分離を行う。分離した微粉は空気と一緒にフィルタ穴を通り抜け、フィルタパイプ１１３とケーシング１１２間を下方向へ向かい、空気吸引口１１７より排出する。微粉が除去された粉粒体はフィルタ穴を通り抜けることなく、フィルタパイプ１１３の下端開口より貯留タンク１２１に排出する。   An example of a conventional fine powder removing device will be described with reference to FIG. 6. A powder and particle separation unit 101 in which a center pipe 111 and a casing 112 are arranged substantially concentrically and a filter pipe 113 is inserted between them is a three-layer structure. The cylindrical portion of the cap 114 installed at the upper portion is provided with a tangential powder suction port 115, the lower portion of the casing 112 is provided with a tangential air suction port 117, and the shutter 122 is provided at the lower portion. It installs in the upper part of the storage tank 121 provided in. By driving the suction blower connected to the air suction port 117, the powder body is sucked together with air from the end of the tube connected to the powder body suction port 115. The air-fuel mixture including the granular material flowing in the tangential direction from the granular material suction port 115 enters between the center pipe 111 and the filter pipe 113 from the upper part of the granular material separating unit 101 and moves downward. During this time, the granular material and the fine powder accompanying it are separated. The separated fine powder passes through the filter hole together with air, travels downward between the filter pipe 113 and the casing 112, and is discharged from the air suction port 117. The granular material from which the fine powder has been removed is discharged from the lower end opening of the filter pipe 113 to the storage tank 121 without passing through the filter hole.

特開２００９−２７３９６９号公報JP 2009-273969 A

上記従来の微粉除去装置では、粉粒体と気体の混合物を装置上部より投入するため、粉粒体の装置内滞留時間に限界があり、粉粒体によっては装置内滞留時間不足により微粉除去効率が著しく低いものになるという問題がある。   In the above conventional fine powder removing device, since the mixture of powder and gas is introduced from the top of the device, there is a limit in the residence time of the powder in the device, and depending on the powder, the fine powder removal efficiency due to insufficient residence time in the device There is a problem that becomes extremely low.

本発明は上記問題に鑑みてなされたもので、その目的は、粉粒体の装置内滞留時間を任意に設定でき、粉粒体によって異なる微粉除去に必要な装置内滞留時間を確保でき、微粉を常に高効率で除去することができる微粉除去装置を提供することにある。   The present invention has been made in view of the above problems, and its purpose is to arbitrarily set the residence time of the granular material in the apparatus, and to ensure the residence time in the apparatus necessary for removing fine powder, which varies depending on the granular material. It is an object of the present invention to provide a fine powder removing device that can always remove the dust with high efficiency.

上記目的を達成するため本発明は、筒状のケーシングと、前記ケーシング内に配置する筒状のフィルタと、粉粒体の輸送気体と前記粉粒体を前記フィルタ内に流入させる流入口と、前記フィルタを通過した前記輸送気体と微粉を前記ケーシングと前記フィルタとの間より接線方向に流出させる流出口を備えた微粉除去装置において、前記フィルタは前記ケーシングの中心線を軸とする逆円錐面内にあり、前記流入口は前記フィルタの下部より前記粉粒体と前記輸送気体を接線方向に流入させることを特徴とするもので、この構成により、流入口より接線方向に流入した輸送気体により、フィルタ内には逆円錐のフィルタ内面に沿って旋回しながら下部より上部に向かう気流を生じ、その気流がある限り粉粒体はフィルタ内で滞留する。   In order to achieve the above object, the present invention provides a cylindrical casing, a cylindrical filter disposed in the casing, a transport gas for granular material, and an inlet for allowing the granular material to flow into the filter, In the fine powder removing apparatus having an outlet for allowing the transport gas and fine powder that have passed through the filter to flow out in a tangential direction from between the casing and the filter, the filter has an inverted conical surface about the center line of the casing. The inflow port is characterized in that the granular material and the transport gas flow in a tangential direction from the lower part of the filter. With this configuration, the transport gas flows in a tangential direction from the inflow port. In the filter, an air flow is generated from the lower part to the upper part while turning along the inner surface of the inverted conical filter. As long as the air flow is present, the particles stay in the filter.

本発明によれば、粉粒体の装置内滞留時間を任意に設定でき、粉粒体によって異なる微粉除去に必要な装置内滞留時間を確保でき、微粉を常に高効率で除去することができる微粉除去装置を提供可能になる。   According to the present invention, it is possible to arbitrarily set the residence time of the granular material in the apparatus, to ensure the residence time required for the removal of the fine powder, which varies depending on the granular material, and to always remove the fine powder with high efficiency. A removal device can be provided.

本発明において、フィルタは多数のフィルタ穴を有するフィルタ部を上部に設けるという構成を付加した場合、輸送気体をフィルタの下部から外側に逃がすことなく、フィルタ内に強い気流を発生させることができ、それに伴い遠心力が大きく作用するフィルタの上部で微粉の分離を効率よく行うことができる。この場合、フィルタ部の下部外周囲に筒状のカバーを設置するという構成を付加した場合、フィルタ部の下部より上部で輸送気体をより多く外側に逃がすので、フィルタ内にさらに強い気流を発生させることができ、それに伴い遠心力がより大きく作用するフィルタ部の上部で粉粒体と微粉の分離をより効率よく行うことができる。   In the present invention, when the filter is provided with a configuration in which a filter part having a large number of filter holes is provided at the upper part, a strong air flow can be generated in the filter without escaping the transport gas from the lower part of the filter to the outside. Accordingly, fine powder can be efficiently separated at the upper part of the filter on which centrifugal force acts greatly. In this case, when a configuration in which a cylindrical cover is installed around the outer periphery of the lower part of the filter unit, more transport gas escapes outward from the upper part of the lower part of the filter unit, so that a stronger air flow is generated in the filter. Accordingly, the granular material and the fine powder can be more efficiently separated at the upper portion of the filter portion where the centrifugal force acts more greatly.

本発明において、流出口はフィルタを通過した輸送気体と微粉をケーシングの下部とフィルタの下部との間より接線方向に流出させるという構成を付加した場合、ケーシングとフィルタの間には旋回しながら下方向に向かう気流を生じ、フィルタを通過した輸送気体と微粉が下部の流出口より流出する。   In the present invention, when the configuration is such that the transport gas and fine powder that have passed through the filter flow out in a tangential direction from between the lower part of the casing and the lower part of the filter, the outlet exits while rotating between the casing and the filter. An airflow directed in the direction is generated, and the transport gas and fine powder that have passed through the filter flow out from the lower outlet.

本発明において、流出口はフィルタを通過した輸送気体と微粉をケーシングの上部とフィルタの上部との間より接線方向に流出させるという構成を付加した場合、ケーシングとフィルタの間には旋回しながら上方向に向かう気流を生じ、フィルタを通過した輸送気体と微粉が上部の流出口より流出する。   In the present invention, when the configuration is such that the transport gas and fine powder that have passed through the filter flow out in a tangential direction from between the upper part of the casing and the upper part of the filter, the outlet is swirled between the casing and the filter. An airflow directed in the direction is generated, and the transport gas and fine powder that have passed through the filter flow out from the upper outlet.

本発明にかかる微粉除去装置の実施例１を示す側面説明図である。It is side explanatory drawing which shows Example 1 of the fine powder removal apparatus concerning this invention. 本発明にかかる微粉除去装置の実施例１を示す上面説明図である。It is upper surface explanatory drawing which shows Example 1 of the fine powder removal apparatus concerning this invention. 本発明にかかる微粉除去装置の実施例１の使用状態を示す図である。It is a figure which shows the use condition of Example 1 of the fine powder removal apparatus concerning this invention. 本発明にかかる微粉除去装置の実施例２を示す側面説明図である。It is side explanatory drawing which shows Example 2 of the fine powder removal apparatus concerning this invention. 本発明にかかる微粉除去装置の実施例３を示す側面説明図である。It is side explanatory drawing which shows Example 3 of the fine powder removal apparatus concerning this invention. 従来の微粉除去装置の一例を示す側面説明図である。It is side explanatory drawing which shows an example of the conventional fine powder removal apparatus.

以下、本発明にかかる微粉除去装置の実施形態を図面と共に実施例に基づいて説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a fine powder removing apparatus according to the present invention will be described based on examples together with the drawings.

図１は本発明にかかる微粉除去装置の実施例１を示す側面説明図、図２は本発明にかかる微粉除去装置の実施例１を示す上面説明図である。図１、図２に示すように実施例１の微粉除去装置は、上部開口を上蓋１で閉じ、下部開口を底板２で閉じた円筒状のケーシング３内に筒状のフィルタ４が配置され、フィルタ４はケーシング３の軸方向（図１の紙面上下方向）の中心線を軸とする逆円錐面内にあり、逆円錐台形に形成されており、上部開口は上蓋１で閉じられ、下端部は底板２を貫通してケーシング３の下側に引き出し、下部開口が粉粒体５の排出口６になっている。排出口６には支軸７ａを支点に回動（開閉）可能なダンパー７が設けられる。   FIG. 1 is an explanatory side view showing Example 1 of a fine powder removing apparatus according to the present invention, and FIG. 2 is an explanatory top view showing Example 1 of the fine powder removing apparatus according to the present invention. As shown in FIG. 1 and FIG. 2, in the fine powder removing apparatus of Example 1, a cylindrical filter 4 is disposed in a cylindrical casing 3 in which an upper opening is closed by an upper lid 1 and a lower opening is closed by a bottom plate 2. The filter 4 is in an inverted conical surface with the center line of the casing 3 in the axial direction (the vertical direction in FIG. 1) as an axis, and is formed in an inverted frustoconical shape. The upper opening is closed by the upper lid 1 and the lower end portion. Passes through the bottom plate 2 and is drawn out to the lower side of the casing 3, and the lower opening serves as the discharge port 6 of the granular material 5. The discharge port 6 is provided with a damper 7 that can be rotated (opened / closed) about a support shaft 7a.

また、ケーシング３の円筒部とフィルタ４はその軸線と直角な一平面で上下二つに分けられており、ケーシング３の上円筒部３ａ内にあるフィルタ４の上部がパンチングメタルや金属網から構成され、多数のフィルタ穴８を有するフィルタ部４ａとし、ケーシング３の上円筒部３ａより短い下円筒部３ｂ内にあるフィルタ４の下部が通気性のない金属板から構成され、非フィルタ部４ｂとする。   The cylindrical portion of the casing 3 and the filter 4 are divided into two upper and lower portions on one plane perpendicular to the axis thereof, and the upper portion of the filter 4 in the upper cylindrical portion 3a of the casing 3 is made of punching metal or a metal net. The filter part 4a having a large number of filter holes 8 is formed, and the lower part of the filter 4 in the lower cylindrical part 3b shorter than the upper cylindrical part 3a of the casing 3 is made of a non-breathable metal plate, and the non-filter part 4b To do.

また、非フィルタ部４ｂには、下円筒部３ｂの外側よりその下円筒部３ｂを貫通して非フィルタ部４ｂ内に、粉粒体５の輸送気体９とその粉粒体５を接線方向に流入させる短い配管状の流入口１０が設けられ、下円筒部３ｂには、フィルタ部４ａのフィルタ穴８を通過した輸送気体９と微粉１１を下円筒部３ｂと非フィルタ部４ｂ間の環状空間より、しかも、底板２に接近した高さ位置より下円筒部３ｂの外側に流出させる接線方向の短い配管状の流出口１２が設けられる。   In addition, the non-filter part 4b penetrates the lower cylindrical part 3b from the outside of the lower cylindrical part 3b into the non-filter part 4b, and transports the transport gas 9 of the granular substance 5 and the granular substance 5 in the tangential direction. A short pipe-like inlet 10 is provided for inflow, and an annular space between the lower cylindrical portion 3b and the non-filter portion 4b is provided in the lower cylindrical portion 3b with the transport gas 9 and fine powder 11 that have passed through the filter hole 8 of the filter portion 4a. In addition, a short tangential pipe-like outlet 12 is provided to flow out of the lower cylindrical portion 3b from a height position approaching the bottom plate 2.

図３は本発明にかかる微粉除去装置の実施例１の使用状態を示す図である。図３に示すように実施例１の微粉除去装置は、樹脂成形の際、成形不良となる、樹脂材料（樹脂ペレット）に含まれる、又は成形機までの吸引式の管路輸送工程等で発生する微粉及び異物を除去するため、成形機１３の樹脂材料供給ポッパ１４の上部に設置され、排出口６がダンパー７を介して樹脂材料供給ポッパ１４に開口される。流入口１０は粉粒体である樹脂材料５の貯槽１５に配管接続され、流出口１２は気体に運動エネルギーを与えたり圧力を高めたりする流体機器であるブロア１６の吸込口に配管接続される。流出口１２とブロア１６の間には集塵装置１７がある。   FIG. 3 is a diagram illustrating a usage state of the first embodiment of the fine powder removing apparatus according to the present invention. As shown in FIG. 3, the fine powder removing apparatus of Example 1 is generated during a resin molding, such as a molding failure, included in a resin material (resin pellet), or in a suction-type pipeline transportation process to a molding machine. In order to remove the fine powder and foreign matters to be removed, it is installed on the upper part of the resin material supply popper 14 of the molding machine 13, and the discharge port 6 is opened to the resin material supply popper 14 via the damper 7. The inflow port 10 is connected by piping to a storage tank 15 of the resin material 5 that is a granular material, and the outflow port 12 is connected by piping to the suction port of a blower 16 that is a fluid device that gives kinetic energy to a gas or increases pressure. . There is a dust collector 17 between the outlet 12 and the blower 16.

実施例１の微粉除去装置の動作について説明する。   Operation | movement of the fine powder removal apparatus of Example 1 is demonstrated.

貯槽１５に樹脂材料５が入っていない場合、ブロア１６を駆動すると、下円筒部３ｂと非フィルタ部４ｂ間の環状空間にある空気が流出口１２より接線方向に流出し、下円筒部３ｂと非フィルタ部４ｂ間の環状空間には上円筒部３ａとフィルタ部４ａ間の環状空間にある空気が流入し、上円筒部３ａとフィルタ部４ａ間の環状空間にはフィルタ部４ａの内部にある空気がフィルタ穴８より流入し、フィルタ部４ａの内部には非フィルタ部４ｂの内部にある空気が流入し、非フィルタ部４ｂの内部にはダンパー７が自由開放して開いた排出口６より樹脂材料供給ポッパ１４の内部にある空気が流入し、同時に流入口１０より貯槽１５の内外にある空気が流入するが、排出口６に空気が流入し初めた時点でその気流によりダンパー７が閉じ、排出口６は閉じられるため、非フィルタ部４ｂの内部には貯槽１５の内外にある空気が流入口１０より接線方向に流入する。   When the resin material 5 is not contained in the storage tank 15, when the blower 16 is driven, the air in the annular space between the lower cylindrical portion 3b and the non-filter portion 4b flows out from the outlet 12 in the tangential direction, and the lower cylindrical portion 3b Air in the annular space between the upper cylindrical portion 3a and the filter portion 4a flows into the annular space between the non-filter portions 4b, and the annular space between the upper cylindrical portion 3a and the filter portion 4a is inside the filter portion 4a. Air flows in from the filter hole 8, air in the non-filter portion 4b flows into the filter portion 4a, and a damper 7 is freely opened in the non-filter portion 4b from the discharge port 6 opened. The air inside the resin material supply popper 14 flows in, and at the same time, the air inside and outside the storage tank 15 flows from the inlet 10, but when the air begins to flow into the outlet 6, the damper 7 is closed by the airflow. , Discharge Because 6 is closed, the inside of the non-filter portion 4b is air in and out of the storage tank 15 flows from the inlet port 10 in the tangential direction.

流入口１０より接線方向に流入した空気により、フィルタ４の内部では逆円錐のフィルタ４内面に沿って旋回しながら下部より上部に向かう上向きの螺旋気流１８（図１の実線で示す螺旋）を生じ、ケーシング３とフィルタ４間の環状空間では旋回しながら下方向に向かう下向きの螺旋気流１９（図１の破線で示す螺旋）を生じ、これら螺旋気流１８，１９はブロア１６の駆動を停止するまで維持される。   The air flowing in from the inlet 10 in the tangential direction generates an upward spiral air flow 18 (spiral indicated by a solid line in FIG. 1) from the bottom to the top while swirling along the inner surface of the inverted conical filter 4 inside the filter 4. In the annular space between the casing 3 and the filter 4, a downward spiral airflow 19 (spiral indicated by a broken line in FIG. 1) is generated while turning, until the spiral airflows 18 and 19 stop driving the blower 16. Maintained.

そこで、貯槽１５に樹脂材料５が入っている場合、吸引式の管路輸送（空気輸送）が行われ、貯槽１５の内外にある空気（輸送気体）９と一緒に樹脂材料５が流入口１０より接線方向に流入し、フィルタ４の内部では上向きの螺旋気流１８を生じているので、流入口１０より空気９と一緒に接線方向に流入した樹脂材料５は上向きの螺旋気流１８により、フィルタ４の内部で逆円錐のフィルタ４内面に沿って旋回しながら下部より上部に向かい、螺旋気流１８がある限り、つまりブロア１６の駆動を停止するまで樹脂材料５はフィルタ４内で滞留する。   Therefore, when the resin material 5 is contained in the storage tank 15, suction-type pipe transportation (pneumatic transportation) is performed, and the resin material 5 is brought into the inlet 10 together with the air (transport gas) 9 inside and outside the storage tank 15. Since the spiral air flow 18 that flows upward in the tangential direction is generated inside the filter 4, the resin material 5 that flows in the tangential direction together with the air 9 from the inlet 10 flows into the filter 4 due to the upward spiral air flow 18. The resin material 5 stays in the filter 4 as long as there is a spiral airflow 18, that is, until the drive of the blower 16 is stopped.

この時、遠心力による樹脂材料５とそれに含まれる、又は成形機１３までの吸引式の管路輸送工程等で発生する微粉１１及び異物の分離が行われる。フィルタ穴８より小さい微粉１１及び異物はフィルタ部４ａの内部より上円筒部３ａとフィルタ部４ａ間の環状空間に流入する空気９と一緒にフィルタ穴８を通り抜け、ケーシング３とフィルタ４間の環状空間に生じている下向きの螺旋気流１９と合流し、旋回しながら下方に向かい、空気９と一緒に流出口１２より接線方向に流出する。つまり装置外に排出される。装置外に排出された空気９に含まれる微粉１１及び異物は集塵装置１７で回収され、ブロア１６の吐出口からはクリーンな空気９が大気に放出される。   At this time, the resin material 5 and the fine powder 11 contained in the resin material 5 or generated in the suction-type pipe transportation process to the molding machine 13 and the like are separated by centrifugal force. Fine powder 11 and foreign matter smaller than the filter hole 8 pass through the filter hole 8 together with the air 9 flowing into the annular space between the upper cylindrical portion 3a and the filter portion 4a from the inside of the filter portion 4a, and the annular shape between the casing 3 and the filter 4 It merges with the downward spiral air flow 19 generated in the space, turns downward while turning, and flows out tangentially from the outlet 12 together with the air 9. That is, it is discharged out of the apparatus. Fine powder 11 and foreign matter contained in the air 9 discharged outside the apparatus are collected by the dust collector 17, and clean air 9 is discharged from the discharge port of the blower 16 to the atmosphere.

そして、樹脂材料５によって適宜設定された装置内滞留時間（樹脂材料５によって異なる微粉１１及び異物除去に必要な時間）が経過した時に、ブロア１６の駆動を停止することにより、それまでフィルタ４の内外に生じていた螺旋気流１８，１９がなくなるので、上向きの螺旋気流１８によりフィルタ４内に強制滞留させていた樹脂材料５は自重で落下し、同時にダンパー７も開く。よって、微粉１１及び異物が目標とする高効率で除去されたクリーナな樹脂材料５が排出口６より流出される。つまり装置外の樹脂材料供給ポッパ１４に排出され、成形機１３に投入される。したがって、樹脂成形の際、樹脂材料５への微粉１１及び異物混入による成形不良を抑えることができる。   Then, when the residence time in the apparatus appropriately set by the resin material 5 (the time required for removing the fine powder 11 and the foreign matter depending on the resin material 5) has elapsed, the drive of the blower 16 is stopped, and thus the filter 4 until then. Since the spiral airflows 18 and 19 generated inside and outside are eliminated, the resin material 5 forcedly retained in the filter 4 by the upward spiral airflow 18 falls by its own weight, and at the same time the damper 7 is opened. Therefore, the cleaner resin material 5 from which the fine powder 11 and the foreign matter are removed with high efficiency targeted is discharged from the discharge port 6. In other words, it is discharged to the resin material supply popper 14 outside the apparatus and put into the molding machine 13. Therefore, it is possible to suppress molding defects due to mixing of the fine powder 11 and foreign matter into the resin material 5 during resin molding.

上記のように実施例１の微粉除去装置では、フィルタ４はケーシング３の中心線を軸とする逆円錐面内にあり、流入口１０はフィルタ４の下部より樹脂材料５と空気９を接線方向に流入させるという構成により、流入口１０より接線方向に流入した空気９により、フィルタ４内には逆円錐のフィルタ４内面に沿って旋回しながら下部より上部に向かう上向きの螺旋気流１８を生じ、その螺旋気流１８がある限り樹脂材料５はフィルタ４内で滞留するので、樹脂材料５の装置内滞留時間を任意に設定でき、樹脂材料５によって異なる微粉１１及び異物除去に必要な装置内滞留時間を確保でき、微粉１１及び異物を常に高効率で除去することができる。   As described above, in the fine powder removing apparatus according to the first embodiment, the filter 4 is in the inverted conical surface with the center line of the casing 3 as an axis, and the inlet 10 tangentially passes the resin material 5 and the air 9 from the lower part of the filter 4. The air 9 flowing in the tangential direction from the inflow port 10 causes the upward flow of the spiral air flow 18 from the lower part to the upper part while turning along the inner surface of the inverted conical filter 4. Since the resin material 5 stays in the filter 4 as long as the spiral air flow 18 exists, the residence time of the resin material 5 in the apparatus can be arbitrarily set, and the residence time in the apparatus necessary for removing the fine powder 11 and the foreign matters which differ depending on the resin material 5 The fine powder 11 and the foreign matter can always be removed with high efficiency.

また、フィルタ４は多数のフィルタ穴８を有するフィルタ部４ａを上部に設けるという構成により、空気９をフィルタ４の下部から外側に逃がすことなく、フィルタ４内に強い上向きの螺旋気流１８を発生させることができ、それに伴い遠心力が大きく作用するフィルタ４の上部で微粉１１及び異物の分離を効率よく行うことができる。   Further, the filter 4 is provided with a filter portion 4 a having a large number of filter holes 8 in the upper portion, thereby generating a strong upward spiral air flow 18 in the filter 4 without letting the air 9 escape from the lower portion of the filter 4 to the outside. Accordingly, the fine powder 11 and the foreign matter can be efficiently separated at the upper part of the filter 4 where the centrifugal force acts greatly.

図４は本発明にかかる微粉除去装置の実施例２を示す側面説明図である。図４に示すように実施例２の微粉除去装置は、フィルタ部４ａの下部外周囲に筒状のカバー２０を設置した点以外、実施例１の微粉除去装置と同じ構成・機能を有し、実施例１の微粉除去装置と同一部分には同一符号を付してある。   FIG. 4 is a side explanatory view showing Example 2 of the fine powder removing apparatus according to the present invention. As shown in FIG. 4, the fine powder removing device of Example 2 has the same configuration and function as the fine powder removing device of Example 1 except that a cylindrical cover 20 is installed around the lower outer periphery of the filter portion 4a. The same parts as those in the fine powder removing apparatus of the first embodiment are denoted by the same reference numerals.

カバー２０は通気性のない金属板から構成され、ケーシング３の軸方向（図４の紙面上下方向）の中心線を軸とする逆円錐面内にあり、逆円錐台形に形成され、上端から下端にわたりフィルタ部４ａとの間に同じ間隙を設けてフィルタ部４ａの下部外周囲に設置する。   The cover 20 is made of a non-breathable metal plate, is in an inverted conical surface with the center line in the axial direction of the casing 3 (up and down direction in FIG. 4) as an axis, is formed in an inverted frustoconical shape, and has an upper end and a lower end. The same gap is provided between the filter unit 4a and the filter unit 4a.

実施例２の微粉除去装置では、外側にカバー２０があるフィルタ部４ａの下部よりカバー２０がない上部で空気をより多く外側に逃がすので、フィルタ４内にさらに強い上向きの螺旋気流１８を発生させることができ、それに伴い遠心力がより大きく作用するフィルタ部４の上部で微粉１１及び異物の分離をより効率よく行うことができる。   In the fine powder removing apparatus according to the second embodiment, more air is released to the outside in the upper part where the cover 20 is not present than in the lower part of the filter part 4 a where the cover 20 is present on the outer side, and thus a stronger upward spiral air flow 18 is generated in the filter 4. Accordingly, the fine powder 11 and the foreign matter can be more efficiently separated at the upper part of the filter unit 4 where the centrifugal force acts more greatly.

ここで、外側にカバー２０がないフィルタ部４ａの上部を通過した空気９と微粉１１及び異物は、フィルタ部４ａの上部外側、カバー２０の外側、非フィルタ部４ｂの外側で生じている下向きの螺旋気流１９と合流し、流出口１２より接線方向に流出する。また外側にカバー２０があるフィルタ部４ａの下部でも空気９と微粉１１及び異物が通過し、カバー２０とフィルタ部４ａ間の環状空間に流入するが、そこでも下向きの螺旋気流が生じているので、フィルタ部４ａの下部を通過し、カバー２０とフィルタ部４ａ間の環状空間に流入した空気９と微粉１１及び異物は、そこに生じている下向きの螺旋気流に合流し、カバー２０の下端とフィルタ部４ａの下端との間隙より下円筒部３ｂと非フィルタ部４ｂ間の環状空間に流出し、そこに生じている下向きの螺旋気流１９と合流し、流出口１２より接線方向に流出する。   Here, the air 9 and the fine powder 11 and the foreign matter that have passed through the upper part of the filter part 4a without the cover 20 on the outside are generated downward on the upper part of the filter part 4a, on the outer side of the cover 20, and on the outer side of the non-filter part 4b. It merges with the spiral air flow 19 and flows out from the outlet 12 in the tangential direction. Air 9, fine powder 11 and foreign matter also pass through the lower part of the filter part 4 a having the cover 20 on the outside, and flow into the annular space between the cover 20 and the filter part 4 a, but a downward spiral airflow is also generated there. The air 9, the fine powder 11, and the foreign matter that have passed through the lower part of the filter part 4 a and flowed into the annular space between the cover 20 and the filter part 4 a merge into the downward spiral airflow generated there, It flows out into the annular space between the lower cylindrical portion 3b and the non-filter portion 4b through the gap between the lower end of the filter portion 4a, merges with the downward spiral airflow 19 generated there, and flows out from the outlet 12 in the tangential direction.

なお、カバー２０は図４においてフィルタ部４ａと並行に設置したが、カバー２０とフィルタ部４ａの間隙が、カバー２０の上端より下端で大きくなるような傾き、又はカバー２０の上端で隙間をなくすような傾き、又はカバー２０の上端で隙間をなくすように外側の上円筒部３ａと並行する円筒状で設置してもよい。   The cover 20 is installed in parallel with the filter unit 4a in FIG. 4, but the inclination is such that the gap between the cover 20 and the filter unit 4a is larger at the lower end than the upper end of the cover 20, or the gap is eliminated at the upper end of the cover 20. It may be installed in a cylindrical shape parallel to the outer upper cylindrical portion 3a so as to eliminate such a tilt or a gap at the upper end of the cover 20.

図５は本発明にかかる微粉除去装置の実施例３を示す側面説明図である。実施例１、２の微粉除去装置では、フィルタ４を通過した空気９と微粉１１及び異物をケーシング３の下部（下円筒部３ｂ）とフィルタ４の下部（非フィルタ部４ｂ）との間より接線方向に流出させるように、ケーシング３の下部に対して接線方向に流出口１２を設けたのに対し、図５に示すように実施例３の微粉除去装置では、フィルタ４を通過した空気９と微粉１１及び異物をケーシング３の上部、好ましくは最上部（上円筒部３ａの最上部）とフィルタ４の上部、好ましくは最上部（フィルタ部４ａの最上部）との間より接線方向に流出させるように、ケーシング３の上部、好ましくは最上部に対して接線方向に流出口１２ａを設けてある点が大きく相違し、フィルタ部４ａの下部外周囲に筒状のカバー２０を設置した点では実施例２の微粉除去装置と同じである。   FIG. 5 is a side explanatory view showing Example 3 of the fine powder removing apparatus according to the present invention. In the fine powder removing apparatus of the first and second embodiments, the air 9, the fine powder 11 and the foreign matter that have passed through the filter 4 are tangent between the lower part of the casing 3 (lower cylindrical part 3b) and the lower part of the filter 4 (non-filter part 4b). The outlet 12 is provided tangentially to the lower portion of the casing 3 so as to flow out in the direction, whereas in the fine powder removing device of Example 3 as shown in FIG. The fine powder 11 and the foreign matter are allowed to flow out in a tangential direction between the upper portion of the casing 3, preferably the uppermost portion (the uppermost portion of the upper cylindrical portion 3a) and the upper portion of the filter 4, preferably the uppermost portion (the uppermost portion of the filter portion 4a). Thus, the point that the outflow port 12a is provided in the tangential direction with respect to the upper part of the casing 3, preferably the uppermost part is greatly different, and the embodiment is implemented in that a cylindrical cover 20 is installed around the lower part of the lower part of the filter part 4a. Example 2 Is the same as the fine powder removal device.

また、ケーシング３の上部に対して接線方向に流出口１２ａを設けるため、ケーシング３の上部とフィルタ４の上部との間の環状空間を径方向外側に拡張するよう、ケーシング３は、下円筒部３ｂより大径の上円筒部３０ａと、この径違いの上円筒部３０ａと下円筒部３ｂ間の段差面を塞ぐリング状の段差板３０ｃとを有する。   Moreover, since the outflow port 12a is provided in the tangential direction with respect to the upper part of the casing 3, the casing 3 has a lower cylindrical portion so that an annular space between the upper part of the casing 3 and the upper part of the filter 4 is expanded radially outward. The upper cylindrical portion 30a has a diameter larger than 3b, and a ring-shaped step plate 30c that blocks the step surface between the upper cylindrical portion 30a and the lower cylindrical portion 3b having different diameters.

また、カバー２０の上端にはそこと上円筒部３０ａの間隙を流出口１２ａの直下で閉じる外向きのリング状の上鍔部２０ａを設け、カバー２０の下端にはそことフィルタ部４ａの下端（非フィルタ部４ｂの上端）の隙間を閉じるリング状の下鍔部２０ｂを設け、ケーシング３の上部、好ましくは最上部に接線方向の流出口１２ａを有する環状の流出空間３０を形成すると共に、カバー２０とフィルタ部４ａ間にある下部が閉じた環状空間の上部を流出空間３０に連通接続する。   Also, an outer ring-shaped upper collar portion 20a is provided at the upper end of the cover 20 so as to close the gap between the upper cylindrical portion 30a and the outlet 12a, and the lower end of the cover 20 is provided with the lower end of the filter portion 4a. A ring-shaped lower collar portion 20b that closes the gap (the upper end of the non-filter portion 4b) is provided, and an annular outflow space 30 having a tangential outflow port 12a is formed on the upper portion of the casing 3, preferably the uppermost portion. The upper part of the annular space closed between the cover 20 and the filter part 4 a is connected to the outflow space 30.

実施例３の微粉除去装置では、外側にカバー２０がないフィルタ部４ａの上部を通過した空気９と微粉１１及び異物は流出空間３０に直接流入し、そこに生じている旋回気流１９ａに合流し、流出口１２ａより接線方向に流出する。また外側にカバー２０があるフィルタ部４ａの下部でも空気９と微粉１１及び異物が通過し、カバー２０とフィルタ部４ａ間の環状空間に流入するが、そこには上向きの螺旋気流が生じているので、フィルタ部４ａの下部を通過し、カバー２０とフィルタ部４ａ間の環状空間に流入した空気９と微粉１１及び異物は、そこに生じている上向きの螺旋気流に合流し、流出空間３０に流入して、そこに生じている旋回気流１９ａに合流し、流出口１２ａより接線方向に流出する。   In the fine powder removing apparatus according to the third embodiment, the air 9, the fine powder 11, and the foreign matter that have passed through the upper part of the filter unit 4 a that does not have the cover 20 on the outside directly flow into the outflow space 30 and join the swirling airflow 19 a generated therein. , Flows out tangentially from the outlet 12a. Air 9, fine powder 11 and foreign matter also pass through the lower part of the filter part 4 a having the cover 20 on the outside and flow into the annular space between the cover 20 and the filter part 4 a, but an upward spiral airflow is generated there. Therefore, the air 9, the fine powder 11, and the foreign matter that have passed through the lower part of the filter unit 4 a and flowed into the annular space between the cover 20 and the filter unit 4 a merge into the upward spiral airflow generated there, and enter the outflow space 30. It flows in, merges with the swirling airflow 19a generated there, and flows out tangentially from the outlet 12a.

なお、実施例３の微粉除去装置は、上記以外、実施例１、２の微粉除去装置と同じ構成・機能を有し、実施例１、２の微粉除去装置と同一部分には同一符号を付してある。またケーシング３は下円筒部３ｂの直径を上円筒部３０ａの直径に合わせて段差板３０ｃをなくしたものであってもよい。   In addition to the above, the fine powder removing apparatus of Example 3 has the same configuration and function as the fine powder removing apparatus of Examples 1 and 2, and the same parts as those of the fine powder removing apparatus of Examples 1 and 2 are denoted by the same reference numerals. It is. In addition, the casing 3 may be configured such that the step plate 30c is eliminated by matching the diameter of the lower cylindrical portion 3b with the diameter of the upper cylindrical portion 30a.

以上、本実施形態では粉粒体の周知の吸引式管路輸送に適用した微粉除去装置で本発明を説明したが、本発明はそれに限定されることなく、その要旨を逸脱しない範囲内で種々変形実施することができる。例えば粉粒体の周知の圧送式管路輸送に適用でき、窒素ガスや炭酸ガスを輸送気体として用いる管路輸送にも適用できるものである。また、本実施形態では一種類の粉粒体を管路輸送し、微粉を除去する装置で本発明を説明したが、複数種類の粉粒体を管路輸送すると共に、混合し、微粉を除去する装置にも適用できるものである。   As described above, in the present embodiment, the present invention has been described with the fine powder removing device applied to the well-known suction-type pipeline transportation of the granular material. However, the present invention is not limited thereto, and various modifications can be made without departing from the scope of the present invention. Modifications can be made. For example, the present invention can be applied to the well-known pressure-feed type pipe transportation of granular materials, and can also be applied to the pipe transportation using nitrogen gas or carbon dioxide gas as a transport gas. Further, in the present embodiment, the present invention has been described with an apparatus that transports one type of powder and removes fine powder, but transports and mixes multiple kinds of powder and removes fine powder. The present invention can also be applied to an apparatus that performs the above.

３ ケーシング
４ フィルタ
４ａ フィルタ部
５ 樹脂材料（粉粒体）
８ フィルタ穴
９ 空気（輸送気体）
１０ 流入口
１１ 微粉
１２ 流出口
１２ａ 流出口
２０ カバー 3 Casing 4 Filter 4a Filter section 5 Resin material (powder)
8 Filter hole 9 Air (transport gas)
10 Inlet 11 Fine powder 12 Outlet 12a Outlet 20 Cover

Claims (5)

筒状のケーシングと、
前記ケーシング内に配置する筒状のフィルタと、
粉粒体の輸送気体と前記粉粒体を前記フィルタ内に流入させる流入口と、
前記フィルタを通過した前記輸送気体と微粉を前記ケーシングと前記フィルタとの間より接線方向に流出させる流出口を備えた微粉除去装置において、
前記フィルタは前記ケーシングの中心線を軸とする逆円錐面内にあり、
前記流入口は前記フィルタの下部より前記粉粒体と前記輸送気体を接線方向に流入させることを特徴とする微粉除去装置。 A cylindrical casing;
A cylindrical filter disposed in the casing;
An inflow port for flowing a granular material transport gas and the granular material into the filter;
In the fine powder removing apparatus provided with an outlet for allowing the transport gas and fine powder that have passed through the filter to flow out in a tangential direction from between the casing and the filter,
The filter is in an inverted conical plane about the casing centerline;
The fine powder removing apparatus, wherein the inlet allows the granular material and the transport gas to flow in a tangential direction from a lower part of the filter. 請求項１に記載の微粉除去装置において、
フィルタは多数のフィルタ穴を有するフィルタ部を上部に設けることを特徴とする微粉除去装置。 In the fine powder removal apparatus according to claim 1,
A fine powder removing device, wherein the filter is provided with a filter portion having a large number of filter holes in an upper part. 請求項２に記載の微粉除去装置において、
フィルタ部の下部外周囲に筒状のカバーを設置することを特徴とする微粉除去装置。 The fine powder removing apparatus according to claim 2,
A fine powder removing apparatus, characterized in that a cylindrical cover is installed around the lower outer periphery of the filter section. 請求項１乃至３の何れか１項に記載の微粉除去装置において、
流出口はフィルタを通過した輸送気体と微粉をケーシングの下部とフィルタの下部との間より接線方向に流出させることを特徴とする微粉除去装置。 In the fine powder removal apparatus according to any one of claims 1 to 3,
A fine powder removing device characterized in that the outflow outlet causes the transport gas and fine powder that have passed through the filter to flow out in a tangential direction from between the lower part of the casing and the lower part of the filter. 請求項１乃至３の何れか１項に記載の微粉除去装置において、
流出口はフィルタを通過した輸送気体と微粉をケーシングの上部とフィルタの上部との間より接線方向に流出させることを特徴とする微粉除去装置。 In the fine powder removal apparatus according to any one of claims 1 to 3,
A fine powder removing device characterized in that the outflow outlet causes the transport gas and fine powder that have passed through the filter to flow out in a tangential direction from between the upper part of the casing and the upper part of the filter.
JP2010090124A 2010-04-09 2010-04-09 Fine powder removal device Active JP5401392B2 (en)

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JP2010090124A JP5401392B2 (en) 2010-04-09 2010-04-09 Fine powder removal device
TW100111546A TWI539503B (en) 2010-04-09 2011-04-01 Fine powder removal apparatus
CN201110089536.1A CN102233326B (en) 2010-04-09 2011-04-01 Micropowder removing device

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