JP2011126192A - Dehydrating/drying device of resin granule - Google Patents
Dehydrating/drying device of resin granule Download PDFInfo
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- JP2011126192A JP2011126192A JP2009288050A JP2009288050A JP2011126192A JP 2011126192 A JP2011126192 A JP 2011126192A JP 2009288050 A JP2009288050 A JP 2009288050A JP 2009288050 A JP2009288050 A JP 2009288050A JP 2011126192 A JP2011126192 A JP 2011126192A
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- 229920005989 resin Polymers 0.000 title claims abstract description 199
- 239000011347 resin Substances 0.000 title claims abstract description 199
- 239000008187 granular material Substances 0.000 title claims abstract description 153
- 238000001035 drying Methods 0.000 title claims abstract description 89
- 239000000498 cooling water Substances 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims description 42
- 238000007664 blowing Methods 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 7
- 230000000717 retained effect Effects 0.000 claims description 2
- 230000018044 dehydration Effects 0.000 description 35
- 238000006297 dehydration reaction Methods 0.000 description 35
- 239000008188 pellet Substances 0.000 description 12
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000004080 punching Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000013618 particulate matter Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
本発明は、熱可塑性樹脂粒状物の製造装置から冷却水が混じった状態で取り出される樹脂粒状物を水から分離・乾燥させる樹脂粒状物の脱水・乾燥装置に関する。 The present invention relates to a resin granule dewatering / drying apparatus for separating and drying a resin granule taken out from a thermoplastic resin granule production apparatus in a mixed state of cooling water from water.
熱可塑性樹脂粒状物の製造装置においては、溶融した樹脂を複数のノズルから連続的に吐出し、該ノズル下方に配置した傾斜トラフに冷却水とともに流下することによってストランドを形成した後、所定の長さに切断してチップ状の樹脂粒状物としているため、製品となる樹脂粒状物は水と混合した状態で取り出される。したがって後工程においてこの樹脂粒状物と冷却水とを分離し前記樹脂粒状物を乾燥させる脱水・乾燥装置が欠かせないものとなっている。
従来この樹脂粒状物（ペレット）の脱水・乾燥装置としては、例えば特許文献１（特開２００５−７４９３５号公報）に開示された「入り口１１及びペレット排出口１２を形成する乾燥機本体１０と、貫通孔を有し、入り口１１から入った冷却水を含むペレットを乗せるパンチングプレート１６と、冷却水を排出させる冷却水排出口１３と、ペレットをペレット排出口１２に向けて移送させるように、パンチングプレート１６を加振する振動装置３０と、パンチングプレート１６の一端に設けられ、加熱させた空気を吹き出し、パンチングプレート１６上のペレットの乾燥を促す熱風流入口１０ａと、パンチングプレート１６の他側に設けられ、排気装置５３が接続されて熱風流入口１０ａから供給される熱風を排出させる熱風排出口１０ｂとを有する。」振動式脱水乾燥装置や、
特許文献２（特開２００３−５００８７号公報）に開示された「水中でカットされた樹脂ペレットは、回転体５４筒状スクリーン４０によって形成される筒状の内側空間部４３に供給され、回転体５４に取り付けられている複数の回転羽根３９によって掻き上げられて上方に搬送される。その途中に、樹脂ペレットの付着水分は遠心力にて脱水される。誘導加熱手段である誘導コイル６１に通電すると、回転体５４は、誘導される渦電流によって発熱し、回転体５４と内側空間４３内の雰囲気との温度を高めるので、脱水し切れずに樹脂ペレットに残る水分の蒸発が促されて、遠心脱水乾燥機５０の乾燥能力が向上する。」とした遠心脱水乾燥機などがある。
また、特許文献３（特公昭６３−５８６０２号公報）には、「粒子−水混合体を湾曲フィルタ上で、フィルタを抜ける水の方向およびフィルタに沿った方向に流れる空気によって脱水および乾燥し、それによって粒子−水混合体が輸送路から湾曲フィルタへ導かれ、空気の流れのエネルギによって湾曲フィルタ上でかきまわされ、湾曲フィルタの端部から排出路へ送られるようになっている脱水・乾燥装置であって、前記湾曲フィルタに対して向けられており、空気流によって運ばれてくる粒子−水混合体を湾曲フィルタ１に対して約２５°から７５°の角度で衝突させるための空気を噴出するジェット噴出口８が設けられ、ジェット噴出口８よりも流れ方向後方において、湾曲フィルタ１を覆い排出路１５に達する覆い１４が、覆い１４と湾曲フィルタ１との間で前記粒子を衝突往復させるために設けられていること。」などを特徴とした脱水・乾燥装置が開示されている。
前記特許文献１及び特許文献２に開示されているような振動や遠心力を用いて脱水乾燥する脱水・乾燥装置においては、パンチングプレートを震動させるための振動装置や、遠心力を発生する回転体を回転させるための装置が必要となり、また乾燥のために熱風を送り込んだり、誘電による渦電流によって回転体やその内側空間の雰囲気を加熱したりなど、装置が複雑で高価になり、運転経費も嵩むという問題がある。
これに対して特許文献３の脱水・乾燥装置は、空気流によって送られてくる粒子−水混合体を湾曲フィルタにジェット気流によって衝突させて脱水乾燥させる構造は、特許文献１及び２の装置に比べれば極めて単純であり、安価で運転経費も少なくてすむ利点がある。
しかし、特許文献３に記載の脱水・乾燥装置も、水と粒子の分離を行う湾曲フィルタの桟の目が、粒子の抜け落ちない間隔で設定されているため水の排出もジェット気流である程度強制的に行っていても十分とはいえず、また、粒子が湾曲フィルタと覆いとの間を衝突往復を繰り返しながら搬送されることから樹脂ペレットのような柔らかな材質の粒子では、その表面に衝突による傷がつくおそれもある。
In an apparatus for producing a thermoplastic resin granular material, a molten resin is continuously discharged from a plurality of nozzles, and a strand is formed by flowing together with cooling water to an inclined trough disposed below the nozzles. Since it is cut into a chip-like resin granule, the resin granule as a product is taken out in a state of being mixed with water. Therefore, a dehydration / drying apparatus for separating the resin granular material and the cooling water and drying the resin granular material in a subsequent process is indispensable.
Conventionally, as a dewatering / drying device for this resin granular material (pellet), for example, disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 2005-74935), “Dryer body 10 forming inlet 11 and pellet discharge port 12; Punching plate 16 having a through hole and carrying pellets containing cooling water entering from inlet 11, cooling water discharge port 13 for discharging cooling water, and punching so as to transfer pellets toward pellet discharge port 12 A vibration device 30 that vibrates the plate 16, a hot air inlet 10 a that is provided at one end of the punching plate 16, blows out heated air and promotes drying of the pellets on the punching plate 16, and the other side of the punching plate 16. Hot air outlet 10b that is provided and exhaust device 53 is connected to discharge hot air supplied from hot air inlet 10a. A. "And vibratory dewatering drying apparatus,
“Resin pellets cut in water are supplied to a cylindrical inner space 43 formed by a rotating body 54 cylindrical screen 40 and disclosed in Patent Document 2 (Japanese Patent Laid-Open No. 2003-50087). It is picked up by a plurality of rotating blades 39 attached to 54 and transported upward, while the adhering moisture on the resin pellets is dehydrated by centrifugal force, energizing the induction coil 61 as induction heating means. Then, the rotating body 54 generates heat due to the induced eddy current, and raises the temperature of the rotating body 54 and the atmosphere in the inner space 43, so that evaporation of moisture remaining in the resin pellets without being fully dehydrated is promoted. There is a centrifugal dehydration dryer and the like that the drying capacity of the centrifugal dehydration dryer 50 is improved.
Patent Document 3 (Japanese Patent Publication No. 63-58602) discloses that “a particle-water mixture is dehydrated and dried on a curved filter by air flowing in the direction of the water passing through the filter and along the filter, As a result, the particle-water mixture is guided from the transport path to the curved filter, is agitated on the curved filter by the energy of the air flow, and is sent to the discharge path from the end of the curved filter. A drying device, which is directed against the curved filter and for impinging the particle-water mixture carried by the air stream against the curved filter 1 at an angle of about 25 ° to 75 °. A jet outlet 8 is provided, and a cover 14 that covers the curved filter 1 and reaches the discharge path 15 is provided behind the jet 14 and the bay at the rear of the jet outlet 8 in the flow direction. A dehydration / drying device characterized by the above-mentioned is provided for reciprocating the particles with the curved filter 1.
In the dehydration / drying apparatus for dehydrating and drying using vibration and centrifugal force as disclosed in Patent Document 1 and Patent Document 2, the vibration apparatus for vibrating the punching plate and the rotating body for generating centrifugal force Equipment is required to rotate the device, and hot air is sent for drying, and the atmosphere of the rotating body and its inner space is heated by dielectric eddy currents. There is a problem that it is bulky.
On the other hand, the dehydration / drying apparatus of Patent Document 3 has a structure in which a particle-water mixture sent by an air stream is collided with a curved filter by a jet stream to dehydrate and dry the apparatus of Patent Documents 1 and 2. Compared to this, it has the advantage of being extremely simple, inexpensive and low in operating costs.
However, the dehydration / drying apparatus described in Patent Document 3 is also forced to a certain extent by the jet airflow because the curved filter cross-sections that separate the water and particles are set at intervals that prevent the particles from falling off. It is not sufficient to go to the surface, and the particles are transported between the curved filter and the cover while repeating the reciprocating collision. There is also a risk of scratching.
本発明は、上記背景技術に鑑み、熱可塑性樹脂粒状物の製造装置から冷却水が混じった状態で取り出される樹脂粒状物を冷却水から分離・脱水し、乾燥度の高い製品を歩留まりよく得られる樹脂粒状物の脱水・乾燥装置を提供しようとするものである。 In view of the above-mentioned background art, the present invention separates and dehydrates resin granular materials taken out from a thermoplastic resin granular production apparatus in a mixed state of cooling water from cooling water, and can obtain a product with high yield with high yield. An object of the present invention is to provide a dewatering / drying apparatus for resin particulates.
本発明者は、上記課題を下記の手段により解決した。
（１）熱可塑性樹脂粒状物製造装置から冷却水が混じった状態で取り出される樹脂粒状物を冷却水から分離するとともに、該樹脂粒状物に付着した残留水分を除去して乾燥させる樹脂粒状物の脱水・乾燥装置であって、
注入口と取出し口との間に、下方に湾曲した簀の子状の脱水フィルタと、該脱水フィルタの中央部上方に配置された脱水フィルタの幅方向を長辺とする扁平な吹出し口を有する空気吹出用のノズルと、前記ノズルの後方に所定距離離れ、かつ脱水フィルタの端末部上方に所定間隔を保って並設された壁板とを備えてなり、
注入口に注入され前記脱水フィルタ上を流下してくる冷却水と樹脂粒状物を、冷却水は前記の脱水フィルタの簀の子の目から下方に排出させ、樹脂粒状物は前記ノズルから吹き出す空気流によって前記ノズルと壁板との間の空間部に発生する上下方向の渦流に乗せて上下方向に浮遊回転させて分離し、かつ樹脂粒状物に付着した残留水分を前記樹脂粒状物の上下方向の浮遊回転時に、遠心力によって離脱させ、取出し口から乾燥した樹脂粒状物を取り出せるよう構成されてなることを特徴とする樹脂粒状物の脱水・乾燥装置。
The present inventor has solved the above problems by the following means.
(1) A resin granule that is taken out from a thermoplastic resin granule production apparatus in a state where cooling water is mixed is separated from the cooling water, and the residual moisture adhering to the resin granule is removed and dried. A dehydration and drying device,
Between the inlet and the outlet, an air outlet having a bowl-shaped dewatering filter curved downward, and a flat outlet having a longer side in the width direction of the dewatering filter disposed above the center of the dewatering filter And a wall plate arranged in parallel at a predetermined distance behind the nozzle and above the terminal portion of the dehydrating filter.
Cooling water and resin granules injected into the inlet and flowing down on the dewatering filter are discharged downward from the eyelet of the dewatering filter, and the resin particles are discharged by an air flow blown from the nozzle. A vertical vortex generated in the space between the nozzle and the wall plate is placed on a vertical vortex and separated by floating and rotating, and residual moisture adhering to the resin granular material is floated in the vertical direction. A resin granular material dewatering / drying device characterized in that, when rotating, the resin granular material can be removed by centrifugal force and dried resin particles can be taken out from an outlet.
（２）熱可塑性樹脂粒状物製造装置から冷却水が混じった状態で取り出される樹脂粒状物を冷却水から分離するとともに、該樹脂粒状物に付着した残留水分を除去し乾燥させる樹脂粒状物の脱水・乾燥装置であって、
注入口と取出し口との間に、下方に湾曲した簀の子状の脱水フィルタと、該脱水フィルタの中央部上方に配置された前記脱水フィルタの幅方向を長辺とする扁平な吹出し口を有する第１ノズルと、前記第１ノズルの後方に所定距離離れ、かつ脱水フィルタの端末部上方に所定間隔を保って並設された第２ノズルの、いずれも空気流吹出用の２つのノズルを備えてなり、
注入口に注入され前記脱水フィルタ上を流下してくる冷却水と樹脂粒状物を、冷却水は前記脱水フィルタの簀の子の目から下方に排出させ、樹脂粒状物は前記第１ノズルから吹き出す空気流によって前記第１ノズルと第２ノズルとの間の空間部に発生する上下方向の渦流に乗せて上下方向に浮遊回転させて分離し、かつ樹脂粒状物に付着した残留水分を前記空気流の上下方向の回転による遠心力によって離脱させ、さらに第２ノズルから吹き出す空気流によって脱水フィルタから残留水分を排出させ、取出し口から乾燥した樹脂粒状物を取り出せるよう構成されてなることを特徴とする樹脂粒状物の脱水・乾燥装置。
(2) Separation of resin particles taken out from the thermoplastic resin particle production apparatus in a mixed state of cooling water from the cooling water, and removal of residual water adhering to the resin particles and drying the resin particles A drying device,
Between the inlet and the outlet, there is provided a first dewatering filter that is curved downward and has a flat outlet that has a long side in the width direction of the dewatering filter disposed above the center of the dewatering filter. One nozzle and a second nozzle arranged in parallel at a predetermined distance behind the first nozzle and at a predetermined distance above the terminal portion of the dehydrating filter are both provided with two nozzles for airflow blowing. Become
Cooling water and resin granules injected into the inlet and flowing down on the dewatering filter are discharged downward from the eyelet of the dewatering filter, and the resin particles are blown out from the first nozzle. The residual moisture adhering to the resin particulate matter is separated from the upper and lower parts of the air flow by floating and rotating in the vertical direction on the vertical vortex generated in the space between the first nozzle and the second nozzle. Resin granules that are separated by centrifugal force due to rotation of the direction, and that residual moisture is discharged from the dehydration filter by an air flow blown from the second nozzle, and dried resin granules can be taken out from the take-out port Equipment for dehydration and drying.
（３）熱可塑性樹脂粒状物製造装置から冷却水が混じった状態で取り出される樹脂粒状物を冷却水から分離するとともに、該樹脂粒状物に付着した残留水分を除去し乾燥させる樹脂粒状物の脱水・乾燥装置であって、
注入口と取出し口との間に、下方に湾曲した簀の子状の脱水フィルタと、該脱水フィルタの中央部上方に配置された前記脱水フィルタの幅方向を長辺とする扁平な吹出し口を有する空気流吹出用の第１ノズルと、前記第１ノズルの後方に所定距離離れ、かつ脱水フィルタの端末部上方に所定間隔を保って並設された過熱蒸気流吹出用の第２ノズルとを備えてなり、
注入口に注入され前記脱水フィルタ上を流下してくる冷却水と樹脂粒状物を、冷却水は前記脱水フィルタの簀の子の目から下方に排出させ、樹脂粒状物は前記第１ノズルから吹き出す空気流によって前記第１ノズルと第２ノズルとの間の空間部に発生する上下方向の渦流に乗せて上下方向に浮遊回転させて分離し、かつ樹脂粒状物に付着した残留水分を前記空気流の上下方向の回転による遠心力によって除去し、さらに第２ノズルから吹き出す加熱蒸気流によって暖めて乾燥し、前記過熱蒸気流で暖められた樹脂粒状物を取出し口に取り付けられる次工程の乾燥装置において即座に冷却し、樹脂粒状物同士の融着を防止して形状の整った乾燥した樹脂粒状物を取り出されるよう構成されてなることを特徴とする樹脂粒状物の脱水・乾燥装置。
(3) The resin granule taken out from the thermoplastic resin granule production apparatus in a mixed state with the cooling water is separated from the cooling water, and the residual water adhering to the resin granule is removed and dried. A drying device,
Between the inlet and the outlet, an airfoil having a bowl-shaped dewatering filter curved downward and a flat outlet having a long side in the width direction of the dewatering filter disposed above the center of the dewatering filter A first nozzle for flow blowing, and a second nozzle for blowing superheated steam arranged in parallel at a predetermined distance behind the first nozzle and above the terminal portion of the dehydration filter. Become
Cooling water and resin granules injected into the inlet and flowing down on the dewatering filter are discharged downward from the eyelet of the dewatering filter, and the resin particles are blown out from the first nozzle. The residual moisture adhering to the resin particulate matter is separated from the upper and lower parts of the air flow by floating and rotating in the vertical direction on the vertical vortex generated in the space between the first nozzle and the second nozzle. In the drying apparatus of the next process in which the resin granular material heated by the superheated steam flow is attached to the take-out port immediately after being removed by centrifugal force due to the rotation of the direction and further heated and dried by the heated steam flow blown from the second nozzle. An apparatus for dehydrating and drying resin granules, wherein the apparatus is configured to cool and prevent the resin granules from fusing together and to take out dried resin granules having a uniform shape.
（４）前記上方に湾曲した簀の子状の脱水フィルタの湾曲形状が、冷却水と樹脂粒状物の混合体の注入口での接線方向が鉛直で、乾燥された樹脂粒状物が取り出される取出し口側での接線が水平である円弧又は楕円孤状をしてなることを特徴とする前項（１）〜（３）のいずれか１項に記載の樹脂粒状物の脱水・乾燥装置。 (4) The curved shape of the bowl-shaped dewatering filter curved upward is such that the tangential direction at the inlet of the mixture of cooling water and resin granules is vertical, and the outlet side from which the dried resin granules are taken out The dewatering / drying apparatus for resin granular materials according to any one of the above items (1) to (3), wherein the tangent line is a circular arc or an elliptical arc.
（５）前記各ノズルが、鉛直面に対して樹脂粒状物の取出し口の方向に２°〜２０°傾けて配設されてなることを特徴とする前項（１）〜（４）のいずれか１項に記載の樹脂粒状物の脱水・乾燥装置。 (5) Any one of (1) to (4) above, wherein each of the nozzles is disposed at an angle of 2 ° to 20 ° in the direction of the outlet of the resin granular material with respect to the vertical plane. The dehydration / drying apparatus for resin granules according to Item 1.
（６）前記簀の子状の脱水フィルタの樹脂粒状物が取り出される取出し口側に平滑な面を有する搬送板を配置し、脱水乾燥された樹脂粒状物を前記壁板、あるいは第２ノズルの前方空間部に滞留させることなく円滑に搬送可能にしてなることを特徴とする前項（１）〜（５）のいずれか１項に記載の樹脂粒状物の脱水・乾燥装置。 (6) A transport plate having a smooth surface is arranged on the take-out side from which the resin particles of the spider-like dewatering filter are taken out, and the dehydrated and dried resin particles are placed in the front space of the wall plate or the second nozzle. The apparatus for dewatering and drying a resin granular material according to any one of (1) to (5) above, wherein the apparatus can be smoothly conveyed without being retained in the section.
本発明の樹脂粒状物の脱水・乾燥装置においては、下記の効果が発揮できる。
〈１〉請求項１の発明によれば、
熱可塑性樹脂粒状物製造装置から冷却水が混じった状態で取り出される樹脂粒状物を冷却水から分離し乾燥させる樹脂粒状物の脱水・乾燥装置が、注入口と取出し口との間に、下方に湾曲した簀の子状の脱水フィルタと、該脱水フィルタの中央部上方に配置された脱水フィルタの幅方向を長辺とする扁平な吹出し口を有する空気吹出用のノズルと、前記ノズルの後方に所定距離離れ、かつ脱水フィルタの端末部上方に所定間隔を保って配置された壁板とを備え、注入口に注入され前記脱水フィルタ上を流下してくる冷却水と樹脂粒状物を、冷却水は前記脱水フィルタの簀の子の目から下方に流出させ、樹脂粒状物は前記ノズルから吹き出す空気流によって前記ノズルと壁板との間の空間部に発生する上下方向の渦流に乗せて上下方向に浮遊回転させられるよう構成されているので、
簡易な構造で脱水でき、かつ樹脂粒状物に付着した残留水分は前記樹脂粒状の上下方向の浮遊回転による遠心力の作用によって飛散され、乾燥度の高い樹脂粒状物が歩留まりよく得られる。また、樹脂粒状物は浮遊回転するので装置構造体に衝突する機会が少なく、表面に傷のない良質な製品が得られる。
The resin granule dehydration / drying apparatus of the present invention can exhibit the following effects.
<1> According to the invention of claim 1,
A resin granule dewatering / drying device that separates and drys the resin granules taken out from the thermoplastic resin particle production equipment in a mixed state with the cooling water from the cooling water is provided between the inlet and the outlet. A curved spear-shaped dewatering filter, an air blowing nozzle having a flat air outlet having a longer side in the width direction of the dewatering filter disposed above the center of the dewatering filter, and a predetermined distance behind the nozzle And a wall plate disposed at a predetermined interval above the terminal portion of the dewatering filter, and the cooling water and resin particulates injected into the inlet and flowing down on the dewatering filter, The resin particles are allowed to flow downward from the eyelet of the dewatering filter, and the resin particles are suspended in the vertical direction on the vertical vortex generated in the space between the nozzle and the wall plate by the air flow blown from the nozzle. Because it is configured to be allowed,
Residual moisture that can be dehydrated with a simple structure and adhered to the resin granules is scattered by the action of centrifugal force caused by floating rotation of the resin granules in the vertical direction, and highly dry resin granules can be obtained with a high yield. In addition, since the resin granular material floats and rotates, there is little opportunity to collide with the device structure, and a high-quality product with no scratches on the surface can be obtained.
〈２〉請求項２の発明によれば、
熱可塑性樹脂粒状物製造装置から冷却水が混じった状態で取り出される樹脂粒状物を冷却水から分離するとともに、該樹脂粒状物に付着した残留水分を除去し乾燥させる樹脂粒状物の脱水・乾燥装置が、注入口と取出し口との間に、下方に湾曲した簀の子状の脱水フィルタと、該脱水フィルタの中央部上方に配置された前記脱水フィルタの幅方向を長辺とする扁平な吹出し口を有する第１ノズルと、前記第１ノズルの後方に所定距離離れ、かつ脱水フィルタの端末部上方に所定間隔を保って並設された第２ノズルの、いずれも空気流吹出用の２つのノズルを備え、注入口に注入され前記脱水フィルタ上を流下してくる冷却水と樹脂粒状物を、冷却水は前記脱水フィルタの簀の子の目から下方に排出させ、樹脂粒状物は前記第１ノズルから吹き出す空気流によって前記第１ノズルと第２ノズルとの間の空間部に発生する上下方向の渦流に乗せて上下方向に浮遊回転させて分離し、かつ樹脂粒状物に付着した残留水分を前記空気流の上下方向の回転による遠心力によって離脱させ、さらに第２ノズルから吹き出す空気流によって前記脱水フィルタから残留水分を排出するよう構成されているので、
簡易な構造で脱水でき、かつ樹脂粒状物に付着した残留水分は前記樹脂粒状の上下方向の浮遊回転による遠心力の作用によって飛散され、乾燥度の高い樹脂粒状物が歩留まりよく得られる。また、樹脂粒状物は浮遊回転するので装置構造体に衝突する機会が少なく、表面に傷のない良質な製品が得られる。
<2> According to the invention of claim 2,
A resin granule dewatering / drying device for separating resin granules taken out from a thermoplastic resin granule production apparatus in a mixed state of cooling water from the cooling water and removing residual moisture adhering to the resin granules and drying the resin granules. However, between the inlet and the outlet, there is a bowl-shaped dehydrating filter curved downward, and a flat outlet having a long side in the width direction of the dehydrating filter disposed above the center of the dehydrating filter. A first nozzle having two nozzles for blowing out an air flow, both of a first nozzle having a predetermined distance behind the first nozzle and arranged in parallel at a predetermined interval above the terminal portion of the dehydrating filter. The cooling water and the resin granules injected into the inlet and flowing down on the dewatering filter are discharged downward from the eyelet of the dewatering filter, and the resin particles are blown from the first nozzle. The residual moisture adhering to the resin particulates is separated by being floated and rotated in the vertical direction on the vertical vortex generated in the space between the first nozzle and the second nozzle by the air flow. Since it is separated by centrifugal force due to the vertical rotation of the flow, and further, the residual water is discharged from the dehydration filter by the air flow blown from the second nozzle,
Residual moisture that can be dehydrated with a simple structure and adhered to the resin granules is scattered by the action of centrifugal force caused by floating rotation of the resin granules in the vertical direction, and highly dry resin granules can be obtained with a high yield. In addition, since the resin granular material floats and rotates, there is little opportunity to collide with the device structure, and a high-quality product with no scratches on the surface can be obtained.
〈３〉請求項３の発明によれば、
熱可塑性樹脂粒状物製造装置から冷却水が混じった状態で取り出される樹脂粒状物を冷却水から分離するとともに、該樹脂粒状物に付着した残留水分を除去し乾燥させる樹脂粒状物の脱水・乾燥装置が、注入口と取出し口との間に、下方に湾曲した簀の子状の脱水フィルタと、該脱水フィルタの中央部上方に配置された前記脱水フィルタの幅方向を長辺とする扁平な吹出し口を有する空気流吹出用の第１ノズルと、前記第１ノズルの後方に所定距離離れ、かつ脱水フィルタの端末部上方に所定間隔を保って並設された過熱蒸気流吹出用の第２ノズルとを備え、注入口に注入され前記脱水フィルタ上を流下してくる冷却水と樹脂粒状物を、冷却水は前記脱水フィルタの簀の子の目から下方に排出させ、樹脂粒状物は前記第１ノズルから吹き出す空気流によって前記第１ノズルと第２ノズルとの間の空間部に発生する上下方向の渦流に乗せて上下方向に浮遊回転させて分離し、かつ樹脂粒状物に付着した残留水分を前記空気流の上下方向の回転による遠心力によって除去し、さらに第２ノズルから吹き出す過熱蒸気流によって暖めて乾燥し、前記過熱蒸気流で暖められた樹脂粒状物を取出し口に取り付けられる次工程の装置において即座に冷却するよう構成されているので、
簡易な構造で脱水でき、かつ樹脂粒状物に付着した残留水分は前記樹脂粒状の上下方向の浮遊回転による遠心力の作用による飛散と前記第２ノズルから吹き出す過熱蒸気流の熱とよってに除去され、さらに過熱蒸気で暖められた樹脂粒状物が次工程で即座に冷却され、乾燥度が高く樹脂粒状物同士の融着のない形状の整った樹脂粒状物が歩留まりよく得られる。また、樹脂粒状物は浮遊回転するので装置構造体に衝突する機会が少なく、表面に傷のない良質な製品が得られる。
<3> According to the invention of claim 3,
A resin granule dewatering / drying device for separating resin granules taken out from a thermoplastic resin granule production apparatus in a mixed state of cooling water from the cooling water and removing residual moisture adhering to the resin granules and drying the resin granules. However, between the inlet and the outlet, there is a bowl-shaped dehydrating filter curved downward, and a flat outlet having a long side in the width direction of the dehydrating filter disposed above the center of the dehydrating filter. A first nozzle for blowing out airflow, and a second nozzle for blowing out superheated steam arranged in parallel with a predetermined distance behind the first nozzle and above the end of the dehydrating filter. The cooling water and resin particulates that are injected into the inlet and flow down on the dehydrating filter are discharged downward from the eyelet of the dewatering filter, and the resin particulates are blown out from the first nozzle. The air flow is separated by floating and rotating in the vertical direction on the vertical vortex generated in the space between the first nozzle and the second nozzle by the air flow, and remaining on the resin particles. Immediately in the apparatus of the next process which is removed by centrifugal force due to rotation in the vertical direction, further heated and dried by the superheated steam flow blown from the second nozzle, and attached to the take-out port of the resin particulates warmed by the superheated steam flow Since it is configured to cool,
Residual moisture that can be dehydrated with a simple structure and adhered to the resin granules is removed by scattering due to the centrifugal force due to the floating rotation of the resin granules in the vertical direction and the heat of the superheated steam flow blown from the second nozzle. Further, the resin granules warmed by the superheated steam are immediately cooled in the next step, and the resin granules having a high degree of dryness and a shape without fusion between the resin granules can be obtained with a high yield. In addition, since the resin granular material floats and rotates, there is little opportunity to collide with the device structure, and a high-quality product with no scratches on the surface can be obtained.
〈４〉請求項４及び５の発明によれば、
前記上方に湾曲した簀の子状の脱水フィルタの湾曲形状が、冷却水と樹脂粒状物の混合体が流入する側の端点での接線方向が鉛直で、乾燥された樹脂粒状物が排出される側の端点での接線が水平である円弧又は楕円孤状をしており、また前記各ノズルが、鉛直面に対して樹脂粒状物の移動方向に２°〜２０°傾けて並設されているので、製造する樹脂粒状物の形状、質量、あるいはノズルから吹き出す空気又は過熱水蒸気の流量などに対応して、脱水フィルタの形状や、各ノズルの配置位置、及び傾斜角が設定可能で、脱水・乾燥効率の高い樹脂粒状物脱水・乾燥装置が実現できる。
<4> According to the inventions of claims 4 and 5,
The curved shape of the bowl-shaped dewatering filter curved upward is such that the tangential direction at the end point on the side where the mixture of cooling water and resin granules flows is vertical, and the dried resin granules are discharged. Since the tangent line at the end point is a circular arc or an elliptical arc, and the nozzles are arranged in parallel at an angle of 2 ° to 20 ° with respect to the moving direction of the resin granular material with respect to the vertical plane, Depending on the shape and mass of the resin granules to be produced, or the flow rate of air or superheated steam blown from the nozzles, the shape of the dewatering filter, the position of each nozzle, and the inclination angle can be set. High-resin granular material dehydration and drying equipment can be realized.
〈５〉請求項６の発明によれば、
前記簀の子状の脱水フィルタの樹脂粒状物が取り出される取出し口側に平滑な面を有する搬送板を配置しているので、脱水・乾燥された樹脂粒状物を前記壁板、あるいは第２ノズルの前方の空間部に滞留させることなく円滑に取出し口まで搬送することができる。
<5> According to the invention of claim 6,
Since the transport plate having a smooth surface is arranged on the outlet side from which the resin particles of the spider-like dewatering filter are taken out, the dehydrated and dried resin particles are placed in front of the wall plate or the second nozzle. Can be smoothly transported to the take-out port without staying in the space.
本発明の樹脂粒状物脱水・乾燥装置を実施するための形態を、実施例の図に基づいて説明する。
図１は本発明の樹脂粒状物脱水・乾燥装置の一実施例の構造を示す断面斜視図、図２は本発明の樹脂粒状物脱水・乾燥装置の他の実施例の構造を示す断面斜視図、図３は図２に示す樹脂粒状物脱水・乾燥装置と次工程の乾燥装置を一体化して構成した実験装置の構造図、図４は図３に示す実験装置における第１ノズルと第２ノズルとの設置位置関係図であり、図５は装置内の樹脂の移動経路を示す模式図である。
図において１、１’、１”は樹脂粒状物脱水・乾燥装置、２は脱水フィルタ、３はノズル、３ａは第１ノズル、３ｂは第２ノズル、４は壁板、５は搬送板、６は注入口、７は取出し口、８は樹脂粒状物を示す。また１０：は次工程の乾燥装置、１２は同乾燥装置の脱水フィルタ、１３ａ〜１３ｅは空気流吹出し口、（１２ａは冷却空気流吹出し口）、１４は空気流分配調整弁、１６は樹脂粒状物投入口、１７は製品取出し口を示す。
The form for implementing the resin granular material dehydration and drying apparatus of this invention is demonstrated based on the figure of an Example.
FIG. 1 is a cross-sectional perspective view showing the structure of one embodiment of the resin granular material dewatering / drying apparatus of the present invention. FIG. 2 is a cross-sectional perspective view showing the structure of another embodiment of the resin granular material dewatering / drying apparatus of the present invention. 3 is a structural diagram of an experimental apparatus in which the resin granular material dewatering / drying apparatus shown in FIG. 2 and the drying apparatus of the next process are integrated, and FIG. 4 is a first nozzle and a second nozzle in the experimental apparatus shown in FIG. FIG. 5 is a schematic diagram showing the movement path of the resin in the apparatus.
In the figure, 1, 1 ′, 1 ″ are resin granule dehydration / drying devices, 2 is a dewatering filter, 3 is a nozzle, 3a is a first nozzle, 3b is a second nozzle, 4 is a wall plate, 5 is a transport plate, 6 Is an inlet, 7 is an outlet, 8 is a resin granule, 10 is a drying device for the next step, 12 is a dehydration filter of the drying device, 13a to 13e are air flow outlets, and 12a is cooling air. 14 is an air flow distribution regulating valve, 16 is a resin granular material inlet, and 17 is a product outlet.
本発明の樹脂粒状物脱水・乾燥装置の第１の実施例は、図１に示すように、注入口６と取出し口７との間に、下方に湾曲した簀の子状の脱水フィルタ２と、該脱水フィルタ１の中央部上方に配置され、脱水フィルタ１の幅方向を長辺とする扁平な吹出し口を有する空気流吹出用ノズル３と、前記ノズル３の後方に所定距離離れ、かつ脱水フィルター２の端末部上方に所定間隔を保って並設された壁板４とを備え、熱可塑性樹脂粒状物製造装置から注入口６に注入され前記脱水フィルタ２上を流下してくる冷却水と樹脂粒状物を、冷却水は脱水フィルタ２の簀の子の目から下方に流出させ、樹脂粒状物は前記ノズル３から吹き出す空気流によって前記ノズル３と壁板４との間の空間部に発生する上下方向の渦流に乗せて上下方向に浮遊回転させられるよう構成されている。
また、前記簀の子状の脱水フィルタ２と樹脂粒状物が取り出される取出し口７との間に平滑な面を有する搬送板５を配置している。
As shown in FIG. 1, the first embodiment of the resin granular material dewatering / drying apparatus of the present invention includes, as shown in FIG. 1, a bowl-shaped dewatering filter 2 curved downwardly between an inlet 6 and an outlet 7, An air flow blowing nozzle 3 which is arranged above the center of the dehydrating filter 1 and has a flat blowing port having a long side in the width direction of the dehydrating filter 1, is separated from the nozzle 3 by a predetermined distance, and the dehydrating filter 2 And a wall plate 4 arranged side by side at a predetermined interval above the end of the cooling water and the resin granules injected into the injection port 6 from the thermoplastic resin particle manufacturing apparatus and flowing down on the dehydration filter 2 The cooling water is allowed to flow downward from the eyelets of the dewatering filter 2, and the resin granular material is generated in the vertical direction generated in the space between the nozzle 3 and the wall plate 4 by the air flow blown from the nozzle 3. Floating and rotating up and down in a vortex It is configured to be.
Moreover, the conveyance board 5 which has a smooth surface is arrange | positioned between the said dehydrating filter 2 of a cage shape, and the taking-out opening 7 from which the resin granular material is taken out.
本実施例の樹脂粒状物脱水・乾燥装置１における脱水・乾燥処理は、次のようにして行われる（図５参照）。
ａ．熱可塑性樹脂粒状物製造装置から冷却水が混じって搬送されてくる樹脂粒状物を注入口６から受け入れて前記注入口６につながる下方に湾曲した簀の子状の脱水フィルタ２上に流し、前記冷却水を脱水フィルタ２の簀の子の目からノズル３から吹き出す空気流によって下方に流出させて樹脂粒状物と分離させる。なお、脱水フィルタ１の簀の子の目が樹脂粒状物の大きさより細かく作られているので、樹脂粒状物が脱水フィルタから落下することはない。
ｂ．冷却水と分離された前記脱水フィルタ２上の樹脂粒状物は、ノズル３から吹き出す空気流が簀の子状のフィルタ２に定められた傾斜角度をもって衝突し前方上方に向かって反射された空気流に乗って脱水フィルタ２から浮かび上がる。
ｃ．前方上方に向かった空気流は壁板４で再度反射され、ノズル３と壁板４との間の空間部に上下に回転する渦流を発生させる。前記樹脂粒状物もその空気の渦流によって浮遊し回転する。この際回転に伴う遠心力によって樹脂粒状物に付着していた残留水分が飛散し、乾燥が促進される。
ｄ．乾燥した樹脂粒状物は、壁板４の下部と脱水フィルタ２との間隙から取出し口７に向かうが、前記脱水フィルタ２と取出し口７との間に配置された平滑な面を有する搬送板５によって、壁板４前方の空間部に滞留することなく円滑に搬送されて取り出され、又は前記取り出し口７に接続された次工程の乾燥装置（図３参照）に送り込まれる。
The dehydration / drying process in the resin granular material dehydration / drying apparatus 1 of the present embodiment is performed as follows (see FIG. 5).
a. The resin particles mixed with the cooling water from the thermoplastic resin particle manufacturing apparatus are received from the injection port 6 and flowed onto the downwardly curved bowl-shaped dehydration filter 2 connected to the injection port 6, and the cooling water Is discharged downward by an air flow blown from the nozzle 3 of the dew filter of the dehydrating filter 2 and separated from the resin particulates. In addition, since the eyelet of the dehydrating filter 1 is made finer than the size of the resin granular material, the resin granular material does not fall from the dehydrating filter.
b. The resin particulates on the dewatering filter 2 separated from the cooling water ride on the air flow reflected from the upper front side when the air flow blown from the nozzle 3 collides with the slanted filter 2 at an inclined angle. To emerge from the dewatering filter 2.
c. The air flow directed forward and upward is reflected again by the wall plate 4 to generate a swirl that rotates up and down in the space between the nozzle 3 and the wall plate 4. The resin particulates also float and rotate due to the air vortex. At this time, the residual water adhering to the resin granular material is scattered by the centrifugal force accompanying the rotation, and drying is promoted.
d. The dried resin granules are directed to the take-out port 7 through the gap between the lower portion of the wall plate 4 and the dewatering filter 2, but the transport plate 5 having a smooth surface disposed between the dewatering filter 2 and the take-out port 7. Thus, the liquid is smoothly transported and taken out without staying in the space portion in front of the wall plate 4 or sent to the drying device (see FIG. 3) connected to the take-out port 7.
本発明の樹脂粒状物脱水・乾燥装置の第２の実施例は、図２に示すように、注入口６と取出し口７との間に、下方に湾曲した簀の子状の脱水フィルタ２と、該脱水フィルタ２の中央部上方に配置され、脱水フィルタ２の幅方向を長辺とする扁平な吹出し口を有する用の第１ノズル３ａと、前記第１ノズル３ａの後方に所定距離離れ、かつ脱水フィルター２の端末部上方に所定間隔を保って並設された第２ノズル３ｂとのいずれも空気流吹出用の２つのノズルを備え、熱可塑性樹脂粒状物製造装置から注入口６に注入されて前記脱水フィルタ２上を流下してくる冷却水と樹脂粒状物を、冷却水は脱水フィルタ２の簀の子の目から下方に流出させ、樹脂粒状物は前記第１ノズル３ａから吹き出す空気流によって前記第１ノズル３ａと第２ノズル３ｂとの間の空間部に発生する上下方向の渦流に乗せて上下方向に浮遊回転させられるよう構成されている。なお第２ノズル３ｂは残留水分をさらの脱水フィルタの２の簀の子の目から下方に流出させるのに使用される。
また、前記簀の子状の脱水フィルタ２の樹脂粒状物が取り出される取出し口６側に平滑な面を有する搬送板４を配置している。
As shown in FIG. 2, the second embodiment of the resin granular material dewatering / drying apparatus of the present invention has a bowl-shaped dewatering filter 2 curved downward between the inlet 6 and the outlet 7, A first nozzle 3a that is disposed above the center of the dewatering filter 2 and has a flat outlet having a long side in the width direction of the dewatering filter 2 is separated from the first nozzle 3a by a predetermined distance and dehydrated. Both of the second nozzles 3b arranged in parallel above the terminal portion of the filter 2 with a predetermined interval are provided with two nozzles for air flow blowing, and are injected into the injection port 6 from the thermoplastic resin granular material manufacturing apparatus. The cooling water and the resin particles flowing down on the dewatering filter 2 are allowed to flow downward from the eyelets of the dewatering filter 2 and the resin particles are discharged by the air flow blown out from the first nozzle 3a. 1 nozzle 3a and 2nd nozzle 3 Placed on a vertical vortex flow generated in the space portion is configured to be suspended rotated in the vertical direction between the. The second nozzle 3b is used to allow residual moisture to flow downward from the second spider eye of the further dewatering filter.
Moreover, the conveyance board 4 which has a smooth surface is arrange | positioned at the extraction port 6 side from which the resin granular material of the said saddle-like dehydration filter 2 is taken out.
本実施例の樹脂製粒状物脱水・乾燥装置１’における脱水・乾燥処理は次のようにして行われる（図５参照）。
ａ．熱可塑性樹脂粒状物製造装置から冷却水が混じって搬送されてくる樹脂粒状物を注入口６から受け入れて前記注入口６につながる下方に湾曲した簀の子状の脱水フィルタ２上に流し、前記冷却水を脱水フィルタ２の簀の子の目から第１ノズル３ａから吹き出す空気流によって下方に排出させて樹脂粒状物と分離させる。なお、脱水フィルタ１の簀の子の目が樹脂粒状物の大きさより細かく作られているので、樹脂粒状物が脱水フィルタから落下することはない。。
ｂ．冷却水と分離された前記脱水フィルタ２上の樹脂粒状物は、ノズル３から吹き出す空気流が簀の子状のフィルタ２にある傾斜角度をもって衝突し前方上方に向かって反射される空気流に乗って脱水フィルタ２から浮かび上がる。
ｃ．前方上方に向かった空気流は第２ノズル３ｂの壁面で再度反射されて、第１ノズル３ａと第２ノズル３ｂとの間の空間部に上下に回転する渦流を発生する。前記樹脂粒状物もその空気の渦流に乗って浮遊し回転する。この際回転に伴う遠心力によっても樹脂粒状物に付着した残留水分が飛散し乾燥が促進される。
ｄ．乾燥した樹脂粒状物は、第２ノズル３ｂの下部と脱水フィルタ２との間隙から取出し口７に向かうが、前記フィルタ２と取出し口７との間に配置された平滑な面を有する搬送板５によって、第２ノズル３ｂの前方の空間部に滞留することなく円滑に搬送されて取り出され、又は前記取り出し口７に接続された次工程の乾燥装置１０（図３参照）に送り込まれる。
The dewatering / drying process in the resin granular material dewatering / drying apparatus 1 ′ of the present embodiment is performed as follows (see FIG. 5).
a. The resin particles mixed with the cooling water from the thermoplastic resin particle manufacturing apparatus are received from the injection port 6 and flowed onto the downwardly curved bowl-shaped dehydration filter 2 connected to the injection port 6, and the cooling water Is discharged downward by an air flow blown from the first nozzle 3a through the eyelet of the dehydrating filter 2 and separated from the resin particulate matter. In addition, since the eyelet of the dehydrating filter 1 is made finer than the size of the resin granular material, the resin granular material does not fall from the dehydrating filter. .
b. The resin granular material on the dewatering filter 2 separated from the cooling water is dehydrated by riding on the air flow that the air flow blown out from the nozzle 3 collides with the slanted filter-like filter 2 with an inclination angle and is reflected upward and forward. It emerges from the filter 2.
c. The air flow directed forward and upward is reflected again by the wall surface of the second nozzle 3b, and generates a vortex that rotates up and down in the space between the first nozzle 3a and the second nozzle 3b. The resin particulates also float and rotate on the air vortex. At this time, the residual moisture adhering to the resin particles is scattered by the centrifugal force accompanying the rotation, and drying is promoted.
d. The dried resin granules are directed to the take-out port 7 through the gap between the lower portion of the second nozzle 3b and the dewatering filter 2, but have a smooth surface disposed between the filter 2 and the take-out port 7. Thus, the liquid is smoothly transported and taken out without staying in the space in front of the second nozzle 3b, or sent to the drying device 10 (see FIG. 3) of the next process connected to the takeout port 7.
本発明の樹脂粒状物脱水・乾燥装置の第３の実施例は、図２に示す樹脂粒状物脱水・乾燥装置の第２ノズル３ｂから過熱蒸気流を吹き出させ、その熱でより高い乾燥度を得ようとするものである。
本実施例の樹脂粒状物脱水・乾燥装置１”の構造は、前記実施例２説明した樹脂粒状物脱水・乾燥装置１’と同じであり、詳細な説明は省略する。
なお、過熱蒸気流で暖められた樹脂粒状物は融着したり型くずれしやすいので、早期に冷却する必要があるので、取出し口７に接続される次工程の乾燥装置１０（図３参照）の樹脂粒状物投入口近傍に冷却空気吹ノズルを１３ａ（図３参照）を設けて対応する。
In the third embodiment of the resin granular material dewatering / drying apparatus of the present invention, a superheated steam flow is blown from the second nozzle 3b of the resin granular material dewatering / drying apparatus shown in FIG. I want to get it.
The structure of the resin granular material dewatering / drying apparatus 1 ″ of this embodiment is the same as that of the resin granular material dewatering / drying apparatus 1 ′ described in the second embodiment, and a detailed description thereof will be omitted.
In addition, since the resin granular material warmed by the superheated steam flow is likely to be fused or deformed, it is necessary to cool early, so that the drying apparatus 10 (see FIG. 3) of the next process connected to the take-out port 7 is used. A cooling air blowing nozzle 13a (see FIG. 3) is provided in the vicinity of the resin granular material charging port.
本実施例の樹脂製粒状物脱水・乾燥装置１”における脱水・乾燥処理は次のようにして行われる（図５参照）。
ａ．熱可塑性樹脂粒状物製造装置から冷却水が混じって搬送されてくる樹脂粒状物を注入口６から受け入れて前記注入口６につながる下方に湾曲した簀の子状の脱水フィルタ２上に流し、前記冷却水を脱水フィルタ２の簀の子の目から第１ノズル３ａから吹き出す空気流によって下方に流出させて樹脂粒状物と分離させる。なお、脱水フィルタ１の簀の子の目が樹脂粒状物の大きさより細かく作られているので、樹脂粒状物が脱水フィルタから落下することはない。
ｂ．冷却水と分離された前記脱水フィルタ２上の樹脂粒状物は、ノズル３から吹き出す空気流が簀の子状のフィルタ２に定められた傾斜角度をもって衝突し前方上方に向かって反射される空気流に乗って脱水フィルタ２から浮かび上がる。
ｃ．前方上方に向かった空気流は第２ノズル３ｂの壁面で再度反射されて、第１ノズル３ａと第２ノズル３ｂとの間の空間部に上下に回転する渦流を発生する。前記樹脂粒状物もその空気の渦流に乗って浮遊し回転する。この際回転に伴う遠心力によっても樹脂粒状物に付着した残留水分が飛散し乾燥が促進される。
ｄ．乾燥した樹脂粒状物は、第２ノズル３ｂの下部と脱水フィルタ２との間隙から取出し口７に向かうが、前記第２ノズルから吹き出される加熱蒸気流によって暖められ、その熱によって付着した残留水分が蒸発して乾燥が促進されつつ取出し口７に向かう。この際、
前記フィルタ２と取出し口７との間に配置された平滑な面を有する搬送板５によって、第２ノズル３ｂの前方の空間部に樹脂粒状物が滞留することなく円滑に搬送され、前記取り出し口７に接続された次工程の乾燥装置１０（図３参照）に送り込まれる。
ｅ．過熱蒸気流で暖められた樹脂粒状物は融着したり型くずれしやすいので、取出し口７に接続される次工程の乾燥装置１０の樹脂粒状物投入口１６（図３参照）近傍に冷却空気吹出用ノズルを１３ａ（図３参照）を設けて対応し、形状が均一で乾燥度の高い樹脂粒状物を得る。
The dewatering / drying process in the resin granular material dewatering / drying apparatus 1 ″ of the present embodiment is performed as follows (see FIG. 5).
a. The resin particles mixed with the cooling water from the thermoplastic resin particle manufacturing apparatus are received from the injection port 6 and flowed onto the downwardly curved bowl-shaped dehydration filter 2 connected to the injection port 6, and the cooling water Is drained downward by the air flow blown from the first nozzle 3a from the eyelet of the dewatering filter 2 and separated from the resin particles. In addition, since the eyelet of the dehydrating filter 1 is made finer than the size of the resin granular material, the resin granular material does not fall from the dehydrating filter.
b. The resin particulate matter on the dewatering filter 2 separated from the cooling water rides on the air flow that the air flow blown from the nozzle 3 collides with the slanted filter-like filter 2 at an inclination angle and is reflected forward and upward. To emerge from the dewatering filter 2.
c. The air flow directed forward and upward is reflected again by the wall surface of the second nozzle 3b, and generates a vortex that rotates up and down in the space between the first nozzle 3a and the second nozzle 3b. The resin particulates also float and rotate on the air vortex. At this time, the residual moisture adhering to the resin particles is scattered by the centrifugal force accompanying the rotation, and drying is promoted.
d. The dried resin particles are heated from the gap between the lower portion of the second nozzle 3b and the dehydration filter 2 toward the take-out port 7, but are heated by the heated steam flow blown from the second nozzle, and the residual moisture adhered by the heat. Evaporates to the outlet 7 while drying is promoted. On this occasion,
The transport plate 5 having a smooth surface disposed between the filter 2 and the take-out port 7 smoothly conveys the resin particulate matter without remaining in the space in front of the second nozzle 3b. 7 is sent to the drying apparatus 10 (see FIG. 3) of the next process connected to the apparatus 7.
e. Since the resin particles warmed by the superheated steam flow are likely to be fused or deformed, the cooling air is blown out in the vicinity of the resin particle input port 16 (see FIG. 3) of the drying device 10 connected to the take-out port 7. Nozzle 13a (see FIG. 3) is provided, and a resin granule having a uniform shape and high dryness is obtained.
本発明の樹脂粒状物脱水・乾燥装置の効果を確認するため、図３に示す実験機を試作し、実施例２に基づく実験を実施し、従来の遠心脱水機等との間で、装置から取り出した直後の付着水分率を比較した。
この実験に使用した実験機の第１ノズル３ａと第２ノズル３ｂとの設置位置関係を図４に示す。各ノズルの傾斜角は１４°とした。
実験は、前記試作機及び遠心脱水機それぞれに毎秒１００リットルの冷却水（水温２１℃）と３１２ｇの低密度ポリエチレンのペレットの混合試料を注入し１０回の抜き取りによって行いその平均値で比較した。なお、比較した付着水分率は、実験機、又は遠心脱水機等から取り出された直後に所定容器に収容されたほぼ１０００個分のペレットの質量Ｗ1と、同ペレットをさらに別途乾燥機に加えて十分乾燥させた後の質量Ｗ2から次式によって求めたものである。
FIG. 4 shows the installation positional relationship between the first nozzle 3a and the second nozzle 3b of the experimental machine used in this experiment. The inclination angle of each nozzle was 14 °.
The experiment was performed by injecting a mixed sample of 100 liters of cooling water (water temperature 21 ° C.) and 312 g of low density polyethylene pellets into each of the prototype and the centrifugal dehydrator 10 times, and comparing the average values. In addition, compared with the moisture content of the comparison, the mass W 1 of approximately 1000 pellets stored in a predetermined container immediately after being taken out from an experimental machine, a centrifugal dehydrator or the like, and the pellets are further added to a dryer. And obtained from the following formula from the mass W 2 after sufficiently drying.
実験結果は、本発明の樹脂粒状物脱水・乾燥装置の付着水分率は０．０６１重量％、遠心脱水機においては，０．１１０重量％となり、また参考までにた特許文献３の発明に準拠した脱水・乾燥装置についても測定したが、０．１２４３重量％の値を示し、本発明の樹脂粒状物脱水・乾燥装置の高い脱水・乾燥効果が確かめられた。
なお、図３の乾燥装置１０についての詳細説明は省略するが、図面における１２ａ〜１２ｅは装置に投入された樹脂粒状物を装置内で搬送する空気流を導入するための空気流吹出し口であり、特に本発明の樹脂粒状物脱水・乾燥装置１”で第２ノズル３ｂが過熱蒸気吹出用として使用される場合には、符号１３ａで示したノズルは冷却空気吹出し口とされる。
そして１４は、搬送路の直線部の前後端で吹き出させる空気量を分配調整する空気流分配調整弁を示している。直線部分の前端に配置されたノズル１３ａ、１３ｃ、１３ｅは主に直線部分の搬送に、後端に配置されたノズル１３ｂ、１３ｄは搬送路の屈曲部の脱水フィルタ１２に沿っての移動に寄与する。
また、搬送路の屈曲点に配置される前記脱水フィルタ１２は、、前記空気流で搬送される樹脂粒状を円滑に方向転換させ、かつそのときに加わる遠心力によって付着した残留水を排出させる断面が円弧状したものが好ましい。
The experimental results show that the adhering moisture content of the resin granular material dewatering / drying apparatus of the present invention is 0.061% by weight, and the centrifugal dehydrator is 0.110% by weight, and conforms to the invention of Patent Document 3 for reference. The dehydration / drying apparatus was also measured and showed a value of 0.1243% by weight, confirming the high dehydration / drying effect of the resin particulate dehydration / drying apparatus of the present invention.
In addition, although detailed description about the drying apparatus 10 of FIG. 3 is abbreviate | omitted, 12a-12e in drawing is an airflow blow-out opening for introducing the airflow which conveys the resin granular material thrown into the apparatus in an apparatus. In particular, when the second nozzle 3b is used for superheated steam blowing in the resin granular material dewatering / drying apparatus 1 ″ of the present invention, the nozzle indicated by reference numeral 13a is a cooling air blowing port.
Reference numeral 14 denotes an air flow distribution adjusting valve that distributes and adjusts the amount of air blown off at the front and rear ends of the linear portion of the conveyance path. The nozzles 13a, 13c, and 13e arranged at the front end of the straight portion mainly contribute to the conveyance of the straight portion, and the nozzles 13b and 13d arranged at the rear end contribute to the movement of the bent portion of the conveyance path along the dehydration filter 12. To do.
The dewatering filter 12 disposed at the bending point of the transport path smoothly changes the direction of the resin particles transported by the air flow and discharges the residual water attached by the centrifugal force applied at that time. Are preferably arcuate.
１、１’、１”：樹脂粒状物脱水・乾燥装置
２：脱水フィルタ
３：ノズル
３ａ：第１ノズル
３ｂ：第２ノズル
４：壁板
５：搬送板
６：注入口
７：取出し口
８：樹脂粒状物
１０：乾燥装置
１２：脱水フィルタ
１３ａ〜１３ｅ：空気流吹出し口
１４：空気流分配調整弁
１６：樹脂粒状物投入口
１７：製品取出し口
DESCRIPTION OF SYMBOLS 1, 1 ', 1 ": Resin granular material dehydration and drying apparatus 2: Dehydration filter 3: Nozzle 3a: 1st nozzle 3b: 2nd nozzle 4: Wall board 5: Conveyance board 6: Inlet 7: Extraction port 8: Resin granular material 10: Drying device 12: Dehydration filter 13a-13e: Air flow outlet 14: Air flow distribution regulating valve 16: Resin granular material inlet 17: Product outlet
Claims (6)
注入口（６）と取出し口（７）との間に、下方に湾曲した簀の子状の脱水フィルタ（２）と、該脱水フィルタ（２）の中央部上方に配置された脱水フィルタ（２）の幅方向を長辺とする扁平な吹出し口を有する空気流吹出用のノズル（３）と、前記ノズル（３）の後方に所定距離離れ、かつ脱水フィルタ（２）の端末部上方に所定間隔を保って並設された壁板（４）とを備えてなり、
注入口（６）に注入され、前記脱水フィルタ（２）上を流下してくる冷却水と樹脂粒状物を、冷却水は前記脱水フィルタ（２）の簀の子の目から下方に排出させ、樹脂粒状物は前記ノズル（３）から吹き出す空気流によって前記ノズル（３）と壁板（４）との間の空間部に発生する上下方向の渦流に乗せて上下方向に浮遊回転させて分離し、かつ樹脂粒状物に付着した残留水分を前記樹脂粒状物の上下方向の浮遊回転時に、遠心力によって離脱させ、取出し口（７）から乾燥した樹脂粒状物が取り出せるよう構成されてなることを特徴とする樹脂粒状物の脱水・乾燥装置。 The resin granular material taken out from the thermoplastic resin granular material manufacturing apparatus in a mixed state with the cooling water is separated from the cooling water, and the residual water adhering to the resin granular material is removed and dried. A device (1) comprising:
Between the inlet (6) and the outlet (7), there is a spider-shaped dewatering filter (2) curved downward, and a dewatering filter (2) disposed above the center of the dewatering filter (2). An air flow blowing nozzle (3) having a flat blowing port having a long side in the width direction, and a predetermined distance apart behind the nozzle (3) and above the terminal portion of the dewatering filter (2). A wall plate (4) arranged side by side,
Cooling water and resin particulates injected into the inlet (6) and flowing down on the dewatering filter (2) are discharged downward from the eyelet of the dewatering filter (2) to form resin granules. The object is separated by floating and rotating in the vertical direction on the vertical vortex generated in the space between the nozzle (3) and the wall plate (4) by the air flow blown from the nozzle (3), and Residual moisture adhering to the resin granules is separated by centrifugal force during the vertical floating rotation of the resin granules, and the dried resin granules can be taken out from the take-out port (7). Dewatering / drying equipment for resin granules.
注入口（６）と取出し口（７）との間に、下方に湾曲した簀の子状の脱水フィルタ（２）と、該脱水フィルタ（２）の中央部上方に配置された前記脱水フィルタ（２）の幅方向を長辺とする扁平な吹出し口を有する第１ノズル（３ａ）と、前記第１ノズル（３ａ）の後方に所定距離離れ、かつ脱水フィルタ（２）の端末部上方に所定間隔を保って並設された第２ノズル（３ｂ）とのいずれも空気流吹出用の２つのノズルを備えてなり、
注入口（６）に注入され前記脱水フィルタ（２）上を流下してくる冷却水と樹脂粒状物を、冷却水は前記脱水フィルタ（２）の簀の子の目から下方に排出させ、樹脂粒状物は前記第１ノズル（３ａ）から吹き出す空気流によって前記第１ノズル（３ａ）と第２ノズル（３ｂ）との間の空間部に発生する上下方向の渦流に乗せて上下方向に浮遊回転させて分離し、かつ樹脂粒状物に付着した残留水分を前記空気流の上下方向の回転による遠心力によって離脱させ、さらに第２ノズル（３ｂ）から吹き出す空気流によって前記脱水フィルタ（２）から残留水分を下方に排出し、取出し口（７）から乾燥した樹脂粒状物を取り出せるよう構成されてなることを特徴とする樹脂粒状物の脱水・乾燥装置。 A resin granule dewatering / drying device for separating resin granules taken out from a thermoplastic resin granule production apparatus in a mixed state of cooling water from the cooling water and removing residual moisture adhering to the resin granules and drying the resin granules. (1 ')
Between the inlet (6) and the outlet (7), a spider-shaped dewatering filter (2) curved downward, and the dewatering filter (2) disposed above the center of the dewatering filter (2) The first nozzle (3a) having a flat outlet having a long side in the width direction is spaced a predetermined distance behind the first nozzle (3a) and spaced above the terminal portion of the dewatering filter (2). Both of the second nozzles (3b) arranged side by side are provided with two nozzles for air flow blowing,
Cooling water and resin particles injected into the inlet (6) and flowing down on the dewatering filter (2) are discharged downward from the eyelets of the dewatering filter (2), and the resin particles Is floated and rotated in the vertical direction on the vertical vortex generated in the space between the first nozzle (3a) and the second nozzle (3b) by the air flow blown from the first nozzle (3a). The residual moisture that has been separated and adhered to the resin particulates is separated by centrifugal force due to the vertical rotation of the air flow, and the residual moisture is removed from the dewatering filter (2) by the air flow blown from the second nozzle (3b). An apparatus for dewatering and drying resin granules, wherein the apparatus is configured to discharge downward and to take out the dried resin granules from an outlet (7).
注入口（６）と取出し口（７）との間に、下方に湾曲した簀の子状の脱水フィルタ（２）と、該脱水フィルタ（２）の中央部上方に配置された前記脱水フィルタ（２）の幅方向を長辺とする扁平な吹出し口を有する空気流吹出用の第１ノズル（３ａ）と、前記第１ノズル（３ａ）の後方に所定距離離れ、かつ脱水フィルタ（２）の端末部上方に所定間隔を保って並設された過熱蒸気流吹出用の第２ノズル（３ｂ）とを備えてなり、
注入口（６）に注入され前記脱水フィルタ（２）上を流下してくる冷却水と樹脂粒状物を、冷却水は前記脱水フィルタ（２）の簀の子の目から下方に排出させ、樹脂粒状物は前記第１ノズル（３ａ）から吹き出す空気流によって前記第１ノズル（３ａ）と第２ノズル（３ｂ）との間の空間部に発生する上下方向の渦流に乗せて上下方向に浮遊回転させて分離し、かつ樹脂粒状物に付着した残留水分を前記空気流の上下方向の回転による遠心力によって除去し、さらに第２ノズル（３ｂ）から吹き出す加熱蒸気流によって暖めて乾燥し、前記過熱蒸気流で暖められた樹脂粒状物を取出し口（７）に取り付けられる次工程の乾燥装置（１０）において即座に冷却し、樹脂粒状物同士の融着を防止して形状の整った乾燥した樹脂粒状物を取り出されるよう構成されてなることを特徴とする樹脂粒状物の脱水・乾燥装置。 A resin granule dewatering / drying device for separating resin granules taken out from a thermoplastic resin granule production apparatus in a mixed state of cooling water from the cooling water and removing residual moisture adhering to the resin granules and drying the resin granules. (1 ”)
Between the inlet (6) and the outlet (7), a spider-shaped dewatering filter (2) curved downward, and the dewatering filter (2) disposed above the center of the dewatering filter (2) The first nozzle (3a) for airflow blowing having a flat blowout port having a long side in the width direction, and a terminal portion of the dewatering filter (2) that is separated by a predetermined distance behind the first nozzle (3a) A second nozzle (3b) for blowing out superheated steam arranged in parallel at a predetermined interval above,
Cooling water and resin particles injected into the inlet (6) and flowing down on the dewatering filter (2) are discharged downward from the eyelets of the dewatering filter (2), and the resin particles Is floated and rotated in the vertical direction on the vertical vortex generated in the space between the first nozzle (3a) and the second nozzle (3b) by the air flow blown from the first nozzle (3a). The residual water that has been separated and adhered to the resin particulates is removed by centrifugal force due to the vertical rotation of the air flow, and further heated and dried by the heated steam flow blown from the second nozzle (3b), and the superheated steam flow The dried resin granules that are immediately cooled in the drying apparatus (10) of the next step that is attached to the take-out port (7) by taking out the resin granules that have been warmed in the step, and prevent the resin granules from fusing together. Is taken out Dehydrating and drying apparatus of the resin granules, characterized by comprising configured.
A transport plate (5) having a smooth surface is disposed on the side of the take-out port (7) from which the resin granules of the basket-like dewatering filter (2) are taken out, and the dehydrated and dried resin granules are placed on the wall plate (4). Or the resin granular material according to any one of claims 1 to 5, wherein the resin granular material can be smoothly transported without being retained in the front space of the second nozzle (3b). apparatus.
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| JP2009288050A JP5477570B2 (en) | 2009-12-18 | 2009-12-18 | Resin granular material dehydration and drying equipment |
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| JP2009288050A JP5477570B2 (en) | 2009-12-18 | 2009-12-18 | Resin granular material dehydration and drying equipment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5314805A (en) * | 1976-07-19 | 1978-02-09 | Black Clawson Co | Process and device for diffusing flow |
| JPS57165213U (en) * | 1981-04-10 | 1982-10-18 | ||
| JPS61179708A (en) * | 1985-02-05 | 1986-08-12 | Nippon Erasutoran Kk | Air-blast dehydrator |
| JP2001341125A (en) * | 2000-06-05 | 2001-12-11 | Japan Steel Works Ltd:The | Vibrating dewatering/screening apparatus for resin pellet producing apparatus |
| JP2006263680A (en) * | 2005-03-25 | 2006-10-05 | Dainippon Ink & Chem Inc | Dewatering cyclone |
-
2009
- 2009-12-18 JP JP2009288050A patent/JP5477570B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5314805A (en) * | 1976-07-19 | 1978-02-09 | Black Clawson Co | Process and device for diffusing flow |
| JPS57165213U (en) * | 1981-04-10 | 1982-10-18 | ||
| JPS61179708A (en) * | 1985-02-05 | 1986-08-12 | Nippon Erasutoran Kk | Air-blast dehydrator |
| JP2001341125A (en) * | 2000-06-05 | 2001-12-11 | Japan Steel Works Ltd:The | Vibrating dewatering/screening apparatus for resin pellet producing apparatus |
| JP2006263680A (en) * | 2005-03-25 | 2006-10-05 | Dainippon Ink & Chem Inc | Dewatering cyclone |
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| JP5477570B2 (en) | 2014-04-23 |
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