JPH02136209A - Method and apparatus for mixing granular resin - Google Patents
Method and apparatus for mixing granular resinInfo
- Publication number
- JPH02136209A JPH02136209A JP29048688A JP29048688A JPH02136209A JP H02136209 A JPH02136209 A JP H02136209A JP 29048688 A JP29048688 A JP 29048688A JP 29048688 A JP29048688 A JP 29048688A JP H02136209 A JPH02136209 A JP H02136209A
- Authority
- JP
- Japan
- Prior art keywords
- container
- wall surface
- frost
- granular
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011347 resin Substances 0.000 title claims abstract description 54
- 229920005989 resin Polymers 0.000 title claims abstract description 54
- 238000002156 mixing Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims description 10
- 239000000110 cooling liquid Substances 0.000 claims abstract description 10
- 239000000654 additive Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000004927 fusion Effects 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 12
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Accessories For Mixers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は粒状樹脂の混合方法及びその装置に係り、特に
、プラスチック製造の前処理に於いて、種類を異する粒
状樹脂と可塑剤のような添加物等とを容器内で混合する
粒状樹脂の混合方法及びその装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for mixing granular resins and an apparatus therefor, and in particular, in pre-treatment for plastic manufacturing, mixing different types of granular resins and plasticizers, etc. The present invention relates to a method for mixing granular resin with additives, etc. in a container, and an apparatus therefor.
従来からエンジニアリングプラスチック等の製造の前処
理として、粒状樹脂同志或いは粒状樹脂と添加物とを混
合する場合、又は２種類以上の樹脂を混合する場合には
バッチ方式の混合容器が使用されている。BACKGROUND ART Conventionally, batch-type mixing containers have been used as pretreatment for manufacturing engineering plastics and the like when mixing granular resins or granular resins and additives, or when mixing two or more types of resins.
従来、この種の混合装置は、円筒状の混合容器と回転羽
根を有した撹拌機とから構成されている。Conventionally, this type of mixing device is composed of a cylindrical mixing container and an agitator having rotating blades.
混合用の各樹脂原料は粒状に形成されており、呼量され
た後に混合容器内に供給される。Each resin raw material for mixing is formed into granules, and is fed into a mixing container after being weighed.
次に撹拌機の回転羽根を回転させると、樹脂原料は容器
の中央部から回転羽根の軸方向に沿って流下し、流下し
た樹脂原料は容器内壁の底面に沿って移動し、内壁側面
を上昇する。そして、回転羽根の上方には固定板が設け
られ、上昇した樹脂原料は容器の中央部に寄せられ、再
び回転羽根の軸に沿って流下される。これを繰り返すこ
とによって、樹脂原料の粒子同志が互いに摺接或いは置
換して混合される。又、このような樹脂原料の撹拌は、
その原料粒子に大きな運動エネルギーが付与される為に
、回転羽根の回転周速は略２０ｍ／ｓ程度で行われる。Next, when the rotary blade of the stirrer is rotated, the resin raw material flows down from the center of the container along the axial direction of the rotary blade, and the resin raw material that flows down moves along the bottom of the inner wall of the container and rises up the side of the inner wall. do. A fixed plate is provided above the rotary blade, and the rising resin raw material is gathered at the center of the container, and is again flowed down along the axis of the rotary blade. By repeating this, the particles of the resin raw material slide into or replace each other and are mixed. In addition, stirring of such resin raw materials,
Since large kinetic energy is imparted to the raw material particles, the rotation speed of the rotary blade is approximately 20 m/s.
しかしながら、混合原料である粒状のｍ指素材は、エン
ジニアリングプラスチック等の比較的融点が低い樹脂を
主体に使用している為、粒状の樹脂同志は混合装置での
急速な撹拌による摺接で摩擦熱が発生し、その熱によっ
て、軟化或いは溶融し、混合容器内壁に付着する不具合
がある。混合容器等に樹脂等の付着が生じると、添加物
の混合割合が供給時に秤量した割合と相違する問題が生
じていた。又、コンタミネーションを防止する為、混合
操作毎に容器内壁の清掃が必要とされ、内壁に付着した
樹脂の融着物は水洗等では簡単に除去できず、内壁の清
掃の為に多くの作業員の手作業による手間を要していた
。However, the granular m-finger material, which is a mixed raw material, mainly uses resins with relatively low melting points such as engineering plastics, so the granular resins generate frictional heat due to sliding contact due to rapid stirring in the mixing device. The heat generated causes the mixture to soften or melt and adhere to the inner wall of the mixing container. When resin or the like adheres to a mixing container or the like, a problem arises in that the mixing ratio of additives differs from the ratio weighed at the time of supply. In addition, to prevent contamination, it is necessary to clean the inner wall of the container after each mixing operation, and the fused resin adhering to the inner wall cannot be easily removed by washing with water, so cleaning the inner wall requires many workers. This required a lot of manual labor.
本発明はこのような事情に鑑みて成されたもので、粒状
樹脂の混合時にその樹脂原料が容器内壁面に付着しない
粒状樹脂の混合方法及びその装置を提供することを目的
とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method and apparatus for mixing granular resin in which the resin raw material does not adhere to the inner wall surface of a container during mixing of granular resin.
本発明は、前記目的を達成する為に、粒状樹脂同志或い
は粒状樹脂と添加物とを容器内で混合する粒状樹脂の混
合方法に於いて、前記容器の内壁面に霜を形成させた状
態で粒状樹脂を混合することを特徴とする。In order to achieve the above object, the present invention provides a granular resin mixing method in which granular resins or granular resins and additives are mixed in a container, in which frost is formed on the inner wall surface of the container. It is characterized by mixing granular resin.
本発明によれば、容器内の内壁面を０℃以下に冷却して
前記容器内に高湿度のエアを噴出させ、容器の内壁面を
霜で覆った後に、粒状樹脂の混合を実施する。According to the present invention, the granular resin is mixed after the inner wall surface of the container is cooled to 0° C. or lower and highly humid air is blown into the container to cover the inner wall surface of the container with frost.
前記箱の付着量は検出制御手段によって必要十分な看に
設定されるようになっている。これによって、混合され
た粒状樹脂は容器内壁面が霜で覆われている為、前記内
壁面に付着しないようになる。The amount of adhesion on the box is set to a necessary and sufficient level by the detection control means. As a result, the mixed granular resin does not adhere to the inner wall surface of the container because the inner wall surface of the container is covered with frost.
以下添付図面に従って本発明に係る粒状樹脂の混合方法
及びその装置の好ましい実施例を詳説する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the granular resin mixing method and device according to the present invention will be described in detail below with reference to the accompanying drawings.
第１図は本発明に係る粒状樹脂の混合装置の概略構造図
が示されている。第１図に於いて、混合装置の容器１０
は容器壁が中空形成されたジャケット構造に構成され、
容器１０の底面中央部には回転自在な撹拌羽根１１が取
付けられている。また、前記容器壁の内部１２には冷却
液（冷媒）が送流される。容器壁内１２の冷却液はパイ
プ１４を介して貯留タンク１６に送られ、タンク１６内
の冷却液はクーラ２０によって０℃以下に冷却された後
、冷却ポンプ１８によってパイプ２２を介して再び容器
内壁内１２に送られる。冷却液はブライン或いは不凍液
等が用いられ、クーラ２０によって０℃以下に冷却され
るが、好ましくは−６〜−１０℃程度に冷却されて容器
壁１２内に送流される。この冷却液の送流により、容器
工２の内壁面１０Ａは一５℃程度に冷却される。FIG. 1 shows a schematic structural diagram of a granular resin mixing apparatus according to the present invention. In FIG. 1, a container 10 of the mixing device
has a jacket structure with a hollow container wall,
A rotatable stirring blade 11 is attached to the center of the bottom surface of the container 10. Further, a cooling liquid (refrigerant) is sent into the interior 12 of the container wall. The cooling liquid inside the container wall 12 is sent to the storage tank 16 via the pipe 14, and after the cooling liquid in the tank 16 is cooled to below 0°C by the cooler 20, it is sent to the container again via the pipe 22 by the cooling pump 18. It is sent to the inner wall 12. Brine, antifreeze, or the like is used as the cooling liquid, and the cooling liquid is cooled to below 0°C by the cooler 20, preferably to about -6 to -10°C, and then sent into the container wall 12. By this flow of cooling liquid, the inner wall surface 10A of the container 2 is cooled to about -5°C.
一方、容器１０の側面及び底面を構成する内壁面１０Ａ
には、加湿空気供給器３０から加湿空気弁４６を有した
ダクト３２を介して噴射口３４から加湿空気が供給され
霜が形成される。On the other hand, an inner wall surface 10A forming the side and bottom surfaces of the container 10
Humidified air is supplied from a humidified air supply device 30 through a duct 32 having a humidified air valve 46 and from an injection port 34 to form frost.
前記箱の形成量は１ ｍＪ当たり数グラム（厚さにして
数１０ミクロン）と極めて小さく、前記形成量は常温の
ペレットを用いて混合時間を１分間程度とし、た場合に
適用される値であり、混合時に樹脂が撹拌され摺動の摩
擦熱を発生しても、霜層を維持するに必要十分な量に設
定される。The amount of the box formed is extremely small, a few grams per 1 mJ (several tens of microns in thickness), and the amount of the box formed is the value applied when pellets at room temperature are used and the mixing time is about 1 minute. The amount is set to be necessary and sufficient to maintain a frost layer even if the resin is agitated during mixing and generates frictional heat from sliding.
霜の生成量は、第１図に示すように容器内壁面１０Ａに
隣接された発光素子４２と受光素子４４で構成された反
射光受光センサーを備えた霜検出器４０で検出される。The amount of frost generated is detected by a frost detector 40 equipped with a reflected light receiving sensor composed of a light emitting element 42 and a light receiving element 44 adjacent to the inner wall surface 10A of the container, as shown in FIG.
霜検出器４０は、第２図及び第３図に示すように、発光
素子４２によって内壁面１０Ａの任意の一部を照射し、
その光の反射光を受光素子４４によって受光し、受光し
た光量の割合を比較演算する機能を有している。As shown in FIGS. 2 and 3, the frost detector 40 irradiates an arbitrary part of the inner wall surface 10A with a light emitting element 42,
It has a function of receiving the reflected light by the light receiving element 44 and comparing and calculating the ratio of the amount of received light.
また、発光素子４２の照射量に対する受光素子４４の受
光量の割合を受光率とすると、第２図に示すように霜が
形成される前の内壁面１０Ａに照射された光は略全量が
受光素子４４に検出される為、受光率は１００％近くな
る。一方、第３図のように内壁面１０Ａに霜層１３が形
成されている場合は、照射された光は霜層１３表面の凹
凸で散乱される為、受光素子４４に受光される発光量は
少なくなることで受光率が小さくなる。付着量が小さい
範囲では受光率は付着量に比例して低減する関係がある
。Furthermore, if the ratio of the amount of light received by the light receiving element 44 to the amount of irradiation from the light emitting element 42 is defined as the light reception rate, then as shown in FIG. Since the light is detected by the element 44, the light reception rate is close to 100%. On the other hand, when the frost layer 13 is formed on the inner wall surface 10A as shown in FIG. As the amount decreases, the light reception rate decreases. In a range where the amount of adhesion is small, the light reception rate decreases in proportion to the amount of adhesion.
第４図は、前記の関係が実験によって求められた結果が
示されている。第４図に於いて、任意の霜付着量ｇ （
ｇ／ｍ’） に対応する受光率Ｘ（％）が決定される
ことにより、受光率ｘ〔％〕を検出することで付着量が
制御されている。例えば、必要十分な付着量に対応する
受光率になった時、加湿空気弁４６信号を与えてダクト
３２を閉止させることで付着量が制御される。FIG. 4 shows the results of the above relationship obtained through experiments. In Fig. 4, an arbitrary amount of frost adhesion g (
By determining the light receiving rate X (%) corresponding to g/m'), the adhesion amount is controlled by detecting the light receiving rate x [%]. For example, when the light reception rate corresponds to a necessary and sufficient amount of adhesion, the amount of adhesion is controlled by applying a signal to the humidified air valve 46 to close the duct 32.
次に前記の如く構成された粒状樹脂の混合方法及びその
装置の作用について説明する。Next, the method of mixing granular resin and the operation of the apparatus configured as described above will be explained.
粒状形成された樹脂原料を容器ｌＯに添加する前に、予
め、容器内壁面１０Ａをクーラ１８からの約−６〜−１
Ｏ℃程度の冷却液によって一５℃程度に冷却させる。続
いて、霜層１３を、加湿空気供給器２４によって噴射口
３４から加湿空気を吹込ませ容器内壁面１０Ａに形成さ
せる。Before adding the granular resin raw material to the container IO, the inner wall surface 10A of the container is heated to about -6 to -1 from the cooler 18.
It is cooled to about -5°C using a cooling liquid of about 0°C. Subsequently, a frost layer 13 is formed on the inner wall surface 10A of the container by blowing humidified air from the injection port 34 by the humidified air supply device 24.
該霜Ｐ！１１３の形成量は霜検出器４０によって受光率
が計測されることによって決定される。予め、必要十分
な付着量（受光率）を設定し、その設定値になるまで前
記加湿空気供給器２４による加湿空気の吹込みが行われ
、必要十分な霜が容器内壁面１０Ａに形成された後、粒
状の樹脂を添加し回転羽根１１が回転されることで混合
される。That frost P! The amount of frost 113 formed is determined by measuring the light reception rate by the frost detector 40. A necessary and sufficient adhesion amount (light reception rate) was set in advance, and humidified air was blown by the humidified air supply device 24 until the set value was reached, and necessary and sufficient frost was formed on the inner wall surface 10A of the container. After that, granular resin is added and mixed by rotating the rotary blade 11.
この場合、原料の粒体樹脂同士は撹拌によって摩擦が生
じ、その摩擦熱によって軟化又は熔融され、容器内壁１
０Ａへの粘着性が増加するが、容器内壁１０Ａには霜が
形成されている為樹脂は直接内壁面１０Ａに接触せず、
付着が防止されることになる。In this case, friction occurs between the raw material granular resins due to stirring, and the frictional heat softens or melts the inner wall of the container.
Adhesion to 0A increases, but since frost is formed on the inner wall 10A of the container, the resin does not directly contact the inner wall surface 10A,
Adhesion will be prevented.
尚、前記実施例では、内壁面の温度を一５℃程度とした
が、混合原料となる樹脂の温度が高い場合又は、必要な
混合時間が長い場合等には霜が融解する虞がある。その
場合は、冷却液の温度を低下させ、内壁面の温度を適宜
調節すれば良い。In the above embodiment, the temperature of the inner wall surface was set to about 15° C., but if the temperature of the resin used as the mixed raw material is high or if the required mixing time is long, there is a risk that the frost will melt. In that case, the temperature of the cooling liquid may be lowered and the temperature of the inner wall surface may be adjusted as appropriate.
以上説明したように、本発明に係る粒状樹脂の混合方法
及びその装置によれば、容器の内壁面には霜層が形成さ
れ、壁面を被覆する為、粒状又は粉状の樹脂は直接容器
内壁面に接触することがない。従って、容器の内壁面に
は粒状樹脂等が融昔することがなく、清掃する場合には
、水を吹きかけることで霜を溶かすことができるので、
容器に清掃が可能となる。As explained above, according to the method and device for mixing granular resin according to the present invention, a frost layer is formed on the inner wall surface of the container and covers the wall surface, so that the granular or powdered resin is directly poured into the container. No contact with walls. Therefore, granular resin etc. will not melt on the inner wall surface of the container, and when cleaning, frost can be melted by spraying water.
The container can be cleaned.
また、霜層の形成にあたっては霜付着積検出器を備えた
ので、霜の形成を必要十分な量に制御できる。Furthermore, since a frost accumulation detector is provided to form a frost layer, the formation of frost can be controlled to a necessary and sufficient amount.
第１図は本発明に係る粒状樹脂の混合装置の一実施例を
示す概略構造図、第２図及び第３図は本発明に係る粒状
樹脂の混合装置における反射光受光センサーの光照射及
び受光を示す説明図、第４図は本発明に係る粒状樹脂の
混合装置における霜付着量と受光率を示す説明図である
。
１０・・・容器、 ＩＯＡ・・・内壁面、 １２・・
・壁内、１６・・・貯留タンク、 １８・・・冷却ポ
ンプ、 ２０・・・クーラー ３０・・・加湿空気
供給器、 ３４・・・噴射口、 ４０・・・霜検出器
、 ４２・・・発光素子、４４・・・受光素子、 ４
６・・・加湿空気弁。
出願人 日立プラント建設株式会社FIG. 1 is a schematic structural diagram showing an embodiment of a granular resin mixing device according to the present invention, and FIGS. 2 and 3 show light irradiation and light reception by a reflected light receiving sensor in the granular resin mixing device according to the present invention. FIG. 4 is an explanatory diagram showing the frost adhesion amount and light reception rate in the granular resin mixing device according to the present invention. 10... Container, IOA... Inner wall surface, 12...
・In the wall, 16...Storage tank, 18...Cooling pump, 20...Cooler 30...Humidified air supply device, 34...Injection port, 40...Frost detector, 42... - Light emitting element, 44... Light receiving element, 4
6... Humidifying air valve. Applicant Hitachi Plant Construction Co., Ltd.
Claims (3)
で混合する粒状樹脂の混合方法に於いて、前記容器の内
壁面に霜を形成させた状態で粒状樹脂を混合することを
特徴とする粒状樹脂の混合方法。(1) A granular resin mixing method in which granular resins or granular resins and additives are mixed in a container, characterized in that the granular resins are mixed with frost formed on the inner wall surface of the container. How to mix granular resin.
内に高湿度の空気を噴出させて、内壁面に霜を形成させ
、該霜の付着量を検出すると共に、その付着量を制御す
ることを特徴とする請求項（１）の粒状樹脂の混合方法
。(2) Cool the inner wall surface of the container to below 0°C, and blow out high-humidity air into the container to form frost on the inner wall surface, detect the amount of frost adhesion, and measure the amount of adhesion. The method for mixing granular resin according to claim 1, characterized in that:
を備えた容器内で混合する粒状樹脂の混合装置に於いて
、 容器壁が中空形成されジャケット構造に構成された容器
と、 前記容器壁の内部に冷却液を送流させる冷却氷供給部と
、 容器内に高湿度の空気を噴出させる加湿空気噴射部と、 前記内壁面近傍に設けられた反射光受光センサーによる
霜検出部を有し、前記加湿空気噴射部を制御する機能を
有した検出制御部と、 から成る粒状樹脂の混合装置。(3) In a granular resin mixing device for mixing granular resins or granular resins and additives in a container equipped with a stirring section, the container has a jacket structure with a hollow container wall; and the container. It has a cooling ice supply section that sends cooling liquid inside the wall, a humidified air injection section that blows out highly humid air into the container, and a frost detection section that uses a reflected light receiving sensor provided near the inner wall surface. and a detection control section having a function of controlling the humidified air injection section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63290486A JP2591118B2 (en) | 1988-11-17 | 1988-11-17 | Method and apparatus for mixing granular resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63290486A JP2591118B2 (en) | 1988-11-17 | 1988-11-17 | Method and apparatus for mixing granular resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02136209A true JPH02136209A (en) | 1990-05-24 |
| JP2591118B2 JP2591118B2 (en) | 1997-03-19 |
Family
ID=17756644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63290486A Expired - Lifetime JP2591118B2 (en) | 1988-11-17 | 1988-11-17 | Method and apparatus for mixing granular resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2591118B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0453445U (en) * | 1990-09-13 | 1992-05-07 | ||
| JP2004234006A (en) * | 2003-01-31 | 2004-08-19 | Leica Microsystems (Schweiz) Ag | Microscope having illumination system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01232003A (en) * | 1988-03-14 | 1989-09-18 | Hitachi Plant Eng & Constr Co Ltd | Mixing of granular resin and its device |
-
1988
- 1988-11-17 JP JP63290486A patent/JP2591118B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01232003A (en) * | 1988-03-14 | 1989-09-18 | Hitachi Plant Eng & Constr Co Ltd | Mixing of granular resin and its device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0453445U (en) * | 1990-09-13 | 1992-05-07 | ||
| JP2004234006A (en) * | 2003-01-31 | 2004-08-19 | Leica Microsystems (Schweiz) Ag | Microscope having illumination system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2591118B2 (en) | 1997-03-19 |
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