JPH08170289A - Method and device for selecting waste paper pulp - Google Patents
Method and device for selecting waste paper pulpInfo
- Publication number
- JPH08170289A JPH08170289A JP31142094A JP31142094A JPH08170289A JP H08170289 A JPH08170289 A JP H08170289A JP 31142094 A JP31142094 A JP 31142094A JP 31142094 A JP31142094 A JP 31142094A JP H08170289 A JPH08170289 A JP H08170289A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- screen plate
- reject
- main screen
- disaggregation
- 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
- 239000010893 paper waste Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 15
- 229920001131 Pulp (paper) Polymers 0.000 title claims description 29
- 239000002994 raw material Substances 0.000 claims abstract description 92
- 239000013055 pulp slurry Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000010790 dilution Methods 0.000 claims description 9
- 239000012895 dilution Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000002351 wastewater Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 description 11
- 239000000835 fiber Substances 0.000 description 5
- 239000000123 paper Substances 0.000 description 5
- 238000012216 screening Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Filtration Of Liquid (AREA)
- Paper (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、紙パルプ工業，ファイ
バ−ボ−ド工業等の古紙パルプを原料とする工業におけ
る、原料の異物分離および未離解古紙の解繊を行なう方
法および装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for separating foreign materials from raw materials and defibrating unwounded waste paper in industries using waste paper pulp as a raw material, such as the pulp and paper industry and the fiber board industry. Is.
【０００２】[0002]
【従来技術】古紙パルプを原料とする工業において、古
紙原料を再生利用するためには、回収過程で混入するプ
ラスチック、ビニール紐や雑誌等の背糊など多様な異物
を分離除去する必要がある。一般的な回収古紙に含まれ
る再利用不可能な異物の重量比率は、１〜３％であり、
これらの異物をより選択的に分離除去すること、および
古紙の再生利用にかかるコストのうち原料費の占める割
合は非常に高いため、原料の収率を上げることが求めら
れている。2. Description of the Related Art In the industry where waste paper pulp is used as a raw material, in order to recycle the waste paper raw material, it is necessary to separate and remove various foreign substances such as plastics, vinyl strings, spine glue of magazines and the like mixed in the recovery process. The weight ratio of non-reusable foreign substances contained in general recovered waste paper is 1 to 3%,
Since the ratio of the raw material cost to the cost of separating and removing these foreign substances more selectively and the cost of recycling the waste paper is very high, it is required to increase the raw material yield.
【０００３】一般に、異物の大きさがパルプ繊維よりも
大きな場合や異物の形状がパルプ繊維と著しく異なる場
合には、スクリーンと呼ばれる装置を用いてこれらの異
物を除去している。スクリーン装置としては、内部に小
さな開口を多数設けたストレーナを有する密閉加圧式の
ものが広く利用されているが、その異物除去率は、スク
リ−ンのリジェクト率（ストレーナを通過しない原料の
入口原料に対する量的割合）と大きな関係を持ってい
る。Generally, when the size of the foreign matter is larger than that of the pulp fiber or when the shape of the foreign matter is significantly different from that of the pulp fiber, the foreign matter is removed by using a device called a screen. As the screen device, a closed pressurizing type having a strainer having a large number of small openings inside is widely used, but the foreign matter removal rate is the reject rate of the screen (the raw material inlet material that does not pass through the strainer. Has a large relationship with
【０００４】図８に示すように、リジェクト率を高くす
ると異物除去率は向上するが、リジェクト率を低くする
と異物除去率は低下する。つまり、通常のスクリ−ンで
リジェクト率を低くしようとすると、スクリ−ンプレ−
ト表面が詰ったり、リジェクト濃度が高くなってリジェ
クトバルブに詰りを生じたりする。また、何とか詰らせ
ずに運転できたとしても、リジェクト率を絞り過ぎると
スクリ−ンの異物除去率は悪くなるため良い精選効果を
得ることができない。As shown in FIG. 8, when the reject rate is increased, the foreign matter removal rate is improved, but when the reject rate is decreased, the foreign matter removal rate is decreased. In other words, if you try to lower the reject rate with a normal screen,
The valve surface may become clogged, or the reject concentration may become high and the reject valve may become clogged. Even if the engine can be operated without clogging somehow, if the reject rate is excessively reduced, the foreign matter removal rate of the screen will be poor, and a good selection effect cannot be obtained.
【０００５】したがって、ある程度リジェクトを多くし
ないと、異物の少ないパルプを得ることはできないが、
リジェクトを多くするということは、同時に原料の収率
が低くなってしまうことを意味している。そこで、一般
にスクリ−ン装置を利用して異物の分離除去する場合、
それ以上リジェクトを増やしても異物除去率に対して影
響が少なくなる２０〜２５％のリジェクト率を選び、そ
のリジェクトを再処理する多次カスケ−ドフローと呼ば
れるフローを採用し、システム全体でリジェクト率を下
げることを可能としている。Therefore, if the rejects are not increased to some extent, it is not possible to obtain pulp containing few foreign matters,
Increasing the number of rejects means that the yield of raw materials is also low. Therefore, in general, when using a screen device to separate and remove foreign matter,
Even if the number of rejects is increased further, the influence on the foreign matter removal rate will be lessened. A reject rate of 20 to 25% is selected, and a flow called a multi-order cascade flow is adopted to reprocess the rejects. It is possible to lower.
【０００６】また、スクリーン工程に送り込まれるパル
プスラリー中には多くの未離解原料が含まれているが、
未離解原料はパルプ繊維と比べて大きく形状も異なるた
め、スクリーン装置内においては異物と同様な挙動を示
す。しかし、未離解原料は解繊すれば全く良質な原料で
あるため、これを分離除去してしまっては、収率の向上
を図ることができない。[0006] In addition, the pulp slurry sent to the screen process contains a large amount of undisintegrated raw materials,
Since the undisaggregated raw material has a shape greatly different from that of pulp fiber, it behaves like foreign matter in the screen device. However, since the undisintegrated raw material is a very good raw material if it is defibrated, it is impossible to improve the yield if it is separated and removed.
【０００７】そこで、一般的なスクリーンシステムで
は、離解機を設置し、これらの未離解原料を解繊してい
る。また、離解機は、解繊に要する動力を有効に生かす
ため、スクリーンのリジェクトラインに組み込まれるこ
とが多い。図９に最も一般的なカスケ−ドフロ−を示
す。Therefore, in a general screen system, a disintegrator is installed to disintegrate these undisintegrated raw materials. In addition, the disintegrator is often incorporated in the reject line of the screen in order to effectively use the power required for disentanglement. FIG. 9 shows the most common cascade flow.
【０００８】通常、多次カスケ−ドフローを利用したス
クリ−ンシステムでは、比較的粗大な異物を除去する粗
選ステージＡと、さらに細かな異物を除去する精選ステ
ージＢとに分かれている。粗選ステージＡにおいては、
１次スクリ−ンａのリジェクトを離解機ｈで離解した
後、２次スクリ−ンｂで処理し、そのアクセプトを１次
スクリ−ンａのアクセプトと合流させて精選ステージＢ
へ送る。また、２次スクリ−ンｂのリジェクトは、３次
スクリ−ンｃで処理し、そのアクセプトは２次スクリ−
ンｂに戻し、３次スクリ−ンｃのリジェクトのみを系外
に排出する。Normally, a screen system utilizing a multi-order cascading flow is divided into a coarse selection stage A for removing relatively coarse foreign substances and a fine selection stage B for removing finer foreign substances. In the rough selection stage A,
The reject of the primary screen a is disintegrated by the disintegrator h and then treated by the secondary screen b, and the accept is merged with the accept of the primary screen a to select stage B.
Send to. Also, the reject of the secondary screen b is processed by the tertiary screen c, and its accept is the secondary screen.
Then, only the reject of the third screen c is discharged to the outside of the system.
【０００９】精選ステージＢにおいては、粗選ステージ
Ａからのアクセプトを１次スクリ−ンｄで処理し、その
リジェクトを２次スクリ−ンｅで処理し、そのアクセプ
トを１次スクリ−ンｄのアクセプトと合流させて本シス
テムのアクセプトとして排出される。また、２次スクリ
−ンｅのリジェクトは、離解機ｉで離解した後、３次ス
クリ−ンｆで処理し、そのアクセプトを２次スクリ−ン
ｅへ戻し、３次スクリ−ンｆのリジェクトを４次スクリ
−ンｇで処理し、そのアクセプトは３次スクリ−ンｆに
戻され、４次スクリ−ンｇのリジェクトのみを系外に排
出する。In the selection stage B, the accept from the coarse selection stage A is processed by the primary screen d, the reject is processed by the secondary screen e, and the accept is processed by the primary screen d. It is merged with accept and discharged as accept of this system. Also, the reject of the secondary screen e is disintegrated by the disintegrator i, processed by the tertiary screen f, and the accept is returned to the secondary screen e and the reject of the tertiary screen f. Is processed by the fourth screen g, and the accept is returned to the third screen f, and only the reject of the fourth screen g is discharged out of the system.
【００１０】[0010]
【発明が解決しようとする課題】以上述べたように、カ
スケ−ドするスクリ−ンの数を多くするほど精選度と収
率を向上させることができる反面、設備規模が大きくな
ること、コストが高くなること、上記スクリーンシステ
ムを運転するための動力が大きくなることなどの欠点を
生じる。As described above, as the number of screens to be cascaded is increased, the selectivity and the yield can be improved, but on the other hand, the equipment scale becomes large and the cost becomes low. There are drawbacks such as high cost and high power for operating the screen system.
【００１１】係る問題を解決するために、本発明者ら
は、特願平５−２８４２２５にて、一台のスクリ−ンに
スクリ−ン部と離解部とを持たせ、さらに、離解された
リジェクトを希釈した後スクリ−ン部に循環することに
より、異物の除去効率および収率のアップと省スペ−
ス，低コスト，簡便なシステムコントロ−ルとを両立さ
せることを可能にする古紙パルプの選別方法および装置
を提案した。In order to solve such a problem, the inventors of the present invention, in Japanese Patent Application No. 5-284225, gave one screen a screen part and a disaggregation part, and further disaggregated. By diluting the rejects and circulating them in the screen part, the removal efficiency and yield of foreign substances are improved and the space is saved.
We proposed a method and device for sorting used paper pulp that enables both compatibility with low cost, low cost, and simple system control.
【００１２】しかし、上記発明は、スクリーンシステム
の精選ステージに利用する場合には、非常に大きな効果
を有するが、粗選ステージに利用する場合には、装置内
部の循環部に例えば紐状の異物などがひっかかり、処理
能力が低下してしまう。However, the above-mentioned invention has a very great effect when it is used in the screening stage of the screen system, but when it is used in the rough selection stage, for example, a string-like foreign substance is circulated in the circulation part inside the apparatus. Etc. will be caught and the processing capacity will decrease.
【００１３】[0013]
【課題を解決するための手段】上述した課題を解決する
ために、請求項１の発明は、原料入口とアクセプト原料
出口とリジェクト出口とを有する略円筒状のケ−シング
と、ケ−シング内面との間で空間を形成するように同心
状に固定される円筒状の主スクリ−ンプレ−トと、主ス
クリ−ンプレ−トのリジェクト出口側に隣接して同心状
に設けられる環状の離解用ステ−タと、離解用ステ−タ
と離間してかつケ−シング内面との間で空間を形成する
ように固定される補助スクリ−ンプレ−トと、ケ−シン
グの中心線を回転中心として回転駆動されるロ−タとを
備えてなり、ケ−シング内は、原料入口と主スクリ−ン
プレ−ト内側の空間とにそれぞれ連通する入口室と、主
スクリ−ンプレ−ト外側に配設されアクセプト原料出口
に連通するアクセプト室と、リジェクト出口に連通する
リジェクト室と、補助スクリ−ンプレ−ト外側に配設さ
れる循環室とが区画形成されており、ロ−タは、主スク
リ−ンプレ−トに対峙して設けられ主スクリ−ンの目詰
りを防ぐ主スクレ−パブレ−ドと、離解用ステ−タに対
峙して設けられる離解用ロ−タと、補助スクリ−ンプレ
−トに対峙して設けられ補助スクリ−ンの目詰りを防ぐ
補助スクレ−パブレ−ドとを有するとともに、循環室側
に開口を有する循環路が設けられ、循環路の周壁には主
スクリ−ンプレ−トのに向かって補助スクリ−ンプレ−
トを通過した原料を流出させるべく循環口が穿設されて
おり、離解用ステ−タおよび離解用ロ−タは、対峙する
面がともにリジェクト室に向って拡径して形成されてい
ることを特徴とする古紙パルプの選別装置である。In order to solve the above-mentioned problems, the invention of claim 1 provides a substantially cylindrical casing having a raw material inlet, an accept raw material outlet and a reject outlet, and an inner surface of the casing. A cylindrical main screen plate that is concentrically fixed so as to form a space between the main screen and an annular disaggregation provided concentrically adjacent to the reject outlet side of the main screen plate. With the center line of the casing as the center of rotation, the stator, an auxiliary screen plate which is separated from the disaggregation stator and is fixed so as to form a space between the inner surface of the casing and the stator. In the casing, there are provided an inlet chamber communicating with the raw material inlet and a space inside the main screen plate, and an outside of the main screen plate. Access that communicates with the accepted raw material outlet A chamber, a reject chamber communicating with the reject outlet, and a circulation chamber disposed outside the auxiliary screen plate, and the rotor faces the main screen plate. A main scraper blade provided to prevent clogging of the main screen, a disaggregation rotor provided to face the disaggregation stator, and an auxiliary screen provided to face the auxiliary screen plate. A circulation passage having an opening on the side of the circulation chamber is provided in addition to having an auxiliary screen blade to prevent clogging of the screen, and an auxiliary screen is provided on the peripheral wall of the circulation passage toward the main screen plate. -Pre-
A circulation port is formed to let out the raw material that has passed through the reactor, and the disaggregation stator and the disaggregation rotor are formed such that the facing surfaces are both expanded in diameter toward the reject chamber. Is a sorting device for used paper pulp.
【００１４】請求項２の発明は、上記ケーシングには、
リジェクト室に向かって希釈水入口が設けられているこ
とを特徴とする請求項１記載の古紙パルプの選別装置で
ある。請求項３の発明は、上記補助スクリ−ンプレ−ト
が円板状であることを特徴とする請求項１または請求項
２に記載の古紙パルプの選別装置である。According to the invention of claim 2, in the casing,
2. The used paper pulp sorting apparatus according to claim 1, wherein a dilution water inlet is provided toward the reject chamber. A third aspect of the present invention is the used paper pulp sorting apparatus according to the first or second aspect, wherein the auxiliary screen plate has a disk shape.
【００１５】請求項４の発明は、上記補助スクリ−ンプ
レ−トが円筒状であることを特徴とする請求項１または
請求項２に記載の古紙パルプの選別装置である。請求項
５の発明は、上記アクセプト室は、入口室側とリジェク
ト室側の２室に仕切られていることを特徴とする請求項
１ないし請求項４のいずれかに記載の古紙パルプの選別
装置である。A fourth aspect of the present invention is the used paper pulp sorting apparatus according to the first or second aspect, wherein the auxiliary screen plate has a cylindrical shape. The invention according to claim 5 is characterized in that the accept chamber is partitioned into two chambers, an inlet chamber side and a reject chamber side, and the used paper pulp sorting apparatus according to any one of claims 1 to 4. Is.
【００１６】請求項６の発明は、上記スクリーンプレー
トに丸孔ストレーナを利用したことを特徴とする請求項
１ないし請求項５のいずれかに記載の古紙パルプの選別
装置である。請求項７の発明は、上記スクリーンプレー
トにスリットストレーナを利用したことを特徴とする請
求項１ないし請求項５のいずれかに記載の古紙パルプの
選別装置である。A sixth aspect of the present invention is the used paper pulp sorting apparatus according to any one of the first to fifth aspects, wherein a round hole strainer is used for the screen plate. A seventh aspect of the present invention is the used paper pulp sorting apparatus according to any one of the first to fifth aspects, wherein a slit strainer is used for the screen plate.
【００１７】請求項８の発明は、未離解古紙を含む古紙
原料パルプスラリ−を主スクリ−ン部に導入して、主ス
クリ−ンプレ−トを通過する原料と通過しない原料とに
分離し、主スクリ−ンプレ−トを通過する原料はアクセ
プトとして次工程に流送され、主スクリ−ンプレ−トを
通過しない原料は、主スクリ−ンプレ−トに隣接して設
けられた離解用ステ−タおよび離解用ロ−タからなる離
解部の間隙を通過して、原料中に含まれる未離解古紙が
離解されるとともに昇圧されてリジェクト室に排出さ
れ、さらに補助スクリ−ンプレ−トを通過する原料と通
過しない原料とに分離し、補助スクリ−ンプレ−トを通
過する原料はロ−タに設けられた循環路を通って主スク
リ−ン部に循環され、補助スクリ−ンプレ−トを通過し
ない原料はリジェクトとして系外に排出されることを特
徴とする古紙パルプの選別方法である。According to the invention of claim 8, the pulp pulp slurry for used paper containing undisintegrated used paper is introduced into the main screen part to separate it into the raw material that passes through the main screen plate and the raw material that does not pass through it. The raw material that passes through the screen plate is sent to the next step as an accept, and the raw material that does not pass through the main screen plate is the disaggregation starter and the disassembling stator provided adjacent to the main screen plate. After passing through the gap of the disaggregation section consisting of the disaggregation rotor, the undisaggregated waste paper contained in the raw material is disintegrated and the pressure is increased and discharged into the reject chamber, and the raw material is passed through the auxiliary screen plate. The raw material that is separated into the raw material that does not pass through and passes through the auxiliary screen plate is circulated to the main screen portion through the circulation path provided in the rotor, and the raw material that does not pass through the auxiliary screen plate. Reject It is discharged out of the system as a screening method of the used paper pulp characterized by.
【００１８】請求項９の発明は、上記リジェクト室に排
出された原料を希釈水により希釈することを特徴とする
請求項８記載の古紙パルプの選別方法である。The invention according to claim 9 is the method for selecting used paper pulp according to claim 8, characterized in that the raw material discharged into the reject chamber is diluted with dilution water.
【００１９】[0019]
【作用】上記構成によれば、主スクリ−ンプレ−トを通
過しない未離解原料と紐状などの異物は、下流側の離解
部において未離解原料は離解されて、紐状などの異物は
そのまま通過して、リジェクト室に流入する。離解され
た原料は補助スクリ−ンプレ−トを通過して主スクリ−
ン部に循環され、紐状などの異物は補助スクリ−ンプレ
−トを通過できずリジェクト室から系外に排出される。According to the above construction, the undisaggregated raw material and the string-like foreign matter which do not pass through the main screen plate are disaggregated in the downstream disaggregation section, and the string-like foreign material remains as it is. Pass through and flow into the reject chamber. The disintegrated raw material passes through an auxiliary screen plate and then passes through the main screen.
The foreign matter such as cords, which are circulated in the inlet section, cannot pass through the auxiliary screen plate and are discharged from the reject chamber to the outside of the system.
【００２０】したがって、紐状などの異物が主スクリ−
ン部に循環されることがないため、これらの異物による
ひっかかりや詰りが発生せず、異物の多い粗選ステージ
への利用に適している、Therefore, a foreign matter such as a string is mainly screened.
Since it is not circulated in the inner part, it is not caught or clogged by these foreign substances, making it suitable for use in the rough selection stage with many foreign substances.
【００２１】[0021]
【実施例】以下、本発明の一実施例を添付図面に基づい
て詳述する。図１は本装置の正面断面図であり、図２は
図１におけるＩＩ−ＩＩ断面図である。本図において、
矢印は原料および希釈水の流れを示している。１はケ−
シングで大円筒と小円筒とが重ね合された形状をしてお
り、下端部に原料入口２、胴部中間部にアクセプト原料
出口３、上部にリジェクト出口４および希釈水入口１８
を有している。An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. 1 is a front sectional view of the present apparatus, and FIG. 2 is a II-II sectional view of FIG. In this figure,
Arrows indicate the flow of raw materials and dilution water. 1 is K
It has a shape in which a large cylinder and a small cylinder are overlapped with each other by a singing, and the raw material inlet 2 is at the lower end, the accept raw material outlet 3 is at the middle of the body, and the reject outlet 4 and the dilution water inlet 18 are at the upper part.
have.
【００２２】ケ−シング１内には、ケ−シング１内面と
の間でアクセプト室６を形成するように同心状に円筒状
の主スクリ−ンプレ−ト１０が固定されており、主スク
リ−ンプレ−ト１０の上方に隣接して環状の離解用ステ
−タ１５が同心状に設けられている。さらに、ケ−シン
グ１の中心線を回転中心とし、図示しない駆動装置によ
り回転駆動されるロ−タ１２が設けられている。In the casing 1, a cylindrical main screen plate 10 is concentrically fixed so as to form an accept chamber 6 with the inner surface of the casing 1, and the main screen is provided. An annular disaggregation stator 15 is concentrically provided above and adjacent to the template 10. Further, there is provided a rotor 12 which is rotationally driven by a driving device (not shown) with the center line of the casing 1 as the center of rotation.
【００２３】ケ−シング１内部の下端には、原料入口２
および主スクリ−ンプレ−ト１０内側の空間に連通して
入口室５が形成されている。さらに、ケ−シング１内部
の上部には、リジェクト出口４に連通するリジェクト室
７が区画形成されている。ケ−シング１内部の上端に
は、ケ−シング１内面との間で循環室８を形成するよう
に環状平板の補助スクリ−ンプレ−ト１１が固定され
て、リジェクト室７と循環室８を区画している。A raw material inlet 2 is provided at the lower end inside the casing 1.
An inlet chamber 5 is formed so as to communicate with the space inside the main screen plate 10. Further, a reject chamber 7 communicating with the reject outlet 4 is formed in the upper part inside the casing 1. At the upper end inside the casing 1, an annular screen auxiliary screen plate 11 is fixed so as to form a circulation chamber 8 with the inner surface of the casing 1, and the reject chamber 7 and the circulation chamber 8 are connected. It is partitioned.
【００２４】ロ−タ１２の外周には、主スクリ−ンプレ
−ト１０に対峙して主スクレ−パブレ−ド１３が設けら
れている。主スクレ−パブレ−ド１３は、主スクリ−ン
プレ−ト１０内面との間隙を０．５〜１０mmとされてお
り、主スクリ−ンプレ−ト１０内側で１０〜２５m/sの
高速回転をし、その形状は図５（図１のＶ−Ｖ断面図）
に示すように略円弧状で、スクリ−ンの大きさにより２
〜８枚設けられる。A main screen blade 13 is provided on the outer periphery of the rotor 12 so as to face the main screen plate 10. The main screen blade 13 has a clearance of 0.5 to 10 mm from the inner surface of the main screen plate 10 and rotates at a high speed of 10 to 25 m / s inside the main screen plate 10. , Its shape is shown in FIG. 5 (VV sectional view of FIG. 1)
As shown in Fig.2, it is in the shape of a circular arc, and depending on the size of the screen,
~ 8 sheets are provided.
【００２５】また、主スクレ−パブレ−ド１３と主スク
リ−ンプレ−ト１０とで主スクリ−ン部１９を構成して
いる。ロ−タ１２の中間部には、主スクレ−パブレ−ド
１３に隣接して離解用ロ−タ１６が設けられており、離
解用ロ−タ１６とケ−シング１に固定された離解用ステ
−タ１５とで離解部２０が形成される。The main screen blade 13 and the main screen plate 10 constitute a main screen portion 19. A defibration rotor 16 is provided in the middle of the rotor 12 adjacent to the main scraper blade 13 and is fixed to the defibration rotor 16 and the casing 1 for defibration. The disaggregation part 20 is formed with the stator 15.
【００２６】離解部２０は、例えば図６（イ），（ロ）
および図７（イ），（ロ）に示されるようなものがあ
る。図６に示すように離解用ステ−タ１５および離解用
ロ−タ１６の截頭円錐状の作用面がわずかの間隙を介し
て対峙し、作用面には円周方向に多数のポケットが母線
方向に２段に形成されており、小径側が入口、大径側が
出口となっている。The disaggregation unit 20 is, for example, as shown in FIGS.
7A and 7B. As shown in FIG. 6, the frustoconical working surfaces of the disaggregation stator 15 and the disaggregation rotor 16 face each other with a slight gap therebetween, and a large number of pockets are formed in the circumferential direction on the working surface. It is formed in two steps in the direction, the small diameter side is the inlet and the large diameter side is the outlet.
【００２７】ロ−タ１２の上部には、離解用ロ−タ１６
と離間し、補助スクリ−ンプレ−ト１１に対峙するよう
に補助スクレ−パブレ−ド１４が設けられている。補助
スクレ−パブレ−ド１４は、図２に示すように後退角を
有する翼形状をしており、スクリ−ンの大きさにより２
〜４枚設けられる。また、主スクリ−ンプレ−ト１０に
は、目穴が０．５〜４mm程度の丸孔ストレーナを使用
し、補助スクリ−ンプレ−ト１１には、目穴が１〜５mm
程度の丸孔ストレーナを使用する。ただし、補助スクリ
−ンプレ−ト１１の目穴は主スクリ−ンプレ−ト１０の
目穴よりも大きくなるようにする。A rotor 16 for disaggregation is provided above the rotor 12.
An auxiliary screen blade 14 is provided so as to be spaced apart from the auxiliary screen plate 11 and face the auxiliary screen plate 11. The auxiliary screen blade 14 has a blade shape having a sweepback angle as shown in FIG. 2, and the auxiliary screen blade 14 has a blade shape depending on the size of the screen.
~ 4 sheets are provided. The main screen plate 10 uses a round hole strainer having a hole of about 0.5 to 4 mm, and the auxiliary screen plate 11 has a hole hole of 1 to 5 mm.
Use a round hole strainer of moderate size. However, the eye holes of the auxiliary screen plate 11 are made larger than the eye holes of the main screen plate 10.
【００２８】なお、主スクリ−ンプレ−ト１０にはスリ
ットストレーナを使用して、より精選度を高めることも
できる。ロ−タ１２の内部には、上方が開放された円筒
状の循環路９が設けられ、循環室８と連通し、循環路９
の周壁には、循環口１７が主スクリ−ンプレ−ト１０の
下部に向かって穿設されている。Incidentally, a slit strainer may be used for the main screen plate 10 to further improve the precision. Inside the rotor 12, a cylindrical circulation path 9 whose upper side is opened is provided and communicates with the circulation chamber 8 to form a circulation path 9
A circulation port 17 is formed in the peripheral wall of the main screen plate 10 toward the lower portion thereof.
【００２９】循環口１７はスクリ−ンの大きさによって
２〜８個設けられる。離解部２０の形状は図６に示され
るものに限らず、図７のように、離解用ステ−タ１５′
の内周面およびこれとわずかな間隙を保って回転する離
解用ロ−タ１６′の外周面には、それぞれ原料流れ方向
に従って径が増大する階段状になっており、各段には平
歯車状の歯形が刻まれているものでもよい。Two to eight circulation ports 17 are provided depending on the size of the screen. The shape of the disaggregation unit 20 is not limited to that shown in FIG. 6, but as shown in FIG.
The inner peripheral surface of the rotor and the outer peripheral surface of the disaggregation rotor 16 'that rotates with a slight gap therebetween have a step-like shape in which the diameter increases in accordance with the raw material flow direction. The tooth shape may be engraved.
【００３０】また、主スクリーン部１９において、初期
にスクリーニングされた原料と終期にスクリーニングさ
れた原料とではその精選度などに差があるため、図３に
示すように、アクセプト室６を環状の隔壁２２により、
１次アクセプト室６ａと２次アクセプト室６ｂとに分離
し、それぞれにアクセプト原料出口を設けて、その精選
度などに見合った工程に流送してもよい。Further, in the main screen portion 19, since the raw material screened in the initial stage and the raw material screened in the final stage have a difference in the precision, etc., as shown in FIG. By 22,
Alternatively, the primary accept chamber 6a and the secondary accept chamber 6b may be separated from each other, and an accept raw material outlet may be provided for each of the primary accept chamber 6a and the secondary accept chamber 6b, and the raw material may be sent to a process suitable for the degree of precision.
【００３１】その際、循環する原料は精選度が高いた
め、循環口１７´は２次アクセプト室６ｂ側に穿設す
る。さらに、図４に示すように、補助スクリーン部２１
を構成してもよい。図４において、ケ−シング１内の上
端には、ケ−シング１内面との間でリジェクト室７を形
成するように同心状に円筒状の補助スクリ−ンプレ−ト
１０が固定され、リジェクト室７内に、補助スクリ−ン
プレ−ト１０と対峙するように補助スクレ−パブレ−ド
１４が設けられている。At this time, since the circulating material has a high degree of precision, the circulation port 17 'is formed on the side of the secondary accept chamber 6b. Further, as shown in FIG.
May be configured. In FIG. 4, a cylindrical auxiliary screen plate 10 is concentrically fixed to the upper end of the casing 1 so as to form a reject chamber 7 with the inner surface of the casing 1. Auxiliary screen blade 14 is provided inside 7 so as to face auxiliary screen plate 10.
【００３２】また図示しないが、循環室８には、発砲ス
チロール等の軽質な異物を排出するためのリジェクトノ
ズルを設けてもよい。次に、本発明の一実施例の作用を
図１に基づいて詳述する。原料入口２から供給される未
離解古紙を含む古紙原料パルプスラリ−は、入口室５を
通って主スクリ−ン部１９に導入され、主スクリ−ンプ
レ−ト１０を通過する原料と通過しない原料とに分離さ
れる。Although not shown, the circulation chamber 8 may be provided with a reject nozzle for discharging light foreign matter such as expanded polystyrene. Next, the operation of the embodiment of the present invention will be described in detail with reference to FIG. The waste paper raw material pulp slurry containing undisintegrated waste paper supplied from the raw material inlet 2 is introduced into the main screen portion 19 through the inlet chamber 5, and the raw material that passes through the main screen plate 10 and the raw material that does not pass through it. Is separated into
【００３３】その際、主スクレ−パブレ−ド１３の高速
回転で回転方向後側に発生する負圧により主スクリ−ン
プレ−ト１０内面に集積するパルプのマットを破壊し
て、主スクリ−ンプレ−ト１０の目詰りを防止してい
る。主スクリ−ンプレ−ト１０を通過する原料は、アク
セプト室６に流入し原料出口３からアクセプトとして次
工程に流送される。At this time, the negative pressure generated on the rear side in the rotational direction by the high speed rotation of the main screen blade 13 breaks the pulp mat accumulated on the inner surface of the main screen plate 10 to destroy the main screen plate. -Prevents clogging of the grate 10. The raw material passing through the main screen plate 10 flows into the accept chamber 6 and is sent from the raw material outlet 3 as an accept to the next step.
【００３４】主スクリ−ンプレ−ト１０を通過しない原
料は離解部２０に送り込まれる。この原料中には、プラ
スチック等の除去すべき異物と未離解古紙が集積してい
るが、未離解古紙は、離解部２０においてその作用面お
よびポケットを通過する際に、攪拌乱流により流体剪断
作用を受けて離解（解繊）され、またプラスチック等の
異物は、細分化されずに通過する。The raw material which does not pass through the main screen plate 10 is fed to the disaggregation section 20. In this raw material, foreign matters to be removed such as plastics and undisintegrated waste paper are accumulated. When the undisintegrated waste paper passes through its working surface and pockets in the disaggregation section 20, it is fluid sheared by turbulent stirring. It is disintegrated (defibrated) by the action, and foreign substances such as plastic pass through without being subdivided.
【００３５】さらに、離解部２０は出口が入口より大径
になっているため昇圧機能を有している。したがって、
離解（解繊）された未離解古紙およびプラスチック等の
異物は昇圧されてリジェクト室７に排出される。リジェ
クト室７に排出された原料は、希釈水入口１８から供給
される希釈水によりスクリーニングに適した濃度に希釈
されて、補助スクリ−ン部２１で補助スクリ−ンプレ−
ト１１を通過する原料と通過しない原料とに分離され
る。Furthermore, since the outlet of the disaggregating section 20 has a larger diameter than the inlet, it has a pressure increasing function. Therefore,
The disintegrated (disentangled) undisintegrated waste paper and foreign matter such as plastic are pressurized and discharged into the reject chamber 7. The raw material discharged into the reject chamber 7 is diluted to a concentration suitable for screening by the dilution water supplied from the dilution water inlet 18, and the auxiliary screen part 21 is used for the auxiliary screen plate.
It is separated into a raw material that passes through the belt 11 and a raw material that does not pass through.
【００３６】その際、補助スクレ−パブレ−ド１４の高
速回転で回転方向後側に発生する負圧により補助スクリ
−ンプレ−ト１１内面に集積するパルプのマットを破壊
して、補助スクリ−ンプレ−ト１１の目詰りを防止して
いる。補助スクリ−ンプレ−ト１１を通過する原料には
新たに解繊され回収可能な繊維が含まれており、循環室
８に流入した原料は、離解部２０の昇圧機能により装置
内部に圧力差が生じているため、ロ−タ１２に設けられ
た循環路９を通って循環口１７から主スクリ−ン部１９
に戻される。At this time, the negative pressure generated on the rear side in the rotation direction by the high speed rotation of the auxiliary screen blade 14 destroys the pulp mat accumulated on the inner surface of the auxiliary screen plate 11 to destroy the auxiliary screen blade. -Prevents clogging of grate 11. The raw material passing through the auxiliary screen plate 11 contains fibers that are newly defibrated and can be collected, and the raw material that has flowed into the circulation chamber 8 has a pressure difference inside the device due to the pressurizing function of the disaggregation section 20. Since it has occurred, the main screen portion 19 is passed from the circulation port 17 through the circulation path 9 provided in the rotor 12.
Is returned to.
【００３７】補助スクリ−ンプレ−ト１１を通過しない
原料つまり補助スクリ−ンプレ−ト１１の目穴よりも大
きな異物は、リジェクト室７内を滞留し、リジェクト出
口４からリジェクトとして系外に排出される。次に、図
１に示す実施例の古紙パルプの選別装置を実際の古紙原
料パルプスラリ−の選別に使用した実験デ−タを表１に
示す。Raw materials that do not pass through the auxiliary screen plate 11, that is, foreign substances larger than the eye holes of the auxiliary screen plate 11, remain in the reject chamber 7 and are discharged from the reject outlet 4 to the outside of the system. It Next, Table 1 shows the experimental data obtained by using the used paper pulp sorting apparatus of the embodiment shown in FIG. 1 for the actual sorting of used paper raw material pulp slurry.
【００３８】[0038]
【表１】 この実験では、原料濃度１．８％の段ボ−ル古紙原料を
使用して、従来型スクリ−ンと本発明の古紙パルプの選
別装置（図１に相当）の性能の比較を行なったものであ
る。なお、主スクリ−ンプレートには１．６mm径の丸孔
ストレーナを使用し、補助スクリ−ンプレートには５mm
径の丸孔ストレーナを使用している。[Table 1] In this experiment, the performance of the conventional screen and the waste paper pulp sorting apparatus of the present invention (corresponding to FIG. 1) was compared by using a corrugated roll waste paper raw material having a raw material concentration of 1.8%. Is. A 1.6 mm diameter round hole strainer is used for the main screen plate and 5 mm for the auxiliary screen plate.
A diameter round hole strainer is used.
【００３９】表１において、処理量（Ｔ／Ｄ）は原料の
乾燥重量、リジェクト率（％）は入口原料乾燥総重量に
対するリジェクト原料乾燥総重量の割合、未離解含有率
（％は単位乾燥重量当りの未離解分の乾燥重量、未離解
含有量（Ｔ／Ｄ）は処理原料中の未離解分の乾燥総重
量、未離解減少率（％）は本装置通過後の未離解分の乾
燥総重量減少率をそれぞれ示している。In Table 1, the treated amount (T / D) is the dry weight of the raw material, the reject rate (%) is the ratio of the dry total weight of the reject raw material to the total dry weight of the inlet raw material, and the undisaggregated content rate (% is the unit dry weight) The dry weight of undisaggregated per unit, the content of undisaggregated (T / D) is the total dry weight of undisaggregated components in the treated raw material, and the undisaggregated reduction rate (%) is the total dry amount of undisaggregated components after passing through this device The weight reduction rate is shown respectively.
【００４０】なお、従来型スクリ−ンで未離解分が多少
減少しているが、これはスクリ−ン内で多少の解繊が起
こっていることを示している。実験結果からわかるよう
に、リジェクト率は従来型スクリ−ンに比べて１／５に
なっているにもかかわらず、アクセプト中の未離解分は
同程度となっており、未離解減少率はほぼ２倍になって
いることがわかる。In the conventional screen, the amount of unseparated fibers is slightly reduced, which means that some defibration is occurring in the screen. As can be seen from the experimental results, although the reject rate is 1/5 that of the conventional screen, the undissolved fraction during accepting is about the same, and the undisaggregated decrease rate is almost the same. You can see that it has doubled.
【００４１】本発明の古紙パルプの選別装置は、離解部
２０を内部に有してスクリ−ンリジェクトの解繊を行な
っているのに加えて、リジェクト室７において希釈水を
供給し、スクリ−ニングを適正な濃度で行なっており、
さらにスクリ−ニングされた原料は再循環しているの
で、主スクリ−ン部１９ではリジェクトを２０％以上に
とってもリジェクト出口４から外部に流出するリジェク
ト量を絞ることができ、目詰りを起こさない良好なスク
リ−ン効果とト−タルリジェクト量の減少という矛盾し
た要求を同時に解決している。The used paper pulp sorting apparatus of the present invention has the disaggregation section 20 therein to disintegrate the screen reject, and in addition, the dilution water is supplied in the reject chamber 7 to perform the screening. Is performed at an appropriate concentration,
Furthermore, since the screened raw material is recirculated, the reject amount flowing out from the reject outlet 4 to the outside can be narrowed even if the reject is 20% or more in the main screen part 19 and the clogging does not occur. It simultaneously solves the contradictory requirements of good screen effect and reduction of total reject amount.
【００４２】なお、本発明の古紙パルプの選別方法およ
び装置は、上述の実施例にのみ限定されるものではな
く、本発明の要旨を逸脱しない範囲内において種々変更
を加え得ることは勿論のことであるThe method and apparatus for sorting used paper pulp according to the present invention is not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the scope of the present invention. Is
【００４３】[0043]
【発明の効果】以上、説明したように本発明の古紙パル
プの選別装置によれば以下の効果がある。 （１）選別機能と離解機能を１台の装置で兼用している
ので、スクリ−ンステ−ジの簡略化が可能になり、設備
費および動力費が大幅に節約できる。As described above, according to the used paper sorting apparatus of the present invention, the following effects can be obtained. (1) Since one device has both the sorting function and the disaggregation function, the screen stage can be simplified, and the facility cost and the power cost can be greatly saved.
【００４４】（２）離解部で解繊された原料を回収する
機能を持っているので、リジェクト率を大幅に減少する
ことができ、精選度を高く維持できる。 （３）補助スクリ−ン部により粗大な異物を除去できる
ため、循環流路中にこれらの異物がひっかかることがな
く安定した操業ができる。 （４）主スクリ−ン部に精選工程用のスリットストレー
ナを使用すれば、粗選工程と精選工程を一台の装置に集
約することもできる。(2) Since it has a function of recovering the raw material disintegrated in the disaggregation section, the reject rate can be greatly reduced, and the precision can be kept high. (3) Since the coarse particles can be removed by the auxiliary screen part, stable operation can be performed without the foreign particles being caught in the circulation passage. (4) If a slit strainer for the selection process is used in the main screen section, the rough selection process and the selection process can be integrated into one device.
【図１】本発明の一実施例である古紙パルプ選別装置の
正面断面図である。FIG. 1 is a front sectional view of a used paper pulp sorting apparatus according to an embodiment of the present invention.
【図２】図１におけるＩＩ−ＩＩ断面図である。FIG. 2 is a sectional view taken along line II-II in FIG.
【図３】本発明の他の実施例である古紙パルプ選別装置
の正面断面図である。FIG. 3 is a front sectional view of a used paper pulp sorting apparatus that is another embodiment of the present invention.
【図４】本発明の他の実施例である古紙パルプ選別装置
の正面断面図である。FIG. 4 is a front sectional view of a used paper pulp sorting apparatus that is another embodiment of the present invention.
【図５】図１におけるＶ−Ｖ断面図である。5 is a sectional view taken along line VV in FIG.
【図６】（イ）は第一発明における離解部の平面図であ
る。（ロ）は（イ）の断面図である。FIG. 6A is a plan view of the disaggregation unit in the first invention. (B) is a sectional view of (A).
【図７】（イ）は離解部の他の実施例の平面図である。
（ロ）は（イ）の断面図である。FIG. 7A is a plan view of another embodiment of the disaggregation unit.
(B) is a sectional view of (A).
【図８】従来型スクリ−ンにおけるリジェクト率と異物
除去率の関係を表したグラフである。FIG. 8 is a graph showing the relationship between the reject rate and the foreign matter removal rate in a conventional screen.
【図９】従来のスクリ−ニング工程のフロ−シ−トであ
る。FIG. 9 is a flow chart of a conventional screening process.
１ ケ−シング ２ 原料入口 ３ アクセプト原料出口 ４ リジェクト出口 ５ 入口室 ６ アクセプト室 ７ リジェクト室 ８ 循環室 ９ 循環路 １０ 主スクリ−ンプレート １１ 補助スクリ−ンプレート １２ ロ−タ １３ 主スクレ−パブレ−ド １４ 補助スクレ−パブレ−ド １５ 離解用ステ−タ １６ 離解用ロ−タ １７ 循環口 １８ 希釈水入口 １９ 主スクリ−ン部 ２０ 離解部 ２１ 補助スクリ−ン部 ２２ 隔壁 1 Casing 2 Raw Material Inlet 3 Accepted Raw Material Outlet 4 Reject Outlet 5 Inlet Room 6 Accept Room 7 Reject Room 8 Circulation Room 9 Circulation Path 10 Main Screen Plate 11 Auxiliary Screen Plate 12 Rotor 13 Main Scraper Blur -Aid 14 Auxiliary scraper blade 15 Disaggregation stator 16 Disaggregation rotor 17 Circulation port 18 Diluting water inlet 19 Main screen part 20 Disaggregation part 21 Auxiliary screen part 22 Partition wall
Claims (9)
クト出口とを有する略円筒状のケ−シングと、ケ−シン
グ内面との間で空間を形成するように同心状に固定され
る円筒状の主スクリ−ンプレ−トと、主スクリ−ンプレ
−トのリジェクト出口側に隣接して同心状に設けられる
環状の離解用ステ−タと、離解用ステ−タと離間してか
つケ−シング内面との間で空間を形成するように固定さ
れる補助スクリ−ンプレ−トと、ケ−シングの中心線を
回転中心として回転駆動されるロ−タとを備えてなり、 ケ−シング内は、原料入口と主スクリ−ンプレ−ト内側
の空間とにそれぞれ連通する入口室と、主スクリ−ンプ
レ−ト外側に配設されアクセプト原料出口に連通するア
クセプト室と、リジェクト出口に連通するリジェクト室
と、補助スクリ−ンプレ−ト外側に配設される循環室と
が区画形成されており、 ロ−タは、主スクリ−ンプレ−トに対峙して設けられ主
スクリ−ンの目詰りを防ぐ主スクレ−パブレ−ドと、離
解用ステ−タに対峙して設けられる離解用ロ−タと、補
助スクリ−ンプレ−トに対峙して設けられ補助スクリ−
ンの目詰りを防ぐ補助スクレ−パブレ−ドとを有すると
ともに、循環室側に開口を有する循環路が設けられ、循
環路の周壁には主スクリ−ンプレ−トに向かって補助ス
クリ−ンプレ−トを通過した原料を流出させるべく循環
口が穿設されており、 離解用ステ−タおよび離解用ロ−タは、対峙する面がと
もにリジェクト室に向って拡径して形成されていること
を特徴とする古紙パルプの選別装置。1. A substantially cylindrical casing having a raw material inlet, an accept raw material outlet, and a reject outlet, and a cylindrical main body fixed concentrically so as to form a space between the inner surface of the casing and the casing. A screen plate, an annular disaggregation stator provided concentrically adjacent to the reject exit side of the main screen plate, and a casing inner surface spaced from the disaggregation stator. It is equipped with an auxiliary screen plate fixed so as to form a space between them, and a rotor driven to rotate about the center line of the casing as a center of rotation. An inlet chamber communicating with the inlet and the space inside the main screen plate, an accept chamber communicating with the accept raw material outlet arranged outside the main screen plate, and a reject chamber communicating with the reject outlet, Auxiliary screen A circulation chamber disposed outside the plate is defined, and the rotor is provided so as to face the main screen plate and prevents the main screen from clogging. And a rotor for disaggregation provided facing the disintegration stator, and an auxiliary screen provided opposite to the auxiliary screen plate.
A circulation passage having an opening on the side of the circulation chamber is provided with an auxiliary screen blade for preventing clogging of the screen, and an auxiliary screen plate is provided on the peripheral wall of the circulation path toward the main screen plate. A circulation port is bored to allow the raw material that has passed through the outlet to flow out, and the disaggregation stator and the disaggregation rotor are formed such that the facing surfaces are both expanded toward the reject chamber. A sorting device for used paper pulp.
かって希釈水入口が設けられていることを特徴とする請
求項１記載の古紙パルプの選別装置。2. The used paper pulp sorting apparatus according to claim 1, wherein the casing is provided with a dilution water inlet toward the reject chamber.
あることを特徴とする請求項１または請求項２に記載の
古紙パルプの選別装置。3. The used paper pulp sorting apparatus according to claim 1, wherein the auxiliary screen plate has a disk shape.
あることを特徴とする請求項１または請求項２に記載の
古紙パルプの選別装置。4. The used paper pulp sorting apparatus according to claim 1, wherein the auxiliary screen plate has a cylindrical shape.
クト室側の２室に仕切られていることを特徴とする請求
項１ないし請求項４のいずれかに記載の古紙パルプの選
別装置。5. The used paper pulp sorting apparatus according to claim 1, wherein the accept chamber is divided into two chambers, an inlet chamber side and a reject chamber side.
ーナを利用したことを特徴とする請求項１ないし請求項
５のいずれかに記載の古紙パルプの選別装置。6. The used paper pulp sorting apparatus according to claim 1, wherein a round hole strainer is used for the main screen plate.
トレーナを利用したことを特徴とする請求項１ないし請
求項５のいずれかに記載の古紙パルプの選別装置。7. The used paper pulp sorting apparatus according to claim 1, wherein a slit strainer is used for the main screen plate.
−を主スクリ−ン部に導入して、主スクリ−ンプレ−ト
を通過する原料と通過しない原料とに分離し、 主スクリ−ンプレ−トを通過する原料はアクセプトとし
て次工程に流送され、 主スクリ−ンプレ−トを通過しない原料は、主スクリ−
ンプレ−トに隣接して設けられた離解用ステ−タおよび
離解用ロ−タからなる離解部の間隙を通過して、原料中
に含まれる未離解古紙が離解されるとともに昇圧されて
リジェクト室に排出され、 さらに補助スクリ−ンプレ−トを通過する原料と通過し
ない原料とに分離し、 補助スクリ−ンプレ−トを通過する原料はロ−タに設け
られた循環路を通って主スクリ−ン部に循環され、 補助スクリ−ンプレ−トを通過しない原料はリジェクト
として系外に排出されることを特徴とする古紙パルプの
選別方法。8. A waste paper raw material pulp slurry containing undisintegrated waste paper is introduced into a main screen section to separate into a raw material that passes through a main screen plate and a raw material that does not pass through the main screen plate. The raw material that passes through is sent to the next step as an accept, and the raw material that does not pass through the main screen plate is the main screen.
The unreacted waste paper contained in the raw material is disintegrated and pressurized to pass through the gap between the disaggregation section and the disaggregation rotor provided adjacent to the plate, and the pressure is increased in the reject chamber. The raw material passing through the auxiliary screen plate is separated into the raw material that passes through the auxiliary screen plate and the raw material that does not pass through the auxiliary screen plate, and the raw material that passes through the auxiliary screen plate passes through the circulation path provided in the rotor. The method for sorting used paper pulp is characterized in that the raw materials that are circulated in the wastewater section and do not pass through the auxiliary screen plate are discharged outside the system as rejects.
釈水により希釈することを特徴とする請求項８記載の古
紙パルプの選別方法。9. The method for selecting used paper pulp according to claim 8, wherein the raw material discharged into the reject chamber is diluted with dilution water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31142094A JP3360773B2 (en) | 1994-12-15 | 1994-12-15 | Waste paper pulp sorting method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31142094A JP3360773B2 (en) | 1994-12-15 | 1994-12-15 | Waste paper pulp sorting method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08170289A true JPH08170289A (en) | 1996-07-02 |
| JP3360773B2 JP3360773B2 (en) | 2002-12-24 |
Family
ID=18016990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31142094A Expired - Fee Related JP3360773B2 (en) | 1994-12-15 | 1994-12-15 | Waste paper pulp sorting method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3360773B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5798025A (en) * | 1997-03-13 | 1998-08-25 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Apparatus for screening waste paper pulp |
| WO2012004887A1 (en) * | 2010-07-09 | 2012-01-12 | フォイト パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング | Screen device |
| JP2017101353A (en) * | 2015-12-02 | 2017-06-08 | 相川鉄工株式会社 | Screen device for papermaking |
-
1994
- 1994-12-15 JP JP31142094A patent/JP3360773B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5798025A (en) * | 1997-03-13 | 1998-08-25 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Apparatus for screening waste paper pulp |
| WO2012004887A1 (en) * | 2010-07-09 | 2012-01-12 | フォイト パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング | Screen device |
| CN102985611A (en) * | 2010-07-09 | 2013-03-20 | 沃依特专利有限责任公司 | Screen device |
| JP2017101353A (en) * | 2015-12-02 | 2017-06-08 | 相川鉄工株式会社 | Screen device for papermaking |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3360773B2 (en) | 2002-12-24 |
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