JPH04333688A - Material forwarding band for paper-making machine - Google Patents

Material forwarding band for paper-making machine

Info

Publication number
JPH04333688A
JPH04333688A JP3174608A JP17460891A JPH04333688A JP H04333688 A JPH04333688 A JP H04333688A JP 3174608 A JP3174608 A JP 3174608A JP 17460891 A JP17460891 A JP 17460891A JP H04333688 A JPH04333688 A JP H04333688A
Authority
JP
Japan
Prior art keywords
material delivery
flow
delivery zone
paper
pulp suspension
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
Application number
JP3174608A
Other languages
Japanese (ja)
Other versions
JP3301623B2 (en
Inventor
Helmut Heinzmann
ハインツマン　ヘルマット
Udo Heuser
ハウザ−　ウド
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JM Voith GmbH
Original Assignee
JM Voith GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6408700&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPH04333688(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by JM Voith GmbH filed Critical JM Voith GmbH
Publication of JPH04333688A publication Critical patent/JPH04333688A/en
Application granted granted Critical
Publication of JP3301623B2 publication Critical patent/JP3301623B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D21F1/028—Details of the nozzle section
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D21F1/026—Details of the turbulence section
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/08—Regulating consistency

Abstract

PURPOSE: To provide a stock delivery channel for paper-making machine, in which an introducing device having plural holes or passages for pulp suspension and a distributing device having a feeding passage having a feed-separating channel for separating the pulp suspension and a means for adjusting the pulp density of the pulp suspension over the all operating sections and for distributing the supplied pulp suspension over the all operating sections of the paper-making machine are provided. CONSTITUTION: (a) The stock delivery channel is divided into each of sections with separating walls over the whole body. (b) In each section, at least one supplying tube for supplying partial stream (sectional stream), is provided. (c) One set of mixer is connected with each supplying tube. (d) In the mixer, at least two connecting parts for introducing the pulp suspension stream having desired operating parameters (charging quantity, pulp density fiber quality), are provided.

Description

【発明の詳細な説明】[Detailed description of the invention]

【０００１】0001

【産業上の利用分野】本発明は、請求項１の前文に述べ
た製紙機の材料送出帯に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a material delivery belt for a papermaking machine as defined in the preamble of claim 1.

【０００２】0002

【従来の技術】このような材料送出帯（Ｓｔｏｆｆａｕ
ｆｌａｕｆ）は、ＤＥ３５１４５５４により知られてい
る。BACKGROUND OF THE INVENTION Such a material delivery belt (Stoffau
flauf) is known from DE 3514554.

【０００３】このような材料送出帯はパルプ懸濁液を遅
くとも送出分離前に均質化し、物質密度（単位体積あた
りの繊維質量）が材料送出帯の全幅にわたって一定とな
り、また繊維の方向がそろうようにする。この２つは完
成した紙がロール幅全体にわたって、坪量ならびに厚さ
が一定となり、また平らで巻込み時に傾きがないように
するための重要な前提条件である。[0003] Such a material delivery zone homogenizes the pulp suspension at the latest before the delivery separation, so that the material density (fiber mass per unit volume) is constant over the entire width of the material delivery zone and the fiber direction is aligned. Make it. These two are important prerequisites for ensuring that the finished paper has a constant basis weight and thickness across the width of the roll, and that it is flat and does not tilt during winding.

【０００４】製紙機を作動する場合、上記の２つの条件
を妨げる多くの妨害因子がある。この妨害因子は、たと
えば、温度変化、圧力変動、製造許容範囲などである。[0004] When operating a paper machine, there are many interfering factors that interfere with the above two conditions. These interfering factors are, for example, temperature changes, pressure fluctuations, manufacturing tolerances, etc.

【０００５】最初にあげたドイツ特許明細書は、ここに
述べた問題を取扱っている。材料送出帯の幅全体にわた
って物質密度を一定に保ち、また繊維の方向づけを行い
、送出経路内で横方向の流れが起こらないようにするこ
とはこの特許ですでに知られている。この場合、とくに
物質密度を局所的に変える、つまり必要に応じて一定の
箇所で物質密度を変えることが提案されている。しかし
、これをどのような方法で行うべきかについては述べら
れていない。The German patent specification mentioned first deals with the problem mentioned here. It is already known from this patent to keep the material density constant over the width of the material delivery zone and also to orient the fibers so that no lateral flow occurs in the delivery path. In this case, it is proposed in particular to vary the material density locally, that is to say to vary the material density at certain locations as required. However, it does not say how this should be done.

【０００６】さらに、たとえば上縁を回転し、または曲
げるため、ねじ付きスピンドルによって送出分離帯の幅
を変更することも知られている。たとえばＤＥ−ＰＳ２
９４２９６６または　ＤＥ−ＯＳ３５３５８４９　参照
。これによって、懸濁液の装入量を局所的に変化させる
ことができる。同時に、流れ方向を局所的に影響を与え
、これによって繊維の方向づけを行う。局所的に分離帯
をせまくすることによって狭い箇所で繊維に送出分離帯
の他の箇所とは別の流れ方向を与える。すなわち、この
ようないわゆる置換の法則によって物質密度を材料送出
帯の幅全体にわたって均等にすることができるが、繊維
の方向は再び妨害される。そこでこの２つのパラメータ
、すなわち物質密度と繊維方向を互いに独立して調整で
きることが望ましい。Furthermore, it is also known to vary the width of the delivery divider by means of a threaded spindle, for example in order to rotate or bend the upper edge. For example DE-PS2
See 942966 or DE-OS3535849. This allows the suspension charge to be locally varied. At the same time, the direction of flow is locally influenced, thereby orienting the fibers. By narrowing the separator locally, the fibers are given a different flow direction at the narrow point than at other parts of the delivery separator. Thus, although such a so-called displacement law makes it possible to equalize the material density over the width of the material delivery zone, the fiber direction is again disturbed. Therefore, it is desirable to be able to adjust these two parameters, namely material density and fiber direction, independently of each other.

【０００７】本発明者は、最初にあげたドイツ特許明細
書は基本的に正しい道を示していると思う。さらにこの
特許は、２つのパラメータ、つまり物質密度と繊維方向
を実際的な、また許容できるやり方で互いに個別に調整
できるような材料送出帯を提供するよう問題を提起して
いる。この問題は請求項１の特徴によって解決すること
ができる。[0007] The inventor believes that the first mentioned German patent specification basically points the way forward. Furthermore, this patent sets out the problem of providing a material delivery zone in which two parameters, material density and fiber orientation, can be adjusted independently of each other in a practical and acceptable manner. This problem can be solved by the features of claim 1.

【０００８】[0008]

【課題を解決するための手段】本発明の基本構想は、既
知の材料送出帯を各区間に区分し、各区に作業パラメー
タ（装入量、物質密度、繊維品質）を単独で調節できる
ような部分流（区分流）を供給することにある。各区間
にそれぞれ区分流ＱＭを供給する。区分流はできれば材
料送出帯の外で分離して誘導し、材料送出帯ではじめて
合流するようにする。各区分流自体は２つの調節流の合
流によって成り立っている。この調節流の混合率によっ
て区分流の特性を最も正確に調節できる。The basic concept of the present invention is to divide a known material delivery zone into sections, each section having its own operating parameters (charging amount, material density, fiber quality) that can be adjusted independently. The purpose is to supply a partial flow. A partial flow QM is supplied to each section. The partial streams should preferably be separated and guided outside the material delivery zone and only join in the material delivery zone. Each section stream itself is made up of the confluence of two regulating streams. The characteristics of the sectional flow can be adjusted most accurately by the mixing ratio of this regulated flow.

【０００９】[0009]

【実施例】以下に実際の例について説明する。用紙ロー
ルの品質管理を行うと、坪量プロフィルがロール幅の一
定の箇所で、目標値から許容できないほどはずれること
が確認される。従って材料送出帯中の懸濁液の物質密度
は、材料送出帯のこの箇所でこれに応じて修正しなくて
はならない。本発明によれば、これは関連区分流の濃度
ＣＭを変えることによって行うことができる。必要な変
更量　ｄＣＭ　は質量バランスから定めることができる
。この結果得られた（修正された）濃度ＣＭは、唯一の
ものであり、調節流の比率　ＱＨ／ＱＬ　だけに依存す
る。修正された値ＣＭは比率調節の基礎として用いられ
、また目標値とする（図１参照）。比率調節によって新
しい調節体積・流れ比率が調節される。この場合ＱＬも
変化する。しかし、混合部分流の流量は一定でなくては
ならないから、調節流量ＱＨは連続方程式によって修正
される。このような調節はまた図　１ａの方式によって
行うことができる。このためには新しい濃度ＣＭのため
の調節流量の目標値変化を計算し、調節装置に与えなく
てはならない。 体積流量調節 材料送出帯では材料送出流中の懸濁液の横方向流れが周
辺流入によって生じることがある。この結果、繊維の方
向が好ましくない影響を受ける。このための原因は材料
送出帯が既知の場合、材料送出帯の幅全体で、体積流量
が異なることにある。[Example] An actual example will be explained below. Quality control of paper rolls reveals that the basis weight profile deviates unacceptably from the target value at certain points across the width of the roll. The material density of the suspension in the material delivery zone must therefore be modified accordingly at this point in the material delivery zone. According to the invention, this can be done by varying the concentration CM of the relevant section stream. The required change amount dCM can be determined from the mass balance. The resulting (corrected) concentration CM is unique and depends only on the regulating flow ratio QH/QL. The corrected value CM is used as the basis for the ratio adjustment and is also the target value (see FIG. 1). The ratio adjustment adjusts the new adjustment volume/flow ratio. In this case, QL also changes. However, since the flow rate of the mixing substream must be constant, the regulated flow rate QH is modified by the continuity equation. Such adjustment can also be done in the manner of Figure 1a. For this purpose, it is necessary to calculate the setpoint change in the regulating flow rate for the new concentration CM and supply it to the regulating device. In the volumetric flow regulating material delivery zone, lateral flow of the suspension in the material delivery stream may be caused by peripheral inflow. As a result, the orientation of the fibers is adversely affected. The reason for this is that when the material delivery zone is known, the volumetric flow rate is different across the width of the material delivery zone.

【００１０】このような調節では、濃度ＣＭは一定であ
る。計算された必要な体積流量ＱＨは理論値として調節
装置に与えられる（図１ａ）。図１ｂの方式によれば２
つの計算した体積流量の値ＱＨとＱＬ　を調節装置に新
しい目標値として与えなくてはならない。応用可能性こ
の方法はすべての種類の材料送出帯（単層、多層、分離
帯のための材料送出帯、防振装置つきまたはなしの長網
抄紙機、一連または二連管群など）に応用できる。 図２−５　　　　　　　　　混合部分流の合計は材料送
出帯への全供給流に対応する。これによって従来の多岐
管を入れかえる。混合機は材料送出帯の外側にある。 図６−１１　　　　　　　　１区間の混合部分流はその
区間の全体流の一部にすぎない。残りの流れは従来のや
り方で供給する。 図６　　　　　　　　　　　混合部分流は第１管群に供
給される。これらは図３ａの分離壁によって流路の一部
に分離される。 図７−８　　　　　　　　　管群（たとえば多孔板）の
間の通路に混合部分流を供給。 図９−１０　　　　　　　　１区間の乱流装入量の、一
列または多重列管への混合部分流の直接供給を示す図。 図１１　　　　　　　　　　ジェット流空間への供給を
示す図。 材料送出帯区間では混合部分流の代わりに、２つの調節
流を供給できる。流入部は２つの流れを互いに混合でき
るように形成する。この場合、混合機は材料送出帯内に
ある。[0010] With such adjustment, the concentration CM is constant. The calculated required volumetric flow QH is fed to the regulator as a theoretical value (FIG. 1a). According to the scheme of Figure 1b, 2
The two calculated volume flow values QH and QL must be given to the regulator as new target values. Possibility of application The method can be applied to all types of material delivery strips (material delivery strips for single layer, multilayer, separation strips, Fourdrinier paper machines with or without vibration isolation, series or double tube groups, etc.) can. Figure 2-5 The sum of the mixed partial flows corresponds to the total feed flow to the material delivery zone. This replaces the traditional manifold. The mixer is outside the material delivery zone. Figure 6-11 The mixed partial flow of one section is only a part of the total flow of that section. The remaining flow is provided in a conventional manner. FIG. 6 The mixed partial stream is fed to the first tube group. These are separated into parts of the flow path by the separating wall in Figure 3a. Figure 7-8 Supplying mixed partial streams to passages between tube banks (e.g. perforated plates). FIGS. 9-10 Diagrams showing the direct feeding of mixed partial streams into single- or multi-row tubes with a turbulent charge in one section. FIG. 11 Diagram showing the supply to the jet flow space. Instead of a mixed partial stream, two regulating streams can be supplied in the material delivery zone. The inlet is formed in such a way that the two streams can mix with each other. In this case, the mixer is in the material delivery zone.

【図面の簡単な説明】[Brief explanation of the drawing]

【図１】流量調節方式の説明図。FIG. 1 is an explanatory diagram of a flow rate adjustment method.

【図２】材料送出帯を説明するための図。FIG. 2 is a diagram for explaining a material delivery zone.

【図３】材料送出帯を説明するための図。FIG. 3 is a diagram for explaining a material delivery zone.

【図４】材料送出帯を説明するための図。FIG. 4 is a diagram for explaining a material delivery zone.

【図５】材料送出帯を説明するための図。FIG. 5 is a diagram for explaining a material delivery zone.

【図６】材料送出帯を説明するための図。FIG. 6 is a diagram for explaining a material delivery zone.

【図７】材料送出帯を説明するための図。FIG. 7 is a diagram for explaining a material delivery zone.

【図８】材料送出帯を説明するための図。FIG. 8 is a diagram for explaining a material delivery zone.

【図９】材料送出帯を説明するための図。FIG. 9 is a diagram for explaining a material delivery zone.

【図１０】材料送出帯を説明するための図。FIG. 10 is a diagram for explaining a material delivery zone.

【図１１】材料送出帯を説明するための図。FIG. 11 is a diagram for explaining a material delivery zone.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】　　懸濁物質のための、多数の孔または通
路を備えた誘導装置と、懸濁物質を分離するための、送
出分離帯を有する送出通路を備え、さらに全作業区間に
わたって、懸濁物質の物質密度を調節するための手段を
備えた、製紙機の全作業区間にわたって、供給した懸濁
物質を配分するための配分装置を有する製紙機のための
材料送出帯において、（ａ）　　材料送出帯がその全体
にわたって分離壁により各区間に分けられ、（ｂ）　　
各区間に、部分流（区間流）を供給するための少なくと
も１本の供給管があり、（ｃ）　　各供給管には１台の
混合機が接続され、（ｄ）　　混合機には、与えられた
作動パラメータ（装入量、物質密度、繊維品質）を有す
る懸濁物質の流れを誘導するための、少なくとも２つの
接続部を備えることを特徴とする製紙機のための材料送
出帯。1. A guiding device with a number of holes or passages for suspended solids and a delivery channel with a delivery separation zone for separating the suspended solids; In a material delivery zone for a paper machine with a distribution device for distributing the supplied suspended solids over the entire working section of the paper machine, with means for adjusting the mass density of the suspended solids, (a) (b) the material delivery zone is divided into sections by separating walls throughout;
in each section there is at least one feed pipe for supplying a partial flow (section flow); (c) one mixer is connected to each feed pipe; (d) the mixer includes a feed pipe; Material delivery zone for a paper machine, characterized in that it comprises at least two connections for guiding the flow of suspended solids with defined operating parameters (charging, material density, fiber quality).
JP17460891A 1990-06-20 1991-06-19 Headbox for paper machine Expired - Lifetime JP3301623B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4019593.7 1990-06-20
DE4019593A DE4019593C2 (en) 1990-06-20 1990-06-20 Headbox for paper machines

Publications (2)

Publication Number Publication Date
JPH04333688A true JPH04333688A (en) 1992-11-20
JP3301623B2 JP3301623B2 (en) 2002-07-15

Family

ID=6408700

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17460891A Expired - Lifetime JP3301623B2 (en) 1990-06-20 1991-06-19 Headbox for paper machine

Country Status (6)

Country Link
EP (3) EP0789107B1 (en)
JP (1) JP3301623B2 (en)
AT (2) ATE214442T1 (en)
CA (1) CA2045038C (en)
DE (3) DE4019593C2 (en)
FI (2) FI912230A (en)

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ATE227370T1 (en) 2002-11-15
FI912230A (en) 1991-12-21
EP0785305B1 (en) 2002-03-13
EP0462472A1 (en) 1991-12-27
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CA2045038A1 (en) 1991-12-21
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DE59109230D1 (en) 2002-04-18
DE59109243D1 (en) 2002-12-12
CA2045038C (en) 2006-02-14
FI912230A0 (en) 1991-05-08
EP0785305A1 (en) 1997-07-23
EP0789107A2 (en) 1997-08-13
EP0789107A3 (en) 2000-01-19
ATE214442T1 (en) 2002-03-15
JP3301623B2 (en) 2002-07-15
DE4019593A1 (en) 1992-01-09
DE4019593C2 (en) 1994-01-20

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