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DE912993C - Continuously operating shredder or shredder, e.g. for alkali cellulose - Google Patents

Continuously operating shredder or shredder, e.g. for alkali cellulose

Info

Publication number
DE912993C
DE912993C DEW6029A DEW0006029A DE912993C DE 912993 C DE912993 C DE 912993C DE W6029 A DEW6029 A DE W6029A DE W0006029 A DEW0006029 A DE W0006029A DE 912993 C DE912993 C DE 912993C
Authority
DE
Germany
Prior art keywords
shredder
alkali cellulose
continuously operating
screw
fiberization
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.)
Expired
Application number
DEW6029A
Other languages
German (de)
Inventor
Dipl-Ing Christian Boerner
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.)
Glanzstoff AG
Original Assignee
Glanzstoff AG
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
Application filed by Glanzstoff AG filed Critical Glanzstoff AG
Priority to DEW6029A priority Critical patent/DE912993C/en
Application granted granted Critical
Publication of DE912993C publication Critical patent/DE912993C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C08B1/08—Alkali cellulose
    • C08B1/10—Apparatus for the preparation of alkali cellulose
    • C08B1/14—Ripening devices

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Disintegrating Or Milling (AREA)
  • Crushing And Pulverization Processes (AREA)

Description

Es sind bereits Zerfaserer für Alkalicellulose vorgeschlagen worden, welche im wesentlichen aus einem zylindrischen Gehäuse und einem gleichachsig darin eingebauten Rotor bestehen. Dieser Rotor hat die Gestalt einer Schnecke, die axial fördernd und gleichzeitig zerfasernd oder zerkleinernd wirkt. There have already been proposed shredders for alkali cellulose, which consists essentially of a cylindrical housing and one equiaxed therein built-in rotor. This rotor has the shape of a worm, which is axial promotes and at the same time frays or shreds.

Bezeichnend für die Schnecke dieses Zerfaserers ist vor allem die Tatsache, daß in ihren Schraubengang Querwände eingebaut sind, um Einzelkammern bzw. Taschen zu bilden und die zu bearbeitenden Gutsteilchen bis zum Erhalt des jeweils gewünschen Feinheitsgrades in dem Schraubengang der Schnecke zurückzuhalten, wobei die Einzelkammern die Gewähr dafür bieten sollen, daß das Zerfaserungsgut wirklich gleichmäßig beansprucht wird.The main characteristic of the screw in this shredder is the one The fact that transverse walls are built into their screw passage to form individual chambers or to form pockets and the good particles to be processed until the receipt of the to hold back the desired degree of fineness in the flight of the screw, whereby the individual chambers are intended to guarantee that the fiberized material is really evenly used.

Diese Art Zerfaserer haben jedoch den Nachteil, daß eine vollkommene Gleichmäßigkeit des Gutes nicht restlos verbürgt wird, weil innerhalb der einzelnen Kammern eine freie Umwälzung erfolgt, so daß nach statistischen Gesetzen und je nach Größe der Kammern einzelne Teilchen eine relativ lange Verweilzeit durchmachen müssen, bevor sie den wirkenden Spalt überschreiten, hingegen andere Teilchen jedoch sofort oder sehr bald nach ihrem Eintritt in die Kammer weitergeleitet und gequetscht werden können. Diejenigen Teilchen, die sofort weitergeleitet werden, werden zuwenig bearbeitet, da ihre Verweilzeit, gemessen an jener der erst später zur Weiterleitung gelangenden Teilchen, relativ zu kurz bzw. zu gering ist. However, this type of defiber has the disadvantage that a perfect Uniformity of the goods is not completely guaranteed because within the individual Chambers a free circulation takes place, so that according to statistical laws and depending Depending on the size of the chambers, individual particles go through a relatively long residence time before they cross the effective gap, however, other particles must passed and crushed immediately or very soon after entering the chamber can be. Those particles that are passed on immediately become too few processed because their dwell time, measured against that of the later for forwarding arriving particles is relatively too short or too small.

Jenen Schwierigkeiten zu begegnen, ist der Zweck der Erfindung. Die Querwände 2 sind nicht wie in Abb. I und 2 geradlinig ausgebildet, sondern im Querschnitt gleich oder ähnlich einer logarithmischen Spirale gebogen (Abb. 3). Des weiteren kommt eine größere Vielzahl zur Anwendung, so daß kleinere Kammern entstehen, die auch im Verhältnis zur Reibungsfläche klein sind; dadurch wird eine unnötige Materialumwälzung ohne Zerfaserungswirkung vermieden. Bei diesen Flächen wird nicht nur der Kamm, sondern die gesamte Keilfläche entsprechend als Zerfaserungsfläche ausgebildet. Die Zerfaserungswirkung kann durch diese spiralförmig angeordneten Zerfaserungsflächen vervielfacht werden. To meet those difficulties is the purpose of the invention. the Transverse walls 2 are not designed in a straight line as in Fig. I and 2, but in cross-section curved like or similar to a logarithmic spiral (Fig. 3). Further a larger variety is used, so that smaller chambers are created are also small in relation to the friction surface; this causes unnecessary material circulation Avoided without a fraying effect. In these areas, not only the crest, Instead, the entire wedge surface is designed as a fiberization surface. The fiberizing effect can be achieved through these spiral-shaped fiberizing surfaces be multiplied.

Claims (2)

PATENTANSPRUCHE: I. Kontinuierlich arbeitender Zerfaserer oder Zerreiber, z. B. für Alkalicellulose, geeignet zur Herstellung von Kunstseide und Zellwolle, bestehend aus einem zylindrischen Gehäuse mit einer gleichachsig darin eingebauten und gleichzeitig fördernd wirkenden Schnecke, gekennzeichnet durch in den Schraubengang der Schnecke eingebaute, gleich oder ähnlich einer logarithmischen Spirale geformte Querwände zum Vergrößern der Zerfaserungsfläche, Verlängern der Verweilzeit des Gutes und auch zum Steigern der Zerfaserungsintensität. PATENT CLAIMS: I. Continuously working shredder or shredder, z. B. for alkali cellulose, suitable for the production of rayon and rayon, consisting of a cylindrical housing with a coaxial built-in and at the same time working screw, characterized by in the screw thread built into the worm, shaped like or similar to a logarithmic spiral Cross walls to increase the fiberisation area, extend the dwell time of the Good and also to increase the intensity of fiberization. 2. Zerfaserer nach Anspruch I, dadurch gekennzeichnet, daß die spiralförmig angeordneten Zerfaserungsflächen gleiche oder auch in Abhängigkeit von der Gesamtschneckenlänge verschiedene Neigungswinkel haben. 2. defiber according to claim I, characterized in that the spiral arranged fiberization surfaces the same or also depending on the total screw length have different angles of inclination.
DEW6029A 1951-06-14 1951-06-14 Continuously operating shredder or shredder, e.g. for alkali cellulose Expired DE912993C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW6029A DE912993C (en) 1951-06-14 1951-06-14 Continuously operating shredder or shredder, e.g. for alkali cellulose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW6029A DE912993C (en) 1951-06-14 1951-06-14 Continuously operating shredder or shredder, e.g. for alkali cellulose

Publications (1)

Publication Number Publication Date
DE912993C true DE912993C (en) 1954-06-08

Family

ID=7592976

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW6029A Expired DE912993C (en) 1951-06-14 1951-06-14 Continuously operating shredder or shredder, e.g. for alkali cellulose

Country Status (1)

Country Link
DE (1) DE912993C (en)

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