DE374690C - Process for drying leather u. like - Google Patents

Process for drying leather u. like

Info

Publication number
DE374690C
DE374690C DEH85552D DEH0085552D DE374690C DE 374690 C DE374690 C DE 374690C DE H85552 D DEH85552 D DE H85552D DE H0085552 D DEH0085552 D DE H0085552D DE 374690 C DE374690 C DE 374690C
Authority
DE
Germany
Prior art keywords
drying
slots
air
different heights
leather
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
DEH85552D
Other languages
German (de)
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.)
MORITZ HIRSCH DIPL ING
Original Assignee
MORITZ HIRSCH DIPL ING
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 MORITZ HIRSCH DIPL ING filed Critical MORITZ HIRSCH DIPL ING
Priority to DEH85552D priority Critical patent/DE374690C/en
Application granted granted Critical
Publication of DE374690C publication Critical patent/DE374690C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14BMECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00Manufacture of leather; Machines or devices therefor
    • C14B1/26Leather tensioning or stretching frames; Stretching-machines; Setting-out boards; Pasting boards
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/14Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by trays or racks or receptacles, which may be connected to endless chains or belts
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14BMECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B2700/00Mechanical treatment or processing of skins, hides or leather in general; Pelt-shearing machines; Making driving belts; Machines for splitting intestines
    • C14B2700/07Leather tensioning or stretching frames; Stretching-machines; Setting-out boards; Pasting boards; Fastening devices; Drying of leather

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Drying Of Solid Materials (AREA)

Description

Verfahren zur Trocknung von Leder u. dgl. Die künstliche Trocknung von Leder und ähnlichen Stoffen erfolgt unter Beachtung der Luftbewegung, nach der die angewärmte Luft bei Aufnahme von Feuchtigkeit unter Abkühlung schwerer wird, also sinkt. Es wird also zweckmäßig die trocknende Luft zu-. nächst oben auf das Trockengut geleitet, längs dessen sie, unter Aufnahme von Feuchtigkeit, niedersinkt. Würde man, entgegengesetzt, die Trockenluft von unten einführen, so wäre eine Luftbewegung längs des Trockengutes von unten nach oben nur dann möglich, wenn unter Kraft- oder Wärmeverlust ein scharfer Luftzug dem Bestreben der Luft, niederzusinken, entgegenwirkt. Aber auch bei Beachtung der natürlichen Luftbewegung ergeben sich Schwierigkeiten insofern, als bei stark feuchtem Leder und sich ähnlich verhaltenden anderen Körpern die Feuchtigkeit unter dem Einfiuß des Gewichts nach den unteren Teilen sinkt. Die oberen, von dem trocknenden Luftstrom zuerst bestrichenen Teile trocknen daher rascher als die unteren Teile aus und erreichen schließlich den Endzustand der Trockenheit, während die unteren Teile noch feucht sind. Das Trockengut wird infolgedessen oben leicht hart und brüchig und daher minderwertig.Method of drying leather and the like Artificial drying of leather and similar fabrics takes into account the movement of air after which the heated air becomes heavier when moisture is absorbed and cooled, so sinks. It is therefore useful to add the drying air. next up on that Dry material passed along which it sinks, absorbing moisture. If, on the contrary, one were to introduce the dry air from below, so an air movement along the drying material from bottom to top would only be possible if if, with loss of power or heat, a sharp draft of air counteracts the aspiration of the air, sinking counteracts. But also when observing the natural movement of air difficulties arise in that when the leather is very moist and similar other bodies retard moisture under the influence of weight the lower parts sinks. The upper ones, smeared first by the drying air stream Parts therefore dry out faster than the lower parts and eventually reach the final state of drought while the lower parts are still damp. That As a result, dry goods can easily become hard and brittle at the top and are therefore of inferior quality.

Um die Vorteile der natürlichen Luftbewegung beizubehalten und gleichzeitig den beschriebenen Nachteil einer übermäßigen Austrocknung der oberen Teile zu vermeiden, wird gemäß der Erfindung der Trockenvorgang so geleitet, daß die trocknenden Gase oder Dämpfe zunächst den höher liegenden und mit Fortschreiten des Trockenvorganges den tiefer liegenden Teilen des Trockengutes zugeleitet werden.To maintain the benefits of natural air movement and at the same time to avoid the described disadvantage of excessive drying of the upper parts, according to the invention, the drying process is conducted so that the drying gases or vapors initially higher up and as the drying process progresses be fed to the lower lying parts of the dry material.

Dieses Verfahren läßt sich in verschiedenen Ausführungen bewirken.This process can be carried out in various ways.

Wendet man es bei ruhendem Trockengut an, dann können an den Kanälen, welche die zur Trocknung dienende Luft, heiße Gase oder überhitzte Dämpfe zuleiten, Schlitze oder andere Regelvorrichtungen in verschiedener Höhenlage angebracht werden, von denen man zunächst die oberen, dann die mittleren und schließlich die unteren öffnet. Beim öffnen der oberen sind die mittleren und unteren Schlitze geschlossen, beim Öffnen der mittleren Schlitze die oberen und unteren und beim öffnen der unteren Schlitze die oberen und mittleren. Die Unterteilung braucht nicht etwa in drei Stufen erfolgen, sondern kann je nach dem Feuchtigkeitsgehalt, nach der Größe und Menge des Trockengutes u. dgl. in einer beliebigen Regelung erfolgen, und zwar entweder von Hand oder mechanisch. Die über- und nebeneinanderliegenden Abschlußvorrichtungen für die Schlitze können entweder einzeln eingestellt werden oder miteinander gekuppelt sein, so daß beim öffnen einer Reihe von Schlitzen die anderen geschlossen werden, und umgekehrt.If you use it with dry material at rest, you can use it on the channels, which supply the air used for drying, hot gases or superheated vapors, Slots or other regulating devices are installed at different heights, of which one first the upper, then the middle and finally the lower opens. When opening the top, the middle and bottom slots are closed, when opening the middle slots the upper and lower ones and when opening the lower one Slit the top and middle. The subdivision does not need to be in three stages but can be done depending on the moisture content, size and amount of the dry material and the like take place in any control, either by hand or mechanically. The locking devices lying one above the other and next to one another for the slots can either be set individually or coupled to one another so that when one row of slots is opened the others are closed, and vice versa.

Wird das Trockengut beweglich aufgehängt, derart, daß es längs der Luftschlitze wandert, dann kann die Anordnung der letzteren beispielsweise derart erfolgen, daß an der Eintrittstelle des Trockengutes die Luftschlitze möglichst hoch angeordnet sind und stufenweise gegen die Austrittstelle zu immer tiefer zu liegen kommen.If the dry material is suspended so that it is movable along the Air slots moves, then the arrangement of the latter can, for example, such take place that at the point of entry of the dry material, the air slots as possible are arranged high and gradually decrease towards the exit point come lying down.

Diese Anordnung ist auf der Zeichnung schematisch veranschaulicht. Die zu trocknenden Stoffe a werden z. B. mittels einer endlosen Fördervorrichtung b in der Richtung der gezeichneten Pfeile durch die Trockenanlage bewegt. Die Luftschlitze c sind so angeordnet, daß der oder die an der Eintrittstelle liegenden Schlitze c' am höchsten liegen, während der oder die am Austrittsende befindlichen Schlitze c" die tiefste Lage einnehmen.This arrangement is illustrated schematically in the drawing. The substances to be dried a are z. B. by means of an endless conveyor b moved through the drying system in the direction of the arrows drawn. The louvers c are arranged so that the slot or slots located at the entry point c 'are highest, during the slot or slots located at the exit end c "occupy the lowest position.

Dadurch, daß das Trockenmittel - Luft oder Gase oder überhitzte Dämpfe - nicht in gleicher Höhe dem Trockengut zugeführt wird, sondern mit zunehmender Trocknung allmählich an tiefer liegenden Stellen, werden alle Teile des Trockengutes allmählich von dem noch nicht mit Feuchtigkeit geschwängerten Trockenmittel bestrichen, so -daß eine gleichmäßige Trocknung des Arbeitsgutes gewährleistet wird.Because the desiccant - air or gases or superheated vapors - is not fed to the dry material in the same amount, but with increasing Drying gradually in deeper places, all parts of the dry goods are gradually coated with the desiccant that is not yet saturated with moisture, so -that uniform drying of the work piece is guaranteed.

Claims (3)

PATENT-ANsPRüCHE: i. Verfahren zur Trocknung von Leder und ähnlichen Stoffen, dadurch gekennzeichnet, daß das Trockenmittel (Gase oder Dämpfe) durch die Eintrittschlitze (c) in verschiedenen Höhenlagen regelbar eingeführt wird, indem bei Beginn des Trockenvorganges zunächst die oberen Schlitze, dann die mittleren und schließlich die unteren geöffnet werden. PATENT CLAIMS: i. Process for drying leather and the like Substances, characterized in that the desiccant (gases or vapors) through the entry slots (c) is introduced adjustable at different heights by At the beginning of the drying process, first the upper slits, then the middle ones and finally the lower ones are opened. 2. Vorrichtung zur Ausführung des Verfahrens nach Anspruch i, dadurch gekennzeichnet, daß die Verschlußvorrichtu ragen der in verschiedener Höhenlage angeordneten Eintrittschlitze in bekannter Weise derart miteinander gekuppelt sind, daß beim öffnen der in etwa gleicher Höhe liegenden Schlitze die übrigen Schlitzgruppen geschlossen werden. 2. Apparatus for carrying out the method according to claim i, characterized in that the locking device protrude in different heights arranged entry slots in a known manner in such a way are coupled together that when you open the lying at approximately the same height Slots the remaining slot groups are closed. 3. Vorrichtung zur Ausführung des Verfahrens nach Anspruch i, dadurch gekennzeichnet, daß für das durch den Trockenraum wandernde, z. B. an endlosen Ketten (b) hängende Trockengut (a) die Luftöffnungen (c) hintereinander in schräg nach unten abnehmender Höhe angebracht sind.3. Apparatus for performing the method according to claim i, characterized in that for the wandering through the drying room, for. B. on endless chains (b) hanging dry goods (a ) the air openings (c) are attached one behind the other at an inclined downward decreasing height.
DEH85552D 1921-05-22 1921-05-22 Process for drying leather u. like Expired DE374690C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH85552D DE374690C (en) 1921-05-22 1921-05-22 Process for drying leather u. like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH85552D DE374690C (en) 1921-05-22 1921-05-22 Process for drying leather u. like

Publications (1)

Publication Number Publication Date
DE374690C true DE374690C (en) 1923-04-27

Family

ID=7164442

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH85552D Expired DE374690C (en) 1921-05-22 1921-05-22 Process for drying leather u. like

Country Status (1)

Country Link
DE (1) DE374690C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3319355A (en) * 1965-02-12 1967-05-16 Michael F Lagnese Printed proof dryer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3319355A (en) * 1965-02-12 1967-05-16 Michael F Lagnese Printed proof dryer

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