DE1205913B - Hot plate vacuum dryer for flat goods - Google Patents

Hot plate vacuum dryer for flat goods

Info

Publication number
DE1205913B
DE1205913B DET24065A DET0024065A DE1205913B DE 1205913 B DE1205913 B DE 1205913B DE T24065 A DET24065 A DE T24065A DE T0024065 A DET0024065 A DE T0024065A DE 1205913 B DE1205913 B DE 1205913B
Authority
DE
Germany
Prior art keywords
vacuum
hot plate
flat goods
leather
plate
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.)
Pending
Application number
DET24065A
Other languages
German (de)
Inventor
Rolf Hohmann
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.)
TROCKENTECHNIK GmbH
Original Assignee
TROCKENTECHNIK 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
Application filed by TROCKENTECHNIK GmbH filed Critical TROCKENTECHNIK GmbH
Priority to DET24065A priority Critical patent/DE1205913B/en
Priority to GB4927763A priority patent/GB1006501A/en
Publication of DE1205913B publication Critical patent/DE1205913B/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • F26B5/045Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum for drying thin, flat articles in a batch operation, e.g. leather, rugs, gels
    • 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
    • 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)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Drying Of Solid Materials (AREA)

Description

Heizplatten-Vakuumtrockner für Flachgut Die Erfindung bezieht sich auf einen Heizplatten-Vakuumtrockner für durch Siebbleche auf Heizplatten angedrücktes Flachgut, z. B. Leder, mit dem Vakuumtrocknungsraum auf der Heizplatte umschließenden Deckel. Bei einem derartigen Trockner soll es der Erfindungsgegenstand ermöglichen, den Anpreßdruck für das Flachgut auf der Heizplatte einstellen zu können. Bei den bisher bekannten Trocknern dieser Bauweise wird das Leder auf die Heizplatte gebracht und der Deckel auf die Heizplatte abgesenkt. Er ist eine Haube, die am Rand durch eine Gummidichtung gegen die Heizplatte abgedichtet ist. In ihm befindet sich ein Siebblech, unter dem ein Filz befestigt ist. An dem Deckel wird eine Leitung zur Vakuumpumpe angeschlossen, die den Wasserdampf aus dem Leder durch den Filz und das Siebblech in den Deckelraum saugt und durch die Vakuumleitung abführt. Um ein Werfen des Leders beim Trocknen zu verhindern, muß ein gewisser Druck auf diesem liegen.Hot Plate Vacuum Dryers for Flat Goods The invention relates to on a hot plate vacuum dryer for things pressed through sieve plates onto hot plates Flat goods, e.g. B. leather, enclosing the vacuum drying room on the heating plate Lid. In the case of such a dryer, the subject matter of the invention should enable to be able to adjust the contact pressure for the flat goods on the heating plate. Both hitherto known dryers of this design, the leather is placed on the heating plate and the lid is lowered onto the heating plate. He's a hood that's on the brink by a rubber gasket is sealed against the heating plate. There is a Sieve plate under which a felt is attached. On the cover is a line for Connected to a vacuum pump, which draws the water vapor from the leather through the felt and the sieve plate is sucked into the lid area and discharged through the vacuum line. To a To prevent throwing of the leather while drying, there needs to be some pressure on this lie.

Der Trockner arbeitet mit sehr hohem Vakuum, so daß fast der gesamte äußere Luftdruck auf dem Deckel und damit auf dem Leder ruht, dieses wird daher einem Druck von etwa 1 kg/cm2 ausgesetzt.The dryer works with a very high vacuum, so that almost the entire external air pressure rests on the lid and thus on the leather, this is therefore exposed to a pressure of about 1 kg / cm2.

Da dieser Druck bei empfindlichen Ledern in nassem Zustand zu hoch ist, wird gemäß der Erfindung vorgeschlagen, den eingangs bezeichneten Trockner dadurch zu ergänzen, daß ein mit dem Siebblech 5 fest und mit dem Deckel elastisch verbundener Zwischenboden 9 den Vakuumraum aufteilt in einen unteren, direkt mit der Vakuumpumpe verbundenen Teilraum und in einen oberen, der drucksteuerbar mit dieser verbunden ist. Bei einer solchen Ausführung legt sich der Deckelrand auf die Heizplatte, so daß der Deckel abgestützt ist. Der untere Deckelteilraum enthält das Siebblech mit dem Filz. Dieser Raum wird unter das höchsterreichbare Vakuum, etwa 9511/o gestellt, um das im Leder vorhandene Wasser zu verdampfen. In dem oberen Deckelteilraum kann man durch Drucksteuermittel (Drossel) in der Vakuumleitung jeden beliebigen Unterdruck einstellen und damit das Leder praktisch mit einem Druck von 0 bis 1 kg/cm2 belasten.Because this pressure is too high for sensitive leathers when wet is, it is proposed according to the invention, the dryer mentioned at the beginning to be supplemented by the fact that a fixed with the sieve plate 5 and elastic with the cover connected intermediate floor 9 divides the vacuum space into a lower one, directly with the vacuum pump connected sub-space and in an upper, the pressure controllable with this is connected. In such an embodiment, the edge of the cover lies on top the hot plate so that the lid is supported. The lower lid compartment contains the sieve plate with the felt. This room is under the highest possible vacuum, about 9511 / o placed in order to evaporate the water present in the leather. In the upper one Lid subspace can be controlled by pressure control means (throttle) in the vacuum line set any negative pressure and thus the leather practically with a pressure of Load 0 to 1 kg / cm2.

Die Zeichnung zeigt in F i g. 1 einen Schnitt durch einen bekannten Heizplatten-Vakuumtrockner und in F i g. 2 eine Ausführung nach der Erfindung.The drawing shows in FIG. 1 shows a section through a known one Hot plate vacuum dryer and in FIG. 2 shows an embodiment according to the invention.

Bei der bisherigen Ausführung nach F i g. 1 befindet sich über der Heizplatte 1 ein Deckel 2, der das Leder 3 auf der Heizplatte überdeckt. Abstandhalter 4 verbinden mit dem Deckel 2 ein Siebblech 5, das einen Filz 6 trägt, der das Leder 3 abdeckt. Der Deckelraum 2a ist durch einen Stutzen 7 mit der Vakuumpumpe verbunden und gegenüber der Heizplatte durch einen elastischen Ring 8 abgedichtet.In the previous version according to FIG. 1 there is a cover 2 above the heating plate 1, which covers the leather 3 on the heating plate. Spacers 4 connect a screen plate 5 to the cover 2 , which carries a felt 6 which covers the leather 3. The cover space 2a is connected to the vacuum pump by a connector 7 and is sealed off from the heating plate by an elastic ring 8.

Gemäß F i g. 2 ist innerhalb des Deckels 2 ein Zwischenboden 9 durch elastische Gummistreifen 10 mit dem Deckelrand 2 b verbunden. Oberhalb dieses Zwischenbodens befinden sich Abstandhalter 11. Durch Aufhänger 12 ist das Siebblech 5 mit dem Zwischenboden 9 verbunden. Durch diesen entstehen zwei Teilräume 2 c und 2 d. Der untere Raum 2 d ist über dem Stutzen 7a direkt mit der Vakuumpumpe verbunden, während der Stutzen 7 b des oberen Teilraumes 2 b drucksteuerbar auch mit der Vakuumpumpe verbunden ist. Durch entsprechende Steuerung kann in dem Raum 2d jeder gewünschte Unterdruck eingestellt werden, so daß auf diese Weise der Anpreßdruck auf das Leder 3 auf beliebiger Höhe gehalten werden kann.According to FIG. 2, an intermediate base 9 is connected within the lid 2 by elastic rubber strips 10 to the lid edge 2 b. Spacers 11 are located above this intermediate floor. The screen plate 5 is connected to the intermediate floor 9 by hangers 12. This creates two sub-spaces 2 c and 2 d. The lower chamber 2 is connected via the neck d 7a directly to the vacuum pump while the stub 7 b of the upper part space 2 b controllable pressure also connected to the vacuum pump. Any desired negative pressure can be set in the space 2d by appropriate control, so that in this way the pressure on the leather 3 can be kept at any desired level.

Claims (1)

Patentanspruch: Heizplattenvakuumtrockner für durch Siebbleche auf Heizplatten angedrücktes Flachgut, z. B. Leder, mit den Vakuumtrocknungsraum auf der Heizplatte umschließendem Deckel, d a -durch gekennzeichnet, daß ein mit dem Siebblech (5) fest und mit dem Deckel elastisch verbundener Zwischenboden (9) den Vakuumraum aufteilt in einen unteren, direkt mit einer Vakuumpumpe verbundenen Teilraum und in einen oberen, der drucksteuerbar mit dieser verbunden ist. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 867 949, 930 277; deutsche Auslegeschrift Nr. 1067 298.Claim: Hot plate vacuum dryer for through sieve plates Flat goods pressed onto heating plates, e.g. B. leather, with the vacuum drying room the heating plate enclosing lid, d a -characterized in that a with the The sieve plate (5) firmly and the intermediate base (9) elastically connected to the cover The vacuum space is divided into a lower sub-space that is directly connected to a vacuum pump and into an upper one, which is connected to it in a pressure-controllable manner. Considered Publications: German Patent Nos. 867 949, 930 277; German interpretation document No. 1067 298.
DET24065A 1963-05-29 1963-05-29 Hot plate vacuum dryer for flat goods Pending DE1205913B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DET24065A DE1205913B (en) 1963-05-29 1963-05-29 Hot plate vacuum dryer for flat goods
GB4927763A GB1006501A (en) 1963-05-29 1963-12-13 Improvements in and relating to vacuum driers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET24065A DE1205913B (en) 1963-05-29 1963-05-29 Hot plate vacuum dryer for flat goods

Publications (1)

Publication Number Publication Date
DE1205913B true DE1205913B (en) 1965-11-25

Family

ID=7551291

Family Applications (1)

Application Number Title Priority Date Filing Date
DET24065A Pending DE1205913B (en) 1963-05-29 1963-05-29 Hot plate vacuum dryer for flat goods

Country Status (2)

Country Link
DE (1) DE1205913B (en)
GB (1) GB1006501A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3838370A1 (en) * 1988-11-11 1991-06-20 Joachim Spahrmann DEVICE FOR DRYING LEATHER OR THE LIKE
DE4131262A1 (en) * 1991-09-20 1993-04-01 Dokoupil Jiri Elastic membrane stretching and drying leather - extracts water vapour by vacuum via. channel network in surface
EP3699344A1 (en) * 2019-02-21 2020-08-26 Technische Universität Dresden Method and device for producing a moulded component made of fibre material

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE867949C (en) * 1943-05-23 1953-02-23 Norddeutsche Homogenholz Ges M Method and device for drying and hardening of molded fibrous bodies
DE930277C (en) * 1953-09-08 1955-07-14 United Shoe Machinery Corp Process for drying leather work pieces such as hides and furs and device for carrying out the process
DE1067298B (en) * 1959-10-15 J. W. Zanders, Feinpapierfabrik G.m.b.H., Bergisch Gladbach Device for pressing cardboard out of the hand

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1067298B (en) * 1959-10-15 J. W. Zanders, Feinpapierfabrik G.m.b.H., Bergisch Gladbach Device for pressing cardboard out of the hand
DE867949C (en) * 1943-05-23 1953-02-23 Norddeutsche Homogenholz Ges M Method and device for drying and hardening of molded fibrous bodies
DE930277C (en) * 1953-09-08 1955-07-14 United Shoe Machinery Corp Process for drying leather work pieces such as hides and furs and device for carrying out the process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3838370A1 (en) * 1988-11-11 1991-06-20 Joachim Spahrmann DEVICE FOR DRYING LEATHER OR THE LIKE
DE4131262A1 (en) * 1991-09-20 1993-04-01 Dokoupil Jiri Elastic membrane stretching and drying leather - extracts water vapour by vacuum via. channel network in surface
EP3699344A1 (en) * 2019-02-21 2020-08-26 Technische Universität Dresden Method and device for producing a moulded component made of fibre material

Also Published As

Publication number Publication date
GB1006501A (en) 1965-10-06

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