DE456740C - Drying drum with external and internal heating - Google Patents

Drying drum with external and internal heating

Info

Publication number
DE456740C
DE456740C DEM92645D DEM0092645D DE456740C DE 456740 C DE456740 C DE 456740C DE M92645 D DEM92645 D DE M92645D DE M0092645 D DEM0092645 D DE M0092645D DE 456740 C DE456740 C DE 456740C
Authority
DE
Germany
Prior art keywords
drying drum
heating
external
air
heating chamber
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
DEM92645D
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.)
FRIEDRICH HAAS GES NEUWERK MAS
Original Assignee
FRIEDRICH HAAS GES NEUWERK MAS
Publication date
Priority to DEM92645D priority Critical patent/DE456740C/en
Application granted granted Critical
Publication of DE456740C publication Critical patent/DE456740C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/02Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/04Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
    • F26B11/0445Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having conductive heating arrangements, e.g. heated drum wall
    • F26B11/045Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having conductive heating arrangements, e.g. heated drum wall using heated internal elements, e.g. which move through or convey the materials to be dried

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Description

Trockentrommel mit Außen- und Innenbeheizung. Die Erfindung betrifft eine Trockentrommel zum Trocknen empfindlichen Gutes, das mit Feuergasen nicht unmittelbar in Berührung gebracht werden darf.Drying drum with external and internal heating. The invention relates to a drying drum for drying sensitive goods that are not directly exposed to fire gases may be brought into contact.

Die Vorrichtung besteht in der Hauptsache aus der sich drehenden Trockentrommel a, der seitlich angebauten Feuerung b und der Heizkammer c, welche die Trommel zwischen den Verlagerungen umgibt, sowie ferner aus der Lufteintrittskammer d und dem Abluftauslaßgehäuse e. In der Trommel sind am Umfange, wie in Abb. 3 dargestellt, heizbare hohle Hubschaufeln f angeordnet, welche das durch den Trichter g eingefüllte Trockengut bei der Drehung hochheben und nach kurzer Zeit allmählich wieder ausschütten. Die Beheizung dieser Schaufeln erfolgt durch die in der Feuerung b erzeugten Feuergase. Diese treten durch die im Trommelmantel angebrachten Öffnungen 1a in die Hubschaufeln ein und verlassen sie schließlich durch die Öffnungen i, aus denen sie mittels eines Exhaustors abgesaugt werden. Gleichzeitig umspült ein Teil der Heizgase die Trommel in Spiralwindungen von außen. Auch diese Gase werden nach dem Austritt aus der Heizkammer durch den Exhaustor abgesaugt. Die zur Fortführung der Feuchtigkeit nötige Luft tritt durch seitlich in den Heizkammerwänden angebrachte Öffnungen k in die die Wände von oben bis unten durchziehenden Luftschlitze l ein und durchströmt diese in Richtung nach der Lufteintrittskammer d. Hierdurch werden die Wände gekühlt und somit ihre Lebensdauer verlängert und gleichzeitig die Luft erhitzt. Die so erzeugte Heißluft strömt dann durch die Verbindungskanäle,ira und die Eintrittsöffnungen n in die Lufteintrittskammer d und von dieser in die Trommel. Nach Aufnahme der Feuchtigkeit wird die Luft durch das Abzugsrohr o mittels natürlichen oder künstlichen Zug abgeführt. Das getrocknete Gut tritt durch die mit einer Pendelklappe verschlossene Auslaufschurre p aus.The device consists mainly of the rotating drying drum a, the side-mounted furnace b and the heating chamber c, which has the drum between surrounds the displacements, and also from the air inlet chamber d and the exhaust air outlet housing e. In the drum, as shown in Fig. 3, there are heatable hollow lifting blades f arranged, which the dry material filled in through the funnel g during rotation lift up and gradually pour out again after a short time. The heating of this Shoveling is done by the fire gases generated in furnace b. These kick through the openings 1a in the drum shell and into the lifting blades They finally leave through the openings i, from which they are made by means of an exhaustor be sucked off. At the same time, part of the hot gases washes around the drum in spiral windings from the outside. These gases are also passed through the after exiting the heating chamber Exhaustor sucked off. The air necessary for the continuation of the moisture passes through openings k made laterally in the heating chamber walls into the walls from above down through the air slots l and flows through them in the direction of the air inlet chamber d. This cools the walls and thus their lifespan extended and heated the air at the same time. The hot air generated in this way then flows through the connecting channels, ira and the inlet openings n into the air inlet chamber d and from this into the drum. After absorbing the moisture, the air gets through the exhaust pipe o discharged by means of natural or artificial train. The dried one The discharge chute p, which is closed with a pendulum flap, is good.

Durch die heizbaren Schaufeln wird nicht nur die Heizfläche gegenüber der bisherigen Anordnung mit alleiniger Außenbeheizung des Trommelrohres um etwa 35 bis q0 Prozent vergrößert, sondern auch der Wärmeübergang an das Trocknungsgut gesteigert, weil die Heizgase durch die Schaufeln mit weit größerer Geschwindigkeit strömen, als dies bei der bisherigen Anordnung der Fall war, bei der die Heizgase am Mantel entlanggeführt wurden. Durch die Vorwärmung der Trockenluft in den Heizkammerwänden wird die Luft befähigt, größere Wassermengen aufzunehmen. Außerdem wird der sonst für die Lufterwärmung nötige Lufterhitzer vermieden.The heatable blades not only make the heating surface opposite the previous arrangement with only external heating of the drum tube by about 35 to q0 percent increased, but also the heat transfer to the items to be dried increased because the hot gases flow through the blades at a much greater speed flow than was the case with the previous arrangement in which the heating gases were led along the coat. By preheating the dry air in the heating chamber walls the air is enabled to absorb larger amounts of water. In addition, the otherwise Air heaters necessary for air heating avoided.

Um eine bessereWärmeübertragung an den Heizgasen an die Trockenluft zu erreichen, werden die inneren Wände statt aus Mauerwerk ganz oder streckenweise aus Blechen hergestellt.For better heat transfer from the hot gases to the dry air To achieve this, the inner walls are made entirely or in sections instead of masonry made from sheet metal.

Claims (3)

PATENTANSPRÜCHE: i. Trockentrommel mitAußenbeheizung durch Feuergase und Innenbeheizung durch vorgewärmte Trockenluft, gekennzeichnet durch den Einbau heizbarer hohler Hubschaufeln, die durch Mantelöffnungen mit der die Trommel umgebenden Heizkammer in Verbindung stehen. PATENT CLAIMS: i. Drying drum with external heating by fire gases and internal heating by preheated dry air, characterized by the installation heatable hollow lifting blades, which through jacket openings with the drum surrounding Are in communication with the heating chamber. 2. Trockentrommel nach Anspruch i, dadurch gekennzeichnet, daß die Trockenluft in den doppelwandigen Heizkammerwänden erhitzt wird. 2. Drying drum according to claim i, characterized in that that the dry air is heated in the double-walled heating chamber walls. 3. Trockentrommel nach Anspruch i und 2, dadurch gekennzeichnet, daß die inneren Heizkammerwände ganz oder streckenweise aus Blechen hergestellt sind.3. Drying drum according to claims i and 2, characterized in that the inner heating chamber walls are entirely or are made in parts from sheet metal.
DEM92645D Drying drum with external and internal heating Expired DE456740C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM92645D DE456740C (en) Drying drum with external and internal heating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM92645D DE456740C (en) Drying drum with external and internal heating

Publications (1)

Publication Number Publication Date
DE456740C true DE456740C (en) 1928-02-29

Family

ID=7322180

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM92645D Expired DE456740C (en) Drying drum with external and internal heating

Country Status (1)

Country Link
DE (1) DE456740C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0024755A3 (en) * 1979-08-27 1981-09-23 Renofalt V.O.F. Method and device for heating asphalt-containing materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0024755A3 (en) * 1979-08-27 1981-09-23 Renofalt V.O.F. Method and device for heating asphalt-containing materials

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