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EP0131162A1 - Device for the preparation of road surfacing material - Google Patents

Device for the preparation of road surfacing material Download PDF

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Publication number
EP0131162A1
EP0131162A1 EP84106601A EP84106601A EP0131162A1 EP 0131162 A1 EP0131162 A1 EP 0131162A1 EP 84106601 A EP84106601 A EP 84106601A EP 84106601 A EP84106601 A EP 84106601A EP 0131162 A1 EP0131162 A1 EP 0131162A1
Authority
EP
European Patent Office
Prior art keywords
drum
burner
feed device
grit
asphalt
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
EP84106601A
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German (de)
French (fr)
Other versions
EP0131162B1 (en
Inventor
Klaus Dipl.-Kaufmann Thesenfitz
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.)
LINNHOFF and THESENFITZ MASCHINENBAU GmbH
Original Assignee
LINNHOFF and THESENFITZ MASCHINENBAU 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.)
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Publication date
Application filed by LINNHOFF and THESENFITZ MASCHINENBAU GmbH filed Critical LINNHOFF and THESENFITZ MASCHINENBAU GmbH
Publication of EP0131162A1 publication Critical patent/EP0131162A1/en
Application granted granted Critical
Publication of EP0131162B1 publication Critical patent/EP0131162B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
    • E01C19/1027—Mixing in a rotary receptacle
    • E01C19/1036—Mixing in a rotary receptacle for in-plant recycling or for reprocessing, e.g. adapted to receive and reprocess an addition of salvaged material, adapted to reheat and remix cooled-down batches
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/05—Crushing, pulverising or disintegrating apparatus; Aggregate screening, cleaning, drying or heating apparatus; Dust-collecting arrangements specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C2019/1081—Details not otherwise provided for
    • E01C2019/109—Mixing containers having a counter flow drum, i.e. the flow of material is opposite to the gas flow

Definitions

  • the road surface material essentially consists of bitumen or asphalt and grit of different grain sizes.
  • Coarse grit grit is used to build a support structure, grit of smaller grit fills the cavities of the support structure within limits and the bitumen or asphalt penetrating the prepared road surface connects the grit components with one another and fixes them in their position.
  • the individual road surface components are used in the correct mixing ratio. This is particularly important if the individual components are not applied one after the other in the ceiling area, i.e. first the support structure is built up from coarse grit, then smaller grit size is caused to penetrate into the cavities of the support structure and the bitumen or asphalt is finally applied, but if the pavement mix is first prepared separately and then applied as a whole to the pavement substructure. Such methods are used, in particular, for reasons of the most efficient possible way of working.
  • the individual components are brought together in mixers and mixed well, then brought to the processing temperature to be finally processed, i.e. to be applied to the road base.
  • the chippings of different grain sizes are placed on a conveyor belt in the correct mixing ratio from a number of feed hoppers corresponding to the number of different chippings and introduced into a lying drum which rotates about its longitudinal axis.
  • the grit is introduced into the drum at one end and conveyed to the other end of the drum while the drum is rotating. From this other end of the drum, a burner protrudes into the drum, the direction of the flame of which is opposite to the transport direction of the material and heats it to about 200 ° C.
  • dust and moisture are removed, so that at the end of the drum grit leaves, which is dried, preheated and freed from dust.
  • the chippings in the desired grain composition leaving the drum in such a processed state are introduced by means of a bucket elevator into a classifying device with a balance, in which a suitable proportion of the previously removed dust is added to the chippings, as well as bitumen and a filler in a predetermined amount.
  • a suitable proportion of the previously removed dust is added to the chippings, as well as bitumen and a filler in a predetermined amount.
  • bitumen at a temperature of 165 ° C
  • the filler at a temperature ⁇ on 10 ° C is added.
  • the mixture with those guaranteed by the balance Constant mixture proportions are finally mixed well in a twin-shaft compulsory mixer and are available for processing, ie for application to the pavement substructure.
  • the system described above was modified in such a way that the drum is concentrically surrounded by a sieve drum, which consists of sieve sections of different mesh sizes which follow one another in the longitudinal direction of the drum. After the chippings of different grain sizes have emerged at the discharge end of the inner drum, the chippings enter the annular space between the inner drum with the drum casing closed up to the outlet openings and the sieve drum. For its part, the sieve drum is surrounded by a housing which has a discharge funnel at the lower end. The grit is classified by the sieve drum and passed through the discharge hopper for further processing. The further processing takes place as for the system described above.
  • This system also achieves a usable result, the constructional and operational effort is reduced, but it is also not possible to reuse the material of old road surfaces with this system.
  • the object of the present invention is to improve the known system in its two versions in such a way that the structural and operational expenditure is further reduced and that in particular the reuse of old road surfaces is possible.
  • a drum 2 In a fixed housing 1 there is a drum 2 with a horizontal longitudinal axis 3 rotatably supported about this longitudinal axis.
  • a burner 4 whose longitudinal flame axis coincides with the longitudinal drum axis 3, projects into the drum 2 from the left drum end in the illustration.
  • the burner can be of any type and can be operated with gas or oil.
  • the drum 2 is driven by a motor (not shown) via a gear unit which includes a race 5 surrounding the drum and firmly connected to it.
  • a plurality of so-called hot silos 6 are arranged one after the other in the longitudinal direction of the drum on the housing 1.
  • These hot silos are funnel-shaped containers that are largely insulated from temperature radiation and that contain the chippings of different particle sizes that emerge from the drum 1, mixed with bitumen or asphalt in a manner to be described below, and place them on a conveyor belt for further processing.
  • circular screens 7 are arranged in succession in the longitudinal direction of the drum on the drum 2 such that an annular space 8 exists between the jacket of the drum 2 and the circular screens 7.
  • the circular sieves have different mesh sizes, the circular sieve 7a with the largest mesh size being on the right in the drawing, the circular sieve 7d with the smallest mesh size being on the left end of the drum 2 in the drawing.
  • the annular space 8 communicates with the interior of the drum 2 via openings 9 which are evenly distributed over the drum circumference at the drum end on the left in the drawing.
  • a mixture between the old asphalt introduced via the device 11 and the fresh material introduced via the device 10 takes place in the area of the discharge openings 9, the old asphalt is less directly through the burner 4 than indirectly through the guidance of the scraper through the flame zone and through Heat absorption from the fresh goods warmed. a Ignition of the asphalt is largely impossible.
  • the old asphalt is in the mixing drum for a relatively short time, is heated without direct contact with the flame, and is mixed well with the chippings coming from the other end of the drum during the heating process.
  • the mixture of old asphalt and grit passes through the openings 9 into the annular space 8 and from there, classified according to the size of the grit, into the hot silos 6 and can be removed for further processing.
  • the dust and moisture are discharged through an exhaust stack 19 at the drum end of the feed device 10.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)

Abstract

Gegenstand der Erfindung ist eine Vorrichtung, mit der der auf einen Straßenunterbau aufzubringende Straßenbelag aus Splitt und Bitumen aufbereitet werden kann. Die erfindungsgemäße Vorrichtung ist so ausgestaltet, daß die Wiederverwendung von Altasphalt möglich ist.The invention relates to a device with which the road surface to be applied to a road substructure can be prepared from chippings and bitumen. The device according to the invention is designed so that the reuse of old asphalt is possible.

Description

Bei der Herstellung von Straßendecken mit Bitumen besteht das Straßendeckenmaterial im wesentlichen aus Bitumen bzw. Asphalt und Splitt unterschiedlicher Körnung. Splitt grober Körnung dient dem Aufbau eines Stützgerüstes, Splitt kleinerer Körnung füllt in Grenzen die Hohlräume des Stützgerüstes aus und das in die so vorbereitete Straßendecke eindringende Bitumen bzw. der Asphalt verbindet die Splittbestandteile miteinander und fixiert sie in ihrer Lage.In the production of road surfaces with bitumen, the road surface material essentially consists of bitumen or asphalt and grit of different grain sizes. Coarse grit grit is used to build a support structure, grit of smaller grit fills the cavities of the support structure within limits and the bitumen or asphalt penetrating the prepared road surface connects the grit components with one another and fixes them in their position.

Bei dieser Herstellung einer Straßendecke muß darauf geachtet werden, daß die einzelnen Straßendeckenbestandteile im richtigen Mischungsverhältnis Anwendung finden. Dies ist insbesondere dann wichtig, wenn die einzelnen Bestandteile nicht nacheinander im Deckenbereich aufgebracht werden, also zunächst das Stützgerüst aus grobem Splitt aufgebaut, dann Splitt kleinerer Körnung zum Eindringen in die Hohlräume des Stützgerüstes veranlaßt und schließlich das Bitumen bzw. der Asphalt aufgetragen wird, sondern wenn das Straßendeckengemisch zunächst separat aufbereitet und dann als Gesamtheit auf den Straßendeckenunterbau aufgetragen wird. Solche Verfahren kommen insbesondere aus Gründen einer möglichst rationellen Arbeitsweise zur Anwendung. Die einzelnen Bestandteile werden in Mischern zusammengebracht und gut gemischt, dann auf die Verarbeitungstemperatur gebracht, um schließlich verarbeitet, d.h. auf den Straßenunterbau aufgetragen zu werden.When manufacturing a road surface, care must be taken that the individual road surface components are used in the correct mixing ratio. This is particularly important if the individual components are not applied one after the other in the ceiling area, i.e. first the support structure is built up from coarse grit, then smaller grit size is caused to penetrate into the cavities of the support structure and the bitumen or asphalt is finally applied, but if the pavement mix is first prepared separately and then applied as a whole to the pavement substructure. Such methods are used, in particular, for reasons of the most efficient possible way of working. The individual components are brought together in mixers and mixed well, then brought to the processing temperature to be finally processed, i.e. to be applied to the road base.

Bei einem solchen bekannten Verfahren wird der Splitt unterschiedlicher Körnung im richtigen Mischungsverhältnis aus einer der Anzahl der verschiedenen Splittkörnungen entsprechenden Anzahl von Aufgabetrichtern auf ein Förderband aufgegeben und in eine liegende Trommel eingeführt, die sich um ihre Längsachse dreht. Der Splitt wird am einen Ende in die Trommel eingegeben und bei sich drehender Trommel zum anderen Trommelende gefördert. Von diesem anderen Trommelende aus ragt in die Trommel ein Brenner, dessen Flammenrichtung der Transportrichtung des Gutes entgegengerichtet ist und dieses auf etwa 200 C erwärmt. Während des Guttransportes durch die Trommel werden Staub und Feuchtigkeit entfernt, so daß am Ende der Trommel Splitt diese verläßt, der getrocknet, vorgewärmt und von Staub befreit ist. Der die Trommel in so aufbereitetem Zustand verlassende Splitt in einer gewünschten Körnungszusammensetzung wird mittels eines Becherwerkes in eine Klassiereinrichtung mit einer Waage eingegeben, in der dem Splitt ein angemessener Anteil des vorher entfernten Staubes wieder zugegeben wird, außerdem Bitumen und in vorbestimmter Menge ein Füller. Um die gewünschte Verarbeitungstemperatur zu haben, wird das Bitumen mit einer Temperatur von 165°C, der Füller mit einer Temperatur \on 10°C zugegeben. Das Gemisch mit den durch die Waage gewährleisteten Gemischanteilen wird schließlich in einem Doppelwellenzwangsmischer gut durchgemischt und steht für die Verarbeitung, d.h. zum Auftragen auf den Straßonunterbau zur Verfügung.In such a known method, the chippings of different grain sizes are placed on a conveyor belt in the correct mixing ratio from a number of feed hoppers corresponding to the number of different chippings and introduced into a lying drum which rotates about its longitudinal axis. The grit is introduced into the drum at one end and conveyed to the other end of the drum while the drum is rotating. From this other end of the drum, a burner protrudes into the drum, the direction of the flame of which is opposite to the transport direction of the material and heats it to about 200 ° C. During the transport of goods through the drum, dust and moisture are removed, so that at the end of the drum grit leaves, which is dried, preheated and freed from dust. The chippings in the desired grain composition leaving the drum in such a processed state are introduced by means of a bucket elevator into a classifying device with a balance, in which a suitable proportion of the previously removed dust is added to the chippings, as well as bitumen and a filler in a predetermined amount. To the desired processing temperature to have the bitumen at a temperature of 165 ° C, the filler at a temperature \ on 10 ° C is added. The mixture with those guaranteed by the balance Constant mixture proportions are finally mixed well in a twin-shaft compulsory mixer and are available for processing, ie for application to the pavement substructure.

Mit diesem allgemein angewendeten Verfahren wird ein Straßendeckengemisch guter Verarbeitbarkeit erzielt, es ist eine allen Ansprüchen genügende Straßendecke herzustellen, das Verfahren hat allerdings den Nachteil, daß dieses positive Ergebnis mit relativ großem Aufwand erzielt wird. Die für die Durchführung des Verfahrens notwendige Anlage ist in Aufbau und Betrieb sehr aufwendig. Außerdem ist es bei diesem Verfahren nicht vorgesehen und auch nicht möglich, einen alten Straßenbelag wiederzuverwenden, d.h. in den Herstellungsprozess des neuen Straßenbelages alten SLraßenbelag in einem angemessenen Verhältnis einzuführen.With this generally used method, a mixture of road surfaces with good processability is achieved; a road surface that meets all requirements is to be produced, but the method has the disadvantage that this positive result is achieved with relatively great effort. The system required to carry out the method is very complex to set up and operate. In addition, this method is not intended and is also not possible to reuse an old road surface, i.e. to introduce old S-road surface in an appropriate ratio in the manufacturing process of the new road surface.

In dem Bestreben, ein brauchbares Ergebnis mit geringerem Bau- und Betriebsaufwand zu erzielen, wurde die vorbeschriebene Anlage in der Weise abgewandelt, daß die Trommel konzentrisch von einer Siebtrommel umgeben wird, die aus in Trommellängsrichtung aufeinanderfolgenden Siebabschnitten unterschiedlicher Maschenweiten besteht. Nach dem Austreten des Splittes unterschiedlicher Körnung am Abgabeende der inneren Trommel gelangt der Splitt in den Ringraum zwischen der inneren Trommel mit bis auf die Austrittsöffnungen geschlossenem Trommelmantel und der Siebtrommel. Die Siebtrommel ihrerseits ist umgeben von einem Gehäuse, das am unteren Ende Abgabetrichter hat. Durch die Siebtrommel wird der Splitt klassiert und gelangt zur weiteren Verarbeitung durch die Abgabetrichter. Die weitere Verarbeitung erfolgt wie bei der vorbeschriebenen Anlage. Es wird mit dieser Anlage auch noch ein brauchbares Ergebnis erzielt, der bauliche und betriebliche Aufwand ist verringert, allerdings ist auch bei dieser Anlage die Wiederverwendung des Materiales alter Straßendecken nicht möglich.In order to achieve a usable result with less construction and operating effort, the system described above was modified in such a way that the drum is concentrically surrounded by a sieve drum, which consists of sieve sections of different mesh sizes which follow one another in the longitudinal direction of the drum. After the chippings of different grain sizes have emerged at the discharge end of the inner drum, the chippings enter the annular space between the inner drum with the drum casing closed up to the outlet openings and the sieve drum. For its part, the sieve drum is surrounded by a housing which has a discharge funnel at the lower end. The grit is classified by the sieve drum and passed through the discharge hopper for further processing. The further processing takes place as for the system described above. This system also achieves a usable result, the constructional and operational effort is reduced, but it is also not possible to reuse the material of old road surfaces with this system.

Aufgabe der vorliegenden Erfindung ist es, die bekannte Anlage in ihren beiden Versionen so zu verbessern, daß der bauliche und betriebliche Aufwand weiter verringert wird und daß insbesondere die Wiederverwendung von alten Straßenbelägen möglich ist.The object of the present invention is to improve the known system in its two versions in such a way that the structural and operational expenditure is further reduced and that in particular the reuse of old road surfaces is possible.

Der Lösung der gestellten Aufgabe dienen die Merkmale der Patentansprüche. Die Erfindung ist nachfolgend anhand der Zeichnung näher erläutert. In der Zeichnung ist eine erfindungsgemäße Mischtrommel mit der Möglichkeit der Zuführung von altem Straßendeckenmaterial schematisch dargestellt.The features of the claims serve to solve the problem. The invention is explained below with reference to the drawing. In the drawing, a mixing drum according to the invention with the possibility of feeding old road surface material is shown schematically.

In einem feststehenden Gehäuse 1 ist eine Trommel 2 mit horizontaler Längsachse 3 um diese Längsachse drehbar gelagert. In die Trommel 2 ragt von dem in der Darstellung linken Trommelende aus ein Brenner 4, dessen Flammenlängsachse mit der Trommellängsachse 3 zusammenfällt. Der Brenner kann grundsätzlich beliebiger Art und mit Gas oder Öl zu betreiben sein. Der Antrieb der Trommel 2 erfolgt von einem nicht dargestellten Motor aus über ein Getriebe, das einen die Trommel umgebenden, fest mit dieser verbundenen Laufring 5 einschließt. Am unteren Ende sind an das Gehäuse 1 mehrere sogenannte Heißsilos 6, in Trommellängsrichtung aufeinanderfolgend angeordnet. Diese Heißsilos sind gegen Temperaturabstrahlung weitgehend isolierte trichterförmige Behälter, die aus der Trommel 1 austretenden Splitt unterschiedlicher Partikelgröße, in noch zu beschreibender Weise mit Bitumen bzw. Asphalt vermischt aufzunehmen und ihn zur weiteren Verarbeitung auf ein Förderband aufgeben.In a fixed housing 1 there is a drum 2 with a horizontal longitudinal axis 3 rotatably supported about this longitudinal axis. A burner 4, whose longitudinal flame axis coincides with the longitudinal drum axis 3, projects into the drum 2 from the left drum end in the illustration. In principle, the burner can be of any type and can be operated with gas or oil. The drum 2 is driven by a motor (not shown) via a gear unit which includes a race 5 surrounding the drum and firmly connected to it. At the lower end, a plurality of so-called hot silos 6 are arranged one after the other in the longitudinal direction of the drum on the housing 1. These hot silos are funnel-shaped containers that are largely insulated from temperature radiation and that contain the chippings of different particle sizes that emerge from the drum 1, mixed with bitumen or asphalt in a manner to be described below, and place them on a conveyor belt for further processing.

Um die Klassierung des Gutes vornehmen zu können, sind in Trommellängsrichtung aufeinanderfolgend Rundsiebe 7 auf der Trommel 2 angeordnet derart, daß zwischen dem Mantel der Trommel 2 und den Rundsieben 7 ein Ringraum 8 besteht. Die Rundsiebe haben unterschiedliche Maschenweiten, wobei sich das Rundsieb 7a mit der größten Maschenweite an dem in der Zeichnung rechten, das Rundsieb 7d mit der kleinsten Maschenweite sich an dem in der Zeichnung linken Ende der Trommel 2 befindet. Der Ringraum 8 steht mit dem Innenraum der Trommel 2 über Öffnungen 9 in Verbindung, die an dem in der Zeichnung linken Trommelende gleichmäßig auf den Trommelumfang verteilt sind.In order to be able to classify the material, circular screens 7 are arranged in succession in the longitudinal direction of the drum on the drum 2 such that an annular space 8 exists between the jacket of the drum 2 and the circular screens 7. The circular sieves have different mesh sizes, the circular sieve 7a with the largest mesh size being on the right in the drawing, the circular sieve 7d with the smallest mesh size being on the left end of the drum 2 in the drawing. The annular space 8 communicates with the interior of the drum 2 via openings 9 which are evenly distributed over the drum circumference at the drum end on the left in the drawing.

Beim Betrieb der Anlage wird nun an beiden Trommelenden unterschiedliches Gut über je eine Aufgabevorrichtung 10 und 11 in die Trommel 2 eingegeben. Über die Vorrichtung 10 am rechten, dem Brenner 4 abgekehrten Ende der Trommel wird neues Gut im kalten Zustand, also insbesondere Splitt unterschiedlicher Körnung in die Trommel eingegeben und dieses Gut wandert der Flamme des Brenners 4 entgegen und wird dabei auf die gewünschte Temperatur aufgeheizt. Über die Vorrichtung 11 am Trommelende des Brenners 4 wird Altasphalt in die Trommel eingegeben. Die Vorrichtung 11 ist so auszubilden und anzuordnen, daß der Altasphalt zwar auf die gewünschte Temperatur erwärmt, dabei aber nicht entflammt wird und zum Brennen kommt. Die Eingabehutze 11a ist deshalb durch die Flammzone des Brenners 4 gcführt und befindet sich mit ihrer Austrittsöffnung llb unterhalb der Flammzone und ist nach unten gerichtet. Eine Mischung zwischen dem über die Vorrichtung 11 eingebrachten Altasphalt und dem über die Vorrichtung 10 eingebrachten frischen Gut findet im Bereich der Austragöffnungen 9 statt, der Altasphalt wird weniger unmittelbar durch den Brenner 4 als mittelbar durch die Führung der Hutze ]la durch die Flammzonc und durch Wärmeaufnahme aus dem frischen Gut erwärmt. ein Entzünden des Asphaltes ist weitestgehend ausgeschlossen. Der Altasphalt befindet sich relativ kurze Zeit in der Mischtrommel, wird ohne unmittelbare Flammenberührung erwärmt und während des Erwärmens gut mit dem vom anderen Trommelende kommenden erwärmten Splitt gemischt. Das Gemisch aus Altasphalt und Splitt gelangt durch die Öffnungen 9 hindurch in den Ringraum 8 und von dort, klassiert nach der jeweiligen Splittgröße, in die Heißsilos 6 und kann diesen für die Weiterverarbeitung entnommen werden.During operation of the system, different material is now input into the drum 2 at both drum ends via a respective feed device 10 and 11. Via the device 10 at the right end of the drum facing away from the burner 4, new material is introduced into the drum in the cold state, in particular chippings of different grain sizes, and this material migrates towards the flame of the burner 4 and is heated to the desired temperature. Old asphalt is fed into the drum via the device 11 at the end of the burner 4. The device 11 is to be designed and arranged in such a way that the old asphalt is heated to the desired temperature, but is not ignited and burns. The input scoop 11a is therefore led through the flame zone of the burner 4 gc and is located with its outlet opening 11b below the flame zone and is directed downward. A mixture between the old asphalt introduced via the device 11 and the fresh material introduced via the device 10 takes place in the area of the discharge openings 9, the old asphalt is less directly through the burner 4 than indirectly through the guidance of the scraper through the flame zone and through Heat absorption from the fresh goods warmed. a Ignition of the asphalt is largely impossible. The old asphalt is in the mixing drum for a relatively short time, is heated without direct contact with the flame, and is mixed well with the chippings coming from the other end of the drum during the heating process. The mixture of old asphalt and grit passes through the openings 9 into the annular space 8 and from there, classified according to the size of the grit, into the hot silos 6 and can be removed for further processing.

Der Staub- und Feuchtigkeitsaustrag erfolgt durch einen Abgaskamin 19 am Trommelende der Aufgabevorrichtung 10.The dust and moisture are discharged through an exhaust stack 19 at the drum end of the feed device 10.

Claims (5)

1. Vorrichtung zum Erwärmen, Durchmischen und Klassieren von zur Herstellung von Straßenbelag verwendetem Splitt mit einer um ihre Längsachse rotierenden, liegenden Trommel, in der der Splitt zunächst erwärmt und durchmischt wird, um während des Austragens mittels die Trommel umgebender Ringsiebe für die weitere Verarbeitung klassiert zu werden, dadurch gekennzeichnet, daß die Eingabe von Splitt am einen Ende der Trommel (2) entgegen der Richtung des Hcizstrahles eines am anderen Trommelende angebrachten Brenners (4) erfolgt, während an dem dem Brenner zugehörigen Trommelende über eine zweite Aufgabevorrichtung (11) mit dem Splitt zu mischender und zu erwärmender Altasphalt in die Trommel eingegeben wird.1. Device for heating, mixing and classifying grit used for the production of road surface with a lying drum rotating about its longitudinal axis, in which the grit is first heated and mixed in order to be classified for further processing by means of ring sieves surrounding the drum during discharge to, characterized in that the input of chippings at one end of the drum (2) takes place against the direction of the heating beam of a burner (4) attached to the other drum end, while at the drum end associated with the burner via a second feed device (11) the asphalt to be mixed and heated is put into the drum. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Austrittsöffnung (llb) der Aufgabevorrichtung (11) für den Altasphalt außerhalb der Flammzone des Brenners (4) liegt.2. Device according to claim 1, characterized in that the outlet opening (11b) of the feed device (11) for the old asphalt is outside the flame zone of the burner (4). 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Aufgabevorrichtung (11) für den Altasphalt als Krümmer (lla) zu der Austrittsöffnung (llb) führt, der durch die Flammzone des Brenners (4) geführt ist.3. Apparatus according to claim 2, characterized in that the feed device (11) for the old asphalt as a manifold (lla) leads to the outlet opening (llb) which is guided through the flame zone of the burner (4). 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Ringraum (8) zwischen der Trommel (2) und den die Trommel umgebenden Rundsieben (7) über Öffnungen (9) in der Trommelwand mit dem Trommelinneren in Verbindung steht, wobei die Öffnungen im Bereich der Aufgabevorrichtung (11) für den Altasphalt angeordnet sind.4. Device according to one of claims 1 to 3, characterized in that the annular space (8) between the drum (2) and the circular screens surrounding the drum (7) via openings (9) in the drum wall with the drum interior in connection, the openings being arranged in the area of the feed device (11) for the old asphalt. 5. Vorrichtung nach einem der Ansprüche 1 bis 4, gekennzeichnet durch eine Staubaustragvorrichtung (19) an dem Ende der Trommel (2), an dem die Splittaufgabevorrichtung (10) sich befindet.5. Device according to one of claims 1 to 4, characterized by a dust discharge device (19) at the end of the drum (2) on which the split feed device (10) is located.
EP84106601A 1983-06-08 1984-06-07 Device for the preparation of road surfacing material Expired EP0131162B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3320682 1983-06-08
DE19833320682 DE3320682A1 (en) 1983-06-08 1983-06-08 DEVICE FOR THE PREPARATION OF ROAD COVERINGS

Publications (2)

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EP0131162A1 true EP0131162A1 (en) 1985-01-16
EP0131162B1 EP0131162B1 (en) 1986-12-30

Family

ID=6200950

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Application Number Title Priority Date Filing Date
EP84106601A Expired EP0131162B1 (en) 1983-06-08 1984-06-07 Device for the preparation of road surfacing material

Country Status (6)

Country Link
US (1) US4585354A (en)
EP (1) EP0131162B1 (en)
JP (1) JPS6065804A (en)
DE (2) DE3320682A1 (en)
SG (1) SG82489G (en)
YU (1) YU99484A (en)

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DE3801383A1 (en) * 1988-01-19 1989-07-27 Linnhoff Maschinenbau SEVENTH DRUM
WO1990006400A1 (en) * 1988-12-07 1990-06-14 Wibau Maschinen Gmbh & Co. Kg Drying and sorting device for granular bulk materials

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JPS62253805A (en) * 1986-04-25 1987-11-05 大成ロテック株式会社 Batchwise composite material manufacturing plant using bitumenous paving waste material
US4797002A (en) * 1986-06-23 1989-01-10 Standard Havens, Inc. Apparatus for mixing asphalt compositions
US5021150A (en) * 1989-01-18 1991-06-04 Buerklin Werner Sieve drum for sieving out waste or the like
US5073030A (en) * 1990-01-25 1991-12-17 Banks Edgar N Drum apparatus for mixing asphalt compositions
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US6446812B1 (en) * 1999-11-19 2002-09-10 Glenn Springs Holdings, Inc. Removal of elemental phosphorus from mixtures with other solids
US6874713B2 (en) * 2002-08-22 2005-04-05 Dow Corning Corporation Method and apparatus for improving silicon processing efficiency
US20070070801A1 (en) * 2005-09-23 2007-03-29 Cedarapids, Inc. Pre-combustion mix drum
US8220982B2 (en) 2008-07-22 2012-07-17 Terex Usa, Llc Energy efficient asphalt plant
CA2921597C (en) * 2015-02-24 2023-03-21 Vermeer Manufacturing Company Trommel screen with different sized apertures

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WO1990006400A1 (en) * 1988-12-07 1990-06-14 Wibau Maschinen Gmbh & Co. Kg Drying and sorting device for granular bulk materials

Also Published As

Publication number Publication date
JPS6065804A (en) 1985-04-15
EP0131162B1 (en) 1986-12-30
DE3461840D1 (en) 1987-02-05
SG82489G (en) 1990-09-21
JPH0259882B2 (en) 1990-12-13
US4585354A (en) 1986-04-29
YU99484A (en) 1987-10-31
DE3320682A1 (en) 1984-12-13

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