DE202010014959U1 - Building materials Recyclingsieb - Google Patents

Abstract

Apparatus for classifying at least one building material recycling material type, comprising a non-biased coverslip (a) resting on support elements, characterized in that the screening deck is directly connected to a support beam (b), resting on a screening machine base frame and has a base tilt, so that the screenings is excited to the separation movement over the sieve plate.

Description

The invention relates to a building material recycling screen, by means of which expansion asphalt and mineral construction waste in a defined grain size can be economically separated. The screening plant is preferably used for the production of recycled aggregates in the building materials industry.

State of the art

• • Brecher und Siebmaschinen als spezielle Bearbeitungseinheiten, z. B. Recycling-Granulatoren (Brecher, Schwingsiebmaschine, Aufgabevorrichtung und Gut-Verteilerband), die allerdings zu hohen spezifischen Erzeugungskosten führen
• • brechen in Auftragsleistung und sieben am Mischplatz mit mobiler Siebanlage

The recovery of the RC material is usually done by canceling, breaking up or milling. When breaking down or breaking up, a heterogeneous grain mixture is produced. This must be prepared for further processing to defined grain size (granules). For this, the treatment steps breaking and classifying into two or more grain groups are usually required. The following options are available for this:

• • Crushers and screening machines as special processing units, eg. As recycling granulators (crusher, vibrating screen, feeder and good distribution belt), however, lead to high specific production costs
• • break in order and seven at the mixing station with mobile screen

Known building material classifying machines (screening machines) are moving gratings, drum screening machines and vibrating screening machines. In construction site operation, the vibrating screening machine is used for processing the recycled material.

Various designs of vibrating screens are known. They consist of the sieve box with sieve lining as separating surface, the or the oscillating drives and the elastic support (springs) to the machine base. To stimulate the separation movement of the goods on the sieve bottom of the vibrating screens in so-called litter screens of the sieve box (dynamic) is energized, the usual operating mode.

There are also Schwingsiebmaschinen with excitement of Siebbelages known (ram vibrating screens, tensioning shaft vibrating screens). The Siebodenbewegung is here generated by structurally complex mechanical devices, which also affects the movement of material.

So that the separation of recycled aggregates in the building materials industry can be economically advantageous by means of the device according to the invention, it is advantageous if Siebanlagen be introduced with simple, one-sided open frame solutions with direct support of a frameless sieve. The sieve plate is directly connected to an exciter beam, which is the carrier of the vibration motors or the vibration motor and stimulates the separating movement of the screenings along the sieve plate and supports the direct dynamic excitation of the sieve plate with RC material. The Eindeck direct screen is covered by an adjustable coarse material pre-separation.

In conjunction with the open frame construction and the freely accessible, non-prestressed screen deck, the screened cover exchange is simplified in the event of wear or intentional grain size change in comparison to known solutions.

embodiment

The invention will be explained in more detail below with reference to a preferred embodiment. The only Fig. Shows a schematic representation of a device according to the invention in two views.

• • Eindeck-Direktsieb (a) mit Grobgut-Vorabscheidung (d), abgestützt auf einer Rahmen-Grundkonstruktion (e). Die Gutaufgabe auf den Siebboden kann mittels einer Lademaschine von der Vorderfront oder Hinterfront der Anlage erfolgen. Überkorn wird von der einstellbaren Einrichtung zum Grobgut-Vorabscheiden zum Überlauf gebracht.
• • Die Trennbewegung des Siebgutes auf dem Siebboden beginnt auf der geneigten Siebfläche durch Schwerkraftwirkung und dynamisch unterstützt durch Direkterregung des Siebbodens/Siebgutes über Siebbalken (b) und Erreger-Motoren (c). Im offenen Siebmaschinenrahmen (f) mit Neigungsverstellung des Siebbodens (g) auf ca. 25 ... 35° sammelt sich das abgesiebte Gut und kann mittels der Lademaschine entnommen und zum Vorratslager gebracht werden.
• • Eine variable Intervall-Antriebssteuerung der Anlage bei Betrieb/Stillstand in Abhängigkeit der Bedienbewegung der Lademaschine sowie eine dynamische Anpassung des Erregers an das Siebgut (i) ermöglichen einen kostengünstige und ökologische Betriebsweise.
• • Die Anlage ist semimobil und kann mit Lademaschinen umgesetzt werden.

1 shows a schematic view of a device according to the invention with the features:

• • Covered direct screen (a) with coarse material pre-separation (d), supported on a basic frame construction (e). The Gutaufgabe on the sieve plate can be done by means of a loading machine from the front or back of the system. Oversize is overflowed by the settable coarse material pre-separator.
• • The separation movement of the material to be sieved on the sieve bottom begins on the inclined sieve surface by gravity and dynamically supported by direct excitation of the sieve bottom / screen material via sieve bars (b) and exciter motors (c). In the open screening machine frame (f) with tilt adjustment of the sieve bottom (g) to about 25 ... 35 ° collects the sieved Good and can be removed by means of the loading machine and brought to the storage.
• • A variable interval drive control of the system during operation / standstill depending on the operating movement of the loading machine as well as a dynamic adaptation of the exciter to the screenings (i) enable cost-effective and ecological operation.
• • The system is semi mobile and can be used with loading machines.

Claims (8)

Apparatus for classifying at least one building material recycling material type, comprising a non-biased coverslip (a) resting on supporting elements, characterized in that the screening deck is directly connected to a carrier beam (b), resting on a screening machine base frame and has a basic inclination, so that the screenings are excited to the separation movement on the sieve plate. Apparatus according to claim 1, characterized in that the carrier beam is caused to vibrate at least with a force-excitation machine (c), so that the separation movement of the material to be screened over the sieve tray is effectively excited. Apparatus according to claim 1, characterized in that the Eindeck direct screen works with a demand adjustable Grobgut pre-separation (d) combined, whereby the screening process can be effectively. Apparatus according to claim 1, characterized in that the screening deck is supported on an open, semi-mobile screening machine base frame (s). Device according to one of the preceding claims, characterized in that the non-prestressed screen deck through the open base frame construction (f) is freely accessible, whereby the Siebdecktausch is simplified when worn or grain size change. Device according to one of the preceding claims, characterized in that the inclination adjustment of the sieve plate to about 25 ... 35 ° by base frame adjustment is possible (g). Device according to one of the preceding claims, characterized in that the semi-mobile plant has stop devices (h), whereby it can be implemented operationally with loading machines. Device according to one of the preceding claims, characterized in that an interval drive control of the system during operation / standstill depending on the operating movement of the loading machine and the adaptation of the force path to the screenings allow minimized process energy expenditure (i).

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