WO1997005766A1 - Device for processing the grass cuttings produced by a lawn mower - Google Patents

Device for processing the grass cuttings produced by a lawn mower Download PDF

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Publication number
WO1997005766A1
WO1997005766A1 PCT/EP1996/003395 EP9603395W WO9705766A1 WO 1997005766 A1 WO1997005766 A1 WO 1997005766A1 EP 9603395 W EP9603395 W EP 9603395W WO 9705766 A1 WO9705766 A1 WO 9705766A1
Authority
WO
WIPO (PCT)
Prior art keywords
processing
clippings
grass cuttings
grass
lawn mower
Prior art date
Application number
PCT/EP1996/003395
Other languages
German (de)
French (fr)
Inventor
Gregor Wolf
Original Assignee
Wolf-Geräte Gmbh Vertriebsgesellschaft Kg
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 Wolf-Geräte Gmbh Vertriebsgesellschaft Kg filed Critical Wolf-Geräte Gmbh Vertriebsgesellschaft Kg
Priority to EP96927653A priority Critical patent/EP0841846B1/en
Priority to DE59601307T priority patent/DE59601307D1/en
Publication of WO1997005766A1 publication Critical patent/WO1997005766A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
    • F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
    • F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy

Definitions

  • DE-OS 40 39 458 shows a mowing comminution device for reducing the volume and weight by means of an electrically heated heating device which is operated as a cutting tool heated by electrical resistance heating.
  • the clippings which are burned by a grid formed by electrical heating conductors at the separation points with the heating conductor are burned, thus reducing their weight.
  • the parts shredded by burning at the separation points are collected in a container.
  • the volume and weight of the clippings are reduced, but at the expense of a large amount of energy and under the smell caused by the combustion.
  • DE-OS 43 32 430 describes a lawn mower with a motor-driven mower and a device downstream thereof for comminuting and dewatering the crop, the apparatus for comminuting and juicing the crop being equipped with an effective crop feed device and together with this as an independent unit, e.g. in exchange for a common grass collecting container, which can be connected to the lawn mower.
  • the dewatering takes place after the crushing by a pressing process using a press screw.
  • the crop that is treated in this way is deposited on the side of the lawn.
  • This device is extraordinarily heavy and complex, a separate drive motor having to be provided for the shredding and juicing device. Without an additional wheel drive, this lawn mower can only be operated with great effort.
  • the invention has for its object to provide a device, in particular for the home garden owner, with which the grass clippings obtained when necessary are processed immediately after the mowing process in a simple and energy-saving manner in such a way that it is stored in a space-saving manner without odor nuisance or on the Lawn area can be returned.
  • the stated object is achieved by the features specified in the characterizing part of patent claim 1.
  • the furnace which is structurally connected to a shredder, ensures that when the shredding tools are reached, the clippings filled in the feed hopper have a degree of drying with which the volume is reduced by approximately 80% before the shredding work is done .
  • FIG. 1 shows a flow diagram of the device according to FIG. 2;
  • FIG. 2 shows a schematic view of the device according to the invention.
  • FIG. 1 schematically shows a conventional shredder device with an inlet hopper 10, which is followed by a continuous microwave oven 12 designed as a tunnel oven. The material dried in this oven is shredded by the shredder tools in the part 14 underneath and can then be mixed with fertilizer or stored or pressed in the form obtained.

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  • Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Biotechnology (AREA)
  • Molecular Biology (AREA)
  • Fertilizers (AREA)
  • Processing Of Solid Wastes (AREA)
  • Harvester Elements (AREA)

Abstract

The invention relates to the processing of the grass cuttings produced when mowing lawns, the method proposed calling for the grass to be first dried and then shredded. The drying stage can be carried out in a microwave or circulating-air oven. The product thus obtained can then be compressed into solid pellets. The method makes it possible to add a fertilizer and/or growth promoter to the grass cuttings, and to spread the product obtained after processing on the lawn again after mowing.

Description

Vorrichtung zur Aufbereitung von Rasenmäher-Schnittgut Device for processing lawnmower clippings
Für die meisten Heimgartenbesitzer, aber auch für manche ge¬ werblichen Betriebe, stellt das im Fangkorb des Rasenmähers anfallende Schnittgut ein Problem dar, weil oft nicht der Raum zur Kompostierung des wiederholt anfallenden Schnitt- gutes vorhanden ist und zudem häufig eine unerwünschte Ge- ruchsbelästigung auftritt. Diese Nachteile können, wie in der Landwirtschaft üblich, dadurch vermieden werden, daß das Schnittgut auf der Rasenfläche getrocknet und das Heu weiter¬ verarbeitet wird. Dieses Verfahren erweist sich für den Gar¬ tenbesitzer im allgemeinen als unzumutbar, insbesondere auch deshalb, weil ihm die Gartengeräte-Hersteller Rasenmäher zur Verfügung stellen, die das mühsame Einsammeln des Schnittgutes überflüssig machen, so daß das Schnittgut bequem an einer be¬ stimmten Stelle zur Kompostierung abgelegt werden kann. Zur Beschleunigung der Kompostierung sind im Handel Mittel erhält- lieh, die die durch den Mikroorganismus bewirkte Kompostie¬ rung beschleunigen. Die Kompostierungszeit wird hierdurch zwar verkürzt, jedoch ist immer noch eine monatelange Zwischenla¬ gerung auf dem Komposthaufen erforderlich, ehe der entstehende Humus weiterverarbeitet werden kann.For most home garden owners, but also for some commercial operations, the clippings in the lawnmower's grass catcher are a problem because there is often not enough space to compost the clippings that occur repeatedly and, moreover, there is often an undesirable odor nuisance . As is common in agriculture, these disadvantages can be avoided by drying the clippings on the lawn and further processing the hay. This method generally proves to be unreasonable for the garden owner, in particular also because the garden tool manufacturers provide him with lawnmowers which make the laborious collection of the clippings superfluous, so that the clippings are conveniently taken to a certain point Composting can be filed. To accelerate the composting, means are available commercially that accelerate the composting brought about by the microorganism. The composting time is thereby shortened, but a month-long intermediate storage on the compost heap is still required before the resulting humus can be processed further.
Neuerdings hat man versucht, das Problem dadurch zu lösen, daß für den einzelnen Gartenbesitzer Biotonnen aufgestellt werden, in die u.a. auch der Grasschnitt eingefüllt werden kann, und deren Inhalt dann einer zentralen Kompostierungsanlage zuge- führt wird.Attempts have recently been made to solve the problem by installing bio-bins for the individual garden owner, in which, among other things, the grass clippings can also be filled in and the contents are then fed to a central composting plant.
Diese Art der Entsorgung ist außerordentlich zeit- und arbeits¬ aufwendig. Die DE-OS 40 39 458 zeigt eine Mähgut-Zerkleinerungsvσrrichtung zum Verkleinern des Volumens und des Gewichtes durch eine elektrisch beheizbare Heizvorrichtung, die als Schneidtrenn¬ werkzeug durch elektrische Widerstandsheizung geheizt betrieben ist. Dabei wird das Schnittgut, das durch ein von elektrischen Heizleitern gebildete Gitter an den Trennstellen mit dem Heiz¬ leiter verbrannt und so sein Gewicht reduziert. Die durch Ver- brennung an den Trennstellen zerkleinerten Teile werden in einem Behälter gesammelt. Hierdurch werden zwar Volumen und Gewicht des Schnittmähguts vermindert, jedoch auf Kosten eines großen Energieaufwandes und unter Geruchsbelästigung infolge der Verbrennung.This type of disposal is extremely time-consuming and labor-intensive. DE-OS 40 39 458 shows a mowing comminution device for reducing the volume and weight by means of an electrically heated heating device which is operated as a cutting tool heated by electrical resistance heating. In this case, the clippings which are burned by a grid formed by electrical heating conductors at the separation points with the heating conductor are burned, thus reducing their weight. The parts shredded by burning at the separation points are collected in a container. As a result, the volume and weight of the clippings are reduced, but at the expense of a large amount of energy and under the smell caused by the combustion.
Die DE-OS 43 32 430 beschreibt einen Rasenmäher mit einem motorisch angetriebenen Mähwerk und einer diesem nachgeschal¬ teten Einrichtung zum Zerkleinern und Entwässern des Mähgutes, wobei die Einrichtung zum Zerkleinern und Entsaften des Mäh- gutes mit einer wirksamen Mähgut-Zuführungseinrichtung ausge¬ stattet und zusammen mit dieser als eigenständige Baueinheit, z.B. im Austausch gegen einen üblichen Grassammelbehälter, an den Rasenmäher anschließbar ausgebildet ist. Die Entwässerung erfolgt dabei nach der Zerkleinerung durch einen Preßvorgang mittels einer Preßschnecke. Das so behandelte Mähgut wird seit¬ lich auf dem Rasen abgelegt. Diese Vorrichtung ist außerordent¬ lich schwer und aufwendig, wobei für die Zerkleinerungs- und Entsaftungseinrichtung ein eigener Antriebsmotor vorzusehen ist. Ohne zusätzlichen Radantrieb ist dieser Rasenmäher nur mit großer Kraftanstrengung zu bedienen.DE-OS 43 32 430 describes a lawn mower with a motor-driven mower and a device downstream thereof for comminuting and dewatering the crop, the apparatus for comminuting and juicing the crop being equipped with an effective crop feed device and together with this as an independent unit, e.g. in exchange for a common grass collecting container, which can be connected to the lawn mower. The dewatering takes place after the crushing by a pressing process using a press screw. The crop that is treated in this way is deposited on the side of the lawn. This device is extraordinarily heavy and complex, a separate drive motor having to be provided for the shredding and juicing device. Without an additional wheel drive, this lawn mower can only be operated with great effort.
Der Erfindung liegt die Aufgabe zugrunde, eine, insbesondere für den Heimgartenbesitzer, geeignete Vorrichtung zu schaffen, mit der das beim Rasenmähen anfallende Schnittgut bei Bedarf sofort nach dem Mähvorgang auf einfache und energiesparende Weise derart aufbereitet wird, daß es ohne Geruchsbelästigung raumsparend gelagert oder auf die Rasenfläche zurückgeführt werden kann. Gelöst wird die gestellte Aufgabe durch die im Kennzeichnungs- teil des Patentanspruchs 1 angegebenen Merkmale. Durch den baulich mit einem Schredder verbundenen Ofen wird gewährlei- stet, daß das in desssen Einlauftrichter eingefüllte Schnitt¬ gut beim Erreichen der Zerkleinerungswerkzeuge einen Trocknungs¬ grad besitzt, mit dem das Volumen bereits um ca. 80 % reduziert ist, bevor die Zerkleinerungsarbeit geleistet wird.The invention has for its object to provide a device, in particular for the home garden owner, with which the grass clippings obtained when necessary are processed immediately after the mowing process in a simple and energy-saving manner in such a way that it is stored in a space-saving manner without odor nuisance or on the Lawn area can be returned. The stated object is achieved by the features specified in the characterizing part of patent claim 1. The furnace, which is structurally connected to a shredder, ensures that when the shredding tools are reached, the clippings filled in the feed hopper have a degree of drying with which the volume is reduced by approximately 80% before the shredding work is done .
Beim Durchlaufen des Ofens kann in kürzester Zeit ein Trock- nungsgrad erreicht werden, der die Weiterverarbeitung durch Schreddem und/oder Pressen möglich macht.When passing through the furnace, a degree of drying can be achieved in a very short time, which enables further processing by shredding and / or pressing.
Eine zweckmäßige Ausgestaltung der Vorrichtung ergibt sich aus Anspruch 2. Hierdurch wird ohne zusätzliche Fördervorrichtung ein automatischer Verfahrensablauf gewährleistet.An expedient embodiment of the device results from claim 2. This ensures an automatic process sequence without an additional conveying device.
In der beiliegenden Zeichnung ist ein Ausfuhrungsbeispiel der Erfindung dargestellt. In der Zeichnung zeigen:An exemplary embodiment of the invention is shown in the accompanying drawing. The drawing shows:
Fig. 1 ein Flußdiagramm der Vorrichtung gemäß Fig. 2;FIG. 1 shows a flow diagram of the device according to FIG. 2;
Fig. 2 eine schematische Ansicht der erfindungsge¬ mäßen Vorrichtung.2 shows a schematic view of the device according to the invention.
Wie aus Fig. 1 ersichtlich, wird das Schnittgut in einen Ein¬ laß, beispielsweise einen Einlaßtrichter, gefüllt und einer Entwässerung unterworfen. Danach wird das getrocknete Produkt geschreddert, und während des Schreddervorganges oder danach wird Dünger oder ein Wachstumsmittel zugesetzt, worauf eine Vermischung stattfindet. Danach kann das so aufbereitete Gut auf die Rasenfläche ausgetragen oder zur späteren Verwendung gelagert werden. Fig. 2 zeigt schematisch eine übliche Schreddervorrichtung mit einem Einlauftrichter 10, dem ein als Tunnelofen ausgebil¬ deter Durchlauf-Mikrowellenofen 12 nachgeschaltet ist. Das in diesem Ofen getrocknete Gut wird durch die Schredderwerkzeuge im darunterliegenden Teil 14 zerkleinert und kann dann mit Dünger versetzt oder auch in der anfallenden Form gelagert oder verpreßt werden. As can be seen from FIG. 1, the clippings are filled into an inlet, for example an inlet funnel, and subjected to dewatering. The dried product is then shredded and fertilizer or a growth agent is added during or after the shredding process, after which mixing takes place. Then the prepared material can be discharged onto the lawn or stored for later use. FIG. 2 schematically shows a conventional shredder device with an inlet hopper 10, which is followed by a continuous microwave oven 12 designed as a tunnel oven. The material dried in this oven is shredded by the shredder tools in the part 14 underneath and can then be mixed with fertilizer or stored or pressed in the form obtained.

Claims

Patentansprüche: Claims:
1. Vorrichtung zur Aufbereitung des beim Rasenmähen im Fangkorb des Rasenmähers anfallenden Schnittgutes mit einem1. Device for processing the clippings obtained when mowing the lawn in the lawnmower grass catcher with a
Schredder zur Zerkleinerung des Schnittgutes, dadurch gekennzeichnet, daß dem Einlauftrichter (10) des Schredders (14) ein Mikrowellenofen (12) oder ein Umluftofen zur Dehydrierung des Schnittgutes nachgeschaltet ist.Shredder for comminuting the clippings, characterized in that the inlet hopper (10) of the shredder (14) is followed by a microwave oven (12) or a circulating air oven for dehydrating the clippings.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Heizleistung des als Tunnelofen ausgebildeten Ofens derart bemessen ist, daß beim Durchsatz des Ofens mittels Schwerkraft der erwünschte Trocknungsgrad er- reicht wird. 2. Apparatus according to claim 1, characterized in that the heating power of the furnace designed as a tunnel furnace is dimensioned such that the desired degree of drying is achieved by gravity throughput of the furnace.
PCT/EP1996/003395 1995-08-03 1996-08-01 Device for processing the grass cuttings produced by a lawn mower WO1997005766A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP96927653A EP0841846B1 (en) 1995-08-03 1996-08-01 Device for processing the grass cuttings produced by a lawn mower
DE59601307T DE59601307D1 (en) 1995-08-03 1996-08-01 DEVICE FOR THE PREPARATION OF LAWN MOWER CUT

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19528591.3 1995-08-03
DE19528591A DE19528591C2 (en) 1995-08-03 1995-08-03 Device for processing lawnmower clippings

Publications (1)

Publication Number Publication Date
WO1997005766A1 true WO1997005766A1 (en) 1997-02-20

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ID=7768634

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/003395 WO1997005766A1 (en) 1995-08-03 1996-08-01 Device for processing the grass cuttings produced by a lawn mower

Country Status (4)

Country Link
EP (1) EP0841846B1 (en)
AT (1) ATE176569T1 (en)
DE (2) DE19528591C2 (en)
WO (1) WO1997005766A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1922522A1 (en) * 1969-05-02 1970-11-12 Harlacher Benedikt Shredders and dryers especially for grass flour
DE3228730A1 (en) * 1982-07-31 1984-05-03 geb. Spilker Annemarie 6349 Mademuehlen Ulbrich Process and apparatus for the drying and recovery of freshly mown grass
US5060459A (en) * 1990-11-20 1991-10-29 Herron Harold S Hay conditioning unit
JPH0440818A (en) * 1990-06-08 1992-02-12 Koyo Ishikawa Lawn mower
DE4039458A1 (en) * 1990-12-11 1992-06-17 Hessabi Iradj Mown material redn. system for reducing vol and wt. of mown cut material - uses electrically heated heat conducting grid which is heated by electric resistance heating which can be arranged on movable mowing unit
EP0526763A2 (en) * 1991-07-12 1993-02-10 HS Technik und Design Technische Entwicklungen GmbH Lawn mower
DE4332430A1 (en) * 1993-09-14 1995-03-16 Ball Wilfried Mowing machine, especially lawnmower

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3039595A1 (en) * 1980-10-21 1982-05-19 Werner 5620 Velbert Doppstadt Road verge mowing machine - has head discharging grass into baling mechanism

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1922522A1 (en) * 1969-05-02 1970-11-12 Harlacher Benedikt Shredders and dryers especially for grass flour
DE3228730A1 (en) * 1982-07-31 1984-05-03 geb. Spilker Annemarie 6349 Mademuehlen Ulbrich Process and apparatus for the drying and recovery of freshly mown grass
JPH0440818A (en) * 1990-06-08 1992-02-12 Koyo Ishikawa Lawn mower
US5060459A (en) * 1990-11-20 1991-10-29 Herron Harold S Hay conditioning unit
DE4039458A1 (en) * 1990-12-11 1992-06-17 Hessabi Iradj Mown material redn. system for reducing vol and wt. of mown cut material - uses electrically heated heat conducting grid which is heated by electric resistance heating which can be arranged on movable mowing unit
EP0526763A2 (en) * 1991-07-12 1993-02-10 HS Technik und Design Technische Entwicklungen GmbH Lawn mower
DE4332430A1 (en) * 1993-09-14 1995-03-16 Ball Wilfried Mowing machine, especially lawnmower

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 16, no. 213 (C - 0942) *

Also Published As

Publication number Publication date
EP0841846B1 (en) 1999-02-10
DE59601307D1 (en) 1999-03-25
ATE176569T1 (en) 1999-02-15
DE19528591C2 (en) 1998-04-30
EP0841846A1 (en) 1998-05-20
DE19528591A1 (en) 1997-02-06

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