EP0514370A2 - Method and device for extracting by suction foreign matter from a stream of bulk material - Google Patents
Method and device for extracting by suction foreign matter from a stream of bulk material Download PDFInfo
- Publication number
- EP0514370A2 EP0514370A2 EP92890113A EP92890113A EP0514370A2 EP 0514370 A2 EP0514370 A2 EP 0514370A2 EP 92890113 A EP92890113 A EP 92890113A EP 92890113 A EP92890113 A EP 92890113A EP 0514370 A2 EP0514370 A2 EP 0514370A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- bulk material
- material flow
- nozzle
- conveyor
- conveying device
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/04—Control arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
Definitions
- the invention relates to a method for extracting foreign bodies from a bulk material flow, and an apparatus for performing this method.
- This conveyor can be designed as a conveyor trough, conveyor chute or sieve.
- the transport takes place either via the inclined conveyor by means of gravity or according to the vibratory conveyor principle.
- the object of the present invention is to provide a method for extracting foreign bodies from a bulk material flow with which high degrees of separation can be achieved with large throughput quantities. Furthermore, an apparatus for carrying out the method is to be proposed.
- the suction is not only limited to the bulk material flow transported from a conveying device, but also includes the parts in free fall. Naturally, suction is also carried out at the outlet edge of the nozzle, so that the material flow located on the further conveying device is also subjected to cleaning. It is obvious that the material flow is shifted by falling from the first conveying device to the further conveying device, so that now other particles lie on the surface and are subjected to suction.
- the invention further relates to a device for extracting foreign bodies from a bulk material flow with a conveyor for transporting the bulk material stream and a nozzle arranged essentially above the conveyor for suctioning the foreign bodies.
- the conveyor device has a discharge edge in the region of the nozzle and that a further conveyor device is provided for transporting the discharged bulk material flow.
- conveyor devices can be designed as conveyor troughs, conveyor chutes or sieves.
- the discharge edge can be designed as a small elevation in order to control the discharge of the bulk material flow.
- the nozzle has a flap which is variable in height on the side of the incoming bulk material flow.
- the height of the flap can be adjusted to the bulk material flow manually or automatically.
- the nozzle has a pivotable flap on the side of the bulk material flow being transported away.
- the flap is pulled inwards by the negative pressure in the nozzle.
- the device according to the invention consists of a first conveyor device 1 which is provided with a discharge edge 2 at its end.
- a further conveyor device 3 is arranged below this conveyor device 1.
- a suction nozzle 4 is provided in the region of the discharge edge 2.
- the nozzle 4 has a flap 5 on the side of the incoming material flow which is adjustable in height b. on the opposite side a further flap 6 is provided, which is designed to be pivotable about a point 6a and is therefore also adjustable in height a.
- This flap 6 can be designed to swing freely and / or be fastened.
- the air flow sucked in through the nozzle 4 flows through the device in various ways.
- the device according to the invention is designed such that the main part of the air flow is fed through the gap 7 between the first conveyor 1 and the further conveyor 3.
- certain air flows also flow into the nozzle 4 directly under the flaps 5 and 6. due to the adjustability of these flaps 5 and 6, these air flows are to be kept relatively low.
- Another possibility for the air flow is given by the fact that the conveying devices 1 and 3 are designed to be air-permeable in a manner known per se. This can either be due to the fact that vibrating sieves are involved or ventilation slots are provided in the case of conveyor chutes, which forces a certain air flow to also pass through the bulk material flow located on the conveyor device 1 and loosen it up.
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Absaugen von Fremdkörpern aus einem Schüttgutstrom, sowie eine Vorrichtung zur Durchführung dieses Verfahrens.The invention relates to a method for extracting foreign bodies from a bulk material flow, and an apparatus for performing this method.
Es ist in vielen Bereichen der Technik notwendig, aus einem Schüttgutstrom leichtere Bestandteile mittels einer Absaugvorrichtung abzusaugen und somit den Schüttgutstrom zu reinigen. So ist es z.B. bei der Altglasaufbereitung erforderlich, im Förderstrom vorhandene Papierreste oder Aluminiumteile, wie Flaschenkappen auf diese Weise abzuscheiden.In many areas of technology, it is necessary to extract lighter constituents from a bulk material stream by means of a suction device and thus to clean the bulk material stream. So it is e.g. When processing used glass, it is necessary to separate paper residues or aluminum parts such as bottle caps in the flow.
Es sind Vorrichtungen bekannt, bei denen der Schüttgutstrom über eine Fördereinrichtung transportiert wird und unter einer Absaugdüse durchgeführt wird. Diese Fördereinrichtung kann als Förderrinne, Förderrutsche oder Sieb ausgebildet sein. Der Transport erfolgt entweder über die geneigte Fördereinrichtung mittels Schwerkraft oder nach dem Schwingförderprinzip.Devices are known in which the bulk material flow is transported via a conveying device and is carried out under a suction nozzle. This conveyor can be designed as a conveyor trough, conveyor chute or sieve. The transport takes place either via the inclined conveyor by means of gravity or according to the vibratory conveyor principle.
Der Abscheidegrad von solchen bekannten Fördereinrichtungen ist begrenzt, da nur die an der Oberfläche des Schüttgutstromes befindlichen Fremdkörper sicher abgesaugt werden können. Um etwas höhere Abscheidegrade zu erzielen, ist es bei solchen Vorrichtungen erforderlich, nur eine sehr geringe Höhe des Schüttgutstromes zuzulassen, was wiederum der Leistung solcher Vorrichtung enge Grenzen setzt.The degree of separation of such known conveying devices is limited, since only the foreign bodies located on the surface of the bulk material flow can be safely extracted. In order to achieve somewhat higher degrees of separation, it is necessary with such devices to allow only a very low level of the bulk material flow, which in turn places narrow limits on the performance of such devices.
Weiters sind aus der DE-A 37 08 180, der DE-A 37 13 435 oder aus der US-A 4,759,840 Windsichter bekannt, bei denen die Trennung von Stoffgemischen in einem Druckluftstrom erfolgt. In der Altglasaufbereitung haben sich solche Windsichter jedoch nicht durchsetzen können, weil es durch die sehr unregelmäßige Größenverteilung der Glasscherben zu Verstopfungen kommen kann.Furthermore, from DE-A 37 08 180, DE-A 37 13 435 or from US-A 4,759,840 wind sifters are known, in which the mixture of substances is separated in a stream of compressed air. However, such air classifiers have not been able to establish themselves in the recycling of waste glass because the very irregular size distribution of the broken glass can lead to blockages.
Aufgabe der vorliegenden Erfindung ist es, ein Verfahren zum Absaugen von Fremdkörpern aus einem Schüttgutstrom anzugeben mit dem hohe Abscheidegrade bei großen Durchsatzmengen erzielbar sind. Weiters soll eine Vorrichtung zur Durchführung des Verfahrens vorgeschlagen werden.The object of the present invention is to provide a method for extracting foreign bodies from a bulk material flow with which high degrees of separation can be achieved with large throughput quantities. Furthermore, an apparatus for carrying out the method is to be proposed.
Das erfindungsgemäße Verfahren ist durch folgende Schritte gekennzeichnet:
- Transport des Schüttgutstromes über eine Fördereinrichtung zu einer Absaugdüse;
- Abwerfen des Schüttgutstromes über eine Kante der ersten Fördereinrichtung;
- Absaugen der Fremdkörper über die Düse.
- Abtransport des Schüttgutstromes über eine weitere Fördereinrichtung.
- Transport of the bulk material flow via a conveyor to a suction nozzle;
- Throwing the bulk material flow over an edge of the first conveyor;
- Extraction of the foreign bodies through the nozzle.
- Removal of the bulk material flow via another conveyor.
Wesentlich beim erfindungsgemäßen Verfahren ist, daß das Absaugen sich nicht nur auf den aus einer Fördereinrichtung transportierten Schüttgutstrom beschränkt, sondern auch die im freien Fall befindlichen Teile mit erfaßt. Naturgemäß wird auch an der Austrittskante der Düse abgesaugt, sodaß auch der auf der weiteren Fördereinrichtung befindliche Materialstrom einer Reinigung unterzogen wird. Es ist offensichtlich, daß durch das Herabfallen von der ersten Fördereinrichtung auf die weitere Fördereinrichtung eine Umschichtung des Materialstromes erfolgt, sodaß nun andere Teilchen an der Oberfläche liegen und der Absaugung unterworfen sind.It is essential in the method according to the invention that the suction is not only limited to the bulk material flow transported from a conveying device, but also includes the parts in free fall. Naturally, suction is also carried out at the outlet edge of the nozzle, so that the material flow located on the further conveying device is also subjected to cleaning. It is obvious that the material flow is shifted by falling from the first conveying device to the further conveying device, so that now other particles lie on the surface and are subjected to suction.
Weiters ist wichtig, daß das Entfemen der Fremdkörper durch Absaugen und nicht durch Ausblasen erfolgt.It is also important that the foreign bodies are removed by suction and not by blowing.
Die Erfindung betrifft weiters eine Vorrichtung zum Absaugen von Fremdkörpern aus einem Schüttgutstrom mit einer Fördereinrichtung zum Transport des Schüttgutstromes und einer im wesentlichen oberhalb der Fördereinrichtung angeordneten Düse zum Absaugen der Fremdkörper.The invention further relates to a device for extracting foreign bodies from a bulk material flow with a conveyor for transporting the bulk material stream and a nozzle arranged essentially above the conveyor for suctioning the foreign bodies.
Bei der erfindungsgemäßen Vorrichtung ist vorgesehen, daß die Fördereinrichtung im Bereich der Düse eine Abwurfkante aufweist und daß eine weitere Fördereinrichtung zum Transport des abgeworfenen Schüttgutstromes vorgesehen ist.In the device according to the invention it is provided that the conveyor device has a discharge edge in the region of the nozzle and that a further conveyor device is provided for transporting the discharged bulk material flow.
Wie oben bereits ausgeführt, können Fördereinrichtungen als Förderrinnen, Förderrutschen oder Siebe ausgebildet sein. Die Abwurfkante kann als kleine Erhebung ausgebildet sein, um den Abwurf des Schüttgutstromes zu steuern.As already stated above, conveyor devices can be designed as conveyor troughs, conveyor chutes or sieves. The discharge edge can be designed as a small elevation in order to control the discharge of the bulk material flow.
Vorzugsweise ist vorgesehen, daß die Düse auf der Seite des ankommenden Schüttgutstromes eine in ihrer Höhe veränderliche Klappe aufweist. Die Anpassung der Höhe der Klappe an den Schüttgutstrom kann manuell oder automatisch erfolgen.It is preferably provided that the nozzle has a flap which is variable in height on the side of the incoming bulk material flow. The height of the flap can be adjusted to the bulk material flow manually or automatically.
Besonders günstig ist es, wenn die Düse auf der Seite des abtransportierten Schüttgutstromes eine schwenkbare Klappe aufweist. Die Klappe wird dabei vom Unterdruck in der Düse nach innen gezogen. Es ist jedoch für die Klappe möglich, bei größeren Fördermengen oder Vorkommen einzelner, größerer Partikel nach außen hin auszuweichen. Weiters ist es möglich, die Klappe in einer ausgeschwenkten Position festzustellen.It is particularly favorable if the nozzle has a pivotable flap on the side of the bulk material flow being transported away. The flap is pulled inwards by the negative pressure in the nozzle. However, it is possible for the flap to move outwards in the event of larger delivery quantities or the occurrence of individual, larger particles. It is also possible to fix the flap in a swiveled-out position.
Im folgenden wird die Erfindung anhand eines in der Figur dargestellten Ausführungsbeispieles näher erläutert. die Erfindungsgemäße Vorrichtung besteht aus einer ersten Fördereinrichtung 1, die an ihrem Ende mit einer Abwurfkante 2 versehen ist. Unterhalb dieser Fördereinrichtung 1 ist eine weitere Fördereinrichtung 3 angeordnet. Im Bereich der Abwurfkante 2 ist eine Absaugdüse 4 vorgesehen. Die Düse 4 besitzt auf der Seite des ankommenden Materialstroms eine Klappe 5, die in ihrer Höhe b verstellbar ist. auf der gegenüberliegenden Seite ist eine weitere Klappe 6 vorgesehen, die um einen Punkt 6a schwenkbar ausgeführt ist und somit ebenfalls in ihrer Höhe a verstellbar ist. Diese Klappe 6 kann frei schwingend und/oder befestigbar ausgeführt sein.The invention is explained in more detail below on the basis of an exemplary embodiment shown in the figure. the device according to the invention consists of a first conveyor device 1 which is provided with a
Der durch die Düse 4 angesaugte Luftstrom strömt auf verschiedenen Wegen durch die Vorrichtung. Die erfindungsgemäße Vorrichtung ist jedoch so ausgelegt, daß der Hauptteil des Luftstromes durch den Spalt 7 zwischen der ersten Fördereinrichtung 1 und der weiteren Fördereinrichtung 3 zugeführt wird. Es ist jedoch offensichtlich, daß auch gewisse Luftströme unmittelbar unter den Klappen 5 und 6 in die Düse 4 einströmen. durch die Verstellbarkeit dieser Klappen 5 und 6 sollen diese Luftströme jedoch relativ gering gehalten werden. Eine weitere Möglichkeit für die Luftströmung ist dadurch gegeben, daß die Fördereinrichtungen 1 und 3 in an sich bekannter Weise luftdurchlässig ausgeführt sind. Dies kann entweder dadurch geschehen, daß es sich um Schwingsiebe handelt oder es werden im Fall von Förderrutschen Belüftungsschlitze vorgesehen, dadurch wird erzwungen das ein gewisser Luftstrom auch durch den auf der Fördereinrichtung 1 befindlichen Schüttgutstrom hindurchtritt und diesen auflockert.The air flow sucked in through the
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT101091A AT396878B (en) | 1991-05-16 | 1991-05-16 | METHOD FOR SUCTIONING FOREIGN BODIES FROM A BULK FLOW |
AT1010/91 | 1991-05-16 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0514370A2 true EP0514370A2 (en) | 1992-11-19 |
EP0514370A3 EP0514370A3 (en) | 1992-12-30 |
EP0514370B1 EP0514370B1 (en) | 1996-01-03 |
Family
ID=3504850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19920890113 Expired - Lifetime EP0514370B1 (en) | 1991-05-16 | 1992-05-13 | Method and device for extracting by suction foreign matter from a stream of bulk material |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0514370B1 (en) |
AT (1) | AT396878B (en) |
CZ (1) | CZ285671B6 (en) |
DE (1) | DE59204877D1 (en) |
ES (1) | ES2082442T3 (en) |
SK (1) | SK280333B6 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29919773U1 (en) * | 1999-11-11 | 2001-03-22 | Hoecker Polytechnik | Device for separating recyclable waste |
CZ303233B6 (en) * | 2006-01-12 | 2012-06-06 | Výzkumný ústav zemedelské techniky, v.v.i. | Exhaust system |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL52669C (en) * | ||||
DE156328C (en) * | ||||
FR1264532A (en) * | 1960-05-09 | 1961-06-23 | Birtley Soc | Method and apparatus for the treatment of divided solids |
FR2305235A1 (en) * | 1974-10-16 | 1976-10-22 | Nacional Adaro Investiga Empre | INSTALLATION FOR THE SEPARATION OF A HETEROGENOUS PRODUCT INTO TWO FRACTIONS, LIGHT AND HEAVY, SPECIFICALLY INTENDED FOR THE TREATMENT OF HOUSEHOLD WASTE |
DE2527000A1 (en) * | 1975-06-18 | 1976-12-30 | Formmaschinen Gmbh Lufttechnik | Sorter with high speed turbulence nozzle - for comminuted materials with different suspension rates |
DE2636362A1 (en) * | 1975-10-06 | 1977-04-14 | Continental Group | METHOD AND DEVICE FOR PNEUMATICALLY SEPARATING LIGHTER PARTS FROM A FLOW OF PARTICULAR CONTAINING HEAVY PARTS |
US4431530A (en) * | 1980-12-05 | 1984-02-14 | Trutzschler Gmbh & Co. Kg | Apparatus for extracting foreign bodies and heavy parts from fiber material |
US4929342A (en) * | 1988-12-23 | 1990-05-29 | Lenco Machines & Tool Co. | Apparatus and method for separating recyclable materials |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4759840A (en) * | 1985-03-22 | 1988-07-26 | Domtar Inc. | Particle classifier |
DD249646A1 (en) * | 1986-06-04 | 1987-09-16 | Nagema Veb K | AIR SEPARATOR |
DE3708180A1 (en) * | 1987-03-13 | 1988-09-22 | Orenstein & Koppel Ag | DEVICE FOR REPROCESSING RECYCLING MATERIALS, PREFERABLY BUILDING RUBBISH |
-
1991
- 1991-05-16 AT AT101091A patent/AT396878B/en not_active IP Right Cessation
-
1992
- 1992-05-13 DE DE59204877T patent/DE59204877D1/en not_active Expired - Fee Related
- 1992-05-13 ES ES92890113T patent/ES2082442T3/en not_active Expired - Lifetime
- 1992-05-13 EP EP19920890113 patent/EP0514370B1/en not_active Expired - Lifetime
- 1992-05-15 CZ CS921474A patent/CZ285671B6/en not_active IP Right Cessation
- 1992-05-15 SK SK1474-92A patent/SK280333B6/en unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL52669C (en) * | ||||
DE156328C (en) * | ||||
FR1264532A (en) * | 1960-05-09 | 1961-06-23 | Birtley Soc | Method and apparatus for the treatment of divided solids |
FR2305235A1 (en) * | 1974-10-16 | 1976-10-22 | Nacional Adaro Investiga Empre | INSTALLATION FOR THE SEPARATION OF A HETEROGENOUS PRODUCT INTO TWO FRACTIONS, LIGHT AND HEAVY, SPECIFICALLY INTENDED FOR THE TREATMENT OF HOUSEHOLD WASTE |
DE2527000A1 (en) * | 1975-06-18 | 1976-12-30 | Formmaschinen Gmbh Lufttechnik | Sorter with high speed turbulence nozzle - for comminuted materials with different suspension rates |
DE2636362A1 (en) * | 1975-10-06 | 1977-04-14 | Continental Group | METHOD AND DEVICE FOR PNEUMATICALLY SEPARATING LIGHTER PARTS FROM A FLOW OF PARTICULAR CONTAINING HEAVY PARTS |
US4431530A (en) * | 1980-12-05 | 1984-02-14 | Trutzschler Gmbh & Co. Kg | Apparatus for extracting foreign bodies and heavy parts from fiber material |
US4929342A (en) * | 1988-12-23 | 1990-05-29 | Lenco Machines & Tool Co. | Apparatus and method for separating recyclable materials |
Also Published As
Publication number | Publication date |
---|---|
CZ285671B6 (en) | 1999-10-13 |
ATA101091A (en) | 1993-05-15 |
SK280333B6 (en) | 1999-12-10 |
AT396878B (en) | 1993-12-27 |
EP0514370A3 (en) | 1992-12-30 |
CS147492A3 (en) | 1992-11-18 |
EP0514370B1 (en) | 1996-01-03 |
ES2082442T3 (en) | 1996-03-16 |
DE59204877D1 (en) | 1996-02-15 |
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