WO1998052849A1 - Wiper device for cleaning conveyor belts - Google Patents
Wiper device for cleaning conveyor belts Download PDFInfo
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- WO1998052849A1 WO1998052849A1 PCT/EP1998/002735 EP9802735W WO9852849A1 WO 1998052849 A1 WO1998052849 A1 WO 1998052849A1 EP 9802735 W EP9802735 W EP 9802735W WO 9852849 A1 WO9852849 A1 WO 9852849A1
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- scraper
- attached
- rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/10—Cleaning devices
- B65G45/12—Cleaning devices comprising scrapers
Definitions
- the invention relates to a scraper device for cleaning conveyor belts with at least one first scraper bar attached to a support beam, with at least one axle scraper attached to the support bar, which has at least one scraper blade aligned at an angle or also at right angles to the direction of travel of the conveyor belt and attached to support arms, and with an adjustable pressure device that engages the ends of the support beam.
- Scraper devices for cleaning conveyor belts are known in a variety of different designs.
- a stripping device that the applicant has long been using has, for example, a central supporting beam with a hollow square profile, on the long sides of which one, two or even three scraper strips of approximately rectangular cross-section made of a wear-resistant PUR or rubber material, if necessary permanently fixed with hard metal or ceramic inserts are. After wear of a squeegee by simply repositioning the support beam in its adjustable bracket by 90 or 180 ° these can be replaced by an as yet unused squeegee.
- the support beam holder is assigned a pressure device which is mounted on the load-bearing components of the conveyor and, after individual adjustment, generates a certain resilient pressure of the effective scraper strip on the conveyor belt.
- DE 39 15 609 A1 Another device for cleaning conveyor belts is known from DE 39 15 609 A1, which has two supporting beams designed as square hollow profiles, each of which has two scraper strips of rectangular cross section made of PUR material and which are connected to one another by cross struts in the form of a rocker . These cross struts are pivotally mounted at the end of the boom arms, so that two scraper strips can be located in a pressure system on the conveyor belt at the same time.
- EP 0 262 272 A1 discloses a scraper device for conveyor belts, which has a front scraper strip and a scraper blade arranged downstream of it, both of which are positively and releasably attached to a common support beam.
- the scraper bar is made of a suitable PUR material and resiliently rests on the conveyor belt.
- Both scraper elements are fixed with their respective mounting feet in an approximately dovetail-shaped manner in corresponding guide recesses of the supporting beam so that they can be installed and removed in a simple manner.
- the secondary scraper can have a plurality of scraper blades arranged next to each other in a mutual offset, which abut the outer edge with their outer edge and are fastened with their lower part at the end of separate support arms made of PUR material.
- the object of the invention is to provide a stripping device for cleaning conveyor belts which, with a structurally simple and self-contained structure, causes a gentle attack on the conveyor belt in conjunction with a high cleaning effect.
- This object is achieved in that a continuous bar made of a rubber-elastic material, PUR or another elastic plastic is attached to the support beam, on which the angled support arms of the wiper are mounted.
- the scraper device designed according to the invention achieves a particularly intensive cleaning effect, since the first relatively wide continuous scraper strip removes thicker and also coarser adhering substances from the conveyor belt and the secondary scraper, which consists of a large number of individual and separately sprung scraper plates, ensures the final belt cleaning. It is essential that the entire stripping device works with relatively low pressure forces, which means a gentle attack of the two stripping elements on the expensive conveyor belt.
- the small dimensions and the low weight of the stripping device enable simple assembly even at relatively inaccessible operating points, which, for example, enables the replacement of conventional strippers by the improved device according to the invention.
- Another advantage is that possibly worn scraper plates of the secondary scraper together with the respective support arms individually and on easy before they can be replaced.
- the arrangement of the scraper plates of the secondary scraper, each with overlap on both sides, ensures that the conveyor belt is cleaned over a fixed width, the separate resilient mounting of the respective support arm ensuring effective contact of each scraper plate on the conveyor belt.
- the first squeegee has an approximately rectangular cross section and consists of a suitable rubber or plastic material, preferably of PUR with or without fibrous, granular or powdery fillers, which have a favorable effect on the strength or wear behavior.
- the squeegee can also consist of hard metal, ceramic or combinations of materials.
- the service life of the scraper device according to the invention can be significantly extended by an expedient development in which two scraper bars are attached opposite each other on a single supporting beam.
- Figure 1 shows a first embodiment of the stripping device according to the invention in cross section.
- Fig. 2 shows the device of Figure 1 in rear view.
- Fig. 3 shows another embodiment of the stripping device according to the invention in schematic cross section.
- the scraper device shown in Figures 1 and 2 is used to clean a conveyor belt 1 immediately behind a drive or deflection drum 2 and has a first scraper bar 3 of substantially rectangular cross-section and a Nachabstreifer 4, which on a Square hollow profile executed support beam 5 are attached.
- the scraper strip extends across the entire width of the conveyor belt 1 and consists of a relatively wear-resistant rubber or plastic material, preferably PUR, or of rubber / PUR combinations with hard metal and / or ceramic integrated.
- FIG. 2 which represents a rear view of the device in the direction of arrow P in FIG. 1
- two levers 6 of a conventionally designed pressing device 7 are attached to the two end parts of the support beam 5, which position adjustment of the support beam 5 and thus of the entire stripping device to achieve a resilient pressure.
- a rubber-elastic strip 8 is permanently attached, for example by vulcanization, which consists of a suitable rubber or plastic material, especially a PUR.
- vulcanization which consists of a suitable rubber or plastic material, especially a PUR.
- brackets 9 embodied here as angular parts are embedded or vulcanized. As indicated by dashed lines in FIG.
- the rubber-elastic strip 8 can also be divided into identical or unequal sections by blind slots or also consist of individual segments.
- the brackets 9 designed as steel sheet inserts are used for screwing on plate-shaped feet 10, which are welded at the end by the angled support arms 11 or screwed on for adjustment or readjustment.
- Wiper plates 12 are welded to the upper, obliquely upward-pointing sections of these support arms 11, which have a straight scraper edge 13 and, moreover, a shape in the form of a segment of a circle. As shown, these scraper plates 12 are offset from one another in the direction of movement of the conveyor belt 1 and are arranged to overlap one another on both sides, so that an over the entire width of the conveyor belt extends. Grazing effect results.
- Particularly wear-resistant hard plates 14 can be attached to the end sections of these scraper plates 12, which also applies to the scraper strips 3. Instead of these plates 14 or subsequently, a sliding covering made of, for example, PTFE, which promotes the drainage of particularly sticky materials, can be provided on the front, in particular of the wiper strip 3.
- a sliding covering made of, for example, PTFE which promotes the drainage of particularly sticky materials
- FIG. 3 basically corresponds to the exemplary embodiment according to FIGS. 1 and 2, the same components being identified with the same reference numerals.
- a second scraper bar 15 is used, which is diametrically opposite the scraper bar 3 on the supporting beam 5 permanently, e.g. by vulcanization, adhesive or the like is attached.
- a resilient strip 16 made of rubber-elastic material, preferably PUR, is permanently attached, which can have a tapering cross-section to maintain the desired spring properties and in the same way as in the embodiment. 1 as a sheet steel insert brackets 9 for the angled support arms 11 are permanently attached, the latter having the shape shown in Fig. 3.
- This embodiment according to FIG. 3 enables the support beams to be moved when the scraper strip 3 is worn, the support arms being detached from the rubber-elastic strip 16 and being reattached after they have been turned.
- a particular advantage of the device according to the invention is that the scraper strips 3 can be adjusted so that there is a small intermediate distance between their end surface and the conveyor belt 1, so that they are primarily coarser materials be stripped. Due to the The subsequent stripper plates 12 of the stripper 4 are then subjected to final cleaning of the conveyor belt, in which even firmly adhering caking and fine-grained pasty material are stripped off.
- the special shape of the narrow strip-shaped support arms ensures that the material released by the secondary wiper 4 can fall freely and unhindered from the support arms.
- the invention is not restricted to the exemplary embodiments shown.
- the wiper strips 3 instead of the wiper strips 3; 15 differently shaped scraper strips are also used, which combine a sufficient cleaning effect with a gentle pressure system on the conveyor belt 1.
- the continuous or segmented rubber-elastic strip 16 can be replaced by other suitable spring elements, although the embodiment shown is considered to be preferred in terms of cost and durability.
- the scraper i.e. the pre-scraper and also the post-scraper, due to the inherent elasticity or the elastic bearing, so that the risk of belt damage or increased damage is reduced to a minimum. Caking on the squeegee and also on the secondary scraper are also reliably avoided.
- a suitable contact pressure for the front squeegee and for the secondary scraper can also be selected.
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- Mechanical Engineering (AREA)
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Abstract
Description
Abstreif orrichtung zum Reinigen von Förderbändern Scraper device for cleaning conveyor belts
Die Erfindung betrifft eine Abstreifvorrichtung zum Reinigen von Förderbändern mit mindestens einer ersten an einem Tragbalken befestigten Abstreifleiste, mit mindestens einem am Tragbalken befestigten achabstreifer, der mindestens ein schräg bzw. auch im rechten Winkel zur Laufrichtung des Förderbandes ausgerichtetes und an Tragarmen befestigtes Abstreifblatt aufweist, und mit einer verstellbaren Anpreßvor- richtung, die an den Enden des Tragbalkens angreift.The invention relates to a scraper device for cleaning conveyor belts with at least one first scraper bar attached to a support beam, with at least one axle scraper attached to the support bar, which has at least one scraper blade aligned at an angle or also at right angles to the direction of travel of the conveyor belt and attached to support arms, and with an adjustable pressure device that engages the ends of the support beam.
Abstreifvorrichtungen zur Reinigung von Förderbändern sind in einer Vielzahl unterschiedlicher Ausführungen bekannt . Eine von der Anmelderin seit langem eingesetzte Abstreifvorrichtung weist beispielsweise einen zentralen Tragbalken von hohlem Vierkantprofil auf, an dessen Längsseiten ein, zwei oder auch drei Abstreiferleisten von etwa rechteckigem Querschnitt aus einem verschleißfesten PUR- bzw. Gummi-Material ggf. mit Hartmetall oder Keramikeinlagen dauerhaft befestigt sind. Nach Verschleiß der einen Abstreifleiste kann durch einfaches Umstecken des Tragbalkens in seiner verstellbaren Halterung um 90 bzw. 180° diese durch eine noch unverbrauchte Streifleiste ersetzt werden. Der Tragbalken-Halterung ist eine Anpreßvorrichtung zugeordnet, die an tragenden Bauteilen des Förderers montiert ist und nach individueller Einstellung einen gewissen federnden Andruck der jeweils wirksamen Abstreifleiste an das Förderband erzeugt .Scraper devices for cleaning conveyor belts are known in a variety of different designs. A stripping device that the applicant has long been using has, for example, a central supporting beam with a hollow square profile, on the long sides of which one, two or even three scraper strips of approximately rectangular cross-section made of a wear-resistant PUR or rubber material, if necessary permanently fixed with hard metal or ceramic inserts are. After wear of a squeegee by simply repositioning the support beam in its adjustable bracket by 90 or 180 ° these can be replaced by an as yet unused squeegee. The support beam holder is assigned a pressure device which is mounted on the load-bearing components of the conveyor and, after individual adjustment, generates a certain resilient pressure of the effective scraper strip on the conveyor belt.
Aus der DE 39 15 609 AI ist eine andere Vorrichtung zum Reinigen von Förderbändern bekannt, die zwei als Vierkant - Hohlprofile ausgebildete Tragbalken besitzt, die jeweils zwei Abstreiferleisten von rechteckigem Querschnitt aus PUR- Material aufweisen und die durch Querstreben in Form einer Wippe miteinander verbunden sind. Diese Querstreben sind verschwenkbar an dem Ende von Auslegerarmen gelagert, so daß jeweils zwei Abstreifleisten sich gleichzeitig in Druckanlage an dem Förderband befinden können.Another device for cleaning conveyor belts is known from DE 39 15 609 A1, which has two supporting beams designed as square hollow profiles, each of which has two scraper strips of rectangular cross section made of PUR material and which are connected to one another by cross struts in the form of a rocker . These cross struts are pivotally mounted at the end of the boom arms, so that two scraper strips can be located in a pressure system on the conveyor belt at the same time.
Schließlich ist aus der EP 0 262 272 AI eine Abstreifvorrichtung für Förderbänder bekannt, die eine vordere Ab- streifleiste und ein dieser nachgeordnetes Abstreiferblatt aufweist, welche beide an einem gemeinsamen Tragbalken formschlüssig und lösbar befestigt sind. Die Abstreiferleiste besteht aus einem geeigneten PUR-Material und liegt federelastisch an dem Förderband an. Beide Abstreifelemente sind mit ihrem jeweiligen Befestigungsfuß etwa Schwalbenschwanz - förmig in entsprechenden Führungsausnehmungen des Tragbalkens längs verschiebbar festgelegt, so daß sie auf einfache Weise ein- und ausgebaut werden können. Der Nachabstreifer kann mehrere in beidseitiger Versetzung nebeneinander angeordnete Abstreifblätter aufweisen, die mit ihrer Außenkante schabend am Förderband anliegen und mit ihrem unteren Teil am Ende von jeweils gesonderten Tragarmen aus PUR-Material befestigt sind. Aufgabe der Erfindung ist es, eine AbstreifVorrichtung zum Reinigen von Förderbändern zu schaffen, die bei konstruktiv einfachem und in sich geschlossenen Aufbau einen schonenden Angriff am Förderband in Verbindung mit einem hohen Reinigungseffekt bewirkt.Finally, EP 0 262 272 A1 discloses a scraper device for conveyor belts, which has a front scraper strip and a scraper blade arranged downstream of it, both of which are positively and releasably attached to a common support beam. The scraper bar is made of a suitable PUR material and resiliently rests on the conveyor belt. Both scraper elements are fixed with their respective mounting feet in an approximately dovetail-shaped manner in corresponding guide recesses of the supporting beam so that they can be installed and removed in a simple manner. The secondary scraper can have a plurality of scraper blades arranged next to each other in a mutual offset, which abut the outer edge with their outer edge and are fastened with their lower part at the end of separate support arms made of PUR material. The object of the invention is to provide a stripping device for cleaning conveyor belts which, with a structurally simple and self-contained structure, causes a gentle attack on the conveyor belt in conjunction with a high cleaning effect.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß am Tragbalken eine durchgehende Leiste aus einem gummielastischen Material, PUR oder einem anderen elastischen Kunststoff befestigt ist, an der die abgewinkelten Tragarme des Nachabstreifers montiert sind.This object is achieved in that a continuous bar made of a rubber-elastic material, PUR or another elastic plastic is attached to the support beam, on which the angled support arms of the wiper are mounted.
Durch die erfindungsgemäß ausgebildete Abstreifvorrichtung wird ein besonders intensiver Reinigungseffekt erzielt, da die erste relativ breite durchgehende Abstreiferleiste dik- kere und auch gröbere anhaftende Stoffe vom Förderband entfernt und der aus einer Vielzahl von einzelnen und gesondert gefederten Abstreifplatten bestehende Nachabstreifer für die endgültige Bandreinigung sorgt. Wesentlich dabei ist, daß die gesamte Abstreifvorrichtung mit relativ geringen An- druckkräften arbeitet, was einen schonenden Angriff der beiden Abstreifelemente an dem kostspieligen Förderband bedeutet. Durch zweckmäßige Ausgestaltung der Einzelteile des Nachabstreifers , insbesondere der Tragarme, kann eine genaue Lageanpassung der Abstreifplatten an die Querschnittsform des Förderbandes erzielt werden. Kleinere Unregelmäßigkeiten lassen sich durch die federelastische Halterung dieser Abstreifplatten ausgleichen. Die geringen Abmessungen und das geringe Eigengewicht der AbstreifVorrichtung ermöglichen eine einfache Montage auch an relativ unzugänglichen Betriebspunkten, was beispielsweise den Ersatz herkömmlicher Abstreifer durch die verbesserte Vorrichtung gemäß der Erfindung ermöglicht. Ein weiterer Vorteil besteht noch darin, daß ggf. verschlissene Abstreifplatten des Nachabstreifers zusammen mit den jeweiligen Tragarmen einzeln und auf einfa- ehe Weise ausgewechselt werden könnnen. Die Anordnung der Abstreifplatten des Nachabstreifers mit jeweils beidseitiger Überlappung stellt sicher, daß das Förderband über eine festgelegte Breite gereinigt wird, wobei die gesonderte federnde Halterung des jeweiligen Tragarmes eine effektive Anlage jeder Abstreifplatte am Förderband gewährleistet.The scraper device designed according to the invention achieves a particularly intensive cleaning effect, since the first relatively wide continuous scraper strip removes thicker and also coarser adhering substances from the conveyor belt and the secondary scraper, which consists of a large number of individual and separately sprung scraper plates, ensures the final belt cleaning. It is essential that the entire stripping device works with relatively low pressure forces, which means a gentle attack of the two stripping elements on the expensive conveyor belt. By appropriately designing the individual parts of the secondary scraper, in particular the support arms, an exact positional adjustment of the scraper plates to the cross-sectional shape of the conveyor belt can be achieved. Smaller irregularities can be compensated for by the spring-elastic mounting of these scraper plates. The small dimensions and the low weight of the stripping device enable simple assembly even at relatively inaccessible operating points, which, for example, enables the replacement of conventional strippers by the improved device according to the invention. Another advantage is that possibly worn scraper plates of the secondary scraper together with the respective support arms individually and on easy before they can be replaced. The arrangement of the scraper plates of the secondary scraper, each with overlap on both sides, ensures that the conveyor belt is cleaned over a fixed width, the separate resilient mounting of the respective support arm ensuring effective contact of each scraper plate on the conveyor belt.
Die erste Abstreifleiste hat einen etwa rechteckigen Querschnitt und besteht aus einem geeigneten Gummi- oder Kunst- stoffmaterial, vorzugsweise aus PUR mit oder ohne faserför- migen, körnigen oder pulverförmigen Füllstoffen, welche die Festigkeit bzw. das Verschleißverhalten günstig beeinflussen. Die Abstreifleiste kann jedoch auch aus Hartmetall, Keramik oder auch aus Werkstoffkombinationen bestehen.The first squeegee has an approximately rectangular cross section and consists of a suitable rubber or plastic material, preferably of PUR with or without fibrous, granular or powdery fillers, which have a favorable effect on the strength or wear behavior. The squeegee can also consist of hard metal, ceramic or combinations of materials.
Die Standzeiten der erfindungsgemäßen Abstreifvorrichtung können durch eine zweckmäßige Weiterbildung wesentlich verlängert werden, bei welcher an einem einzigen Tragbalken jeweils zwei Abstreifleisten gegenüberliegend befestigt sind.The service life of the scraper device according to the invention can be significantly extended by an expedient development in which two scraper bars are attached opposite each other on a single supporting beam.
Im folgenden werden Ausführungsbeispiele der Erfindung anhand der Zeichnung im einzelnen beschrieben. Es zeigen:Exemplary embodiments of the invention are described in detail below with reference to the drawing. Show it:
Fig. 1 eine erste Ausführung der erfindungsgemäßen Abstreifvorrichtung im Querschnitt;Figure 1 shows a first embodiment of the stripping device according to the invention in cross section.
Fig. 2 die Vorrichtung nach Fig. 1 in Rückansicht;Fig. 2 shows the device of Figure 1 in rear view.
Fig. 3 ein anderes Ausführungsbeispiel der erfindungsgemäßen AbstreifVorrichtung im schematischen Querschnitt .Fig. 3 shows another embodiment of the stripping device according to the invention in schematic cross section.
Die in den Figuren 1 und 2 dargestellte Abstreifvorrichtung dient zum Reinigen eines Förderbandes 1 unmittelbar hinter einer Antriebs- bzw. Umlenktrommel 2 und weist eine erste Abstreifleiste 3 von im wesentlichen rechteckigem Querschnitt sowie einen Nachabstreifer 4 auf, die an einem als Vierkant-Hohlprofil ausgeführtem Tragbalken 5 befestigt sind. Die Abstreiferleiste erstreckt sich durchgehend über die gesamte Breite des Förderbandes 1 und besteht aus einem relativ verschleißfesten Gummi- oder Kunststoffmaterial , vorzugsweise PUR, oder aus Kombinationen Gummi/PUR mit Hartmetall und/oder Keramik integriert.The scraper device shown in Figures 1 and 2 is used to clean a conveyor belt 1 immediately behind a drive or deflection drum 2 and has a first scraper bar 3 of substantially rectangular cross-section and a Nachabstreifer 4, which on a Square hollow profile executed support beam 5 are attached. The scraper strip extends across the entire width of the conveyor belt 1 and consists of a relatively wear-resistant rubber or plastic material, preferably PUR, or of rubber / PUR combinations with hard metal and / or ceramic integrated.
Wie insbesondere aus Fig. 2 ersichtlich, die eine Rückansicht der Vorrichtung in Richtung des Pfeiles P in Fig. 1 darstellt, sind an den beiden Endteilen des Tragbalkens 5 zwei Hebel 6 einer herkömmlich ausgebildeten Anpreßvorrichtung 7 befestigt, die eine Lageeinstellung des Tragbalkens 5 und damit der gesamten AbstreifVorrichtung zur Erzielung eines federnden Andrucks ermöglicht. An der der Abstreifleiste 3 diametral gegenüberliegenden Seite des Tragbalkens 5 ist eine gummielastische Leiste 8 dauerhaft, z.B. durch Vulkanisation, befestigt, die aus einem geeigneten Gummi- bzw. Kunststoffmaterial, insbesondere einem PUR besteht. An dieser einteilig durchgehenden gummielastischen Leiste 8 sind mehrere hier als Winkelteile ausgebildete Halterungen 9 eingebettet, bzw. einvulkanisiert. Wie in Fig. 2 durch Strichlinien angedeutet, kann die gummielastische Leiste 8 auch in gleiche bzw. auch ungleiche Abschnitte durch Blindschlitze unterteilt sein oder auch aus Einzelsegmenten bestehen. Die als Stahlblecheinlagen ausgebildeten Halterungen 9 dienen zum Anschrauben von plattenförmigen Füßen 10, die am Ende von den abgewinkelten Tragarmen 11 angeschweißt oder zum Ein- bzw. Nachstellen angeschraubt sind. An den oberen schräg nach aufwärts weisenden Abschnitten dieser Tragarme 11 sind Abstreiferplatten 12 angeschweißt, die eine gerade Schaberkante 13 und im übrigen eine kreissegmentför ige Form haben. Wie gezeigt, sind diese Abstreifplatten 12 in der Be- wegungsrichtung des Förderbandes 1 gegeneinander versetzt und beidseitig einander überlappend angeordnet, so daß sich eine über die gesamte Breite des Förderbandes reichende Ab- Streifwirkung ergibt. An den Endabschnitten dieser Abstreif- platten 12 können besonders verschleißfeste harte Plättchen 14 befestigt sein, was im übrigen auch für die Abstreiflei- sten 3 gilt. Statt dieser Plättchen 14 oder auch im Anschluß daran kann an der Vorderseite insbesondere der Abstreifleiste 3 ein Gleitbelag aus z.B. PTFE vorgesehen sein, der ein Abfließen von insbesondere klebrigen Materialien begünstigt.As can be seen in particular from FIG. 2, which represents a rear view of the device in the direction of arrow P in FIG. 1, two levers 6 of a conventionally designed pressing device 7 are attached to the two end parts of the support beam 5, which position adjustment of the support beam 5 and thus of the entire stripping device to achieve a resilient pressure. On the side of the support beam 5 which is diametrically opposite the scraper strip 3, a rubber-elastic strip 8 is permanently attached, for example by vulcanization, which consists of a suitable rubber or plastic material, especially a PUR. On this one-piece, continuous rubber-elastic strip 8, a plurality of brackets 9 embodied here as angular parts are embedded or vulcanized. As indicated by dashed lines in FIG. 2, the rubber-elastic strip 8 can also be divided into identical or unequal sections by blind slots or also consist of individual segments. The brackets 9 designed as steel sheet inserts are used for screwing on plate-shaped feet 10, which are welded at the end by the angled support arms 11 or screwed on for adjustment or readjustment. Wiper plates 12 are welded to the upper, obliquely upward-pointing sections of these support arms 11, which have a straight scraper edge 13 and, moreover, a shape in the form of a segment of a circle. As shown, these scraper plates 12 are offset from one another in the direction of movement of the conveyor belt 1 and are arranged to overlap one another on both sides, so that an over the entire width of the conveyor belt extends. Grazing effect results. Particularly wear-resistant hard plates 14 can be attached to the end sections of these scraper plates 12, which also applies to the scraper strips 3. Instead of these plates 14 or subsequently, a sliding covering made of, for example, PTFE, which promotes the drainage of particularly sticky materials, can be provided on the front, in particular of the wiper strip 3.
Die Ausführung nach Fig. 3 entspricht grundsätzlich dem Aus- führungsbeispiel nach den Figuren 1 bzw. 2, wobei gleiche Bauteile mit denselben Bezugszeichen gekennzeichnet sind. Unterschiedlich ist bei dieser Ausführung nach Fig. 3, daß eine zweite Abstreiferleiste 15 verwendet wird, die der Abstreiferleiste 3 diametral gegenüberliegend an dem Tragbalken 5 dauerhaft, z.B. durch Vulkanisation, klebend od. dgl . befestigt ist. An der in Durchlaufrichtung des Förderbandes 1 rückwärtigen Seite des Tragbalkens 5 ist eine federnde Leiste 16 aus gummielastischem Material, vorzugsweise PUR, dauerhaft befestigt, die zum Erhalt der gewünschten Federeigenschaften einen sich mittig verjüngenden Querschnitt haben kann und in der in gleicher Weise wie beim Ausfüh- rungsbeispiel nach Fig. 1 als Stahlblecheinlagen ausgebildete Halterungen 9 für die abgewinkelten Tragarme 11 dauerhaft befestigt sind, wobei letztere die in Fig. 3 dargestellte Form haben. Diese Ausführung nach Fig. 3 ermöglicht das Umsetzen der Tragbalken bei verschlissener Abstreifleiste 3, wobei die Tragarme von der gummielastischen Leiste 16 gelöst und nach deren Wendung wieder befestigt werden.3 basically corresponds to the exemplary embodiment according to FIGS. 1 and 2, the same components being identified with the same reference numerals. What is different in this embodiment according to Fig. 3 is that a second scraper bar 15 is used, which is diametrically opposite the scraper bar 3 on the supporting beam 5 permanently, e.g. by vulcanization, adhesive or the like is attached. On the rear side of the carrying beam 5 in the direction of travel of the conveyor belt 1, a resilient strip 16 made of rubber-elastic material, preferably PUR, is permanently attached, which can have a tapering cross-section to maintain the desired spring properties and in the same way as in the embodiment. 1 as a sheet steel insert brackets 9 for the angled support arms 11 are permanently attached, the latter having the shape shown in Fig. 3. This embodiment according to FIG. 3 enables the support beams to be moved when the scraper strip 3 is worn, the support arms being detached from the rubber-elastic strip 16 and being reattached after they have been turned.
Wie insbesondere aus den Figuren 1 und 3 ersichtlich, liegt ein besonderer Vorteil der erfindungsgemäßen Vorrichtung darin, daß die Abstreifleisten 3 so eingestellt werden können, daß ein geringer Zwischenabstand zwischen ihrer Endfläche und dem Förderband 1 besteht, so daß von ihnen in erster Linie gröbere Materialien abgestreift werden. Durch die fe- dernde Anlage der nachgeordneten Abstreifplatten 12 des Nachabstreifers 4 erfolgt dann die Endreinigung des Förderbandes, bei welcher auch fester anhaftende Anbackungen und feinkörniges pastöses Material schabend abgestreift werden. Die besondere Form der schmalen streifenförmigen Tragarme gewährleistet, daß das von dem Nachabstreifer 4 gelöste Material frei und von den Tragarmen ungehindert abfallen kann.As can be seen in particular from Figures 1 and 3, a particular advantage of the device according to the invention is that the scraper strips 3 can be adjusted so that there is a small intermediate distance between their end surface and the conveyor belt 1, so that they are primarily coarser materials be stripped. Due to the The subsequent stripper plates 12 of the stripper 4 are then subjected to final cleaning of the conveyor belt, in which even firmly adhering caking and fine-grained pasty material are stripped off. The special shape of the narrow strip-shaped support arms ensures that the material released by the secondary wiper 4 can fall freely and unhindered from the support arms.
Die Erfindung ist nicht auf die dargestellten Ausführungsbeispiele beschränkt. So können beispielsweise statt der dargestellten Abstreifleisten 3; 15 auch anders geformte Abstreifleisten Verwendung finden, die eine ausreichende Reinigungswirkung mit einer schonenden Druckanlage am Förderband 1 verbinden. Darüber hinaus kann auch die durchgehende oder in Segmente unterteilte gummielastische Leiste 16 durch andere geeignete Federelemente ersetzt werden, obgleich die dargestellte Ausführung bezüglich Kosten und Lebensdauer als bevorzugt angesehen wird. Bei Fördergutbeschädigungen kann der Abstreifer, d.h. der Vor- und auch der Nachabstreifer, aufgrund der Eigenelastizität bzw. der elastischen Lagerung ausweichen, wodurch das Risiko einer Bandbeschädigung bzw. Vergrößerung der Beschädigung auf ein Minimum reduziert wird. Ferner werden Anbackungen an der Abstreifleiste und auch am Nachabstreifer sicher vermieden. Durch die geeignete Wahl der einzelnen Tragarme kann deren Elastizität und damit die Andruckkraft der Abstreifplatten über die Breite des Förderbands unterschiedlich und einstellbar sein. Schließlich kann auch eine jeweils geeignete Anpreßkraft für die vordere Abstreifleiste und für den Nachabstreifer gewählt werden. The invention is not restricted to the exemplary embodiments shown. For example, instead of the wiper strips 3; 15 differently shaped scraper strips are also used, which combine a sufficient cleaning effect with a gentle pressure system on the conveyor belt 1. In addition, the continuous or segmented rubber-elastic strip 16 can be replaced by other suitable spring elements, although the embodiment shown is considered to be preferred in terms of cost and durability. In the event of damage to the conveyed goods, the scraper, i.e. the pre-scraper and also the post-scraper, due to the inherent elasticity or the elastic bearing, so that the risk of belt damage or increased damage is reduced to a minimum. Caking on the squeegee and also on the secondary scraper are also reliably avoided. Through the suitable choice of the individual support arms, their elasticity and thus the pressing force of the stripper plates can be different and adjustable over the width of the conveyor belt. Finally, a suitable contact pressure for the front squeegee and for the secondary scraper can also be selected.
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP98925568A EP0983206A1 (en) | 1997-05-23 | 1998-05-11 | Wiper device for cleaning conveyor belts |
| AU77635/98A AU7763598A (en) | 1997-05-23 | 1998-05-11 | Wiper device for cleaning conveyor belts |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29709117U DE29709117U1 (en) | 1997-05-23 | 1997-05-23 | Scraper device for cleaning conveyor belts |
| DE29709117.4 | 1997-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1998052849A1 true WO1998052849A1 (en) | 1998-11-26 |
Family
ID=8040714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1998/002735 Ceased WO1998052849A1 (en) | 1997-05-23 | 1998-05-11 | Wiper device for cleaning conveyor belts |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0983206A1 (en) |
| AU (1) | AU7763598A (en) |
| DE (1) | DE29709117U1 (en) |
| WO (1) | WO1998052849A1 (en) |
| ZA (1) | ZA984332B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29709117U1 (en) * | 1997-05-23 | 1997-07-17 | Stahlgruber Otto Gruber GmbH & Co, 81675 München | Scraper device for cleaning conveyor belts |
| DE10301230B4 (en) * | 2003-01-15 | 2006-06-14 | Jostes, Hans, Dipl.-Ing. | Scraper device for cleaning conveyor belts |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2365415A1 (en) * | 1973-04-18 | 1974-12-19 | Manfred Schattauer | STRIPPING DEVICE FOR BELTING SYSTEMS. DETACHED FROM: 2319736 |
| US4257517A (en) * | 1976-12-06 | 1981-03-24 | Uniroyal Ltd. | Scraper bars for use with conveyor belting and the like |
| EP0262272A1 (en) * | 1986-09-02 | 1988-04-06 | Martin Engineering Company | Conveyor belt cleaner |
| US4768645A (en) * | 1987-02-20 | 1988-09-06 | Farris Sammy D | Conveyor belt scraping apparatus |
| EP0396890A1 (en) * | 1989-05-12 | 1990-11-14 | F.E. Schulte Strathaus KG | Device for cleaning conveyor belts |
| DE4121173A1 (en) * | 1990-08-07 | 1992-02-13 | Jostes Marie | Conveyor belt scraper and cleaner - consists of basic elastomeric piece, with metal insertion piece and vibration cavities |
| DE4407657A1 (en) * | 1994-03-08 | 1995-09-14 | Hans Dipl Ing Jostes | Conveyor belt scraper |
| DE29709117U1 (en) * | 1997-05-23 | 1997-07-17 | Stahlgruber Otto Gruber GmbH & Co, 81675 München | Scraper device for cleaning conveyor belts |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1002933A3 (en) * | 1988-02-10 | 1991-09-03 | Technic Gum Sa | MOUNTING OF SCRAPER BLADES FOR THE CLEANING OF A CONVEYOR BELT. |
| GB8903217D0 (en) * | 1989-02-13 | 1989-03-30 | Doncaster Conveyor Improv | Conveyor belt scraper mechanism |
| DE9013426U1 (en) * | 1990-09-24 | 1990-12-13 | König, Carl, 6472 Altenstadt | Beam scraper for conveyor belts |
| DE9420641U1 (en) * | 1994-12-23 | 1995-02-09 | TIP-TOP Vulkanisiertechnik, 37581 Bad Gandersheim | Scraper for conveyor belts |
-
1997
- 1997-05-23 DE DE29709117U patent/DE29709117U1/en not_active Expired - Lifetime
-
1998
- 1998-05-11 AU AU77635/98A patent/AU7763598A/en not_active Abandoned
- 1998-05-11 EP EP98925568A patent/EP0983206A1/en not_active Ceased
- 1998-05-11 WO PCT/EP1998/002735 patent/WO1998052849A1/en not_active Ceased
- 1998-05-21 ZA ZA984332A patent/ZA984332B/en unknown
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2365415A1 (en) * | 1973-04-18 | 1974-12-19 | Manfred Schattauer | STRIPPING DEVICE FOR BELTING SYSTEMS. DETACHED FROM: 2319736 |
| US4257517A (en) * | 1976-12-06 | 1981-03-24 | Uniroyal Ltd. | Scraper bars for use with conveyor belting and the like |
| EP0262272A1 (en) * | 1986-09-02 | 1988-04-06 | Martin Engineering Company | Conveyor belt cleaner |
| US4768645A (en) * | 1987-02-20 | 1988-09-06 | Farris Sammy D | Conveyor belt scraping apparatus |
| EP0396890A1 (en) * | 1989-05-12 | 1990-11-14 | F.E. Schulte Strathaus KG | Device for cleaning conveyor belts |
| DE4121173A1 (en) * | 1990-08-07 | 1992-02-13 | Jostes Marie | Conveyor belt scraper and cleaner - consists of basic elastomeric piece, with metal insertion piece and vibration cavities |
| DE4407657A1 (en) * | 1994-03-08 | 1995-09-14 | Hans Dipl Ing Jostes | Conveyor belt scraper |
| DE29709117U1 (en) * | 1997-05-23 | 1997-07-17 | Stahlgruber Otto Gruber GmbH & Co, 81675 München | Scraper device for cleaning conveyor belts |
Also Published As
| Publication number | Publication date |
|---|---|
| DE29709117U1 (en) | 1997-07-17 |
| ZA984332B (en) | 1998-11-30 |
| EP0983206A1 (en) | 2000-03-08 |
| AU7763598A (en) | 1998-12-11 |
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