EP0050709A1 - Screen plate - Google Patents

Screen plate Download PDF

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Publication number
EP0050709A1
EP0050709A1 EP81105234A EP81105234A EP0050709A1 EP 0050709 A1 EP0050709 A1 EP 0050709A1 EP 81105234 A EP81105234 A EP 81105234A EP 81105234 A EP81105234 A EP 81105234A EP 0050709 A1 EP0050709 A1 EP 0050709A1
Authority
EP
European Patent Office
Prior art keywords
strips
sieve plate
sieve
plate according
conveying direction
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
EP81105234A
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German (de)
French (fr)
Other versions
EP0050709B1 (en
Inventor
Edmund Pürkhard
Max Fuchs
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.)
Carl Schenck AG
Original Assignee
Carl Schenck AG
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 Carl Schenck AG filed Critical Carl Schenck AG
Priority to AT81105234T priority Critical patent/ATE13020T1/en
Publication of EP0050709A1 publication Critical patent/EP0050709A1/en
Application granted granted Critical
Publication of EP0050709B1 publication Critical patent/EP0050709B1/en
Expired legal-status Critical Current

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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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/469—Perforated sheet-like material

Definitions

  • the invention relates to a cast sieve plate for hot and highly abrasive bulk materials.
  • Cast sieve plates are known in various embodiments. A number of differently composed and alloyed steels and cast iron in a suitable composition can be used as casting materials. The previously known cast sieve plates have the disadvantage that they wear out quickly when subjected to high loads, in particular when used for hot and highly abrasive bulk materials.
  • the object of the present invention is to provide a sieve plate which is particularly suitable for hot and highly abrasive bulk materials and which is particularly wear-resistant. This object is achieved by the features specified in the patent claims. The claims also cover embodiments of the invention.
  • the arrangement of strips or strips made of a heat-resistant armor material running in the conveying direction increases the service life of a cast sieve plate and improves the sieving performance.
  • Coarse-grained and heavy material components lie on the wear-resistant strips and do not come into direct contact with the underlying screen surface.
  • the fine goods cause less wear than coarse goods. Therefore, the perforated surfaces are less stressed in the proposed arrangement and the wear on these surfaces is reduced. Since coarse screenings do not touch the screen surface, this is better used for the screening process.
  • the contact surface of the hot is due to the arrangement of wear strips Screenings with the screen plate smaller. As a result, the screen plate is heated up less, which also contributes to reducing wear.
  • the subclaims relate to expedient and advantageous embodiments of the invention, for example a cast base plate with material strips made of heat-resistant armor material, the arrangement of webs, the connection of the material strips and / or webs to the base plate, the execution of the screen perforation, the additional armoring of the screen plate and the arrangement of sieve plates with a sieve covering.
  • the sieve plates which are shown in sections in the figures and are cast from heat-resistant materials (special steel), consist of a base plate 1 with the sieve holes 2.
  • the sieve holes have the shape of elongated holes, which are arranged in rows as seen in the conveying direction.
  • the longitudinal direction of the sieve holes forms an angle of approximately 45 ° with the conveying direction indicated by arrows (see FIGS. 3 and 4).
  • the sieve holes can also have a shape that differs from the exemplary embodiments shown and, for example, be round. As shown in the drawings, the screen holes can face down be flared.
  • the sieve holes are alternately offset by approximately 90 ° in their longitudinal direction. This type of perforation is advantageous for smaller sieve openings and results in good sieving performance.
  • Strips 3 made of heat-resistant armor material are arranged on the base plate 1 in the conveying direction.
  • the armor material is welded directly onto the base plate.
  • the base plate 1 has webs 4 and 5.
  • the cross-sections of the webs are approximately rectangular to square, the web flanks being able to be inclined or curved towards the center of the web.
  • the web 4 is part of the cast base plate itself.
  • the web is welded onto the base plate, as shown for web 5.
  • the webs are connected on their wide side to the base plate, but they can also be arranged in an upright position.
  • the material strips 3 are reinforced with material strips 3 made of a heat-resistant armor material.
  • the armor material can be welded onto the webs or connected in some other way to the webs.
  • the web flanks 7 and 8 can also be provided completely or partially with armor material. The webs run in the conveying direction of the material to be screened.
  • the screen holes 2 are located in the base plate 1 below the top edge of the screen plate. They are therefore less stressed by the material to be treated, in particular by large and heavy material components. At the same time, the sieving performance is improved.
  • the screen plate in the area of the screen holes can additionally be armored with armor material.
  • the height of the armor 6 can be equal to or less than the height of the armored strips or strips.
  • the shape of the armor can differ from the exemplary embodiment shown in FIG. 4. For example, individual beads made of armored material can be welded on the surface of the perforated screen in the longitudinal or transverse direction.
  • the screen plates are arranged in rows one behind the other (in the conveying direction) and next to one another (transversely to the conveying direction).
  • the transverse rows of the sieve plates can be installed offset to one another or manufactured in such a way that the strips alternate with the perforation in the conveying direction with armored strips or strips (checkerboard-like offset of the perforated strips or armored strips).

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Electromechanical Clocks (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Dry Shavers And Clippers (AREA)

Abstract

1. Screen plate of steel or cast iron for hot loose material which causes intense wear, with a support of heat-resistant armour, characterized in that the screen plate is cast, that the heat-resistant armour is arranged in the form of strips or bands (3) running in the conveying direction on the screen plate and that the screen perforation (2) is arranged sunken between the strips or bands (3).

Description

Die Erfindung betrifft eine gegossene Siebplatte für heiße und stark schleißende Schüttgüter.The invention relates to a cast sieve plate for hot and highly abrasive bulk materials.

Gegossene Siebplatten sind in verschiedenen Ausführungsformen bekannt. Als Gußwerkstoffe können eine Reihe von unterschiedlich zusammengesetzten und legierten Stählen und Gußeisen in geeigneter Zusammensetzung verwendet werden. Die bisher bekannten gegossenen Siebplatten haben den Nachteil, daß sie bei hoher Beanspruchung, insbesondere bei Verwendung für heiße und stark schleißende Schüttgüter, schnell verschleißen.Cast sieve plates are known in various embodiments. A number of differently composed and alloyed steels and cast iron in a suitable composition can be used as casting materials. The previously known cast sieve plates have the disadvantage that they wear out quickly when subjected to high loads, in particular when used for hot and highly abrasive bulk materials.

Aufgabe der vorliegenden Erfindung ist es, eine Siebplatte zu schaffen, die besonders gut für heiße und stark schleißende Schüttgüter geeignet und die besonders verschleißfest ist. Diese Aufgabe wird durch die in den Patentansprüchen angegebenen Merkmale gelöst. Die Ansprüche erfassen auch Ausgestaltungen der Erfindung.The object of the present invention is to provide a sieve plate which is particularly suitable for hot and highly abrasive bulk materials and which is particularly wear-resistant. This object is achieved by the features specified in the patent claims. The claims also cover embodiments of the invention.

Durch die Anordnung von in Förderrichtung verlaufenden Streifen oder Leisten aus einem hitzebeständigen Panzerwerkstoff wird die Lebensdauer einer gegossenen Siebplatte erhöht und die Siebleistung verbessert. Grobkörnige und schwere Materialbestandteile liegen auf den verschleißfesten Streifen auf und kommen mit der tiefer liegenden eigentlichen Siebfläche nicht direkt in Berührung. Das Feingut verursacht jedoch einen geringeren Verschleiß als grobe Gutstücke. Daher werden bei der vorgeschlagenen Anordnung die gelochten Flächen weniger stark beansprucht und der Verschleiß an diesen Flächen wird herabgesetzt. Da grobes Siebgut die Siebfläche nicht berührt, wird diese für den Siebvorgang besser ausgenutzt. Durch die Anordnung von Schleißleisten wird die Kontaktfläche des heißen Siebguts mit der Siebplatte kleiner. Dadurch wird die Siebplatte weniger stark aufgeheizt, was ebenfalls zur Verschleißminderung beiträgt.The arrangement of strips or strips made of a heat-resistant armor material running in the conveying direction increases the service life of a cast sieve plate and improves the sieving performance. Coarse-grained and heavy material components lie on the wear-resistant strips and do not come into direct contact with the underlying screen surface. However, the fine goods cause less wear than coarse goods. Therefore, the perforated surfaces are less stressed in the proposed arrangement and the wear on these surfaces is reduced. Since coarse screenings do not touch the screen surface, this is better used for the screening process. The contact surface of the hot is due to the arrangement of wear strips Screenings with the screen plate smaller. As a result, the screen plate is heated up less, which also contributes to reducing wear.

Die Unteransprüche betreffen zweckmäßige und vorteilhafte Ausgestaltungen der Erfindung, beispielsweise eine gegossene Grundplatte mit Materialstreifen aus hitzebeständigem Panzerwerkstoff, die Anordnung von Stegen, die Verbindung der Materialstreifen und/oder Stege mit der Grundplatte, die Ausführung der Sieblochung, die zusätzliche Aufpanzerung der Siebplatte sowie die Anordnung von Siebplatten bei einem Siebbelag.The subclaims relate to expedient and advantageous embodiments of the invention, for example a cast base plate with material strips made of heat-resistant armor material, the arrangement of webs, the connection of the material strips and / or webs to the base plate, the execution of the screen perforation, the additional armoring of the screen plate and the arrangement of sieve plates with a sieve covering.

In den Zeichnungen sind schematisch Ausführungsbeispiele der Erfindung dargestellt. Es zeigen:

  • Fig. 1 und 3 Ausschnitt aus einer gegossenen Siebplatte mit aufgeschweißten Streifen aus Panzerwerkstoff (Fig. 1 Schnitt, Fig. 3 Draufsicht),
  • Fig. 2 und 4 Ausschnitt aus einer gegossenen Siebplatte mit Stegen, die mit Panzerwerkstoff bewehrt sind (Fig. 2 Schnitt, Fig. 4 Draufsicht).
Exemplary embodiments of the invention are shown schematically in the drawings. Show it:
  • 1 and 3 detail of a cast sieve plate with welded strips of armor material (Fig. 1 section, Fig. 3 top view),
  • Fig. 2 and 4 detail of a cast sieve plate with webs, which are reinforced with armor material (Fig. 2 section, Fig. 4 top view).

Die in den Figuren ausschnittsweise dargestellten, aus hitzebeständigen Werkstoffen (Sonderstahl) gegossenen Siebplatten bestehen aus einer Grundplatte 1 mit den Sieblöchern 2. Die Sieblöcher haben die Form von Langlöchern, die in Förderrichtung gesehen hintereinander in Reihen angeordnet sind. Die Längsrichtung der Sieblöcher bildet mit der durch Pfeile angedeuteten Förderrichtung einen Winkel von etwa 45° (siehe Fig. 3 und 4). Die Sieblöcher können auch eine von den dargestellten Ausführungsbeispielen abweichende Form aufweisen und z.B. rund sein. Wie in den Zeichnungen dargestellt können die Sieblöcher nach unten konisch erweitert sein.The sieve plates, which are shown in sections in the figures and are cast from heat-resistant materials (special steel), consist of a base plate 1 with the sieve holes 2. The sieve holes have the shape of elongated holes, which are arranged in rows as seen in the conveying direction. The longitudinal direction of the sieve holes forms an angle of approximately 45 ° with the conveying direction indicated by arrows (see FIGS. 3 and 4). The sieve holes can also have a shape that differs from the exemplary embodiments shown and, for example, be round. As shown in the drawings, the screen holes can face down be flared.

Bei der Anordnung nach Fig. 4 sind die Sieblöcher in ihrer Längsrichtung abwechselnd um etwa 90° zueinander versetzt angeordnet. Diese Art der Sieblochung ist bei kleineren Sieböffnungen vorteilhaft und ergibt gute Siebleistungen.In the arrangement according to FIG. 4, the sieve holes are alternately offset by approximately 90 ° in their longitudinal direction. This type of perforation is advantageous for smaller sieve openings and results in good sieving performance.

Auf der Grundplatte 1 sind in Förderrichtung verlaufende Streifen 3 aus hitzebeständigem Panzerwerkstoff angeordnet. Im Ausführungsbeispiel nach den Figuren 1 und 3 ist der Panzerwerkstoff unmittelbar auf die Grundplatte aufgeschweißt. Im Ausführungsbeispiel nach den Figuren 2 und 4 weist die Grundplatte 1 Stege 4 und 5 auf. Die Stege sind im Querschnitt etwa rechteckig bis quadratisch, wobei die Stegflanken zur Stegmitte hin geneigt oder gekrümmt sein können. Der Steg 4 ist Bestandteil der gegossenen Grundplatte selbst. In einer anderen Ausführungsform ist der Steg auf die Grundplatte aufgeschweißt, wie bei Steg 5 dargestellt. Die Stege sind in den Ausführungsbeispielen an ihrer breiten Seite mit der Grundplatte verbunden, sie können jedoch auch hochkant angeordnet sein.Strips 3 made of heat-resistant armor material are arranged on the base plate 1 in the conveying direction. In the exemplary embodiment according to FIGS. 1 and 3, the armor material is welded directly onto the base plate. In the exemplary embodiment according to FIGS. 2 and 4, the base plate 1 has webs 4 and 5. The cross-sections of the webs are approximately rectangular to square, the web flanks being able to be inclined or curved towards the center of the web. The web 4 is part of the cast base plate itself. In another embodiment, the web is welded onto the base plate, as shown for web 5. In the exemplary embodiments, the webs are connected on their wide side to the base plate, but they can also be arranged in an upright position.

Die Stege nach Fig. 2 sind mit Materialstreifen 3 aus einem hitzebeständigen Panzerwerkstoff bewehrt. Der Panzerwerkstoff kann auf die Stege aufgeschweißt oder in anderer Weise mit den Stegen verbunden sein. Dabei können auch die Stegflanken 7 und 8 vollständig oder teilweise mit Panzerwerkstoff versehen sein. Die Stege verlaufen in Förderrichtung des abzusiebenden Materials.2 are reinforced with material strips 3 made of a heat-resistant armor material. The armor material can be welded onto the webs or connected in some other way to the webs. The web flanks 7 and 8 can also be provided completely or partially with armor material. The webs run in the conveying direction of the material to be screened.

Bedingt durch die aufgeschweißten Materialstreifen bzw. durch die Stege liegen die Sieblöcher 2 in der Grundplatte 1 unterhalb der Oberkante der Siebplatte. Sie werden daher durch das zu behandelnde Material, insbesondere durch große und schwere Materialbestandteile, wenigerstark beansprucht. Gleichzeitig wird die Siebleistung verbessert.Due to the welded material strips or the webs, the screen holes 2 are located in the base plate 1 below the top edge of the screen plate. They are therefore less stressed by the material to be treated, in particular by large and heavy material components. At the same time, the sieving performance is improved.

Wie bei Fig. 2 und 4 angedeutet, kann die Siebplatte im Bereich der Sieblöcher zusätzlich mit Panzerwerkstoff aufgepanzert sein. Die Höhe der Aufpanzerung 6 kann gleich oder kleiner sein als die Höhe der gepanzerten Streifen oder Leisten. Die Form der Aufpanzerung kann von dem dargestellten Ausführungsbeispiel nach Fig. 4 abweichen. Beispielsweise können auf der Fläche der Sieblochung einzelne Raupen aus Panzerwerkstoff in Längs- oder Querrichtung aufgeschweißt werden.As indicated in FIGS. 2 and 4, the screen plate in the area of the screen holes can additionally be armored with armor material. The height of the armor 6 can be equal to or less than the height of the armored strips or strips. The shape of the armor can differ from the exemplary embodiment shown in FIG. 4. For example, individual beads made of armored material can be welded on the surface of the perforated screen in the longitudinal or transverse direction.

Bei einem aus einer Anzahl von Siebplatten bestehenden Siebbelag (nicht dargestellt) sind die Siebplatten reihenweise hintereinander (in Förderrichtung) und nebeneinander (quer zur Förderrichtung) angeordnet. Die Querreihen der Siebplatten können hierbei versetzt zueinander eingebaut bzw. so hergestellt werden, daß sich in Förderrichtung gesehen die Streifen mit der Sieblochung mit gepanzerten Streifen oder Leisten abwechseln (schachbrettartige Versetzung der Lochstreifen czw. der gepanzerten Streifen).In the case of a screen covering (not shown) consisting of a number of screen plates, the screen plates are arranged in rows one behind the other (in the conveying direction) and next to one another (transversely to the conveying direction). The transverse rows of the sieve plates can be installed offset to one another or manufactured in such a way that the strips alternate with the perforation in the conveying direction with armored strips or strips (checkerboard-like offset of the perforated strips or armored strips).

Claims (9)

1. Gegossene Siebplatte für heiße und stark schleißende Schüttgüter, dadurch gekennzeichnet, daß die Siebplatte in Förderrichtung verlaufende Streifen oder Leisten (3) aus hitzebeständigem Panzerwerkstoff aufweist und daß die Sieblochung (2) vertieft zwischen den Streifen oder Leisten (3) angeordnet ist.1. Cast sieve plate for hot and highly abrasive bulk goods, characterized in that the sieve plate has strips or strips (3) made of heat-resistant armor material in the conveying direction and that the perforated sieve (2) is arranged between the strips or strips (3). 2. Siebplatte nach Anspruch 1, dadurch gekennzeichnet, daß die Sietplatte aus einer gegossenen Grundplatte (1) besteht, auf der Materialstreifen (3) aus hitzebeständigem Panzerwerkstoff angeordnet sind.2. Sieve plate according to claim 1, characterized in that the rivet plate consists of a cast base plate (1) on which material strips (3) made of heat-resistant armor material are arranged. 3. Siebplatte nach Anspruch 2, dadurch gekennzeichnet, daß die Grundplatte (1) Stege (4, 5) aufweist, auf denen die Materialstreifen (3) angeordnet sind.3. Sieve plate according to claim 2, characterized in that the base plate (1) has webs (4, 5) on which the material strips (3) are arranged. 4. Siebplatte nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Materialstreifen (3) und/oder Stege (5) aufgeschweißt sind.4. Sieve plate according to claim 2 or 3, characterized in that the material strips (3) and / or webs (5) are welded on. 5. Siebplatte nach Anspruch 3, dadurch gekennzeichnet, daß die Stegflanken zur Stegmitte hin geneigt oder gekrümmt ausgebildet und teilweise oder vollständig mit Materialstreifen (7, B) versehen sind.5. Sieve plate according to claim 3, characterized in that the web flanks inclined or curved towards the center of the web and partially or completely provided with strips of material (7, B). 6. Siebplatte nach Anspruch 1, dadurch gekennzeichnet, daß die Sieblochung (2) aus in Reihen angeordneten Langlöchern (2) besteht, die in einem Winkel von etwa 45° zur Förderrichtung angeordnet sind.6. Sieve plate according to claim 1, characterized in that the sieve perforation (2) consists of rows of elongated holes (2) which are arranged at an angle of approximately 45 ° to the conveying direction. 7. Siebplatte nach Anspruch 6, dadurch gekennzeichnet, daß aufeinanderfolgende Langlöcher (2) in ihrer Längsrichtung jeweils um etwa 90° zueinander versetzt angeordnet sind.7. Sieve plate according to claim 6, characterized in that successive elongated holes (2) are each offset in their longitudinal direction by about 90 ° to each other. 8. Siebplatte nach Anspruch 1, dadurch gekennzeichnet, daß die Grundplatte (1) zwischen den Streifen oder Leisten (3) in den Bereichen der Sieblochung (2) zusätzlich aufgepanzert ist, wobei die Höhe der Aufpanzerung (6) gleich oder kleiner ist als die Höhe der Streifen oder Leisten (3).8. Sieve plate according to claim 1, characterized in that the base plate (1) between the strips or strips (3) in the areas of the perforation (2) is additionally armored, the height of the armor (6) being equal to or less than that Height of the strips or strips (3). 9. Siebbelag mit gegossenen Siebplatten nach Anspruch 1, dadurch gekennzeichnet, daß in Förderrichtung auf einanderfolgende Siebplatten quer zur Förderrichtung um die Breite der Sieblochung (2) bzw. der Streifen oder Leisten (3) versetzt zueinander angeordnet sind.9. Screen covering with cast screen plates according to claim 1, characterized in that in the conveying direction on successive screen plates transversely to the conveying direction by the width of the screen hole (2) or the strips or strips (3) are arranged offset to one another.
EP81105234A 1980-10-29 1981-07-06 Screen plate Expired EP0050709B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81105234T ATE13020T1 (en) 1980-10-29 1981-07-06 SCREEN PLATE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3040710 1980-10-29
DE19803040710 DE3040710A1 (en) 1980-10-29 1980-10-29 Poured sieve plate

Publications (2)

Publication Number Publication Date
EP0050709A1 true EP0050709A1 (en) 1982-05-05
EP0050709B1 EP0050709B1 (en) 1985-05-02

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Application Number Title Priority Date Filing Date
EP81105234A Expired EP0050709B1 (en) 1980-10-29 1981-07-06 Screen plate

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EP (1) EP0050709B1 (en)
AT (1) ATE13020T1 (en)
DE (2) DE3040710A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2634148A3 (en) * 1988-07-13 1990-01-19 Lorfonte Sa Screening net for granular materials, in particular coke
WO2012035437A3 (en) * 2010-09-17 2012-06-21 Inflotek B.V. Improved filters, screens, screen inserts, and methods of making

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT383055B (en) * 1983-08-18 1987-05-11 Hutter & Schrantz Ag SCREEN BASE FOR VIBRATING SCREENING MACHINES
DE3703221A1 (en) * 1987-02-04 1988-08-18 Wahl Verschleiss Tech METHOD FOR PRODUCING WEAR CLAIMS, A VARIETY OF SCREENS CONTAINING SCREEN OPENINGS
SE8802999L (en) * 1988-08-26 1990-02-27 Panel International Ltd FILTER ELEMENT
DE19719482C2 (en) * 1997-05-07 2000-05-11 Voith Sulzer Stoffaufbereitung Sieve for fiber suspensions and process for its manufacture

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE671593C (en) * 1937-09-15 1939-02-10 Bernhard Ungerland Transport sieve for sieving and conveying bulk goods
FR1191721A (en) * 1957-02-20 1959-10-21 Rosenthal Isolatoren Gmbh Perforated screening bottom, in particular for screening machines and centrifugal machines, and its manufacturing process
DE1230292B (en) * 1966-03-11 1966-12-08 Haver & Boecker Sieve floors
DE2318646B1 (en) * 1973-04-13 1974-01-03 Verschleiß-Technik Dr.-Ing. Hans Wahl, 7304 Ruh Wear resistant sieve - made by weld coating already perforated plate
DE2532379A1 (en) * 1975-07-19 1977-02-10 Schade Maschf Gustav Coated sieve plate - has cladding of hard wearing material round perforations
DE2532375A1 (en) * 1975-07-19 1977-02-10 Schade Maschf Gustav Sieve plate with wear resistant coating - has coating applied round holes only
AU1780276A (en) * 1975-09-19 1978-03-23 Mason & Cox Proprietary Limited Improved screen plate

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE671593C (en) * 1937-09-15 1939-02-10 Bernhard Ungerland Transport sieve for sieving and conveying bulk goods
FR1191721A (en) * 1957-02-20 1959-10-21 Rosenthal Isolatoren Gmbh Perforated screening bottom, in particular for screening machines and centrifugal machines, and its manufacturing process
DE1230292B (en) * 1966-03-11 1966-12-08 Haver & Boecker Sieve floors
DE2318646B1 (en) * 1973-04-13 1974-01-03 Verschleiß-Technik Dr.-Ing. Hans Wahl, 7304 Ruh Wear resistant sieve - made by weld coating already perforated plate
DE2532379A1 (en) * 1975-07-19 1977-02-10 Schade Maschf Gustav Coated sieve plate - has cladding of hard wearing material round perforations
DE2532375A1 (en) * 1975-07-19 1977-02-10 Schade Maschf Gustav Sieve plate with wear resistant coating - has coating applied round holes only
AU1780276A (en) * 1975-09-19 1978-03-23 Mason & Cox Proprietary Limited Improved screen plate

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 2, Nr. 69, 25. Mai 1978, seite 1399M78 & JP-A-53 032467 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2634148A3 (en) * 1988-07-13 1990-01-19 Lorfonte Sa Screening net for granular materials, in particular coke
WO2012035437A3 (en) * 2010-09-17 2012-06-21 Inflotek B.V. Improved filters, screens, screen inserts, and methods of making
US9751190B2 (en) 2010-09-17 2017-09-05 Inflotek B.V. Filters, screens, screen inserts, and methods of making same

Also Published As

Publication number Publication date
DE3170271D1 (en) 1985-06-05
EP0050709B1 (en) 1985-05-02
DE3040710A1 (en) 1982-05-27
ATE13020T1 (en) 1985-05-15

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