EP1059381B1 - Rotor for a pulper - Google Patents
Rotor for a pulper Download PDFInfo
- Publication number
- EP1059381B1 EP1059381B1 EP99111193A EP99111193A EP1059381B1 EP 1059381 B1 EP1059381 B1 EP 1059381B1 EP 99111193 A EP99111193 A EP 99111193A EP 99111193 A EP99111193 A EP 99111193A EP 1059381 B1 EP1059381 B1 EP 1059381B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- wear
- rotor blade
- wear protection
- protection element
- 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.)
- Expired - Lifetime
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
- D21B1/347—Rotor assemblies
Definitions
- the invention relates to a rotor for a stock preparation machine according to the preamble of claim 1.
- a rotor of the type mentioned above for a stock preparation machine is known. In most cases, it not only serves to circulate the stock suspension, but also at the same time also for crushing the material contained in the stock suspension Paper material. If it is moved directly past a sieve, it keeps it from Blockages free; it therefore serves as a screen clearer. In this known rotor, seen in the direction of rotation of the rotor, leading front surface of each rotor blade Wear protection is applied by welding wear-resistant material.
- the rotor is on the rotor arms Wear parts equipped in cooperation with attached to the sieve Parts should shred the paper stock. As Fastening options for the wearing parts are solder connections and Dowel pins suggested.
- the wear protection element from the base body and wear-resistant armor made separately and only then on the rotor wing welded This means that thick welding can now be carried out on the currently customary process Armor on the rotor blades can be dispensed with, due to the material structure of the Rotor blade is adversely affected.
- the executed according to the invention Welded connection is only used to fasten the wear protection element and is therefore much more gentle to manufacture.
- Another advantage is that the Edges on the wear protection element are pre-processed accordingly before installation are, so that a time-consuming grinding of the edges on the rotor is eliminated.
- the wear protection element can be shredded sufficiently by separation removed at the weld seam and replaced by a new wear protection become. It is best to loosen and replace the wear protection elements Removal of the rotor from the stock preparation machine. The replacement of worn out Rotors can then be made using "replacement rotors".
- the hydraulic Effectively influence the effect of the rotor blade for example, the To change flow movements within the stock suspension or the To increase or decrease the size reduction effect of the rotor.
- the stock preparation machines for different Equip operating conditions without leaving the basic rotor concept would.
- the rotor 1 shown in FIG. 1 has a total of six curved rotor blades 3 on.
- the rotor blades are provided with wear protection elements 5, which on the in Rotation direction R of the rotor 1 seen, leading front surfaces 4 welded are.
- the wear protection element is not on a rotor blade 3 shown so that the leading front surface 4 is exposed. It makes sense When using the rotor in the stock preparation machine, all rotor blades 3 provided with wear protection elements 5. These bear on their front surfaces wear-resistant work surfaces 7.
- Fig. 2 shows a section through both a rotor blade 3, and through a Wear protection element 5 is placed.
- the Wear protection element 5 consists of a base body 6 to which the wear-resistant work surfaces 7 are attached. These are expedient Work surfaces 7 generated by cladding.
- the Cladding welded to the base body 6 before it is attached to the rotor wing 3 is welded on. This construction of the rotor results in very good ones Possibilities to design the wear-protected work surfaces 7 so that they Requirements when using the rotor are sufficient.
- the illustration in Fig. 2 is so too understand that in the installed state the lower side of the rotor of the container wall is facing, while the upper side faces the container interior volume.
- the lower front edge 9 is of particular importance to the rotor. If e.g. the Container is provided with a sieve, which is free of clogging by the rotor is to be held is the shape of this part of the wear-resistant work surface 7 and the leading edge 9 are particularly important. But the upper front edge 8 also works on the work result of the rotor. At the lower front edge 9 is the Work surface 7 with the angle a against the vertical. That is for him The clearing effect of the rotor is very beneficial. In other cases, it can be cheaper Adjust the work surface vertically, i.e. with an angle ⁇ of 0 °, or with a negative angle.
- Fig. 3 shows the part of a wear protection element 5 according to the invention, which has a cone-shaped curved back 10 and with something else wear-resistant work surfaces 7 than that in Fig. 2 is provided.
- Logically is the part of the rotor blade to be connected to this wear protection element 5 (not shown) cone-shaped in the same way to weld on facilitate and to be able to optimally intercept the occurring forces.
- rotors with straight rotor blades are also possible in the embodiment according to the invention.
- the wear protection elements are 5 " as straight strips and are also on straight front surfaces welded. This is considerably cheaper, but only makes sense with rotors that can serve their purpose in this form.
- Pulp preparation machines required for the use of the invention Rotors are provided, in particular paper pulp solvents.
- the secondary substance solver e.g. 6, what is the wear resistance and the hydraulic effect of the rotors used in it, particularly demanding. This is because of the Compactness of such machines and the high throughput.
- Substance in Secondary material is processed, especially waste paper, usually contains one considerable proportion of foreign matter, which can severely clog the rotor.
- the Reliable operation of such machines depends on the screens being reliable be kept free from constipation.
- there is also a Dissolving effect i.e. a further shredding of the suspended paper stock it is asked for.
- the secondary substance dissolver shown here has for the pulp suspension a central inlet 11 into the housing 2.
- the rotor 1 holds the screen 12 from Blockages free and creates the material circulation in the housing 2 (arrows 13).
- the function such secondary substance dissolver is generally known. Variants are in the Flow guidance possible, e.g. a tangential inlet and central reject drain.
- FIG. 7 shows a typical primary substance solver. Its function is also general known. It can be seen that the rotor 1 rotates at the bottom of the container 2 ' and thereby keeps the sieve 12 sitting on the floor free. With a primary substance solver the paper pulp S together with water W over the free surface of the Suspension entered.
Description
Die Erfindung betrifft einen Rotor für eine Papierstoffaufbereitungsmaschine gemäß
dem Oberbegriff des Anspruchs 1.The invention relates to a rotor for a stock preparation machine according to
the preamble of
Ein Rotor der eingangs genannten Art für eine Papierstoffaufbereitungsmaschine ist bekannt. Zumeist dient er nicht nur zum Umwälzen der Stoffsuspension, sondern gleichzeitig auch zum Zerkleinern von in der Stoffsuspension enthaltenem Papiermaterial. Wird er direkt an einem Sieb vorbeibewegt, hält er es von Verstopfungen frei; er dient also als Siebräumer. Bei diesem bekannten Rotor ist an der, in Rotationsrichtung des Rotors gesehen, führenden Vorderfläche jedes Rotorflügels durch Aufschweißen verschleißfesten Materials ein Verschleißschutz aufgebracht.A rotor of the type mentioned above for a stock preparation machine is known. In most cases, it not only serves to circulate the stock suspension, but also at the same time also for crushing the material contained in the stock suspension Paper material. If it is moved directly past a sieve, it keeps it from Blockages free; it therefore serves as a screen clearer. In this known rotor, seen in the direction of rotation of the rotor, leading front surface of each rotor blade Wear protection is applied by welding wear-resistant material.
In anderen Fällen, z.B. gemäß DE 196 49 764 A, ist der Rotor an den Rotorarmen mit Verschleißteilen ausgestattet, die im Zusammenwirken mit auf dem Sieb befestigten Teilen eine Zerkleinerung des Papierstoffs bewirken sollen. Als Befestigungsmöglichkeiten für die Verschleißteile werden Lötverbindungen und Spannstifte vorgeschlagen.In other cases, e.g. According to DE 196 49 764 A, the rotor is on the rotor arms Wear parts equipped in cooperation with attached to the sieve Parts should shred the paper stock. As Fastening options for the wearing parts are solder connections and Dowel pins suggested.
An einem Pulper-Laufrad, das in der WO 98/49389 A beschrieben ist, sind gepanzerte Verschleißteile angeschraubt.On a pulper impeller, which is described in WO 98/49389 A, are armored Screwed wear parts.
Es ist Aufgabe der Erfindung, einen Rotor für eine Papierstoffaufbereitungsmaschine bzw. ein Verschleißschutzelement zum Schutz von Rotorflügeln zu schaffen, bei dem bzw. durch dessen Verwendung die Festigkeit der Rotorflügel wesentlich erhöht wird. Eventuell soll auch ein Ersatz verschlissener Teile ohne Beschädigung der Rotorblätter möglich sein. It is an object of the invention to provide a rotor for a stock preparation machine or to create a wear protection element for protecting rotor blades, in which or by using the strength of the rotor blades is significantly increased. Possibly also a replacement of worn parts without damaging the rotor blades to be possible.
Diese Aufgabe wird bei einem Rotor der eingangs genannten Art durch die im
Kennzeichen des Anspruchs 1 genannten Merkmale gelöst.This task is performed in a rotor of the type mentioned in the
Characteristic of
Bei der Erfindung wird das Verschleißschutzelement aus Grundkörper und verschleißfester Panzerung separat hergestellt und erst dann am Rotorflügel angeschweißt. Dadurch kann auf das derzeit übliche aufwendige Aufschweißen von dicken Panzerungen an den Rotorflügeln verzichtet werden, durch das das Werkstoffgefüge der Rotorflügel nachteilig beeinflußt wird. Die erfindungsgemäß ausgeführte Schweißverbindung dient nur noch der Befestigung des Verschleißschutzelementes und ist daher wesentlich schonender herzustellen. Ein weiterer Vorteil liegt darin, daß die Kanten am Verschleißschutzelement bereits vor dem Einbau entsprechend vorbearbeitet sind, so daß ein zeitaufwendiges Zuschleifen der Kanten am Rotor entfällt.In the invention, the wear protection element from the base body and wear-resistant armor made separately and only then on the rotor wing welded. This means that thick welding can now be carried out on the currently customary process Armor on the rotor blades can be dispensed with, due to the material structure of the Rotor blade is adversely affected. The executed according to the invention Welded connection is only used to fasten the wear protection element and is therefore much more gentle to manufacture. Another advantage is that the Edges on the wear protection element are pre-processed accordingly before installation are, so that a time-consuming grinding of the edges on the rotor is eliminated.
Sobald die Rotorflügel des Rotors nicht mehr in ausreichendem Maße die Stoffsuspension im Behälter umwälzen oder das in der Stoffsuspension enthaltene Papiermaterial nicht mehr ausreichend zerkleinert wird, kann das Verschleißschutzelement durch Trennung an der Schweißnaht ausgebaut und durch einen neuwertigen Verschleißschutz ersetzt werden. Das Lösen und Ersetzen der Verschleißschutzelemente erfolgt am besten nach Ausbau des Rotors aus der Stoffaufbereitungsmaschine. Der Ersatz verschlissener Rotoren kann dann durch "Austauschrotoren" erfolgen.As soon as the rotor blades of the rotor no longer have sufficient material suspension do not circulate in the container or the paper material contained in the stock suspension the wear protection element can be shredded sufficiently by separation removed at the weld seam and replaced by a new wear protection become. It is best to loosen and replace the wear protection elements Removal of the rotor from the stock preparation machine. The replacement of worn out Rotors can then be made using "replacement rotors".
Man muß davon ausgehen, daß die Beanspruchung des Verschleißschutzelementes durch die bei Betrieb angreifenden Kräfte sehr hoch ist. Solche Kräfte lassen sich aber ohne weiteres auffangen, wenn die Vorderfläche des Rotorflügels und die Hinterfläche des Verschleißschutzelementes so aufeinander abgestimmt sind, daß eine große tragende Fläche angeboten wird. Dann genügt eine relativ schwache Schweißnaht zur sicheren Befestigung, die auch im Bedarfsfalle wieder gelöst werden kann.It must be assumed that the wear protection element is stressed by the forces acting during operation are very high. But such forces can be without collect more if the front surface of the rotor blade and the rear surface of the Wear protection element are coordinated so that a large load-bearing Area is offered. Then a relatively weak weld seam is sufficient for the safe Fastening that can also be released if necessary.
Durch spezielle Ausgestaltung des Verschleißschutzes kann man die hydraulische Wirkung des Rotorflügels gezielt beeinflussen, um beispielsweise die Strömungsbewegungen innerhalb der Stoffsuspension zu verändern oder die Zerkleinerungswirkung des Rotors zu verstärken bzw. zu verringern. Auf diese Weise ist es möglich, die Papierstoffaufbereitungsmaschinen für unterschiedliche Betriebsbedingungen auszurüsten, ohne daß das Rotor-Grundkonzept verlassen werden müßte. In der Praxis der Papierstoffaufbereitung gibt es nämlich eine Vielzahl unterschiedlicher Anforderungen, z.B. wegen der Rohstoffe.Due to the special design of the wear protection, the hydraulic Effectively influence the effect of the rotor blade, for example, the To change flow movements within the stock suspension or the To increase or decrease the size reduction effect of the rotor. In this way it is possible to use the stock preparation machines for different Equip operating conditions without leaving the basic rotor concept would. In practice, there are a large number of paper preparation processes different requirements, e.g. because of the raw materials.
Die Erfindung und ihre Vorteile werden erläutert an Hand von Zeichnungen. Dabei zeigen:
- Fig. 1
- einen erfindungsgemäßen Rotor in Aufsicht;
- Fig. 2
- Schnitt durch eine Rotorflügel-/Verschleißschutzelement-Verbindung;
- Fig. 3
- Teil eines Verschleißschutzelementes, teilperspektivisch gezeichnet;
- Fig. 4
- Schnitt durch eine weitere Ausführungsform;
- Fig. 5
- einen Rotor mit geraden Flügeln;
- Fig. 6
- einen Sekundärstofflöser als Verwendungsbeispiel für den erfindungsgemäßen Rotor;
- Fig. 7
- einen Primärstofflöser als Verwendungsbeispiel für den erfindungsgemäßen Rotor.
- Fig. 1
- a rotor according to the invention in supervision;
- Fig. 2
- Section through a rotor blade / wear protection element connection;
- Fig. 3
- Part of a wear protection element, partly perspective;
- Fig. 4
- Section through a further embodiment;
- Fig. 5
- a rotor with straight blades;
- Fig. 6
- a secondary substance solver as an example of use for the rotor according to the invention;
- Fig. 7
- a primary substance solver as an example of use for the rotor according to the invention.
Der in Fig. 1 dargestellte Rotor 1 weist insgesamt sechs geschwungene Rotorflügel 3
auf. Die Rotorflügel sind mit Verschleißschutzelementen 5 versehen, welche an den, in
Rotationsrichtung R des Rotors 1 gesehen, führenden Vorderflächen 4 angeschweißt
sind. Zur Verdeutlichung ist an einem Rotorflügel 3 das Verschleißschutzelement nicht
eingezeichnet, so daß dort die führende Vorderfläche 4 freiliegt. Sinnvollerweise sind
bei Verwendung des Rotors in der Papierstoffaufbereitungsmaschine alle Rotorflügel 3
mit Verschleißschutzelementen 5 versehen. Diese tragen an ihren Vorderflächen
verschleißgeschützte Arbeitsflächen 7.The
Die Fig. 2 zeigt einen Schnitt, der sowohl durch einen Rotorflügel 3, als auch durch ein
Verschleißschutzelement 5 gelegt ist. Dabei ist erkennbar, daß das
Verschleißschutzelement 5 aus einem Grundkörper 6 besteht, an den die
verschleißgeschützten Arbeitsflächen 7 angebracht sind. Zweckmäßigerweise sind diese
Arbeitsflächen 7 durch Auftragsschweißen erzeugt. Wie bereits erwähnt, wird die
Auftragsschweißung an den Grundkörper 6 angebracht, bevor dieser an den Rotorflügel
3 angeschweißt wird. Auf Grund dieses Aufbaus des Rotors ergeben sich sehr gute
Möglichkeiten, die verschleißgeschützten Arbeitsflächen 7 so zu gestalten, daß sie den
Ansprüchen bei Benutzung des Rotors genügen. Die Darstellung in Fig. 2 ist so zu
verstehen, daß im Einbauzustand die unten liegende Seite des Rotors der Behälterwand
zugewandt ist, während die oben liegende Seite zum Behälterinnenvolumen weist. Daher
fällt der unteren Vorderkante 9 eine besondere Bedeutung des Rotors zu. Wenn z.B. der
Behälter mit einem Sieb versehen ist, welches durch den Rotor von Verstopfung frei
gehalten werden soll, ist die Form dieses Teils der verschleißgeschützten Arbeitsfläche
7 und der Vorderkante 9 besonders wichtig. Aber auch die obere Vorderkante 8 wirkt
sich auf das Arbeitsergebnis des Rotors aus. An der unteren Vorderkante 9 ist die
Arbeitsfläche 7 mit dem Winkel a gegen die Senkrechte angestellt. Das ist für den
Räumeffekt des Rotors sehr förderlich. In anderen Fällen kann es günstiger sein, die
Arbeitsfläche senkrecht anzustellen, also mit einem Winkel α von 0°, oder auch mit
einem negativen Winkel.Fig. 2 shows a section through both a
Fig. 3 zeigt den Teil eines erfindungsgemäßen Verschleißschutzelementes 5, welches
eine kegelringförmig gebogene Rückseite 10 aufweist und mit etwas anderen
verschleißgeschützten Arbeitsflächen 7 als die in Fig. 2 versehen ist. Sinnvollerweise
ist der mit diesem Verschleißschutzelement 5 zu verbindende Teil des Rotorflügels
(nicht gezeichnet) in derselben Weise kegelringförmig geformt, um das Anschweißen zu
erleichtern und um die auftretenden Kräfte optimal abfangen zu können.Fig. 3 shows the part of a
Die in Fig. 4 gezeigte Verbindung von Rotorflügel 3 und Verschleißschutzelement 5' ist
mit einem Absatz ausgeführt, was die Montage und das Auftrennen erleichtert. Der
Rotorflügel 3' ist wesentlich vereinfacht.The connection shown in FIG. 4 of the
Wie Fig. 5 an einem weiteren Beispiel zeigt, sind auch Rotoren mit geraden Rotorflügeln in der erfindungsgemäßen Ausführung möglich. Die Verschleißschutzelemente 5" sind als gerade Leisten ausgeführt und werden an ebenfalls gerade Vorderflächen angeschweißt. Das ist beträchtlich billiger, aber nur bei solchen Rotoren sinnvoll, die in dieser Form ihren Zweck erfüllen können.As shown in FIG. 5 in a further example, rotors with straight rotor blades are also possible in the embodiment according to the invention. The wear protection elements are 5 " as straight strips and are also on straight front surfaces welded. This is considerably cheaper, but only makes sense with rotors that can serve their purpose in this form.
Papierstoffaufbereitungsmaschinen, die für die Verwendung des erfindungsgemäßen
Rotors vorgesehen sind, sind insbesondere Papierstofflöser. Dabei unterscheidet man
zwischen Primärstofflösern und Sekundärstofflösern. Der Sekundärstofflöser, z.B.
gemäß der Fig. 6, ist, was die Verschleißfestigkeit und die hydraulische Wirkung des
darin verwendeten Rotors angeht, besonders anspruchsvoll. Das liegt an der
Kompaktheit solcher Maschinen und dem hohen Durchsatz. Stoff, der in
Sekundärstofflösem bearbeitet wird, insbesondere Altpapier, enthält zumeist einen
beträchtlichen Anteil von Fremdstoffen, welche dem Rotor stark zusetzen. Die
betriebssichere Funktion solcher Maschinen hängt davon ab, daß die Siebe zuverlässig
von Verstopfungen freigehalten werden. Hinzu kommt, daß in vielen Fällen auch eine
Auflösewirkung, d.h. eine weitere Zerkleinerung des suspendierten Papierstoffes
gewünscht wird. Alle diese Anforderungen führen dazu, daß die Rotoren verschleißfest
sein müssen und daß die Arbeitskanten dieser Rotoren möglichst lange in der
vorgesehenen Form verbleiben, bevor sie durch Verschleiß z.B. abgerundet oder
abgetragen sind. Der hier gezeigte Sekundärstofflöser hat für die Papierstoffsuspension
einen zentralen Einlauf 11 in das Gehäuse 2. Der Rotor 1 hält das Sieb 12 von
Verstopfungen frei und erzeugt im Gehäuse 2 den Stoffumtrieb (Pfeile 13). Der Teil der
Suspension, der das Sieb 12 passiert hat, verläßt das Gehäuse durch die Gutstofföffnung
14, während das Abgewiesene durch den Rejektabfluss 15 ausgeleitet wird. Die Funktion
solcher Sekundärstofflöser ist allgemein bekannt. Varianten sind in der
Strömungsführung möglich, z.B. ein tangentialer Einlauf und zentraler Rejektabfluss.Pulp preparation machines required for the use of the invention
Rotors are provided, in particular paper pulp solvents. A distinction is made here
between primary substance solvents and secondary substance solvents. The secondary substance solver, e.g.
6, what is the wear resistance and the hydraulic effect of the
rotors used in it, particularly demanding. This is because of the
Compactness of such machines and the high throughput. Substance in
Secondary material is processed, especially waste paper, usually contains one
considerable proportion of foreign matter, which can severely clog the rotor. The
Reliable operation of such machines depends on the screens being reliable
be kept free from constipation. In addition, in many cases there is also a
Dissolving effect, i.e. a further shredding of the suspended paper stock
it is asked for. All of these requirements make the rotors wear-resistant
must be and that the working edges of these rotors as long as possible in the
intended shape remain before they are worn out e.g. rounded or
are worn out. The secondary substance dissolver shown here has for the pulp suspension
a
Einen typischen Primärstofflöser zeigt die Fig. 7. Auch dessen Funktion ist allgemein
bekannt. Man erkennt, daß der Rotor 1 am Boden des Behälters 2' in Rotation versetzt
wird und dadurch das am Boden sitzende Sieb 12 frei hält. Bei einem Primärstofflöser
wird der Papierfaserstoff S zusammen mit Wasser W über die freie Oberfläche der
Suspension eingetragen.FIG. 7 shows a typical primary substance solver. Its function is also general
known. It can be seen that the
Claims (10)
- Rotor (1) for a pulp preparation machine, which rotor is disposed in a container (2) of the pulp preparation machine and comprises at least one rotor blade (3) for circulating a pulp suspension which is contained in the container (2), wherein a wear protection is provided at a front face (4), which leads when viewed in the direction of rotation of the rotor (1), of the rotor blade (3), which protection is welded to the rotor blade (3), and
a wear protection element (5, 5', 5") is used for wear protection, this comprising a base body (6) with at least one wear-protected working face (7) which is produced by deposition welding of wear-resistant material before the base body (6) is welded to the rotor blade (3). - Rotor according to Claim 1,
characterised in that at least one sub-portion, beginning at the free end of the rotor blade (3), of the front face (4) of the respective rotor blade (3) is completely covered by the wear protection element (5, 5', 5"). - Rotor according to Claim 1 or 2,
characterised in that the wear protection element (5, 5', 5") which is secured to the rotor blade (3) projects in the direction of the side of the rotor blade (3) which faces the container bottom beyond the front face (4) of the rotor blade (3). - Rotor according to Claim 1, 2 or 3,
characterised in that the front side of the wear protection element (5, 5', 5") extends in bevelled fashion in the direction of the side of the rotor blade (3) which faces the container wall at an angle (α) which lies between 1 and 45° such that the radial distance of the front side from the axis of rotation increases in the direction of the container wall. - Rotor according to any one of the preceding Claims,
characterised in that the leading front face (4) has the shape of a cylindrical or conical ring segment. - Rotor according to any one of the preceding Claims,
characterised in that the base body (6) is provided with a rear side (10) which is shaped such that it can be welded to front face (4), which leads when viewed in the direction of rotation of the rotor (1), of the rotor blade (3) which is to be protected. - Rotor according to Claim 6,
characterised in that the wear-protected working face (7) is formed from a wear-resistant material, preferably a stainless, alloyed steel. - Rotor according to Claim 6 or 7,
characterised in that the base body (6) has the shape of a cylindrical or conical ring segment. - Rotor according to Claim 6, 7 or 8,
characterised in that the wear-protected working face (7) comprises at least one front edge (8, 9) which, viewed in the direction of rotation of the rotor (1), extends forward. - Rotor according to Claim 9,
characterised in that the radius of curvature of the front edge (8, 9) is at most 2 mm.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE59909240T DE59909240D1 (en) | 1999-06-09 | 1999-06-09 | Rotor for a stock preparation machine |
| EP99111193A EP1059381B1 (en) | 1999-06-09 | 1999-06-09 | Rotor for a pulper |
| DE10016560A DE10016560A1 (en) | 1999-06-09 | 2000-04-03 | Rotor for a stock preparation machine and wear protection element for such a rotor |
| US09/577,570 US6705554B1 (en) | 1999-06-09 | 2000-05-25 | Rotor for a paper stock processing machine, anti-wear element for such a rotor, and paper stock processing apparatus |
| CA002311018A CA2311018A1 (en) | 1999-06-09 | 2000-06-08 | Rotor for a paper stock processing machine, anti-wear element for such a rotor, and paper stock processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99111193A EP1059381B1 (en) | 1999-06-09 | 1999-06-09 | Rotor for a pulper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1059381A1 EP1059381A1 (en) | 2000-12-13 |
| EP1059381B1 true EP1059381B1 (en) | 2004-04-21 |
Family
ID=8238327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99111193A Expired - Lifetime EP1059381B1 (en) | 1999-06-09 | 1999-06-09 | Rotor for a pulper |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6705554B1 (en) |
| EP (1) | EP1059381B1 (en) |
| CA (1) | CA2311018A1 (en) |
| DE (2) | DE59909240D1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10248260B4 (en) * | 2002-10-16 | 2006-07-06 | Ask High Technology Technische Entwicklungen Gmbh & Co. Betriebs-Kg | Device for crushing material and shredding tool for such a device |
| DE202004010009U1 (en) * | 2004-06-25 | 2004-09-23 | Voith Paper Patent Gmbh | Secondary pulp solver for pulp processing |
| DE102005019010A1 (en) * | 2005-04-22 | 2006-10-26 | Maschinenfabrik Gustav Eirich Gmbh & Co. Kg | Mixing blades with detachable wear element |
| EP1777339B1 (en) * | 2005-10-19 | 2010-10-06 | Voith Patent GmbH | Screening device for paper pulp |
| AU2006233263B2 (en) * | 2006-10-02 | 2012-05-03 | Aon Invent Llc | Safety propeller |
| US9004381B2 (en) * | 2009-06-23 | 2015-04-14 | Zoeller Pump Company, Llc | Grinder pump basin system |
| CN103015242B (en) * | 2013-01-22 | 2015-05-13 | 富民宝地纸业有限公司 | Efficient rotating cutter device for waste paper pulping cutting |
| CN103225224B (en) * | 2013-05-14 | 2016-12-07 | 富阳市以勒科技有限公司 | Cone breaker device in hydrabrusher |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3304056A (en) * | 1965-03-19 | 1967-02-14 | Hitachi Ltd | Turbine blades |
| US3365126A (en) * | 1965-09-01 | 1968-01-23 | Gen Electric | Compressor blade |
| US3608976A (en) * | 1969-09-12 | 1971-09-28 | Fines A Zugelder | Fan blade having wear-resistant ribs and fan including a plurality of same |
| US4480796A (en) * | 1982-01-25 | 1984-11-06 | Beloit Corporation | Pulping apparatus including improved rotor |
| DE4308225C1 (en) * | 1993-03-16 | 1994-11-24 | Escher Wyss Gmbh | Process for sorting fiber suspension and screening device for carrying it out |
| DE19649764C2 (en) * | 1995-12-02 | 2000-11-30 | Ask High Technology Tech Entwi | Device for shredding material, in particular waste paper |
| BE1010118A3 (en) * | 1996-04-05 | 1998-01-06 | Magotteaux Int | Mixer propeller |
| SE509293C2 (en) * | 1997-04-29 | 1999-01-11 | Cellwood Machinery Ab | Device at mass solver |
-
1999
- 1999-06-09 DE DE59909240T patent/DE59909240D1/en not_active Expired - Lifetime
- 1999-06-09 EP EP99111193A patent/EP1059381B1/en not_active Expired - Lifetime
-
2000
- 2000-04-03 DE DE10016560A patent/DE10016560A1/en not_active Withdrawn
- 2000-05-25 US US09/577,570 patent/US6705554B1/en not_active Expired - Fee Related
- 2000-06-08 CA CA002311018A patent/CA2311018A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CA2311018A1 (en) | 2000-12-09 |
| DE59909240D1 (en) | 2004-05-27 |
| EP1059381A1 (en) | 2000-12-13 |
| US6705554B1 (en) | 2004-03-16 |
| DE10016560A1 (en) | 2000-12-14 |
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