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EP1036877B1 - Rotor avec protecteur anti-usure pour un pulpeur - Google Patents

Rotor avec protecteur anti-usure pour un pulpeur Download PDF

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Publication number
EP1036877B1
EP1036877B1 EP19990104475 EP99104475A EP1036877B1 EP 1036877 B1 EP1036877 B1 EP 1036877B1 EP 19990104475 EP19990104475 EP 19990104475 EP 99104475 A EP99104475 A EP 99104475A EP 1036877 B1 EP1036877 B1 EP 1036877B1
Authority
EP
European Patent Office
Prior art keywords
rotor
rotor blade
wear protector
front surface
wear
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
Application number
EP19990104475
Other languages
German (de)
English (en)
Other versions
EP1036877A1 (fr
Inventor
Roland Reinhold
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.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
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 Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Priority to DE59901791T priority Critical patent/DE59901791D1/de
Priority to EP19990104475 priority patent/EP1036877B1/fr
Publication of EP1036877A1 publication Critical patent/EP1036877A1/fr
Application granted granted Critical
Publication of EP1036877B1 publication Critical patent/EP1036877B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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, which is arranged in a container of the stock preparation machine and a plurality of rotor blades for circulating one in the container contained stock suspension and for crushing in the stock suspension Contained paper material, with one in the direction of rotation seen from the rotor leading front surface of each rotor blade wear protection is releasably attached.
  • the invention further relates to a Wear protection according to the preamble of claim 6 for the protection of a Rotor blade on a rotor of a stock preparation machine.
  • WO 98/49 389 describes a pulper with one in a container rotatably drivable rotor.
  • the rotor has a helical screw Circulating the stock suspension in the container, taking on the bottom the helix with the same distance from each other several radially rotor blades projecting outwards are formed.
  • On the in the direction of rotation seen from the rotor leading front surface of each rotor blade wear protection releasably attached.
  • From GB 5018 A.D. 1914 is a rotor for a stock preparation machine known, the two or three radially outwardly projecting rotor blades having. Wear protection is provided at the free end of each rotor blade made of a wear-resistant material by screws, rivets, Pin or the like releasably attached.
  • BE 1 010 118 also describes one for a stock preparation machine usable rotor with multiple blades that each with an arcuate course in the direction of the respective free End of decreasing cross-section, with one on each rotor blade arcuate wear protection is releasably attached.
  • EP 328 500 A2 describes a rotor for a stock preparation machine known, on the radially outwardly projecting from its hub Each rotor blade is attached to a wear protection, whereby on the front surface of each wear protection, as seen in the direction of rotation Form elements are formed.
  • the wear protection attached to each rotor blade easily expanded and with a new wear protection be replaced. This can be expensive on the currently usual Welding work on the rotor blades can be dispensed with, through which the Material structure of the rotor blades is adversely affected. Furthermore are the edges on the wear protection accordingly before installation pre-processed so that a time-consuming grinding of the edges on the rotor eliminated.
  • the wear protection with its side edges at least partially extends beyond the contour delimiting the front surface of the rotor blade, are the edges of the rotor blade due to the wear protection protected so that the rotor blades through the use the wear protection designed according to the invention compared to that in conventionally protected against wear rotor blades over a are ready for use for a longer period of time.
  • the rotor it is proposed that at least a portion of the front surface of the respective rotor blade, that starts from the free end of the rotor blade, completely with the Cover wear protection. This ensures that in particular the partial section starting from the free end of the rotor blade of the rotor blade, which is smaller compared to the radial sections Distance to the axis of rotation of the rotor due to the higher peripheral speed is exposed to correspondingly higher loads, is adequately protected against wear.
  • the wear protection is preferably a reliable Screw connection used.
  • a reliable Screw connection used for this purpose, one is preferred Embodiment of wear protection on the front surface of the rotor blade facing back at least one Bolt provided, which is preferably on the rotor blade by a self-locking nut can be screwed.
  • a Screw connection is a very quick and easy exchange of the Wear protection possible.
  • wear protection can be found on the back a centering pin or a key may be provided, the or received in a bore or groove formed on the rotor blade is what the wear protection during operation attacking radial, shear and / or shear forces are absorbed.
  • the centering pin can also be attached to the rotor blade and in one Drill hole on the lock protection must be included.
  • At least one of the side edges of the wear protection to form several recesses with which the circulating movements in the stock suspension during the rotation of the Rotors can be influenced in a targeted manner.
  • FIG. 1 shows a top view of a first exemplary embodiment of a rotor 10 for a stock preparation machine (not shown), such as a pulper, a pulper, a fiberizer or the like.
  • the rotor 10 has a rotationally symmetrical base body 12, by a correspondingly designed shaft-hub connection with the Drive shaft of an electric drive (not shown) of the stock preparation machine connected is.
  • the rotor 10 is within one Container (not shown) of the stock preparation machine.
  • Every rotor blade 14 is designed as a plate and has the shape of an unequal leg Trapezium.
  • the rotor blade 14 is on the base body 12 attached that it with its flat side in a parallel to the axis of rotation of the rotor 10 extending plane is arranged and in tangential Running towards the base body 12, with its longer one of the two parallel side edges on the base body is welded.
  • an approximately triangular support plate 16 is provided, which in a perpendicular is arranged to the axis of rotation of the rotor 10 extending plane.
  • the Support plate 16 is with one of its side edges on the in the direction of rotation 18 of the rotor 10 seen (counterclockwise in Fig. 1) leading Front surface 20 of the subsequent rotor blade 14 and the Shell surface of the base body 12 welded.
  • the support plate 16 is there arranged so that with its longest side edge on the in the direction of rotation 18 seen subsequent rear surface 22 of the upstream Rotor blade 14 rests and supports the rotor blade 14.
  • Wear protection 42 is provided on the front surface 20 of each rotor blade 14 made of a particularly wear-resistant material, preferably one stainless, alloyed stainless steel, such as a chrome-nickel-molybdenum steel, attached. 2 shows, the shape of the Wear protection 42 in approximately the shape of the rotor blade 14, the Wear protection 42 is dimensioned so that it over the free end 30 and the two side edges 32 and 34 of the respective rotor blade 14 protrude.
  • On the front surface facing away from the front surface 20 of the rotor blade 14 44 of the wear protection 42 is one in the side edges of the wear protection 42 partially merging, raised edge 46 formed, which is indicated in Fig. 2 by cross hatching. As in Fig. 1 shown, the raised edge 46 is provided with a chamfer so that the Wear protection 42 is chamfered on its side edges.
  • each wear protection 42 From the rear face facing the front surface 20 of the rotor blade 14 48 of each wear protection 42 are three bolts 50, 52 and 54, each of which is designed in a wear protection 42 Bore recorded and welded in this. Each bolt 50, 52 and 54 of the wear protection 42 protrudes through one of the Through bores 24, 26 and 28 and the sleeve assigned to them 36, 38 or 40. On the protruding from the sleeve 36, 38 or 40 Bolt 50, 52 or 54 is a nut 56, 58 or 60 screwed, with the wear protection 42 releasably on the respective rotor blade 14 is attached. To loosen the nuts 56, 58 and 60 during the To avoid rotation of the rotor 10 are in the present case self-locking nuts used. Instead of self-locking nuts other fuses can also be used that prevent the Prevent screw connections. For example, spring washers are suitable Tab washers with rags that are bent over or crown nuts, which are secured by split pins.
  • the rotor 10 For mixing the stock suspension in the container of the stock preparation machine the rotor 10 with the help of the electric drive spun.
  • the rotor blades 14 produce with them attached wear protection 42 both in the direction of the axis of rotation of the rotor 10 and in the radial direction with respect to the axis of rotation the rotor 10 flow movements through which the stock suspension is mixed. Any paper material contained in the stock suspension or even bales of paper thrown into the stock suspension at the same time from those formed on each wear protection 42 Edges crushed. Due to the finely divided fibers in the stock suspension the wear protection 42 are exposed to high wear, the Edges of each wear protection 42 are gradually rounded off.
  • FIG. 3 and 4 is a second embodiment of a rotor 70 shown.
  • the rotor 70 in a stock preparation machine (not shown) used, the Containers (not shown) has a sieve (not shown) through that the stock suspension flows out of the container.
  • the rotor 70 is in the immediate vicinity Arranged near the sieve and has next to its usual Function to circulate the stock suspension in the tank and floating Shred paper components, also the function of a expertsrs and should keep the sieve free of blockages.
  • the rotor 70 of which only a section is shown in FIG. 3, has a rotationally symmetrical base body 72 which rotatably with the An electric drive shaft (not shown) is connected. At the The circumference of the base body 72 is a plurality which are evenly spaced from one another Rotor blades 74 attached. Each rotor blade 74 has an attachment portion 76 (cf. FIG. 4) with which it is, for example, on the base body 72 is attached by screws. The attachment portion 76 goes in a rotor blade section 78 which is approximately perpendicular to the axis of rotation of the rotor 70 extending plane and an approximately triangular Has shape, the free end 80 shown in Fig. 3 blunt expires.
  • the rotor blade section 78 is arranged relative to the base body 72, that seen in the direction of rotation 82 of the rotor 70, subsequent rear surface 84 of the rotor blade 74 with respect to the axis of rotation of the rotor 70 runs radially, while one in the direction of rotation 82 of the Rotor 70 seen leading front surface 86 of the rotor blade 74 obliquely runs with respect to the base body 72.
  • the front surface 86 there are three holes at the same distance from one another 88, 90 and 92 formed, which are perpendicular to the rear surface 84 of the rotor blade 74 extend.
  • the two bores are 88 and 90 with a smaller radial distance from the axis of rotation of the rotor 70 formed as blind holes, while the farthest from the axis of rotation of the rotor 70 formed bore 92 as a through bore is formed and on the rear surface 84 of the rotor blade 74 in a recess 94 ends.
  • the rotor blade section 78 essentially has a rectangular cross-sectional shape and goes towards its free End 80 into an end section 96, the cross section of which is continuous increases and towards the bottom of the container Underside of the rotor blade 74 runs beveled, the radial distance the face of the free end 80 with respect to the axis of rotation decreases continuously.
  • a plate-shaped wear protection is on the front surface 86 of the rotor blade 74 98 attached, the contour of which is essentially the cross-sectional shape of the rotor blade section 78 and the end section 96 of the Rotor blade 74 corresponds.
  • Wear protection 98 is dimensioned such that it with its contour over the front surface 86 of the rotor blade 74 delimiting Contour protrudes, with its face parallel to the face of the end section 96 runs (see FIG. 3).
  • the rotor blade 74 stands from the rear face facing the front face 86 100 of wear protection 98 two pins 102 and 104 and one Bolt 106 off. Pins 102 and 104 and the bolt 106 are received in bores formed on the lock protection 98 and welded into it. 3 shows, the two run Pins 102 and 104 and the bolt 106 inclined to Back 100 of wear protection 98.
  • the angle of inclination of the pins 102 and 104 and the bolt 106 with respect to the rear 100 corresponds to the angle at which the front surface 86 of the rotor blade 74 extends with respect to the rear surface 84 of the rotor blade 74.
  • the two pins 102 and 104 are received in the blind holes 88 and 90.
  • the bolt 106 protrudes through the through hole 92 into the recess 94.
  • a nut 108 is screwed on.
  • a self-locking nut is used as nut 108, to prevent loosening of the screw connection.
  • a self-locking nut Fuses for screw connections are used.
  • the rotor 70 becomes circulating the stock suspension contained in the stock of the stock preparation machine used. This prevents from a particularly wear-resistant Material made wear protection 98 that the front surface 86 of the rotor blade 74 by and through the particles in the stock suspension after is removed. As soon as the wear protection 98 is no longer the desired one Circulation and crushing in the stock suspension contained paper materials and keeping the strainer of the container clear guaranteed, the wear protection 98 is replaced. To this Purpose when the rotor 70 is stationary, only the nut 108 of the respective Wear protection 98 released, the old wear protection 98 removed and be replaced by a new wear protection, which then again firmly connected to the rotor blade 74 with the aid of the nut 108 becomes.
  • FIG. 5 to 7 show a third exemplary embodiment of a rotor 110 for a stock preparation machine.
  • the structure of the rotor 110 corresponds essentially to the structure of that in the second embodiment described rotor 70.
  • the rotor 110 differs from the rotor 70 in that instead of two blind holes and one Through hole in the rotor blade 112 two through holes 114 and 116 are formed while the third bore is least radial Distance to the axis of rotation of the rotor 110 is formed as a blind hole 118 is.
  • the two through holes 114 and 116 each end in a formed on the rear surface 120 of the rotor blade 112 Recess 122 or 124.
  • the wear protection 126 of the third exemplary embodiment has a 128 on its rear side Pin 130 and two bolts 132 and 134, each in one Bore on wear protection 126 added and welded in this are.
  • the wear protection 126 mounted on the rotor blade 112 the pin 130 received in blind hole 118 while the two Bolts 132 and 134 through the two through holes 114 and 116 protrude into the two recesses 122 and 124.
  • On the in the recess 122 and 124 protruding portion of each bolt 132 and 134 a self-locking nut 136 or 138 is screwed, a release of the wear protection 126 from the rotor blade 112 prevented.
  • the wear protection 126 is plate-shaped, with its End face 142 arranged at the free end 140 of the rotor blade 112 accordingly the course of the free end 140 of the rotor blade 112 is and in the direction of the bottom facing the container bottom of the rotor blade 112 is tapered so that the radial distance of the Face 142 of wear protection 126 with respect to the axis of rotation of the rotor 110 decreases.
  • the end face 142 of the wear protection is further bevelled so that they are parallel to the free end 140 of the rotor blade 112 runs (see FIG. 5).
  • a support element 148 is centered on the central bore 116 the back 128 of the wear protection 126 welded. With the help of the wear protection is supported in the cross-section L-shaped support element 148 126 additionally on the top 144 of the rotor blade 112, as Fig. 7 shows what the screw connections between the bolts 132 and 134 and the nuts 136 and 138 are relieved. Furthermore, there are several on the upper edge of wear protection 126 Identically designed recesses 150 with a constant distance trained to each other. With the aid of the recesses 150, the circulating movement the stock suspension in the container of the stock preparation machine be influenced. Instead of rectangular cutouts can also have cutouts in the form of triangles, polygons, Semicircles, ovals or similar designs on the top Side edge of the wear protection 126 may be formed.
  • wear protection 126 can pass through in no time at all Loosen the two nuts 136 and 138 away and replace with a new one identical or differently designed wear protection are replaced, the then again through the nuts 136 and 138 on the rotor blade 112 is attached.
  • FIG. 8 shows a fourth embodiment of a rotor 160 for use in a stock preparation machine.
  • this rotor 160 there are a total of nine identically designed rotor blades on the base body 162 164 evenly attached to the circumference of the base body 162.
  • the flat sides of rotor blades 164 are perpendicular to the axis of rotation of the rotor 160 extending plane. Every rotor blade 164 has an arcuate course with in the direction of the respective free end 166 decreasing cross section.
  • each wear protection 172 On the front surface seen in the direction of rotation 168 of the rotor 160 170 of each rotor blade 164 a wear protection 172 is attached, almost the entire front surface of the respective rotor blade 164 covered. This forms the 160 viewed in the direction of rotation 168 of the rotor leading front 174 of each wear protector 172 a right angle surface extending to the plane of rotation of the rotor 160.
  • the front 174 it is also possible to design the front 174 so that it is inclined at an angle to the plane of rotation of the rotor 160, whereby depending on the course of the front 174 during the rotation of the Rotor 160 a suction or a pressure effect on the ground or the sieve of the container of the stock preparation machine is produced. Is the front surface 174 to the bottom or sieve of the container The fabric suspension is inclined at an acute angle from the floor promoted or sucked. In contrast, the front surface 174 runs below an obtuse angle inclined to the bottom or sieve of the container, the stock suspension is pressed in the direction of the bottom or sieve.
  • the wear protection 172 has an approximately U-shaped cross section or L-shaped shape and is attached to the respective rotor blade 164, wherein a leaking nose 176 of the respective wear protection 172 in the hub area near the base body 162 freely movable in a guide (not shown) rests.
  • To attach the wear protection 172 on Rotor blade 164 is two near free end 166 of rotor blade 164 Threads running parallel to the axis of rotation of the rotor 160 (not shown) trained.
  • On the upper leg of the U-shaped wear protection 172 two holes are formed with the wear protection installed 172 to the threads formed on the rotor blade 164 are aligned. With the help of two screws 178 and 180 the wear protection 172 attached to the rotor blade 164.
  • the course corresponds wear protection 172 the arcuate course of the rotor blade 164.
  • rotor blades it is also conceivable for rotor blades to be provided on the rotor, which are S-shaped or crescent-shaped.
  • rotors have been used for paper preparation machines described that to circulate the stock suspension are only provided with rotor blades that are in one common level are arranged. It is also conceivable to use rotors to use the rotor blades arranged in different levels have, or on the base body additionally a preferably conical Screw coil is attached, the screw axis with the Rotation axis of the rotor coincides and with which the flow behavior the stock suspension in the container of the stock preparation machine can be influenced.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Pulverization Processes (AREA)

Claims (14)

  1. Rotor pour un appareil de préparation de pâte à papier, disposé dans un récipient de l'appareil de préparation de pâte à papier et présentant plusieurs pales de rotor (14 ; 74 ; 112 ; 164) pour malaxer une suspension de pâte contenue dans le récipient et pour broyer le papier contenu dans la suspension de pâte, un protecteur anti-usure (42 ; 98 ; 126 ; 172) étant fixé de manière amovible sur une surface avant (20 ; 86 ; 170) de chaque pale de rotor (14 ; 74 ; 112 ; 164), motrice dans la direction de rotation (18 ; 82 ; 168) du rotor (10 ; 70 ; 110 ; 160),
       caractérisé en ce que le protecteur anti-usure (42 ; 98 ; 126 ; 172) fixé sur la pale du rotor (14 ; 74 ; 112 ; 164) est au moins partiellement saillant avec ses arêtes latérales au-delà d'un contour délimitant la surface avant (20 ; 86 ; 168) de la pale du rotor (14 ; 74 ; 112 ; 164).
  2. Rotor selon la revendication 1,
       caractérisé en ce qu'au moins une section partielle, commençant à l'extrémité libre (30 ; 80 ; 140 ; 166) de la pale du rotor (14 ; 74 ; 112 ; 164), de la surface avant (20 ; 86 ; 168) de chaque pale de rotor (14 ; 74 ; 112 ; 164) est entièrement recouverte par le protecteur anti-usure (42 ; 98 ; 126 ; 172).
  3. Rotor selon la revendication 1 ou 2,
       caractérisé en ce que le protecteur anti-usure (42 ; 98 ; 126 ; 172) fixé sur la pale du rotor (14 ; 74 ; 112 ; 164) est saillant, avec sa face frontale, de l'extrémité libre (30 ; 80 ; 166) de la pale du rotor (14 ; 74 ; 112 ; 164), en direction radiale par rapport à l'axe de rotation du rotor (10 ; 70 ; 110 ; 160).
  4. Rotor selon la revendication 3,
       caractérisé en ce qu'une face frontale du protecteur anti-usure (42 ; 98 ; 126 ; 172), saillant de l'extrémité libre (30 ; 80 ; 140 ; 166) de chaque pale du rotor (14 ; 74 ; 112 ; 164), court en biseau en direction de la face inférieure de la pale du rotor (14 ; 74 ; 112 ; 164), tournée vers le fond du récipient, de sorte que la distance radiale entre la face frontale et l'axe de rotation du rotor (10 ; 70 ; 110 ; 160) diminue.
  5. Rotor selon l'une des revendications 1 à 4,
       caractérisé en ce que, pour fixer le protecteur anti-usure (42 ; 98 ; 126) sur chaque pale du rotor (14 ; 74 ; 112), au moins un boulon fileté (50 ; 52 ; 54 ; 106 ; 132 ; 134) est situé à une certaine distance de la face arrière du protecteur anti-usure (42 ; 98 ; 126), contiguë à la surface avant (20 ; 86) de la pale du rotor (14 ; 74 ; 112), ledit boulon étant saillant à travers une ouverture (24, 26, 28 ; 92 ; 114, 116) formée dans la pale de rotor (14 ; 74 ; 112) et vissé sur une surface arrière (22 ; 84 ; 120) de la pale de rotor (14 ; 74 ; 112), opposée à la surface avant (20 ; 86), à l'aide d'un écrou (56, 58, 60 ; 108 ; 136 ; 138) autobloquant de préférence.
  6. Protecteur anti-usure pour protéger une pale de rotor sur un rotor (10 ; 70 ; 110 ; 160) disposé dans un récipient d'un appareil de préparation de pâte à papier, dont les pales (14 ; 74 ; 112 ; 164) servent à malaxer une suspension de pâte contenue dans le récipient et à broyer le papier contenu dans la suspension de pâte, le protecteur anti-usure (42 ; 98 ; 126 ; 172) étant fixé de manière amovible sur une surface avant (20 ; 86 ; 170) de la pale de rotor à protéger (14 ; 74 ; 112 ; 164), motrice dans la direction de rotation (18 ; 82 ; 168) du rotor (10 ; 70 ; 110 ; 160),
       caractérisé en ce que le protecteur anti-usure (42 ; 98 ; 126 ; 172) est dimensionné de manière à être en position fixée sur la pale du rotor (14 ; 74 ; 112 ; 164), au moins partiellement saillant avec ses arêtes latérales au-delà d'un contour délimitant la surface avant (20 ; 86 ; 170) de la pale du rotor (14 ; 74 ; 112 ; 164).
  7. Protecteur anti-usure selon la revendication 6,
       caractérisé en ce que, pour la fixation amovible, au moins un boulon fileté (50 ; 52 ; 54 ; 106 ; 132 ; 134) est situé à une certaine distance d'une face arrière (48, 100 ; 128) du protecteur anti-usure (42 ; 98 ; 126), tourné vers la surface avant (20 ; 86) de la pale du rotor (14 ; 74 ; 112), ledit boulon étant susceptible d'être vissé sur la pale du rotor (14 ; 74 ; 112) à l'aide d'un écrou (56, 58, 60 ; 108 ; 136 ; 138) autobloquant de préférence.
  8. Protecteur anti-usure selon la revendication 6 ou 7,
       caractérisé en ce qu'au moins une broche de centrage (102, 104 ; 130) est située à une certaine distance d'une face arrière (100 ; 128) du protecteur anti-usure (98 ; 126), tournée vers la surface avant (86) de la pale du rotor (74 ; 112), ou de la surface avant (86) de la pale de rotor (74 ; 112), ladite broche étant amovible d'un trou (88, 90 ; 118) formé sur la pale de rotor (74 ; 112) ou sur le protecteur anti-usure (98 ; 126).
  9. Protecteur anti-usure selon la revendication 6, 7 ou 8,
       caractérisé en ce qu'une face avant (44) du protecteur anti-usure (42) opposée à la surface avant (20) de la pale du rotor (14) présente un rebord convexe (46) qui rentre dans des arêtes formant le contour de la face avant (44).
  10. Protecteur anti-usure selon l'une des revendications 6 à 9,
       caractérisé en ce que le contour d'une face avant (44) du protecteur anti-usure (42), opposée à la surface avant (20) de la pale du rotor (14) est doté au moins partiellement d'un chanfrein.
  11. Protecteur anti-usure selon l'une des revendications 6 à 10,
       caractérisé en ce qu'au moins une des arêtes latérales du protecteur anti-usure (126) présente plusieurs évidements (150) pour influencer le mouvement de malaxage de la suspension de pâte.
  12. Protecteur anti-usure selon l'une des revendications 6 à 11,
       caractérisé en ce qu'au moins un élément d'appui (148) est situé à une certaine distance d'une face arrière (128) du protecteur anti-usure (126), tourné vers la surface avant de la pale du rotor (112), ledit élément s'appuyant sur une face supérieure (144) de la pale du rotor (112), opposée au fond du récipient, quand le protecteur anti-usure est monté.
  13. Protecteur anti-usure selon l'une des revendications 6 à 12,
       caractérisé en ce que la face avant du protecteur anti-usure (42 ; 98 ; 126 ; 172) court, en position montée, en un angle incliné par rapport au fond du récipient de l'appareil de préparation de pâte à papier.
  14. Protecteur anti-usure selon l'une des revendications 6 à 13,
       caractérisée en ce que le protecteur anti-usure (42 ; 98 ; 126 ; 172) est formé à partir d'un matériau résistant à l'usure, de préférence un acier inoxydable allié.
EP19990104475 1999-03-05 1999-03-05 Rotor avec protecteur anti-usure pour un pulpeur Expired - Lifetime EP1036877B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59901791T DE59901791D1 (de) 1999-03-05 1999-03-05 Rotor mit einem Verschleiss-Schutz für einen Stoffauflöser
EP19990104475 EP1036877B1 (fr) 1999-03-05 1999-03-05 Rotor avec protecteur anti-usure pour un pulpeur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19990104475 EP1036877B1 (fr) 1999-03-05 1999-03-05 Rotor avec protecteur anti-usure pour un pulpeur

Publications (2)

Publication Number Publication Date
EP1036877A1 EP1036877A1 (fr) 2000-09-20
EP1036877B1 true EP1036877B1 (fr) 2002-06-19

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EP19990104475 Expired - Lifetime EP1036877B1 (fr) 1999-03-05 1999-03-05 Rotor avec protecteur anti-usure pour un pulpeur

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DE (1) DE59901791D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD607023S1 (en) 2008-03-18 2009-12-29 Voith Patent Gmbh Pulper blade wear shoe

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
EP1594597A4 (fr) * 2003-01-16 2007-03-07 Kadant Black Clawson Inc Rotor triturateur ameliore, et ensemble
DE102009012236A1 (de) 2009-03-07 2010-09-09 Voith Patent Gmbh Rotorverschleißschutz
DE102011082976A1 (de) 2011-09-19 2013-03-21 Günter Betz Vorrichtung zum Aufschlagen (zerkleinern, zerfasern, auflösen, aufbereiten) von Altpapieren und Zellstoffen in einem Pulper (Stofflöser)
CN111424450B (zh) * 2020-04-10 2022-06-17 郑州磊展科技造纸机械有限公司 一种带筛板的高浓水力碎浆机
CN112958237B (zh) * 2021-01-29 2022-06-07 福建省明辉机械制造有限公司 一种装配式木浆粉碎机
FI20245532A1 (en) * 2024-04-29 2025-10-30 Valmet Technologies Oy Pulper rotor

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Publication number Priority date Publication date Assignee Title
GB191405018A (en) * 1914-02-26 1914-09-17 Robert Joseph Marx Improvements applicable to Pulping Engines and the like.
FI78934C (fi) * 1988-02-10 1989-10-10 Sunds Defibrator Jylha Oy Anordning foer destruktion av papper, kartong eller dylika.
BE1010118A3 (fr) * 1996-04-05 1998-01-06 Magotteaux Int Helice de malaxeur.
SE509293C2 (sv) * 1997-04-29 1999-01-11 Cellwood Machinery Ab Anordning vid massaupplösare

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD607023S1 (en) 2008-03-18 2009-12-29 Voith Patent Gmbh Pulper blade wear shoe

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DE59901791D1 (de) 2002-07-25

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