EP0427802B1 - Appareil pour trier et depastiller des supensions fibreuses - Google Patents

Appareil pour trier et depastiller des supensions fibreuses Download PDF

Info

Publication number
EP0427802B1
EP0427802B1 EP90903349A EP90903349A EP0427802B1 EP 0427802 B1 EP0427802 B1 EP 0427802B1 EP 90903349 A EP90903349 A EP 90903349A EP 90903349 A EP90903349 A EP 90903349A EP 0427802 B1 EP0427802 B1 EP 0427802B1
Authority
EP
European Patent Office
Prior art keywords
rotor
zone
appliance
screen
sorting
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
EP90903349A
Other languages
German (de)
English (en)
Other versions
EP0427802A1 (fr
Inventor
Hagen Hutzler
Erich Czerwoniak
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 Finckh Fiber Systems GmbH and Co KG
Original Assignee
Hermann Finckh Maschinenfabrik GmbH and Co
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 Hermann Finckh Maschinenfabrik GmbH and Co filed Critical Hermann Finckh Maschinenfabrik GmbH and Co
Priority to AT90903349T priority Critical patent/ATE92554T1/de
Publication of EP0427802A1 publication Critical patent/EP0427802A1/fr
Application granted granted Critical
Publication of EP0427802B1 publication Critical patent/EP0427802B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/023—Stationary screen-drums
    • D21D5/026—Stationary screen-drums with rotating cleaning foils
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
    • D21D5/20—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in apparatus with a horizontal axis

Definitions

  • the invention relates to a device for sorting and deflaking fiber suspensions, in particular a so-called pressure-free sorter for heavily soiled fiber suspensions, such as are obtained as rejects from a wide variety of sorting systems.
  • the object of the invention was therefore to create a sorting device which is also suitable for processing heavily soiled fiber suspensions and which fulfills the requirement for a fiber-free rejects as high as possible.
  • a sorting device in which the speck content of the fiber suspension to be processed is reduced and which is said to give a rejects of relatively high dry content is known from EP-0 235 605-A2.
  • This sorting device has a housing which surrounds a rotor with a horizontal axis and has an inlet-side housing part of larger diameter and an outlet-side housing part of smaller diameter.
  • the rotor has a first rotor zone, which is designed as an impeller of relatively large diameter and is intended to deflop, while a second rotor zone located in the outlet-side housing part is designed as a cylinder of substantially smaller diameter and is surrounded by a cylindrical sieve which is surrounded by the Gutstoff and most of the water is passed to produce a relatively dry rejects.
  • a sieve plate On the side of the impeller opposite the smaller diameter outlet part of the impeller there is a sieve plate, at a very small axial distance from the impeller, against which there is an accept material space provided with an accept material outlet connects. If this known device is used for processing fiber suspensions obtained from mixed waste paper, it should be used for the last stage of the sorting process.
  • dirt particles such as sand and metal parts contained in the fiber suspension would result in rapid wear of the impeller, the sieve plate, the vanes arranged on the circumference of the second rotor zone and the cylindrical sieve surrounding the second rotor zone.
  • a device for sorting and deflaking fiber suspensions which has a housing which surrounds a rotor arranged with a lying axis and which has an inlet for the fiber suspension to be processed, in a central area in a front housing end region Area below an accept material outlet for the sorted fiber suspension and in a rear housing end area below a reject outlet.
  • the rotor has the shape of a hollow, approximately barrel-shaped, rotationally symmetrical body and has three zones lying one behind the other in the direction of the rotor axis, namely an inlet-side first rotor zone, a middle, second rotor zone and an outlet-side third rotor zone.
  • first and third rotor zones web-like accelerator strips are fastened to the rotor circumference in order to accelerate the fiber suspension in the circumferential direction, while the second rotor zone is provided on the circumference with ribs which run in the axial direction and are designed in such a way that they together with a rotor in a small radial distance comprehensive sieve cylinder develop a deflagrating effect.
  • the first rotor zone causes dewatering of the fiber suspension with simultaneous excretion of accepted material, ie the first rotor zone is A sorting and dewatering zone
  • the second rotor zone causes the fiber suspension to deflop
  • usable fibers are washed out of the rejects and sorted out, for which purpose a dilution water inlet radially from the outside onto the sieve cylinder is directed.
  • the rejects leave the device housing behind the rotor through the rejects outlet already mentioned.
  • a device for sorting and deflaking fiber suspensions which has a housing which has an inlet for the fiber suspension to be processed in a front housing end region , furthermore has an accept material outlet for the sorted fiber suspension and a rejects outlet and in which a rotor with a lying axis is rotatably mounted, which has several zones surrounded by annular spaces with different functions, one behind the other in the direction of the rotor axis, one of which has an inlet-side first rotor zone and one last one, at a rear end of the case arranged rotor area facing rotor zone are provided with entrainment elements for the fiber suspension, the last rotor zone is surrounded by an annular sieve and a deflowering rotor zone located upstream of this last rotor zone has elevations causing deflashing, with one of.
  • the object can be achieved according to the invention in that the first rotor zone is surrounded by an annular housing wall into which an outlet for specifically heavy dirt particles opens from below, and in that the last rotor zone serves as a rejecting agent thickening zone and the further rotor zone are designed as a sorting zone.
  • the first rotor zone is surrounded by the housing wall which, except for the inlet arranged above, is closed for the fiber suspension to be processed and the mouth of the heavy dirt outlet is, the specifically heavy dirt particles are centrifuged out of the fiber suspension in the device according to the invention before they can lead to wear on a sieve and the rotor parts enclosed by the sieve;
  • the fiber suspension set in rapid circulation by the rotor throws the heavy dirt particles onto the housing wall, where they slide down along this wall and get there into the outlet for the specifically heavy dirt particles.
  • a rotor arranged with an almost lying axis is surrounded over its entire length by a sieve cylinder; an inlet for the fiber suspension to be processed is provided at one end of the device housing, which is also arranged with an almost horizontal axis and is approximately cylindrical, outside the sieve cylinder there is an outlet for the accept material and at the other end of the device housing a rejects outlet is provided.
  • An inlet-side first rotor zone is provided with acceleration vanes for the fiber suspension, a second rotor zone with transport vanes conveying the fiber suspension in the axial direction and a third rotor zone with centrifugal vanes arranged on the rotor circumference.
  • the first rotor zone serves for sorting the fiber suspension, the second for washing out the fiber suspension (by means of wash water outlet openings provided in the rotor jacket), and in the third rotor zone the rejects are dewatered.
  • This known device is foreign to the genus because it is not a deflaking device. Furthermore, it does not solve the task because it has no means for removing specifically heavy dirt particles before the fiber suspension enters an annular space between a rotor and a sieve.
  • Another non-generic device in which the fiber suspension is also not defleaded, is a device for pulp sorting, which is arranged in a circular cylindrical housing arranged with a horizontal axis and concentric with the housing Has rotor.
  • the fiber suspension to be processed is introduced axially parallel into the device at one end of the housing into a chamber which is formed by the housing wall which is closed on the circumference.
  • this chamber there is a first rotor zone designed as a toothed disc, to which a second, circular cylindrical rotor zone is connected, which forms a narrow annular gap directly behind the toothed disc with a housing partition, the outside diameter of which is smaller than the outside diameter of the toothed disc.
  • Rib-like vanes extending in the axial direction are placed on the second rotor zone.
  • An inlet-side first area of the second rotor zone is surrounded by an area of the housing wall designed as a sieve, so that the fiber suspension is sorted in this area, while a second area of the second rotor zone facing away from the device inlet is surrounded by a closed area of the housing wall into which at the top a reject outlet.
  • a dilution water connection leads through the sieve.
  • the toothed disc should be designed so that undesired solid dirt particles are struck by the toothed disc and thrown back in the radial direction outwards and in the direction of the device inlet, so as to prevent the dirt particles from entering the annular gap behind the toothed disc.
  • DE-38 20 366-A it is expressly pointed out that the main part of the impurities occurring in the fiber suspension passes through the device and with it leaves the rejects. Furthermore, this known device does not have a rejects thickening zone. In summary it can be said that it is inconceivable to process fiber suspensions obtained from highly contaminated, mixed waste paper with this known device.
  • the different rotor zones do not necessarily have to be formed by one and the same rotor. There may also be another rotor zone in front of the first rotor zone, e.g. one without entrainment elements for the fiber suspension.
  • the device according to the invention is expediently designed such that all rotor zones are formed by a single drum-shaped rotor and all screens are formed by a rotationally symmetrical screen basket.
  • DE-AS 26 11 886 by the applicant has disclosed a device for sorting, deflaking and re-sorting a fiber suspension, which has a drum-shaped rotor arranged with a lying axis in a housing with a circular-cylindrical sieve. At one end of the housing there is an inlet for the fiber suspension to be processed, at the other end a rejects outlet, and in between the housing has an accept outlet at the bottom and a dilution water connection at the top, adjacent to the reject outlet.
  • the rotor is provided on its periphery in a first and a third rotor zone adjacent to the inlet or the reject outlet with strip-like driver elements for the fiber suspension running parallel to the rotor axis, and in a second one, between the
  • the first and the third rotor zone arranged rotor zone carries on its periphery a gear-like hoop, the teeth of which cause the fiber suspension to be deflashed.
  • a rotor zone designed as a fiber washing zone is provided between the sorting zone and the rejects thickening zone, which is surrounded by an annular sieve and which is assigned a wash water inlet directed against the rotor.
  • the usable fibers are washed out of the stripped fiber suspension and pass through the sieve surrounding this rotor zone as a good substance, so that the reject material leaving the device is largely fiber-free.
  • the device according to the invention is preferably a pressure-free sorting device, it is advisable to provide the rotor in the sorting zone or in the fiber washing zone on its periphery with driving elements for the fiber suspension, which push the latter against the respective sieve. If these entrainment elements are formed with sharp edges, they also result in a deflagration effect, and in the fiber washout zone they promote the distribution of the washing water and the washing out of the usable fibers from the rejects.
  • the driving elements are particularly effective if they are designed as webs or sheets projecting from the rotor circumference in a wing-like manner.
  • the deflasking effect depends essentially on the radial distance of the elevations or webs from the respective sieve from.
  • the radial distance of the webs from the respective sieve is approximately 1/2 to approximately 5 mm and preferably 1/2 to approximately 1 mm.
  • Embodiments in which the height of the webs can be adjusted to the rotor circumference are particularly advantageous.
  • the fiber suspension to be processed flows into the device housing with a certain geodetic inlet height, which is in particular 1 to 4 m WS - in an advantageous embodiment the housing inlet is for the person to be processed Fiber suspension aligned approximately tangentially and the rotor can be driven in the direction of the inlet flow, so that the inlet flow already leads to a rotational flow of the fiber suspension between the rotor and the housing wall and arrangement of the entrainment elements of the first rotor zone and of the annular space adjoining the latter between the sorting zone and the sieve surrounding it can be achieved according to the invention that specifically heavy dirt particles essentially do not come into contact with the entrainment elements of the first rotor zone and that the fiber suspension is essentially unimpeded can enter the annulus mentioned, further features by which the device according to the invention differs significantly from the known, non-generic device according to DE-38 20 366-A.
  • the different screens can have screen openings of the same size and shape. However, it is more advantageous to provide the sieve of the sorting zone with finer sieve openings than the sieve of the fiber wash-out zone, in order firstly to obtain a good material of the highest possible quality and secondly to pass all useful fibers through the sieve in the wash-out zone. Finally, when it comes to thickening the rejects, i.e. To withdraw water only from this, finer sieve openings can be used again, so that in a preferred embodiment the sieve of the rejects thickening zone has finer sieve openings than the sieve of the fiber washing zone.
  • the length of stay of the fiber suspension to be processed in the different zones of the device depends on the feed quantity per unit of time, the amount of washing or rinsing water supplied per unit of time, the inclination of the webs relative to the rotor axis and the speed of the rotor. It is therefore advisable to make the webs adjustable in their inclination relative to a surface line of the rotor circumference.
  • the webs of the last rotor zone protrude rearward over the sieve into a rejects room formed by the housing, so that the rejects into this space is thrown off the rotor.
  • FIG. 1 shows a housing mounted on a frame 10 and designated as a whole by 12, which has an outer housing jacket 14 and is closed on the left by an end wall 16 according to FIG. 1.
  • a right end wall 18 has an opening 22 concentric with an axis 20 and carries a rejects box 24, which has an outlet opening 26 for the rejects at the bottom.
  • the frame 10 also carries a drive motor 28 and a bearing body 30 in which a rotor shaft 32 is rotatably mounted. This is concentric to the device axis 20, carries a belt pulley 34 and is rotated by means of this, drive belt 36 and a belt pulley 38 of the motor 28, namely in the counterclockwise direction according to FIGS. 2 and 3.
  • a hollow, circular cylindrical rotor 40 is fastened, which is closed at its ends with end walls 42 and 44 and has a casing 46 on which a total of 4 sets of blades 50 1, 50 2, 50 3 and 50 4 are fastened, which are to be carried along , ie serve the rotational acceleration of the fiber suspension to be processed.
  • wing sets 501 to 504 are assigned to 4 zones I, II, III and IV of the device or rotor 40, namely - according to FIG. 1 from left to right - a heavy parts separation zone I, a sorting and de-stripping zone II, and a washout zone III and a dewatering zone IV.
  • adjacent wings of the wing set 50 2 of the sorting and defoliation zone II are opposed to one another because of their axial length in the axial direction offset, as can be seen in FIG. 1.
  • a tangentially oriented inlet connection 54 for the fiber suspension to be processed opens into the housing 12, and according to the invention this inlet connection is arranged at the top of the housing.
  • the rotor 40 is only encompassed by the outer housing jacket 14, into which a vertically oriented outlet connection 56 for specifically heavy dirt particles opens.
  • a heavy parts pot 58 to which a dilution water line 60 is connected. Valves closing the heavy parts pot 58 at the top and bottom are denoted by 62 and 64, and a valve for the dilution water line 60 has been denoted by 66.
  • the housing 12 receives a circular cylindrical screen cylinder 68, the screen openings of which are finer in the sorting and de-polishing zone II and in the dewatering zone IV than in the wash-out zone III.
  • 68 rinsing water channels 70 are fastened on the outside of the screen cylinder and are fed via a rinsing water line 74 provided with a valve 72.
  • the sieve cylinder 68 has no sieve openings, but only spray openings 76 at certain points, and according to the invention only in the sorting and de-polishing zone II and in the washing-out zone III, during the Drainage zone IV no rinse water is supplied.
  • a material space 78 delimited by the sieve cylinder 68 and the outer housing jacket 14 is closed according to FIG. 1 to the right of the end wall 18 and to the left by an annular housing web 80; From the bottom, an accept material outlet connection 82 opens into the accept material chamber 78.
  • the wings 504 of the rotor 40 protrude somewhat into the rejects box 24, the lower region of the rotor 40 in the rejects box 24 is assigned a half-shell-shaped guide wall 86, and at the top, adjacent to the rotor, a baffle wall 88 is arranged in the rejects box, which causes 1 that the reject thrown upwards is reflected obliquely to the right and down and thus falls down to the right from the guide wall 86 into the outlet opening 26.
  • the fiber suspension flowing into the device via the inlet connection 54 is detected by the blades 50 1 attached to the rotor in the heavy parts separation zone I and flung against the outer casing shell 14.
  • the specifically heavy dirt particles contained in the fiber suspension slide downward due to the force of gravity along the outer casing shell 14, where they are at the lowest point of the casing 12 via the outlet connection piece 56 get into the heavy parts pot 58.
  • a backwashing via the dilution water line 60 prevents the rejects from thickening in the heavy parts pot 58.
  • the fiber suspension to be processed is thus freed from specifically heavy dirt ponds, such as metal parts and the like, before it enters the annular space between the rotor 40 and the screen cylinder 68.
  • the fiber suspension is grasped by the wings 50 2 and flung against the perforated screen cylinder 68, the screen openings of which accept the accept, i.e. allow the fine fraction formed by usable fibers and water to pass through, while the dirt is retained in the annular space between the rotor and screen cylinder.
  • the accepted substance leaves the accepted substance space 78 via the accepted substance outlet connection 82.
  • the wings 502 which are designed according to the invention, specks contained in the fiber suspension, ie fiber aggregates, are dissolved; in the same way, the smallest possible distance of the wings 502 from the screen cylinder 68 has an effect, which provides a further advantage: the fibers tend to form a nonwoven fabric on the inside upstream side of the screen cylinder 68, which allows the material to flow through the screen cylinder would hinder. Due to the minor existence of Sieve cylinder 68 encircling wing 502 prevents the formation of such a nonwoven or removes an emerging nonwoven.
  • the effective height of the wings 50 2 can be set or prevented, e.g. by the washers 90 shown in FIG. 4. The same applies to the remaining wings. This can influence the intensity of the defibration work caused by the wings 50 2, which is performed between the wing edges and the edges of the screen openings by impact and shear effects.
  • the inclination of the blades relative to the device axis 20 or to the surface line of the rotor 40 can also be adjusted.
  • the fiber suspension or the dirt can be transported faster or more slowly through the annular space between rotor 40 and screen cylinder 68 to the right screen cylinder end according to FIG. 1.
  • the vanes 50 1 are preferably arranged axially, i.e. without an angular adjustment, since the axial transport of the fiber suspension in the direction of rejects box 24 is brought about by the flowing fiber suspension.
  • the sieve cylinder openings are cleaned, among other things, by the flushing water supplied via the flushing water channels 70 and the spray openings 76.
  • wash water is increasingly supplied to the reject in the washout zone III in order to wash away the useful fibers still contained in the reject from the dirt and then through the blades 503 from the annular space between the rotor and to centrifuge the screen cylinder.
  • the washing-out process is particularly intensive since the water jets entering the annular space between the screen cylinder 68 and the rotor 40 strike the rotor jacket 46, are reflected there and spray apart.
  • the washing and dilution water is well distributed by the rotating blades 503.
  • This wing 503 are mounted on the rotor at an angle corresponding to the desired residence time in the washout zone III.
  • the debris remaining in the annular space between the rotor 40 and screen cylinder 68 is now freed of the adhering water in the dewatering zone IV by centrifuging with the help of the wings 504.
  • the wings 504 are formed according to the invention over the entire length of the drainage zone IV in one piece.
  • the dewatered rejects leaves the device via the outlet opening 26 of the rejects box 24.
  • the wings are turned negative there, i.e. so that they work in the sense of a return effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

L'appareil décrit présente un rotor monté rotatif dans une cage à axe horizontal, qui comporte dans une première zone, côté admission, des éléments d'entraînement pour centrifuger des parties contaminées d'un poids spécifique élevé, est entouré en aval d'un cylindre tamiseur, et comprend également des éléments d'entraînement pour la suspension fibreuse, permettant le dépastillage et le tri dans une deuxième zone rotorique, l'élimination par lavage, avec apport d'eau, des détritus contenus dans les fibres, dans une troisième zone rotorique, et la déshydratation des détritus dans une quatrième zone.

Claims (21)

  1. Dispositif pour l'épuration et le dépastillage de suspensions fibreuses, comportant une enveloppe qui présente dans une zone d'extrémité antérieure d'enveloppe une entrée pour la suspension fibreuse à traiter, de plus une sortie de pâte à papier finie pour la suspension fibreuse épurée ainsi qu'une sortie des détritus, et dans laquelle est monté de façon à pouvoir tourner avec un arbre horizontal un rotor présentant plusieurs zones, situées l'une derrière l'autre dans la direction de l'arbre de rotor et entourées d'espaces annulaires de fonction différente, dont une première zone de rotor du côté de l'entrée et une dernière zone de rotor tournée vers la sortie des détritus agencée dans la zone d'extrémité arrière de l'enveloppe sont équipées à la périphérie d'éléments d'entraînement pour la suspension fibreuse et dont la dernière zone de rotor est entourée d'un tamis annulaire et une zone de rotor de dépastillage située en amont de cette dernière zone de rotor présente des élévations provoquant un dépastillage, une autre zone de rotor entourée d'un tamis annulaire se trouvant entre la première et la dernière zone de rotor, caractérisé en ce que la première zone de rotor (I) est entourée d'une paroi d'enveloppe (14) annulaire dans laquelle débouche au fond une sortie (56) pour des particules d'impuretés spécifiquement lourdes et en ce que la dernière zone de rotor (IV) est réalisée sous la forme d'une zone de concentration de détritus et l'autre zone de rotor (II) sous la forme d'une zone d'épuration.
  2. Dispositif suivant la revendication 1, caractérisé en ce que la paroi d'enveloppe (14) qui entoure la première zone de rotor (I) est fermée jusqu'à l'entrée (54) et jusqu'à l'orifice de la sortie (56) des impuretés lourdes.
  3. Dispositif suivant la revendication 1 ou 2, caractérisé en ce qu'entre la zone d'épuration (II) et la zone de concentration de détritus (IV) il est prévu une zone de rotor qui est réalisée sous la forme d'une zone de lavage de fibres (III), qui est entourée d'un tamis annulaire (68) et à laquelle est adjointe une entrée d'eau de lavage (76) dirigée vers le rotor (40).
  4. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que le rotor (40) est équipé dans la zone d'épuration (II), à sa périphérie, d'éléments d'entraînement (50²) pour la suspension fibreuse.
  5. Dispositif suivant la revendication 3, caractérisé en ce que le rotor (40) est équipé dans la zone de lavage de fibres (III), à sa périphérie, d'élément d'entraînement (50³) pour la suspension fibreuse.
  6. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que dans au moins une des zones de rotor (I, II, III, IV) les éléments d'entraînement (50¹, 50², 50³, 50⁴) sont réalisés sous la forme de barrettes qui s'écartent de la périphérie du rotor à la manière d'ailes.
  7. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce qu'aussi les élévations (50²) qui provoquent le dépastillage sont réalisées sous la forme de barrettes qui s'écartent de la périphérie du rotor à la manière d'ailes.
  8. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que la distance radiale des barrettes (50², 50³, 50⁴) à partir du tamis respectif (68) est comprise approximativement entre 1/2 et 5 mm.
  9. Dispositif suivant la revendication 8, caractérisé en ce que la distance radiale des barrettes (50², 50³, 50⁴) à partir du tamis respectif (68) est comprise entre approximativement 1/2 et 1 mm.
  10. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que l'entrée d'enveloppe (54) pour la suspension fibreuse à traiter est dirigée approximativement tangentiellement et le rotor peut être entraîné en rotation dans le sens de l'écoulement d'entrée et en ce que les éléments d'entraînement (50¹) de la première zone de rotor (I) ainsi que de l'espace annulaire, qui se raccorde à cette dernière, entre la zone d'épuration (II) et le tamis (68) entourant celle-ci sont agencés et réalisés de façon que des particules d'impuretés spécifiquement lourdes ne viennent pas en substance en contact avec les éléments d'entraînement (50¹) de la première zone de rotor (II) et de façon que la suspension fibreuse puisse pénétrer sensiblement librement dans l'espace annulaire cité.
  11. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que la zone de rotor de dépastillage (II) est entourée d'un tamis annulaire (68).
  12. Dispositif suivant la revendication 11, caractérisé en ce que la zone de dépastillage (II) forme aussi la zone d'épuration.
  13. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce qu'au tamis (68) de la zone d'épuration (II) sont adjointes des entrées d'eau de rinçage (76).
  14. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que le tamis (68) de la zone d'épuration (II) comporte des ouvertures de tamis plus fines que celles du tamis de la zone de lavage de fibres (III).
  15. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que le tamis (68) de la zone de concentration de détritus (IV) comporte des ouvertures de tamis plus fines que celles du tamis de la zone de lavage de fibres (III).
  16. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que les barrettes (50¹, 50², 50³, 50⁴) peuvent être réglées suivant leur hauteur par rapport à la périphérie du rotor.
  17. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que les barrettes (50¹, 50², 50³, 50⁴) peuvent être réglées quant à leur inclinaison par rapport à une ligne de surface de la périphérie du rotor.
  18. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que les barrettes (50¹) de la première zone de rotor (I) s'étendent approximativement parallèlement aux lignes de surface de la périphérie du rotor.
  19. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que les barrettes (50², 50³, 50⁴) sont inclinées dans les zones de rotor (II, III, IV), qui suivent la première zone de rotor (I), par rapport aux lignes de surface de la périphérie du rotor de façon qu'elles donnent lieu à un effet de refoulement en direction de l'extrémité arrière de l'enveloppe (24).
  20. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que les barrettes (50⁴) de la dernière zone de rotor (IV) font saillie au-delà du tamis (68) vers l'arrière dans un espace à détritus (24) formé par l'enveloppe (12).
  21. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que l'entrée (54) est agencée au-dessus dans la paroi d'enveloppe (14) qui entoure la première zone de rotor (I).
EP90903349A 1989-02-18 1990-02-07 Appareil pour trier et depastiller des supensions fibreuses Expired - Lifetime EP0427802B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90903349T ATE92554T1 (de) 1989-02-18 1990-02-07 Geraet zum sortieren und entstippen von fasersuspensionen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3904960A DE3904960A1 (de) 1989-02-18 1989-02-18 Geraet zum sortieren und entstippen von fasersuspensionen
DE3904960 1989-02-18

Publications (2)

Publication Number Publication Date
EP0427802A1 EP0427802A1 (fr) 1991-05-22
EP0427802B1 true EP0427802B1 (fr) 1993-08-04

Family

ID=6374382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90903349A Expired - Lifetime EP0427802B1 (fr) 1989-02-18 1990-02-07 Appareil pour trier et depastiller des supensions fibreuses

Country Status (4)

Country Link
EP (1) EP0427802B1 (fr)
CA (1) CA2027564A1 (fr)
DE (2) DE3904960A1 (fr)
WO (1) WO1990009480A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5096127A (en) * 1990-08-22 1992-03-17 Ingersoll-Rand Company Apparatus for pressurized screening of a fibrous material liquid suspension
DE102018122808A1 (de) * 2018-09-18 2020-03-19 Voith Patent Gmbh Steuerverfahren einer Reinigungsvorrichtung mit Schwerteil-Abscheider
CN110479740B (zh) * 2019-08-26 2021-12-28 西藏瑞华资本管理有限公司 一种采用引向收刮原理的卫生巾纤维分离设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3437204A (en) * 1965-12-27 1969-04-08 Bird Machine Co Screening apparatus
CA889156A (en) * 1969-09-19 1971-12-28 Cowan Ben Screen impeller
DE2611886C3 (de) * 1976-03-20 1981-09-03 Hermann Finckh, Maschinenfabrik GmbH & Co, 7417 Pfullingen Gerät zum Sortieren und Entstippen von Fasersuspensionen
DE2850385C2 (de) * 1978-11-21 1981-02-05 J.M. Voith Gmbh, 7920 Heidenheim Vorrichtung zum Ausscheiden von Verunreinigungen aus Faserstoffsuspensionen
ES2015545B3 (es) * 1986-02-18 1990-09-01 Voith Gmbh J M Dispositivo clasificador para suspensiones de fibras
SE458036C (sv) * 1987-07-03 1990-09-10 Kamyr Ab Apparat foer uppdelning av en suspension av fiberhaltig cellulosamassa

Also Published As

Publication number Publication date
EP0427802A1 (fr) 1991-05-22
WO1990009480A1 (fr) 1990-08-23
DE59002193D1 (de) 1993-09-09
CA2027564A1 (fr) 1990-08-19
DE3904960A1 (de) 1990-08-23

Similar Documents

Publication Publication Date Title
EP0034780B1 (fr) Dispositif de triage rotatif
EP0164428B1 (fr) Dispositif pour la réduction en pâte et le triage des vieux papiers
DE2941439C2 (fr)
AT392302B (de) Vorrichtung zum teilen einer suspension von zellulosefaserpulpe in mehrere teile
DE10060822B4 (de) Drucksortierer zum Entfernen von Störstoffen aus einer störstoffhaltigen Papierfasersuspension
AT502246B1 (de) Vorrichtung zum abscheiden von fasern aus dem spuckstoff
EP1598477B1 (fr) Tamis sous pression pour tamiser une suspension de fibres
EP0235605B1 (fr) Dispositif de tamisage pour pâte à papier
CH627952A5 (de) Vorrichtung zum trennen unerwuenschter verunreinigungen von erwuenschten fasern.
DE602004011346T2 (de) Sortierer zur Reinigung von Fasersuspensionen
DE2757175A1 (de) Vorrichtung und verfahren zum zermahlen und aufbereiten von abfallstoffen
EP0147564A1 (fr) Dispositif de triage d'une pâte de vieux papiers
EP0427802B1 (fr) Appareil pour trier et depastiller des supensions fibreuses
WO2010124911A2 (fr) Procédé de traitement d'une suspension de matière fibreuse et dispositif de tamisage permettant la mise en oeuvre dudit procédé
DE3238742A1 (de) Verfahren zum sortieren von faserstoff, insbesondere fuer die herstellung von papier sowie sortiervorrichtung zur ausfuehrung des verfahrens
DE3224705A1 (de) Verfahren zur aufbereitung von altpapier
DE4308225C1 (de) Verfahren zur Sortierung von Faserstoffsuspension sowie Siebvorrichtung zu seiner Durchführung
DE10115298A1 (de) Drucksortierer zum Entfernen von Störstoffen aus einer störstoffhaltigen Papierfasersuspension
DE3001448A1 (de) Drucksortierer
DE2208549A1 (de) Verfahren und Vorrichtung zum Reinigen und Fraktionieren von Teilchensuspensionen
EP0158827B1 (fr) Aménagement pour le traitement de vieux papier
DE19825669B4 (de) Siebapparat für eine verschmutzte Faserstoffsuspension
EP0868565B1 (fr) Appareil de preparation de suspensions de fibres destinees a la production de papier ou de carton
DE19545859C2 (de) Verfahren zur Sortierung von Faserstoffsuspensionen sowie Vorrichtung zu seiner Durchführung
EP1130156A2 (fr) Procédé pour la séparation des impuretés d' une matiere fibreuse

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19901012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19921109

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19930804

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19930804

Ref country code: DK

Effective date: 19930804

Ref country code: BE

Effective date: 19930804

Ref country code: SE

Effective date: 19930804

Ref country code: FR

Effective date: 19930804

REF Corresponds to:

Ref document number: 92554

Country of ref document: AT

Date of ref document: 19930815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59002193

Country of ref document: DE

Date of ref document: 19930909

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19931112

EN Fr: translation not filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19940228

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20050202

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20050207

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20050228

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20050324

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20050425

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060207

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060228

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060901

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060901

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060207

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20060901