EP3302954A2 - Presse de pastillage comprenant un rouleau unique - Google Patents

Presse de pastillage comprenant un rouleau unique

Info

Publication number
EP3302954A2
EP3302954A2 EP16744888.5A EP16744888A EP3302954A2 EP 3302954 A2 EP3302954 A2 EP 3302954A2 EP 16744888 A EP16744888 A EP 16744888A EP 3302954 A2 EP3302954 A2 EP 3302954A2
Authority
EP
European Patent Office
Prior art keywords
roller
bearing
axial
shaft
pellet press
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16744888.5A
Other languages
German (de)
English (en)
Other versions
EP3302954B1 (fr
Inventor
Martinus Antonius Julius Benthum
Arnold Peter Theodoor CLEVEN
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.)
Pelleting Tech Nederland BV
Pelleting Technology Nederland BV
Original Assignee
Pelleting Tech Nederland BV
Pelleting Technology Nederland BV
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 Pelleting Tech Nederland BV, Pelleting Technology Nederland BV filed Critical Pelleting Tech Nederland BV
Priority to PL16744888T priority Critical patent/PL3302954T3/pl
Priority to RS20191105A priority patent/RS59142B1/sr
Publication of EP3302954A2 publication Critical patent/EP3302954A2/fr
Application granted granted Critical
Publication of EP3302954B1 publication Critical patent/EP3302954B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/20—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
    • B30B11/201—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring for extruding material
    • B30B11/208—Roller constructions; Mounting of the rollers

Definitions

  • Pellet press comprising a single roller
  • the invention relates to a pellet press comprising a supporting shaft with a drum rotation axis, the shaft being fixed in a frame at a shaft mounting side and having at a roller suspension side a roller shaft part, a roller being rotatably mounted around a roller axis of the roller shaft part, the roller axis being situated parallel to and at a distance from the drum rotation axis, wherein a drive member is rotatably mounted on the shaft via a first bearing near the shaft mounting side and second axial- bearing near the roller suspension side, the drive member being attached to a perforated annular drum coaxial with the drum rotation axis, for rotating the drum around this axis, an inner drum surface being situated near a roller outer surface Background of the invention
  • Such a pellet press is known from EP 238 147 and from WO 98/17464 both in the name of the applicant.
  • a kneadable compound can be extruded as pellets by rotation of one or more rollers along an internal surface of a perforated drum.
  • the known rollers or the drum rotate about the supporting shaft , and the material placed in the drum -such as for instance animal feed- is kneaded and forced through the apertures in the drum wall.
  • the rollers may be driven so that they rotate about their axis.
  • a distance between the rollers and the inside wall of the drum can be varied, to control the gap width between the internal surface of the drum and the roller by displacing the drum axis by means via a cam mechanism.
  • a shaft extends along the drum axis from outside the drum into the pelletizing space.
  • the shaft for driving the roller about the drum axis is formed by a second, hollow shaft which extends around the adjustment shaft and is mounted on bearings thereon.
  • CN 201 189 726 a pellet press is known having a single roller and two axial-radial bearings engaging the central shaft at equal radial distances
  • CN 201 220 163 discloses a pellet press using multiple rollers and having a spaced-apart axial and axial-radial bearing, situated at different radial distances around the central shaft.
  • the large forces that during operation act on the rollers are balanced. This however results in a relatively complex construction and results in a time consuming exchange and maintenance procedure.
  • Use of a single roller results in a simplified construction but results in a large concentration of forces which are accommodated by a more complex bearing structure.
  • a pellet press is characterized in that a single roller is provided wherein an outer roller diameter is larger than a radius of an inner drum surface, the first bearing being a radial bearing, the second bearing being an axial-radial bearing that is situated at a larger radial distance from the drum rotation axis than the radial bearing, each bearing comprising a bearing casing and a roller member, an axially movable locking bushing being placed around the shaft between the bearing casings of the axial and the axial-radial bearing, the bushing engaging both casings.
  • the large radial forces resulting from the use of a single roller are accommodated by the axial-radial bearing, which may be a two- row spherical bearing.
  • the axial bearing can be for instance a CARB bearing marketed by SKF in The Netherlands.
  • Axial play may be removed from both bearing casings by exerting an axial force on the rearmost bearing (seen from the side of the drum) which force is transmitted to the foremost bearing via the axially movable locking bushing, resulting in accurate positioning of the two bearings.
  • the axial-radial bearing it is preferred to utilize a tight fitting in the housing and around the shaft in order to prevent the bearing rolling into the shaft.
  • the roller is mounted on a bushing around the roller shaft part, the bushing being eccentric relative to the roller shaft part and can be fixed on the roller shaft part at different angular positions for changing the distance of the roller outer surface from the drum. Easy adjustment of the gap between the roller and the drum surface results by rotation of the eccentric bushing around the shaft end part and fixing the bushing in the desired angular position that results in an controlled gap width.
  • the large forces acting on the drum are accommodated by forming the drive member in one piece from cast iron.
  • a good load distribution on the bearings is obtained for an axial distance between the radial bearing and the axial-radial bearing that is equal to or larger than the distance between the axial-radial bearing and an axial mid position of the roller.
  • For an optimal load distribution it is desirable to locate the rollers as close as possible to the axial/radial bearing and to have a large distance between the axial and the axial/radial bearing, whereas for compactness purposes both distances should be as small as possible.
  • An optimal balance is found for the situation in which the inter-bearing distance is equal to or larger than the distance of the front bearing from the roller.
  • a product inlet is situated at the suspension side of the shaft, for easy accessibility.
  • Both the axial bearing and the axial-radial bearing may have closed casings so that lubrication is only provided during mounting and no lubrication during operation has to be carried out.
  • a roller that comprises a surface having distributed thereon a number of dimples.
  • the dimples may have the shape of a number of blind cavities, or holes and prevent a product film being formed flowing away in the gap between the roller and the drum surface.
  • Fig. 1 shows a pelleting press 1 having a supporting shaft 2 with a shaft mounting side 3 supported by a machine frame 4 that has only been schematically indicated.
  • the shaft 2 carries at a roller supporting side 7, a perforated drum 5 that is rotated around a drum rotation axis 6 via drive member 8.
  • the drive member 8 is formed in one piece of cast iron.
  • the drive member 8 is mounted on the shaft 2 via a two-row spherical bearing 9 having a casing 10 and an axial bearing 11 with a casing 13.
  • the radial distance Bl of the axial- radial bearing 9 from the drum rotation axis 6 is larger than the radial distance B2 of the axial bearing 11.
  • a bushing 12 locks both bearings 9, 11 in place and can be easily mounted around the drum rotation axis 6.
  • a roller 15 is mounted on the shaft 2 to be rotatable around the roller axis 16 that is spaced at a distance ⁇ from the drum rotation axis 6.
  • the roller 15 is driven by frictional engagement between the outer roller surface 17 and the inner drum surface 18 via the product that is squeezed in the gap between the roller and the drum.
  • the diameter D r of the roll 15 is larger than the radius R d of the drum 5.
  • a number of blind holes, cavities or “dimples” 19 is schematically shown in the outer surface 17 of the roller 15.
  • a bushing 20 is mounted on the shaft 2 and is eccentrically movable around drum rotation axis 6.
  • the roller 15 is supported via pairs of spherical bearings 22,23 on the bushing 20.
  • the angular position of the bushing 20 sets the gap width between the outer roller surface 17 and the inner drum surface 18.
  • the bushing 20 is fixed via conical clamping devices 25 that are locked front and back via two rings and two sets of bolts.
  • the distance A between the bearings 9, 11 is larger than or equal to the distance B between the bearing 9 and the center of roller 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Glanulating (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Press Drives And Press Lines (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

L'invention concerne une presse de pastillage (1) dotée d'un arbre de support (2) et d'un tambour perforé monté rotatif sur ce dernier par l'intermédiaire d'un élément d'entraînement (8) ayant deux paliers espacés (9, 11). Un rouleau unique (15) est prévu sur l'arbre à l'intérieur du tambour. Le premier palier (11) de l'élément d'entraînement (8) est un palier radial, le second palier (9) de l'élément d'entraînement (8) est un palier axial-radial situé à une plus grande distance radiale Bi de l'axe de rotation de tambour (6) que le palier radial. Une douille de verrouillage axialement mobile (12) est placée autour de l'arbre (2) entre les logements de palier (10, 13) du palier axial et du palier axial-radial, la douille (12) venant en prise avec les deux logements (10, 13).
EP16744888.5A 2015-06-05 2016-05-24 Presse de pastillage comprenant un rouleau unique Active EP3302954B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL16744888T PL3302954T3 (pl) 2015-06-05 2016-05-24 Prasa do pelletu zawierająca pojedynczą rolką
RS20191105A RS59142B1 (sr) 2015-06-05 2016-05-24 Presa za pelet sa jednim valjkom

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2014925A NL2014925B1 (en) 2015-06-05 2015-06-05 Pellet press comprising a single roller.
PCT/NL2016/050369 WO2016195484A2 (fr) 2015-06-05 2016-05-24 Presse de pastillage comprenant un rouleau unique

Publications (2)

Publication Number Publication Date
EP3302954A2 true EP3302954A2 (fr) 2018-04-11
EP3302954B1 EP3302954B1 (fr) 2019-07-17

Family

ID=53762263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16744888.5A Active EP3302954B1 (fr) 2015-06-05 2016-05-24 Presse de pastillage comprenant un rouleau unique

Country Status (7)

Country Link
EP (1) EP3302954B1 (fr)
DK (1) DK3302954T3 (fr)
HU (1) HUE045648T2 (fr)
NL (1) NL2014925B1 (fr)
PL (1) PL3302954T3 (fr)
RS (1) RS59142B1 (fr)
WO (1) WO2016195484A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2023659B1 (en) 2019-08-19 2021-10-13 Pelleting Tech Nederland B V Pellet press with cooling system and method of manufacturing pellets

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL163159C (nl) * 1977-02-11 1980-08-15 Heesen T J Pers.
ATE49155T1 (de) 1986-03-18 1990-01-15 Benthum A P T Beheer Bv Verfahren zum betaetigen einer extrusionsmuehle und extrusionsmuehle zum anwenden in diesem verfahren.
NL1004319C2 (nl) 1996-10-18 1998-04-21 Pelleting Technologie Nederlan Pelleteerpers.
DE29705312U1 (de) * 1997-03-24 1997-05-28 Holz Metall Abfall Recyclingte Kollerverdichtervorrichtung
DE29705321U1 (de) 1997-03-25 1997-05-22 Frottier Jean Pierre Schienengleis mit Schallschluckmaßnahmen
CN201189726Y (zh) * 2008-04-14 2009-02-04 江苏牧羊集团有限公司 一种环模制粒机的润滑系统
CN201220163Y (zh) * 2008-07-11 2009-04-15 江苏牧羊集团有限公司 一种双环模内置式制粒机
CH707660A1 (de) * 2013-02-26 2014-08-29 Bp Recycling Systems Gmbh Pelletier- oder Granuliervorrichtung.

Also Published As

Publication number Publication date
NL2014925B1 (en) 2017-02-03
NL2014925A (en) 2016-12-12
DK3302954T3 (da) 2019-09-23
PL3302954T3 (pl) 2020-02-28
HUE045648T2 (hu) 2020-01-28
WO2016195484A3 (fr) 2017-01-12
RS59142B1 (sr) 2019-09-30
WO2016195484A2 (fr) 2016-12-08
EP3302954B1 (fr) 2019-07-17

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