EP0101196A2 - Matrize für Pelletpresse - Google Patents

Matrize für Pelletpresse Download PDF

Info

Publication number
EP0101196A2
EP0101196A2 EP83304141A EP83304141A EP0101196A2 EP 0101196 A2 EP0101196 A2 EP 0101196A2 EP 83304141 A EP83304141 A EP 83304141A EP 83304141 A EP83304141 A EP 83304141A EP 0101196 A2 EP0101196 A2 EP 0101196A2
Authority
EP
European Patent Office
Prior art keywords
die
bore
ridged
internal bore
pellet mill
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
EP83304141A
Other languages
English (en)
French (fr)
Other versions
EP0101196B1 (de
EP0101196A3 (en
Inventor
Thomas John Rowland
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.)
PELLET TECHNOLOGY (AUSTRALIA) PTY Ltd
Original Assignee
PELLET TECHNOLOGY (AUSTRALIA) PTY Ltd
Ingersoll Rand Australia Ltd
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 PELLET TECHNOLOGY (AUSTRALIA) PTY Ltd, Ingersoll Rand Australia Ltd filed Critical PELLET TECHNOLOGY (AUSTRALIA) PTY Ltd
Priority to AT83304141T priority Critical patent/ATE32677T1/de
Publication of EP0101196A2 publication Critical patent/EP0101196A2/de
Publication of EP0101196A3 publication Critical patent/EP0101196A3/en
Application granted granted Critical
Publication of EP0101196B1 publication Critical patent/EP0101196B1/de
Expired legal-status Critical Current

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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
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/221—Extrusion presses; Dies therefor extrusion dies
    • 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
    • B30B11/202—Ring constructions

Definitions

  • This invention relates to the extrusion or moldable material into pellets or cubes, and more particularly to an extrusion die for use in such connection.
  • the effective length and diameter of a die hole is a carefully selected balance between capacity and pellet quality and wear and strength of the die. A short effective length usually increases capacity and lowers power consumption, whereas a thicker die promotes solid pellet formation at the expense of power and capacity. A larger effective diameter generally promotes capacity at the expense of pellet quality.
  • pellet mill die construction comprising a die member having a multiplicity of die holes constituting extrusion passages extending between the inner and outer faces thereof, each of the die holes comprising a bore hole having a smooth internal bore extending from the inner face at least part way through the die hole, and a ridged internal bore of equal effective diameter extending from the smooth bore towards the outer face.
  • FIG. 1 the cross-section of a typical pellet mill die is shown and designated by the reference numeral 1.
  • the die has a plurality of die holes 2 which perforate the die from an inner surface 3 to an outer surface 4.
  • Each die hole is comprised of: an inlet coutersink 5, a working section 6, and a controlled relief section 7. Details of each of these sections are shown in in Figs 2 and 3.
  • compression rollers would roll across the inner surface of the die 3 compressing the material to be pelletized through the inlet of each of the die holes.
  • the countersink 5 is provided to facilitate entry of the material and to prevent high stress corners in this heavily loaded area.
  • the compaction and diameter of the pellet is controlled in the working section 6.
  • This is normally a polished section and the die is formed by a combination of friction and beat generated in the walls of the working section.
  • a relief section which has an effective diameter close to that of the working section, but because of its ribbed construction, friction is greatly reduced between the pellet and the relief section wall.
  • material filling the valleys of the ribbed section acts as an insulator to control heat and moisture loss, thus further promoting a durable pellet.
  • the valleys may also be intentionally filled with an antifriction material such as nylon, teflon, or a solid lubricant such as graphite.
  • Fig 2 shows a ribbed portion wherein the ribs are concentrically stacked.
  • Fig 3 shows a threaded ribbed portion.
  • the threads may be any conventional type, such as a square thread or a conventional SAE or Whitworth thread.
  • the ribbed construction may also be formed by an array of small dimples formed in the side wall of the relief section
  • the length of the working section is from 1/4" to 2" and the length of the relief section is from 1/4" to 1-1/2".
  • Table 1 shows comparative results for a standard die and a die according to this invention.
  • the dies were used to pellet hay in a Century 929-25 pellet mill.
  • the die thickness was 2-1/2" and the holes 5/16" diameter.
  • the holes were tapped with a 3/8" Whitworth thread for 1/2" depth from the outer face of the die.
  • sample 5 the thread was tapped in a depth of 1".

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Glanulating (AREA)
EP83304141A 1982-07-19 1983-07-15 Matrize für Pelletpresse Expired EP0101196B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83304141T ATE32677T1 (de) 1982-07-19 1983-07-15 Matrize fuer pelletpresse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPF493482 1982-07-19
AU4934/82 1982-07-19

Publications (3)

Publication Number Publication Date
EP0101196A2 true EP0101196A2 (de) 1984-02-22
EP0101196A3 EP0101196A3 (en) 1985-06-12
EP0101196B1 EP0101196B1 (de) 1988-03-02

Family

ID=3769640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83304141A Expired EP0101196B1 (de) 1982-07-19 1983-07-15 Matrize für Pelletpresse

Country Status (5)

Country Link
EP (1) EP0101196B1 (de)
JP (1) JPS5964316A (de)
AT (1) ATE32677T1 (de)
CA (1) CA1211414A (de)
DE (1) DE3375767D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112851062A (zh) * 2021-03-02 2021-05-28 郑州市格沃环保开发有限公司 一种环模及污泥造粒机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3666190D1 (en) * 1985-06-25 1989-11-23 Mazda Motor Vehicle door structure having plastic door panel

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR451305A (fr) * 1912-02-10 1913-04-16 Ladislas Penkala Perfectionnements aux filières extensibles pour presses à filières
US2958900A (en) * 1955-06-23 1960-11-08 Edgar N Meakin Pellet mill die assembly
US3391657A (en) * 1961-05-01 1968-07-09 California Pellet Mill Co Wear compensating die
US3176631A (en) * 1963-01-21 1965-04-06 Cunningham & Sons Pelleting machine having grooved pellet holes
JPS5076107U (de) * 1973-11-02 1975-07-02
GB1522102A (en) * 1977-02-23 1978-08-23 Washbourne J Production of food stuffs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112851062A (zh) * 2021-03-02 2021-05-28 郑州市格沃环保开发有限公司 一种环模及污泥造粒机

Also Published As

Publication number Publication date
JPH0365243B2 (de) 1991-10-11
EP0101196B1 (de) 1988-03-02
ATE32677T1 (de) 1988-03-15
EP0101196A3 (en) 1985-06-12
CA1211414A (en) 1986-09-16
DE3375767D1 (de) 1988-04-07
JPS5964316A (ja) 1984-04-12

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