EP0075370A1 - Procédé et dispositif pour protéger une presse à fourrage contre un coincement - Google Patents

Procédé et dispositif pour protéger une presse à fourrage contre un coincement Download PDF

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Publication number
EP0075370A1
EP0075370A1 EP82201154A EP82201154A EP0075370A1 EP 0075370 A1 EP0075370 A1 EP 0075370A1 EP 82201154 A EP82201154 A EP 82201154A EP 82201154 A EP82201154 A EP 82201154A EP 0075370 A1 EP0075370 A1 EP 0075370A1
Authority
EP
European Patent Office
Prior art keywords
door
press
die
press chamber
motor
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
EP82201154A
Other languages
German (de)
English (en)
Other versions
EP0075370B1 (fr
EP0075370B2 (fr
Inventor
Nicolaas Christiaan Treurniet
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.)
TREURNIET, NICOLAAS CHRISTIAAN
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19838097&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0075370(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of EP0075370A1 publication Critical patent/EP0075370A1/fr
Publication of EP0075370B1 publication Critical patent/EP0075370B1/fr
Application granted granted Critical
Publication of EP0075370B2 publication Critical patent/EP0075370B2/fr
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
    • B30B11/20—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
    • B30B15/281—Arrangements for preventing distortion of, or damage to, presses or parts thereof overload limiting devices

Definitions

  • the invention relates to a method and apparatus for protecting a fodder press against jamming, said press comprising a press chamber having a rotary die and a plurality of pressure rolls positioned within the die and each being rotatable about a shaft, a motor for driving the die f as well as a door disposed before, the press chamber and which is coupled to a supply opening for . raw material.
  • Such a fodder press is disclosed in Dutch patent application 281.048.
  • the raw material such as ground fodder
  • said raw material is mixed with steam.
  • the steam provides on the one end a lubricating effect during the pressing through the die and on the other end provides a sufficient binding force to the lump eventually formed from the ground fodder.
  • the supply of steam should be carefully adjusted to the nature and the quantity of the raw material in order to ensure that the pressing through the die takes place with optimally low energy consumption andanoptimally high production. If excessive steam in relation to a given quantity of raw material is supplied, the fodder in the press will obtain a gelatin form and this gelatin formation will block the press, which will increasingly load the drive motor and likewise lead to a substantially lower efficiency.
  • the invention to this effect provides a method of protecting a fodder press of the above mentioned type against jamming, in which the magnitude of the electric current flowing to the motor is measured and when a predetermined current value is exceeded a control signal is produced, while upon command of the control signal means are set in operation for opening the door positioned before the press chamber.
  • the invention likewise provides an apparatus for performing the method according to the invention, there being provided means for measuring the electric current flowing to the motor, means for supplying a control signal when a predetermined current value is exceeded and means for opening upon command of said control signal the door positioned before the press chamber.
  • Figures 1 and 2 show a fodder press comprising a housing 1 having at its front a press chamber 2 with mounted therein three pressure rolls 3, 4 and 5, each being rotatable about a stationary shaft.
  • the pressure rolls coact with the inside of a perforated annular die 6 enclosing said rolls, which die is mounted on the one end of a hollow rotatably mounted shaft 7, which at the other end carries a drive disk 8.
  • the drive disk 8 is coupled to the drive motor 9 via a belt.
  • a door 10 Before the die 6 there is attached to the housing a door 10 which is adapted for rotation about a pivot 10a.
  • the supply of raw material to the press chamber takes places via a suitable opening in the door thn»ugh a supply 11.
  • the door is provided with an extended attachment member 12 and the housing is provided with an attachment point 13 situated beside the press chamber at the exterior of the housing.
  • an air cylinder 14 which is extended upon command of a control signal and being adapted to displace the door 10 from the closed position shown in fig. 2 in full lines towards the open position shown in dotted lines.
  • air cylinder In addition to an air cylinder, naturally also other members may be used which under influence of a control signal ensure the required displacement of the door.
  • Fig. 3 diagrammatically shows an electric circuit for generating the control signal for the air cylinder 14.
  • a transducer 20 which is connected to a device 21.
  • the device 21 is adapted to produce a control signal when a predetermined adjustable current flows through the line T.
  • a device 21 may for instance be a contact ammeter having an adjustable response value, as marketed under the tradename Fotact.
  • the control signal of the device 21 is supplied to a relay 22 a contact 22a of which is incorporated in the feed line for the air cylinder 14, which is diagrammatically shown.
  • the relay 22 under influence of the control signal of the device 21 is responsive, the contact 22a is closed and the cylinder is energized in such a way that the door 10 of the press is opened.
  • the method according to the invention is performed as follows.
  • the device 21 is set in such a way that it produces a control signal when a predetermined current value is exceeded, e.g. at a value which is 20% higher than the value upon normal operation.
  • This current value is chosen in such a way that at the current value set precisely an initial gelatin formation in the press chamber 2 occurs.
  • the device 21 produces the control signal and the air cylinder 14 is energized through relay contact 22a and opens the door 10 of the press. All the raw material still present in the supply 11 and at the inside of the door falls downwardly and can no longer reach the press chamber 2.
  • the loose, raw material still present in the press chamber 2 can also fall out of the press chamber, while the raw material still present between the pressure rolls and the die is pressed through the die, so that the press therefore is completely self-cleaned without human intervention.
  • the invention is not restricted either to the type of press described in the embodiment but may- also be applied with other press types.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Fodder In General (AREA)
EP19820201154 1981-09-21 1982-09-17 Procédé et dispositif pour protéger une presse à fourrage contre un coincement Expired EP0075370B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8104343A NL8104343A (nl) 1981-09-21 1981-09-21 Vastloopbeveiliging.
NL8104343 1981-09-21

Publications (3)

Publication Number Publication Date
EP0075370A1 true EP0075370A1 (fr) 1983-03-30
EP0075370B1 EP0075370B1 (fr) 1985-02-13
EP0075370B2 EP0075370B2 (fr) 1990-01-24

Family

ID=19838097

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820201154 Expired EP0075370B2 (fr) 1981-09-21 1982-09-17 Procédé et dispositif pour protéger une presse à fourrage contre un coincement

Country Status (3)

Country Link
EP (1) EP0075370B2 (fr)
DE (1) DE3262341D1 (fr)
NL (1) NL8104343A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3711379A1 (de) * 1987-04-04 1988-10-20 Hoelter Heinz Pelletisierpresse

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3167813A (en) * 1962-09-10 1965-02-02 California Pellet Mill Co Extrusion mill and feeder means therefor
DE1211908B (de) * 1962-08-29 1966-03-03 Weserhuette Ag Eisenwerk Sicherungsvorrichtung zum UEberlastungsschutz von Zerkleinerungsmaschinen gegen im Foerdergut enthaltene Fremdkoerper
FR89484E (fr) * 1963-12-17 1967-06-30 Buehler Ag Geb
DE2013272A1 (de) * 1970-03-20 1971-10-07 Maschinenfabrik Weingarten Ag, 7987 Weingarten Verfahren und Einrichtung zur Uberwa chung des Laufbereiches einer Maschine, insbesondere einer Presse
GB1249265A (en) * 1970-03-31 1971-10-13 Fortschritt Veb K Improvements in or relating to machines for pressing bulk material through apertures in a grating

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1211908B (de) * 1962-08-29 1966-03-03 Weserhuette Ag Eisenwerk Sicherungsvorrichtung zum UEberlastungsschutz von Zerkleinerungsmaschinen gegen im Foerdergut enthaltene Fremdkoerper
US3167813A (en) * 1962-09-10 1965-02-02 California Pellet Mill Co Extrusion mill and feeder means therefor
FR89484E (fr) * 1963-12-17 1967-06-30 Buehler Ag Geb
DE2013272A1 (de) * 1970-03-20 1971-10-07 Maschinenfabrik Weingarten Ag, 7987 Weingarten Verfahren und Einrichtung zur Uberwa chung des Laufbereiches einer Maschine, insbesondere einer Presse
GB1249265A (en) * 1970-03-31 1971-10-13 Fortschritt Veb K Improvements in or relating to machines for pressing bulk material through apertures in a grating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3711379A1 (de) * 1987-04-04 1988-10-20 Hoelter Heinz Pelletisierpresse

Also Published As

Publication number Publication date
NL8104343A (nl) 1983-04-18
EP0075370B1 (fr) 1985-02-13
EP0075370B2 (fr) 1990-01-24
DE3262341D1 (en) 1985-03-28

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