EP0075370B2 - 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

Info

Publication number
EP0075370B2
EP0075370B2 EP19820201154 EP82201154A EP0075370B2 EP 0075370 B2 EP0075370 B2 EP 0075370B2 EP 19820201154 EP19820201154 EP 19820201154 EP 82201154 A EP82201154 A EP 82201154A EP 0075370 B2 EP0075370 B2 EP 0075370B2
Authority
EP
European Patent Office
Prior art keywords
door
press
motor
die
press chamber
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
Application number
EP19820201154
Other languages
German (de)
English (en)
Other versions
EP0075370B1 (fr
EP0075370A1 (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(B2) "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

Links

Images

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.
  • the fodder press comprising a press chamber having a rotary die and a plurality of pressure rolls positioned within the die, each being rotatable around a shaft, a motor for driving the die as well as a door positioned before the press chamber, said door being coupled to a supply opening for raw material, in which the magnitude of the electric current flowing towards the motor is measured and when a predetermined current value is exceeded a control signal is generated by which control signal means are set in operation for opening said door.
  • the door is in the form of a valve door that has been arranged-in the front face of the part of the supply duct for raw material that extends over the front end of the press chamber.
  • This valve door has a limited size and extends over only a part of the open front end of the rotary die.
  • the invention to this effect provides a method for protecting a fodder press against jamming, the fodder press comprising a press chamber having a rotary die and a plurality of pressure rolls positioned within the die, each being rotatable about a shaft, a motor for driving the die, as well as a door positioned before the press chamber, and extending over the complete area of the front end of the press chamber so as to close the latter, said door being coupled to a supply opening for raw material, in which the magnitude of the electric current flowing towards the motor is measured and when a predetermined current value is exceeded a control signal is generated by which control signal means are set in operation for opening said door.
  • the invention likewise provides an apparatus for protecting a fodder press against jamming, the fodder press comprising a press chamber having a rotary die and a plurality of pressure rolls positioned within the die, each being rotatable about a shaft, a motor for driving the die, as well as a door positioned before the press chamber, and extending over the complete area of the front end of the press chamber so as to close the latter, said door being coupled to a supply opening for raw material, means being provided for measuring the electric current flowing towards the motor, means for generating 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.
  • German Offen- legungsschrift 2,013,272 describes a method and an apparatus for comparing the momentary current flowing to the motor of a press with the current that under normal circumstances has to flow to said motor. This comparison is carried out when the motor is in an unloaded condition or when the motor carries out one specific function. When the momentary current is not equal to the current which flows under normal conditions, this is an indication that something is wrong with the motor and the motor is disconnected. In the power lines to the motor also overload fuses can be inserted, to cut off the power when the motor is in an overload condition.
  • 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 through 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. Between the free end of the attachment member 12 and the attachment point 13 there is provided an air cylinder 14 which is actuated upon command of a control signal and being adapted to displace the door 10 from the closed position 2 shown in fig. 2 in full lines towards the open position shown in dotted lines.
  • an air cylinder instead of an air cylinder other members may be used which under influence of a control signal ensure the required opening 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 the current that flows through the line T exceeds an adjustable predetermined value.
  • 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 predetermined current value 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.

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)

Claims (7)

1. Un procédé pour protéger contre le coincement une presse à fourrage, cette presse à fourrage comprenant une chambre de pressage (2) pourvue d'une matrice rotative (6) et d'une pluralité de rouleaux presseurs (3, 4, 5) disposés à l'intérieur de la matrice (6), chaque rouleau pouvant tourner autour d'un axe, un moteur (9) destiné à entraîner la matrice (6), ainsi qu'une porte (10) montée devant la chambre de pressage (2) et s'étendant sur la surface entière du bout avant de la chambre de pressage pour ainsi fermer la dernière, ladite porte étant couplée à une ouverture d'alimentation (11) pour la matière première, dans laquelle la valeur du courant électrique traversant le moteur (9) est mesurée, et que, lorsqu'une valeur prédéterminée du courant est dépassée, un signal de commande est produit et met en service un moyen de commande (14) pour ouvrir ladite porte (10).
2. Un procédé conforme à la revendication 1, caractérisé en ce que le centre de la porte (10) est ouvert à une vitesse supérieure à environ 0,15 m/s.
3. Un procédé conforme à la revendication 1 ou 2, caractérisé en ce que le centre de la porte (10) est ouvert au moyen d'un cylindre pneumatique (14).
4. Un dispositif pour protéger une presse à fourrage contre le coincement, la presse à fourrage comprenant une chambre de pressage (2) pourvue d'une matrice rotative (6) et d'une pluralité de rouleaux presseurs (3, 4, 5) disposés à l'intérieur de la matrice (6) chaque rouleau pouvant pivoter autour d'un arbre, un moteur (9) pour l'entraînement de la matrice (6), ainsi qu'une porte (10) montée devant la chambre de pressage (2), et s'étendant sur la surface entière du bout avant de la chambre de pressage pour ainsi fermer la dernière, ladite porte étant accouplée à une ouverture d'alimentation (11) pour la matière première, un moyen (20) étant prévu un moyen (20) pour mesurer le courant électrique qui traverse le moteur (9) un moyen (21) pour produire un signal de commande lorsqu'une valeur prédéterminée du courant est dépassée et un moyen (14) pour ouvrir sur commande dudit signal de commande, la porte (10) montée devant la chambre de pressage (2).
5. Un dispositif conforme à la revendication 4, caractérisé en ce que le moyen destiné à ouvrir la porte comprend un cylindre pneumatique (14).
6. Un dispositif conforme à la revendication 4, caractérisé en ce que le moyen destiné à ouvrir la porte comprend deux cylindres disposés de chaque côté de la porte, chaque cylindre comprenant un arbre d'entraînement fileté et un moteur pour entraîner ledit arbre, le dispositif étant tel que la porte peut être avancée par les arbres d'entraînement à une position parallèle à la face avant de la chambre de presse mais à une certaine distance de cette dernière.
7. Un dispositif conforme à la revendication 4 ou 5, caractérisé en ce que le moyen destiné à mesurer le passage du courant à travers le moteur consiste en un ampèremètre à contacts.
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 EP0075370A1 (fr) 1983-03-30
EP0075370B1 EP0075370B1 (fr) 1985-02-13
EP0075370B2 true 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)

Families Citing this family (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

Family Cites Families (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
NL6412189A (fr) * 1963-12-17 1965-06-18
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

Also Published As

Publication number Publication date
EP0075370B1 (fr) 1985-02-13
DE3262341D1 (en) 1985-03-28
NL8104343A (nl) 1983-04-18
EP0075370A1 (fr) 1983-03-30

Similar Documents

Publication Publication Date Title
US4609155A (en) Shredding apparatus including overload protection of drive line
US4134554A (en) Grinder cylinder control for waste paper grinder
CA1103787A (fr) Systeme de commande et de regulation sur presse
US7325759B2 (en) Method for minimizing damage to a waste fragmentation machine
RU1820873C (ru) Устройство дл регулировани рабочего зазора между валками мельничных вальцовых станков
GB2040506A (en) Automatic Control for a Hulling Machine
US3773268A (en) Apparatus for and method of controlling feed of grinding media to a grinding mill
EP0075370B2 (fr) Procédé et dispositif pour protéger une presse à fourrage contre un coincement
CA2129386C (fr) Methode et dispositif de regulation pour cuiseur a cereales
EP0212629A2 (fr) Dispositif pour comprimer et solidifier des matières fibreuses de plantes
PL108922B1 (en) Mechanical miner
US3459378A (en) Load control system
JP3901455B2 (ja) 一軸破砕機
US5787694A (en) Piston operated collecting machine for agricultural harvested products
US5009551A (en) Material handling system and control valve therefor
US4295614A (en) Pneumatically operated grain handling apparatus
CA2178682A1 (fr) Dispositif de controle d'ecluse rotative de systeme de traitement de charbon
JPH0584447A (ja) 竪型粉砕機
EP1753537B1 (fr) Concasseur, son utilisation et procede permettant de concasser une matiere solide
CN208607372U (zh) 一种青贮收获机金属探测及急停保护控制系统
CN110479449A (zh) 基于压力变化率的破碎机异常进料控制方法及破碎机
JPH06182598A (ja) ２ 軸 型 ダ ブ ル ロ ー ル 式 成 型 機
CN215783900U (zh) 一种剪切式破碎机
CA1253123A (fr) Appareil de dechiquetage a courroie d'entrainement protegee contre les surcharges
JP2654734B2 (ja) 金属切屑減容機

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

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL

17P Request for examination filed

Effective date: 19830504

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL

REF Corresponds to:

Ref document number: 3262341

Country of ref document: DE

Date of ref document: 19850328

ET Fr: translation filed
RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: TREURNIET, NICOLAAS CHRISTIAAN

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

BECN Be: change of holder's name

Effective date: 19850213

26 Opposition filed

Opponent name: GEBRUEDER BUEHLER AG

Effective date: 19851026

NLR1 Nl: opposition has been filed with the epo

Opponent name: GEBRUEDER BUEHLER AG

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

R26 Opposition filed (corrected)

Opponent name: GEBRUEDER BUEHLER AG

Effective date: 19851026

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

Ref country code: NL

Payment date: 19890930

Year of fee payment: 8

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

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

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 19900124

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): BE DE FR GB IT NL

NLR2 Nl: decision of opposition
ITF It: translation for a ep patent filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19900329

Year of fee payment: 8

Ref country code: BE

Payment date: 19900329

Year of fee payment: 8

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

Ref country code: FR

Payment date: 19900330

Year of fee payment: 8

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

Ref country code: GB

Payment date: 19900331

Year of fee payment: 8

ET3 Fr: translation filed ** decision concerning opposition
NLR3 Nl: receipt of modified translations in the netherlands language after an opposition procedure
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19900917

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19900930

BERE Be: lapsed

Owner name: TREURNIET NICOLAAS CHRISTIAAN

Effective date: 19900930

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

Ref country code: NL

Effective date: 19910401

GBPC Gb: european patent ceased through non-payment of renewal fee
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19910530

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

Ref country code: DE

Effective date: 19910601

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST