EP0044848A1 - Process for the regulation of a pellet press - Google Patents
Process for the regulation of a pellet pressInfo
- Publication number
- EP0044848A1 EP0044848A1 EP81900311A EP81900311A EP0044848A1 EP 0044848 A1 EP0044848 A1 EP 0044848A1 EP 81900311 A EP81900311 A EP 81900311A EP 81900311 A EP81900311 A EP 81900311A EP 0044848 A1 EP0044848 A1 EP 0044848A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam
- volume
- press
- raw material
- motor load
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0005—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for briquetting presses
-
- 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
- B30B11/005—Control arrangements
-
- 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
- B30B11/207—Feed means
-
- 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 process for the regulation of the temperature of a raw material, such as a ground feedstuff conducted to a pellet press, by proportional regulation of the volume of steam admitted to the raw material and the quantity of raw material supplied to the pellet press, by which said process a volume of steam .
- a raw material such as a ground feedstuff conducted to a pellet press
- proportional regulation of the volume of steam admitted to the raw material and the quantity of raw material supplied to the pellet press by which said process a volume of steam .
- proportional to the quantity of the raw material after starting up is added, leaving the ratio mainly constant, after which the steam volume is increased proportionally to the quantity of raw material concerned.
- the motor load will, however, immediately before the gelatinization occurs, remain constant over a relatively wide range of temperature.
- the known process is thus merely achieved that the added volume of ste-am will not produce a gelatinization, but otherwise not that the steam volume is equal to optimum.
- the optimum steam volume is accordingly pursuant to the invention achieved in that the volume of steam is increased until the motor load of the press is no longer declining, after- which the temperature is retained irrespective of changing motor load, until the latter will rise drastically as a result of overloading.
- Figure 1 shows schematically a pellet press regulated by means of the procedure according to the invention
- Figure 2 shows graphically the correlation between the motor load of the pellet press and the temperature.
- a pellet press can as shown by Figure 1 consist of a feed receptacle 1, a dosage worm conveyor 2 , a cascade mixer 5, a discharge funnel 6, and a pressroom 7 incorporating not shown press rollers and a matrix. From the pipe 9 steam can via the valves 10, 11 and 12 be conveyed into the cascade mixer 5, and in the discharge funnel 5 is inserted a temperature feeler 13.
- the raw material e.g. ground feedstuff is conveyed from the feed receptacle 1 to the cascade mixer 5 by means of the dosage worm conveyor 2, the speed of which is regulated in accordance with the desired load to the motor 8 of the press. Via a pilot valve 11 steam is likewise supplied to the cascade mixer 5 in a quantity determined by the temperature in the funnel 13.
- the steam-added feedstuff mixture is via the discharge funnel passed on to the pressroom 7, in which the feed mixture is pressed into pellets.
- the volume of steam will increase until the motor load stops falling (Stage A in Figure 2) .
- the steam volume has reached an optimum, as a further reduction of the motor load can not be obtained, and a further addition of steam will run to waste.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fodder In General (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
En comprimant un materiau brut, tel qu'un materiau alimentaire moulu, en forme de comprimes, l'apport de vapeur au materiau donne lieu a une desagregation moindre des comprimes, une usure reduite de la presse et une consommation d'energie reduite. Cependant, l'apport de vapeur peut ne pas etre suffisant, de telle sorte que le materiau se colle a la presse pour le reglage automatique de l'admission de vapeur, il est propose une installation dans laquelle le volume de vapeur est augmente jusqu'a ce que la charge du moteur de la presse cesse de decroitre (point A), maintenue ainsi aussi longtemps que la charge du moteur reste sensiblement la meme (A-B), mais reduit si la charge du moteur augmente considerablement suite a une surcharge (point B).By compressing a raw material, such as a ground food material, in the form of tablets, the supply of steam to the material gives rise to a less disaggregation of the tablets, reduced wear of the press and reduced energy consumption. However, the supply of steam may not be sufficient, so that the material sticks to the press for the automatic adjustment of the steam intake, an installation is proposed in which the volume of steam is increased up to until the load of the press motor stops decreasing (point A), thus maintained as long as the motor load remains substantially the same (AB), but reduced if the motor load increases considerably following an overload (point B).
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK48080A DK48080A (en) | 1980-02-05 | 1980-02-05 | PILL PRESSURE AUTOMATIC CONTROL SYSTEM FOR PILL PRODUCTION |
DK48080/80 | 1980-02-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0044848A1 true EP0044848A1 (en) | 1982-02-03 |
Family
ID=8094021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81900311A Withdrawn EP0044848A1 (en) | 1980-02-05 | 1981-01-28 | Process for the regulation of a pellet press |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0044848A1 (en) |
DK (1) | DK48080A (en) |
WO (1) | WO1981002238A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE54606T1 (en) * | 1985-05-09 | 1990-08-15 | Buehler Ag Geb | METHOD FOR PRODUCING A PELLETED FEED, AND APPARATUS FOR CARRYING OUT THE METHOD. |
US5285681A (en) * | 1990-12-20 | 1994-02-15 | Purina Mills, Inc. | On-line pellet durability tester |
US5799572A (en) * | 1993-05-06 | 1998-09-01 | Riyate Pty Limited | Treatment of crops and fibrous materials |
AT516796B1 (en) * | 2015-02-11 | 2018-02-15 | Josef Schaider Privatstiftung | pelletizer |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL6715138A (en) * | 1967-11-08 | 1969-05-12 | ||
FR2366929A1 (en) * | 1976-10-06 | 1978-05-05 | Wetstein Leon | Press for compacting cotton waste - has hydraulic ram operating in heated compaction chamber and extrusion tube with cut=off knife |
DK140303A (en) * | 1977-11-30 |
-
1980
- 1980-02-05 DK DK48080A patent/DK48080A/en not_active Application Discontinuation
-
1981
- 1981-01-28 EP EP81900311A patent/EP0044848A1/en not_active Withdrawn
- 1981-01-28 WO PCT/DK1981/000010 patent/WO1981002238A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO8102238A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1981002238A1 (en) | 1981-08-20 |
DK48080A (en) | 1981-08-06 |
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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: 19811005 |
|
AK | Designated contracting states |
Designated state(s): AT CH DE FR GB NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19840313 |