EP1088193A1 - A drier for grain and granular materials in general - Google Patents
A drier for grain and granular materials in generalInfo
- Publication number
- EP1088193A1 EP1088193A1 EP99929143A EP99929143A EP1088193A1 EP 1088193 A1 EP1088193 A1 EP 1088193A1 EP 99929143 A EP99929143 A EP 99929143A EP 99929143 A EP99929143 A EP 99929143A EP 1088193 A1 EP1088193 A1 EP 1088193A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conveyor means
- chamber
- screw conveyor
- vertical
- horizontal
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
- F26B9/08—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers including agitating devices, e.g. pneumatic recirculation arrangements
- F26B9/082—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers including agitating devices, e.g. pneumatic recirculation arrangements mechanically agitating or recirculating the material being dried
- F26B9/087—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers including agitating devices, e.g. pneumatic recirculation arrangements mechanically agitating or recirculating the material being dried the recirculation path being positioned outside the drying enclosure
Definitions
- a screw conveyor is disposed along the central vertical axis of the drying chamber into which the bulk grain is loaded.
- the moist material is picked up from the base by the screw conveyor and is carried to the top of the screw, so that the material is caused to circulate inside the drying chamber in order to bring about movements of material which accelerate the drying process and render it uniform.
- Screw conveyors disposed vertically inside the cylindrical drying chamber have some disadvantages, one of which is connected with their bulk which limits the useful volume of the drying chamber.
- the object of the present invention is to provide an improved, high-performance drier which can make maximum use of the volume of its drying chamber. This object is achieved, according to the present invention by a drier having the characteristics set forth in
- Figure 1 is a partially-sectioned, side elevational view of a drier according to the present invention
- Figure 2 is a partially-sectioned, perspective view of a detail of the drier of Figure 1. Best mode of carrying out the invention
- the drier 1 comprises a drying chamber, generally indicated 10, which is composed of a cylindrical, main, upper portion 10a and a frustoconical, hopper-like lower portion 10b which terminates in an output opening 11 closable by a horizontal sliding shutter plate 11a.
- the chamber 10 is mounted on wheels 12 so that the drier is mobile and can be transported to the vicinity of the harvesting location where drying is performed. Beneath the output opening 11, and hence outside the chamber 10, there is a horizontal screw conveyor, generally indicated 14.
- the horizontal conveyor 14 comprises an internal screw in which it is possible to distinguish a first, central portion 14a oriented so as to transport the material coming from the output opening 11 in a radially outward direction (as indicated by the arrow A) towards the periphery of the chamber, where the screw conveyor 14 is coupled to a vertical screw conveyor 15.
- the vertical conveyor 15 extends parallel to the central vertical axis X of the chamber and extends vertically from the base of the chamber to a point situated above the top of the chamber 10. At the top of the vertical screw conveyor 15 there is an inclined outlet duct 19 along which the material which comes out of the vertical conveyor 15 can fall into the chamber 10 or to the exterior during the discharge (emptying) of the drier.
- the horizontal screw conveyor 14 is extended externally and radially beyond the point of coupling with the vertical conveyor 15, forming a second portion or outer appendage 14b; in this second portion, the spirals of the screw 14 are oriented in opposition to those of the first, central portion, that is, so as to transport material from the exterior towards the point of coupling with the vertical screw conveyor (as indicated by the arrow B in Figure 1) .
- a heating unit is also provided for producing hot air and admitting it to the drying chamber to promote evaporation of the moisture contained in the grain.
- the drier according to the present invention operates as follows .
- the moist material is loaded onto the loading conveyor 17 where it reaches the end 17a and falls by gravity into the outer appendage 14b of the horizontal screw.
- a box-like container 22 surrounds the end 17a laterally in order to direct the moist grain into the appendage 14b, preventing it from being dispersed.
- the forced supply by means of the vertical screw 15 prevents stagnation or partial rejection of the grain during the initial drying stage (moist grain) and a consequent reduction in the recirculation rate.
- the mixing and recirculation cycle then continues normally by means of the vertical conveyor 15, the upper outlet duct 19, the drying chamber 10, and the portion 14a of the horizontal screw conveyor .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
- Cereal-Derived Products (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9930636T SI1088193T1 (en) | 1998-06-18 | 1999-06-04 | A drier for grain and granular materials in general |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITPD980154 | 1998-06-18 | ||
IT98PD000154A ITPD980154A1 (en) | 1998-06-18 | 1998-06-18 | DRYER FOR CEREALS AND GRANULAR MATERIALS IN GENERAL. |
PCT/EP1999/003887 WO1999066276A1 (en) | 1998-06-18 | 1999-06-04 | A drier for grain and granular materials in general |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1088193A1 true EP1088193A1 (en) | 2001-04-04 |
EP1088193B1 EP1088193B1 (en) | 2004-05-26 |
Family
ID=11392256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99929143A Expired - Lifetime EP1088193B1 (en) | 1998-06-18 | 1999-06-04 | A drier for grain and granular materials in general |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1088193B1 (en) |
AT (1) | ATE267992T1 (en) |
AU (1) | AU4605899A (en) |
DE (1) | DE69917637D1 (en) |
ES (1) | ES2221392T3 (en) |
IT (1) | ITPD980154A1 (en) |
PL (1) | PL192884B1 (en) |
WO (1) | WO1999066276A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004144313A (en) * | 2002-10-21 | 2004-05-20 | Matsui Mfg Co | Drying device for powder/grain material |
TWI447543B (en) * | 2011-09-06 | 2014-08-01 | Mpi Corp | Grain picker with multi - take - and - letting structure and its alignment method |
CN112797762A (en) * | 2021-01-11 | 2021-05-14 | 重庆裕丰米业有限公司 | Corn drying device |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2451462A (en) * | 1944-04-21 | 1948-10-19 | Yglesias-Paz Adolfo Raul | Drying apparatus for coffee beans or the like, comprising a movable agitator and gas circulating means |
US3000107A (en) * | 1959-02-20 | 1961-09-19 | Edmund C Ryan | Agricultural machine for transporting, drying and mixing granular material |
US3040443A (en) * | 1959-06-10 | 1962-06-26 | Deere & Co | Crop dryer |
US3557979A (en) * | 1968-11-20 | 1971-01-26 | Warren Gene Zortman | Grain drying bin |
US3889388A (en) * | 1970-07-17 | 1975-06-17 | Takeda Chemical Industries Ltd | Method of and device for drying small solids |
US3766664A (en) * | 1972-08-08 | 1973-10-23 | K Burgin | Grain circulating system |
FR2289860A1 (en) * | 1974-10-29 | 1976-05-28 | Secemia | Drying vegetable grains circulating in system - by alternately applying hot gas in short widely spaced periods |
US4065891A (en) * | 1976-03-02 | 1978-01-03 | Burgin Kermit H | Rotary floor grain bin |
DE2967557D1 (en) * | 1979-03-07 | 1986-02-06 | Per Ake Nilsson | Apparatus for drying manure and similar residual products |
FR2501352A1 (en) * | 1981-03-06 | 1982-09-10 | Bellot Gilbert | Mobile cereal crop dryer recycling grain through hot air - is mounted on wheeled chassis and driven from tractor power take off |
-
1998
- 1998-06-18 IT IT98PD000154A patent/ITPD980154A1/en unknown
-
1999
- 1999-06-04 AU AU46058/99A patent/AU4605899A/en not_active Abandoned
- 1999-06-04 DE DE69917637T patent/DE69917637D1/en not_active Expired - Fee Related
- 1999-06-04 EP EP99929143A patent/EP1088193B1/en not_active Expired - Lifetime
- 1999-06-04 PL PL344995A patent/PL192884B1/en not_active IP Right Cessation
- 1999-06-04 ES ES99929143T patent/ES2221392T3/en not_active Expired - Lifetime
- 1999-06-04 AT AT99929143T patent/ATE267992T1/en not_active IP Right Cessation
- 1999-06-04 WO PCT/EP1999/003887 patent/WO1999066276A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9966276A1 * |
Also Published As
Publication number | Publication date |
---|---|
ITPD980154A1 (en) | 1999-12-18 |
PL192884B1 (en) | 2006-12-29 |
ES2221392T3 (en) | 2004-12-16 |
DE69917637D1 (en) | 2004-07-01 |
ATE267992T1 (en) | 2004-06-15 |
EP1088193B1 (en) | 2004-05-26 |
PL344995A1 (en) | 2001-11-19 |
WO1999066276A1 (en) | 1999-12-23 |
AU4605899A (en) | 2000-01-05 |
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