Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
  • F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
  • F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
  • F26B17/122—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the material moving through a cross-flow of drying gas; the drying enclosure, e.g. shaft, consisting of substantially vertical, perforated walls
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
  • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B3/00—Drying solid materials or objects by processes involving the application of heat
  • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
  • F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B3/00—Drying solid materials or objects by processes involving the application of heat
  • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
  • F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
  • F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
  • F26B3/082—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed arrangements of devices for distributing fluidising gas, e.g. grids, nozzles
• • 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
  • F26B9/10—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in the open air; in pans or tables in rooms; Drying stacks of loose material on floors which may be covered, e.g. by a roof
  • F26B9/103—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in the open air; in pans or tables in rooms; Drying stacks of loose material on floors which may be covered, e.g. by a roof using fixed or removable drying air channels placed in the stack, e.g. horizontally or vertically
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
  • F26B2200/06—Grains, e.g. cereals, wheat, rice, corn

Definitions

• the invention disclosed in this specification pertains generally to the technology sector of grain drying equipment and relates more specifically to the cross-flow dryer sector.
• Grain drying after harvesting is a necessity to maintain moisture at appropriate levels and to prevent spoilage of stored produce.
• the continuous flow dryers are subdivided into concurrent flow dryers, countercurrent dryers, cascade dryers and crossflow dryers.
• concurrent flow dryers drying air and grains flow in the same direction.
• countercurrent dryers drying air and grains flow in opposite directions.
• cascade dryers the beans move between a multitude of inverted V-shaped rails.
• cross-flow dryers the drying air flows perpendicular to the grain flow.
• continuous cross air flow grain dryers feature a unidirectional drying cross air flow. Throughout the grain path in the drying chamber they receive unidirectionally the drying air flow, at no time during their residence time a change in the direction of air flow direction, which causes an average humidity gradient ( % bu) around eight points (comparing lower humidity to higher humidity). Moisture is measured at the dryer discharge and the gradient value may be even higher depending on the moisture in the grain at the dryer inlet.
• the present invention relates to a multidirectional cross air flow grain dryer which maintains the constructive simplicity and low cost of a cross flow dryer, but provides high performance drying without temperature gradient and high precision.
• the proposed invention comprises drying air-flow fractionating aeroducts associated with overlapping stations at their levels, which alternate right and left air flow lines, which promotes drying on a single grain flow column, intensely on its face. right and / or left direction, always alternating the direction of air flow to the same grain flow column throughout its course during its residence time.
• Figure 1 is a sectional drawing of a first embodiment of the invention.
• Figure 2 enlarged scale detail of alternating air inlets and outlets.
• FIG. 3 perspective drawing of a fractional airflow aeroduct.
• Figure 4 is a sectional drawing of a second embodiment of the invention.
• Figure 5 enlarged scale detail of the air inlets and outlets in the upper dryer stations.
• Figure 6 enlarged scale detail of air inlets and outlets in lower dryer stations.
• the present invention relates to a high precision multi-directional cross-air grain dryer without gradients consisting of a continuous dryer (1), internally provided with paths (2) for the passage of grain flow, defined between fractional aeroducts of the drying air flow, consisting of drying air inlets (3) and air outlets (4), arranged parallel to both sides of the grain passageways (2), and distributed alternately in levels so that the same grain flow column is struck alternately by right and left air flows and so on throughout its course.
• the air flow lines are composed of several overlapping air duct assemblies, so that the drying air flow is equally fractionated, so the steering will have the accuracy of air injection throughout grain flow column path through various passage stations.
• the airflow fractionating aeroducts are closed at their upper faces (5) and have air openings (6) only at the lower side faces (7), which are larger when compared to the upper faces (5). ) (as shown in figure 3).
• the lower stations (8) present the airflow fractionating air conducts displaced to the upper station grain flow column (2) axes so as to split the grain flow in two.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Microbiology (AREA)
• Drying Of Solid Materials (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=48872847

Family Applications (1)

Country Status (4)

Families Citing this family (3)

Citations (4)

Family Cites Families (1)

• 2012
  • 2012-01-26 BR BR102012001750-4A patent/BR102012001750B1/pt active IP Right Grant
• 2013
  • 2013-01-25 US US14/374,206 patent/US20150107129A1/en not_active Abandoned
  • 2013-01-25 CA CA2862518A patent/CA2862518C/en active Active
  • 2013-01-25 WO PCT/BR2013/000030 patent/WO2013110153A1/pt active Application Filing

Patent Citations (4)

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