EP4303513A1 - Vorrichtung zum trocknen von körnigem gut - Google Patents

Vorrichtung zum trocknen von körnigem gut Download PDF

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Publication number
EP4303513A1
EP4303513A1 EP23176283.2A EP23176283A EP4303513A1 EP 4303513 A1 EP4303513 A1 EP 4303513A1 EP 23176283 A EP23176283 A EP 23176283A EP 4303513 A1 EP4303513 A1 EP 4303513A1
Authority
EP
European Patent Office
Prior art keywords
region
dried
drying
port
dried material
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.)
Pending
Application number
EP23176283.2A
Other languages
English (en)
French (fr)
Inventor
Giuseppe Eugenio Ferrari
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.)
Ferrari Kristian
Original Assignee
Ferrari Kristian
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
Application filed by Ferrari Kristian filed Critical Ferrari Kristian
Publication of EP4303513A1 publication Critical patent/EP4303513A1/de
Pending legal-status Critical Current

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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
    • F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
    • F26B17/101—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis
    • 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
    • F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
    • F26B17/101—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis
    • F26B17/103—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis with specific material feeding arrangements, e.g. combined with disintegrating means
    • 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
    • F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
    • F26B17/101—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis
    • F26B17/104—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis with fixed or moving internal bodies for defining or changing the course of the entrained material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/001—Handling, e.g. loading or unloading arrangements
    • F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
    • 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 present invention relates to a device for drying materials in granules.
  • the device for drying is of the type used for drying cereals, seeds, farinaceous products and the like.
  • dryers that operate on a continuous cycle, in which the material in granules to be dried is loaded and the dried material in granules is progressively discharged, and dryers that operate intermittently, in which a certain quantity of material in granules is loaded in order to then be discharged all together, once dried.
  • This type of device is adapted to handling materials with superficial humidity, granular products or fluidifiable powders, and are, furthermore, very effective for toasting soya seeds, hazelnuts, almonds etc.
  • the drying air is heated using air vein burners fueled by LPG or natural gas, or with exchangers based on steam or diathermic oil.
  • Vibrating fluid bed dryers use working temperatures that are adapted to dry and sanitize and/or eliminate any contamination in the material.
  • the material to be dried is fed at one longitudinal end of a perforated conveyor belt.
  • a flow of hot air is emitted below the conveyor belt while, above the belt, an aspirator removes the humidity-rich air that passes through the conveyor belt and the material to be dried.
  • Vibrating fluid bed dryers are not devoid of drawbacks, however.
  • the energy consumption is considerable, owing to the need to use both means for sending hot air to the fluid bed, and means for extracting air from above in order to make the air pass through the granular material so as to eliminate the humidity.
  • the aim of the present invention is to provide a device for drying which is capable of improving the known art in one or more of the above-mentioned aspects.
  • an object of the invention is to make available a device for drying that makes it possible to reduce running costs.
  • Another object of the invention is to make available a device for drying that is capable of drastically, and rapidly, reducing the level of humidity of the material in granules to be dried.
  • Another object of the invention is to provide a device for drying that is highly reliable, easy to implement and low-cost.
  • the device for drying materials in granules according to the invention comprises a drying body 2 which defines internally a drying chamber 3.
  • the device for drying 1 is adapted for drying seeds, farinaceous products, shells and material intended for the food chain in general.
  • the drying chamber 3 defines, downwardly, a delivery port 4 which is connected to means for producing a flow of hot air 5.
  • the means for producing a flow of hot air 5 are configured so that, inside the drying chamber 3, a flow of hot air exits from the delivery port 4 and is directed downwardly from above and, predominantly, along a vertical direction.
  • the device for drying further comprises feeding means 6 for feeding the materials in granules to be dried into the drying chamber 3.
  • the drying chamber 3 defines, downwardly, a first region 3a arranged above the delivery port 4; above the first region 3a there is a second region 3b which has an internal chamber 10 which extends axially.
  • the internal chamber 10 communicates downwardly with the first region 3a and is designed to be crossed upwardly from below by the material being dried, by virtue of the action of the flow of hot air originating from the delivery port 4.
  • the internal chamber 10 is provided upwardly with an outlet port 11 for the dried material.
  • the second region 3b defines, outside the internal chamber 10, a discharge region 12 for the dried material which communicates with the outlet port 11 of the internal chamber 10; the discharge region 12 is provided with conveying means 13 for conveying the dried material toward at least one discharge port 14 for the dried material.
  • the device for drying 1 comprises, at the outlet port 11, at least one redirection device 20 which is adapted to redirect the dried material that exits from the outlet port 11 toward the discharge region 12.
  • the redirection device 20 comprises, for example, a first conical surface 21 with the base directed upward and with the tip arranged substantially at the outlet port 11.
  • first conical surface 21 there can be a second conical surface 22, with the base directed toward the base of the first conical surface 21.
  • adjustment means are provided along the vertical direction of the position of the redirection device 20, for adapting its position with respect to the outlet port 11 as a function of the characteristics of the material to be dried and/or of the operating parameters of the device 1.
  • the means 6 for feeding comprise a loading region 6a and a region for feeding 6b the granules to be dried into the drying chamber 3.
  • the region for feeding 6b leads, in particular, into the first region 3a of the drying chamber 3.
  • the feeding means 6 comprise a screw feeder.
  • the conveying means 13 comprise at least one chute 13a which leads into at least one discharge port 14.
  • the discharge port 14 is, in turn, conveniently connected to a discharge duct 14a which is adapted to discharge the dried material.
  • the device 1 is of the type comprising a continuous feeding of the material to be dried and a continuous discharge of the dried material.
  • drive means 13a functionally connected to the conveying means 13, which are configured to produce a vibration of the conveying means 13 so as to facilitate the discharge of the dried material toward the discharge port 14.
  • the third region 3c has an upper internal chamber 10', which extends in a radial direction correspondingly to the outside diameter of the second region 3b, and which has, upwardly, an upper outlet port 11' for the dried material that has not been unloaded by the means for conveying 13.
  • the third region 3c defines, outside the upper internal chamber 10', an upper discharge region 12' for the dried material which communicates with the upper outlet port 11' of the upper internal chamber 10'; the upper discharge region 12' is provided with upper conveying means 13' for conveying the dried material toward at least one upper discharge port 14' for the dried material.
  • the upper discharge port 14' can be connected, for example by way of an elongated body 15, to a containment body 16.
  • the device for drying 1 comprises, at the upper outlet port 11', at least one upper redirection device 20' which is adapted to redirect the dried material that exits from the upper outlet port 11' toward the upper discharge region 12'.
  • the upper redirection device 20' comprises, for example, an upper first conical surface 21' with the base directed upward and with the tip arranged substantially at the upper outlet port 11'.
  • the means for producing hot air 5 comprise, for example, a blower device 5a and means for heating 5b the flow of air sent by the blower device 5a toward the delivery port 4.
  • the means for producing hot air 5 further comprise a delivery duct 5c which connects the blower device 5a to the delivery port 6, while the means for heating 5b comprise at least one heat exchanger 5b' which is arranged along the delivery duct 5c.
  • the heat exchanger 5b' can be an electric exchanger or a gas-powered exchanger.
  • the delivery duct 5c defines a U-shaped portion 5d which is arranged below the delivery port 4.
  • the U-shaped portion 5d has an access hatch 5e which can be removed for cleaning the delivery duct 5c.
  • the operation of the device 1 for drying materials in granules, according to the invention is the following.
  • the material in granules to be dried is fed continuously, through the means for feeding 6, into the drying chamber 3, and in particular at the first region 3a arranged above the delivery port 4 connected to the means for producing a flow of hot air 5.
  • the flow of hot air in output from the delivery port 4 pushes the material in granules to be dried upward, in such a manner that the material remains suspended at the first region 3a.
  • the dried material then passes through the outlet port 11 and is brought, with the aid of the redirection device 20, to the discharge region 12 which is defined outside the internal chamber 10.
  • the dried material is then sent to the discharge port 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
EP23176283.2A 2022-07-04 2023-05-31 Vorrichtung zum trocknen von körnigem gut Pending EP4303513A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202200014086 2022-07-04

Publications (1)

Publication Number Publication Date
EP4303513A1 true EP4303513A1 (de) 2024-01-10

Family

ID=83355668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23176283.2A Pending EP4303513A1 (de) 2022-07-04 2023-05-31 Vorrichtung zum trocknen von körnigem gut

Country Status (1)

Country Link
EP (1) EP4303513A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR625648A (fr) * 1925-12-08 1927-08-16 Dispositif pour le traitement thermique de matières pulvérulentes ou finement granulées
US3544089A (en) * 1967-07-12 1970-12-01 Pierre Ledent Pneumatic elevators for lifting granular solids
CN112856935A (zh) * 2021-03-18 2021-05-28 河北皓凯农业机械有限公司 气吸式巨型智能粮食干燥机

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR625648A (fr) * 1925-12-08 1927-08-16 Dispositif pour le traitement thermique de matières pulvérulentes ou finement granulées
US3544089A (en) * 1967-07-12 1970-12-01 Pierre Ledent Pneumatic elevators for lifting granular solids
CN112856935A (zh) * 2021-03-18 2021-05-28 河北皓凯农业机械有限公司 气吸式巨型智能粮食干燥机

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