EP2482017A1 - Anlage zum Trocknen von Produkten - Google Patents

Anlage zum Trocknen von Produkten Download PDF

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Publication number
EP2482017A1
EP2482017A1 EP12152906A EP12152906A EP2482017A1 EP 2482017 A1 EP2482017 A1 EP 2482017A1 EP 12152906 A EP12152906 A EP 12152906A EP 12152906 A EP12152906 A EP 12152906A EP 2482017 A1 EP2482017 A1 EP 2482017A1
Authority
EP
European Patent Office
Prior art keywords
drying
products
installation
module
dryer
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
Application number
EP12152906A
Other languages
English (en)
French (fr)
Other versions
EP2482017B1 (de
Inventor
Laurent Savary
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.)
Florette Holding SAS
Original Assignee
Florette SAS
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
Priority claimed from FR1150732A external-priority patent/FR2971045A1/fr
Application filed by Florette SAS filed Critical Florette SAS
Priority to PL12152906T priority Critical patent/PL2482017T3/pl
Publication of EP2482017A1 publication Critical patent/EP2482017A1/de
Application granted granted Critical
Publication of EP2482017B1 publication Critical patent/EP2482017B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/16—Drying solid materials or objects by processes not involving the application of heat by contact with sorbent bodies, e.g. absorbent mould; by admixture with sorbent materials
    • 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
    • F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts propelling the materials over stationary surfaces
    • F26B17/026—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts propelling the materials over stationary surfaces the material being moved in-between belts which may be perforated
    • 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
    • F26B17/28—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rollers or discs with material passing over or between them, e.g. suction drum, sieve, the axis of rotation being in fixed position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/12—Drying solid materials or objects by processes not involving the application of heat by suction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/14—Drying solid materials or objects by processes not involving the application of heat by applying pressure, e.g. wringing; by brushing; by wiping

Definitions

  • the invention relates to a drying plant on the surface of products for removing surface moisture, and in particular a plant for drying plant products, semi-finished to remove the surface moisture for the purpose of their packaging, the wet products. flowing through the facility.
  • One of the methods consists of spinning the products in a centrifugal wringer.
  • This method has the advantage of not raising the temperature of the products but the disadvantage of exerting mechanical stresses on the products, and of being feasible only in batches, that is to say discontinuously.
  • This process is not suitable for relatively fragile products because the centrifugal spin undergoes the mechanical stresses products at least partially damaging the fragile parts of the plants, which would deteriorate the appearance, the organoleptic qualities.
  • This method also has the disadvantage of heating, even slightly, the products which must then be cooled again for their conditioning and storage at a temperature generally of the order of 4 ° C and represents a waste of energy.
  • the object of the present invention is to develop an installation for removing surface moisture from flat products irregular, and fragile such as vegetable products leaving a wash, leaving their fragile structure and eliminating quickly and effectively the surface moisture.
  • the drying installation passing the products into the contact zone ensures a high flow rate while protecting the fragile products since the contact zone between the microfiber fringes of the dryer surface and the surface of the products to be dried is a contact virtually without pressure, comparable to a slight touch or touch; this contact is sufficient to absorb the surface moisture of the surface of the products.
  • the absorption is almost instantaneous in the contact zone between the microfibre fringes and the surface of the products.
  • the touch also has the advantage of allowing the fringes to come into cavities or nooks often undercut like those of the wet surface of a plant product such as a piece of salad leaf especially as the
  • the product to be dried is not necessarily flat or does not need to lie flat or lay flat, that is, pressed against the bearing surface. This operation does not involve in any case the intrinsic moisture of the product which, unheated, even weakly, nor subjected to mechanical stresses likely to promote the drying of the product, thus retains all its own moisture and therefore its freshness.
  • the bearing surface is a conveyor belt traveling at the same speed as the dryer belt in the contact zone so that the products do not undergo any friction related to a relative speed in the contact zone since the products pass through.
  • the contact zone at the same tangential velocity as that of the microfiber fringes of the dryer belt. This contact, even very short and short, nevertheless makes it possible to very effectively eliminate the surface moisture.
  • the dryer belt is a removable sleeve carried by a cylinder driven in rotation. This allows the dryer belt to be removed for processing independently of its drying by moisture extraction downstream of the contact zone.
  • the moisture extractor is a perforated cylinder, rotating in contact with the dryer belt to compress it in a compression zone at which the perforated cylinder is connected to a vacuum source for sucking moisture expressed by the dryer belt and contained therein.
  • the drying installation consists of two drying modules, twinned, reciprocally forming the support surface of the relative to each other to define between them a contact zone in which the products to be dried pass. Thanks to the very flexible and deformable structure of the dryer strips, the joining surface of the two strips is not a flat surface similar to a tangent plane but a flexible zone of a certain thickness favoring the flexible hold of the pieces of vegetables that pass. So this Twin-module installation has the advantage of drying both sides of the products simultaneously, while holding the products by simple contact in the gap between the two contact zones of each driven dryer belt.
  • the driven dryer strips of the two twin modules are sleeves mounted on cylinders driven in rotation.
  • flat products, irregular in shape, but fragile, pass in the reduced interval between the cylinders, they are held in all flexibility by microfiber fringes which, by their contact, according to the irregularity of the surfaces and absorb the surface moisture into the recesses of surface irregularities.
  • each drying module is a conveyor belt provided with a microfibre fringe web, the modules being mounted substantially parallel to one another. to the other, a lower module and an upper module above the lower module whose opposite strands define a contact zone in the form of a corridor, and a management facility managing the speed of travel of the conveyor belts, each other than the one defining the drying corridor being equipped with a moisture extractor.
  • belt conveyor drying modules make it possible to have a particularly long contact time between the microfibre fringe web and the surface of the products, which makes drying particularly effective particularly in the case of very tormented products and which can be difficult for drying by very short contact with the microfibre fringe web.
  • the drying corridor Thanks to the length of the contact zone, that is to say the drying corridor, it is easy to adapt the height of the drying corridor to the nature of the products, especially since this adjustment can be done continuous manner and that the strands facing the two conveyor belts with their microfibre fringe web are not necessarily straight but may have a certain inclination, thus modifying the profile of the drying corridor along the path of the products.
  • This variation can be continuous in the increasing or decreasing direction. It can also alternate between phases of growth and decay to promote the change of place of the microfibers relative to the surface of the products.
  • the spacing of the two modules is adjustable to define the height of the drying corridor, which height is not necessarily uniform as indicated.
  • the speed of travel of the conveyor belts is controlled by the management facility.
  • This speed of travel can be the same for both conveyor belts so that the products remain in principle motionless relative to the conveyor belts all along their path in the drying corridor.
  • the speed of the two conveyor belts is different, preferably slightly different, so that each face of the product is subjected to a force, either in the direction of the drive, or in the direction of the restraint, creating by difference a slight relative movement between one or the other or even the two microfiber fringe sheets of the drying module.
  • conveyor belt drying modules are installed in series, either one after the other, or one above the other to achieve a more gradual and gentle drying of products particularly fragile or allowing a large flow of products.
  • it is formed of a succession of elementary installations each consisting of a drying module formed by a conveyor belt equipped with a sheet of microfibre fringes, mounted substantially parallel to each other , a lower module and an upper module above the lower module delimiting with it a drying corridor, and a management facility managing the speed of travel of the conveyor belts of each drying module and a guide for drive the products from the output of a basic installation to the entrance of the next basic installation, these mounted installations in series being placed one after the other or one above the other.
  • the drying installation as defined above allows very efficient drying with simple means of realization and particularly easy maintenance for food applications such as the drying of leaves or pieces of plants.
  • the subject of the invention is a wet-surface drying plant 1, of irregular shape with cavities and asperities, of flat products, such as leaves or pieces of vegetable leaves, fragile and wet products on the surface when they come out of an upstream treatment stage such as the passage in a bath or a watering zone.
  • These products P arrive on a support surface 100 to pass into the drying module 200 of installation.
  • This drying module 200 consists of a dryer surface which, in this example, is a dryer belt 210, driven in the direction of the arrow A, to pass guide cylinders 220, 221 defining the path of the belt and on a support 222 defining with the support surface 100 opposite, a contact zone ZC of the products to be dried P.
  • the dryer strip 210 driven, is a strip lined with a sheet of microfibre fringes 212 which leave freely of the support surface 211 of the band. Downstream of the zone of contact ZC, the band 210 passes on a bearing surface formed by a rotary cylinder 213 to cooperate with a moisture extractor having a suction zone ZA, in the drying interval traversed by the dryer band 210 with microfibre fringes.
  • the belt 210 follows the circulation path through a treatment plant 260, for example an ultraviolet box or a treatment gas diffusion box to eliminate any germs remaining in the band, then the band returns to the contact zone ZC.
  • the moisture extractor 250 is constituted by a perforated cylinder 251, inside which there is a suction chamber 252 delimiting a depression sector 253 at the suction zone ZA of the perforated cylinder 251. next to the pressure roller 213 to put the holes of the perforated cylinder 251 in depression and thus suck the expressed moisture of the microfiber fringe web 212 so that the dryer belt 210 leaves this gap ZA in the dry state.
  • the figure 2 shows another drying installation 1A with a particular embodiment 200A of the drying module 200 of the figure 1 .
  • the driven dryer belt 210A is carried by a cylinder 220A rotated in the direction of arrow A.
  • the general elements already described in FIG. figure 1 are taken up in this embodiment without being represented in the figure 2 .
  • the pressure roll of the suction zone ZA with the moisture extractor 250A is here replaced by the cylinder 220A carrying the sleeve constituting the dryer belt 210A.
  • This sleeve 210A is preferably removably mounted on the cylinder 220A, which can be replaced from time to time for thorough cleaning, for treatment or to replace the sleeve whose fringes 212A are worn.
  • the bearing surface 100A is constituted by a fixed surface.
  • this fixed surface 100A may also be constituted for example by a conveyor belt so that the products to be dried P do not undergo any differential speed in their passage through the contact zone ZC with the driven dryer belt 210A since the tangential speeds will be the same. .
  • the figure 3 shows another embodiment of a product drying installation 1B.
  • This embodiment differs from the previous embodiments in that it consists of two drying modules 200A, 200B, twinned and in particular identical.
  • the bearing surface of one of the modules 200A, 200B is each constituted by the dryer belt 210A, 210B of the other module.
  • the dryer strips 210A, 210B are carried by rotationally driven cylinders 220A, 220B defining between them an interval in which the products P pass.
  • the two modules 200A, 200B are installed symmetrically with respect to a plane vertical median according to the orientation of the figure 3 .
  • the supply of products P is made from a ramp 270 which discharges the products P on the surface of the dryer belt 210A, 210B of one of the cylinders 220A, 220B or directly in the meantime.
  • the products P are smoothly taken by the fringes 212A, 212B more or less brought into relief by the rotational movement of the two cylinders 220A, 220B to pass substantially without pressure in the gap between the two cylinders, with the only contact microfibres fringes webs 212A, 212B which absorb water surface on both sides of the products P.
  • the dried products P leaving the contact area arrive on a conveyor belt 271.
  • FIG 4 another embodiment of a drying plant 1C for flat products with irregular and brittle structure such as leaves or pieces of plant leaves, wet, as for the above facilities, consists of two drying modules 300A, 300B of similar structure, with conveyor belts each provided with a sheet of microfibre fringes.
  • the conveyors are installed face to face in a horizontal or substantially horizontal position in the example shown form a drying corridor CS to receive the products (P) to be dried by transporting them.
  • the operation of the installation 1C is managed by a control unit 10 which manages the drying modules 300A, 300B, the speed of scrolling and drying V1, V2 and other parameters such as the spacing (e) two conveyors defining the interval depending on the nature of the products to be dried. It also controls the operation of the 350A, 350B moisture extractors and 360A, 360B treatment devices of the dryer belt (dryer surface) of each drying module 300A, 300B.
  • a control unit 10 which manages the drying modules 300A, 300B, the speed of scrolling and drying V1, V2 and other parameters such as the spacing (e) two conveyors defining the interval depending on the nature of the products to be dried. It also controls the operation of the 350A, 350B moisture extractors and 360A, 360B treatment devices of the dryer belt (dryer surface) of each drying module 300A, 300B.
  • the upper conveyor belt 300B may be guided and supported by a support or guide 306B for its lower strand from the sides so as to prevent the lower strand from forming an arrow and reducing the height of the CS drying corridor. relying on the products to be dried at the risk of damaging them by partially crushing them.
  • the upper conveyor belt 302B can also be stiffened by transverse bars, whose ends on each side are for example guided by non-detailed rails.
  • the conveyor belt 302B passes over two deflection rollers 303B, 304B, one of which (304B) is equipped with a motor 305B connected to the control unit 10 which controls the speed V2 of the conveyor belt 302B.
  • the return strand of the conveyor belt 302B passes into a moisture extractor 350B constituted by extractor cylinders 351B, 352B and to ensure this cooperation, the return strand is, for example, supported by a plate or other support member 307B. positioned in a suitable position with respect to the extractor rollers 351B, 352B which may have the same structure as the perforated cylinder 250 of the figure 1 .
  • Pressure rollers 311B, 312B cooperate with the extractor rolls.
  • the humidity extractor 350B is equipped with an actuator 353B for controlling a reciprocating movement W of the extractor cylinders 351B, 352B of the pressing rollers 311B, 312B and of the processing installation 360B for a faster action. and more efficient without, however, excluding the operation of the device 350B in a fixed position relative to the conveyor 301B.
  • the installation 1C is equipped with a device 11 for adjusting the height (e) of the drying corridor CS according to the nature of the products to be dried, their thickness in random position, the structure and the fragility of the products. .
  • This setting is useful for a better efficiency of drying while sparing the products to have contact as good as possible with the microfibres without damaging or crushing the products as they pass through the drying corridor.
  • the speed of travel V1, V2 of the two conveyor belts 302A, 302B is chosen according to the nature of the products to be dried.
  • the installation makes it possible to set an even running speed so that the products maintain their position relative to the two conveyor belts for their passage in the drying corridor.
  • the products (P) rub against both the lower band 302A and the upper band 302B.
  • the figure 5 shows in simplified manner an example of a drying installation 1D composed of two parts 1C, 1C 'constituted each of a drying installation according to the figure 4 , mounted one after the other in series, to dry more quickly products with tormented surfaces, retaining a lot of water in hard to reach cavities.
  • the installations 1C, 1C ' are adjustable in height relative to each other so that, depending on the nature of the products, their size and other parameters, it is possible to adjust the output height of the first installation 1C relative to the inlet of the second installation 1C '(or conversely or in combination), and that according to the fall path, statistically the flat products arrive in the inverted position on the lower conveyor inlet of the second installation 1C'.
  • the figure 6 shows very simply another embodiment of a drying installation 1E composed of two parts each formed of a 1C installation 1C 'cooperating with each other in series but arranged one almost above the other. Each of these installations corresponds to the simple installation represented in a more complete way to the figure 4 .
  • the representation of each of the facilities 1C, 1C ' is limited to the essential elements.
  • the products arrive on the lower conveyor of the upper installation 1C and then be transferred to the lower installation 1C ', either by dropping or preferably by a guide receiving the flat products at the outlet of the first installation to guide them if possible to the second installation and taking advantage of this transfer, return the flat products.
  • This reversal can also be promoted or realized by a guide 12 formed by a curved surface, covering the exit of the conveyor belt of the first part of the installation, around the exit cylinder to force products such as sheets or pieces leaves to maintain their relative position in relation to the lower conveyor, and thus arrive in the inverted position under this conveyor.
  • drying modules or the installations of the figures 1 , 4 can be combined.
  • the different facilities are as described in particular for the figure 4 , equipped with a control unit 10 managing the operation of the drying installation in combination with the other parts of a more global installation upstream and downstream.
  • the various installations or plant parts advantageously comprise an adjustment device for adjusting the interval of the drying zone as the height of the drying corridor depending on the nature of the products, their size and their fragility.
  • the present invention applies mainly to the drying of the surface water of plant products such as pieces of salad coming in particular from a washing bath.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
EP12152906.9A 2011-01-31 2012-01-27 Anlage zum Trocknen von Produkten Active EP2482017B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12152906T PL2482017T3 (pl) 2011-01-31 2012-01-27 Instalacja do suszenia produktów

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1150732A FR2971045A1 (fr) 2011-01-31 2011-01-31 Installation de sechage de produits
FR1250760A FR2971046B1 (fr) 2011-01-31 2012-01-26 Installation de sechage de produits

Publications (2)

Publication Number Publication Date
EP2482017A1 true EP2482017A1 (de) 2012-08-01
EP2482017B1 EP2482017B1 (de) 2015-03-11

Family

ID=45507622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12152906.9A Active EP2482017B1 (de) 2011-01-31 2012-01-27 Anlage zum Trocknen von Produkten

Country Status (6)

Country Link
EP (1) EP2482017B1 (de)
DK (1) DK2482017T3 (de)
ES (1) ES2538836T3 (de)
FR (1) FR2971046B1 (de)
PL (1) PL2482017T3 (de)
PT (1) PT2482017E (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114485128A (zh) * 2022-01-21 2022-05-13 徐淑英 具有环保功能的有机肥生产废料处理装置及其处理方法
CN116558274A (zh) * 2023-06-13 2023-08-08 江西宏远化工有限公司 一种硬脂酸锌橡塑助剂生产制作方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL89091C (de) * 1900-01-01
US1928993A (en) * 1932-03-16 1933-10-03 Fmc Corp Wiper mechanism for fruit driers
FR806145A (fr) * 1936-05-09 1936-12-08 Usines Tanvez Machine pour sécher les tubercules et autres racines ayant été lavés
US2124381A (en) * 1934-07-18 1938-07-19 Edwin M Wayland Means for drying fruit
FR1577464A (de) * 1967-05-31 1969-08-08
US3934354A (en) * 1973-12-17 1976-01-27 Hope Henry F Drying rollers
US4250591A (en) * 1979-07-31 1981-02-17 Mello Frank A Sponge rollers and vacuum means for removing water from vehicle in a car wash
WO2009145623A1 (en) * 2008-05-30 2009-12-03 Fico B.V. Device and method for drying separated electronic components
DE202010012094U1 (de) * 2010-09-02 2010-11-11 Allguth Gmbh Trockenelement für Autowaschstrassen

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL89091C (de) * 1900-01-01
US1928993A (en) * 1932-03-16 1933-10-03 Fmc Corp Wiper mechanism for fruit driers
US2124381A (en) * 1934-07-18 1938-07-19 Edwin M Wayland Means for drying fruit
FR806145A (fr) * 1936-05-09 1936-12-08 Usines Tanvez Machine pour sécher les tubercules et autres racines ayant été lavés
FR1577464A (de) * 1967-05-31 1969-08-08
US3934354A (en) * 1973-12-17 1976-01-27 Hope Henry F Drying rollers
US4250591A (en) * 1979-07-31 1981-02-17 Mello Frank A Sponge rollers and vacuum means for removing water from vehicle in a car wash
WO2009145623A1 (en) * 2008-05-30 2009-12-03 Fico B.V. Device and method for drying separated electronic components
DE202010012094U1 (de) * 2010-09-02 2010-11-11 Allguth Gmbh Trockenelement für Autowaschstrassen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114485128A (zh) * 2022-01-21 2022-05-13 徐淑英 具有环保功能的有机肥生产废料处理装置及其处理方法
CN116558274A (zh) * 2023-06-13 2023-08-08 江西宏远化工有限公司 一种硬脂酸锌橡塑助剂生产制作方法

Also Published As

Publication number Publication date
PL2482017T3 (pl) 2015-10-30
FR2971046A1 (fr) 2012-08-03
FR2971046B1 (fr) 2013-02-01
ES2538836T3 (es) 2015-06-24
EP2482017B1 (de) 2015-03-11
DK2482017T3 (en) 2015-06-15
PT2482017E (pt) 2015-08-31

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