EP3705585A2 - Trockner für flexible laminare elemente und trocknungsanlage mit einer vielzahl dieser trockner - Google Patents

Trockner für flexible laminare elemente und trocknungsanlage mit einer vielzahl dieser trockner Download PDF

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Publication number
EP3705585A2
EP3705585A2 EP20159627.7A EP20159627A EP3705585A2 EP 3705585 A2 EP3705585 A2 EP 3705585A2 EP 20159627 A EP20159627 A EP 20159627A EP 3705585 A2 EP3705585 A2 EP 3705585A2
Authority
EP
European Patent Office
Prior art keywords
drying
dryer
piping
mouth
drying tunnel
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
EP20159627.7A
Other languages
English (en)
French (fr)
Other versions
EP3705585B1 (de
EP3705585A3 (de
Inventor
Gianni Maitan
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.)
GE MA TA SpA
Original Assignee
GE MA TA SpA
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Filing date
Publication date
Application filed by GE MA TA SpA filed Critical GE MA TA SpA
Publication of EP3705585A2 publication Critical patent/EP3705585A2/de
Publication of EP3705585A3 publication Critical patent/EP3705585A3/de
Application granted granted Critical
Publication of EP3705585B1 publication Critical patent/EP3705585B1/de
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/58—Drying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • 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
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B15/00—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
    • D06B15/04—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours by suction

Definitions

  • the invention relates to a dryer for flexible laminar elements, particularly adapted to dry animal hides.
  • the invention also relates to a drying plant comprising a plurality of the aforementioned dryers arranged in line one after the other.
  • the dryer and the drying plant of the invention are particularly useful in the tanneries for drying the hides after they have undergone the moist treatments and before proceeding to the subsequent processes that bring them to the state of finished product.
  • drying operations are carried out using dryers of various types which operate according to different principles.
  • vacuum dryers are known in which the hide is dried by evaporation of the water it contains in an environment in which the vacuum is created.
  • Dryers in which the hides are dried stretched on panels transiting along a tunnel and to which each hide is bound by means of grippers arranged peripherally along the perimeter edge are also known.
  • Dryers which consist of a tunnel along which the hides transit from an inlet station to an outlet station, stretched on the surface of vertical panels, are also known.
  • the hides are dried by means of air which is heated using, for example, steam batteries and is then conveyed along the drying tunnel.
  • the hot air in contact with the hides dries them, is charged with moisture and is then extracted when the moisture content it contains exceeds a predefined value.
  • dryers are known in which hot air is taken at the initial part of the tunnel located downstream of the station for the inlet of hides and is then introduced at the final part of the tunnel located upstream of the outlet station.
  • the hot air is then repeatedly recycled between the initial part and the final part of the tunnel, obtaining an improvement in thermal efficiency and significant energy savings since the caloric intake in the final part of the tunnel by the air taken in the initial part allows reducing consumption.
  • a drawback that is found in the dryers in which the aforementioned recycling of hot air takes place derives from the fact that the drying tunnel comprises a single chamber in which there is no partition between the initial part where the air is taken and the final part where the air is introduced.
  • the tunnel comprises a single chamber
  • the patent document GB 2 043 860 is also known which describes a continuous dryer comprising a plurality of chambers in which between one chamber and the adjacent chambers there are rotating shutters which direct a longitudinal flow of air along the entire row of chambers, in countercurrent to the flow of air of each chamber.
  • a first object is to provide a dryer for flexible laminar elements, in particular for animal hides, which has better thermal efficiency compared to known dryers equivalent thereto.
  • Another object is that the dryer of the invention allows a more effective and precise control of the drying temperature.
  • the dryer of the invention with respect to the known dryers, has a greater operating flexibility.
  • the dryer of the invention with respect to known dryers equivalent thereto, allows significant energy savings.
  • the dryer of the invention is represented in figures 1 to 3 in which it is indicated as a whole with 1.
  • the dryer is used for drying flexible laminar elements, preferably animal hides P, and essentially comprises a drying tunnel 2 which develops in a predominantly longitudinal direction X.
  • a transport surface 3 which develops along the drying tunnel 2 from an inlet station 4 to an outlet station 5 and on which the hides to be dried are stretched.
  • the transport surface 3 belongs to a conveyor belt 35 which is wound like a closed loop between a first cylinder 36, arranged upstream of the drying tunnel 2 and at the inlet station 4, and a second cylinder 37 which is arranged downstream of the drying tunnel 2 and at the outlet station 5.
  • the transport surface 3, instead of belonging to a conveyor belt, may belong to a plurality of belts or wires arranged parallel to each other and side by side.
  • Motorization means are associated to the first cylinder 36 or to the second cylinder 37 which set them in rotation so as to advance the transport surface 3 with the hides arranged thereon along the drying tunnel 2.
  • means 6 for circulating drying air inside the drying tunnel 2 which comprise at least one intake piping 7 and at least one delivery hood 8 communicating with the internal volume 10 of the drying tunnel 2 and are connected between them by means of at least one collector duct 9 with which means 11 for circulating air from the intake piping 7 to the delivery hood 8 are associated.
  • the circulation means 11 comprise a fan 30, having the suction mouth 31 connected to the collector duct 9 and the delivery mouth 32 connected to the delivery hood 8, which sucks the drying air through the intake pipings 7 and conveys it to the delivery hood 8.
  • heating means indicated as a whole with 12 which comprise a plurality of infrared field emission lamps 38a and 38b, commonly indicated by the term infrared lamps, which are arranged above of the transport surface 3 and are powered by an electrical circuit, not represented, connected to an external source of external current.
  • a partition wall 13 which defines a first drying chamber 14 and a second drying chamber 15 which are arranged in succession according to the direction of travel of the hides P along the drying tunnel 2 from the inlet station 4 to the outlet station 5.
  • Both intake pipings 7 communicate with the first drying chamber 14 and the delivery hood 8 communicates with the second drying chamber 15.
  • each intake piping 7 and the delivery mouth 8a of the delivery hood 8 are made in the ceiling 2a of the drying tunnel 2 so that the drying air is taken from the first drying chamber 14 and is conveyed to the second drying chamber 15.
  • the second suction chamber 15 there are two lateral extractor hoods 21 which are arranged one on one side and one on the opposite side of the transport surface 3 and each has the suction mouth 21a arranged laterally and in a lower position than the transport surface 3.
  • a suction piping 25 connects each lateral extractor hood 21 to an extractor 23 having the discharge mouth 23b connected to a discharge piping 24 which conveys the moist drying air into the external environment to said drying tunnel 2 at the end of the drying cycle.
  • the lateral extractor hoods 21 are frontally opposite to each other and the respective suction pipings 25 communicate with the extractor 23 by interposition of a suction collector 26.
  • shutter valve 27 installed in the discharge piping 24 downstream of the inlet mouth 28a of the auxiliary piping 28.
  • auxiliary piping 28 and the shutter valve 27 operate synergistically to let at least part of the drying air loaded with moisture recirculate in the second drying chamber 15 before this air is conveyed in the external environment.
  • filtering means 8b for filtering the air before it enters the second drying chamber 15 are contained in the delivery hood 8.
  • the circulation means 11, in particular the fan 30, continuously take air from the first drying chamber 14 through the intake pipings 7 and convey it to the second drying chamber 15 through the delivery hood 8 according to the direction of flow indicated by the arrows in fig. 1 .
  • the hides P receive a caloric intake from the hot air coming from the first drying chamber 14 and consequently the infrared lamps 38b contained in the second drying chamber 15 can be powered in a reduced way compared to the infrared lamps 38a present in the first drying chamber 14, with consequent energy savings and therefore a reduction in costs.
  • the caloric intake in the second drying chamber 15 is also increased by recycling the hot air therein which is sucked laterally and below the transport surface 3 by the extractor 23 by means of the lateral extractor hoods 21 connected to the suction pipings 25.
  • the flow rate of the air that is recycled is regulated by the shutter valve 27.
  • control means of the shutter valve 27 adapted to modify the opening degree to regulate the flow rate of air which is expelled as a function of the moisture it contains and according to the flow indicated by the arrows in fig. 2 .
  • the dryer of the invention is also provided with lateral extractor hoods 21 which allow a further recirculation of the drying air before the definitive discharge thereof into the environment outside the dryer.
  • the aim of reducing consumption is also achieved since the caloric intake due to the hot drying air which is taken from the first drying chamber 14 and which is introduced into the second drying chamber 15 allows reducing the electrical power supply of the infrared lamps 38b present in the second drying chamber 15 with a consequent reduction in consumption and related costs.
  • Fig. 4 shows a drying plant for flexible laminar elements, preferably animal hides, generally indicated with 100, which comprises a plurality of dryers 1 of the type that is the object of the invention just described which are arranged in line one after the other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)
EP20159627.7A 2019-03-04 2020-02-26 Trockner für flexible laminare elemente und trocknungsanlage mit einer vielzahl dieser trockner Active EP3705585B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102019000003107A IT201900003107A1 (it) 2019-03-04 2019-03-04 Essiccatoio per elementi laminari flessibili e impianto di essiccazione comprendente una pluralita’ di detti essiccatoi

Publications (3)

Publication Number Publication Date
EP3705585A2 true EP3705585A2 (de) 2020-09-09
EP3705585A3 EP3705585A3 (de) 2020-10-21
EP3705585B1 EP3705585B1 (de) 2021-10-20

Family

ID=66641375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20159627.7A Active EP3705585B1 (de) 2019-03-04 2020-02-26 Trockner für flexible laminare elemente und trocknungsanlage mit einer vielzahl dieser trockner

Country Status (3)

Country Link
EP (1) EP3705585B1 (de)
ES (1) ES2901933T3 (de)
IT (1) IT201900003107A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117308546A (zh) * 2023-10-26 2023-12-29 江苏广兴丰茂科技有限公司 一种异型钢用干燥设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2043860A (en) 1979-03-15 1980-10-08 Remonato G Remonato F Multistage Continuous Drying Apparatus, Especially for Tanned Hides

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2405813A (en) * 1944-05-06 1946-08-13 B F Sturtevant Co Drier
KR101277691B1 (ko) * 2011-07-08 2013-06-21 유지문 피혁자동도장장치의 건조기 시스템
CN104278112B (zh) * 2014-08-12 2015-12-02 王庆祝 皮革烘干除湿设备及皮革烘干除湿方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2043860A (en) 1979-03-15 1980-10-08 Remonato G Remonato F Multistage Continuous Drying Apparatus, Especially for Tanned Hides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117308546A (zh) * 2023-10-26 2023-12-29 江苏广兴丰茂科技有限公司 一种异型钢用干燥设备

Also Published As

Publication number Publication date
ES2901933T3 (es) 2022-03-24
IT201900003107A1 (it) 2020-09-04
EP3705585B1 (de) 2021-10-20
EP3705585A3 (de) 2020-10-21

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