EP4399466A1 - Séchoir doté d'une installation de transport destinée à transporter des plaques à sécher - Google Patents

Séchoir doté d'une installation de transport destinée à transporter des plaques à sécher

Info

Publication number
EP4399466A1
EP4399466A1 EP22793107.8A EP22793107A EP4399466A1 EP 4399466 A1 EP4399466 A1 EP 4399466A1 EP 22793107 A EP22793107 A EP 22793107A EP 4399466 A1 EP4399466 A1 EP 4399466A1
Authority
EP
European Patent Office
Prior art keywords
chain
dryer
dryer according
chains
driven
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
EP22793107.8A
Other languages
German (de)
English (en)
Other versions
EP4399466C0 (fr
EP4399466B1 (fr
Inventor
Volker Gress
Fabian GREB
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.)
Grenzebach BSH GmbH
Original Assignee
Grenzebach BSH GmbH
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 Grenzebach BSH GmbH filed Critical Grenzebach BSH GmbH
Publication of EP4399466A1 publication Critical patent/EP4399466A1/fr
Application granted granted Critical
Publication of EP4399466C0 publication Critical patent/EP4399466C0/fr
Publication of EP4399466B1 publication Critical patent/EP4399466B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/02—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in the whole or part of a circle
    • F26B15/08—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in the whole or part of a circle in a vertical plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/122—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of material being carried by transversely moving rollers or rods which may rotate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/20—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all vertical or steeply inclined
    • F26B15/22—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all vertical or steeply inclined the objects or batches of materials being carried by endless belts the objects or batches of material being carried by trays or holders supported by endless belts or chains
    • F26B15/24—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all vertical or steeply inclined the objects or batches of materials being carried by endless belts the objects or batches of material being carried by trays or holders supported by endless belts or chains in a zig-zag path
    • 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
    • F26B25/003—Handling, e.g. loading or unloading arrangements for articles
    • F26B25/004—Handling, e.g. loading or unloading arrangements for articles in the shape of discrete sheets
    • 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
    • F26B25/02—Applications of driving mechanisms, not covered by another subclass
    • 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
    • F26B3/04—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 circulating over or surrounding the materials or objects to be dried

Definitions

  • Dryer with a conveyor system for conveying panels to be dried
  • the invention relates to a dryer with a conveyor system for conveying boards to be dried according to the preamble of patent claim 1 .
  • Gypsum plasterboard essentially consists of a gypsum core, which is covered with cardboard on the surface and on the long side. A cardboard surface (upper and lower cardboard) attached to the top and bottom of the gypsum core are glued together.
  • a dryer according to the preamble of patent claim 1 is known from EP 1 232 371 B1.
  • This dryer has conveying devices arranged in tiers, each conveying device being designed as a roller conveyor.
  • the drive system consists of a large number of endless chains.
  • the dryer consists, for example, of drying chambers, fields or sections which are usually of the same length and which are repeated in the dryer in a similar or identical manner in the direction of passage of the boards.
  • the drier is a continuous drier from which the boards, especially plasterboard, leave as dried boards after they have passed through it.
  • DE 10 2009 059 822 B4 discloses a dryer for drying boards, in which the boards are guided through the drying chambers in tiers, the boards being brought into contact with drying air by means of impingement jet ventilation and impingement jet ventilation being ensured by means of cross-ventilated nozzle boxes.
  • nozzle boxes for targeted impingement jet ventilation are not required because there is no risk of uneven drying and the boards at these temperatures are not damaged by uneven drying can be damaged. For this reason, the use of nozzle boxes in a low-temperature dryer is not necessary; it it is sufficient to ventilate the panels to be dried with warm air lengthwise or crosswise.
  • low-temperature drying is that it can be combined with heat exchangers or other concepts for using the warm air.
  • Low-temperature drying is often implemented in connection with environmentally friendly and energy-saving measures.
  • the reason for this is that due to the low temperatures, low-calorific heat sources can be used to generate energy. Examples of this are solar collectors or process exhaust air from other system parts, which are used very efficiently in this area.
  • Wallboards in particular are suitable for low-temperature drying.
  • the dryer is cross-ventilated in this application.
  • Flat boards, such as plasterboard, are dried lying horizontally.
  • the invention creates a system for drying the gypsum plasterboards, which allows a larger number of gypsum plasterboards per room unit to be dried and transported compared to the prior art.
  • a drive system is created that is adapted to a dryer working at low temperature and to the large number of boards, in particular plasterboard, which are processed in the low-temperature dryer simultaneously over a large number of floors, for example forty to sixty floors.
  • a large number of floors in connection with the drive system according to the invention, a longer dwell time of the boards, in particular the gypsum plasterboards, can be realized in a low-temperature dryer with the same dryer length as in a high-temperature dryer.
  • a configuration of the dryer is advantageous in which, in the case of a single chain, this overlaps the floors of the respective field in a zigzag or meandering manner.
  • Each chain is equipped with at least one drive motor; in the case of a large chain length, two or more drive motors can be provided, as is known from EP 1 232 371 B1.
  • the chains are preferably electronically synchronized with each other per field and, moreover, preferably over the entire length of the dryer, for example via a radio link, for example according to the master-slave principle or by means of an incremental encoder; preferably motors with frequency converters are used; alternatively, the chains are driven together via a mother chain.
  • the support rollers are mounted on roller bearings.
  • Graphite-based plain bearings required for high-temperature dryers are not required.
  • roller bearings have lower coefficients of friction than plain bearings.
  • the support roller is preferably stored with internal roller bearings. The axis stands still during operation and only the support roller shell rotates together with the sprocket. Alternatively, storage can also take place outside of the support roller. In this case, flanged units must be used and the shaft must also rotate. If internal bearings are used, a continuous axle must be used. Another variant is the use of shaft journals on both ends of the roller.
  • the bearings are arranged on the outside, for example.
  • the production of idlers with a continuous axle is easier.
  • the greater material cost of the continuous axis is hardly significant. Therefore, according to the invention, support rollers with a continuous axis and internal storage are preferably used.
  • roller bearings are preferably designed as ball bearings, deep groove ball bearings or needle roller and cage bearings.
  • a chain tensioning device is arranged for each chain or at least for each mother chain.
  • the chain tensioning device is preferably stored in a suspended manner.
  • a roller conveyor is used because it can be built very compactly.
  • horizontal transport of the panels to be dried using a roller conveyor using driven support rollers is suitable.
  • Support rollers with the smallest possible diameter are therefore preferably used.
  • Carrying rollers with internal bearings and a continuous axis, in particular with a mounting with grooved ball bearings, are particularly preferred.
  • the power In order to rotate all idlers evenly, the power must be transferred from a central power source (motor, etc.) to all idlers.
  • the chain drive is made on one side of the idlers.
  • Fig. 1 is a side view of a drive side of a bay of a dryer with the bay's roller conveyors being driven by a single chain.
  • Figure 2 is a side view of a drive-side section of a dryer, the roller conveyors of the section being driven by a plurality of chains which in turn are driven by a mother chain, and
  • FIG. 3 shows the mounting of a support roller of a roller conveyor in longitudinal section.
  • support rollers 1 as roller conveyors of a complete field 2 of a dryer are each driven by a single chain 3 covering all levels of field 2 by means of a motor 4, which is preferably a geared motor.
  • the chain 3 is also guided over deflection wheels 5-8.
  • the tiers each extend above the support rollers 1 located at the same height.
  • the support rollers 1 (FIG. 2) of a field 2 are driven by a plurality of chains 10. Power is transmitted by means of a mother chain 11 to a plurality of chains 10 acting as driven chains. Each of the chains 10 must be tensioned and lubricated individually; corresponding clamping and lubricating devices (not shown here) are therefore provided.
  • the Mother chain 1 1 is centrally driven by a single motor, such as a (not shown here) geared motor. Both the chains 10 and the mother chain 1 1 are deflected by pulleys 5, 6; 12, 13 deflected. Coupled sprocket pairs 11a each transmit the driving force of the mother chain 11 to the chains 10.
  • the master chain 11 can be used and scaled either for a single field of the dryer or for a plurality of fields. That means, if necessary, a larger mother chain can be used, which drives the output chains on several fields. In this case, fewer geared motors are required per dryer. The chain forces in the driven chains and idler sprockets are relatively low
  • Chain slide rails are advantageously used in both variants according to FIG. 1 and FIG. 2 in order to keep the chains 3, 10, 11 on track.
  • a clamping device is used, for example, as is known, for example, in EP 1 232 371 B1 and is provided with the reference number 12 in FIG.
  • Each field of the low-temperature dryer is equipped with a steel frame as a supporting structure, which also supports the conveyor system.
  • the supporting structure includes, for example, several steel profiles as main beams and secondary beams.
  • the support structure is in turn attached to a foundation.
  • the plasterboard in the event of a defect, in particular if the dryer is blocked with plasterboard, can be removed floor by floor on the non-drive side of the dryer.
  • the support rollers are preferably mounted within one floor of a field of the dryer in such a way that they have a fixed bearing on their drive side and a floating bearing on the non-drive side.
  • the roller conveyor according to the invention has, for example, forty tiers which, for example, have a tier spacing of up to 100 mm and are designed for two lanes of boards to be dried that are conveyed next to one another, although more lanes of gypsum plasterboard can also be transported next to one another in a dryer with correspondingly wider dimensions. This results in a minimum dryer length of 25 bays, for example, which corresponds to a length of 60 m, in order to achieve the required production output.
  • One level of the roller conveyor consists, for example, of seven driven support rollers on one level.
  • the support rollers have an outside diameter of 60 mm, for example; it is also not ruled out that non-driven support rollers can also be present between driven support rollers.
  • the support rollers have a width that covers the entire width of the panels being conveyed next to one another and have a continuous axis and internal bearings.
  • an axle support is preferably used in the middle.
  • All floors are attached to the designated supports in a fixed/floating bearing construction.
  • Vertical beams made of folded sheet metal are used as beams on the drive side. These are attached to the main girders of the scaffolding via two additional metal sheets.
  • Recesses in the form of keyholes (fixed bearings) are provided in the vertical supports. Longitudinal beams are used on the non-drive side, which are fastened to the main beams via slotted holes. Recesses are provided in the side members into which the axles of the idler rollers can be inserted (loose bearings).
  • the roller conveyor is driven, for example, by means of a spur gear motor.
  • the geared motor transmits the power to a mother chain, which in turn transmits the power to, for example, two output chains.
  • the driven chains are chains which, for example, each drive three or four rows of support rollers.
  • the idlers are driven tangentially.
  • the drives of several fields are driven with a mother chain.

Landscapes

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

Abstract

L'invention concerne un séchoir équipé d'une installation de transport comprenant une pluralité de champs (2) qui s'étendent les uns derrière les autres dans la direction de transport pour le transport de plaques continues à sécher dans une pluralité d'étages par champ (2), des dispositifs de transport se présentant sous la forme de convoyeurs à rouleaux (1) agencés en étages, un système d'entraînement comprenant une pluralité de chaînes sans fin (3), au moins un entraînement étant associé à chaque chaîne (3). Cette invention est caractérisée en ce que les convoyeurs à rouleaux (1) de tous les étages d'un champ (2) peuvent être entraînés respectivement par l'intermédiaire d'au moins une chaîne (3) unique qui s'étend sur les étages d'un champ (2) respectif.
EP22793107.8A 2021-09-11 2022-09-11 Séchoir avec un convoyeur pour transporter des plaques à sécher Active EP4399466B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021004585.8A DE102021004585A1 (de) 2021-09-11 2021-09-11 Trockner mit einer Förderanlage zum Fördern zu trockender Platten
PCT/EP2022/025423 WO2023036469A1 (fr) 2021-09-11 2022-09-11 Séchoir doté d'une installation de transport destinée à transporter des plaques à sécher

Publications (3)

Publication Number Publication Date
EP4399466A1 true EP4399466A1 (fr) 2024-07-17
EP4399466C0 EP4399466C0 (fr) 2025-08-20
EP4399466B1 EP4399466B1 (fr) 2025-08-20

Family

ID=83903229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22793107.8A Active EP4399466B1 (fr) 2021-09-11 2022-09-11 Séchoir avec un convoyeur pour transporter des plaques à sécher

Country Status (9)

Country Link
US (1) US20240384932A1 (fr)
EP (1) EP4399466B1 (fr)
JP (1) JP2024534948A (fr)
KR (1) KR20240063937A (fr)
CN (1) CN117940729A (fr)
CA (1) CA3231139A1 (fr)
DE (1) DE102021004585A1 (fr)
ES (1) ES3046057T3 (fr)
WO (1) WO2023036469A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118305882B (zh) * 2024-04-28 2024-10-18 常爱兵 一种建筑石膏板快速干燥煅烧机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4326877C1 (de) 1993-08-11 1994-10-13 Babcock Bsh Ag Verfahren zum Trocknen von Platten und Trockner
DE29701755U1 (de) * 1997-02-01 1997-04-17 Babcock-BSH GmbH, 36251 Bad Hersfeld Vorrichtung zum Wärmebehandeln von durchlaufenden platten- oder bandförmigen Gütern
DE19955147C2 (de) 1999-11-17 2002-02-28 Babcock Bsh Gmbh Rollenbahntrockner
DE102009059822B4 (de) 2009-12-21 2015-12-10 Grenzebach Bsh Gmbh Verfahren und Vorrichtung zum Trocknen von Gipsplatten
CN112556399B (zh) * 2020-12-09 2022-04-12 湖北北新建材有限公司 一种石膏板干燥装置

Also Published As

Publication number Publication date
EP4399466C0 (fr) 2025-08-20
EP4399466B1 (fr) 2025-08-20
JP2024534948A (ja) 2024-09-26
KR20240063937A (ko) 2024-05-10
DE102021004585A1 (de) 2023-03-16
WO2023036469A1 (fr) 2023-03-16
CA3231139A1 (fr) 2023-03-16
CN117940729A (zh) 2024-04-26
US20240384932A1 (en) 2024-11-21
ES3046057T3 (en) 2025-12-01

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