EP2037198B1 - Installation de séchage d'une multitude de moules en plâtre de préférence en plusieurs parties - Google Patents

Installation de séchage d'une multitude de moules en plâtre de préférence en plusieurs parties Download PDF

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Publication number
EP2037198B1
EP2037198B1 EP20080015940 EP08015940A EP2037198B1 EP 2037198 B1 EP2037198 B1 EP 2037198B1 EP 20080015940 EP20080015940 EP 20080015940 EP 08015940 A EP08015940 A EP 08015940A EP 2037198 B1 EP2037198 B1 EP 2037198B1
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EP
European Patent Office
Prior art keywords
drying chamber
hot air
plaster
segment
drying
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.)
Active
Application number
EP20080015940
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German (de)
English (en)
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EP2037198A2 (fr
EP2037198A3 (fr
Inventor
Franz Scharnagl
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.)
Maschinen und Stahlbau Julius Lippert GmbH and Co KG
Original Assignee
Maschinen und Stahlbau Julius Lippert GmbH and Co KG
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.)
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Publication of EP2037198A3 publication Critical patent/EP2037198A3/fr
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Classifications

    • 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
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • 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
    • F26B21/006—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects the gas supply or exhaust being effected through hollow spaces or cores in the materials or objects, e.g. tubes, pipes, bottles
    • 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
    • F26B25/06—Chambers, containers, or receptacles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
    • F26B2210/02—Ceramic articles or ceramic semi-finished articles
    • 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
    • F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers

Definitions

  • the invention relates to a system for drying a plurality of preferably multi-part plaster molds, preferably designed as plaster molds, in each of which a mold cavity for a sanitary ceramic article is formed, wherein the mold cavity has a slip-pouring inlet and a vent opening, wherein it is provided that the Plant has a flow of hot air flow through a drying chamber for receiving the plaster molds to be dried.
  • Plaster molds for sanitary ceramic articles usually have a weight of more than 100 kg or even a weight of more than 200 kg.
  • the plaster molds serve to produce sanitary ceramics by casting.
  • a ceramic slip is poured into the mold cavity of the multi-part plaster mold through the slip-pouring, until the mold cavity is filled with the slurry.
  • the air in the mold cavity escapes through the vent opening of the plaster mold.
  • the plaster mold can then be broken down into their individual parts and a soft, but steadfast sanitary ceramic object can be removed.
  • liquid gypsum is cast in the individual parts of the plaster mold corresponding shapes. These forms result then the individual parts of the plaster mold. Subsequently, the individual parts of the plaster mold are assembled and dried. The initial moisture of the plaster mold is more than 30% water.
  • At least one multi-part gypsum mold is dried in a hot-air drying chamber with the aid of warm air in conventional drying systems.
  • the drying times of such multi-part plaster molds for sanitary ceramic articles of large mass> 100 kg can be 60, 90 and 120 hours in the conventional systems. These drying times depend on the plaster mold sizes.
  • the DE 3708642 A1 discloses a system for drying ceramic blanks with connected modules, which are each formed multi-storey, so that there is a continuous upper and lower plant floor. A stream of hot air is recirculated in the individual segments.
  • the invention is based on the object to provide a system of the type mentioned, which is structurally simple and allows fast and effective drying of a plurality of plaster molds.
  • the modularity of the system results in particular advantages in the production and use of the system.
  • a particularly effective mode of operation results from the warm air circulation current which passes through the upper plant floor and the lower plant floor.
  • the hot air admission provided there of the interior of the plaster molds is particularly advantageous.
  • the drying chamber segments is associated with a pressure line, which is fed on the input side by means of a high-pressure fan device with hot air and this blows the output side under pressure in the mold cavity of the plaster molds to be dried.
  • the pressure line can be formed as a branched pressure line with at least one branching position whose output-side branch lines are assigned to the drying chamber segments such that in each case at least one branch line is fed to each drying chamber segment.
  • the hot air blower device that can be connected to the plaster mold can have at least one pressure blower.
  • the hot air blower device may comprise a number of pressure blowers for a number provided in the hot air drying chamber, to be dried plaster molds, or the hot air blower device may provide a single pressure fan with a number of connecting lines for a number in the hot air drying chamber , have to be dried plaster molds.
  • Plants of the latter type are used as industrial drying systems to supply a number of gypsum molds with core air from a corresponding number of pressure blowers or from a common large pressure blower with a number of leads, and the plaster molds not only from their outer surface but at the same time from the inside ie Starting from the mold cavity, to dry.
  • the at least one pressure blower is expediently connectable by means of a hose line to the slurry pouring opening or to the ventilation opening of the at least one plaster mold to be dried.
  • the hot air blower device can be arranged in the hot-air drying chamber or associated with it.
  • the high-pressure fan sucks air out of the process space and presses this air into a pipe network.
  • the plaster molds At this Pipework connected are the plaster molds to be dried.
  • the air In front of the fan, the air is depressurised or has negative pressure, after the fan the air has overpressure.
  • the drying installation according to the invention has the advantages that the drying time for plaster molds for sanitary ceramic articles is reduced by at least 50% compared to known drying installations in which the drying of the plaster mold takes place from its outer surface, and the energy requirement of the drying installation according to the invention correspondingly is reduced.
  • the hot air flow guided in the drying space has a temperature in the range from 40 ° to 80 ° C. and the outside of the plaster molds set up there flows at 10 m / sec and that a hot air flow with a pressure greater in the interior of the plaster molds as 1,000 Pascal and with a temperature equal to that in the hot air flow of the drying room is blown.
  • the Figures 1 and 2 show a plant 10 for drying at least one multi-part plaster mold 12, in which a mold cavity 14 is formed for a sanitary ceramic article. In the illustrated embodiment, it is a toilet bowl.
  • the mold cavity 14 of the plaster mold 12 has a slip pouring opening 16 and a vent opening 18 remote therefrom.
  • the system 10 has a hot-air drying chamber 20, which can be supplied with hot air by means of an air heater 22.
  • the air heater 22 has air heater 24 and associated air circulation fan 26.
  • the system 10 has a hot-air blower device 28, which can be connected to dry the at least one plaster mold 12, starting from the interior, to the slip-pouring 16 or to the vent opening 18 of the mold cavity 14 of the plaster mold 12.
  • the hot air blower device 28 is connected to the slurry pouring port 16.
  • the hot-air blower device 28 on the output side with a flexible connecting line 30, that is connected to a hose line 32.
  • the hot air blower device 28 is connected to a pipe 34, which introduces hot air from the hot air drying chamber 20 through the hot air blower 28 and the connection or hose 30, 32 in the mold cavity 14 of the plaster mold 12 to the plaster mold 12 not only starting from its outer surface 36 but at the same time also from its interior, ie starting from the mold cavity 14 to dry.
  • the consumed hot air is discharged through the vent opening 18 of the plaster mold 12 and discharged through an exhaust device 38 from the system 10.
  • the hot air blower device 28 has at least one pressure blower 40. If the plant 10 is provided for a number of plaster molds 12, it is possible that the hot air blower device 28, a number of pressure blower 40 for a Number provided in the hot-air drying chamber 20, to be dried plaster molds 12 has. Another possibility is that the hot air blower device 28 has a single pressure blower 40 with a number of connecting line 30 for a number in the hot air drying chamber provided, to be dried plaster molds 12.
  • the hot air blower 28 may be disposed in or associated with the hot air drying chamber 20, i. be adjacent to the hot-air drying chamber 20.
  • vent opening is preferably at the upper part of the plaster mold and the pouring port, also shown in the example shown above, can also be arranged at the bottom or product-dependent top.
  • the in the FIGS. 3 and 4 Plant 500 shown has five drying chamber segments 501 arranged side by side in a row forming the composite drying chamber.
  • each drying chamber segment 501 four plaster molds 12 are set up for drying.
  • the drying chamber segments 501 are each 2-storey, wherein in the case illustrated two plaster molds in the upper floor and two molds in the lower floor are arranged in each case.
  • Each drying chamber segment 501 has a loading door 502 on its front side.
  • These doors 502 are each formed in the illustrated case as a double-leaf doors.
  • a deflecting segment 503, 504 is respectively arranged on the front side, which connects the upper throughflow channel to the lower throughflow channel.
  • the relieving device 503a consists of an axial fan installed in the circulating-air segment 503 on the upper floor and an axial fan installed on the lower floor.
  • the air heater 503b is formed as a direct gas burner, the flame extends into the deflection of the air flow.
  • the deflection segment 504 drawn on the left in the figures has an exhaust device 504a and a fresh air supply device 504b, which communicate with the air flow deflected in the deflection segment 504.
  • the temperature of the hot air flow is driven by the air heater 503b during the drying process with a temperature curve between 50 and 75 °.
  • the volume flow is adjusted via the axial blower 503a so that the hot air flow on the outside of the plaster molds has a speed of about 10 m per second.
  • both or even only one of the axial fans 503a are switched on.
  • the axial fans 503a are designed for a flow rate of 30,000 m 3 / h at a pressure of 400 Pascal.
  • the flow direction of the axial blower 503a is switched temporarily, so that the plaster molds to be dried are not only constantly flowed from one side, but alternately from both sides, to avoid shadowing or one-sided drying largely.
  • the inner mold cavity of the plaster molds 12 is in the in the FIGS. 3 and 4 system shown provided a high-pressure fan 560, the hot air from the circulating hot air stream, sucks in the illustrated case from the upper flow channel and the output side feeds a branched pressure line 564.
  • the cable ends of the branched Pressure line 564 are respectively connected to the slip-pouring port or to the vent opening of the mold cavity 14 of the plaster molds 12.
  • the high pressure fan 560 is arranged in the region of the upper floor on the ceiling side outside of the flow channel.
  • the branched pressure line 564 is a line system consisting of pipes or hoses, wherein the line system is connected via a line on the output side to the high pressure fan 560. This line branches at a first branch point into a first horizontally extending distribution line, branch off from the five vertical branch lines 564a.
  • Branch lines 564a are associated with five drying chamber segments 501, ie, each branch line 564a leads into its associated drying chamber segment 501.
  • each branch line 564a has an upper branch point and an adjoining lower branch point.
  • the upper branching point represents a branching in three branching lines, two of the branching lines leading to the two upper-level plaster molds and the third branching line leading to the lower branching point, from which branch off two branching lines, which are fed to the two arranged on the lower floor plaster molds ,
  • the branch lines supplied to the respective plaster molds 12 are respectively connected to the slurry pouring opening 16 or to the ventilation opening 18 of the mold cavity 14 of the respective plaster mold 12.
  • a shut-off valve is arranged in order to switch on and off the warm air admission of the mold cavity during operation and in connection with the charging process.
  • the high pressure fan 560 is designed to provide a pressure of 8000 Pascals on the output side, ie the hot air is injected into the mold cavity at a pressure of 8000 Pascal. It flows through the mold cavity in the interior of the plaster mold 12 and that depending on the connection of the pressure line to the slip pouring 16 or at the vent 18 and additionally on the formed in the respective multi-part plaster mold columns and cracks between the moldings. Thus, the hot air flows in the interior of the plaster mold 12, a large surface and thus ensures a particularly effective removal of moisture from the interior of the plaster mold 12th

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Claims (11)

  1. Installation de séchage d'une pluralité de moules en plâtre (12) en plusieurs parties, de préférence réalisées comme des moules en plâtre, dans lesquels respectivement une cavité de moule (14) est réalisée pour un objet céramique sanitaire, la cavité de moule (14) présentant une ouverture de coulage de barbotine (16) et une ouverture de ventilation (18),
    étant prévu que
    l'installation présente une chambre de séchage (20) parcourue par un courant d'air chaud pour la réception des moules en plâtre (12) à sécher,
    a) la chambre de séchage (20) étant composée de plusieurs segments de chambre de séchage (501) réalisés comme modules, agencés les uns à côté des autres et
    les segments de chambre de séchage (501) étant réalisés respectivement à plusieurs étages avec un étage supérieur pour la réception d'au moins un des moules en plâtre (12) à sécher et un étage inférieur pour la réception d'au moins un autre des moules en plâtre (12) à sécher, et
    les étages supérieurs des segments de chambre de séchage (501) agencés les uns à côté des autres formant un étage d'installation supérieur continu avec un canal de passage supérieur continu pour le courant d'air chaud et les étages inférieurs des segments de chambre de séchage (501) agencés les uns à côté des autres formant un étage d'installation inférieur continu avec un canal de passage inférieur continu pour le courant d'air chaud ; et
    b) respectivement un segment de déviation (503, 504) étant agencé sur l'extrémité frontale libre des deux segments de chambre de séchage (501) terminaux, qui relie le canal de passage supérieur au canal de passage inférieur et dévie le courant d'air chaud en réalisant un courant de circuit d'air chaud.
  2. Installation selon la revendication 1,
    caractérisée en ce que
    le segment de déviation (503) présente un dispositif de circulation d'air (503a) avec au moins une soufflante axiale et/ou un dispositif de chauffage d'air (503b).
  3. Installation selon la revendication 2,
    caractérisée en ce que
    le dispositif de chauffage d'air présente au moins un brûleur ou une autre source de chaleur, par exemple réalisée sous la forme d'un brûleur direct.
  4. Installation selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le segment de déviation (504) présente un dispositif d'évacuation d'air (504a) et/ou un dispositif d'amenée d'air frais (504b).
  5. Installation selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    une conduite de pression (564) est associée aux segments de chambre de séchage (501), laquelle est alimentée en air chaud côté entrée à l'aide d'un dispositif de soufflante haute pression (560) et l'insuffle côté sortie sous pression dans la cavité de moule (14) des moules en plâtre (12) à sécher.
  6. Installation selon la revendication 5,
    caractérisée en ce que
    la conduite de pression (564) peut être raccordée côté sortie à l'ouverture de coulage de barbotine (16) ou à l'ouverture de ventilation (18) de la cavité de moule du moule en plâtre (12) à sécher.
  7. Installation selon la revendication 5 ou 6,
    caractérisée en ce que
    la conduite de pression (564) est réalisée comme une conduite de pression dérivée avec au moins un point de dérivation, dont les conduites de dérivation (564a) côté sortie sont associées aux segments de chambre de séchage (501) de telle manière que respectivement au moins une conduite de dérivation (564a) soit amenée à chaque segment de chambre de séchage (501).
  8. Installation selon la revendication 7,
    caractérisée en ce que
    la conduite de dérivation (564a) associée au segment de chambre de séchage (501) respectif présente au moins un point de dérivation, dont les conduites de dérivation dérivées sont associées aux moules en plâtre (12) à sécher agencés dans le segment de chambre de séchage (501) de telle manière que respectivement au moins une conduite de dérivation dérivée soit amenée à chacun des moules en plâtre (12).
  9. Installation selon l'une quelconque des revendications 5 à 10,
    caractérisée en ce que
    le dispositif de soufflante haute pression (560) est agencé sur un côté extérieur et/ou dans la zone d'une paroi extérieure de la chambre de séchage (501), de préférence dans la zone de la paroi supérieure de la chambre de séchage.
  10. Installation selon l'une quelconque des revendications 5 à 9,
    caractérisée en ce que
    le dispositif de soufflante haute pression (560) est relié côté entrée à la chambre de séchage (501), de préférence dans la zone du segment de déviation (503, 504) de telle manière qu'il aspire de l'air chaud du courant de circuit d'air chaud de la chambre de séchage.
  11. Installation selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    une porte de chargement (502) est agencée, de préférence réalisée comme une porte à deux vantaux, sur un côté frontal du segment de chambre de séchage (501).
EP20080015940 2007-09-14 2008-09-10 Installation de séchage d'une multitude de moules en plâtre de préférence en plusieurs parties Active EP2037198B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710045349 DE102007045349A1 (de) 2007-09-14 2007-09-14 Anlage zum Trocknen einer Mehrzahl von vorzugsweise mehrteiligen Gipsformen

Publications (3)

Publication Number Publication Date
EP2037198A2 EP2037198A2 (fr) 2009-03-18
EP2037198A3 EP2037198A3 (fr) 2013-05-29
EP2037198B1 true EP2037198B1 (fr) 2014-12-31

Family

ID=40088487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080015940 Active EP2037198B1 (fr) 2007-09-14 2008-09-10 Installation de séchage d'une multitude de moules en plâtre de préférence en plusieurs parties

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EP (1) EP2037198B1 (fr)
DE (1) DE102007045349A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106766714A (zh) * 2016-12-08 2017-05-31 滁州源远纸制品有限公司 一种纸管生产用纸管干燥箱

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111735289A (zh) * 2020-05-25 2020-10-02 陆升(福建)集团有限公司 一种白瓷制品的烘干装置及其使用方法
CN111854352A (zh) * 2020-07-28 2020-10-30 沈阳和世泰通用钛业有限公司 烘干装置
CN116067133B (zh) * 2022-12-30 2023-12-26 台宜陶瓷（宜兴）有限公司 一种连续竖向陶瓷烧成炉群系统及烧成方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB422236A (en) * 1933-11-04 1935-01-08 Lancelot Arthur Mitchell Improvements in or relating to drying stoves
DE1735590U (de) * 1953-01-15 1956-12-06 Gg Kiefer Maschf Vorrichtung zur trocknung von holz.
AT281689B (de) * 1966-03-11 1970-05-25 Vanicek Viktor Trocknungsanlage
SE318691B (fr) * 1968-04-29 1969-12-15 Norrmalms Ind Ab
DE2314142C3 (de) * 1973-03-21 1980-11-20 Gebrueder Netzsch, Maschinenfabrik Gmbh & Co, 8672 Selb Verfahren und Vorrichtung zum Vorbereiten einer Gießform fur das Gießen keramischer Gußstücke
DE3708642C2 (de) * 1987-03-17 1997-08-14 Imas S P A Vorrichtung für die rasche Trocknung von keramischen Rohprodukten, insbesondere von Fliesen
FI4462U1 (fi) * 2000-02-25 2000-06-02 O Wood Ltd Oy Kuivauslaite

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106766714A (zh) * 2016-12-08 2017-05-31 滁州源远纸制品有限公司 一种纸管生产用纸管干燥箱
CN106766714B (zh) * 2016-12-08 2019-02-01 重庆新万合环保包装科技有限公司 一种纸管生产用纸管干燥箱

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Publication number Publication date
EP2037198A2 (fr) 2009-03-18
DE102007045349A1 (de) 2009-03-19
EP2037198A3 (fr) 2013-05-29

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