EP1901016A2 - Installation de séchage d'au moins un moule en plâtre sanitaire - Google Patents

Installation de séchage d'au moins un moule en plâtre sanitaire Download PDF

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Publication number
EP1901016A2
EP1901016A2 EP07018134A EP07018134A EP1901016A2 EP 1901016 A2 EP1901016 A2 EP 1901016A2 EP 07018134 A EP07018134 A EP 07018134A EP 07018134 A EP07018134 A EP 07018134A EP 1901016 A2 EP1901016 A2 EP 1901016A2
Authority
EP
European Patent Office
Prior art keywords
hot air
mold
plaster
air
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.)
Granted
Application number
EP07018134A
Other languages
German (de)
English (en)
Other versions
EP1901016A3 (fr
EP1901016B1 (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.)
Filing date
Publication date
Application filed by Maschinen und Stahlbau Julius Lippert GmbH and Co KG filed Critical Maschinen und Stahlbau Julius Lippert GmbH and Co KG
Publication of EP1901016A2 publication Critical patent/EP1901016A2/fr
Publication of EP1901016A3 publication Critical patent/EP1901016A3/fr
Application granted granted Critical
Publication of EP1901016B1 publication Critical patent/EP1901016B1/fr
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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
    • 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
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/10—Temperature; Pressure
    • 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

Definitions

  • the invention relates to a system for drying at least one multi-part plaster mold, in which a mold cavity for a sanitary ceramic article is formed, wherein the mold cavity has a slip pouring port and a vent opening, and the plant a hot air drying chamber for the at least one plaster mold to be dried having. Furthermore, the invention relates to a method for drying such plaster molds.
  • 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 poured into the individual parts of the plaster mold corresponding shapes. These forms then give 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.
  • the at least one multi-part plaster mold is dried in a hot air drying chamber with the aid of warm air.
  • the dry times of such multipart plaster molds for sanitary ceramic articles of large mass> 100 kg can 60, 90 and 120 hours. These drying times depend on the plaster mold sizes.
  • the present invention seeks to provide a system of the type mentioned, in which the drying times are relatively short and the energy requirements are substantially reduced.
  • This object is achieved by a system according to claim 1 and by a method according to claim 13.
  • the plant according to the invention and the method thus not only causes the at least one multi-part plaster mold to dry from its outer surface, but at the same time also dry the at least one multi-part plaster mold from its mold cavity, ie from its interior. In this way it is possible to reduce the drying times by at least 50%, whereby in addition to this shortening of the drying time and the energy consumption is reduced accordingly.
  • 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 a Supply number of plaster molds with core air from a corresponding number of pressure blowers or from a common large pressure blower with a number of leads, and at the same time to dry the plaster mold not only from its outer surface but from its interior, ie from the mold cavity.
  • 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. Connected to this pipe network are the plaster molds to be dried. 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 guided in the drying room hot air flow has a temperature in the range 40 ° to 80 ° C and the outside of the erected there plaster molds with 10 m / sec flows and that in the interior of the plaster molds a hot air flow with a Pressure greater than 1,000 Pascal and with a temperature equal to the blown in the hot air flow of the drying room.
  • the deflection segment has a recirculation device with at least one axial fan and / or has an air heater. Furthermore, it can also be provided that the deflection segment has an exhaust air discharge device and / or a Frischluftzutaxinnate.
  • the drying chamber segments is associated with a pressure line, the input side by means of a High-pressure fan device is supplied with hot air and this blows the output side under pressure in the mold cavity of the plaster molds to be dried.
  • the compressed air line can be connected on the output side to the slip-pouring opening or to the vent opening of the mold cavity of the plaster mold to be dried.
  • the pressure line may be formed as a branched pressure line with at least one branch point whose output-side branch lines are assigned to the drying chamber segments, the drying chamber segment is fed in each case at least one branch line.
  • Figures 1 and 2 show a system 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 28 is on the output side with a flexible connection line 30, i. with a hose 32, connected.
  • the hot air blower device 28 is connected to a pipe 34, which introduces warm 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 for the hot air blower device 28 to have a number of pressure blowers 40 for a number of plaster molds 12 to be dried provided in the hot air drying chamber 20. 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 plant 500 shown in FIGS. 3 and 4 has five drying chamber segments 501 which, arranged side by side in a row, form 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.
  • drying chamber segments 501 In the juxtaposition of the drying chamber segments 501, adjacent drying chamber segments adjoin each other laterally to form an upper floor with a continuous horizontal upper flow channel and a lower floor with a continuous horizontal lower flow channel.
  • a deflecting segment 503, 504 is respectively arranged on the front side, which connects the upper throughflow channel to the lower throughflow channel.
  • the right in Figures 3 and 4 deflection segment 503 has a circulation device 503a and an air heater 503b.
  • 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 a direct gas burner formed, 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.
  • a high-pressure fan 560 is provided which sucks hot air from the circulating hot air flow, in the illustrated case from the upper flow channel and the output side branches a branched pressure line 564.
  • the line ends of the branched pressure line 564 are respectively connected to the slurry 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 area of the upper floor outside the flow channel on the ceiling side.
  • the branched pressure line 564 is a Line system consisting of pipes or hoses, 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, that is to say the high pressure fan 560. H. the hot air is injected into the mold cavity at a pressure of 8000 Pascals. It flows through the mold cavity in the interior of the plaster mold 12 and depending on the connection of the pressure line to the slip-pouring 16 or at the vent opening 18 and additionally on the formed in each multi-part plaster mold gaps 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
EP07018134.2A 2006-09-15 2007-09-14 Installation de séchage d'au moins un moule en plâtre sanitaire Active EP1901016B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610044120 DE102006044120A1 (de) 2006-09-15 2006-09-15 Anlage zum Trocknen mindestens einer Sanitär-Gipsform

Publications (3)

Publication Number Publication Date
EP1901016A2 true EP1901016A2 (fr) 2008-03-19
EP1901016A3 EP1901016A3 (fr) 2008-09-17
EP1901016B1 EP1901016B1 (fr) 2015-12-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07018134.2A Active EP1901016B1 (fr) 2006-09-15 2007-09-14 Installation de séchage d'au moins un moule en plâtre sanitaire

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EP (1) EP1901016B1 (fr)
DE (1) DE102006044120A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103322771A (zh) * 2013-05-20 2013-09-25 马鞍山市益江高温陶瓷制造有限公司 一种造粒料仓通热风干燥工艺方法
CN110614703A (zh) * 2019-09-28 2019-12-27 淄博秀贤工艺品有限公司 一种用于瓷制品厂的瓷器定型装置
CN114800820A (zh) * 2022-04-29 2022-07-29 重庆安都陶瓷有限公司 酒坛陶罐胚体自动干燥系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2314142A1 (de) 1973-03-21 1974-10-03 Netzsch Maschinenfabrik Verfahren und vorrichtung zum vorbereiten einer giessform fuer das giessen keramischer gusstuecke
DD299717A7 (de) 1986-01-23 1992-05-07 Keramische Werke Hermsdorf Tridelta Ag,De Vorrichtung zum hohlgiessen keramischer koerper

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB386819A (en) * 1931-03-12 1933-01-26 Herzogenrather Glaswerke Biche Improvements in the drying of glass melting pots and other articles made from plastic material
US2666270A (en) * 1950-05-05 1954-01-19 Blanchard Paul Drying refractory linings of furnaces
GB1337492A (en) * 1971-03-05 1973-11-14 Hayek Partners Ltd Ag Casting of sanitary ware
DE3432243A1 (de) * 1984-09-01 1986-03-13 Rosenthal Ag, 8672 Selb Kombinierte giess- und trocknungsvorrichtung fuer keramische hohlgussartikel
GB9004518D0 (en) * 1990-02-28 1990-04-25 Interdri Ltd Ware drying
FR2683761B1 (fr) * 1991-11-19 1999-04-09 Forgel Sa Dispositif de sechage de moule en platre.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2314142A1 (de) 1973-03-21 1974-10-03 Netzsch Maschinenfabrik Verfahren und vorrichtung zum vorbereiten einer giessform fuer das giessen keramischer gusstuecke
DD299717A7 (de) 1986-01-23 1992-05-07 Keramische Werke Hermsdorf Tridelta Ag,De Vorrichtung zum hohlgiessen keramischer koerper

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103322771A (zh) * 2013-05-20 2013-09-25 马鞍山市益江高温陶瓷制造有限公司 一种造粒料仓通热风干燥工艺方法
CN110614703A (zh) * 2019-09-28 2019-12-27 淄博秀贤工艺品有限公司 一种用于瓷制品厂的瓷器定型装置
CN110614703B (zh) * 2019-09-28 2021-04-23 南京溧水高新创业投资管理有限公司 一种用于瓷制品厂的瓷器定型装置
CN114800820A (zh) * 2022-04-29 2022-07-29 重庆安都陶瓷有限公司 酒坛陶罐胚体自动干燥系统
CN114800820B (zh) * 2022-04-29 2024-01-23 重庆安都陶瓷有限公司 酒坛陶罐胚体自动干燥系统

Also Published As

Publication number Publication date
EP1901016A3 (fr) 2008-09-17
DE102006044120A1 (de) 2008-03-27
EP1901016B1 (fr) 2015-12-09

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