WO1999067074A1 - Machine melangeuse-agitratrice et procede de production de plaque de platre au moyen de ladite machine - Google Patents

Machine melangeuse-agitratrice et procede de production de plaque de platre au moyen de ladite machine Download PDF

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Publication number
WO1999067074A1
WO1999067074A1 PCT/JP1999/003160 JP9903160W WO9967074A1 WO 1999067074 A1 WO1999067074 A1 WO 1999067074A1 JP 9903160 W JP9903160 W JP 9903160W WO 9967074 A1 WO9967074 A1 WO 9967074A1
Authority
WO
WIPO (PCT)
Prior art keywords
mixer
gypsum board
slurry
attachment
mixing
Prior art date
Application number
PCT/JP1999/003160
Other languages
English (en)
Japanese (ja)
Inventor
Yasuo Kojima
Tadashi Takeda
Original Assignee
Yoshino Gypsum Co., Ltd.
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 Yoshino Gypsum Co., Ltd. filed Critical Yoshino Gypsum Co., Ltd.
Priority to AU41660/99A priority Critical patent/AU4166099A/en
Publication of WO1999067074A1 publication Critical patent/WO1999067074A1/fr

Links

Classifications

    • 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
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B28B17/02—Conditioning the material prior to shaping
    • B28B17/023—Conditioning gypsum
    • 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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • 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
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0092—Machines or methods for applying the material to surfaces to form a permanent layer thereon to webs, sheets or the like, e.g. of paper, cardboard

Definitions

  • the present invention relates to a mixing stirrer and a method for producing a gypsum board using the mixing stirrer.
  • the present invention relates to a mixing stirrer (mixer) used in a gypsum board manufacturing process widely used as a building material, particularly as an interior material, and a method for manufacturing a gypsum board by using the mixer.
  • Mixer used in a gypsum board manufacturing process widely used as a building material, particularly as an interior material, and a method for manufacturing a gypsum board by using the mixer.
  • Gypsum board is widely used as a building interior material because of its fire resistance, sound insulation, workability, and economy.
  • a gypsum board is a plate-like body in which a gypsum-based core is covered with a gypsum board base paper (hereinafter referred to as base paper).
  • base paper a gypsum board base paper
  • plaster of Paris, an adhesion aid, a curing accelerator, and a light-weight gypsum are used.
  • slurry calcined gypsum slurry
  • Foam, other additives, etc., as well as an admixture and water, and the resulting calcined gypsum slurry (hereinafter referred to as "slurry") is poured between upper and lower base paper, and It is formed into a plate shape by passing between the forming rolls and between the upper and lower plates, then hardened on a conveyor belt, roughly cut, forcedly dried, and cut into product dimensions.
  • the above-mentioned slurry is generally manufactured using a thin circular mixer.
  • a mixer generally has a fixed flat circular casing, and a turntable rotatably disposed in the casing, and a plurality of kneading components is provided near a central region of an upper lid of the casing.
  • a supply port is provided, and a discharge port for discharging the kneaded slurry is provided on the outer periphery of the housing (annular wall).
  • a rotating shaft for rotating the rotating disk and a driving device for the rotating shaft are connected to the rotating disk.
  • the housing has a plurality of upper pins that hang down to the vicinity of the turntable.
  • Kneaders of this type are ⁇ ⁇ , for example, as disclosed in US Pat. No. 3,459,620.
  • a kneader of a type other than the pin-type kneader for example, there is a kneader disclosed in Japanese Patent Publication No. 58-169292, but the kneader includes a housing, A rotating disk disposed in a housing, and a plurality of deflecting blades are disposed on an upper surface of the rotating disk.
  • the kneader includes a housing, A rotating disk disposed in a housing, and a plurality of deflecting blades are disposed on an upper surface of the rotating disk.
  • a tooth or a tooth profile for notching the kneading component outwardly, and a discharge port is provided in a lower lid of the housing below the tooth profile. Have been.
  • the foam is injected into the housing by being provided on the side of the housing, and simultaneously producing slurry of different specific gravities, and a plurality of drains disposed on the outer peripheral portion (annular wall) or the outer peripheral region of the lower lid of the housing.
  • a kneader that discharges slurry having different specific gravities from an outlet is disclosed in Japanese Patent Application Laid-Open No. 6-164052.
  • the slurry adheres to the surface of the rotating plate and the surface under the Z or the top lid and hardens, which grows into a large and strong attachment.
  • the broken hardened body is crushed by the centrifugal force to the outside of the turntable radius and shreds into small pieces, which are then discharged out of the machine together with the moving slurry through the outlet.
  • the discharged slurry containing the strong kashiwa (cured gypsum) is then poured between the upper and lower base papers and guided to a molding machine, for example, between the vertically arranged molding rolls or between the plates. It is formed into a plate shape.
  • the mixer In the event of this production interruption, the mixer must be removed in order to avoid having to remove the hardened material caused by the hardening of the slurry in the kneader (disassembly 'removal' assembly). After the slurry in the sir is completely discharged, the mixer is stopped. Therefore, when an out-of-paper accident occurs, the work (removal / cleaning) of the hardened slurry discharged before the mixer stops and the work of cleaning the molding machine and conveyor belt, etc., are inevitably required, and a great deal of labor is required. In addition to spending, the productivity of gypsum board is significantly reduced.
  • the present invention provides a mixer used in the production of a gypsum board, wherein a slurry discharge outlet is provided with an attachment having a sorting through opening. And a method for producing a gypsum board using the mixer.
  • FIG. 1 is a process explanatory view partially and schematically showing a gypsum board forming process.
  • FIG. 2 is a perspective view of the mixer
  • (a) is a perspective view of a mixer in which a discharge port is provided in an annular wall
  • (b) is a discharge port in a peripheral region of a lower lid of the housing.
  • FIG. 4 is a perspective view of the mixer that was provided.
  • FIG. 3 is a front view of the inside of a discharge port provided with an attachment having a sorting through-opening provided in the annular wall of the mixer, wherein (a) and (b) show the sorting through-opening.
  • the part is a slit-shaped attachment (a is a slit perpendicular to the circumferential direction of the annular wall, and b is a slit parallel to the circumferential direction of the annular wall),
  • (c) is a diagram showing that the sorting through opening is a grid-like attachment.
  • the attachment is composed of an aggregate of openings having a large number of openings that do not allow large and strong kashiwa to be selected and pass therethrough, and the shape of the openings is any as long as the size of Kashiwa can be selected.
  • a shape can be used.
  • a preferable example of the shape of the opening is a grid (grid) shape or a slit (blind) shape.
  • the above-mentioned attachment can be applied to all of the outlets provided in the mixer.
  • one or more outlets provided in the annular wall, or one or more outlets provided in the outer peripheral region of the lower cover of the housing. Can be attached to The size of the attachment is designed to correspond to that of the outlet.
  • the present invention provides a method for producing a gypsum board, characterized by using the mixer of the present invention when obtaining gypsum slurry in a method for producing a gypsum board in order to achieve the above object.
  • the gap between the grid or the slit in the through-opening of the attachment is formed by a molding machine, for example, a gap such as a vertically arranged molding roll or a vertically arranged plate (plaster to be manufactured). (Equivalent to the thickness of the board product).
  • a molding machine for example, a gap such as a vertically arranged molding roll or a vertically arranged plate (plaster to be manufactured).
  • the large and strong kashiwa generated in the mixer is not discharged outside the machine even if it is brought to the discharge port together with the slurry moving radially outward of the turntable due to the centrifugal force. While being circulated, they are fragmented to a size that can pass through the attachment and discharged outside the machine. Therefore, the size of the discharged Kashiwa is smaller than the gap of the molding machine into which the slurry is guided, and it is possible to effectively prevent the base paper from being broken due to strong cakes when forming the gypsum board.
  • FIG. 1 is a process explanatory view partially and schematically showing a gypsum board forming process.
  • Base sheet 1 of the base paper is transported along the production line.
  • a mixer or kneader (hereinafter, referred to as a mixer) 10 is disposed at a predetermined position associated with the transport line, for example, above the transport line.
  • Gypsum an adhesion aid, a curing accelerator, other additives, and water are supplied to the mixer 10, the raw materials are kneaded by the mixer 10, and the resulting mud 2 is discharged from the discharge port through the discharge pipe. Is supplied to the undersheet 1 via The discharge pipe discharges the slurry 2 to the central area of the backing paper 1 in the width direction.
  • the backing paper 1 is transported together with the slurry 2 spreading in the width direction and reaches a pair of rolls 3 and 3.
  • the upper paper 4 partially turns around the outer periphery of the upper roll 3 and is turned in the direction of the transport line, and the turned upper paper 4 comes into contact with the slurry on the lower paper 1 and passes between the rolls 3 and 3
  • the slurry 2 is formed into a plate-shaped gypsum board in which the slurry 2 is covered with the base papers 1 and 4 and transferred in the direction of the transport line.
  • the plate-like body reaches the rough cutting machine 5 while being hardened.
  • the plate is roughly cut to a predetermined length, passed through a dryer and cut to a predetermined product length, thus producing a gypsum board product.
  • the thickness of the product is determined by the gap between the rolls 3,3.
  • FIG. 2 is a perspective view of the mixer 10.
  • FIG. 2A is a perspective view of the mixer 10 in which a discharge port 34 is provided in an annular wall 23, and
  • FIG. 2B is a perspective view of the mixer 10.
  • FIG. 3 is a perspective view of a mixer 10 provided in a circumferential area of a lower cover 22 of a housing 20.
  • FIG. 3 is a front view of the inside of a discharge port 34 provided with an attachment 33 having a sorting through-opening 32 provided in an annular wall 23 of the mixer 10, wherein (a) and ( (b) shows that the sorting through opening 32 is a slit-shaped attachment 33, and (c) shows that the sorting through opening 32 is a grid-shaped attachment 33.
  • the mixer 10 has a flat casing (housing) 20, and the casing 20 is composed of a horizontal disc-shaped upper lid 21 and a lower lid 22 at predetermined intervals. And an annular wall 23 arranged on the outer peripheral portion of the upper lid 21 and the lower lid 22.
  • a circular opening 24 is formed at the center of ⁇ ⁇ 21, and the enlarged lower end 26 of the vertical rotating shaft 25 penetrates the circular opening 24, and a rotation built in the housing 20. It is connected to a panel (not shown).
  • the rotary shaft 25 is connected to a rotary drive (not shown). As shown in FIG.
  • the annular wall 23 has a grid-like or Is provided with a slurry discharge port (separation port) 34 on which a slit-like attachment 33 is set, and is connected to a discharge pipe 36 via a conduit 35.
  • a powder supply port 27 for supplying raw materials, a water supply port 28, and a foam supply port 29 for adjusting the volume of the slurry are connected to predetermined positions on the upper lid 21.
  • pins are implanted at predetermined positions on the turntable and the bottom surface of the upper lid 21 in a well-known state, and the outer periphery of the turntable is similarly cut in a well-known state.
  • a missing tooth profile is provided.
  • the annular wall For the production of gypsum board, for example, 9.5 mm thick gypsum board, the annular wall
  • a grid-shaped or slit-shaped attachment 33 having 3 2 is provided, and a predetermined amount of each of plaster of Paris, an adhesion aid, a curing accelerator, other admixtures, foam and water is supplied to a predetermined amount of the upper lid 21.
  • the upper paper 4 is partially turned around the outer periphery of the upper roll 3 and turned in the direction of the transport line.
  • the turned upper paper 4 is brought into contact with the slurry 2 on the lower paper 1 and passed between the rolls 3 and 3.
  • the plate-like body while hardening, reaches the rough cutting machine 5, and the plate-like body is roughly cut to a predetermined length, passed through a dryer, cut to a predetermined product length, and thus, 9.
  • a 5 mm thick gypsum board product is manufactured.
  • the large and strong kashiwa generated in the mixer is not discharged out of the machine by the grid-shaped or slit-shaped attachment 33, and the discharged kashiwa is rolled by press-forming rolls 3 and 3. It is smaller than the interval, and there is no accident of breaking the base paper due to the discharge of the mixer, and continuous operation is possible without interrupting production.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Panels For Use In Building Construction (AREA)

Abstract

L'invention porte sur une mélangeuse capable d'empêcher efficacement le flottement du papier de base pendant la production de plaque de plâtre et l'interruption en découlant, et sur un procédé de production de plaque de plâtre au moyen de la machine mélangeuse, laquelle est dotée, au niveau de son orifice de décharge de la boue, d'une attache comprenant une ouverture de rejet par criblage empêchant que la décharge de la mélangeuse de grumeaux solides de grande taille produits dans la mélangeuse ne provoque le flottement du papier de base.
PCT/JP1999/003160 1998-06-22 1999-06-14 Machine melangeuse-agitratrice et procede de production de plaque de platre au moyen de ladite machine WO1999067074A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU41660/99A AU4166099A (en) 1998-06-22 1999-06-14 Mixing-agitating machine and method of producing gypsum board using mixing-agitating machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP17476598A JP4100766B2 (ja) 1998-06-22 1998-06-22 混合撹拌機及び該混合撹拌機を用いた石膏ボードの製造方法
JP10/174765 1998-06-22

Publications (1)

Publication Number Publication Date
WO1999067074A1 true WO1999067074A1 (fr) 1999-12-29

Family

ID=15984292

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1999/003160 WO1999067074A1 (fr) 1998-06-22 1999-06-14 Machine melangeuse-agitratrice et procede de production de plaque de platre au moyen de ladite machine

Country Status (3)

Country Link
JP (1) JP4100766B2 (fr)
AU (1) AU4166099A (fr)
WO (1) WO1999067074A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2827207A1 (fr) * 2001-07-13 2003-01-17 Lafarge Platres Procede et dispositif pour la rupture et la segregation de grumeaux dans une pate de platre
EP1486306A1 (fr) * 2002-02-18 2004-12-15 Nissan Kenzai Co. Ltd. Procede pour eviter l'adherence de corps etrangers de gypse d'une pate de platre, dispositif de stabilisation de l'alimentation en pate de platre comprenant un dispositif pour eviter l'adherence de corps etrangers de gypse, et procede de realisation de plaque de platre par utilisation du dispositif
US7690834B2 (en) * 2003-05-26 2010-04-06 Yoshino Gypsum Co., Ltd Mixer and mixing method for producing gypsum slurry
US20160121287A1 (en) * 2014-10-30 2016-05-05 United States Gypsum Company Slurry mixer discharge gate adapter with transitioning cross-sectional geometry
US20170008192A1 (en) * 2013-12-17 2017-01-12 Yoshino Gypsum Co., Ltd. Mixer, mixing method, and method for producing lightweight gypsum board
US9700861B2 (en) * 2015-09-04 2017-07-11 United States Gypsum Company Slurry mixer gate having enhanced extractor ports
CN107949462A (zh) * 2015-08-26 2018-04-20 吉野石膏株式会社 混合机和混合方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8685188B2 (en) 2002-09-20 2014-04-01 Yoshino Gypsum Co., Ltd. Apparatus and method for fractionating gypsum slurry and method of producing gypsum board
GB2431400A (en) * 2005-10-19 2007-04-25 Bpb Plc Method for accelerating the setting reaction of a calcium sulphate hemihydrate and water slurry

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4973415A (fr) * 1972-11-15 1974-07-16
JPS5816929B2 (ja) * 1978-08-09 1983-04-04 ナシヨナル ジプサム カンパニ− 混練機
JPH0825342A (ja) * 1994-07-15 1996-01-30 Yoshino Sekko Kk 混合撹拌機及び混合撹拌方法
JPH08281632A (ja) * 1995-04-17 1996-10-29 Torabaasu:Kk セメントミルク製造用プラント

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4973415A (fr) * 1972-11-15 1974-07-16
JPS5816929B2 (ja) * 1978-08-09 1983-04-04 ナシヨナル ジプサム カンパニ− 混練機
JPH0825342A (ja) * 1994-07-15 1996-01-30 Yoshino Sekko Kk 混合撹拌機及び混合撹拌方法
JPH08281632A (ja) * 1995-04-17 1996-10-29 Torabaasu:Kk セメントミルク製造用プラント

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2827207A1 (fr) * 2001-07-13 2003-01-17 Lafarge Platres Procede et dispositif pour la rupture et la segregation de grumeaux dans une pate de platre
EP1486306A1 (fr) * 2002-02-18 2004-12-15 Nissan Kenzai Co. Ltd. Procede pour eviter l'adherence de corps etrangers de gypse d'une pate de platre, dispositif de stabilisation de l'alimentation en pate de platre comprenant un dispositif pour eviter l'adherence de corps etrangers de gypse, et procede de realisation de plaque de platre par utilisation du dispositif
EP1486306A4 (fr) * 2002-02-18 2007-02-21 Nissan Kenzai Co Ltd Procede pour eviter l'adherence de corps etrangers de gypse d'une pate de platre, dispositif de stabilisation de l'alimentation en pate de platre comprenant un dispositif pour eviter l'adherence de corps etrangers de gypse, et procede de realisation de plaque de platre par utilisation du dispositif
US7690834B2 (en) * 2003-05-26 2010-04-06 Yoshino Gypsum Co., Ltd Mixer and mixing method for producing gypsum slurry
US10668646B2 (en) * 2013-12-17 2020-06-02 Yoshino Gypsum Co., Ltd. Mixer including foam feeding port, mixing method, and method for producing lightweight gypsum board
US20170008192A1 (en) * 2013-12-17 2017-01-12 Yoshino Gypsum Co., Ltd. Mixer, mixing method, and method for producing lightweight gypsum board
US9694332B2 (en) * 2014-10-30 2017-07-04 United States Gypsum Company Slurry mixer discharge gate adapter with transitioning cross-sectional geometry
US20160121287A1 (en) * 2014-10-30 2016-05-05 United States Gypsum Company Slurry mixer discharge gate adapter with transitioning cross-sectional geometry
CN107949462A (zh) * 2015-08-26 2018-04-20 吉野石膏株式会社 混合机和混合方法
US20180243943A1 (en) * 2015-08-26 2018-08-30 Yoshino Gypsum Co., Ltd. Mixer and mixing method
CN107949462B (zh) * 2015-08-26 2020-02-21 吉野石膏株式会社 混合机和混合方法
US10589444B2 (en) * 2015-08-26 2020-03-17 Yoshino Gypsum Co., Ltd. Mixer and mixing method for gypsum slurry
EP3342571B1 (fr) 2015-08-26 2020-07-15 Yoshino Gypsum Co., Ltd. Mélangeur et procédé de mélange
US9700861B2 (en) * 2015-09-04 2017-07-11 United States Gypsum Company Slurry mixer gate having enhanced extractor ports

Also Published As

Publication number Publication date
AU4166099A (en) 2000-01-10
JP4100766B2 (ja) 2008-06-11
JP2000006137A (ja) 2000-01-11

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