WO2012128344A1 - 連続混練装置 - Google Patents
連続混練装置 Download PDFInfo
- Publication number
- WO2012128344A1 WO2012128344A1 PCT/JP2012/057458 JP2012057458W WO2012128344A1 WO 2012128344 A1 WO2012128344 A1 WO 2012128344A1 JP 2012057458 W JP2012057458 W JP 2012057458W WO 2012128344 A1 WO2012128344 A1 WO 2012128344A1
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- WO
- WIPO (PCT)
- Prior art keywords
- kneading
- powder
- rotary
- plate
- slurry
- Prior art date
Links
- 238000004898 kneading Methods 0.000 title claims abstract description 160
- 239000000463 material Substances 0.000 claims abstract description 93
- 239000000843 powder Substances 0.000 claims abstract description 89
- 238000000576 coating method Methods 0.000 claims abstract description 67
- 239000011248 coating agent Substances 0.000 claims abstract description 66
- 239000007788 liquid Substances 0.000 claims description 59
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 24
- 229920002530 polyetherether ketone Polymers 0.000 claims description 24
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 17
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 17
- 238000010008 shearing Methods 0.000 claims description 13
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 239000011135 tin Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 6
- 239000000758 substrate Substances 0.000 abstract description 6
- 239000002002 slurry Substances 0.000 description 66
- 239000002994 raw material Substances 0.000 description 28
- 239000010453 quartz Substances 0.000 description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 16
- 238000007790 scraping Methods 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 10
- 229910001220 stainless steel Inorganic materials 0.000 description 10
- 239000010935 stainless steel Substances 0.000 description 10
- 239000007787 solid Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910003481 amorphous carbon Inorganic materials 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- HDTRYLNUVZCQOY-UHFFFAOYSA-N α-D-glucopyranosyl-α-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OC1C(O)C(O)C(O)C(CO)O1 HDTRYLNUVZCQOY-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- HDTRYLNUVZCQOY-WSWWMNSNSA-N Trehalose Natural products O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 HDTRYLNUVZCQOY-WSWWMNSNSA-N 0.000 description 1
- HDTRYLNUVZCQOY-LIZSDCNHSA-N alpha,alpha-trehalose Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 HDTRYLNUVZCQOY-LIZSDCNHSA-N 0.000 description 1
- METIGIXCFPEQNM-UHFFFAOYSA-M amino-(2-bromoethyl)-dimethylazanium;bromide Chemical compound [Br-].C[N+](C)(N)CCBr METIGIXCFPEQNM-UHFFFAOYSA-M 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229940100445 wheat starch Drugs 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/93—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with rotary discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/53—Mixing liquids with solids using driven stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/70—Spray-mixers, e.g. for mixing intersecting sheets of material
- B01F25/74—Spray-mixers, e.g. for mixing intersecting sheets of material with rotating parts, e.g. discs
- B01F25/741—Spray-mixers, e.g. for mixing intersecting sheets of material with rotating parts, e.g. discs with a disc or a set of discs mounted on a shaft rotating about a vertical axis, on top of which the material to be thrown outwardly is fed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/051—Stirrers characterised by their elements, materials or mechanical properties
- B01F27/053—Stirrers characterised by their elements, materials or mechanical properties characterised by their materials
- B01F27/0531—Stirrers characterised by their elements, materials or mechanical properties characterised by their materials with particular surface characteristics, e.g. coated or rough
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
- B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
- B01F27/2712—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator provided with ribs, ridges or grooves on one surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
Definitions
- the present invention relates to a continuous kneading apparatus for continuously mixing and kneading powder such as quartz powder and liquid, and continuous kneading capable of efficiently and continuously mixing fine particles of submicron order and liquid substance. Relates to the device.
- This application claims priority based on Japanese Patent Application No. 2011-066463 filed in Japan on March 23, 2011, the contents of which are incorporated herein by reference.
- a continuous kneading apparatus for continuously kneading a powder such as quartz powder and a liquid as shown in Patent Documents 1 and 2 is known.
- the continuous kneading apparatus of Patent Document 1 has a configuration in which kneading chambers each containing a rotary kneading machine are provided in multiple upper and lower stages, and powder and liquid are simultaneously supplied to the upper kneading chamber to perform kneading.
- the rotary kneader in the kneading chamber is set to a small diameter
- the rotary kneader in the lower kneading chamber is set to a large diameter
- the powder kneaded with the liquid while moving in the centrifugal direction in the upper kneading chamber Is introduced directly from the outer peripheral edge of the upper rotary kneader into the kneading region on the rotary kneader in the lower kneading chamber.
- a stainless material is used as a base material for a rotating mixing board or the like that is a member that contacts and mixes a kneaded product (slurry) of powder and liquid.
- a kneaded product slurry
- the slurry adheres to the stainless steel material, and particularly when the object of kneading is fine particles of submicron order or less, good kneading can be performed.
- the viscosity of the slurry is increased, and as a result, the discharge property of the slurry from the apparatus is deteriorated, and the temperature of the slurry is increased to change the product characteristics.
- the rotary kneader which is a component of the apparatus, is rotatably supported via a bearing, so that the frictional heat is less likely to escape due to the small contact area with other members, which is higher than other members. It was temperature.
- the present invention has been made in view of the above-mentioned circumstances, and has good kneadability with respect to the slurry at the time of rotary kneading, and ensures good dischargeability from the apparatus as the viscosity of the slurry is lowered. And it aims at providing the continuous kneading apparatus which can also reduce the temperature of a slurry.
- the present inventors generally paid attention to the dynamic friction coefficient of a material because a material having a small dynamic friction coefficient is considered to have low wettability. Therefore, as a result of various tests conducted by changing the material of each member constituting the inside of the apparatus, specifically, the constituent member that is in direct contact with the object to be kneaded, the constituent member inside the apparatus is made of a material having a small dynamic friction coefficient. In addition, as the kneading progressed well, it was found that the viscosity of the slurry was lowered and the temperature of the slurry was also lowered, leading to the present invention.
- the continuous kneading apparatus includes an upper cylinder to which a powder supply cylinder to which a quantified powder is supplied is connected and the powder is mixed with a liquid, and an upper cylinder below the upper cylinder to the upper cylinder.
- a lower drum connected concentrically, and a first rotary kneading plate built in the upper drum and a second rotary kneading plate built in the lower drum, In which at least the surfaces of the first and second rotary kneaders are made of a material having a smaller dynamic friction coefficient than metal.
- a metal stainless steel (JIS SUS304) is mentioned, for example.
- the surfaces of the first and second rotary kneaders are coated with a coating material, and the coating material is diamond-like carbon (also called amorphous carbon or amorphous carbon).
- DLC diamond-like carbon
- PEEK polyetheretherketone
- PTFE polytetrafluoroethylene
- TiN titanium nitride
- TiCN titanium carbonitride
- the inner surfaces of the upper cylinder and the lower cylinder may be coated with a coating material having a smaller dynamic friction coefficient than metal.
- the coating material coated on the inner surfaces of the upper cylinder and the lower cylinder may be a PEEK material.
- At least the surfaces of the first rotary kneading plate located in the upper drum and the second rotary kneading plate located in the lower drum are made of a material having a smaller dynamic friction coefficient than metal.
- a material having a smaller dynamic friction coefficient than metal has been.
- DLC coating, PEEK coating, PTFE coating, TiN coating, TiCN coating are applied to the surface of the base material of the first rotary kneader located in the upper shell and the second rotary kneader located in the lower drum. Therefore, the coating material can provide a good kneadability of the slurry, and can reduce the viscosity of the slurry.
- the first rotary kneader and the second rotary kneader may be made of a resin material having a lower dynamic friction coefficient than that of metal.
- the lower end of the upper cylinder is between the lower surface of the inner flange portion protruding radially inward of the upper cylinder and the upper surface of the second rotary kneading plate in the lower cylinder.
- a shear kneading part, the shear kneading part being fixed to the lower surface of the inner flange, and a rotating plate fixed to the upper surface of the second rotary kneader and rotating together with the second rotary kneader.
- the rotating plate rotates in a state of facing the upper surface of the fixed plate, thereby applying a shearing force to the kneaded material of the powder and liquid between the fixed plate and the rotating plate.
- at least the surfaces of the rotating plate and the fixed plate of the shear kneading unit may be made of a material having a lower dynamic friction coefficient than that of the metal.
- the rotation plate of the shear kneading part and the fixed plate are made of a material having a lower coefficient of dynamic friction than that of metal.
- uneven portions may be formed on the opposing surfaces of the fixed plate and the rotating plate of the shear kneading unit.
- the fixed plate fixed to the lower surface of the inner flange portion of the upper body, and the rotation fixed to the upper surface of the second rotary kneader and rotating together with the second rotary kneader.
- a shear kneading part is composed of the plate, and the rotating plate of the shear kneading part rotates with respect to the fixed plate, so that a kneaded product (slurry) of powder and liquid is formed between the rotating plate and the fixed plate.
- a shearing force can be applied.
- the resin material having a lower coefficient of dynamic friction than the metal may be PEEK or PTFE.
- At least the surfaces of the first rotary kneader located in the upper drum and the second rotary kneader located in the lower drum are made of a material having a smaller dynamic friction coefficient than metal.
- DLC coating, PEEK coating, PTFE coating, TiN coating and TiCN coating are applied to the surface of the base material of the first rotary kneader located in the upper shell and the second rotary kneader located in the lower shell. If so, the wettability of these coating materials is low, so that the good kneadability of the slurry can be obtained by the coating material, and the viscosity of the slurry can be lowered. Along with this, good dischargeability from the apparatus can be secured, and the temperature of the slurry can be lowered.
- the shear kneading unit is constituted by the fixed plate fixed to the lower surface of the projecting portion of the upper body and the rotating plate fixed to the upper surface of the second rotary kneader and rotating together with the second rotary kneader.
- the rotating plate of the shear kneading part rotates with respect to the fixed plate, a shearing force can be applied to the kneaded product of the powder and the liquid between the rotating plate and the fixed plate.
- a larger shearing force can be applied to the kneaded product of the powder and the liquid by knurling cutting or forming concave and convex portions by concave grooves on the opposing surfaces of the stationary plate and the rotating plate of the shear kneading portion. it can.
- FIG. 1 is a front sectional view of a continuous kneading apparatus 100 according to the present invention. It is a figure which shows the rotating plate 22 of the 2nd rotary kneading board 11 which knurled, (A) is a top view, (B) is a front sectional view of radial direction. It is a figure which shows the fixing plate 21 by the side of the upper trunk
- FIG. 1 is a front sectional view of a continuous kneading apparatus 100 according to the present invention.
- the reference numeral 1 is an upper cylinder
- the reference numeral 2 is concentrically fixed to the lower side of the upper cylinder 1.
- the lower torso are the upper torso.
- the upper body 1 has a first kneading chamber 1B inside the upper body 1A, and a powder supply device (not shown) for supplying a constant amount of powder to the upper portion of the first kneading chamber 1B. ) And a liquid supply pipe 4 connected to a liquid supply device (not shown) for supplying a liquid to be mixed with the powder. Further, flange portions 1C and 1D projecting outward in the radial direction are integrally formed on the upper edge portion and the lower edge portion of the upper body 1A of the upper body 1, and the powder portion is formed on the flange portion 1C. A supply cylinder 3 is fixed, and a lower body 2 is fixed to the flange portion 1D.
- the lower body 2 has a second kneading chamber 2B inside the lower body 2A.
- a flange portion 2C that protrudes radially outward is integrally formed on the upper edge portion of the lower trunk body 2A of the lower barrel 2, and the lower flange portion of the upper barrel 1 is formed on the flange portion 2C.
- Part 1D is contacted and fixed.
- a bottom plate 2D disposed horizontally is integrally formed at the lower edge of the lower body 2A of the lower body 2, and a powder and liquid are disposed between the bottom plate 2D and the lower body 2A.
- a discharge port 5 for discharging the slurry which is a kneaded product.
- the inner diameter of the second kneading chamber 2B of the lower barrel 2 is formed larger than the inner diameter of the first kneading chamber 1B in the upper barrel 1, and the first kneading chamber 1B and the second kneading chamber 2B communicate with each other. It is provided in the state.
- a first rotary kneader 10 and a second rotary kneader 11 are arranged, respectively. 11 is driven by a common rotary drive shaft 12.
- the rotary drive shaft 12 is supported by a bearing 13 so as to pass through the central portion of the bottom plate 2D, and is supplied to an external drive source (not shown) disposed at the lower end thereof and is rotationally driven. .
- a plurality of kneading pins 10 ⁇ / b> A are provided on the lower surface of the first rotary kneading board 10.
- the lower portion of the upper barrel 1 is inward (rotation drive shaft 12).
- Side the inner side of the flange portion 1D of the upper body 1 protrudes toward the kneading chambers 1B and 2B to form an inner flange portion 1DD, and these (outer) flange portion 1D and the lower surface of the inner flange portion 1DD,
- a shear kneading section 20 is provided between the upper surface of the second rotary kneading board 11 in the lower body 2.
- the shear kneading unit 20 is fixed to the lower plate of the flange portion 1D and the inner flange portion 1DD of the upper body 1 and the upper surface of the second rotary kneading plate 11 and fixed to the second rotary kneading plate 11.
- a rotating plate 22 that rotates together with the rotating plate 22, and the rotating plate 22 rotates with the rotation of the second rotating kneading board 11, so that the kneaded product of the powder and liquid is fixed between these fixed plates 21.
- a shearing force is applied to the slurry.
- the peripheral portion and the lower surface side of the second rotary kneading platen 11 scrape the slurry from the inner surface portion of the lower trunk main body 2A and guide a side scraper 30 and a scraping blade 31 to the discharge port 5.
- the supply of the liquid to the pre-kneading chambers 1B and 2B is not limited to being performed through the powder supply cylinder 3, but an overflow cone is provided so as to surround the powder supply cylinder 3, and an annular overflow by the overflow cone is provided. What was comprised so that a liquid might flow down as a film
- membrane may be further attached.
- the shear kneading unit 20 has a knurled cutting process in a predetermined direction on the upper surface of the rotary plate 22 of the second rotary kneader 11 with a predetermined width and the upper surface being inclined with respect to the circumferential direction ( (Denoted by reference numeral 22a). Further, as shown in FIG. 3, a knurled cutting process (reference numeral 21 a) is performed on the lower surface of the fixed plate 21 on the upper body 1 side that rotates relative to the rotating plate 22 in a direction intersecting with the knurling of the rotating plate 22. Is shown).
- the first rotary kneading plate 10, the second rotary kneading plate 11, the first kneading chamber 1B in the upper barrel 1 and the second kneading chamber 2B in the lower barrel 2 have the powder and A coating material 50 (50A / 50B) for reducing friction between the powder and the slurry, which is a kneaded product of liquid, is coated during kneading with the liquid.
- the coating material 50 (50A / 50B) is formed so as to cover the entire surface including the knurled cutting work 21a / 22a provided on the rotating plate 22 and the fixed plate 21.
- stainless steel is used as the base material, and materials such as DLC, PEEK, PTFE, TiN, and TiCN are used as the coating material coated on the base material.
- DLC coating material
- PEEK coating material
- the reason why the DLC coating is used as the coating material 50 (50A) for the second rotary kneading plate 11, the fixed plate 21, the first rotary kneading plate 10, and the scraping blade 31 is as follows. That is, knurl-like cutting is performed on the opposing surfaces of the rotating plate 22 and the fixed plate 21 to form fine grooves, and when adopting a normal coating method, the fine grooves are filled. Therefore, there is a possibility that the original function of the fine groove, that is, the function of exerting a high shearing action may be impaired.
- the fine groove is held as it is, and the fine groove has This is because the original function, that is, the function exerting a high shearing action can be sufficiently exhibited.
- the coating by DLC is thin and uniform with a thickness of about 1 ⁇ m, even when a strong shear load is applied, the coating layer is difficult to peel off from the substrate.
- the reason for using the PEEK material as the coating material 50B on the inner surfaces of the first kneading chamber 1B in the upper drum 1 and the second kneading chamber 2B in the lower drum 2 is, for example, when PTFE resin is used.
- chemical resistance, water / oil repellency, and non-adhesiveness have the same performance, but wear resistance is ten times that of fluororesin.
- the dynamic friction coefficient is equivalent to that of fluororesin, and it has a stable property against temperature changes.
- powder is continuously supplied into the powder supply cylinder 3 at the center of the upper surface of the first rotary kneading board 10 in the first kneading chamber 1B.
- a liquid is supplied from the liquid supply pipe 4 by a liquid supply means (not shown), and the powder and the liquid are kneaded by the rotational drive of the first rotary kneading board 10, and then the kneaded product of the powder and the liquid is used.
- the powder and liquid are placed on the surface of the base material of the first rotary kneading board 10 located in the upper drum 1 and the second rotary kneading board 11 located in the lower drum 2.
- Coating material 50 (50A) that reduces friction with the slurry during kneading is coated.
- the dynamic friction coefficient is determined by the coating material.
- the viscosity of the slurry can be lowered.
- the inner surfaces of the upper cylinder 1 and the lower cylinder 2 are coated with a PEEK coating that reduces friction between the powder and the liquid and the slurry when kneaded with the powder. Good kneadability of the slurry can also be obtained at the contact portion, and the viscosity of the slurry can be lowered here as well.
- the fixing plate 21 fixed to the lower surface of the flange portion 1D of the upper body 1 and the upper surface of the second rotary kneading plate 11 are fixed to the first kneading apparatus 100.
- the shear kneading unit 20 is constituted by the rotating plate 22 that rotates together with the two-rotation kneading plate 11, and the rotating plate 22 of the shear kneading unit 20 rotates with respect to the fixed plate 21, so that the rotating plate 22 and the fixed plate 21 are rotated.
- a shearing force is applied to the slurry, which is a mixture of powder and liquid, and the surface of the rotary plate 22 and the fixed plate 21 is also provided with a DLC coating. Good kneadability can be obtained.
- this invention is not limited to the above-mentioned embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.
- a knurled cutting process reference numeral
- the concave shape is formed along the circumferential direction which is the rotational direction of the rotating plate 22 and at regular intervals in the radial direction.
- Grooves 21b and 22b may be formed, and a shearing force may be applied to the slurry by the concave and convex portions formed by the concave grooves 21b and 22b.
- the rotating plate 22 including these concave grooves 21b and 22b.
- the entire upper surface and the lower surface of the fixing plate 21 are coated with the coating material 50 (50A).
- the fluid is supplied together with the powder through the powder supply cylinder 3 connected to the upper body 1, but the present invention is not limited to this, and the fluid is supplied to the lower flange portion of the upper body 1.
- a liquid jet nozzle is provided in 1D, and liquid may be supplied directly to a location where the fixed plate 21 and the rotating plate 22 of the shear kneading unit 20 face each other (that is, a location where shear force is applied to the slurry). good.
- the fixing plate 21 of the shear kneading unit 20 is fixed to the lower flange portion 1D of the upper body 1, the present invention is not limited to this, and the fixing plate 21 is opposite to the rotating plate 22.
- the slurry may be rotationally driven in a direction to apply a greater shearing force to the slurry.
- drum 2 is made larger diameter than the upper trunk
- the fixing plate 21 may be fixed to the lower surface of the inner flange portion 1DD provided on the upper body 1.
- the present invention is not limited to this, and all or a part of the first rotary kneader 10 and the second rotary kneader 11 such as the side scraper 30 and the scraping blade 31 may be made of, for example, PEEK having a lower dynamic friction coefficient than metal.
- PEEK having a lower dynamic friction coefficient than metal.
- You may comprise with resin materials itself, such as PTFE.
- the fixed plate 21 and the rotating plate 22 may be made of a resin material itself such as PEEK or PTFE having a lower dynamic friction coefficient than that of metal.
- the dynamic friction coefficient of aluminum was 0.6 and the dynamic friction coefficient of stainless steel was 0.5, whereas when these substrates were coated, the TiN coating was 0.4, and the TiCN coating was The dynamic friction coefficient was 0.3 for DLC coating or 0.1 for DLC coating or PEEK coating and 0.05 for PTFE coating.
- Example 1 the surfaces of the rotary kneaders 10 and 11, the surface of the scraping blade 31, the inner surface of the upper barrel 1 and the inner surface of the lower barrel 2 were respectively covered with DLC coating (material).
- DLC coating material
- food misc powder pastedered rice, starch, wheat protein, trehalose, thickening polysaccharide
- 10 wt% saline as a liquid raw material
- Stainless steel was used as the base material for these members.
- stainless steel was used as a base material for the rotary kneader 10 and the like.
- Example 2 is an example in which quartz powder having a volume-based average particle diameter of 0.8 ⁇ m, which is a powder raw material, and ion-exchanged water, which is a liquid raw material, are kneaded using the same apparatus configuration as that of Example 1.
- the surface of the rotary kneaders 10 and 11, the surface of the scraping blade 31, the inner surface of the upper body 1 and the inner surface of the lower body 2 were respectively covered with PTFE coating (material), and the powder raw material was used.
- PTFE coating material
- Example 4 the surface of the rotary kneaders 10 and 11, the surface of the scraping blade 31, the inner surface of the upper body 1 and the inner surface of the lower body 2 were respectively covered with PEEK coating (material), and the powder raw material was used.
- PEEK coating material
- the powder raw material was used.
- Example 5 is a powder raw material in which the surfaces of the rotary kneaders 10 and 11, the surface of the scraping blade 31, the inner surface of the upper cylinder 1 and the inner surface of the lower cylinder 2 are respectively covered with TiCN coating (material).
- TiCN coating material
- Example 6 the surface of the rotary kneaders 10 and 11, the surface of the scraping blade 31, the inner surface of the upper body 1 and the inner surface of the lower body 2 were each covered with a TiN coating (material).
- a TiN coating material
- Example 7 the surfaces of the rotary kneaders 10 and 11 and the surface of the scraping blade 31 are each covered with DLC coating (material), and the inner surface of the upper cylinder 1 and the inner surface of the lower cylinder 2 are respectively covered with PEEK coating (material).
- quartz powder which is a powder raw material
- ion-exchanged water which is a liquid raw material
- Example 8 the surfaces of the rotary kneaders 10 and 11 and the surface of the scraping blade 31 are each covered with TiCN coating (material), and the inner surface of the upper cylinder 1 and the inner surface of the lower cylinder 2 are respectively covered with PEEK coating (material).
- quartz powder which is a powder raw material
- ion-exchanged water which is a liquid raw material
- the surfaces of the rotary kneaders 10 and 11 and the surface of the scraping blade 31 are each covered with a TiN coating (material), and the inner surface of the upper cylinder 1 and the inner surface of the lower cylinder 2 are respectively covered with a PEEK coating (material).
- quartz powder, which is a powder raw material, and ion-exchanged water, which is a liquid raw material are kneaded.
- Example 10 rotary kneaders 10 and 11, scraper blades 31, upper body 1 and lower body 2 were each made of PTFE material, and miscible powder for food as a powder material and salt as a liquid material. This is an example in which water is kneaded.
- Example 11 the rotary kneaders 10 and 11 and the scraping blades 31 made of PEEK material were used, and the upper body 1 and the lower body 2 were made of PTFE material.
- a certain quartz powder and ion exchange water as a liquid raw material are kneaded.
- the rotary kneaders 10 and 11, the raking blades 31, the upper drum, and the lower drum 2 are each made of PEEK material, and only the inner surface of the upper drum 1 and the inner surface of the lower drum 2 are PEEK coated (material).
- quartz powder which is a powder raw material
- ion-exchanged water which is a liquid raw material
- the comparative example 1 is the miscible powder
- a saline solution is kneaded.
- Comparative Example 2 is an example in which quartz powder, which is a powder raw material, and ion-exchanged water, which is a liquid raw material, are kneaded using the same apparatus configuration as Comparative Example 1.
- the rotary kneaders 10 and 11, the scraping blades 31, the upper body 1 and the lower body 2 are made of aluminum, respectively, and quartz powder as a powder raw material and ion-exchanged water as a liquid raw material are used. Is an example of kneading.
- the solid content concentration of the slurry was the same as 60% by weight of the solid content (powder) with respect to the total weight of the slurry including the liquid.
- the solid content concentration of the slurry is 59 percent by weight of the solid content (powder) relative to the weight of the entire slurry including the liquid.
- the solid content concentration of the slurry is the entire slurry including the liquid.
- the weight percentage of the solid content (powder) with respect to the weight of was 63%.
- the atmospheric temperature at the time of a test and the temperature of a powder raw material and a liquid raw material are 20 degreeC, respectively.
- the viscosity was measured with a B-type viscometer BMII manufactured by Toki Sangyo Co., Ltd.
- the inner surfaces of the apparatus constituent members involved in kneading are covered with a coating material having a low dynamic friction coefficient, or directly manufactured from a material having a low dynamic friction coefficient.
- the viscosity of the slurry is 160 mPa ⁇ S to 435 mPa ⁇ S, indicating that the kneading proceeds well. Due to this influence, the slurry temperature during kneading was kept relatively low at 50 ° C., and the slurry discharge rate reached almost 100%, and it was confirmed that the slurry discharge property was also good.
- the present invention relates to a continuous kneading apparatus for continuously kneading a powder such as quartz powder and a liquid.
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Abstract
Description
本願は、2011年3月23日に、日本に出願された特願2011-064663号に基づき優先権を主張し、その内容をここに援用する。
特許文献1の連続混練装置は、回転混練盤をそれぞれ収納配置した混練室を上下多段に設け、上段の混練室に粉体と液体とを同時に供給して混練を行うようにした構成において、上段の混練室内の回転混練盤を径小に設定すると共に、下段の混練室内の回転混練盤を径大に設定し、前記上段の回転混練盤において遠心方向へ移動しながら液体と混練される粉体を、前記上段の回転混練盤の外周縁部より、下段の混練室内の回転混練盤上の混練領域へ直接導入するようにしたものである。
特に、装置の構成部材である回転混練盤は、ベアリングを介して回転自在に支持されているため、他の部材との接触面積が狭いため摩擦熱が逃げにくく、他の部材に比べてより高い温度になっていた。
本発明に係る連続混練装置は、定量された粉体が供給される粉体供給筒が接続されかつ該粉体が液体と混ぜ合わされる上部胴と、該上部胴の下側に該上部胴に対して同心状に接続された下部胴とを具備し、前記上部胴内に内蔵された第1回転混練盤と、前記下部胴内に内蔵された第2回転混練盤とによって、前記粉体と液体とを連続混練する連続混練装置であって、前記第1及び前記第2回転混練盤の少なくとも表面が金属よりも動摩擦係数が小さい材料によって構成されている。なお、金属としては、例えばステンレス(JIS SUS304)が挙げられる。
本発明に係る連続混練装置では、前記上部胴及び前記下部胴の内面は、金属よりも動摩擦係数が小さいコーティング材によって被覆されていてもよい。
本発明に係る連続混練装置では、前記上部胴及び前記下部胴の内面に被覆される前記コーティング材はPEEK材であってもよい。
本発明に係わる連続混練装置では、第1回転混練盤と第2回転混練盤を、金属よりも動摩擦係数の低い樹脂材によって構成してもよいが、この場合も前記と同様である。
なお、前記剪断混練部の回転板と前記固定板の少なくも表面が金属よりも動摩擦係数の低い材料によって構成されているとは、前記剪断混練部の回転板と前記固定板とがそれぞれ、基材の表面に金属よりも動摩擦係数の低い材料によってコーティングされている場合と、前記剪断混練部の回転板と前記固定板とが金属よりも動摩擦係数の低い材料そのものによって構成されている場合を含む意味である。
本発明に係わる発明では、前記金属よりも動摩擦係数の低い樹脂材は、PEEKまたはPTFEであってもよい。
図1は、本発明に係る連続混練装置100の正断面図であって、この図において符号1で示すものは上部胴、符号2で示すものは上部胴1の下側に同心状に固定された下部胴である。
また、前記上部胴1の上部胴本体1Aの上縁部と下縁部には半径方向外方に突出するフランジ部1C・1Dが一体に形成されており、前記フランジ部1Cには前記粉体供給筒3が固定され、前記フランジ部1Dには下部胴2が固定されている。
また、前記下部胴2の下部胴本体2Aの上縁部には半径方向外方に突出するフランジ部2Cが一体に形成されており、該フランジ部2Cには前記上部胴1の下側のフランジ部1Dが接触及び固定されている。
また、前記下部胴2の下部胴本体2Aの下縁部には水平に配置された底板2Dが一体に形成されており、該底板2Dと下部胴本体2Aとの間には、粉体と液体との混練物であるスラリーを排出するための排出口5が設けられている。
前記第1混練室1Bと第2混練室2Bとには、第1回転混練盤10と第2回転混練盤11とがそれぞれ配置されており、これら第1回転混練盤10と第2回転混練盤11とは共通の回転駆動軸12により駆動される。
この回転駆動軸12は、前記底板2Dの中心部を貫通するように軸受13に支持されており、その下端部に配置された外部駆動源(図示せず)に給合されかつ回転駆動される。また、前記第1回転混練盤10の下面には混練ピン10Aが複数設けられている。
なお、前混練室1B・2Bに対する液体の供給を、粉体供給筒3を通じて行うことに限定されず、粉体供給筒3を囲繞するようにオーバーフローコーンを設けて、このオーバーフローコーンによる環状溢流膜として液体を流下させるように構成したものを、さらに付設してもよい。
なお、図2に符号40で示すものは、回転板22を第2回転混練盤11に固定するための取付ねじであり、図3に符号41で示すものは、固定板21を上部胴1に固定するための取付ねじである。
さらに、上部胴1及び下部胴2の内面に、前記粉体と液体との混練時のスラリーとの摩擦を低減するPEEKコーティングが被覆されることで、上部胴1及び下部胴2の内面との接触部分においてもスラリーの良好な混練性が得られ、ここでもスラリーの粘度を下げることができる。
例えば、上記実施形態の剪断混練部20では、第2回転混練盤11の回転板22の上面、及び該回転板22に対して相対回転する固定板21の下面に、ローレット状の切削加工(符号21a、22aで示す)をそれぞれ施したが、これに限定されず、図4及び図5に示すように、回転板22の回転方向である周方向に沿うようにかつ半径方向に一定間隔で凹状溝21b、22bを形成し、これら凹状溝21b、22bによる凹凸部により、スラリーに剪断力を与えるようにしても良い。
この場合、混合時の摩擦によって生じるスラリーの温度上昇を防止して該スラリーの粘度の上昇を抑え、かつ装置からの排出性を改善するために、これら凹状の溝21b、22bを含む回転板22の上面及び固定板21の下面の全面に、コーティング材50(50A)による被覆を行う。
また、前記実施形態では、下部胴2を上部胴1よりも大径としているが、これに限られることなく、下部胴2と上部胴1を同程度の径に設定することも可能である。この場合、固定板21は上部胴1に設けた内フランジ部1DDの下面に固定すればよい。
まず、最初に、基材としてアルミニウム(JIS A2014)とステンレス(JIS SUS304)を用意し、コーティングを施すことなく基材そのもの、基材の表面にTiNコーティングを施したもの、基材の表面にTiCNコーティングを施したもの、基材の表面にDLCコーティングを施したもの、基材の表面にPEEKコーティングを施したもの、基材の表面にPTFEコーティングを施したものをそれぞれ用意し、それらの動摩擦係数を測定した。
なお、動摩擦係数はCSEM社製のトライボメータでのボール・オン・ディスク摩擦試験において、室温にて直径6mmの超硬合金ボールに5~20Nの荷重を加える条件下で測定した。
具体的には、粉体供給筒3から50kg/hの石英粉又は食品用ミックス粉を供給し、かつ液体供給管4から34リットル/hのイオン交換水又は食塩水を連続的に供給しつつ、2段の回転混練盤10・11を4000rpmで回転させながらスラリーを製造した。それらの結果を図7に示す。
なお、粘度は東機産業株式会社製のB型粘度計BMII型にて測定した。
なお、実施例5、6は、コーティング材として、TiCNやTiNを用いているため、スラリーの粘度が高く、スラリー排出割合も100%には達していないものの、混練時のスラリー温度は50℃以下に押さえられて、良好な結果が得られていることが確認できた。
Claims (8)
- 定量された粉体が供給される粉体供給筒が接続されかつ該粉体が液体と混ぜ合わされる上部胴と、該上部胴の下側に該上部胴に対して同心状に接続された下部胴とを具備し、前記上部胴内に内蔵された第1回転混練盤と、前記下部胴内に内蔵された第2回転混練盤とによって、前記粉体と液体とを連続混練する連続混練装置であって、
前記第1及び第2回転混練盤の少なくとも表面が金属よりも動摩擦係数が小さい材料によって構成されている連続混練装置。 - 前記第1及び前記第2回転混練盤は基材の表面がコーティング材によって被覆され、
前記コーティング材は、DLC、PEEK、PTFE、TiN、TiCNのいずれかの材料が用いられている請求項1に記載の連続混練装置。 - 前記上部胴及び前記下部胴の内面は、金属よりも動摩擦係数が小さいコーティング材によって被覆されている請求項1または2のいずれかに記載の連続混練装置。
- 前記上部胴及び前記下部胴の内面に被覆される前記コーティング材はPEEKである請求項3に記載の連続混練装置。
- 前記第1及び前記第2回転混練盤は、金属よりも動摩擦係数が小さい樹脂材によって構成されている請求項1に記載の連続混練装置。
- 前記上部胴の下端が該上部胴の半径方向内方に突出する内フランジ部の下面と、前記下部胴内の第2回転混練盤の上面との間には、剪断混練部が設けられ、
該剪断混練部は、前記内フランジ部の下面に固定された固定板と、前記第2回転混練盤の上面に固定されて該第2回転混練盤とともに回転する回転板とを有し、
前記回転板が、前記固定板の上面と対向した状態で回転することにより、これら固定板と回転板との間で、前記粉体と液体との混練物に剪断力を与え、
前記剪断混練部の回転板と前記固定板の少なくも表面が金属よりも動摩擦係数の低い材料によって構成されている請求項1~5のいずれか一項に記載の連続混練装置。 - 前記剪断混練部の固定板及び回転板の対向面には、凹凸部が形成されている請求項6に記載の連続混練装置。
- 前記金属よりも動摩擦係数の低い樹脂材は、PEEKまたはPTFEである請求項5に記載の連続混練装置。
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KR1020137024076A KR20140007897A (ko) | 2011-03-23 | 2012-03-23 | 연속 혼련 장치 |
CN201280014138.6A CN103442790B (zh) | 2011-03-23 | 2012-03-23 | 连续混炼装置 |
DE112012001378T DE112012001378T5 (de) | 2011-03-23 | 2012-03-23 | Kontinuierliche Knetvorrichtung |
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- 2012-03-09 JP JP2012052608A patent/JP5933298B2/ja active Active
- 2012-03-23 DE DE112012001378T patent/DE112012001378T5/de not_active Withdrawn
- 2012-03-23 KR KR1020137024076A patent/KR20140007897A/ko not_active Ceased
- 2012-03-23 CN CN201280014138.6A patent/CN103442790B/zh active Active
- 2012-03-23 US US14/006,188 patent/US9700858B2/en active Active
- 2012-03-23 WO PCT/JP2012/057458 patent/WO2012128344A1/ja active Application Filing
- 2012-03-23 TW TW101110144A patent/TWI551345B/zh active
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Also Published As
Publication number | Publication date |
---|---|
TW201247310A (en) | 2012-12-01 |
JP5933298B2 (ja) | 2016-06-08 |
US9700858B2 (en) | 2017-07-11 |
US20140010038A1 (en) | 2014-01-09 |
KR20140007897A (ko) | 2014-01-20 |
CN103442790B (zh) | 2015-10-07 |
DE112012001378T5 (de) | 2013-12-19 |
JP2012210621A (ja) | 2012-11-01 |
TWI551345B (zh) | 2016-10-01 |
CN103442790A (zh) | 2013-12-11 |
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