EP1644106A1 - Vorrichtung zum aufschäumen einer schlämme - Google Patents
Vorrichtung zum aufschäumen einer schlämmeInfo
- Publication number
- EP1644106A1 EP1644106A1 EP04732870A EP04732870A EP1644106A1 EP 1644106 A1 EP1644106 A1 EP 1644106A1 EP 04732870 A EP04732870 A EP 04732870A EP 04732870 A EP04732870 A EP 04732870A EP 1644106 A1 EP1644106 A1 EP 1644106A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stirring
- container
- agitator
- slurry
- foaming
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/18—Mixing in containers to which motion is imparted to effect the mixing
- B28C5/26—Mixing in containers to which motion is imparted to effect the mixing rotating about a vertical or steeply inclined axis during the mixing, e.g. comprising a flat bottomplate rotating about a vertical axis, co-operating with blades or stirrers
- B28C5/32—Mixing in containers to which motion is imparted to effect the mixing rotating about a vertical or steeply inclined axis during the mixing, e.g. comprising a flat bottomplate rotating about a vertical axis, co-operating with blades or stirrers with driven stirrers
- B28C5/325—Mixing in containers to which motion is imparted to effect the mixing rotating about a vertical or steeply inclined axis during the mixing, e.g. comprising a flat bottomplate rotating about a vertical axis, co-operating with blades or stirrers with driven stirrers with several stirrer shafts
-
- 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
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/235—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids for making foam
- B01F23/2351—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids for making foam using driven stirrers
-
- 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
- B01F27/85—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with two or more stirrers on separate shafts
-
- 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
- B01F27/96—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with openwork frames or cages
-
- 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
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F35/32—Driving arrangements
- B01F35/323—Driving arrangements for vertical stirrer shafts
- B01F35/3231—Driving several stirrer shafts, e.g. about the same axis
-
- 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
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F35/33—Transmissions; Means for modifying the speed or direction of rotation
- B01F35/332—Transmissions; Means for modifying the speed or direction of rotation alternately changing the direction of rotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/38—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions wherein the mixing is effected both by the action of a fluid and by directly-acting driven mechanical means, e.g. stirring means ; Producing cellular concrete
- B28C5/381—Producing cellular concrete
- B28C5/383—Producing cellular concrete comprising stirrers to effect the mixing
-
- 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
- B01F27/23—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis
- B01F27/232—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with two or more rotation axes
- B01F27/2322—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with two or more rotation axes with parallel axes
Definitions
- the invention relates to a device for foaming a slurry of sand, water and a hydraulic binder with the addition of a foaming agent with a cylindrical container for receiving the slurry and with respect to the container to the container axis rotating agitator.
- the invention is therefore based on the object, a device for foaming a slurry of sand, water and a hydraulic binder with the addition of a foaming agent of the type described in such a way that a uniform foaming of the sludge with a minimum pore content of 80 vol.% can be ensured.
- the invention solves the problem set by the fact that the agitator has distributed over the container cross-section stirring units, each consisting of a parallel to the container axis rotor with distributed over the circumference, axially parallel stirring bars between frontal holders and are alternately driven in opposite directions.
- the diameter of the stirring rods determines the size of the registered air bubbles and thus the subsequent pores decisive.
- the subsequent pore size can be specified, with thinner stirring rods finer air bubbles and coarser stirring rods cause larger air bubbles.
- the rotational speed of the stirring bars of the individual stirring units has an immediate effect on the rate of air introduced into the sludge and thus on the pore content.
- Air may be introduced in an amount that makes up at least 80 vol.% Of the foamed sludge, under a uniform distribution of air bubbles whose size depends essentially on the diameter of the stirring rods used.
- the foam structure of the foamed slurry is sufficiently stable until the setting of the hydraulic binder within the slurry inhibits collapse of the foam under normal ambient conditions without the supply of additional thermal energy, which, of course, can be added to accelerate setting.
- the rotors may have drive shafts, which are drive-connected at least in groups via intermeshing gears.
- the intermeshing gears of adjacent rotors ensure the opposite direction of rotation of adjacent stirring units.
- the holders for the stirring rods can sit on the drive shafts of the stirring units, wherein the stirring rods of the stirring units surround the respective drive shaft in at least one concentric pitch circle. If the stirring bars are arranged in two or more pitch circles, it is advisable to offset the stirring bars of the individual pitch circles from one another with respect to the stirring bars of adjacent pitch circles, which permits a more uniform introduction of air into the slurry under good conveying conditions for the sludge.
- FIG. 1 shows a device according to the invention for foaming a slurry in a simplified axial section
- Fig. 2 shows this device in a plan view
- FIG. 3 shows a stirring unit in an axial section on a larger scale and FIG. 4 shows this stirring unit in a section along the line IV-IV of FIG. 3.
- the illustrated apparatus for foaming a slurry has a frame 1, in which a cylindrical container 2 for receiving the foaming slurry is rotatably mounted about the container axis.
- the frame 1 forms a support ring 3, in which the container 2 is mounted.
- rollers 4 are provided on where the container 2 rests over an edge flange 5.
- a device 6 for discharging the foamed sludge for example in the form of a discharge slide is provided.
- an agitator 7 which is mounted in a guide columns 8 vertically adjustable slide 9 and consists of a plurality of stirring units 10.
- These stirring units 10 form rotors parallel to the container axis, which according to FIGS. 3 and 4 respectively consist of a drive shaft 11, on which disc-shaped holders 12 and 13 sit, between which axially parallel stirring rods 14 are arranged.
- These stirring rods 14, which are preferably formed of wires tensioned between the holders 12 and 13, are evenly distributed in concentric pitch circles about the drive shafts 11.
- stirring bars 14 Since the volume of air introduced via these stirring units 10 depends not only on the rotational speed of the stirring bars 14 but also on their number, it is advisable to arrange the stirring bars in at least two concentric pitch circles for higher feed rates, especially since the rotational speed of the stirring bars 14 is due to the sludge to be foamed acting centrifugal forces is limited. In the arrangement of stirring bars 14 in two pitch circles, the stirring bars 14 of the two pitch circles are staggered against each other, as shown in FIG. 4 can be removed to ensure a uniform air entry.
- the stirring units 10 protrude with the lower holders 13 into the bottom region of the container 2, the holder 13 can be expected to wear out accordingly.
- the lower holder 13 can be covered with replaceable wear plates 15, which are bolted to the shaft 11 as shown in FIG.
- the stirring units 10 are rotatably mounted in the carriage 9 and carry on the above the carriage 9 upwardly projecting ends gears 16.
- the arrangement is made such that the gears 16 of adjacent drive shafts 11 of the grouped together in groups Rownismeen 10 mesh with each other, so that the stirring units 1 of each group are alternately driven in opposite directions.
- the drive itself takes place via a motor 17, which via a to the container axis coaxial gear 18 drives the gears 16 of the respective innermost stirring units 10 of the individual group of stirring units.
- the central gear 18 may be connected to a stirring unit 10.
- the gears 16 are arranged in an oil-filled gear tray 19 to ensure a simple lubrication for the gears 16.
- the motor 17 is supported on a support 20 bridging the transmission trough 19.
- the carriage 9 is penetrated by a hopper 21, which is provided between two groups of stirring units 10 and projects through the transmission pan 19 ,
- the slurry to be treated is filled through the hopper 21 into the container 2, for example, from 170 to 260 kg of a fine-grained sand powder, 30 to 50 kg of sand with an average grain size between 70 to 200 microns and a maximum grain size to 1 mm and 90 up to 150 kg of cement is mixed with the addition of 120 to 200 l of water.
- a treatment of the sludge by means of the agitator 7, which is turned on for this purpose for a period of, for example, 1 to 3 minutes is recommended.
- the rotary drive of the container 2 is effected by a motor 22, which drives a meshing with a container 2 ring gear 23 meshing pinion and can be reversed in its direction of rotation.
- the actual foaming process takes place after the addition of the foaming agent, which consists according to the embodiment of a dissolved in an amount of 2.8 to 4.5 I in 110 to 170 I of water ionic surfactant.
- the mixed with the aqueous foaming agent sludge is then foamed by means of the agitator, wherein the container 2 alternately reverses its direction of rotation. After a treatment time of between 3 and 10 minutes, air is introduced into the sludge and this is foamed with fine pores. In order to stabilize the foamed sludge, the stirring process may be continued for a period of 2 to 5 minutes, preferably at a lower circulation speed of the agitated slurry. units 10. This aftertreatment has the purpose of improving the uniformity of the pore distribution over the volume of the foamed sludge. Subsequently, the foamed sludge can be discharged via the discharge device 6 from the container 2 and poured for curing in trough-shaped troughs.
- stirring rods 14 determine the pore size, so that a certain pore structure can be ensured by the choice of the thickness of the stirring rods 14.
- stirring rods 14 are used with a diameter between 1 and 4 mm.
- the rotational speed and the number of stirring rods 14 affect the registered air volume, the circulation speed, however, are limited due to the centrifugal force on the sludge mecanicSumende limits to expel not already registered air again.
- the pitch circle diameter for the stirring bars 14 are in the range between 20 and 150 mm.
- the number of revolutions of the stirring units 10 is usually 10 to 45 revolutions per second.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Treatment Of Sludge (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Lubricants (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT04732870T ATE338581T1 (de) | 2003-05-27 | 2004-05-14 | Vorrichtung zum aufschäumen einer schlämme |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0081503A ATA8152003A (de) | 2003-05-27 | 2003-05-27 | Vorrichtung zum aufschäumen einer schlämme |
PCT/AT2004/000170 WO2004105924A1 (de) | 2003-05-27 | 2004-05-14 | Vorrichtung zum aufschäumen einer schlämme |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1644106A1 true EP1644106A1 (de) | 2006-04-12 |
EP1644106B1 EP1644106B1 (de) | 2006-09-06 |
Family
ID=31892553
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04732870A Expired - Lifetime EP1644106B1 (de) | 2003-05-27 | 2004-05-14 | Vorrichtung zum aufschäumen einer schlämme |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070008813A1 (de) |
EP (1) | EP1644106B1 (de) |
AT (2) | ATA8152003A (de) |
DE (1) | DE502004001434D1 (de) |
RU (1) | RU2005140667A (de) |
WO (1) | WO2004105924A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112495244A (zh) * | 2020-11-02 | 2021-03-16 | 中创科技孵化器泰州有限公司 | 一种新材料加工用双向旋转搅拌装置 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10189180B2 (en) | 2014-01-15 | 2019-01-29 | United States Gypsum Company | Foam injection system with variable port inserts for slurry mixing and dispensing apparatus |
GB2527048B (en) * | 2014-06-09 | 2018-03-07 | Anaero Tech Ltd | Static batch reactor system |
CN111249942B (zh) * | 2020-03-12 | 2022-05-27 | 湖南三一快而居住宅工业有限公司 | 搅拌池 |
CN112277181B (zh) * | 2020-09-02 | 2021-12-14 | 安徽丰运高分子材料有限公司 | 一种间歇性进料的密炼机及其工作方法 |
CN114130241A (zh) * | 2021-12-07 | 2022-03-04 | 枣庄市昌恒台装饰新材料科技有限公司 | 一种运用在生产食品包装纸的纸浆搅拌装置 |
CN114470807B (zh) * | 2021-12-08 | 2024-09-06 | 深圳传世生物医疗有限公司 | 一种物体运动姿态调整设备以及穿刺加液混匀系统 |
CN114888964B (zh) * | 2022-05-19 | 2024-05-10 | 江西工业贸易职业技术学院 | 一种透水混凝土施工制料用混凝土搅拌机 |
CN118546754B (zh) * | 2024-07-29 | 2024-10-15 | 河南科技学院 | 一种饲料发酵设备及发酵工艺 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1929470A (en) * | 1931-05-23 | 1933-10-10 | United States Gypsum Co | Foam cell |
DE1949298B2 (de) * | 1969-09-30 | 1972-03-02 | Hermann Sohn KG, 4000 Dusseldorf | Vorrichtung zum mischen von trockenem bis pastoesem mischgut |
US4132484A (en) * | 1974-06-11 | 1979-01-02 | Hans Kimmel | Mixer, particularly heating-cooling mixer for chemical processes |
US4176970A (en) * | 1975-12-08 | 1979-12-04 | Kraft, Inc. | Dasher |
DE3520040A1 (de) * | 1985-06-04 | 1986-12-04 | Herfeld, Friedrich Walter, Dr., 5982 Neuenrade | Vorrichtung zum mischen von gut |
ATE115890T1 (de) * | 1990-01-04 | 1995-01-15 | Bohle L B Pharmatech Gmbh | Mischgranulator. |
US5549384A (en) * | 1995-05-15 | 1996-08-27 | Reynolds; Augustus T. | Mixer with helically extending blades |
US5697703A (en) * | 1996-12-27 | 1997-12-16 | Dedoes Industries, Inc. | Reciprocal drive mechanism for automatic paint stirring equipment |
-
2003
- 2003-05-27 AT AT0081503A patent/ATA8152003A/de unknown
-
2004
- 2004-05-14 DE DE502004001434T patent/DE502004001434D1/de not_active Expired - Fee Related
- 2004-05-14 WO PCT/AT2004/000170 patent/WO2004105924A1/de active IP Right Grant
- 2004-05-14 RU RU2005140667/15A patent/RU2005140667A/ru not_active Application Discontinuation
- 2004-05-14 EP EP04732870A patent/EP1644106B1/de not_active Expired - Lifetime
- 2004-05-14 US US10/558,309 patent/US20070008813A1/en not_active Abandoned
- 2004-05-14 AT AT04732870T patent/ATE338581T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2004105924A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112495244A (zh) * | 2020-11-02 | 2021-03-16 | 中创科技孵化器泰州有限公司 | 一种新材料加工用双向旋转搅拌装置 |
Also Published As
Publication number | Publication date |
---|---|
WO2004105924A1 (de) | 2004-12-09 |
DE502004001434D1 (de) | 2006-10-19 |
ATE338581T1 (de) | 2006-09-15 |
ATA8152003A (de) | 2004-03-15 |
RU2005140667A (ru) | 2006-06-10 |
WO2004105924A8 (de) | 2006-04-20 |
US20070008813A1 (en) | 2007-01-11 |
EP1644106B1 (de) | 2006-09-06 |
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