EP1311340A1 - Vorrichtung und verfahren zum mischen von komponenten - Google Patents
Vorrichtung und verfahren zum mischen von komponentenInfo
- Publication number
- EP1311340A1 EP1311340A1 EP01980262A EP01980262A EP1311340A1 EP 1311340 A1 EP1311340 A1 EP 1311340A1 EP 01980262 A EP01980262 A EP 01980262A EP 01980262 A EP01980262 A EP 01980262A EP 1311340 A1 EP1311340 A1 EP 1311340A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixing
- conveying
- inlet
- outlet opening
- outlet
- 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.)
- Withdrawn
Links
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
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
- B01F27/701—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers
-
- 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
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/72—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices
- B01F27/726—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with two helices with opposite pitch on the same shaft; with two helices on the same axis, driven in opposite directions or at different speeds
-
- 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
- B01F35/90—Heating or cooling systems
- B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
Definitions
- the invention relates to a device and a method for mixing at least two components according to the preamble of claim 1 and the preamble of claim 12.
- Devices of the type mentioned are used, for example, in the food and pharmaceutical sectors, but also for sewage sludge or other difficult-to-mix components from a wide variety of sectors. Become frequent
- L so-called double-shaft trough mixers are used, in which two shafts mounted parallel to each other promote and simultaneously mix the substances introduced into a trough. Because the two shafts run in opposite directions, the components to be mixed circulate in a mixing room. Typically, the mix is passed through about 10 to 15 such cycles before it leaves the mixing space from the discharge opening. The number of runs varies considerably depending on the components to be mixed.
- partition walls in the mixing room, as a result of which individual, smaller mixing rooms are formed and the material to be mixed does not pass into the next mixing room until a certain degree has been mixed.
- the mix increases the risk of flaking or other defects in the mix (for example in the case of tablets).
- the openings of the intermediate walls which are advantageously closable, are exposed to contamination and are difficult to close clean, especially if there are increased hygienic requirements, e.g. in the food or pharmaceutical sector.
- the invention is based on the problem of enabling effective mixing of components while avoiding the disadvantages mentioned.
- a continuous mixing space can therefore be used, in which several flows of mixed material are nevertheless caused by the varying conveying directions of the at least two mixing tools.
- openings that can be closed with sliders or similar parts that are sensitive to contamination are unnecessary.
- partition walls are generally unnecessary, so that damage to mixed walls, such as tablets, is avoided on partition walls.
- the regions of the respective mixing tool conveying in the outlet and in the inlet direction are particularly advantageously arranged alternately one behind the other, which results in a regularity of the flows of the mixture.
- a particularly favorable design of a plurality of circuits is obtained if, in the border area between the partial areas of a mixing tool which convey in the outlet and in the inlet direction, the mixture is cross-conveyed for supply to the further mixing and conveying tool, and the material mixed there is in each case partly counter to the first mixing tool is promoted.
- mixed material conveyed from the first section in the direction of the outlet opening is then conveyed transversely towards the second mixing and conveying tool when the second section, in which mixing and conveying elements conveying in the opposite direction are active, which transports the mixed material picked up into one Reverse flow to form a first circuit and on the other hand divided into a second, forward-looking stream to form a second, counter-current circuit.
- Such a method can be implemented with two horizontally extending shaft bodies which are arranged next to one another and covered with mixing and conveying elements pointing in opposite directions.
- Rotating bodies rotating about vertical axes are also generally suitable for the formation of suitable mixing and conveying tools.
- Simultaneous drying of the material introduced into the mixing room to increase the dry matter content can be achieved if the device is assigned a heating device.
- This can have heating channels in a particularly favorable manner, in which, for example, an oil or another heating liquid circulates, which are adapted to the walls which delimit the mixing space on the underside.
- a very high heating surface is achieved that there is an effective application of heat to the mixing room and therefore the residence time of the material to be mixed in the mixing room can be kept short.
- a particularly advantageous embodiment results when a plurality of parallel shafts are mounted next to one another and the mixing space thus comprises a plurality of adjacent areas in which material is mixed.
- the areas can be separated from one another or connected to one another.
- FIG. 1 is a plan view of a mixing device according to the invention
- FIG. 2 is a side view of the device of FIG. 1,
- FIG. 4 shows an alternative design of mixing and conveying members in a view similar to FIG. 1,
- Fig. 5 is a schematic view of different promotional items
- FIG. 1 Partial areas of the mixing and conveying tools according to FIG. 1, Fig. 6 is a schematic plan view of the mixed material flows in the
- FIG. 7 is a view similar to FIG. 1 of a device having several mixing rooms
- FIG. 8 shows a section along the line VIII-VIII in FIG. 7 with the heating channels drawn in for the passage of a heating medium and with an end cover on the top for the pressure-tight design of the mixing space.
- the device 1 according to FIG. 1 comprises at least one mixing space 2, which is free of inner transverse walls and is only delimited by outer walls 3, 4 or an intermediate wall 32 to form another mixing space 2.
- the or each mixing chamber 2 has an inlet opening 5 at one end, which can also be formed, for example, by an insertion channel pointing from above into the open mixing chamber 2, spaced apart from it and, in the exemplary embodiment, there is an outlet opening 6 for discharging the mixed material.
- the device 1 In its mixing chamber 2, the device 1 comprises two shafts 7, 8 arranged in parallel next to one another, which can be rotated via drives 9, 10. In the parallel arrangement shown in FIGS. 7 and 8 of two mixing spaces next to one another, which are separated from one another by an intermediate wall 32, two pairs of shafts 7, 8, which are parallel to the intermediate wall 32, are provided.
- the shafts 7, 8 serve as carriers for mixing elements 11 and conveying elements 12 (only indicated in FIGS. 1 and 7).
- mixing and conveying members are structurally formed together by a spiral conveyor 13, also only indicated in the drawing.
- the shafts 7, 8 have a direction of rotation that is uniform over the entire extent of the mixing space 2, which is not mandatory.
- deflection gears can also be provided within the course of a respective shaft 7, 8.
- the continuous direction of rotation is particularly simple to implement.
- Intermediate bearings of the shafts 7, 8 within the mixing space 2 can also be dispensed with.
- Shafts 7 and 8 rotate in opposite directions 15, 16.
- Each of the shafts 7, 8 has different sections 7a, 7b, 7c and 8a, 8b, 8c on their way between the area of the inlet opening 5 and the outlet opening 6.
- sections 7a and 7c delivery is carried out in the direction of the outlet opening 6, in section 7b, on the other hand, in the direction of the inlet opening 5.
- the shaft 8 in sections 8a and 8c delivers in the direction of the inlet opening 5, in section 8b in the direction of the outlet opening 6. This is illustrated by the arrows 39a, 39b, 39c and 40a, 40b, 40c indicating the conveying direction.
- the conveying members 12 or 13 are arranged in sections in different orientations with respect to the shaft 7 or 8.
- the conveyor members 12a and 13a are arranged such that they support the shaft 7 rotating in the direction of rotation 15 Effect the mix in the direction of arrow 39a.
- the middle conveying members 12b, 13b are arranged on the shaft 7 in an opposite conveying manner, which results in a conveying direction 39b oriented in the direction of the inlet opening 5 in this section.
- the conveying members 12, 13 can each be of the same design, or it can be provided that one or more conveying members 12, in the end region of a respective section a, b, c in the conveying direction 39a, 39b, 39c or 40a, 40b, 40c. 13 are provided with a specially designed cross conveyor in order to be able to ensure a respective mixed material cycle 20, 21, 22 (FIG.
- a mixed material flow is divided into a portion 24 remaining in the circuit 20 and a portion 25 which is transferred to the next section b, the portion 24 being shown in the direction of arrow 40a. is promoted and remains in section a, while the portion 25 is conveyed in the direction of arrow 40b and reaches section b as part of the circuit 21.
- this portion 25 abuts the counter-rotating conveying portion c of the shaft 8, so that it is no longer conveyed in the direction of the outlet opening 6, but rather undergoes a transverse conveyance 27 and is in turn split into the components 28 and 29, the portion 28 remains in section b and is gripped by the first shaft 7 in its returning direction 39b, while the portion 29 penetrates into the third circuit 22 and is gripped there by the shaft 7 running in the direction 39c.
- Essentially semitubular boundary walls 31, which delimit the circulation space for the mixing and conveying members 11, 12 of the shafts 7, 8 serve as guide surfaces for the mixed material. The close contact of the mixing and conveying members 11, 12 against these walls 31 ensures that no mix remains undisturbed and unmixed in the floor area.
- the device 1 can be arranged overall on a base frame and can be pivoted or swiveled relative to it in such a way that the material to be mixed has to start up against an incline on its way from the inlet opening 5 to the outlet opening 6 or runs with gradient support. This can be particularly useful when mixing components, at least one of which is formed by a liquid. An inclination of the mixing chamber 2 can also be beneficial for cleaning.
- the device 1 can be assigned a heating device 33 which comprises heating channels 34.
- the heating channels 34 run essentially over the entire surface in order to achieve a large contact area, the boundary walls 31 closing the mixing space 2 downwards. Since the heating channels 34 extend into the lateral area, good heat transfer from them to the boundary walls 31 and the goods located in the mixing room 2 are guaranteed.
- the heated area is larger than would correspond to a flat area.
- water, steam or various thermal oils are suitable as heating means.
- the heating temperature is typically around 180 ° C to 200 ° C. However, this can vary.
- Drying is required, for example, for foods from which the water is to be extracted. Drying can also take place with sewage sludge or the like. Depending on the residence time of the material in the mixing room 2, the dry matter content can be increased considerably. For example, the so-called TS content can be increased from 60% to 90% after a ten-minute residence time and from 90% to 98% after half an hour.
- a pump device 35 can be provided in order to apply a negative pressure to the mixing chamber 2.
- the boiling temperature of the water contained in the mix can be reduced as a result. Pressures until a fine vacuum is reached are common.
- Rotary lobe pumps or rotary lobe pumps, for example water ring pumps, can be used for this purpose.
- a cover 35 which also keeps the mixing space 2 pressure-tight upwards, is designed in a convex shape.
- a lock for filling and discharging the mixed material for example a cellular wheel lock or a chamber lock.
- the formation of several mixing rooms 2 in parallel or series connection can be more energy efficient than a large mixing room. It can also be a Good passage between the adjacent mixing rooms in area 36 (FIG. 7) may be provided so that the circuits of the different mixing rooms 2 are completely run through by the mixing material and the mixing material is not mixed in only one chamber 2 at a time.
- a cross-conveyor screw or similar cross-conveying means can be provided, for example, in the region 36. This would then cause a transfer of material between the adjacent mixing spaces 2 parallel to the arrows 30 shown.
- a back pressure can be set by controlling the degree of opening of the outlet opening 6, with the aid of which the progress of the mixing material in the mixing chamber 2 can be influenced. As a result, continuous operation is particularly favored.
- the back pressure can be used to ensure, for example, how long new mix to be filled is in the first section a, when it passes into the second section b and into the third section c or into further sections.
- the mixing behavior can be very sensitively influenced solely by controlling a valve. For example, with the outlet valve 6 closed, the remaining material can be set in such a way that it passes through the first circuit 20 twice and only then passes into the second circuit 21. With the outlet valve 6 open, however, the transition would also be possible during the first circulation in the circuit 20.
- the shaft diameters of the shafts 7, 8 can also be reduced for better use of space, for example from a normal dimension of 225 mm to 100 mm.
- the device 1 thus shows a mixing behavior which can be specifically adjusted and finely metered via an outlet valve 6 in continuous operation with simultaneous drying possibility.
- Granulation of alumina is also possible, for example. This forms solid lumps that cannot be used in this way. The lumps must therefore be crushed and granulated in the mixer. This can be achieved by adding about 3 - 5% lime during mixing. As a result, the clay is disrupted, which prevents clumping. Disposal in the landfill is therefore unnecessary. The granules formed can be reused. Such a method is also possible with silt or the like.
- Cooling is required for other materials, such as aluminum sulfate.
- the sulfate is delivered in tank wagons at a temperature of around 55 ° C.
- a clumping can then only be achieved by cooling, for which water is added to the mixer.
- the heat of vaporization then leads to cooling. Evaporation can be promoted by applying negative pressure to the mix.
- the mixed good is forced into the cycle and conveyed by the mixing and conveying elements.
- the amount of the material to be mixed is opposed to any pressing of the material Direction of conveyance of the conveying members increased considerably. This is the only way to achieve a continuous and fast mixing.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Accessories For Mixers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10041552 | 2000-08-24 | ||
DE10041552A DE10041552A1 (de) | 2000-08-24 | 2000-08-24 | Vorrichtung und Verfahren zum Mischen von Komponenten |
DE20106164U | 2001-04-07 | ||
DE20106164U DE20106164U1 (de) | 2000-08-24 | 2001-04-07 | Vorrichtung zum Mischen von Komponenten |
PCT/EP2001/009719 WO2002016016A1 (de) | 2000-08-24 | 2001-08-22 | Vorrichtung und verfahren zum mischen von komponenten |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1311340A1 true EP1311340A1 (de) | 2003-05-21 |
Family
ID=26006800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01980262A Withdrawn EP1311340A1 (de) | 2000-08-24 | 2001-08-22 | Vorrichtung und verfahren zum mischen von komponenten |
Country Status (4)
Country | Link |
---|---|
US (1) | US20030161215A1 (de) |
EP (1) | EP1311340A1 (de) |
AU (1) | AU2002212150A1 (de) |
WO (1) | WO2002016016A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITVI20040226A1 (it) * | 2004-09-24 | 2004-12-24 | Peron Srl Unipersonale | Dispositivo e macchina per lo stoccaggio e o il trasporto di un prodotto per la realizzazione di sottofondi per pavimentazione |
DE602006014528D1 (de) * | 2005-04-18 | 2010-07-08 | Gea Pharma Systems Nv | Vorrichtung zur durchgehenden granulierung und verfahren zur durchgehenden granulierung von pulvermaterial |
NL1029273C2 (nl) * | 2005-06-17 | 2006-12-19 | Sotec Beheer B V | Inrichtingen en werkwijzen voor het mengen en/of kneden van voedingsmiddelen. |
US8123394B2 (en) * | 2005-10-17 | 2012-02-28 | Evonik Degussa Gmbh | Mixer for liquid colorants and method for mixing liquid colorants |
US9610552B2 (en) * | 2007-10-02 | 2017-04-04 | Shin Nichinan Co., Ltd. | Kneading apparatus with rotary shafts having stirring members and side blocking plates extending above shafts |
US8770825B2 (en) * | 2007-10-02 | 2014-07-08 | Shin Nichinan Co., Ltd. | Kneading apparatus with rotary shafts having stirring members |
GB201114291D0 (en) * | 2011-08-19 | 2011-10-05 | Axis ltd | Mooring system |
JP2016006371A (ja) * | 2014-05-26 | 2016-01-14 | 水ing株式会社 | 乾燥装置及び乾燥システム |
CN105276958A (zh) * | 2014-05-26 | 2016-01-27 | 水翼株式会社 | 干燥装置以及干燥*** |
CN109966899B (zh) * | 2019-05-07 | 2024-01-26 | 华能国际电力股份有限公司 | 一种实现煤粉锅炉烟气高效sncr脱硝的槽式混合器装置 |
CN111603976A (zh) * | 2020-06-01 | 2020-09-01 | 吴仲飞 | 一种食品加工用复合拌料装置 |
CN113858431A (zh) * | 2021-09-13 | 2021-12-31 | 河南强耐新材股份有限公司 | 一种双轴双筒制浆装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1673085A (en) * | 1926-08-04 | 1928-06-12 | Evarts G Loomis | Vacuum mixing machine |
US1727992A (en) * | 1928-03-03 | 1929-09-10 | John J King | Mortar mixer |
FR1358019A (fr) * | 1963-05-22 | 1964-04-10 | Vickers Armstrongs Ltd | Appareil pour le traitement de matières liquides, semi-liquides ou granulaires |
US3797807A (en) * | 1971-09-13 | 1974-03-19 | Creston Mfg Co Inc | Material mixer |
DE2534388C2 (de) * | 1975-08-01 | 1980-01-03 | Ulrich 6100 Darmstadt-Eberstadt Krause | Mischer zum Herstellen von Schlämmen |
GB2085741A (en) * | 1980-10-18 | 1982-05-06 | Hargreaves Ind Services Ltd | A machine for the treatment of wet particulate materials |
DE3144305C2 (de) * | 1981-11-07 | 1987-05-07 | Rietbergwerke Gmbh & Co Kg, 4835 Rietberg | Vorrichtung zum Mischen von körnigem oder pulverförmigem Material |
US5083506A (en) * | 1991-03-06 | 1992-01-28 | Blentech Corporation | Continuous compartmented mixer |
-
2001
- 2001-08-22 AU AU2002212150A patent/AU2002212150A1/en not_active Abandoned
- 2001-08-22 WO PCT/EP2001/009719 patent/WO2002016016A1/de not_active Application Discontinuation
- 2001-08-22 EP EP01980262A patent/EP1311340A1/de not_active Withdrawn
-
2003
- 2003-02-24 US US10/248,837 patent/US20030161215A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO0216016A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2002016016A1 (de) | 2002-02-28 |
AU2002212150A1 (en) | 2002-03-04 |
US20030161215A1 (en) | 2003-08-28 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20030330 |
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AK | Designated contracting states |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LUTZER, FRANK Inventor name: HINKEN, FRANZ-JOSEF |
|
R17P | Request for examination filed (corrected) |
Effective date: 20030320 |
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17Q | First examination report despatched |
Effective date: 20041028 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20050301 |