EP0125392B1 - Mischer - Google Patents

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Publication number
EP0125392B1
EP0125392B1 EP84101353A EP84101353A EP0125392B1 EP 0125392 B1 EP0125392 B1 EP 0125392B1 EP 84101353 A EP84101353 A EP 84101353A EP 84101353 A EP84101353 A EP 84101353A EP 0125392 B1 EP0125392 B1 EP 0125392B1
Authority
EP
European Patent Office
Prior art keywords
mixer according
vessel
screw conveyor
wheel
screw
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.)
Expired
Application number
EP84101353A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0125392A2 (de
EP0125392A3 (en
Inventor
Joachim Rudolph
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Werner and Pfleiderer GmbH
Original Assignee
Werner and Pfleiderer GmbH
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 Werner and Pfleiderer GmbH filed Critical Werner and Pfleiderer GmbH
Publication of EP0125392A2 publication Critical patent/EP0125392A2/de
Publication of EP0125392A3 publication Critical patent/EP0125392A3/de
Application granted granted Critical
Publication of EP0125392B1 publication Critical patent/EP0125392B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F29/00—Mixers with rotating receptacles
    • B01F29/80—Mixers with rotating receptacles rotating about a substantially vertical axis

Definitions

  • the invention is directed to a mixer according to the preamble of claim 1.
  • Such mixers known from DE-OS 31 10 437 are e.g. B. upstream of an extruder. They permit a discontinuous addition of at least one mixture component, which is desirable for reasons of cost, and at the same time the feeding of a continuously working metering screw of the extruder while achieving a high degree of homogeneity of the mixture.
  • Such a continuous discharge of the mix is required, for example, if the mix consists of a main mix component, such as plastic granules, and various, small-weight mix components, such as. B. color additives, stabilizers and the like to be fed to the downstream extruder.
  • the invention is based on the object of designing a mixer in accordance with the preamble of claim 1 in such a way that homogenization and preparation, including the setting of a desired pre-temperature, which is optimally tailored to the specific mix can be achieved, with addition of the mix components in each mixing phase, i.e. H. if necessary, it should also be possible to continuously feed individual mix components.
  • a mixer according to the characterizing part of claim 1. makes it possible to adjust the rotational speed of the container, on the one hand, and the conveyor screw lying parallel to the container wall, on the other hand, in such a way that a quasi particularly well-adapted to the respective requirements stationary mix distribution along the longitudinal axis of the container is achieved, with a defined introduction of energy taking place at the same time.
  • feed openings can be arranged outside the immediate working area of the screw conveyor, the addition of mix components is possible at any time without the risk of clumping due to an addition in the immediate vicinity the screw conveyor would be feared.
  • the embodiment according to claim 2 makes it possible for both the central mixing device and the screw conveyor to extend very deep into the mixing container and for the entire width of the mixing container to be largely covered either by the screw conveyor or central mixing device.
  • Claims 4 and 5 describe an embodiment of the screw conveyor, which makes it particularly simple and therefore inexpensive to manufacture compared to the embodiments known from the prior art.
  • an additional screw helix can also be provided there according to claim 7.
  • the spiral suction mixing wheel on the central mixing device which is designed according to claims 9 to 11, ensures that the metered individual components do not reach the homogenization zone of the mixer, but that the components added are roughly mixed in the area above the spiral suction mixing wheel , d. H. the mix is evened out here. Due to the blades of the spiral suction mixing wheel set at preferably 15 °, the mix is thrown upwards and against the container wall 11.
  • the wear pins provided according to claim 11 are used to break up agglomerates or, in particular, to rub pigment, thereby producing a painting effect.
  • a homogenization zone is created below the blocking zone formed by the spiral suction mixing wheel, in which an intensive mixing of the material to be mixed is made possible.
  • screw turns are also provided on the axis of the central mixing device, which feed the product from the discharge area to the homogenizing vortex wheel in partial quantities.
  • the strong inclination of the mixing blades of the homogenizing vortex wheel serves to achieve the desired mixing effect on the one hand and on the other hand in particular to introduce energy.
  • the blocking effect in the area of the blocking zone can be increased further by the blocking plates arranged there according to claim 13, in that these plates cover in the horizontal direction those regions which are not detected by the central mixing device or by the screw conveyor.
  • the measure according to claim 16 makes it possible to set a desired preheating of the material to be mixed and to maintain it by a suitable speed setting. This possibility is based on the interaction according to the invention of the rotation of the container and the movement of the central mixing device and the mixing screw.
  • the measure according to claim 17 ensures that no deposits occur on the top of the container at the other transition to the container lid and the container is reliably guided relative to the lid.
  • a mixer according to the invention shown in FIG. 1 is a so-called cone mixer, i. H.
  • the mixer has a container 1 which has the shape of a cone standing on its tip.
  • the container 1 is rotatably mounted on a mixer frame 2, the pivot bearing 3 being particularly apparent from FIG. 6.
  • the fixed part of the pivot bearing 3 is screwed to a cross member 4 of the frame 2.
  • the container 1 is covered by a fixed lid 5.
  • a slide-sealing bearing 6 is formed, a guide ring 7 being provided on the inside of the container 1 in the region of this bearing 6, which prevents the deposit of mixed material in this region.
  • the container 1 is designed to be driven in rotation.
  • the axis 12 of a screw conveyor 13 runs parallel to the side wall 11 of the container 1, the screw shaft 14 of which is led out through the cover 5 via a bearing 15 and is driven by a drive motor 16 with an associated control device (not shown in detail).
  • the screw shaft 14 is tapered and the screw spiral 17 is held in this area by retaining pins 17 'at the distance predetermined by the upper area.
  • the outer and inner diameter of the screw helix 17 accordingly remains constant over the entire length.
  • the screw conveyor 13 extends into the fixed discharge inlet 18, as a result of which intensive, final mixing is achieved in this area.
  • the central axis 20 of a central mixing device 21 is arranged offset from the central axis 19 of the container 1 by the distance Y.
  • the shaft 22 of the central mixing device is driven by a drive motor 23 with an associated control device, not shown in detail.
  • a spiral suction mixing wheel 24 is provided on the shaft 22 of the mixing device 21.
  • the spiral suction mixing wheel 24 has three blades 25, which are provided with flared ends 26, through which the material to be mixed is thrown obliquely upwards.
  • a wear pin 27 is provided approximately in the middle of the wings, which is used to break up agglomerates.
  • the diameter of the spiral suction mixing wheel 24 is dimensioned such that it extends practically from the outside of the shaft 14 of the screw conveyor 13 to the opposite container wall 11 of the container 1.
  • a homogenizing vortex wheel 28 is provided below and at a distance from the spiral suction mixing wheel 24.
  • the homogenizing vortex wheel 28 is provided with four vanes 29, which also have employed ends 29 'for spinning on the mixed material. At the same time, due to this relatively strong setting, energy will be supplied to the mix with the homogenizing vortex wheel.
  • inlet openings 31 are provided in the cover, which are outside the working range of the screw conveyor 13. I.e. Mixture components can be added through these inlet openings 31 in every operating phase of the mixer, without the fear of the formation of clumps below the inlet openings 31.
  • the discharge device 32 comprises, as can be seen in particular from FIGS. 5 and 6, two screws 33 which are arranged in a casing 34 and are driven by a drive device 35.
  • a rotational speed of 0.6 to 6 rpm is selected for the container 1, a rotational speed of 15 to 80 rpm for the screw conveyor 13 and a rotational speed of 200 to 1200 rpm for the mixing device 21.
  • Through the inlet openings 31 z. B. added at intervals of 1 to 10 minutes of mix components. These first reach the area above the spiral suction mixing wheel 24, which forms a premixing or homogenizing zone. Mixing is carried out here so that even with discontinuous product addition, a degree of homogeneity is achieved which corresponds to that of continuous product addition.
  • the blocking zone formed at the level of the spiral suction mixing wheel 24, which arises from the fact that the spiral suction mixing wheel 24 comes close to the shaft 14 of the screw 13 due to the recess in the screw spiral, prevents unmixed product from reaching the discharge zone.
  • the mixed mix passes essentially down through the space between the container wall 11, the spiral suction mixing wheel 24 and the screw conveyor 13.
  • the mixture is intensively mixed in the homogenization zone between the spiral suction mixing wheel 24 and the homogenizing vortex wheel 28, the material being thrown upwards again and again by the vanes 29 or the ends 29 'of the homogenizing vortex wheel 28 that are set up.
  • the mixing device 21 thus acts like a fluid mixer.
  • the screw spiral 30 conveys a partial quantity from the discharge area upwards into the homogenization zone, as a result of which an even distribution of the product is achieved.
  • the processed mix passes through the discharge inlet 18 into the conveying area of the twin-screw discharge device 32 and can thus be fed to an extruder without loss of temperature and thus energy.
  • the blocking zone formed at the height of the spiral suction mixing wheel 24 is completed even more intensely if locking plates 36 are arranged at this height, which close the area not covered by the spiral suction mixing wheel 24 or the screw 13, as can be seen in particular from FIG. 2.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
EP84101353A 1983-04-22 1984-02-10 Mischer Expired EP0125392B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3314727A DE3314727C2 (de) 1983-04-22 1983-04-22 Mischer
DE3314727 1983-04-22

Publications (3)

Publication Number Publication Date
EP0125392A2 EP0125392A2 (de) 1984-11-21
EP0125392A3 EP0125392A3 (en) 1984-12-19
EP0125392B1 true EP0125392B1 (de) 1986-06-25

Family

ID=6197147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101353A Expired EP0125392B1 (de) 1983-04-22 1984-02-10 Mischer

Country Status (4)

Country Link
EP (1) EP0125392B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS59199026A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DD (1) DD214064A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3314727C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0626153U (ja) * 1992-08-03 1994-04-08 エスエムケイ株式会社 電池ケース
DE102016100158A1 (de) 2016-01-05 2017-07-06 Ireks Gmbh Mischvorrichtung
DE102016100153A1 (de) * 2016-01-05 2017-07-06 Ireks Gmbh Mischvorrichtung und Mischwerkzeug
CN107486077A (zh) * 2017-09-12 2017-12-19 云南云天化农业科技股份有限公司 一种配肥设备
CN111921423B (zh) * 2020-08-06 2022-07-29 海盐县安巨机械制造有限公司 一种墙板生产用原料搅拌设备
CN113601815B (zh) * 2021-07-13 2022-12-23 江苏诺贝尔塑业有限公司 一种带混合器支架的镂空式网格状挤出管材机头结构

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073452B (de) * 1960-01-21 MIAG Mühlenbau und Industrie G.m.b.H., Hannover Vorrichtung zum Reinigen der Wand- und Bodenflächen von Granuliertellern
DE718499C (de) * 1938-02-04 1942-03-13 Norsk Spraengstofindustrie As Vorrichtung zur Bearbeitung plastischer Sprengstoffe
DE909091C (de) * 1950-03-04 1954-04-12 Sommer Schmidding Werke Vertri Kreiselmischer
DE1963242U (de) * 1966-12-24 1967-06-29 Happle U Sohn E Einrichtung zum mischen von pulver-, granulat- oder schnitzelfoermigen stoffen.
US3434697A (en) * 1967-07-12 1969-03-25 A & R Meats Inc Mixing machine
DE1531934C3 (de) * 1967-07-13 1975-02-27 Farbwerke Hoechst Ag, Vormals Meister Lucius & Bruening, 6000 Frankfurt Austrag- Misch- und Dosiervorrichtung für schlecht fließende pulverförmige Stoffe
DE1607780A1 (de) * 1967-07-26 1969-10-23 Guenther Papenmeier Ag Maschin Mischvorrichtung mit umlaufendem Mischbehaelter und geneigter Rotationsachse
US3630495A (en) * 1970-11-12 1971-12-28 Walter N Carroll Mixer unit
DE2516255C2 (de) * 1975-04-14 1976-09-09 Papenmeier Kg Maschf Guenther Mischer mit rotierendem mischbehaelter
CH637033A5 (de) * 1978-12-22 1983-07-15 Baumgartner Rolf Ag Konus-schneckenmischer.
DE3110437C2 (de) * 1981-03-18 1985-08-01 Werner & Pfleiderer, 7000 Stuttgart Mischer

Also Published As

Publication number Publication date
EP0125392A2 (de) 1984-11-21
DE3314727C2 (de) 1986-08-21
EP0125392A3 (en) 1984-12-19
DE3314727A1 (de) 1984-10-25
JPS59199026A (ja) 1984-11-12
JPS6257373B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1987-12-01
DD214064A5 (de) 1984-10-03

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