US3820597A - Mixer having a device for cooling of material to be mixed - Google Patents

Mixer having a device for cooling of material to be mixed Download PDF

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Publication number
US3820597A
US3820597A US00286542A US28654272A US3820597A US 3820597 A US3820597 A US 3820597A US 00286542 A US00286542 A US 00286542A US 28654272 A US28654272 A US 28654272A US 3820597 A US3820597 A US 3820597A
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US
United States
Prior art keywords
mixer
container
elements
cooling
adjustable
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 - Lifetime
Application number
US00286542A
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English (en)
Inventor
W Bittner
K Berker
G Claes
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.)
PAPENMEIER KG MASCHF GUENTHER
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PAPENMEIER KG MASCHF GUENTHER
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.)
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Publication date
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Publication of US3820597A publication Critical patent/US3820597A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • B01F35/95—Heating or cooling systems using heated or cooled stirrers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/135—Movable heat exchanger
    • Y10S165/139—Fully rotatable
    • Y10S165/152—Rotating agitator

Definitions

  • a mixer having a device for the cooling of powdered, granular, liquid or otherwise flowable material to be mixed, in particular plastics agglomerates or the like, consisting of a cup-shaped mixture container which may be double-walled and through which a coolant flows, and which has a mixing implement rotating in its center over the bottom thereof.
  • the invention is based on the problem of how to provide a cooling mixer which is able to bring the material to be mixed, in theshortest possible time, to a desirbed temperature and, in particular, to achieve the result that the treatment time during cooling always corresponds with maximum exactitude to the time required for thepreparation of the material to be mixed in a high-speed mixer, being at least not substantially longer.
  • Such disadvantages have'frequently been encountered in particular in mixer combinations consisting of a processing high-speed mixer and a sequentially connected cooling mixer, so that the efficiency of the high-speed mixer cannot be fully utilized because the efficiency of the: cooling mixer was lower, unless the cooling mixer was designed to be disproportionately larger and more efficientso as to achieve the same treatment times as in the high-speed mixer. This requires, however, a considerable additional expenditure.
  • a cooling mixer of the type under consideration includes novel cooling elements which project into the inner space of the mixing container.
  • the cooling elements are double-walled, spade"-shaped elements, through which coolant flows, and which are designed as baffle plates.
  • Such cooling elements are preferably concavely curved with reference to the central axis of the mixing container, and are arranged one after the other in spaced relationship relative to the inner wall of the mixing container and in spaced relationship relative to each other in the peripheral direction, and being adapted to be so adjusted relative to the incident flow of mixing material that the run-off edge is-located radially further inwardly than the incident-flow edge.
  • the cooling elements may be adjusted into an optimum position, in adaptation to the material to be mixed in each particular instance and retained in this position, so that the material to be mixed passes, during operation, in every case over the largest possible cooled surface of the cooling elements.
  • the cooling elements are disposed on a holding shaft or the like through which the coolant is fed to or discharged from the cooling elements.
  • the holding shafts of the cooling elements may be mounted in the upper zone of the mixing container'and/or at any optional location on the walls of the mixing container. Preferrable mounting locations are in the upper zone of the walls of the mixingcontainer or in the lateral wall.
  • a further improvement in the cooling efficiency can be achieved by designing the bottom of the mixing container to be double-walled and introducing into it a coolantrouted in the desired manner by baffle plates arranged preferably spirally in the double bottom.
  • FIG. 1 is a partial, radial section through one half of a mixing container of a mixer
  • FIG. 2 drawn on a smaller scale, is a horizontal section taken on line IIII of FIG. 1, and diagrammatically illustrates the disposition of the coolant elements;
  • FIG. 3 is an enlarged scale, detail section through the mixing container walls of a second embodiment at the zone of a modified retaining means for a cooling element.
  • a mixing container is provided with double walls 11 and a double bottom 12 and has a mixing implement 13 for circulating the material to be mixed in the mixing container.
  • double-wall cooling elements 14 Arranged in inwardly spaced relationship relative to the inner wall of the mixing container are double-wall cooling elements 14 of spade shape, or some similar shape, and which are arranged disposed one behind the other with predetermined spacing relative to each other in the peripheral direction. Cooling elements 14 preferably have a concave curvature relative to the central axis 15 of the mixing container (FIG. 2), and are carried by a shaft 16 mounted for pivoting in bearings 17 in the upper zone 18 or top wall of the mixing container.
  • each shaft 16 has, externally of the mixing container, a pinion 19 secured thereto and meshing with a toothed rim 20 rotatably mounted on the mixing container.
  • a pinion 19 secured thereto and meshing with a toothed rim 20 rotatably mounted on the mixing container.
  • Shaft 16 is hollow and disposed in it is a coolant feed pipe 22 routing the coolant into the lower zone of the cooling element 14.
  • baffle plates 23 Arranged in the cavity in the cooling element 14 are, advantageously, baffle plates 23 which may if so desired be perforated for more satisfactorily distributing the coolant as it flows through the inner space of the cooling element.
  • a head member 24 Arranged at the upper end of the shaft 16 is a head member 24 for connection to the coolant feed and discharge hoses 25 or 26.
  • the double-walled bottom 12 also should preferrably contain baffle plates 27 extending outwardly from a central partition ring 28.
  • the coolant feed stub 29 debouches into the annular chamber 30 within the coolant guide ring 28 and formed in that ring are apertures 31 enabling outflow of the coolant.
  • the rotating mixing implement 13 adjacent the container bottom wall circulates the material being mixed within the mixing container, centrifugally hurling it outwardly.
  • the material flows along the cooled inner wall and ascends at the lateral wall up to a predetermined level, whereupon it undergoes a radial inflow and flows back in the center of the container again passing to the mixing implement.
  • the cooling elements 14 are so adjusted into the flow path of the mixing material, i.e., they are so adjusted with respect to their height and angular position that the cooled inner and outer faces of the cooling elements 14 have an optimum flow of mixing material to be cooled passing over them.
  • the cooling elements 14 are carried by a holding tube or shaft 41 arranged with a ball joint bearing 42 in the double-walled lateral wall 11 of the mixing container.
  • a tensioning ring on the ball 44 and with the ball cup 43 retains the ball in the adjusted position.
  • the holding tube 41 may be adjusted in all directions within a predetermined range. Furthermore, it is advantageous to arrange between the cooling elements 14' and the holding tube 41 ajoint 46 affording further possibilities for adjustment.
  • the holding tube 41 between the cooling element 14 or the joint 46 and the ball 44 of the joint 46 spacer sleeves or rings locked together by a threaded ring 47 on the outer end of the holding tube 41.
  • a head member 48 Disposed on the outer end of the holding tube 41 is a head member 48 to which are connected the flexible tubes 49 or 50 for the infeed or discharge of the coolant. The coolant is supplied to the cooling elements 14' through the holding tube.
  • the mixer having the device according to the invention is not restricted to the embodiments described purely by way of example. On the contrary, it is possible to provide in the holding means for the cooling elements for a wide range of variants, without thereby departing from the basic idea underlying the invention.
  • the cooling elements may be carried by a holding tube or shaft without a ball joint bearing, i.e., arranged rigidly in the double-walled lateral wall of the mixing container or under the cover or lid of the mixing container. It is also possible (with further advantage in respect of costs and with reference to the range of application) to employ the cooling mixer designed in accordance with the invention as a heating mixer for the processing of granular, gellike or similar plastics or the like.
  • a mixer including means for the cooling of powdered, granular, liquid or otherwise flowable material to be mixed, in particular plastics agglomerates or the like, comprising: a double walled cup-shaped mixing container through which coolant flows; said mixing container having a mixing implement rotating in the center over its bottom; and a plurality of double-walled cooling elements through which coolant flows and which are concavely curved relative to the middle axis of the container mounted in the inner container space in spaced relationship relative to the container inner wall; said plurality of cooling elements having spade"- shape and arranged in spaced relationship in the peripheral direction and including adjustable means enabling variations in disposition of the run-off edge located radially further inwardly than the incident-flow edge.
  • a mixer including means for varying the temperature of material to be mixed comprising: a cup-shaped mixing container comprising confining double bottom and double side walls through which coolant flows; a mixing implement; means mounting the mixing implement within the container for rotation about the vertical axis of the container and disposed adjacent the container bottom wall; a plurality of arcuate, spade shaped hollow heat exchange elements each element with a concave radially inwardly facing surface and with leading and trailing edges disposed in circumferentially spaced relationship in an annular zone around the axis of the container, and spaced inwardly from the container side wall, each element having means enabling circulatin of a heat exchange medium therethrough from exterior of the container; and means mounting said elements for selective adjustment so the edges can be variably located at different dispositions with the trailing edges disposed closer to the container axis than are the leading edges.
  • each said pivotal mounting means journals its associated shaft for rotation about a fixed axis.
  • each element includes internal flow directing baffles.
  • a mixer according to claim 14, wherein the incident-flow edge of the elements are shaped to a contour complementing the profile of the inner wall surface of adjustment.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Accessories For Mixers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
US00286542A 1971-09-15 1972-09-06 Mixer having a device for cooling of material to be mixed Expired - Lifetime US3820597A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712146150 DE2146150B2 (de) 1971-09-15 1971-09-15 Mischer mit einrichtung zum kuehlen von staubfoermigem, koernigem, fluessigem oder sonstigem fliessfaehigen mischgut, insbesondere von kunststoffagglomeraten oder dergl

Publications (1)

Publication Number Publication Date
US3820597A true US3820597A (en) 1974-06-28

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ID=5819650

Family Applications (1)

Application Number Title Priority Date Filing Date
US00286542A Expired - Lifetime US3820597A (en) 1971-09-15 1972-09-06 Mixer having a device for cooling of material to be mixed

Country Status (4)

Country Link
US (1) US3820597A (enExample)
DE (1) DE2146150B2 (enExample)
FR (1) FR2152951B1 (enExample)
GB (1) GB1394098A (enExample)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4432650A (en) * 1980-05-09 1984-02-21 Langen Johannes C Handling device for handling meat portions
US5123748A (en) * 1989-07-07 1992-06-23 N.V. Machinefabriek Terlet Mixing device with central thermal element
US6073452A (en) * 1998-08-21 2000-06-13 Karp; Charles D. Rapid chilling of foodstuffs
US20050232071A1 (en) * 2004-03-29 2005-10-20 Hiroyuki Matsumoto Agitator, a circulatory cleaning device attached to the agitator, and a circulatory line system comprising the circulatory cleaning device
US20050276157A1 (en) * 2002-09-18 2005-12-15 Kabushiki Kaisha Kobe Seiko Sho Heat exchange system and rotor having the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004043498A1 (de) * 2004-09-06 2006-03-09 KTI-Plersch Kältetechnik GmbH Eislager
DE102024000885A1 (de) 2024-03-19 2025-09-25 Bb Engineering Gmbh Dynamische Mischvorrichtung für ein Fluid, Extruder mit einer derartigen Mischvorrichtung und Verfahren zum Betreiben einer dynamischen Mischvorrichtung für ein Fluid

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4432650A (en) * 1980-05-09 1984-02-21 Langen Johannes C Handling device for handling meat portions
US5123748A (en) * 1989-07-07 1992-06-23 N.V. Machinefabriek Terlet Mixing device with central thermal element
US6073452A (en) * 1998-08-21 2000-06-13 Karp; Charles D. Rapid chilling of foodstuffs
US20050276157A1 (en) * 2002-09-18 2005-12-15 Kabushiki Kaisha Kobe Seiko Sho Heat exchange system and rotor having the same
US7063454B2 (en) * 2002-09-18 2006-06-20 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Heat exchange system and rotor having the same
US20050232071A1 (en) * 2004-03-29 2005-10-20 Hiroyuki Matsumoto Agitator, a circulatory cleaning device attached to the agitator, and a circulatory line system comprising the circulatory cleaning device
US7540651B2 (en) * 2004-03-29 2009-06-02 Kansai Paint Co., Ltd. Agitator, a circulatory cleaning device attached to the agitator, and a circulatory line system comprising the circulatory cleaning device

Also Published As

Publication number Publication date
FR2152951B1 (enExample) 1975-09-12
FR2152951A1 (enExample) 1973-04-27
DE2146150C3 (enExample) 1974-04-18
GB1394098A (en) 1975-05-14
DE2146150B2 (de) 1973-08-30
DE2146150A1 (de) 1973-04-12

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