EP0624768A1 - Dispositif pour agiter, en particulier pour mélanger et/ou sécher une matière - Google Patents

Dispositif pour agiter, en particulier pour mélanger et/ou sécher une matière Download PDF

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Publication number
EP0624768A1
EP0624768A1 EP94810284A EP94810284A EP0624768A1 EP 0624768 A1 EP0624768 A1 EP 0624768A1 EP 94810284 A EP94810284 A EP 94810284A EP 94810284 A EP94810284 A EP 94810284A EP 0624768 A1 EP0624768 A1 EP 0624768A1
Authority
EP
European Patent Office
Prior art keywords
container
wall
wall section
section
shaft
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
Application number
EP94810284A
Other languages
German (de)
English (en)
Other versions
EP0624768B1 (fr
Inventor
Rolf Baumgartner
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0624768A1 publication Critical patent/EP0624768A1/fr
Application granted granted Critical
Publication of EP0624768B1 publication Critical patent/EP0624768B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
    • F26B9/08—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers including agitating devices, e.g. pneumatic recirculation arrangements
    • F26B9/082—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers including agitating devices, e.g. pneumatic recirculation arrangements mechanically agitating or recirculating the material being dried
    • F26B9/085—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers including agitating devices, e.g. pneumatic recirculation arrangements mechanically agitating or recirculating the material being dried moving the material in a substantially vertical sense using conveyors or agitators, e.g. screws or augers with vertical axis, which are positioned inside the drying enclosure
    • 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
    • B01F27/09—Stirrers characterised by the mounting of the stirrers with respect to the receptacle
    • B01F27/091—Stirrers characterised by the mounting of the stirrers with respect to the receptacle with elements co-operating with receptacle wall or bottom, e.g. for scraping the receptacle wall
    • 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
    • B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
    • B01F27/921—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with helices centrally mounted in the receptacle
    • B01F27/9211—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with helices centrally mounted in the receptacle the helices being surrounded by a guiding tube
    • 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
    • B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
    • B01F27/921—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with helices centrally mounted in the receptacle
    • B01F27/9214—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with helices centrally mounted in the receptacle with additional mixing elements other than helices; having inner and outer helices; with helices surrounding a guiding tube

Definitions

  • the present invention relates to a device according to the preamble of claim 1.
  • the device is used in particular to produce powder mixtures, granules and the like, for example foodstuffs and powdered pharmaceuticals.
  • the good components to be mixed with one another are introduced into the interior of the container through an opening provided in the lid of the container.
  • the material is then moved and mixed by means of the stirrer, it being possible for further components and additives, such as liquids, dyes and the like, to be added to the material during the mixing process.
  • the object of the invention is to create a device which does not have the disadvantages of the known devices.
  • the device shown in FIG. 1 and designated as a whole by 1 has a frame 2 which is shown in simplified form and which holds a relatively large container 3 in a stationary manner.
  • the latter is essentially rotationally symmetrical, that is to say it has a vertical axis 4, and has a cylindrical wall 5, at the lower end of which there is a conical wall part 6 which tapers downwards.
  • the container 3 is also provided with a lid 7 which is detachably attached to the wall 5 and has at least one lockable inlet 8 for filling the goods.
  • the conical wall part 6 has at its lower end an outlet 9 which can be shut off with an outlet member 10.
  • the outlet member 10 is designed as a cone valve and has an axially movable, conical closure element 10a, which can be adjusted, for example, with a manual or pneumatic adjusting device.
  • the outlet member 10 can also be designed as a sliding, folding or ball valve.
  • the interior 11 of the container is through a substantially funnel-shaped wall 12 coaxial with the axis 4 into a first, inner part space 11a and a second, outer part space 11b divided.
  • the wall 12 is held stationary by the holding arms 12a and has a conical wall section 13 which is open at the top and tapers downwards and to which a cylindrical wall section 14 adjoins.
  • the lower part of the shaft 15 lying at least partially within the cylindrical wall section 14 is designated 15a and the upper part of the shaft 15 lying within the conical wall section 13 is designated 15b.
  • the lower section 15a of the shaft 15 is provided with a conveying element, namely a worm helix 16, which is formed by an uninterrupted, helical metallic band and serves the material to be mixed through the cylindrical wall section 14 upwards into the conical wall section 13 promote.
  • the outer diameter of the screw helix 16 is dimensioned such that it is separated from the inner wall of the wall section 14 only by a small space.
  • mixing elements 17 are arranged on the upper section 15b of the shaft 15, which serve to mix the part of the material conveyed into the conical section 13 optimally and gently.
  • the shaft 15 with its sealed end section pierces the cover 7 and is driven by a motor 18 of the drive device 19, for example a hydraulic motor, via a transmission at speeds of, for example, 10 to 50 revolutions per minute.
  • a motor 18 of the drive device 19 for example a hydraulic motor
  • the shaft 15 is rotatably supported not only in the cover 8 but also on the outlet member 10.
  • it has a bore 15c and the closure element at its lower end 10a of the outlet member 10 on its surface facing the interior 11 onto a guide pin 10b which fits into the bore 15c, so that the shaft 15 can be plugged onto the closure element 10a and thereby rotatably supported.
  • the guide pin 10b can be designed, for example, as a needle-bearing guide head.
  • elongated vanes 20, triangular in cross section and projecting into the partial space 11b, are fastened to the cylindrical wall section 14, four of which are each arranged radially to one another.
  • the wings 20 essentially serve to distribute the material flowing down in the sub-space 11b by braking the flow speed and thereby shortening the mixing time.
  • the outlet 9 is first closed. Thereafter, the good components to be mixed with one another can be introduced into the container 3 through the opening 8 in the cover 7, during which the shaft 15 is rotated about the container axis 4, so that part of the good to be mixed continuously flows from the lower area of the outer sub-space 11b withdrawn and conveyed upward through the cylindrical wall section 14, moved and mixed within the conical wall section 13 with the mixing elements 17 and then conveyed back into the outer sub-space 11b via the upper edge of the conical wall section 13. Since the screw helix 16 can reach as far as the deepest point of the interior 11, the mixture located at the bottom is also picked up by the screw and conveyed upwards.
  • water vapor or solvent vapor can be evacuated via an inlet connection piece (not shown in the drawing).
  • a container for receiving the treated material can be detachably and tightly attached to the lower end of the outlet member 10. Thereafter, the outlet 9 can be largely released by vertically displacing the closure element 10a. Since the guide bolt 10b of the closure element 10a does not have to be completely moved out of the bore 15c of the shaft 15 for the removal of the mixed material, the shaft 15 can also be rotated about the container axis 4 during the removal of the mixed material, the shaft 15 being used at the outlet Organ 10 remains stored so that the mix can run out evenly and completely.
  • the material is circulated vertically by means of the screw helix 16 and mixed gently within the conical wall section 13.
  • the conveying path of the goods is indicated by arrows 21 and 22.
  • Individual components of the good as well as additives, such as dyes and the like, can also be added to a good part already presented in the container 3 during the rotational movement of the shaft 15 through the inlet 8 provided in the lid.
  • the device according to the invention enables the substances introduced subsequently to be uniformly distributed as soon as they are introduced into the good part placed in the container, so that the mixing time is considerably reduced.
  • FIG. 1 The device described with reference to FIG. 1 represents only a selection of several possible embodiments of the invention and can be changed in various respects.
  • FIG. 2 Another embodiment of the invention is therefore shown in FIG. 2.
  • the device designated 101 in its entirety in this figure is largely similar to the device 1 described with reference to FIG. 1, and thus, like this device, has, among other things, a funnel-shaped wall 112 formed from a conical wall section 113 and a cylindrical wall section 114.
  • the device 101 has a somewhat modified conveying element and a cylindrical wall section 114 formed from two half-shells 114a and 114b.
  • the shaft 115 is also provided in the device 101 with a screw helix 116 which is used to convey the goods.
  • the conveying element of the device 101 additionally has, at its end section protruding from the cylindrical wall section 114, a second screw coil 117 which is axially symmetrical with the screw coil 116.
  • This double-winged design of the screw conveyor at least in the lower entry area, serves in particular to largely avoid one-sided pressure loads on the shaft 115.
  • the dimensions of the devices according to the invention can vary within wide limits, the usable container volume being for example in the size of 20 to 200,000 l. Facilities with a relatively large usable container volume can also have a hatch that can be walked on by a service man, so that cleaning, checking and repair work can be done inside the container without having to separate the lid from the cylindrical wall part of the container.
  • the cylindrical wall section 114 shown in FIGS. 2 and 3 and formed from the two half-shells 114a and 114b is expedient especially for devices of this size.
  • first half-shell 114a is fixedly connected to the conical wall section 113, while the second half-shell 114b is pivotably attached by means of rotating and locking means 118 and 119 arranged on it and on the first half-shell 114a in such a way that - as shown in FIG. 3 -
  • the interior of the cylindrical wall section and the conveying member can be made accessible to the service man for repair and cleaning purposes in a simple manner.
  • the dimensions of the funnel-shaped wall 12 or 112 can of course also be varied.
  • the length of the funnel-shaped wall can be dimensioned such that it extends over approximately 3/4 to 2/3 of the height of the interior (11).
  • the dimensions and shapes of the mixing tools can vary depending on the material to be mixed and the size of the container.
  • the devices according to the invention can also vary in other respects.
  • these can also have a double-walled container in order to selectively cool or heat the material present in the container by introducing a cooling or heating fluid between the two walls of the container.
  • a device according to the invention instead of the vanes 20 shown in FIG. 1, can also have a flow brake formed from a plurality of segments, arranged helically or spirally around the partition wall 12.
  • the devices can also have an electronic control device in order to automatically carry out the control and / or regulating operations that are different for the mixing process.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Drying Of Solid Materials (AREA)
  • Detergent Compositions (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
EP94810284A 1993-05-13 1994-05-13 Dispositif pour agiter, en particulier pour mélanger et/ou sécher une matière Expired - Lifetime EP0624768B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH145793 1993-05-13
CH1457/93 1993-05-13
CH145793 1993-05-13

Publications (2)

Publication Number Publication Date
EP0624768A1 true EP0624768A1 (fr) 1994-11-17
EP0624768B1 EP0624768B1 (fr) 1999-12-22

Family

ID=4210917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810284A Expired - Lifetime EP0624768B1 (fr) 1993-05-13 1994-05-13 Dispositif pour agiter, en particulier pour mélanger et/ou sécher une matière

Country Status (3)

Country Link
EP (1) EP0624768B1 (fr)
AT (1) ATE188028T1 (fr)
DE (1) DE59409018D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3009487A1 (fr) * 2013-08-09 2015-02-13 Maurice Guillot Dispositif de sechage de fruits a coque et de graines
CN108568919A (zh) * 2018-04-28 2018-09-25 重庆瑞霆塑胶有限公司 塑胶原料搅拌装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2207360A (en) * 1937-08-20 1940-07-09 Hercules Powder Co Ltd Drier
DE1063529B (de) * 1958-06-12 1959-08-13 Dr Walther Fischer Satztrockner fuer Getreide oder aehnliches koerniges Gut
US3563399A (en) * 1967-05-15 1971-02-16 Charles C Shivers Method for circulating grain stored in a circular bin
DE2228429A1 (de) * 1972-06-10 1973-12-20 Cramer & Soehne Maschf Mischvorrichtung zum mischen und einfaerben von kunststoffen
US3797702A (en) * 1971-03-29 1974-03-19 J Robertson Scrap recovery and feed system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2207360A (en) * 1937-08-20 1940-07-09 Hercules Powder Co Ltd Drier
DE1063529B (de) * 1958-06-12 1959-08-13 Dr Walther Fischer Satztrockner fuer Getreide oder aehnliches koerniges Gut
US3563399A (en) * 1967-05-15 1971-02-16 Charles C Shivers Method for circulating grain stored in a circular bin
US3563399B1 (fr) * 1967-05-15 1986-08-12
US3797702A (en) * 1971-03-29 1974-03-19 J Robertson Scrap recovery and feed system
DE2228429A1 (de) * 1972-06-10 1973-12-20 Cramer & Soehne Maschf Mischvorrichtung zum mischen und einfaerben von kunststoffen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3009487A1 (fr) * 2013-08-09 2015-02-13 Maurice Guillot Dispositif de sechage de fruits a coque et de graines
CN108568919A (zh) * 2018-04-28 2018-09-25 重庆瑞霆塑胶有限公司 塑胶原料搅拌装置

Also Published As

Publication number Publication date
EP0624768B1 (fr) 1999-12-22
ATE188028T1 (de) 2000-01-15
DE59409018D1 (de) 2000-01-27

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