EP0351693A2 - Machine à remuer et/ou à pétrir - Google Patents

Machine à remuer et/ou à pétrir Download PDF

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Publication number
EP0351693A2
EP0351693A2 EP89112645A EP89112645A EP0351693A2 EP 0351693 A2 EP0351693 A2 EP 0351693A2 EP 89112645 A EP89112645 A EP 89112645A EP 89112645 A EP89112645 A EP 89112645A EP 0351693 A2 EP0351693 A2 EP 0351693A2
Authority
EP
European Patent Office
Prior art keywords
shaft
tool
hollow shaft
lifting
tool 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.)
Withdrawn
Application number
EP89112645A
Other languages
German (de)
English (en)
Other versions
EP0351693A3 (fr
Inventor
Uwe Grimm
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.)
Ika-Maschinenbau Janke & Kunkel & Co KG GmbH
Original Assignee
Ika-Maschinenbau Janke & Kunkel & Co KG 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 Ika-Maschinenbau Janke & Kunkel & Co KG GmbH filed Critical Ika-Maschinenbau Janke & Kunkel & Co KG GmbH
Publication of EP0351693A2 publication Critical patent/EP0351693A2/fr
Publication of EP0351693A3 publication Critical patent/EP0351693A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • B01F27/805—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle
    • 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
    • B01F35/10—Maintenance of mixers

Definitions

  • the invention relates to a mixing and / or kneading machine with at least one mixing and / or kneading tool rotating about its own axis, which has a continuous, undivided tool shaft, the product range from the drive area of the mixing and / or kneading machine in the area of the Tool shaft is sealed by a seal that engages the tool shaft.
  • the tools of these previously known kneading machines frequently have a two-part tool shaft, for example to enable the mixing and / or kneading blades attached to the shaft to be exchanged, for example when processing abrasive products.
  • the two shaft parts of this To this end two-part tool shafts engage in one another, for example in the product area, and are connected to one another in a rotationally fixed and axially immovable manner by a feather key pressed into the shaft groove of the one tool part by clamping screws.
  • the joint that inevitably arises between the shaft parts is shielded against ingress of mixed material by a seal separating the product or mixing area from the drive area of the kneading machine.
  • the clamping screws are accessible from the product area after removing the container.
  • clamping screws connecting the shaft parts to one another in the product area is disadvantageous, in particular when processing dangerous mixed materials, such as fuels or explosives.
  • these clamping screws and their threaded holes can easily become contaminated, for example, by the product to be treated, which, for example, involves considerable dangers when using explosive materials. when loosening the clamping screws.
  • the solution to this problem according to the invention consists in the mixing and / or kneading machine of the type mentioned in particular in that the tool shaft is rotatably and releasably held in a rotatably mounted hollow shaft, that all drive and / or driven wheels provided for the shaft and engage all bearings on the hollow shaft, and that the hollow shaft ends on its side facing the product area in front of the shaft seal separating the drive area from the product area.
  • the tool shaft can be quickly and easily removed from the hollow shaft in the mixing and / or kneading machine according to the invention.
  • the kneading machine according to the invention is designed as a vertical stirring and / or kneading machine in which at least one of its stirring and / or kneading tools rotates in a container.
  • an advantageous embodiment according to the invention provides that the tool shaft is connected in a rotationally fixed manner to the hollow shaft via a positive connection, preferably via a parallel key connection.
  • a feather key connection is associated with comparatively little production effort and is capable of transmitting sufficiently high torques.
  • the tool shaft is secured against axial displacement in the hollow shaft by at least one securing element connecting the hollow shaft to the tool shaft and preferably arranged on the end face of the shafts facing away from the product area.
  • This securing element holds the tool shaft firmly, but is still easily detachable in the hollow shaft. If the securing element is arranged on the end face of the shafts facing away from the product area, only a cover provided on the machine housing has to be lifted off in order to access the securing element.
  • a particularly simple and advantageous embodiment according to the invention provides that the securing element (s) is (are) designed as a securing screw (s).
  • the mixing and / or kneading machine according to the invention can be designed such that each locking screw with its thread or shaft penetrates a through hole arranged on the end face of the hollow shaft facing away from the product area and is screwed into a threaded bore arranged on the adjacent end face of the tool shaft is, and that the push-through hole and the threaded bore is preferably arranged eccentrically to the axis of rotation of the shafts.
  • the eccentric arrangement of the push-through hole and the threaded hole largely prevents the locking element in the form of a locking screw from loosening or unintentionally loosening or loosening due to the inherent rotation of the shafts.
  • At least one threaded bore is provided on the end face of the hollow shaft facing away from the product area is provided, into which a screw can be screwed for pressing the tool shaft out of the hollow shaft, and if the threaded bore preferably has the same thread as the locking screw. If the threaded bore provided for pressing off the tool shaft has the same thread as the locking screw, then after unscrewing it from the tool shaft it can advantageously also be used for pressing off the tool shaft.
  • a pulling device is provided for removing the tool shaft from the hollow shaft.
  • the removal of the tool shaft from the hollow shaft can be made even easier and can be carried out in a time-saving manner.
  • This provides a simple and advantageous embodiment of the kneading machine according to the invention, in which the drive unit and the container in the use position of the vertical stirrer and / or kneading machine are held at a distance above the machine base and a lifting device is provided for lowering and lifting the container, that the pulling device is essentially formed from the lifting device and a gripping and holding device cooperating therewith.
  • the lifting device has two lifting slides, which are arranged on two opposite sides of the mixing and / or kneading machine and can preferably be raised and lowered using a hydraulic cylinder, and if a support frame connected to the gripping device can be placed on the lifting slides .
  • the lifting slides which can be raised and lowered via, for example, a hydraulic cylinder, can thus not only be used for replacing or emptying, for example, the material filled with the mixture used correspondingly heavy container, but can also be used in a simple and advantageous manner for removing the tool shaft from the hollow shaft. So that when lifting and inserting the tool shafts or the like, not when tilting on the machine or gear housing.
  • the gripping device is expediently spring-mounted in the vertical direction and preferably releasably attached to the support frame.
  • a spring-loaded gripping device gives the operating personnel sufficient time, for example, to determine a tilting of the tool shaft during a lifting and inserting process and to stop the lifting device before there is a risk that the tool shaft will be considerably damaged. If the gripping device is detachably fastened to the supporting frame, then after releasing the gripping device the supporting frame can also be used to raise or lower other machine parts, for example.
  • a simple and advantageous embodiment according to the invention provides that the gripping device has a support part and two holding arms which are opposite one another and each have a clamping jaw on their free, upward-pointing ends, that in the use position of the pulling device the tool on its, the stirring and kneading blades area on the support part and the clamping jaws encompass the tool shaft, and that the clamping jaws can be connected to one another, for example via a screw connection. After tightening, for example, the screw connection connecting the clamping jaws, they grip the tool shaft securely and firmly, so that the shaft can be removed from the hollow shaft when the lifting device is lowered or inserted into the hollow shaft when the device is raised.
  • each of the two lifting slides of the lifting device preferably has two upward-pointing centering pins which engage in centering holes of the support frame in the use position of the lifting device.
  • the two outer tools are always centered in such a way that when they are installed, only the hollow shaft has to be brought into the correct position in a simple manner by a slight rotation on the gear housing.
  • FIG. 1 shows a kneading machine 1 with its drive area 2 and its product area 3 in a side sectional view.
  • the kneading machine 1 has three tools 6 arranged with their blades 4 in a container 5. While the two outer tools 6a rotate in the container 5 around the centrally arranged tool 6b and at the same time also rotate about their own axis, the centrally arranged tool 6b only rotates about its own axis.
  • a planetary gear 7 is provided for the rotary and revolving movements of the tools 6. Its web forms a gear housing 9 rotating in a machine housing 8, which is connected on the outside to a ring gear 10, which in turn meshes with an output gear 11 of a drive motor 12. Due to the rotation of the gear housing 9, the two outer tools 6a arranged eccentrically to the axis of rotation of the gear housing 9 rotate in the container 5, while the tool 6b arranged centrally and coaxially to the axis of rotation of the gear housing only rotates on the spot.
  • the blades 4 which are firmly connected to the tool shafts 18, for example welded, have to be replaced occasionally.
  • the shaft seals 19 acting on the tool shafts 18 must also be used as a precaution, for example in the event of wear, leakage or when processing dangerous, for example explosive, mixed materials be exchanged.
  • the tool shafts 18 are held in a rotatably mounted hollow shaft 20 so that they can rotate and be detached. All drive and / or driven wheels 13, 16 and 17 provided for the shafts 18 and all bearings 21 only engage the hollow shafts 20.
  • the hollow shafts each end on their side facing the product area 3 in front of their shaft seal 19 which separates the drive area 2 from the product area 3, so that this not only prevents an undesired penetration of mixed material into the gear housing 9, but also that between the hollow shafts 20 and corresponding tool shaft 18 shields necessarily formed joint.
  • Each of the tool shafts 18 is connected to its hollow shaft 20 in a rotationally fixed manner via a parallel key connection 22.
  • the tool shafts 18 are also secured against axial displacement in the hollow shaft 20 by means of a locking screw 23 arranged on the end faces of the shafts 18, 20 facing away from the product area.
  • each of these locking screws 23 penetrates with its thread or shaft a through hole arranged on the end face of the hollow shaft 20 facing away from the product area 3 and is screwed into a threaded bore arranged on the adjacent end face of the tool shaft.
  • the push-through hole and the threaded hole are arranged eccentrically to the axis of rotation of the shafts 18, 20.
  • the end face of the hollow shaft 20 facing away from the product area 3 is, as FIG. 1 shows, designed as an axially secured disk 24.
  • the locking screws 23 of the two outer tools 6a are accessible through control openings 26 arranged in the gear housing 9. 1 shows, the sun gear 14 of the planetary gear 7 is firmly connected to the cover 25.
  • the sun gear 14 is also removed from the gear housing 9.
  • the housing bearing 27 arranged between the gear housing 9 and the cover 25 of the machine housing 8 is designed to be separable. Due to the opening of the gear housing 9 which occurs after the cover 25 and the sun gear 14 are lifted off, the locking screw 23 of the centrally arranged tool 6b can also be loosened.
  • a threaded bore 28 is provided on the end of the hollow shafts facing away from the product area and designed as a disk 24, which has the same thread as the locking screw.
  • the vertical kneading machine 1 is shown in a partial sectional view with a removed tool shaft 18 or a tool 6a. As shown in FIG. 2, the kneading machine 1 forms a vertical stirring and kneading machine in which the drive unit and the container 5 are in the use position of the kneading machine via four columns 29 is kept at a distance above the machine base. Of the four columns 29, only the two front ones can be seen in FIG. 2.
  • the kneading machine 1 has a lifting device 30 for lowering and lifting the container 5 from FIG. 1.
  • the lifting device 30 has two lifting carriages 33, which are arranged on two opposite sides of the kneading machine 1 and are movably guided between two separate guide columns.
  • the lifting carriages can be raised and lowered via a respective hydraulic cylinder, which is covered by the columns 29 in FIG. 2 and is arranged between the guide columns and which are controlled synchronously.
  • a support frame 34 connected to the gripping device 31 of the pulling device 32 can be placed on the lifting slide 33.
  • the gripping device 31 is detachably connected to the support frame 34 and resiliently mounted in a holder, designated 35 in FIG. 2, in the vertical direction. If, when the lifting device is lifted and a tool shaft 18 is tilted, for example on the gear housing 9, it can tilt, this can be determined immediately by the operating personnel by giving in the spring contained in the holder 35. The operating personnel have sufficient time to abort the lifting process before the tool shaft 18 or another gear part is significantly damaged. As shown in FIG.
  • the tool 6 is seated in the gripping device 31 on its area having the screws 4 on a support part 36, while two clamping jaws 38 arranged on the free, upward-facing ends of a holding arm 37 each above the tool shaft 18 the blades 4, but still in the use position in Grip the product area 3 arranged area of the shaft 18.
  • each of the two lifting carriages 33 of the lifting device 30 has two centering mandrels 39 pointing upward, of which only the front one in FIG. 2 can be seen.
  • these centering pins 39 engage in centering holes 40 of the support frame 34, which are indicated here by dash-dotted lines.
  • the support frame 34 has a chassis 41.
  • the lifting slide 33 can be lowered so far below the support frame 34 that the centering pins 39 come out of the centering holes 40 of the support frame 34.
  • the kneading machine 1 has a lid lifting device 42 shown in FIG. 2 for lifting and placing the lid 25 which can be removed from the machine housing on.
  • This cover lifting device 42 essentially consists of two telescopically interlocking sleeves 43, one of which is fastened to the cover opening 44 of the machine housing 8 and the other is connected to the cover 25 via a support arm 45.
  • An im Hydraulic cylinders located inside the sleeves and not visible in FIG. 2 are arranged in the axis 46 of the sleeves 43, so that the cover 25 can be pivoted slightly outwards after being lifted off the machine housing 8.
  • the tools 6 and the tool shafts 18 of the kneading machine according to the invention can be removed conveniently, quickly and with simple aids, for example around one of the shaft seals 19 engaging on the shafts 18 or worn tool blades 4 exchange.
  • No additional hoist is required in the kneading machine 1 when installing and removing the tool shafts 18, since the gear 7 does not have to be completely removed or dismantled. Downtimes can be reduced by, for example, quickly changing the seals or replacing the tool blades.
  • the continuous, undivided tool shafts 18 also allow the product area 3 to be cleaned easily and quickly, which is particularly important in the processing of dangerous mixed materials, such as fuels or explosives.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Accessories For Mixers (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP19890112645 1988-07-22 1989-07-11 Machine à remuer et/ou à pétrir Withdrawn EP0351693A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3824885 1988-07-22
DE3824885A DE3824885A1 (de) 1988-07-22 1988-07-22 Ruehr- und/oder knetmaschine

Publications (2)

Publication Number Publication Date
EP0351693A2 true EP0351693A2 (fr) 1990-01-24
EP0351693A3 EP0351693A3 (fr) 1990-12-27

Family

ID=6359286

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890112645 Withdrawn EP0351693A3 (fr) 1988-07-22 1989-07-11 Machine à remuer et/ou à pétrir

Country Status (2)

Country Link
EP (1) EP0351693A3 (fr)
DE (1) DE3824885A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5816700A (en) * 1995-10-26 1998-10-06 E. I. Du Pont De Nemours And Company Process and apparatus for mechanically mixing polymers and lower viscosity fluids
US6179458B1 (en) 1996-11-01 2001-01-30 E. I. Du Pont De Nemours And Company Forming a solution of fluids having low miscibility and large-scale differences in viscosity
EP1189977B2 (fr) † 1999-05-20 2012-10-10 Dow Global Technologies LLC Processus continu d'extrusion et de dispersion mecanique d'une resine polymere en milieu aqueux ou non aqueux
EP3970498A1 (fr) * 2020-09-21 2022-03-23 DIOSNA Dierks & Söhne GmbH Machine à pétrir pour pâtes alimentaires à étanchéité des outils de pétrissage
CN114243026A (zh) * 2021-11-17 2022-03-25 喆烯新材(北京)科技有限公司 一种石墨烯集流体的制备方法及其制备设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013018725A1 (de) * 2013-11-08 2015-05-13 Wusoa Gmbh Bionisches Rührwerk

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3075746A (en) * 1958-07-10 1963-01-29 Baker Perkins Inc Mixer for explosive materials
JPS5423003A (en) * 1977-07-22 1979-02-21 Kubota Ltd Replacting apparatus for stirring blade of stirrer for molten metal
DE8531519U1 (de) * 1985-11-08 1986-01-09 A. Friedr. Flender Gmbh & Co Kg, 4290 Bocholt Wechselvorrichtung für Dichtungen
DE3604505A1 (de) * 1986-02-13 1987-08-20 Dierks & Soehne Mischmaschine fuer schuett- oder fliessfaehige stoffe wie z.b. kunststoffmischungen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR758056A (fr) * 1932-08-02 1934-01-10 Aeschbach F Ag Machine à brasser, à pétrir et à mélanger
DE635177C (de) * 1934-07-05 1936-09-11 Herbst & Co E Ruehr- und Schlagmaschine
DE2111630C3 (de) * 1971-03-11 1974-11-14 Maschinenfabrik Rhenania Mbh & Co Kg, 5000 Koeln Rührwerkantrieb

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3075746A (en) * 1958-07-10 1963-01-29 Baker Perkins Inc Mixer for explosive materials
JPS5423003A (en) * 1977-07-22 1979-02-21 Kubota Ltd Replacting apparatus for stirring blade of stirrer for molten metal
DE8531519U1 (de) * 1985-11-08 1986-01-09 A. Friedr. Flender Gmbh & Co Kg, 4290 Bocholt Wechselvorrichtung für Dichtungen
DE3604505A1 (de) * 1986-02-13 1987-08-20 Dierks & Soehne Mischmaschine fuer schuett- oder fliessfaehige stoffe wie z.b. kunststoffmischungen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 3, Nr. 46 (C-43) 18 April 1979; & JP-A-54 023 003 (KUBOTA TEKKO K.K.) 21-02-1979 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5816700A (en) * 1995-10-26 1998-10-06 E. I. Du Pont De Nemours And Company Process and apparatus for mechanically mixing polymers and lower viscosity fluids
US6179458B1 (en) 1996-11-01 2001-01-30 E. I. Du Pont De Nemours And Company Forming a solution of fluids having low miscibility and large-scale differences in viscosity
EP1189977B2 (fr) † 1999-05-20 2012-10-10 Dow Global Technologies LLC Processus continu d'extrusion et de dispersion mecanique d'une resine polymere en milieu aqueux ou non aqueux
EP3970498A1 (fr) * 2020-09-21 2022-03-23 DIOSNA Dierks & Söhne GmbH Machine à pétrir pour pâtes alimentaires à étanchéité des outils de pétrissage
WO2022058477A1 (fr) * 2020-09-21 2022-03-24 DIOSNA Dierks & Söhne GmbH Machine à pétrir pour pâtes alimentaires pourvue d'un système assurant l'étanchéité des outils pétrisseurs
CN114243026A (zh) * 2021-11-17 2022-03-25 喆烯新材(北京)科技有限公司 一种石墨烯集流体的制备方法及其制备设备
CN114243026B (zh) * 2021-11-17 2023-09-05 荣烯新材(北京)科技有限公司 一种石墨烯集流体的制备方法以及设备

Also Published As

Publication number Publication date
DE3824885C2 (fr) 1990-11-08
EP0351693A3 (fr) 1990-12-27
DE3824885A1 (de) 1990-01-25

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