EP0724940B1 - Einrichtung zum Mischen und Fördern von Schüttgütern - Google Patents

Einrichtung zum Mischen und Fördern von Schüttgütern Download PDF

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Publication number
EP0724940B1
EP0724940B1 EP96101175A EP96101175A EP0724940B1 EP 0724940 B1 EP0724940 B1 EP 0724940B1 EP 96101175 A EP96101175 A EP 96101175A EP 96101175 A EP96101175 A EP 96101175A EP 0724940 B1 EP0724940 B1 EP 0724940B1
Authority
EP
European Patent Office
Prior art keywords
mixing screw
mixing
blade
bucket mixer
vessel
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
EP96101175A
Other languages
English (en)
French (fr)
Other versions
EP0724940A2 (de
EP0724940A3 (de
Inventor
Porello G. Battista
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.)
DITTA PORELLO G BATTISTA
Original Assignee
DITTA PORELLO G BATTISTA
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 DITTA PORELLO G BATTISTA filed Critical DITTA PORELLO G BATTISTA
Publication of EP0724940A2 publication Critical patent/EP0724940A2/de
Publication of EP0724940A3 publication Critical patent/EP0724940A3/de
Application granted granted Critical
Publication of EP0724940B1 publication Critical patent/EP0724940B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/1238—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices
    • B28C5/1292—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices with rotating stirring and feeding or discharging means fixed on the same axis, e.g. in an inclined container fed at its lower part
    • 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
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/502—Vehicle-mounted mixing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/14—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a horizontal or substantially horizontal axis
    • B28C5/142—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a horizontal or substantially horizontal axis the stirrer shaft carrying screw-blades

Definitions

  • the present invention refers to a bucket mixer for mixing solid aggregates and delivering the mixture. More particularly, the invention relates to a bucket mixer for mixing solid aggregates such as concrete aggregates, of the kind comprising a vessel and an inner mixing screw rotating about an axis parallel to the longitudinal axis of the vessel.
  • the bucket mixer of this invention is of the kind providing a plurality of blades mounted to the peripheral part of the mixing screw so as to extend radially as far as near to the edge of the vessel, the blades being oriented at a winding direction opposite to that of the mixing screw so as to attain the double effect of cleaning or scraping the vessel walls and urge the material in the opposite direction of that imparted by the mixing screw during operation of the bucket mixer.
  • U.S. patent No. 4,223,996 discloses an apparatus of the above discussed kind and suggests that the blades can be welded or otherwise secured in a rigid manner, permanently or removably, to the peripheral part of the mixing screw. According to this document, fixing is accomplished by restraining the inner edge of the blade in a recess obtained in the mixing screw. This solution first of all weakens the mixing screw at the points where the recesses are. Further, it makes it difficult to provide a system for releasably securing the blade to the peripheral part of the mixing screw, as these two members are substantially at a right angle with respect to each other in a point where they undergo considerably high torsion stresses. Finally, for the same reasons also the blade tends to deform rapidly. Replacing the blade may become difficult or impossible due to the manner in which it is coupled to the mixing screw.
  • Italian patent No. 1,210,783 which is considered to represent the closest state of the art discloses a bucket mixer according to the preamble of the independent claim 1, wherein each blade is pivotally mounted to a support welded to the mixing screw, in order to rotate from a retracted position near the axis of the mixing screw to an extended position in proximity of the vessel.
  • a bucket mixer of known kind provides a vessel 10 for containing the products to be mixed. Within vessel 10 there is mounted a mixing screw 11 rotating about a central longitudinal axle consisting of a shaft 12.
  • blades 13 forming preset angles therebetween.
  • the blades 13 are oriented perpendicular to the mixing screw 11 and directed towards the inner wall of the vessel 10, so as to provide counter-current mixing with respect to mixing screw 11 and clear the inside of vessel 10 during mixing.
  • the blades 13 are rigidly fixed, by means of bolts 14, to an intermediate bracket 16 which is itself rigidly fixed, by means of bolts 14 to a support 15 welded to the peripheral part of the mixing screw 11.
  • the support 15 is a flat base. Interposed between the flat support 15 and the flat blade 13 there is an L-shaped bracket 16 connected by bolts 14 to either members 13 and 15 (as shown in FIGS. 2 and 3).
  • the blade is rigidly fixed to the bracket 16 which is connected by bolts 14 to the support 15 itself welded to the mixing screw but in such way as not to cause deformation in either bodies and be easily replaced when worn or in case of failure.
  • no blades maintenance (washing) is required as there are no parts reciprocally moving during operation.

Claims (2)

  1. Bechermischer zum Mischen fester Aggregate und Abgeben des Gemisches, umfassend:
    ein Gefäß (10);
    Gegenstrommischmittel, welche ihrerseits eine Mischschnecke (11), die innerhalb des Gefäßes (10) angebracht ist und sich im Wesentlichen durch den gesamten Bechermischer erstreckt, und eine Reihe von Schaufeln (13), die durch den Umfangsteil der Mischschnecke (11) getragen werden und sich radial von der Kante davon bis in die Nähe der Innenwand des Gefäßes (10) erstrecken, umfassen, wobei die Schaufeln (15) in eine Windungsrichtung ausgerichtet sind, welche jener der Mischschnecke (11) entgegengesetzt ist, um Gegenstrommischen in Bezug auf die Mischschnecke (11) vorzusehen; und
    einen Träger (15) für jede Schaufel (13), um die betreffende Schaufel (13) an der Mischschnecke (11) zu befestigen, wobei jeder Träger (15) an den Umfangsteil der Mischschnecke (11) geschweißt ist;
    wobei der Bechermischer dadurch gekennzeichnet ist, dass er weiterhin eine Zwischenklammer (16) zwischen der Schaufel und dem Träger (15) und lösbare Befestigungsglieder (14), um jede Schaufel (13) auf eine starre und zur Gänze lösbare Weise an der betreffenden Zwischenklammer (16) und jede Klammer (16) ihrerseits am betreffenden Träger (15) zu befestigen, umfasst, wobei die lösbaren Befestigungsglieder (14) Bolzen sind.
  2. Bechermischer nach Anspruch 1, dadurch gekennzeichnet, dass die Zwischenklammer (16) L-förmig ist.
EP96101175A 1995-02-03 1996-01-29 Einrichtung zum Mischen und Fördern von Schüttgütern Expired - Lifetime EP0724940B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO950024U 1995-02-03
IT1995TO000024U IT235773Y1 (it) 1995-02-03 1995-02-03 Benna miscalatrice di aggregati solidi e distributrice del miscelato.

Publications (3)

Publication Number Publication Date
EP0724940A2 EP0724940A2 (de) 1996-08-07
EP0724940A3 EP0724940A3 (de) 1997-03-19
EP0724940B1 true EP0724940B1 (de) 2003-06-04

Family

ID=11413068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96101175A Expired - Lifetime EP0724940B1 (de) 1995-02-03 1996-01-29 Einrichtung zum Mischen und Fördern von Schüttgütern

Country Status (5)

Country Link
EP (1) EP0724940B1 (de)
AT (1) ATE242094T1 (de)
DE (1) DE69628476T2 (de)
ES (1) ES2090003T3 (de)
IT (1) IT235773Y1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2804361B1 (fr) * 2000-01-31 2002-05-03 Rabaud Sa Perfectionnements aux godets malaxeurs
FR2958865B1 (fr) * 2010-04-20 2012-05-11 Emily Ets Godet melangeur et/ou distributeur
CN108818926A (zh) * 2018-07-25 2018-11-16 徐州徐工养护机械有限公司 一种稳定土厂拌设备用搅拌刀
CN109291246A (zh) * 2018-11-21 2019-02-01 马鞍山迪斯福工业设计有限公司 一种建筑用喷浆设备及方法
CN110405943A (zh) * 2019-08-02 2019-11-05 张再兴 一种防止内壁粘留的混凝土搅拌装置
CN113441454B (zh) * 2021-06-21 2022-02-15 常州都铂高分子有限公司 一种水性粘合剂生产用原料清洗装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT352986B (de) * 1977-03-09 1979-10-25 Mathis Fertigputz Vorrichtung zur herstellung von angemachtem moertel od.dgl.
US4478515A (en) * 1983-09-27 1984-10-23 Stone Construction Equipment, Inc. Mortar mixer with triple eight mixing action
FR2581894B1 (fr) * 1985-05-17 1987-08-07 Bernard Francois Dispositif pour le malaxage ou le melange de produits pateux
US4660987A (en) * 1986-02-12 1987-04-28 Tci, Inc. Blender rotor improvements
US4896971A (en) * 1987-03-26 1990-01-30 General Signal Corporation Mixing apparatus
FR2666247B1 (fr) * 1990-08-28 1992-11-27 Audureau Sa Melangeuse a vis.

Also Published As

Publication number Publication date
EP0724940A2 (de) 1996-08-07
ITTO950024U1 (it) 1996-08-03
ES2090003T3 (es) 2004-03-16
IT235773Y1 (it) 2000-07-18
EP0724940A3 (de) 1997-03-19
DE69628476D1 (de) 2003-07-10
ES2090003T1 (es) 1996-10-16
DE69628476T2 (de) 2004-04-29
ATE242094T1 (de) 2003-06-15
ITTO950024V0 (it) 1995-02-03

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