EP3765182B1 - Mischvorrichtung mit verschlusselement - Google Patents

Mischvorrichtung mit verschlusselement Download PDF

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Publication number
EP3765182B1
EP3765182B1 EP19709922.9A EP19709922A EP3765182B1 EP 3765182 B1 EP3765182 B1 EP 3765182B1 EP 19709922 A EP19709922 A EP 19709922A EP 3765182 B1 EP3765182 B1 EP 3765182B1
Authority
EP
European Patent Office
Prior art keywords
mixing
closure element
emptying opening
container
closure
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.)
Active
Application number
EP19709922.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3765182A1 (de
Inventor
Christian Ott
Timo GÜNTHER
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.)
Maschinenfabrik Gustav Eirich GmbH and Co KG
Original Assignee
Maschinenfabrik Gustav Eirich GmbH and Co KG
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 Maschinenfabrik Gustav Eirich GmbH and Co KG filed Critical Maschinenfabrik Gustav Eirich GmbH and Co KG
Priority to PL19709922T priority Critical patent/PL3765182T3/pl
Publication of EP3765182A1 publication Critical patent/EP3765182A1/de
Application granted granted Critical
Publication of EP3765182B1 publication Critical patent/EP3765182B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B01F29/83—Mixers with rotating receptacles rotating about a substantially vertical axis with rotary paddles or arms, e.g. movable out of the receptacle
    • 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
    • B01F29/83—Mixers with rotating receptacles rotating about a substantially vertical axis with rotary paddles or arms, e.g. movable out of the receptacle
    • B01F29/835—Pan-type mixers, i.e. having stirrers moving along the bottom of a pan-shaped 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
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/32—Driving arrangements
    • B01F35/323—Driving arrangements for vertical stirrer shafts
    • 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
    • B01F35/40—Mounting or supporting mixing devices or receptacles; Clamping or holding arrangements therefor
    • B01F35/41—Mounting or supporting stirrer shafts or stirrer units on receptacles
    • 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
    • B01F35/45—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor
    • B01F35/451—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor by rotating them about an axis parallel to the plane of the opening
    • 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
    • B01F35/75—Discharge mechanisms
    • B01F35/751—Discharging by opening a gate, e.g. using discharge paddles
    • 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
    • B01F35/75—Discharge mechanisms
    • B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
    • B01F35/75455—Discharge mechanisms characterised by the means for discharging the components from the mixer using a rotary discharge means, e.g. a screw beneath 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
    • B01F35/75—Discharge mechanisms
    • B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
    • B01F35/7547—Discharge mechanisms characterised by the means for discharging the components from the mixer using valves, gates, orifices or openings

Definitions

  • the present invention relates to a mixing device with a container that can be rotated about a container axis for receiving material to be mixed, in the bottom of which there is a discharge opening, a rotatable mixing tool arranged inside the container, and a closure element for closing the discharge opening, the closure element for opening and closing of the discharge opening can be pivoted about a pivot axis, the closure element having an inner surface which is arranged inside the container when the discharge opening is closed, an outer surface which is arranged outside the container when the discharge opening is closed, and an edge surface which is arranged opposite an edge surface of the Discharge opening is arranged having.
  • closure element is often designed as a closure cover. However, this is not absolutely necessary.
  • the closure element could also be an element separate from the closure lid.
  • the invention is described below with reference to closure elements designed as closure lids. It goes without saying, however, that instead of a closure cover, a closure element can also be designed according to the invention, even if the design as a closure cover is preferred.
  • Such a mixing device is, for example, from WO 2011/128435 A1 famous.
  • Such a known mixing device is in the figures 1 and 2 played back. while showing figure 1 a mixing tank in a plan view. figure 2 shows a sectional view.
  • the cylindrical mixing container 1 has an overhung mixing tool 2 arranged eccentrically in the mixing container on a central shaft 3 with laterally arranged mixing blades 4 and a stationary wall/floor scraper 5 held vertically overhung from above. At the lowest wing level of the mixing tool 2, bottom knives 6 projecting vertically downwards are fastened and work at a small distance from the surface of the bottom of the container.
  • the emptying opening 7 is located in the center of the mixing container 1 .
  • the emptying opening 7 can be closed with the closing element designed as a closing cover 8 .
  • the closure cover 8 is connected to a support arm 10 via a bearing fork and the bearing pin 9 and is thus pivotable about the tilting axis of the bearing pin 9 .
  • the support arm 10 is rotatably supported via the pivot shaft 11 .
  • a restoring element not shown, ensures that the closure cover 8 assumes a specific position relative to the support arm 10 without the effects of external forces.
  • the closure lid 8 When the discharge port 7 is closed, i. H. the closure lid 8 is positioned within the emptying opening 7, the closure lid 8 closes flush with the bottom of the container. This forms a level floor surface on which the material to be mixed is moved. This ensures efficient mixing of the entire mixed material, since there is no dead space above the sealing cover that cannot be reached by the bottom blade 6 .
  • closure lid to be flush with the container base makes it difficult to design and guide the closure lid.
  • the cap would have to be moved linearly downwards to open the discharge opening.
  • this would mean that due to the arrangement of the discharge opening in the bottom of the container, the mixture would flow over all known surfaces of the closure lid and possibly even soil the drive of the closure lid.
  • the closure cover it is not possible for the closure cover to swing out of the emptying opening to the side because of the essentially cylindrical or truncated cone-shaped contact surfaces of the closure cover and emptying opening.
  • the drive of the closure lid which is in figure 2 is shown, a pivoting movement both about the axis 11 and about the axis 9.
  • the known closure lid is complex to manufacture and not easy to clean. Due to the rotary movement of the closure cap, the closure cap must have a certain amount of play within the emptying opening in order to be able to be pivoted out of the emptying opening. Through the resulting gap, mix components can escape from the hopper even when the discharge opening is closed. In addition, the cap must be cleaned very thoroughly after each emptying process to ensure that it can be repositioned in the opening and seals reliably. Furthermore, mixed material can accumulate in the area of the pivot axis 9 located below the closure lid and impede the pivoting process.
  • the material to be mixed flowing out of the discharge opening is discharged in a parabolic path by the pivoting movement of the closure lid in conjunction with the rotary movement of the mixing container flow out of the mixing tank.
  • the transfer box 12 located below the closure cover relatively large, which makes subsequent cleaning more difficult.
  • the lower outlet cross section of the transfer box 12 must be selected to be relatively large in order to enable a sufficiently steep outlet angle.
  • the large outlet cross-section makes it difficult to collect the mixed material in downstream containers, since these in turn have to be designed with large inlet cross-sections.
  • a mixing dryer designed as a ball mixer which consists of two half-shells. An outlet valve is arranged in the lower half-shell.
  • a mixer-dryer with a segmented ball valve is known.
  • the JP 2001 157832 A and the GB 1114175A also show devices with segmented ball type valves.
  • the object of the present invention is therefore to provide a mixing device of the type mentioned at the outset, which at least reduces the disadvantages described and enables the material to be mixed to be transferred over a relatively small cross section.
  • this object is achieved in that the closure element, emptying opening and pivot axis are designed and arranged in such a way that a point on the inner surface or the edge surface of the closure element that is furthest from the pivot axis describes a circle during the pivoting movement, with the closure element inside the circle and the edge surfaces of the discharge opening are located outside of the circle, with the closure element being flush with the bottom, so that a flat bottom surface results when the closure element is positioned in the discharge opening.
  • the closure element only has to be rotated about the pivot axis in order to close the emptying opening.
  • the discharge opening is designed and arranged in such a way that the edge surface of the discharge opening cannot collide with the closure element during the pivoting process.
  • a gap can remain within the discharge opening between the edge surfaces of the closure element and the edge surfaces of the discharge opening, but the width of the gap should be smaller than the smallest grain size of the mixed material to be processed in order to prevent the mixed material from flowing out of the mixing container into to avoid the closed position of the closure element.
  • the emptying opening and the closure element have mutually corresponding edge surfaces which come into contact with one another when the closing element is positioned in the emptying opening.
  • This measure ensures that no gap remains between the discharge opening and the closure element when the closure element is in the closed position.
  • edge surfaces of the closure element are curved in such a way that they lie on an imaginary sphere and the center point of the imaginary sphere lies on the pivot axis.
  • Such a design of the edge surfaces is similar to the structure of spherical segment slides.
  • Spherical segment gate valves serve as a shut-off device within dosing and supply lines.
  • the movable valve slides are designed in the shape of a spherical segment, i. H. Not only are the contact surfaces that come into contact with a corresponding valve seat curved, but the entire valve slide has the shape of a spherical cap. Apart from the fact that such a valve slide is not to be regarded as a sealing cover, it also does not allow a planar arrangement in the container base due to the shape of the hood.
  • the configuration according to the invention has the advantage that the closure cover can be easily pivoted about the pivot axis in order to close or open the emptying opening.
  • the mixing tool has a mixer shaft arranged parallel to the axis of rotation of the container and a plurality of vanes spaced apart from one another along the mixer shaft.
  • a mixing tool is already in the figures 1 and 2 shown.
  • disc-shaped mixing tools with, for example, V-shaped or U-shaped recesses on the outer circumference and pins or rod-shaped mixing elements protruding upwards or downwards out of the plane of the mixing tool can also be used.
  • At least one, preferably at least two, generally opposite bottom knives must be arranged on the end facing the bottom of all mixing tool geometries, which are at a small distance from the bottom of the mixing container or also through direct contact with it Material buildup on the bottom of the mixing tank and the cover remove by turning.
  • the bottom knives are usually arranged in such a way that they sweep over the axis of rotation of the mixing container and also of the closure lid.
  • the wings of the mixing tool with the bottom cutters 6 attached to them extend over the closure lid. Like that one in particular figure 2 can be seen, the situation can thus arise in which a wing of the mixing tool or a bottom knife attached to the wing is arranged directly above the closure lid. Because according to the invention the closure cap is pivoted about a pivot axis to open and close the discharge opening and the center point of the curvature of the edge surfaces of the closure cap lies on this pivot axis, when the closure cap is pivoted about the pivot axis, the edge surfaces will move along the surface of the imaginary sphere, i.e. on a run in a circular path.
  • the mixing device has a positioning device for the rotary positioning of the wings of the mixing tool and in particular the bottom knife relative to the discharge opening.
  • the mixing tool can then be adjusted in such a way that the parts of the mixing tool that could collide with the closure lid, i.e. in particular the bottom knife, are not in the area in which the closure lid performs its pivoting movement when opening.
  • the mixer shaft can first be brought into a position with the aid of the positioning device in which the sealing cover can be pivoted safely. It must be ensured that during the pivoting movement the parts of the mixer shaft that could collide with the cover are not moved into the pivoting range of the cover.
  • the positioning device has a device for determining the rotational position of the mixer shaft. Depending on the drive of the mixer shaft, it may not be possible to predict the current position of the mixing tool or the protruding elements or bottom knives on the mixer shaft. A positioning device can therefore be helpful in order to determine the current rotational position of the mixer shaft, and based on this determination the positioning device can then carry out the rotational positioning of the bottom cutters of the mixing tool relative to the discharge opening in order to enable the closure lid to be pivoted safely.
  • any sensor can be used to determine the rotary position.
  • Cams are particularly preferably arranged on the mixer shaft or on drive elements attached to it, such as V-belt pulleys, which are scanned with corresponding cam followers that interact with the cams, so that a mechanical, electrical or electromechanical query takes place.
  • a cam-shaped elevation can be arranged on the mixer shaft (or on a V-belt pulley attached thereto), which is positioned in such a way that when the stationary positioned cam follower detects the increase, it is ensured that the mixer shaft is in a position in which no bottom blade of the mixer shaft is in the pivoting range of the cover.
  • the cap can be opened or closed. If the cam follower does not catch the cam, the mixer shaft must be rotated further until the cam is caught.
  • the cams on the mixer shaft in such a way that when the cam follower detects a cam, the protruding components, such as the floor cutters, are arranged in such a way that the closure lid cannot be opened or closed.
  • the positioning device is designed in such a way that it can control and stop the rotary movement of the mixer shaft and/or the rotary movement of the mixing container.
  • the positioning device is able to position the mixer shaft in such a way that the closure lid can be pivoted safely. It can also ensure that this state is maintained during the opening and closing process.
  • FIG 3 a schematic sectional view of an embodiment of the mixing device according to the invention is shown.
  • a cylindrical mixing container 1 is provided, which can be rotated about an axis of rotation.
  • a mixing tool with a mixing shaft 3 is arranged inside the mixing container 1 .
  • a disc-shaped mixing tool 19 with pins protruding axially upwards and with bottom knives 6 protruding in the direction of the bottom container bottom is fastened to the mixing shaft 3 .
  • the mixing shaft 3 is driven by a motor 21 via a V-belt.
  • a V-belt pulley 16 is attached to the mixing shaft 3 for this purpose.
  • Magnets 17 are arranged on the V-belt pulley 16 and can be detected with a corresponding sensor 18 . In the example shown, the magnets 17 are arranged in the same plane in which both the axis of rotation of the mixing shaft 3 and the base knife 6 are arranged.
  • the corresponding magnets 17 could also, as also exemplified in figure 3 shown, be arranged directly on the mixing shaft 3.
  • the sensors 18 are read by a controller 20 which in turn drives the motor 21 .
  • the bottom of the container has an emptying opening 7 .
  • a closure cover 13 is arranged in the emptying opening 7 .
  • the cap 13 and the discharge opening 7 have mutually corresponding edge surfaces that come into contact with each other when the cap as in FIG figure 3 is positioned in the discharge opening 7 as shown. It can be seen that the closure lid 13 is flush with the bottom of the container, resulting in a flat bottom surface.
  • the edge surfaces of the closure cap 13 are curved in such a way that they lie on an imaginary sphere.
  • the closure cover 13 can be pivoted about a pivot axis 14 to open and close the emptying opening 7 .
  • the center point of the imaginary sphere lies on the pivot axis 14.
  • the closure cover 13 can be pivoted about the pivot axis 14 without having to be moved out of the emptying opening 7 beforehand.
  • the edge surfaces of the closure cap 13 move on the imaginary sphere 15. In figure 3 a situation is shown in which the closure cover 13 would collide with a base knife 6 when pivoted about the pivot axis 14 .
  • the position of the mixing shaft 3 is detected via the magnets 17 and sensors 18 and the movement of the mixing shaft 3 is controlled in such a way that the bottom cutters 6 are moved out of the pivoting range of the closure lid 13 so that then the cap 13 is safely opened or closed can be.
  • the magnets 17 and the sensors 18 instead of the magnets 17 and the sensors 18, corresponding cams and cam followers or any other sensors and corresponding counterparts could also be installed, as already described above, which make it possible to detect the rotational position of the shaft.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
  • Food-Manufacturing Devices (AREA)
EP19709922.9A 2018-03-16 2019-03-08 Mischvorrichtung mit verschlusselement Active EP3765182B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19709922T PL3765182T3 (pl) 2018-03-16 2019-03-08 Mieszalnik z elementem zamykającym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018106187.0A DE102018106187A1 (de) 2018-03-16 2018-03-16 Mischvorrichtung mit Verschlusselement
PCT/EP2019/055838 WO2019175048A1 (de) 2018-03-16 2019-03-08 Mischvorrichtung mit verschlusselement

Publications (2)

Publication Number Publication Date
EP3765182A1 EP3765182A1 (de) 2021-01-20
EP3765182B1 true EP3765182B1 (de) 2022-04-20

Family

ID=65724417

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19709922.9A Active EP3765182B1 (de) 2018-03-16 2019-03-08 Mischvorrichtung mit verschlusselement

Country Status (15)

Country Link
US (1) US20210008516A1 (pl)
EP (1) EP3765182B1 (pl)
JP (1) JP7250805B2 (pl)
KR (1) KR102643022B1 (pl)
CN (1) CN111867713B (pl)
BR (1) BR112020014375A2 (pl)
CA (1) CA3088245C (pl)
DE (1) DE102018106187A1 (pl)
ES (1) ES2914366T3 (pl)
PL (1) PL3765182T3 (pl)
PT (1) PT3765182T (pl)
RU (1) RU2768666C1 (pl)
UA (1) UA126530C2 (pl)
WO (1) WO2019175048A1 (pl)
ZA (1) ZA202005322B (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018106189A1 (de) * 2018-03-16 2019-09-19 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Hygienemischer

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* Cited by examiner, † Cited by third party
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SU77376A1 (ru) * 1949-02-01 1949-11-30 Н.И. Ткачев Смесительна машина
DE1296609B (de) * 1964-05-30 1969-06-04 Karl Haegele Dipl Ing Trog- oder Tellermischer
GB1114175A (en) * 1965-02-09 1968-05-15 Kelco Automation Ltd Improvements in or relating to mixing apparatus
US3434697A (en) * 1967-07-12 1969-03-25 A & R Meats Inc Mixing machine
JPS5246628A (en) * 1975-10-08 1977-04-13 Oshima Makoto Device for opening and closing door for taking out sandmill material
DE2903951C3 (de) * 1979-02-02 1985-01-03 Eirich, Hubert Vorrichtung zum Verschließen einer Entleerungsöffnung in einem Behälterboden
DE3520409A1 (de) * 1985-06-07 1986-12-11 Hubert Eirich Druckfester mischer
DE3838043C2 (de) * 1988-11-09 1998-07-30 Liebherr Mischtechnik Gmbh Zwangsmischer für körnige Stoffe
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DE19956939A1 (de) * 1999-11-26 2001-05-31 Eirich Maschf Gustav Vorrichtung und Verfahren zum Verschließen einer Entleeröffnung in einem drehenden Behälter
JP2001157832A (ja) * 1999-12-02 2001-06-12 Tookai:Kk 攪拌装置
JP2003088830A (ja) 2001-09-19 2003-03-25 Aichi Electric Co Ltd 廃棄物処理装置
AUPS270802A0 (en) * 2002-05-31 2002-06-20 Turnbull, Sam Dominic Seaton A screen/mixer
JP4417764B2 (ja) 2004-04-12 2010-02-17 株式会社冨士機 材料混合法及び混合機
DE202006003390U1 (de) 2006-03-03 2006-07-13 Mavag Ag Mischtrockner
DE102009044205A1 (de) * 2008-10-08 2010-05-12 Kalmbach, Gudrun, Prof. Dr. Mischvorrichtung für Malerfarben und Wandzusätze
DE102008054842A1 (de) * 2008-12-17 2010-07-01 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Mischer
DE102010027885A1 (de) 2010-04-16 2012-02-09 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Mischvorrichtung mit Verschleißschutzauskleidung
RU2476260C1 (ru) * 2011-08-31 2013-02-27 Открытое акционерное общество "Федеральный научно-производственный центр "Научно-исследовательский институт прикладной химии" Смеситель вязкотекучего материала
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CN105964182A (zh) * 2016-05-26 2016-09-28 镇江市经纬工程机械有限公司 一种搅拌机进料口封闭装置
CN106000168B (zh) * 2016-06-29 2018-04-03 无锡康柏斯机械科技有限公司 一种刹车片预混料锥形轴搅拌装置的搅拌方法

Also Published As

Publication number Publication date
CA3088245C (en) 2024-02-27
BR112020014375A2 (pt) 2020-12-01
RU2768666C1 (ru) 2022-03-24
EP3765182A1 (de) 2021-01-20
JP2021516606A (ja) 2021-07-08
JP7250805B2 (ja) 2023-04-03
CN111867713A (zh) 2020-10-30
ES2914366T3 (es) 2022-06-09
KR102643022B1 (ko) 2024-03-05
ZA202005322B (en) 2022-01-26
DE102018106187A1 (de) 2019-09-19
US20210008516A1 (en) 2021-01-14
PT3765182T (pt) 2022-05-20
CN111867713B (zh) 2022-09-16
CA3088245A1 (en) 2019-09-19
WO2019175048A1 (de) 2019-09-19
UA126530C2 (uk) 2022-10-26
KR20200126000A (ko) 2020-11-05
PL3765182T3 (pl) 2022-06-20

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