EP0105107B1 - Mischvorrichtung zur Herstellung von Mischungen - Google Patents

Mischvorrichtung zur Herstellung von Mischungen Download PDF

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Publication number
EP0105107B1
EP0105107B1 EP83107090A EP83107090A EP0105107B1 EP 0105107 B1 EP0105107 B1 EP 0105107B1 EP 83107090 A EP83107090 A EP 83107090A EP 83107090 A EP83107090 A EP 83107090A EP 0105107 B1 EP0105107 B1 EP 0105107B1
Authority
EP
European Patent Office
Prior art keywords
mixer
opening
mixture
mixtures
mixing
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
Application number
EP83107090A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0105107A2 (de
EP0105107A3 (en
Inventor
Paul Mathis
Max Zimmer
Franz Mathis
Bernhard Mathis
Udo Dilger
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.)
m-tec mathis technik GmbH
Original Assignee
m-tec mathis technik 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6174943&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0105107(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by m-tec mathis technik GmbH filed Critical m-tec mathis technik GmbH
Priority to AT83107090T priority Critical patent/ATE28408T1/de
Publication of EP0105107A2 publication Critical patent/EP0105107A2/de
Publication of EP0105107A3 publication Critical patent/EP0105107A3/de
Application granted granted Critical
Publication of EP0105107B1 publication Critical patent/EP0105107B1/de
Expired 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
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C9/00—General arrangement or layout of plant
    • 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
    • B01F35/71—Feed mechanisms

Definitions

  • the invention relates to a mixing and loading device for bulk goods, preferably dry mixtures, in particular based on mineral, organic or plastic such as dry mortar, concrete, animal feed, fertilizers, foodstuffs or the like, wherein mixtures of different compositions are produced and loaded in succession with a mixer , which has a lower emptying opening and which can be emptied without residue when changing the preparation of a mixture to another, with controlled metering devices for metering the mixture constituents into the mixer and with a self-cleaning transport device for conveying the finished mixture to a means of transport.
  • a mixing and loading device for bulk goods preferably dry mixtures, in particular based on mineral, organic or plastic such as dry mortar, concrete, animal feed, fertilizers, foodstuffs or the like, wherein mixtures of different compositions are produced and loaded in succession with a mixer , which has a lower emptying opening and which can be emptied without residue when changing the preparation of a mixture to another, with controlled metering devices for metering the mixture constituents into the mixer and
  • Such a mixing and loading device is known from DE-A-30 27 069. Especially when using this device in the manufacture of different ready-mixed mortars or the like. If this is done, stockpiling is carried out in the finished goods area, because a finished goods silo must be provided within the device for each type of mortar that has to be loaded in bulk. This allows different products to be mixed one after the other and temporarily stored in these finished goods silos. The associated dosing, mixing and transport devices must be cleaned between each product changeover. The residue-free emptying of the mixer takes place through complex measures such as cleaning by hand, with compressed air or the like.
  • a sufficiently inclined tube serves as a self-cleaning transport device for conveying the finished mixture to a vehicle-designed transport means, in which no mixture material can remain due to the inclined position.
  • the intermediate storage in finished goods silos also requires additional mechanical effort in the area of these silos, e.g. B. additionally an elevator for transporting up and from each silo a transport device, for example a transport screw or the like. to a loading point for vehicles.
  • a transport device for example a transport screw or the like.
  • Intermediate storage in storage silos has the sensitive disadvantage, especially with dry building material mixtures and especially with plasters and mortars, that the risk of segregation is increased, because with each transfer of such mixed material, the material parts occurring in the mixture with very different grain sizes can be separated from one another. Furthermore, these intermediate storage containers each require measuring or display devices which determine the respective loading quantity precisely regardless of the previous preparation of the mixture. In DE-A-30 27 069 an embodiment is shown in Fig. 3, in which different mixtures are to be produced in succession, so that intermediate storage silos are required.
  • the invention is based on the object, based on such a state of the art, of creating a mixing and loading device in which the outlay on equipment is reduced, while the means of transport are in any order with different mixtures which are not falsified in their composition by those previously prepared , can be loaded in quick succession.
  • the solution to this problem consists in a mixing and loading device of the type mentioned at the outset with a mixer with a lower discharge opening in that a drum-shaped batch mixer is provided as the mixer, the lower wall area of which can be opened completely for the discharge, in such a way that the discharge opening is dimensioned so large is that the opening angle is greater than the slope angle of the material to be mixed, so that the mixer is emptied without residue.
  • a batch mixer is known from CH-A-349 477, which has an opening on its lower wall area and a folding door closing it. However, nothing is given about the size of the opening angle and in particular its ratio to the size of the angle of repose of the mix. Due to the size relationships that result from the drawing of this document, it can be assumed that the opening angle is smaller than the slope angle of dry mix, since when the folding door is opened, mix would remain in the mixer housing next to the edges of the discharge opening.
  • a drum-shaped mixer with a polygonal cross-section of the mixer housing and two jaw-shaped opening slide valves is known, the entire mixer housing being rotated during the mixing process. It is a concrete mixing machine in which a mix is to be mixed with water, so that a material-specific slope angle is irrelevant. Furthermore, the problem is irrelevant that mixtures of different compositions should be able to be produced in succession without a previous mixture falsifying the composition of the next mixture.
  • the mixer is emptied without residues after it has been emptied, so that no additional effort is required to remove such residues.
  • a modified mixture can be produced immediately after emptying is not falsified by the previous mixture.
  • the mixing and loading device can thus be used for the production of different mixtures, although intermediate storage containers for receiving the different finished mixtures can still be dispensed with and yet any customer can receive the desired mixture in the correct quality in any order.
  • the discharge opening of the mixer can be arranged above or in a funnel with a closure for decelerated, also residue-free emptying, and below the funnel a mechanical or pneumatic conveyor, preferably a conveyor belt in a dustproof form or an air conveyor trough or the like, can be provided as the transport device.
  • An expedient embodiment of the invention can consist in that a conveyor screw is provided as the conveyor, parallel to which a lower-lying cleaning screw is arranged, which can be driven in the opposite direction during cleaning and then opens out via a waste container or the like. With normal transportation, the normal screw conveyor can thus bring the mixed good to its destination. However, since certain residues cannot be completely avoided when changing the mixing ratios in the area of screw conveyors, such a residue can also be eliminated by reversing the conveying direction with the aid of the cleaning screw, so that after a short time, no components from a previous mixture are present in the area of this conveyor there are more.
  • the transport device can be drivable in both directions of extension and act on at least two transfer devices. As a result, the entire mixing device can be used even more effectively because a second vehicle can already be brought into the loading position while a vehicle is being loaded.
  • the batch mixer can be arranged approximately horizontally. Its lower wall area can then be opened completely for emptying. If the bottom wall of such a batch mixer is opened or removed for opening, the entire mix slips out, since it cannot and cannot partially hold due to the angular relationships mentioned above.
  • An expedient embodiment of the invention can consist in that the lower wall area of the mixer can be closed by at least one flap or the like, preferably by two flaps which can be pivoted away from one another.
  • This allows a very simple opening downwards, through which the majority of the mixer contents are released downwards. Even the left-hand remnants of the material to be mixed cannot remain in the drum-shaped mixer, since they cannot form a sufficiently stable slope.
  • the lower opening area can comprise about a third of the entire mixer circumference and is in particular arranged in the middle. The lower wall area of the mixer, which does not belong to the opening and is close to the opening, is then already so steep that a dry mixture cannot remain there even in small residues.
  • the hinge or hinges of the lower opening flaps are expediently attached to the outside of the jacket of the mixer and the corresponding fittings on the outside of the opening flaps forming the lower part of the mixer wall, so that no projections or the like arise on the inside of the mixer, on which small, possibly small Mixed material residues could stick.
  • the inside of the opening flaps can be flush with the inside of the mixer wall.
  • the flap or the flaps can have the same radius of curvature and, in the closed position, the same center of curvature as the rest of the container wall, so that no irregularities occur in the interior of the batch mixer during the mixing process, which could adversely affect the mixing result.
  • the lower opening can extend up to the end walls of the mixer and these end walls can form the front or rear boundary of the lower opening. As a result, even in the front areas of the mixer, the formation of an edge on which the mixed material could remain avoided.
  • a mixing device designated as a whole by 1, contains in its interior metering devices 2, which feed various mixture components in the required quantities from corresponding containers with the interposition of control devices 3 and funnels 4 to a mixer 5 to be described in more detail.
  • this mixing device 1 It is characteristic of this mixing device 1 that no intermediate containers are provided, into which a finished mixture can be introduced until the changeover to a different mixture with the associated cleaning of the various units is worthwhile. Rather, the mixer 5 is designed as a horizontally arranged drum-shaped batch mixer that can be emptied without residue, the lower wall area of which, according to FIGS. 2 and 3, can be completely opened for emptying, the opening angle being greater than the slope angle of the mixed material. With each emptying, a residue of the mix is avoided in this mixer, so that now another composition of a mixture can be introduced and mixed. This makes it practically possible to produce a different mixture for each mixture after each batch by simply changing the metering and control devices accordingly. In this way, intermediate containers for the intermediate storage of various mixtures are unnecessary.
  • the opening angle of the batch mixer is greater than the slope angle of the residual mixture 6, which may otherwise remain between the wall 7 and the mixing blades 8 of the mixer 5 during the mixing process.
  • Fig. 1 it is also indicated that the emptying opening 9 of the mixer 5 is arranged above or in a funnel 10 with a closure 11 for decelerated emptying and that a conveyor belt 12, preferably a conveyor belt in dustproof form, is provided under the funnel 10.
  • the casing 13 of the conveyor belt 12 can be seen in a schematic arrangement in FIG. 1.
  • the funnel 10 can hold the contents of the batch mixer 5 in its interior, so that this mixed material can be slowly transferred to the conveyor belt 12.
  • the conveyor belt 12 can be driven in its two extension directions, so that two transfer devices 14, 18 can be loaded.
  • Fig. 1 can be seen in the left part of a direct transition from the conveyor belt 12 in a transfer device 14 with filling nozzle 15 to a vehicle 16, while the right part of the conveyor belt 12 opens out over another conveyor belt 17, which in turn can feed two places, namely a second transfer device 18 with filling nozzle 15 for a vehicle 19 or, in special cases, a transfer station 20 with which the mixed material can be transported further.
  • the lower wall area of the mixer 5 can be closed with at least one flap, closure or the like, in the exemplary embodiment with two flaps 21 which can be pivoted away from one another.
  • the lower opening area takes up about a third of the entire mixer circumference and is arranged in the center. It can clearly be seen that in the direct connection to the flaps 21 the cylindrical wall 7 of the mixer 5 is already so steep that dry mix can no longer attach and hold here when the flaps 21 are opened.
  • the mixers, which previously had openings in the lower area generally have openings which are so small that residual mixture can remain anywhere, which would then have to be discharged with special tools or with compressed air.
  • the hinges 22 running along the opening edges can advantageously be designed as a stiffener of the mixer 5 or vice versa, stiffeners can be arranged in this area, which at the same time accommodate or form the hinges 22 can be used. They are or the hinges 22 on the outside of the casing 7 of the mixer 5 and the corresponding fittings 23 on the outside of the opening flaps 21 forming the lower part of the mixer wall. If it is expedient for the stiffening of the mixer 5, in particular in the area of its large opening 9, the hinges 22 may also have corresponding counterparts on the mixer 5 itself for the fittings 23.
  • the opening flaps 21 are designed such that they are flush with the inside of the mixer wall 7 in the closed position with their inside. As a continuation of the mixer wall 7, they have the same radius of curvature and, in the closed position, the same center of curvature as the rest of the mixer wall.
  • a batch mixer 5 has been formed by relatively simple measures, which can be emptied without residues due to its large opening alone, without special additional tools, which in itself is a great advantage for different applications.
  • this mixing device can be converted economically from one mixture to another virtually without transition and without intermediate storage, so that two vehicles 16 and 19 can be filled in succession with different mixtures without it Interim storage mentioned needs.
  • the entire mixing device 1 thus becomes simpler and cheaper.
  • FIGS. 4 and 5 show an embodiment of the mixing device 1, in which, below the hopper 10, into which the mixer 5 is emptied, a conveyor screw 25 is also arranged as a conveying means within a dustproof housing 26, which in the exemplary embodiment has two transfer devices 14 for can operate two vehicles 16 and 19.
  • a screw conveyor can be used in this area of the device 1.
  • a cleaning screw 27 is located directly below it in a corresponding conical area parallel to this screw conveyor 25 28 of the housing 26 arranged.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Accessories For Mixers (AREA)
  • Confectionery (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Drying Of Solid Materials (AREA)
  • Detergent Compositions (AREA)
EP83107090A 1982-10-05 1983-07-20 Mischvorrichtung zur Herstellung von Mischungen Expired EP0105107B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83107090T ATE28408T1 (de) 1982-10-05 1983-07-20 Mischvorrichtung zur herstellung von mischungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3236780 1982-10-05
DE3236780A DE3236780C2 (de) 1982-10-05 1982-10-05 Misch- und Verladevorrichtung für Mischungen aus pulverigen und/oder körnigen Feststoffen

Publications (3)

Publication Number Publication Date
EP0105107A2 EP0105107A2 (de) 1984-04-11
EP0105107A3 EP0105107A3 (en) 1985-08-14
EP0105107B1 true EP0105107B1 (de) 1987-07-22

Family

ID=6174943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107090A Expired EP0105107B1 (de) 1982-10-05 1983-07-20 Mischvorrichtung zur Herstellung von Mischungen

Country Status (12)

Country Link
US (1) US4548507A (ja)
EP (1) EP0105107B1 (ja)
JP (1) JPS5966336A (ja)
KR (1) KR870000082B1 (ja)
AT (1) ATE28408T1 (ja)
AU (1) AU555362B2 (ja)
BR (1) BR8305464A (ja)
CA (1) CA1235688A (ja)
DE (2) DE3236780C2 (ja)
ES (1) ES525107A0 (ja)
SU (1) SU1535372A3 (ja)
ZA (1) ZA836413B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102922605A (zh) * 2012-11-14 2013-02-13 三一重工股份有限公司 搅拌站
CN104118059A (zh) * 2014-07-23 2014-10-29 浙江方远建材科技有限公司 一种彩砖颜料的混合上料装置

Families Citing this family (83)

* Cited by examiner, † Cited by third party
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KR840006616A (ko) 1984-12-01
AU1914483A (en) 1984-04-12
KR870000082B1 (ko) 1987-02-10
AU555362B2 (en) 1986-09-18
ES8404616A1 (es) 1984-05-16
CA1235688A (en) 1988-04-26
DE3372582D1 (en) 1987-08-27
ATE28408T1 (de) 1987-08-15
JPS5966336A (ja) 1984-04-14
DE3236780C2 (de) 1984-09-06
EP0105107A2 (de) 1984-04-11
EP0105107A3 (en) 1985-08-14
ES525107A0 (es) 1984-05-16
DE3236780A1 (de) 1984-04-05
ZA836413B (en) 1984-05-30
BR8305464A (pt) 1984-05-15
US4548507A (en) 1985-10-22
SU1535372A3 (ru) 1990-01-07

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