EP0268991B1 - Vorrichtung zur Herstellung gebrauchsfertiger Mischungen aus in einem Silo bereitgehaltenem Schüttgut - Google Patents

Vorrichtung zur Herstellung gebrauchsfertiger Mischungen aus in einem Silo bereitgehaltenem Schüttgut Download PDF

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Publication number
EP0268991B1
EP0268991B1 EP87117023A EP87117023A EP0268991B1 EP 0268991 B1 EP0268991 B1 EP 0268991B1 EP 87117023 A EP87117023 A EP 87117023A EP 87117023 A EP87117023 A EP 87117023A EP 0268991 B1 EP0268991 B1 EP 0268991B1
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EP
European Patent Office
Prior art keywords
silo
outlet
shaft
mixing
tubular housing
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
EP87117023A
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German (de)
English (en)
French (fr)
Other versions
EP0268991A3 (en
EP0268991A2 (de
Inventor
August Tepe
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.)
Maschinen- und Apparatebau August Tepe GmbH
Original Assignee
Maschinen- und Apparatebau August Tepe 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.)
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6315049&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0268991(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Maschinen- und Apparatebau August Tepe GmbH filed Critical Maschinen- und Apparatebau August Tepe GmbH
Priority to AT87117023T priority Critical patent/ATE61966T1/de
Publication of EP0268991A2 publication Critical patent/EP0268991A2/de
Publication of EP0268991A3 publication Critical patent/EP0268991A3/de
Application granted granted Critical
Publication of EP0268991B1 publication Critical patent/EP0268991B1/de
Anticipated expiration legal-status Critical
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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
    • B28C9/00—General arrangement or layout of plant
    • B28C9/006—General arrangement or layout of plant comprising a multicompartment silo with the mixing device, e.g. a mixing screw, fitted directly at the underside of the silo, e.g. with proportioning means at the exit of the silo

Definitions

  • the invention relates to a device for producing ready-to-use mixtures from bulk material, such as e.g. Cement and sand, with a silo for mobile use with several chambers for separate intake of the different bulk goods, one silo outlet per chamber, one dosing device on each silo outlet for the metered discharge of the bulk material, one discharge opening of each dosing device at the assigned input opening of a one equipped with a mixed drive Mixing device can be connected.
  • bulk material such as e.g. Cement and sand
  • Such a device is known from EP-A-0 093 473, in which the metering devices are designed as screw conveyors, the axes of which extend transversely to the longitudinal direction of the silos, so that the screw conveyors discharge the bulk material from the chambers in an approximately horizontal direction when the silo is upright .
  • the screw conveyors are each connected to a conveyor drive, and one of the screw conveyors is axially coupled to a mixing device, so that the conveyor drive of this screw conveyor is identical to the mixer drive.
  • the entire weight of the bulk material columns above the metering devices rests on the transverse axes of the screw conveyors, the resulting pressure being transferred via the axes of the screw conveyors to the axle bearings, which are therefore subject to greater wear.
  • the metering devices below the silo outlets have a relatively large overall height; As the silos are transported lying flat on vehicles and the overall size of the silos is therefore limited, the overall height of the dosing devices is at the expense of the filling volume of the silos.
  • the object of the invention is therefore to develop a device of the type mentioned at the outset in such a way that it works more reliably and less prone to faults, with a reduced overall height of the metering devices, and permits the bulk material components to be dispensed independently of the mixer speed.
  • the metering devices are designed as cellular wheel sluices, each of which has a wheel chamber lying transversely to the longitudinal direction of the silo under the silo outlets and a cellular wheel in each wheel chamber, which is by means of a in the longitudinal direction of the silo stored and out of the wheel chamber stub shaft can be driven by a cellular wheel drive with adjustable speed.
  • the advantages of the invention are, in particular, that the bulk material columns do not exert any undesirable forces on the stub shafts aligned in the longitudinal direction of the silo. A heavy load on the axle bearings of the dosing devices is thus avoided.
  • the volume of the silo chambers can be increased accordingly with the same overall dimensions due to the flat overall height of the metering devices designed as cellular wheel sluices.
  • the device according to the invention each has an independent cellular wheel drive and an independent mixing drive for the mixing device, so that the quantity of the various bulk material components can be discharged independently of one another and independently of the mixer speed.
  • the bulk material emerging from the silo outlet flows into the metering devices in a continuous flow and is introduced in metered quantity immediately after leaving the metering devices into the mixing device.
  • ready-to-use mortar emerges from the mixing device, which is then ready for further processing at the construction site.
  • the device is ready for connections of current for the drive motors of the metering devices and the mixing device and the supply of water to the mixing device.
  • the metering device and the mixing device can remain connected to the construction site silo if the silo is picked up and transported away by a truck, for example for refilling. Immediately after the new construction site silo has been refilled, the device can be put back into operation in order to produce ready-to-use mixtures.
  • the metering devices in the form of cellular wheel sluices can divide the flow of bulk material continuously emerging from the silo outlet into smaller partial quantities, each partial quantity corresponding to the filling volume of one cell of the cellular wheel. Depending on the speed of rotation of the cellular wheel, a certain amount is therefore removed from the silo or fed to the mixing device in a certain time unit.
  • a cellular wheel sluice is structurally simple and operates relatively reliably. The dosage is relatively accurate and can be changed by changing the speed of the Cell wheel can also be changed easily.
  • the cellular wheel sluice advantageously forms a closure of the silo outlet at the same time, because the silo contents are only discharged when the cellular wheel rotates in the wheel chamber.
  • the cellular wheel sluice can be connected to a silo outlet in a structurally very simple manner.
  • the silo outlet has a flange to which the wheel chamber is flanged.
  • a cover plate covering the wheel chamber except for an outlet area is inserted in the silo outlet.
  • This cover plate can also be connected to the wheel chamber, so that the silo container itself remains essentially unchanged and only the cellular wheel sluice of the metering device is flanged together with the cover plate from the outside to the silo outlet.
  • Each cell wheel consists of a central disc and star-shaped, upright flat bars. Two adjacent flat bars each delimit a cell, the edges of the upstanding flat bars brushing closely against the upper and lower walls of the wheel chamber when the cell wheel rotates. If a cell passes under the inlet area in the cover plate, bulk material that slides out of the silo outlet enters the cell and is carried along by the rotating cell wheel.
  • each flat bar in the attachment area on the central disk runs obliquely against the direction of rotation and an outer in Section bent in the direction of rotation.
  • the portions of the bulk material carried along by the cellular wheel can fall out of the wheel chamber again, since a lower closure plate of the wheel chamber has an outlet which is equipped with an outlet flange.
  • the outlet flange serves to facilitate connection to the further devices connected downstream, such as the mixing device, which are designed as cellular wheel sluices.
  • the bulk goods located in the chambers of the construction site silo must be able to fall evenly out of the silo outlet so that a uniform loading of the metering devices designed as cellular wheel locks is guaranteed. Forming bridges in the bulk material would interfere with the required smooth wake of the bulk material.
  • at least one stirring finger protruding into the silo container is preferably arranged on the central disk of each cell wheel. During the operation of the metering devices, the agitator fingers rotate with the cell wheel, so that bulk material that slides in the area of the silo outlet is loosened continuously and can enter the cell wheel sluice in a steady flow.
  • the mixing device downstream of the metering devices has inlets which can be connected to the outlet flanges of the metering device by means of corresponding flanges.
  • the connection with flanges is sufficiently firm, so that on special brackets for attaching the mixing device on the silo can be omitted.
  • the mixing device preferably has a tube housing hanging approximately horizontally below the outlet flanges, in which a shaft driven by the mixer drive runs, the shaft being equipped with screw vanes in the sections corresponding to the inlets of the mixing device and in the adjoining section approximately radially projecting mixing vanes Has.
  • the screw vanes convey the bulk material quantities emerging from the outlets of the metering devices into the mixing area.
  • the mixing blades cause intensive mixing. Here, e.g. then, if mortar mixtures are to be produced, the required water is also added.
  • the finished mixture can emerge from the mixing device, since the tube housing has an end outlet at the front end, which corresponds to the section of the shaft with the mixing blades.
  • each mixing blade consists of pairs of tabs projecting radially from the shaft side by side, which are each connected to one another at the free ends by a bridge tab.
  • Each tab is set obliquely on the shaft with an angle of attack, so that during the revolutions of the shaft, the mixture to be produced is also conveyed in the longitudinal direction of the tube housing Mixing device takes place.
  • each bridge plate is placed between the plates with an angle of inclination, which makes the mixing of the mixture components more intensive.
  • the mixing blades are offset in the longitudinal direction of the shaft, which also contributes to improved mixing.
  • the mixing device At its end facing away from the end outlet of the tubular housing, the mixing device has the mixer drive motor with an associated gear for the shaft.
  • the drive motor and transmission preferably form a structural unit which is particularly advantageously hinged to a front end of the tubular housing. This makes cleaning the mixing device easier. After the unit formed from the drive motor and the gear unit has been folded down, the mixing device, in particular the tubular housing, can be sprayed out with water and thereby easily cleaned.
  • the shaft with the screw vanes and the mixing vanes can be inserted into the tubular housing and is non-positively connected to the gear unit when the drive motor is folded onto the tubular housing, since the gear unit has a plug-in coupling that can be operatively connected to the drive-side end of the shaft.
  • the tubular housing has, with particular advantage, a removable end plate in which the associated end of the shaft is mounted. After removing the end shield, the shaft can be pulled out of the tube housing, which makes cleaning and flushing the tube housing and shaft easier.
  • the transmission has a sealing flange on the output side and the tubular housing has an elastic sealing element at the end facing the sealing flange.
  • the drive unit can be locked by means of appropriate tensioning elements, closures or the like after it has been folded onto the tube housing, so that the sealing flange presses against the elastic sealing element of the tube housing.
  • FIG. 1 shows a construction site silo 1 in a schematic side view. It consists of an outer chamber 2 and an inner chamber 3 inserted therein. On the underside, the chambers 2, 3 have outlets 4, 5, from which the in the Chambers 2,3 stored bulk goods can leak. A metering device 6,7 is connected to the free ends of the outlets 4, 5. Each metering device has an outlet 8.9. Inlets 8, 11 of a mixing device are connected to the outlets 8, 9 and have a tubular housing 13 in which the bulk material components removed from the silo are mixed when mechanically movable mixer elements located in the tubular housing 13 by means of a transmission 37 and motor 36 Mixer drive are moved.
  • FIG. 2 shows a schematic sectional view of the silo outlets 4, 5.
  • Each silo outlet is equipped with an outlet flange 16, 17 at the free end.
  • Each outlet flange serves to flange a metering device 6, 7 (FIG. 1) onto the respective silo outlet. Since the metering devices 6, 7 are of identical design, the structure and the mode of operation of the metering devices are described below using the exemplary embodiment of the metering device 7 assigned to the silo outlet 4, which is visible here on the right-hand side of the drawing.
  • the metering device 7 of the silo outlet 4 consists of a cellular wheel sluice which comprises a wheel chamber 18 which can be flanged in front of the outlet flange 17 of the silo outlet 4 and in which a cellular wheel 19 is rotatably arranged.
  • a cover plate 21 which covers the wheel chamber 18 except for an inlet region 20.
  • Each cellular wheel 19 consists of a central disc 22 and star-shaped, upright flat bars 23. In the area above the central disc, the cover plate 21 has the shape of a cone protruding into the silo outlet.
  • a lower closure plate 25 of the wheel chamber 18 is equipped with a bearing 24 for the central disk 22, so that a shaft end 27 located on the driven side of a gear 26 which can be flanged under the closure plate 25 can rotate the central disk and thus the cellular wheel 19.
  • an electric motor provided for driving the cellular wheel is designated.
  • the closure plate 25 of the wheel chamber 18 has the outlet 9, which is equipped at the free end with an outlet flange.
  • the inlet 11 of the mixing device 12 (FIG. 1) is placed with a corresponding flange on the outlet flange 29 of the outlet 9 of the metering device 7.
  • the second outlet 5 of the silo is equipped with an identical metering device and is not described here in detail.
  • the outlet 8 of this metering device of the outlet 5 is also connected to an inlet 10 of the mixing device 12.
  • the tube housing of the mixing device is designated 13.
  • a rotatably driven shaft runs in the tubular housing 13 and is equipped with screw blades in the section corresponding to the inlets 10, 11 and mixing blades which project approximately radially in a subsequent section 32 has.
  • the tubular housing has an end outlet 33.
  • Each mixing blade consists of pairs of tabs 34 which project radially from the shaft and which are connected to each other at the free ends by a bridge tab 35 aligned parallel to the longitudinal axis of the shaft. As shown in FIG. 2, each tab 34 is set at an angle on the shaft 30. Each bridge plate 35 is placed between the plates 34 at a certain angle of inclination. In addition, the mixing blades are offset in the longitudinal direction of the shaft.
  • a drive motor 36 forms with its gear 37 for the shaft a mixer drive hinged to one end of the tubular housing 13.
  • the folding mechanism is not shown here, but can be designed as a simple hinge.
  • the transmission 37 has on the output side a plug-in coupling which can be brought into operative connection with the drive-side end of the shaft 30.
  • the gear 37 has a sealing flange 39 on the output side.
  • the tubular housing 13 has at its end facing the sealing flange 39 an elastic sealing element 40 with which the sealing flange 39 of the gear comes into contact.
  • FIG. 3 shows a plan view of a wheel chamber 18 of the metering device 7, which is open at the top, in order to clarify the design of the metering device 7.
  • the edge 41 of an additional cover plate, which delimits the inlet area into the metering device 7, is indicated on the side of the curved double dashed line.
  • the central disk 22, which is seated on the shaft end 27, carries the star-shaped, upright, flat bars 23. Each flat bar is oriented obliquely in the attachment area on the central disk against the direction of rotation and has an outer section bent in the direction of rotation. These sections of the flat bars protruding under the central disk 22 delimit a cell with a constant volume.
  • Each cell between two flat bars 23 passing the inlet area is filled with bulk material trailing out of the silo.
  • the bulk material flow from the silo is continuously broken down into equal parts.
  • the partial quantities successively fall into the outlet 9 and, as described above, reach the mixing device for further processing

Landscapes

  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
EP87117023A 1986-11-28 1987-11-19 Vorrichtung zur Herstellung gebrauchsfertiger Mischungen aus in einem Silo bereitgehaltenem Schüttgut Expired - Lifetime EP0268991B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87117023T ATE61966T1 (de) 1986-11-28 1987-11-19 Vorrichtung zur herstellung gebrauchsfertiger mischungen aus in einem silo bereitgehaltenem schuettgut.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863640766 DE3640766A1 (de) 1986-11-28 1986-11-28 Vorrichtung zur herstellung gebrauchsfertiger mischungen aus in einem silo bereitgehaltenem schuettgut
DE3640766 1986-11-28

Publications (3)

Publication Number Publication Date
EP0268991A2 EP0268991A2 (de) 1988-06-01
EP0268991A3 EP0268991A3 (en) 1989-04-05
EP0268991B1 true EP0268991B1 (de) 1991-03-27

Family

ID=6315049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117023A Expired - Lifetime EP0268991B1 (de) 1986-11-28 1987-11-19 Vorrichtung zur Herstellung gebrauchsfertiger Mischungen aus in einem Silo bereitgehaltenem Schüttgut

Country Status (3)

Country Link
EP (1) EP0268991B1 (enrdf_load_stackoverflow)
AT (1) ATE61966T1 (enrdf_load_stackoverflow)
DE (2) DE3640766A1 (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3741052A1 (de) * 1987-12-04 1989-06-15 Silo Estrich Gmbh & Co Vertrie Vorrichtung zur herstellung von verarbeitungsfertigem moertel, estrich o. dgl.
DE3841146C1 (enrdf_load_stackoverflow) * 1988-12-07 1990-02-08 Maschinen- Und Apparatebau August Tepe Gmbh, 2848 Vechta, De
ES2020794A6 (es) * 1990-10-04 1991-09-16 Madera Iglesias Jose Ramon Planta movil para la dosificacion y amasado de hormigon seco a granel u otros productos granulados.
DE4141068C2 (de) * 1991-12-13 1996-02-01 Masch Und Apparatebau A Tepe Mobile Betonmischanlage
US5624183A (en) * 1993-03-29 1997-04-29 Schuff; David A. Apparatus for metering and mixing aggregate and cement
US5785420A (en) * 1993-03-29 1998-07-28 Schuff; David A. Apparatus for metering and mixing aggregate and cement
IT202100010937A1 (it) * 2021-04-29 2022-10-29 Ziche Investimenti S R L Sistema perfezionato per la produzione di materiali da costruzione

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR955060A (enrdf_load_stackoverflow) * 1950-01-07
DE660006C (de) * 1936-05-06 1938-05-14 Anton Seelmann U Soehne G Regelbare Zuteileinrichtung fuer Zement o. dgl.
BE495828A (enrdf_load_stackoverflow) * 1950-03-31
CH339550A (de) * 1956-03-19 1959-06-30 Egli & Erbes Betonaufbereitungsanlage
US3967815A (en) * 1974-08-27 1976-07-06 Backus James H Dustless mixing apparatus and method for combining materials
DE3013280C2 (de) * 1980-04-05 1983-11-17 Mathis System-Technik Gmbh, 7801 Merdingen Vorrichtung zur insbesondere kontinuierlichen Herstellung von angemachtem Mörtel o.dgl.
DE3031219C2 (de) * 1980-05-27 1983-10-06 Aliva AG, 8967 Widen, Mutschellen Materialzuspeiser für Anlagen zum pneumatischen Fördern von Schüttgütern
US4427297A (en) * 1982-04-16 1984-01-24 Cemen-Tech, Inc. Concrete ingredient metering device
FI75518C (fi) * 1982-04-30 1988-07-11 Janssen Wilhelmus Gerardus E Anordning foer framstaellning av murbruk.
LU85282A1 (fr) * 1984-04-02 1985-11-27 Jacques Gilson Dispositif de malaxage et de dosage

Also Published As

Publication number Publication date
EP0268991A3 (en) 1989-04-05
DE3768916D1 (de) 1991-05-02
ATE61966T1 (de) 1991-04-15
DE3640766A1 (de) 1988-06-01
DE3640766C2 (enrdf_load_stackoverflow) 1989-10-12
EP0268991A2 (de) 1988-06-01

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