EP3445480A1 - Dispositif de dosage de matières solides, notamment de matière fibreuses - Google Patents

Dispositif de dosage de matières solides, notamment de matière fibreuses

Info

Publication number
EP3445480A1
EP3445480A1 EP17721969.8A EP17721969A EP3445480A1 EP 3445480 A1 EP3445480 A1 EP 3445480A1 EP 17721969 A EP17721969 A EP 17721969A EP 3445480 A1 EP3445480 A1 EP 3445480A1
Authority
EP
European Patent Office
Prior art keywords
metering
screw
trough
stirrer
agitator
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.)
Granted
Application number
EP17721969.8A
Other languages
German (de)
English (en)
Other versions
EP3445480B1 (fr
Inventor
Norbert Marek
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.)
Kubota Brabender Technologie GmbH
Original Assignee
Brabender Technologie 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 Brabender Technologie KG filed Critical Brabender Technologie KG
Publication of EP3445480A1 publication Critical patent/EP3445480A1/fr
Application granted granted Critical
Publication of EP3445480B1 publication Critical patent/EP3445480B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/60—Mixing solids with solids
    • B01F23/64—Mixing solids with solids using rotatable mixing elements at the lower end of discharge hoppers
    • 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
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • 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
    • B01F35/50—Mixing receptacles
    • B01F35/53—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components
    • 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
    • B01F35/754551—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 using helical screws
    • 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
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/892—Forming a predetermined ratio of the substances to be mixed for solid materials, e.g. using belts, vibrations, hoppers with variable outlets or hoppers with rotating elements, e.g. screws, at their outlet

Definitions

  • the invention relates to a device for metering solids, in particular fibrous materials such as natural fibers, glass fibers or carbon fibers, but also especially for the metering of recyclates such as edge trimmings in film extrusion,
  • fibrous materials are natural and artificial long fibers (1 to 50 mm in length), scrim or fabric pieces, pressed mats (pieces),
  • Recyclate materials eg. B. fiber-reinforced plastic recyclate.
  • the device should also be suitable for dosing other materials (powder, granules, fruit pieces).
  • Non-flowable materials do not get from the template to the discharge and to the discharge.
  • the fibrous materials agglomerate and the agglomerates cause an irregular flow of material.
  • damage or shortening of the fiber lengths may occur.
  • the further processing of the shortened fibers may, depending on the application, lead to the production of rejects.
  • Known Feststoffdosierella are severely limited in terms of specific dimensions (fiber lengths) of the fibrous material to be metered and require that the specific dimensions remain the same. Because of these problems, for some fibrous materials, especially fibers with lengths of more than 10 mm, there is still no suitable solids metering device in the prior art.
  • a device according to the preamble of claim 1 is known from US 3,529,870 A. There are differences with the following characteristics:
  • the dosing screw has no teeth.
  • Object of the invention With a device for metering solids, in particular fibrous materials such as natural fibers, glass fibers or carbon fibers, but also especially for the dosage of recyclates such as edge trimmings
  • stirrer (3) arranged below the inlet (1) with a horizontally arranged stirrer shaft (18) and with agitator blades (8),
  • stirrer (3) being surrounded by an asymmetrical stirrer trough (4), the metering auger (5) being surrounded by a part-cylindrical auger trough (11),
  • Partial cylindrical screw trough (11) connects
  • asymmetrical stirrer trough (4) and the part-cylindrical screw trough (11) is formed as an inclined plane in the form of a chute (13), so that one of the
  • the dosing space can be subdivided into three areas, which lie vertically one above the other,
  • central region (II) and the lower region (III) adjoin one another directly on the one side, so that a recess (27) is formed, on the other side the transition between the central region (II) and the lower region (III) is formed by an oblique plane which bears tangentially both on the walls (26) of the agitator trough (4) and on the walls of the worm trough (11),
  • the middle region (II) of the metering chamber is formed as a semi-cylindrical trough
  • chute (13) is formed by the oblique plane tangent to both the walls of the stirrer trough (4) and to the walls of the screw trough (11),
  • the metering screw (5) has teeth (23) on its outer circumference.
  • Discharge device The problem is solved according to the invention with the stirrer, the use of a metering screw with teeth as Austragsorgan and the
  • middle region (II) of the metering chamber is designed as a semi-cylindrical trough, no dead spaces are formed there. Corners and edges, where non-promoted material can accumulate, are also missing - unlike in the prior art.
  • Metering screw (5) is designed as a semi-cylindrical trough. The space swept by the impellers fills this area completely.
  • the area above this central area that is above the agitator shaft, has vertical walls.
  • the vertical walls immediately adjoin the upper edge of the semi-cylindrical trough. Due to the shape of the central region, bridging does not occur in this upper region and a "jogger" as in US 3,529,870 A is not necessary.
  • the lowermost region, namely the partially cylindrical screw trough is asymmetrical, with a free space (14) only on the side in which promotes the stirrer.
  • the semi-cylindrical space between the agitator shaft (3) and the dosing screw which is symmetrical except for a small area adjacent to the free space (14) on the metering screw.
  • the semi-cylindrical shape causes the interior of the device according to the invention is made considerably more compact.
  • the teeth (23) are designed to pull fibrous matter from the chute (13) into the dosing screw (5) without damaging or dissolving the fibrous matter.
  • the teeth (23) which are attached to the outer circumference of the metering screw (5) have a shape like the tilting vibrations in the electronics. That is, the front edge in the direction of movement falls steeply, the in
  • the invention in the promotion of fibers on forced delivery is set (agitator, dosing screw, speeds).
  • the invention is set as usual, that is without forced delivery.
  • the flow support becomes active through the stirrer (3) and passively through the stirrer
  • the separation of agglomerates is made possible by a special discharge.
  • the discharge element consists of a metering screw (5). It is provided according to the invention with teeth.
  • the discharge can optionally be optimized with a rotating impeller (7).
  • the impeller is driven either by a vertical outlet with drive or by a in the metering screw (5) inside the second shaft.
  • the delivery principle is based on the pressure of the inflowing fibers on the fibers lying in the chute.
  • the stirrer (3) pushes the fibers through the chute into the lateral intake area of the metering screw.
  • the upper area (I) has vertical walls (25),
  • the upper area (I) of the metering space has a rectangular cross-section
  • the agitator shaft (18) and the rotation axis (10) of the metering screw (5) are arranged vertically one above the other
  • the distance between the agitator shaft (18) and the rotational axis (10) of the metering screw (5) is adjustable, in particular by means of a height adjustment of the metering screw (5),
  • the worm (5) has an impeller (7) at the discharge end (16),
  • the ratio of the speeds of rotation of the metering screw is adjustable.
  • the metering device can be adjusted according to different fiber lengths of the material to be metered, in particular by means of the height adjustment of
  • Dosing screw to be adjusted.
  • the optimal, dependent on the metering distance between stirrer and metering screw can be adjusted.
  • the dosing screw consists of a shaft (also called soul) and the
  • Screw flight length The soul ends in front of the screw tube (or discharge tube). There is a central axial through cavity.
  • the cavity serves to reduce the material pressure in the screw tube by compression is caused. Furthermore, the cavity for the connection of the optional Abschunterstützung (impeller 7) is required.
  • Figure 1 is a perspective view of the entire inventive
  • Figure 2 is a perspective view of the entire inventive
  • FIG. 3 shows a vertical section through the device according to FIG. 1 perpendicular to the axis of rotation of the stirrer or metering screw, viewed from the front,
  • FIG. 4 shows a vertical section through the device according to FIG. 1, parallel to the axis of rotation of the stirrer or metering screw, seen from the right side,
  • FIG. 5 is a perspective view of the metering screw (5)
  • FIG. 6 shows a detail A from FIG. 5,
  • FIG. 7 is a schematic representation of the operation
  • FIG. 8 shows the flow of material by forcing the stirrer over the material in the chute.
  • FIG. 1 shows the entire device according to the invention.
  • the attachment container (1) is placed on a trough housing (2).
  • Stirrer trough (4) comprises the stirrer (3) and the partially cylindrical screw trough and the metering screw (5).
  • Stirrer (3) and metering screw (5) are set in rotation by one drive (9) or several drives.
  • On the front side sits on the screw tube (6) of the vertical outlet with drive (15).
  • Figure 2 shows the device according to the invention without the optional attachment container (1) and without the vertical outlet with drive (15).
  • FIG. 3 shows a sectional view from the front view.
  • the stirrer (3) promotes, from this direction in a clockwise direction, the material up to the metering screw (5).
  • the direction of rotation is determined by the asymmetrical design of the agitator trough (4).
  • the metering screw (5) conveys the material to be metered from the drawing sheet level. Stirrer (3) and metering screw (5) rotate in the same
  • Figure 4 shows a sectional view, in a view from the right side.
  • Stirrer (3) and the metering screw (5) can be driven by two individual drives or by an additional gear and a common drive.
  • the distance between stirrer (3) and metering screw (5) can be adjustable.
  • FIG. 5 shows the metering screw (5).
  • Dosing screw is provided with teeth (23).
  • the device according to the invention is used to supply solids to a process.
  • the process can be continuous or discontinuous.
  • the device according to the invention is particularly advantageous for the following branches of industry:
  • Step 1 The material to be dispensed is manually or through upstream
  • Step 2 The material is caught by the relatively slowly rotating stirrer (3).
  • Step 3 The teeth (23) on the dosing screw (5) are able to separate agglomerates and thus ensure a better filling of the dosing screw (5).
  • the material is conveyed in the axial direction through the screw tube to the end of the screw (16).
  • Step 4 The optional impeller (7) rotates at the discharge and supports the
  • the impeller (7) rotates in the direction of rotation (20) of the metering screw (5) and at a higher speed than the metering screw (5).
  • the teeth (23) engage and singulate individual fibers (24) of the fiber nugget.
  • the fibers (24) are pressed into the chute (13) via the stirrer.
  • Nachge arbitrtes material pushes the material in the slide to the discharge. This results in the advantageous asymmetrical design of the agitator trough (4) according to the invention and of the part-cylindrical screw trough (11) and the chute (13). Due to the lateral and large catchment area and the teeth of the dosing screw, it is optimally filled. Depending on the specific geometry of the material to be dosed, the height adjustment of the dosing screw can be used to determine the degree of filling of the dosing screw
  • the invention makes it possible to develop new fiber composite materials. It can also be used to advantage in recycled fiber composites because it is capable of metering high cost blank waste from fabric mats. The invention therefore has a high priority for the high technology industry.
  • the geometries of the metering screw and the conveyor are preferably matched to the metered solids and adapted to it.
  • the im Embodiment illustrated parts are only examples. Such geometric parameters are for example:
  • An asymmetrical trough 4 with a free space (14) is provided, wherein there are no dead spaces in the dosing space below the agitator shaft (18), except in the area of the dosing screw (space (14)).
  • the metering chamber has a rectangular cross-section and vertical walls above the agitator shaft (18).
  • a semi-cylindrical screw trough is provided below the agitator shaft (18) and above the metering screw (5), which is adapted to the rotating arms of the agitator shaft (18). In other words, the space swept by the stirrer blades (8) completely fills this area of the metering interior.
  • the vertical walls above the agitator shaft (18) connect directly to the semi-cylindrical trough (4) below the agitator shaft (18) and above the metering screw (5).
  • the asymmetry is provided essentially only in the area of the metering screw (5). That is, the portion of the metering screw below the stirrer is asymmetrical and has a free space (14) at the side into which the agitator is conveyed.
  • the stirrer (3) has such a direction of rotation (19), so that the product is first conveyed down into the space (14) and then to the metering screw (5).
  • the stirring blades (8) are wire-shaped.
  • a vertical outlet (15) with a drive and an impeller (7) is provided, wherein the impeller (7) rotates faster than the metering screw (5).
  • a central axial cavity is provided at the end of the metering screw.
  • Trough housing (optional)
  • the upper area of the dosing space the middle area of the dosing space, the lower area of the dosing space

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

L'invention concerne un dispositif de dosage de matières solides, notamment de matières fibreuses. Un dispositif de dosage de matières solides, notamment de matières fibreuses telles que des fibres naturelles, des fibres de verre ou des fibres de carbone, mais aussi surtout pour le dosage de produits de recyclage, tels que des rognages dans le cas d'extrusion de films, de recyclage de matières valorisables, etc. jusqu'aux poudres, caractérisé en ce que la zone centrale (II) du compartiment de dosage est conçue comme une cuve semi-cylindrique, que la chute (13) est formée par le plan incliné qui est en contact tangentiel tant avec les parois de la cuve de mélangeur (4) qu'avec les parois de la cuve à vis (11), et en ce que la vis de dosage (5) présente sur sa circonférence des dents.
EP17721969.8A 2016-04-22 2017-04-20 Dispositif de dosage de matières solides, notamment de matière fibreuses Active EP3445480B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016107559 2016-04-22
PCT/EP2017/059384 WO2017182564A1 (fr) 2016-04-22 2017-04-20 Dispositif de dosage de matières solides, notamment de matière fibreuses

Publications (2)

Publication Number Publication Date
EP3445480A1 true EP3445480A1 (fr) 2019-02-27
EP3445480B1 EP3445480B1 (fr) 2020-03-25

Family

ID=58672563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17721969.8A Active EP3445480B1 (fr) 2016-04-22 2017-04-20 Dispositif de dosage de matières solides, notamment de matière fibreuses

Country Status (2)

Country Link
EP (1) EP3445480B1 (fr)
WO (1) WO2017182564A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108584462A (zh) * 2018-03-30 2018-09-28 川田机械制造(上海)有限公司 一种助剂计量装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3548903A (en) * 1968-07-03 1970-12-22 Hollymatic Corp Subdivided meat mixer and method
US3529870A (en) 1968-07-16 1970-09-22 Homer G Woten Insulating machine
US4480927A (en) * 1982-05-28 1984-11-06 Butler Manufacturing Company Mixing apparatus and auger therefor
DE4124714A1 (de) 1991-07-25 1993-01-28 Schmolke Karl Heinz Aufloesewalzen fuer rotorspinnmaschinen
DE20214911U1 (de) * 2002-09-26 2003-01-02 Pölling, Hubert, 46325 Borken Vorrichtung zum Zerkleinern und Dosieren von organischen Feststoffen, wie Kompost oder Naturdünger, insbesondere für Biogas-Anlagen

Also Published As

Publication number Publication date
EP3445480B1 (fr) 2020-03-25
WO2017182564A1 (fr) 2017-10-26

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