EP0121581B1 - Procédé pour réduire la teneur en agglomérés de flocs avec de faibles pertes et dispositif correspondant - Google Patents

Procédé pour réduire la teneur en agglomérés de flocs avec de faibles pertes et dispositif correspondant Download PDF

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Publication number
EP0121581B1
EP0121581B1 EP83103329A EP83103329A EP0121581B1 EP 0121581 B1 EP0121581 B1 EP 0121581B1 EP 83103329 A EP83103329 A EP 83103329A EP 83103329 A EP83103329 A EP 83103329A EP 0121581 B1 EP0121581 B1 EP 0121581B1
Authority
EP
European Patent Office
Prior art keywords
container
dosing
flock
flap
brush
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
EP83103329A
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German (de)
English (en)
Other versions
EP0121581A1 (fr
Inventor
Helmut Esch
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.)
Individual
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Individual
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 Individual filed Critical Individual
Priority to AT83103329T priority Critical patent/ATE23955T1/de
Priority to DE8383103329T priority patent/DE3368021D1/de
Priority to EP83103329A priority patent/EP0121581B1/fr
Publication of EP0121581A1 publication Critical patent/EP0121581A1/fr
Application granted granted Critical
Publication of EP0121581B1 publication Critical patent/EP0121581B1/fr
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/16—Flocking otherwise than by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
    • B05C19/001—Flocking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
    • B05C19/06—Storage, supply or control of the application of particulate material; Recovery of excess particulate material

Definitions

  • the invention relates to a method for low-loss reduction of lumps of flock from a dosing container for flock equipped with a brush that moves at least one dosing sieve, and a dosing device for this purpose according to the preamble of claim 3.
  • the flock metered with such devices often has the property of clumping into lumps and thereby disrupting proper metering.
  • such dosing devices accumulate in the lower sieve area of such metering devices that the metered amount of meterable flock is impaired in such a way that a uniform trickling is no longer possible.
  • the plant must be continuously increased in speed according to the accumulating amount of lumps so that the necessary amount of flock can be drained off.
  • there is a risk that such clumped material will be pressed as partial lumps through the metering sieve, so that the material to be flocked is flocked incorrectly at these points.
  • a metering device of the flocking system is shut down in relatively short time intervals in the prior art and the contents of the metering device including the flock lumps are taught. Then the dosing device is filled again and put into operation again.
  • the invention is based on the object of proposing a method and the device suitable for this purpose with which it is possible to avoid such interruptions in operation and at the same time to reduce the reject rate.
  • this object is achieved on the basis of a method of the type described in the introduction in that the lumps of floc are swept out of the brush into a waste container via a temporarily open gap in the container.
  • the lumps of floc are swept out of the brush into a waste container via a temporarily open gap in the container.
  • This is the point in time at which a gap is opened at a suitable point in the container, so that in the gap region the brushes in the dosing container sweep the flock in front of it into the spa. This also sweeps the lumps of floc into the gap and thus into the waste container.
  • the inevitable loss of meterable flock is relatively low.
  • the gap in the container can be closed again and further sweeping is stopped.
  • the dosing of the flock continues, of course.
  • the normal dosage is not affected by the information measures. It is thus possible without interruption of the metering operation and, at the same time, to avoid rejects, to free the metering container again and again from the clumps of flock which accumulate. Changes in the operating speed of the dosing device or downtimes and cleaning times are not necessary.
  • the filling of the waste container is conveyed into a separating device, from which the unclumped flock is conveyed back into a storage container or into the dosing container.
  • a separating device from which the unclumped flock is conveyed back into a storage container or into the dosing container.
  • a metering device is suitable for carrying out the method according to the invention, in which a container side wall has a movable flap which extends over the entire width of the room and with which the container can be opened and closed in its lower region. This creates the necessary gap opening for sweeping in a very simple manner.
  • the screen is followed by a baffle which overlaps the flap and on which the flap rests from the outside when the container is closed.
  • This baffle is, so to speak, the collection and sweeping point for the lumps of flock.
  • the described overlap prevents the flock lumps from being caught incorrectly.
  • the arrangement of the flap in the open state ensures that the relatively heavy lumps of fluff fall off easily.
  • the subsequent closing process is also problem-free due to the overlapping arrangement and, moreover, particularly precise dimensional adjustments of the individual components are avoided, which makes it simple, reliable and cost-effective production is made possible.
  • the flap is attached to the side wall of the container by means of a pivot hinge. This is the structurally simplest and cheapest. at the same time the most reliable way to make the flap movable in the necessary manner.
  • a power-operated drive device is provided for the movement of the flap. This makes it possible to have the flap actuated either by automatic control or by manual control.
  • Another embodiment of the invention provides that the flap is under the preload of a spring in the closing direction. As a result, the flap can always be kept reliably closed even when, for. B. in the case of the power-operated drive device, the drive energy fails.
  • the power-operated drive device is a fluid-driven piston-cylinder unit. This has proven to be the simplest actuation solution.
  • Another embodiment of the invention in turn provides that the piston of the piston-cylinder unit is under the preload of a spiral compression spring. In this way, the control effort can be reduced and at the same time a reliable closing of the flap is achieved in the event of a power failure.
  • Another embodiment of the invention provides that a waste container is arranged below the gap to be opened. This enables the targeted collection of the falling goods.
  • devices are provided for conveying the goods entering the waste container from the waste container.
  • Such facilities could e.g. B. screw conveyors or transport chains running through the container with scraper or cups. Any funding that is capable of conveying the goods in the container is suitable per se.
  • the material conveyed in this way can then be conveyed, for example, into a separating device in which the lumps of floc are separated from the still dosed flock, in which case the lumps of flock can be transported into the waste, while the dosed flock can be fed back into a corresponding storage container or directly back into the dosing device can be.
  • the metering device 1 consists essentially of a container 2 with the container side walls 6 and 6 ', which has a sieve 3 on its underside 4. Angled guide walls 14 and 15 are arranged opposite the sieve 3, which come to rest on the one hand on the side walls 6 and 6 'and on the other hand form an inlet opening 7. The bulk material to be dosed is continuously filled into this inlet opening 7 in the direction of fall 18.
  • a brush roller in the exemplary embodiment, consisting essentially of a shaft 8, which is mounted on the end walls of the container 2 so as to be rotatably drivable, on which brush strip carriers 11 are arranged so as to be non-rotatably connected to the shaft 8, on which in the circumferential direction around the shaft 8 evenly distributed brush strips 10 with substantially radially directed bristles 9 are arranged and fastened parallel to the shaft 8.
  • Such a brush roller 5 turns during operation in the direction of arrow 12 so that the bulk material filled through the inlet opening 7 is carried along by the bristles 9 and the brush strips 10 and placed on the sieve 3 of the container and by the bristles which continue to run 9 is passed through the sieve.
  • the scraper edge of the scraper 16 which is also parallel to the shaft 8, simply scrapes off excess bulk material, so that the chambers formed by the brush strips 10 and the bristles 9 arranged thereon then pass through the scraper 16 and its scraper edge 17 in the direction of rotation always have the same level. Due to the effect of the scraper 16, it can now be safely taken care of a permanent overfilling, which also eliminates the risk of underfilling.
  • the brush strips 10 can the brush strip holders 11 of the brush 5 are removed and turned or exchanged for other brush strips, for example with different bristles 9 or a different length of the bristles 9.
  • the metering device 1 can be set up for different bulk goods or different bulk goods quality, or worn bristle strips can be exchanged very simply.
  • the scraper 16 can be arranged movably on the guide wall 14, so that the position of the scraper edge 17 can be changed.
  • a movable flap 22 is provided between the side wall 6 of the container and the baffle 23, which is now opened around the gap 20, so that the rotating brush 5 passes the lumps 19 through the gap 20 into the waste container 21 arranged underneath, but in any case from the dosing container 2 comes out.
  • the transport bw. Falling direction of the flock lumps 19 is indicated by the arrows coming from the inside of the container.
  • the movable flap 22 is fastened via a pivot hinge 24, one flap of which is fastened to the container side wall 6 and the other flap of which supports the movable flap 22.
  • the movable flap can be actuated, for example, by hand using the hand lever 29, which has to be moved in the direction of arrow 30 against the force of the spring 27 in order to open the movable flap 22. If you let go of the hand lever 29, the force of the spring 27 ensures that the movable flap 22 is closed again.
  • actuation of the movable flap 22 can also be provided via the power-operated drive device 25.
  • a compressed air-actuated piston-cylinder unit is particularly suitable for this purpose, in which, for example, the cylinder 31 is movably attached to the container side wall 6, while the end of the piston rod 32 is movably connected to the movable flap 22 by means of corresponding fastening means.
  • the piston 28 is under the preload of the spring 26, so that the movable flap 22 is closed again by this spring 26 via the piston rod 32 in the event of a power failure or when the energy is switched off.
  • a corresponding control pulse goes from the control unit 36 via the line 35 to the valve 33, which is hereby brought into the switching position shown in FIG. 4, whereby the line 37 is connected to the pressure source 34, which causes the cylinder 31 is supplied with compressed air from the piston rod side.
  • the piston 28 and thus also the piston rod 32 move into the cylinder 31, thereby opening the movable flap 22 and tensioning the spring 26.
  • a control pulse is sent again from the control unit 36 via the line 35 to the valve 33, which is thereby switched to the second switching position, whereby the pressure source 34 is shut off and the line 37 is connected to the atmosphere.
  • the spring 26 can now move the piston 28 and thus also the piston rod 32 in the opposite direction, as a result of which the movable flap 22 is closed again.
  • the sweeping process collects in the waste container 21, which in the exemplary embodiment is channel-shaped, both still meterable bulk material and also lumps of floc. It is therefore useful to further reduce loss, this waste container 21 manually or by an appropriate conveyor, such.
  • B. a screw conveyor or other suitable conveyor to be emptied regularly, preferably in a suitable separating device, in which, for example, the lumps of floc are separated from the still meterable flock, so that the still meterable flock can be conveyed back immediately into a storage container or directly into the dosing container 2.
  • This can limit the loss to the unusable lumps.
  • this makes it possible to actuate the movable flap 22 generously so that the dosing space remains as free as possible from lumps of floc.
  • the entire dosing device 1 described is part of an overall system for coating any surfaces, for. B. for coating carpets, wallpapers or other surfaces with rod-shaped bulk material, preferably with so-called. Flock, in which the rod-shaped bulk material is aligned after being passed through the sieve 3 of the metering device 1 in an electrostatic field and processed further in this aligned state.
  • the application of the concept of the invention in such a device enables uninterrupted operation for the first time and ensures a uniform flocking quality and at the same time minimizes rejects.

Landscapes

  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Processing Of Solid Wastes (AREA)
  • Adjustment And Processing Of Grains (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (11)

1. Procédé pour réduire la teneur en agglomérés de flocs avec de faibles pertes, dans un récipient doseur (2) de flocs équipé d'une brosse (5) balayant au moins un crible doseur, caractérisé en ce que les agglomérés de flocs (19) sont chassés par balayage par la brosse (5) dans un réservoir à déchets (21), à travers une fente (20) aménagée dans le récipient (2) et s'ouvrant par intermittence.
2. Procédé selon la revendication 1, caractérisé en ce que le contenu du réservoir à déchets (21) est envoyé dans un dispositif séparateur à partir duquel les flocs non agglomérés sont recyclés dans un réservoir de pré-stockage dans le récipient doseur (2).
3. Dispositif doseur pour la mise en couvre du procédé selon les revendications 1 et 2, comportant un récipient (2). pourvu d'un crible (3) disposé sur le côté inférieur du récipient pour laisser passer des flocs tombant en vrac sous forme de bâtonnets, d'une brosse (5) qui peut être entraînée à l'intérieur du récipient (2) en s'étendant sur toute la largeur de celui-ci et qui comporte plusieurs balais qui portent des poils orientés dans une direction sensiblement radiale, tout en étant répartis à intervalles uniformes sur la circonférence, et qui sont retenus dans des porte-balais, et d'une ouverture d'introduction de la matière en vrac, située à l'opposé du crible dans le récipient et formée par des parois de guidage de manière à présenter des zones s'ouvrant vers le haut, caractérisé en ce qu'une paroi latérale (6) du récipient présente un volet mobile (22) qui s'étend sur la largeur entière de l'enceinte et au moyen duquel le récipient (2) peut être ouvert et fermé dans sa partie inférieure.
4. Dispositif doseur selon la revendication 3. caractérisé en ce qu'au crible (3), se raccorde une tôle de guidage (23) qui chevauche le volet (22) et contre laquelle le volet (22) vient s'appliquer de l'extérieur lorsque le récipient (2) est fermé.
5. Dispositif doseur selon la revendication 3 ou 4, caractérisé en ce que le volet (22) est fixé par l'intermédiaire d'une charnière pivotante (24) à la paroi latérale (6) du récipient (2).
6, Dispositif doseur selon l'une des revendications 3 à 5, caractérisé en ce qu'un dispositif d'entraînement (25) à actionnement mécanique est prévu pour le déplacement du volet (22).
7. Dispositif doseur selon l'une des revendications 3 à 6, caractérisé en ce que le volet (22) est soumis, dans le sens de la fermeture, à la précontrainte d'un ressort (26, 27).
8. Dispositif doseur selon l'une des revendications 3 à 7, caractérisé en ce que le dispositif d'entraînement (25) à actionnement mécanique est un groupe à piston et cylindre mû par fluide.
9. Dispositif doseur selon la revendication 8, caractérisé en ce que le piston (28) du groupe à piston et cylindre est soumis à la pré-contrainte d'un ressort de poussée hélicoïdal (26).
10. Dispositif doseur selon l'une des revendications 3 à 9, caractérisé en ce qu'en dessous de la fente (20) destinée à s'ouvrir, est monté un réservoir à déchets (21).
11. Dispositif selon l'une des revendications 3 à 10, caractérisé en ce qu'il est équipé de dispositifs pour extraire et convoyer la matière tombée dans le réservoir à déchets (21) hors de celui-ci.
EP83103329A 1983-04-06 1983-04-06 Procédé pour réduire la teneur en agglomérés de flocs avec de faibles pertes et dispositif correspondant Expired EP0121581B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT83103329T ATE23955T1 (de) 1983-04-06 1983-04-06 Verfahren zur verlustarmen verminderung von flockkluempchen und dosiereinrichtung hierzu.
DE8383103329T DE3368021D1 (en) 1983-04-06 1983-04-06 Process for diminishing flock balls with low waste, and dosing device therefor
EP83103329A EP0121581B1 (fr) 1983-04-06 1983-04-06 Procédé pour réduire la teneur en agglomérés de flocs avec de faibles pertes et dispositif correspondant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83103329A EP0121581B1 (fr) 1983-04-06 1983-04-06 Procédé pour réduire la teneur en agglomérés de flocs avec de faibles pertes et dispositif correspondant

Publications (2)

Publication Number Publication Date
EP0121581A1 EP0121581A1 (fr) 1984-10-17
EP0121581B1 true EP0121581B1 (fr) 1986-12-03

Family

ID=8190395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83103329A Expired EP0121581B1 (fr) 1983-04-06 1983-04-06 Procédé pour réduire la teneur en agglomérés de flocs avec de faibles pertes et dispositif correspondant

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EP (1) EP0121581B1 (fr)
AT (1) ATE23955T1 (fr)
DE (1) DE3368021D1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8215591U1 (de) * 1982-10-14 Esch, Helmut, 5166 Kreuzau Dosiereinrichtung
DE1070132B (de) * 1959-12-03 Arno H. Wirth, Reutlingen (Württ.) Verfahren und Vorrichtung zum elektrostatischen Beflocken
US2573952A (en) * 1948-07-29 1951-11-06 Thomas O Bretherton Apparatus for depositing strips of adhesive upon a base material
US3375124A (en) * 1963-11-07 1968-03-26 Linneborn Walter Method and apparatus for electrostatically applying flock to filament material
FR1478383A (fr) * 1965-12-29 1967-04-28 Procédé et dispositif pour la distribution de fibres, produits non tissés, pour machine à floquer
DE2740261C2 (de) * 1977-09-07 1982-10-07 Joachim 6470 Büdingen Müller Vorrichtung zum Aufbringen eines elektrisch aufgeladenen Beflockungsmaterials

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"WERKSTOFFE DER PAPIERVERARBEITUNG" DEUTSCHER FACHVERLAG Seiten 69-71 *

Also Published As

Publication number Publication date
EP0121581A1 (fr) 1984-10-17
ATE23955T1 (de) 1986-12-15
DE3368021D1 (en) 1987-01-15

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