[go: up one dir, main page]

WO1990015767A1 - Dispositif de dosage pour materiaux pulverulents en vrac - Google Patents

Dispositif de dosage pour materiaux pulverulents en vrac Download PDF

Info

Publication number
WO1990015767A1
WO1990015767A1 PCT/EP1990/000952 EP9000952W WO9015767A1 WO 1990015767 A1 WO1990015767 A1 WO 1990015767A1 EP 9000952 W EP9000952 W EP 9000952W WO 9015767 A1 WO9015767 A1 WO 9015767A1
Authority
WO
WIPO (PCT)
Prior art keywords
scraper
circumferential groove
metering
dosing
recess
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.)
Ceased
Application number
PCT/EP1990/000952
Other languages
German (de)
English (en)
Inventor
Günter Doll
Original Assignee
Spido Technik Gmbh Entwicklung
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 Spido Technik Gmbh Entwicklung filed Critical Spido Technik Gmbh Entwicklung
Publication of WO1990015767A1 publication Critical patent/WO1990015767A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices
    • B65G65/40—Devices for emptying otherwise than from the top
    • B65G65/48—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems
    • B65G65/4881—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially horizontal axis

Definitions

  • the invention relates to a device for dosing powdery bulk material, in particular for use in plastics processing machines, with a motor-driven housing that is open in its casing on the inlet side upwards and on the outlet side downwards .rung arranged around a horizontal axis, on its circumference at least one radially open metering metering roller u ⁇ with a stripper engaging on the outlet side in the metering recess.
  • Metering devices of this type are known, the metering rollers of which are designed as cell wheels, on the circumference of which a plurality of metering recesses (cells) arranged at equal distances from one another and closed on their circumference are provided.
  • the emptying of the cells is supported there by a scraper which is inserted from the outside into the outlet-side channel of the metering device.
  • the known metering device works with free-flowing, granular bulk material with sufficient metering accuracy. Powdery, poorly pourable substances that tend to cake can only be metered inaccurately with it, because the closed cells of the cellular wheel absorb strongly varying amounts of powder and transfer them into the discharge channel.
  • the invention is therefore based on the object of to improve the known metering device of the type mentioned at the outset so that it can also be used to meter powdery, poorly pourable solids with high accuracy.
  • the invention is based on the empirical knowledge that the partitions between the individual cells of the known cell wheels form a kind of shading during the filling process, which disturb the filling process especially with poorly pourable substances.
  • the metering recess is designed as a coherent circumferential groove without intermediate walls.
  • the circumferential groove has a wave-shaped, preferably sinusoidal shape over the circumference, with deflections in the axial direction while the groove depth remains the same.
  • the scraper is expediently pivoted so that it can follow the shaft movement of the circumferential groove that arises when the metering roller rotates.
  • the discharge of the bulk material is facilitated by a cross section of the circumferential groove that widens radially outward.
  • the scraper preferably engages radially from below into the circumferential groove and is mounted in an oscillating manner about a swivel axis.
  • the surface of which the bulk material acts includes an angle that is open obliquely downwards with the vertical, the falling out of the bulk material is facilitated below.
  • the scraper advantageously has a scraper tongue adapted to the cross-sectional shape of the circumferential groove.
  • the scraper can for example on a laßkanal engaging in the Aus ⁇ , dissolvable, in a Gerissausewan *: are preferably mounted between two annular shoulders be ⁇ solidified cylindrical bolt. In order to make it easier to replace the cylinder bolt and the scraper, one of the ring shoulders can be formed by a spacer sleeve loosely pushed onto the cylinder bolt. As an alternative to this, the scraper can be rigidly connected to a cylinder bolt which engages in the outlet channel and which is mounted in an oscillating manner in a cylinder bore of a housing wall, so that the bulk material falling on the cylinder bolt is thrown off when it rotates.
  • the metering roller expediently has, on its circumferential surface, preferably rectangular in cross-section, starting from the end edges of the peripheral surface against the direction of rotation and pointing inwardly into the peripheral groove and conveying grooves through which the ring gap between the metering roller and the Any recessed powder that has entered the housing is conveyed back to the circumferential groove.
  • the housing cutout can be closed on the outlet side by a shut-off slide arranged below the scraper.
  • a scraper plate arranged in the area of the inlet-side jacket opening, with a scraper edge parallel to the axis of the metering roller and extending into the immediate vicinity of the metering roller, closes the annular gap in the direction of rotation between the circumference of the metering roller and the cylindrical inner surface of the housing outer Saving on the inlet side and prevents the powdery bulk material from becoming stuck in the annular gap and thus leading to a blocking of the metering roller.
  • the distance between the scraper ante and the circumference of the metering roller is expediently adjustable.
  • Baking of pulverulent bulk material on the scraper can be prevented by at least one compressed air outlet nozzle, which in the area of the scraper opens into the outlet-side jacket opening and is directed towards the surface of the scraper acted upon by the bulk material.
  • FIG. 1 shows a partial vertical section through a metering device for powder metering.
  • FIG. 2 shows a plan view of the circumference of the metering roller according to FIG. 1 with a pendulum scraper; 3 shows a vertical section through a further exemplary embodiment of a powder metering device;
  • Fig. 4 shows a section through the metering roller
  • the dosing device shown in the drawing is primarily intended for dosing poorly pourable, powdery bulk material, for example colored powders in plastics processing.
  • the metering device consists of a housing 10 and a metering roller 18 which is arranged in a substantially cylindrical housing recess 12 and is motor-driven about a horizontal axis 14 in the direction of the arrow 16.
  • the metering roller 18 is connected from above with a a hopper 19 equipped hopper 21, a feed chute 20 leading from the hopper 21 to the housing recess 12 and an inlet opening 22 with the bulk material stored in a container 23 and can be connected downwards via an outlet opening 24 to an output channel 26 for the metered bulk material.
  • the housing 10, together with the container 23 placed on the housing is detachably plugged onto a pin 25 of a holding device 27.
  • the inlet opening 22 and the outlet opening 24 are separated from one another by closed conveying paths 28, 30 which run within the housing recess 12.
  • the material is transported in a wave-like, preferably sinusoidal shape along the circumference of the metering roller running transport or circumferential groove 32, which is continuously filled with bulk material in the area of the feed chute 20 and is continuously emptied from the bulk material on the side of the discharge channel 26 by a scraper 34 engaging in the transport groove 32.
  • the scraper 34 shown in FIG. 1 is mounted on a bolt 38, which is screwed into a threaded bore of the housing wall 36, so that it oscillates about the horizontally oriented axis 38 'of the bolt 38, so that it swings the movement of the traction groove 32 back and forth in the axial direction of the metering roller can participate.
  • the stripper 34 which is preferably designed as a stamped sheet metal part, is mounted on the bolt 38 between a bolt-fixed ring shoulder 40 and the end face of a loosely pushed-on spacer ring 42, so that it can be replaced relatively easily by loosening the bolt 38.
  • the stripper 34 shown in FIG. 3 is mounted on a cylinder bolt 38 which is inclined relative to the horizontal.
  • the inclination of the pin axis 38 'on the one hand makes it more difficult for bulk material to accumulate on the upward circumferential surface of the cylinder bolt 38, and on the other hand the space formed between the housing wall 36 and the surface of the scraper 34 acted upon by the bulk material widens downwards, as a result of which Blockages can be prevented.
  • the scraper 3.4 weJLat which is pivoted about a pivot axis 38 '. a stripper 44 engaging radially into the transport groove 32 with its free end.
  • the profile course of the transport groove 32 and the outline of the free end of the scraper tongue which plunges into the transport groove are matched to one another such that the transport groove 32 is completely cleared out in each pendulum position of the scraper 34.
  • the inclination of the groove base is in each case at the apex of the curve, i.e. greatest in the area of the maximum pendulum deflection of the scraper and decreases in each case towards the turning points of the curve.
  • the filling shaft 20 of the dosing device which is open towards the funnel 21 on the one hand and towards the inlet opening 22 on the other hand, has two opposite side walls 72 which diverging downwards and two end walls 74, 76 which converge obliquely towards the inlet opening 22 .
  • a scraper plate 60 is arranged on the end wall 74, the scraper edge 54 of which extends into the immediate vicinity of the circumference of the metering roller 18 and the annular gap 56 closed on the entry side.
  • the scraper plate 60 fastened to the housing 10 with the holding screw is adjustable in the direction of the metering roller 18 so that it can be readjusted when worn.
  • rectangular conveying grooves 64 are worked into the circumferential surface of the metering roller 18, which, starting from the front edges 62 of the circumferential surface, proceed obliquely inwards against the direction of rotation (arrow 16) on the circumferential surface ver ⁇ run and open into the Transport ⁇ ut 32. With the aid of the conveying grooves 64, the bulk material that has penetrated into the annular gap 56 is returned to the transport groove.
  • a gate valve 52 is horizontally displaceably mounted on the housing 10, which automatically closes the discharge channel 26 when the housing 10 is removed from the holding device 27 and thus prevents bulk material from falling out of the housing.
  • a cylinder pin 51 formed on the gate valve 52 engages in a clamping spring 53, so that the gate valve 52 is held in its open position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Un dispositif de dosage pour matériaux pulvérulents en vrac, utile notamment dans des machines de traitement de matières plastiques, comprend un rouleau de dosage (18) monté de manière rotative autour d'un axe horizontal (14) dans un évidement (12) du logement dont l'enveloppe est ouverte en haut du côté admission et en bas du côté sortie. Le rouleau de dosage (18) est pourvu à sa circonférence d'au moins un évidement de dosage (32) radialement ouvert. Une racle (34) agencée du côté sortie pénètre dans l'évidement de dosage (32) et enlève de celui-ci les matériaux à doser transportés depuis le puits de remplissage (20) jusqu'au canal de distribution (26). Afin d'assurer une précision élevée de dosage même dans le cas de matériaux pulvérulents en vrac qui s'écoulent difficilement, et qui tendent donc à s'agglomérer, l'évidement de dosage (32) a la forme d'une rainure circonférentielle continue ondulée, alors que la racle (34) pénètre dans la rainure de bas en haut et oscille autour d'un axe horizontal (38).
PCT/EP1990/000952 1989-06-14 1990-06-15 Dispositif de dosage pour materiaux pulverulents en vrac Ceased WO1990015767A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3919389.6 1989-06-14
DE3919389 1989-06-14

Publications (1)

Publication Number Publication Date
WO1990015767A1 true WO1990015767A1 (fr) 1990-12-27

Family

ID=6382713

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1990/000952 Ceased WO1990015767A1 (fr) 1989-06-14 1990-06-15 Dispositif de dosage pour materiaux pulverulents en vrac

Country Status (3)

Country Link
AU (1) AU5930290A (fr)
DE (1) DE4019018C2 (fr)
WO (1) WO1990015767A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114985040A (zh) * 2022-02-28 2022-09-02 南昌泰康食品科技有限公司 一种多功能搅拌破碎装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19752532C2 (de) * 1996-12-13 1999-10-21 Fraunhofer Ges Forschung Vorrichtung zum Austragen eines pulverförmigen oder körnigen Stoffes

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486484A (en) * 1965-09-23 1969-12-30 British Iron Steel Research Formation of coatings
GB1202766A (en) * 1968-07-23 1970-08-19 Golden Wonder Ltd Apparatus for distributing powder
GB1402429A (en) * 1972-06-13 1975-08-06 British Titan Ltd Feeding solid material
DE3203887A1 (de) * 1981-02-09 1982-10-14 Rogers Corp., 06263 Rogers, Conn. Schaumstoffbeschichtete speiserolle
EP0112398A1 (fr) * 1982-12-20 1984-07-04 Bayer Ag Dispositif de dosage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486484A (en) * 1965-09-23 1969-12-30 British Iron Steel Research Formation of coatings
GB1202766A (en) * 1968-07-23 1970-08-19 Golden Wonder Ltd Apparatus for distributing powder
GB1402429A (en) * 1972-06-13 1975-08-06 British Titan Ltd Feeding solid material
DE3203887A1 (de) * 1981-02-09 1982-10-14 Rogers Corp., 06263 Rogers, Conn. Schaumstoffbeschichtete speiserolle
EP0112398A1 (fr) * 1982-12-20 1984-07-04 Bayer Ag Dispositif de dosage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114985040A (zh) * 2022-02-28 2022-09-02 南昌泰康食品科技有限公司 一种多功能搅拌破碎装置
CN114985040B (zh) * 2022-02-28 2023-10-27 南昌泰康食品科技有限公司 一种多功能搅拌破碎装置

Also Published As

Publication number Publication date
DE4019018C2 (de) 2000-08-17
DE4019018A1 (de) 1990-12-20
AU5930290A (en) 1991-01-08

Similar Documents

Publication Publication Date Title
EP1931950B1 (fr) Dispositif de dosage pour substances pulverulentes ou pateuses
EP0212256B1 (fr) Dispositif pour la distribution de quantités dosées d'un produit en vrac
DE1908822B2 (de) Vorrichtung zum dosierten abfuellen von pulverfoermigem gut in einzelne behaelter
DE1531934C3 (de) Austrag- Misch- und Dosiervorrichtung für schlecht fließende pulverförmige Stoffe
DE3303655A1 (de) Vorrichtung fuer volumetrische abgabe von schuettgut
EP1931952B1 (fr) Dispositif de dosage pour substances pulverulentes ou pateuses
DE19706407C1 (de) Dosier- und Austragsvorrichtung für Schüttgüter
WO1990015767A1 (fr) Dispositif de dosage pour materiaux pulverulents en vrac
DE2744465A1 (de) Druckfoerderanordnung
EP0885113A1 (fr) Dispositif d'alimentation en masses a comprimer pour machines a produire des comprimes
CH620962A5 (en) Compressed-air spraying machine for concrete, mortar or similar material, having a metering device
DE2520755B2 (de) Vorrichtung zum dosierten Zuführen eines schlecht fließenden Materials
DE19752532C2 (de) Vorrichtung zum Austragen eines pulverförmigen oder körnigen Stoffes
DE2806103C2 (de) Dosiergerät zum Zudosieren von festen Stoffen in den Trichter von Kunststoffverarbeitungsmaschinen
WO1990015768A1 (fr) Dispositif de dosage pour materiaux pulverulents ou granules en vrac
EP0233978B1 (fr) Dispositif pour broyer des matériaux difficiles à broyer
EP3339817B1 (fr) Dispositif de dosage pour substances en poudre
DE2559162C3 (de) Anlage zur Kompostierung von Müll und/oder eingedicktem Schlamm
EP2984013B1 (fr) Appareil et procédé pour le dosage de particules de matières en vrac
DE2359522A1 (de) Zumess- und abfuelleinrichtung
DE2902853B1 (de) Rotationszellendosierer und -verschluss
DE2412660A1 (de) Zuteiler fuer pulver- oder kornfoermiges gut
DE2229385C3 (de) Tellerdosiergerät
DE7804264U1 (de) Dosiergeraet zum zudosieren von festen stoffen in den vorrats- oder mischtrichter von kunststoffverarbeitungsmaschinen
DE29803937U1 (de) Behälter für rieselfähiges Material

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU CA JP SU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1990910116

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1990910116

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: CA