EP0722545A1 - Appareil destine a l'alimentation et a la distribution de matieres - Google Patents

Appareil destine a l'alimentation et a la distribution de matieres

Info

Publication number
EP0722545A1
EP0722545A1 EP94930125A EP94930125A EP0722545A1 EP 0722545 A1 EP0722545 A1 EP 0722545A1 EP 94930125 A EP94930125 A EP 94930125A EP 94930125 A EP94930125 A EP 94930125A EP 0722545 A1 EP0722545 A1 EP 0722545A1
Authority
EP
European Patent Office
Prior art keywords
output shafts
input shaft
drive connection
feeding
speed
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.)
Withdrawn
Application number
EP94930125A
Other languages
German (de)
English (en)
Other versions
EP0722545A4 (fr
Inventor
Ernest A. Hair
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
Original Assignee
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
Publication of EP0722545A1 publication Critical patent/EP0722545A1/fr
Publication of EP0722545A4 publication Critical patent/EP0722545A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/065—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with a plurality of driving or driven shafts

Definitions

  • the present invention relates, in general terms, to a device for use in the feeding of material of any given type, and more especially paniculate material, such as powders and the like. More particularly, but not exclusively, the invention relates to an improved form of gear box for use in an apparatus intended for such usage or purpose, although it should be understood that the arrangement in accordance with the present invention is not to be considered to be limited to use in such a context. Indeed, the apparatus in accordance with the present invention lends itself to usage in a variety of different contexts, for the feeding, blending and/or mixing of materials, whether such materials be in the form of powders or liquids.
  • various forms of apparatus are provided for the feeding and/or mixing and for blending, of for example, dry bulk materials, such as for example powders, at substantially accurately controlled flow rates.
  • dry bulk materials such as for example powders
  • Such known apparatus or devices suffer from the disadvantage, however, that during the course of feeding it is difficult, if not actually impossible, to ensure a constant bulk density of the material being fed.
  • One reason, for example, is because of the tendency of powders to "bridge" within a hopper or the like. Once such a "bridge” forms, the result will be inconsistency in feed of the material.
  • the sheer bulk (weight) of material supported by such a "bridge” will result in the destruction thereof, in turn leading to a sudden and dramatic increase in material to be fed.
  • Such inconsistent feeding gives rise to an unsatisfactory result.
  • Variations in the bulk density of material being fed can in turn give rise, for example, to variations in the volume of material being fed or discharged per unit of time and, in practical terms and for purposes of proportioning in the preparation of so-called admixtures, such can have serious practical and economic consequences.
  • the process known as proportioning the purpose of the different speeds is to provide the minimum movement of product - and thereby degradation of product - that will effectively 'condition' the product to a uniform bulk density.
  • the apparatus in accordance with the invention includes at least two concentrically mounted output shafts, with the inner of those shafts preferably being driven at a greater speed when compared with the outer shaft, in other words with there being a relative speed difference in terms of rotation of the respective inner and outer shafts.
  • the concentrically mounted shafts may be rotating in the same direction at different speeds, but it would be equally possible to have such shafts rotating in opposite directions at different speeds.
  • a speed reduction drive apparatus including a single input shaft and at least two output shafts, said output shafts operating at different speeds, said input shaft being in drive connection via an intermediate gear train.
  • an apparatus for the controlled feeding and/or mixing and/or blending of material preferably particulate material, including a speed reduction drive apparatus of the aforementioned type.
  • FIG. 1 is a sectional view of a combined single and double speed reduction unit in accordance with the present invention
  • FIG. 2 is a view taken along the line 2-2 in FIG. 1 .
  • Description of Preferred Embodiment The arrangement in accordance with the invention incorporates what is to be termed a primary speed reduction unit which, in the preferred embodiment illustrated, includes a worm wheel 1 and worm shaft 2 driven by any suitable means, as for example an electric motor 3.
  • Suitable bearing means 4 of any given type are included to ensure correct mounting and operation of the worm wheel 1 /worm shaft 2. It should be realised that the actual means for driving such worm wheel 1 and worm shaft 2 is not of the essence of the invention. In an especially preferred embodiment the worm wheel 1 can run at a typical speed of 1 20 revolutions per minute with an input speed of 1 500 RPM. It should be realised, however, that input speed as such is generally variable - as could be achieved, for example, using an electric motor with a variable speed controller.
  • the worm wheel 1 is in drive connection with the first of two concentrically mounted shafts 5 and 6, more particularly the inner shaft 5 of said two concentrically mounted shafts 5 and 6. In an alternative embodiment, not illustrated, more than two such concentrically mounted shafts may be employed. That worm wheel 1 is also in drive connection with the sun gear or central gear 7 of a compound epicyclic gear speed reduction train of any given type. In the preferred embodiment illustrated a planetary gear set 8, comprising three or more planet wheels or gears and constituting part of the aforementioned epicyclic gear train, arranged so as to revolve around the aforementioned sun or central gear 7 and within a stationary gear 9, is then in drive connection with the outer shaft 6 of the two concentrically mounted output shafts 5 and 6.
  • the said outer shaft 6 is hollow.
  • the outer shaft 5 is driven at a speed of the order of 1 2 RPM, but in practice this will vary with desired or existing input speed.
  • An adaptor plate and seal housing, generally designated 1 0, is employed to assist in correct location and operation of the output shafts 5 and 6.
  • the adaptor plate 10 has associated therewith a seal cap, generally designated 1 1 , with the interposition of a spring means 1 2 of any given type (preferably spring steel) and suitable packing material, as for example braided teflon packing 1 3.
  • gear box or gear train or drive means in accordance with the present invention is, as stated earlier, in the controlled feeding and/or mixing and/or blending of dry bulk materials, as for example powders.
  • controlled feeding is desired in a number of different situations and, no matter what the situation involved, accuracy of feeding rate is imperative, not only in terms of efficiency but also in terms of cost. To be more specific, such accuracy/constancy of feeding rate is imperative in terms of, for example, consistency of the final product, or alternatively the dependability of any uniform chemical reaction desired between the product being fed and the base or receiving product.
  • the arrangement in accordance with the present invention also has application in processes such as or involving the mixing and/or blending of dry bulk materials or liquids, in particular viscous liquids.
  • the plurality of concentrically mounted shafts may rotate in opposite directions.
  • the outer shaft 6 of the two concentrically mounted shafts 5 and 6, running at a lower speed than the inner shaft 5, can then be used to drive a means 17 which serves to condition the bulk material being fed.
  • the expression "condition" is intended to mean ensuring that the material being fed exhibits constant bulk density or consistent bulk density whereby to maintain accuracy of feeding rate.
  • the conditioning means driven by 17 can take the form of a further auger or the like means, which functions to keep the bulk material in the vicinity of and in contact with feed auger 14 in motion and hence at a constant or substantially constant bulk density.
  • the so-called feed auger 14 and the device driven by 17 used for conditioning the bulk material rotate concentrically within the feed chamber 15, with the inner feed auger 14 being extended through that feed chamber 15 - and into a feed tube (not shown) from which the product or bulk material is to be delivered for subsequent processing of any given type.
  • the arrangement in accordance with the present invention is especially, although not exclusively, suited for usage in the food and related industries, where cleanliness is essential.
  • Prior art arrangements used in this context which utilized for example a combination of spur gears, have been found to be somewhat unsatisfactory in that it was possible, and more often than not was the case, that dirt and/or dust, or other unwanted material, could intrude into or invade the gearbox, gear train or the like.
  • the present applicant's arrangement overcomes this problem principally by virtue of the fact that the drive system/gear train or the like is completely sealed. The ramifications of such an arrangement, in terms of overall cleanliness and hygiene, long term availability, efficiency of operation, etc. should be evident.
  • the present applicant's arrangement is an extremely well- designed assembly of components, which lends itself to ready installation, operation and maintenance, without the need even for the use of skilled labour and specialized equipment.
  • the various components are so constructed as to fit together in one way and one way only - giving rise to obvious savings in terms of labour costs, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Procédé et appareil destinés à l'alimentation et/ou au mélange et/ou à la combinaison de matières, plus particulièrement de matières particulaires se présentant sous forme de poudres sèches. L'appareil comprend un train d'engrenage ou un organe d'entraînement réducteur muni d'un arbre d'entrée unique (2) accouplé à au moins deux arbes de sortie (5 et 6), de préférence montés de façon concentrique ou coaxiale, de façon à les entraîner. L'arbre d'entrée (2) est entraîné par un moteur électrique. L'appareil comprend également un organe réducteur planétaire doté d'un pignon satellite (7) et d'une pluralité de pignons planétaires (9), et qui est à son tour accouplé à celui (6) des deux arbres de sortie concentriques qui se trouve en position externe de façon à l'entraîner. Une vis d'alimentation peut être associée à l'arbre de sortie (5) afin de faciliter le conditionnement du matériau en cours de traitement.
EP94930125A 1993-10-13 1994-10-13 Appareil destine a l'alimentation et a la distribution de matieres Withdrawn EP0722545A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPM176193 1993-10-13
AUPM1761/93 1993-10-13
PCT/AU1994/000625 WO1995010715A1 (fr) 1993-10-13 1994-10-13 Appareil destine a l'alimentation et a la distribution de matieres

Publications (2)

Publication Number Publication Date
EP0722545A1 true EP0722545A1 (fr) 1996-07-24
EP0722545A4 EP0722545A4 (fr) 1997-12-29

Family

ID=3777267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94930125A Withdrawn EP0722545A4 (fr) 1993-10-13 1994-10-13 Appareil destine a l'alimentation et a la distribution de matieres

Country Status (4)

Country Link
EP (1) EP0722545A4 (fr)
JP (1) JPH09504351A (fr)
CA (1) CA2174230A1 (fr)
WO (1) WO1995010715A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104876013A (zh) * 2015-06-02 2015-09-02 朱德仲 一种水平无轴螺旋输送机调速杆
CN108840049B (zh) * 2018-08-20 2023-10-03 湖北科技学院 一种多级螺旋混凝土输料系统

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE676836A (fr) *
FR694878A (fr) * 1930-05-02 1930-12-09 Cornell Bag Corp Procédé et appareil de distribution de matière
US3240313A (en) * 1963-10-23 1966-03-15 Blattner Emma Dual auger conveyor
US3602486A (en) * 1968-07-18 1971-08-31 Nautamix Patent Ag Device for stirring material or drying slurries or sludges
DE2628507A1 (de) * 1976-06-16 1977-12-29 Ciba Geigy Ag Schneckendosiervorrichtung
US4337000A (en) * 1981-06-04 1982-06-29 Lehmann Herbert G Two-spindle planetary kitchen mixer-kneader and anti-climb dough hooks therefor
US4918665A (en) * 1985-06-04 1990-04-17 Herfeld Friedrich W Apparatus for mixing material
JPH0524082A (ja) * 1991-07-24 1993-02-02 Japan Steel Works Ltd:The 射出成形機の可塑化装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB962152A (en) * 1959-07-09 1964-07-01 Havilland Engine Co Ltd Differential transmission devices for driving two contra-rotating shafts

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE676836A (fr) *
FR694878A (fr) * 1930-05-02 1930-12-09 Cornell Bag Corp Procédé et appareil de distribution de matière
US3240313A (en) * 1963-10-23 1966-03-15 Blattner Emma Dual auger conveyor
US3602486A (en) * 1968-07-18 1971-08-31 Nautamix Patent Ag Device for stirring material or drying slurries or sludges
DE2628507A1 (de) * 1976-06-16 1977-12-29 Ciba Geigy Ag Schneckendosiervorrichtung
US4337000A (en) * 1981-06-04 1982-06-29 Lehmann Herbert G Two-spindle planetary kitchen mixer-kneader and anti-climb dough hooks therefor
US4918665A (en) * 1985-06-04 1990-04-17 Herfeld Friedrich W Apparatus for mixing material
JPH0524082A (ja) * 1991-07-24 1993-02-02 Japan Steel Works Ltd:The 射出成形機の可塑化装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 300 (M-1426), 8 June 1993 & JP 05 024082 A (JAPAN STEEL WORKS), 2 February 1993, *
See also references of WO9510715A1 *

Also Published As

Publication number Publication date
WO1995010715A1 (fr) 1995-04-20
EP0722545A4 (fr) 1997-12-29
JPH09504351A (ja) 1997-04-28
CA2174230A1 (fr) 1995-04-20

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