EP0485014A1 - Appareil de mélange pour matériau fibreux, notamment pour les fibres de coton - Google Patents

Appareil de mélange pour matériau fibreux, notamment pour les fibres de coton Download PDF

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Publication number
EP0485014A1
EP0485014A1 EP91202811A EP91202811A EP0485014A1 EP 0485014 A1 EP0485014 A1 EP 0485014A1 EP 91202811 A EP91202811 A EP 91202811A EP 91202811 A EP91202811 A EP 91202811A EP 0485014 A1 EP0485014 A1 EP 0485014A1
Authority
EP
European Patent Office
Prior art keywords
mixer
bins
structure according
mixing
feed direction
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
EP91202811A
Other languages
German (de)
English (en)
Other versions
EP0485014B1 (fr
Inventor
Luigi Pezzoli
Emilio Vezzoli
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.)
Fratelli Marzoli and C SpA
Original Assignee
Fratelli Marzoli and C SpA
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 Fratelli Marzoli and C SpA filed Critical Fratelli Marzoli and C SpA
Publication of EP0485014A1 publication Critical patent/EP0485014A1/fr
Application granted granted Critical
Publication of EP0485014B1 publication Critical patent/EP0485014B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G13/00—Mixing, e.g. blending, fibres; Mixing non-fibrous materials with fibres
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/02—Hoppers; Delivery shoots
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/08—Air draught or like pneumatic arrangements

Definitions

  • This invention relates to a mixing structure for staple material, especially cotton staples.
  • the bins are generally filled to different levels, wherein those bins closest to the feed side of the material have a higher level of material and this level gradually decreases towards the final bin, i.e. the bin furthest away from the feed side.
  • the system of distributing the material to the various bins also involves perceptible rarefaction of the material as it approaches the final bin, so that, in addition to having an increasingly lower level, the material is also decreasingly compact from one bin to the next. Consequently, the material has a different degree of compaction at the outlet of the various bins, where feed and mixing rollers are disposed, thus resulting in non-homogeneous mixing, wherein quantities of material originally having the same characteristics are mixed together in different states at the outlet of the bins.
  • the transportation conditions for the material taken directly from the conveyor are substantially different from those for the subsequent material, increasingly further away from the conveyor, which is removed from the material underneath by means of friction. Therefore, once again, this can lead to different degrees of compaction of the material arriving at the delivery rollers.
  • the object of this invention is to overcome the abovementioned limitations and to obviate the disadvantages currently encountered in the case of the known mixers, by providing a mixing structure capable of providing substantially homogeneous mixing without any significant increase in the overall dimensions and substantially retaining the greater part of the conventional structure of the mixer.
  • a mixing structure for staple material especially cotton staples, of the type comprising a plurality of adjacent vertical bins, communicating at the top with a duct for supplying the material and provided at the lower outlet with associated mixing rollers adapted to supply the material to a common mixing and conveying delivery channel, means for generating a current of air for the transportation of the material being disposed in the supply duct, characterised in that the feed direction of the material at the inlet of the mixer slopes upwards and that the bins are of a height gradually increasing in the feed direction of the material.
  • the material supplied in a current of air to the inlet of the mixer is driven in a substantially uniform manner into the various bins, wherein there are no mechanical transporting and conveying elements in the ascending path and the current of air for transportation directs all of the material into the interior of the various bins, said material, by virtue of the inclination of the upper part of the mixer, being distributed among the various bins at different levels, as is necessary for true mixing, but substantially with the same degree of compaction, thereby eliminating the disadvantage specified at the outset and making it possible to achieve improved homogenisation of the material at the outlet.
  • the material advanced upwardly into the mixer by a vertical component may also advantageously be distributed among the various bins to a certain extent as a function of the weight of the staples, wherein the vertical component can have a certain influence owing to the force of gravity, acting in the opposite direction to the direction of movement of the material. In this manner, it is possible to obtain a certain degree of sorting of the material into the various bins, this having an advantageous effect on the results of the final mixing.
  • a mixer 1 comprises a plurality of adjacent vertical bins 2, separated by means of dividing walls 3 and communicating with one another at the top and having a duct 4 for supplying the staple material, e.g. cotton staples.
  • staple material e.g. cotton staples.
  • the bins 2 have associated mixing means, e.g. in the form of pairs of delivery feed rollers 5, below which are disposed mixing rollers 6, in an arrangement known per se.
  • the rollers 5 of each pair are actuated so as to rotate in opposite directions, with the aid of means known per se.
  • Both the rollers 5 and the rollers 6 can be operated at different speeds for the various bins 2, e.g. at a speed gradually decreasing from the bin closest to the feed side to the bin furthest away from the feed side or vice versa, according to a technique which is known per se and which will therefore not be described and illustrated in more detail.
  • rollers 5 and 6 supply the material to a common mixing and conveying delivery channel 7, from where the mixed material is drawn into the next machine, e.g. an opener or a carding machine, in the manner known per se.
  • a common mixing and conveying delivery channel 7 from where the mixed material is drawn into the next machine, e.g. an opener or a carding machine, in the manner known per se.
  • the opposing lateral walls 8 of the body of the mixer 1 are provided with windows 9 so that it is possible to verify the proper movement of the material inside the bins 2.
  • a pressure detector 10 is provided in the supply duct 4, at the inlet of the mixer 1.
  • means 11 for generating a current of air for the transportation of the material are also disposed in the duct 4.
  • this means is an axial-inlet, radial-outlet fan. It is of the known type and is disposed to rotate with the aid of a motor (not shown). The fan draws the material into a current of air, e.g. from a sampler, and delivers it into the mixer 1.
  • the walls 8 of the mixer 1 have perforated portions 12 and associated discharge pipes 13, through which the air delivered by the fan 11 leaves the mixer 1.
  • the discharge pipes 13 converge into one common outlet 14.
  • the structure of the mixer in its upper part is such that the feed direction of the material at the inlet of the mixer, indicated by the arrow 15, slopes upwards and the bins 2 are of a height gradually increasing in the feed direction of the material in the mixer 1.
  • the mixer 1 therefore has an inclined top 16, the interior thereof defining a guide surface 17 for the material in the sloping feed direction of the said material. This surface is connected by means of a portion 18 to the wall of the final bin 2.
  • the dividing walls 3 end at the top in profiled deflection surfaces 19 known per se, but succeeding one another in a sloping line parallel to the feed direction of the material, so as to define, together with the top 16, a sloping feed channel 20, the inlets to the various bins 2 having gradually decreasing levels departing from the bottom of said channel.
  • the transverse inlet sections of the various bins 2 at the surfaces 19 can be of identical size, as illustrated, or they can be of gradually varying size, e.g. gradually decreasing from the bin 2 closest to the feed side to the bin 2 furthest away from the feed side.
  • the path 4a of the supply duct external to the mixer 1 is advantageously directly connected thereto, and it also slopes with a degree of inclination equal to that of the feed direction of the material into the mixer 1, so that the material is delivered into said mixer without being subjected to deflection and the entire section of the material can enter the mixer in the same state, resulting advantageously in uniform distribution of the material throughout the various bins 2.
  • the angle of inclination of the feed direction, or of the channel 20 and the duct path 4a is preferably between 10 o and 70 o , according to the nature and quality of the material to be mixed.
  • the staple material is delivered in a substantially uniform manner into the various bins 2, so that there is an almost equal degree of compaction in each bin 2, irrespective of its distance from the feed side.
  • This inclined arrangement results in the material being disposed at different levels in the various bins 2, thereby creating the conditions for true mixing of different quantities of material, obtained by the successive removal of different qualities of material from the original bale.
  • the fan 11 is advantageously controlled as a function of the pressure detected by the pressure detector 10, so as to maintain constant and optimum feed conditions.
  • the level of material in the bins 2 can be modified by varying the speed of the delivery feed rollers 5 and the associated mixing rollers 6. E.g. by gradually increasing the speed of the rollers 5 and 6 of the bins 2 closest to the feed side compared to those furthest away from the feed side, it is possible to obtain a more inclined arrangement (indicated by the broken line 21) of the level of material in the various bins 2, thereby varying the characteristics of the mixing.
  • the upper part of the mixer 1 can be provided with a cover 23 hinged on to the body of the mixer and capable of being fixed in different angular positions, defining the same inclination as that of the feed direction of the material 2.
  • the duct path 4a is connected to the fixed part of the duct 4 by means of a flexible connection 4b.
  • a mixer having a structure according to the invention involves only a modest increase in the overall dimensions, virtually only with respect to its height, and therefore in the direction posing fewest problems, so that it is possible by simple and inexpensive means to achieve more uniform feeding of the bins and thus improved homogenisation of the material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP91202811A 1990-11-06 1991-10-30 Appareil de mélange pour matériau fibreux, notamment pour les fibres de coton Expired - Lifetime EP0485014B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2197890 1990-11-06
IT02197890A IT1243895B (it) 1990-11-06 1990-11-06 Struttura di miscelatore per materiali in fiocchi di fibre, in particolare di cotone

Publications (2)

Publication Number Publication Date
EP0485014A1 true EP0485014A1 (fr) 1992-05-13
EP0485014B1 EP0485014B1 (fr) 1997-09-03

Family

ID=11189681

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91202811A Expired - Lifetime EP0485014B1 (fr) 1990-11-06 1991-10-30 Appareil de mélange pour matériau fibreux, notamment pour les fibres de coton

Country Status (3)

Country Link
EP (1) EP0485014B1 (fr)
DE (1) DE69127528T2 (fr)
IT (1) IT1243895B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0709500A1 (fr) * 1994-10-26 1996-05-01 Maschinenfabrik Rieter Ag Appareil pour séparer des flocons de fibres d'un courant d'air transporteur
DE19846299A1 (de) * 1998-10-08 2000-04-13 Temafa Textilmaschf Meissner Öffnervorrichtung
CN100467684C (zh) * 2003-03-27 2009-03-11 马尔佐利股份公司 用于将纤维输送管道连接到至少一台纺织机的连接件
CN107177906A (zh) * 2017-07-24 2017-09-19 宁夏如意科技时尚产业有限公司 一种清花多仓混棉机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017083911A1 (fr) * 2015-11-17 2017-05-26 Everbright Innovations Pty Ltd Appareil permettant de distribuer uniformément des fibres sur un transporteur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR80675E (fr) * 1960-07-18 1963-05-31 Perfectionnements aux procédés et aux machines pour le mélange des matières texties en vue de leur filature
GB1295455A (fr) * 1968-11-08 1972-11-08
DE2939968A1 (de) * 1979-10-02 1981-04-09 Temafa, Textilmaschinenfabrik Meissner, Morgner & Co Gmbh, 5070 Bergisch Gladbach Fuellschacht fuer eine krempelspeiseeinrichtung
FR2518586A1 (fr) * 1981-12-23 1983-06-24 Truetzschler & Co Procede et dispositif pour le melange de fibres textiles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR80675E (fr) * 1960-07-18 1963-05-31 Perfectionnements aux procédés et aux machines pour le mélange des matières texties en vue de leur filature
GB1295455A (fr) * 1968-11-08 1972-11-08
DE2939968A1 (de) * 1979-10-02 1981-04-09 Temafa, Textilmaschinenfabrik Meissner, Morgner & Co Gmbh, 5070 Bergisch Gladbach Fuellschacht fuer eine krempelspeiseeinrichtung
FR2518586A1 (fr) * 1981-12-23 1983-06-24 Truetzschler & Co Procede et dispositif pour le melange de fibres textiles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0709500A1 (fr) * 1994-10-26 1996-05-01 Maschinenfabrik Rieter Ag Appareil pour séparer des flocons de fibres d'un courant d'air transporteur
DE19846299A1 (de) * 1998-10-08 2000-04-13 Temafa Textilmaschf Meissner Öffnervorrichtung
DE19846299B4 (de) * 1998-10-08 2010-09-30 Temafa Maschinenfabrik Gmbh Öffnervorrichtung
CN100467684C (zh) * 2003-03-27 2009-03-11 马尔佐利股份公司 用于将纤维输送管道连接到至少一台纺织机的连接件
CN107177906A (zh) * 2017-07-24 2017-09-19 宁夏如意科技时尚产业有限公司 一种清花多仓混棉机

Also Published As

Publication number Publication date
IT9021978A0 (it) 1990-11-06
EP0485014B1 (fr) 1997-09-03
IT9021978A1 (it) 1992-05-06
DE69127528T2 (de) 1998-04-02
IT1243895B (it) 1994-06-28
DE69127528D1 (de) 1997-10-09

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