Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
  • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
  • B67D1/00—Apparatus or devices for dispensing beverages on draught
  • B67D1/08—Details
  • B67D1/10—Pump mechanism
• • C—CHEMISTRY; METALLURGY
  • C14—SKINS; HIDES; PELTS; LEATHER
  • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
  • C14C15/00—Apparatus for chemical treatment or washing of hides, skins, or leather

Definitions

• the present invention relates to drums intended for treating in particular animal skins.
• Fullers which are currently used for the wet or dry treatment of skins, textile materials etc., are generally constituted by a hollow cylinder of large volume, slowly rotating around its horizontal axis and containing the skins and the like to be treated and possibly the treatment liquid. In this slow rotary movement, the skins or other materials are brewed while falling on themselves.
• Another object of the invention is to provide a fuller in which the skins and the like are not entrained on the single large circle of the cylinder corresponding to their initial position, as in the case of fullers which have no partition, or even compartmentalized fullers described above. They are also not piled up at one of the ends of the internal peripheral helix that some of the fouons already mentioned comprise.
• the skins and the like are advantageously conveyed several times at each turn of the fuller, and alternately, towards each of the ends thereof, at the same time as they are brewed by a successive fall from the axis towards the periphery as the cylinder rotates.
• the aims of the present invention are achieved by an essentially cylindrical fuller characterized in that it comprises supports starting from the periphery of the cylinder and provided with retaining elements mounted on said support.
• the supports may consist of at least two perforated walls which extend, for any section of the cylinder, at least partially according to the radius of the cylinder, starting from the periphery of the latter, and this, for example, by globally affecting a twisted shape.
• supports means for example a sheet provided with perforations or an arrangement of bars, slightly spaced from one another or any other equivalent means making it possible to support and entrain the skins or any other material but to allow the treatment fluid to pass, during the rotation of the cylinder.
• the supports may consist of two perforated walls op ⁇ posed with respect to the cylinder axis, that s J extend from the periphery of the cylinder up to the axis thereof, by globally affecting a twisted shape such that the pitch of the twist is significantly greater than the length of said cylinder.
• the supports consist of at least two perforated walls which extend, for any section of cylinder, at least partially along a straight line parallel to the radius of said cylinder , starting from the periphery thereof, two walls opposite to the axis of the cylinder being offset so as to leave a passage opening between them in the center of the cylinder.
• retaining elements pegs or bars or any other means of entrainment or attachment of the material to be brewed, to the interior. laughter of the cylinder, during its rotation.
• the pitch of the twist formed by the supports is chosen, as a function of the speed of rotation of the cylinder, so that the angle formed by the in ⁇ tersections of a twisted plane with each of the two ends of the cylinder is substantially less than half the angle formed by two successive walls.
• said angle can reach about 90 °, when there are only two perforated walls offset by 180 ° and which meet on the axis.
• the skins for example, are subjected to a longitudinal displacement towards one end of the fuller during their stirring in a shape as they are subjected at high voltages which risk damaging them
• the skins or other materials treated in fullers according to the invention are subjected to considerably less tension and are subjected to mixing, markedly improved in a diametral direction and following a slow movement, back and forth, from one end to the other of the fuller. It has, in fact, been observed that the skins are driven by the walls or supports, by being hooked to the ankles, until the wall in question reaches its almost vertical position.
• the fuller of the present invention also allows emptying through the cylindrical periphery and through one end of the cylinder. This possibility makes it possible to reduce the size of a fuller and therefore also the costs of industrial installation.
• the central axis of the device is hollow and is provided with perforations which makes it possible to supply the various treatment liquids in the fuller, for example the dye baths. This gives better distribution of these treatment liquids and therefore more regular treatment.
• FIG. 1 is a schematic view of a fuller provided with the internal partitioning object of the present invention and forming two longitu ⁇ dinaux compartments;
• - Figure 2 is a schematic cross-sectional view of another embodiment of said object which has three longitudinal compartments;
• - Figure 3 is a schematic view showing the possibility of making the twisted planes by means of several straight planes successively organized with an angular offset from one relative to the other;
• FIG. 4 is a view similar to the previous views, of another embodiment according to the invention.
• the device object of the present invention consists of the sealed cylinder 1, rotating around the horizontal shaft 2 and is internally divided into at least two compartments by the radial partitions 3 and 4 diametrically aligned (Figure 1) or wedged at 120 ° from each other such as 5, 6 and 7 ( Figure 2).
• This shaft 2 is preferably hollow and is provided with perforations 22 (shown only in FIG. 1) which make it possible to supply various treatment liquids to the fuller.
• the perforated walls are provided with retaining elements such as pegs which are advantageously mounted on the face of the wall on which the skins which are entrained by an adjacent wall fall down.
• these perfo ⁇ rees partitions marry a twisted shape which extends over the whole of the cylinder 1 and is integral with the central shaft 2, on the one hand, and the internal wall, on the other hand, according to a twisted curve 16 such that the pitch of the twist thus formed allows the radii of intersection of these twisted planes with each of the two bottoms of the cylin ⁇ dre 1 to make an angle between them which is determined according to of the desired translation speed longi- . tudinal of the treated material and which is less than or equal
• the twisted perforated partitions can be formed by a succession of flat portions of radial partitions (8,9,10,11) organized one after the other on the tree axial of the fuller and having between them an angular offset so as to form en ⁇ seems a generally twisted path and staircase-shaped, each of which the steps 8, 9, 10, 11 for example, is connected to the other by the corresponding risers 12, 13, 14 etc. In this case the passage of skins from one step to the other adds an additional action to the mixing previously obtained.
• Pegs or other retaining means can also be installed on these wall portions and play the same role as that previously mentioned.
• the supports 5, 6, 7 extend, from the circumference of cylinder 1, only partially towards the center, while taking on a generally twisted shape.
• the supports are provided with dowels or bars 15 intended to hang the skins for example, with a view to improving their mixing.
• the perforated supports can consist of a sheet metal provided with perforations or an arrangement of bars spaced from one another.
• FIG. 5 refers to another form of execution of the invention in which the supports 3, 4 consist of at least two perforated walls which extend, for any given section of the cylinder, according to a line segment parallel to the radius of the cylinder.
• the supports extend towards the inside of the cylinder starting from the periphery.
• the two op ⁇ posed supports 3 and 4 are offset so as to leave an adequate opening.
• the supports 3, 4 are provided with pins or bars 15 and can form a twisted intersection with the wall of the cylinder 1.
• Figures 6 and 7 show alternative embodiments of the shapes of Figure 5.
• the supports 3 and 4 provided with pins 5 affect in section the shape of an S.
• the supports are in dihedral shape and the X and Y values will be chosen, as well as the angle a depending on the nature of the materials to be treated and the working conditions.
• the present invention can be used to provide better treatment of the skin or any other material in each case where this treatment involves the use of a fuller, the device which is the subject of the present invention.
• vention allowing a better treatment thanks to an increased mixing and making it possible to save an important part of energy thanks to a saving of time obtained in the operation by the very fact of this better mixing, as well as by the better balancing of the masses in motion, which reduces the resisting torque in a high proportion.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Materials For Photolithography (AREA)
• Soil Working Implements (AREA)
• Physical Or Chemical Processes And Apparatus (AREA)
• Manufacturing Of Micro-Capsules (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Cites Families (8)

• 1985
  • 1985-05-08 EP EP19850901945 patent/EP0182800A1/fr not_active Withdrawn
  • 1985-05-08 WO PCT/BE1985/000009 patent/WO1985005379A1/fr not_active Application Discontinuation
  • 1985-05-08 AU AU43537/85A patent/AU4353785A/en not_active Abandoned
  • 1985-05-10 ES ES543582A patent/ES8607402A1/es not_active Expired

Non-Patent Citations (1)

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