Textiles: fluid treating apparatus – Machines – Combined operations
Patent
1998-03-12
1999-05-11
Coe, Philip R.
Textiles: fluid treating apparatus
Machines
Combined operations
68181R, 162 60, 162329, 162380, 210404, D21C1/02
Patent
active
059015853
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an apparatus for treating a liquid-containing fibre material, the said apparatus comprising a stand; a rotatably mounted drum with a cylindrical liquid-permeable jacket; feeding and discharging members for feeding and discharging, respectively, the fibre material; a wall member which surrounds at least a part of the jacket in order to delimit between itself and the jacket a material space with which the feeding member communicates via an inlet, which material space includes at least one treatment zone; a delivery member arranged on the outside of the wall member within the said treatment zone for delivering treatment liquid to the treatment space via openings in the wall member; a press member arranged downstream of each delivery member in order to exert a press force against the fibre material; and a collecting chamber arranged inside the drum in connection with each treatment zone and press member for receiving liquid which is pressed through the jacket.
Conventional wash presses of the type mentioned above have their drums centrally mounted with the aid of spindles or the like. In such a construction it is not possible to provide, on the one hand, fixed internal partition walls for forming separate collecting chambers for different filtrates, and, on the other hand, internal axial support rollers which have, among other things, a supporting function.
The object of the invention is to make available an improved apparatus which is used principally, but not exclusively, for washing and pressing of principally, but not exclusively, pulp in several stages, where the filtrate from each stage can be removed separately from the drum by virtue of the fact that the apparatus has a drum which is simplified in constructional terms and which is free from a central bearing shaft and radial support elements between this shaft and the drum jacket.
The apparatus according to the invention is characterized in that the drum is supported by two or more support rollers, which two support rollers extend through the drum on either side of the vertical centre plane of the drum and are in contact with the inner side of the cylindrical body of the drum, the support rollers being rotatably mounted on the stand; and in that closure members are arranged in a stationary manner at the axially opposite ends of the drum in order to close off the said collecting chamber or chambers laterally.
The invention will be explained in greater detail with reference to the drawings.
FIG. 1 is an end view of an apparatus according to a preferred embodiment of the invention.
FIG. 2 is a cross-sectional view of a drum belonging to the apparatus according to FIG. 1.
FIG. 3 is a cross-sectional view of a half part of the drum which is shown in FIG. 2.
FIGS. 4 and 5 are enlarged details of the drum according to FIGS. 2 and 3.
FIG. 6 is an end view of the drum and its support rollers belonging to the apparatus according to FIG. 1.
FIG. 7 is a side view of the drum and the support rollers according to FIG. 6.
The wash apparatus shown diagrammatically in FIG. 1 includes a stand 1, a wall member 2 and a drum 3 which has a cylindrical body 4 and is open to both sides. The drum 3 does not therefore itself have end walls. The wall member 2, which has a curved shape, and the cylindrical body 4 of the drum delimit between themselves a material space 5 for the liquid-containing fibre material which is to be treated. As can be seen more clearly from FIGS. 2 to 5, the cylindrical body 4 of the drum includes a jacket 40 in the form of a screen plate and a support structure 41, which is surrounded by the screen plate 40. The support structure 41 includes two opposite end rings 42 and a plurality of plane rings 43 situated between them, and also a plurality of straight flat-bars 44 which extend between the end rings 42. The flat-bars 44 and the plane rings 43 have opposing radial recesses 45 in which they receive one another by their full radial dimension in order to form rectangular compartments 46, which are open only in the directi
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Coe Philip R.
Kvaerner Pulping AB
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