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US 6,890,406 B2Granted
Method and apparatus for tightening a shoe press roll mantle and/or reducing its wear
AssigneeVaahto Oy
InventorErkki Aho
Life of this patent
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AssigneeVaahto Oy
InventorErkki Aho
Estimating the term…
A method for tightening a shoe press roll mantle and/or reducing its wear, in which method the shoe press used comprises a press roll (1) and a backing roll, said press roll (1) comprising a rotating, liquid-impermeable roll mantle (2), a solid and preferably non-rotatable support beam (3) going axially through the roll mantle and having a stub shaft (4, 5) at each end of it, at least one press shoe supported by the support beam and having a concave surface part, elements for pressing the concave surface part against the roll mantle so that the mantle together with the backing roll can form a pressing zone, two roll mantle end pieces (6, 7) axially movable on each stub shaft, fastening elements for fastening the axial ends of the roll mantle to each roll mantle end piece, and at least one element for tightening the elastic roll mantle and/or moving it axially on each respective stub shaft. The roll mantle is tightened and/or displaced by means of a common actuator (8) functionally connected to both roll mantle end pieces, both roll mantle end pieces (6, 7) being moved simultaneously by said actuator.
Method for tightening a shoe press roll mantle and/or reducing its wear, in which method the shoe press used comprises a press roll (1) and a backing roll, said press roll (1) comprising a rotating, liquid-impermeable elastic roll mantle (2), a solid non-rotatable support beam (3) going axially through the roll mantle and having a stub shaft (4, 5) at each end of it, at least one press shoe supported by the support beam and having a concave surface part, elements for pressing the concave surface part against the roll mantle so that the mantle together with the backing roll can form a pressing zone, two roll mantle end pieces (6, 7) axially movable on each stub shaft, fastening elements for fastening the axial ends of the roll mantle to each roll mantle end piece, and at least one element for tightening the elastic roll mantle and/or moving it axially on each respective stub shaft, comprising the following steps:
Apparatus for tightening a shoe press roll mantle and/or reducing its wear, said shoe press comprising a press roll (1) and a backing roll, said press roll (1) comprising a rotating, liquid-impermeable elastic roll mantle (2), a solid non-rotatable support beam (3) going axially through the roll mantle and having a stub shaft (4, 5) at each end of it, at least one press shoe supported by the support beam and having a concave surface part, elements for pressing the concave surface part against the roll mantle so that the mantle together with the backing roll can form a pressing zone, two roll mantle end pieces (6, 7) axially displaceable on each stub shaft, fastening elements for fastening the axial ends of the roll mantle to each roll mantle end piece, and at least one element for tightening the elastic roll mantle and/or displacing it axially on each respective stub shaft, characterized in that the apparatus comprises at least one common actuator (8) functionally connected to both roll mantle end pieces for moving both roll mantle end pieces (6, 7) simultaneously in order to achieve a tightening of the roll mantle (3) and/or its displacement on each respective stub shaft (4, 5).
Dependencies are inferred from the claim text.