Shoe press and shoe support device therefor
AssigneeMetso Paper Karlstad AB
InventorErik Brox
Life of this patent
Estimating the term…
Abstract
A shoe press comprises a shoe support device mounted downstream of the press shoe of the shoe press to carry forces acting on the press shoe and having a first support element that has a support surface facing the press shoe and is fixedly connected to a stationary stand of the shoe press, and a second support element in the form of at least one rolling body arranged in a space between the support surface of the first support element and an opposite support surface of the press shoe to be in contact with the two support surfaces during operation. The rolling body is arranged to roll along the two support surfaces when the press shoe is moved relative to a second support element in the shoe press, while rotating about an axis of rotation that moves in relation to and in the same direction as the press shoe.
Claims31
A shoe press for treating a traveling web of paper or board, comprising:
- first and second press elements arranged to form an extended nip therebetween in which the web is pressed, the first press element comprising a press shoe movable along a pressing direction toward and away from the second press element, an impermeable belt arranged to travel in an endless loop and make sliding contact with a pressing surface of the press shoe, and a power transmission member structured and arranged to urge the press shoe in the pressing direction toward the second press element to press the web in the nip;
- and
- a shoe support device comprising a first support element arranged such that a support surface of the first support element faces an opposing support surface of the press shoe with a space being defined between said support surfaces, the shoe support device further comprising a second support element in the form of at least one rolling body arranged in the space between said support surfaces and in rolling contact with said support surfaces such that upon movement of the press shoe relative to the second press element the at least one rolling body rolls along said support surfaces and rotates about an axis of rotation that moves relative to and in the same direction as the press shoe.
A shoe support device for a shoe press of a machine for manufacturing or treating a paper or cardboard web, wherein the shoe press includes first and second press elements arranged to form an extended nip therebetween in which the web is pressed, the first press element comprising a press shoe movable along a pressing direction toward and away from the second press element, an impermeable belt arranged to travel in an endless loop and make sliding contact with a pressing surface of the press shoe, and a power transmission member structured and arranged to urge the press shoe in the pressing direction toward the second press element to press the web in the nip, the shoe support device comprising:
- a first support element arranged such that a support surface of the first support element faces an opposing support surface of the press shoe with a space being defined between said support surfaces, the shoe support device further comprising a second support element in the form of at least one rolling body arranged in the space between said support surfaces and in rolling contact with said support surfaces such that upon movement of the press shoe relative to the second press element the at least one rolling body rolls along said support surfaces and rotates about an axis of rotation that moves relative to and in the same direction as the press shoe.
A shoe press for a machine for manufacturing or treating a paper or cardboard web, the shoe press comprising:
- first and second press elements arranged to form an extended nip therebetween in which the web is pressed, the first press element comprising a press shoe movable along a pressing direction toward and away from the second press element, an impermeable belt arranged to travel in an endless loop and make sliding contact with a pressing surface of the press shoe, a support stand for supporting the press shoe, and a power transmission member structured and arranged between the support stand and the press shoe to urge the press shoe in the pressing direction toward the second press element to press the web in the nip;
- and
- a shoe support device arranged to react lateral forces acting on the press shoe in a cross-machine direction during operation, the shoe support device comprising at least first and second pairs of support surfaces one of which support surfaces of each pair is fixed relative to the press shoe and the other of which support surfaces of each pair is fixed relative to the support stand, and which support surfaces extend in a machine direction and define a space therebetween, and at least one rolling body arranged in the space between each pair of support surfaces so as to roll along said support surfaces about a rotation axis that moves relative to and in the same direction as the press shoe.
A shoe support device for a shoe press of a machine for manufacturing or treating a paper or cardboard web, wherein the shoe press includes first and second press elements arranged to form an extended nip therebetween in which the web is pressed, the first press element comprising a press shoe movable along a pressing direction toward and away from the second press element, an impermeable belt arranged to travel in an endless loop and make sliding contact with a pressing surface of the press shoe, a support stand for supporting the press shoe, and a power transmission member structured and arranged to urge the press shoe in the pressing direction toward the second press element to press the web in the nip, the shoe support device reacting forces that act on the press shoe in a cross-machine direction and comprising:
- at least first and second pairs of support surfaces, one of the support surfaces of each pair being fixed relative to the press shoe and the other of the support surfaces of each pair being fixed relative to the support stand, support surfaces of each pair extending in a machine direction and defining a space therebetween, and at least one rolling body arranged in the space between each pair of support surfaces so as to roll along said support surfaces about a rotation axis that moves relative to and in the same direction as the press shoe.
Dependencies are inferred from the claim text.