Press arrangement with lever arm to move press shoe

Details Press arrangement with lever arm to move press shoe Press arrangement with lever arm to move press shoe

1997-08-04

1999-12-07

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

100153, 162361, D21F 302

Patent

active

059976942

ABSTRACT:
A press arrangement of a paper or cardboard machine for the treatment of a fibrous pulp sheet in a press opening that is extended in the run direction of the fibrous pulp sheet. The press opening is defined by two press surfaces, at least one of which is constructed of a flexible press sleeve that is guided over at least one press shoe. The flexible press sleeve is further able to press against the opposing press surface with the aid of the press shoe due to the creation of a fluid cushion between the press shoe and the press sleeve. The press shoe is thus able to be tensioned such that a resulting main press force is exerted in a direction that runs substantially perpendicular to the fibrous pulp sheet being guided through the press opening. A lever is designed to load the press shoe with an positive or negative force that acts on the press shoe substantially perpendicular to the resulting main press force. The additional positive or negative forces transfer a tilting moment to the press shoe whereby the press shoe tilts around a respective tilting axis. The tilting axis extends substantially perpendicular to the run direction of the fibrous pulp sheet and in the transverse direction of the press arrangement. Thus, the additional forces can, substantially, independently influence the pressure profile in the press opening, set along the run direction of the fibrous pulp sheet.

REFERENCES:
patent: 4713147 (1987-12-01), Saarinen
patent: 4917768 (1990-04-01), Iimarinen et al.
patent: 5167768 (1992-12-01), Cronin et al.
patent: 5676799 (1997-10-01), Meschenmoser et al.

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