Abstract: A feed device for paste-like mixtures such as paper pulp is designed to form a flat film of paste through at least one nozzle at the outlet from a distribution chamber. Paste-like mixture feed circuits discharge into the distribution chamber and each circuit comprises a liquid feed channel and a concentrated paste feed channel each incorporating a flowrate adjuster valve and connected downstream of the valves by a mixer. The mixer comprises an outlet connected to an inlet of the distribution chamber. The distribution chamber comprises ejection channels delimited by longitudinal partitions. Each circuit is in corresponding relationship with one ejection channel.
Type:
Grant
Filed:
October 16, 1989
Date of Patent:
July 9, 1991
Assignee:
S.E.M.T.I. Societe a Responsabilite Limitee
Abstract: A drier drum, in particular for papermaking machines, for textile machines and the like, comprises a drum cylinder, end flanges carrying the drum cylinder, a drive system mechanically coupled to at least one of the flanges to rotate it and heating means. The drum comprises a fixed refractory material cylindrical sleeve covered with a heat reflecting coating disposed coaxially inside the drum cylinder and heating means comprising main electrical heating elements of elongate shape adapted to be energized continuously during functioning thereof and profile correcting electrical heating elements of elongate shape adapted to be energized selectively. At least some of the main heating elements are longer than any of the profile correcting heating elements. The electrical heating elements are carried by the cylindrical sleeve.
Type:
Grant
Filed:
September 25, 1989
Date of Patent:
February 5, 1991
Assignee:
S.E.M.T.I. Societe a Responsabilite Limitee