Stock inlet for a paper machine

Details Stock inlet for a paper machine Stock inlet for a paper machine

1973-12-04

1976-01-27

Lindsay, Jr., Robert L.

Paper making and fiber liberation

Apparatus

Automatic control

162198, 162259, D21F 102, D21F 104, D21F 106

Patent

active

039350614

ABSTRACT:
The vacuum pressure in the suction box which extends across the sheet-forming zone and terminates at the end of the zone is controlled in dependence on the pressure of the stock in the inlet duct opposite the suction box in order to maintain a constant column of stock liquid in the inlet duct at the end of the inlet duct. Various combinations of vacuum controlled suction boxes can be used.

REFERENCES:
patent: 3005490 (1961-10-01), Justus
patent: 3487686 (1970-01-01), Salomon
patent: 3631982 (1972-01-01), Lejeune
patent: 3642573 (1972-02-01), Genz et al.
patent: 3741865 (1973-06-01), Lejeune
patent: 3764465 (1973-10-01), Bartley et al.

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