Device for generating negative pressure inside a mantle of a rev

Details Device for generating negative pressure inside a mantle of a rev Device for generating negative pressure inside a mantle of a rev

1988-10-27

1989-11-21

Hastings, Karen

Paper making and fiber liberation

Apparatus

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

29114, 291211, 162369, 162372, 210406, 2104161, D21F 310

Patent

active

048820113

ABSTRACT:
The present invention concerns a device for generating negative pressure inside a cylindrical roll mantle of a revolving roll. The roll has a roll mantle provided with through-holes, grooves or equivalent apertures and confining a suction chamber in the interior thereof, in which a negative pressure can be generated by suctioning air out of the suction chamber. A suction flow directed towards the suction chamber thereby prevails in the holes, grooves or equivalent apertures of the roll mantle. At least one rotor blower or equivalent is attached to the roll to revolve along with the roll, with an intake side of the rotor being connected to the suction chamber of the roll. The movement of rotation of the roll thereby produces rotary movement of the rotor or equivalent, which in turn generates negative pressure in the suction chamber. Thus, in the arrangement in accordance with the present invention, external equipment of negative pressure or a separate piping system is not needed.

REFERENCES:
patent: 3091563 (1963-05-01), Meyer
patent: 3201309 (1965-08-01), Stuebe et al.

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