Closing valve for a regulation valve of a variable-crown roll in

Details Closing valve for a regulation valve of a variable-crown roll in Closing valve for a regulation valve of a variable-crown roll in

1998-12-17

2000-10-24

Bryant, David P.

Roll or roller

Rotatable relative to supporting shaft

Paper treatment

251347, F16K 3100

Patent

active

061359351

ABSTRACT:
A closing valve for a regulation valve of a roll in a paper machine, such as a variable-crown roll, including a frame part arranged between the regulation valve of a regulation valve block and a block frame and in which pressure medium ducts are formed. The closing valve includes a connecting part movable in relation to the frame part and having closing members mounted thereon and which are arranged to extend into the pressure medium ducts in the frame part. When the connecting part is displaced in relation to the frame part, the closing members attached to the connecting part close and open the pressure medium ducts in the frame part. A variable-crown roll including one or more closing valves is also disclosed.

REFERENCES:
patent: 2330127 (1943-09-01), Lehmberg
patent: 4270727 (1981-06-01), Norman
patent: 4316481 (1982-02-01), Fillman
patent: 5010913 (1991-04-01), Guerster et al.
patent: 5158105 (1992-10-01), Conway

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