SETT OCH ANVENDNING AV ETT I OCH FOR SIG KENT MEDEL FOR ATT ASTADKOMMA TETNING MELLAN SKRUVFORMIGA YTOR PA MED VARANDRA ROTERBART INGRIPANDE DRIV- OCH LOPSKRUVAR I EN SKRUVPUMP

摘要

The seal is provided between screw-shaped surfaces on drive and running screws (1,2) which rotatably engage with each other in a screw pump. At least one (a) of the screw-form surfaces is lined with softer material than that for the screws. - The screws are rotated in their installation position, with superfluous material being worn off from the surfaces until they fit tightly against one another.(2)