(57) Feeder channel (1) for diluting fluid, such as for diluting water, which feeder channel
is in connection with the headbox (10) of a paper machine and comprises one or more
reservoir-type spaces (7), such as a chamber, for receiving diluting fluid, which
space comprises one or more walls (4), and that an aperture (13) is formed in the
reservoir-type space (7), via which aperture the diluting fluid can be conducted into
the stock flow space (9) of the headbox, and that one or more shut-off/adjustment
means (5), with which the flow of diluting fluid via the aforementioned aperture (13)
can be adjusted, is fitted into the feeder channel (1), and that the shutoff/adjustment
means (5) is a shut-off/adjustment means that can be moved in the longitudinal direction
of an aperture that is in connection with the aperture (13) formed in the wall (4)
of the reservoir-type space, and that in the shutoff/adjustment means (5) that is
partly or wholly inside the aperture there are one or more cavities and/or recesses
(6, 14), via which the flow of diluting fluid from the reservoir-type space (7) either
directly or via an intermediate piece (11) into the stock flow space (9) can be adjusted
by moving the shut-off/adjustment means (5) in the aperture (13), and that the shut-off/adjustment
means (5) comprises a support surface or support surfaces (6"), which can rest on
the inside surface (13') of the aperture (13) for preventing vibration of the adjustment
means (5) caused by the flow of the diluting fluid at least during operation of the
shut-off/adjustment means.
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