(57) The present invention relates to an overflow pit with adjustable channel.
The pit is constituted of an external structure (2) comprising an inlet opening (3)
envisaged to house one end of an inlet conduit (30), a first outlet hole (4) envisaged
to house one end of an overflow conduit (40) and a second hole (5) envisaged to house
one end of an outlet conduit (50) in which the opening (3) and the first hole (4)
feature runoff surfaces at the same height, while the second hole (5) is housed below
the first hole (4), a chute (6) is located between the opening (3) and the second
hole (5) and envisaged to mutually connect, in a uniform fashion, the opening (3)
and the second hole (5). The structure comprises furthermore: a connection between
the opening (3) and the first hole (4) obtained by means of a channel (7), which is
essentially composed of a blade (70) and a couple of lateral walls (71) laid out in
a mutually parallel fashion; a couple of containment bulkheads (9), laid out in a
mutually parallel fashion and externally to the lateral walls (71); a shaped collar
(10) located in proximity to the opening (3), immediately after the inlet conduit
(30); and adjustment elements which adjust the channel (7) to reduce the rate of the
flow which runs from the inlet conduit to the outlet conduit through the chute (6)
and allow the blade (70) to be raised or lowered, varying its position according to
the rate of the flow that has to reach the outlet conduit and the rate of the flow
that has to reach the overflow conduit.
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