Drain provided with a disengagement device
The invention relates to a drain comprising: a body having at least one fluid intake opening and at least one fluid discharge opening, a valve provided with at least one lug, and a disengagement device comprising: a fixed guide, able to be mounted so as to be fixed with respect to a body, a movable guide, comprising at least one housing for receiving the lug, the fixed guide and/or the movable guide comprising at least one projection and/or at least one recess, in particular having a shape complementary to the projection, and pressure spring, able to bias the movable guide against the fixed guide so that the projection cooperates with the recess.
1 . Drain comprising:
a body having at least one fluid inlet opening and at least one fluid discharge opening;
a valve mounted so as to move in translation and in rotation relative to the body, the valve comprising at least one toe;
a disengaging device comprising:
a fixed guide, capable of being mounted so as to be fixed relative to the body;
a movable guide, comprising at least one receiving housing for the at least one toe;
wherein one element chosen among the fixed guide and the movable guide comprises at least one projection and the other element chosen among the fixed guide and the movable guide comprises at least one recess whose shape is complementary to that of the at least one projection; and
a pressure spring, capable of urging the movable guide against the fixed guide so that the at least one projection cooperates with the at least one recess, so that the pressure spring is able to be compressed so as to allow the movable guide to rotate relative to the fixed guide, when an overtorque is applied to the valve while the at least one toe is still inside the at least one receiving housing.
2 . The drain according to claim 1 , wherein a return spring is arranged between a shoulder of the valve and the movable guide.
3 . The drain according to claim 1 , wherein the fixed guide comprises at least one projecting portion for cooperating with a slot of corresponding shape in the body.
4 . An aircraft tank comprising a drain according to claim 1 .
5 . An aircraft comprising an aircraft tank comprising a drain according to claim 1 .
6 . The drain according to claim 1 , wherein the movable guide comprises a cylindrical portion inserted into a hollow internal space in the fixed guide and comprising the at least one receiving housing for the at least one toe.
7 . The drain according to claim 6 , wherein the at least one projection is made on an upper face of the annular shoulder of the movable guide.
8 . The drain according to claim 6 , wherein the cylindrical portion of the movable guide comprises at least one through opening angularly offset relative to the at least one receiving housing for the at least one toe.
9 . The drain according to claim 1 , wherein the fixed guide comprises an annular portion and in that the at least one recess is provided in one end of the annular portion of the fixed guide.
10 . The drain according to claim 9 , wherein an external face of the annular portion of the fixed guide and an internal face of the body respectively comprise a first groove and a second groove facing each other.
11 . The drain according to claim 10 , wherein a rod cooperates with the first groove and the second groove.
12 . The drain according to claim 11 , wherein the movable guide comprises an annular shoulder extending radially from an external face of the cylindrical portion.