Sluicegate structure

Claim 2

A flap sluice gate for temporary barrage of canals, access opening to basins, lagoons and the like when the level of the water on one side of said gate rises with respect to the other side, comprising a base arranged transversally on the bottom of the canal or opening to be dammed, a hollow wall element supported by said base, duct means for adduction and discharge of compressed air in and from said hollow wall element extending to the free end thereof, at least one hole formed on the border of said hollow wall element opposite to said free end, said duct means being connected with a compressed air source, the adduction and discharge of the air producing the outflow and inflow respectively of water through the said hole and therefore a buoyancy which causes the hollow wall element to rise from its horizontal immersion position in a dam position in which its free end portion emerges from the level of the rising water and wherein according to the improvement the hollow wall element has positive hinging means defining a hinge axis for rotatably positively supporting said wall on the base.

Claim 3

A flap sluice gate for temporary barrage of canals, access opening to basins, lagoons and the like when the level of the water on one side of said gate rises with respect to the other side, comprising a base arranged tRansversally on the bottom of the canal or opening to be dammed, a hollow wall element supported by said base, duct means for adduction and discharge of compressed air in and from said hollow wall element extending to the free end thereof, at least one hole formed on the border of said hollow wall element opposite to said free end, said duct means being connected with a compressed air source, the adduction and discharge of the air producing the outflow and inflow respectively of water through the said hole and therefore a buoyancy which causes the hollow wall element to rise from its horizontal immersion position in a dam position in which its free end portion emerges from the level of the rising water and wherein according to the improvement the hollow wall element has hinging means defining a hinge axis for rotatably supporting said wall on the base and wherein a union tube is provided connected with an end with the duct means which extends into the inside of the hollow wall element and bent like an elbow in a way to be aligned, with the opposite end, with the hinge axis of the said hollow wall element, compressed air duct means being further provided coming from the underground passage of the base, through a passage and seal joined with said union tube, the point of connection of said union tube with said compressed air duct means being contained in a case anchored to the base for closing said passage.

Claim 4

A flap sluice gate for temporary barrage of canals, access opening to basins, lagoons and the like when the level of the water on one side of said gate rises with respect to the other side, comprising a base arranged tRansversally on the bottom of the canal or opening to be dammed, a hollow wall element supported by said base, duct means for adduction and discharge of compressed air in and from said hollow wall element extending to the free end thereof, at least one hole formed on the border of said hollow wall element opposite to said free end, said duct means being connected with a compressed air source, the adduction and discharge of the air producing the outflow and inflow respectively of water through the said hole and therefore a buoyancy which causes the hollow wall element to rise from its horizontal immersion position in a dam position in which its free end portion emerges from the level of the rising water and wherein according to the improvement the hollow wall element has hinging means defining a hinge axis for rotatably supporting said wall on the base and wherein a union tube is provided connected with an end with the duct means which extends into the inside of the hollow wall element and bent like an elbow in a way to be aligned, with the opposite end, with the hinge axis of the said hollow wall element, compressed air duct means being further provided coming from the underground passage of the base, through a passage and seal joined with said union tube, the point of connection of said union tube with said compressed air duct means being contained in a case anchored to the base for closing said passage.

Claim 5

A sluice gate as claimed in claim 2, further comprising heated fluid circulation tubing having a section thereof extending coaxially to the hinge axis of the hollow wall elements.

Claim 6

A sluice gate as claimed in claim 2, wherein on the end of the union tube aligned with the hinge axis a cam projection is provided having two lobes suitable to operate, by means of a lever , a switch for the detection of the opening and closing positions of the sluice gate.