Device for creating a local water flow

Details Device for creating a local water flow Device for creating a local water flow

E - Fixed Constructions

02

F

E02F 5/28 (2006.01) E02B 3/02 (2006.01) E02F 5/00 (2006.01)

Patent

CA 2212282

A device for creating a local water flow or water jet in a body of water, in such a way that bed material from the bed below said body of water can be displaced, comprises a jet pipe (301), a screw (302) disposed rotatably in the jet pipe (301), and means (303) for supplying a countertorque in the opposite direction to the torque exerted on the device through the rotation of the screw. According to the invention, a second screw (303) is accommodated in the jet pipe (301), which second screw (303) is rotatable in the opposite direction to the direction of rotation of the first screw (302), and the pitch angle of which is opposite to that of the first screw (302).

Dispositif pour la création d'un écoulement d'eau ou jet d'eau localisé dans une masse d'eau, de manière à déplacer les matières constitutives du fond situé sous cette masse d'eau. Ce dispositif comporte une buse tubulaire (301), une vis (302) montée rotative dans la buse (301), et des moyens (303) engendrant un couple antagoniste dans le sens contraire à celui du couple imprimé au dispositif par la rotation de la vis. Une seconde vis (303) est reçue dans la buse (301) et montée rotative dans le sens contraire au sens de rotation de la première vis (302), et son angle de pas est contraire à celui de la première vis (302).

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