Device for dispensing fluid jets without a rotating joint

1. A device for dispensing one or more jets of fluid ( 6 ) comprising a fluid conveying pipeline ( 7 ) configured to feed a fluid to one or more fluid dispensing nozzles ( 5 ) arranged at the downstream end of said pipeline ( 7 ), and a motor ( 1 ) collaborating with the fluid conveying pipeline ( 7 ) via a rotary transmission shaft ( 2 ) and a transmission mechanism ( 4 a , 4 b ), in which device:

the fluid conveying pipeline ( 7 ) comprises an upstream portion ( 7 a ) of first axis (XX) and a downstream portion ( 7 b ) of second axis (YY), the first and second axes (XX, YY) between them making an angle (α) of between 5 and 50°,

the downstream portion ( 7 b ) of second axis (YY) comprising the downstream end of the pipeline ( 7 ) with said fluid dispensing nozzle or nozzles,

and wherein the transmission mechanism ( 4 a , 4 b ) comprises motion-inducing elements capable of acting on said downstream portion ( 7 b ) of pipeline to impart a determined movement to it,

further wherein the transmission mechanism ( 4 a , 4 b ) comprises:

a support pinion ( 4 b ) capable of rotational movement about a rotation axis situated at the center of said support pinion ( 4 b ),

the fluid conveying pipeline ( 7 ) being positioned eccentrically and running freely through said support pinion ( 4 b ), and

a pinion drive ( 4 a ) collaborating with the support pinion ( 4 b ),

and the fluid conveying pipeline collaborates with an anchor ( 8 ) arranged on the pipeline upstream of the support pinion ( 4 b ), said anchor ( 8 ) forming all or part of a setting system configured to allow adjustment the length of fluid conveying pipeline between the anchor ( 8 ) and the downstream end of said pipeline ( 7 ).

2. The device as claimed in claim 1 , wherein the anchor ( 8 ) is designed and able to be attached to or detached from said pipeline ( 7 ) so as to hold said pipeline ( 7 ) when the anchor is attached to the pipeline ( 7 ) or free said pipeline when the anchor is detached from the pipeline ( 7 ) and thus allow the length of pipeline ( 7 ) to be set, said length being measured between the anchor means ( 8 ) and the downstream end of the pipeline ( 7 ).

3. The device of claim 1 , wherein the first and second axes (XX, YY) between them make an angle (α) of between 10 and 40°.

4. The device of claim 1 , wherein a transmission shaft ( 2 ) collaborates with the pinion drive ( 4 a ), and the pinion drive ( 4 a ) collaborates with said support pinion ( 4 b ) in such a way as to be capable of transmitting, via the pinion drive ( 4 a ), the rotational movement of the transmission shaft ( 2 ) to the support pinion ( 4 b ) and thus obtain a circular movement of the fluid dispensing nozzle or nozzles arranged at the downstream end of said pipeline ( 7 ).

5. The device of claim 1 , wherein the support pinion ( 4 b ) is held by pinion-holding elements comprising one or more slippers or rolling bearings.

6. The device of claim 1 , wherein the pipeline ( 7 ) is arranged in a passage ( 10 ) formed through the body of the support pinion ( 4 b ), which passage ( 10 ) is situated within a disk formed by the support pinion ( 4 b ), but not at the center of said disk.

7. The device of claim 1 , wherein holding elements ( 9 ) are provided to hold the support pinion ( 4 b ), the holding elements ( 9 ) being positioned on the support pinion ( 4 b ) at a distance R from the axis of rotation of the support pinion ( 4 b ) which distance is greater than the distance r between the rotation axis and an orifice of a passage ( 10 ).

8. The device of claim 7 , wherein the holding elements ( 9 ) are slippers, radial rolling bearings or spigots and/or the pinion drive ( 4 a ) is a pinion or a belt.

9. The device of claim 1 , wherein the anchor ( 8 ) comprises a clamping device, a gland, a split nut, an elastic taper or a rack-pinion system.

10. The device of claim 1 , wherein the pipeline ( 7 ) is a stainless steel tube.