Patent ID: 7713359

Claim:
Device for interior flushing of spaces in tanks or containers, comprising: at least one pipe ( 6 , 8 , 11 ) for the supply of flushing liquid ( 7 ) to the space ( 2 ), a rotatable part ( 8 ) of said pipe ( 6 , 8 , 11 ) has at least one flushing nozzle ( 9 ) for discharging jets ( 10 ) of flushing liquid; a driving or operating device ( 22 ) to rotate said rotatable part ( 8 ) about a geometric rotation axis (R 1 A) and the flushing nozzle ( 9 ) about another geometric rotation axis (R 2 A), the driving device ( 22 ) is provided to be brought to rotate in opposite rotary directions (R 1 , R 2 ) by reversing the rotary direction of the driving device ( 22 ); a switch device ( 23 ) is provided to bring either said rotatable part ( 8 ) or the flushing nozzle ( 9 ) to rotate in dependence of the rotary direction (R 1 or R 2 ) of the driving device ( 22 ); a control device ( 48 ) is provided to control the driving device ( 22 ) to rotate in one or the opposite rotary direction (R 1 or R 2 ), wherein the switch device ( 23 ) comprises two driving gears ( 24 , 25 ) which each includes a transmission element pair ( 26 , 27 ), a movement transfer means ( 28 ) is provided to transmit the rotary movements of the driving device ( 22 ) to the transmission element pairs ( 26 , 27 ) of the two driving gears ( 24 , 25 ) through two one-way movement transfer devices ( 29 , 30 ) of which each is associated with the transmission element pair ( 26 , 27 ) in each driving gear ( 24 , 25 ), and one of said one-way movement transfer devices ( 29 or 30 ) is provided to transmit the movement of the movement transfer means ( 28 ) to the transmission element pair ( 26 or 27 ) of one of the driving gears ( 24 or 25 ) when the movement transfer means ( 28 ) is driven in one direction by the driving device ( 22 ), while the other one of said one-way movement transfer devices ( 30 or 29 ) is provided to simultaneously permit clearance of the movement of the movement transfer means ( 28 ) to the transmission element pair ( 27 or 26 ) of the other one of the driving gears ( 25 or 24 ) when the movement transfer means ( 28 ) is driven in said direction by the driving device ( 22 ) and vice versa.