Abstract: A liquid ejection apparatus for cleaning of a tank. The liquid ejection apparatus comprising: a base member having a first end for receiving the liquid from a liquid line, a rotary head that is rotatably connected to the base member and a rotary nozzle hub that is rotatably connected to the rotary head. The rotary nozzle hub comprises a primary liquid ejection nozzle for ejecting a liquid in a pattern towards an interior surface of the tank, and a secondary liquid ejection nozzle that is configured to, during at least a part of a revolution of the rotary nozzle hub, eject the liquid in a pattern towards an external surface of the base member.

Abstract: A liquid ejection apparatus comprising a fluid line configured to extend into a tank and to receive a liquid, a rotary head being arranged on the pipe and fitted with a rotary hub that comprises a liquid ejection nozzle for ejecting the liquid, the rotary head being rotatable in a first direction and the rotary hub being rotatable in a second direction, such that the liquid ejected by the nozzle is ejected in a pattern on an interior surface of the tank. The liquid ejection nozzle comprises a first liquid outlet capable of ejecting the liquid in a first direction towards the interior surface of the tank, and a second liquid outlet capable of ejecting the liquid in a second direction towards the interior surface of the tank.

Abstract: A liquid ejection apparatus for cleaning of a tank. The liquid ejection apparatus comprising: a base member having a first end for receiving the liquid from a liquid line, a rotary head that is rotatably connected to the base member and a rotary nozzle hub that is rotatably connected to the rotary head. The rotary nozzle hub comprises a primary liquid ejection nozzle for ejecting a liquid in a pattern towards an interior surface of the tank, and a secondary liquid ejection nozzle that is configured to, during at least a part of a revolution of the rotary nozzle hub, eject the liquid in a pattern towards an external surface of the base member.

Abstract: A drive system (100) for a cleaning device for cleaning a tank (1) including a brake arrangement (7, 8, 13) for regulating the speed of the magnetic hysteresis coupling, and where the brake arrangement is arranged in the vicinity of a second coupling part (5) of the magnetic hysteresis coupling, and where brake arrangement includes brake parts (7, 8, 13) that interacts with the second coupling part of the magnetic hysteresis coupling to adjust the rotation of the second coupling part of the magnetic hysteresis coupling.

Abstract: A liquid ejection apparatus comprising a fluid line configured to extend into a tank and to receive a liquid, a rotary head being arranged on the pipe and fitted with a rotary hub that comprises a liquid ejection nozzle for ejecting the liquid, the rotary head being rotatable in a first direction and the rotary hub being rotatable in a second direction, such that the liquid ejected by the nozzle is ejected in a pattern on an interior surface of the tank. The liquid ejection nozzle comprises a first liquid outlet capable of ejecting the liquid in a first direction towards the interior surface of the tank, and a second liquid outlet capable of ejecting the liquid in a second direction towards the interior surface of the tank.

Abstract: When, according to the invention, constructing a drive system for rotating a cleaning head in a tank and allowing the system to comprise a hysteresis coupling having two magnetic parts, one being present inside the liquid space (4) and the other outside the liquid space, respectively, a completely liquid-tight separation between the housing (2) and a gear (14) may be ensured. The magnetic part (8, 18) of the hysteresis coupling may be formed by electromagnets, and with a displaceable (13) position of one part relative to the other part (11, 19), the coupling may be adjusted with respect to the transferred torque and/or speed.

Abstract: A drive system (100) for a cleaning device for cleaning a tank (1) including a brake arrangement (7, 8, 13) for regulating the speed of the magnetic hysteresis coupling, and where the brake arrangement is arranged in the vicinity of a second coupling part (5) of the magnetic hysteresis coupling, and where brake arrangement includes brake parts (7, 8, 13) that interacts with the second coupling part of the magnetic hysteresis coupling to adjust the rotation of the second coupling part of the magnetic hysteresis coupling.

Abstract: When, according to the invention, a cleaning head is provided with a hysteresis coupling (9, 11) between the turbine (3) and the gear in the gear housing (13), the gear will remain separated from the turbine and not be subjected to liquid impact. The hysteresis coupling (9, 11) may be adjusted using electromagnets (9) as an inductor, which allows control/regulation of the rotating movements of the cleaning head to achieve the best possible cleaning pattern.

Abstract: When, according to the invention, constructing a drive system for rotating a cleaning head in a tank and allowing the system to comprise a hysteresis coupling having two magnetic parts, one being present inside the liquid space (4) and the other outside the liquid space, respectively, a completely liquid-tight separation between the housing (2) and a gear (14) may be ensured. The magnetic part (8, 18) of the hysteresis coupling may be formed by electromagnets, and with a displaceable (13) position of one part relative to the other part (11,19), the coupling may be adjusted with respect to the transferred torque and/or speed.

Abstract: When, according to the invention, a cleaning head is provided with a hysteresis coupling (9, 11) between the turbine (3) and the gear in the gear housing (13), the gear will remain separated from the turbine and not be subjected to liquid impact. The hysteresis coupling (9, 11) may be adjusted using electromagnets (9) as an inductor, which allows control/regulation of the rotating movements of the cleaning head to achieve the best possible cleaning pattern.

Abstract: When, according to the invention, constructing a drive system for rotating the cleaning head in a tank and allowing the system to comprise a hysteresis coupling having two magnetic parts which are present inside the liquid space (4) and outside this, respectively, a completely liquid-tight separation between the housing (2) and the gear (14) may be ensured. The magnetic part (8, 18) of the hysteresis coupling may be formed by electromagnets, and with a displaceable (13) position of the one part relative to the other part (11, 19) the coupling may be adjusted with respect to the transferred torque and/or speed.