Dosing lance for dosing a cleaning agent in a canister for a cleaning device, canister system with a dosing lance, cleaning device with a dosing lance and method for operating a dosing lance introduced into a canister

摘要

The approach presented here relates to a metering lance (100) for metering a cleaning agent (105) in a canister (110) for a cleaning device (115). The metering lance (100) has a suction channel (120), at least one float (125), a canister lid (130) and a position detection device (135). The suction channel (120) is shaped to suck in the cleaning agent (105) from the canister (110). The float (125) is coupled to the suction channel (120) and has a float magnet (S) which is movable over a channel length of the suction channel (120), the float (125) being designed to move on a surface of the cleaning agent (105) to swim in the canister (110). The canister lid (130) can be coupled or is coupled to the suction channel (120) and has a canister lid magnet (D) for detecting a canister opening height of a canister opening (145) of the canister (110). The position detection device (135) has a plurality of position sensors (150) which are arranged so as to be clearly identifiable and extend over the duct length of the intake duct (120), the position sensors (150) being designed to determine a canister lid position using one of the canister lid magnets ( D) to detect the canister lid magnetic field caused and / or a float position using a float magnetic field caused by the float magnet (S).