A milk tank system includes a first holder configured for intermediate storage of milk from several milkings of a milking device, and not being a milk glass； a second holder for storage of milk from the first holder； a transport device for transporting milk including a milk line from the first holder to the second holder, via which milk line the second holder may be brought into fluidic connection with the first holder, and a shut-off for shutting off the fluidic connection, in particular from the first holder to the milk line, wherein the transport device has a first operating state which is configured for collecting milk in the first holder, and a second operating state which is configured for transferring the milk from the first holder to the second holder, wherein the milk tank system further includes a control system for switching the transport device from the first to the second operating state when the milk in the first holder reaches a switching milk level which changes over time. Because the pumping of the milk from the intermediate milk storage vessel does not always begin at the same or comparable maximum milk level, but preferably at an ever increasing level, potentially caking milk residue is always rinsed away on a subsequent filling.La présente invention concerne un système de cuve à lait comprenant • un premier récipient (10) configuré pour le stockage intermédiaire de lait provenant de plusieurs instances de traite d'un dispositif de traite (4, 6), et n'étant pas un verre à lait (6), • un second récipient (12) pour le stockage du lait provenant du premier récipient, • un dispositif de transport destiné au transport de lait, comprenant • une ligne de lait (11) allant du premier récipient au deuxième récipient, par l'intermédiaire de laquelle ligne de lait le second récipient peut être amené en communication fluidique avec le premier récipient, et • un moyen d'obturation (25) pour arrêter la communication de fluide, en particulier du premier récipient
