A cleaning unit for tobacco industry machines, - wherein the tobacco industry machine is configured to process a moving train of rod-like elements (S1, S2) separated by compartments and partially wrapped with a wrapper, wherein the compartments are filled with a loose material forming segments of the loose material; - wherein the cleaning unit is positioned in the tobacco industry machine in a cleaning zone that is located between: ∘ a filling zone for filling the loose material into the compartments between the rod-like elements (S1, S2) ∘ and a garniture zone for forming the train of the rod-like elements (S1, S2) to a continuous filter rod; - wherein the cleaning unit is configured to remove contaminations of the loose material from the rod-like elements (S1, S2), the segments of the loose material and the wrapper; - and wherein the cleaning unit comprises: - at least one cleaning element (11, 11'), located in the cleaning zone, for removing the contaminations of the loose material from the rod-like elements (S1, S2); - at least one suction element for removing the contaminations of the loose material from the rod-like elements (S1 S2); - a shifting mechanism configured to move covering elements to positions in which the covering elements at least partially cover the compartments filled with the loose material between the rod-like elements (S1, S2) during the movement of the train in a vicinity of the suction nozzle; - and wherein the covering elements, at a portion of their track of movement, are configured to move in parallel to the direction of movement of the rod-like elements (S1, S2); characterized in that - the cleaning unit further comprises: - an outlet partition at an outlet from the cleaning zone for limiting an uncontrolled displacement of contaminations from the cleaning zone to the garniture zone, located above the train of the rod-like elements and having a passage through which the covering elements pass. - wherein the tobacco industry machine is configured to process a moving train of rod-like elements (S1, S2) separated by compartments and partially wrapped with a wrapper, wherein the compartments are filled with a loose material forming segments of the loose material; - wherein the cleaning unit is positioned in the tobacco industry machine in a cleaning zone that is located between: ∘ a filling zone for filling the loose material into the compartments between the rod-like elements (S1, S2) ∘ and a garniture zone for forming the train of the rod-like elements (S1, S2) to a continuous filter rod; ∘ a filling zone for filling the loose material into the compartments between the rod-like elements (S1, S2) ∘ and a garniture zone for forming the train of the rod-like elements (S1, S2) to a continuous filter rod; - wherein the cleaning unit is configured to remove contaminations of the loose material from the rod-like elements (S1, S2), the segments of the loose material and the wrapper; - and wherein the cleaning unit comprises: - at least one cleaning element (11, 11'), located in the cleaning zone, for removing the contaminations of the loose material from the rod-like elements (S1, S2); - at least one suction element for removing the contaminations of the loose material from the rod-like elements (S1 S2); - a shifting mechanism configured to move covering elements to positions in which the covering elements at least partially cover the compartments filled with the loose material between the rod-like elements (S1, S2) during the movement of the train in a vicinity of the suction nozzle; - and wherein the covering elements, at a portion of their track of movement, are configured to move in parallel to the direction of movement of the rod-like elements (S1, S2); - at least one cleaning element (11, 11'), located in the cleaning zone, for removing the contaminations of the loose material from the rod-like elements (S1, S2); - at least one suction element for removing the contaminations of the loose material from the rod-like elements (S1 S2); - a shifting mechanism configured to move covering elements to positions in which the covering elements at least partially cover the compartments filled with the loose material between the rod-like elements (S1, S2) during the movement of the train in a vicinity of the suction nozzle; - and wherein the covering elements, at a portion of their track of movement, are configured to move in parallel to the direction of movement of the rod-like elements (S1, S2); - the cleaning unit further comprises: - an outlet partition at an outlet from the cleaning zone for limiting an uncontrolled displacement of contaminations from the cleaning zone to the garniture zone, located above the train of the rod-like elements and having a passage through which the covering elements pass. - an outlet partition at an outlet from the cleaning zone for limiting an uncontrolled displacement of contaminations from the cleaning zone to the garniture zone, located above the train of the rod-like elements and having a passage through which the covering elements pass.