Filtering device (100; 100') for large-scale filtration of fluids, in particular plastics material melts, which comprises at least: - a housing (20, 20') having at least one inlet channel (23; 71') and at least one outlet channel (26; 61') and - a filter carrying element (40, 40') which can be displaced longitudinally relative to a housing hole and which has at least one filter insert (10; 10') which is intended to be arranged in a production position in a filter chamber (24; 24') between the inlet channel (23; 71') and the outlet channel (26; 61') of the housing (20; 20'), - wherein the filter insert (10, 10') has a base element (12, 12') through which flow is possible and from which a fluid flow branches over a plurality of individual filter elements (11, 11') or in which a plurality of fluid flows are combined from the individual filter elements, characterised in that - the filter insert (10, 10') is arranged at an end-side end face of the filter carrier element (40, 40'), - in that the filter chamber (24, 24') is formed by - a housing hole which is securely closed at one end and which extends as far as an opening at an outer side of the housing, wherein the filter insert (10, 10') is intended to be inserted into the housing hole by displacing the filter carrier element (40, 40'), and - a closure element (41, 41') which, when the filter carrier element (40, 40') is lowered, can be placed into the housing hole or subsequently on the opening of the housing hole and/or can be inserted therein, - in that the closure element (41, 41') has on the filter carrier element (40, 40') at least one radial flow channel which overlaps in the production position with a radial flow channel or an inlet or outlet channel (23, 26) in the housing (20, 20') and which is redirected in an axial flow channel, which merges into the flow channel in the base element (12; 12') of the filter insert (10, 10'), - in that at least one flow channel to which the inlet or outlet channel (23, 26) is connected opens at the end face of the housing hole opposite the hole of the filter chamber. - a housing (20, 20') having at least one inlet channel (23; 71') and at least one outlet channel (26; 61') and - a filter carrying element (40, 40') which can be displaced longitudinally relative to a housing hole and which has at least one filter insert (10; 10') which is intended to be arranged in a production position in a filter chamber (24; 24') between the inlet channel (23; 71') and the outlet channel (26; 61') of the housing (20; 20'), - wherein the filter insert (10, 10') has a base element (12, 12') through which flow is possible and from which a fluid flow branches over a plurality of individual filter elements (11, 11') or in which a plurality of fluid flows are combined from the individual filter elements, - the filter insert (10, 10') is arranged at an end-side end face of the filter carrier element (40, 40'), - in that the filter chamber (24, 24') is formed by - a housing hole which is securely closed at one end and which extends as far as an opening at an outer side of the housing, wherein the filter insert (10, 10') is intended to be inserted into the housing hole by displacing the filter carrier element (40, 40'), and - a housing hole which is securely closed at one end and which extends as far as an opening at an outer side of the housing, wherein the filter insert (10, 10') is intended to be inserted into the housing hole by displacing the filter carrier element (40, 40'), and - a closure element (41, 41') which, when the filter carrier element (40, 40') is lowered, can be placed into the housing hole or subsequently on the opening of the housing hole and/or can be inserted therein, - in that the closure element (41, 41') has on the filter carrier element (40, 40') at least one radial flow channel which overlaps in the production position with a radial flow channel or an inlet or outlet channel (23, 26) in the housing (20, 20') and which is redirected in an axial flow channel, which merges into the flow channel in the base element (12; 12') of the filter insert (10, 10'), - in that at least one flow channel to which the inlet or outlet channel (23, 26) is connected opens at the end face of the housing hole opposite the hole of the filter chamber.