Doctor device

A coating machine for the application of a liquid to pasty application medium to a moving surface, the moving surface in the case of direct application being a surface of a fibrous web, the moving surface in the case of indirect application being a surface of a transfer element which discharges the medium onto the fibrous web, said coating machine comprising a doctor device set against the moving surface, said doctor device comprising:

• a cylindrical metering rod;
• a pressure tube with which said metering rod can be pressed against the moving surface for at least one of metering and leveling the medium applied;
• a top part directly holding said metering rod, said top part being similar to a polygon;
• a first holder arranged on and attached to said top part and holding said pressure tube;
• a bottom part connected to said top part, said bottom part being similar to a blade;
• a clamping tube;
• a second holder arranged on and attached to said bottom part and holding said clamping tube, said metering rod, said to part, said first holder, said pressure tube, said bottom part, said second holder, and said clamping tube forming a plurality of components of the doctor device, the doctor device being of a modular design such that the doctor device is configured for being installed in and removed form a coating machine as a unit and such that said plurality of components are each selectively interchangeably connectable with one another in a plurality of sizes and shapes, said first holder, said second holder, said pressure tube, and said clamping tube each being selectively prefabricated in one of a plurality of different designs, each of said plurality of designs of said first holder being interchangeable with one another in the doctor device so that said first holder can selectively hold any one of said plurality of designs of said pressure tube in the doctor device, each of said plurality of designs of said second holder being interchangeable with one another in the doctor device so that said second holder can selectively hold any one of said plurality of designs of said clamping tube in the doctor device.