Trench cutter and method for producing a cut trench in the soil

A trench cutter for producing a cut trench in the soil to produce a diaphragm wall for a construction pit, comprising:

• a cutter frame,
• at least one pair of cutting wheels which are supported and driven in a rotatable manner on a lower end of the cutter frame, each cutting wheel having a plurality of cutting teeth along its outer circumference,
• a supply and/or discharge means for supplying or discharging a cutting liquid to or from the cut trench in the region of the cutting wheels, and
• a cleaning device spaced from the supply and/or discharge means and configured for cleaning the cutting wheels during the cutting operation with a cleaning fluid,
• wherein
• the cleaning device includes a plurality of cleaning nozzles which are directed onto the outer circumference of at least one cutting wheel and designed to inject the cleaning fluid to loosen adhering soil material,
• reamer plates are arranged on the cutter frame and configured for scraping off adhering soil material from the cutting wheels, and
• the cleaning nozzles are arranged between the reamer plates.