About this machine

The Drais TR 50 is a used mixer and blender — sometimes referred to as a ploughshare mixer or paddle mixer in industrial contexts — designed for intensive mixing, blending, and drying applications. Drais is a well-established German manufacturer with a long history of producing process equipment for the chemical, pharmaceutical, and fine-chemical industries, and their vacuum mixer-dryers are widely used in pilot-plant and production environments where controlled processing conditions are essential.

This particular unit is a vacuum mixer, dryer, and inclined-blade mixer combined in a single machine, equipped with an explosion-protected (EX-protected) configuration and an integrated chopper. The product chamber is constructed from stainless steel grade 1.4571, a molybdenum-bearing austenitic alloy chosen for its corrosion resistance in demanding process environments. The mixing unit itself was fully renewed in November 2008 by Lödige, a specialist in this class of equipment, indicating significant refurbishment work was carried out at that time.

The chopper drive delivers 10.5 kW and is adjustable, operating across a speed range of 31.5 to 380 rpm, with motor speeds of 1,445 and 2,905 rpm. The product chamber has a working capacity of 56.5 litres, making this a pilot-plant-scale unit well suited to process development and small-batch production. The chamber operates under vacuum to negative pressure and up to 6 bar positive pressure, and is rated for product temperatures up to 300 °C. A double jacket surrounds the chamber, with a jacket volume of 7 litres and a jacket pressure rating of 6 bar, allowing precise thermal control through heating or cooling media. The machine also features a head condenser, which supports drying operations by condensing vapours driven off during the process. Sealing is provided by a double-acting mechanical seal, rated for the full pressure range of -1 to +6 bar.

The machine weighs approximately 2,000 kg and has overall dimensions of approximately 2,200 mm long by 1,620 mm wide by 2,065 mm high. It dates from 1981, is located in Germany, and is described as being in good condition, having come directly from a plant extraction of a pilot-plant facility.

This description was generated automatically from the listing details and may not reflect every specification. Please confirm with the seller before purchase.