Page 3 of catalogue Blast machines of Munk + Schmitz Oberflächentechnik GmbH & Co. KG

Dust-free blasting with closed-circuit Machines
Problast machines feature a closed-circuit system allowing blasting to be carried out at any place, in open or closed working environments, with no pollution and without interfering with other activities nearby. Immediately after the abrasive has been thrown onto the workpiece it is recovered inside the blast gun for recycling. The recycling system incorporates a cyclone with adjustable air wash.

Blast gun with ceramic insert

Problast machines are available as pressure-fed and suction-fed versions. • In the pressure-fed version abrasive is stored in a pressure vessel and metered by a feed valve into into the air stream which carries it via the blast hose to the nozzle where it is discharged at high velocity against the workpiece (up to supersonic speed). • In the suction-fed version abrasive is stored in a hopper and drawn via the blast hose to the nozzle where it is discharged together with the air against the workpiece.

Pressure-fed Problast 80 DVK

Suction-fed Problast 40 SL

Problast machines are mainly used for dust free blast cleaning of workpieces with a flat surface such as rollers. Another typical application is the edge cleaning and weld preparation such as the removal of primers on Plates and sections used in the shipbuilding industry. Problast machines can be ideally used as Power Packs to process hollow bodies such as cylinders, boilers and tubes. Problast machines are suitable for a all kinds of abrasive and sizes from 0.1 to 1.5 mm.
Cleaning of a weld