Blow-through rotary valve DBS series

for pneumatic conveyingfor bulk materialsfor food

Dosing rotary valve for continous feed into pressure - or vaccum conveying pipelines. • Space-saving, less installation height due to built-in conveying air connections in the housing • Large capacity range • High operational safety due to sturdy design and cleaning effect by blowing out the rotor chambers • Cost-effective owing to low installation investment • Low maintenance due to simple assembly • Less leakage air The task is to discharge and meter from a hopper into a pneumatic conveying system. Minimised leakage air flow from the pneumatic conveying system into the storage container is one of the important requirements for pressure conveying. The solids blow through rotary valve type DBS is a space-saving and cost-effective feeding instrument for pneumatic conveying. Similar to normal rotary valves, bulk solids fall into the inlet of the rotor chambers, and are then transported downwards when the rotor revolves. The product however does not fall freely through an outlet opening, but is blown out horizontally through the integrated conveying pipe connection using conveying air in the vacuum or pressure operation. Since the conveying pipeline almost passes through the rotary valve, the installation height is saved and the chambers are emptied effectively. Blow through rotary valves are manufactured with small tolerances between the rotor and the housing to avoid the adverse effects of conveying air flowing in the opposite direction to that of the mass flow. Leakage air is dissipated through a lateral opening in the housing, and fed back to, e.g. a storage silo. Special leakage air collectors, if required with a granulate inlet, are also used for the same purpose.