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The Doebritz Drawer-Type Rotary Valve is an advanced material handling component engineered for screw conveyor inlets. It functions as a precise volumetric feeder and reliable rotary airlock, ensuring consistent material flow and absolute gas sealing in demanding powder conveying systems.
Direct powder dumping into screw conveyors often causes motor overloads and material packing. This specialized extractable rotary valve provides metered, controlled feeding and is widely deployed above screw conveyors, ribbon blenders, and weighing hoppers in chemical, food processing, and mineral industries.
Uncontrolled powder surges can instantly jam screw conveyors. Our precision-machined rotor pockets provide exact volumetric displacement, acting as a metering device that guarantees exceptionally uniform and stable conveying, preventing downstream equipment overloads.
The innovative slide-out drawer structure allows operators to swiftly pull the internal rotor assembly out along built-in heavy-duty guide rails. This enables rapid, thorough washdowns without unbolting the heavy valve from the conveyor inlet.
Manufactured entirely from premium stainless steel (SUS304/SUS316L), the structural integrity resists abrasive wear, prevents material contamination, and ensures prolonged operational lifespan.
Our equipment is backed by verified engineering parameters for stable operations under continuous industrial stress:
| Specification | Details |
|---|---|
| Material | Stainless Steel (SUS304 / SUS316L) |
| Working Pressure | -0.5 to 2 bar |
| Working Temperature | -10 to 150°C |
| Max Capacity | Up to 634 L/min |
| Integration | Optimized for Screw Conveyor Inlets |
| Structure Design | Quick Dismounting (Drawer-Type Extractable) |
Integrating this Doebritz rotary valve provides immediate, tangible value to your processing plant. It actively eliminates screw conveyor jamming and motor overloads, drastically improves conveying stability, and significantly lowers maintenance downtime and labor via its highly accessible drawer-type design.
A rotary valve acts as a volumetric meter. It feeds powder into the screw conveyor at a controlled, consistent rate. This prevents the screw from being flooded with material, which causes motor overloads, packing, and equipment failure.
Absolutely. Despite the extractable functionality, the tight internal clearances act as a highly reliable airlock specifically suited for both vacuum suction and positive pressure pneumatic conveying (-0.5 to 2 bar).
Extremely easy. The "Quick Dismounting" guide rails support the heavy rotor, allowing a single operator to safely slide it out, wash it, and slide it back in minutes, completely avoiding the need to dismantle the connection to the screw conveyor.
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