Doebritz Baking Products Airlock Feeder – Official Technical Overview & Datasheet

DOEBRITZ BAKING PRODUCTS AIRLOCK FEEDER
OFFICIAL TECHNICAL OVERVIEW & DATASHEET

EXECUTIVE SUMMARY

The Doebritz Baking Products Airlock Feeder (Model Series DBR-1237) is a precision-engineered quick-release rotary valve specifically configured for hygienic powder and bulk handling in baking ingredient applications. This equipment integrates rapid disassembly architecture, precision airlock sealing (0.1–0.2 mm rotor-to-housing clearance), and full CIP/WIP compatibility to serve flour, starch, milk powder, protein powder, whey powder, whole/skim milk powder, soy protein powder, sugar, salt, baking premixes, and compound seasonings. The platform supports gravity discharge, pneumatic conveying (positive pressure up to 1 bar, negative pressure down to -1 bar), and automated batch/recipe metering via PLC and VFD control.

HOUSING & ROTOR METALLURGY

Base materials: SUS304 (AISI 304) and SUS316L (AISI 316L) stainless steel as standard, with carbon steel painted or carbon steel nickel-plated available for non-food applications. For abrasive or corrosive baking ingredients (e.g., salt, acidic premixes), contact surfaces can be coated with tungsten carbide, ceramic, PE, PTFE, PA, or high-molecular-weight polymer. Internal surface finishes: mirror polish, Ra ≤0.4 μm, Ra ≤0.8 μm, or Ra ≤1.6 μm. External finishes: machined surface <0.8 μm, sandblasting, shot blasting, or anti-fingerprint treatment. KEY FEATURES - Quick-release disassembly: No special tools required; supports manual cleaning after disassembly, online CIP cleaning, and online WIP cleaning with manual inspection. - Precision airlock sealing: Rotor-to-housing clearance 0.1–0.2 mm; lip seal air-tight shaft sealing; reduced air leakage for stable pneumatic conveying and accurate metering. - Hygienic compliance: Compatible with Class W, Class 10W, Class 30W, Class C, and Class D cleanrooms; meets GMP requirements for baking ingredient lines. - Variable frequency drive ready: PLC-controlled, automated batching, batch metering, recipe metering, adjustable material flow rate, no leakage, no powder leakage. - Ambient temperature range: -15°C to 60°C; material temperature range: 0°C to 120°C; optional water cooling jacket available. COMPLIANCE & SAFETY STANDARDS - Explosion protection: ATEX Zone 20, Zone 21, Zone 22 compliant. Flameproof/explosion-proof configuration pressure rating 16 bar. - Certifications: CE certified, TÜV certified, Statement certification. - Flange standard: HG20592 (DN50, DN100, DN150, DN200, DN300, DN350). TECHNICAL SPECIFICATIONS All values derived strictly from Doebritz DBR-1237 product documentation. Positive pressure pneumatic conveying: Low-pressure <0.4 bar; High-pressure 0.4–1 bar (VFD speed control). Negative pressure pneumatic conveying: Low-pressure >-0.4 bar; High-pressure -1 bar to -0.4 bar (VFD speed control).
Gravity discharge: Adjustable speed, no leakage, no powder leakage, flow rate adjustable.
Metering control: VFD adjustment, PLC control, batch metering, recipe metering, automated batching.
Shaft seal: Lip seal air-tight seal (pneumatic sealing).
Structure: Quick-release type / non-quick-release type; hygienic type / non-hygienic type.

INDUSTRIAL DEPLOYMENT

The Doebritz Baking Products Airlock Feeder is deployed in flour milling, dry baking mix production, premix batching systems, protein powder blending, dairy powder handling, and salt/seasoning conveying lines. Typical integration points: under silos for gravity discharge, inlet/outlet of pneumatic conveying systems (dilute phase or dense phase), and metering feeders for automated recipe batching. The quick-release design supports rapid changeover between different baking ingredients (e.g., flour to sugar to milk powder) without cross-contamination.