Food Grade Vibration Sifter, Doebritz Industrial Sieving Machine, Stainless Steel 316L / ATEX Certified

Product Summary

Doebritz presents the advanced Food Grade Vibration Sifter, engineered for high-capacity scalping of powders (up to 25 t/h), granules, and flakes. Constructed from certified Stainless Steel 316L, featuring sanitary mirror polishing (Ra ≤ 0.4µm) and ATEX Zone 22 dust explosion protection. Designed specifically for pneumatic conveying, silo discharge, and quality assurance lines in food, dairy, and pharmaceutical sectors.

Why Source Doebritz Food Grade Vibration Sifter

• Superior Screening Efficiency: Patented gyratory vibration mechanism ensures 99.9% sieving accuracy with zero product degradation.
• Hygienic Compliance: Full FDA & EC 1935/2004 compliance. Quick-release clamps and tool-free screen change for rapid wash-down procedures.
• Explosion-Proof Integration: ATEX-certified (II 2D Ex tb IIIC Db) vibratory motor with anti-static mesh and grounding kit for volatile food dusts.
• Global OEM Supply Chain: Backed by ISO 9001:2025 certified production, laser-cut screens with CNC-punched apertures available from 0.1mm to 10mm.
• Reduced Downtime: Heavy-duty quick-latch clamps and interchangeable screen cassettes reduce maintenance to under 3 minutes.

Housing & Rotor Engineering

The Doebritz housing features a one-piece hydroformed 316L body with fully welded and polished internal seams to eliminate bacterial harborage. Unlike bolted designs, our seamless construction ensures true CIP (Clean-in-Place) readiness. The dynamic counterbalance system isolates vibration stress from support structures. The eccentric drive mechanism is fully enclosed within a IP69K-rated housing, preventing moisture ingress during high-pressure washdowns. Every unit undergoes 100% helium leak testing to guarantee zero contamination bypass.

Technical Specifications

Below are standard parameters for the Doebritz Food Grade Vibration Sifter. Non-standard flange drilling (ANSI, DIN, JIS) and customized inlet/outlet offsets are available for pneumatic system retrofits.

Specification	Detail
Body Material	Stainless Steel 316L (EN 1.4404)
Surface Finish	Mirror polish Ra ≤ 0.4μm inside/outside
Sieve Diameter	600 mm / 900 mm / 1200 mm / 1500 mm
Motor Power	0.75 kW to 3.0 kW, 4-pole, IP69K
Vibration Frequency	1440 RPM (fixed) / Optional VFD for 0-1800 RPM
Seal Material	Silicone (FDA) / Viton (FKM) for high temp
Certification	ATEX II 2D Ex tb IIIC Db, FDA, EC1935/2004
Max. Product Temp	-20°C to +120°C (Silicone) / -10°C to +200°C (Viton)
Leak Rate	< 0.01% across screen (helium tested)

Heavy-Duty Application Scenarios

Pneumatic Conveying Systems

Installed directly under dilute or dense phase conveyors, the Doebritz sifter removes foreign objects (metal, plastic chips, agglomerates) from flour, sugar, starch, and milk powder at up to 30 m/s air velocity without pressure drop spikes.

Silo Discharging & Blending Lines

Positioned at silo outlets for bulk ingredient receival. The low-profile design fits under existing hoppers with limited headroom. Pre-sieving ensures downstream rotary valves and mixers are protected from oversized contaminants.

Dust Filter Collectors (Product Recovery)

As a safety screener for recycled dust from baghouse filters. Recovers valuable product while rejecting tramp material. Direct flange connection to discharge airlocks eliminates product spillage.

Frequently Asked Questions

What is the standard lead time for a Doebritz Food Grade Vibration Sifter?

Standard sizes (600mm to 1500mm diameter) are shipped within 4 weeks from order confirmation. Expedited 2-week service is available for basic 304 stainless steel models.

Can you customize the inlet/outlet flange pattern for my existing system?

Absolutely. Doebritz offers any flange standard (ANSI 150#/300#, DIN PN10/16/25, JIS 10K). We also accept customer drawings for adapter rings. Minimum order quantity for custom flanges is just 2 units.

Does the sifter support ATEX Zone 21 or 22 dust environments?

Yes. All Doebritz sifters are ATEX certified for Zone 22 (II 3D) as standard. For Zone 21 applications, we provide additional grounded mesh upgrades and certified vibratory motors (II 2D). Request our ATEX datasheet for zone-specific configurations.

What is the maximum allowable operating temperature?

Standard silicone seals handle -20°C to +120°C. For hot sugar or fat powders, we offer Viton (FKM) seals up to 200°C and a cooling jacket option for the bearing housing up to 250°C.

Do you offer spare parts and screen mesh replacements globally?

Yes. Doebritz maintains a global spare parts network with warehouses in USA (Houston), EU (Rotterdam), and Asia (Shanghai). Pre-tensioned screen mesh cassettes in any aperture size ship within 48 hours.