Rotary Vibrating Sieve, Doebritz Rotary Sifter, 1500kg/h Capacity / ATEX Certified

Product Summary

Doebritz Rotary Vibrating Sieve (Model RS-VX Series) is a high-throughput industrial screener engineered for removing oversized contaminants and classifying dry bulk powders, granules, and flakes. With a screening area up to 1.5 m² and throughput capacity reaching 1,500 kg/h for fine powders (100 mesh), this unit delivers dual-action rotary vibration for accurate separation. Available in 304/316L stainless steel contact parts, IP66 motor protection, and ATEX-certified configuration for explosive dust environments (Zone 21/22). Direct OEM supply from Doebritz’ ISO 9001:2025 facility.

Why Source Doebritz Rotary Vibrating Sieve

Industrial buyers choose Doebritz for unmatched screening accuracy, rugged construction, and global logistics. Here’s why our rotary vibrating sieve outperforms standard separators:

• Superior Screening Efficiency: Patented eccentric weight assembly generates controlled 3D vibration, preventing mesh blinding and reducing carryover by up to 40% compared to conventional rotary sieves.
• Heavy-Duty Hygienic Design: All contact parts are mirror-polished SS316L (Ra ≤ 0.4µm), crevice-free, and fully welded – ideal for food/pharma or abrasive chemical powders.
• ATEX & Explosion-Proof Readiness: Full ATEX II 2D c T6 certification as standard option, with anti-static sealing and earthing kit for explosive atmospheres (e.g., aluminium, sulphur, organic pigments).
• Global OEM Supply Chain: Doebritz provides complete technical documentation, 3D CAD models, and fast 15-working-day delivery for non-stock units. Full spare parts support for 15+ years.
• Low Maintenance & Long Life: Outboard bearings with labyrinth seals, quick-release clamps, and tool-free screen change reduce downtime by 60%.

Housing & Rotor Engineering

The Doebritz Rotary Vibrating Sieve features a one-piece cast 356 aluminum alloy or electro-polished SS316L housing – reinforced with internal stiffening ribs to withstand high g-force vibration up to 5G. The dynamic rotary imbalance system includes upper and lower eccentric weights adjustable to create linear, circular, or elliptical screening patterns. A heavy-duty SKF bearing assembly with double lip seals and grease lubrication ensures >20,000 hours operation under full load. The quick-lift screen frame uses a compression ring and FDA silicone gasket to achieve sealing without tools. For ultra-fine powders (<20μm), an optional ultrasonic mesh cleaning system prevents clogging.

Technical Specifications

Below are the standard ratings for the Doebritz Rotary Vibrating Sieve RS-VX Series. All parameters are factory-tested per ISO 4869-2. Custom configurations (inlet/outlet flange types, special coatings, high-temp versions up to 220°C) available upon request.

Specification	Detail
Model	RS-VX-1000 / RS-VX-1500
Screening Diameter	1000 mm (39.4″) / 1500 mm (59″)
Power Rating	1.5 kW / 2.2 kW, 380-415V 3ph, 50/60Hz
Material Contact Parts	SS316L (Ra ≤0.4μm) / SS304 optional
Mesh Size Range	2 mesh to 500 mesh (0.025mm opening)
Max Throughput (Powder)	Up to 1500 kg/h (100 mesh flour)
Vibration Frequency	1440 rpm (adjustable via inverter option)
ATEX Certification	II 2D c T6 (standard) / II 1D on request
Ingress Protection	IP66 (dust-tight, high-pressure washdown)
Net Weight	215 kg (aluminum) / 410 kg (SS316L)

Heavy-Duty Application Scenarios

Pneumatic Conveying Systems

Integrate seamlessly between dilute or dense phase pneumatic conveyors – the Doebritz sieve removes agglomerates and tramp material from cement, fly ash, lime powder, and plastic pellets at line pressures up to 2.5 bar(g). Available with pressure shock-resistant housing and rotary airlock inlet.

Silo Discharging & Classifying

For silo safety and product quality, mount directly under storage silos or hoppers. The vibrating sieve classifies flour, starch, resin powders, and coffee granules into 2-3 fractions (overs, product, fines). Explosion isolation flap optional for ATEX silos.

Dust Filter Collectors

Doebritz sieves serve as final product garbling before bagging or big bag filling stations – removing fibers, clumps, and foreign objects from recovered dust collector fines, ensuring recycled material meets spec. Anti-static version for dust collector outfeed.

Frequently Asked Questions

Q1: What is the lead time for a custom flange configuration on the Doebritz Rotary Vibrating Sieve?

A: For non-standard flange drilling patterns (e.g., DIN, JIS, or ASME), we offer 12-15 working days after drawing approval. Standard ANSI 150# flanges ship within 5-7 working days from our EU/Asia hubs.

Q2: Can the sieve be ATEX certified for dust Zone 20 (continuous presence)?

A: Yes, Doebritz provides ATEX II 1D T6 certification (Category 1D) for Zone 20, including all metal parts to avoid ignition sources and a dedicated grounding kit. Additional documentation and notified body involvement add 10 working days.

Q3: What’s the maximum operating temperature for the standard seal?

A: Standard FDA silicone seals handle -30°C to +120°C. For high-temperature screening (e.g., hot recovered carbon black or foundry sand), we offer Viton® seals (up to +200°C) or PTFE encapsulated (up to +260°C). Please specify when ordering.

Q4: Does Doebritz provide warranties and global service support?

A: Every Doebritz Rotary Vibrating Sieve includes a 24-month warranty (excluding screens and seals). We stock 90% of spare parts in USA, Germany, and Singapore. Remote diagnostic support via video call and field service available in 45+ countries.

Q5: How do I choose between SS304 and SS316L for my chemical application?

A: For general use and food processing, SS304 is cost-effective. For corrosive chemicals, salt spray, acidic powders (e.g., ammonium sulphate), or pharmaceutical applications, choose SS316L – it provides superior pitting resistance (PREN ≥ 28). Doebritz can also apply Halar® or epoxy coating for extreme corrosion.