Compact Vibrating Sieve, Doebritz Industrial Sieving Machine, 25 t/h / ATEX Certified

Product Summary

Doebritz Compact Vibrating Sieve delivers high-capacity screening for dry bulk solids, powders, and pellets in the most demanding industrial environments. Rated up to 25 metric tons per hour, this machine features ATEX-certified explosion-proof design, IP65-rated vibratory motor, and a rugged stainless steel contact parts construction. Engineered for continuous operation in pneumatic conveying systems, silo receiving stations, and bag dumping applications. Achieve precise particle separation with minimal blinding and zero product contamination.

Why Source Doebritz Compact Vibrating Sieve

• Superior Screening Efficiency: High-frequency vibration pattern eliminates material bridging and accelerates throughput, reducing production bottlenecks.
• Minimal Maintenance & Downtime: Quick-release clamps and tool-free screen change design allow screen replacement in under 2 minutes, maximizing uptime for 24/7 plants.
• Industrial Compliance Ready: Each unit is ATEX II 2D certified for Zone 21&22 explosive dust atmospheres; also available with FDA-compliant seals for food-grade applications.
• Global OEM Supply Capabilities: Doebritz supports custom inlet/outlet flange patterns, sieve mesh sizes from 0.2 mm to 10 mm, and special surface finishes for global OEM integration.
• Heavy-Duty Construction: Vibro-cast housing and precision-balanced eccentric weights ensure vibration isolation and structural integrity exceeding 50,000 hours of continuous use.

Housing & Sieve Deck Engineering

The Doebritz Compact Vibrating Sieve is built around a fully welded 304 stainless steel housing with polished interior surfaces that eliminate material retention and facilitate rapid cleaning. The sieve deck frame is precision-stamped with a reinforced grid pattern to support fine meshes under heavy load. Our proprietary tensioning system maintains uniform mesh tightness across the entire screening area, reducing fatigue and increasing screen life by up to 40% compared to standard designs. Dual outboard eccentric vibratory motors generate a linear or circular oscillation pattern adjustable via movable weights, allowing fine-tuning for friable materials or fibrous products. All welds undergo dye-penetrant inspection to guarantee zero leaks in dust-tight or pressure-conveying systems.

Technical Specifications

All Doebritz Compact Vibrating Sieves are factory-tested to meet or exceed nameplate ratings. Custom configurations available upon request.

Specification	Detail
Contact Parts Material	304 Stainless Steel (316L optional)
Sieve Diameter	450 mm / 600 mm / 800 mm / 1000 mm
Mesh Size Range	0.05 mm to 10 mm (woven or perforated)
Max Capacity (powder)	25 t/h (dependent on bulk density & mesh)
Vibratory Motor Power	0.55 kW to 2.2 kW, 230/400V, 3Ph, 50/60Hz
ATEX Classification	II 2D Ex h IIIC T120°C Db (standard)
Ingress Protection	IP65 (motor), IP54 (cable entry)
Noise Level	< 78 dB(A) at 1 meter (unloaded)

Heavy-Duty Application Scenarios

Pneumatic Conveying Systems (Dilute & Dense Phase)

Installed directly below rotary airlock valves or as standalone sifters, the Compact Vibrating Sieve removes oversize contaminants and agglomerates from powders before they enter conveying lines, protecting downstream blowers and filters.

Silo Discharging & Batch Screening

Mounted on silo outlets, it ensures consistent particle size distribution for cement, lime, flour, resin pellets, and mineral powders. Available with quick-clean designs for recipe changeover.

Dust Filter Collectors & Recycling Loops

Used in dust collection systems to reclaim valuable product from captured dust, reducing waste and improving raw material yield by up to 15% in chemical and pharmaceutical plants.

Frequently Asked Questions

What is the standard delivery lead time for Doebritz Compact Vibrating Sieves?

Standard units (304 stainless steel, 0.5-5 t/h capacity) ship within 15 business days from order confirmation. Custom flange patterns or special mesh materials require 25 business days. Express assembly available for emergency replacements.

Can I get custom inlet/outlet flanges to match my existing pneumatic system?

Absolutely. Doebritz supports full OEM customization: we can machine flanges to DIN, ANSI, JIS, or your proprietary bolt-hole pattern. Provide a technical drawing and we will match precisely. No minimum order quantity for custom flanges.

Is the Compact Vibrating Sieve available with ATEX Zone 20 certification?

Yes. Our standard model is ATEX II 2D (Zone 21&22). For Zone 20 (continuous dust presence), we offer a specialized version with fully sealed vibratory motors, conductive gaskets, and grounding braids. Request the ‘-Z20’ option code when ordering.

What is the maximum operating temperature for this sieve?

The standard silicone rubber suspension mounts handle -20°C to +80°C. For high-temperature applications (up to 200°C), we offer a high-temp configuration with fiber-reinforced springs, Viton seals, and a remote bearing lubrication system. Suitable for hot calcined powders or recycled hot mix asphalt.

How often should the screen mesh be replaced, and can I buy spares directly?

Screen mesh life depends on abrasiveness. For silica sand (average use), expect 800-1200 operating hours. Doebritz stocks all mesh sizes from 0.05 mm up to 10 mm. We offer blanket purchase agreements for scheduled maintenance and emergency overnight spares shipping to major industrial regions.