Doebritz Mobile Vibration Sifter, Industrial Screening Feeder, 10-50 TPH / ATEX Zone 22

Product Summary

The Doebritz Mobile Vibration Sifter is a heavy-duty, self-contained screening solution engineered for continuous classification of bulk powders, granules, and friable materials. With a processing capacity ranging from 10 to 50 metric tons per hour (depending on mesh size and material density), this industrial vibratory screener integrates a robust low-profile drive deck, quick-release clamping system, and ATEX Zone 22 compliant construction for explosive dust environments. Designed specifically for pneumatic conveying intake protection, silo discharge quality control, and batch screening in food, chemical, and mineral processing industries.

Why Source Doebritz Mobile Vibration Sifter

• Heavy-Duty Vibratory Drive: Industrial-grade eccentric motor with adjustable amplitude (3-6 mm) ensures consistent material stratification and screen blinding reduction.
• ATEX Certified Explosion-Proof Configuration: Full option for Zone 22 dust environments, including anti-static screens and earthing continuity.
• Rapid Screen Changeover: Patented clamp-ring system reduces downtime to under 5 minutes without tools on all models.
• Global OEM & Aftermarket Support: Doebritz provides full technical documentation, spare parts availability for 10+ years, and on-site commissioning support worldwide.
• Wear-Resistant Contact Parts: Standard screens in 304 stainless steel; optional screens with 316L or polyurethane liners for abrasive materials.

Housing & Vibratory Deck Engineering

The Doebritz Mobile Vibration Sifter features a one-piece deep-drawn stainless steel screen housing (304 or 316L) with polished internal welds to eliminate material entrapment. The vibratory deck is mounted on four maintenance-free rubber buffers, providing linear oscillation without metal-to-metal contact. The eccentric weight system is fully enclosed and grease-lubricated for life, with IP66 motor protection. All models include a removable inlet hopper with flexible rubber skirt seal and two discharge spouts (overs and fines) with integrated slide gates. Mobility is ensured via heavy-duty locking casters and a push-pull handle, making the unit ideal for multi-point production lines.

Technical Specifications

Below are standard technical parameters for the Doebritz Mobile Vibration Sifter series. Custom configurations (special mesh sizes, food-grade polished surfaces, or explosion-proof motor enclosures) are available upon request for original equipment manufacturers (OEMs).

Specification	Detail
Model	DVB-1000M | DVB-1500M
Screen Diameter	1000 mm | 1500 mm
Mesh Range	0.5 – 12 mm (standard) | 0.5 – 12 mm
Motor Power	1.5 kW (2-pole) | 2.2 kW (2-pole)
Vibratory Frequency	1460 RPM | 1460 RPM
Amplitude (adjustable)	3 – 6 mm | 3 – 6 mm
Body Material	304 SS / Cast Iron | 304 SS / 316L optional
Capacity (powder, 100 µm)	~12 TPH | ~22 TPH
Capacity (pellet, 3 mm)	~35 TPH | ~50 TPH
Overall Weight	220 kg | 340 kg
Overall Dimensions (LxWxH)	1450x1100x1250 mm | 1950x1500x1450 mm
ATEX Option	Zone 22 (II 3D) | Zone 22 (II 3D)

Heavy-Duty Application Scenarios

Pneumatic Conveying Intake Protection

Installed upstream of rotary airlock valves or blowers, the Doebritz Mobile Vibration Sifter removes tramp particles and agglomerates from dilute or dense phase systems, preventing valve jamming and filter bag damage.

Silo Discharge Quality Screening

Mounted under silo cones or batch hoppers, the mobile sifter ensures final product consistency before bagging or blending operations. Change screens between batches without stopping upstream filling.

Dust Collector Product Recovery

Connected to filter receiver discharge, the sifter reclaims valuable fines from collected dust – typical in food, chemical and recycling plants, reducing raw material waste.

Frequently Asked Questions

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

For standard models (carbon steel or 304 stainless steel, 1.5 kW vibratory motor), Doebritz offers a lead time of 4-5 weeks after order confirmation. ATEX-certified or 316L special material units require 7-8 weeks. Rush delivery is available for partial shipments.

Can the screen mesh be customized for non-standard particle separation?

Yes. Doebritz supports full OEM customization of screen mesh size from 0.5 mm to 12 mm apertures, including SS316 woven wire, perforated plate, or polyurethane screens. Please provide your target particle size distribution curve and material abrasiveness index.

Is the Doebritz Mobile Vibration Sifter ATEX certified? Which zones?

Yes. Our standard explosion-protected configuration is certified for ATEX Zone 22 (dust) – II 3D Ex tc IIIC T120°C Dc. Units can also be built to IECEx or NEC 500 standards upon request. The certificate includes the vibratory motor, junction box, and anti-static screen gaskets.

What maximum operating temperature can the sifter handle?

Standard rubber buffers and motor are rated for -20°C to +60°C ambient. For hot materials (up to +150°C product temperature), we offer a high-temp version with silicone gaskets, upgraded bearing grease, and a thermal insulated motor mounting plate. Please confirm your process temperature before ordering.

Does Doebritz provide replacement screens and spare parts for existing machines?

Absolutely. As a manufacturer-owned aftermarket program (not a third-party reseller), Doebritz stocks replacement screens, rubber buffers, vibratory motors, and seal rings for all mobile sifter models manufactured since 2010. Standard wear parts ship within 48 hours from our regional hubs in Europe, North America, and Southeast Asia.