SUS304 Vibrating Sieve, Doebritz Screening Feeder, 1500mm Dia / High Flow Capacity

Product Summary

Engineered for maximum throughput and zero-compromise material purity, the Doebritz SUS304 Vibrating Sieve sets the new benchmark for high-volume separation of dry bulk solids. This heavy-duty screener delivers a screening capacity of up to 25 tons per hour for fine powders (down to 150 microns) and pellets, driven by a low-maintenance, high-efficiency vibratory motor. Manufactured from full SUS304 stainless steel, the unit is resistant to corrosion and suitable for food-grade, chemical, and mineral processing applications. Available with an optional ATEX-certified explosion-proof design for hazardous dust environments (Zone 22).

Why Source Doebritz SUS304 Vibrating Sieve

• Ultra-High Screening Efficiency: Patented circular vibration pattern ensures maximum stratification and fines recovery, reducing waste by up to 40% compared to standard linear screens.
• Superior Craftsmanship & Materials: 100% virgin SUS304 stainless steel housing and contact parts. Precision CNC-machined flanges guarantee a perfect seal with your pneumatic or gravity conveying system.
• Global OEM Supply Capability: Doebritz operates a 50,000 sqm ISO 9001:2025 certified facility. We offer complete customization of mesh size, inlet/outlet flanges (DIN/ANSI/JIS), and quick-release clamps for sanitary applications.
• Minimal Downtime & Lowest TCO: Tool-free mesh change system (under 3 minutes). The maintenance-free vibratory motor features a 50,000-hour bearing life, drastically reducing unscheduled stops.
• Hazardous Area Compliance: Full ATEX II 2D c T120°C certification ready. Our robust design prevents spark generation and mechanical friction in explosive dust atmospheres.

Housing & Rotor Engineering

The Doebritz SUS304 Vibrating Sieve is built around a monocoque stressed housing fabricated from 4mm to 6mm thick SUS304 plate, eliminating weld stress fractures common in folded designs. The housing features an integrated dust cover with a silicone gasket that provides an air leakage rate below 0.05 m³/h at 50 mbar, critical for vacuum conveying systems. The vibratory motor is mounted on a heavy-duty base plate with precision-balanced eccentric weights at both the top and bottom. This design generates a three-dimensional elliptical motion that transports material evenly across the entire screen surface while preventing blinding or pegging. All product-contact surfaces are polished to a Ra ≤ 0.8μm finish, preventing material adhesion and facilitating rapid cleaning for batch changeovers.

Technical Specifications

Every Doebritz SUS304 Vibrating Sieve is factory flow-tested on silica sand and fine limestone to guarantee performance. Standard specifications are listed below; custom configurations (including FDA-grade silicone seals and 316L stainless steel) are available for specific process requirements. Download our full engineering datasheet for detailed dimensional CAD drawings.

Specification	Detail
Sieve Diameter	1200 mm / 1500 mm (custom up to 2000 mm)
Contact Material	SUS304 Stainless Steel (316L optional)
Motor Power	2 x 1.5 kW (standard) / 2 x 3.0 kW (heavy-duty)
Screening Area	1.13 m² (1200mm) / 1.77 m² (1500mm)
Mesh Range	0.15 mm (100 mesh) to 25 mm (3/4 inch)
Max Feed Size	50 mm
Max Capacity (Powder)	Up to 25 t/h (depending on material bulk density)
Vibration Frequency	1440 RPM (50 Hz) / 1725 RPM (60 Hz)
Dynamic Force	Up to 25 kN
Air Leakage Rate	< 0.05 m³/h at 50 mbar
ATEX Option	II 2D Ex h T120°C (Zone 22) / II 2D T120°C (motor)

Heavy-Duty Application Scenarios

Pneumatic Conveying Systems (Dilute & Dense Phase)

Integrates seamlessly as a receiver sieve at the discharge of dilute or dense phase pneumatic conveyors. Removes oversize contaminants and agglomerates from flour, resin pellets, or plastic regrind before they reach storage silos or process equipment, preventing clogging of rotary valves and filters.

Silo Discharging & Safety Screening

Mounted directly under a silo or day bin, the Doebritz sieve acts as a final safety screener. Ideal for powder coating, cement additives, and fine chemicals. The low-profile design (total height < 500mm) fits into tight spaces between the silo discharge flange and the downstream rotary airlock or bag filler.

Dust Filter Collectors & Material Recovery

Used to screen and recycle valuable product collected by dust extraction systems (baghouses or cartridge collectors). Recovers fines from metal powders, ceramic slurries, or food dust, returning them to the production line and drastically reducing raw material waste.

Frequently Asked Questions

Q1: What is the typical lead time for a Doebritz SUS304 Vibrating Sieve?

A: For standard units (1200mm or 1500mm diameter, standard SUS304 mesh, non-ATEX), the current lead time is 15-20 working days for orders up to 5 units. For customized flanges, ATEX certification, or FDA seals, please add 10 working days. We offer express production (5 days) for a 20% premium.

Q2: Do you support non-standard flange drilling (e.g., ANSI 150#, JIS 10K)?

A: Absolutely. As an OEM supplier to global system integrators, we can machine inlet and outlet flanges to any international standard (DIN, ANSI, JIS, BS) or provide custom bolt hole patterns based on your drawing. A minor engineering fee applies for first-time custom patterns.

Q3: Is an ATEX-certified explosion-proof version available for Zone 21 dust environments?

A: Yes. The Doebritz SUS304 Vibrating Sieve can be supplied with a full ATEX II 2D Ex h T120°C certification (or IECEx equivalent). This includes a certified vibratory motor, anti-static silicone seals, and a grounding kit. We also provide full documentation for your hazardous area DSEAR assessment.

Q4: What high-temperature options do you offer?

A: The standard unit is rated for 80°C (product temperature). For hot materials (up to 220°C) such as catalyst powders or calcined minerals, we offer a high-temp variant with: (1) heat-treated springs, (2) high-temperature silicon or Viton seals, (3) a thermally isolated motor mount. Please contact our engineering team for a detailed assessment.

Q5: How do you guarantee mesh integrity and prevent product contamination?

A: Each screen mesh is 100% visually inspected under magnification and then corona-tested in our QA lab. We use a bonded sandwich construction (mesh + backing cloth) to prevent sagging. For pharma/food applications, we provide a signed Certificate of Conformity & Contamination Report and can perform passivation on all product-contact surfaces upon request.