304 Stainless Steel Rotary Drum Micro Filter with Automatic Backwashing and Dual-Screw Dewatering for Farm Wastewater Treatment

The GT-3500 rotary drum micro filter separator features an upgraded double screw extrusion design, combining rotary drum microfiltration with dual-screw dewatering. All material contact components are constructed from 304 stainless steel for superior corrosion resistance and extended service life.

Wastewater enters through a dual-direction feeding inlet, where the integrated drum screen intercepts solid manure and pig hair. Dual coaxial screw blades convey solids to the extrusion zone for enhanced dewatering. An optional top spray pump provides automatic backwashing to maintain screen cleanliness.

Solid materials are discharged via a spring anti-spray outlet, while filtered liquid flows out for subsequent treatment. This system is widely applied in large-scale pig farms and biogas plants for manure harmless treatment and resource recycling.

• 304 stainless steel wetted parts: All components contacting raw materials use 304 stainless steel. Drum diameter 700mm, screen length 1952mm, filtration area 5.24㎡, with built-in coaxial screw blades.
• Upgraded double screw extrusion system: 2 sets of wear-resistant 304 extrusion screws. Screw diameter 180mm, pitch 150mm, 8mm thick plate. Higher load capacity compared to single screw models.
• High separation performance: Solid interception rate >90%, solid moisture after dewatering 45-60%, effluent solid content <2%.
• Optional automatic backwashing system: 750W spray pump mounted on top continuously flushes screen to prevent clogging.
• Complete safety control cabinet: 304 stainless steel electrical box with thermal, overload and phase-loss protection, frequency conversion flow adjustment.
• Spring anti-spray discharge port: Effectively prevents material splashing under low concentration conditions. Φ76mm tee feeding pipe supports dual-direction feeding.
• Stable driving system: 2 sets of 4KW extrusion motors, 2.2KW drum motor. Cycloidal pin gear reducers for extrusion, RV90-63 reducer for drum.

• Drum Screen: One-piece forming 304 stainless steel, Φ700mm, length 1952mm, filtration area 5.24㎡, built-in coaxial screw blade.
• Extrusion Screw: 2 sets of 304 wear-resistant stainless steel screws, thickness 8mm, diameter 180mm, pitch 150mm.
• Extrusion Screen: 304 stainless steel, inner diameter 180mm, length 600mm, slot gap 0.8mm, reinforced by 4 stainless steel ribs.
• Control Cabinet: 304SS housing, thermal, overload & phase-loss protection, frequency conversion regulation.
• Discharge Port: Spring anti-spray structure with stainless steel hopper.
• Feeding Inlet: Φ76mm, tee galvanized pipe for dual-direction feeding.
• Backwash Device (Optional): 750W spray pump installed on machine top.
• Motor & Reducer: 2×4KW extrusion host motor, 2.2KW drum motor. Cycloidal pinwheel reducers for extrusion, RV90-63 reducer for drum.
• Supporting Accessories: 3KW submersible cutting pump (head 15m, flow 40m³/h, caliber 76mm), 12m steel wire feeding hose.

Application Scenarios: Large-scale pig farms, livestock breeding plants, biogas plants, farm wastewater treatment projects, organic fertilizer raw material pretreatment stations.

Applicable Raw Materials: Pig manure, livestock manure, biogas slurry, farm organic wastewater.