High Flow 30‑50m³/h Rotary Drum Microfilter Auto‑Backwashing Manure Dewatering Machine for Pig Farm Waste Treatment

GT-3000 rotary drum microfilter separator is dual-stage solid-liquid separation equipment integrating rotary drum microfiltration and screw extrusion. The entire machine utilizes 304 stainless steel for the main body, drum screen, and extrusion screw, providing excellent corrosion resistance and long service life.

Sewage enters from the dual-direction feeding inlet, where the large-area integrated forming drum screen intercepts solid manure, pig hair, and residues. Internal screw blades convey solids to the extrusion zone for further dewatering. An optional top spray pump provides automatic backwashing to maintain screen cleanliness.

Finished solids are discharged via the spring anti-spray outlet, while filtered liquid flows out for subsequent treatment. This equipment is widely used in large-scale pig farms and biogas plants for manure harmless disposal and resource utilization.

• Full 304 Stainless Steel Construction: Main body, integrated drum screen, and extrusion screw all utilize 304 stainless steel for excellent corrosion resistance. Drum diameter: 700mm, screen length: 1952mm, filtration area: 5.24㎡
• Dual-Stage Separation: Combines microfiltration and screw extrusion. Internal coaxial screw blades convey materials; extrusion zone screw diameter: 180mm for further solid compression. Solid interception rate >90%, solid moisture: 45-60%, effluent solid content <2%
• Optional Automatic Back-Washing System: 750W spray pump installed on top continuously flushes screen surface to prevent blocking during long-term continuous operation
• Complete Safety Protection Control Cabinet: 304 stainless-steel electrical box with built-in overload, phase-loss, and thermal protection; frequency conversion for flow adjustment
• Spring Anti-Spray Discharge Outlet: Effectively prevents material splashing under low concentration conditions. Dual-direction feeding inlet (76mm diameter) for flexible pipeline connection
• Reliable Drive System: Cycloidal pin gear reducers for both drum and extrusion screw; energy-saving three-phase motors for stable heavy-load operation

• Drum Zone Screen: One-piece forming 304 stainless steel screen, Φ700mm, length 1952mm, filtration area 5.24㎡, built-in coaxial screw blade
• Extrusion Zone Screw: 304 wear-resistant stainless steel, 8mm thickness, screw diameter 180mm, pitch 150mm
• Extrusion Zone Screen: 304 stainless steel, inner diameter 180mm, length 600mm, 0.8mm slot gap, reinforced with 4 stainless steel ribs
• Control Cabinet: 304 stainless-steel housing with thermal, overload & phase-loss protection, frequency conversion flow regulation
• Discharge Port: Spring anti-spray structure with stainless steel hopper
• Feeding Inlet: Φ76mm, tee galvanized pipe for dual-direction feeding
• Back-Wash Device (Optional): 750W spray pump mounted on machine top
• Motor & Reducer: Extrusion host motor 4KW, drum motor 2.2KW; cycloidal pinwheel reducers

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