304 Stainless Steel Rotary Drum Micro Filter Solid Liquid Separator with Double Screw Extrusion for Pig Manure Treatment

The GT-3500 rotary drum micro filter separator adopts an upgraded double screw extrusion design, integrating rotary drum microfiltration with dual-screw dewatering. All material contact parts are made of 304 stainless steel for corrosion resistance and long service life.

Wastewater enters through the dual-direction feeding inlet. The integrated drum screen intercepts solid manure and pig hair, while dual coaxial screw blades convey solids to the extrusion zone for deeper dewatering. An optional top spray pump provides automatic backwashing to keep the screen clean.

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

• 304 stainless steel wetted parts: All parts touching raw materials adopt 304 stainless steel. Drum diameter 700 mm, screen length 1952 mm, 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 180 mm, pitch 150 mm, 8 mm thick plate. Higher load capacity compared with single screw models.
• High separation performance: Solid interception rate >90%, solid moisture after dewatering 45–60%, effluent solid content <2%.
• Optional automatic backwashing system: 750 W spray pump mounted on top to continuously flush the screen and avoid clogging.
• Complete safety control cabinet: 304 stainless steel electrical box with thermal, overload and phase-loss protection, plus frequency conversion flow adjustment.
• Spring anti-spray discharge port: Effectively prevents material splashing under low concentration conditions. Φ76 mm tee feeding pipe supports dual-direction feeding.
• Stable driving system: 2 sets of 4 KW extrusion motors and a 2.2 KW drum motor. Cycloidal pin gear reducers for extrusion, RV90-63 reducer for the drum.

• Drum Screen: One-piece formed 304 stainless steel, Φ700 mm, length 1952 mm, filtration area 5.24 ㎡, built-in coaxial screw blade.
• Extrusion Screw: 2 sets of 304 wear-resistant stainless steel screws, thickness 8 mm, diameter 180 mm, pitch 150 mm.
• Extrusion Screen: 304 stainless steel, inner diameter 180 mm, length 600 mm, slot gap 0.8 mm, reinforced by 4 stainless steel ribs.
• Control Cabinet: 304SS housing with thermal, overload and phase-loss protection, plus frequency conversion regulation.
• Discharge Port: Spring anti-spray structure with stainless steel hopper.
• Feeding Inlet: Φ76 mm tee galvanized pipe for dual-direction feeding.
• Backwash Device (Optional): 750 W spray pump installed on the machine top.
• Motor & Reducer: 2 × 4 KW extrusion host motors, 2.2 KW drum motor. Cycloidal pinwheel reducers for extrusion, RV90-63 reducer for the drum.
• Supporting Accessories: 3 KW submersible cutting pump (head 15 m, flow 40 m³/h, caliber 76 mm), 12 m steel wire feeding hose.

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

Pig manure, livestock manure, biogas slurry, and farm organic wastewater.