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Custom Industrial Fully Automatic Spiral Screw Sludge Dewatering Machine QXDL-131

Home / Product / Screw Press Sludge Dewatering Machine / Industrial Fully Automatic Spiral Screw Sludge Dewatering Machine QXDL-131
  • Industrial Fully Automatic Spiral Screw Sludge Dewatering Machine QXDL-131
  • Industrial Fully Automatic Spiral Screw Sludge Dewatering Machine QXDL-131
  • Industrial Fully Automatic Spiral Screw Sludge Dewatering Machine QXDL-131
  • Industrial Fully Automatic Spiral Screw Sludge Dewatering Machine QXDL-131

Industrial Fully Automatic Spiral Screw Sludge Dewatering Machine QXDL-131

Industrial Fully Automatic Spiral Screw Sludge Dewatering Machine is an efficient and energy-saving sludge dewatering equipment designed for sewage treatment plants, municipal engineering and industrial production. The equipment adopts spiral shaft technology to achieve efficient sludge compression and dehydration through low-speed rotation, effectively reducing the sludge moisture content. The fully automatic operation system can be unattended. The equipment has a compact design, small footprint, low noise during operation, and is suitable for a variety of scenarios. The environmentally friendly design reduces energy consumption and chemical use during sludge treatment. Our equipment is corrosion-resistant and made of high-strength materials.

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Product Introduction

The Industrial Fully Automatic Spiral Screw Sludge Dewatering Machine (Model QXDL-131) operates on a low-speed screw compaction principle, achieving continuous solid-liquid separation without high-speed centrifugal forces or belt filter press complexities. The system integrates a thickening section and a dewatering section within a single enclosed chamber. As the spiral shaft rotates, the volume between the moving and fixed rings gradually decreases, generating compression force that extracts moisture from sludge. This mechanism produces a stable dewatered cake with dry solids content ranging between 18 to 25 percent, depending on feed sludge characteristics. The automatic torque control adjusts operational speed based on real-time load, reducing energy use during low-feed periods.

0.36 kW Total Power Consumption
5-10 kg/h Dry Sludge Capacity
250 kg Machine Weight

Core Advantages

Low Energy Consumption

Total power consumption of 0.36 kW per operational hour. The low rotational speed (2-5 RPM) reduces electrical demand compared to centrifuge or belt press systems operating at 30-50 kW ranges.

Self-Cleaning Mechanism

The differential motion between the spiral shaft and laminating rings prevents clogging without requiring high-pressure backwash water pumps, reducing maintenance frequency and water usage.

Compact Footprint

Equipment dimensions of L1870mm × W730mm × H1170mm enable installation in existing facilities with limited floor space, eliminating the need for separate thickening tanks or polymer mixing units.

Enclosed Operation

Fully sealed dewatering chamber minimizes odor release and aerosol generation, reducing the need for additional fume extraction or chemical scrubbers in indoor installations.

Technical Specifications

Equipment Model QXDL-131 Third generation screw press series
Dry Sludge Treatment Capacity 5-10 Kg/h Based on 2-5 percent feed solid concentration
Equipment Dimensions (L×W×H) 1870 × 730 × 1170 mm Installation clearance required: +500mm on each side
Machine Weight 250 kg Operational weight: +120 kg when filled with sludge
Total Power Consumption 0.36 kW 220V / 380V, 50/60Hz compatible drive motor
Spiral Shaft Speed 2-5 RPM Variable frequency drive adjustable
Materials of Construction SS304 Optional SS316 for chloride-rich environments

Engineering Features

Mechanical Drive Assembly
  • Helical gear motor with integrated torque limiter for overload protection
  • Stainless steel spiral shaft with variable pitch design: 120mm at inlet, 45mm at discharge zone
  • Ceramic-coated laminating rings for extended wear resistance in abrasive sludge applications
Process Control Integration
  • Auto start-stop based on sludge level sensor feedback
  • Remote telemetry output (4-20 mA) for dewatered cake consistency monitoring
  • Fail-safe mode: machine stops with alarm when back-pressure exceeds 0.3 MPa
Hydraulic and Sealing System
  • Double lip mechanical seal on the drive shaft with grease lubrication port
  • Integrated drip tray and condensate drain for washdown applications
  • Quick-release inspection ports on four sides without full disassembly
Operational Interface
  • Touch panel display showing torque, rotation speed, and cumulative runtime
  • Modbus RTU communication protocol for SCADA integration
  • Manual override mode for calibration and troubleshooting cycles

Application Scenarios

Municipal Wastewater Digested sludge, primary sludge, and waste activated sludge (WAS) dewatering before landfill or incineration.
Food and Beverage Brewery yeast sludge, dairy processing residues, fruit and vegetable washwater solids.
Chemical and Pharmaceutical Metal hydroxide sludge, API production waste, and high-pH neutralization residues.
Pulp and Paper De-inking sludge, fiber recovery sludge, and lime mud thickening applications.
Livestock Farming Manure separation from anaerobic digester effluent, biogas plant digestate dewatering.
Textile and Dyeing Sludge generated from color removal and coagulation-flocculation processes.

Common Issues and Engineering Solutions

Observed Problem
Root Cause Analysis
Recommended Corrective Action
Throughput below 5 kg/h dry solids
Feed sludge concentration below 1.5 percent or polymer mixing ratio incorrect
Increase thickening time upstream; adjust polymer dosing to 3-5 kg per ton dry solids
Filtrate turbidity above 500 NTU
Ring stack gap opening too wide or ring wear beyond tolerance
Reduce back-pressure plate clearance by 0.3-0.5 mm; inspect rings for wear exceeding 0.2 mm
Excessive motor current fluctuation
Fibrous material winding around spiral shaft or uneven feed distribution
Install rotary drum screen (2 mm mesh) ahead of screw press; inspect shaft every 200 hours
Discharge cake moisture above 82 percent
Compression ratio insufficient due to incorrect end-cone position
Move back-pressure cone forward by 2-4 mm; verify torque within 65-75 percent of rated limit

Operational Precautions and Maintenance Protocol

Startup Sequence
  • Ensure all access panels are closed before energizing the main power supply.
  • Run the screw shaft dry for 30 seconds to verify rotation direction matches indicator arrow.
  • Introduce dilution water for 1 minute before feeding sludge to lubricate ring surfaces.
Shutdown Procedure
  • Stop sludge feed pump and allow the screw press to run for 8-10 minutes to discharge residual solids.
  • Flush with clean water (0.2 MPa minimum) for 3 minutes while spiral rotates at reduced speed.
  • Perform a final idle run for 2 minutes to dry internal components and prevent ring adhesion.
Weekly Inspection Checklist
  • Measure spiral shaft end clearance: acceptable range 0.8 mm to 1.5 mm.
  • Check grease level in mechanical seal housing; refill with lithium-based NLGI grade 2.
  • Verify torque limiter setting: slip torque calibrated to 110 percent of nominal motor torque.
Environmental and Safety Notes
  • Operate only with proper electrical grounding (ground resistance below 10 ohms).
  • Do not process sludge containing explosive solvents or free oil above 5 percent volume.
  • Install adequate ventilation if hydrogen sulfide concentration exceeds 10 ppm in incoming sludge.

Equipment Model

 QXDL-131

Dry Sludge Treatment Capacity

 5-10 Kg/h

Equipment Dimensions

 L1870mm × W730mm × H1170mm

Machine Weight

 250kg

Total Power Consumption

 0.36 kW
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Yangzhou Qinxin Environmental Protection Technology Co., Ltd.

  • 14000+

    Factory Area

  • 18+

    Honorary Certificate

Yangzhou Qinxin Environmental Protection Technology Co., Ltd. is China Custom Industrial Fully Automatic Spiral Screw Sludge Dewatering Machine QXDL-131 Suppliers and Industrial Fully Automatic Spiral Screw Sludge Dewatering Machine QXDL-131 Company. This is an enterprise that combines industry and trade and is committed to research and development, production, and sales of environmental protection equipment, Our company is mainly engaged in Industrial Fully Automatic Spiral Screw Sludge Dewatering Machine QXDL-131, stacked screw sludge dewatering machines, PAM integrated dosing devices, sludge low-temperature drying systems, solid-liquid separators, other sewage treatment equipment, mainly serving municipal, food, petrochemical, aquaculture, papermaking, leather, brewing, printing and dyeing, chemical, pharmaceutical, medical and other industries. Adhering to many years of practical experience and research and development in the production of environmental protection equipment, the company is AAA-level contract-oriented and trustworthy and has obtained a number of patents and quality management system certifications, environmental management system certifications, and occupational health and safety management system certifications.

HONOR & CERTIFICATE

Our products have obtained, include EC-Type Examination Certificate, BV, MODE, DNV, GL Certificate, EC Attestation of Conformity, Certificate of Type Approval for Marine Product and Lloyd’s Register Quality Assurance.

  • Environmental Management System Certificate
  • Environmental Management System Certificate
  • Quality Management System Certificate
  • Quality Management System Certificate
  • Occupational Health & Safety Management System Certificate
  • Occupational Health & Safety Management System Certificate
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