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Custom Eco-friendly Automatic Dewatering Spiral Screw Sludge Dewatering Machine QXDL-303

Home / Product / Screw Press Sludge Dewatering Machine / Eco-friendly Automatic Dewatering Spiral Screw Sludge Dewatering Machine QXDL-303
  • Eco-friendly Automatic Dewatering Spiral Screw Sludge Dewatering Machine QXDL-303
  • Eco-friendly Automatic Dewatering Spiral Screw Sludge Dewatering Machine QXDL-303
  • Eco-friendly Automatic Dewatering Spiral Screw Sludge Dewatering Machine QXDL-303
  • Eco-friendly Automatic Dewatering Spiral Screw Sludge Dewatering Machine QXDL-303

Eco-friendly Automatic Dewatering Spiral Screw Sludge Dewatering Machine QXDL-303

The environmentally friendly automatic dewatering screw press sludge dewatering machine adopts screw pressing technology to apply continuous pressure to the sludge through the rotation of the screw shaft, so that the water is separated from the sludge and the dry sludge is finally discharged.
Product features:
Efficient dewatering: The spiral design can gradually increase the pressure to achieve efficient dewatering and significantly reduce the moisture content of the sludge.
Low energy consumption: The running speed is low and the energy consumption is only 1/8 to 1/20 of that of traditional equipment.
Environmental protection and energy saving: No additional high-pressure cleaning water is required to reduce secondary pollution.
High degree of automation: Supports fully automatic operation and reduces manual intervention.
Strong durability: Made of high-quality materials, it has a long service life.
Wide range of applications: Suitable for municipal sewage treatment, food processing, papermaking, pharmaceuticals and other industries.

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QXDL-303 Eco-friendly Automatic Dewatering
Spiral Screw Sludge Dewatering Machine
Eco-friendly Automatic Dewatering Spiral Screw Sludge Dewatering Machine
90-180 kg/h Dry Sludge Capacity
3.0 kW Total Power
1700 kg Machine Weight
3700 mm Overall Length
1650 mm Width

The Eco-friendly Automatic Dewatering Spiral Screw Sludge Dewatering Machine QXDL-303 is engineered for high-capacity continuous dewatering applications. This system incorporates a high-torque spiral shaft with an extended compression zone, enabling processing of sludge with solids concentrations ranging from 0.5 to 5 percent. The design features an advanced ring stack configuration with enhanced self-cleaning properties, allowing sustained operation without manual intervention. The integrated torque-based control system automatically adjusts screw speed and back-pressure to maintain optimal cake dryness across varying feed conditions. With a processing capacity of 90-180 kg/h dry solids, this unit is suitable for medium to large municipal treatment plants and industrial facilities requiring reliable dewatering performance.

01
Extended Compression Zone
Lengthwise compression zone of 2200mm with progressive pitch reduction from 150mm to 55mm, generating pressure up to 0.8 MPa for optimal cake dryness of 22-30 percent DS.
02
High-Torque Drive Assembly
Heavy-duty helical gear motor delivering 3 kW power with integrated torque limiter. VFD-enabled speed control from 1.5 to 5 RPM for precise process adjustment.
03
Advanced Self-Cleaning Rings
Proprietary moving ring design with optimized clearance profile minimizes clogging and reduces maintenance intervals by 40 percent compared to conventional designs.
04
Automatic Back-pressure Regulation
Pneumatically controlled discharge cone with position feedback maintains consistent compression force. Adjustable pressure range of 0.3-0.8 MPa.
05
Integrated Washdown System
Built-in spray bar assembly with programmable cleaning cycles reduces manual cleaning frequency and ensures consistent filtration performance.
06
SCADA-Ready Controls
Modbus RTU communication protocol enables remote monitoring of torque, speed, and cumulative runtime. Alarm outputs for fault detection.
Technical Specifications
Equipment ModelQXDL-303
Dry Sludge Capacity90-180 kg/h
Dimensions (L×W×H)3700 × 1650 × 1700 mm
Machine Weight1700 kg
Total Power Consumption3.0 kW
Screw Speed Range1.5-5 RPM (VFD)
Max Operating Pressure0.8 MPa
Materials of ConstructionSS304 / SS316L
Drive TypeHelical gear motor with torque limiter
Control InterfaceTouch panel with Modbus RTU
Application Fields
Municipal wastewater sludge Food processing waste Brewery and distillery effluent Pharmaceutical residues Chemical industry sludge Pulp and paper mill Biogas digestate Textile wastewater
Process Flow Sequence
A
Feed Reception
Sludge enters through 150mm flanged inlet with optional polymer injection port
⬇
B
Gravity Dewatering
Free drainage through ring gaps, solids concentration increases from 0.5-2% to 5-8%
⬇
C
Progressive Compression
Multi-stage pressure increase from 0.2 to 0.8 MPa over 2200mm compression zone
⬇
D
Cake Extrusion
Dewatered cake (22-30% DS) exits through pneumatically controlled cone
⬇
E
Filtrate Collection
Separated liquid collected in lower pan for return to treatment headworks
Operational Troubleshooting
Insufficient cake dryness below 20% DS
Increase back-pressure cone pneumatic pressure by 0.1-0.2 MPa. Verify feed sludge concentration exceeds 1.5 percent. Check polymer dosing rate and mixing efficiency. Inspect ring stack for wear and replace segments with clearance exceeding 0.4mm.
Motor overload or tripping
Reduce feed rate temporarily using VFD speed adjustment. Inspect for foreign objects in ring stack. Verify torque limiter calibration. Check drive chain tension and gearbox lubrication level.
Inconsistent discharge rate
Verify feed pump consistency and check for bridging at inlet. Inspect back-pressure cone for proper operation. Clean spray nozzles and verify washdown system pressure. Calibrate torque sensor.
Excessive filtrate turbidity
Check ring gap clearance and replace worn segments. Reduce back-pressure temporarily to allow self-cleaning cycle. Verify polymer mixing and flocculation efficiency.
Frequently Asked Questions
What is the expected capacity range for the QXDL-303 under typical operating conditions?
The QXDL-303 consistently processes 90-180 kg/h of dry solids when fed with sludge containing 1.5-4 percent solids concentration. Higher feed concentrations (4-5 percent) allow operation at the upper range of capacity, while lower concentrations (0.5-1.5 percent) require reduced throughput to achieve optimal cake dryness. The VFD-driven screw speed can be adjusted to match specific feed characteristics.
How does the automatic back-pressure regulation system function?
The pneumatically controlled discharge cone incorporates a position feedback sensor that communicates with the main control panel. As the torque on the screw increases, indicating higher sludge density, the controller automatically adjusts the cone position to maintain consistent compression. This system eliminates manual adjustment and ensures stable cake dryness even as feed conditions fluctuate throughout the day.
What maintenance schedule is recommended for the ring stack assembly?
Ring stack inspection should be performed every 2,000 operating hours. Individual ring segments that show wear beyond 0.4mm clearance should be replaced. Under normal operating conditions with non-abrasive sludge, the ring stack typically provides 15,000-18,000 hours of service life. Replacement of the complete ring set is recommended when more than 30 percent of the rings exceed wear limits.
Yangzhou Qinxin Environmental Protection Technology Co., Ltd.
Industry and trade integration · AAA contract-oriented · ISO 9001/14001/45001 · Global export to Southeast Asia

Equipment Model

 QXDL-303

Dry Sludge Treatment Capacity

90-180 Kg/h

Equipment Dimensions

 L3700mm × W1650mm × H1700mm

Machine Weight

 1700kg

Total Power Consumption

3 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 Eco-friendly Automatic Dewatering Spiral Screw Sludge Dewatering Machine QXDL-303 Suppliers and Eco-friendly Automatic Dewatering Spiral Screw Sludge Dewatering Machine QXDL-303 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 Eco-friendly Automatic Dewatering Spiral Screw Sludge Dewatering Machine QXDL-303, 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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