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Custom Integrated Horizontal Food Grade Spiral Screw Sludge Dewatering Machine QXDL-252

Home / Product / Screw Press Sludge Dewatering Machine / Integrated Horizontal Food Grade Spiral Screw Sludge Dewatering Machine QXDL-252
  • Integrated Horizontal Food Grade Spiral Screw Sludge Dewatering Machine QXDL-252
  • Integrated Horizontal Food Grade Spiral Screw Sludge Dewatering Machine QXDL-252
  • Integrated Horizontal Food Grade Spiral Screw Sludge Dewatering Machine QXDL-252
  • Integrated Horizontal Food Grade Spiral Screw Sludge Dewatering Machine QXDL-252

Integrated Horizontal Food Grade Spiral Screw Sludge Dewatering Machine QXDL-252

The integrated horizontal food grade spiral sludge dewatering machine is made of food grade stainless steel and meets strict hygiene and safety standards. It is suitable for food processing, beverage, pharmaceutical and other industries. The core principle is to achieve efficient removal of water from sludge by means of spiral conveying and squeezing. The equipment runs smoothly and can effectively reduce the volume of sludge. This dewatering machine has the characteristics of high degree of automation, simple operation and convenient maintenance. Through integrated design, it saves space and reduces the risk of connection and leakage between equipment.

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QXDL-252 SERIES
Integrated Horizontal Food Grade
Spiral Screw Sludge Dewatering Machine
30-60
kg/h
Dry Sludge Capacity
1.47
kW
Total Power
800
kg
Machine Weight
2810
mm
Overall Length

Horizontal Screw Press Principle

The Integrated Horizontal Food Grade Spiral Screw Sludge Dewatering Machine employs a horizontally oriented spiral shaft with progressively decreasing pitch from the feed zone to the discharge end. Sludge enters through the top inlet, where gravity drainage occurs through the stationary ring gaps. As material travels horizontally toward the outlet, the reduced pitch volume generates mechanical compression up to 0.7 MPa. The differential motion between moving rings (driven by spiral friction) and fixed rings provides continuous self-cleaning, eliminating filter cloth blinding. This horizontal configuration allows for lower installation height and easier integration into existing food processing lines with limited vertical clearance.

Technical Data Sheet

Equipment ModelQXDL-252
Dry Solids Throughput30-60 kg/h
Dimensions (L×W×H)2810 × 1120 × 1600 mm
Unit Weight (empty)800 kg
Installed Power1.47 kW
Screw Speed Range2-5 RPM
Max Back-pressure0.6 MPa
Food Grade ComplianceFDA / EC 1935/2004

Integrated Design Benefits

  • Thickening and dewatering in single horizontal chamber
  • No filter cloths or high-pressure water for cleaning
  • Fully enclosed design prevents aerosol formation
  • Quick-release end cone for cake dryness adjustment
  • Remote torque monitoring with automatic overload protection
  • Sanitary polishing on all food-contact surfaces
Process Sequence

Material Flow Along Horizontal Axis

1
Feed & Gravity Zone
Flocculated sludge enters via DN100 flange. Free water drains through lower ring gaps. Solids concentration increases from 0.5-2% to 6-8% within first 800mm of screw length.
→
2
Progressive Compression
Spiral pitch reduces from 160mm to 70mm over 1400mm. Pressure gradually increases to 0.4 MPa. Bound water is forced out through ring stack gaps.
→
3
Final Pressure & Discharge
Adjustable cone creates terminal pressure of 0.6-0.7 MPa. Dewatered cake (22-30% DS) exits through 120mm outlet. Filtrate collected in lower pan.
Key Differentiation Factors
E
Energy Smart
1.47 kW total power consumption for 60 kg/h dry solids output. Specific energy consumption: 0.0245 kWh per kg dry solids processed.
H
Horizontal Integration
Lower profile (1600mm height) enables installation under standard mezzanines. Direct coupling to upstream flocculation tanks without lifting equipment.
F
Food Grade Engineering
All wetted parts SS304 electropolished to Ra 0.8μm. No lubrication points inside process zone. CIP compatibility with alkaline and acidic detergents.
A
Automatic Torque Control
Sensor feedback adjusts feed pump speed and back-pressure actuator. Maintains stable cake dryness regardless of feed concentration variations.
Target Applications for QXDL-252
Potato starch wastewater
Fruit juice production sludge
Dairy processing residuals
Brewery spent grain dewatering
Meat rendering plant effluent
Biogas plant digestate
Vegetable washing line sludge
Confectionery waste treatment
Edible oil refinery waste
Frequently Encountered Conditions & Remedies
Reduced throughput below 30 kg/h dry solids
Check feed sludge total solids: minimum requirement is 1.2 percent. If below, increase thickening time upstream or adjust polymer dosage. Inspect inlet for bridging; install small diameter agitator if necessary.
Cake dryness lower than 20 percent DS
Increase back-pressure by turning the end cone clockwise (maximum 4 full turns). Monitor motor current; do not exceed 110 percent of rated current. Verify that the compression zone rings are not worn beyond 0.3 mm clearance.
Excessive vibration during operation
Possible foreign object inside chamber or uneven ring stack. Stop machine immediately. Run reverse rotation for 10 seconds. Open inspection ports and remove any fibrous material wrapped around shaft.
High filtrate turbidity (visible solids)
Ring gaps may be worn or misaligned. Measure gap clearance; acceptable range is 0.2-0.4 mm. Replace ring segments if clearance exceeds 0.5 mm. Verify polymer mixing quality.
Routine Maintenance Schedule
Daily: Visual check of filtrate clarity and cake discharge consistency
Weekly: Lubricate drive chain (if present) with food-grade NLGI 2 grease
Monthly: Inspect mechanical seal for leakage; replace if >5 drops per minute
Quarterly: Measure ring stack clearance at three positions along shaft
Annually: Replace all ring segments and check spiral shaft straightness
Safety and Operational Limits
Maximum feed solids concentration: 8 percent (above this may cause bridging)
Minimum operating temperature: 4°C (sludge viscosity increases below this point)
Maximum back-pressure: 0.7 MPa (exceeding may damage ring stack)
Ambient temperature range: 0-45°C for electrical enclosure
Do not process sludge containing abrasive particles >1mm without upstream screening

Equipment Model

 QXDL-252

Dry Sludge Treatment Capacity

30-60 Kg/h

Equipment Dimensions

 L2810mm × W1120mm × H1600mm

Machine Weight

 800kg

Total Power Consumption

 1.47 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 Integrated Horizontal Food Grade Spiral Screw Sludge Dewatering Machine QXDL-252 Suppliers and Integrated Horizontal Food Grade Spiral Screw Sludge Dewatering Machine QXDL-252 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 Integrated Horizontal Food Grade Spiral Screw Sludge Dewatering Machine QXDL-252, 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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