Shaftless Screw Conveyor For Sludge Handling
Heavy-Duty Shaftless Spiral Conveyor for Municipal & Industrial Wastewater Treatment
The LSY series shaftless screw conveyor is a high-performance material handling system specifically engineered for transporting dewatered sludge, screenings, grit, organic waste, and other difficult-to-handle materials. Unlike conventional shafted screw conveyors, the shaftless design eliminates the center shaft, allowing sticky, fibrous, and high-moisture materials to move smoothly without clogging or material wrapping.
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Product Introduction
LSY Series Shaftless Screw Conveyor Manufacturer - Efficient, Clog-Free Sludge Conveying for Modern Wastewater Treatment Plants
The LSY series shaftless screw conveyor is a high-performance material handling system specifically engineered for transporting dewatered sludge, screenings, grit, organic waste, and other difficult-to-handle materials. Unlike conventional shafted screw conveyors, the shaftless design eliminates the center shaft, allowing sticky, fibrous, and high-moisture materials to move smoothly without clogging or material wrapping.
Designed for continuous operation in demanding environments, the LSY Series provides reliable sludge transfer with minimal maintenance, making it an ideal solution for municipal wastewater treatment plants, industrial wastewater facilities, sludge dewatering systems, recycling plants, food processing factories, and waste management projects.
Manufactured from manganese steel, SS304 or SS316 stainless steel, wear-resistant steel, BioCell's shaftless screw conveyors deliver excellent corrosion resistance, long service life, and dependable performance even under harsh operating conditions. Whether integrated with a screw press, rotary drum screen, MBBR system, or sludge hopper, the LSY Series ensures efficient and cost-effective sludge handling throughout your treatment process.
What Is the LSY Series Shaftless Screw Conveyor?
The LSY Series Shaftless Screw Conveyor is a continuous conveying system designed to transport sludge and other bulk materials without using a central shaft. The shaftless spiral rotates inside a U-shaped trough lined with wear-resistant liners, pushing material toward the discharge outlet with high efficiency.
Compared with traditional shafted screw conveyors, the shaftless design offers significantly better performance when handling viscous, fibrous, stringy, or high-solid-content materials that tend to wrap around conventional shafts.
The conveyor is widely used in wastewater treatment plants as part of sludge dewatering, screenings handling, grit removal, and solids transport systems.
How Does a Shaftless Screw Conveyor Work?
The LSY Series operates using a rotating shaftless spiral that moves material through the conveyor trough.
Step 1 – Material Feeding: Sludge, screenings, or bulk materials enter the conveyor through the inlet hopper.
Step 2 – Shaftless Spiral Rotation: The heavy-duty spiral rotates inside the trough, generating continuous forward movement.
Step 3 – Material Conveying: The shaftless design prevents clogging and wrapping while transporting sticky or fibrous materials smoothly.
Step 4 – Material Discharge: The conveyed material exits through the discharge outlet and is transferred to storage containers, transport equipment, or the next processing stage.
The enclosed structure minimizes odor, leakage, and environmental contamination.
Key Features & Benefits
● Screening of multiple screens installed side by side will be transported and dewatered in one machine;
● Simple structure and reliable running, low maintenance cost;
● Shaftless screw realizes the easy transportation of material;
● Full closed design eliminates the secondary pollution;
● Shaftless screw is made by special molding technology and has high stiffness;
● The compaction chamber consists of a drain-pressing pipe comprising a set of wedge wire bars and washing nozzles;
● Hinged closing element and counterweight can be adjusted for the different requirements;
● Materials of channel: carbon steel hot dip galvanization, stainless steel SS304 or SS316L;
● Materials ofscrew: carbon steel Q345, stainless steel SS304 or SS316L;
● Materials of liner: HDPE, NYLON, or UHMWPE
Technical Specifications
| Model |
Flowrate (m³/h) |
Power (KW) |
A (mm) |
B (mm) |
H (mm) |
L1 (mm) |
L2 (mm) |
Recommended Length L(mm) |
Installation Angle |
| LSY260 | 2.2 | 1.1~1.5 | 260 | 370 | 270 | 150 | 600 | ≤12 | ≤30° |
| LSY320 | 5.5 | 1.5~2.2 | 320 | 430 | 340 | 200 | 700 | ≤15 | ≤30° |
| LSY355 | 8 | 2.2~3.0 | 355 | 465 | 380 | 250 | 800 | ≤15 | ≤30° |
| LSY420 | 11 | 3.0~5.5 | 420 | 530 | 430 | 250 | 800 | 20 | ≤30° |
Note: Customized dimensions and capacities are available based on project requirements.
Typical Applications
The LSY Series Shaftless Screw Conveyor is widely used in wastewater treatment and bulk material handling industries.
| Municipal Wastewater Treatment |
● Sludge transfer ● Screenings conveying ● Grit transport ● Biosolids handling |
| Industrial Wastewater Treatment |
● Chemical wastewater plants ● Textile wastewater treatment ● Food processing wastewater ● Pharmaceutical wastewater |
| Sludge Dewatering Systems |
● Screw press discharge ● Belt filter press discharge ● Centrifuge sludge conveying |
| Recycling & Solid Waste |
● Municipal solid waste ● Organic waste ● Compost facilities ● Recycling plants |
| Food Processing |
● Food waste transport ● Organic residue handling ● Fruit and vegetable processing waste |
| Paper & Pulp Industry |
● Paper sludge conveying ● Fiber residue transport |
| Biomass & Energy |
● Biomass residue ● Wood chips ● Agricultural waste |
| Chemical Industry |
● Powder conveying ● Filter cake transport ● Process residue handling |
Optional Configurations
BioCell offers customized shaftless screw conveyors to meet various operating requirements. Available options include:
● SS316 Stainless Steel Construction
● Wear-Resistant UHMW-PE Liners
● Variable Frequency Drive (VFD)
● Explosion-Proof Motor
● Automatic PLC Control
● Inlet Hopper
● Multiple Discharge Ports
● Cover with Inspection Doors
● Customized Inclination Angle
● Anti-Corrosion Coating
● Heavy-Duty Gear Reducer
Why Choose BioCell?
Professional Manufacturer of Sludge Handling Equipment
BioCell provides reliable conveying solutions for municipal and industrial wastewater treatment projects worldwide.
Our Advantages
● Experienced wastewater engineering team
● Advanced CNC manufacturing equipment
● Strict quality control procedures
● ISO-compliant production
● Customized engineering services
● OEM & ODM manufacturing
● Worldwide project experience
● Fast delivery and responsive technical support
Our goal is to help customers improve operational efficiency while reducing maintenance costs and equipment downtime.
Quality Assurance
Each LSY Series Shaftless Screw Conveyor undergoes comprehensive quality testing before shipment, including:
● Raw material inspection
● Spiral dimensional verification
● Welding quality inspection
● Dynamic balance testing
● Gear motor testing
● Load operation testing
● Noise and vibration testing
● Factory Acceptance Test (FAT)
These rigorous inspections ensure reliable performance and long-term durability in demanding operating conditions.
Frequently Asked Questions
Q1: What is a shaftless screw conveyor?
A: A shaftless screw conveyor is a material conveying system that uses a centerless spiral to transport sludge, screenings, and bulk materials. Without a central shaft, it offers superior performance when handling sticky, fibrous, or high-moisture materials.
Q2: Why choose a shaftless screw conveyor instead of a shafted conveyor?
A: A shaftless screw conveyor eliminates shaft wrapping and clogging, making it ideal for sludge, screenings, food waste, and fibrous materials. It also reduces maintenance and improves conveying reliability.
Q3: What materials can the LSY Series handle?
A: The LSY Series is suitable for:
● Dewatered sludge
● Sewage sludge
● Screenings
● Grit
● Organic waste
● Food waste
● Biomass
● Paper sludge
● Compost
● Industrial filter cake
● Powdered bulk materials
Q4: Can the conveyor operate continuously?
A: Yes. The LSY Series is designed for continuous 24/7 operation in municipal and industrial wastewater treatment facilities.
Q5: Is the conveyor customizable?
A: Absolutely. BioCell customizes conveyor diameter, length, inclination angle, drive system, liner material, discharge configuration, and control system according to project requirements.
Q6: What materials are available?
A: Standard construction uses SS304 stainless steel, while SS316 stainless steel is available for corrosive environments such as chemical plants, coastal installations, and high-chloride wastewater applications.
Q7: How often does the conveyor require maintenance?
A: Routine maintenance mainly involves checking the gear motor, wear liners, bearings, and fasteners. The shaftless design significantly reduces maintenance compared with traditional shafted conveyors.
Q8: Can BioCell supply complete sludge handling systems?
A: Yes. BioCell offers integrated sludge handling and wastewater pretreatment solutions, including:
● Rotary Drum Screens
● MBBR Integrated Wastewater Treatment Systems
● MBBR Bio Media
● Media Retention Screens
● Coarse Bubble Diffusers
● Screw Press Sludge Dewatering Machines
● Shaftless Screw Conveyors
These systems can be combined into complete turnkey wastewater treatment solutions.
Request A Free Quote Today
Looking for a Reliable Shaftless Screw Conveyor Manufacturer?
Whether you need to transport dewatered sludge, screenings, grit, or organic waste, the LSY Series Shaftless Screw Conveyor delivers dependable, clog-free performance with low operating costs and long service life.
BioCell's engineering team can recommend the most suitable configuration based on your sludge characteristics, conveying distance, installation layout, and treatment capacity. Contact us today to receive:
● Free technical consultation
● Customized equipment recommendations
● CAD drawings and layout assistance
● Competitive factory pricing
● Product catalogs and technical datasheets
● Fast quotation within 24 hours
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