Automated Screw Feeder with Various Specifications

• Customization: Available
• After-sales Service: After-Sales Service
• Warranty: One Year Warranty,
• Model NO.: DL
• Control Type: PLC
• Customized: Customized
• Condition: New
• Automatic Grade: Automatic
• Certification: CE, RoHS, GS, ISO9001
• Type: Sand Casting
• Metering Accuracy: 0.5% (with Weighing System)
• Speed Range: VFD Adjustable
• Motor Power: 0.75 - 15 Kw
• Conveying Length: Customizable
• Transport Package: Custom
• Specification: Customizable
• Trademark: DL
• Origin: Qingdao, China
• HS Code: 8474802000
• Production Capacity: 800
• Package Size: 589.00cm * 235.00cm * 239.00cm
• Package Gross Weight: 24000.000kg

Product Description

Product Description

Product Description of Screw Feeder

The Screw Feeder is a continuous volumetric conveying device widely used in industrial applications such as resin sand mixing systems, coated sand lines, cement batching, powder modification, biomass fuel, flue gas desulfurization, chemical reactor feeding, etc., for stable, uniform, and controllable feeding of bulk materials like base sand, powders, granules, and additives. Utilizing a rotating screw shaft to propel material, combined with frequency control, weight feedback, and intelligent control, it enables applications ranging from coarse feeding to high-precision dosing—making it an essential conveying and metering unit in automated production lines.

Available in horizontal, inclined (≤20°), or vertical (short-distance) configurations, this screw feeder series can be customized based on material properties, capacity, and space requirements, with a conveying capacity of 0.1–100 m³/h. It is suitable for various operating conditions including ambient, high-temperature, corrosive, and abrasive environments. Its compact structure and excellent sealing prevent dust leakage, meeting environmental and safety standards.

Core Functions & Working Principle

1.  Continuous & Stable Feeding
Driven by a motor, the rotating screw shaft continuously conveys material in a U-trough or tubular housing, ensuring pulse-free, uniform, and stable discharge—eliminating "material interruption" or "surge feeding".

2.  Frequency-Controlled Speed Regulation
(VFD),(0–60 rpm),,.
Equipped with a Variable Frequency Drive (VFD), allowing stepless speed adjustment (0–60 rpm) for precise flow control, adaptable to varying production rates and recipe requirements.

3.  High-Precision Metering (Optional)
Optional integration with load cells + speed encoder enables loss-in-weight or weigh-belt metering systems, achieving dynamic accuracy of ±0.5%—ideal for precise dosing of resin, hardener, and additives.

4.  Wear-Resistant Design
Screw blades made of wear-resistant alloy steel (e.g., NM400, 65Mn) or tungsten carbide cladding/spraying; housing lined with ceramic tiles or polyurethane plates—greatly extending service life, especially for abrasive materials like silica sand or ore powder.

5.  Sealing & Dust Control
Multi-layer sealing (labyrinth + packing + air seal) at inlets, outlets, and bearings prevents dust leakage.
Optional dust extraction port connects to pulse cartridge filters for a clean workshop environment.

Key Features

Controllable Flow, Precise Adjustment
VFD enables stepless adjustment; capacity adjustable from 10%–100% with fast response and high accuracy.

Robust Structure, Smooth Operation
Heavy-duty frame, rigid U-trough/tubular housing, drive system with hardened gear reducer + coupling—low vibration, low noise (≤75 dB).

Easy Maintenance, Long Life
Features quick-release end caps, replaceable blades, external bearings—easy inspection; wear parts last 2–5 years depending on conditions.

Smart Integration, Remote Monitoring
Optional PLC module, HMI touchscreen, 4–20mA output, Modbus communication—enables integration with central control for remote monitoring and data logging.

Suitable for dry powders (cement, fly ash), granules (sand, plastic pellets), small lumps (coal, slag), with temperature resistance from -20°C to +400°C (high-temp version).

Safe & Reliable, Comprehensive Protection
Features overload protection, emergency stop, blockage alarm, temperature monitoring—ensures long-term stable operation.

Main Technical Specifications
Parameter	Specification
Model Series	LS-100 / LS-200 / LS-300 / LS-400 / LS-500
Screw Diameter	Φ100 – Φ500 mm
Conveying Length	Customizable
Capacity	Depending on material density & speed
Motor Power	0.75 – 15 kW
Speed Range	VFD adjustable
Metering Accuracy	±0.5% (with weighing system)
Control Mode	Manual / VFD / PLC Auto
Housing Material	Carbon steel / SS304/316 / ceramic lining
Protection Rating	IP54/IP65 for motor & control

Typical Applications

Precise base sand feeding for resin sand mixers

Metering addition of resin and hardener in coated sand lines

Powder batching systems for cement, fly ash, lime

Continuous fuel feeding for biomass boilers and coal-fired power plants

Reactor feeding systems in chemical and pharmaceutical industries

Limestone/urea powder conveying in FGD/SCR systems

Company Profile

Qingdao Dingli Machinery Co., Ltd.

Qingdao Dingli Machinery Co., Ltd. is a company specializing in the production of casting machinery equipment. It mainly manufactures equipment for casting clay sand, resin sand, coated sand, wet sand drying, lost foam casting, sodium silicate sand, etc. It can undertake various turnkey projects, including the design, manufacturing, installation and commissioning of mechanical sand processing. Our factory has strong technical strength and advanced processing equipment. We have long-term and close technical cooperation with many senior experts and scholars from domestic universities and research institutions. We can provide users with high-performance, reliable products and satisfactory services.
Our company adheres to the principles of promoting enterprise development through technology, prioritizing quality, continuous improvement and customer satisfaction. We are willing to sincerely cooperate with friends from all walks of life to achieve common prosperity.
Our company mainly undertakes the following projects:
20-180t/h mechanized clay sand processing production line and single machine equipment turnkey project.
Annual production of 1000 to 20,000 tons of consolidated resin sand casting mechanized production line and single machine equipment turnkey project.
Annual production of 3,000 to 10,000 tons of hot processing coated sand complete equipment and single machine equipment turnkey project.
Annual production of 3,000 to 7,000 tons of hot coating sand regeneration complete equipment and single machine equipment turnkey project.
5-15t/h sodium silicate mechanical production line and single machine equipment turnkey project.
5-30t/h three-stage sand drying equipment and single machine equipment turnkey project.
5-40t/h lost foam casting complete equipment and single machine equipment turnkey project and other types of shot blasting cleaning equipment, lifting equipment, conveying equipment, cooling equipment, magnetic separation equipment, environmental protection dust removal equipment.
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