Screw Feeder Continuous Feeding and Weighing Solution

Screw Feeder Manufacturer – Precision Continuous Feeding and Weighing Solution

1.Product Introduction

A Screw Feeder is a compact and reliable feeding system designed for the continuous conveying, metering and controlled feeding of powdery and fine-granular materials. By combining screw conveying technology with an optional weighing and control system, it can provide stable material flow and accurate quantitative feeding.

Traditional feeding systems may suffer from unstable feeding rates, material bridging, dust leakage, difficult maintenance and inaccurate dosing. These problems can directly affect product quality, production efficiency and operating costs.

Our Screw Feeder integrates conveying, feeding and optional dynamic weighing into one compact system. The screw rotates at a controlled speed to continuously move material from the inlet to the outlet. When equipped with weighing sensors, speed sensors and an intelligent controller, the system can monitor material flow in real time and automatically adjust feeding speed.

This solution is particularly suitable for cement plants, mining, chemical plants, metallurgy, power generation, fertilizer production, ceramics, grain processing and other industries where stable powder or fine-granular material feeding is required.

Typical Materials

The Screw Feeder can be configured for a wide range of materials, including:

Cement and cement raw materials

Fly ash

Coal powder

Limestone powder

Mineral powder

Slag powder

Chemical powders

Fertilizer materials

Fine granular materials

Other dry bulk materials

For applications requiring continuous mass measurement, the Screw Feeder can be configured as a weighing screw feeder or screw metering scale.

2. Technical Parameters

The exact specification should be selected according to material characteristics, required feeding capacity, installation conditions and process requirements.

ParameterSpecification

Product TypeScrew Feeder / Weighing Screw Feeder

Feeding TypeContinuous Feeding

Material TypePowdery and Fine-Granular Materials

Feeding CapacityCustomized according to project requirements

Dynamic Measurement Accuracy≤ ±1.0%

Static Measurement Error≤ ±0.5%

Control AccuracyBetter than ±1.0%

Screw DiameterApprox. Φ100–Φ400 mm, depending on model

Speed RegulationVariable Frequency Speed Control

Speed RatioUp to 10:1, depending on configuration

Power Supply220V ±10%, 50Hz for control system

Drive SystemGeared Motor + Variable Frequency Drive

Weighing MethodContinuous Dynamic Weighing

Control MethodAutomatic / Manual

CommunicationPLC / DCS integration available

Operating TemperatureApprox. -10°C to +40°C

InstallationHorizontal or according to process requirements

StructureSingle-Screw or Double-Layer Screw Design

CustomizationOEM / ODM available

The manufacturer's published technical information lists dynamic cumulative error at ≤1%, static measurement error at ≤0.5%, and control accuracy better than 1%. Actual performance depends on material characteristics, installation, calibration and operating conditions.

For another published screw metering configuration, the stated conventional range is approximately 0.5–120 t/h, with screw tube diameters of approximately Φ159–Φ600 mm. Final parameters should therefore be confirmed according to the customer's project.

3. Why Choose Our Screw Feeder?

Many conventional screw conveyors are designed mainly for transportation. Our Screw Feeder can be configured as an integrated feeding and metering solution, making it suitable for applications where stable flow and quantitative feeding are important.

1. More Than Simple Material Conveying

A conventional screw conveyor mainly transports material from one location to another.

Our weighing Screw Feeder can integrate:

Screw Conveying + Dynamic Weighing + Speed Measurement + Automatic Control

This allows the customer to monitor and control the actual feeding rate rather than relying only on volumetric feeding.

2. Stable Continuous Feeding

Variable-frequency speed regulation allows the screw speed to be adjusted according to process requirements.

The control system can compare the actual feeding rate with the target value and automatically adjust the motor speed to maintain stable material flow.

3. Compact and Space-Saving Design

The screw conveying structure integrates material transportation and feeding functions into one machine. Its compact configuration makes it suitable for production lines with limited installation space.

4. Better Dust Containment

The enclosed screw structure is particularly suitable for dusty powder materials. Compared with open conveying structures, it can help reduce material leakage and dust dispersion.

5. Easy Integration With Automation Systems

The weighing controller can communicate with PLC, DCS and other plant automation systems, supporting centralized production monitoring and automatic process control.

6. Customized According to Material

Different materials have different bulk densities, flowability, moisture content and abrasiveness.

We can customize the screw diameter, screw structure, motor power, feeding capacity, material-contact components and control system according to the customer's application.

Why Choose Zhitian?

ComparisonConventional Screw ConveyorZhitian Screw Feeder

Material ConveyingYesYes

Quantitative FeedingLimitedYes

Dynamic WeighingUsually NoAvailable

Variable Speed ControlOptionalAvailable

Automatic Flow ControlLimitedAvailable

PLC/DCS IntegrationDepends on systemAvailable

Dust-Enclosed DesignAvailableAvailable

OEM/Customized DesignLimitedSupported

Industrial ApplicationsGeneralCement, Mining, Chemical, Metallurgy, etc.

Company Strengths

   Founded: 2011

   Facility Area: 10,000 m²

   Annual Output Value: Over 20 million RMB

   Team Size: 45 employees

    Senior Engineers: 4

    Professional Engineers: 15

    Product Portfolio: 30+ series, 200+ models

    Core Product Categories: Metering equipment, conveying equipment, magnetic separation equipment, dust collection equipment

   Industries Served: Cement, building materials, chemicals, metallurgy, calcium carbide, lime kilns, ceramics, grain & oil, mining, coal – 10+ industries

  Technical Collaborations: Partnered with multiple renowned design institutes across China (including Beijing, Tianjin, Hefei, Qinhuangdao, and Sinopec Beijing Design Institute)

  Sales & Service Coverage: Nationwide, with full pre-sales consultation, on-site commissioning, and post-sales support

    Customization Capability: Available upon customer request

   Certifications & Compliance

   ISO 9000 Quality Management System Certified

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• Service & Support

• Pre-sales: Free material testing, engineering calculations, and site assessment

• Installation & Commissioning: On-site technical guidance until stable operation is achieved

• Training: Comprehensive operator and maintenance training

• Warranty: 12 months standard (extended options available)

• Spare Parts: Common wear parts in stock, emergency dispatch within 24 hours

• Remote Service: Optional GPRS module for remote diagnostics, tuning, and firmware updates

• Response Time: 2-hour response, 48-hour on-site arrival (major domestic regions)

For OEM and ODM projects, customers can provide material characteristics, feeding capacity, equipment dimensions, installation drawings and control requirements. Our engineering team can then develop a suitable technical solution.

6. Production, Quality Control and Supply Capability

Quality starts from raw material inspection and continues throughout manufacturing, assembly and final testing.

Production Process

The typical Screw Feeder production process includes:

Technical Design → Material Selection → Steel Plate Cutting → Component Processing → Screw Blade Fabrication → Welding → Machining → Surface Treatment → Component Assembly → Motor & Electrical Installation → Calibration → Factory Inspection → Packing → Shipment

7.Customer Cases and Applications

Q1. What is the minimum order quantity?

For standard equipment, the order quantity can be discussed according to the customer's actual project requirements. For customized OEM/ODM equipment, the minimum quantity depends on the design, material and production requirements.

Please contact us with your material type, capacity and equipment dimensions for a quotation.

Q2. Can you provide samples?

Yes. For equipment such as Screw Feeders, a complete physical sample is usually not necessary for every project. We can first provide technical drawings, specifications, configuration recommendations and other documents.

For special applications, sample testing can be discussed according to material characteristics and project requirements.

Q3. How long is the delivery time?

Delivery time depends on the equipment model, quantity, customization requirements and current production schedule.

Standard products can normally be arranged faster, while customized OEM/ODM projects require additional engineering and production time.

The company's published product information currently indicates a 3–5 day delivery time for one weighing screw feeder listing; customized projects should be confirmed separately before ordering.

Q4. How do you handle international transportation?

We can coordinate export packaging and transportation according to the customer's destination and project requirements.

The final transportation solution depends on equipment dimensions, shipment weight, destination and customer requirements.

A Screw Feeder is more than a material conveying machine. For modern industrial production, it can become an important part of the automated feeding, weighing and batching system.

By combining mechanical conveying, variable-speed control, dynamic weighing and intelligent automation, Zhitian provides customers with a flexible solution for continuous powder and fine-granular material feeding.