The cement screw conveyor is specially designed for Cement, fly ash, mineral powder, limestone powder, slurry, concrete mixtures Designed for powdered, granular, and paste-like materials. Closed-loop continuous conveying equipment , widely used in industrial settings such as concrete mixing plants, stabilized soil mixing stations, cement batching plants, dry-mix mortar production lines, building material processing facilities, and asphalt mixing plants, enabling Horizontal conveying or inclined conveying at ≤45° It is a core specialized device for the powder‑material extraction, metering, batching, and transfer processes, boasting outstanding advantages such as stable conveying, reliable sealing, convenient installation, and straightforward maintenance.

Cement screw conveyor for the mixing plant—transports cement powder to the powder weighing system.

I. Product Overview

Cement screw conveyors (commonly referred to in the industry as screw conveyors, screw feeders, or auger conveyors) rely on the continuous rotation of helical flights to generate axial thrust, enabling the directional transport of materials along a fixed pipeline and ensuring sealed, continuous, and stable conveying. This equipment is specifically designed for concrete mixing plants, cement factories, and batching facilities, accurately delivering cement powder to metering bins, storage silos, and mixing units, thereby guaranteeing batching accuracy and uninterrupted production.

Core structural features:

1. The feed inlet features a spherical universal design. : Can 360° Rotatable adjustment direction, quick disassembly and assembly, and flexible docking, compatible with various device interfaces.
2. Rigid connection of the entire machine via steel pipe flanges : The segmented steel tubes are securely fastened into a single unit using high-strength flanges, ensuring excellent structural rigidity, resistance to deformation, and superior sealing performance.
3. Foundation-free rapid installation : No dedicated foundation is required; it can be directly and securely connected to the accompanying equipment, occupying a small footprint and allowing for greater flexibility in on-site layout.
4. Fully sealed, leak-proof structure : The entire machine is free from water leakage, dust emissions, and material spillage, meeting the requirements for environmentally friendly, enclosed conveying.

II. Core Design and Technical Highlights

1. Heavy-duty gearbox, high torque, low noise It employs a heavy-duty gear reduction mechanism, offering high transmission efficiency and substantial output torque. It operates at full load for extended periods without overheating, with low noise levels, making it well-suited for continuous operation in industrial environments.
2. Built-in stirring and anti-caking function During the helical rotation, materials such as cement and mineral powder are gently mixed and loosened, preventing moisture‑induced caking and avoiding material blockages and machine stalling.
3. Double pitch + Variable-pitch anti-clogging design It employs an upper-wide–lower-narrow variable-pitch design, with a smaller pitch in the lower section, effectively reducing material compression and preventing blockages caused by excessive compaction, thereby ensuring smoother conveying.
4. High-precision seamless cold-rolled blades A single‑piece, continuous, seamless helical blade, cold‑worked to achieve strain hardening, features a smooth surface with excellent wear resistance, minimal pitch error, and high dynamic balance accuracy, ensuring smoother operation.
5. Floating transmission prevents material jamming. All transmission components employ floating connections, and the screw conveyor, suspended bearings, and tail section are configured as a flexible suspension system, fundamentally preventing jamming and material blockages.
6. Suspended large-space suspension bearing The intermediate idler bearing adopts a suspended design, increasing the material flow cross-section and reducing conveying resistance. Combined with high rotational speeds and variable pitch, it enables rapid and uniform material feeding.
7. Multi-functional integrated operations It can perform additional functions such as material lifting, mixing, stirring, heating, and cooling during conveyance, thereby simplifying the production line configuration.
8. Waterproof shell protection A waterproof sealing structure is installed at the flange connection; when used outdoors, it prevents rainwater from entering the pipe, thereby avoiding moisture‑induced caking of cement and equipment overheating.

III. Model and Technical Specifications Table

IV. Key Product Advantages

1. Powerful performance and stable operation

It employs a heavy-duty, dedicated reducer that delivers high torque, excellent shock resistance, and low noise, making it suitable for 24-hour continuous operation under heavy load. The motor is equipped with high-quality bearings, ensuring smooth startup, extended service life, and a low failure rate.

2. The blades are highly durable and wear-resistant, doubling their service life.

The helical blades are formed by integral cold rolling of high-strength, wear-resistant steel plates and undergo surface hardening treatment. The hardness of the outer edge can reach HB240. , with wear resistance more than doubled compared to standard blades; pitch error is less than 5 mm, offering high dynamic balancing accuracy, ensuring uniform and stable conveying, and directly improving metering precision.

3. Fully sealed to prevent leaks and water seepage

The fuselage flange connection is equipped with a dedicated sealing gasket and an anti‑seepage structure, effectively preventing rainwater ingress, dust escape, and material leakage, thereby meeting environmental protection and safe production requirements and minimizing on-site dust pollution and material waste.

4. No material blockage, no material jamming

A fourfold anti‑clogging design—featuring a floating connection, variable pitch, double pitch, and a large‑diameter suspension bearing—completely eliminates the issues of material blockage and machine stalling caused by compressible, agglomerating materials such as cement and fly ash, ensuring uninterrupted production.

5. Diverse interfaces, flexible installation

Feed inlet and discharge outlet support Spherical hinge type, standard pipe flange, flange, square flange With multiple connection options, it allows for free adjustment of angle and steering, enabling quick coupling with storage bins, metering hoppers, mixers, and other equipment.

6. No foundation required; minimal footprint.

The unit boasts high structural rigidity, eliminating the need for a dedicated foundation; it can be suspended, supported, or directly connected to equipment, significantly shortening the installation timeline while saving space and reducing civil‑engineering costs.

7. Multi-functional and cost-effective

collection Conveying, lifting, stirring, mixing, and batching Integrates multiple functions into a single unit, reducing the need for multiple devices, lowering capital and operational costs, and enhancing overall production line efficiency.

V. Overall Structure and Detailed Description

The cement screw conveyor is composed of Motor assembly, gear reducer, input-stage assembly, intermediate section and intermediate support housing, output-stage assembly, front support housing, oil‑lubrication system It consists of standard accessories such as canvas connecting sleeves, suspension wire ropes, cables, and fasteners.

Detailed Explanation of Key Components

• Motor : High torque, high efficiency; equipped with imported bearings; high insulation class; temperature-resistant, durable, and long-lasting.
• Gearbox : High-quality cast steel housing, heavy-duty gear transmission, high torque, low noise, excellent sealing, and oil-tight.
• Spiral blade : One-time cold-rolled forming, double pitch / Variable-pitch structure with a smooth, burr-free surface; materials do not stick, clog, or compress.
• Spline shaft / Coupling : High-strength spline connection, ensuring smooth power transmission, excellent shock resistance, reduced risk of shaft breakage, and convenient disassembly and assembly.
• Fuselage tube : Thickened seamless steel pipe, offering high rigidity and resistance to deformation; can be installed horizontally or at an incline.
• Inlet and outlet : Universal ball-joint design, with adjustable angles, flexible steering, and convenient docking.
• Observation port / Access panel : Standard observation port included, facilitating routine inspection, cleaning, and maintenance.

VI. Operating Principle

The cement screw conveyor operates on the classic principle of helical propulsion: when the motor drives the gearbox, which in turn rotates the screw assembly, the material is propelled axially by the thrust of the screw flights, combined with its own weight and the frictional resistance of the pipe walls, enabling continuous, directional movement along the conveying pipeline. Sealed, continuous, stable The conveying process. The entire machine features a simple structure, direct drive, and reliable operation.

VII. Industry Application Scenarios

1. Cement manufacturing enterprise : Closed-loop conveying of raw meal, clinker, and finished cement, as well as silo-based transfer.
2. Ready-mix concrete batching plant : Precise feeding of cement, fly ash, mineral powder, and limestone powder into the metering system.
3. Stabilized Soil Mixing Plant : Integrated supply of powdered material, including metered conveying, batching, and mixing.
4. Dry-mix mortar production line : Raw material bin feeding, enclosed lifting, and continuous batching and conveying.
5. Concrete batching plant : Fully enclosed cement lifting, metering, and intermediate conveying.
6. Asphalt mixing plant / Building materials factory : Directional conveying of mineral powder, stone powder, and filler dust.
7. Construction site : Temporary powder material transfer, feeding, and mixing with integrated conveying.

VIII. Real-World Customer Application Cases

1. Ready-mixed Concrete Plant Project Material conveyed: concrete mix; Equipment model: LSY200; Conveying length: 26 m; Conveying capacity: 6–8 m³/h; Operates stably, with no dust leakage and continuous operation without material blockages.

2. Cement Blending and Conveying System Material conveyed: cement; Equipment model: LSY315; Conveying length: 10 m; Hourly capacity: 20 m³/h; High measurement accuracy and low failure rate, meeting the requirements of fully automated production lines.

3. Powder material lifting at the dry-mix mortar plant Material conveyed: quartz sand, cement, and fly ash blended powder. Using the LSY250 long‑distance model, closed‑loop conveying is achieved, eliminating dust and waste, and passing environmental compliance inspection.

4. Stabilized Soil Mixing Plant Multiple LSY160 units operate in tandem to convey mineral powder and lime powder, running continuously 24 hours a day with minimal maintenance and annual downtime due to failures of less than 24 hours.

9. Installation Dimension Standards for Inlet and Outlet Ports

Equipment provided Three standard connection methods , covering all models from LSY140 to LSY400 and accommodating various installation angles and on-site connection requirements:

1. Clamp-type bag connection : Quick to install and provides a tight seal, making it ideal for applications requiring rapid disassembly.
2. Suspension rod-type bag connection : Higher load-bearing capacity and stable sealing, ideal for long-distance, suspended installations.
3. Universal joint flange connection : Adjustable angle and rigid docking, suitable for high-precision, fixed-installation applications.

All specifications are available in standard sizes for inclination angles ranging from 20° to 50°, ensuring precise on-site installation and seamless joints.

X. Installation Standards and Commissioning Requirements

1. Basic Preparation : The installation foundation must be prepared in advance. 20 The concrete pour has been completed, ensuring adequate strength and stability to prevent equipment settlement and deformation.
2. Cleaning Inspection : Before installation, remove any dust and debris accumulated during transportation to ensure that all components are clean and undamaged.
3. Flange connection The adjacent casing flange surfaces are flat and tightly abutted, ensuring a tight seal; the inner surface of the casing exhibits misalignment. ≤2mm。
4. Clearance Adjustment : The clearance between the outer diameter of the helical element and the housing shall be no less than the standard clearance. 50% , with the gap size customizable upon request.
5. Coaxiality Control : The coaxiality between the spindle and the reduction motor meets the requirements. GB1184-80 Standards ensure smooth operation.
6. Tightened securely : The base, flange, suspension device, and anchor bolts are all securely fastened with no looseness.
7. Lubrication and Test Run : Add sufficient lubricant and proceed to 4 No-load test run for more than one hour Only after verifying that noise levels, temperature, sealing, and steering are all within normal parameters may the equipment be operated with material.

XI. Standard Accessories and Optional Configurations

Standard accessories

Screw shaft, reduction gearbox, motor, feed inlet, discharge outlet, canvas coupling sleeve, suspension wire rope, cable, lubrication assembly, fasteners, inspection port, sealing gasket.

Optional configuration

Stainless steel construction, explosion-proof motor, variable-frequency speed control, extended suspension bearings, specialized flange connections, rainproof enclosure, wear-resistant lining, and PLC automatic control.

XII. Purchasing and Selection Guidelines

1. Key Considerations for Scientific Model Selection

• Specify material type: powder / Granule /  Paste-like, dry ingredients /  Wet material, density, flowability, corrosivity.
• Determine operating parameters: hourly production rate, conveying length, installation angle, and site conditions (indoor). / Outdoor /  Explosion-proof).
• Matching interface type: Select the feed based on the accompanying equipment. / Discharge outlet connection method.

2. Typical Model Reference LSY230 model: screw diameter Φ230 mm, applicable length 2–15 m, with a rated cement conveying capacity of up to 65 tons per hour 。

3. Precautions for Storage and Transportation

• Avoid exposure to rain, direct sunlight, and heavy pressure; keep away from acids, alkalis, organic solvents, and corrosive media.
• Storage distance from heat-generating equipment ≥1 Rice, to prevent high temperatures from damaging the seals and bearings.

4. Operating and Usage Recommendations The conveying speed should not be too high; a maximum of 2.5 m/s is recommended to prevent overload, reduce energy consumption, and minimize wear.

13. Common Fault Diagnosis and Troubleshooting Methods

XIV. Summary

The cement screw conveyor, thanks to Robust construction, environmentally friendly sealing, clog-resistant and durable, easy installation, multi‑functional in one unit. Its core strengths have made it a leading player in the concrete, cement, dry-mix mortar, and building materials industries. Standard conveyor equipment Proper equipment selection, standardized installation, and regular maintenance can ensure long-term stable operation, significantly reduce failure rates, minimize downtime losses, and enhance production efficiency and economic benefits. The cement screw conveyor is specifically designed for… Cement, fly ash, mineral powder, limestone powder, slurry, concrete mixtures Designed for powdered, granular, and paste-like materials. Closed-loop continuous conveying equipment , widely used in industrial settings such as concrete mixing plants, stabilized soil mixing stations, cement batching plants, dry-mix mortar production lines, building material processing facilities, and asphalt mixing plants, enabling Horizontal conveying or inclined conveying at ≤45° It is a core specialized device for the powder‑material extraction, metering, batching, and transfer processes, boasting outstanding advantages such as stable conveying, reliable sealing, convenient installation, and straightforward maintenance.