Working Principle and Core Advantages of LSY Screw Conveyors

2026-08-27

In concrete production and building material conveying systems, the stability of powder conveying directly affects the accuracy of batching and the quality of finished concrete. The LSY series screw conveyor is a professional tubular screw conveyor, a standard component of both stationary and mobile concrete mixing plants. It is widely used for conveying dry powders such as cement, fly ash, and mineral powder, featuring fully enclosed operation, stable feeding, and strong site adaptability. This article explains in detail the working principle and key advantages of the LSY screw conveyor, helping global engineering procurement companies make efficient selections.

What is an LSY screw conveyor?

The LSY screw conveyor is a closed-loop tubular auger conveyor specifically developed for engineering machinery. Unlike traditional trough conveyors, it adopts a fully enclosed, integral circular tube structure, specifically optimized for long-distance inclined conveying of building powders. A complete range of models is available, including modular specifications such as LSY168, LSY219, LSY273, LSY323, and LSY407, perfectly compatible with cement silos and various concrete mixing plants, making it a mainstream powder conveying equipment for global engineering projects.

Working Principle of LSY Screw Conveyor

The LSY screw conveyor achieves continuous and quantitative material conveying through mechanical rotation, ensuring stable and efficient operation: The equipment's motor and reducer form a high-efficiency drive system, driving the central screw shaft and thickened screw blades at a uniform speed. Dry powders such as cement and fly ash enter the closed pipeline from the cement silo outlet and are received by the evenly arranged screw blades. Relying on the axial thrust generated by the blade rotation, combined with material friction and its own gravity to prevent idling, the material is continuously and evenly pushed from the feed end to the discharge end.

By adjusting the equipment's operating speed, the conveying volume can be precisely controlled, achieving precise quantitative feeding. The equipment is perfectly compatible with the automatic weighing system of concrete mixing plants, ensuring accurate raw material proportions and stable concrete product quality.

Core Structural Components

The stable operation of the LSY screw conveyor benefits from its standardized and refined optimized structural design:

Power Drive System: Equipped with a high-torque motor and reducer, the output power is stable, eliminating problems such as material jamming and intermittent equipment operation.

Wear-resistant screw assembly: Utilizes thickened, integral screw blades, offering strong resistance to deformation and suitable for long-term, heavy-duty powder conveying operations.

Fully enclosed tubular casing: Seamless steel pipe body provides excellent dustproof and isolation performance, preventing powder leakage.

Stable suspension bearing: High-sealment central suspension bearing reduces screw shaft vibration and significantly extends equipment lifespan.

Standard docking interface: Universal standardized design for inlet and outlet ports allows for quick docking with cement silos and mixing hosts, offering excellent installation adaptability.

Core Advantages of LSY Screw Conveyor:

Fully enclosed dustproof, environmentally friendly operation: The entire machine adopts a fully sealed tubular structure, eliminating powder leakage and dust generation during cement and fly ash conveying, effectively optimizing the construction site environment, meeting international environmental construction standards, and completely solving the dust pollution problem of traditional open conveying equipment.

Anti-clogging design, stable conveying: Optimized screw pitch and blade structure effectively prevent material accumulation and blockage. Even with ultrafine, easily agglomerated materials like mineral powder, the LSY screw conveyor maintains smooth and continuous feeding, significantly reducing equipment failure rates and ensuring construction continuity.

Flexible Installation and Strong Site Adaptability: The LSY screw conveyor can adapt to various complex site layouts of fixed and mobile mixing plants, perfectly suited for high-low docking scenarios of cement silos, offering flexible and unrestricted installation conditions.

Modular Design for Export Transportation: The equipment adopts a segmented flange connection and modular assembly structure, facilitating disassembly, packaging, and transportation. It is perfectly suited for overseas container shipping projects, allowing for rapid on-site installation and commissioning.

Low Maintenance Costs and Long Service Life: The machine has a simple structure and few easily damaged parts. Thickened wear-resistant screw blades and high-sealing bearings ensure durability, making daily maintenance and parts replacement simple and convenient, significantly reducing the later maintenance costs of the mixing plant.

High Conveying Accuracy and Excellent Adaptability: Stable operating speed and uniform feeding volume can accurately coordinate with the automatic weighing system of the concrete mixing plant, effectively ensuring accurate concrete raw material proportions and improving the qualified rate of finished concrete.

In summary, thanks to its advantages such as sealed and environmentally friendly operation, anti-clogging stability, flexible installation, and low operation and maintenance costs, the LSY screw conveyor has become an indispensable core supporting equipment for modern concrete mixing plants. Zeyu's LSY series screw conveyors offer a complete range of models, support customization of length and angle, and are CE certified. They are perfectly compatible with all types of stationary and mobile concrete mixing plants, providing reliable powder conveying solutions for infrastructure projects worldwide.