Rubber granules flexible screw conveyor
Friday February-06 2026 17:51:44
Rubber granules are a common raw material or recycled product, and their conveying efficiency affects the operation of the entire production line. A flexible screw conveyor for rubber granules can continuously convey rubber granules horizontally, vertically, or at an inclined angle. The conveying process is enclosed, preventing moisture, contamination, or airborne particles. The pipe diameter of the equipment typically ranges from 40mm to 180mm to accommodate different production volumes. Conveying distances vary depending on the model, with a single unit reaching over 20 meters, and vertical lifting heights exceeding 10 meters.
The rotational speed of the flexible screw conveyor affects the conveying capacity, generally ranging from 300 to 1200 revolutions per minute. With a well-designed screw blade, it can convey 0.5 to 15 tons of rubber granules per hour. Depending on the drive and installation method, it is available in handheld and belt-motor types. The handheld type is lightweight and flexible, facilitating mobile operations; the belt-motor type has a stable structure and is suitable for stationary, large-volume conveying.
Components of the Rubber granules flexible screw conveyor
The components of the flexible screw conveyor for rubber granules are designed for smoother conveying of rubber granules. The conveying pipe uses thickened, flexible, bend-resistant hoses that are not easily damaged even after repeated bending, and also reduce the risk of scratching or soiling the rubber granules. The spiral blades are made of 65Mn high-manganese steel or 304 stainless steel, some with tungsten carbide coating for enhanced wear resistance and suitability for long-term conveying. Motor power is matched according to pipe diameter: 0.75kW for 50mm pipe diameter, 1.1kW for 65mm pipe diameter, and 2.2 to 7.5kW motors for long-distance customized models. Most use three-phase asynchronous motors with adjustable speed, while smaller models can connect to 220V single-phase power. Belt-driven models also include geared motors for stable conveying power and smooth, uninterrupted material movement.
What is the function of a Rubber Granules Flexible Screw Conveyor?
A Rubber Granules Flexible Screw Conveyor can quickly deliver crushed or screened rubber granules to the next processing stage without manual handling, saving labor and time. Its flexible conveying structure avoids hard-on-hard impacts, so the granules are less likely to break or wear during conveying, resulting in more uniform particle size in the finished product. The conveying pipeline is enclosed, preventing dust from escaping and avoiding particle contamination, thus keeping the workshop cleaner. The equipment can also be equipped with a speed control device to regulate the conveying volume, suitable for applications requiring quantitative feeding in rubber granulation and vulcanization processes. Furthermore, it can be used in recycled rubber granule production, mixing and conveying recycled granules in one step, making recycled rubber processing smoother. The flexible screw design allows for rapid restoration of flow in case of temporary blockages by reversing or adjusting the speed, ensuring production line continuity.
Rubber granules flexible screw conveyor parameters
| Parameter Category | Parameter Range |
| Pipe Diameter (mm) | 40 / 50 / 65 / 75 / 90 / 110 / 130 |
| Conveying Capacity (m³/h) | 0.2 – 25 |
| Conveying Distance (m) |
Horizontal: 2 – 20 Vertical: 2 – 8 |
| Working Pressure (MPa) | ≤ 0.3 (Low pressure or micro-pressure) |
| Hose Material | Food-grade PU / Industrial-grade PU / Rubber composite tube |
| Hose Service Life | 1 – 5 years |
| Screw Material | Spring steel / Stainless steel (304/316) |
| Screw Rotating Speed (rpm) | 300 – 1400 |
| Driving Power (kW) | 0.75 – 11 |
| Conveying Angle | 0° – 90° |
| Applicable Materials | Powder, granules, small lumps |
| Working Temperature (℃) | -10 ~ +60 (Standard PU) |
Two types of Rubber granules flexible screw conveyors
The Rubber granules flexible screw conveyor comes in two types: handheld and belt-driven. The handheld design is lightweight, equipped with a low-power motor and a lightweight feed hopper, allowing operators to easily move it to different hoppers or containers for material intake. It is ideal for small-batch, multi-batch environments, such as rubber laboratories, small mixers, or situations where space is limited and the equipment cannot be fixed. It is flexible and easy to use, requiring only minutes for installation and disassembly, but its conveying distance and lifting height are limited. Belt-driven screw conveyors are suitable for long-term, high-intensity production. Equipped with a high-power motor and belt drive, they provide stable power and are typically fixed above the production line or silo. They can transport rubber granules over long distances and at high heights, and are commonly used in large recycling plants, plastic granule production, or chemical raw material transfer. They operate smoothly, with low noise and high load-bearing capacity. Although fixed in position, they are durable and reliable, making them an important piece of equipment in automated production lines.
Rubber Granules Flexible Screw Conveyor Application Cases
There are numerous application cases for rubber granules flexible screw conveyors. For example, a large rubber flooring recycling plant used it to transport rubber granules from shredded waste tires. Previously, the material flow was uneven, generating a lot of dust. After introducing a 120mm diameter belt-driven screw conveyor, the rubber granules were transported in a closed system from the shredder to the storage silo. Equipped with a 3kW variable frequency motor, the speed can be adjusted according to the discharge rate, and the conveying capacity is stabilized at 5 tons per hour. Dust in the workshop has decreased by more than 90%, improving the working environment. If large pieces of rubber get stuck, simply reversing the motor will discharge them, eliminating the need for manual cleaning.
The flexible screw conveyor for rubber granules, through its rational design and performance, has become a commonly used device in rubber granule conveying. It offers flexibility in material selection, component matching, and types, adapting to various production environments. The flexible conveying method solves the problems of rubber granules being easily broken, sticking together, or generating static electricity. The handheld type's flexibility meets the needs of small-scale, variable material movement, while the belt-driven type's stability supports continuous operation in large-scale industrial production. In practical applications, it helps factories improve production efficiency, reduce labor intensity, and make workshops cleaner and safer.
