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U-Shaped Screw Conveyor for Recycled Plastic Bottles utilizes a U-shaped trough and a wide-spaced spiral structure to prevent bottle jamming and tangling. It can smoothly complete horizontal or slightly inclined conveying. Specifically optimized for the irregular shape, moisture content, and impurities of recycled plastic materials, it features improvements in structural design, wear resistance, and drainage. A single unit can reach a horizontal length of 30 meters. Customization is available to suit different production sites.
The U-Shaped Screw Conveyor for Recycled Plastic Bottles is specifically designed to perfectly adapt to the complex characteristics of waste plastics. Its large-diameter, low-speed structure prevents irregular bottle pieces from jamming, and the hardened blade edges enhance wear resistance and lifespan. Addressing the problem of label wrapping, a shaftless spiral design eliminates the risk of shaft jamming. A fully sealed U-shaped channel with an openable cover effectively prevents dust and odors and allows for flexible placement in confined spaces such as crushers and washing lines. Wear-resistant liners and dustproof bearings in key areas ensure continuous and stable operation 24 hours a day under heavy loads. Customized design and production are also supported, allowing for customization of size, output, and height to integrate with upstream and downstream equipment.
We offer both shaftless and shafted types of U-Shaped Screw Conveyors for Recycled Plastic Bottles, each suitable for different applications. Choose the type that best suits your needs.
Shafted U-Shaped Screw Conveyor: Equipped with a central screw shaft and blades, it boasts strong conveying thrust and stable operation. Suitable for conveying clean, non-entangled, and long-strip-free plastic bottle fragments and granules, it offers high conveying efficiency and is less prone to deviation, meeting the stable conveying needs of conventional crushed materials in plastic recycling lines.
Shaftless U-Shaped Screw Conveyor: Utilizing a shaftless screw structure, it eliminates central shaft interference, preventing entanglement and material jamming. Particularly suitable for conveying whole plastic bottles, long strips of plastic, films, and other easily entangled materials. Its large trough space and excellent throughput allow for smooth conveying of whole bottles and large pieces of waste.
The U-Shaped Screw Conveyor for Recycled Plastic Bottles mainly consists of a drive motor, reducer, screw body, U-shaped trough, inlet, outlet, and frame. Shafted models are equipped with a central shaft and helical blades, providing stable conveying and high thrust. Shaftless models feature a shaftless helical design, preventing tangling and offering excellent throughput. The U-shaped trough opening is designed for easy cleaning and maintenance, and the overall structure is robust, durable, and well-sealed, allowing for the smooth transport of plastic bottles, bottle flakes, and waste plastics containing impurities.
| Specification | Main technical performance | drive unit | drive unit | Weight (kg) | |||
| diameter | length (m) | Output (cement) t/h | speed(min) | reducer | electric motor | ||
| model | speed ratio | Power(kw) | |||||
| U 200 | -10 | 9 | 60 | ZQ250 | 23.34 | 1.1 | 726 |
| U 200 | -20 | 9 | 60 | ZQ250 | 23.34 | 1.5 | 1258 |
| U 250 | -10 | 15.6 | 60 | ZQ250 | 23.34 | 2.2 | 960 |
| U 250 | -20 | 15.6 | 60 | ZQ250 | 23.34 | 3 | 1750 |
| U 300 | -10 | 21.2 | 60 | ZQ350 | 23.34 | 3 | 1373 |
| U 300 | -20 | 21.2 | 60 | ZQ350 | 23.34 | 4 | 2346 |
| U 400 | -10 | 51 | 60 | ZQ400 | 23.34 | 5.5 | 1911 |
| U 400 | -20 | 51 | 60 | ZQ500 | 23.34 | 11 | 2049 |
| U 500 | -10 | 87.5 | 60 | ZQ400 | 23.34 | 7.5 | 2381 |
| U 500 | -20 | 87.5 | 60 | ZQ650 | 23.34 | 18.5 | 5389 |
| U 600 | -10 | 134.2 | 45 | ZQ750 | 23.34 | 22 | 3880 |
| U 600 | -10 | 134.2 | 45 | ZQ850 | 23.34 | 55 | 7090 |
The U-Shaped Screw Conveyor for Recycled Plastic Bottles primarily relies on a motor and reducer to provide power, driving the helical blades to rotate continuously within the U-shaped trough. Shafted models use a central shaft to drive the blades and push the material, while shaftless models rely on the shaftless helical structure itself for conveying. After plastic bottles or bottle flakes enter the trough through the inlet, they move forward along the trough under the thrust of the helical blades, completing horizontal or slightly inclined conveying.
An environmental technology company specializing in waste plastic recycling has a daily processing capacity of 50 tons of waste PET beverage bottles. In their washing and recycling production line, crushed PET bottle flakes need to be conveyed from the crusher outlet to the next stage screw dewatering machine. However, the original conveying equipment frequently encountered two major problems: firstly, a large amount of label paper mixed in with the bottle flakes would entangle the central shaft, resulting in at least 2-3 shutdowns per week for cleaning; secondly, the bottle flakes after wet washing had a high moisture content, leading to severe water accumulation during conveying, causing material slippage and increasing the energy burden of the subsequent drying process.
To address this pain point, we customized a U-shaped screw conveyor for recycling plastic bottles. The equipment adopts a shaftless screw structure, completely eliminating the possibility of label paper entanglement on the central shaft. A specially designed filter screen and water collection trough at the bottom of the trough simultaneously filter out a large amount of free water during conveying. The thickened U-shaped trough and openable cover effectively block damp odors from the washing workshop and facilitate daily inspection and cleaning.
The U-Shaped Screw Conveyor for Recycled Plastic Bottles leverages its advantages to be used in multiple stages, working in conjunction with various upstream and downstream equipment.
Crusher:It handles the automated feeding of the crusher. The conveyor smoothly transports whole recycled plastic bottles and bottle fragments to the crusher's feed inlet, eliminating the need for manual handling and preventing material accumulation and blockage, achieving integrated "conveyor-crusher" production line operation.
Color Sorter:It is responsible for material transfer before and after color sorting. The conveyor evenly transports the initially sorted plastic bottles or bottle fragments to the color sorter's feed end, ensuring stable feeding and even distribution, improving color sorting accuracy. Simultaneously, it transports the qualified and unqualified materials after color sorting to their respective bins, achieving simultaneous "conveyor-color sorter-diversion."
Belt Conveyor: Combining a U-shaped screw conveyor with a belt conveyor for recycled plastic bottles leverages the strengths of each, adapting to long-distance, multi-station plastic recycling needs. The screw conveyor handles centralized feeding at the front end, small-angle conveying, and transfer of easily tangled materials, while the belt conveyor handles long-distance horizontal or large-angle conveying. The seamless integration of the two allows plastic bottles to be transported from the sorting area of the recycling station to the crushing, washing, or storage areas.
DaHan Machinery is committed to providing high-speed, durable screw conveyor solutions to global customers. For the waste plastic recycling sector, we offer U-shaped screw conveyors in both carbon steel and 304/316 stainless steel series, fully meeting the diverse needs for cost control and corrosion resistance under different working conditions. All equipment supports deep non-standard customization, and can be tailored to specific material characteristics, site layout, and process requirements. We have a complete quality control system and a professional after-sales team, and our products are exported to many countries and regions worldwide, including Southeast Asia, the Middle East, Africa, Europe, and America.
The U-Shaped Screw Conveyor for Recycled Plastic Bottles boasts core advantages such as anti-tangling, dehydration, and wear resistance. Its targeted design effectively solves common problems in waste plastic conveying, including blockages, tangling, and water accumulation. It serves as a reliable transmission device connecting upstream and downstream processes in plastic recycling production lines.
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