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Powder Screw Feeder Conveyor can convey any powder to the packaging machine and food processing destination. It adopts the principle of spiral feeding and can convey in an inclined, horizontal or vertical manner. It is suitable for different scenarios and is made of stainless steel and carbon steel.
The Powder Screw Feeder Conveyor uses internal rotating screw blades to propel materials, enabling uniform, precise, and continuous feeding of powders. Its fully enclosed design effectively prevents dust emissions, reducing material loss and workshop pollution. It features a compact structure, small footprint, stable operation, and low noise. It can be flexibly integrated with production lines, mixing equipment, and screening equipment. The conveying speed can be adjusted according to production needs, allowing for precise control of the output.
As a common device for conveying powder materials, the Powder Screw Feeder Conveyor features a sealed structure to prevent dust leakage and a variable pitch design to solve the problem of material slugging. It is suitable for continuous powder batching in a variety of industries.
Compact Structure and Small Footprint: Flexible and adaptable to various space layouts, it can be easily installed and used in both small workshops and complex production lines.
Stable and Adjustable Conveying Capacity: By adjusting the screw shaft speed, the powder conveying volume can be precisely controlled to meet diverse production needs. When used with a silo at the inlet of a tubular conveyor, it provides continuous and stable feeding, preventing material interruptions or accumulation, and ensuring continuous production.
Excellent Sealing Performance: Effectively prevents powder leakage, reduces environmental pollution, ensures a clean working environment, and minimizes material loss.
Customizable: A silo can be added to the feed port for convenient operation. We also support multi-point unloading, allowing multiple outlets to be added to the pipe.
The Powder Screw Feeder Conveyor uses a rotating screw shaft to drive blades, propelling powder materials axially under the influence of gravity and friction. Once loaded into a fixed trough, the material does not rotate with the screw due to its own gravity and friction with the trough walls. Instead, it slides forward solely under the axial component of the blades' normal thrust, achieving continuous conveying.
Powder Screw Feeder Conveyor consists of core components such as drive unit, screw shaft, screw blades, casing, feed port, discharge port and bearing system. The powder is continuously transported along the axial direction through the rotation of the screw shaft.
Spiral shaft: It is the core component of the conveyor, runs through the entire length of the conveyor, and plays the main role in conveying materials.
Spiral blade: It is fixed on the spiral shaft and is the key component for pushing the material along the axis direction of the conveyor.
Bearing: It is used to support and fix the spiral shaft, reduce friction, and ensure the smooth rotation of the spiral shaft.
Transmission device: It is usually composed of a motor, a reducer, etc., which is used to drive the rotation of the spiral shaft.
Support frame: used to support the structure of the entire conveyor to ensure the stability and safety of the conveyor during operation.
Feed port and discharge port: used for the entry and exit of materials. The feed port is usually located at one end of the conveyor, while the discharge port is located at the other end, which facilitates the smooth transportation of materials.
| LS Model | 100 | 160 | 200 | 250 | 315 | 400 | 500 | 630 | 800 | 1000 | 1250 |
| GX Model | 200 | 250 | 300 | 400 | 500 | ||||||
| Spiral diameter（mm） | 100 | 160 | 200 | 250 | 315 | 400 | 500 | 630 | 800 | 1000 | 1250 |
| Pitch（mm） | 100 | 160 | 200 | 250 | 315 | 355 | 400 | 450 | 500 | 560 | 630 |
| Rotating speed（r/min） | 140 | 120 | 90 | 90 | 75 | 75 | 60 | 60 | 45 | 35 | 30 |
| Throughput QΦ=0.33（m3/h） | 2.2 | 7.6 | 11 | 22 | 36.4 | 66.1 | 93.1 | 160 | 223 | 304 | 458 |
| Power Pd 1=10m（KW） | 1.1 | 1.5 | 2.2 | 2.4 | 3.2 | 5.1 | 4.1 | 8.6 | 12 | 16 | 24.4 |
| Power Pd 1=30m（KW） | 1.6 | 2.8 | 3.2 | 5.3 | 8.4 | 11 | 15.3 | 25.9 | 36 | 48 | 73.3 |
| Rotating speed（r/min） | 120 | 90 | 75 | 75 | 60 | 60 | 45 | 45 | 35 | 30 | 20 |
| Throughput QΦ=0.33（m3/h） | 1.9 | 5.7 | 18 | 18 | 29.1 | 52.9 | 69.8 | 125 | 174 | 261 | 305 |
| Power Pd 1=10m（KW） | 1.0 | 1.3 | 2.1 | 2.1 | 2.9 | 4.1 | 4.7 | 6.8 | 9.4 | 14.1 | 16.5 |
| Power Pd 1=30m（KW） | 1.5 | 2.3 | 4.5 | 4.5 | 7 | 8.9 | 11.6 | 20.4 | 28.3 | 42.2 | 49.5 |
| Rotating speed（r/min） | 90 | 75 | 60 | 60 | 45 | 45 | 35 | 35 | 30 | 20 | 16 |
| Throughput QΦ=0.33（m3/h） | 1.4 | 4.8 | 15 | 15 | 21.8 | 39.6 | 54.3 | 97 | 149 | 174 | 244 |
| Power Pd 1=10m（KW） | 0.9 | 1.2 | 1.9 | 1.9 | 2.5 | 3.4 | 4.3 | 5.4 | 8.1 | 9.5 | 13.3 |
| Power Pd 1=30m（KW） | 1.2 | 2.2 | 3.8 | 3.8 | 5.4 | 6.8 | 9.2 | 16 | 24.4 | 28.6 | 39.9 |
| Rotating speed（r/min） | 75 | 60 | 45 | 45 | 35 | 35 | 30 | 30 | 20 | 16 | 13 |
| Throughput QΦ=0.33（m3/h） | 1.2 | 3.8 | 11 | 11 | 17 | 31.7 | 46.5 | 73.0 | 99.3 | 139 | 199 |
| Power Pd 1=10m（KW） | 0.75 | 1.1 | 1.6 | 1.6 | 2.1 | 3.1 | 3.7 | 4.6 | 5.7 | 7.7 | 11 |
| Power Pd 1=30m（KW） | 1.1 | 1.8 | 3.4 | 3.4 | 4.4 | 5.6 | 8 | 14 | 16.7 | 23.2 | 33 |
The Powder Screw Feeder Conveyor can flexibly change the installation angle and conveying direction. The conveyors we provide are mainly divided into three types: horizontal conveying, inclined conveying and vertical conveying.
Horizontal screw conveyor: Installation angle: 0°~15° suitable for short-distance conveying, uniform feeding, mixing and stirring, usually using U-shaped trough or tubular structure, easy to maintain, suitable for powders with good fluidity.
Inclined screw conveyor: Installation angle: 15°~45° suitable for powder conveying that requires a certain lifting height, such as from the ground to the silo, mixer feeding, etc. Compared with horizontal + vertical combined conveying, the inclined structure is more compact. It can convey slightly agglomerated powders (such as premixes, feed additives).
Vertical screw conveyor installation angle: 90°suitable for powder conveying that requires a large height lift (such as tower production lines, high-rise silo feeding). Suitable for factory layouts with limited space, the pipeline design can prevent powder from flying, meeting environmental protection requirements.
Powder Screw Feeder Conveyor is widely used in many fields due to its advantages of fast transportation and airtight dust prevention. It is used to transport cement and lime powder in the building materials industry, add pigments and additives in the chemical industry, and transport flour and starch in the food industry, adapting to different working conditions.
Building materials industry: powder screw feeder is often used to transport raw materials such as cement and limestone powder to realize the automated feeding process and improve production efficiency.
Food processing: spiral feeder conveyors are used to convey powdered food raw materials such as flour, powdered sugar, and grains to ensure continuous feeding of food production lines, production efficiency, and food quality.
Chemical manufacturing: powder spiral feeder conveyors are often used to convey chemical raw materials or finished powders, such as granular fertilizers, plastic granules, etc., to meet the conveying needs of different process flows.
Pharmaceuticals: commonly used to convey pharmaceutical raw material powders or granules to ensure accurate feeding in the pharmaceutical production process and ensure production quality and safety.
Agricultural field: can be used to convey granular agricultural products such as feed and seeds to improve the efficiency of feed processing and seed processing.
The selection of a Powder Screw Feeder Conveyor should be determined based on the characteristics of the powder. For powders that easily absorb moisture and agglomerate, choose a model with heating/stirring. For powders that are prone to abrasion, choose a model with wear-resistant liners. For food-grade powders, choose 304 stainless steel to ensure adaptability and conveying stability.
Lightweight, loose powders: These are easily dusty, have poor flowability, and are prone to bridging and arching. Selection criteria: Use variable pitch screw conveyors, enlarge the feed hopper to break up arches, and incorporate an anti-bridging mixing device; prioritize fully enclosed tubular models with low-speed variable frequency speed control to prevent material drift and segregation.
Heavy, dense powders: These are high in specific gravity, have good flowability, high hardness, and are prone to wear. Selection criteria: Use thickened, wear-resistant blades made of carbon steel/manganese steel; choose large-diameter, large-pitch models to increase conveying capacity; provide dustproof seals for bearings to reduce wear from hard powder intrusion.
Moisture-absorbing, agglomerating powders: These materials easily agglomerate when damp, adhere to the inner wall, and have unstable flowability. Selection criteria: Equip with anti-stick polished screw blades; the machine body can be equipped with a drying and insulation structure; shorten the feed section length and add a vibration arch-breaking device; not suitable for long-distance conveying.
Building material companies, due to production line upgrade requirements, need to stably convey ultrafine fly ash, a lightweight material that is easily dusty, has poor flowability, and is prone to bridging and arching. Our company customized a tubular Powder Screw Feeder Conveyor for them, with a conveying length of 6m. The parts in contact with the material are made of 304 stainless steel, while the frame is made of corrosion-resistant carbon steel. It is equipped with a variable pitch screw and an arch-breaking agitator, along with a variable frequency speed control system to effectively prevent material drift, segregation, and blockage. After the project was put into operation, the equipment operated stably, with an actual output of 15t/h, zero dust spillage, meeting environmental requirements, and receiving high praise from the customer.
DaHan Machinery Manufacturing Co., Ltd. boasts mature technological accumulation and rich project experience. The company specializes in a full range of screw conveyor equipment, covering horizontal, inclined, and vertical Powder Screw Feeder Conveyors. Equipment capacity ranges from 0.5 to 20 tons/hour, widely adaptable to powder conveying scenarios in over thirty industries including chemical, food, metallurgy, and environmental protection. We offer non-standard customization services with key advantages: we can tailor equipment to customer's specific working conditions, incorporating a dedicated water-cooled spiral structure to easily handle high-temperature material conveying challenges; supporting multi-point feeding and precise material distribution; and perfectly integrating with upstream and downstream production equipment to meet the operational needs of the entire production line.
Powder Screw Feeder Conveyors, with their advantages of closed conveying, stable operation, and strong adaptability, have become the preferred equipment for powder material conveying. Flexible model selection based on material characteristics is available, supporting water cooling, multi-point feeding, and non-standard customization, and seamless integration with upstream and downstream production equipment.
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