Seasoning screw conveyor
Wednesday November-19 2025 17:49:02
Seasoning screw conveyors use rotating helical blades within a pipe to stably transport bulk materials such as seasoning powders and granules to packaging machines or integrated mixing systems. Screw conveyors are typically 3-12 meters long, with diameters ranging from 100-400 mm, and rotational speeds from 25-60 rpm. They are usually made of 304 stainless steel or carbon steel, offering wear and corrosion resistance, suitable for both food-grade and industrial applications. Conveying capacity depends on diameter, rotational speed, and material characteristics, generally ranging from 0.5 to 5 tons per hour. They can be used for standalone conveying or as a key component in seasoning recycling and feed mixing systems, ensuring continuous production line operation.
Seasoning Screw Conveyor Design
From its materials and functions to its design considerations for cleaning and preventing contamination of applicable spices, the Seasoning Screw Conveyor is a top choice for conveying seasoning materials.
Hygiene and Cleanliness: Spices are often in powder or fine granule form, easily leaving residues, absorbing moisture, and breeding microorganisms. The equipment features a design without dead corners. The screw and U-shaped trough should have large-radius rounded corners to ensure smooth material discharge without residue. Quick-opening covers and easily disassembled screw assemblies facilitate rapid and thorough cleaning.
Material: Parts in direct contact with materials are made of food-grade stainless steel, with a smooth, corrosion-resistant surface that prevents rust contamination from oils, acids, or salts in the spices. The material also possesses sufficient hardness and abrasion resistance to withstand potential wear from some hard spices.
Prevention of Contamination and Deterioration: Spices are prone to absorbing moisture and clumping, volatile flavors, or cross-contamination. The conveyor is designed with a fully sealed structure to prevent external moisture and contaminants from entering, while locking in aroma. For powders prone to static electricity, a grounding design can be implemented to prevent adsorption. For conveying multiple spices, an online cleaning system eliminates batch-to-batch cross-contamination.
Special Features: Variable frequency speed control motors can be used to precisely control the conveying volume to match the production line cycle. For spices prone to clumping, a flexible tapping device can be added to the outside of the tank, or a food-grade non-stick coating can be applied to the inner wall. In sections requiring mixing, a spiral blade with stirring function can be designed to achieve integrated conveying and light mixing operations.
What types of seasoning screw conveyors are available?
Seasoning screw conveyors are available in horizontal and inclined types. Both types can be customized with thickened blades, stainless steel construction, and anti-stick coatings to suit the characteristics of the seasonings. In production, horizontal conveyors are suitable for continuous batching processes, while inclined conveyors are primarily used for lifting and conveying between silos and mixers or packaging machines.
Horizontal screw conveyors allow seasonings to move smoothly along the pipe during transport, with minimal impact from gravity. This effectively reduces material stratification and scattering, and helps maintain the uniformity of the seasonings. Common specifications include Φ200~Φ500mm screw blades, conveying lengths of 5~20m, conveying capacities of approximately 1~10t/h, and speeds typically of 20~40r/min.
Inclined screw conveyors are suitable for processes with an upward angle, typically ≤20°. As the angle increases, the friction between the material and the inner wall of the trough increases, leading to a decrease in conveying capacity and an increase in power consumption. To overcome gravity, higher speeds and motor power are required, and the risk of breakage for fragile seasonings is also higher. Conveying capacity: approximately 0.8~8 t/h; Motor power: 1.5~5.5 kW.
Key Features of Seasoning Screw Conveyor
The Seasoning Screw Conveyor not only achieves uniform conveying but also integrates mixing, sealing, and cleaning functions. The following are some of the equipment's advantages:
High Conveying Uniformity: The equipment uses a spiral blade design, allowing seasoning materials to be smoothly propelled along the pipeline while also providing a light mixing function, ensuring sufficient contact between the seasoning and the main ingredients, improving seasoning uniformity.
Good Sealing Performance: The conveying process typically employs a tubular structure, combined with sealing end caps and packing to prevent seasoning dust from flying and material leakage, meeting food processing hygiene requirements.
Compact Structure and Flexible Installation: The screw conveyor has a simple overall structure, occupies a small area, and can be installed horizontally, inclined, or even vertically according to the factory layout, facilitating integration with existing production lines.
High Adaptability: It can convey powdered, granular, or small block seasonings, and the material flow rate can be controlled by adjusting the screw speed, achieving precise batching.
Easy to clean and maintain: Most equipment features a detachable design, making the screw shaft and tube easy to clean, meeting food hygiene standards, while maintaining low maintenance costs and ensuring stable and reliable operation.
Seasoning screw conveyor applications
Seasoning screw conveyors can transport ingredients such as salt, sugar, pepper, chili powder, monosodium glutamate (MSG), spice granules, and some moist or semi-dry seasoning pastes. In feed production lines, it works in conjunction with mixers to evenly incorporate additives such as oils and vitamins into the main ingredients; in food processing, it is paired with mixing tanks to quantitatively add seasonings such as salt and MSG; in the building materials industry, it is often used in conjunction with dry mortar stations to stably transport cement admixtures.
Screw seasoning conveyors transport bulk seasonings from one location to another. Our factory offers a variety of specifications and material options to adapt to different material characteristics and production needs, and also provides customized design and installation services. The screw conveyor has a simple structure, facilitating regular inspection of bearings, blades, and transmission devices to ensure long-term stable operation; the screw blades and tube can be disassembled for thorough cleaning. Its overall design balances efficiency, reliability, and ease of maintenance, making it an indispensable piece of equipment in modern food processing lines.
