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Pepper Powder Screw Conveyor features a fully enclosed tubular structure, effectively preventing pepper powder spillage and cross-contamination, ensuring a clean and hygienic production environment. This equipment supports both horizontal and vertical conveying, with horizontal unit lengths up to 30 meters, meeting the needs of long-distance process layouts; vertical conveying heights can reach 6 meters.
The Pepper Powder Screw Conveyor's material-contacting parts are available in 304 or 316 food-grade stainless steel, with a mirror-polished surface for a smooth, seamless experience. We specialize in custom services and can flexibly adjust parameters such as inlet and outlet locations and frame height to suit your site conditions. To enhance ease of movement and positioning, rollers can be added for flexible relocation. Furthermore, the equipment supports an angled design, adapting to specific installation angles to ensure seamless integration with upstream and downstream equipment.
The unique nature of pepper powder conveying stems from the multiple challenges presented by its unique material properties. Despite its fine particles and high fluidity, pepper powder is prone to dust generation, and its pungent odor requires strict odor control. Furthermore, food-grade applications require extremely high levels of hygiene and cleanliness.
Highly susceptible to dust generation: Pepper powder is light and fine, easily generating dust during conveying. This not only causes material loss, but also pollutes the work environment and poses a risk of dust explosions.
Susceptible to adhesion: Powder easily adheres to the inner walls of equipment due to static electricity or grease residue, leading to cross-contamination, bacterial growth, and reduced conveying efficiency.
Highly demanding hygiene requirements: Equipment must meet food-grade hygiene standards, be made of safe and non-toxic materials, and have a structure that eliminates unsafe corners for easy and thorough cleaning.
Maintaining the purity of flavor: The conveying process must ensure that the material is not contaminated or deteriorated by heat to preserve the pepper's original spicy flavor and aroma.
With its customized design, the Pepper Powder Screw Conveyor offers significant advantages in spice conveying. Made of food-grade 304/316L stainless steel, it meets hygiene standards, is corrosion-resistant, and easy to clean. Its fully sealed structure prevents dust and odor from spreading, minimizing material loss.
Blade Material: Made of 304 stainless steel or polymer composite, the surface undergoes arc hardening, increasing wear resistance by over three times.
Sealing Structure: The fully enclosed U-shaped trough with silicone seals ensures a dust leakage rate of less than 0.01 mg/m³, meeting food-grade hygiene standards.
Anti-Stick Design: The blade surface is coated with an HNT nano-coating, reducing powder residue and increasing cleaning efficiency by 40%.
The tilt angle of a conventional Pepper Powder Screw Conveyor generally does not exceed 45°, but with special designs, it can achieve 90° vertical conveying.
Shafted Tube Screw Conveyors: Maximum tilt angles of approximately 45° are suitable for conveying general pepper powder.
Shaftless Tube Screw Conveyors: Maximum tilt angles of approximately 30° are suitable for pepper powders with high moisture content and moisture content.
Shafted U-Shaped Screw Conveyors: Tilt angles generally range from 20° to 30°, with some designs potentially reaching 35° to 50°, depending on the flowability of the pepper powder.
A screw conveyor uses a rotating screw shaft to drive the blades, utilizing friction between the material and the inner wall of the trough to achieve axial propulsion. Its operation can be divided into three stages.
Feeding Stage: Pepper powder is evenly fed into the trough via a rigid impeller feeder, preventing blockage or accumulation caused by flow fluctuations.
Conveying Stage: The spiral blades rotate at a speed of 15-50 rpm, exerting a normal thrust on the powder. This axial force propels the material along the conveying direction, achieving a conveying capacity of 3-8 tons per hour.
Discharging Stage: A reverse helical structure or variable pitch design is used at the discharge end to prevent powder accumulation at the end. Some equipment is also equipped with an air lock to ensure leak-free conveying.
The Pepper Powder Screw Conveyor has a wide range of applications, primarily focusing on the food and condiment processing sectors. In pepper processing, it can connect to crushing equipment and grinders to convey coarse powder, while also accurately delivering fine powder to mixers and automatic packaging machines.
Raw Material Pretreatment: The crushed coarse pepper powder is conveyed to the fine grinder. A sealed design prevents dust contamination before grinding, ensuring powder purity.
Mixed Seasoning: The pepper powder is precisely conveyed to the mixer, where it is mixed with salt, cumin, and other spices according to the desired ratio. Frequency conversion control ensures ingredient accuracy and improves the consistency of seasoning quality.
Packaging and Filling: The mixed finished pepper powder is conveyed to the automatic packaging machine. A stable conveying rhythm prevents metering errors during packaging and reduces wear and tear on packaging equipment caused by dust.
Pepper powder screw conveyor selection should be closely aligned with material characteristics and production scenarios. Prioritize 304/316L stainless steel based on hygiene standards. Determine the conveying volume and screw diameter based on production capacity. Consider horizontal or inclined installation based on the workshop layout.
Short-distance conveying (<6 meters): Tubular screw conveyors are compact and suitable for point-to-point conveying within the workshop. For example, a large condiment company uses a 1.5-meter length to convey 5 tons of pepper powder per hour, while taking up minimal floor space.
Long-distance conveying (>6 meters): Intermediate hanging bearings are required, but care must be taken to prevent material carryover. A segmented design, with each segment limited to 3-4 meters, can be used to reduce the risk of blockage.
Flowability: Pepper powder has small particle size and poor flowability, requiring the use of solid spiral blades with a pitch of 0.8 times the blade diameter to enhance propulsion. Temperature Control: If the conveying process involves drying, high-temperature-resistant bearings and temperature sensors should be installed to prevent deformation of the casing due to thermal expansion and contraction.
Vertical Lift: Vertical screw conveyors achieve vertical conveyance of pepper powder by reducing the pitch and increasing the speed, reaching heights of up to 6 meters.
In addition to conveying pepper powder, the Pepper Powder Screw Conveyor is also suitable for conveying a variety of powdered and finely granulated spices and food ingredients, such as Sichuan pepper powder, star anise powder, and cumin powder; powdered ingredients such as flour, starch, and milk powder; and seasonings such as coffee powder, cocoa powder, and powdered sugar.
Pepper powder screw conveyors are commonly made of food-grade materials. The body and spiral blades are often made of 304 stainless steel, which is corrosion-resistant and easy to clean, meeting the hygiene requirements of the food and seasoning industries. For special needs, 316L stainless steel can be selected for improved corrosion resistance, making it suitable for materials containing trace amounts of corrosive components.
Prices for pepper powder screw conveyors start at $1,200, depending on the material, specifications, and configuration. The basic food-grade 304 stainless steel model is affordable; upgrading to 316L stainless steel or adding variable speed control or vibration anti-blocking devices will increase the price accordingly. Vertical models are slightly more expensive than horizontal models due to their specialized design.
Through targeted structural optimization and material selection, the Pepper Powder Screw Conveyor addresses the challenges of spice powder conveying, such as dust, contamination, and material jamming. It is a key piece of equipment for ensuring food hygiene and safety and a significant contributor to improving production line efficiency.
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