As the core equipment for cleaning granular materials, the wind screen cleaner can efficiently separate impurities from materials with the composite technology of “wind sorting + screen filtration” and is widely used in grain, oil, and miscellaneous grains.
Sesame seeds are small in size, light in density, and easily sticky on the surface. They are often used as food ingredients after cleaning. When using a wind screen cleaner to clean them, it is necessary to control the equipment parameters, operating procedures, and material pretreatment in a targeted manner. The core considerations can be divided into four aspects: equipment parameter adaptation, material pretreatment, operating specifications, and equipment maintenance.
1、Precisely Adjust Equipment Parameters: Avoid Screening Losses or Incomplete Impurity Removal.
The physical properties of sesame seeds dictate that the core parameters of the air screen cleaner require precise adjustment, focusing on controlling three key parameters: air speed, screen mesh, and vibration intensity. These are crucial for effective cleaning:
1. Air Separation Speed: Strictly maintain a low air speed to prevent qualified sesame seeds from being blown away.
Sesame seeds have a low suspension velocity. If the air speed is too high, qualified sesame seeds can be sucked away along with light impurities (such as broken leaves and dust), resulting in loss. If the air speed is too low, light impurities cannot be completely separated.
2、Screen Configuration: Match the sesame seed particle size to prevent leakage and clogging.
Sesame seeds are small and prone to clogging, so the screen mesh aperture, material, and structure must be precisely matched.
3、Vibration Intensity: Low frequency and small amplitude to minimize sesame breakage.
Sesame seeds have a brittle shell, and excessive vibration can easily cause breakage (especially for dry sesame seeds). Therefore, the screen vibration frequency and amplitude must be controlled.
2、Material pretreatment: reduce the difficulty of cleaning and protect equipment
If sesame seeds contain excessive moisture, clumps, or large impurities before cleaning, it can easily lead to screen clogging and unbalanced air separation. Therefore, two pre-treatment steps are necessary:
1. Controlling material moisture to prevent sticking and clumping. When sesame seeds have excessive moisture content, they tend to clump due to surface oil absorption, preventing them from passing through the sieve holes and causing them to stick to the sieve surface and the inner walls of the air duct.
2. Pre-cleaning large impurities to reduce equipment wear. If large impurities (such as straw, plastic sheets, and stones) are mixed with sesame seeds, they will not only clog the sieve but also wear the fan impeller or sieve frame.
3、Operational Standards: Control the entire process from “feeding in, running, to discharging”
（1）Uniform feeding: Avoid screen overload and material breakage. Sesame seeds are small, and fluctuating feed rates can easily lead to partial screen overload (material accumulation, making screening impossible) or material breakage (equipment idling, wasting energy).
（2）Real-time monitoring of cleaning results: timely parameter adjustments. Regular sampling and inspections are required during the cleaning process to prevent parameter drift that could lead to excessive impurities or increased waste.
（3）Grading and Collection: Preventing Mixing of Finished Products and Impurities
After cleaning, sesame seeds are separated into four categories: “Qualified Finished Products,” “Large Impurities,” “Minor Impurities,” and “Light Impurities.” These products are then collected through separate discharge ports.
4、Equipment Maintenance: Extending Lifespan and Ensuring Cleaning Stability
Given the unique characteristics of sesame seed cleaning, equipment requires targeted maintenance, focusing on components prone to contamination and clogging:
1. After each use: Thoroughly clean any remaining sesame seeds.
2. Regularly inspect vulnerable parts to prevent unexpected malfunctions.
The key to sesame seed cleaning is “light air flow, fine screens, low vibration, and rigorous cleaning.” This approach reduces losses by precisely matching equipment parameters, improves purity through pretreatment and standardized operation, and ensures equipment stability through targeted maintenance. Ultimately, the food-grade sesame seed cleaning standards of “impurity rate ≤ 0.1%, breakage rate ≤ 0.2%” are achieved.
Post time: Sep-02-2025
