Pneumatic Paddy Husker

Pneumatic Paddy Husker - Gentle and Efficient Hull Removal

Husking: The First Critical Step in Rice Milling
The Pneumatic Paddy Husker is responsible for the initial processing step: removing the inedible outer husk from the paddy rice kernel to produce brown rice. This stage requires a delicate balance – applying sufficient force to crack and strip the husk without damaging the underlying brown rice kernel. Shijiazhuang Xinlu Technology Co., Ltd. utilizes pneumatic technology to achieve this balance effectively.

Principle of Pneumatic Husking: This method employs rubber rollers running at differential speeds. One roller rotates significantly faster than the other. Paddy grains are fed between these rollers. The speed difference creates a shearing action. Critically, the rollers are not pressed together with rigid force. Instead, a precisely controlled pneumatic system applies consistent, adjustable air pressure to the roller bearings. This allows the rollers to exert a controlled, yielding pressure on the grains. When a hard object like a stone passes through, the pneumatic system allows the rollers to momentarily separate, minimizing damage to the rollers and the machine, unlike rigidly sprung systems.

Key Components & Advantages: Rubber Rollers: High-quality, durable rubber compounds are essential for effective husking and long life. Roller hardness and surface texture are selected based on paddy variety and condition. Pneumatic Pressure System: Comprising air compressor, pressure regulator, gauges, and air cylinders. This system provides smooth, consistent, and easily adjustable pressure, crucial for optimizing husking efficiency (high hulling yield) and minimizing broken brown rice. Feed Control Mechanism: Ensures an even, monolayer flow of paddy into the nip of the rollers for uniform treatment. Husk Aspiration: Integrated suction removes the light husks immediately after separation to prevent re-contact with brown rice.

Optimizing Husker Performance: Pressure Adjustment: Finding the optimal air pressure is critical – too low results in incomplete husking (high paddy content in output), too high increases broken brown rice. Roller Gap Setting: Must be periodically checked and adjusted as rollers wear. Roller Speed Differential: Fixed or adjustable depending on model; influences the shearing intensity. Feed Rate: Must be consistent and matched to the machine's capacity to avoid roller slippage or uneven husking. Paddy Moisture Content: Significantly impacts huskability; optimal moisture ranges are typically 14-15%.

Importance for Mill Yield and Quality: The husking stage has a profound downstream effect. High husking efficiency (minimal unhusked paddy) reduces the load on the paddy separator. Minimizing broken kernels at this stage directly contributes to the final head rice yield after whitening and polishing. Gentle husking preserves the bran layer integrity on the brown rice, which is important for nutritional value and can influence polishing efficiency. The self-protecting nature of pneumatic systems reduces downtime and maintenance costs associated with roller damage from foreign matter.

Shijiazhuang Xinlu Technology Co., Ltd. designs its Pneumatic Paddy Huskers with a focus on robustness, precise pneumatic control, ease of roller change and adjustment, and efficient husk removal, forming a reliable foundation for the entire milling process.