Pneumatic Rice Paddy Husker

Pneumatic Rice Paddy Husker

Shijiazhuang Xinlu Technology Co., Ltd. – Technical Overview of Pneumatic Rice Paddy Husker

The Pneumatic Rice Paddy Husker is a specialized machine designed to efficiently remove the indigestible outer husk from paddy rice, a process fundamental to rice milling. This equipment utilizes a combination of mechanical pressure and controlled airflow to achieve high husking efficiency while minimizing kernel breakage. Shijiazhuang Xinlu Technology Co., Ltd. manufactures these huskers with a focus on reliability, adjustable operation, and gentle handling of the grain to preserve the integrity of the brown rice kernel.

The core husking mechanism involves two rubber rollers, typically referred to as the "fast roll" and the "slow roll." These rolls are mounted parallel to each other with a small, precisely adjustable gap between them. They rotate in opposite directions but at different peripheral speeds. The paddy rice is fed evenly into the gap between these rollers. As the grains pass through, the differential speed and the pressure applied by the rollers create a shearing and rubbing action on the paddy. This action cracks and loosens the husk without applying excessive crushing force that could break the underlying brown rice kernel. The husk, being loose and light, is then separated from the brown rice in the subsequent stage.

This is where the "pneumatic" aspect becomes crucial. Integrated directly with the husking unit is a powerful aspiration system. As the mixture of brown rice, unhulled paddy, and husks exits the roller gap, it is subjected to a controlled stream of air. The husks, also known as chaff, have a very low density and are easily lifted and carried away by this airflow. The air is typically drawn through a duct that leads to a cyclone separator or a central dust collection system, where the husks are collected for disposal or potential use as boiler fuel or animal bedding. The heavier brown rice and any unhulled paddy, being unaffected by the air stream, fall downward for collection and transport to the next processing stage, which is usually a paddy separator.

Key operational parameters in a pneumatic husker are the roll pressure and the gap between the rolls. These settings are adjustable and must be optimized based on the variety, moisture content, and size of the paddy being processed. Proper adjustment is critical for maximizing the husking efficiency—the percentage of paddy that is successfully dehulled—while keeping the broken rice percentage to a minimum. The rubber rolls themselves are consumable parts and require periodic replacement as they wear down over time. Modern huskers are designed to facilitate easy roll changes.

Additional features of these huskers from Shijiazhuang Xinlu Technology Co., Ltd. often include a feed control mechanism to ensure a steady and uniform flow of paddy into the rollers, which is essential for consistent performance. The machine frame is constructed from heavy-duty materials to absorb the vibrations from the rotating rolls and ensure stable operation. Safety features, such as overload protection and emergency stop buttons, are standard. By effectively performing the first major transformation in the milling process, the Pneumatic Rice Paddy Husker sets the stage for subsequent whitening and polishing operations, directly impacting the overall yield and quality of the final milled rice.