Germany AKW swirl sub: A particle with getting through import of natural downward spiral, not only can reduce the wear of the feed head, but also can reduce the stream, thus extending the life of the entrance. Since the scroll open entrance into the cyclone feed will not be as a direct impact of the scroll type detectors like other designs. Thus greatly reducing the scroll probe wear and extend the limited life of the cyclone. Scroll probe inlet head and life in general is the same. Imported polyurethane material, non-toxic and environmentally friendly, good toughness and resistance to stress. Greatly increased cost. Reasonable scroll involute, greater capacity, higher efficiency. Separation more effective. Reduce stress, increase the service life. Import clamp connection, effectively prevent connector deformed easier replacement parts. The test results, effectively extending the overall life of the cyclone more than 25%.