亚洲天堂国产成人在线黄色_欧美日韩呦女一区二区三区_原味视频在线www国产_丁香五月综合激情婷婷六月天_国产中文字幕在线久_97精品尹人久久大香线蕉_国产免费内射又粗又爽密桃视频_毛片一级免费视频_黄色一级视频大片_少妇愉情理伦片丰满丰满午夜电影

3GQGB screw asphalt pump, 3GQGB pitch screw pump is a positive displacement pump, a significant advantage of simple structure, small size, which allows smooth and reliable high-speed, small pressure pulsation, flow stability, low noise, high efficiency. The third series is the use of screw engagement of the screw principle, rely on rotating screw engaged with each other in the pump kit, the medium is conveyed in closed engagement cavity, continuously at a constant rate along the screw axis towards the outlet, the system provides a stable pressure.
3GQGB screw asphalt pump, 3GQGB pitch screw pump is mainly used for transmission of high viscosity lubricating liquid, often as asphalt, heavy fuel oil, gear pump heavy oil, heavy diesel oil, which has a heat pump inside the chamber and the insulation channels, allowing gas or liquid as the heat carrier, the general maximum working temperature ≤ 250 ℃. High viscosity media generally transported by heating the viscosity reduction, its viscosity is generally 3.0 ~ 760mm2 / s.