First, the invention of nano pump In 1939, the French professor Mono invented this single screw pump, the world call Mono pump. In 1951, the Ni-Chi family Mr. Niier Knight plant in Germany and began mass-production Mono pump, its first-class quality and service praised by the majority of users, and is known as the Naimo pump. Second, the working principle Naimo pump is a positive displacement pump, the main working components from the stator and rotor. The rotor is a screw with a large lead, a large tooth height and a small internal thread diameter, while the stator is a flexible bushing with a double helix. The cooperating rotor and stator form a sealed chamber that is not connected with each other. When the rotor is in the stator During the internal rotation, the sealed cavity is axially moved from the suction end to the discharge end of the pump, and the medium is continuously delivered from the suction end to the discharge end in the cavity.