Three screw pump removal steps: 1, screw pump and motor from the emptying medium (to prevent the motor, toxic medium wounding); 2, remove the screw body discharge body; 3, remove the screw pump stator, if necessary, according to the direction of the pump shaft Shaft auxiliary; 4, remove the rotor and the intermediate shaft; 5, remove the shaft and shaft seal; 7, long-term screw pump, to be rust-proof treatment, the method is to use non-painted metal surface smear grease, including the shaft surface , Packing housing cavity, etc., and lubrication. Three screw pump assembly considerations: 1, the assembly screw pump parts should be carefully cleaned, check, damaged parts should be replaced; 2, the drive shaft twenty thousand joint assembly, you should check the ring is damaged, in the air Cavity filled with grease; 3, the correct installation of bearings so that the shaft rotation flexibility, no jamming phenomenon. 4, the shaft seal installation: packing box installed, the packing gland should be installed in the installation of the pressure bolt position within the window, easy to adjust the bolt wrench; 5, the body pressed tight, nut tightening should be uniform; 6, machinery Seal installation should be careful, the friction deputy face should be clean and coated with grease; 7, when installing the stator, with a lubricant smear rotor, stator cavity surface is conducive to stator installation; 8, the installation and assembly, the coupling installation deviation: △ Y≤0.2mm, Δα≤30 '.