Preparations Before Disassembly
Disassembling a single screw pump is like performing surgery; preparation is crucial for success. First, ensure the pump is completely stopped and the power is disconnected, allowing the system to depressurize to a safe level. Prepare specialized tools such as a rubber mallet, puller, and Allen wrench. Check the pump body connections for corrosion or deformation; spray a loosening agent if necessary. Remember: safety first; wear protective gloves and goggles.
Stator and Rotor Separation Techniques
Disconnect: First, remove the inlet and outlet flange bolts, being careful to retain the sealing gaskets.
Remove the Rotor: Gently tap the shaft end with a rubber mallet, and slowly pull out the rotor using a puller.
Remove the Stator: Rotate the stator housing, using the elastic deformation of the stator rubber to gradually detach it.
Cleaning and Inspection: Promptly clean away any residual media, check for wear, and mark the areas where wear is present.
Precautions During Operation
Stop immediately if you hear a metallic scraping sound-this may be a sign of abnormal jamming between the rotor and stator. Do not use flame heating or forceful striking; high temperatures will damage the rubber stator. After disassembly, apply anti-rust oil to the mating surfaces and arrange the components in the correct order. Special reminder: After disassembly, the rubber stator should be laid flat for storage to avoid deformation caused by prolonged hanging.
