When the single screw pump after a long period of operation, staff should pay extra attention to the disassembly and replacement of pump parts, the following is a summary of the single screw pump disassembly and parts replacement of some notes for your reference.

1, the single screw pump before disassembly, must first be separated from the power end to prevent accidents.

2, disassemble the pump head. Remove the pump head fixing nut, remove the pump head. If there is no pump head and only the output flange of the single screw pump, you do not have to remove the flange, to facilitate the next - step to pull out the stator. Need to replace the stator when removing this flange.

3. Pull out the stator.

4. Disassemble the rotor, connecting rod, short section, seal box first remove the tee. Remove the steel wire snap ring or set screw. After exiting the national pillar pin anti-fall sleeve, remove the round pin. Next, you can separate the rotor, connecting rod. After the short section, you can take out the seal box. The mechanical seal must be careful, otherwise it is easy to cause the breakage of the dynamic and static ring.

5. Before re-installing the pump, the replacement and maintenance preparations should be done. Strictly check the quality of the parts to be installed, clean or not, check whether the appearance of damage.

6. The assembly steps are exactly the opposite of the disassembly steps.

7. When assembling the packing seal, pay attention to adjust the seal not to be too tight. To be gradually pressed after the trial feeding, to the media road with dripping is appropriate. If the mechanical seal, it should be noted that the dynamic and static ring without impurities, and grease. Static ring must be flat to install the hand seal box.

8. The rubber sheath should be checked at the connecting rod joint head for damage. Whether the cavity is full of grease.

9. When installing the stator, grease the rubber surface (including the rotor) to facilitate installation and trial operation.

10. When installing the pump head, tighten the nut symmetrically and evenly to ensure the seal with the stator end face.

In accordance with the above steps, customers can disassemble their own progressive cavity pump!