Disassembly and installation steps of multi-stage pump in water conservancy industry

Category: Water pump knowledge

2024-07-10

Water industry multistage pumpThe removal and installation steps are important to ensure the normal operation and maintenance of the equipment. The removal and installation steps of the multi-stage pump involve multiple key steps and precautions to ensure the performance and service life of the pump. This process will be described in detail below to help operators better understand and implement it.

1. removal steps:

1. Preliminary preparation: close the inlet and outlet valves of the multi-stage pump, cut off the power supply, and ensure that the pump body has no pressure.

2. Disassemble the inlet and outlet pipes: loosen the connecting bolts and remove the inlet and outlet pipes.

3. Remove the bearing box and bearing: Remove the connecting bolts between the bearing box and the pump body, and remove the bearing and bearing box.

4. Disassemble the sealing parts: According to the type of pump, it may be a mechanical seal or a packing seal, and remove the related parts one by one.

5. Remove the impeller and shaft: Use special tools, such as puller, to gently pull the shaft out of the pump body.

6. Check the internal: check the pump body, impeller, bearings and other parts of the wear and damage.

7. Disassembly sequence: Starting from unscrewing the bolts on the bearing end cover on the spitting side, remove the bearing end cover, bearing body and other components in turn, then unscrew the round nut on the shaft and remove the bearing inner ring, bearing gland and Retaining ring, then remove the packing body, etc. Continue to remove the O-ring, sleeve, balance plate and flat key on the shaft, then the outlet section, final guide vane, balance ring sleeve and impeller.

2. installation steps:

1. Pre-preparation: Ensure that all components are intact and prepare necessary installation tools and materials.

2. Installation foundation preparation: ensure that the installation foundation is stable and smooth, and ensure that the installation position of the pump meets the design requirements.

3. Install the pump body: install the pump body on the foundation to ensure that it is horizontal and vertical.

4. Install the bearing and bearing box: install the bearing and bearing box in the reverse order of disassembly to ensure the lubrication of the bearing.

5. Install the impeller and shaft: Install the impeller on the shaft, paying attention to the correspondence of the keyway.

6. Install the sealing parts: according to the type of pump, install the corresponding sealing parts.

7. Install the inlet and outlet pipes: connect the pipe with the pump body to ensure tightness.

8. Debugging and inspection: After the installation is completed, carry out debugging to check whether the pump is running smoothly and whether there is leakage.

3. notes:

1. The operation shall strictly abide by the safety operation procedures to ensure the safety of personnel and equipment.

2. During disassembly and installation, avoid damage to parts, especially sealing parts and impellers.

3. When installing, ensure the accuracy and tightness of each component to prevent leakage and vibration.

4. Records and marks shall be made during disassembly and installation to facilitate subsequent maintenance and overhaul.

In the process of disassembly and assembly, the machining accuracy and surface roughness of the parts should be protected, and no bumps, scratches and other phenomena are allowed. The molybdenum disulfide used for sealing should be clean, and the fastening screws and bolts should be evenly stressed.

6. The neutrality of the impeller outlet flow channel and the guide vane inlet flow channel is guaranteed according to the axial size of each part. The quality of the flow channel directly affects the performance of the pump, so the size of the pump cannot be adjusted at will.

Following these steps and precautions can ensure that the removal and installation process of the multistage pump is safe and efficient, while ensuring the performance and service life of the pump.

In short, the removal and installation of multi-stage pumps in the water conservancy industry is a complex and important task that requires operators to have professional knowledge and experience. Following the above steps and precautions can ensure the accuracy and safety of the operation.

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