Several parts of the centrifugal pump cleaning are listed.
1) scraping off the inside and outside surface of the impeller and sealing ring and bearing, such as the accumulated water scale and rust and other objects, and then clean and purge with water or compressed air.
2) the shell cleaning pump coupling surface accumulation of grease and rust.
3) clean the water seal pipe and check whether the pipe is unblocked.
4) bearing and bearing cleaning, remove grease, and cleaning of oil ring and oil level gauge etc.. Ball bearings are used for cleaning gasoline.
5) the parts and parts that are not assembled for the time being should be coated with oil after cleaning.
The following steps should be followed:
1. According to the processing requirements, some parts need to be polished, the surface can not have processing burrs, etc.
2. All parts are degreased.
3. After the degreasing is completed, the acid washing and passivation (cleaning agent is not phosphorous);
4. Rinse with pure water after pickling and passivation, and there can be no residual drug (carbon steel parts to save this step).
5, one by one, the parts are dried with non-woven fabrics, and they can not retain the surface of the components such as wired hair or dry with clean nitrogen.
6, use non-woven or precision filter paper to analyze pure alcohol on one by one, until there is no dirty color.
The basic principle of centrifugal pump cleaning is all cleaning methods, and the following basic requirements must be fully considered.
1) to meet the requirements for the cleanliness of the parts, in the repair of the water pump, various kinds of machine parts, the degree of cleaning requirements is not the same. In the assembly, the cleaning requirements of the fittings are higher than those of the non - fit parts, the moving parts are higher than the static fit parts, and the precision fit parts are higher than those of the non - precision fit parts. The cleaning requirements are very high for the surface of the sprayed, plated and bonded workpiece. In cleaning, different cleaning agents and cleaning methods must be taken to ensure the quality of the cleaning required.
2) prevent the corrosion of the parts, and do not allow any degree of corrosion to the precision parts. When the pump parts need to be parked after cleaning, the antirust ability of the cleaning liquid should be considered or other measures should be taken into consideration.
3) ensure the safety of operation, prevent fire or poison the human body and cause pollution to the environment.
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