| 摘要 |
The invention relates to hydraulic machine building, particularly to centrifugal electric pumps for pumping liquids, and can be used in various branches of industry in the design of sealed shielded electric pumps with dry stator and wet rotor. The sealed electric pump includes a pump part and an electric motor. The electric motor comprises a stator unit and a rotor unit. The stator unit comprises a body in the form of glass, in the bottom of which is hermetically fixed the electric cable bushing. At the opposite end of the body is made a flanging. Inside the body is situated the stator. The rotor unit comprises a sealed shielding sleeve, inside which is placed the rotor. The rotor shaft of the electric pump is installed in radial bearings, placed in shock absorbers through bushes. The sleeve from the end of the body bottom is hermetically sealed with a plug, under which is installed a spacing washer. At the ends of the rotor are mounted thrust bearings, which come in contact with the ends of the bearings, bushes and shock absorbers. Mounting of the rotor unit sleeve to the pump part is made with the help of a coupling bolt passing through a joint ring, forming a rotary-pumping unit. Mounting of the stator node body to the sleeve and the pump part of the electric pump is made with the help of a bolt, passing through a pressure ring, placed on the flanging of the stator unit body. The result of the invention is to simplify the design of the sealed electric pump by making the stator removable with the possibility of dismantling without unsealing the hydraulic circuit of the pump.
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