PUMP BEARING LOCK Russian patent published in 2021 - IPC F04D29/47 F04D13/06 F04D29/06 F04D29/58 

FIELD: mechanical engineering.

SUBSTANCE: group of inventions relates to a lock (29) of a pump bearing for a wet running pump, wherein the lock (29) of the pump bearing contains a radially inner section (49), a radial bearing (37) with an inner sliding surface (41) made with the possibility of providing a lubricating film between the sliding surface (41) and the rotary shaft (13) of the pump (1), wherein the radial bearing (37) is installed in a radially inner section (49), and a radially outer section (51) extending radially outward from the section (49). The section (49) restricts at least one first axial fluid channel (45) to provide the first path (F1) of the fluid flow in the first axial flow direction. At least one channel (45) is located at the first radial distance (D1) from the rotary axis (R), and the distance (D1) is greater than the radius (D0) of the sliding surface (41). The section (51) restricts at least one second axial fluid channel (47) to allow the fluid flow path (F2) in the second axial flow direction through at least one channel (47), with at least one channel (47) located at the second radial distance (D2) from the rotary axis (R). The distance (D2) is greater than the distance (D1). The second axial flow direction is opposite to the first axial flow direction.

EFFECT: reducing the risk of blocking the pump with lime deposits and friction losses and wear due to magnetism accumulated on the rotor.

21 cl, 6 dwg