DRAINAGE PUMP Russian patent published in 2024 - IPC F04D13/08 

FIELD: pumping.

SUBSTANCE: household drainage pumps used for pumping or transfer of liquid/water from wells, basements, household premises, open water sources for domestic purposes. The drainage pump contains a vertical housing with a sealed casing in which an electric motor is located, the shaft of which is directly connected to an impeller in the form of a disk with blades located in the working chamber; a filter grid with filter holes, an outlet pipe with an outlet channel for the pumped liquid. The pump casing is made of three parts: the upper part of the casing, the middle part is rigidly and hermetically connected to it, to which the lower part of the casing is in turn rigidly and hermetically connected, while the upper and middle parts are separated by a horizontal wall with an outlet hole into the outlet channel of the nozzle, and the middle part is separated by a vertical partition from the sealed casing of the electric motor, forming a drainage channel; in this case, a diffuser is installed on the walls of the lower part of the casing, and in the lower part of the casing there is a working chamber and a drainage chamber connected to it, separated by a cut-off device and combined with a diffuser, the walls of which follow the contour of the working and drainage chambers, and part of the diffuser is above the drainage chamber of the lower part of the casing made through and included in the drainage channel of the middle part; in this case, the pump contains a filter chamber, which is in telescopic interaction with the lower part of the casing, located inside the filter chamber, with the ability to switch modes: for pumping clean water and for pumping dirty water by fixing them relative to each other vertically; wherein the bottom of the filter chamber is equipped with a grid with filter holes with dimensions corresponding to the maximum size of the contaminant fraction for the “clean water” mode; and in the side walls of the filter chamber there are filter holes with dimensions corresponding to the maximum size of the contaminant fraction for the “dirty water” mode.

EFFECT: expansion of the functionality of a household drainage pump, which consists in creating a drainage pump operating in two modes: for pumping clean water containing fine solid particles, and for pumping dirty water containing large solid particles.

8 cl, 18 dwg