PUMP SCREW-WHEEL AND PUMP WITH SUCH SCREW-WHEEL Russian patent published in 2012 - IPC F04D29/22 F04D7/04 

FIELD: engines and pumps.

SUBSTANCE: set of invention relates to machine building and is intended for transfer of fluids with solid inclusions, for example, effluents. Pump screw-wheel 1 comprises one first blade 3. Note here that said blade comprises first part 3a and first part 3b of centrifugal wheel abutting thereupon, and hub 2 with rotational axis D. Centrifugal wheel blade part 3b is rigidly jointed to hub 2. Said wheel comprises also at least one second blade 4 including screw-wheel blade second part 4a and centrifugal wheel blade second part 4b abutting thereupon. First and second blades 3, 4 have outer edge 3c, 4c. Connector 5 nearby outer edge 3c, 4c interconnects first and second blades 3, 4. Blade second part 4b extends relative to hub 2 so that opening 6 is formed there between in direction D since second part 4b is not directly jointed to hub 2.

EFFECT: reliable operation, higher efficiency.

12 cl, 9 dwg