Pump device

A pump device for sucking and transferring of objects, the pump device comprising:

• a pump housing;
• at least one impeller;
• an air withdrawal opening;
• at least one inlet opening defined in the pump housing;
• at least one outlet opening defined in the pump housing;
• and
• at least one drive device,
• wherein:
• the pump housing includes a first short side defined as a semicircle or partial circle and a second short side defined as a flat or plane surface, two long sides having a tapered shape extending from the first short side to the second short side, and two planar sides so as to define a closed pump housing;
• the at least one impeller is in the pump housing;
• a flow channel is defined in the at least one impeller so as to fluidly connect an interior of the pump housing with the at least one inlet opening of the pump housing;
• an outlet of the flow channel is substantially perpendicular to an inlet of the flow channel;
• the at least one outlet opening of the pump housing is substantially parallel to the at least one inlet opening of the pump housing;
• the at least one inlet opening of the pump housing is closer to the first short side of the pump housing, and the at least one outlet opening of the pump housing is closer to the second short side of the pump housing;
• the tapered shape, extending from the first short side of the pump housing to the second short side of the housing, defines an area or chamber configured to slow down a speed of water before the at least one outlet opening of the pump housing;
• and
• the area or chamber is beyond the at least one inlet opening of the pump housing in a location at the second short side of the pump housing.