Patent ID: 7814926

Claim:
A liquid aspirator, in particular for liquids containing solids, the liquid aspirator comprising: a housing comprising a receptacle and a lid; at least one aspirator motor arranged in the housing; the receptacle enclosing at least two receiving chambers for liquid, each of the at least two receiving chambers having an air aspiration opening that is connected to a vacuum side of the at least one aspirator motor and is provided with a main valve; a vacuum connector connected to the receptacle, wherein liquid is sucked into the receptacle through the vacuum connector with the at least one aspirator motor, wherein a section of the vacuum connector arranged inside the receptacle has for each one of the at least two receiving chambers a separate closeable opening so that the vacuum connector communicates separately with each one of the at least two receiving chambers; a drainage connected to the receptacle through which drainage liquid contained in the receptacle drains from the receptacle; a control that acts on the main valves so as to alternatingly open and close the air aspiration openings so that the at least two receiving chambers are alternatingly filled with liquid through the closeable openings of the vacuum connector, respectively, and so that one of the at least two receiving chambers currently not being filled is drained.