Pump System and Method for Operating a Pump System

Abstract

The invention is based on pump system (10), in particular a self-suction pump system, with a liquid conveying unit (12) for conveying a liquid (56) and with a vacuum pump unit (14) which is, at least in an initial operation state, configured to supply the liquid conveying unit (12) with the liquid (56).In order to improve a construction, it is proposed that at least in the initial operation state, the vacuum pump unit (14) is configured to transport a gas along the liquid conveying unit (12).

1 . A pump system, in particular a self-suction pump system, with a liquid conveying unit for conveying a liquid and with a vacuum pump unit which is, at least in an initial operation state, configured to supply the liquid conveying unit with the liquid, wherein at least in the initial operation state, the vacuum pump unit is configured to transport a gas along the liquid conveying unit. 
     
     
         2 . The pump system according to  claim 1 , comprising a housing unit, in which the liquid conveying unit arranged so as to be spaced apart by a gap, wherein the vacuum pump unit conveys the gas through the gap, at least in the initial operation state. 
     
     
         3 . The pump system according to  claim 1 , comprising a drive unit which, at least in the initial operation state, drives the liquid conveying unit and the vacuum pump unit. 
     
     
         4 . The pump system according to  claim 3 , wherein in a continuous operation state that follows the initial operation state, the drive unit drives the liquid conveying unit and the vacuum pump unit. 
     
     
         5 . The pump system according to  claim 3 , wherein the drive unit comprises a drive shaft, which is configured for driving the liquid conveying unit and the vacuum pump unit. 
     
     
         6 . The pump system according to  claim 5 , wherein the liquid conveying unit and the vacuum pump unit are operatively connected to the drive shaft directly. 
     
     
         7 . The pump system according to  claim 1 , wherein the liquid conveying unit comprises at least one liquid conveying rotor. 
     
     
         8 . The pump system according to  claim 1 , wherein the vacuum pump unit comprises at least one gas conveying rotor. 
     
     
         9 . The pump system according to  claim 1 , wherein the vacuum pump unit self-sealing by means of a liquid. 
     
     
         10 . The pump system according to  claim 1 , comprising a non-return valve, which is arranged at a liquid outlet of the liquid conveying unit. 
     
     
         11 . The pump system according to  claim 10 , wherein at least in the initial operation state, the vacuum pump unit provides a negative pressure which keeps the non-return valve closed. 
     
     
         12 . The pump system according to  claim 10 , wherein a gas outlet of the vacuum pump unit is arranged with respect to a liquid conveying path downstream of the non-return valve. 
     
     
         13 . A method for operating a pump system, in particular a pump system according to  claim 1 , with a liquid conveying unit, by which a liquid is conveyed, and with a vacuum pump unit, by which the liquid conveying unit is supplied with the liquid, at least in an initial operation state, wherein at least in the initial operation state, a gas is transported along the liquid conveying unit by the vacuum pump unit.