| 摘要 |
Liquid seal pump of the helical screw type including a pump housing (3) with an inlet (2), outlet (6) and within the housing provided helical screw rotor (7) driven by means of a motor (8). The outlet (6) of the pump (3) is provid ed with a sealing liquid tank (4) for the supply of liquid to the pump and thereby maintaining the liquid seal under idle running of the pump. |
