A pump has a rotor made of synthetic resin in a fixed housing which are adjacently arranged while forming a gap between the housing and the rotor to force-feed a medium containing water moisture, in which the rotor is made of a resol-type synthetic resin so that a dimensional change rate of the rotor is 0.15% or less for a medium having a moisture content rate of 10 wt% or less, whereby a sufficient pump performance can be obtained while relatively increasing the degree of freedom of the moisture content rate of the medium to reduce the corrosiveness of the medium.
一种泵有一个由合成
树脂制成的转子,转子安装在一个固定的壳体中,壳体和转子之间形成间隙,转子相邻排列,用于向含有
水分的介质强制供料,其中转子由分解型合成
树脂制成,因此对于含
水率为 10 wt% 或更低的介质,转子的尺寸变化率为 0.15% 或更小,从而可以获得足够的泵性能,同时相对提高介质含
水率的自由度,以降低介质的腐蚀性。