论文部分内容阅读
近年来,我省及其邻近各省地下水位普遍下降,采用普通离心泵提取地下水已不能满足使用要求,将离心泵落井安装不但投资费用大,而且安装、操作、维修极不方便。因此,农田井灌使用长轴井泵逐渐增多,取得了较好的效果。但是,应该看到,由于有的工厂制造质量较低和用户安装使用不当,保养维修不及时,管理措施不严,在使用中经常出现故障。过
In recent years, the underground water level in our province and its neighboring provinces has generally dropped. Using ordinary centrifugal pumps to extract groundwater has not met the requirements for use. Installing the centrifugal pumps into a well is not only expensive in investment but also extremely inconvenient in installation, operation and maintenance. Therefore, the use of long-axis well irrigation well irrigation wells gradually increased, and achieved good results. However, it should be noted that due to the poor quality of some factories and the improper installation and maintenance of users, maintenance and repair are not timely, and lax management practices, they often fail in use. Too