We found that many enterprises reflect that the impeller of 2BV water ring vacuum pump will be damaged due to friction with the disc The reasons are as follows: ① The motor shaft moves too much in series ② Unreasonable assembly of impeller and motor shaft ③ The extracted gas contains corrosion, and the motor shaft sleeve is not corrosion-resistant ④ There is no annealing difficulty for the disk, and it is deformed for a period of time 2bvf water ring vacuum pump produced by Foshan Vacuum Pump Factory Co., Ltd.: ① Wannan special motor is adopted and strictly tested before leaving factory (motor shaft is well matched) ② Impeller and shaft adopt strong tension account set to ensure long-term use ③ 304 stainless steel shaft sleeve is used in corrosive occasions, which can completely withstand corrosive working environment ④ All parts are annealed for durability and no deformation ⑤ Before leaving the factory, we have passed the professional and strict test to ensure the high quality of products Newest SV-020 Specially designed for packaging machines Paper-ME 2021