| 摘要 |
FIELD: engines and pumps. ^ SUBSTANCE: invention relates to pumps. Proposed pump has its separating chamber formed by motor lower flange, movable disk, outer and inner membranes tightly fixed between said motor flanges and case, as well as between movable and fastening disks. Motor lower flange has channels arranged to communicate separating chamber with upper and lower sealing devices spaces. Guide pins with heads are fitted in said flange channels. These pins are aligned with centering holes made in movable disk arranged to axially move over aforesaid heads and to incline movable disk face with respect to that of motor lower flange face. Parallelism of aforesaid faces and pressure in said separating chamber exceeding that of work fluid ahead of lower sealing device are ensured by compression springs. The latter are regularly arranged along the circumference on flats between the case and movable disk in the space communicated with space ahead of lower sealing device. Pump is furnished with pressure and safety valves and channels to communicate both with separating chamber. Disk position indicator is arranged on disk surface. Motor lower flange, made from non-magnetic material, accommodates deep-well pump cut-off state indicator. Both aforesaid indicator are arranged opposite each other and separated by thin wall arranged in motor lower flange. ^ EFFECT: higher reliability, longer life, expanded performances. ^ 2 cl, 2 dwg |
