| 摘要 |
Disclosed is a spiral flow constant pressure pump, comprising a pump rear cover (1), a pump body (2), an impeller (3), a bearing body (4) and a pump shaft (5). The impeller (3) comprises a rear covering plate (301) having one side thereof provided with back blades (305), and the other side thereof provided with long blades (303) and short blades (304) which are evenly arranged in an intersected manner, wherein the long blades (303) and the short blades (304) curve in the same direction. The long blades (303) and the short blades (304) respectively form a respective gyration centre. The inner opening diameter of the common gyration centre of the short blades (304) is greater than that of the common gyration centre of the long blades (303). The spiral flow constant pressure pump is used for liquid transmission, and has a constant liquid output pressure and a stable flow, and the friction caused by the pressure from a mechanical seal is small. |
