Author(s): J Jiang; J D Guo; Q Q Sun; C Liu; L Q Liu

Linked Author(s):

Keywords: Floating sleeve; External spur-gear pump; Parameters optimization; Gamultiobi function

Abstract: In this paper, the mechanism of the wear of floating sleeve was analyzed firstly and according to three different pressure assumptions. The force and moment of the inner part of the floating sleeve were deduced respectively and are compared with the analog value. As a result, the force and moment of the inner part of the floating sleeve based on assumption which has minimal error can be a reference value. Then the expression of outboard force and moment were deduced. Based on the Gamultiobi() Function, the resultant and resultant moment of the eccentric 8-shaped floating sleeve were taken as objective functions. And the outer diameter, inner diameter, angle and elastic strength of the seal ring on the eccentric 8-shaped floating sleeve were taken as independent variables. With the restrained conditions of the width of seal ring, the values of the independent variables were obtained when the values of objective functions were minimum. At last, numerical simulation were carried out on external spur-gear pump with two types of floating sleeves. The numerical simulation of gear pump with optimized floating sleeve shows that the resultant of the eccentric 8-shaped floating sleeve is almost zero and the pressure distribution is the same as the assumption. The research can provide a technical reference for gear pump sealing technology.

DOI: https://doi.org/10.1088/1755-1315/163/1/012095

Year: 2017