Vacuum pump with special-shaped cavity
A vacuum pump, special-shaped cavity technology, applied in the direction of pumps, pump components, rotary piston pumps, etc., to achieve the effect of high volumetric efficiency, simple structure, and small number of parts
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[0043] Reference Figure 1 to Figure 7 . The special-shaped cavity vacuum pump of the present invention includes a stator 1 with a special-shaped cylindrical inner cavity, an inlet 2, an outlet 3, a first unloading slot 4, a second unloading slot 26, and a pressure balance slot 31, and a stator 1 installed on both ends of the stator 1. The upper cover plate 12 and the lower cover plate 22 constitute a sealed cavity, and a rotor is installed in the sealed cavity.
[0044] The special-shaped cylindrical cavity of the stator 1 is composed of a quarter arc surface AB, a transition arc surface BC, a quarter arc surface CD, a turning plane DE, and a limit curved surface EA in sequence; a quarter arc surface The surface AB and the quarter arc surface CD are coaxial, and the common axis is O (see figure 2 , image 3 ); The center of curvature of the B and C ends of the transition arc BC is located on the common axis O of the quarter arc surface AB and the quarter arc surface CD; the po...
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