| 摘要 |
<p>A rotary displacement pump, comprising: (a) a stator (42); (b) a rotor including a shaft portion (8) and a radially protruding web (12) having a configuration of an undulatory disk type; (c) a scraper (110) having an engagement slot (112) of predetermined radial height and predetermined axial width, the engagement slot (112) engaging said protruding web (12) of said rotor; (d) said stator (42) including a generally cup shaped first member (44) and a generally cup shaped second member (46), and defining a circumferential wall; (e) said scraper (110) being arranged within said stator (42), supported to be retained in circumferential direction and to allow a reciprocating movement in a substantially axial direction; (f) said stator (42) together with said scraper (110) defining an inlet chamber (138), having an inlet port (68), of said pump (2), an outlet chamber (142), having an outlet port (70), of said pump (2), and a channel (140) extending from said inlet chamber (138) to said outlet chamber (142),
said scraper (110) forming a partition between said inlet chamber (138) and said outlet chamber (142), and said web (12) of said rotor being rotatable through said inlet chamber (138), said channel, said outlet chamber (142) and said slot (112) of said scraper (110).</p> |
