序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
41 기어 펌프 및 기어 펌프의 운전 방법 KR1020140071519 2014-06-12 KR1020140146538A 2014-12-26 이와사키신; 이리타니가즈오
In order to control a gap between a bearing and a gear rotor at high precision through a simple construction, a gear pump according to the present invention comprises: a casing having a suction hole and a discharge hole; one pair of gear rotors each having a gear part and an axial part, which are formed by monolithic molding, and arranged in a mutual engagement state in the casing; bearing parts for supporting the axial parts so as to enable the gear rotors to rotate, and movable along the thrust direction of the gear rotors; and gap control means for controlling the gaps between the gear rotors and the bearing parts by moving the bearing parts in the thrust direction.
42 PRESSURE SEALED TAPERED SCREW PUMP/MOTOR PCT/US2006008524 2006-03-09 WO2006099104A3 2006-11-30 NOTIS ALAN
A fluid pump (10) or motor (100) includes a pair of enmeshed tapered rotors (22,24,122,124) having intersecting axes of rotation. The first rotor (22,122) includes a small low pressure end (34,54,134,154) and a larger high pressure end (32,52,132,152) and a spiral thread (36,56,136,156) that increases in width and depth as it progresses from the high pressure end (28,128) to the low pressure end (26,126). The second rotor (24,124) enmeshes with the first rotor (22,122), and has an identical structure, except that its threads (36,56,136,156) progress in the opposite direction. Both rotors (22,24,122,124) are mounted on sliding splines (42,62,142,162) which permit them to move, to a limited extent, into and out of their respective receiving cavities. The pressure on the high side (28,128) of the pump (10) or motor (100) tends to urge the rotors (22,122,24,124) against the walls (16,20,116,120) of the receiving cavities thereby improving their sealing capabilities and the overall efficiency of the pump (10) or motor (100) as a whole.
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