Rotary expansible chamber devices – Grooved abutting cylinder-rotating member end surfaces – Non-working fluid directed to groove
Patent
1990-02-07
1991-06-11
Vrablik, John J.
Rotary expansible chamber devices
Grooved abutting cylinder-rotating member end surfaces
Non-working fluid directed to groove
418 96, 418 97, 418104, F04C 2702, F04C 2902
Patent
active
050228366
ABSTRACT:
A sealing device for an oil rotary vacuum pump of the type which includes a rotor, a cylinder for accommodating the rotor, the cylinder having a suction port and a discharge port, an end cover provided at one end of the cylinder, a rotary shaft of the rotor passing the end cover, an oil casing attached to the end cover such that it encloses the cylinder, the oil casing containing oil, an interior of the oil casing above the oil forming a space portion, and a bearing provided in the end cover so as to rotatably support the rotary shaft of the rotor. The sealing device includes: a pair of sealing members mounted on a rotary shaft of the rotor and provided in the end cover, the sealing members being disposed separately from each other so as to form a gap portion therebetween, the pair of sealing members being located on the side of the bearing which is remote from the rotor; an oil reservoir portion formed between the bearing and the sealing member closer to the rotor in the pair of sealing members; a first passage for connecting the oil reservoir portion with the interior of the cylinder which is in the vicinity of the discharge port thereof; a lubricant disposed in the gap portion between the pair of sealing members; and a second passage for connecting the gap portion between the pair of sealing members and the space portion in the oil casing.
Baba Akira
Hirano Sadanori
Tokumitsu Kiyonori
Mitsubishi Denki & Kabushiki Kaisha
Vrablik John J.
LandOfFree
Sealing device for oil rotary vacuum pump does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sealing device for oil rotary vacuum pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sealing device for oil rotary vacuum pump will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-780337