JPH0174392U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of this invention, Fig. 2 is a sectional view of its essential parts, Fig. 3 is a sectional view showing another embodiment of this invention, and Fig. 4 is a sectional view of a conventional device. It is. In the figure, 2 is a rotor, 3 is a vane, 4 is a cylinder, 4b is a discharge port, 5 is an end cover, 6 is a rotating shaft, 7
1 is a bearing, 8 and 16 are oil seals, 9 and 17 are oil reservoirs, and 11 is an oil guide path. In each figure, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims for Utility Model Registration] (1) A rotor, a vane held by the rotor, a cylindrical cylinder surrounding these vanes and the rotor, and a cylindrical cylinder provided at one end of the cylinder,
an end cover through which the rotational shaft of the rotor passes; a bearing fitted to the end cover and rotatably supporting the rotational shaft; and a bearing fitted to the end cover on a side opposite to the rotor from the bearing; An oil rotary vacuum pump comprising a sealing member for sealing between the rotating shaft and the rotating shaft, characterized in that the bearing and the sealing member communicate with the vicinity of the discharge port in the cylinder. Shaft sealing device for oil rotary vacuum pump. (2) forming a pair of the sealing members with a gap in between;
A request for registration of a utility model characterized in that the gap is filled with a lubricant, and the sealing member on the rotor side of the pair of sealing members and the bearing are communicated with the vicinity of the discharge port. A shaft sealing device for an oil rotary vacuum pump according to item 1.