Bearing lubrication structure of screw blower or vacuum pump

Abstract

The invention discloses a bearing lubricating structure for a screw blower or a vacuum pump, and relates to a lubricating structure. The key points of the technical solution are: a casing and a bearing seat, the bearing seat is provided with a first bearing, and the casing is provided with an oil inlet passage , oil outlet passage, the bearing seat is provided with an oil inlet hole connected to the oil inlet passage, and an oil collection hole connected to the oil outlet passage. The groove is connected to the oil inlet hole, and the end surface of the oil distribution ring is provided with a number of oil outlet holes, the oil outlet holes are facing the first bearing, and the oil outlet holes are connected to the ring groove; the oil inlet hole and the oil collection hole are located in the first bearing At the same position in the axial direction, the oil distribution ring is provided with an oil passage groove near the oil collection hole, and the oil passage groove penetrates from the outer ring surface of the oil distribution ring to the inner ring surface of the oil distribution ring, and the oil collection hole is facing the oil passage groove . The bearing lubricating structure occupies less space in the axial direction of the bearing, which is beneficial to the compactness and miniaturization of the product; the disassembling and manufacturing of the bearing lubricating structure are relatively convenient.

Description

Bearing lubrication structure of screw blower or vacuum pump technical field The present invention relates to a kind of lubricating structure, particularly the bearing lubricating structure of screw blower or vacuum pump. Background technique [0002] The screw blower is a device that utilizes a pair of screws to perform synchronous reverse rotation in the housing to generate exhaust. The working principle and structure of the screw vacuum pump are basically the same as those of the screw blower, the difference is that the exhaust port of the screw blower It is the working end, and the suction port of the screw vacuum pump is the working end. A rotary connection is established between the screw and the shell through bearings, and the screw drum Fans or vacuum pumps are generally provided with lubricating structures for lubricating bearings. Existing application publication number is that the Chinese invention patent application of CN109139708A discloses a kind of bear...

AI Technical Summary

Problems solved by technology

[0005] The existing technical solutions above have the following defects: before the lubricating oil enters the bearing, an oil supply channel must be provided in front of the bearing end, which will occupy the axial length of the bearing, and the oil collection ring will also occupy the axial length of the bearing space; the bearing lubrication structure occupies more space in the axial direction of the bearing, which is not conducive to the compactness and miniaturization of the product

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