CN2729436Y

CN2729436Y - Anti-leakage oil structure of end cap type mobile bearing

Info

Publication number: CN2729436Y
Application number: CN 200420068002
Authority: CN
Inventors: 周映琳; 周少华
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-29
Filing date: 2004-06-29
Publication date: 2005-09-28
Anticipated expiration: 2014-06-29

Abstract

The utility model relates to an anti-leakage oil structure of an end cap type mobile bearing. A plurality of sealing ring grooves (2) are opened in a gas sealing cap (1) of the end cap type movable bearing used by a motor, the ring groove is provided with a sealing ring (6), and a depressing tank (3) is opened between the ring grooves. The bottom of the depressing tank (3) is provided with a slot or a bore (5) communicated with an air duct (4). When the negative pressure is generated in the motor, the negative pressure is weaken by the first sealing. The negative pressure is weaken further through depressing tank, and the air in the air duct (4) is sucked directly. The negative pressure at the bearing enclosure is reduced to environment air pressure basically after decompression, and the purpose of the anti-leakage oil is reached. The sucking action to the oil and oil gas in the bearing of the negative pressure generated in the motor is reduced effectively, and the leakage of the oil in the bearing is prevented. The sealability at input-output axes is improved, the service life of the oil sealing is improved, the changing frequency of the oil sealing is reduced, the material and maintenance cost are saved, and the work efficiency is increased.

Description

End cover type live bearing leak-proof arrangement

Technical field

The utility model relates to a kind of end cover type live bearing leak-proof arrangement.

Background technique

At present, motor DQ series end cover type sliding bearing-standard code JB/T5888 when being used for the higher rotation speed motor, owing to produce negative pressure in the motor, makes interior oil of bearing and oil gas pass through the sealing gland lid, sucks motor internal and causes electrical fault.Existing leakproof oil seal technology adopts sealing configurations such as oil sealing, disc, Oil Guide screw thread more, and wherein, oil sealing is a common structure, and oil sealing contacts for a long time with input, output shaft, thereby causes that unavoidably aging, wearing and tearing cause leakage of oil, change oil sealing.This maintenance, labor strength is big, and long in time limit.

Summary of the invention

The purpose of this utility model provides a kind of end cover type live bearing leak-proof arrangement.

The technological scheme that its technical problem that solves the utility model adopts is: open two or more closure gasket grooves (2) in the sealing gland lid (1) of motor with the end cover type live bearing, seal ring (6) is housed in closure gasket groove (2), between closure gasket groove (2), reduce indent (3), have groove or hole (5) in the bottom of decompressing groove (3), groove or hole (5) communicate with air conduit (4), air conduit (4), communicate with atmosphere.When producing negative pressure in the motor, at first be that the seal ring (6) of close motor weakens negative pressure, behind decompressing groove (3), negative pressure further weakens, and the air in the direct suction air conduit (4).The negative pressure that sealing gland chamber (8) is located reduces to ambient pressure substantially, thereby reaches the purpose that prevents leakage of oil.

The beneficial effects of the utility model are, the negative pressure that can effectively reduce generation in the motor is to pumping action oily in the bearing, that reach oil gas, thereby prevent the leakage of oil in the bearing, improved the sealing at input and output shaft place, increase the working life of oil sealing, reduce replacing frequency, economical with materials and the maintenance expenses of oil sealing.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

1. sealing glands lid among the figure, 2 closure gasket grooves, 3 decompressing grooves, 4. air conduit, 5. groove or hole, 6. seal ring, 7. attachment hole, 8. sealing gland chamber.

Embodiment:

As Fig. 1, on the motor of motor on the right of being fixed on by attachment hole (7) with the sealing gland lid (1) of DQ series end cover type live bearing and bearing arranged, open 2 road closure gasket grooves (2) in the sealing gland lid (1), seal ring (6) is housed in annular groove, between annular groove, reduce indent (3), have groove or hole (5) in the bottom of decompressing groove (3) and communicate with air conduit (4), air conduit (4) atmosphere communicates.When producing negative pressure in the motor, the first road seal ring (6) on the left side weakens negative pressure, and behind decompressing groove (3), negative pressure further weakens, and the air in the direct suction air conduit (4).Through after the decompression, the negative pressure that the sealing gland chamber (8) on the right of making is located reduces to ambient pressure substantially, thereby reaches the purpose that prevents leakage of oil like this.

Claims

1, a kind of end cover type live bearing leak-proof arrangement, in the sealing gland lid (1) of end cover type live bearing, open closure gasket groove (2), dress seal ring (6) in closure gasket groove (2), it is characterized in that: have decompressing groove (3) between the adjacent seals annular groove (2), decompressing groove (3) has groove or hole (5) communicate with air conduit (4), and air conduit (4) communicates with atmosphere.