CN210344287U

CN210344287U - Oil leakage prevention sealing device

Info

Publication number: CN210344287U
Application number: CN201921469287.7U
Authority: CN
Inventors: 邓玉均; 彭忠奎; 刘水静
Original assignee: Chengdu Full Ventilator Manufacturing Co ltd
Current assignee: Sichuan quanfan Manufacturing Co.,Ltd.
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-04-17
Anticipated expiration: 2029-09-04

Abstract

The utility model discloses an oil leakage prevention sealing device, including engine body shell, rotation axis and end cover, the engine body shell symmetry is equipped with the dead eye that is used for installing the rotation axis, and the dead eye outer end is located to the end cover, and the end cover is kept away from the engine body shell end and is equipped with the apron, still is equipped with the cavity between apron and the end cover, is equipped with the oil blanket in the cavity, and rotation axis rotation is installed in the dead eye, and the surface of rotation axis is equipped with rotatory oil groove, is equipped with the oil scraper ring between rotation axis and the bearing, and the. The sealing performance of the end is effectively improved through the rotating shaft, the end cover, the oil retainer, the oil seal and other components arranged between the rotating shaft and the end cover; the oil grooves of the rotating shaft and the oil return holes are recycled, so that the lubricating oil can be effectively recycled, waste is reduced, the oil retainer and the oil seal are prevented from being soaked in the lubricating oil for a long time, the oil leakage situation of end covers on two sides of the fan is avoided, the service time of each component is prolonged, and the replacement frequency is reduced.

Description

Oil leakage prevention sealing device

Technical Field

The utility model belongs to the technical field of the sealing member equipment technique and specifically relates to a leak protection oil sealing device that says so.

Background

The rotating shaft of the steam turbine and the gas turbine is supported and positioned by a bearing arranged in a bearing box. During operation, the bearings and the rotating shaft need to be fully lubricated and cooled, so a large amount of lubricating oil needs to be introduced into the box body; however, since the lubricating oil flows and splashes in the interior thereof, and oil leakage and fire and other accidents due to oil leakage are likely to occur, it is necessary to provide a sealing device between the housing, the rotary shaft, and the end cover to prevent the lubricating oil in the housing from leaking. The traditional oil leakage prevention assembly comprises oil retainer rings, oil seals and other components, but the oil leakage prevention effect is good when the oil leakage prevention assembly is used, but the oil leakage is easy to occur after a period of time after the oil leakage prevention assembly is soaked in lubricating oil for a long time, and then the oil leakage prevention assembly needs to be replaced. The replacement process is complicated and takes a lot of time, thus being not suitable for long-term use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide an oil leakage prevention sealing device, which effectively improves the sealing performance of the end head through a rotating shaft, an end cover, an oil retainer, an oil seal and other components arranged between the rotating shaft and the end cover; the lubricating oil that can realize splashing or seepage to the end is recycled to rotation axis oil groove and oil gallery, carries out effectual recovery and utilization, reduces the waste of lubricating oil to avoided oil scraper ring and oil blanket to be in the soaking of lubricating oil for a long time, stopped the easy condition emergence of oil leak of fan both sides end cover simultaneously, prolonged each part live time, reduce the change frequency.

The embodiment of the utility model is realized like this:

an oil leakage prevention sealing device comprises a machine body shell, a rotating shaft and end covers, wherein the machine body shell is symmetrically provided with bearing holes for mounting the rotating shaft, the end covers are arranged at the outer ends of the bearing holes, the end covers are sleeved on the rotating shaft and connected with the machine body shell through bolts, the ends of the end covers, far away from the machine body shell, are provided with cover plates, the cover plates are connected with the end covers through screws, cavities are further arranged between the cover plates and the end covers, oil seals are arranged in the cavities, and the oil seals are arranged on the surface of the rotating shaft;

the rotating shaft is rotatably arranged in the bearing hole through a bearing, a rotating oil groove is arranged on the surface of the rotating shaft, the rotating oil groove is arranged on the surface of the rotating shaft, which is coated by the end cover, an oil retainer ring is arranged between the rotating shaft and the bearing, and the oil retainer ring is sleeved on the surface of the rotating shaft;

and an oil return hole is formed in the lower end, located on the rotating shaft, of the end cover, and the oil return hole is located between the cavity and the oil retainer.

Further, the bearing is a sliding bearing.

Furthermore, a plurality of annular grooves are formed in the inner surface of the end cover corresponding to the rotary oil grooves.

Further, the oil deflector ring comprises a ring body, a pre-baffle and a mounting ring, wherein the ring body and the pre-baffle are of an annular structure, the ring body and the pre-baffle are sleeved on the outer surface of the rotating shaft, the pre-baffle is located on the inner side of the ring body, and the pre-baffle is connected with the ring body through the mounting ring.

Furthermore, a plurality of oil seal teeth are arranged on the ring body close to the rotating shaft, and the inner diameter of the pre-baffle is smaller than the diameter of the oil seal teeth.

Furthermore, a gap is reserved between the pre-baffle and the rotating shaft, and a gap is reserved between the oil seal teeth and the rotating shaft.

Furthermore, the ring body, the pre-baffle and the mounting ring are connected through welding.

Further, the ring body, the pre-baffle and the mounting ring are connected through bolts.

The utility model has the advantages that: the sealing performance of the end is effectively improved through the rotating shaft, the end cover, the oil retainer, the oil seal and other components arranged between the rotating shaft and the end cover; the lubricating oil that can realize splashing or seepage to the end is recycled to rotation axis oil groove and oil gallery, carries out effectual recovery and utilization, reduces the waste of lubricating oil to avoided oil scraper ring and oil blanket to be in the soaking of lubricating oil for a long time, stopped the easy condition emergence of oil leak of fan both sides end cover simultaneously, prolonged each part live time, reduce the change frequency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic sectional view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic view of the oil retaining ring structure of the present invention.

Icon: 1-machine body shell, 101-bearing hole, 2-rotating shaft, 201-rotating oil groove, 3-end cover, 301-cover plate, 302-oil return hole, 4-oil seal, 5-bearing, 6-oil retainer, 601-ring body, 602-pre-baffle, 603-mounting ring and 604-oil seal tooth.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Examples

As shown in fig. 1 to fig. 3, the present embodiment provides a technical solution: an oil leakage prevention sealing device comprises a machine body shell 1, a rotating shaft 2 and an end cover 3, wherein the machine body shell 1 is symmetrically provided with a bearing 5 hole 101 for mounting the rotating shaft 2, the end cover 3 is arranged at the outer end of the bearing 5 hole 101, the end cover 3 is sleeved on the rotating shaft 2 and is connected with the machine body shell 1 through a bolt, the end, far away from the machine body shell 1, of the end cover 3 is provided with a cover plate 301, the cover plate 301 is connected with the end cover 3 through a bolt, a cavity is further arranged between the cover plate 301 and the end cover 3, an oil seal 4 is arranged in the cavity, and the oil seal 4 is sleeved on the surface of the rotating shaft 2; the rotating shaft 2 is rotatably mounted in the bearing 5 hole 101 through a bearing 5, a rotating oil groove 201 is arranged on the surface of the rotating shaft 2, the rotating oil groove 201 is arranged on the surface of the rotating shaft 2 covered by the end cover 3, an oil retainer ring 6 is arranged between the rotating shaft 2 and the bearing 5, and the oil retainer ring 6 is sleeved on the surface of the rotating shaft 2; the end cover 3 is provided with an oil return hole 302 at the lower end of the rotating shaft 2, and the oil return hole 302 is located between the cavity and the slinger 6. The utility model effectively improves the sealing performance of the end head through the rotating shaft 2, the end cover 3, the oil retainer 6 arranged between the rotating shaft and the end cover, the oil seal 4 and other components; reuse 2 oil grooves of rotation axis and oil gallery 302 can realize carrying out effectual recovery and utilization to the lubricating oil that splashes or oozes the end to reduce the waste of lubricating oil to avoided oil slinger 6 and oil blanket 4 to be in soaking of lubricating oil for a long time, stopped the easy condition emergence of oil leak of appearing of fan both sides end cover 3 simultaneously, prolonged each parts live time, reduced the change frequency.

The bearing 5 is a sliding bearing 5. The sliding bearing 5 has a long life and is suitable for high speed; can bear impact and vibration load; the running precision is high, the work is balanced, and no noise exists; the structure is simple, and the assembly and disassembly are convenient; the bearing capacity is large, and the device can be used in heavy-load occasions.

A plurality of annular grooves are formed in the inner surface of the end cover 3 corresponding to the rotary oil groove 201.

The oil slinger 6 comprises a ring body 601, a pre-baffle 602 and a mounting ring 603, wherein the ring body 601 and the pre-baffle 602 are both in an annular structure, the ring body 601 and the pre-baffle 602 are both sleeved on the outer surface of the rotating shaft 2, the pre-baffle 602 is positioned on the inner side of the ring body 601, and the pre-baffle 602 and the ring body 601 are connected through the mounting ring 603.

The ring body 601, the pre-baffle 602 and the mounting ring 603 are connected by welding or bolts. The welding connection mode has the advantages of good connectivity, large structural rigidity, good integrity and the like; bolted connection convenient to detach and the change of later stage spare part, under the condition that part was changed, only need to the part of damage change can, can reduce cost of maintenance.

A plurality of oil seal teeth 604 are arranged on the ring body 601 near the rotating shaft 2; the inner diameter of the pre-baffle 602 is smaller than the diameter of the oil seal teeth 604, so that lubricating oil can be effectively placed to directly reach the oil seal teeth 604.

There is a gap between the pre-baffle 602 and the rotating shaft 2, and there is a gap between the oil seal teeth 604 and the rotating shaft 2. Avoiding direct rubbing of the pre-guard 602 and the oil seal teeth 604 against the rotating shaft 2.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an oil leakage prevention sealing device, includes engine body shell (1), rotation axis (2) and end cover (3), engine body shell (1) symmetry is equipped with and is used for the installation bearing (5) hole (101) of rotation axis (2), end cover (3) are located bearing (5) hole (101) outer end, its characterized in that: the end cover (3) is sleeved on the rotating shaft (2) and connected with the machine body shell (1) through a bolt, a cover plate (301) is arranged at the end, far away from the machine body shell (1), of the end cover (3), the cover plate (301) is connected with the end cover (3) through a bolt, a cavity is further formed between the cover plate (301) and the end cover (3), an oil seal (4) is arranged in the cavity, and the oil seal (4) is sleeved on the surface of the rotating shaft (2);

the rotating shaft (2) is rotatably arranged in a hole (101) of the bearing (5) through a bearing (5), a rotating oil groove (201) is formed in the surface of the rotating shaft (2), the rotating oil groove (201) is formed in the surface, coated by the end cover (3), of the rotating shaft (2), an oil retainer ring (6) is arranged between the rotating shaft (2) and the bearing (5), and the oil retainer ring (6) is sleeved on the surface of the rotating shaft (2);

and an oil return hole (302) is formed in the lower end, located on the rotating shaft (2), of the end cover (3), and the oil return hole (302) is located between the cavity and the oil slinger (6).

2. An oil leakage preventing sealing device according to claim 1, characterized in that: the bearing (5) is a sliding bearing (5).

3. An oil leakage preventing sealing device according to claim 1, characterized in that: and a plurality of annular grooves are formed in the inner surface of the end cover (3) corresponding to the rotary oil groove (201).

4. An oil leakage preventing sealing device according to claim 1, characterized in that: the oil retainer ring (6) comprises a ring body (601), a pre-baffle (602) and a mounting ring (603), wherein the ring body (601) and the pre-baffle (602) are of an annular structure, the ring body (601) and the pre-baffle (602) are sleeved on the outer surface of the rotating shaft (2), the pre-baffle (602) is located on the inner side of the ring body (601), and the pre-baffle (602) and the ring body (601) are connected through the mounting ring (603).

5. An oil leakage preventing sealing device according to claim 4, characterized in that: the ring body (601) is close to the rotating shaft (2) and is provided with a plurality of oil seal teeth (604), and the inner diameter of the pre-baffle (602) is smaller than the diameter of the oil seal teeth (604).

6. An oil leakage preventing sealing device according to claim 5, characterized in that: a gap is reserved between the pre-baffle (602) and the rotating shaft (2), and a gap is reserved between the oil seal teeth (604) and the rotating shaft (2).

7. An oil leakage preventing sealing device according to claim 4, characterized in that: the ring body (601), the pre-baffle (602) and the mounting ring (603) are connected through welding.

8. An oil leakage preventing sealing device according to claim 4, characterized in that: the ring body (601), the pre-baffle (602) and the mounting ring (603) are connected through bolts.