CN219317245U - Oil retainer for fan lubrication - Google Patents

Abstract

The utility model relates to a fan lubricating structure, in particular to an oil retainer for fan lubrication, which aims to solve the defects that in the prior art, the oil retainer is easy to damage and age, equipment required by replacement is usually lacking in a use site, and a dismantled rolling bearing is difficult to reuse, so that the replacement and maintenance cost is greatly increased. The utility model relates to a fan lubrication oil retainer which comprises a first semi-ring and a second semi-ring, wherein outer bosses are arranged on two end faces of the first semi-ring, inner bosses are arranged on two end faces of the second semi-ring, threaded blind holes are arranged on two end faces of the second semi-ring, avoidance notches are arranged on two corner parts of the two end faces of the first semi-ring, and threaded through holes are arranged between the avoidance notches and the end faces of the first semi-ring; a gap of 0.5+/-0.1 mm is reserved between the end faces of the first semi-ring and the second semi-ring, so that the oil retainer is in interference fit with the main shaft, and a bearing of a fan is not required to be disassembled during maintenance.

Description

Oil retainer for fan lubrication

Technical Field

The utility model relates to a fan lubrication structure, in particular to an oil retainer for fan lubrication.

Background

The oil retainer in the fan is arranged between the bearing and the impeller, is sleeved on the main shaft and is in interference fit with the main shaft, the oil retainer is usually integrally arranged, heat-resistant rubber materials are adopted, oil adhered to the main shaft is thrown to the inner wall of the oil retainer under the action of centrifugal force in operation, naturally falls down, and oil dripped into the gap is far away from the surface of the main shaft due to the clearance between the oil retainer and the end cover by about 3-5mm and centrifugal inertia, so that a sealing mechanism is formed, and lubricating oil leakage is effectively prevented.

In the transportation and installation process of the unit, the oil retainer can be damaged due to collision and scratch; meanwhile, in the use process of the fan, the oil retainer made of rubber is easy to age due to the fact that the field use environment or lubricating oil does not meet the use requirements and the like, and the oil retainer needs to be replaced periodically to ensure the sealing effect; because the oil retainer is arranged between the bearing and the impeller, the impeller or the bearing is required to be removed when a new oil retainer is replaced, and a proper fixture and lifting equipment are not needed on the site of use, the condition of removing the impeller and the bearing is not provided, the precision of the removed rolling bearing is changed, the fan is difficult to reuse, and the maintenance cost is greatly increased when the fan is returned to a factory for replacement; meanwhile, when the oil retainer is completely sealed, oil leakage phenomenon can be generated due to accumulation of lubricating oil continuously thrown to the inner wall of the oil retainer under the action of centrifugal force at the oil retainer.

Disclosure of Invention

The utility model aims to solve the defects that in the prior art, an oil retainer is easy to damage and age, equipment required by replacement is usually lacking in a use site, and a disassembled rolling bearing is difficult to reuse, so that the replacement and maintenance cost is greatly increased, and provides the oil retainer for fan lubrication.

In order to achieve the above purpose, the technical solution provided by the present utility model is as follows:

the utility model provides a fan lubrication oil retainer which characterized in that: the novel semi-ring assembly comprises a first semi-ring and a second semi-ring, wherein outer bosses are arranged on two end faces of the first semi-ring; the two end surfaces of the second semi-ring are provided with inner bosses matched with the outer bosses; threaded blind holes are formed in two end faces of the second semi-ring; two end parts of the first semi-ring are provided with avoidance notches at one corner part; a threaded through hole is formed between the avoidance notch and the end face of the first half ring; the threaded through hole and the threaded blind hole are connected through a bolt; the outer side surfaces of the first semi-ring and the second semi-ring are provided with axial overhanging edges far away from the threaded through holes and are used for being matched with the end cover of the bearing box; a gap of 0.5+/-0.1 mm is reserved between the end faces of the first semi-ring and the second semi-ring.

Further, oil drain holes are formed in the positions, close to the extending edges, of the middle parts of the first semi-ring and the second semi-ring, and are used for discharging lubricating oil accumulated in the oil retainer into the bearing box; the central axis of the oil drain hole is parallel to the plane where the first semi-ring end face is located.

Further, the direction of the oil drain hole is opposite to the rotation direction of the oil retainer.

Further, the included angle between the central axis of the oil drain hole and the central axis of the oil retainer ring is 45-80 degrees.

Further, the included angle between the central axis of the oil drain hole and the central axis of the oil retainer ring is 60 degrees.

Further, the avoidance notch is arranged corresponding to the outer boss.

Further, the first semi-ring and the second semi-ring are made of carbon steel.

Further, the bolt is an inner hexagonal bolt.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the oil retainer is divided into the first half ring and the second half ring, and the first half ring and the second half ring are connected through the bolts, so that the oil retainer can be disassembled without disassembling a bearing of the fan in the use process, the disassembly and the maintenance are easy, and the maintenance cost of the fan is greatly reduced.

2. The outer boss of the first semi-ring is matched with the inner boss of the second semi-ring, and is used for limiting the positions of the first semi-ring and the second semi-ring, so that the oil retainer can be accurately positioned in installation or maintenance; meanwhile, the avoidance notch of the first semi-ring is arranged corresponding to the outer boss, so that the structure of the threaded through hole is more stable, and the deformation of the threaded through hole due to stress is avoided.

3. The oil retainer is provided with the oil drain hole, so that lubricating oil accumulated in the oil retainer can be drained into the bearing box; the oil drain hole is arranged at a specific angle and in a specific direction, so that a better oil drain effect is achieved in the running process of the fan.

4. According to the utility model, a gap of 0.5+/-0.1 mm is reserved between the end surfaces of the first semi-ring and the second semi-ring, and the first semi-ring and the second semi-ring are tightly screwed by the inner hexagonal bolts in use, so that the oil retainer is tightly combined with the main shaft, and the interference fit requirement of the main shaft and the oil retainer can be met without precise machining.

5. According to the utility model, the oil retainer is made of carbon steel, so that the wear resistance of the oil retainer is improved, and the service life of the oil retainer is effectively prolonged.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of the first half ring of the present utility model;

FIG. 3 is a schematic view of the structure in the direction B in FIG. 1;

FIG. 4 is an enlarged schematic view of the structure shown at A in FIG. 3;

FIG. 5 is a schematic diagram of the operation of the oil slinger of the present utility model;

reference numerals illustrate:

the novel anti-collision device comprises a first semi-ring, an 11-outer boss, a 12-avoiding notch, a 13-threaded through hole, a 2-second semi-ring, a 21-inner boss, a 3-bolt, a 4-oil drain hole and a 5-extending edge.

Detailed Description

The utility model is described in further detail below with reference to the attached drawings and specific examples:

the utility model relates to an oil retainer for fan lubrication, which is shown in figure 1, and comprises a first half ring 1 and a second half ring 2, wherein the first half ring 1 and the second half ring 2 are made of carbon steel; the structure of the first half ring 1 is shown in fig. 2, and both end surfaces of the first half ring 1 are provided with outer bosses 11; the end part of the first semi-ring 1 is provided with an avoidance notch 12 at one corner, and the avoidance notch 12 is correspondingly arranged with the outer boss 11 in the embodiment; a threaded through hole 13 is arranged between the avoidance notch 12 and the end face of the first half ring 1; the two end surfaces of the second semi-ring 2 are provided with inner bosses 21 matched with the outer bosses 11, the end surface of the second semi-ring 2 is provided with threaded blind holes, the threaded blind holes are connected with the threaded through holes 13 through bolts 3, and the bolts 3 are inner hexagonal bolts; a gap of 0.5+/-0.1 mm is reserved between the end faces of the first semi-ring 1 and the second semi-ring 2.

As shown in fig. 3, the first half ring 1 and the second half ring 2 are provided with an axially extending edge 5 far from the threaded through hole 13 for being matched with a bearing box end cover.

The middle parts of the first semi-ring 1 and the second semi-ring 2 are provided with oil drain holes 4 close to the overhanging edges 5, as shown in fig. 4, part of the oil drain holes 4 are structurally positioned on the overhanging edges 5, grooves are formed in the overhanging edges, the guiding function is achieved, and the central axis of the oil drain holes 4 is parallel to the plane where the end face of the first semi-ring 1 is positioned; the included angle between the central axis of the oil drain hole 4 and the central axis of the oil retainer is 45-80 degrees, the included angle is best in 60 degrees, the direction of the oil drain hole 4 is opposite to the rotation direction of the oil retainer according to the movement condition of a fan, and the oil drain hole is used for enabling lubricating oil accumulated in the extending edge 5 of the oil retainer to be discharged into a bearing box through the action of centrifugal force of a unit, so that the phenomenon of oil leakage caused by the accumulation of the lubricating oil can be effectively improved.

After the oil retainer is sleeved on the fan bearing in the use process, the inner hexagonal bolt is tightly clamped, so that the main shaft is in interference fit with the oil retainer, the installation process is simple, and the assembly efficiency can be effectively improved; when the oil retainer is damaged and needs to be maintained, the bearing is not required to be disassembled, and the oil retainer can be disassembled only by disassembling the hexagonal bolts in the oil retainer, so that the oil retainer is maintained or replaced.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made without departing from the spirit and scope of the utility model.

Claims (8)

1. The utility model provides a fan lubrication oil slinger which characterized in that:

the novel ring comprises a first half ring (1) and a second half ring (2), wherein outer bosses (11) are arranged on two end faces of the first half ring (1);

both end surfaces of the second semi-ring (2) are provided with inner bosses (21) matched with the outer bosses (11);

threaded blind holes are formed in two end faces of the second semi-ring (2);

two end parts of the first half ring (1) are provided with avoidance notches (12) at one corner part; a threaded through hole (13) is arranged between the avoidance notch (12) and the end face of the first half ring (1); the threaded through hole (13) is connected with the threaded blind hole through a bolt (3);

the outer side surfaces of the first half ring (1) and the second half ring (2) are provided with axial overhanging edges (5) far away from the threaded through holes (13) and are used for being matched with the end cover of the bearing box;

a gap of 0.5+/-0.1 mm is reserved between the end faces of the first semi-ring (1) and the second semi-ring (2).

2. The oil slinger for fan lubrication of claim 1, wherein:

oil drain holes (4) are formed in the middle parts of the first half ring (1) and the second half ring (2) and close to the overhanging edges (5), and the oil drain holes (4) are used for draining lubricating oil accumulated in the oil retainer into the bearing box; the central axis of the oil drain hole (4) is parallel to the plane of the end face of the first half ring (1).

3. The oil slinger for fan lubrication according to claim 2, wherein:

the direction of the oil drain hole (4) is opposite to the rotation direction of the oil retainer.

4. A slinger for fan lubrication as claimed in claim 3, wherein:

the included angle between the central axis of the oil drain hole (4) and the central axis of the oil retainer ring is 45-80 degrees.

5. The oil slinger for fan lubrication of claim 4, wherein:

the included angle between the central axis of the oil drain hole (4) and the central axis of the oil retainer ring is 60 degrees.

6. A slinger for fan lubrication according to any one of claims 1 to 5, wherein:

the avoidance notch (12) is arranged corresponding to the outer convex table (11).

7. The oil slinger for fan lubrication of claim 6, wherein:

the first half ring (1) and the second half ring (2) are made of carbon steel.

8. The oil slinger for fan lubrication of claim 7, wherein:

the bolt (3) is an inner hexagonal bolt.

Images