Sealing structure for bearing end cover of air blower

Abstract

The utility model discloses an air blower bearing end cover sealing structure, and belongs to the technical field of bearing sealing. The air blower bearing end cover sealing structure comprises a bearing shell, a bearing body rotationally installed in the bearing shell, an inner cavity formed in the bearing shell, a first rotating pipe fixedly installed on the bearing body, a sealing sleeve arranged on one side of the bearing shell and an adjusting mechanism arranged on the sealing sleeve and used for controlling the flow of lubricating oil. The adjusting mechanism comprises a runner pipe fixedly mounted on the sealing sleeve and an injection pipe rotationally mounted on the runner pipe; through cooperative use of all the devices and arrangement of the adjusting mechanism, the situation that dust particles enter the injection pipe in the using process is reduced, and therefore the situation that the dust particles permeate into a bearing shell along with lubricating oil when the lubricating oil is added is reduced, and the service life of a bearing is prolonged; and the fault probability of the bearing is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing seals, in particular to a blower bearing end cover sealing structure. Background Art

[0002] A blower operates by rotating the rotor eccentrically within the cylinder, causing the volume changes between the blades in the rotor slots to draw, compress, and expel air. The oil tank that lubricates the rotor shaft and other components during operation is typically located within the blower base. During operation, the oil tank utilizes the pressure differential across the blower to automatically deliver lubricant to the drip nozzle, dripping into the cylinder to reduce friction and noise while preventing backflow of gas. The rotor in existing blowers is mounted within the blower body via bearings. The bearing end caps, located outside the bearings, are essential components of the blower.

[0003] Upon investigation, a Chinese utility model patent discloses a blower bearing end cover sealing structure (publication number: CN221879774U), which includes a bearing housing, a bearing body, a side sealing mechanism, an adjustment mechanism and a side fixing mechanism. The side sealing mechanism includes an internal cavity, a first rotating tube, a sealing groove, a sealing sleeve and a sealing plate. The adjustment mechanism includes a horizontal plate, a circulation tube, an inner tube, a rotating tube, a movable tube, an inner fixing plate, a movable plate and a movable rod. The side fixing mechanism includes a sealing end cover, a second rotating tube, a sealing ring and a locking rod.

[0004] In the above patent, the flow rate of lubricating oil can be accurately adjusted by setting the horizontal plate, circulation tube, inner tube, rotating tube, movable tube, inner fixed plate, movable plate and movable rod to meet the lubrication needs of the bearing under different working conditions. The cooperation of the injection tube and the side ring makes the injection of lubricating oil more convenient and direct, which is conducive to improving the lubrication efficiency. However, when no lubricating oil is added, dust particles are likely to invade the interior. When lubricating oil is added subsequently, these dust particles may penetrate into the bearing housing together with the lubricating oil. Once entering, the dust particles will directly contact the rolling elements and tracks inside the bearing, thereby aggravating the degree of wear. This wear may not only shorten the expected service life of the bearing, but also induce the occurrence of bearing failure.

[0005] Therefore, the utility model provides a blower bearing end cover sealing structure to solve the above problems. Utility Model Content

[0006] (1) Technical problems solved

[0007] The utility model provides a blower bearing end cover sealing structure, aiming to solve the problems raised in the background technology.

[0008] (2) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blower bearing end cover sealing structure, which includes a bearing housing, a bearing body rotatably mounted inside the bearing housing, an internal cavity opened inside the bearing housing, a first rotating tube fixedly mounted on the bearing body, a sealing sleeve arranged on one side of the bearing housing, and an adjusting mechanism arranged on the sealing sleeve for controlling the flow of lubricating oil.

[0010] The adjustment mechanism includes a circulation tube fixedly mounted on the sealing sleeve, an injection tube rotatably mounted on the circulation tube, a clamping plate fixedly mounted on the injection tube, a sealing cover clamped to the injection tube via the clamping plate, a clamping groove provided on the inner wall of the sealing cover, a threaded barrel screwed to the inside of the circulation tube, a slider fixedly mounted on the inner wall of the threaded barrel, a sliding groove provided on the injection tube for the slider to slide, and a plurality of injection holes provided on the threaded barrel.

[0011] As a preferred technical solution of the present application, a plurality of sealing plates are fixedly connected to the interior of the sealing sleeve, a plurality of sealing grooves for inserting the sealing plates are opened on the first rotating tube, and bolts are screwed into the interior of the sealing sleeve.

[0012] As a preferred technical solution of the present application, the bolt passes through the sealing sleeve, and threaded holes that are compatible with the bolt are provided inside the sealing sleeve and the bearing housing.

[0013] As a preferred technical solution of the present application, a sealing end cover is screwed onto the side of the bearing housing away from the sealing sleeve, and a first sealing ring is provided on the side surface of the sealing end cover, which fits the inner wall of the bearing housing.

[0014] As a preferred technical solution of the present application, a second rotating tube is rotatably connected to the interior of the bearing housing, and one side of the bearing housing is fitted with one side of the sealing end cover.

[0015] As a preferred technical solution of the present application, a connecting block is rotatably connected to the interior of the bearing housing, and a second sealing ring is provided between the connecting block and the bearing body.

[0016] (3) Beneficial effects

[0017] The utility model has a simple structure and is easy to use. By setting the adjustment mechanism, it reduces the situation where dust particles enter the injection tube during use, thereby reducing the situation where dust particles penetrate into the bearing housing together with the lubricating oil when adding lubricating oil, thereby increasing the service life of the bearing and reducing the probability of bearing failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A structural diagram of a blower bearing end cover sealing structure Figure 1 ;

[0019] Figure 2 A structural diagram of a blower bearing end cover sealing structure Figure 2 ;

[0020] Figure 3 The figure is a cross-sectional schematic diagram of a bearing housing in a blower bearing end cover sealing structure;

[0021] Figure 4 A schematic cross-sectional view of a flow tube in a blower bearing end cover sealing structure;

[0022] Figure 5 This is a schematic diagram of the installation of a clamping plate in a blower bearing end cover sealing structure;

[0023] Figure 6 This is a structural schematic diagram of a threaded barrel in a blower bearing end cover sealing structure.

[0024] In the picture:

[0025] 1. Bearing housing; 2. Bearing body; 3. Internal cavity; 4. First rotating tube; 5. Sealing sleeve; 6. Circulation tube; 7. Injection tube; 8. Snap-in plate; 9. Sealing cover; 10. Snap-in groove; 11. Threaded barrel; 12. Slider; 13. Slide groove; 14. Injection hole; 15. Sealing plate; 16. Sealing groove; 17. Bolt; 18. Sealing end cover; 19. First sealing ring; 20. Second rotating tube; 21. Connecting block; 22. Second sealing ring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The utility model provides a blower bearing end cover sealing structure, such as Figure 1 、 Figure 4 、 Figure 5 and Figure 6 As shown, the blower bearing end cover sealing structure includes a bearing housing 1, a bearing body 2 rotatably mounted inside the bearing housing 1, an internal cavity 3 opened inside the bearing housing 1, a first rotating tube 4 fixedly mounted on the bearing body 2, a sealing sleeve 5 arranged on one side of the bearing housing 1, and an adjusting mechanism arranged on the sealing sleeve 5 for controlling the flow of lubricating oil.

[0028] The adjustment mechanism includes a circulation tube 6 fixedly mounted on the sealing sleeve 5, an injection tube 7 rotatably mounted on the circulation tube 6, a clamping plate 8 fixedly mounted on the injection tube 7, a sealing cover 9 clamped on the injection tube 7 through the clamping plate 8, a clamping groove 10 opened on the inner wall of the sealing cover 9, a threaded barrel 11 screwed to the inside of the circulation tube 6, a slider 12 fixedly mounted on the inner wall of the threaded barrel 11, a slide groove 13 opened on the injection tube 7 for the slider 12 to slide, and a plurality of injection holes 14 opened on the threaded barrel 11.

[0029] When the blower bearing end cover sealing structure is in use, the bearing housing 1 is placed in a suitable position. Then, when the operation of the mechanism needs to be adjusted, the sealing cover 9 is manually rotated at a certain angle, and the inclined surface of the clamping groove 10 provided inside the sealing cover 9 contacts the inclined surface of the clamping plate 8. After rotating at a certain angle, the clamping plate 8 no longer limits the sealing cover 9. Then, the sealing cover 9 is directly taken out, and the injection pipe 7 is manually rotated. Through the cooperation between the slider 12 and the slide groove 13, the injection pipe 7 drives the threaded barrel 11 to rotate synchronously while rotating. The rotation of the threaded barrel 11 makes the threaded barrel 11 move inside the circulation pipe 6, and the injection hole 14 on the threaded barrel 11 will gradually enter the bottom of the circulation pipe 6. Then, by injecting lubricating oil into the injection pipe 7, the lubricating oil is injected into the injection pipe 7. Inside, it enters the threaded barrel 11 through the injection pipe 7, and then enters the bottom of the circulation pipe 6 through the injection hole 14 on the threaded barrel 11, and then enters the internal cavity 3 through the circulation pipe 6. By adjusting the position of the threaded barrel 11, the flow of lubricating oil is adjusted. After the injection of lubricating oil is completed, the injection pipe 7 is manually rotated in the opposite direction, and the threaded barrel 11 will eventually return to its initial position. Then, the snap-fit ​​groove 10 on the sealing cover 9 is manually aligned with the snap-fit ​​plate 8, and then the sealing cover 9 is snapped onto the injection pipe 7 to prevent dust particles from entering the interior of the injection pipe 7 when not in use, and reduce the situation where dust particles penetrate into the bearing housing 1 together with the lubricating oil when adding lubricating oil, thereby increasing the service life of the bearing and reducing the probability of bearing failure.

[0030] Furthermore, in order to seal one side of the bearing housing 1, as Figure 1 、 Figure 2 and Figure 3 As shown, a plurality of sealing plates 15 are fixedly connected to the interior of the sealing sleeve 5 , a plurality of sealing grooves 16 for inserting the sealing plates 15 are opened on the first rotating tube 4 , and bolts 17 are screwed into the interior of the sealing sleeve 5 .

[0031] The bolt 17 passes through the sealing sleeve 5 , and threaded holes matching the bolt 17 are provided inside the sealing sleeve 5 and the bearing housing 1 .

[0032] When the blower bearing end cover sealing structure is in use, the sealing sleeve 5 is fixedly installed on the side of the bearing housing 1 and fixed by bolts 17 to ensure the stability of the sealing sleeve 5. The sealing plate 15 is installed inside the sealing sleeve 5. When the bearing body 2 rotates, multiple groups of sealing plates 15 rotate in multiple groups of sealing grooves 16. The tight plug-in fit between the sealing plates 15 and the sealing grooves 16 achieves a good sealing effect, effectively prevents lubricating oil leakage, and maintains the sealing of the internal cavity 3.

[0033] In order to facilitate the replacement and maintenance of the bearing body 2, Figure 1 、 Figure 2 and Figure 3 As shown, a sealing end cover 18 is screwed to the side of the bearing housing 1 away from the sealing sleeve 5 , and a first sealing ring 19 is provided on the side surface of the sealing end cover 18 , which fits the inner wall of the bearing housing 1 .

[0034] The second rotating tube 20 is rotatably connected to the interior of the bearing housing 1 , and one side of the bearing housing 1 is in contact with one side of the sealing end cover 18 .

[0035] A connecting block 21 is rotatably connected to the interior of the bearing housing 1 , and a second sealing ring 22 is provided between the connecting block 21 and the bearing body 2 .

[0036] When the blower bearing end cover sealing structure is in use, the bearing body 2 rotates inside the bearing housing 1, and the rotation of the bearing body 2 drives the first rotating tube 4 and the second rotating tube 20 to rotate synchronously. The first sealing ring 19 and the second sealing ring 22 ensure the sealing of the internal cavity 3 to prevent lubricating oil leakage. The sealing end cover 18 and the first sealing ring 19 fix the bearing body 2 inside the bearing housing 1 to ensure stable operation of the bearing. When maintenance or replacement of the bearing body 2 is required, the sealing end cover 18 is rotated to push the first sealing ring 19 to move, release the bearing body 2, and then the sealing sleeve 5 on the other side is disassembled, so that the bearing body 2 can be taken out from the inside of the bearing housing 1 for maintenance or replacement operations.

[0037] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A blower bearing end cover sealing structure, characterized by: The blower bearing end cover sealing structure comprises a bearing housing (1), a bearing body (2) rotatably mounted inside the bearing housing (1), an internal cavity (3) provided inside the bearing housing (1), a first rotating tube (4) fixedly mounted on the bearing body (2), a sealing sleeve (5) arranged on one side of the bearing housing (1), and a regulating mechanism arranged on the sealing sleeve (5) for controlling the flow rate of lubricating oil; The regulating mechanism comprises a circulation tube (6) fixedly mounted on the sealing sleeve (5), an injection tube (7) rotatably mounted on the circulation tube (6), a clamping plate (8) fixedly mounted on the injection tube (7), a sealing cover (9) clamped on the injection tube (7) via the clamping plate (8), a clamping groove (10) provided on the inner wall of the sealing cover (9), a threaded barrel (11) screwed into the interior of the circulation tube (6), a slider (12) fixedly mounted on the inner wall of the threaded barrel (11), a sliding groove (13) provided on the injection tube (7) for the slider (12) to slide, and a plurality of injection holes (14) provided on the threaded barrel (11).

2. The blower bearing end cover sealing structure according to claim 1, characterized in that: A plurality of sealing plates (15) are fixedly connected to the interior of the sealing sleeve (5); a plurality of sealing grooves (16) for inserting the sealing plates (15) are provided on the first rotating tube (4), and bolts (17) are screwed to the interior of the sealing sleeve (5).

3. The blower bearing end cover sealing structure according to claim 2, characterized in that: The bolt (17) passes through the sealing sleeve (5), and threaded holes matching the bolt (17) are provided inside the sealing sleeve (5) and the bearing housing (1).

4. The blower bearing end cover sealing structure according to claim 1, characterized in that: A sealing end cover (18) is screwed onto the side of the bearing housing (1) away from the sealing sleeve (5), and a first sealing ring (19) is provided on the side surface of the sealing end cover (18), and the first sealing ring (19) is in contact with the inner wall of the bearing housing (1).

5. The blower bearing end cover sealing structure according to claim 4, characterized in that: The bearing housing (1) is rotatably connected to a second rotating tube (20), and one side of the bearing housing (1) is in contact with one side of the sealing end cover (18).

6. The blower bearing end cover sealing structure according to claim 5, characterized in that: A connecting block (21) is rotatably connected to the interior of the bearing housing (1), and a second sealing ring (22) is provided between the connecting block (21) and the bearing body (2).

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