Bearing sealing assembly

Abstract

The utility model relates to a bearing sealing assembly which comprises a bearing base, a bearing cover plate and a thrust self-aligning roller bearing, the thrust self-aligning roller bearing is installed in the bearing base, the bottom end of a stirring shaft is arranged in an inner ring of the thrust self-aligning roller bearing in an embedded mode, and a convex ring is arranged at the lower end of the stirring shaft. The convex ring is supported and positioned through the top of the inner ring of the thrust self-aligning roller bearing; the bearing cover plate is of an annular structure and is arranged at the upper end of the bearing base, and the bearing cover plate and the bearing base are connected and fixed through a plurality of fastening bolts; a circle of protruding part is arranged on the inner wall of the bearing cover plate and located above the thrust self-aligning roller bearing, a framework oil seal is arranged on the inner wall of the protruding part, a baffle ring part is arranged at the upper end of the inner wall of the protruding part, and the thrust self-aligning roller bearing is arranged to support the lower end of the stirring shaft and provide axial supporting force for the stirring shaft. And the slight radial movement of the stirring shaft can be compensated, so that the stirring shaft can be suitable for supergravity stirring operation, the abrasion of the bearing is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of pulping equipment technology, and in particular to a bearing sealing assembly used in a pulping mixer. Background Technology

[0002] Currently, during the preparation of slurry through high-gravity mixing, the mixing shaft of the slurry mixer, driven by a rotating device, is subjected to 80 times its own weight, making it prone to misalignment and wobbling. This can lead to misalignment at both ends of the mixing shaft, causing wear on the upper bearing of the mixing rod. Therefore, a bearing seat needs to be installed at the bottom of the mixer to support and position the lower end of the mixing shaft. Traditional bearing sealing assemblies, under an 80g working environment, do not provide sufficient support, easily causing the mixing blades to jam or seize, resulting in malfunction. Therefore, those skilled in the art need to address these problems by making improvements. Utility Model Content

[0003] To address the aforementioned problems, this utility model discloses a bearing sealing assembly that provides axial support to the stirring shaft through a thrust self-aligning roller bearing, making it suitable for high-gravity stirring operations and solving the problem of easy bearing wear.

[0004] The specific technical solution is as follows:

[0005] A bearing sealing assembly includes a bearing base, a bearing cover plate, and a thrust self-aligning roller bearing. The thrust self-aligning roller bearing is installed in the bearing base. The bottom end of a stirring shaft is embedded in the inner ring of the thrust self-aligning roller bearing, and a convex ring is provided at the lower end of the stirring shaft. The convex ring is supported and positioned by the top of the inner ring of the thrust self-aligning roller bearing. The bearing cover plate has a ring-shaped structure and is located at the upper end of the bearing base. The bearing cover plate and the bearing base are connected and fixed by a number of fastening bolts. The inner wall of the bearing cover plate above the thrust self-aligning roller bearing has a raised portion. A skeleton oil seal is provided on the inner wall of the raised portion, and a retaining ring is provided at the upper end of the inner wall of the raised portion for positioning the skeleton oil seal, so that the inner side of the skeleton oil seal fits against the convex ring of the stirring shaft to achieve a seal, preventing slurry intrusion and grease leakage.

[0006] Furthermore, the bearing cover plate has longitudinally opened disassembly screw holes at both ends, and disassembly bolts are threaded into each of the disassembly screw holes.

[0007] Furthermore, both the fastening bolt and the disassembly bolt are fitted with washers.

[0008] Furthermore, a sealing gasket is provided between the bearing base and the bearing cover plate, and the sealing gasket has holes for fastening bolts to pass through.

[0009] Furthermore, the bearing base has an internal mounting groove for mounting the outer ring of the thrust self-aligning roller bearing, and the size of the mounting groove is adapted to the size of the outer ring of the thrust self-aligning roller bearing.

[0010] Furthermore, a gap is left between the inner wall of the bearing cover plate and the protrusion and the inner ring of the thrust self-aligning roller bearing.

[0011] The beneficial effects of this utility model are reflected in:

[0012] In this invention, a thrust self-aligning roller bearing is installed in the bearing housing to support the lower end of the stirring shaft, thereby providing axial support force for the stirring shaft, playing a supporting and positioning role, and compensating for slight radial movement of the stirring shaft, making the stirring shaft suitable for ultra-gravity stirring operations, reducing bearing wear, and improving service life. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present invention.

[0014] Figure 2 This is the front view of the present invention.

[0015] Figure 3 for Figure 2 Sectional view along line AA.

[0016] Figure 4 This is a schematic diagram of the structure when the stirring shaft and the bearing sealing assembly are connected in this utility model.

[0017] Explanation of reference numerals in the attached drawings: 1. Bearing base; 11. Mounting groove; 2. Bearing cover plate; 21. Protrusion; 22. Retaining ring; 3. Thrust self-aligning roller bearing; 4. Agitator shaft; 41. Convex ring; 5. Sealing gasket; 6. Skeleton oil seal; 7. Fastening bolt; 71. Washer; 8. Removal bolt. Detailed Implementation

[0018] To make the technical solution of this utility model clearer and more explicit, the utility model will be further described below with reference to the accompanying drawings. Any solution derived by equivalent substitution and conventional reasoning of the technical features of this utility model falls within the protection scope of this utility model. The fixed connections and fixed settings mentioned in this utility model are all common connection methods in the mechanical field, including welding, bolt and nut connections, and screw connections.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Please see the appendix Figure 1-4 This embodiment provides a bearing sealing assembly, including a bearing base 1, a bearing cover plate 2, and a thrust self-aligning roller bearing 3. The bearing base 1 has a circular mounting groove 11 inside, which is used to mount the outer ring of the thrust self-aligning roller bearing 3 and is filled with grease for lubrication. The size of the mounting groove 11 is adapted to the size of the outer ring of the thrust self-aligning roller bearing 3. The bottom end of a stirring shaft 4 is embedded in the inner ring of the thrust self-aligning roller bearing 3, and a convex ring 41 is provided at the lower end of the stirring shaft 4. The convex ring 41 is supported and positioned by the top of the inner ring of the thrust self-aligning roller bearing 3, thereby providing axial support force to the stirring shaft 4 and serving a supporting and positioning function. The bearing cover plate 2 has an annular structure and is located on the upper end of the bearing base 1. The bearing cover plate 2 and the bearing base 1 are fixed together by four fastening bolts 7, which are arranged symmetrically in pairs. The inner wall of the bearing cover plate 2 is provided with a raised part 21 above the thrust self-aligning roller bearing 3. A skeleton oil seal 6 is provided on the inner wall of the raised part 21, and a retaining ring 22 is provided at the upper end of the inner wall of the raised part 21 for positioning the skeleton oil seal 6, so that the inner side of the skeleton oil seal 6 fits against the convex ring 41 of the stirring shaft 4 to achieve a seal and prevent slurry intrusion and grease leakage.

[0021] In this embodiment, the bearing cover plate 2 has longitudinally formed disassembly screw holes at both ends, which penetrate the bearing cover plate 2. Disassembly bolts 8 are threaded into each of the disassembly screw holes, and the disassembly bolts 8 serve to seal the disassembly screw holes. Due to prolonged connection and fixation, the bearing cover plate 2 and the bearing base 1 become relatively tightly connected and cannot be separated. Therefore, after removing all the fastening bolts 7 and disassembly bolts 8, a long screw is inserted into the disassembly screw holes to pry open the bearing base 1, thus separating the two.

[0022] In this embodiment, a rubber sealing gasket 5 is provided between the bearing base 1 and the bearing cover plate 2, and the sealing gasket 5 has a hole for the fastening bolt 7 to pass through. The sealing gasket 5 is sealed by clamping the bearing base 1 and the bearing cover plate 2.

[0023] Meanwhile, gaskets 71 are fitted on both the fastening bolt 7 and the loosening bolt 8 to further improve the sealing effect and prevent slurry from entering the interior through the bolt hole.

[0024] The inner wall of the bearing cover plate 2 and the protrusion 21 are both reserved with the inner ring of the thrust self-aligning roller bearing 3 to allow the inner ring to be aligned and to compensate for the slight radial movement of the stirring shaft 4.

[0025] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A bearing sealing assembly, characterized in that, The bearing assembly includes a bearing base (1), a bearing cover plate (2), and a thrust self-aligning roller bearing (3). The thrust self-aligning roller bearing (3) is installed in the bearing base (1). The bottom end of a stirring shaft (4) is embedded in the inner ring of the thrust self-aligning roller bearing (3), and a convex ring (41) is provided at the lower end of the stirring shaft (4). The convex ring (41) is supported and positioned by the top of the inner ring of the thrust self-aligning roller bearing (3). The bearing cover plate (2) has a ring-shaped structure and is located at the upper end of the bearing base (1), and the shaft... The cover plate (2) and the bearing base (1) are connected and fixed by several fastening bolts (7); the inner wall of the bearing cover plate (2) is provided with a ring of protrusions (21) above the thrust self-aligning roller bearing (3), and a ring of skeleton oil seal (6) is provided on the inner wall of the protrusion (21), and a ring of retaining ring (22) for positioning the skeleton oil seal (6) is provided at the upper end of the inner wall of the protrusion (21), so that the inner side of the skeleton oil seal (6) fits against the convex ring (41) of the stirring shaft (4) to achieve sealing.

2. A bearing sealing assembly as described in claim 1, characterized in that, The bearing cover plate (2) has longitudinally opened disassembly screw holes at both ends, and disassembly bolts (8) are threaded into each of the disassembly screw holes.

3. A bearing sealing assembly as described in claim 2, characterized in that, Washers are fitted on both the fastening bolt (7) and the disassembly bolt (8).

4. A bearing sealing assembly as described in claim 1, characterized in that, A sealing gasket (5) is provided between the bearing base (1) and the bearing cover plate (2), and the sealing gasket (5) has a hole for the fastening bolt (7) to pass through.

5. A bearing sealing assembly as described in claim 1, characterized in that, The bearing base (1) has an installation groove (11) inside for installing the outer ring of the thrust self-aligning roller bearing (3), and the size of the installation groove (11) is adapted to the size of the outer ring of the thrust self-aligning roller bearing (3).

6. A bearing sealing assembly as described in claim 1, characterized in that, The inner wall of the bearing cover plate (2) and the protrusion (21) are both separated from the inner ring of the thrust self-aligning roller bearing (3).

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