A bearing with filtering function

Abstract

The present invention provides a bearing with a filtering function, comprising an inner ring, an outer ring, and rollers, and further comprising a first retaining ring and a second retaining ring; the first retaining ring is fixed at both ends of the inner side of the outer ring, and the second retaining ring is fixed at both ends of the outer side of the inner ring, with the first retaining ring and the second retaining ring located at the same end forming a sliding seal between them, thereby constructing a lubrication cavity for accommodating the rollers; the first retaining ring and / or the second retaining ring are provided with an oil hole, a filter capable of covering the oil hole, and a diversion structure that promotes lubricating oil into the lubrication cavity. The present invention utilizes retaining rings with filtering and diversion functions to filter and circulate lubricating oil, allowing clean lubricating oil to repeatedly act on the contact surfaces between the bearing rollers and the inner and outer rings, achieving good lubrication and reducing bearing wear.

Description

Technical Field

[0001] The invention belongs to the technical field of filtering, and in particular relates to a bearing with filtering function. Background Art

[0002] In high-speed rotation, bearings reduce friction between rotating parts, thereby achieving efficient operation. Open bearings are lubricated by the lubricating oil in their environment. Dust and debris in the lubricating environment can repeatedly enter the bearing along with the lubricating oil, exacerbating wear between the bearing rollers and the inner and outer rings.

[0003] Therefore, how to prevent dust from entering the bearing along with the lubricating oil is an urgent problem to be solved. Summary of the Invention

[0004] The object of the present invention is to provide a bearing with a filtering function, which realizes the filtering and circulation of lubricating oil by arranging a retaining ring with filtering and diverting functions, thereby preventing serious wear of the bearing.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a bearing with a filtering function, comprising an inner ring, an outer ring and a roller, and further comprising a first retaining ring and a second retaining ring; the first retaining ring is fixed to the two ends of the inner side of the outer ring, and the second retaining ring is fixed to the two ends of the outer side of the inner ring, and a sliding seal is formed between the first retaining ring and the second retaining ring located at the same end to construct a lubrication cavity for accommodating the roller; the first retaining ring and / or the second retaining ring are provided with an oil hole, a filter screen capable of covering the oil hole and a diversion structure for promoting lubricating oil to enter the lubrication cavity.

[0006] Furthermore, the first retaining ring is provided with a first groove, a first oil hole located at the bottom of the first groove, a first filter capable of covering the first oil hole and a first guide vane located in the first groove; the first guide vanes on the two first retaining rings are arranged in the same direction.

[0007] Furthermore, the second retaining ring is provided with a second groove, a second oil hole located at the bottom of the second groove, a second filter capable of covering the second oil hole and a second guide vane located in the second groove; the second guide vanes on the two second retaining rings are arranged in the same direction.

[0008] Furthermore, the first retaining ring is provided with a first groove, a first oil hole located at the bottom of the first groove, a first filter capable of covering the first oil hole and a first guide vane located in the first groove; the first guide vanes on the two first retaining rings are arranged in the same direction.

[0009] The second retaining ring is provided with a second groove, a second oil hole located at the bottom of the second groove, a second filter screen capable of covering the second oil hole and a second guide vane located in the second groove; the second guide vanes on the two second retaining rings are arranged in the same direction.

[0010] Furthermore, the oil hole is located close to the connection position between the corresponding guide vane and the groove bottom.

[0011] Furthermore, the first retaining ring and the second retaining ring are slidingly connected via an anti-dislocation structure.

[0012] Furthermore, the anti-dislocation structure includes a circle of protrusions arranged on the inner side of the first retaining ring and a circle of grooves arranged on the outer side of the second retaining ring, and the protrusions and the grooves form a sliding engagement.

[0013] Furthermore, the protrusion has a head and a neck, and the width of the head is greater than the width of the neck; the groove has an opening and a receiving portion, the opening matches the neck, and the receiving portion matches the head.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention adopts a retaining ring with filtering and diverting functions to achieve the filtration and circulation of lubricating oil, so that the clean lubricating oil can repeatedly act on the contact surface between the bearing roller and the inner and outer rings, achieving good lubrication function and reducing bearing wear.

[0016] 2. The present invention sets different retaining ring structures according to different rotation modes, thereby meeting the filtering and lubrication requirements under any working conditions.

[0017] 3. The oil hole in the present invention is located at the end of the guide vane, which can better guide the lubricating oil into the interior of the bearing to achieve efficient lubrication.

[0018] 4. The present invention adopts an anti-dislocation structure to achieve the purpose of dynamic sealing connection and anti-detachment connection between the retaining rings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural perspective diagram of embodiment 1 of the present invention;

[0020] Figure 2 This is an exploded view of the structure of the first embodiment of the present invention;

[0021] Figure 3 This is a front view of the structure of embodiment 1 of the present invention;

[0022] Figure 4 for Figure 3 Structural cross-section view in the AA direction;

[0023] Figure 5 for Figure 4 A partial enlarged view of point B in the middle (the direction indicated by the arrow in the figure is the direction of lubricating oil flow);

[0024] Figure 6 for Figure 4 A partial enlarged view of point C in the middle (the direction indicated by the arrow in the figure is the direction of lubricating oil flow);

[0025] Figure 7 This is a schematic diagram of Example 1 in use (the direction indicated by the arrow in the figure is the direction of lubricating oil flow);

[0026] Figure 8 The corresponding embodiment of the present invention is Figure 5 A partial enlarged view (the direction indicated by the arrow in the figure is the direction of lubricating oil flow);

[0027] Figure 9 The corresponding embodiment of the present invention is Figure 6 A partial enlarged view (the direction indicated by the arrow in the figure is the direction of lubricating oil flow);

[0028] Figure 10 The corresponding embodiment of the present invention is Figure 5 A partial enlarged view (the direction indicated by the arrow in the figure is the direction of lubricating oil flow);

[0029] Figure 11 The corresponding embodiment of the present invention is Figure 6 A partial enlarged view (the arrow in the figure indicates the direction of lubricating oil flow). DETAILED DESCRIPTION

[0030] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0031] Example 1: This example is applicable to the working condition where the inner ring 2 is fixed and the outer ring 1 is rotating. Figures 1 to 7 As shown, this embodiment provides a bearing with a filtering function, including an inner ring 2, an outer ring 1, a roller 3, a first retaining ring 4 and a second retaining ring 5.

[0032] Both end faces of the outer ring 1 are provided with positioning steps, and the first retaining ring 4 is installed in the positioning steps at both ends of the outer ring 1 through an interference fit. The second retaining ring 5 is also installed at both ends of the outer side of the inner ring 2 through an interference fit, ensuring that the outer end faces of the outer ring 1, inner ring 2, first retaining ring 4, and second retaining ring 5 are flush with each other.

[0033] A sliding seal is formed between the first retaining ring 4 and the second retaining ring 5, thereby constructing a lubrication cavity 6 for accommodating the roller 3. Obviously, in a known bearing installation environment, the lubrication cavity 6 is filled with lubricating oil both inside and outside, so that the lubricating oil in the lubrication cavity 6 provides lubrication for the rolling of the roller 3.

[0034] The inner surface of the first retaining ring 4 is provided with a sealing groove 4.5, in which a sponge ring 7 is installed. The sponge ring 7 is in surface contact with the outer surface of the second retaining ring 5. During the rotation of the first retaining ring 4, the sponge ring 7 plays a role of sliding seal.

[0035] The first retaining ring 4 is equipped with a first groove 4.1, first oil holes 4.2 located at the bottom of the first groove 4.1, a first filter 8 capable of covering the first oil holes 4.2, and first guide vanes 4.3 located in the first groove 4.1. The first guide vanes 4.3 on both first retaining rings 4 are arranged in the same orientation. The first oil holes 4.2 and first guide vanes 4.3 are identical in number and evenly distributed along the circumference. The first filter 8 is an annular structure that covers all the first oil holes 4.2.

[0036] Both the first retaining ring 4 and the second retaining ring 5 are injection-molded parts, and the first retaining ring 4 is connected to the first filter screen 8 using an injection molding process. The outer edge of the first filter screen 8 is flush with the outer circumference of the first retaining ring 4 and is located on the inner end face of the first retaining ring 4. When the first retaining ring 4 is assembled in the positioning step, the portion of the first filter screen 8 near the outer edge is also tightly fixed to the end face of the positioning step.

[0037] As a preferred example, to better direct lubricating oil from the external environment of lubrication cavity 6 into lubrication cavity 6, the first oil hole is located near the connection between the corresponding first guide vane 4.3 and the groove bottom. When outer ring 1 rotates, external lubricating oil quickly accumulates at the connection between the first guide vane 4.3 and the groove bottom. At this time, because the first oil hole 4.2 is located at this location, the lubricating oil quickly enters lubrication cavity 6.

[0038] Because the first guide vanes 4.3 of the two first retaining rings 4 are arranged in the same direction, during the rotation of the outer ring 1, lubricating oil enters the lubrication chamber 6 through the first oil holes 4.2 on one first retaining ring 4 and then exits through the first oil holes 4.2 on the other first retaining ring 4. This circulation of lubricating oil between the inside and outside of the lubrication chamber 6 allows the heat generated by the rotation of the rollers 3 to be dissipated through the flow of lubricating oil, thereby reducing the temperature within the lubrication chamber 6.

[0039] As a preferred example, the first retaining ring 4 and the second retaining ring 5 are further connected by a sliding connection via an anti-dislocation structure. Specifically, the anti-dislocation structure includes a ring of protrusions 4.4 provided on the inner side of the first retaining ring 4 and a ring of retaining grooves 5.4 provided on the outer side of the second retaining ring 5. The protrusions 4.4 and the grooves form a sliding engagement. When the first retaining ring 4 and the second retaining ring 5 are connected by the dislocation structure, they can form a limit in the direction parallel to the axis, preventing the first retaining ring 4 and the second retaining ring 5 from disengaging during bearing operation, thereby avoiding affecting the normal operation of the bearing.

[0040] To facilitate assembly, as a preferred embodiment, protrusion 4.4 has a head and a neck, with the head being wider than the neck. The recess has an opening and a receiving portion, with the opening matching the neck and the receiving portion matching the head. Protrusion 4.4 and retaining groove 5.4 are connected by a clearance fit. Since the gap between them communicates with lubrication chamber 6, some lubricant enters the gap, providing lubrication for both protrusion 4.4 and retaining groove 5.4.

[0041] Example 2: Figure 8 and 9 As shown, this embodiment differs from the first embodiment in that it is suitable for operating conditions where the outer ring 1 is fixed and the inner ring 2 rotates. Specifically, the second retaining ring 5 is provided with a second groove 5.1, a second oil hole 5.2 located at the bottom of the second groove 5.1, a second filter 9 capable of covering the second oil hole 5.2, and a second guide vane 5.3 located in the second groove 5.1. The second guide vanes 5.3 on both second retaining rings 5 are arranged in the same direction.

[0042] The second oil holes 5.2 and the second guide vanes 5.3 have the same number and are evenly distributed along the circumferential direction. The second filter screen 9 is an annular structure that covers all the second oil holes 5.2.

[0043] The second retaining ring 5 is connected to the second filter screen 9 by injection molding. The inner edge of the second filter screen 9 is flush with the inner circular surface of the second retaining ring 5 and is located on the inner end surface of the second retaining ring 5.

[0044] That is, during operation of the bearing in this embodiment, external lubricating oil enters the lubrication cavity 6 through the second oil hole 5.2 on one of the second retaining rings 5, and is then discharged from the second oil hole 5.2 on the other second retaining ring 5. Example

[0045] like Figure 10 and 11As shown, this embodiment differs from the first embodiment in that it is applicable to operating conditions where both the outer ring 1 and the inner ring 2 are rotating. Specifically, the first retaining ring 4 is provided with a first groove 4.1, a first oil hole 4.2 located at the bottom of the first groove 4.1, a first filter 8 capable of covering the first oil hole 4.2, and a first guide vane 4.3 located in the first groove 4.1. The first guide vanes 4.3 on both first retaining rings 4 are arranged in the same direction.

[0046] Similarly, the second retaining ring 5 is provided with a second groove 5.1, a second oil hole 5.2 located at the bottom of the second groove 5.1, a second filter 9 capable of covering the second oil hole 5.2, and a second guide vane 5.3 located in the second groove 5.1. The second guide vanes 5.3 on both second retaining rings 5 are arranged in the same direction.

[0047] If the outer ring 1 and the inner ring 2 rotate in the same direction, the first guide vanes 4.3 and the second guide vanes 5.3 are arranged in the same direction. Similarly, if the outer ring 1 and the inner ring 2 rotate in opposite directions, the first guide vanes 4.3 and the second guide vanes 5.3 are arranged in opposite directions. This arrangement ensures that the lubricating oil circulates in the same direction.

[0048] In this embodiment, the arrangement of the relevant components and structures is the same as that of the first and second embodiments, so they will not be described in detail.

[0049] It should be noted that the diameter difference between the inner and outer rings 1 of the bearing in the present invention should be greater than 10 mm, so that there is enough space to install the retaining ring.

[0050] Anything not described in detail in the present invention is well known to those skilled in the art.

[0051] It should be noted that the above specific implementation methods are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified and replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A bearing with a filtering function, used in a working condition where both the inside and outside are filled with lubricating oil, comprising an inner ring (2), an outer ring (1) and a roller (3), characterized in that: The invention also includes a first retaining ring (4) and a second retaining ring (5); the first retaining ring (4) is fixed at both ends of the inner side of the outer ring (1), and the second retaining ring (5) is fixed at both ends of the outer side of the inner ring (2); a sliding seal is formed between the first retaining ring (4) and the second retaining ring (5) located at the same end, thereby constructing a lubrication cavity (6) for accommodating the roller (3); the first retaining ring (4) is provided with an oil hole, a filter screen capable of covering the oil hole, and a guide structure for promoting lubricating oil to enter the lubrication cavity (6); the first retaining ring (4) is provided with a first groove (4.1), a first oil hole (4.2) located at the bottom of the first groove (4.1), a first filter screen (8) capable of covering the first oil hole (4.2), and a first guide vane (4.3) located in the first groove (4.1); the first guide vanes (4.3) on the two first retaining rings (4) are arranged in the same direction.

2. A bearing with a filtering function, used in a working condition where both the inside and outside are filled with lubricating oil, comprising an inner ring (2), an outer ring (1) and a roller (3), characterized in that: The invention also includes a first retaining ring (4) and a second retaining ring (5); the first retaining ring (4) is fixed at both ends of the inner side of the outer ring (1), and the second retaining ring (5) is fixed at both ends of the outer side of the inner ring (2); a sliding seal is formed between the first retaining ring (4) and the second retaining ring (5) located at the same end, thereby constructing a lubrication cavity (6) for accommodating the roller (3); the second retaining ring (5) is provided with an oil hole, a filter screen capable of covering the oil hole, and a guide structure for promoting lubricating oil to enter the lubrication cavity (6); the second retaining ring (5) is provided with a second groove (5.1), a second oil hole (5.2) located at the bottom of the second groove (5.1), a second filter screen (9) capable of covering the second oil hole (5.2), and a second guide vane (5.3) located in the second groove (5.1); the second guide vanes (5.3) on the two second retaining rings (5) are arranged in the same direction.

3. A bearing with a filtering function, used in a working condition where both the inside and outside are filled with lubricating oil, comprising an inner ring (2), an outer ring (1) and a roller (3), characterized in that: It also includes a first retaining ring (4) and a second retaining ring (5); the first retaining ring (4) is fixed at both ends of the inner side of the outer ring (1), and the second retaining ring (5) is fixed at both ends of the outer side of the inner ring (2); a sliding seal is formed between the first retaining ring (4) and the second retaining ring (5) located at the same end, thereby constructing a lubrication cavity (6) for accommodating the roller (3); the first retaining ring (4) and the second retaining ring (5) are provided with an oil hole, a filter screen capable of covering the oil hole, and a guide structure for promoting lubricating oil to enter the lubrication cavity (6); the first retaining ring (4) is provided with a first groove (4.1), a first oil hole (4.2) located at the bottom of the first groove (4.1), a first filter screen (8) capable of covering the first oil hole (4.2), and a first guide vane (4.3) located in the first groove (4.1); the first guide vanes (4.3) on the two first retaining rings (4) are arranged in the same direction; The second retaining ring (5) is provided with a second groove (5.1), a second oil hole (5.2) located at the bottom of the second groove (5.1), a second filter (9) capable of covering the second oil hole (5.2), and a second guide vane (5.3) located in the second groove (5.1); the second guide vanes (5.3) on the two second retaining rings (5) are arranged in the same direction.

4. A bearing with a filtering function according to any one of claims 1 to 3, characterized in that: The oil hole is located near the connection position between the corresponding guide vane and the groove bottom.

5. A bearing with a filtering function according to any one of claims 1 to 3, characterized in that: The first retaining ring (4) and the second retaining ring (5) are also connected in a sliding manner via an anti-dislocation structure.

6. The bearing with filtering function according to claim 5, characterized in that: The anti-dislocation structure comprises a circle of protrusions (4.4) arranged on the inner side of the first retaining ring (4) and a circle of clamping grooves (5.4) arranged on the outer side of the second retaining ring (5), wherein the protrusions (4.4) and the grooves form a sliding clamping connection.

7. The bearing with filtering function according to claim 6, characterized in that: The protrusion (4.4) has a head and a neck, the width of the head is greater than the width of the neck; the groove has an opening and a receiving portion, the opening matches the neck, and the receiving portion matches the head.

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