Thin oil lubrication sealing device for vacuum roller liner bearing

Abstract

The utility model relates to a vacuum roll liner bearing thin oil lubrication sealing device, which comprises a shell, two end covers, a bearing and a shaft body, the number of the end covers is two, the two end covers are respectively and fixedly arranged on the two sides of the shell, and the axle centers of the two end covers are respectively provided with a mounting hole. The utility model relates to the technical field of thin oil lubrication sealing devices. According to the thin oil lubrication sealing device for the vacuum roller liner bearing, the spring box, the pressure spring and the sealing cover are sequentially arranged on the outer surface of the shaft body in a sleeving mode, the spring box makes contact with the side wall of the bearing, then the two ends of the shaft body are sleeved with the two end covers correspondingly, and then the two end covers are fixed to the two ends of the shell correspondingly; the sealing gaskets are arranged at the contact positions of the end cover and the shell, under the action of the pressure spring, the sealing cover is pushed to make contact with the side wall of the end cover all the time, oil injected into the shell cannot make contact with the oil seal all the time, and thin oil can be effectively prevented from flowing out through a gap between the oil seal and the shaft body.

Description

Technical Field

[0001] The utility model relates to the technical field of thin oil lubrication sealing devices, in particular to a thin oil lubrication sealing device for a vacuum roller inner liner bearing. Background Art

[0002] The vacuum roller is a roller-shaped device that uses vacuum technology to absorb and fix materials. The roller surface is provided with suction holes that penetrate the roller surface, and there are suction elements inside to generate negative pressure through the vacuum system, thereby adsorbing the material.

[0003] Bearings are important components in mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy.

[0004] In the vacuum roller, since the inner liner of the vacuum roller needs to rotate at high speed to generate negative pressure inside the vacuum roller to adsorb and fix the material, bearings are installed at both ends of the roller liner to support the weight of the roller liner and allow it to rotate freely.

[0005] In order to ensure the stable use of bearings, it is necessary to regularly add lubricating oil to the bearings. Currently, there are roughly two types of commonly used bearing lubricating oils: dry oil and thin oil. Compared with dry oil, thin oil has stronger fluidity and better lubrication effect on bearings. In addition, the flow of thin oil will also have a cooling effect.

[0006] However, the viscosity of thin oil is poor, so the vibration and impact generated during the operation of the equipment will produce additional pressure on the seals, which may cause damage or loosening of the seals, and thus it is easy to cause thin oil leakage. Utility Model Content

[0007] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a vacuum roller liner bearing thin oil lubrication sealing device to solve the technical problems mentioned in the above background technology.

[0008] The above technical objectives of the utility model are achieved through the following technical solutions:

[0009] A vacuum roller liner bearing thin oil lubrication sealing device comprises an outer shell, an end cover, a bearing and a shaft body, wherein two end covers are provided, and the two end covers are respectively fixedly mounted on two sides of the outer shell, and mounting holes are opened at the axis centers of the two end covers, and the hole walls of the mounting holes are provided with oil seals, the bearing is arranged inside the outer shell, and the shaft body is installed together in the mounting hole and the bearing, and spring boxes are installed on the outer surface of the shaft body and on both sides of the bearing, and a pressure spring is inserted in the spring box, and a sealing cover is provided at the end of the pressure spring away from the spring box.

[0010] Furthermore, the shell and the end cover are fixedly connected by a plurality of bolts.

[0011] Furthermore, the sealing cover is annular, and a plurality of positioning holes arranged in an annular array are provided inside the sealing cover.

[0012] Furthermore, a limiting rod is provided at a position of the inner wall of the end cover corresponding to the positioning hole.

[0013] Furthermore, a rotating ring is provided at the connection between the pressure spring and the sealing cover.

[0014] Furthermore, one end of the sealing cover facing the bearing, the interior of the housing, and the position of the end cover corresponding to the inner cavity of the housing together form an oil storage cavity.

[0015] In summary, the present invention includes at least one of the following beneficial technical effects:

[0016] 1. A vacuum roller liner bearing thin oil lubrication sealing device, wherein a spring box, a pressure spring and a sealing cover are sequentially sleeved on the outer surface of a shaft body, and the spring box contacts the side wall of the bearing, and then two end covers are respectively sleeved on the two ends of the shaft body, and then the two end covers are respectively fixed on the two ends of the shell, and sealing gaskets are arranged at the contact positions of the end covers and the shell, and under the action of the pressure spring, the sealing cover is pushed so that the sealing cover is always in contact with the side wall of the end cover, so that the oil injected into the shell can never contact the oil seal, and the thin oil can be effectively prevented from flowing out through the gap between the oil seal and the shaft body;

[0017] 2. This kind of vacuum roller inner liner bearing thin oil lubrication sealing device, when the rotating ring is set, the contact position of the pressure spring and the sealing cover is rotationally connected, and then when the spring box is affected by the rotation of the shaft body and rotates, the pressure spring rotates with the spring box, so that the pressure spring supports the sealing cover more evenly, and the pressure of each position of the sealing cover in contact with the end cover is more even, so as to achieve the purpose of improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 The utility model is a structural schematic diagram of a vacuum roller liner bearing thin oil lubrication sealing device.

[0020] Figure 2The utility model is a schematic diagram of the internal structure of the outer shell of a vacuum roller liner bearing thin oil lubrication sealing device.

[0021] Figure 3 The utility model is a schematic diagram of the connection structure of a sealing cover and a shaft body of a vacuum roller liner bearing thin oil lubrication sealing device.

[0022] Figure 4 The utility model is a schematic diagram of the connection structure of the bearing and the shaft body of the vacuum roller liner bearing thin oil lubrication sealing device.

[0023] Figure 5 The utility model is a planar cross-sectional view of the internal structure of a vacuum roller liner bearing thin oil lubrication sealing device.

[0024] In the figure, 1. outer shell; 2. end cover; 3. bearing; 4. shaft; 5. mounting hole; 6. oil seal; 7. spring box; 8. pressure spring; 9. sealing cover; 10. bolt; 11. positioning hole; 12. limit rod; 13. rotating ring; 14. oil storage chamber. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] Example:

[0027] Reference Figure 1-Figure 5 The utility model discloses a vacuum roller liner bearing 3 thin oil lubrication sealing device, comprising a shell 1, an end cover 2, a bearing 3 and a shaft body 4, wherein two end covers 2 are provided, and the two end covers 2 are respectively fixedly mounted on both sides of the shell, and mounting holes 5 are opened at the axis centers of the two end covers 2, and oil seals 6 are arranged on the hole walls of the mounting holes 5, the bearing 3 is arranged inside the shell 1, and the shaft body 4 is installed together in the mounting hole 5 and the bearing 3, and spring boxes 7 are installed on the outer surface of the shaft body 4 and on both sides of the bearing 3, and a pressure spring 8 is inserted in the spring box 7, and a sealing cover 9 is arranged at the end of the pressure spring 8 away from the spring box 7.

[0028] In this embodiment, during installation, the bearing 3 is first installed into the inner wall of the housing 1, and the outer wall of the bearing 3 is clamped into the housing 1, and the shaft body 4 is inserted into the interior of the bearing 3, so that the shaft body 4 is rotatably connected to the housing 1 through the bearing 3, and the spring box 7, the pressure spring 8 and the sealing cover 9 are sequentially sleeved on the outer surface of the shaft body 4, and the spring box 7 is in contact with the side wall of the bearing 3, and then the two end covers 2 are respectively sleeved on the two ends of the shaft body 4, and then the two end covers 2 are respectively fixed on the two ends of the housing 1, and the contact positions of the end covers 2 and the housing 1 are provided with sealing gaskets, under the action of the pressure spring 8, the sealing cover 9 is pushed so that the sealing cover 9 is always in contact with the side wall of the end cover 2, so that the oil injected into the housing 1 can never contact with the oil seal 6, which can effectively prevent the thin oil from flowing out through the gap between the oil seal 6 and the shaft body 4.

[0029] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the housing 1 and the end cover 2 are fixedly connected by a plurality of bolts 10 .

[0030] In this embodiment, the outer box and the two end covers 2 are fixedly connected by bolts 10, and static sealing rings are added at the connection to prevent the oil from flowing out through the gap between the outer shell 1 and the end covers 2.

[0031] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the sealing cover 9 is annular, and a plurality of positioning holes 11 arranged in an annular array are provided inside the sealing cover 9 .

[0032] In this embodiment, the sealing cover 9 arranged in an annular shape can effectively shield the connection between the end cover 2 and the oil seal 6 to prevent the oil from contacting the oil seal 6 .

[0033] In a further preferred embodiment of the present invention, Figure 1-5 As shown, a limiting rod 12 is provided at a position on the inner wall of the end cover 2 corresponding to the positioning hole 11 .

[0034] In this embodiment, the sealing cover 9 is fixedly connected to the end cover 2 by setting the limit rod 12 in conjunction with the positioning hole 11 to prevent the sealing cover 9 from rotating due to the rotation of the shaft body 4, thereby preventing the sealing cover 9 from rubbing against the oil seal 6 and causing rapid wear between the oil seal 6 and the sealing cover 9.

[0035] In a further preferred embodiment of the present invention, Figure 1-5 As shown, a rotating ring 13 is provided at the connection between the pressure spring 8 and the sealing cover 9 .

[0036] In this embodiment, the contact position between the pressure spring 8 and the sealing cover 9 is rotationally connected by the setting of the rotating ring 13. When the spring box 7 is affected by the rotation of the shaft body 4 and rotates, the pressure spring 8 rotates with the spring box 7, so that the pressure spring 8 supports the sealing cover 9 more evenly, and the pressure at each position of the sealing cover 9 in contact with the end cover 2 is more even, thereby achieving the purpose of improving the sealing effect.

[0037] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the end of the sealing cover 9 facing the bearing 3 , the interior of the housing 1 , and the position of the end cover 2 corresponding to the inner cavity of the housing 1 together form an oil storage chamber 14 .

[0038] In this embodiment, the oil storage chamber 14 formed by the sealing cover 9 facing one end of the bearing 3, the interior of the housing 1, and the corresponding positions of the end cover 2 and the inner cavity of the housing 1 is used to store thin oil. During the rotation of the shaft 4 and the bearing 3, the thin oil is lifted up and fills the interior of the housing 1 to achieve the purpose of cooling.

[0039] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A vacuum roller liner bearing thin oil lubrication sealing device, characterized in that: The invention comprises a housing (1), an end cover (2), a bearing (3) and a shaft body (4), wherein two end covers (2) are provided, and the two end covers (2) are respectively fixedly mounted on two sides of the housing, and a mounting hole (5) is provided at the axis center of the two end covers (2), and an oil seal (6) is provided on the hole wall of the mounting hole (5), and the bearing (3) is provided inside the housing (1), and the shaft body (4) is installed in the mounting hole (5) and inside the bearing (3), and a spring box (7) is installed on the outer surface of the shaft body (4) and on both sides of the bearing (3), and a pressure spring (8) is inserted into the inside of the spring box (7), and a sealing cover (9) is provided at one end of the pressure spring (8) away from the spring box (7).

2. The vacuum roller liner bearing thin oil lubrication sealing device according to claim 1, characterized in that: The housing (1) and the end cover (2) are fixedly connected by a plurality of bolts (10).

3. The vacuum roller liner bearing thin oil lubrication sealing device according to claim 2, characterized in that: The sealing cover (9) is annular in shape, and a plurality of positioning holes (11) arranged in an annular array are provided inside the sealing cover (9).

4. The vacuum roller liner bearing thin oil lubrication sealing device according to claim 3, characterized in that: A limiting rod (12) is provided at a position on the inner wall of the end cover (2) corresponding to the positioning hole (11).

5. The vacuum roller liner bearing thin oil lubrication sealing device according to claim 4, characterized in that: A rotating ring (13) is provided at the connection between the pressure spring (8) and the sealing cover (9).

6. A vacuum roller liner bearing thin oil lubrication sealing device according to claim 5, characterized in that: An end of the sealing cover (9) facing the bearing (3), the interior of the housing (1), and a position of the end cover (2) corresponding to the inner cavity of the housing (1) together form an oil storage cavity (14).

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