Waterproof and dustproof wedge-shaped sealing carrier roller

Abstract

The utility model relates to a waterproof and dustproof wedge-shaped sealing carrier roller which comprises a roller body, a roller shaft is coaxially arranged in the roller body, a bearing is installed on the roller shaft in a sleeved mode, a bearing outer sleeve is installed on the outer ring of the bearing, a first bearing seat is installed on the outer ring of the bearing outer sleeve, the first bearing seat is fixed to the inner side of the roller body, and a shaft sleeve is sleeved on the roller shaft. A shaft retainer ring is arranged between the shaft sleeve and a bearing inner ring, a bearing seat II is mounted at the end part of the roller body, an outer seal is mounted on an inner ring of the bearing seat II, a mounting groove I is formed in an outer sleeve inner ring of the shaft sleeve, a wedge-shaped sealing ring I is mounted in the mounting groove I and is in elastic contact with the roller shaft, and a mounting groove II is formed in an inner ring of the outer seal; and a wedge-shaped sealing ring II is mounted in the mounting groove II and is in elastic contact with the shaft sleeve. The first wedge-shaped sealing ring prevents foreign matter inside the roller body from entering the bearing, the second wedge-shaped sealing ring prevents foreign matter outside the roller body from entering the bearing, the first wedge-shaped sealing ring and the second wedge-shaped sealing ring are of wedge-shaped structures, contact friction resistance is reduced, and meanwhile good sealing performance is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of idler rollers, and in particular to a waterproof and dustproof wedge-shaped sealing idler roller. Background Technology

[0002] Idler rollers have a wide range of applications, such as in metallurgy, mining, chemical industry, grain, steel, food, and cement. They are suitable for open-air, dusty, and corrosive environments. They mainly serve as auxiliary support for different types of belt conveyors required by different production lines. Several idler rollers are installed on the belt conveyor channel, with the belt located above the idler rollers. During the material conveying process, the belt is supported by the idler rollers, thus smoothly conveying the material to the designated position.

[0003] However, due to the harsh and complex environment in which idlers are used, the bearings in the idlers are easily affected by dust and water, causing the bearings to rust and wear, reducing the service life of the idlers, and thus affecting normal production operations. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the present invention provides a waterproof and dustproof wedge-shaped sealing idler roller.

[0005] The waterproof and dustproof wedge-shaped sealing roller provided by this utility model adopts the following technical solution:

[0006] A waterproof and dustproof wedge-shaped sealed idler roller includes a roller body, a roller shaft coaxially disposed within the roller body, a bearing sleeved on the roller shaft, a bearing outer sleeve mounted on the outer ring of the bearing, a bearing housing one mounted on the outer ring of the bearing outer sleeve, the bearing housing one fixed to the inside of the roller body, a bushing sleeve mounted on the roller shaft, a bushing retainer ring disposed between the bushing sleeve and the inner ring of the bearing, a bearing housing two mounted at the end of the roller body, an outer seal mounted on the inner ring of the bearing housing two, an installation groove one opened on the inner ring of the bearing outer sleeve, a wedge-shaped sealing ring one installed in the installation groove one, the wedge-shaped sealing ring one elastically contacting the roller shaft, an installation groove two opened on the inner ring of the outer seal two, a wedge-shaped sealing ring two installed in the installation groove two, the wedge-shaped sealing ring two elastically contacting the bushing.

[0007] By adopting the above technical solution, during the operation of the idler roller, the shaft rotates around the roller shaft, the end of the roller shaft is fixed, wedge seal ring one is used to prevent foreign objects inside the roller body from entering the bearing, and wedge seal ring two is used to prevent foreign objects such as water and dust outside the shaft body from entering the bearing. The unique wedge structure of wedge seal ring one and wedge seal ring two reduces contact friction resistance while ensuring good sealing performance.

[0008] Optionally, an oil passage communicating with the bearing is provided on the outer seal, and an oil cup is installed at the inlet of the oil passage.

[0009] By adopting the above technical solution, it is convenient to add lubricating oil to the bearing in a timely manner through the oil cup.

[0010] Optionally, the roller includes a shaft tube and a shaft head, with the shaft head inserted into the end of the shaft tube and the two welded together.

[0011] By adopting the above technical solution, the overall weight of the roller shaft was reduced.

[0012] Optionally, a metal liner is installed inside the roller body, and the bearing housing is welded and fixed to the liner.

[0013] By adopting the above technical solution, the liner provides support for the roller body.

[0014] Optionally, several noise-reducing grooves are provided on the outer side of the roller along its length.

[0015] By adopting the above technical solution, the silent groove has achieved a good noise reduction effect during the operation of the idler roller.

[0016] Optionally, one tip of the wedge seal ring contacts the roller shaft and is inclined away from the bearing, while the other tip of the wedge seal ring contacts the bushing and is inclined away from the bearing.

[0017] Optionally, one wedge-shaped sealing ring is provided, and four wedge-shaped sealing rings are provided.

[0018] In summary, this utility model has at least one of the following beneficial technical effects:

[0019] 1. Wedge seal ring one is used to prevent foreign objects inside the roller body from entering the bearing, and wedge seal ring two is used to prevent foreign objects such as water and dust outside the shaft body from entering the bearing. The unique wedge structure of wedge seal ring one and wedge seal ring two reduces contact friction resistance while ensuring good sealing performance.

[0020] 2. The roller includes a shaft tube and a shaft head, which reduces the overall weight of the roller;

[0021] 3. The liner provides support for the roller body. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of a waterproof and dustproof wedge-shaped sealing roller according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of the roller shaft according to an embodiment of the present invention.

[0024] Figure 3 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0025] Explanation of reference numerals in the attached drawings: 1. Roller body; 101. Silent groove; 2. Liner tube; 3. Roller shaft; 301. Shaft tube; 302. Shaft head; 4. Bearing; 5. Bearing outer sleeve; 501. Mounting groove one; 6. Bearing housing one; 7. Shaft sleeve; 8. Shaft retaining ring; 9. Bearing housing two; 10. Retaining ring; 11. External seal; 111. Mounting groove two; 12. Oil cup; 13. Wedge seal ring one; 14. Wedge seal ring two. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 - Appendix Figure 3 The present invention will be described in further detail below.

[0027] This utility model discloses a waterproof and dustproof wedge-shaped sealing idler roller. (Refer to...) Figure 1 and Figure 2 The waterproof and dustproof wedge-shaped sealing roller includes a roller body 1, which is a polymer tube. Several silent grooves 101 are provided on the outer side of the roller body 1 along its length. A metal liner 2 is installed on the inner side of the roller body 1, which provides support for the roller body 1. A roller shaft 3 is coaxially arranged inside the liner 2. In this embodiment, the roller shaft 3 includes a shaft tube 301. Shaft heads 302 are inserted into both ends of the shaft tube 301, and the shaft heads 302 are welded and fixed to the shaft tube 301 at the connection.

[0028] Reference Figure 1 and Figure 3 A bearing 4 is fitted onto the shaft head 302, a bearing outer sleeve 5 is fitted onto the outer ring of the bearing 4, and a bearing housing 6 is fitted onto the outer side of the bearing outer sleeve 5. The bearing housing 6 is welded and fixed to the bushing 2. A bushing 7 is also fitted onto the shaft head 302, and a retaining ring 8 is provided between the bushing 7 and the inner ring of the bearing 4. The retaining ring 8 is fitted onto the shaft head 302. A bearing housing 9 is also installed at the end of the roller body 1. A retaining ring 10 is installed between the bearing housing 9 and the bearing housing 6. The retaining ring 10 is welded and fixed to the bearing housing 6.

[0029] Reference Figure 1 and Figure 3 The bearing housing 2 9 has an outer seal 11 installed on its inner ring. The outer seal 11 has an oil passage that communicates with the bearing 4. An oil cup 12 is installed at the inlet of the oil passage. The bearing outer sleeve 5 has an installation groove 501 on its inner ring. The installation groove 501 is an annular groove. A wedge-shaped sealing ring 13 is installed in the installation groove 501. The wedge-shaped sealing ring 13 is made of oil-resistant and wear-resistant rubber. The tip of the wedge-shaped sealing ring 13 is inclined away from the bearing 4 and makes elastic contact with the shaft head 302.

[0030] Reference Figure 1 and Figure 3The inner ring of the outer seal 11 has an installation groove 111. The installation groove 111 is an annular groove. Four wedge-shaped sealing rings 14 are installed side by side in the installation groove 111. The number of wedge-shaped sealing rings 14 is determined based on the sealing performance and rotational resistance. The wedge-shaped sealing rings 14 are made of oil-resistant and wear-resistant rubber. The tips of the wedge-shaped sealing rings 14 are inclined away from the bearing 4 and make elastic contact with the bushing 7.

[0031] The implementation principle of the waterproof and dustproof wedge-shaped sealing idler roller of this utility model embodiment is as follows: During the operation of the idler roller, the roller body 1 rotates around the roller shaft 3, the end of the roller shaft 3 is fixed, the wedge-shaped sealing ring 13 is used to prevent foreign objects inside the roller body 1 from entering the bearing 4, and the wedge-shaped sealing ring 14 is used to prevent water and dust and other foreign objects outside the roller body 1 from entering the bearing 4. The unique wedge-shaped structure of the wedge-shaped sealing ring 13 and the wedge-shaped sealing ring 14 reduces the contact friction resistance and ensures good sealing performance. The roller shaft 3 is composed of a shaft tube 301 and a shaft head 302, which can reduce the overall weight of the roller shaft 3. The outer side of the roller body 1 is provided with a silent groove 101, which plays a good noise reduction role during the operation of the idler roller.

[0032] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A waterproof and dustproof wedge-shaped sealing idler roller, characterized in that: The roller body (1) includes a roller shaft (3) coaxially arranged inside the roller body (1), a bearing (4) is sleeved on the roller shaft (3), a bearing outer sleeve (5) is installed on the outer ring of the bearing (4), a bearing seat (6) is installed on the outer ring of the bearing outer sleeve (5), the bearing seat (6) is fixed to the inner side of the roller body (1), a bushing (7) is sleeved on the roller shaft (3), a retaining ring (8) is provided between the bushing (7) and the inner ring of the bearing (4), and a bearing seat (9) is installed at the end of the roller body (1). The bearing housing (9) has an outer seal (11) installed on its inner ring. The bearing outer sleeve (5) has an installation groove (501) on its inner ring. A wedge seal (13) is installed in the installation groove (501). The wedge seal (13) is in elastic contact with the roller shaft (3). The outer seal (11) has an installation groove (111) on its inner ring. A wedge seal (14) is installed in the installation groove (111). The wedge seal (14) is in elastic contact with the bushing (7).

2. The waterproof and dustproof wedge-shaped sealing roller according to claim 1, characterized in that: An oil passage communicating with the bearing (4) is provided on the outer seal (11), and an oil cup (12) is installed at the inlet of the oil passage.

3. The waterproof and dustproof wedge-shaped sealing roller according to claim 1, characterized in that: The roller (3) includes a shaft tube (301) and a shaft head (302), the shaft head (302) being inserted into the end of the shaft tube (301) and the two being welded together.

4. The waterproof and dustproof wedge-shaped sealing roller according to claim 1, characterized in that: A metal liner (2) is installed inside the roller body (1), and the bearing seat (6) is welded and fixed to the liner (2).

5. The waterproof and dustproof wedge-shaped sealing roller according to claim 1, characterized in that: Several silent grooves (101) are provided on the outer side of the roller body (1) along the length direction.

6. The waterproof and dustproof wedge-shaped sealing roller according to claim 1, characterized in that: The tip of wedge seal ring one (13) contacts the roller shaft (3) and is inclined away from the bearing (4), and the tip of wedge seal ring two (14) contacts the bushing (7) and is inclined away from the bearing (4).

7. The waterproof and dustproof wedge-shaped sealing roller according to claim 1 or 6, characterized in that: One wedge-shaped sealing ring (13) is provided, and four wedge-shaped sealing rings (14) are provided.

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