Mine ultra-high molecular weight carrier roller with multi-stage seal

Abstract

This utility model relates to the field of conveying equipment technology, specifically to a mining ultra-high molecular weight polymer idler roller with multi-stage sealing. It includes a support frame, an idler roller body mounted on the support frame, bearing seats at both ends of the idler roller body, bearings housed within the bearing seats, a first sealing body and a second sealing body on the outer side of the bearings, a sealing disc between the first and second sealing bodies, and a third sealing body on the inner side of the bearings. The first sealing body, sealing disc, and second sealing body provide a three-stage seal on the outer side of the bearings. This design is primarily used to prevent the entry of external dust and moisture when the equipment operates in high-humidity, high-dust environments. Compared to conventional idler rollers using only labyrinth seals, this design further improves the sealing effect, reduces lubricant contamination, thereby extending the equipment's service life and reducing production costs.

Description

Technical Field

[0001] This utility model relates to the field of conveying equipment technology, specifically to a mining ultra-high molecular weight idler roller with multi-stage sealing. Background Technology

[0002] In mining, coal transportation and other fields, belt conveyors are key material conveying equipment, and idlers, as the core component of belt conveyors, play an important role in supporting the conveyor belt and reducing running resistance. Their operational stability directly affects the overall operating efficiency and maintenance cost of the conveyor.

[0003] Currently, most mining idlers are made of ultra-high molecular weight polymer (UHMWPE) materials to take advantage of their wear resistance and lightweight properties. However, the sealing structure design at the ends of the idlers still has significant shortcomings. Mining environments are generally characterized by high humidity and high dust levels. Fine dust particles easily penetrate the interior of the idlers with airflow, and the humid environment easily leads to corrosion of transmission components such as bearings. Existing idlers typically use single-stage seals (such as lip seals and labyrinth seals), which have a limited sealing layer and limited contact area, making it difficult to effectively prevent the intrusion of dust and moisture. On the one hand, dust intrusion exacerbates the wear of bearings and bushings, leading to increased rotational resistance and frequent abnormal noises. On the other hand, moisture intrusion accelerates bearing corrosion, shortens bearing life, and ultimately causes the entire idler to fail, requiring frequent shutdowns for replacement. This not only increases equipment maintenance costs but also seriously affects the continuity of mine production. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides a mining ultra-high molecular weight polymer idler roller with multi-stage sealing. By using multi-stage sealing, the sealing performance at the roller ends is enhanced, improving the roller's sealing performance in high-humidity and high-dust operating environments, thereby extending the service life of the equipment.

[0005] To achieve the above objectives, this utility model embodiment adopts the following technical solution: a mining ultra-high molecular weight idler roller with multi-stage sealing, comprising a support frame, an idler roller body disposed on the support frame, a connecting shaft disposed within the idler roller body, a support body disposed between the connecting shaft and the idler roller body, bearing seats disposed at both ends of the idler roller body, bearings disposed within the bearing seats, a first sealing body and a second sealing body disposed on the outer side of the bearings, a sealing disc disposed between the first sealing body and the second sealing body, and a third sealing body disposed on the inner side of the bearings.

[0006] As a further improvement to the above technical solution:

[0007] The first sealing body includes an inner sealing ring and an outer sealing ring, and the inner sealing ring and the outer sealing ring have staggered sealing ridges on their opposite sidewalls.

[0008] The outer end face of the inner sealing ring is connected to the bearing seat, the outer sealing ring is sleeved on the connecting shaft, an extension body is provided on the outer side wall of the inner sealing ring, an insertion gap is reserved between the extension body and the bearing seat, and a clearance groove corresponding to the position of the extension body is provided on the inner side wall of the sealing disc.

[0009] The second sealing body includes an inner retaining ring and an outer retaining ring. The upper end of the inner retaining ring extends into the insertion gap, and the lower end fits against the inner side of the outer retaining ring.

[0010] The outer retaining ring is C-shaped and its lower end fits against the outer side wall of the connecting shaft. A tightening plate is provided on the outer side of the outer retaining ring.

[0011] The support body includes a support rod, one end of which is connected to a connecting shaft, and the other end is provided with a support plate. A buffer pad is provided between the support plate and the roller body.

[0012] The support plate is arc-shaped, and the upper part of the support plate is provided with a storage groove for placing the cushioning pad. A cushioning spring is provided between the bottom of the storage groove and the cushioning pad.

[0013] The beneficial effects of this utility model embodiment are as follows: The mining ultra-high molecular weight idler roller with multi-stage sealing includes a bracket, an idler roller body is mounted on the bracket, bearing seats are mounted at both ends of the idler roller body, a bearing is mounted inside the bearing seat, a first sealing body and a second sealing body are mounted on the outer side of the bearing, a sealing disc is mounted between the first sealing body and the second sealing body, and a third sealing body is mounted on the inner side of the bearing. The first sealing body, the sealing disc, and the second sealing body are located on the outer side of the bearing to provide a three-stage seal, which is mainly used to prevent the entry of external dust and moisture when the equipment is operating in a high-humidity, high-dust environment. Compared with conventional idler rollers that use labyrinth seals alone, it can further improve the sealing effect, reduce the contamination of lubricating oil, thereby increasing the service life of the equipment and reducing the input of production costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the idler roller body in this utility model;

[0016] Figure 3 This is a cross-sectional view of the idler roller body in this utility model;

[0017] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;

[0018] Figure 5 This utility model Figure 3 Enlarged structural diagram at point B;

[0019] Figure 6 This is a side view of the support body in this utility model.

[0020] In the diagram: 1. Bracket; 2. Idler roller body; 3. Connecting shaft; 4. Support body; 5. Bearing seat; 6. Bearing; 7. First sealing body; 8. Second sealing body; 9. Sealing disc; 10. Third sealing body; 11. Inner sealing ring; 12. Outer sealing ring; 13. Sealing ridge; 14. Extension body; 15. Insertion gap; 16. Alternating groove; 17. Inner retaining ring; 18. Outer retaining ring; 19. Top clamping plate; 20. Support rod; 21. Support plate; 22. Buffer pad; 23. Storage groove; 24. Buffer spring. Detailed Implementation

[0021] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0022] like Figure 1-3 As shown, the multi-stage sealed ultra-high molecular weight polymer idler roller for mining in this embodiment includes a bracket 1, on which an idler roller body 2 is mounted. A connecting shaft 3 connected to the bracket 1 is located inside the idler roller body 2. A support body 4 is provided between the middle of the connecting shaft 3 and the idler roller body 2. The idler roller body 2 is made of high molecular weight polymer material, which has the advantages of being lightweight and having low rotational resistance. Simultaneously, its flexible surface allows it to alleviate roller vibration through a certain amount of deformation when impacted by materials, thereby reducing wear and extending service life. Bearing seats 5 are provided at both ends of the idler roller body 2, and bearings 6 are installed inside the bearing seats 5. A first sealing body 7 and a second sealing body are provided on the outer side of the bearings 6. A sealing disc 9 is provided between the first sealing body 7 and the second sealing body 8. A third sealing body 10 is provided on the inner side of the bearing 6. The third sealing body 10 and the first sealing body 7 are located on both sides of the bearing 6, which not only seal the bearing but also limit its movement. The first sealing body 7, the sealing disc 9, and the second sealing body 8 are located on the outer side of the bearing 6 to provide a three-stage seal. This is mainly used to prevent external dust and moisture from entering when the equipment is operating in a high-humidity and high-dust environment. Compared with conventional idler rollers that use labyrinth seals alone, this method can further improve the sealing effect, reduce the contamination of lubricating oil, thereby extending the service life of the equipment and reducing production costs.

[0023] like Figure 5 As shown, the first sealing body 7 includes an inner sealing ring 11 and an outer sealing ring 12. The inner sealing ring 11 and the outer sealing ring 12 have staggered sealing ridges 13 on their opposite sidewalls. A gap is reserved between two adjacent sealing ridges 13 to reduce friction while sealing.

[0024] The outer end face of the inner sealing ring 11 is connected to the bearing housing 5, and the outer sealing ring 12 is sleeved on the connecting shaft 3. An extension body 14 is provided on the outer side wall of the inner sealing ring 11. An insertion gap 15 is reserved between the extension body 14 and the bearing housing 5. An avoidance groove 16 corresponding to the position of the extension body 14 is provided on the inner side wall of the sealing disc 9. The outer end of the extension body 14 extends to the outer side of the outer sealing ring 12. The upper end of the sealing disc 9 is higher than the lower end face of the extension body 14. A gap is reserved between the inner side of the sealing disc 9 and the outer end face of the extension body 14 to reduce rotational friction and thus reduce wear on the seal. The inner edge of the inner retaining ring 17 extends to the middle of the extension body 14. It seals the reserved gap between the inner side and the outer end face of the extension body 14 from above without contacting it. The extension body 14, the sealing disc 9, and the inner retaining ring 17 form a sealing chamber, which improves the sealing performance without increasing rotational friction.

[0025] The second sealing body 8 includes an inner retaining ring 17 and an outer retaining ring 18. The upper end of the inner retaining ring 17 extends into the insertion gap 15, and the lower end is in contact with the inner side of the outer retaining ring 18.

[0026] The outer retaining ring 18 is C-shaped and its lower end fits against the outer side wall of the connecting shaft 3. A top clamping plate 19 is provided on the outer side of the outer retaining ring 18. The top clamping plate 19 is used to limit the outer retaining ring 18, so that the inner side of the outer retaining ring 18 fits against the lower end of the inner retaining ring, so that a sealed space is formed between the inner retaining ring and the sealing disc 18 to prevent impurities from entering.

[0027] like Figure 4 , 6 As shown, the support body 4 includes a support rod 20. One end of the support rod 20 is connected to the connecting shaft 3, and the other end is provided with a support plate 21. A buffer pad 22 is provided between the support plate 21 and the idler body 2. The idler body 2 is made of polymer material and has a certain deformation capacity. When the material is impacted, it can use deformation to absorb energy and buffer. The buffer pad 22 supports the inner side of the idler body 2 to prevent the idler body 2 from collapsing due to excessive deformation and causing excessive wear on the conveyor belt.

[0028] The support plate 21 is arc-shaped and has the same inner arc as the roller body 2. The upper part of the support plate 21 is provided with a storage groove 23 for placing the buffer pad 22. A buffer spring 24 is provided between the bottom of the storage groove 23 and the buffer pad 22. There are multiple support bodies 21 and they are evenly distributed along the length direction of the connecting shaft 3.

[0029] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0032] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A mining ultra-high molecular weight polymer idler roller with multi-stage sealing, comprising a support (1), wherein an idler roller body (2) is disposed on the support (1), characterized in that: A connecting shaft (3) is provided inside the roller body (2), and a support body (4) is provided between the connecting shaft (3) and the roller body (2). Bearing seats (5) are provided at both ends of the roller body (2), and bearings (6) are provided inside the bearing seats (5). A first sealing body (7) and a second sealing body (8) are provided on the outside of the bearings (6). A sealing disc (9) is provided between the first sealing body (7) and the second sealing body (8). A third sealing body (10) is provided on the inside of the bearings (6).

2. The mining ultra-high molecular weight idler roller with multi-stage sealing according to claim 1, characterized in that: The first sealing body (7) includes an inner sealing ring (11) and an outer sealing ring (12), and the inner sealing ring (11) and the outer sealing ring (12) are provided with staggered sealing protrusions (13) on their opposite sidewalls.

3. The mining ultra-high molecular weight idler roller with multi-stage sealing according to claim 2, characterized in that: The outer end face of the inner sealing ring (11) is connected to the bearing seat (5), the outer sealing ring (12) is sleeved on the connecting shaft (3), an extension body (14) is provided on the outer side wall of the inner sealing ring (11), an insertion gap (15) is reserved between the extension body (14) and the bearing seat (5), and a clearance groove (16) corresponding to the position of the extension body (14) is provided on the inner side wall of the sealing disc (9).

4. The mining ultra-high molecular weight idler roller with multi-stage sealing according to claim 3, characterized in that: The second sealing body (8) includes an inner retaining ring (17) and an outer retaining ring (18). The upper end of the inner retaining ring (17) extends into the insertion gap (15), and the lower end is in contact with the inner side of the outer retaining ring (18).

5. The mining ultra-high molecular weight idler roller with multi-stage sealing according to claim 4, characterized in that: The outer retaining ring (18) is C-shaped and its lower end is in contact with the outer side wall of the connecting shaft (3). A top clamping plate (19) is provided on the outer side of the outer retaining ring (18).

6. The mining ultra-high molecular weight idler roller with multi-stage sealing according to claim 1, characterized in that: The support body (4) includes a support rod (20), one end of which is connected to the connecting shaft (3), and the other end is provided with a support plate (21). A buffer pad (22) is provided between the support plate (21) and the roller body (2).

7. The mining ultra-high molecular weight idler roller with multi-stage sealing according to claim 6, characterized in that: The support plate (21) is arc-shaped, and the upper part of the support plate (21) is provided with a storage groove (23) for placing the buffer pad (22), and a buffer spring (24) is provided between the bottom of the storage groove (23) and the buffer pad (22).

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