A sealing structure for a carrier roller

Abstract

The utility model discloses a kind of sealing structure for carrier roller, including seal cover and end cap, seal cover and end cap are all set as circular disc body structure, and the outer diameter of end cap is greater than the outer diameter of seal cover, axial through hole one is equipped in the center of seal cover, and axial through hole two is equipped in the center of end cap, seal cover rear end surface is equipped with boss surface one, and first sealing portion is equipped in boss surface one;While end cap front end surface is equipped with boss surface two, and second sealing portion is equipped in boss surface two, seal cover and end cap are mutually inserted and buckled between first sealing portion and second sealing portion, form intercalation labyrinth type sealing connection structure.Using the sealing structure in the utility model, through the cooperation of seal cover, end cap and dust cover, the assembly process is simplified, effectively solve carrier roller end portion water seepage and dust problem, improve the service life of carrier roller, to meet the conveying requirement of belt conveyor, its overall structure is simple, reasonable in design, suitable for popularization and application.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for belt conveyors, specifically a sealing structure for idlers. Background Technology

[0002] Idler rollers are crucial components of belt conveyors, supporting the belt, reducing resistance during operation, and ensuring the belt's perpendicularity remains within certain limits to guarantee smooth operation. Therefore, the quality, waterproofing, and dustproofing performance of idler rollers are paramount. Currently, the main materials used for idler rollers in belt conveyors are steel, plastic, and ceramic. Steel idler rollers are characterized by high mechanical strength but are heavy, susceptible to corrosion, produce significant noise during operation, and are prone to damaging the belt. Plastic idler rollers are lightweight and easy to replace, but they are prone to aging and wear, resulting in a shorter service life and requiring frequent replacement, which is both inconvenient and detrimental to work efficiency. Ceramic idler rollers offer wear resistance but are heavy, easily breakable, and have high operating and maintenance costs.

[0003] Existing idler roller sealing structures primarily employ contact-type seals. During roller rotation, friction between the sealing ring and the dust cover surface creates resistance, easily leading to seal damage and high operating resistance. Therefore, to simplify the sealing structure, reduce friction, and lower operating resistance, improvements to existing sealing components are necessary to enhance sealing performance and extend idler roller lifespan. Providing a suitable sealing structure for idler rollers is therefore essential. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the problems existing in the background art, thereby providing a sealing structure component with a simple structure and convenient assembly. Using this sealing structure component, the problems of water seepage and dust prevention at the end of the idler roller can be effectively solved, so as to improve the service life of the idler roller and meet the conveying requirements of the belt conveyor. Specifically, it is a sealing structure component for idler rollers.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a sealing structure for idler rollers, the sealing structure comprising a sealing cover and an end cover, both the sealing cover and the end cover being configured as a circular disc structure, and the outer diameter of the end cover being larger than the outer diameter of the sealing cover. An axial through hole one is provided at the center of the sealing cover, and an axial through hole two is provided at the center of the end cover. A boss surface one is provided on the rear end face of the sealing cover, and a first sealing part is provided in the boss surface one; while a boss surface two is provided on the front end face of the end cover, and a second sealing part is provided in the boss surface two. The sealing cover and the end cover are interlocked and fastened together by the first sealing part and the second sealing part, forming an interlocking labyrinth-type sealing connection structure.

[0006] Furthermore, in the sealing structure for idler rollers described in this utility model, the outer diameter of the first boss surface in the sealing cover is smaller than the outer diameter of the second boss surface in the end cover, and the outer diameter of the second boss surface is the same as the outer diameter of the sealing cover; the diameter of the second axial through hole in the end cover is larger than the diameter of the first axial through hole in the sealing cover; the first sealing part is composed of a plurality of annular grooves 1 disposed in the first boss surface, and the second sealing part is composed of a plurality of annular grooves 2 disposed in the second boss surface; the sealing cover and the end cover are interlocked and fastened by the annular grooves 1 and 2 to form an interlocking labyrinth-type sealing connection structure.

[0007] Furthermore, in the sealing structure for idler rollers described in this utility model, there are two annular grooves and three annular grooves, and the annular grooves are arranged in a staggered manner to form a limiting sealing structure that can be interlocked and fastened together.

[0008] Furthermore, the sealing structure for idler rollers described in this utility model further includes a dust cover. The dust cover is cylindrical, and its outer diameter is smaller than that of the sealing cover. An axial through hole three is provided at the center of the dust cover. A first annular groove that is recessed inward and a second annular groove that is coaxially arranged with the second axial through hole and recessed inward are also provided on the rear end face of the end cover. An annular protrusion is formed between the first annular groove and the second annular groove. An annular sealing groove corresponding to the annular protrusion is provided on the front end face of the dust cover. The end cover and the dust cover are interlocked and fastened by the annular protrusion and the annular sealing groove to form an interlocking labyrinth-type sealing connection structure.

[0009] Furthermore, in the sealing structure for idler rollers described in this utility model, an inclined limiting contact surface is provided on the outer end face of the end cover facing the sealing cover.

[0010] Furthermore, in the sealing structure for idler rollers described in this utility model, the sealing cover, end cover, and dust cover are all made of high-strength wear-resistant engineering plastics.

[0011] The sealing structure for idler rollers described in this utility model consists of a sealing cap, an end cap, and a dust cover, which are interlocked to form an interlocking labyrinth-type sealing connection structure. This structure is mounted on the idler roller shaft and forms a sealing structure with the roller body. This not only simplifies the assembly process but also effectively solves the problems of water leakage and dust prevention at the idler roller ends. Furthermore, since the sealing cap, end cap, and dust cover are all made of high-strength, wear-resistant engineering plastics, these materials possess excellent wear resistance and compressive strength, enabling them to adapt to complex and harsh working environments. They are also lightweight, wear-resistant, and corrosion-resistant.

[0012] Therefore, the sealing structure described in this utility model, through the cooperation of the sealing cover, end cover and dust cover, not only simplifies the assembly process, but also effectively solves the problems of water seepage and dust prevention at the ends of the idler rollers, and improves the service life of the idler rollers, thereby meeting the conveying requirements of belt conveyors. Its overall structure is simple and reasonably designed, and therefore has strong practicality and broad application prospects, making it suitable for widespread application. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure during assembly of this utility model; Figure 3 This is a schematic diagram of the structure of the sealing cap described in this utility model; Figure 4 This is a schematic diagram of the structure of the end cap described in this utility model. Figure 1 ; Figure 5 This is a schematic diagram of the structure of the end cap described in this utility model. Figure 2 ; Figure 6 This is a schematic diagram of the structure of the dust cover described in this utility model.

[0015] As shown in the figure: 1-Sealing cap, 11-Axial through hole one, 12-Boss one, 13-Annular groove one, 2-End cap, 21-Axial through hole two, 22-Boss two, 23-Annular groove two, 24-First annular groove, 25-Second annular groove, 26-Annular protrusion, 27-Limiting contact surface, 3-Dust cover, 31-Axial through hole three, 32-Annular sealing groove. Detailed Implementation

[0016] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0017] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," and "right" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "provided with" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] It should be noted that the term "comprising" or any other variation is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Example 1

[0020] like Figures 1 to 6 As shown, this embodiment provides a sealing structure for idler rollers. The sealing structure includes a sealing cover 1 and an end cover 2. Both the sealing cover 1 and the end cover 2 are configured as circular disc structures, and the outer diameter of the end cover 2 is larger than the outer diameter of the sealing cover 1. An axial through hole 11 is provided at the center of the sealing cover 1, and an axial through hole 21 is provided at the center of the end cover 2. A boss surface 12 is provided on the rear end face of the sealing cover 1, and a first sealing part is provided in the boss surface 12. A boss surface 22 is provided on the front end face of the end cover 2, and a second sealing part is provided in the boss surface 22. The sealing cover 1 and the end cover 2 are interlocked and fastened together by the first sealing part and the second sealing part to form an interlocking labyrinth-type sealing connection structure.

[0021] Furthermore, in the sealing structure for idler rollers provided in this embodiment, the outer diameter of the boss surface 12 in the sealing cover 1 is smaller than the outer diameter of the boss surface 22 in the end cover 1, and the outer diameter of the boss surface 22 is the same as the outer diameter of the sealing cover 1; the diameter of the axial through hole 21 in the end cover 2 is larger than the diameter of the axial through hole 11 in the sealing cover 1; the first sealing part is composed of a plurality of annular grooves 13 disposed in the boss surface 12, and the second sealing part is composed of a plurality of annular grooves 23 disposed in the boss surface 22. The sealing cover 1 and the end cover 2 are interlocked and fastened by the annular grooves 13 and 23 to form an interlocking labyrinth-type sealing connection structure. In the specific manufacturing process, there are two annular grooves 13 and three annular grooves 23, and the annular grooves 13 and 23 are arranged in a staggered state to form a limiting sealing structure that can be interlocked and fastened.

[0022] Furthermore, the sealing structure for idler rollers provided in this embodiment includes a dust cover 3, which is a cylindrical structure. The outer diameter of the dust cover 3 is smaller than that of the sealing cover 1. An axial through hole 31 is provided at the center of the dust cover 3. A first annular groove 24 that is recessed inward and a second annular groove 25 that is coaxially arranged with the second axial through hole 21 and recessed inward are also provided on the rear end face of the end cover 2. An annular protrusion 26 is formed between the first annular groove 24 and the second annular groove 25. An annular sealing groove 32 corresponding to the annular protrusion 26 is provided on the front end face of the dust cover 3. The end cover 2 and the dust cover 3 are interlocked and fastened by the annular protrusion 26 and the annular sealing groove 32 to form an interlocking labyrinth-type sealing connection structure.

[0023] In the actual manufacturing process, the sealing cap 1, end cap 2, and dust cover 3 are all made of high-strength wear-resistant engineering plastics. These high-strength wear-resistant engineering plastics can be made of materials such as polycarbonate, polyamide, polyacetal, modified polyphenylene ether, polyester, polyphenylene sulfide, and polyaryl ester. They have excellent comprehensive properties, high rigidity, low creep, high mechanical strength, good heat resistance, and good electrical insulation. They can be used for a long time in harsh chemical and physical environments and can replace metals as engineering structural materials. At the same time, these materials have excellent wear resistance and compressive strength, can adapt to complex and harsh working environments, and are also lightweight, wear-resistant, and corrosion-resistant. Example 2

[0024] This embodiment is based on Embodiment 1. To create a sealing structure between the end cap 2 and the existing inner wall of the cylinder, thus avoiding gaps between the end cap 2 and the cylinder, and solving the problems of water seepage and dust prevention at the end of the idler roller, the sealing structure provided in this embodiment includes an inclined limiting contact surface 27 on the outer end face of the end cap 2 facing the sealing cover 1. The limiting contact surface 27 contacts and seals against the existing inner wall of the cylinder, thereby preventing gaps between the end cap 2 and the cylinder and solving the problems of water seepage and dust prevention at the end of the idler roller.

[0025] The sealing structure for idler rollers described in this utility model consists of a sealing cover 1, an end cover 2, and a dust cover 3, which are interlocked to form an interlocking labyrinth-type sealing connection structure. This structure is mounted on the idler roller shaft and forms a sealing structure with the cylinder. During installation, the sealing cover 1 and dust cover 3 are respectively installed on both sides of the end cover 2, and the end cover 2 is sealed against the existing inner wall of the cylinder, thus forming a sealing structure. This not only simplifies the assembly process but also effectively solves the problems of water leakage and dust prevention at the idler roller ends. Furthermore, because the sealing cover... 1. Both end caps 2 and dust caps 3 are made of high-strength wear-resistant engineering plastics (such as polycarbonate, polyamide, polyacetal, modified polyphenylene ether, polyester, polyphenylene sulfide, polyaryl ester, etc.). Engineering plastics have excellent comprehensive properties, high rigidity, low creep, high mechanical strength, good heat resistance, and good electrical insulation. They can be used for a long time in harsh chemical and physical environments and can replace metals as engineering structural materials. At the same time, these materials have excellent wear resistance and compressive strength, can adapt to complex and harsh working environments, and are also lightweight, wear-resistant, and corrosion-resistant.

[0026] In summary, the sealing structure described in this utility model, through the cooperation of the sealing cover 1, end cover 2 and dust cover 3, not only simplifies the assembly process, but also effectively solves the problems of water seepage and dust prevention at the ends of the idler rollers, and improves the service life of the idler rollers, thereby meeting the conveying requirements of belt conveyors. Its overall structure is simple and reasonably designed, thus it has strong practicality and broad application prospects, and is suitable for widespread application.

[0027] Other aspects of this utility model that are not detailed herein are all conventional techniques known to those skilled in the art.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Various modifications and variations can be made by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made using the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sealing structure for idler rollers, characterized in that: The sealing structure includes a sealing cap (1) and an end cap (2). Both the sealing cap (1) and the end cap (2) are configured as circular disc structures, and the outer diameter of the end cap (2) is larger than the outer diameter of the sealing cap (1). An axial through hole (11) is provided in the center of the sealing cap (1), and an axial through hole (21) is provided in the center of the end cap (2). A boss surface (12) is provided on the rear end face of the sealing cap (1), and a first sealing part is provided in the boss surface (12). A boss surface (22) is provided on the front end face of the end cap (2), and a second sealing part is provided in the boss surface (22). The sealing cap (1) and the end cap (2) are interlocked and fastened together by the first sealing part and the second sealing part to form an interlocking labyrinth-type sealing connection structure.

2. A sealing structure for a roller according to claim 1, characterized in that: The outer diameter of the first boss surface (12) in the sealing cap (1) is smaller than the outer diameter of the second boss surface (22) in the end cap (2), and the outer diameter of the second boss surface (22) is the same as the outer diameter of the sealing cap (1); the diameter of the second axial through hole (21) in the end cap (2) is larger than the diameter of the first axial through hole (11) in the sealing cap (1); the first sealing part is composed of a plurality of annular grooves (13) provided in the first boss surface (12), and the second sealing part is composed of a plurality of annular grooves (23) provided in the second boss surface (22). The sealing cap (1) and the end cap (2) are interlocked and fastened by the annular grooves (13) and the annular grooves (23) to form an interlocking labyrinth-type sealing connection structure.

3. A sealing structure for a roller according to claim 2, characterized in that: There are two annular grooves (13) and three annular grooves (23). The annular grooves (13) and (23) are arranged in a staggered manner to form a limiting and sealing structure that can be plugged into each other.

4. A sealing structure for a roller according to claim 1, characterized in that: The sealing structure also includes a dust cover (3), which is a cylindrical structure. The outer diameter of the dust cover (3) is smaller than that of the sealing cover (1). An axial through hole three (31) is provided in the center of the dust cover (3). A first annular groove (24) is recessed inward on the rear end face of the end cover (2), and a second annular groove (25) is arranged coaxially with the axial through hole two (21) and recessed inward. An annular protrusion (26) is formed between the first annular groove (24) and the second annular groove (25). An annular sealing groove (32) corresponding to the annular protrusion (26) is provided on the front end face of the dust cover (3). The end cover (2) and the dust cover (3) are interlocked and fastened by the annular protrusion (26) and the annular sealing groove (32) to form an interlocking labyrinth-type sealing connection structure.

5. A sealing structure for a roller according to claim 4, characterized in that: An inclined limiting contact surface (27) is provided on the outer end face of the end cap (2) facing the sealing cap (1).

6. A sealing structure for a roller according to claim 4, characterized in that: The sealing cap (1), end cap (2) and dust cover (3) are all made of high-strength wear-resistant engineering plastic.

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