A new sealing structure of low-resistance roller

Abstract

This application relates to the field of idler roller technology, and more particularly to a novel sealing structure for a low-resistance idler roller. To address the problem of increased resistance during idler roller rotation due to friction caused by the mutual friction within the labyrinth structure, the structure includes a primary sealing assembly. The primary sealing assembly has a primary labyrinth assembly on its exterior and a secondary labyrinth top assembly inside. This application utilizes the cooperation between the upper and lower labyrinth sections, filling the gap between them with lubricating grease to maintain a seal between the secondary labyrinth top and bottom assemblies. This reduces mutual friction between the secondary labyrinth top and bottom assemblies, thereby reducing resistance during idler roller rotation. The primary sealing assembly, in conjunction with the primary labyrinth assembly, encloses the secondary labyrinth top and bottom assemblies, blocking external dust and effectively reducing resistance caused by friction.

Description

Technical Field

[0001] This utility model relates to the field of idler roller technology, specifically to a novel sealing structure for a low-resistance idler roller. Background Technology

[0002] Idler rollers are an important component of belt conveyors, mainly used to support the conveyor belt and the weight of materials. Idler rollers are widely used in mines, power plants, steel plants, cement plants, docks and other places. Different types of idler rollers are suitable for different working conditions.

[0003] Currently, due to the complex working environment of idlers, sealing structures are used to prevent water and dust from entering the bearings. In the current idler sealing structure, the labyrinth structure rubs against each other during rotation, which increases the resistance of the idler during rotation due to friction.

[0004] Based on this, this utility model designs a novel sealing structure for low-resistance idlers to solve the problem. Utility Model Content

[0005] The purpose of this invention is to provide a novel sealing structure for a low-resistance idler roller, in order to solve the problem in the background art where the labyrinth structure rubs against each other, causing the idler roller to experience increased resistance during rotation due to friction.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel sealing structure for a low-resistance idler roller, comprising a primary sealing assembly, an external primary labyrinth assembly, an internal secondary labyrinth top assembly, an internal secondary labyrinth bottom assembly, the secondary labyrinth bottom assembly being engaged with the primary sealing assembly, and an internal protective cover for the primary sealing assembly.

[0007] Preferably, the primary sealing assembly includes a sealing shell, the top of which is provided with an insertion portion, and the bottom of which is provided with a slot.

[0008] Preferably, the secondary maze top assembly includes a sealing end cap disposed inside the sealing shell, the top of the sealing end cap having a stepped slot, the bottom surface of the sealing end cap having an upper maze portion, and the bottom of the sealing end cap having a connecting portion.

[0009] Preferably, the secondary maze bottom assembly includes a sealing bottom cover disposed inside the sealing shell, a lower maze portion above the sealing bottom cover, a snap-fit ​​portion on the outside of the sealing bottom cover, the snap-fit ​​portion engaging with a slot, the bottom end of the connecting portion extending into the interior of the sealing bottom cover, and the upper maze portion extending into the interior of the lower maze portion.

[0010] Preferably, the primary maze assembly includes a primary maze end cap disposed outside the insertion portion, and the upper part of the primary maze end cap is provided with a sleeve portion, which is sleeved outside the insertion portion.

[0011] Preferably, the cover includes a cover body, the bottom surface of which is provided with a snap-fit ​​protrusion, the bottom of which is provided with a limiting part, and the bottom end of the limiting part extends into the interior of the stepped slot.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: by cooperating with the upper and lower labyrinth parts, lubricating grease can be filled into the gap between the upper and lower labyrinth parts, so that the top and bottom components of the secondary labyrinth can remain sealed, and the mutual friction between the top and bottom components of the secondary labyrinth can be reduced, thereby reducing the resistance during the rotation of the idler roller. The primary sealing component, in conjunction with the primary labyrinth component, can cover the top and bottom components of the secondary labyrinth, blocking external dust, thereby effectively reducing the resistance caused by friction. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional structural schematic diagram of the orthographic section of this utility model; Figure 3 This is a schematic diagram of the disassembled structure of this utility model; Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0015] The attached diagram lists the components represented by each number as follows: 1. Primary sealing assembly; 101. Sealing shell; 102. Insertion part; 103. Slot; 2. Protective cover; 201. Cover body; 202. Snap-fit ​​protrusion; 203. Limiting part; 3. Secondary labyrinth bottom assembly; 301. Sealing bottom cover; 302. Lower labyrinth part; 303. Snap-fit ​​part; 4. Primary labyrinth assembly; 401. Primary labyrinth end cover; 402. Socket part; 5. Secondary labyrinth top assembly; 501. Sealing end cover; 502. Stepped slot; 503. Connecting part; 504. Upper labyrinth part. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1 to 4 This utility model provides a technical solution: a novel sealing structure for a low-resistance idler roller, including a primary sealing component 1, a primary labyrinth component 4 on the outside of the primary sealing component 1, a secondary labyrinth top component 5 inside the primary sealing component 1, a secondary labyrinth bottom component 3 inside the secondary labyrinth top component 5, the secondary labyrinth bottom component 3 being engaged with the primary sealing component 1, and a protective cover 2 inside the primary sealing component 1.

[0018] Please see Figure 4 The primary sealing component 1 includes a sealing shell 101. The top of the sealing shell 101 is provided with a plug-in part 102, and the bottom of the sealing shell 101 is provided with a slot 103. The primary sealing component 1 can cover the top component 5 and the bottom component 3 of the secondary maze and block external dust.

[0019] Please see Figure 4 The secondary maze top assembly 5 includes a sealing end cap 501 disposed inside the sealing shell 101. The top of the sealing end cap 501 is provided with a stepped slot 502, the bottom surface of the sealing end cap 501 is provided with an upper maze portion 504, and the bottom of the sealing end cap 501 is provided with a connecting portion 503. The connecting portion 503 can be conveniently and tightly fitted to the outside of the main shaft, and the small diameter part of the connecting portion 503 can be tightly fitted with the main shaft of the idler roller.

[0020] Please see Figure 4 The secondary labyrinth bottom component 3 includes a sealing bottom cover 301 disposed inside the sealing shell 101. A lower labyrinth portion 302 is provided above the sealing bottom cover 301. A snap-fit ​​portion 303 is provided on the outside of the sealing bottom cover 301. The snap-fit ​​portion 303 snaps into the slot 103. The bottom end of the connecting portion 503 extends into the interior of the sealing bottom cover 301. The upper labyrinth portion 504 extends into the interior of the lower labyrinth portion 302. Through the cooperation of the lower labyrinth portion 302 and the upper labyrinth portion 504, a labyrinth channel can be formed. By injecting lubricating oil, an oil film can be formed during rotation, thereby ensuring the sealing effect. Furthermore, the gap between the secondary labyrinth top component 5 and the secondary labyrinth bottom component 3 can be used to reduce friction during rotation.

[0021] Please see Figure 4The primary labyrinth assembly 4 includes a primary labyrinth end cap 401 disposed outside the insertion part 102. The upper part of the primary labyrinth end cap 401 is provided with a sleeve part 402, which is sleeved on the outside of the insertion part 102. By providing the sleeve part 402, it can be sleeved on the outside of the insertion part 102, and together with the primary sealing assembly 1, a labyrinth structure is formed to block external dust.

[0022] Please see Figure 4 The cover 2 includes a cover body 201. The bottom surface of the cover body 201 is provided with a snap-fit ​​protrusion 202. The bottom of the snap-fit ​​protrusion 202 is provided with a limiting part 203. The bottom end of the limiting part 203 extends into the interior of the stepped slot 502. The cover 2 can be inserted into the interior of the primary sealing component 1 to cover the primary labyrinth component 4 and ensure the sealing effect.

[0023] The implementation principle of the sealing structure of a novel low-resistance idler roller in this application embodiment is as follows: During use, the bottom component 3 of the secondary labyrinth is first installed inside the pressurized bearing housing and in contact with the bearing. The top component 5 of the secondary labyrinth is then tightly fitted to the outside of the idler roller main shaft through the small aperture of the connecting part 503, allowing the upper labyrinth part 504 and the lower labyrinth part 302 to engage. Subsequently, lubricating oil is filled into the gap between the upper labyrinth part 504 and the lower labyrinth part 302, allowing the lubricating oil to engage with the lower labyrinth part when the upper labyrinth part 504 rotates. Part 302 forms an oil film with lubricating oil to fill the gap and prevent the bottom assembly 3 and the top assembly 5 of the secondary labyrinth from rubbing against each other. Then, the primary sealing assembly 1 is fitted over the top assembly 5 of the secondary labyrinth and locked over the bottom assembly 3 of the secondary labyrinth, allowing the top assembly 5 of the secondary labyrinth to rotate. Then, the primary labyrinth assembly 4 is fitted over the primary sealing assembly 1. Then, the cover 2 is inserted into the insertion part 102, while the limiting part 203 is locked inside the stepped slot 502 to seal the spindle.

[0024] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0025] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A novel sealing structure for a low-resistance idler roller, comprising a primary sealing assembly (1), characterized in that: The primary sealing component (1) has a primary maze component (4) on its outside, a secondary maze top component (5) inside its interior, a secondary maze bottom component (3) inside its interior, the secondary maze bottom component (3) being engaged with the primary sealing component (1), and a protective cover (2) inside its interior.

2. The sealing structure of a novel low-resistance idler roller according to claim 1, characterized in that: The primary sealing assembly (1) includes a sealing shell (101), the top of which is provided with a plug-in portion (102), and the bottom of which is provided with a slot (103).

3. The sealing structure of a novel low-resistance idler roller according to claim 1, characterized in that: The secondary maze top assembly (5) includes a sealing end cap (501) disposed inside the sealing shell (101). The top of the sealing end cap (501) is provided with a stepped slot (502), the bottom surface of the sealing end cap (501) is provided with an upper maze part (504), and the bottom of the sealing end cap (501) is provided with a connecting part (503).

4. The sealing structure of a novel low-resistance idler roller according to claim 3, characterized in that: The secondary maze bottom assembly (3) includes a sealing bottom cover (301) disposed inside the sealing shell (101), a lower maze portion (302) is provided above the sealing bottom cover (301), a snap-fit ​​portion (303) is provided outside the sealing bottom cover (301), the snap-fit ​​portion (303) snaps into the slot (103), the bottom end of the connecting portion (503) extends into the interior of the sealing bottom cover (301), and the upper maze portion (504) extends into the interior of the lower maze portion (302).

5. The sealing structure of a novel low-resistance idler roller according to claim 1, characterized in that: The primary maze assembly (4) includes a primary maze end cap (401) disposed outside the plug-in portion (102). The upper part of the primary maze end cap (401) is provided with a sleeve portion (402), which is sleeved outside the plug-in portion (102).

6. The sealing structure of a novel low-resistance idler roller according to claim 1, characterized in that: The cover (2) includes a cover body (201), the bottom surface of the cover body (201) is provided with a snap-fit ​​protrusion (202), the bottom of the snap-fit ​​protrusion (202) is provided with a limiting part (203), and the bottom end of the limiting part (203) extends into the interior of the stepped slot (502).

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