一种托辊
By introducing a polyurea buffer layer and a waterproof labyrinth structure into the idler rollers, the problem of easy damage to the idler rollers in corrosive environments is solved, extending their service life and reducing the frequency of replacement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN DIZHUAN PRECISION TECH CO LTD
- Filing Date
- 2025-09-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing idler rollers are easily damaged in the ore processing industry due to corrosive water vapor environment and material impact, resulting in short service life and frequent replacement, which increases transportation costs.
The idler roller design includes a metal tube, a buffer layer, and a hard layer. The buffer layer is made of polyurea, which is elastic and corrosion-resistant. The hard layer can be made of rock or ceramic. An external waterproof labyrinth structure is set up to enhance protection.
The elastic cushioning and corrosion resistance of the buffer layer extend the service life of the idler rollers, reduce the replacement frequency, and decrease transportation costs.
Smart Images
Figure CN224512253U_ABST
Abstract
Claims
1. An idler characterized by: The device includes a roller shaft and a flat roller. The flat roller includes a first metal tube, a first buffer layer, and a first rigid layer. The first metal tube is rotatably mounted on the roller shaft via a bearing, so that the flat roller and the roller shaft can rotate relative to each other. The first buffer layer is bonded between the first metal tube and the first rigid layer, so that the first rigid layer covers and fixes the outside of the first metal tube. The first buffer layer is elastic, so that there is a buffer zone between the first metal tube and the first rigid layer.
2. A roller as claimed in claim 1, characterized in that: The first buffer layer includes a first polyurea layer.
3. The idler roller according to claim 1, characterized in that: The flat roller also includes a second buffer layer, which is covered and fixed to the outside of the first hard layer.
4. A roller as claimed in claim 3, characterised in that: The second buffer layer includes a second polyurea layer.
5. A roller as claimed in claim 1, wherein: The first hard layer includes a rock layer or a ceramic layer.
6. A roller according to any one of claims 1 to 5, characterised in that: The idler roller also includes a friction adjusting wheel. The flat roller and the friction adjusting wheel are coaxially arranged on the roller shaft, and the flat roller and the friction adjusting wheel can rotate relative to each other. The friction adjusting wheel includes a second metal tube, a third buffer layer, a second hard layer, and a fourth buffer layer. The second metal tube is rotatably sleeved on the roller shaft via a bearing, so that the friction adjusting wheel and the roller shaft can rotate relative to each other. The third buffer layer is bonded between the second metal tube and the second hard layer, so that the second hard layer covers and fixes the outside of the second metal tube, and the fourth buffer layer covers and fixes the outside of the second hard layer. The outer diameter of the second hard layer gradually decreases towards the flat roller.
7. An idler roller according to claim 6, characterised in that: The outer wall of the second hard layer is provided with at least one annular protrusion at intervals along the axial direction.
8. An idler according to claim 6, characterized in that: The flat roller includes a first end and a second end, the second end being provided with an annular boss, and the friction adjusting wheel includes a third end and a fourth end, the third end being provided with an annular inner groove for fitting the annular boss, so that the annular boss and the annular inner groove form a waterproof labyrinth structure.
9. A roller according to claim 6, characterized in that: The first end of the flat roller is provided with a bearing, a skeleton oil seal, a sealing ring, and a dust cover in sequence from the inside to the outside along the axial direction; the second end of the flat roller is provided with a bearing and a skeleton oil seal in sequence from the inside to the outside along the axial direction; the third end of the friction adjusting wheel is provided with a bearing and a skeleton oil seal in sequence from the inside to the outside along the axial direction; a connecting bushing is provided at the connection between the second end of the flat roller and the third end of the friction adjusting wheel, the connecting bushing is sleeved on the roller shaft, the skeleton oil seals on the second end of the flat roller and the third end of the friction adjusting wheel are both sleeved on the connecting bushing, and the bearings on the second end of the flat roller and the third end of the friction adjusting wheel respectively abut against the two end faces of the connecting bushing, so that there is a gap between the end faces of the second end and the third end; the fourth end of the friction adjusting wheel is provided with a bearing, a skeleton oil seal, a sealing ring, and a dust cover in sequence from the inside to the outside along the axial direction.
10. An idler roller according to claim 1, characterized in that: The flat roller is symmetrically provided with sealing components at both ends. The sealing components include a skeleton oil seal, a sealing ring, and a dust cover. The inner wall of the first metal tube is provided with an installation groove, and the bearing, skeleton oil seal, sealing ring, and dust cover are arranged in the installation groove from the inside to the outside.