A long-life high-performance roller

Abstract

The present invention discloses a long-life high-performance roller, comprising a shaft, a roller body, a sealing ring, a bearing, an inner sealing ring, an outer sealing ring, a rubber corrugated seal, an inner retaining ring, a retaining ring and a shaft retaining ring. A shaft is sleeved inside the roller body and the shaft passes through the bearing shell parts at both ends of the roller body. The bearing shell parts at both ends of the roller body are sequentially installed with the sealing ring, the bearing, the inner sealing ring, the outer sealing ring, the inner retaining ring, the rubber corrugated seal, the retaining ring and the shaft retaining ring from the inside to the outside; the sealing ring can prevent the lubricating oil contained in the bearing from flowing into the inside of the roller body; the inner sealing ring and the outer sealing ring form a labyrinth seal to prevent the lubricating oil contained in the bearing from leaking outward; the inner retaining ring and the rubber corrugated seal form an elastic contact seal to effectively prevent the infiltration of external dust and moisture.

Description

Technical Field

[0001] The invention relates to a belt transport device, in particular to a roller component of a belt conveyor. Background Art

[0002] Belt conveyors are widely used in chemical, coal mining, metallurgy, building materials, electric power and other sectors. They can transport bulk materials as well as items. Rollers are the main components of belt conveyors, and the performance of rollers has a great impact on the overall performance of belt conveyors. At present, labyrinth seals, that is, gap seals, are used at the bearings at both ends of the rollers. During use, dust and moisture inevitably enter the bearing parts through the gaps of the labyrinth seals, causing premature failure of grease, a significant increase in bearing rotation resistance, and premature end of roller life. This greatly increases the operating cost of belt conveyors. If rollers can use a seal that effectively isolates dust and moisture from bearings, the service life and performance of the rollers will be greatly improved. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a long-life high-performance roller, optimizes the traditional labyrinth seal structure, removes the parts with little gap sealing effect, and adds a thin-walled rubber seal with high elasticity on the outside of the labyrinth seal, thereby changing the single gap seal into a gap and contact composite seal. Since the lip of the thin-walled rubber seal with high elasticity is very thin, the pressure on the contacting parts is very small, thus forming a reliable contact sealing effect without increasing the rotation resistance.

[0004] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a long-life high-performance roller, including a shaft, a roller body, a sealing ring, a bearing, an inner sealing ring, an outer sealing ring, a rubber corrugated seal, an inner retaining ring, a retaining ring and a shaft retaining ring, a shaft is sleeved inside the roller body and the shaft passes through the bearing shell parts at both ends of the roller body, and the bearing shell parts at both ends of the roller body are sequentially installed with a sealing ring, a bearing, an inner sealing ring, an outer sealing ring, an inner retaining ring, a rubber corrugated seal, a retaining ring and a shaft retaining ring from the inside to the outside; the sealing ring can prevent the lubricating oil contained in the bearing from flowing into the inside of the roller body; the inner sealing ring and the outer sealing ring form a labyrinth seal to prevent the lubricating oil contained in the bearing from leaking outward; the inner retaining ring and the rubber corrugated seal form an elastic contact seal to effectively prevent the infiltration of external dust and moisture.

[0005] Furthermore, the rubber bellows seal is made of wear-resistant rubber material, and is arranged from outside to inside in sequence as a large-diameter trumpet-shaped lip, a middle bellows and a small-diameter cylindrical hole. The edge of the large-diameter trumpet-shaped lip is a knife-like structure with a thickness of less than . mm, and the wall thickness of the remaining part is at least . mm; the middle bellows is composed of several corrugations, and its function is to tighten the spring of the lip. The inner diameter of the small-diameter cylindrical hole and the outer end of the outer sealing ring adopt an interference fit to prevent the entry of moisture and dust.

[0006] Furthermore, both ends of the shaft are flat and fixed to the roller bracket, or holes are drilled at both ends of the shaft to fix the roller bracket through hinged installation.

[0007] In summary, the present invention provides a long-life high-performance roller, which can optimize the traditional labyrinth seal structure, remove the parts with little gap sealing effect, add a thin-walled rubber seal with high elasticity on the outside of the labyrinth seal, and change the single gap seal into a gap and contact composite seal. Since the lip of the thin-walled rubber seal with high elasticity is very thin, the pressure on the contacting parts is very small, so that a reliable contact sealing effect is formed without increasing the rotation resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the present invention;

[0009] Figure 2 It is a schematic diagram of the structure of the rubber bellows seal of the present invention;

[0010] In the figure: shaft 1, roller body 2, sealing ring 3, bearing 4, inner sealing ring 5, outer sealing ring 6, rubber bellows seal 7, inner retaining ring 8, retaining ring 9, shaft retaining ring 10, trumpet-shaped lip 11, middle bellows 12, cylindrical hole 13. DETAILED DESCRIPTION

[0011] The present invention will be further described below in conjunction with the accompanying drawings.

[0012] like Figure 1As shown, the present invention is a long-life high-performance roller, comprising a shaft 1, a roller body 2, a sealing ring 3, a bearing 4, an inner sealing ring 5, an outer sealing ring 6, a rubber corrugated seal 7, an inner retaining ring 8, a retaining ring 9 and a shaft retaining ring 10. The shaft 1 is sleeved inside the roller body 2 and the shaft 1 passes through the bearing shell parts at both ends of the roller body 2. The bearing shell parts at both ends of the roller body 2 are sequentially installed with the sealing ring 3, the bearing 4, the inner sealing ring 5, the outer sealing ring 6, the inner retaining ring 8, the rubber corrugated seal 7, the retaining ring 9 and the shaft retaining ring 10 from the inside to the outside; the sealing ring 3 can prevent the lubricating oil contained in the bearing 4 from flowing into the inside of the roller body 2; the inner sealing ring 5 and the outer sealing ring 6 form a labyrinth seal to prevent the lubricating oil contained in the bearing 4 from leaking outward; the inner retaining ring 8 and the rubber corrugated seal 7 form an elastic contact seal to effectively prevent the infiltration of external dust and moisture.

[0013] like Figure 2 As shown, the rubber bellows seal 7 is made of wear-resistant rubber material, and the rubber bellows seal 7 is arranged from the outside to the inside in sequence as a large-diameter trumpet-shaped lip 11, a middle bellows 12 and a small-diameter cylindrical hole 13. The edge of the large-diameter trumpet-shaped lip 11 is a blade-like structure with a thickness of less than 1.5 mm, and the wall thickness of the remaining part is at least 1.5 mm; the middle bellows 12 is composed of several corrugations, and its function is to tighten the spring of the lip. The inner diameter of the small-diameter cylindrical hole 13 adopts an interference fit with the outer end of the outer sealing ring 6 to prevent the entry of moisture and dust.

[0014] Furthermore, both ends of the shaft 1 are flat and fixed to the roller brackets, or holes are drilled at both ends of the shaft 1 to fix the roller brackets through hinged installation.

[0015] In summary, the present invention provides a long-life high-performance roller, which can optimize the traditional labyrinth seal structure, remove the parts with little gap sealing effect, add a thin-walled rubber seal with high elasticity on the outside of the labyrinth seal, and change the single gap seal into a gap and contact composite seal. Since the lip of the thin-walled rubber seal with high elasticity is very thin, the pressure on the contacting parts is very small, that is, a reliable contact sealing effect is formed without increasing the rotation resistance.

Claims

1. A long-life high-performance roller, comprising a shaft (1), a roller body (2), a sealing ring (3), a bearing (4), an inner sealing ring (5), an outer sealing ring (6), a rubber bellows seal (7), an inner retaining ring (8), a retaining ring (9) and a shaft retaining ring (10), wherein the shaft (1) is sleeved inside the roller body (2) and the shaft (1) passes through the bearing shells at both ends of the roller body (2), and is characterized in that: The bearing shells at both ends of the roller body (2) are provided with sealing rings (3), bearings (4), inner sealing rings (5), outer sealing rings (6), inner retaining rings (8), rubber bellows seals (7), retaining rings (9) and shaft retaining rings (10) in order from the inside to the outside; the sealing rings (3) can prevent the lubricating oil contained in the bearings (4) from flowing into the interior of the roller body (2); the inner sealing rings (5) and the outer sealing rings (6) form a labyrinth seal to prevent the lubricating oil contained in the bearings (4) from leaking out; the inner retaining rings (8) and the rubber bellows seals (7) form an elastic contact seal to effectively prevent the infiltration of external dust and moisture; the rubber bellows seals (7) are made of wear-resistant rubber material. The rubber bellows seal (7) is arranged from outside to inside in sequence as a large-diameter trumpet-shaped lip (11), a middle bellows (12) and a small-diameter cylindrical hole (13); the edge of the large-diameter trumpet-shaped lip (11) is a knife-shaped structure with a thickness of less than 1.5 mm, and the wall thickness of the remaining part is at least 1.5 mm; the middle bellows (12) is composed of a plurality of corrugations, and its function is to play a role in pressing the spring of the lip; the inner diameter of the small-diameter cylindrical hole (13) and the outer end of the outer sealing ring (6) are interference-fitted to prevent the entry of moisture and dust; the two ends of the shaft (1) are flat and fixed to the roller bracket or the roller bracket is fixed by drilling holes at the two ends of the shaft (1) and installing through hinges.

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