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L-shaped slip-ring sealed ring

A slip ring seal and slip ring technology, which is applied in the direction of engine seals, piston rings, mechanical equipment, etc., can solve the problems of poor performance of seal rings such as wear resistance, high temperature resistance and high pressure, and achieve superior aging resistance and possible The effect of reducing the resistance and reducing the friction force

Inactive Publication Date: 2009-01-07
GUANGZHOU MECHANICAL ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

German MERKEL company adopts the stepped ring for the shaft and the square ring for the shaft, which is composed of a low-friction filled polytetrafluoroethylene (PTFE) wear-resistant ring and an O-shaped rubber sealing ring; but these sealing rings are wear-resistant and high-temperature resistant and poorer performance at high pressure

Method used

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  • L-shaped slip-ring sealed ring
  • L-shaped slip-ring sealed ring
  • L-shaped slip-ring sealed ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] like figure 1 As shown, the L-shaped slip ring and the O-ring are in a natural state, and the contact section d of the L-shaped slip ring and the O-ring must match the cross-sectional diameter of the O-ring, where d must be greater than the cross-sectional diameter of the O-ring to avoid O-ring O-ring extrusion occurs at the top; the length c of the back pressure side of the L-shaped slip ring is close to the depth of the groove, which is also to avoid serious extrusion of the O-ring as much as possible.

[0026] like Figure 4 As shown, in the compression process, the L-shaped slip ring is slightly inclined inward, and the force and moment on the slip ring after oil pressure are not easy to twist and turn over. After the L-shaped slip ring is squeezed by the piston rod and the O-ring, the inclined surface is slightly deformed, but its wedge-shaped structure reduces the contact area, thus increasing the normal contact stress, and the contact stress value in the middle ...

Embodiment 2

[0032] The raw materials of the O-ring are calculated in parts by weight: 100 parts of hydrogenated nitrile rubber HNBR with 34% ACN content, 6.0 parts of zinc oxide, 1.5 parts of stearic acid, 1.5 parts of styrenated diphenylamine, methyl mercaptan benzimidazole 0.3 parts of zinc, 40 parts of fast extruded carbon black, 10 parts of high wear-resistant carbon black, 3 parts of N, N'-m-phenylbismaleimide, 2,5-dimethyl-2,5-bis 3.5 parts of (tert-butylperoxy)hexane.

[0033] The raw materials of the L-shaped slip ring are calculated in parts by weight: 65 parts of PTFE, and 35 parts of bronze powder.

[0034] Structural size parameters: the angle between the slope of the L-shaped slip ring and the shaft is 8°, a=9.1, b=13.5, c=10.9 d=10.4, the nominal size of the L-shaped slip ring (inner diameter*outer diameter*width) is 950 *990*19, the size specification of O-ring is 970*12.

[0035] The L-shaped slip ring sealing ring of this embodiment is suitable for hot rolling, cold rol...

Embodiment 3

[0037] The raw materials of the O-ring are calculated in parts by weight: 34% ACN content hydrogenated nitrile rubber HNBR 100 parts, zinc oxide 5.0 parts, stearic acid 1.0 parts, styrenated diphenylamine 1.1 parts, methyl mercaptan benzimidazole 0.4 parts of zinc, 35 parts of fast extruded carbon black, 15 parts of high wear-resistant carbon black, 2 parts of N, N'-m-phenylbismaleimide, 2,5-dimethyl-2,5-bis (tert-butylperoxy) hexane 4 parts.

[0038] The raw materials of the L-shaped slip ring are calculated in parts by weight: 60 parts of PTFE, 40 parts of bronze powder.

[0039] Structural dimension parameters: the angle between the slope of the L-shaped slip ring and the shaft is 7°, a=9.1, b=13.5, c=10.9 d=10.4, the nominal size of the L-shaped slip ring (inner diameter*outer diameter*width) is 900 *940*19, the size specification of O-ring is 920*12.

[0040] The L-shaped slip ring sealing ring in this embodiment is suitable for hot rolling and cold rolling, and the AGC...

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Abstract

The present invention discloses an L-shaped slip ring sealing ring, which is composed of an O-shaped ring and an L-shaped slip ring; wherein, the lip of the L-shaped slip ring, which is contacted with a main shaft, is composed of a straight section and an oblique section; the included angle between the oblique section and the axial line is between 6 degrees and 8 degrees. The L-shaped slip ring sealing ring, which is particularly applicable to the sealing of a large-diameter piston rod, has good abrasion-resisting, creep-resisting and high-pressure-resisting properties and has more persistent elastic property and prominent anti-aging property.

Description

technical field [0001] The invention relates to the field of seals, in particular to an L-shaped slip ring sealing ring used for hydraulic AGC oil cylinders of metallurgical equipment. Background technique [0002] The hydraulic AGC oil cylinder of metallurgical equipment is a key component of cold rolling, hot rolling and medium and heavy plate rolling mills. It transmits the rolling load of the rolling mill to the steel plate, adjusts the distance between the rolling mill rolls, and controls the thickness and shape of the steel plate. Among them, the seal is the key basic component of the hydraulic AGC cylinder, which ensures the normal operation of the AGC cylinder and the rolling mill, and ensures the performance and quality of steel products. German MERKEL company adopts the stepped ring for the shaft and the square ring for the shaft, which is composed of a low-friction filled polytetrafluoroethylene (PTFE) wear-resistant ring and an O-shaped rubber sealing ring; but t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/32F16J9/02F16J9/28C08L27/18C08L9/02C08K5/3445C08K3/08C08K3/04F16J15/3204F16J15/328F16J15/3284
Inventor 黄兴叶子波彭兵李正波王勇雷志云
Owner GUANGZHOU MECHANICAL ENG RES INST
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