Sliding component

A technology for sliding parts and sliding surfaces, applied to engine components, engine seals, mechanical equipment, etc., to achieve the effects of preventing accumulation, improving lubrication performance, and improving sealing performance

Active Publication Date: 2015-04-15
EAGLE INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

), however, the present situation is that there is no proposed structure that seeks the following measures not only to reduce leakage and wear but also to prevent deposits on the sliding surface

Method used

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Experimental program
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Embodiment 1

[0060] Reference Figure 1 to Figure 3 , The sliding member of the first embodiment of the present invention will be described.

[0061] In addition, in the following embodiments, a mechanical seal as an example of a sliding member will be described as an example. In addition, the outer peripheral side of the sliding member constituting the mechanical seal is referred to as the high-pressure fluid side (sealed fluid side), and the inner peripheral side is referred to as the low-pressure fluid side (atmosphere side). However, the present invention is not limited to this. It can also be applied when the high-pressure fluid side is opposite to the low-pressure fluid side.

[0062] figure 1 It is a longitudinal cross-sectional view showing an example of a mechanical seal, and is a built-in mechanical seal that seals the sealed fluid on the high-pressure fluid side that is about to leak from the outer periphery of the sliding surface toward the inner periphery, and is provided as An a...

Embodiment 2

[0085] Reference Figure 4 with Figure 5 , The sliding member according to the second embodiment of the present invention will be described. The sliding part involved in the second embodiment is different from the sliding part of the first embodiment in the following respects: a spiral groove 12 for discharging the fluid to the high-pressure fluid side is additionally provided on the sliding surface, and the other basic structure is the same as that of the first embodiment. The components are marked with the same reference numerals, and repeated descriptions are omitted.

[0086] Figure 4 (a) The fixed ring 5 shown in figure 2 (a) The fixed ring 5 is additionally provided with a spiral groove 12 on the sliding surface of the fixed ring 5, on the sliding surface of the fixed ring 5 outside the part surrounded by the fluid circulation groove 10 and the high-pressure fluid side, that is, adjacent fluid Between the circulation grooves 10 and 10, there is provided a spiral groove 1...

Embodiment 3

[0095] Reference Image 6 with Figure 7 , The sliding member according to the third embodiment of the present invention will be described.

[0096] The sliding member according to the third embodiment is compatible with that in that the spiral groove 13 that discharges the fluid to the high-pressure fluid side is provided to communicate with the low-pressure fluid side. Figure 4 with Figure 5 The embodiment is different, the other basic structure is the same as Figure 4 with Figure 5 The same as in the second embodiment, the same components are marked with the same reference numerals, and repeated descriptions are omitted.

[0097] Image 6 (a) The fixed ring 5 shown is equipped with Figure 4 (a) In the same fluid circulation groove 10 and the Rayleigh step mechanism 11, the spiral groove 13 provided on the outside of the portion surrounded by the fluid circulation groove 10 and the high-pressure fluid side also communicates with the low-pressure fluid side.

[0098] In addition...

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PUM

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Abstract

Provided is a sliding component that, while achieving both the opposing conditions of sealing and lubricating, by means of actively taking in, discharging, and recycling a fluid at the sliding surface, prevents the occurrence of deposits at the sliding surface and is able to maintain the sealing functionality of the sliding surface over the long term. The present invention is characterized in that a fluid recycling groove (10) that is configured from an entrance section (10a), which enters from a high-pressure-fluid side, an exit section (10b), which leads to the high-pressure-fluid side, and an interconnection section (10c), that interconnects the entrance section and exit section, is provided to one of the sliding surfaces at which a pair of sliding components slide relative to each other, the fluid recycling groove (10) is isolated from a low-pressure-fluid side by a land section, a positive pressure generation mechanism (11) is provided to a section encircled by the fluid recycling groove (10) and the high-pressure-fluid side, the positive pressure generation mechanism (11) interconnects with the entrance section (10a), and the exit section and high-pressure-fluid side are isolated by a land section (R).

Description

Technical field [0001] The present invention relates to sliding parts suitable for, for example, mechanical seals, bearings, and other sliding parts. In particular, it relates to sliding parts such as seal rings or bearings that require fluid to intervene in the sliding surface to reduce friction and prevent leakage of fluid from the sliding surface. Background technique [0002] In a mechanical seal as an example of a sliding part, its performance is evaluated by leakage, wear, and torque. In the prior art, by optimizing the sliding material or the roughness of the sliding surface of the mechanical seal, performance is improved, and low leakage, long life, and low torque are realized. However, in view of the increasing awareness of environmental issues in recent years, it is required to further improve the performance of mechanical seals, and technological development beyond the limitations of the existing technology is required. [0003] Among them, for example, in the mechanic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/34
CPCF16J15/3412F16J15/3424F16J15/162F16J15/342
Inventor 板谷壮敏
Owner EAGLE INDS
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