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sliding parts

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: 2016-08-24
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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Embodiment 1

[0060] refer to Figure 1 to Figure 3 , the sliding member of Embodiment 1 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 will be described as the high-pressure fluid side (sealed fluid side), and the inner peripheral side will be described as the low-pressure fluid side (atmosphere side). However, the present invention is not limited thereto. It can also be applied to the case where the high-pressure fluid side and the low-pressure fluid side are reversed.

[0062] figure 1 It is a vertical 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 leaks from the outer periphery of the sliding surface toward the inner periphery. An annular rotating ...

Embodiment 2

[0085] refer to Figure 4 and Figure 5 , the sliding member according to Embodiment 2 of the present invention will be described. The sliding part involved in embodiment 2 is different from the sliding part in embodiment 1 in the following aspects: a spiral groove 12 for discharging fluid to the high-pressure fluid side is additionally provided on the sliding surface, and other basic structures are the same as in embodiment 1, and the same Components are marked with the same reference numerals, and repeated explanations are omitted.

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

Embodiment 3

[0095] refer to Figure 6 and Figure 7 , the sliding member according to Embodiment 3 of the present invention will be described.

[0096] The sliding member according to Embodiment 3 is the same as that in that the helical groove 13 that discharges the fluid to the high-pressure fluid side is provided to communicate with the low-pressure fluid side. Figure 4 and Figure 5 The embodiment differs from other basic structures with Figure 4 and Figure 5 Embodiment 2 is the same, and the same components are marked with the same reference numerals, and repeated descriptions are omitted.

[0097] Figure 6 The fixing ring 5 shown in (a) has the same Figure 4 (a) The same fluid circulation groove 10 and Rayleigh step mechanism 11, the spiral groove 13 provided outside the part surrounded by the fluid circulation groove 10 and the high pressure fluid side also communicates with the low pressure fluid side.

[0098] Additionally, for Figure 6 The fixed ring 5 shown in (b) ...

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Abstract

To provide a sliding member that can prevent accumulation of deposits on the sliding surface and maintain the sliding surface for a long period of time by taking into account the contradictory conditions of sealing and lubrication, and actively introducing and discharging the fluid on the sliding surface to circulate it. sealing function. It is characterized in that a fluid circulation groove (10) is provided on the sliding surface on the side of the pair of sliding members that slide relative to each other, and the fluid circulation groove (10) is provided with an inlet portion (10a) entering from the high-pressure fluid side, and a fluid circulation groove (10). An outlet portion (10b) from which the high-pressure fluid is discharged, and a communication portion (10c) that communicates the inlet portion and the outlet portion are constituted, and the fluid circulation groove (10) is separated from the low-pressure fluid side by a mesa portion, A positive pressure generating mechanism (11) is provided in the portion surrounded by the fluid circulation tank (10) and the high-pressure fluid side, and the positive pressure generating mechanism (11) communicates with the inlet portion (10a) and is supported by a table surface. Portion (R) is spaced from the outlet portion and the high pressure fluid side.

Description

technical field [0001] The present invention relates to sliding components suitable for eg mechanical seals, bearings and other sliding parts. In particular, it relates to sliding parts such as seal rings and bearings that require fluid to intervene in sliding surfaces to reduce friction and prevent fluid leakage from the sliding surfaces. Background technique [0002] In a mechanical seal as an example of a sliding member, its performance is evaluated by leakage amount, wear amount, and torque. Conventionally, by optimizing the sliding material or the roughness of the sliding surface of the mechanical seal, the performance has been improved, and low leakage, long life, and low torque have been realized. However, in view of the increasing awareness of environmental problems in recent years, further improvement in the performance of mechanical seals is required, and technical development beyond the limitations of conventional technologies is required. [0003] Among them, f...

Claims

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Application Information

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