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Sliding component

A technology for sliding parts and sliding surfaces, which is applied to engine components, pump components, parts of pumping devices for elastic fluids, etc., to achieve the effects of improving lubrication performance, preventing accumulation, and improving fluid circulation effects

Active Publication Date: 2016-06-15
EAGLE INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among conventional mechanical seals, there is known a mechanical seal in which a fluid introduction groove is formed on the sliding surface to form a fluid layer in order to prevent abrasion or burning of the sliding surface due to frictional heat generation (for example, refer to Patent Document 1, 2, 3), but the current situation is that there is no proposed structure that seeks 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

[0057] refer to Figure 1 to Figure 3 Next, the sliding member of Embodiment 1 of the present invention will be described.

[0058] In addition, in the following embodiments, a mechanical seal as an example of a sliding member will be described as an example. In addition, although the outer peripheral side of the sliding member constituting the mechanical seal is described as the high-pressure fluid side (sealed fluid side), and the inner peripheral side is described as the low-pressure fluid side (atmosphere side), the present invention is not limited thereto and may be applied to The opposite is true for the high-pressure fluid side and the low-pressure fluid side.

[0059] figure 1 It is a longitudinal sectional view showing an example of a mechanical seal, and is an inner-type 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, and is provided with: An annular ...

Embodiment 2

[0091] refer to Figure 4 A sliding member according to Example 2 of the present invention will be described.

[0092] In the sliding member of Example 2, fluid circulation grooves 10 are equally divided in four circumferential directions on the sliding surface, and spiral grooves 12 for discharging fluid to the high-pressure fluid side are additionally provided on the sliding surface. The sliding part is different from that of the first embodiment, but the other basic structures are the same as those of the first embodiment, and the same reference numerals are attached to the same parts, and repeated explanations are omitted.

[0093] exist Figure 4 Among them, on the outside of the part surrounded by the fluid circulation groove 10 and the high-pressure fluid side of the sliding surface of the stationary ring 5, that is, between the adjacent fluid circulation grooves 10 and 10, a spiral groove 12 is provided, and the spiral groove 12 passes through The relative sliding of...

Embodiment 3

[0096] refer to Figure 5 A sliding member according to Example 3 of the present invention will be described.

[0097] The sliding part of Embodiment 3 is similar to that of Embodiment 2 in that an inverted Rayleigh step mechanism 15 is provided instead of the spiral groove of Embodiment 2. Figure 4 The shown embodiment 2 is different, but the other basic structure is the same as Figure 4 In the same way, the same reference numerals are attached to the same components, and repeated descriptions are omitted.

[0098] exist Figure 5 In the sliding surface of the fixed ring 5, the fluid circulation groove 10 and the Rayleigh step mechanism 11 arranged equally in the circumferential direction 6 are provided, and, in the part surrounded by the fluid circulation groove 10 and the high-pressure fluid side An inverted Rayleigh step mechanism 15 is provided on the outside, that is, between adjacent fluid circulation grooves 10 and 10, and the inverted Rayleigh step mechanism 15 c...

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Abstract

Provided is a sliding component that achieves both of the conflicting conditions of sealing and lubrication, that prevents the concentration of a substance that causes sediment to occur on a sliding surface by actively taking a fluid into the sliding surface and discharging the fluid from the sliding surface, and that thereby prevents the occurrence of sediment and makes it possible to maintain the sealing function of the sliding surface over a long period of time. The sliding component is characterized in that: a fluid circulation groove (10) that is configured from an inlet section (10a) that leads in from a high-pressure fluid side, an outlet section (10b) that leads out to the high-pressure fluid side, and a connecting section (10c) that connects the inlet section and the outlet section is provided to the sliding surface of at least one of a pair of sliding components that slide relative to each other; the fluid circulation groove (10) is separated from a low-pressure fluid side by a land section (R); and a cross section of the bottom wall of the fluid circulation groove (10) is formed to have a round-bottomed shape.

Description

technical field [0001] The present invention relates to sliding components suitable for, for example, mechanical seals, bearings and other sliding parts. In particular, it relates to sliding parts such as seal rings and bearings that require fluid to be interposed between 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 the amount of leakage, the amount of wear, and the torque. In conventional technologies, the performance has been improved by optimizing the sliding material and the roughness of the sliding surface of the mechanical seal, and low leakage, long life, and low torque have been realized. However, due to the increasing awareness of environmental issues in recent years, further improvement in performance of mechanical seals is required, and technical development beyond the framework of conventional technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/34
CPCF16J15/3412F04D29/10F05D2240/55F16J15/342F16J15/3452
Inventor 板谷壮敏砂川和正德永雄一郎山川亮磨
Owner EAGLE INDS
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