Valve and a manufacturing method of a bearing surface for a valve
AssigneeNeles Finland Oy
InventorsJussi Hellman, Kari Vierimaa
Life of this patent
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Abstract
A valve and a bearing surface for a valve and a manufacturing method of the same including a valve body with a main channel extending between a fluid inlet and a fluid outlet, and a closing member provided in the main channel. The valve further includes a shaft connected to the closing member for moving the closing member between an open and a closed position. Moreover, the valve includes at least one bearing surface between the valve body and the closing member or the valve body and the shaft, the bearing surface further including a plurality of cavities filled with solid lubricant.
Claims13
A method of manufacturing a bearing surface for a valve, using additive manufacturing, comprising:
- providing a base,
- forming several layers on the base, the several layers comprising cavities, wherein a position of the cavities is changed between at least some of the several layers to form bearing surface cavities comprising counterdrafts and/or parameters of additive manufacturing are used that cause a rough or uneven surface to form the counterdrafts in the bearing surface cavities, and
- providing solid lubricant into the cavities.
A valve comprising:
- a valve body with a main channel extending between a fluid inlet and a fluid outlet, and
- a closing member in the main channel, and
- a shaft connected to the closing member for moving the closing member between an open and a closed position, and
- at least one bearing surface between the valve body and the closing member or the valve body and the shaft, the bearing surface further comprising several layers comprising cavities, wherein
- a position of the cavities is changed between at least some of the several layers to form bearing surface cavities comprising counterdrafts, and/or sidewalls of the bearing surface cavities comprise counterdrafts formed by parameters of additive manufacturing that result in a rough or uneven surface, and
- a plurality of the bearing surface cavities are filled with solid lubricant.
Dependencies are inferred from the claim text.