VALVE PLUG AND VALVE DEVICE

• Main Authors: KONDO RINA, KUWABARA TAKANORI
• Format: Patent
• Language: English; Japanese
• Published: 13.03.2024
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

To provide a valve plug having high abrasion resistance and impact resistance.SOLUTION: A valve plug 30 has: a base part 32 having an annular contact surface 32s, which comes in contact with a valve seat when the valve plug 30 is fully closed, at an end; an insertion part 33 having an outer peripheral surface 33s connected to the contact surface 32s; and a tip part 34 including an apical surface 34s, connected to the outer peripheral surface 33s, and having a circular truncated cone shape. The valve plug 30 is entirely molded by a ceramic. Since the entire valve plug 30 is molded by the ceramic, the valve plug achieves high abrasion resistance. Further, the tip part 32 has the circular truncated cone shape and does not have a sharp portion, and thus the valve plug achieves high impact resistance.SELECTED DRAWING: Figure 2 【課題】高い耐摩耗性および耐衝撃性を有するバルブプラグを提供する。【解決手段】バルブプラグ３０は、全閉時にバルブシートと接触する円環状の接触面３２ｓを端部に有する基部３２と、接触面３２ｓと接続した外周面３３ｓを有する挿入部３３と、外周面３３ｓと接続した先端面３４ｓを有する円錐台形の先端部３４とを有する。バルブプラグ３０は全体がセラミックスで成形されている。バルブプラグ３０は全体がセラミックスで成形されているため、耐摩耗性が高い。先端部３２が円錐台形であり尖った部分がないので、耐衝撃性が高い。【選択図】図２