PULVERIZING ROLLER, PULVERIZING TABLE, SOLID FUEL PULVERIZATION DEVICE, AND METHOD FOR MANUFACTURING PULVERIZING ROLLER

• Main Author: YAMAGUCHI SOTARO
• Format: Patent
• Language: English; Japanese
• Published: 17.05.2024
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; CRUSHING, PULVERISING, OR DISINTEGRATING; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; MILLING GRAIN; NATURAL GAS; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PREPARATORY TREATMENT OF GRAIN FOR MILLING; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TRANSPORTING

To improve a yield when a pulverizing roller and a pulverizing table are manufactured, and extend lives of the pulverizing roller and the pulverizing table.SOLUTION: A pulverizing roller 13 includes a journal housing 43 rotatably supported on a housing, and an annular roller part 49 which is fixed to the journal housing 43, and pulverizes a solid fuel between a pulverizing table and the roller part 49. The roller part 49 has a base part 51 fixed to the journal housing, and a ceramic part 52 which is provided on the outer peripheral part of the base part 51, has a coefficient of linear expansion different from that of the base part 51 and is more excellent in abrasion resistance than that of the base part 51. The ceramic part 52 has first ceramic particles 52c and second ceramic particles 52d having rigidity and toughness different from those of the first ceramic particles 52c, and a mixing ratio of the first ceramic particles 52c and the second ceramic particles 52d changes in a rotation center axis C2 direction.SELECTED DRAWING: Figure 3 【課題】粉砕ローラや粉砕テーブルを製造する際の歩留まりを向上させるとともに、粉砕ローラや粉砕テーブルの長寿命化を図ることを目的とする。【解決手段】粉砕ローラ１３は、ハウジングに対して回転可能に支持されるジャーナルハウジング４３と、ジャーナルハウジング４３に固定され、粉砕テーブルとの間で固体燃料を粉砕する円環状のローラ部４９と、を備えている。ローラ部４９は、ジャーナルハウジングに固定される基部５１と、基部５１の外周部に設けられ基部５１と線膨張係数が異なるとともに基部５１よりも耐摩耗性が優れているセラミック部５２と、を有している。セラミック部５２は、第１セラミックス粒子５２ｃと第１セラミックス粒子５２ｃとは剛性及び靭性が異なる第２セラミックス粒子５２ｄとを有し、回転中心軸線Ｃ２方向に沿って第１セラミックス粒子５２ｃと第２セラミックス粒子５２ｄとの混合割合が変化している。【選択図】図３