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由西北橡胶工业制品研究所与上海煤矿机械研究所共同研制试验了一种新型组合式“Y”形密封圈。该密封圈安装在釆煤机内喷雾结构中的进水端作旋转封水密封使用。密封圈的结构是在“Y”形,(φ52×φ35×11)中嵌入一个“O”形圈(φ38.8×4。5)共同组合而成,其结构见附图。对这种密封圈以不偏心和偏心两种形式共进行了2800多小时的试验室试验。试验内容包括耐磨、抗撕、耐压(恒压、变压和冲击压力)以及寿命等有关
By the Northwest Rubber Industrial Products Institute and Shanghai Coal Mine Machinery Research Institute jointly developed a new type of combined “Y” ring. The sealing ring is installed in the water inlet end of the atomizing structure in the coal washing machine for use as a rotary sealing water seal. The structure of the sealing ring is a combination of “O” ring (φ38.8 × 4.5) embedded in “Y” shape, (φ52 × φ35 × 11), the structure of which is shown in the attached drawings. More than 2800 hours of laboratory tests were conducted on this type of seal with both eccentricity and eccentricity. Tests include wear, tear, pressure (constant pressure, pressure and impact pressure), and life expectancy, etc.