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File: D:\database\translate.php
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Function: _error_handler
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Function: lang
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Function: require_once
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Function: _error_handler
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File: D:\database\translate.php
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Function: _error_handler
File: D:\wwwroot\blfsy.com\application\controllers\news.php
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Function: lang
File: D:\wwwroot\blfsy.com\index.php
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Function: require_once
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Filename: database/translate.php
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File: D:\database\translate.php
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Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
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Function: lang
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File: D:\database\translate.php
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Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
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Function: lang
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Function: require_once
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Backtrace:
File: D:\database\translate.php
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Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
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Function: lang
File: D:\wwwroot\blfsy.com\application\controllers\news.php
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2024-04-07
Severity: Notice
Message: Use of undefined constant APP_ID - assumed 'APP_ID'
Filename: database/translate.php
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Backtrace:
File: D:\database\translate.php
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Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
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Function: lang
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Message: Use of undefined constant APP_ID - assumed 'APP_ID'
Filename: database/translate.php
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Backtrace:
File: D:\database\translate.php
Line: 69
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
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Function: lang
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Function: require_once
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Message: Use of undefined constant SEC_KEY - assumed 'SEC_KEY'
Filename: database/translate.php
Line Number: 69
Backtrace:
File: D:\database\translate.php
Line: 69
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
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Function: lang
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夏细送 贺志勇 闵翔
（武钢矿业有限责任公司程潮铁矿）
摘 要∶通过2YA2160圆振动筛主轴承座油封的改进,介绍了磁力机械油封的结构、安装、密封效果及应用前景。
1、引言
程潮铁矿选厂于1969-11月投产,原设计年处理矿石150万t,矿石经PYB 2100圆锥破碎机破碎后,进行筛分。筛分设备为2YA2160圆振动筛,一用一备。2002-03月,对该选厂进行了大规模的改造,专门引进了美卓矿机生产的HP500高性能圆锥破碎机3台,形成了年处理原矿石280万t,生产铁精矿120万t的生产规模。目前生产规模几乎是投产设计时的2倍,但筛分设备仍然是2YA2160圆振动筛。1994年前,圆振动筛的台时量为320t,1994— 2002年,其台时量为410t,目前其台时量达到了650～ 800t,生产时通常是两台圆振动筛长期连续超负荷同时运行。恶劣的工况和长期运转造成圆振动筛主轴承座骨架油封迅速磨损,密封装置很快失效,导致主轴承润滑油泄漏,轴承润滑效果差,常引起轴承散架和“抱轴”等故障,严重影响生产。主轴承座的密封形式见图1。
2、改进方案
为了解决这一问题,采取过多种方法,如将主轴承稀油站润滑改干油润滑,虽然轴承座没有漏油现象的发生,但受主轴传动部分结构的影响,主轴高速旋转时,轴承腔内的干油在离心力的作用下从轴承上“逃逸” ,汇集到主轴的圆筒中央,轴承处于“亚健康”润滑状态,效果不太理想。采用磁力机械油封取代主轴承座的骨架油封,取得了很好的效果。
2.1 磁力机械油封简介
磁力机械油封设计新颖、结构简单,由三部分组成:第一部分为静密封面,环嵌在一个磁性的不锈钢合金接合盖里,表面光滑、热稳定性好;第二部分为支密封面,主要材料为耐磨、润滑性良好的碳和石墨,环嵌在具有磁性元件的合金里,动密封面采用浮动式设计,可长期在磁力的作用下与静环保持紧密贴合而不必人工调整;第三部分为“ O”型圈,其作用是对轴与动环的接合表面进行密封,材质为经过特殊工艺处理过的聚四氟橡胶,可有效阻止轴向泄漏。磁力机械油封显著的特点是用磁力取代了传统骨架油封,依靠弹簧的弹力来消除间隙。油封耐用、密封可靠。
2.2 方案实施
将原骨架油封改为磁力机械油封前,必须对主轴承座轴承外圈压盖结构进行简单改进,改进后的轴承外圈压盖结构见图2。其加工尺寸由动静环的实际尺寸决定,且必须同时满足以下两个条件:
①、动环与轴承外圈压盖之间应有较大的间隙,便于动环旋转;
②、静环与轴承外圈压盖为过盈配合以防止静环转动,且静环嵌入轴承外圈压盖的深度应大于静环厚度的2/3。
2.3 磁力机械油封的安装步骤
安装前,去除圆振动筛主轴表面的毛刺等异物,擦试干净后抹上油脂;在静环和轴承外圈压盖的接合面均匀的涂上乐泰密封胶。
①将静环装入轴承外圈压盖(具有耐磨材料的一端向内);
②清理动环接合表面保持清洁;
③将动环从轴端推至适当位置(具有耐磨材料的一面向外);在推入时注意保持平直,不能绕轴转动,以免损伤“ O”型密封圈;
④装入轴承外圈压盖,使动环和静环紧密结合,检查调整动静环贴合间隙与同轴度;
⑤推动轴承外圈压盖及动静环到位置并进行固定安装。磁力机械油封安装后的装配见图2。
3、结论
圆振动筛主轴承座采用磁力机械油封至今运转已有半年多,使用中未发现油泄漏,轴承润滑状况良好,设备故障大大减少,保障了生产的顺利进行。磁力机械油封作为一种新型的先进密封技术,一次性投资较大,但采用磁力机械油封后,可大幅度减少设备润滑油消耗和日常维修费用,显著改善设备性能和技术状况,产品性价比高,应用前景广阔。
来源：《矿业快报》
（版权归原作者或机构所有）
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File: D:\database\translate.php
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Function: _error_handler
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Function: _error_handler
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File: D:\database\translate.php
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Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
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Function: lang
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File: D:\database\translate.php
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Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
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File: D:\database\translate.php
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Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
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Function: lang
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File: D:\database\translate.php
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Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
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