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  • 机械密封拆装时注意的事项
  • 本站编辑:杭州久密机械科技有限公司发布日期:2020-01-08 20:34 浏览次数:

机械密封是指由至少一对垂直于旋转轴线的端面在流体压力和补偿机构弹力(或磁力)的作用下以及辅助密封的配合下保持贴合并相对滑动而构成的防止流体泄漏的装置,不仅精度高,材料也特殊,所以安装和拆卸要严格按照正确的方法步骤进行:

 1.装配前要严格检查元件有无裂纹等损坏,弹簧上的喷涂层有无掉皮。

 2.严格检查动、静环密封面,不得有划痕碰伤,装配时密封面上涂一层清洁机油或透平油。

 3.在整个安装过程中,元件不能用不干净的布或棉纱擦洗,特别是密封面,应用清洁而柔软的纱布、脱脂棉之类擦洗。

    4.在调整机械密封时,要注意弹簧压缩量,其数值参照产品说明书。并在移动动环时,不能将“O”形密封圈斜卷在动环内。允许滴漏量为每分钟约5滴。

    5.装配中要十分注意避免零件偏斜,弹簧座紧定螺钉要均匀把紧。

    6.拆卸时要耐心仔细,尤其是塑料制品,不许动用手锤、扁铲等工具乱撬,以防破坏动、静环、密封圈。如遇有污垢拆不下时,不能勉强进行,应先予以清洗干净,然后逐步拆卸。

    7.在拆卸时不要急于求成,要先观察,在拆装过程中也要随时留意,甚至做好记号,便于清洗后正确安装。

Mechanical seal is composed of at least one pair of end faces perpendicular to the axis of rotation under the action of fluid pressure and elastic or magnetic force of compensation mechanism, and with the cooperation of auxiliary seal, which keeps sticking and sliding relatively to prevent fluid leakage, not only high precision, material is also special, so installation and disassembly should be strictly in accordance with the correct method steps: 1. Before Assembly, check the components strictly for cracks and other damage, spring on the spray coating has no peeling. 2. Strictly check the dynamic and static ring sealing surface, no scratches or scratches, assembly seal surface coated with a layer of cleaning oil or turbine oil. 3. In the entire installation process, components can not be cleaned with dirty cloth or cotton yarn, especially the sealing surface, the application of clean and soft gauze, absorbent cotton, such as scrub. 4. In adjusting the mechanical seal, to pay attention to the spring compression, its numerical value refer to the product specification. And when moving the ring, the "o"-shaped seal ring can not be obliquely rolled in the moving ring. The allowable drip is about 5 drops per minute. 5. Assembly to pay great attention to avoid parts deflection, spring seat set screw to tighten evenly. 6. Disassembly to be patient and careful, especially plastic products, do not use hand hammer, flat shovel and other tools to pry, to prevent damage to the dynamic, static ring, Seal Ring. If there is dirt can not be removed, can not be forced to carry out, should be cleaned first, and then gradually dismantled. Kill. In the demolition do not seek success, to observe first, in the process of disassembly should also be kept in mind, or even a good mark, easy to clean after the correct installation.