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原文：
  脱硫泵泵头部分(包括前后泵壳、蜗壳、前后护板、叶轮等)结 构不同外，其余部分结构相似，采用同一系列的传动部分，下面按泵头部分，轴封部分及传动部分，分别叙述其结构特点。 　　1、泵头部分：GMZ型系列泵为双泵壳结构，即前泵壳、后泵壳和带有可更换的过流部分(包括叶轮、蜗壳、前护板、后护板)。前后泵壳根据工作压力，采 用灰铸铁或球墨铸铁制造，垂直中开，用螺栓连接，后泵壳有止口与托架用螺栓连接，泵的吐出口可按八个角度旋转安装，叶轮前后盖板带有 背叶片以减少泄漏，提高泵的寿命及效率。各型泵进口均为水平方向，从传动方向看泵为顺时旋转。 　　2、轴封部分：轴封有三种形式， 副叶轮轴封及填料轴封，机械密封。 　　(1)副叶轮轴封：在泵进口正压力值不大于泵出口压力值的10%时的单级泵或多级串联第三级泵， 可以采用副叶轮轴封，副叶轮轴封具有不稀释矿浆，密封效果好等优点。 　　(2)填料轴封：填料轴封结构简单，维修方便，需使用轴封水 ，对于不适于用副叶轮轴封的工况及泵吸上使用工况可采用填料轴封。 　　(3)机械密封：对于不适于以上两种轴封的工况下，采用机械密 封，减少轴封部分的维修次数。 　　3、传动部分：本系列泵均采用同一系列的传动，包括托架和轴承组件，泵轴直径大，刚性好，悬臂 短，在恶劣的工况下不会弯曲和振动。轴承选用单列圆锥滚子轴承和角接触球轴承组合使用，能够承受泵的最大轴向及径向载荷，轴承采用锂 基润滑脂润滑，这种润滑的优点在于：油膜强度高；油脂粘附性好，不易流失，使用时间较长；密封简单，轴承体两端装有密封端盖，能有效防止矿浆等污物进入轴承。

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译文：
Desulfurization pump structure described Desulfurization pump pump head components (including before and after the pump casing, volute, front and rear guards, impeller, etc.) different structures, the remaining part of the structure is similar, using the same series, transmission parts, according to the following part of the pump head, shaft seal parts and transmission parts, its structural features were described. 1, the pump head part: GMZ series pump is double-pump shell structure, that is, before the pump housing, pump casing and after the over-flow with replaceable parts (including impeller, volute, the former guard, after the guard). According to work around the pump casing pressure, the use of gray cast iron or ductile iron, vertical in the open, connected by bolts, there is only the mouth of the pump housing and bracket with bolts, eight pump outlet angle of rotation can be installed around the impeller cover with the back blade to reduce leakage, increase pump life and efficiency. Imports of various types of pumps are horizontal, looking from the direction of the pump to drive clockwise rotation. 2, shaft seal parts: the shaft has three forms, Vice impeller shaft seal and packing seal, mechanical seal. (1) Vice impeller shaft seal: the value of positive pressure in the pump suction pump outlet pressure is not greater than 10% of the value of single-stage or multi-stage pumps in series III pump impeller shaft seal can be used vice, vice impeller shaft seal with do not dilute the slurry, and good sealing effect. (2) Gland packing: packing seal structure, easy maintenance, use of water seal, impeller shaft seal for the deputy is not appropriate working conditions and work conditions on the pump shaft seal can be used to fill. (3) mechanical seal: not suitable for the seal of the above two conditions, mechanical seal, shaft seal part of the maintenance to reduce the number of times. 3, transmission parts: This series pumps are used the same series of transmission, including the bracket and bearing assembly, shaft diameter, rigid, cantilever short, do not bending in bad working conditions and vibration. Selection of single row tapered roller bearings and angular contact ball bearings bearings used in combination, can withstand the maximum axial and radial pump load, the use of lithium grease lubricated bearings, the lubrication advantages: high strength film; oil adhesion well, not easy to drain, use a longer time; seal is simple, with both ends of the bearing seal cover, can effectively prevent the slurry and other contaminants into the bearing.

更多新闻：

• 化工泵叶轮和转子的检修
• 化工泵动密封、静密封部分的检修
• 化工泵联轴器检修

原文来源：http://www.1huagongbeng.com/

2011-12-27 08:49

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