钛龙脱硫泵的结构原理与运行过程
使用过钛龙脱硫泵的朋友都知道，脱硫泵的泵头部分(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，下面我们分别叙述其结构特点。
1、泵头部分：LGMZ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、脱硫泵轴封部分：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：钛龙脱硫泵均采用同一系列的传动，包括托架和轴承组件，脱硫泵的泵轴直径大，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Z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；钛龙脱硫泵的密封简单，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。
Structure principle and operation process of titanium dragon desulfurization pump
All friends who have used the titanium dragon desulfurization pump know that the structure of the pump head of the desulfurization pump (including the front and rear pump shells, volutes, front and rear guard plates, impellers, etc.) is different, and the other parts are similar in structure. The same series of transmission parts are adopted. The following is according to the pump head part, shaft seal part and transmission part. We will describe their structural characteristics respectively.
1. Pump head part: lgmz series pump is of double pump shell structure, namely front pump shell, rear pump shell and replaceable overflow part (including impeller, volute, front guard plate and rear guard plate). According to the working pressure, the front and rear pump shells are made of gray cast iron or nodular cast iron. They are vertically split and connected by bolts. The rear pump shell has a stop and is connected with the bracket by bolts. The discharge outlet of the pump can be rotated at eight angles. The front and rear cover plates of the impeller are equipped with back blades to reduce leakage and improve the service life and efficiency of the pump. Each type of pump inlet is horizontal direction, from the drive direction, the pump is clockwise rotation.
2. Desulfurization pump shaft seal part: there are three forms of shaft seal, auxiliary impeller shaft seal and packing shaft seal, mechanical seal.
(1) Auxiliary impeller shaft seal: when the positive pressure value at the pump inlet is not greater than 10% of the pump outlet pressure value, the auxiliary impeller shaft seal can be used for single-stage pump or multi-stage series tertiary pump. The auxiliary impeller shaft seal has the advantages of no dilution of pulp and good sealing effect.
(2) Packing shaft seal: the packing shaft seal is simple in structure and convenient in maintenance, so it needs to use the shaft seal water. For the working conditions that are not suitable for the auxiliary impeller shaft seal and the pump suction, the packing shaft seal can be used.
(3) Mechanical seal: for the condition not suitable for the above two kinds of shaft seal, mechanical seal is adopted to reduce the maintenance times of shaft seal part.
3. Transmission part: titanium dragon desulfurization pump adopts the same series of transmission, including bracket and bearing components. The pump shaft of desulfurization pump has large diameter, good rigidity, short cantilever, and will not bend and vibrate under harsh conditions. Single row tapered roller bearing and angular contact ball bearing are used in combination, which can bear the large axial and radial load of pump. The bearing is lubricated with lithium base grease. The advantages of this lubrication are: high oil film strength; good adhesion of grease; long service life; simple sealing of titanium dragon desulfurization pump; sealing end covers at both ends of bearing body, which can effectively prevent slurry Wait for dirt to enter the bearing.