农用工程抽水泵@临西县农用工程抽水泵@农用工程抽水泵300S19

Bushing composition, shaft parts using flat keys and round nuts fixed, locking, so that it becomes one, the entire rotor by the two ends of the bearing support. The impeller of the medium open pump transmits the energy of the original motive through the action of centrifugal force to the liquid in the pump, which increases the speed and pressure of the liquid, causes the liquid in the pump to drain out, and the liquid in the inlet pipe is sucked in. The medium open pump impeller is installed in the pump shell and fastened to the pump shaft, and the pump shaft is directly driven by the motor. The pump shell has a liquid connected to the tube. The liquid enters the pump through the bottom valve and tube. The liquid outlet on the pump shell is connected with the discharge pipe. When the speed of the pump is certain, its pressure head, the flow rate is related to the impeller diameter. The shape of the impeller blade of the middle open pump lies in the accord with the flow law. The motion law of liquid in impeller should be studied first. In order to study the flow law of liquid in the impeller, we take the liquid flow in the impeller from the front cover to the back cover to the hard layer, each layer of phase method on a flow surface. The liquid flows only along each layer, and the liquid of the layer and layer does not mix with each other.

运行数据：出口直径：DN=80～800mm流量：50～11600m3/h(额定点)扬程：H＝7.6～200m(额定点)许用工作压力：≤2.5MPa许用试验压力：≤3.75MPa介质：清水或物理化学性质类似于清水的其它液体(固体颗粒≤80mg/L)。温度：≤105°C水力经优化设计三水力模型，不仅使泵具有优异的水力性能，并且没有轴向力(理论上)这一困扰水泵特别是大型水泵运行的难题。泵体、泵盖、叶轮经精密铸造，过流表面光滑提高了泵的抗汽蚀性能和效率。密封根据输送介质或用户要求采用填料密封或机械密封，不受转向限制。对于填料密封，有足够的空间用于更换填料。jdhuiquan4.13

农用工程抽水泵@临西县农用工程抽水泵@农用工程抽水泵300S19

In the event of a major failure, the entire water treatment process will be paralyzed, bringing great inconvenience to the people's lives and production. According to the current analysis of the operation of the pump in the S series, the common faults are: The impeller has been subjected to surface corrosion in the sewage for a long time, the early fatigue fracture of the blades, the wear of the pump body overflow parts, the bending of the pump shaft, the burnout of the motor and the bearing, etc. It is very important to study the operation Safety, through the research of this content, not only improve the safety of the pump, but also improve its service life. And in the process of water treatment work, the use of the system is often changed, if not in accordance with the needs to be met, will affect the normal operation of production, resulting in greater waste. In order to manage effectively, it is necessary to carry out remote monitoring and field control of production system, and in order to improve production efficiency and safety, it is also necessary to detect the key parts of the pump in the S series. Thus, the research of automatic control technology is an important technology development trend.

产品概述：S、SA系列双吸中开泵，主要供输送温度不高于105°C的清水或理化性质类似于水的液体。适用于自来水厂、泵站、电站、空调循环用水、采暖用热水循环、工业供水系统、消防系统、船舶、炼油工业(一般性液体)等输送液体的场合。

产品特点：

1、内置式密封润滑结构：泵内置式密封润滑结构，密封循环水对泵密封系统的润滑、冲洗更为直接、有效。  

2、外形美观：直线型的外观并在泵盖上附加强筋，内置式密封润滑结构使泵整体结构浑然一体，灵活的结构设计使泵更加精美大方。  

3、率：采用CFD计算流体动力学，分析计算出泵内压力分布和速度分布关系、优化泵的流道设计，确保泵有的水力形线，提高了泵的效率。泵体采用双流道设计，以减小径向力。泵体、泵盖、叶轮等过流部采用树脂砂板模造型，保证了外观及流道尺寸以及泵的水力效率。S、SA系列双吸中开泵效率比一般双吸泵高3～5％。  

4、平衡精度高：转子部件动平衡精度为G1。0级。  

5、轴：轴短且刚性好，增加轴径，以延长轴承和机械密封的使用寿命。轴为全封结构，确保了不与介质接触，不锈蚀，使用寿命长。  

6、双蜗壳：高扬程泵采用双蜗壳结构，减轻了径向力。

农用工程抽水泵@临西县农用工程抽水泵@农用工程抽水泵300S19

Side can be started. Pump commissioning should meet the following requirements: The pump should be in the specified speed and operating range of operation, continuous commissioning time should not be less than 30min, the pump water supply should be normal, water temperature and water supply pressure should be in line with the requirements of the manufacturer; The temperature rise of the bearing should not be higher than 30 ℃, and the connection should be strict. 4 No leakage phenomenon, there should be no abnormal sound and vibration in operation, after the commissioning, should be released in the pump water, and then use water to rinse the pump clean. S series of open pumps can be basically supplied to factories, cities, power stations, water conservancy projects and so on can be used as drainage or feed pumps, but also for farmland irrigation. For the transport of water without solid particles or physical, chemical properties similar to water other liquids, the transmission of the medium temperature of 0℃~80℃, allowing the import pressure. In the water treatment industry, the S-series Open pump is an extremely important equipment. The Operation safety of the open pump in the S series directly affects the normal operation of the water treatment process.

工作条件：

1．许用工作压力为2.5MPa；即泵入口压力+泵扬程≤2.5MPa。根据泵壳承受的压力，泵体和泵盖材质采用灰口铸铁(1.6MPa)、球墨铸铁(2.0MPa)、铸钢(2.5MPa)。在订货时敬请注明泵的承压情况或材质。

2．介质：温度≤105°C的清水或物理化学性质类似清水的其它液体(固体颗粒≤80mg/L)。 轴承1、采用油脂润滑的封闭式滚动轴承，维护简单，运行时间长；2、配备恒定油位的油杯，也可用稀油润滑；

3、选用进口(SKF、NSK、NTN)高质量轴承，运行平稳，噪音低，使用寿命长。 结构 结构紧凑、稳定性好。

S、SA系列双吸中开泵为泵壳中开结构，进出口均在泵体上，检修时只需吊出泵盖，转子部件便可移出进行检修作业，而不需拆卸管路，十分方便。 根据需要电动机(驱动机)可以在左端也可在右端，方便现场安装。结构上缩短转子部件轴向尺寸，轴的钢性更好，运行更稳定可靠。设有泵体密封环，而叶轮密封环为可选用件。密封环磨损后可以更换，减少了运行维护费用。

五、型号意义：

例如：300S58A

　　　300-泵入口直径(mm)

　　　S-单级双吸水平中开式离心清水泵

　　　58-设计点扬程(m)

　　　A-叶轮外径改变标志

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