双吸泵普通适用于工厂、城市、矿山、农田、水利工程等范畴，因而它的用处是比拟普遍的，那么经过它在工作上的高效率，我们需求控制的除了它的性能，还需求对它的原理有个整体的了解，那么接下来我们就一同来看一下。 双吸泵的根本部件是高速旋转的叶轮和固定的蜗牛形泵壳。具有若干个（通常为4～12个）后弯叶片的叶轮紧固于泵轴上，并随泵轴由电机驱动作高速旋转。叶轮是直接对泵内液体做功的部件，为泵的供能安装。泵壳中央的吸入口与吸入管路相衔接，吸入管路的底部装有单向底阀。泵壳侧旁的排出口与装有调理阀门的排出管路相衔接。 当双吸泵启动后，泵轴带动叶轮一同作高速旋转运动，迫使预先充灌在叶片间液体旋转，在惯性向心力的作用下，液体自叶轮中心向外周作径向运动。液体在流经叶轮的运动过程取得了能量，静压能增高，流速增大。当液体分开叶轮进入泵壳后，由于壳内流道逐步扩展而减速，局部动能转化为静压能，沿切向流入排出管路。所以蜗形泵壳不只是聚集由叶轮番出液体的部件，而且又是一个转能安装。当液体自叶轮中心甩向外周的同时，叶轮中心构成低压区，在贮槽液面与叶轮中心总势能差的作用下，致使液体被吸进叶轮中心。依托叶轮的不时运转，液体便连续地被吸入和排出。液体在泵中取得的机械能量最终表现为静压能的提。
Double suction pumps are generally applicable to factories, cities, mines, farmland, water conservancy projects and other areas, so its use is comparatively universal. After its high efficiency in work, we need to control its performance, but also need to have an overall understanding of its principles. Then we will take a look at it together.
The basic components of double suction pump are high-speed rotating impeller and fixed snail pump shell. The impeller with several (usually 4-12) back-curved blades is fastened to the pump shaft and rotates at high speed with the motor driving the pump shaft. The impeller is a part that directly works on the liquid in the pump, and is installed for the energy supply of the pump. The suction inlet in the center of the pump shell is connected with the suction pipeline, and a one-way bottom valve is installed at the bottom of the suction pipeline. The discharge outlet beside the pump housing is connected with the discharge pipeline equipped with a conditioning valve.
When the double suction pump starts, the pump shaft drives the impeller to rotate at a high speed, forcing the liquid pre-filled between the blades to rotate. Under the action of inertial centripetal force, the liquid moves radially from the center of the impeller to the outside. In the process of liquid moving through impeller, energy is obtained, static pressure energy is increased, and flow velocity is increased. When the liquid separates the impeller and enters the pump shell, it slows down due to the gradual expansion of the flow passage in the shell. The local kinetic energy is transformed into static pressure energy, and finally flows into the discharge pipeline along the tangential direction. So the volute pump case is not only a part gathering liquid from impeller, but also a rotating energy installation. When the liquid is thrown from the center of the impeller to the outside, the center of the impeller forms a low-pressure zone. Under the action of the difference of the total potential energy between the liquid level of the tank and the center of the impeller, the liquid is sucked into the center of the impeller. Relying on the impeller running from time to time, the liquid is continuously absorbed and discharged. The mechanical energy obtained by the liquid in the pump is ultimately expressed as the increase of static pressure energy.