| 自吸泵自吸原理 |
| 添加时间：2018/11/7 9:24:39 浏览次数： |
| 自吸泵是南方常用的一种泵。原理是利用水的流速冲力，叶轮带动泵叶轮把水抽到河岸上面。这种泵扔到河里就能抽水，不过必须水流急，或有落差的地方。 Self - priming pump is a common type of pump in the south. The principle is to make use of the velocity of water flow, and the impeller drives the pump impeller to draw water onto the river bank. Such pumps can be pumped into the river, but they must be in a hurry or fall. 自吸泵 Self-priming pump 自吸是指在吸入管内不用充满液体(但泵体中必须有足够的液体)的情况下启动泵,泵本身能自动排除吸入管内的气体,而后进入正常工作,泵在初次启动时必须灌入足够液体,以后启动时则由存留在泵体内的液体来保证泵能再次启动. Self suction is to start the pump when the suction pipe is not filled with liquid (but there must be enough liquid in the pump body). The pump itself can automatically exclude the gas in the suction pipe and then enter the normal work. The pump must be filled with enough liquid at the first start of the pump, and then the pump is kept in the pump to ensure that the pump can be started again when the pump is first started. 自吸泵的自吸时间是指泵在抽送常温清洁液体,安装高度为允许吸入真空度( )减去0.5 时,从泵启动到压力稳定所需的最短时间,也就是泵排尽吸入管内空气所需的时间.对离心式自吸泵,吸液面与泵进口之间的吸入管路长度应小于泵安装高度再加20D(吸入管孔直径);对旋涡式自吸泵吸液面与泵进口之间的吸入管路长度应小于泵安装高度再加2 . The self priming time of the self suction pump refers to the minimum time required for the suction of the suction vacuum () minus 0.5 when the suction vacuum degree is reduced. The suction line between the suction pump and the inlet of the pump should be less than the pump. Installation height plus 20D (suction hole diameter). The suction pipeline length between the suction surface and the pump inlet of the vortex self-priming pump should be less than the pump installation height plus two. 普通离心泵在吸入管路的最下端装有底阀,在启动前需要较多的水把整个吸入管路充满.底阀常常由于夹入杂物或本身关闭不严而出故障,消除这些故障有时要花费很大劳动量,特别是在冬天。 Ordinary centrifugal pump at the bottom of the suction line is equipped with a bottom valve. Before starting the pump, more water is needed to fill the whole suction line. The bottom valve is often broken down because of inclusion or itself, and the elimination of these failures is sometimes costly, especially in winter. 自吸泵的吸入口一般都高于叶轮吸入口,只要在泵体内灌水即可启动,没有上述缺陷。劳动此对流动排灌,移动工作、启动频繁和灌水困难的场合使用自吸泵是很方便的,农业、建筑施工、油槽车卸油,油库、消防和造船等很多地方采用自吸泵。 The suction port of self priming pump is generally higher than that of impeller suction port. As long as irrigation is started inside the pump, there is no such defect. It is very convenient to use the self-priming pump for the flow and irrigation, the mobile work, the frequent start and the difficult irrigation. The self-priming pump is used in many places, such as agriculture, construction, oil tank truck unloading, oil depot, fire fighting and shipbuilding. |
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