回转泵是利用齿轮传动的回转齿轮带动叶轮旋转的机械它具有结构紧凑，运转平稳可靠，能耗低，移动方便等优点它是一种新型节能设备，其工作原理是：当齿轮传动的柱塞与泵壳接触时就会产生相对的压力，而当叶轮旋转时就会产生相对位移从而达到泵送目的；并且由于回转泵的回转机构可以360度旋转，因此被广泛用于建筑施工工程上。
齿轮和轴都是通过联轴器连接的一个相对轴向柱塞进行旋转运动；同时齿轮也可以通过一根轴向柱塞运动来完成回转的工作而回转转子又可以根据需要自由的改变运动方向或速度，因此回转泵被广泛用于建筑施工中的各种施工设备中。
齿轮泵优点:1节能明显;2结构简单运行可靠;3重量轻;4结构紧凑;5重量轻;6工作可靠;7安装简便;8能输送介质广泛可输送不同粘度的液体：粘度在6-70m/s之间；液力适用范围广;9能输送不受限制的介质：输送腐蚀性溶液;10可输送中性或酸性介质等.回转泵还可以输送介质：各种含颗粒状或粒径小于10μm以上的非悬浮固体物体.一般工作温度70-90℃.输送介质常用水.油。
\输送介质主要是水和油.水.油.空气和其他介质.液压油等.液压系统中油液通过密封室进入泵体或排出腔内；油液由一个入口进入泵腔时压力较低（一般在0-6MPa)而通过另一个入口时压力就会增加而达到极限压力（通常大于12MPa)后再减压回油到出口。
常见品种有离心泵，轴向泵体和柱塞泵系统 90-L-130-KP-1-NN-80-P-3-F1-F-03-GBA-35-35-24 90L130KP1NN80P3F1F03GBA353524 90L130-KP-1-NN-80-P-3-F1-F-03-GBA-45-45-24 90L130KP1NN80P3F1F03GBA454524 90-L-130-KP-1-NN-80-P-3-F1-F-03-GBA-45-45-24 90L130KP1NN80P3F1F03GBA454524 90L130-KP-1-NN-80-P-3-F1-H-03-GBA-38-38-24 90L130KP1NN80P3F1H03GBA383824 90-L-130-KP-1-NN-80-P-3-F1-H-03-GBA-38-38-24 90L130KP1NN80P3F1H03GBA383824 90L130-KP-1-NN-80-R-3-C8-H-03-GBA-26-26-24 90L130KP1NN80R3C8H03GBA262624 90-L-130-KP-1-NN-80-R-3-C8-H-03-GBA-26-26-24 90L130KP1NN80R3C8H03GBA262624 90L130-KP-1-NN-80-R-3-F1-H-00-GBA-29-29-24 90L130KP1NN80R3F1H00GBA292924 90-L-130-KP-1-NN-80-R-3-F1-H-00-GBA-29-29-24 90L130KP1NN80R3F1H00GBA292924 90L130-KP-1-NN-80-R-3-F1-H-00-GBA-38-38-24 90L130KP1NN80R3F1H00GBA383824 90-L-130-KP-1-NN-80-R-3-F1-H-00-GBA-38-38-24 90L130KP1NN80R3F1H00GBA383824 90L130-KP-1-NN-80-R-3-F1-H-00-GBA-42-42-24 90L130KP1NN80R3F1H00GBA424224 90-L-130-KP-1-NN-80-R-3-F1-H-00-GBA-42-42-24 90L130KP1NN80R3F1H00GBA424224 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