精品无码A片在线观看,日本xxxx18免费,无码一二大地三区,粗硬黑大欧美aaaa片视频

鉆探式抽沙船泵性能表中的吸程是指常溫清水條件下泵的抗汽蝕特性。采沙船在抽送泥沙作業(yè)時(shí)應(yīng)盡可能使泵的進(jìn)口壓力為正壓。泥沙中含有較大固體顆粒時(shí)泵的流量揚(yáng)程也會(huì)受到影響，選型時(shí)應(yīng)對(duì)介質(zhì)情況予以考量。挖沙船泥沙泵在工作現(xiàn)場(chǎng)固定后，應(yīng)先檢查原動(dòng)機(jī)主軸與泵主軸是否在同一軸線上，若不同軸應(yīng)即作精準(zhǔn)調(diào)整。

Drilling style pumping sand pump performance in the absorption process refers to the anti cavitation characteristics under the condition of room temperature water pump. Sand mining in sediment pumping operations should as far as possible so that the pump inlet pressure for positive pressure. Sediment containing larger solids when the pump flow head will be affected, the selection of the media to consider the situation. Dredger mud pump is fixed at the work site, should first check the prime mover shaft and the pump shaft is in the same axis, if different shaft should be that for accurate adjustment.