Pump noise is inherent in the original pump manufacturing technology has not yet reached the "robustness" requirement. Pump works in terms of roller hydraulic maintenance Which is good, the pump shaft each revolution, each pump plunger only have to make one cycle suction pressure of the oil. Upon completion of the plunger suction pressure oil flow distribution process, when the rotation after the transition to the drain region on the cylinder plunger bore suck oil from the oil suction port plate on the window, the full low-pressure oil plunger bore To the instant high-pressure oil drain valve plate on the window inside before turning (Figure 1, with Japan's Kawasaki K3V pump valve plate, for example) roller hydraulic maintenance of telephone, high-pressure oil discharge of oil from a window of the second ` Pre boost hole and triangular groove by the plunger into the cylinder bore to increase the hydraulic cavity formed intrusion traffic impact (see Figure II left) rinse cycle parameters to get a good choice of a good quality wash cycle and rinse the pressure Traffic is a very important guarantee. Rinse the general accuracy of 30-40 units circuit hydraulic system for flushing time when NAS7 level often 10-15 days, for hydraulic servo system when the required accuracy rinse rinse time NAS5 level or even longer. For those relatively short construction period, the project roller hydraulic repair prices, speed up the progress of the hydraulic system flushing shorten processing time is all the more urgent. You can say it is a post-construction project currently very difficult problem. To achieve the desired effect of washing, rinsing must Reynolds in 4000 (we know that the critical Reynolds number Re smooth circular wall pipes (L) = 2200-2300). Engineering practice tells us that after the pickling steel pipe piping processing time of each unit circuit 3-4 hours after the test oil samples cleanliness basically reached NAS6-7 level, when a short circuit flushing oil sample cleanliness even to NAS4 -5 level. We know that the kinematic viscosity of the Reynolds number and the pipe size, flow rate of the pipeline media and media related. Roller hydraulic maintenance organizations | Yan'an roller hydraulic service | Xi'an Chengtong hydraulic service from Xi'an Chengtong hydraulic maintenance Limited. Xi'an-hydraulic-repair Ltd. (www.huosu360.com) strong, credible, in Xi'an of industrial maintenance, installation and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Xi'an-hydraulic service and you work through into the brilliant, for a better future!