What are the conditions required for hydraulic pumps to complete oil absorption and compression?
Volume conditions: oil absorption cavity from small to large, complete oil absorption, oil pressure chamber has become smaller, complete pressure oil.Sealing conditions: the hydraulic pump itself should have good sealing
2, the change of working volume is periodic, and in each cycle, the oil absorption process is changed from small to big, and the process of oil pressure is changed from large to small;3, suction oil cavity must be separated from each other without interference.
There must be one or more sealing volumes, and the volume of work is variable;
