The former is the process of inhalation and discharged at the same pump cylinder alternately conducted by the inhalationvalve and exhaust valve control;
前者的吸入和排出过程在同一泵缸内交替进行,并由吸入阀和排出阀加以控制;
2
Working principle: piston moves from left to right, form a negative pressure pump cylinder, the liquid tank into the pump by the inhalationvalve cylinder.