当前,在国内外机械采油中,有杆抽油泵的球阀基本上都采用全刚性的限制阀球跳高的阀罩。在深井、泵液有强烈腐蚀活性和含砂量大的情况下,泵阀往往因阀罩的磨损、变形和破坏而损坏,这种情况在很大程度上与阀罩的刚性结构(阀罩受冲击-弯曲载荷)有关。苏联研制了一种配置弹性阀罩的泵阀, At present, at home and abroad in mechanical oil production, sucker rod pumps have basically adopted the full rigidity of the valve ball limit valve cover high. In deep wells where the pump fluid is highly corrosive and the sand content is high, the pump valve tends to be damaged by wear, deformation and damage to the valve housing, which largely depends on the rigidity of the valve housing Impact - bending load). The Soviet Union developed a flexible valve cover configuration valve,