Downstream movable valve cover of oil well pump

• Main Author: NI HUALONG
• Format: Patent
• Language: Chinese; English
• Published: 03.07.2020
• Subjects: BLASTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model provides a downstream movable valve cover of an oil well pump. Wherein the first cavity and the second cavity are formed above and below the body respectively, a plurality of oil outlets are formed in the side wall of the second cavity, a movable valve ball is arranged in the first cavity, a partition plate suitable for limiting the moving position of the valve ball is arranged between the first cavity and the second cavity, and at least two through holes are formed in the partition plate. Due to the fact that the valve ball only moves in the first cavity under the action ofthe partition plate and cannot be in contact friction with the connecting rib between the two adjacent oil outlets of the second cavity, compared with the prior art, the service life of the downstreammovable valve cover of the oil well pump is prolonged. 本实用新型提供一种抽油泵下游动凡尔罩，包括本体，以及分别成型于本体上方和下方的第一腔室和第二腔室，第二腔室的侧壁设有若干出油口，第一腔室内设有可游动的凡尔球，第一腔室和第二腔室之间设有适于限制凡尔球移动位置的隔板，隔板上设有至少两个贯通的通孔。由于在隔板的作用下凡尔球仅在第一腔室内游动，而不会与第二腔室的相邻两个出油口之间的连接筋条接触摩