High pressure VR is stifled

• Main Author: LIU AIWU
• Format: Patent
• Language: Chinese; English
• Published: 30.11.2016
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model discloses a high pressure VR is stifled, include: the body: it is outside to be formed with outer hexagonal, external screw thread and annular groove from head end to tail end in proper order, and it is inside follows head end to tail end and be formed with interior threaded cavity, spool chamber and spring cavity in proper order, interior threaded cavity inner wall is equipped with the internal thread, the case: arrange in in the spool chamber, its afterbody is formed with the inclined plane boss, the spool chamber is equipped with the inclined plane corresponding with the inclined plane boss, the spring: arrange in in the spring cavity, its head end is connected to the tail end of case, its end of fixed is in in the spring cavity, the sealing washer: arrange in in the annular groove. The utility model discloses a VR is stifled, simple structure, and convenient operation realizes the snubbing serving completely, realizes safety, environmental protection, high -efficient production. 本实用新型公开了