| 摘要 |
<p>The utility model discloses a pressure fastening pipeline connecting device. The device consists of a seal sleeve body and two seal ring bodies, wherein the outer circumferential surfaces of the two ends of the seal sleeve body are in a second-order step shape in central symmetry; the middle annular belt of the middle part of the outer circumferential surface of the seal sleeve body is of an annular groove structure; the two seal ring bodies are sleeved on two ends of the seal sleeve body respectively; the inner circumferential surfaces of the seal ring bodies are in a first-order step shape; the inner walls of the two ends of the seal sleeve body are fixedly provided with a first seal ring and a second seal ring in sequence; and an annular bump is arranged on the outer wall of the seal sleeve body corresponding to the position of the second seal ring. The device is suitable for connection of pipelines of various external diameter specifications and various materials for various industrial, civil and construction engineering and pipelines for conveying various mediums except for a cast iron material.</p> |
