2results about How to "With self-centering function" patented technology

This utility model relates to the field of valve pressure testing technology and discloses a pressure testing device for ball valve testing. The device includes a base, a testing component on the top of the base, a ball valve body on the top of the base, and a clamping component on the top of the base. In this device, the outer wall of a conical sleeve is interference-fitted with the ball valve body to achieve installation. The conical sleeve has a self-centering function; its conical outer contour guides the ball valve to automatically center and align, eliminating manual alignment and repeated adjustments, significantly improving clamping efficiency before pressure testing. It automatically adapts to pipes with different inner diameters, allowing the device to accommodate welded or flanged ball valves. The support rod abuts against the bottom of the ball valve body, providing vertical upward support and preventing the ball valve from sliding or dislodging due to water or air pressure impact during pressure testing, thus improving clamping accuracy and structural stability.

The utility model discloses a manual unlocking structure for mouth cover executor, including casing, lock bar, sliding ring, spring, lock tongue, driving part, transmission disc and lever, one end of lock bar rotates and passes through the connecting hole on casing, and through spring setting in casing inner chamber, the peripheral wall of lock bar is equipped with the sliding slot and the slot, and sliding ring is sleeved on lock bar, and can rotatably install in casing inner chamber, the slider of sliding ring inner ring is matched with the sliding slot, and lock tongue is slidably arranged in casing, driving part is installed in casing, is suitable for through transmission disc drive lock tongue and inserts or separates from the slot, and lever is rotatably arranged in casing through torsional spring, and one end of lever is equipped with the lever block for the lever of transmission disc, and its other end exposes in casing outside and is suitable for being connected with pull rope, the utility model discloses through the cooperation of lock tongue, transmission disc, lever and torsional spring, so that when meeting the emergency, can realize the manual unlocking of lock tongue, simple structure, small space occupation, effectively saves the cost.