3results about How to "Automatically compensates for wear" patented technology

The utility model provides a steam extraction check valve, and belongs to the technical field of check valves, the steam extraction check valve comprises a valve body, the valve body comprises an inlet flow channel, a valve cavity and an outlet flow channel, a valve rod is transversely fixed in the valve cavity, a valve clack is rotatably arranged on the valve rod, a mounting groove is formed in one end, close to the valve cavity, of the inlet flow channel, and a base ring, a valve seat ring and a fixing ring are arranged in the mounting groove; an elastic sealing ring is arranged between the base ring and the valve seat ring, the outer ring of the elastic sealing ring is closed, the inner ring of the elastic sealing ring is provided with an opening gradually expanding towards the center of the mounting groove, the two side walls of the opening abut against the base ring and the valve seat ring respectively, and an elastic piece abuts against the interior of the opening. The elastic sealing ring with the opening is arranged between the base ring and the valve seat ring, impact energy generated when the valve clack is closed can be absorbed, meanwhile, the elastic sealing ring in the special shape can form more reliable sealing with the two side portions under medium impact, and medium fluid channeling is avoided.

The utility model relates to the technical field of mechanical seals, and discloses a mechanical seal with driving ring sleeves, which comprises a connecting sleeve, movable ring sleeves are fixedly sleeved on the left side and the right side of the connecting sleeve, a static ring is arranged on the left side of the movable ring sleeve on the left side, a shaft sleeve is arranged on the right side of the movable ring sleeve on the right side, and a movable ring is arranged between the left movable ring sleeve and the right movable ring sleeve. The two movable rings are arranged on the left side and the right side, the static ring is fixedly installed on the left side face of the left movable ring sleeve, the joint of the static ring and the left movable ring sleeve is fixedly sleeved with the sealing sleeve, and the shaft sleeve is fixedly installed on the right side face of the right movable ring sleeve. The static ring is tightly attached to the end face of the left movable ring and the end face of the right movable ring is tightly attached to the end face of the shaft sleeve under the action of fluid pressure and elasticity of the elastic sleeve, a main sealing face is formed, fluid leakage is prevented, the elastic sleeve and the connecting spring provide strong elastic compensation force, and abrasion, thermal expansion and other changes of the sealing faces can be automatically compensated; and tight attachment of the sealing surface is kept.

The utility model discloses a main valve structure of high pressure pneumatic cleaning device, including valve body, valve ball, left valve pipe spare, right valve pipe spare, the inside of valve body is provided with valve cavity, valve ball rotation is connected in the inside of valve cavity, the left side of valve body is fixedly connected with left valve pipe spare through flange spare, left valve pipe spare other end is connected with gas pressure system, be provided with pneumatic seal spare in left valve pipe spare, pneumatic seal spare and valve ball left side contact, the right side of valve body is fixedly connected with right valve pipe spare through flange spare, right valve pipe spare other end is connected with cleaning device, be provided with spring seal spare in right valve pipe spare, spring seal spare and valve ball right side contact. The utility model discloses a kind of main valve structures of reliable sealing, effectively improve service life and safety.