Movable air charging and discharging sealing device

• Main Authors: DING JIE, YE YUXING, LI PENGCHENG, HUANG KEHUI, DENG WEI, PEI ZHIGANG, CHEN XIAOYAN
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2017
• Subjects: PERFORMING OPERATIONS; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; TRANSPORTING; WORKING CEMENT, CLAY, OR STONE

The invention discloses a movable air charging and discharging sealing device. The movable air charging and discharging sealing device comprises a seal washer, a valve core, an inner cylinder, an outer cylinder and bottom rubber, wherein the lower part of the valve core is connected to the upper part of the inner cylinder, and the lower part of the inner cylinder is connected with the bottom rubber; the inner cylinder is arranged in the outer cylinder in a sleeved manner and can slide up and down in the outer cylinder, and the sliding part is free from air leakage; and an end cap at the upper part of the valve core, the inner upper part of the outer cylinder and the inner cylinder form a closed air cavity. The movable air charging and discharging sealing device is mounted at the bottoms of the inner side and the outer side of a movable concrete pouring cavity. Air charging and discharging are performed on the sealing device to form positive pressure and negative pressure in the sealing device, the inner cylin