| 摘要 |
FIELD: machine building. ^ SUBSTANCE: gas-distributing valve includes body with one inlet and two outlet connection pipes, and dampers kinematically connected to the shaft. Shaft axis is located perpendicular to axes of flow ports of outlet connection pipes. Dampers are made in the form of a part of hollow rotation body in the form of a sector with flow ports and installed with radial gap in relation to the shaft and adjacent to outlet connection pipes along mutually facing equal rotation surfaces with common centre on the shaft axis. Annular bosses not covering the flow ports of inlet and outlet connection pipes, which are located in one plane, are made on the shaft perpendicular to its axis. Limit stops of dampers are made on side surfaces of dampers throughout the length in their rotation plane in the form of a part of hollow cylinder in the form of a sector. Through slots are made in limit stops of dampers. On annular bosses of the shaft there made are projections which enter through slots of cylindrical limit stops of dampers and contact the side walls of slots along cylindrical surfaces. ^ EFFECT: decrease of hinge moment value of valve drive shaft. ^ 3 cl, 8 dwg |
