| 摘要 |
A direct-flow valve has seat (1) with opening (2) for passage of liquid, springy shutoff element (3) arranged as plate in round form with one end rigidly fixed on seat (1), and restrictor (4) of lift of shutoff element (3). Arc-like spring (6) is with one end rigidly fixed in lift restrictor (4). Working surfaces of lift restrictor (4) and seat (1) ate arranged as cycloid. The end of arc-like spring (6) is rigidly fixed on the side surface of the slot (5) provided in the lift restrictor (4). Surface of the slot (5) turned to the spring (6) is made flat. At operation of calve increase of volumetric efficiency is provided, and dynamical load is decreased. The valve can be used in pump-building, in particular in volumetric drill pumps with valve distribution. |
