Title:
PARENT AND CHILD SYSTEM BUTTERFLY TYPE NON-RETURN VALVE
Document Type and Number:
Japanese Patent JPS60151473
Kind Code:
A
Abstract:
PURPOSE:To prevent shock upon flowing reversely by a method wherein a child valve body, arranged slidably along the back surface of a parent valve, is connected to a valve shaft through a crank mechanism. CONSTITUTION:When the flow in a valve box becomes reverse, the parent valve body 5 is swung by the pressure of the reverse flow at first and beings to close a flow path. While the parent valve body 5 moves from the fully opened position to the fully closed position, the child valve body 11 slides relatively to the direction to open a communicating hole 10 under being guided by a guide member 13 through the crank mechanism. Thereafter, the valve shaft 4 is rotated gradually by the force of a weight 37, therefore, the child valve body 11 slides to the direction to close the communicating hole 10. When the communicating hole 10 is closed by the child valve body 11, the pressure of reverse flow acts on the child valve body and the child valve body closes the communicating hole 10 slowly.
Inventors:
MARUI YOSHIHIRO
WADA TADASHI
AKIYAMA MORIO
YAMADA SHINJI
KASANAMI YUKIO
IRIE HIROSHI
WADA TADASHI
AKIYAMA MORIO
YAMADA SHINJI
KASANAMI YUKIO
IRIE HIROSHI
Application Number:
JP659384A
Publication Date:
August 09, 1985
Filing Date:
January 18, 1984
Export Citation:
Assignee:
KURIMOTO LTD
International Classes:
F16K15/03; (IPC1-7): F16K15/03
Domestic Patent References:
| JPS5749416A | 1982-03-23 |
Attorney, Agent or Firm:
Morio Sada