| 摘要 |
<p>The invention relates to a regeneration valve assembly for construction machineries, comprising a valve body having a valve column movably disposed, a first port and a second port formed thereon, wherein the first port is in communication with a first cavity, and in optional communication with one side of the supply oil path according to the position of the valve column, the second port is in communication with the second cavity, and in optional communication with the other side of the supply oil path according to the position of the valve column, having an oil tank passage below the valve column, and a supply oil path above the valve column; a regeneration oil path formed on the valve body and positioned on the valve body, and in communication with the other side of the supply oil path; a pore oil pathway formed in the valve body in order to communicate the regeneration oil path with the oil tank passage. When the position of the valve column is transformed to the position to communicate the first port with the supply oil path, the second port is in communication with the regeneration oil path, the oil flowing through the valve body is supplied to the first port through a regeneration oil path and a supply oil path, a part of the oil flowing into the regeneration oil path is discharged into the oil tank passage through the pore oil path.</p> |
