| 摘要 |
<p>The present invention relates to a main control valve which opens and closes an input and output port and an exhaust and back pressure port by being connected to a double-acting reciprocating pressure booster, and to an automatic reciprocating control device for the double-acting reciprocating pressure booster, which is equipped with a latch valve for operating the spool of a main control valve. The main control valve comprises a first valve body which is equipped with two connection ports connected to the first input and output port and the second input and output port; two connection ports connected to the first exhaust and back pressure port and the second exhaust and back pressure port; a second valve body integrally formed with the first valve body; a first spool which is operated inside the first valve body; and a second spool which is operated in the second valve body and is integrally formed with the first spool. The latch valve is equipped with an input port connected to a fluid supply source; a latch valve body, which has a pressure port for applying pilot pressure by being connected to the first valve body or the second valve body; a latch valve spool operated in the latch valve body; and a valve manipulation connection rod connected to the latch valve spool. The automatic reciprocating control device for the double-acting reciprocating pressure booster facilitates assembly work and installation of the double-acting reciprocating pressure booster by simplifying a control structure and a control passage. Also, the automatic reciprocating control device increases the reliability of the direction change of the booster and the work for maintaining the position of a control valve and decreases surge pressure. Also, the device can perform the automatic reciprocating motion of the booster by the self power of the same without an external sensor or an additional device.</p> |
