| 摘要 |
The present invention relates to an opening/closing valve and, more particularly, to an opening/closing valve mounted between moving fluid movement tubes, thereby controlling the flow of the moving fluid. The opening/closing valve according to the present invention comprises: a valve body having an opening/closing port formed in the forward/backward direction and having an opening/closing space formed therein in a direction perpendicular to the opening/closing port; and an opening/closing member mounted in the opening/closing space, thereby opening/closing the opening/closing port by means of a driving source, wherein, a first contact surface, which is formed on the upper end of the opening/closing space, a second contact surface, which is formed on the lower portion of the opening/closing port at a level different from that of the first contact surface so as not to overlap with the first contact surface, and a third contact surface, which is formed so as to interconnect both ends of the first and second contact surfaces formed on both sides of the left and right of the opening/closing port at different levels, are formed on the valve body; the opening/closing member comprises a main opening/closing plate and an auxiliary opening/closing plate, the main opening/closing plate having a first opening/closing surface formed on the upper end thereof in a shape corresponding to that of the first contact surface, thereby selectively contacting the first contact surface, having a (2a)th opening/closing surface, which is a part of a second opening/closing surface formed on the lower portion of the first opening/closing surface in a shape corresponding to that of the second contact surface at a level different from that of the first opening/closing surface so as not to overlap with the first opening/closing surface, thereby selectively contacting the second contact surface, and having a third opening/closing surface interconnecting both ends of the first and second opening/closing surfaces, thereby selectively contacting the third contact surface, and the auxiliary opening/closing plate being mounted so as to be separable with regard to the main opening/closing plate, a (2b)th opening/closing surface, which is the remaining part of the second opening/closing surface, being formed on the auxiliary opening/closing plate; the first opening/closing surface, the second opening/closing surface, and the third opening/closing surface have coupling grooves formed thereon, respectively, into which closed sealing members are inserted and coupled; and the coupling groove, which is formed on the second opening/closing surface, has a part, on the section, formed on the main opening/closing plate and the remaining part formed on the auxiliary opening/closing plate such that both parts form a complete shape when the main opening/closing plate and the auxiliary opening/closing plate are coupled. |
