| 摘要 |
<p>An overflow blocking apparatus for a tank lorry is disclosed. According to the present invention, the overflow blocking apparatus for a tank lorry is mounted on a top plate of a storage tank to discharge internal oil mist. The overflow blocking apparatus includes: a body attached to the top plate, having an air supply port formed on one side, having an air discharge port formed on the other side, having a valve seat where a disk is seated, and coupled to a rod which is lifted with respect to the valve seat; a housing coupled to the top of the body, having one side wall connected to an oil mist discharge pipe, and having a working hole formed in an upper surface, wherein a disk shaft is coupled to the center of the working hole; the disk connected to a lower part of the disk shaft which is coupled to the working hole of the housing; a cylinder cap coupled to the top of the housing; a piston coupled to an inner circumferential surface of the cylinder cap to be lifted; and an automatic blocking device raised by the buoyancy to generate an alarm signal and stop an oil supply pump.</p> |
