| 摘要 |
<p>PURPOSE:To securely prevent freezing of the inside of an air motor by constituting the device so that a part of compressed air as the driving air of a reciprocating air motor is fed to a compressed-air changeover valve and to exhaust passages as hot air. CONSTITUTION:A reciprocating air motor 1 for driving a reciprocating plunger pump 5 for-forcibly-feeding use is driven by compressed air A which has been introduced into a joint 2 and supplied respective joints 4 via an air hose 3, and exhaust air E2, E4 is discharged from exhaust parts 9 at two places to the outside of the air motor 1 via exhaust exclusive conduits 10. In this case, an air valve 13 for splitting the compressed air from the joint 2 is provided, and the split compressed air is discharged to the exhaust ports 20 of the valve plate 15 of the air motor 1 as hot air HA via air tubes 14. In other words, the air tubes 14 are inserted into the exhaust passages 31 of a manifold 18, and to these exhaust passages 31, right and left exhaust exclusive passage pipes 36 air provided, and thereto the exhaust exclusive conduits 10 are connected.</p> |
