| 摘要 |
<p>A piston pump or compressor having a pump cylinder (2) and a cylinder head (7) with suction valve (8) and exhaust valve (10) is arranged and oriented in such a manner that the pump cylinder (2) has its cylinder 'head' (7) turned downwardly, this head thus forming the bottom of the cylinder (2). The exhaust valve (10) is placed such that it communicates with the lowermost cylinder space portion, whereby any collection of liquid in the cylinder (2) will be forced out already by an initial downstroke of the piston, without any impact on the pump at the end of the downward working stroke. The pump is also well suited for handling pure liquid and gaseous liquid, and on that background a highly simplified suction emptying for LPG gas cylinders is disclosed.</p> |
