| 摘要 |
<p>The powder sprayer has at least one control unit (2) with a delivery air outlet (14) where an air pipe (12) can be connected with an injector pump(6) in order to deliver powder pneumatically to a nozzle (8). A first air path (94) leads to the air outlet with a valve adjusted manually to change the pressure or rate of flow. A second air path (98) also goes to the air outlet with a valve(78) adjusted automatically. A changeover valve lies between a compressed air pipe (86) and the two air paths, so that compressed air can be applied to either path. An air outlet (32) with a pipe (30) allows additional air to go to the injector pump.</p> |
