| 摘要 |
An arrangement designed for mechanized spray coating of the walls in a cavity by spraying a mixture of spray material in liquid form and air, comprising one or more spray nozzles 10 arranged to be inserted into the cavity to be treated. Each of the spray nozzles 10 is connected to a spray material feed line 13, and to a compressed-air delivery line 19 in which there are flow-sensing devices 25,26, one for each nozzle 10, which send a signal when a certain flow level is not attained during spraying, thus indicating a reduced discharge capacity of the nozzle 10. <IMAGE> |
