| 摘要 |
The invention relates to a central dust suction plant, which is provided with water wash and double rinse. This plant is characterized in that it comprises water washing members, which are constituted by a water intake at the lower end 5 of a chamber 7 via a pipe 25, which is connected to a pressurized water source 20 and in which an electric valve 26 and a needle valve 27 controlled by a float 28 have been arranged, which float is disposed in the chamber at the top of a water reservoir 13, and in that the chamber additionally is provided with a double rinse system, which comprises, firstly, an annular spray nozzle 31 facing towards the said water reservoir and secondly a spray nozzle 32 for dampening a dust filter 35 which has been arranged between the central dust suction unit 3,4 and the said annular spray nozzle 31, the annular nozzle and the dampening nozzle being connected to the said pressurized water source via a pipe 29 provided with an electric valve 30. This has application in centralized dust suction cleaning. <IMAGE>
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