| abstract |
The utility model discloses a flue gas multistage filtering and sampling device, which comprises a flue, a sampling tube and a filter element; a first fly ash collecting funnel is fixedly communicated with the side wall of the sampling tube at the air inlet of the filter element, and an electromagnetic valve is arranged at a discharge port at the bottom of the first fly ash collecting funnel; a first fly ash baffle is vertically fixed on the inner wall of the sampling pipe between the first fly ash collecting hopper and the filter element; a first flue gas channel is arranged between the upper edge of the first fly ash baffle and the inner wall of the sampling tube; a second fly ash baffle is vertically fixed on the inner wall of the sampling pipe above the first fly ash collecting hopper; a second flue gas channel is arranged between the lower edge of the second fly ash baffle plate and the first fly ash collecting hopper. The utility model has the advantages of, the utility model discloses simple structure easily realizes, has guaranteed that the filter core can long-term operation not stifled grey, has increased the operating duration of filter core, has reduced the maintenance volume of system, and then has reduced the running cost, has improved the monitoring efficiency of follow-up system. |