Dust collector filter bags dust cleaning
All maintenance related to the filter bags can be carried out in the clean gas chamber. The top cover of the top dust collector bag house is used for inspection and replacement of filter bags. The dust collector has a maintenance platform for checking and maintaining the ash removal system, electrical control equipment and valves.
Filter bag dust cleaning:
1, Off-line pulse jet dust cleaning of long bag low press type dust collector bag house adopts manual and automatic two ways, and can be converted to each other. The automatic control adopts two kinds of control modes of pressure difference (constant resistance) and timing, which can be converted to each other. The pressure difference detection points are set at the inlet and outlet of the deduster respectively. When the set pressure difference (1500-1700Pa) is reached, the dust remover is in turn pulsing and blowing ash.The implementation of the cleaning procedure is directly controlled by the main cabinet (PLC low voltage cabinet).
2, Timing control: select the switch to select "automatic" "timing" position; when the system meets the timing control conditions, close the 1# room lifting valve first, the 1# room ash indicator light is bright, the injection is started, open the 1# lifting valve after the injection end, the 1# room starts to work; close the 2# room lifting valve about 20 seconds in the interval... (repeat 1# room work), Will enter next cycle finishing the cleaning work of all warehous rooms, after previous cycle ends, the ash removal process will start from the 1# room.
3, Fixed resistance control: select the switch to select "automatic" "fixed resistance" position, when the differential pressure of the dust collector reached the set value, start the cleaning process: first close the 1# room lifting valve, 1# room ash indicator light, start blowing, open 1# lifting valve after the end of injection, 1# room start work; interval about 20 seconds to close the 2# room lift valve... (repeat 1# room work), and finish the cleaning work of all warehous rooms in turn. If the dust removal resistance after a dust removal is still higher than the set value, the ash will continue. If the resistance of the dust collector is reduced to below the set value in the process of dust cleaning, the cleaning process stops after a period of completion, and the cleaning process begins again until the resistance of the dust collector exceeds the set value.
4. The dust removal process of the duster can be operated by the operator at the scene.
The bypass of the dust collector bag house: In the normal operation of the boiler, unusual thing possibly occur, one of which can cause the filter bag damage is the high temperature. When the temperature of the smoke is higher than 180, the bypass control valve should be opened. Under unfavorable conditions, the filter bag material will be permanently damaged, so the automatic chain device of the bypass control valve must be installed. It must be careful in order to prevent the filter bag from being damaged.