What is the function of the dedusting device of the pulse precipitator?

What is the function of the dedusting device of the pulse precipitator?

With the extension of the filter time, the dust layer on the filter bag keeps thickening, and the resistance of the dedusting equipment keeps rising. When the resistance of the equipment rises to the set value, the dedusting device begins to carry out dedusting. First, a chamber lift valve closed, will be truncated filtering flow, and then the electromagnetic pulse valve open, compressed air to the case on a very short time in the rapidly expanding, into filter bag, filter bag expansion deformation produces vibration, and under the action of reverse flow scouring, attached to the filter bag dust on the surface of the appearance, stripped fell into the hopper. After the cleaning, the electromagnetic pulse valve is closed, the lifting valve is opened, and the chamber reverts to the filtering state. Each room is cleaned in turn, starting from one room to the next cleaning cycle. After filtering and ash removal, the trapped dust falls into the dust hopper and is discharged by the dust discharging device at the head of the dust hopper.

In order to ensure the daily operation of the pulsed bag filter can be normal and smooth, it is necessary to check the single component of the system, then do the adaptive operation, and do part of the performance test to ensure the stability and superiority of its performance. It is necessary to carefully check the installation of the filter bag, and pay attention to whether there is bag loss, wear, loosening, etc. If yes, timely measures should be taken to strictly adjust the ash removal cycle and time. If the soot cleaning time is too long, will make the attachment to fall dust layer is clear, causing leakage of filter bag and if damaged ‍ soot cleaning time is too short, the accumulation of dust on the filter bag, make filter resistance value increases, affect the soot cleaning effect. Pay attention to whether the bag room condensation exists to ensure that the ash removal system is comfortable. To prevent blockage and corrosion, always pay attention to the fan rotation direction, speed, bearing vibration and temperature. Check whether the joint is tight or not. If it is loose, tighten it immediately. Check whether the pneumatic components are reliable.

For the access door part with the top hole, one end of the clamping device is pressed by the mechanism, and the other end is pressed by the handle. The bolts and nuts are adjusted respectively to make the rubber seal can be pressed on the door frame after closing, and there is no sticking phenomenon when opening, and the bolts are locked. Adjust the lifting valve part. The valve cylinder is buffered. It is required that when the valve is closed to the closed position, the cylinder should enter the buffer zone. Otherwise, nuts on both sides of the valve plate should be adjusted. The movement of the cylinder speed can be adjusted through the throttle at the ends of the cylinder bolts, lift valve closing time is not more than 2 ‌, ‌ 1, when opening, can appropriate slowly. Then check the clearance after the valve plate is closed, no more than 0.8. If the hole deformation of the valve plate after the site welding should be leveled, the easier way is to put the valve plate on the valve plate hole, find out the clearance of the big part with a tool to level. The above adjustments shall be connected to the compressed air source, whose pressure can be adjusted through the pressure relief valve on the air source triplet (generally 0.3MP).