What should be done for the daily maintenance of the bag filter

A dust collection hood is set up in each ash place, and the dust-containing gas is transported to the dust removal device through the pipeline gas path, in which the dust is collected in the dust removal device after the gas-solid separation is carried out, and the clean gas is introduced into the main pipe or directly discharged into the whole set of equipment into the atmosphere, that is, the dust removal system, and the dust collector is an important part of the system. From the perspective of ventilation and dust removal, dust is all solid small particles that can float in the air for a long time, and is a dispersion system, called aerosol, in which air is the dispersed medium and solid particles are the dispersed phase. A dust collector is a device that separates these small solid particles from aerosols.

Whether the bag filter can maintain long-term efficient and stable operation, daily maintenance and maintenance are crucial. The daily maintenance of the bag filter needs to do the following:

1) The operator should be familiar with the principle, performance, and use conditions of the bag filter, and master the adjustment and maintenance methods.

2) Reducer, ash conveying device and other mechanical moving parts should be oiled and changed according to the regulations, and abnormal phenomena should be eliminated in time.

3) The oil-water separator in the gas storage tank and gas source triplet should be discharged once per shift, and the oil-water separator should be cleaned every 3 6 months, and the oil fogger should be checked frequently for oil storage and refueled in time.

4) If the electromagnetic pulse valve fails, it should be eliminated in time, if there are impurities and moisture inside, it should be cleaned up, and if the diaphragm is damaged, it should be replaced in time.

5) When the bag filter is working normally, the ash discharge device cannot stop working, otherwise, the ash hopper will soon be filled with dust and overflow into the bag room, forcing the bag filter to stop working.

6) When using the timed cleaning controller, the cleaning cycle should be measured regularly to see if it is accurate, otherwise it should be adjusted. When using a constant-resistance pulse controller, the working condition of the pressure switch should be checked regularly, whether the pressure port is blocked, and cleaned.

7) When the machine is turned on, the compressed air should be connected to the air storage tank first, the control power supply should be turned on, and the ash discharge device should be started, and if there are other equipment in the system, the downstream equipment should be started first.

8) When stopping, after the process system is stopped, the bag filter and exhaust fan should be kept to continue to work for a period of time to remove the moisture and dust in the dust equipment, it must be noted that when the bag filter stops working, the bag filter must be repeatedly cleaned (manual cleaning can be used), and the dust on the dust filter bag should be removed to prevent the bag from being affected by moisture.

9) When stopping, it is not necessary to cut off the compressed air source, especially when the fan is working, compressed air must be provided to the poppet valve cylinder to ensure that the poppet valve is open.

10) Regularly measure the process parameters of the bag filter, such as flue gas volume, temperature, concentration, etc., and find the cause and deal with it in time if any abnormalities are found.

Here are recommendations for routine maintenance of your baghouse:

Regular cleaning: Clean the filter bags regularly to avoid dust accumulation. It can be cleaned with compressed air purging or water rinsing.

Check tightness: Check that all interfaces and seals are tight and intact to ensure proper system operation.

Observe the pressure difference: monitor the pressure difference at the outlet of the fan, and replace the filter bag in time to restore the working efficiency of the system.

Check the meter: Regularly check the meter to ensure the accuracy and reliability of equipment such as sensors, meters, and controllers.

Ensure ventilation: Keep the area around the bag filter well ventilated to prevent dust from accumulating indoors.

Maintenance of the bag filter can not only make the bag filter run better, but also extend its service life and maximize benefits, but many companies that fail are mostly because they do not know much about the daily maintenance of the bag filter, or they do not understand it thoroughly, resulting in improper maintenance, which damages the bag filter and affects production efficiency. So, how to carry out daily maintenance of the bag filter?

First of all, it is necessary to check the control valve and timer, pulse valve, etc., if the pulse valve fails, it will lead to the weakening of the ash cleaning effect, and if the support frame is not smooth enough, it may wear the filter bag, thereby reducing its service life, so it is necessary to ask the staff to regularly remove oil and water droplets, and often clean the separator, so as to prevent the bag filter from malfunctioning and the filter bag from clogging.

Secondly, it is necessary to check the installation of the bag filter, whether it is within the specified range, after use, whether there is bag dropping, loosening and wear, if there is to be adjusted in time, and the basis for judgment is very simple, only according to the emission of the chimney.

After the last absolute, to prevent condensation, the condensation of the bag filter will have a great adverse impact on the production of the enterprise, especially when used under negative pressure. To prevent condensation, it is necessary to maintain a balance between the bag filter and the temperature, so as to prevent the dust from sticking to the filter bag due to moisture, which can clog the fabric holes and cause ash cleaning failure.

Dust removal maintenance management precautions:

1. It is best to inspect the equipment once a day, and maintain the equipment according to the design requirements for the designated maintenance time. You need to pay attention to protection when maintaining.

2. The inside and outside of the box need to check the sealing and corrosion of the welds, bolts and other connecting parts, and the sealing of the internal pattern plate and cloth bag, some rubber, gasket, asbestos pad and other parts to prevent air leakage.

3. The maintenance of the airway valve, detect whether the shape of the valve is deformed or damaged, whether the switch is flexible and fast, whether the airtightness is good, and promote the operation of the cylinder of the valve.

4. Ash hopper, detect the ash hopper to accumulate dust, whether it is blocked by the ash discharge port, and whether there is scaling and block inside.

5. Cleaning structure, measuring whether the pressure difference is abnormal, and the working vertical limbs of solenoid valves and vibrating motors.

6. Filter bag, check whether the smoke exhaust is normal, whether there is damage or blockage, check the running resistance of the dust collector, and the change in resistance can reflect the operation of the bag.

In the operation of the bag filter, whenever the dust collector is temporarily out of use, the heating devices should continue to work normally.

The ball valve at the bottom of the bag cleaning system should be opened once per shift, and the beam should be cracked to release the condensate generated by the compressed air in the bag.

It is necessary to regularly check the operation of each pulse valve in the bag cleaning system, and if Duan Sun finds that there is no action, it should be dealt with quickly.

It is also necessary to regularly check the operation of the poppet valve of the bag filter.

The filter of the poppet valve valve manlet should be cleaned regularly, and clean oil should be added to the lubricator regularly.

Do a good job of daily air inspection and maintenance.

The daily maintenance of the bag filter requires maintenance of the following parts, regular replacement of dust bags, regular maintenance of fans, and regular maintenance of pulse valves.

Summary. 1.The air lock blanking device of the bag filter must ensure that the air lock is effective and the blanking is smooth, and the air lock is invalid, which causes the negative pressure to lose seriously in the ash return port, resulting in poor dust collection effect, and the material is not smooth to cause blockage, and the serious dust will crowd the inside of the bag dust collector, resulting in dust collection failure.

2.If there is air leakage, the diaphragm and the corresponding internal parts (such as: valve core, spring, throttle hole) should be replaced, if the pulse valve fails, the injection effect is poor, and the dust on the surface of the filter bag can not be removed, reducing the dust collection capacity.

3.Check the lifting cylinder of the bag filter to ensure that the lifting cylinder moves smoothly and in place, and ensure that the cylinder gland is tightened and not loosened, otherwise the gland will not be tightened and cannot be lifted; If the pressure is not tight, it will cause the spray to clean the ash, and if it cannot be lifted, the corresponding air chamber will not be able to collect the dust.

4.The inspection of the electromagnetic two-position five-way reversing valve ensures smooth work, no air leakage, and no dust inside, otherwise it will cause the failure of the lifting cylinder.

What are the maintenance and maintenance methods of bag filter?

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1.The air lock blanking device of the bag filter must ensure that the air lock is effective and the blanking is smooth, and the air lock is invalid, which causes the negative pressure to lose seriously in the ash return port, resulting in poor dust collection effect, and the material is not smooth to cause blockage, and the serious dust will crowd the inside of the bag dust collector, resulting in dust collection failure. 2.

If there is air leakage, the diaphragm and the corresponding internal parts (such as: valve core, spring, throttle hole) should be replaced, if the pulse valve fails, the injection effect is poor, and the dust on the surface of the filter bag can not be removed, reducing the dust collection capacity. 3.

Check the lifting cylinder of the bag filter to ensure that the lifting cylinder moves smoothly and in place, and ensure that the cylinder gland is tightened and not loosened, otherwise the gland will not be tightened and cannot be lifted; If the pressure is not tight, it will cause the spray to clean the ash, and if it cannot be lifted, the corresponding air chamber will not be able to collect the dust. 4.The inspection of the electromagnetic two-position five-way reversing valve ensures smooth work, no air leakage, and no dust inside, otherwise it will cause the failure of the lifting cylinder.