The solution to the fault of cloth bag dust collector

In the process of dust removal system operation, users pay more attention to the service life and work efficiency of dust collector, but usually neglect the safety of dust collector bag and daily maintenance. Do a good job of daily maintenance, timely troubleshooting, dust removal equipment can work more stable and efficient. The following is the routine parts of the bag dust collector that need to be checked and the common faults and troubleshooting methods.

Common faults and troubleshooting methods of cloth bag dust collector:

High pressure difference of precipitator

Main reasons and elimination methods:

Differential pressure reading error: Clean the pressure gauge interface/check the gas pipe for cracks/check the differential pressure gauge.

Incorrect injection system setting: increased injection frequency/compressed air pressure is too low; Increase pressure/check dryer, clean (if necessary)/check line for blockage.

Injection valve failure: Check diaphragm valve/check control solenoid valve.

Pulse controller failure: Check whether the controller indicates each contact/check the output of each terminal.

Bag clogging: condensation on the bag; Send the filter bag to the laboratory for cause analysis. Filter bag drying and cleaning treatment/or replace/reduce the air volume/increase the compressed air pressure/increase the frequency of cleaning/spray into the neutral powder, forming a protective layer and porous primary cake.

Excessive secondary dust: continuously empty ash hopper/filter bag/filter cylinder dust removal in random sequence, rather than sequential cleaning. Check inlet damper to make sure it is clean.

Excessive air volume

Main reasons and elimination methods:

Pipe leakage: caulk cracks.

Insufficient static pressure: Close the air valve. Reduce the fan speed.

Chimney ash

Main reasons and elimination methods:

Filter bag leakage: Replace if the filter bag is torn or has small holes. Check spring ring installation to ensure tight.

Flower plate leakage: interstitial or weld.

No enough dust cake: reduce the pressure of compressed air; Reduce cleaning frequency/spray neutral powder to produce primary dust cake.

Excessive air holes in the bag or cartridge: Test the bag or cartridge for penetration and consult the manufacturer.

Severe fan vibration

Main reasons and elimination methods:

Wheel blade ash: wheel blade ash, check whether the fan handle excessive dust. Check the fan installation position/drain condensate or moisture/keep the fan dry.

Fan impeller not suitable for working conditions: consult the manufacturer.

Belt wheel uneven: belt rotation power balance.

Bearing wear: replace.

The compressed air pressure is low

Main reasons and elimination methods:

Excessive compressed air consumption: see above.

Endotracheal resistance: Check whether the trachea is blocked.

Dryer blocked: Replace desiccant or dryer bypass if the working condition permits.

Compressor wear: Consult the manufacturer or check the compressor maintenance manual.

Filter bag decomposition

Main reasons and elimination methods:

Filter material is not suitable for this condition: Analyze gas chemical properties and consult the filter bag or cartridge manufacturer.

Filter material is not suitable for gas composition: gas is treated before entering the dust collector; Or replace the filter bag or cartridge.

Run at dew point temperature: Increase gas temperature.

Excessive wear of filter bag

Main reasons and elimination methods:

If the equalizing baffle is worn out, replace the equalizing baffle.

Excessive dust: Install a primary dust collector.

Overfrequency of cleaning cycle: prolong cycle time.

The inlet air is not properly equalized by the filter bag or cartridge: consult the manufacturer.

Dust in the clean air room/flower board: clean the flower board and filter bag or cylinder inside; A fluorescence test was performed to find the leak.

Burr/corrosion on cage frame (if used) : Remove smooth burr; Replace if necessary. If corroded, consider using cage racks with corrosion resistant coatings.

Excessive emission concentration

Main reasons and elimination methods:

Causes:

Filter bag damage: repair and replace the filter bag. Keep a certain distance between the outside diameter of the bag cage and the inside diameter of the filter bag.

Dust leakage phenomenon: find the cause, treatment, reduce the filter wind speed.

Spray time is too long or frequent cleaning: reduce the spray time and increase the cleaning period.

The cleaning force is too large, resulting in two dust: reduce the cleaning force.

Some air bag structure design is not reasonable, in the pulse valve installation of air leakage site: appropriate to increase the box and increase the ash bucket, to ensure that the ash bucket inclination Angle is not less than 60 degrees, for the smoke humidity is large, dust is sticky, installed in the dust hopper vibrator, can prevent ash bucket ash, especially for the wet weather in the south.