Bag filter Common faults and troubleshooting methods
1. Corrosion, leaks, or external damage to the air duct. Loose bolts, welding cracks, and dust accumulation in any part (mainly in flat pipes and variable diameters).
2. The pressure reducing valve is leaking air, and there are impurities inside the pressure reducing valve
3. The fan should be installed firmly and horizontally, and oil should be added regularly to prevent dust from accumulating on the blades.
4. Whether the compressor is properly lubricated. Whether there are cracks on the air bag and pipeline; Pay attention to the pressure indication of the pressure regulating valve. Check if the air compressor and air bag have been drained.
5. The maintenance door should be tightly sealed. Check if the sealing strip is loose, broken, or worn. Replace as needed.
6. Check for excessive wear or corrosion on the guide plate.
Determine whether the fan is suitable for the working conditions; Wheel blade dust accumulation: Clean the wheel blade dust and check if the fan is handling excessive dust. Check the installation position of the fan/drain any condensed water or moisture/keep the fan dry. Dust collector lift valve closed: Check the air path and open the valve plate. The fan is not operating within the design requirements: check the fan structure to ensure smooth airflow. Clean the blades and check if the fan is handling excessive dust.
7. The main reason for the damage of dust collector bag
We conducted laboratory tests on the bag samples, and the results showed that the air permeability, burst strength, and fracture strength of all parts except for the damaged area were within the range of use. At the same time, it was found that almost all the damaged parts of the dust removal bag were located 20-40cm away from the bag opening, and the damage started from internal wear. The main cause should be related to the blowback system. One is that the nozzle of the blowback system is not aligned, causing the blowback to deviate; On the other hand, the pressure of the compressed air blown back is too high.
Solution measures
8. The renovation of the injection system is costly and time-consuming, and cannot be completed within the normal maintenance period. After research, it was decided to add a protective sheath inside the cloth bag. This method is simple and easy to operate, and the cost is relatively low. During the 2008 Spring Festival maintenance, ordinary white iron sheet protective covers were installed on warehouses with more damage and cloth bags with records of damage.
9. The pressure of the compressed air blown back should be controlled between 0.25 and 0.35 MPa to remove the dust on the bag. If the pressure is too high, it will affect the service life of the bag. Adjustments can be made by observing changes in the pressure difference between the inlet and outlet of the dust collector to keep the pressure difference within the required control range (design pressure difference<1700Pa) Adjust the blowing program and adjust the blowing pulse width from 150ms to 250ms to reduce the blowing force and minimize the wear of the bag.
2、 The lift valve tripped and stopped due to insufficient compressed air
There are two main reasons
10. The main reason for the damage of dust collector bag
We conducted laboratory tests on the bag samples, and the results showed that the air permeability, burst strength, and fracture strength of all parts except for the damaged area were within the range of use. At the same time, it was found that almost all the damaged parts of the dust removal bag were located 20-40cm away from the bag opening, and the damage started from internal wear. The main cause should be related to the blowback system. One is that the nozzle of the blowback system is not aligned, causing the blowback to deviate; On the other hand, the pressure of the compressed air blown back is too high.
Solution measures
11. The renovation of the injection system is costly and time-consuming, and cannot be completed within the normal maintenance period. After research, it was decided to add a protective sheath inside the cloth bag. This method is simple and easy to operate, and the cost is relatively low. During the 2008 Spring Festival maintenance, ordinary white iron sheet protective covers were installed on warehouses with more damage and cloth bags with records of damage.
12. The pressure of the compressed air blown back should be controlled between 0.25 and 0.35 MPa to remove the dust on the bag. If the pressure is too high, it will affect the service life of the bag. Adjustments can be made by observing changes in the pressure difference between the inlet and outlet of the dust collector to keep the pressure difference within the required control range (design pressure difference<1700Pa) Adjust the blowing program and adjust the blowing pulse width from 150ms to 250ms to reduce the blowing force and minimize the wear of the bag.
2、 The lift valve tripped and stopped due to insufficient compressed air
There are two main reasons
13. The oil-water separator between the air storage tank and the lift valve is clogged due to dirty compressed air causing the filter element to become clogged;
After prolonged operation of the lift valve, the sealing components wear out, causing compressed air leakage and insufficient gas supply.
Solution measures
15. Add a set of oil-water separators, one in operation and one as backup. When the filter element is found to be dirty, it can be replaced with another set to clean the dirty one;
16. In addition to timely replacing the sealing components of the lift valve, the following measures should also be taken: adjust the supply pressure of the lift valve between 0.25 and 0.5 MPa, and each lift valve should be able to operate within the specified time. The pressure should not be too high, otherwise it may cause aging of the cylinder sealing components. When the leakage point increases, the supply pressure can be appropriately increased; The oil-water separator supplies oil, and the oil supply speed cannot be too low to avoid oil loss. Additionally, add lubricating grease to the valve stem of the lifting cylinder.
The dust collector can operate under negative or positive pressure without any changes to its body structure, with a dust collection efficiency of over 99.8% and a purified gas dust concentration of less than 100mg/m3. If this series of dust collectors is used in cold regions or when the flue gas is below zero, insulation and heating devices need to be added, and the shell should also be subjected to phase strain. The dust collector consists of a chain drive device and a switching pulsation valve. It uses a high-pressure fan to blow back and clean the dust, which is not limited by the gas source conditions. It uses resistance to automatically control the back blowing and clean the dust, saving energy and extending the use of dust removal filter bags. It can be installed indoors in cold regions and can be installed outdoors in other regions. It can be widely used in many departments such as machinery, casting, mining, smelting, building materials, and grain chemical industry.
Dust collector is a relatively economical and practical product, which is widely used and promoted by users for its characteristics of dust collection, energy conservation and electricity saving. In the fiercely competitive market today, product performance, quality and service are the foundation of competition. Therefore, in these aspects, Zhongxin Dust Collector has achieved perfection. In this regard, our continuous persistence has won the trust of our customers.
1、 The main reason for the damage of dust collector bag
We conducted laboratory tests on the bag samples, and the results showed that the air permeability, burst strength, and fracture strength of all parts except for the damaged area were within the range of use. At the same time, it was found that almost all the damaged parts of the dust removal bag were located 20-40cm away from the bag opening, and the damage started from internal wear. The main cause should be related to the blowback system. One is that the nozzle of the blowback system is not aligned, causing the blowback to deviate; On the other hand, the pressure of the compressed air blown back is too high.
Solution measures
17. The renovation of the injection system is costly and time-consuming, and cannot be completed within the normal maintenance period. After research, it was decided to add a protective sheath inside the cloth bag. This method is simple and easy to operate, and the cost is relatively low. During the 2008 Spring Festival maintenance, ordinary white iron sheet protective covers were installed on warehouses with more damage and cloth bags with records of damage.
18. The pressure of the compressed air blown back should be controlled between 0.25 and 0.35 MPa to remove the dust on the bag. If the pressure is too high, it will affect the service life of the bag. Adjustments can be made by observing changes in the pressure difference between the inlet and outlet of the dust collector to keep the pressure difference within the required control range (design pressure difference<1700Pa) Adjust the blowing program and adjust the blowing pulse width from 150ms to 250ms to reduce the blowing force and minimize the wear of the bag.
2、 The lift valve tripped and stopped due to insufficient compressed air
There are two main reasons
19. The oil-water separator between the air storage tank and the lift valve is clogged due to dirty compressed air causing the filter element to become clogged;
After prolonged operation of the lift valve, the sealing components wear out, causing compressed air leakage and insufficient gas supply.
Solution measures
21. Add a set of oil-water separators, one in operation and one as backup. When the filter element is found to be dirty, it can be replaced with another set to clean the dirty one;
22. In addition to timely replacing the sealing components of the lift valve, the following measures should also be taken: adjust the supply pressure of the lift valve between 0.25 and 0.5 MPa, and each lift valve should be able to operate within the specified time. The pressure should not be too high, otherwise it may cause aging of the cylinder sealing components. When the leakage point increases, the supply pressure can be appropriately increased; The oil-water separator supplies oil, and the oil supply speed cannot be too low to avoid oil loss. Additionally, add lubricating grease to the valve stem of the lifting cylinder.
The dust collector can operate under negative or positive pressure without any changes to its body structure, with a dust collection efficiency of over 99.8% and a purified gas dust concentration of less than 100mg/m3. If this series of dust collectors is used in cold regions or when the flue gas is below zero, insulation and heating devices need to be added, and the shell should also be subjected to phase strain. The dust collector consists of a chain drive device and a switching pulsation valve. It uses a high-pressure fan to blow back and clean the dust, which is not limited by the gas source conditions. It uses resistance to automatically control the back blowing and clean the dust, saving energy and extending the use of dust removal filter bags. It can be installed indoors in cold regions and can be installed outdoors in other regions. It can be widely used in many departments such as machinery, casting, mining, smelting, building materials, and grain chemical industry.
Dust collector is a relatively economical and practical product, which is widely used and promoted by users for its characteristics of dust collection, energy conservation and electricity saving. In the fiercely competitive market today, product performance, quality and service are the foundation of competition. Therefore, in these aspects, Zhongxin Dust Collector has achieved perfection. In this regard, our continuous persistence has won the trust of our customers.
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