Although the paper frame primary filter is a disposable filtration consumable and its service life cannot be infinitely extended, through reasonable use and maintenance methods, its replacement cycle can be appropriately extended without affecting the filtration effect. The specific methods are as follows:
1. Optimize the usage environment and reduce the dust load
Control pollution sources
If the filter is used in industrial workshops, warehouses and other places, it is necessary to minimize the generation of dust in the area (such as enclosing the material transportation process and regularly sprinkling water on the ground to reduce dust), reduce the concentration of particulate matter in the air from the source, and relieve the filtration pressure of the filter.
Improve the ventilation path
For the air inlets of air conditioning or ventilation systems, try to avoid areas with dense dust (such as construction sites or beside main roads), and install them in relatively clean directions to reduce the initial dust content inhaled.
Second, adjust the system operation parameters reasonably
Control the wind speed and air volume
The filtration efficiency and dust-holding speed of the filter are closely related to the wind speed: when the wind speed is too high, dust is prone to penetrate the filter material or cause local wear of the filter material due to the impact of the airflow, and at the same time, the dust accumulation speed increases. Too low wind speed may affect the ventilation effect.
It is recommended to adjust the system air velocity according to the design parameters of the filter (such as the rated air volume) to keep it within the optimal operating range (generally, the recommended face air velocity for the primary filter is 1.0-1.5m/s), and avoid overloading operation.
Avoid frequent starts and stops
When the ventilation system is frequently started and stopped, the airflow impact may cause the accumulated dust on the filter material to fall off and fly again, which instead increases the burden on the filter. Try to keep the system running stably and minimize unnecessary starts and stops.
Iii. Regular cleaning and inspection, and timely handling of problems
Surface cleaning (for some types only)
For paper frame primary filters with coarse non-woven fabric or glass fiber as the filter material and a relatively solid structure, if there is a lot of dust on the surface but it is not clogged, compressed air can be used to gently blow from the back of the filter material under low pressure (be careful not to cause damage to the filter material due to excessive pressure), or a soft brush can be used to gently sweep the surface floating dust to remove the dust that can fall off the surface layer and temporarily restore some ventilation volume.
Note: This method can only be used for short-term emergencies and should not be used frequently; otherwise, it may damage the structure of the filter material or cause dust to enter the subsequent system.
Regularly check the resistance and appearance
Install a differential pressure gauge to monitor the resistance changes before and after the filter. When the resistance approaches 1.5 to 2 times the initial resistance, make preparations for replacement in advance to avoid filter material damage due to excessive resistance.
Regularly (such as once a week) visually inspect the appearance of the filter. If any problems such as damaged filter material, deformed paper frame, or poor sealing are found, it should be replaced immediately to prevent unfiltered air from directly penetrating.
Fourth, it is equipped with a simple pre-filter to share the filtration pressure
A simpler pre-filtering device (such as nylon mesh or metal mesh filters) should be added at the front end of the filter to first intercept hair and large particle impurities (such as insects and paper scraps), reducing the large particle pollutants entering the paper frame primary filter and indirectly extending its service life. This type of pre-filtering device is low-cost, easy to clean and can be reused repeatedly.
Precautions
The core filter material of the paper frame primary filter is paper or non-woven fabric, which is not washable by itself (water washing will cause the filter material to fail). Excessive cleaning will instead reduce the filtration efficiency and even damage the filter.
The prerequisite for extending the service life is not to affect the filtration effect and system safety. If the filter is obviously clogged, the resistance exceeds the standard or the filter material is damaged, it must be replaced in time. Otherwise, it may lead to insufficient ventilation volume, increased energy consumption, and even contaminate subsequent equipment (such as medium-efficiency filters, fans, etc.), which will instead increase maintenance costs.
الملخص
The service life of the paper frame primary filter can be extended to a certain extent by reducing the dust load, optimizing the operating parameters, conducting regular inspections and appropriate pretreatment, but the principle of “moderation” should be followed. In essence, it is still a disposable consumable. Reasonable replacement is the key to ensuring the efficient operation of the system.
1. Optimize the usage environment and reduce the dust load
Control pollution sources
If the filter is used in industrial workshops, warehouses and other places, it is necessary to minimize the generation of dust in the area (such as enclosing the material transportation process and regularly sprinkling water on the ground to reduce dust), reduce the concentration of particulate matter in the air from the source, and relieve the filtration pressure of the filter.
Improve the ventilation path
For the air inlets of air conditioning or ventilation systems, try to avoid areas with dense dust (such as construction sites or beside main roads), and install them in relatively clean directions to reduce the initial dust content inhaled.
Second, adjust the system operation parameters reasonably
Control the wind speed and air volume
The filtration efficiency and dust-holding speed of the filter are closely related to the wind speed: when the wind speed is too high, dust is prone to penetrate the filter material or cause local wear of the filter material due to the impact of the airflow, and at the same time, the dust accumulation speed increases. Too low wind speed may affect the ventilation effect.
It is recommended to adjust the system air velocity according to the design parameters of the filter (such as the rated air volume) to keep it within the optimal operating range (generally, the recommended face air velocity for the primary filter is 1.0-1.5m/s), and avoid overloading operation.
Avoid frequent starts and stops
When the ventilation system is frequently started and stopped, the airflow impact may cause the accumulated dust on the filter material to fall off and fly again, which instead increases the burden on the filter. Try to keep the system running stably and minimize unnecessary starts and stops.
Iii. Regular cleaning and inspection, and timely handling of problems
Surface cleaning (for some types only)
For paper frame primary filters with coarse non-woven fabric or glass fiber as the filter material and a relatively solid structure, if there is a lot of dust on the surface but it is not clogged, compressed air can be used to gently blow from the back of the filter material under low pressure (be careful not to cause damage to the filter material due to excessive pressure), or a soft brush can be used to gently sweep the surface floating dust to remove the dust that can fall off the surface layer and temporarily restore some ventilation volume.
Note: This method can only be used for short-term emergencies and should not be used frequently; otherwise, it may damage the structure of the filter material or cause dust to enter the subsequent system.
Regularly check the resistance and appearance
Install a differential pressure gauge to monitor the resistance changes before and after the filter. When the resistance approaches 1.5 to 2 times the initial resistance, make preparations for replacement in advance to avoid filter material damage due to excessive resistance.
Regularly (such as once a week) visually inspect the appearance of the filter. If any problems such as damaged filter material, deformed paper frame, or poor sealing are found, it should be replaced immediately to prevent unfiltered air from directly penetrating.
Fourth, it is equipped with a simple pre-filter to share the filtration pressure
A simpler pre-filtering device (such as nylon mesh or metal mesh filters) should be added at the front end of the filter to first intercept hair and large particle impurities (such as insects and paper scraps), reducing the large particle pollutants entering the paper frame primary filter and indirectly extending its service life. This type of pre-filtering device is low-cost, easy to clean and can be reused repeatedly.
Precautions
The core filter material of the paper frame primary filter is paper or non-woven fabric, which is not washable by itself (water washing will cause the filter material to fail). Excessive cleaning will instead reduce the filtration efficiency and even damage the filter.
The prerequisite for extending the service life is not to affect the filtration effect and system safety. If the filter is obviously clogged, the resistance exceeds the standard or the filter material is damaged, it must be replaced in time. Otherwise, it may lead to insufficient ventilation volume, increased energy consumption, and even contaminate subsequent equipment (such as medium-efficiency filters, fans, etc.), which will instead increase maintenance costs.
الملخص
The service life of the paper frame primary filter can be extended to a certain extent by reducing the dust load, optimizing the operating parameters, conducting regular inspections and appropriate pretreatment, but the principle of “moderation” should be followed. In essence, it is still a disposable consumable. Reasonable replacement is the key to ensuring the efficient operation of the system.
