1. The importance of the injection pressure of the bag filter
The injection pressure of the bag filter refers to the pressure at which the pulse valve injects compressed air into the filter bag during the ash cleaning process. The size of the injection pressure directly affects the removal effect of dust on the filter bag. If the injection pressure is too low, it may not be able to completely remove the dust on the filter bag, resulting in the blockage of the filter bag and affecting the dust removal effect; If the injection pressure is too high, it may damage the filter bag and shorten its service life.
2. Factors affecting the injection pressure of the bag filter
Dust properties: The particle size, density, viscosity and other characteristics of dust will affect the selection of spray pressure. In general, larger and denser dusts require higher injection pressures.
Filter bag material: The filter bag of different materials has different bearing capacity for injection pressure. In general, filter bags that are resistant to high temperatures and wear can withstand high injection pressures.
Cleaning method: There are two types of cleaning methods: ** cleaning and offline cleaning. Off-line cleaning needs to be carried out after the dust collector is shut down, and higher injection pressures can be used; The ** ash cleaning needs to be carried out during the operation of the dust collector, and the injection pressure needs to be controlled to avoid affecting the dust removal effect.
3. How to determine the injection pressure of the bag filter
To determine the injection pressure of the bag filter, the above factors need to be considered comprehensively according to the actual situation. In general, the injection pressure can be determined by the following steps:
Understand the characteristics of dust: First of all, you need to understand the particle size, density, viscosity and other characteristics of the dust to be processed, so as to choose the appropriate injection pressure range.
Select the right filter bag material: Select the appropriate filter bag material according to the dust characteristics and the use environment to ensure that the filter bag can withstand the selected spray pressure.
Determine the cleaning method: choose the appropriate cleaning method according to the actual needs, and consider its requirements for injection pressure.
Refer to the manufacturer's suggestions: When determining the injection pressure, you can refer to the recommended values provided by the dust collector manufacturer and adjust it according to the actual situation.
4. Precautions
When determining the injection pressure of the bag filter, the following points need to be noted:
Avoid excessive or low injection pressure, so as not to damage the filter bag or affect the dust removal effect.
Regularly inspect and replace the filter bags to ensure the proper operation of the dust collector.
Adjust the injection pressure according to the actual situation to adapt to different dust characteristics and use environment.
To sum up, the injection pressure of the bag filter needs to be selected and adjusted according to the actual situation. By understanding the dust characteristics, selecting the appropriate filter bag material and ash cleaning method, and referring to the manufacturer's suggestions, the appropriate injection pressure can be determined to ensure the normal operation and efficient dust removal of the bag filter.