If the spray dryer does not have negative pressure, it may be due to a variety of factors. The most common problems include leaking air in the pipes or malfunctioning pneumatic control valves. In addition, the internal packing of the drying tower, the bag of the bag filter is blocked, the compressed air pressure is insufficient or the flow rate is insufficient, and the suction power is not enough, which may also be the reasons why the spray dryer cannot generate negative pressure.
To solve this problem, the following measures can be taken:
First, check the pipes for air leaks. If an air leak is found, the pipe should be repaired or replaced in time to ensure that the gas can enter the spray dryer normally.
Secondly, check if the pneumatic control valve is working properly. If the control valve is damaged, it needs to be replaced with a new pneumatic control valve to ensure that the gas flow can be effectively controlled.
Third, check whether the packing inside the drying tower is clogged. If the packing is clogged, the packing inside the dryer needs to be cleaned to restore smooth airflow.
Fourth, check whether the bag of the bag filter is blocked. If the bag is clogged, it needs to be cleaned or replaced to ensure smooth air circulation.
Fifth, check whether the pressure and flow rate of the compressed air are normal. If the pressure or flow rate is insufficient, the pressure and flow of the compressed air need to be adjusted to ensure that the spray dryer can work properly.
Finally, check if the suction power is sufficient. If the suction power is insufficient, you need to check whether the suction power is normal and take appropriate measures to adjust it.
By taking the above measures, the problem that the spray dryer has no negative pressure can be effectively solved, and the normal operation of the equipment and the stability of the production line can be ensured. At the same time, in order to prevent the recurrence of similar problems, it is recommended to regularly maintain and maintain the spray dryer and strengthen the daily monitoring and management of the equipment.