How to deal with low pressure of dust collector

Core solution: If the pressure of the dust collector is low, the system needs to investigate air path blockage, air leakage, and equipment wear, and combine intelligent regulation and preventive maintenance. ‌

1、 Basic investigation and emergency response

Check for air path blockage

Tracheal blockage: Clean the debris in the trachea and confirm the circulation of compressed air.

Drying machine blockage: Replace the drying agent or temporarily bypass the drying machine to reduce the impact of moisture.

Detecting air leakage in the gas circuit

Apply soapy water to the air path connection, observe the generation of bubbles to locate the leak point, and re tighten or wrap the raw material tape seal.

Assess equipment wear and tear

Severely worn Venturi tubes (throat pits ≥ 2mm) need to be replaced to avoid 5% -8% pressure loss.

2、 Optimization of operating parameters

Adjust the dust cleaning parameters

Extend the cleaning cycle or shorten the blowing time to reduce the consumption of compressed air.

Install a differential pressure sensor and link it with a frequency converter to automatically adjust the fan speed and dust cleaning frequency, improving pressure stability.

Optimize pipeline layout

Change the 90 ° right angle elbow to a 30 ° -45 ° angled elbow to reduce local resistance by more than 40% (verified through CFD simulation).

3、 Technical upgrade and maintenance system

Boosting and selection improvement

Install induction fans or series boosting devices to compensate for the problem of fan selection being too small.

Select filter materials that are suitable for the working conditions (such as 550g/m ² PTFE coated filter materials) and control the initial pressure difference.

4、 Establish a preventive maintenance mechanism

Perform a 'three hour diagnosis': monitor fan vibration every hour, check filter bag permeability every two hours, and clean the ash hopper unloader every three hours.

Install laser dust concentration meter, trigger warning for abnormal data, and intervene in pressure fluctuations in advance.

By using the above methods, the system pressure can usually be restored to over 90% of the design value within 72 hours, and the comprehensive failure rate can be reduced by over 60%.