Hopper Blockages: Don't Let These 6 Issues Disrupt Your Operation

A clogged hopper can disrupt your entire filtration system. Understanding the root causes is the first step toward prevention. Here are the primary reasons behind hopper blockages in bag filters:

1.Infrequent Ash Discharge

Overly long ash-discharge cycles allow dust to accumulate excessively in the hopper, eventually leading to clogging.

2.Air Leakage During Discharge

In negative-pressure systems, air leakage while discharging ash disturbs airflow and hinders dust removal. This can prevent the hopper from emptying completely.

3.Insufficient Discharge Capacity

Undersized or improperly selected ash-handling equipment—or mechanical blockages within it—can reduce discharge rates below operational needs.

4.Moisture & Caking of Dust

Dampness causes dust to stick to the hopper walls. Over time, especially with temperature changes, this adhered layer builds up, hardens, and restricts flow.

5.Design Shortcomings

Common design flaws include:

Hopper cone angles too small (e.g., <60°), which impede dust flow.

Lack of anti-bridging devices such as vibrators or air cannons.

6.Equipment Failures

Examples include:

*Rotary valve jams (often due to foreign objects).

*Motor overload trips.

*Worn screw conveyor bearings or deformed blades.

These issues disrupt the smooth transfer of ash.

Want to know more? Contact us to get the answers you need.

Ms Yanice Yu

Qingdao Star Machine Technology Co.,Ltd.

Whatsapp/ Wechat ID: +8617852092959

Email:Yanice@starmachinechina.com