Dust control system for spot filters

A dust control system configured to:

• intercept a cleaning signal from a spot dust filter mounted on industrial equipment;
• close a first valve to isolate the spot dust filter from the industrial equipment in response to the cleaning signal;
• allow a cleaning pulse from the spot dust filter to be contained within a plenum;
• collect dust dislodged by the cleaning pulse within an intermediate chamber;
• sequentially operate a second valve and a third valve in an airlock configuration to discharge the collected dust into the industrial equipment while maintaining isolation between the spot dust filter and the industrial equipment;
• and
• reopen the first valve to restore normal filtration operation after dust discharge is complete.

A method of controlling dust emissions from a spot dust filter mounted on industrial equipment, comprising:

• intercepting, by a control system, a cleaning signal generated by the spot dust filter;
• closing, by the control system, a first valve positioned between the spot dust filter and the industrial equipment in response to the cleaning signal;
• releasing, by the control system, the cleaning signal to the spot dust filter to generate a cleaning pulse that is contained within a plenum;
• opening, by the control system, a second valve to transfer collected dust dislodged by the cleaning pulse from the plenum to an intermediate chamber while the first valve remains closed;
• closing, by the control system, the second valve and opening a third valve to discharge the collected dust into the industrial equipment;
• closing, by the control system, the third valve;
• and
• reopening, by the control system, the first valve to resume normal filtration operation.