Pulse jet cleaning is a cleaning mechanism used in dust collectors to remove accumulated dust from filter bags or cartridges. It works by releasing short bursts of compressed air through a series of nozzles into the filter bags, causing them to expand and contract rapidly. This action dislodges the dust particles, which then fall into a collection hopper below. Pulse jet cleaning is a highly efficient and effective method for keeping dust collectors operating at peak performance and can help extend the life of filter media.