A method for removing residual filter cakes that remain adhered to a filter after typical particulate removal methodologies have been employed, such as pulse-jet filter element cleaning, for all cleanable filters used for air pollution control, dust control, or powder control.

A mobile vehicle mounted dry filtration system to support a grinder system used for removal of markings, creating rumble strips, or the like. Blowers create a vacuum for drawing debris and dust from the grinder system into a debris bin. Large debris is removed from the vacuum draw and remains in the bin for later disposal. Small particles and dust are drawn into parallel positioned filter cyclones that have a cyclonic separation followed by flexible and inexpensive bag filters. The flexible filters are cleaned using vibrating diaphragms mounted on the top of the filter cyclones subject to a reverse air flow by the blowers using slide valves. A polishing tank containing water receives the exhaust from the filter cyclones for removal of airborne particles and sound suppression.

A mobile vehicle mounted dry filtration system to support a grinder system used for removal of markings, creating rumble strips, or the like. Blowers create a vacuum for drawing debris and dust from the grinder system into a debris bin. Large debris is removed from the vacuum draw and remains in the bin for later disposal. Small particles and dust are drawn into parallel positioned filter cyclones that have a cyclonic separation followed by flexible and inexpensive bag filters. The flexible filters are cleaned using vibrating diaphragms mounted on the top of the filter cyclones subject to a reverse air flow by the blowers using slide valves. A polishing tank containing water receives the exhaust from the filter cyclones for removal of airborne particles and sound suppression.

Systems and methods of self-cleaning filtering may include: (a) filtering, via a filter media comprising a clean side and a dirty side, a fluid, thereby accumulating particles from said fluid on said dirty side; and (b) shaking, via one or more shaking sources, one or both of (i) a filter housing in physical contact with said filter media or (ii) a reinforced structure in physical contact with said filter media, thereby causing said filter media to shake to dislodge at least a portion of said particles from said dirty side of said filter media.

Systems and methods of self-cleaning filtering may include: (a) filtering, via a filter media comprising a clean side and a dirty side, a fluid, thereby accumulating particles from said fluid on said dirty side; and (b) shaking, via one or more shaking sources, one or both of (i) a filter housing in physical contact with said filter media or (ii) a reinforced structure in physical contact with said filter media, thereby causing said filter media to shake to dislodge at least a portion of said particles from said dirty side of said filter media.

A filter cleaning unit for a vacuum cleaner is provided, in particular a construction site vacuum cleaner, wherein the vacuum cleaner includes a turbine for generating a suction air flow and a filter for filtering the suction air flow. A suction channel is provided between the turbine and the filter, wherein the suction channel can be divided by a separating element into at least a first suction part channel and a second suction part channel, wherein the filter cleaning unit has at least one valve unit for opening or closing the suction part channels. A vacuum cleaner with such a filter cleaning unit, and a method for cleaning a filter of a vacuum cleaner with a filter cleaning unit is also provided. A controllable filter cleaning can be provided, in which the cleaning effect can be reinforced by the advantageous interaction of the filter cleaning unit and its components.

A filter cleaning unit for a vacuum cleaner is provided, in particular a construction site vacuum cleaner, wherein the vacuum cleaner includes a turbine for generating a suction air flow and a filter for filtering the suction air flow. A suction channel is provided between the turbine and the filter, wherein the suction channel can be divided by a separating element into at least a first suction part channel and a second suction part channel, wherein the filter cleaning unit has at least one valve unit for opening or closing the suction part channels. A vacuum cleaner with such a filter cleaning unit, and a method for cleaning a filter of a vacuum cleaner with a filter cleaning unit is also provided. A controllable filter cleaning can be provided, in which the cleaning effect can be reinforced by the advantageous interaction of the filter cleaning unit and its components.

Embodiments herein relate to filtration systems that can pulse clean filter elements selectively, in specific patterns, to enhance cleaning efficacy. In an embodiment, a filtration system is included having a plurality of filter element mounts configured to retain filter elements, a compressed gas supply, and a plurality of valves in fluid communication with the compressed gas supply. The system further including a control circuit configured to control actuation of the plurality of valves. The system can operate in a first mode and a second mode. Wherein operating in a first mode includes opening valves according to a first valve actuation pattern and operating in a second mode includes opening valves according to a second valve actuation pattern. The system can be configured to periodically switch from the first mode to the second mode and compare the efficacy of the two modes. Other embodiments are also included herein.

Embodiments herein relate to filtration systems that can pulse clean filter elements selectively, in specific patterns, to enhance cleaning efficacy. In an embodiment, a filtration system is included having a plurality of filter element mounts configured to retain filter elements, a compressed gas supply, and a plurality of valves in fluid communication with the compressed gas supply. The system further including a control circuit configured to control actuation of the plurality of valves. The system can operate in a first mode and a second mode. Wherein operating in a first mode includes opening valves according to a first valve actuation pattern and operating in a second mode includes opening valves according to a second valve actuation pattern. The system can be configured to periodically switch from the first mode to the second mode and compare the efficacy of the two modes. Other embodiments are also included herein.