An air purifier is provided. The air purifier according to an exemplary embodiment includes a body including an air inlet and an air outlet, an air blowing unit disposed in an inside of the body, the air blowing unit being configured to forcibly introduce outside air into the inside of the body through the air inlet and discharge air into the air outlet, a filter unit rotatably disposed between the air blowing unit and the air inlet, a driving motor configured to rotate the filter unit, and a cleaning member detachably connected to a vacuum cleaner and disposed in proximity to the filter unit to guide contaminants adhering to the filter unit to be flown into the vacuum cleaner.

The current disclosure concerns a filtering apparatus (10) for filtering the air from an absorbent articles manufacturing process line, said filtering apparatus (10) comprising a. a housing (36) comprising one or more inlets (12); b. a filtering media 14 arranged downstream with respect to the airflow of the one or more air inlets (12); c. a support structure (16) comprising a cylindrical drum (18) comprising a first and second longitudinal ends (49,60), the filtering media (14) being secured to said cylindrical drum (18); d. a motor device (52) to rotate the cylindrical drum (18); and e. a first pump (38).

According to the disclosure, the motor device (52) comprises a driving mean (56) and the cylindrical drum (18) comprises the corresponding driven mean (50) arranged at the periphery of one of the longitudinal ends (49,60) of the cylindrical drum (18), the driving mean (56) actuating the driven mean and cylindrical drum (18).

The current disclosure concerns a filtering apparatus (10) for filtering the air from an absorbent articles manufacturing process line, said filtering apparatus (10) comprising a. a housing (36) comprising one or more inlets (12); b. a filtering media 14 arranged downstream with respect to the airflow of the one or more air inlets (12); c. a support structure (16) comprising a cylindrical drum (18) comprising a first and second longitudinal ends (49,60), the filtering media (14) being secured to said cylindrical drum (18); d. a motor device (52) to rotate the cylindrical drum (18); and e. a first pump (38).

According to the disclosure, the motor device (52) comprises a driving mean (56) and the cylindrical drum (18) comprises the corresponding driven mean (50) arranged at the periphery of one of the longitudinal ends (49,60) of the cylindrical drum (18), the driving mean (56) actuating the driven mean and cylindrical drum (18).

An air filter device of an industrial machine in which an air filter is arranged in a filtered portion of the industrial machine is provided, the air filter device includes: a first operation unit which transports the long air filter toward the filtered portion; a second operation unit which collects the air filter transported from the first operation unit and used in the filtered portion; and a control unit which controls the drive of the first operation unit and the second operation unit and the control unit includes a first determination unit which determines whether or not the air filter in the first operation unit is about to run out or runs out, and outputs, when the first determination unit determines that the air filter is about to run out or runs out, a signal indicating that the air filter needs to be replaced.

The present invention is a highly efficient and easily shippable drum filter device comprising segmented filter media, easy to manufacture light-weight drum segments or torsional tensioning elements. Preferably, it comprises bulged side wall, that can be fitted after shipment and that can be readily opened for easy access to the filter. The drum filter device can be incorporated into a filtering system further.

The present invention is a highly efficient and easily shippable drum filter device comprising segmented filter media, easy to manufacture light-weight drum segments or torsional tensioning elements. Preferably, it comprises bulged side wall, that can be fitted after shipment and that can be readily opened for easy access to the filter. The drum filter device can be incorporated into a filtering system further.

A filtration system includes a rotary drum and a media holding band that is configured to hold a filtration media on an outer surface of the rotary drum. The media holding band includes a strap and a connector. The strap includes a first end and a second end opposite the first end. The connector is configured to secure the first end of the strap relative to the second end of the strap.

Cleanable filters and methods of cleaning filters are described in the present application. The cleanable air filter includes a housing and a filter element installed in the housing. The filter element is configured to filter an operating fluid in a given application. The filter element is cleanable in-situ in the installed condition in the housing. The cleanable air filter further includes a cleaning fluid applicator configured to apply a cleaning fluid to the filter element while the filter element is in the installed condition in the housing such that the filter element is cleanable without being removed from the filter housing.

Described are multi-stage drum filtration systems including a primary rotary drum filter stage, at least one passive filter stage, and a main fan configured to create a vacuum on an inlet side of the primary rotary drum filter stage. The multi-stage drum filtration system may also include a HEPA filter stage. A controller may be configured to control a speed of the main fan to maintain an inlet vacuum to the primary rotary drum filter stage that corresponds to an inlet vacuum set point input.

An object of the present invention is to provide a dust collector including a pulse jet type dust removal mechanism capable of uniformly removing dust over the entire length of a cylindrical filter without increasing the pressure loss of the cylindrical filter; and a dust removal method for such a dust collector. The dust collector of the present invention is a dust collector including a pulse jet type dust removal mechanism for removing dust adhered to cylindrical filters, in which the pulse jet type dust removal mechanism includes: a first discharge section having first discharge nozzles for discharging pulse jets from first end side openings of the cylindrical filters toward inside of the cylindrical filters; and a second discharge section having second nozzles for discharging pulse jets from second end sides of the cylindrical filters toward openings on the first end side of the cylindrical filters, and the second nozzles for discharging are each provided on a tip side of a pipe line extending from the first end side to the second end side of the cylindrical filter.