A filter holding frame that may be used agricultural environments. The filter holding frame may include a plurality of interconnecting members with an upstream hemmed edge and downstream opposing flanges. The opposing flanges of the members may define a sealing face configured for a plurality of air filters. The members of the outer periphery of the filter holding frame may include the mounting surface and the sealing face.

A transverse secondary dust collector is to have a sealable housing transversely provided therein with a blower set, an air intake barrel and an air guide barrel. Thus, after outside dust is sucked into the air intake barrel, the dust will produce helical airflow at the inner wall of the air guide barrel. In the process of sucking in dust, heavy dust will reduce kinetic energy and naturally fall into the dust collecting barrel, while light dust will be attracted by the blower set and guided to get into the filter barrel, and after filtration, clean air will be exhausted to the outside. The blower set, the air intake barrel, the air guide barrel and the dust collecting barrel of the transverse secondary dust collector can be collectively installed in the housing, able to diminish the volume of the dust collector and lower noise.

A catalytic reactor comprises a filter unit which extracts and collects particles from the fluid flow stream above the reactor internals, the filter unit comprises elements which are safely, easily and quickly handled without the need for tools.

In order to provide a filter system for separating off contaminants from a stream of untreated gas that contains contaminants that is of simple construction and is operable efficiently, it is proposed that the filter system should include the following: a base construction through which the stream of untreated gas is guidable and which includes at least one filter module receptacle for receiving at least one filter module, and at least one filter module which is selectively arrangeable on and/or in the at least one filter module receptacle and/or removable therefrom, wherein the at least one filter module includes a plurality of filter element receptacles for receiving a plurality of mutually independent filter elements.

The objective of this invention is to provide a filter module for coating equipment that can improve the efficiency in removing coating-material mist and preventing the outflow of such coating-material mist to the outside. The filter module of this invention is made of a flammable material and includes an outer box, an eliminator and a baffle plate. Of the outer box, the air A2 containing the coating-material mist flows into the outer box from the outer-box inlet and is discharged from the outer-box outlet. The eliminator is formed by arranging zigzag-shaped eliminator elements in parallel to separate the coating-material mist from the air A2. The baffle plate is formed by arranging baffle-plate elements having an inclined surface for guiding the air A2 in parallel into the inflow-side space S2 of the eliminator, and guides the air A2 that has been introduced from the outer-box inlet to the inflow-side space S2.

An air purification module for purifying air includes a photocatalyst filter and a light source unit sequentially arranged in a selected direction. The light source unit is spaced apart from the photocatalyst filter to provide light to the photocatalyst filter and includes a substrate and a light source disposed on the substrate. The substrate includes at least one aperture to control a flow channel and a flow velocity of air so as to improve air purification effects through the photocatalyst filter when the air flows from the substrate towards the photocatalyst filter.

The paint apparatus includes a paint booth having an upper chamber in which a painting operation is performed and a lower chamber placed below the upper chamber; a receiving portion 2 that receives air discharged from the paint booth; a filter module 3 attachable to and detachable from the receiving portion 2 and including filter portions 31 and 32 that trap paint mist from air that passed through the receiving portion 2, a filter inlet portion 33 that receives an inflow of air from the receiving portion 2, and a filter outlet portion 34 that discharges air from which the paint mist was trapped by the filter portions 31 and 32; and rails 6 that guide the filter module 3 to an attached position at which the filter module 3 is attached to the receiving portion 2.

A dust extraction unit is disclosed including a first and a second air filter removable and mountable within the dust extraction unit and a body defining an air flow path which passes through the first and the second air filters when the first and the second air filters are mounted within the body of the dust extraction unit. The body of the dust extraction unit includes a first portion operable to receive the first air filter and a second portion operable to receive the second air filter. The first and second portions are connected by a hinge so that the first portion is moveable between a first configuration in which the first and second portion define an air flow path through the dust extraction unit and a second configuration which provides access to the portion of the dust extraction unit operable to receive the second air filter.

An air cleaner according to an embodiment of the present disclosure includes: a main body including a main fan configured to generate air flow, a discharge part through which air passing through the main fan is discharged, a wireless power transmitter disposed on one side, and a power supply connected to the wireless power transmitter; and a flow switching device movably provided on the one side of the main body, wherein the flow switching device includes: a first guide tool configured to guide a first direction rotation of the flow switching device; a second guide tool configured to guide a second direction rotation of the flow switching device; and a wireless power receiver configured to supply power to the first guide tool and the second guide tool.

A filter retaining mechanism for retaining a filter and a pre-filter in relation to a filter aperture of a filter frame. A base clip retained by a proximal portion of a shank engages a flange of the frame, and a filter/pre-filter clip is retained by a distal portion of the shank. The filter/pre-filter clip has a proximal retaining formation that forms a distal retaining surface of a first reception area for retaining a filter and a proximal retaining surface of a second reception area for retaining a pre-filter and a distal retaining formation that forms a distal retaining surface of the second reception area. The filter/pre-filter clip is pivotable about a longitudinal axis between a first condition wherein the proximal and distal retaining formations retain the filter and the pre-filter and a second condition wherein the proximal and distal retaining formations face away from the filter aperture to release the filter and the pre-filter.