The invention relates to the technical field of filtering equipment, and discloses a dust removal filter cartridge. The dust removal filter cartridge includes a filter material and a filter net arranged in the filter material. A top cover is arranged on a top end of the filter material, and an air outlet is provided in the top cover. A bottom end of the filter material is sealed with a bottom cover. An inner side of the filter material is provided with binding tapes which are adhesively fixed on the filter material. An outer surface of the filter material is an effective filtering surface for dust removal, and the binding tapes are arranged on the inner side of the filter material. During the dust removal process, filtering area of an outer surface of a filter paper increases, and the filtering effect is good.

A system for treating exhaust gas generated by combustion of biomass comprises a frame, a first cyclonic separation stage supported on the frame and comprising a plurality of parallel gas cyclones in fluidic communication with an inlet receiving the exhaust gas for removing from the exhaust gas particulate matter exceeding a first threshold size, and a second bag filtration stage supported on the frame and comprising a plurality of serially-communicated baghouses each comprising a plurality of bag filters therein for removing, from the partially treated exhaust gas received from the first cyclonic separation stage, particulate matter exceeding a second threshold size that is smaller than the first size which was passed through the first treatment stage. The gas cyclones of the first stage are arranged in a laterally extending row across the frame and the baghouses are arranged in a longitudinally extending row across the frame.

A coalescing filter element (300) with double drainage layers, including an inner coalescing component (1) configured to captured a large amount of liquid in gas, and an outer coalescing component (2) configured to coalesce and filter a small amount of liquid remaining in the gas. The inner coalescing component (1) and the outer coalescing component (2) are cylindrical structures disposed in a vertical direction and opened at two ends. The outer coalescing component (2) is sleeved on an outer side of the inner coalescing component (1), and an annular drainage space (3) is formed between the inner coalescing component (1) and the outer coalescing component (2). A top end cap (4) is provided on top ends of the inner coalescing component (1) and the outer coalescing component (2). A bottom end cap (5) is provided on bottom ends of the inner coalescing component (1) and the outer coalescing component (2). The bottom end cap (5) is provided with a gas inlet (503) communicated with an interior of the inner coalescing component (1).

Referring to the figures generally, a rotating filter cartridge includes a first endcap, a second endcap, and a filter media. The filter media is positioned between the first endcap and the second endcap. The filter media creates a mechanical seal between at least one of the first endcap or the second endcap during rotation of the rotating filter cartridge without the use of a potting material. In at least one embodiment, the rotating filter cartridge further includes a body secured to the first endcap and the second endcap. At least one of the first endcap or the second endcap, and the body, may form a pocket that radially pinches the filter media to form the mechanical seal.

The present disclosure pertains to a therapeutic gas delivery system (8) including a pressure generator inlet apparatus (10) configured to facilitate filtering of gas drawn into the inlet (14) of the pressure generator (16) of the system. The apparatus comprises a body (12) and a support (24). The body is configured to removably engage the inlet of the pressure generator and receive a particulate filter (18). The body forms an orifice (19) configured to conduct gas that has passed through the filter to the pressure generator inlet. The support is coupled to the body at or near the orifice. The support is configured to extend from the body toward the filter and support the filter. The support is configured to resist collapse of the filter into the orifice caused by gas flowing through the filter to the pressure generator inlet.

Compound air filters and methods thereof are provided for sequestering airborne contaminants including volatile organic compounds (VOCs) from air streamed through the air filters. An air filter can include a support frame having a shape and size suitable for seating the air filter within an air-filtering system. A compound filter medium can be retained within the support frame to remove the airborne contaminants and VOCs from air flowing through the air filter and the air-filtering system containing one or more of the air filters. A first media layer of the compound filter medium can be pleated with pleats and configured to exhibit a relatively high filtration efficiency and a low air pressure drop across the filter medium. A second media layer of the filter medium can be coupled to the first media layer and configured to maintain a uniform distribution of the pleats with the first media layer.

Embodiments provide a filter with a generally rectangular, non-cylindrical profile. The filter may have multiple pleat packs positioned between pleat covers that define regions and flow channels in a cavity of the filter body. The pleat covers have openings that allow a fluid to flow through the multiple pleat packs via parallel flows or series flows. End caps bonded to the body define flow passages for directing the fluid from an inlet to an outlet via the pleat packs for series or parallel filtration. The pleat packs may be made of the same or different materials and may be configured with the same or different heights based on flow requirements. A cage or a separator may be positioned between the pleat packs. The pleat packs may be made of a continuous pleated membrane with bridges defining a space between the pleat packs to accommodate the cage or separator.

Air cleaner assemblies, components therefor, and features thereof are described. Also described are methods of assembly and use. In depicted examples, the air cleaner assemblies and components optionally use advantageous housing seal features. Methods of assembly and use are described.

A filter frame for an air handling unit, an air handling unit, and a method of assembling a filter frame for an air handling unit. The filter frame (100) includes a holder (110) defining a cavity configured to receive a plurality of filter cells (201, 202; 201, 202, 203), and a removable lid (120) configured to secure the plurality of filter cells (201, 202; 201, 202, 203) in the cavity. The removable lid (120) can also include a biasing element (130) configured to urge the plurality of filter cells (201, 202; 201, 202, 203) together within the cavity, to assist with securing the plurality of filter cells (201, 202; 201, 202, 203) in the cavity.

The invention relates to a filter for filtering a liquid or a gas, with a pocket-shaped filter element which has a sleeve-shaped circumferential region, a closed head region and an open foot region, and with a frame element which has an annular base, in which the foot region of the filter element is accommodated, and at least one supporting strut which extends away from the base along the circumferential region of the filter element. An advantageous design of the filter is achieved by forming the head region of the filter element with a saddle shape, wherein two lateral tips are provided between which a channel-shaped recess is formed.