This publication discloses a filter unit connectable to a mobile communication device including a fan for generating an air flow inside the filter unit, electrodes covered with a photo catalytic material like TiO.sub.2 in the air flow, UV-LEDs illuminating the electrodes, and outlet for the air flow directed in direction of user of filter unit.

A dust filtration unit for a frac sand storage bin and a method for using the same is disclosed. The dust filtration unit includes an adapter base adapted for attachment to an opened inspection hatch on the sand storage bin, a diffuser manifold attached to the adapter base, and a top plate of the diffuser manifold defining a plurality of filter bag orifices. Each of a plurality of filter bags is releasably attached to one of the plurality of filter bag orifices. In a non-limiting embodiment, the dust filtration unit further includes a hinge between the adapter base and the diffuser manifold, wherein the hinge rotatably attaches the adapter base to the diffuser manifold.

A filter system and clamp system for a gas turbine air inlet uses a single clamp system that allows for securing in place both a first element and a second element on the grid of the gas turbine air inlet. The clamp system can be released to allow for services of the first filter element, while the second filter element remains in sealing engagement with the grid.

The pocket channel frame provides a means for attaching the distal ends of a pocket frame without the need of any tools. The pocket channel frame is formed from a longitudinal member having an elongated “C” shaped cross section. One end comprises is a flared out female end with a rectangular slot or 5 hole in it. The opposing distal end of the longitudinal having a C shaped cross section is swaged down into a projecting male end including a lance punched in the web. When the male end is swaged, an edge is created in the transition area from male to female which acts as a stop means for cooperatively engaging the female receiving distal end and sets the length of a short side of the pocket channel frame. During assembly, the lance snaps into the hole cooperatively engaging the slot on the 10 female side preventing the channel frame from coming back apart.

A road vehicle with a vehicle frame and a rear axle connected to the vehicle frame is provided with an ambient air purification device with filter elements for removing dust, particulate matter, and gases from ambient air. The ambient air purification device is arranged transverse to a longitudinal vehicle axis in an exterior region of the road vehicle at a vehicle rear of the road vehicle in an underfloor region such that at least the filter elements are arranged behind the rear axle of the road vehicle in a travel direction of the road vehicle. The ambient air purification device is received in an installation space of the vehicle frame. The ambient air purification device is flowed through in longitudinal vehicle direction. A free outflow zone of the ambient air purification device is arranged, in travel direction of the road vehicle, behind the ambient air purification device.

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 filter system for adsorbing an odor of a gas flow in an industrial process includes a filter module (1) with a layer (11) containing active adsorbent (3). The layer (11) includes a plurality of active adsorbent containing permeable bags (2) arranged in close proximity to each other.

A back-blowing unblocking device for the dustproof screen of the dryer, a dustproof equipment, and a dryer are provided. The back-blowing unblocking device for the dustproof screen of the dryer utilizes a closed compartment space of the dryer. The back-blowing unblocking device for the dustproof screen of the dryer includes a high-pressure air main pipe, a high-pressure air horizontal pipe, high-pressure air branch pipes, a shunt connecting pipe, and back-blowing fan-shaped nozzles. A length of each high-pressure air branch pipe is equal to a length of an A-shaped dustproof screen. Both ends of the each high-pressure air branch pipe are closed and an upper center opening is welded to the shunt connecting pipe. Both sides of the each high-pressure air branch pipe are densely arranged with the back-blowing fan-shaped nozzles.

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.

A filter assembly, has: a housing defining an internal volume and an outlet fluidly connectable to an oil system; a filter cartridge removably received within the internal volume of the housing; and an inlet conduit defining an inlet fluidly connectable to the oil system, the inlet conduit being in fluid flow communication with the internal volume of the housing, the inlet conduit having: a wall circumscribing a main flow passage from the inlet to the internal volume, and a sedimentation pocket defined by the wall, the sedimentation pocket extending downwardly away from the main flow passage and in a direction having a component parallel to a direction of a gravity when the filter assembly is in use.