A smoke and dust treatment apparatus for welding, said apparatus comprising a polishing and dust extraction module and a smoke and dust purification module. The polishing and dust extraction module comprises a double-layer dust extraction cover (3), a protective cover (2), an industrial brush (4), a first air guide portion, a second air guide portion (24) and a drive motor (22), the drive motor (22) driving the industrial brush (4) to rotate at high speed to perform polishing. During welding and polishing, a mechanical arm (6) drives the double-layer dust extraction cover (3), and a suction hole (20) of the double-layer dust extraction cover (3) and a suction guide hole (19) on the industrial brush (4) simultaneously take in toxic gas and debris such as iron filings.

A smoke and dust treatment apparatus for welding, said apparatus comprising a polishing and dust extraction module and a smoke and dust purification module. The polishing and dust extraction module comprises a double-layer dust extraction cover (3), a protective cover (2), an industrial brush (4), a first air guide portion, a second air guide portion (24) and a drive motor (22), the drive motor (22) driving the industrial brush (4) to rotate at high speed to perform polishing. During welding and polishing, a mechanical arm (6) drives the double-layer dust extraction cover (3), and a suction hole (20) of the double-layer dust extraction cover (3) and a suction guide hole (19) on the industrial brush (4) simultaneously take in toxic gas and debris such as iron filings.

A method for filtering airborne particulates is described. The method includes providing an exhaust hood, and the exhaust hood defines an intake and the exhaust hood being adapted to receive airborne particulates via the intake. The method also includes conveying a portion of a filter media from a media source area to an active media area, transferring the portion of the filter media from the active media area to a media discard area, the media discard area and the media source area being disposed on substantially opposed sides of the active media area, and severing the portion of the filter media in the media discard area from a remainder of the filter media.

Disclosed embodiments include an apparatus for reducing contamination or obstruction of a multi-directional flow filtration system. As one example, a scalper that is to be employed on a multi-directional flow filtration system comprises a body and a set of scalping walls forming a plurality of helical chambers, the set of scalping walls helically extending along at least a portion of an interior of the body in a longitudinal direction. In this way, the plurality of helical chambers may enable the multi-directional flow filtration system to passively scalp contaminants in a manner that improves overall operation of the multi-directional flow filtration system. Other embodiments may be described and/or claimed.

Disclosed embodiments include an apparatus for reducing contamination or obstruction of a multi-directional flow filtration system. As one example, a scalper that is to be employed on a multi-directional flow filtration system comprises a body and a set of scalping walls forming a plurality of helical chambers, the set of scalping walls helically extending along at least a portion of an interior of the body in a longitudinal direction. In this way, the plurality of helical chambers may enable the multi-directional flow filtration system to passively scalp contaminants in a manner that improves overall operation of the multi-directional flow filtration system. Other embodiments may be described and/or claimed.

A filtering device, a generator and a wind turbine generator system are provided. The filtering device comprises a force-bearing cover plate, a surrounding plate, a first filter screen structure, a second filter screen structure and a filter cartridge; the force-bearing cover plate and the surrounding plate enclose an accommodation space for filling the filter cartridge, the surrounding plate forming at least a part of a side wall of the accommodation space; the first filter screen structure is provided on an upper side of the filter cartridge, is located on a lower side of the force-bearing cover plate, and substantially covers an upper side surface of the filter cartridge; and the second filter screen structure is provided at a lower side of the filter cartridge, and covers a lower side surface of the filter cartridge.

A filtering device, a generator and a wind turbine generator system are provided. The filtering device comprises a force-bearing cover plate, a surrounding plate, a first filter screen structure, a second filter screen structure and a filter cartridge; the force-bearing cover plate and the surrounding plate enclose an accommodation space for filling the filter cartridge, the surrounding plate forming at least a part of a side wall of the accommodation space; the first filter screen structure is provided on an upper side of the filter cartridge, is located on a lower side of the force-bearing cover plate, and substantially covers an upper side surface of the filter cartridge; and the second filter screen structure is provided at a lower side of the filter cartridge, and covers a lower side surface of the filter cartridge.

A floor cutting machine having a dust collection cover coupled thereto may comprise a main frame having a first dust collection cover fixing pin configured to attach the dust collection cover to the floor cutting machine; a plurality of front wheels located at a front of the main frame; at least one rear wheel located at a rear of the main frame; a cutting frame having one side fixed to a vicinity of the rear of the main frame and the other side configured to be moved upwards and downwards; a cutting blade fitted on opposite sides of a cutting shaft located in the vicinity of the other side of the cutting frame; and a front frame detachably connected to the front of the main frame, the front frame having a second dust collection cover fixing pin configured to attach the dust collection cover to the floor cutting machine.

The disclosure relates to a sealing arrangement comprising a gasket arranged to seal a gap formed between a first element and a second element, wherein the gasket is arranged to be located in the gap and to be in contact with the first and the second elements, where the gasket comprises two elongated gasket members located on a distance from each other so as to form an intermediate gasket space confined by the gasket members and said first and second elements, and in that the sealing arrangement further comprises a pressure source adapted to apply a pressure on the intermediate gasket space, said pressure source preferably being configured to maintain a set pressure difference towards the surroundings. The disclosure further relates to a method, a system, a computer program product arranged to perform the method, a further sealing arrangement and a further method of monitoring sealing integrity of a pharmaceutical production space.

The disclosure relates to a sealing arrangement comprising a gasket arranged to seal a gap formed between a first element and a second element, wherein the gasket is arranged to be located in the gap and to be in contact with the first and the second elements, where the gasket comprises two elongated gasket members located on a distance from each other so as to form an intermediate gasket space confined by the gasket members and said first and second elements, and in that the sealing arrangement further comprises a pressure source adapted to apply a pressure on the intermediate gasket space, said pressure source preferably being configured to maintain a set pressure difference towards the surroundings. The disclosure further relates to a method, a system, a computer program product arranged to perform the method, a further sealing arrangement and a further method of monitoring sealing integrity of a pharmaceutical production space.