Screen for separating solid residues, and in particular for separating sheet or expanded material, such as bags or parts of bags made of plastic, polystyrene, spongy material or another light material, which comprises a separation station (10) interposed between the inlet port (P1) and the outlet port (P2) of the screen above its screening surface (P) and preferably after the powders and the lightest portions have already been separated. The station (10) comprises a hood (11) delimiting a suction chamber (13), and insufflation means (15) for orienting at least one lifting air flow (16) in the suction chamber (13) at the screening surface (P). The lifting air flow (16) is oriented for forming a vortex (17) confined in said suction chamber (13) and with rotation axis (Z) orthogonal to the screening surface (P) capable of lifting the sheet material and delivering it to suction means (18) associated with the hood (11).

A safety cabinet includes a work space where work is performed; a front panel disposed in a front surface of the work space; and an air cleaner that cleans air to be supplied to the work space. An imaging device is disposed on one side surface side of side surfaces of the work space, and a connection opening is disposed on the other side surface side facing one side surface.

An example welding system includes: a downdraft table having: a work surface; and a suction source configured to create a negative pressure through at least one of the work surface or a second surface adjacent to the work surface; and a positive pressure source configured to direct a positive pressure airflow around at least a portion of a periphery of the downdraft table.

An apparatus for manufacturing a display device includes: a stage unit; and a suction unit located above the stage unit, wherein the suction unit includes: a main body including an outer box with top and bottom openings and an inner cup disposed in the outer box; a first air blower disposed above the main body and including a first main pipe extending in a first direction and a second air blower including a second main pipe extending in a second direction intersecting the first direction; a lower plate coupled to a lower end of the outer box and including a through hole; and a suction inlet defined by an inner end of the lower plate defining the through hole and a lower end of the inner cup, wherein the suction inlet is opened downward.

An apparatus for manufacturing a display device includes: a stage unit; and a suction unit located above the stage unit, wherein the suction unit includes: a main body including an outer box with top and bottom openings and an inner cup disposed in the outer box; a first air blower disposed above the main body and including a first main pipe extending in a first direction and a second air blower including a second main pipe extending in a second direction intersecting the first direction; a lower plate coupled to a lower end of the outer box and including a through hole; and a suction inlet defined by an inner end of the lower plate defining the through hole and a lower end of the inner cup, wherein the suction inlet is opened downward.

A foreign object inspection device determines the position and the shape of foreign objects remaining on a workpiece. The foreign object inspection device for inspecting foreign objects at inspection spots of a workpiece includes a nozzle including a suction port that sucks a foreign object, an exhauster, and a suction channel connecting the nozzle to the exhauster, and a detector installed on the suction channel to detect foreign object information about the shape of the foreign object sucked through the suction port.

An air extraction device including suction apparatus having a suction nozzle situated on a box arranged at the rear of a worktop, the suction nozzle being connected to an extraction duct, the device including supply apparatus having a blower fan connected to a fresh air inlet and a supply tube containing at least one supply nozzle provided with an air outlet slot, the air exiting the slot in the form of at least one air curtain directed towards the suction nozzle, the supply tube being situated at the end of an articulated arm. The articulated arm is pivotably mounted such that, when the arm is in a low position, the air curtain separates a breathing area of an operator in front of the worktop from a handling area situated on the worktop, such that the operator's movements do not cross the air curtain.

A method for controlling the direction of gas suctioning is carried out in a device (1) for producing a three-dimensional object (2) by selectively solidifying building material (13) layer by layer. The device (1) comprises an application device (12-14) for applying a layer of the building material (13) to a build area in a working plane (10), a solidifying device (20) for selectively solidifying the building material (13) in the applied layer, and at least two gas nozzles (40) which are arranged at the edge of the build area. The gas nozzles (40) are switchable into a function for suctioning gas from the device (1) and to a functionless state, and are switched depending on an operating state of the device (1).

An object of the present invention is to provide a safety cabinet that allows a clearer observation of contamination of an operation stage surface. In order to realize the object, the safety cabinet is configured to include an operation space including an operation stage; a front panel formed in a front surface of the operation space; an operation opening provided in a lower portion of the front panel; a suction port that is provided in the vicinity of the operation opening on a front side of the operation stage to lead downward; and an air circulation path through which air suctioned from the suction port flows along a lower portion, a back surface, and an upper portion of the operation space, in which the operation stage is made of a transparent material, and a light source is provided to irradiate the operation stage with a light from a side of the operation stage, which is opposite to the operation space.

A fume cupboard, of the type comprising a framework with two front uprights (2a,2b), two rear uprights (3a,3b), a rear panel (11), two side panels (6,7), an upper panel (8) and a sash (4) consisting of a frame (12) and at least one panel (13) for closing an inner chamber (10) of said fume cupboard (1). The fume cupboard of the invention comprises a transmission system (14) for transmission of the vertical movements of said sash (4) located inside the abovementioned front uprights (2a,2b), or inside said front uprights (2a,2b) and said rear uprights (3a,3b).