The electrical equipment dust collection system may comprise a cover panel, a vacuum port, a blow gun, a handle, and a light strip. The electrical equipment dust collection system may be a tool for removing dust from electrical equipment located inside of an equipment enclosure. The cover panel may be adapted to cover an open side of the equipment enclosure. An air hose fitting on the blow gun may be adapted to removably couple to a source of compressed air and the blow gun may direct a stream of air at the electrical equipment such that the dust is dislodged from the electrical equipment. A vacuum fitting on the vacuum port may be adapted to removably couple to a vacuum hose of a vacuum cleaner such that the vacuum cleaner may suction the dust out of the equipment enclosure.

The present invention relates to a substrate treatment apparatus including: a substrate support assembly having a spin head adapted to seat a substrate thereonto; fluid supply unit for supplying fluid to the substrate; a bowl assembly having a plurality of bowls overlaid another outwardly in a radial direction thereof and surrounding the substrate support assembly; an ascending and descending unit for moving up and down the bowl assembly; and a chamber for accommodating the substrate support assembly, the fluid supply unit, the bowl assembly, and the ascending and descending unit, wherein the chamber is configured to have a plurality of process exhaust parts for performing exhaust from the inside of the bowl assembly and an environment exhaust part for performing exhaust from the outside of the bowl assembly.

The invention relates to a low-emission hot-in-place asphalt recycling equipment train system, which comprises at least three heating units, a milling unit, a centralized hot mix heating unit, a mixing unit, and compatible paving and compacting units. The hot-in-place asphalt recycling equipment train system realizes stepwise uniform heating of pavements, recycling of heat energy, centralized treatment and discharge of fumes, centralized and uniform hot mix heating of materials without causing damage, simultaneous metering and feeding of required materials at multiple points, and on-site mobile batch mixing.

The present application provides a dispensing apparatus for processing an electronic component, comprising: a first track component and a second track component, a first flow-guiding component and a second flow-guiding component, the first flow-guiding component being arranged at the top of the first track component, the second flow-guiding component being arranged at the top of the second track component, the first flow-guiding component having at least one first gas inlet and at least one first gas outlet in communication with each other, the at least one first gas inlet being configured to be in communication with a clean gas source, the second flow-guiding component having at least one second gas inlet and at least one second gas outlet in communication with each other, the at least one second gas inlet being arranged facing the first gas outlet, and the at least one second gas outlet being configured to be in communication with a gas discharge motive power apparatus, so that clean gas can flow toward the at least one second gas inlet from the at least one first gas outlet, thereby forming a clean gas region above the electronic component to be processed, to avoid contamination with impurities during processing.

Apparatus and associated methodology for collecting fumes, such as in a welding process environment. A collection apparatus has a wet collector enclosure defining an inlet, a dry collector enclosure defining an outlet, and a blower inside a plenum between the wet collector enclosure and the dry collector enclosure, the blower configured to move fumes into the inlet and out of the outlet.

An extractor system includes a negative pressure gas stream source, a negative pressure conduit, a positive pressure gas stream source, a plurality of positive pressure gas stream manifolds, and an operator interface. The negative pressure conduit is conveys the negative pressure gas stream from a work area. A first end of the negative pressure conduit is coupled to the negative pressure gas stream source, such that the negative pressure gas stream flows from the work area through a second end of the negative pressure conduit and toward the first end of the negative pressure conduit. The positive pressure gas stream manifolds are disposed about the negative pressure conduit at the second end of the negative pressure conduit, and fluidly coupled to the positive pressure gas stream source. The positive pressure gas stream is directed through the plurality of positive pressure gas stream manifolds. The operator interface allows a user to control the positive pressure gas stream through each of the plurality of positive pressure gas stream manifolds.

A filtration system is used with a pipe repair system, such as a cured-in-place pipe lining system. Before, during, and/or after the repair of the pipe with the pipe lining system, air from inside the pipe is directed into a filtration system. The filtration system removes contaminants, such as VOCs and other harmful gases, particles, and the like, with a filter, and then the filtered air is exhausted from the system. The filter can be a carbon filter or other filter that can remove harmful or hazardous materials and particles from the air prior to exhaust. The air is also sensed to acquire information, such as temperature, pressure, composition, flow, or the like.

An apparatus for the layer-by-layer formation of three-dimensional objects, the apparatus comprising a gas extraction system and an enclosed working space from which gas is to be extracted, wherein the working space is enclosed by side walls, a ceiling and a working surface, and comprises a working space inlet for allowing gas to enter into the working space, a working space outlet for allowing gas to exit the working space, and a build bed surface in which a layer of the object is formed; wherein the gas extraction system comprises: a primary conduit comprising at least a first primary inlet, at least a first interfacing inlet, and a primary outlet; and at least a first secondary conduit comprising a respective first secondary inlet and a respective first secondary outlet, the first secondary inlet being in fluidic communication with the working space for extracting gas from the working space, and the first secondary outlet being in fluidic communication with the first interfacing inlet; wherein the or each primary inlet is open to an environment external to the working space, and wherein the primary outlet is connectable to an external extraction source so as to suction gas from the primary conduit; and wherein the gas extraction system further comprises one or more flow control devices for controlling the flow of gas from the working space into the first secondary conduit, and thence into the primary outlet of the primary conduit. Methods for operating the apparatus, and a controller for controlling the apparatus and carrying out the methods, are also provided.

A shaft seal for an exhaust fan. The seal limits leakage from within an exhaust fan housing around an exhaust fan drive shaft that extends between a rotational power source exterior to the exhaust fan housing and a position within the exhaust fan housing. The seal comprises a plenum generally positioned about the exhaust fan drive shaft at the point where the shaft extends into the fan housing; an auxiliary blower comprising a housing, an internal blade driven by an auxiliary blower drive shaft, and an auxiliary blower drive to rotate the drive shaft where the auxiliary blower drive is operatively associated with the rotational power source such that operation of the rotational power sources causes a rotation of the exhaust fan drive shaft and the auxiliary blower drive shaft; and a duct fluidly connecting the auxiliary blower housing to the plenum.

A downdraft table for cleaning electronic equipment includes a housing in the form of a cabinet having a grid-like upper surface with openings therein. A fan located within the housing below the upper surface draws air from above the surface downwardly through the grid. An air compressor and compressed air storage tank are also located within the housing below the upper surface for producing a source of compressed air and a hose is connected to the compressed air storage tank and extends upwardly above the upper surface. An air nozzle connected to the hose allows a workman to direct compressed air toward a piece of electronic equipment located on the upper surface. The upper surface preferably includes a turntable that is adapted to support the piece of electronic equipment thereby allowing the equipment to be rotated about a vertical axis as it is being cleaned. In addition, a ground wire is connected to the housing and has a spring clip at the distal end thereof which is adapted to be connected to the piece of electronic equipment for grounding the same.