A method of reducing silicosis caused by inhalation of silica-containing proppant, such as silica sand and resin-coated silica sand, and apparatus therefor. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. 1.72(b). As stated in 37 C.F.R. 1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading Abstract of the Disclosure. The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

The present invention provides an exhaust gas discharge device for a fire engine in a fire station, the device comprising: a base frame inserted into a guide groove formed on the floor of the garage of the fire station; a lifting frame connected to the upper part of the base frame to slide in a vertical direction; a suction hood having a suction hole on one side while having a container shape including a space unit inside thereof; a discharge pipe unit for guiding the exhaust gas of the fire engine in the garage to be discharged to the outside of the garage; a discharge fan for generating a suction force for the exhaust gas to be discharged to the outside of the garage through the discharge pipe unit; a lifting means for generating a driving force to slide the lifting frame in the vertical direction; a rotation connection member for enabling the suction hole of the suction hood to face an exhaust port of the fire engine while the suction hood rotates around the hinge when the lifting frame ascends by the lifting means; a stopper for stopping a wheel of the fire engine when the fire engine stops while the exhaust port of the fire engine is adjacent to the front side of the upper part of the suction hood; a stop sensor for detecting whether the stopper of the fire engine is stopped; a vehicle sensor detecting whether the fire engine enters the direction of the stopper unit; and a control unit for controlling the operation of the lifting means and the discharge fan in accordance with a signal of the vehicle sensor and the stop sensor or controlling the operation of the lifting means and the discharge fan by a user regardless of the signal of the stop sensor and the vehicle sensor.

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 robust cleaning and ventilation system for a workstation such as an office workspace, employing table geometry to create high efficiency air exchange while providing a conditioned make-up air return that completes the full ventilation process. The workstation includes a modular implementation such that the necessary equipment is not a single custom bespoke installation and can be used universally.

A control system integrated into an industrial dust collector. The system has at least one programmable processing unit that communicates with a plurality of sensors located in the dust collector to provide data of the collector's behavior with feedback allowing real-time modifications to the operating parameters defined during the design. Additionally, a service-life prediction element of used-filters based on a reference chart is included.

An intake manifold for an additive manufacturing system includes a body defining a flow channel therein. The body includes an inlet end defining an inlet configured to intake gas and/or particles from a build area of the additive manufacturing system, and an outlet end defining an outlet that is fluidly connected to the inlet through the flow channel. The outlet is configured to be in fluid communication with an uptake manifold of the additive manufacturing system. The intake manifold also includes at least one mount extending from the outlet end of the body that is configured to rotatably mount the body to the uptake manifold.

A connector system includes an adaptor with a magnetic target surface, and a nozzle that is configured to be connected to the magnetic target surface of the adaptor by a magnetic coupling. The nozzle has a housing having an inlet end and an outlet end, and a throughgoing channel having an axial extension therebetween. The housing includes one or more magnets that are arranged at the inlet end and configured to direct or indirect engage the magnetic target surface in a condition when the nozzle is connected to the adaptor. Further, the housing includes one or more air vents that are arranged at the outlet end and which have an axial extension being radially displaced in view of the axial extension of the throughgoing channel.

An intake manifold for an additive manufacturing system includes a body defining a flow channel therein. The body includes an inlet end defining an inlet configured to intake gas and/or particles from a build area of the additive manufacturing system, and an outlet end defining an outlet that is fluidly connected to the inlet through the flow channel. The outlet is configured to be in fluid communication with an uptake manifold of the additive manufacturing system. The intake manifold also includes at least one mount extending from the outlet end of the body that is configured to rotatably mount the body to the uptake manifold.

A connector system includes an adaptor with a magnetic target surface, and a nozzle that is configured to be connected to the magnetic target surface of the adaptor by a magnetic coupling. The nozzle has a housing having an inlet end and an outlet end, and a throughgoing channel having an axial extension therebetween. The housing includes one or more magnets that are arranged at the inlet end and configured to direct or indirect engage the magnetic target surface in a condition when the nozzle is connected to the adaptor. Further, the housing includes one or more air vents that are arranged at the outlet end and which have an axial extension being radially displaced in view of the axial extension of the throughgoing channel.

A high volume dust collector that is adapted and configured to reduce time associated with routine cleaning of an industrial tissue-machine and factory. The dust collector has a body, having an intake positioned to draw large volumes of air and dust from any area where dust is known to accumulate when engaged. The intake is taller than it is wide and is fitted with a grill to prevent larger maculature from clogging the system. An outlet on each collector connects to a fan or blower and sends collected dust to filtration system. An access hatch is positioned on the body of the collector to allow an operator to manually clear any clogs, should they occur.