Powder feed rate control system that includes a hopper adapted to contain a powder and to maintain a hopper pressure. A carrier conduit delivers a carrier gas flow and having an orifice. The carrier gas flow conveys powder entering through the orifice at a powder feed rate. A differential pressure transducer includes a first pressure input associated with the hopper pressure and a second pressure input associated with the carrier gas flow downstream of the hopper. The differential pressure transducer (PT) outputs a signal related to a differential pressure between the first pressure input and the second pressure input. An electro pneumatic regulator (EP) is adapted to communicate with a control and receiving the signal related to the differential pressure.

A loose-fill granular insulation blowing machine includes a main body having an internal frame and a hopper chamber that is positioned along the top end of the main body. A grate is positioned beneath the hopper and a dispensing chamber is located along the bottom end of the main body. A funnel section is interposed between the grate and the dispensing chamber, and a valve is positioned along the bottom of the funnel. An agitator having a motorized central shaft and a plurality of paddles is positioned within the dispenser chamber. A blower having an inlet is positioned along one side of the dispenser chamber and an outlet is positioned along the opposite side of the dispenser chamber. A plurality of air diffusers are positioned within the dispenser chamber. Each of the diffusers are in communication with an air coupler that is removably secured to an air compressor.

A feeding unit for a powdering station of powder coating product including a fluidized coating product reservoir, a support for receiving a coating product container, a pump for feeding the reservoir from the container and a casing, which defines an internal volume for receiving the reservoir and which is provided with an opening for access to the internal volume. The support is movable in rotation or circular translation about at least one axis of rotation, in both directions, between a first loading/unloading position, in which the support projects outside the internal volume of the casing, through the access opening, and a second coating product transfer position, wherein the support and a container in place on the support are included in this internal volume.

A reactive hopper assembly for feeding a low pressure cold spray applicator for applying powder coatings is disclosed. A powder feed cartridge provides powder feed to a reaction chamber. An impeller housing is interconnected with the reaction chamber for receiving powder feed from the reaction chamber for metering powder feed received from the reaction chamber. A hopper vessel receives metered powder feed from the impeller housing for providing powder to the low pressure cold spray applicator. The reaction chamber is fluidly connected to a source of a reactive gas for chemically modifying the powder feed for in situ reducing surface oxidation of the powder feed.

A powder conveying device for the conveying of coating powder to a powder applicator includes a working container that is designed and operable appropriately such that it can be pressurized. The working container further includes a powder inlet and a powder outlet, whereby the powder outlet is connected to a powder outlet valve. In addition, a powder conduit is provided that is connected, on the inlet side, to the powder outlet valve and includes, on the inlet side, an inlet for transport air. The powder conduit can be connected, on the outlet side, to a powder applicator. Moreover, a control is provided that is designed and operable appropriately such that it controls the amount of powder to be conveyed by repeatedly opening and closing the powder outlet valve.

The feed rate of a supported particulate catalyst through a unit body rotary disc catalyst feeder may be controlled by controlling the feed of nitrogen to the upper surface of the rotary disc.

A multi-component electro-mechanical flame spray deposition system is disclosed having a first electro-mechanical feeder and a second electro-mechanical feeder, each in communication with a mixing hopper, and wherein the mixing hopper is in communication with a powder nozzle having an orifice, and a combustion torch having an orifice, wherein the orifice of the powder nozzle is in juxtaposition to the orifice of the combustion torch. A method of using the multi-component electro-mechanical flame spray deposition system is provided for depositing substrates on or to articles of manufacture.

A method of removing material from a surface of a workpiece includes discharging a flow of fluid towards a workpiece at a pressure and a flow rate that facilitates forming a plurality of cavitation bubbles, and introducing abrasive media. The method includes exciting the abrasive media with the cavitation bubbles, removing material from the workpiece by an interaction between the cavitation bubbles and the abrasive media, and the surface of the workpiece.

A method and a dense phase powder pump for conveying coating powder from a first powder reservoir to a second downstream powder reservoir or to a downstream powder spray-coating gun or the like installation for spraying coating powder are disclosed. In order to reduce the number of components of the dense phase powder pump that require maintenance, the dense phase powder pump is designed as a single-chamber dense phase powder pump and has only a single powder conveyor chamber for conveying coating powder.

A powder feeder for a cold spray system includes a rotatable drum body, a housing surrounding the drum body, and a support structure. The support structure couples to the housing and supports the housing such that the drum body rotates about a rotation axis to provide in-situ blending of powder disposed within an interior of the drum body.