A pressurized tank is provided in which no air flows back from a piping for conveying powder to the pressurized tank. A pressurized tank (A) is used for a device (B) for intermittently feeding a predetermined amount of powder to a piping (7) for conveying the powder when the powder is conveyed in a plug flow through the piping (7) by means of compressed air. The tank (A) has a first pressurized room (6) that is a pressure vessel and that has a funnel-shaped upper partition (3) that has an opening and a funnel-shaped lower partition (4) that also has an opening, a first check valve (9) that is provided beneath the opening of the upper partition (3) of the first pressurized room (6) and is vertically moved so as to be upwardly moved by means of compressed air to close the opening of the upper partition (3), a second check valve (10) that is provided beneath the opening of the lower partition (4) of the first pressurized room (6) and is vertically moved so as to be upwardly moved by means of compressed air to close the opening of the lower partition (4), and an elastic body (24) to upwardly bias the second check valve (10).

A pressurized tank is provided in which no air flows back from a piping for conveying powder to the pressurized tank. A pressurized tank (A) is used for a device (B) for intermittently feeding a predetermined amount of powder to a piping (7) for conveying the powder when the powder is conveyed in a plug flow through the piping (7) by means of compressed air. The tank (A) has a first pressurized room (6) that is a pressure vessel and that has a funnel-shaped upper partition (3) that has an opening and a funnel-shaped lower partition (4) that also has an opening, a first check valve (9) that is provided beneath the opening of the upper partition (3) of the first pressurized room (6) and is vertically moved so as to be upwardly moved by means of compressed air to close the opening of the upper partition (3), a second check valve (10) that is provided beneath the opening of the lower partition (4) of the first pressurized room (6) and is vertically moved so as to be upwardly moved by means of compressed air to close the opening of the lower partition (4), and an elastic body (24) to upwardly bias the second check valve (10).

Methods for storing and moving adhesive particulate to an adhesive melter are disclosed. An interior space of a supply hopper is filled with adhesive particulate. A transfer pump is actuated to generate a vacuum at an inlet of the transfer pump to actuate removal of the adhesive particulate from the supply hopper. A consistent minimized depth of the adhesive particulate located directly above the inlet is maintained with a shroud located within the interior space of the supply hopper. In addition, adhesive particulate can be received in an interior space of a container. An open space is maintained within the interior space of the container proximate the pump inlet, where the open space entrains gas to be drawn by the transfer pump. The transfer pump can be actuated to generate a vacuum at the pump inlet to cause removal of the adhesive particulate from the container.

A gravimetric blender includes a vertical conduit, a vacuum pump having a suction inlet communicating with the interior of the conduit, a plurality of receivers connected to the conduit and vertically supported thereby with each receiver having a single tube therewithin extending from the resin material/vacuum drawn stream inlet to the connection of the receiver with the conduit.

Assemblies, apparatuses, systems, and method to extract or convey a material from a source of the material may include a vacuum generation and sound attenuation assembly to enhance conveyance the material from the source of the material. The vacuum generation and sound attenuation assembly may include a vacuum source including a plurality of vacuum generators. Each of the plurality of vacuum generators may be positioned to cause a vacuum flow between the source of the material and the vacuum generation and sound attenuation assembly. The vacuum generation and sound attenuation assembly may further include a sound attenuation chamber connected to the vacuum source. The sound attenuation chamber may include an attenuation housing at least partially defining a chamber interior volume being positioned to receive at least a portion of the vacuum flow from the vacuum source and attenuate sound generated by the vacuum source.

A powder-mixed-gas generator (20) includes a chamber (42) for containing powder (47) (the chamber being constituted of a vessel body (23) and a lid (24)), a gas injector (25) located within the chamber (42) for injecting a gas (54), and a mixture-gas discharger (26) for discharging a mixture gas (55) in which the gas and the powder (47) is mixed to the outside. The gas injector (25) injects the gas (54), thereby forming a circulation stream (52) that circulates inside the space (53). The mixture-gas discharger (26) has a mixture-gas suction port (49) for receiving the mixture gas (55). The mixture-gas suction port (49) has an opening that faces a direction in which the circulation stream (52) flows.

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.

Method for filling a waste container/separating device (50) of a pneumatic material conveying system, in which method material is conducted into a material container from a conveying pipe (100) via an inlet aperture (55) and in which method, for bringing about the suction/partial vacuum needed in conveying the material, the suction side of a partial-vacuum source (30) is connected to act in the container space of the waste container/separating device (50) and onwards into the conveying pipe (100). By changing the point at which the suction of the partial-vacuum source acts or the strength of its action in the container space (68) of the waste container/separating device (50), the input direction in the container space of the material (W) being conducted into the container space from the inlet aperture (55) is acted upon. The invention also relates to an apparatus and to a waste container/separating device.

Method for filling a waste container/separating device (50) of a pneumatic material conveying system, in which method material is conducted into a material container from a conveying pipe (100) via an inlet aperture (55) and in which method, for bringing about the suction/partial vacuum needed in conveying the material, the suction side of a partial-vacuum source (30) is connected to act in the container space of the waste container/separating device (50) and onwards into the conveying pipe (100). By changing the point at which the suction of the partial-vacuum source acts or the strength of its action in the container space (68) of the waste container/separating device (50), the input direction in the container space of the material (W) being conducted into the container space from the inlet aperture (55) is acted upon. The invention also relates to an apparatus and to a waste container/separating device.

A method and apparatus for transferring and handling material. Material is supplied into a separator device by a conveying pipe with an air flow from a partial-vacuum generator connected to a container space of the separator device, to a transporting pipe. The material is removed from the container space via an outlet opening to a press chamber. The material is transferred and compacted by a transferring member of a pressing device to a container space of a separate material container removably connected to the pressing device. The efficiency of movement of the material from the separator device container space to the press chamber and the material container is increased by connecting a suction side of the generator to the material container space via a suction pipe and a suction opening and by supplying replacement air to the separator device container space and/or to the press chamber.