Abstract:
A portable air abrasion device 10 has a dispensing chamber 12 and a flow valve 14 for controlling the flow rate from the dispensing chamber 12. The flow valve 14 includes a fluid flow chamber 40 for receiving granular materials exiting the dispensing chamber 12. The fluid flow chamber 40 has a granular materials inlet port 44, a fluid flow inlet port 46 for receiving the flow of a fluid to the fluid flow chamber 40 and a fluidized granular material exit port 48 for dispensing a fluidized mixture of the granular material away from the fluid flow chamber 40. The fluid flow chamber 40 also has a flow regulator 50 employing a lead screw 52 to control the flow of fluidized granular material through the fluidized granular material exit port 48.
Abstract:
A hot melt dispensing system including a container for storing adhesive pellets, a feed system for transporting adhesive pellets from the container, and a blower. The blower is positioned with respect to an inlet of the feed system for applying a flow of air for agitating the adhesive pellets and moving the adhesive pellets toward the inlet.
Abstract:
A micro particle flow facilitator 10, includes: (a) a bourdon tube 12 having a flexible duct 16 capable of expanding and contracting in response to pulsations of a pressurized fluid, the duct 16 being hollow, closed-ended and having an inlet port 18; and (b) a fluid pulsator 14 for providing the pulsations of a pressurized fluid to the inlet port 18 of the bourdon tube 12, the pulsator 14 being in fluid-tight communication with the inlet port 18 of the bourdon tube 12 and having a fluid inlet port 18 for connection to a source of pressurized fluid.
Abstract:
In order to ensure a momentary transport upwards of granulate from a granulation tank (1) by means of liquid and air, a suitably mainly horizontal ejector (10) is located under the tank. The ejector (10) has a side inlet (11) for granulate, an end (12) with an inlet (13) suitably formed as a spray nozzle for pressurized transport liquid, and a second end (15) with an inlet (16) for pressurized gas and downstream from there an outlet (18) shaped as a spray nozzle for a three-phase flow of liquid, granulate, and gas. A mainly vertical first conduit (6) has its lower end connected with the outlet (18) of the ejector for further transport upwards of the three-phase flow with expansion of the air and acceleration of the granulate and liquid. The ejector (10) comprises a replaceable tubular ejector housing (21) that is provided with an internal wear liner (22) and an outlet (18) that is shaped as a spray nozzle consisting of a durable material and is also replaceable. The inlet (10) for pressurized gas preferably comprises a ring-shaped chamber (19) that surrounds the periphery of tubular ejector (10) and is connected with the inside of the ejector (10) through a ring-shaped slit (20) that directs the pressurized gas towards the outlet (18) of the ejector.
Abstract:
Die vorliegende Erfindung betrifft eine Pulverfördervorrichtung (100), insbesondere für Beschichtungspulver. Die Pulverfördervorrichtung (100) umfasst eine Pulverdichtstrompumpe (1), welche mindestens eine Förderkammer (4) mit einem Pulvereinlassventil (7) und einem Pulverauslassventil (8) aufweist. Es ist ferner eine Steuereinrichtung (90) vorgesehen zum wahlweisen Betreiben der Pulverdichtstrompumpe (1) in einem Pulverförder-Betriebsmodus oder einem Spül-Betriebsmodus. Das Pulvereinlassventil (7) und das Pulverauslassventil (8) der Pulverdichtstrompumpe (1) sind jeweils als ein pneumatisch betätigbares Quetschventil ausgeführt, welches bei Anlegen eines Betätigungsdruckes verschließbar ist. Erfindungsgemäß ist vorgesehen, dass die Steuereinrichtung (90) ausgebildet ist, den Druckwert des zum Verschließen des Pulvereinlassventils (7) und/oder Pulverauslassventils (8) gewählten Betätigungsdruckes vorzugsweise automatisch und noch bevorzugter wahlweise automatisch in Abhängigkeit von dem jeweiligen Betriebsmodus der Pulverdichtstrompumpe (1) und/oder in Abhängigkeit von einem in der Förderkammer (4) herrschenden Druck einzustellen.
Abstract:
A transportation system for use in a unit for making filters for smoking articles comprises a reservoir (1) for holding a plurality of solid objects. The reservoir (1) has an outlet (6) for the discharge of the solid objects from the reservoir (1), and a transportation duct (2) for transporting the solid objects discharged from the reservoir (1) to an object receiving unit. The transportation system further comprises a gas supply for providing a gas stream through the transportation duct (2), a Venturi nozzle (4) arranged in the transportation duct (2) and a release mechanism (9) arranged downstream of the Venturi nozzle(4). The Venturi nozzle (4) is in communication with the outlet (6) of the reservoir (1), such that upon operation of the gas supply solid objects are drawn from the outlet (6) of the reservoir (1) through the Venturi nozzle (4) into the transportation duct (2). The release mechanism (9) is provided for releasing pressure from the transportation duct (2).
Abstract:
The invention relates to a device (110) for pneumatically conveying powder (42), the device having an injector (111) with a conveying gas connection (93) and a metering gas connection (94) as well as a powder intake channel (100) connected in terms of flow to the injector (111). To achieve the effect that the powder conveying device (110) can be effectively flushed through in the cleaning mode of said device, it is provided according to the invention that a purging gas connection (91), which is connected or can be connected to a purging gas line (103), is provided between the negative pressure region of the injector (111) and the powder intake opening (36) of the powder intake channel (100) for the feeding, as and when required, of purging gas, in particular compressed purging air. Furthermore, a shut-off element (92) is assigned to the purging gas connection (91) to prevent purging gas from being able to escape from the powder output opening (36) of the powder intake channel (100).