Abstract:
In a spray drying apparatus,comprising in a usual manner a drying chamber, an air disperser, and at least one pressure nozzle arrangement (4), means are provided for emptying the feed in the nozzle arrangement(s) (4) after the supply of feed from a feed system (5) is halted and before the nozzle arrangement(s) (4) are removed from the drying chamber and positioned in a cleaning system (7). The emptying takes place while maintaining atomization in the nozzle arrangement (4). The feed emptying system (6) comprises a pump (60), a pressurized air/gas source (61) and a conduit (62), and the spray drying apparatus at least one valve (45, 53, 63, 64, 65, 66) allowing switching from the feed system (5) to the feed emptying system (6).
Abstract:
The nozzle (1) for cleaning-in-place of a vessel hasa nozzle body (2) adapted to be connected to a wall of the vessel and defining an opening (3), anozzle insert (10) is contained within the nozzle body(2) and is ableto assume at least two distinct positions relative to the nozzle body (2). Thus, in a first position, the nozzle insert (10) is retracted into the nozzle body (2) and a front end of the nozzle insert is substantially flush with a front end of the nozzle body (2) at the opening (3) thereof.In a second position, the nozzle insert (10) is advanced in theaxial direction relative to the nozzle body (2) and protrudes, in the mounted position, into the vessel. Aplurality of apertures (12) is exposed in the second positionto allow distribution of a cleaning fluid.The nozzle insert (10) comprises at least two nozzle insert parts(15, 25), and thenozzle insert parts(15, 25)are in mutual abutment in the first position and spaced from each other in a direction transverse to theaxial direction in the second position to form at least one gap (20) between adjacent nozzle insert parts, said apertures (12) being exposed in said gap(20). (Fig. 5)
Abstract:
The air disperser (1) for a spray dryer is provided with a centre (3) having a longitudinal axis defining an axial direction (a) and a radial direction (r). A wall (4) defines a space together with the centre (3), and a plurality of guide vanes (5) is provided in the space. An adjustment device (6, 7, 8) is provided for adjustment of the angular position of the guide vanes (5) about an axis parallel to the radial direction (r), and the adjustment device includes remote operating means, which may include a lever (6) extending from a position outside a duct wall (2) through a part-circumferential slit (7) in the wall (2). The lever (6) may be adapted to be actuated to transfer a rotating movement about the radially extending axis to each of the guide vanes (5) by movement of the lever (6) in the slit (7).
Abstract:
In a spray drying apparatus, comprising in a usual manner a drying chamber, an air disperser, and at least one pressure nozzle arrangement (4), means are provided for emptying the feed in the nozzle arrangement(s) (4) after the supply of feed from a feed system (5) is halted and before the nozzle arrangement(s) (4) are removed from the drying chamber and positioned in a cleaning system (7). The emptying takes place while maintaining atomization in the nozzle arrangement (4). The feed emptying system (6) comprises a pump (60), a pressurized air/gas source (61) and a conduit (62), and the spray drying apparatus at least one valve (45, 53, 63, 64, 65, 66) allowing switching from the feed system (5) to the feed emptying system (6).
Abstract:
The air disperser (1) for a spray dryer is provided with a centre (3) having a longitudinal axis defining an axial direction (a) and a radial direction (r). A wall (4) defines a space together with the centre (3), and a plurality of guide vanes (5) is provided in the space. An adjustment device (6, 7, 8) is provided for adjustment of the angular position of the guide vanes (5) about an axis parallel to the radial direction (r), and the adjustment device includes remote operating means, which may include a lever (6) extending from a position outside a duct wall (2) through a part-circumferential slit (7) in the wall (2). The lever (6) may be adapted to be actuated to transfer a rotating movement about the radially extending axis to each of the guide vanes (5) by movement of the lever (6) in the slit (7).
Abstract:
A nozzle for cleaning-in-place of a vessel has a nozzle body to be connected to a wall of the vessel and defining an opening, a nozzle insert is contained within the nozzle body and is able to assume at least two distinct positions relative to the nozzle body, a first position in which the nozzle insert is retracted into the nozzle body and a second position in which the nozzle insert is advanced in the axial direction relative to the nozzle body and protrudes into the vessel. Apertures are exposed in the second position to allow distribution of a cleaning fluid. The nozzle insert has two nozzle insert parts, in mutual abutment in the first position and spaced from each other in a direction transverse to the axial direction in the second position to form a gap between adjacent nozzle insert parts, the apertures being exposed in the gap.
Abstract:
A nozzle for cleaning-in-place of a vessel has a nozzle body to be connected to a wall of the vessel and defining an opening, a nozzle insert is contained within the nozzle body and is able to assume at least two distinct positions relative to the nozzle body, a first position in which the nozzle insert is retracted into the nozzle body and a second position in which the nozzle insert is advanced in the axial direction relative to the nozzle body and protrudes into the vessel. Apertures are exposed in the second position to allow distribution of a cleaning fluid. The nozzle insert has two nozzle insert parts, in mutual abutment in the first position and spaced from each other in a direction transverse to the axial direction in the second position to form a gap between adjacent nozzle insert parts, the apertures being exposed in the gap.