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1. WO2020113093 - ELECTROSTATIC SPRAY DRYING NOZZLE ASSEMBLY

Publication Number WO/2020/113093
Publication Date 04.06.2020
International Application No. PCT/US2019/063739
International Filing Date 27.11.2019
IPC
B05B 5/03 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
5Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
025Discharge apparatus, e.g. electrostatic spray guns
03characterised by the use of gas
B05B 5/043 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
5Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
025Discharge apparatus, e.g. electrostatic spray guns
043using induction-charging
B05B 7/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
7Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
02Spray pistols; Apparatus for discharge
06with one outlet orifice surrounding another approximately in the same plane
B05B 7/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
7Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
02Spray pistols; Apparatus for discharge
04with arrangements for mixing liquids or other fluent materials before discharge
B05B 7/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
7Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
02Spray pistols; Apparatus for discharge
08with separate outlet orifices, e.g. to form parallel jets, to form intersecting jets
CPC
B05B 15/18
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
15Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
14Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts
18for improving resistance to wear, e.g. inserts or coatings; for indicating wear; for handling or replacing worn parts
B05B 5/03
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
5Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
025Discharge apparatus, e.g. electrostatic spray guns
03characterised by the use of gas ; , e.g. electrostatically assisted pneumatic spraying
B05B 5/043
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
5Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
025Discharge apparatus, e.g. electrostatic spray guns
043using induction-charging
B05B 5/1608
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
5Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
16Arrangements for supplying liquids or other fluent material
1608the liquid or other fluent material being electrically conductive
B05B 7/045
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
7Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
02Spray pistols; Apparatus for discharge
04with arrangements for mixing liquids or other fluent materials before discharge
0416with arrangements for mixing one gas and one liquid
0441with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
045the gas and liquid flows being parallel just upstream the mixing chamber
B05B 7/0466
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
7Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
02Spray pistols; Apparatus for discharge
04with arrangements for mixing liquids or other fluent materials before discharge
0416with arrangements for mixing one gas and one liquid
0441with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
0466with means for deflecting the central liquid flow towards the peripheral gas flow
Applicants
  • SPRAYING SYSTEMS CO. [US]/[US]
Inventors
  • ACKERMAN, Thomas
  • WEE SIT, Lyndon
  • WEINSTEIN, Donald
  • HUFFMAN, Dave
Agents
  • SCHLEMMER, Dennis
Priority Data
62/773,87530.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ELECTROSTATIC SPRAY DRYING NOZZLE ASSEMBLY
(FR) ENSEMBLE BUSE DE SÉCHAGE PAR PULVÉRISATION ÉLECTROSTATIQUE
Abstract
(EN)
An electrostatic sprayer (10, 70) operable at high flow rates and low pressures particularly suitable for spray drying. The sprayer (10, 70) includes an elongated body (12) having a downstream spray nozzle assembly (14, 71) through which electrically charged liquid is directed via a central feed tube (18) within the nozzle body (12) and atomizing air is supplied via an annular passage (25) about the liquid feed tube (18). In one embodiment, the nozzle assembly is an external mix cluster head spray nozzle assembly (14) having a plurality of circumferentially spaced metallic spray tips (40). In another embodiment, the spray nozzle is an internal mix nozzle assembly *71) having a spray tip (71) with an internal mixing chamber (72a) for atomizing liquid prior to discharge.
(FR)
L'invention concerne un pulvérisateur électrostatique (10, 70) qui peut fonctionner à des débits élevés et à des pressions basses particulièrement appropriées pour le séchage par pulvérisation. Le pulvérisateur (10, 70) comprend un corps allongé (12) ayant un ensemble buse de pulvérisation aval (14, 71) à travers lequel un liquide chargé électriquement est dirigé par l'intermédiaire d'un tube d'alimentation central (18) à l'intérieur du corps de buse (12) et l'air d'atomisation est fourni par l'intermédiaire d'un passage annulaire (25) autour du tube d'alimentation en liquide (18). Dans un mode de réalisation, l'ensemble buse est un ensemble buse de pulvérisation de tête de grappe de mélange externe (14) ayant une pluralité de pointes de pulvérisation métalliques espacées sur la circonférence (40). Dans un autre mode de réalisation, la buse de pulvérisation est un ensemble buse de mélange interne (71) ayant une pointe de pulvérisation (71) comprenant une chambre de mélange interne (72a) pour pulvériser un liquide avant la décharge.
Latest bibliographic data on file with the International Bureau