EP 0325381 A2 19890726 - Spray dampener valve assembly and control system.
Title (en)
Spray dampener valve assembly and control system.
Title (de)
Befeuchtungssprühdüsenanordnung und Kontrollsystem.
Title (fr)
Dispositif de mouillage à valves de pulvérisation et système de commande.
Publication
Application
Priority
- US 14532388 A 19880119
- US 14532788 A 19880119
Abstract (en)
A sprayer assembly (32) for a printing press dampener roll (16) comprises a plurality of sprayers (18), each including a nozzle section (38) and a valve section (40). The nozzle section (38) includes a nozzle housing (42) having a nozzle element (46) at its front end defining a spray outlet (54), and a valve seat (50) inserted into its rear end. The valve section (40) includes a plunger (104) reciprocably mounted in a solenoid (96), and a valve stem (110) mounted frictionally in a front end of the plunger (104) for engaging the valve seat (50). The valve stem (110) can be replaced by removing the valve section (40) and pulling the stem (110) out of the plunger (104). The sprayers (18) are controlled to emit fluid in pulses. During low press speeds, fluid output is adjusted by varying the interval between pulses (P). During high speed operation, fluid output is adjusted by varying the pulse time (t). Furthermore, the outermost nozzles (N1, N8) of a spray bar (440) are operated by dedicated control channels to permit better spray patterns.
IPC 1-7
IPC 8 full level
B05B 1/32 (2006.01); B05B 12/08 (2006.01); B05C 11/10 (2006.01); B41F 7/30 (2006.01); B41F 33/00 (2006.01)
CPC (source: EP)
B41F 7/30 (2013.01); B41F 33/00 (2013.01)
Designated contracting state (EPC)
BE DE ES FR GB NL SE
DOCDB simple family (publication)
EP 0325381 A2 19890726; EP 0325381 A3 19901107; EP 0325381 B1 19951004; AU 2856289 A 19890720; CA 1313388 C 19930202; DE 68924433 D1 19951109; DE 68924433 T2 19960509; JP 2746975 B2 19980506; JP H026863 A 19900111; NZ 227640 A 19910226
DOCDB simple family (application)
EP 89300326 A 19890113; AU 2856289 A 19890118; CA 587942 A 19890111; DE 68924433 T 19890113; JP 963589 A 19890118; NZ 22764089 A 19890117