(19)
(11) EP 0 244 764 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.09.1989 Bulletin 1989/39

(43) Date of publication A2:
11.11.1987 Bulletin 1987/46

(21) Application number: 87106288.1

(22) Date of filing: 30.04.1987
(51) International Patent Classification (IPC)4: B24B 31/12, B24B 57/02
(84) Designated Contracting States:
AT CH DE ES FR GB LI SE

(30) Priority: 05.05.1986 IT 2030986
24.03.1987 IT 1981687

(71) Applicant: Polenghi, Roberto
I-20143 Milano (IT)

(72) Inventor:
  • Polenghi, Roberto
    I-20143 Milano (IT)

(74) Representative: Petruzzelli, Antonio European Patent Attorney 
C.so Italia, No. 43
20122 Milano
20122 Milano (IT)


(56) References cited: : 
   
       


    (54) Method and device for feeding a cleaning solution with suspended abrasive substances, into work-piece finishing machine


    (57) A method and a device for the feeding of a cleaning solution with suspended powdered abrasive substances, into work-piece finishing machines.
    The finishing tank (11) of the machine is connected by a closed circuit with a recycling tank (19) which includes a stirring device (28) to keep a powdered abrasive substance suspended in a cleaning solution which is constantly fed into the finishing tank (11) by a pump (29). A second recycling circuit (40, 42) is used to remove the detergent from special containers (41) with a strong flow of liquid drawn from the recycling tank (19) which is then returned into the stirring area (28).






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