(19)
(11) EP 1 092 877 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.05.2001 Bulletin 2001/20

(43) Date of publication A2:
18.04.2001 Bulletin 2001/16

(21) Application number: 00203553.3

(22) Date of filing: 12.10.2000
(51) International Patent Classification (IPC)7: F04D 29/62, F04D 29/16, F04D 29/42
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 15.10.1999 IT MI990626 U

(71) Applicant: TM.P. S.p.A. Termomeccanica Pompe
19126 La Spezia (IT)

(72) Inventor:
  • Garibotti, Edoardo
    19020 Sesta Godano (La Spezia) (IT)

(74) Representative: De Gregori, Antonella et al
Ing. Barzano & Zanardo Milano S.p.A. Via Borgonuovo 10
20121 Milano
20121 Milano (IT)

   


(54) Balanced pump with suction and delivery on the same axis


(57) A simple to disassemble balanced pump with suction and delivery on the same axis comprising a shell (12), containing an impeller (24) connected to which is a drive mechanism (16), the shell provided on one side with a suction port (19) and on the other side with a delivery port (20) located on the same axis, in which the shell (12) has a cover (18) that can be freely removed from below, the shell being designed raised on a part thereof open at the side, the impeller (24) also fitted with further wear rings (31, 54) facing outwards on radial surfaces that collaborate with other wear rings (32, 51) integral to the shell and/or lower cover (18); in said pump free perimetric ends of the lower wear rings (54, 51) are partially covered and enclosed by a shaped fixed ring (56, 57) that establishes a labyrinth passage for a pumped fluid.






Search report