Sliding-contact bearing for a centrifugal pump

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(11)

EP 1 201 931 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	08.06.2005 Bulletin 2005/23

(43)	Date of publication A2:
	02.05.2002 Bulletin 2002/18

(21)	Application number: 01204014.3

(22)	Date of filing: 22.10.2001

(51)	International Patent Classification (IPC)⁷: F04D 29/04

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
	Designated Extension States:
	AL LT LV MK RO SI

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Priority:

23.10.2000 IT MI002290

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

(72)	Inventor:
	Garibotti, Edoardo 19126 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)	Sliding-contact bearing for a centrifugal pump

(57) A protection device (20) for centrifugal pumps with a vertical axis, where the aforementioned pump comprises a case (5) containing a shaft (21), with the pump also comprising an impeller (3) connected to said shaft (21) and free to rotate inside said case (5). The device (20) comprises a first ring (1), mobile in rotation with the impeller (3) and a second ring (2), in a fixed position with respect to the case (5), in such a way that the sliding contact between the aforementioned first and second ring (1, 2) allows the dry operation of the centrifugal pump.

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