Seal for pressurized equipments through which the material to be treated is conveyed

(19)

(11)

EP 1 325 974 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	19.11.2003 Bulletin 2003/47

(43)	Date of publication A2:
	09.07.2003 Bulletin 2003/28

(21)	Application number: 02022385.5

(22)	Date of filing: 09.10.2002

(51)	International Patent Classification (IPC)⁷: D06B 23/18

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

(30)

Priority:

10.10.2001 IT FI20010188

(71)	Applicant: C.M.T. s.r.l. Costruzione Macchine Tessili
	36015 Schio (VI) (IT)

(72)	Inventors:
	Maltagliati, Marco Mauro 50134 Firenze (IT) Becherini, Enrico 59100 Prato (IT)

(74)	Representative: Terreran, Gabrio
	Contrada Porta Santa Lucia, 48 36100 Vicenza 36100 Vicenza (IT)

(54)	Seal for pressurized equipments through which the material to be treated is conveyed

(57) The entry f1 into the pressure treatment space (11) of the equipment and the exit f3 therefrom consist of ducts (13,15), each duct having an intermediate portion (13A, 15A) of high hydraulic resistance; in points (25, 25A) between said intermediate portion and the treatment space (11) a liquid is introduced under the same or slightly higher pressure than that existing in the treatment space (11); the liquid under pressure prevents the aeriform substance from exiting the treatment space (11), whereas the flow of said liquid towards the outside is limited by the intermediate portion (13A; 15A).

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