Device of the magnetically-controlled valve type comprising control by a link rod

The present invention relates to a valve capable of being used especially in radioactive-fluid circuits of nuclear power stations. The valve comprises a body 10 into which emerge two conduits 11, 12 capable of communicating between them, as well as a cap 20 which houses a shut-off 30 and the members 40 for moving the shut-off. The latter comprise at least one permanent magnet rotationally moved by virtue of an external part. The control members 40 comprise two toothed wheels 41, 42 of rotational axes perpendicular to the direction of movement of the shut-off 30. The smaller of the toothed wheels 41 is functionally securely fixed to the said permanent magnet. The large toothed wheel 42 carries, in an eccentric position, a first end 46 of a link rod 45 of which the second end 47 is linked to a valve element 30 forming a shut-off. LA PRESENTE INVENTION CONCERNE UN ROBINET SUSCEPTIBLE D'ETRE UTILISE NOTAMMENT DANS DES CIRCUITS DE FLUIDES RADIO-ACTIFS DES CENTRALES NUCLEAIRES. LE ROBINET COMPREND UN CORPS 10 DANS LEQUEL DEBOUCHENT DEUX CONDUITS 11, 12 SUSCEPTIBLES DE COMMUNIQUER ENTRE EUX, AINSI QU'UN CHAPEAU 20 QUI LOGE UN OBTURATEUR 30 ET DES ORGANES 40 DE DEPLACEMENT DE L'OBTURATEUR. CES DERNIERS COMPRENNENT AU MOINS UN AIMANT PERMANENT DEPLACE EN ROTATION GRACE A UNE PIECE EXTERIEURE. LES ORGANES DE COMMANDE 40 COMPRENNENT DEUX ROUES DENTEES 41, 42, D'AXES DE ROTATION PERPENDICULAIRES A LA DIRECTION DE DEPLACEMENT DE L'OBTURATEUR 30. LA PLUS PETITE DES ROUES DENTEES 41 EST SOLIDAIRE FONCTIONNELLEMENT DUDIT AIMANT PERMANENT. LA GRANDE ROUE DENTEE 42 PORTE, EN POSITION EXCENTREE, UNE PREMIERE EXTREMITE 46 D'UNE BIELLE 45 DONT LA SECONDE EXTREMITE 47 EST RELIEE A UN CLAPET 30 FORMANT OBTURATEUR.