WATER HAMMER GENERATOR Russian patent published in 1995 - IPC

FIELD: hydraulics. SUBSTANCE: cover of housing is provided with a gasket having a plug and has cylindrical part with a slot wherein a stud-bolt is freely mounted. The stud-bolt is rigidly coupled with the rod of the valve and prevents it against rotation. The additional cover is coupled with the base. The cylindrical shell serves as a housing for the driving mechanism. The rod of the valve passes through main cover and gasket and is provided with a spider at its end. The spider has hub and rollers mounted at the ends of the spider. The spring is mounted between the face of the plug and the hub for permitting pressing the spider to the contact surface of the cam. The shaft of the cam passes through the additional cover, is set in a bearing, and is fixed against axial movement by a distance bushing and additional cover. The contact working surface of the cam has a recess for rollers to close the valve and ports with spherical surfaces wherein two symmetrical extensible plates are housed. The plates are pressed by flat springs mounted from the side of the contact surface of the cam. The surface of the cam, which is opposite to the contact surface, is in contact with the additional rollers mounted on the stands in the additional cover for permitting movement exerted by nuts. EFFECT: improved design. 5 cl, 3 dwg