HIGH-FREQUENCY HYDRAULIC PULSATOR Russian patent published in 1995 - IPC

FIELD: manufacture of building materials. SUBSTANCE: pull-back hydraulic mechanism is made in the form of housing with a working cavity, a rotor and a working body. An actuator in the form of a hydraulic cylinder with a recurring spring is communicated with the pull-back mechanism by a discharge port. The pull-back mechanism is equipped with a multichannel hydraulic distributor and the even number of rollers-locking mechanisms. The working body is made as the even number of paddles interconnecting with the rollers-locking mechanisms. Channels communicating the working cavity with the hydraulic accumulator and with the make-up pump plant are made in the housing. EFFECT: enhanced quality of obtaining articles of loose materials. 6 cl, 5 dwg