DEVICE FOR CONCRETE MIXTURE CONTINUOUS TREATMENT Russian patent published in 2004 - IPC

FIELD: building industry, particularly for concrete mixture treatment before pouring thereof into forms during cast-in-place or mixed structure building. SUBSTANCE: device has loading hopper, vertical heating chamber of round cross-section elastically and hermetically connected with loading hopper. Vibrators and unloading means are fixed from heating chamber outside. Unloading means comprises funnel having diameter in upper part thereof corresponding to heating chamber tube diameter and gate including two flaps located at an angle of more than 45^o to vertical plane. Flaps may reciprocate by drive secured to unloading device. Heating chamber comprises electrically-insulated straight electrodes arranged into heating chamber and connected to three-phase alternating-current circuit. Electrodes have triangular cross-sections so that sum of inside angle of electrode vertexes directed to center thereof is equal to 360^o. Device has inclined tube connected to lover edge of unloading device funnel through vertical connection pipe. Detachable dielectric rod is coaxially installed into inclined tube such that rod is secured into vertical connection pipe area in cantilever manner. Annular electrodes are joined to dielectric rod and flush with rod surface. Annular electrodes are linked to alternating-current circuit phases independently of vertical heating chamber electrodes connection. Inclined tube body is fastened to solidly-grounded neutral of electricity supply network. Mechanism for flaps opening and closing synchronization is arranged on inclined tube body. Relation between dielectric rod diameter d and inner diameter D of inclined tube rod is within the limits of d:D = 1:2.0 ; 1:2.5. Square of current-collection electrodes in inclined tube is 20% - 30% from square of vertical heating chamber electrodes. Device has two temperature sensors. One temperature sensor is located at lower area of vertical heating chamber electrodes. Another temperature sensor is fixed to dielectric rod end in inclined tube into gate area. EFFECT: increased stability of treatment process, increased accuracy of setting treatment parameters in accordance with mixture heating temperature, efficiency and capacity, enhanced heating uniformity of concrete mixture, improved operational capability and serviceability. 3 cl, 1 dwg