Pouring batching device for fat-containing substances, in particular for chocolate

A pouring batching device for fat-containing substances, in particular for chocolate, in dies comprising:

• a case inside which at least one cylindrical recess is obtained, in which a longitudinal shaft is housed, to which at least one rotary piston is fastened;
• an element adapted to control the flow of the substance;
• wherein the case is placed below a tank containing the substance to be poured and is open towards its top, locating a hopper (8) adapted to put in contact an internal volume of the tank with the recess of the case, so that a mass of substance can easily descend by gravity inside the case, even without a sucking effect by the rotary piston;
• wherein the element adapted to control the flow of the substance, comprises:
• at least one valve, which is inserted into the cylindrical seat obtained in the case, the valve having a generally cylindrical shape, with a coaxial hole and at least one slot, with parallel flanks, each one of which locates a volume inside which the pistons slide;
• the rotary pistons, assembled on the shaft, inserted in the hole, obtained in the valve, and rotary with respect to it;
• the combined motion of the rotary pistons and of the valve changing the volume of a first and a second batching chamber, in order to dose the substance to be poured, and a movement of the valve opening and closing at least one pouring channel, to allow or block a flow of substance towards the dies below;
• wherein the pouring batching device further has channels adapted to recycle into the hopper the substance which passes through the unused pouring channels, the recycling occurring through ducts obtained in a plate assembled below the pouring batching device.