LOOSE AND SMALL-SIZE PRODUCTS WEIGHING MACHINE Russian patent published in 2003 - IPC

FIELD: food industry. SUBSTANCE: invention relates to devices for weighing loose and small-size products, for instance, groats, short cut macaroni foods, pastries, etc. Said device has U-shaped vibrating chutes of coarse and fine weighing arranged at different levels and limited in longitudinal direction by vertical walls. Each chute is furnished with weigher, and controllable gate installed at outlet. Device has also intermediate chute whose outlet is located over fine weighing vibrating chute. Products are fed to coarse weighing chute which is divided, for instance, by longitudinal partition into narrow and wide channels. Product from narrow channel gets either on wide channel or, along intermediate chute, on fine weighing vibrating chute, depending on position of gate. With product moving along narrow channel, regulated flow is formed required for high accuracy metering out of product in fine weighing vibrating chute. First weigher secured on coarse weighing vibrating chute is filled with product from wide channel. As definite preset weight is obtained, weigher opens and product gets onto fine weighting vibrating chute where metered out amount is corrected to required value, and at the same time upper weigher is being filled with new portion of product. So, continuous weighing process is maintained: main part of product gets into upper weigher and smaller (accurate) part gets into lower weigher. Both weighers operate continuously and simultaneously. EFFECT: enlarged operating capabilities. 6 cl, 3 dwg