Blending scale

  • US 8,974,109 B2
  • Filed: 02/18/2011
  • Issued: 03/10/2015
  • Est. Priority Date: 07/28/2010
  • Status: Active Grant
First Claim
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1. A blending scale for dosing and blending a main product and an auxiliary product comprising:

  • a main product feeding system;

    an auxiliary product dosing device comprising an auxiliary product feeding hopper and a measuring device including an auxiliary product container with discharge doors, the auxiliary product feeding hopper supplying the auxiliary product container with the auxiliary product and the measuring device weighing a quantity of the auxiliary product contained in the auxiliary product container to obtain a value indicative of a weight of the quantity of the auxiliary product, the discharge doors of the auxiliary product container being configurable in an open configuration for releasing the weighed quantity of the auxiliary product;

    an auxiliary product dispenser receiving the auxiliary product from the auxiliary product dosing device and releasing the auxiliary product;

    a blend collector comprising a single weigh pan with discharge doors configurable in a closed configuration and an open configuration, said weigh pan being suspended by loadcells, the blend collector with the discharge doors configured in the closed configuration receiving the auxiliary product released from the auxiliary product dispenser and a quantity of the main product from the main product feeding system and weighing a blend of the auxiliary and main products; and

    a controller operatively connected to the auxiliary product dosing device and the blend collector for recording and tracking the weight obtained by the auxiliary product dosing device with the discharge doors of the auxiliary product container configured in the closed configuration and the weight of the blend of the auxiliary and main products weighed by the blend collector with the discharge doors configured in the closed configuration, the controller also controlling the configuration of the discharge doors of the auxiliary product container and the blend collector between the open configuration and the closed configuration to release of the main and auxiliary products, based on the weight of the auxiliary product weighed by the auxiliary product dosing device, and terminating the release of the main product from the main product feeding system once a targeted quantity of the blend weighed by the blend collector is obtained.

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