US 2007/0175916 A1 · Method and Apparatus for Volumetric Dosing

Abstract

A method and an apparatus is proposed for volumetric dosing of a predetermined or selected dose of a product in the form of powdery material, a slurry, or a suspension (16) from a multiplicity of supply sources (18), using a multiplicity of dosing chambers (5), wherein at least one dosing chamber (5) is allocated to and in fluid communication with each supply source (18), and wherein one wall segment of each dosing chamber (5) is formed by a diaphragm (4), comprising the steps of selecting a desired supply source (18), displacing a diaphragm (4) from an initial position (8) providing a maximized volume of the dosing chamber (5) allocated to the selected supply source (18) towards a final position (17) in which the volume of the dosing chamber (5) is minimized, and thereby discharging the product (16) through an output (26), and refilling the dosing chamber (5) with product (16) from the respective supply source (18), thereby returning the diaphragm (4) into its initial position (8).

Claims29

Dependent claims

A method for volumetric dosing of a predetermined or selected dose of a product in the form of powdery material, a slurry, or a suspension from a multiplicity of supply sources, using a multiplicity of dosing chambers, wherein at least one dosing chamber is allocated to and in fluid communication with each supply source, and wherein one wall segment of each dosing chamber is formed by a diaphragm, comprising:

selecting a desired supply source,
displacing a diaphragm from an initial position providing a maximized volume of the dosing chamber allocated to the selected supply source towards a final position in which the volume of the dosing chamber is minimized, and thereby discharging the product through an output, and
refilling the dosing chamber with product (16) from the respective supply source, thereby returning the diaphragm to its initial position.

An apparatus for volumetric dosing of a predetermined or selected dose of a product in the form of a powdery material, a slurry, or a suspension from a multiplicity of supply sources, comprising:

at least one diaphragm pump per supply source,
wherein each diaphragm pump is divided by a diaphragm into a sealed dosing chamber and an actuation chamber opposite to the dosing chamber, each dosing chamber being in fluid communication with an outlet and one of the supply sources,
at least one source selector or selection of a desired supply source, and
means for displacing the diaphragm of the diaphragm pump allocated to the selected supply source, thereby ejecting an amount of product from the diaphragm pump in response to the displacement of the diaphragm,

1 more element

Dependencies are inferred from the claim text.

Method and Apparatus for Volumetric Dosing

Life of this patent

Method and Apparatus for Volumetric Dosing

Life of this patent

Abstract

Claims29