Method and device to determine delivery rate or mass flow rate of material conveyed by a high density liquid piston pump
AssigneePutzmeister Aktiengesellschaft
InventorWolfgang Zey
Life of this patent
Estimating the term…
Abstract
The invention relates to a device and a method to determine the delivery rate or mass flow rate of material conveyed by a high density liquid piston pump (10) through a delivery line (24). The exact determination of the above mentioned variables is achieved by mounting the delivery cylinder (1) in a housing (30) with radial and axial slack and suspending it on at least one weighing cell (36) forming one piece with the housing.
Claims16
A device for determining the delivery rate or the mass flow rate of a material conveyed through a delivery conduit (24) by a high-density piston pump (10), the device comprising:
- at least one conveyance cylinder (12) having a load end and a drive end;
- at least one conveyance piston (20) axially slidable in said conveyance cylinder (12);
- a housing (30) provided around said at least one conveyance cylinder (12);
- and at least one weighing cell (36) provided fixed to the housing;
- wherein said conveyance cylinder (12) is provided in said housing (30) suspended from said weighing cell (36) with radial and axial slack.
A process for determining the delivery rate or the mass flow rate of a material conveyed through a delivery conduit (24) by a high-density piston pump (10) comprising at least one conveyance cylinder (12) and conveyance piston (20), wherein during a filling stroke (suction stroke) the conveyance cylinder is filled with a material, for example, from a material providing container, and during a pressure stroke, with displacement, the material is emptied into the delivery conduit (24), wherein the conveyance cylinder (12) is weighed prior to the carrying out of each respective fill stroke and prior to the carrying out of each respective pressure stroke, that the respective fill amounts are calculated from the differential in the weight values, and that the cycle time of each respective stroke cycle is measured, and that by taking into consideration the measured fill amounts the mathematical computation of the delivery rate or the mass flow rate is calculated.
Dependencies are inferred from the claim text.