초록 ▼

A blending apparatus has a primary additive feed hopper and secondary additive feed hoppers suspended from load cells on a support frame. Additive materials are delivered from the hoppers to a discharge chute for delivery to a material processing device such as a plastics extrusion device. A control

A blending apparatus has a primary additive feed hopper and secondary additive feed hoppers suspended from load cells on a support frame. Additive materials are delivered from the hoppers to a discharge chute for delivery to a material processing device such as a plastics extrusion device. A controller associated with the blending apparatus monitors the throughput of process material in the extrusion device and the discharge rate of additives from the hoppers and controls the process material throughput for controlling blending of the feed additives with the process material.

대표청구항 ▼

[ What is claimed is:] [1.] A blending apparatus for controlled delivery of blend additives to a material processing device, comprising a primary additive feed hopper having an additive inlet and an additive outlet, at least one secondary additive feed hopper, each secondary additive feed hopper hav

[ What is claimed is:] [1.] A blending apparatus for controlled delivery of blend additives to a material processing device, comprising a primary additive feed hopper having an additive inlet and an additive outlet, at least one secondary additive feed hopper, each secondary additive feed hopper having an additive inlet and an additive outlet, an additives discharge chute having an inlet and an outlet, the inlet being connected to each hopper outlet, the outlet for connection to a material processing device, each hopper having means for delivery of additives from the hopper to the inlet of the discharge chute, means for sensing discharge of additives from each hopper, each sensing means being adapted to be connected to a controller, a controller being operable for regulating simultaneous discharge of additive material from selected hoppers in a preselected ratio to the additives discharge chute, the means for sensing discharge of additives from each feed hopper being a load cell mounted on a support frame, the feed hopper being hung from a cantilevered hopper carrying fork mounted on the load cell, the hopper carrying fork being U-shaped having an inner end attached to the load cell with a pair of spaced-apart outwardly extending hopper support arms, each arm having a groove in an upper surface of the arm, each hopper having a pair of spaced-apart hanging plates mounted at an upper end of the hopper, and each hanging plate having an out-turned flanged upper end for engagement within the groove to suspend the hopper on the arms.