Screw Feeder - Live Bottom - Screw Conveyor Bega

Live bottom Screw Feeders

Hoppers with live bottom feeders are designed to provide a positive outcome of a wide material range or storage in a process. Screw conveyors are placed at the bottom of a 4-wall hopper, they work in a tandem way in order to uniformly dredge the product at a desired speed.

Equipment designed to eliminate clogging and other problems related to material flow, live bottom screw feeders work filled, varying the screw design to assure a “first flow first”, extracting the material from the inlet length. Modifications can include screw diameter changes, pitch, pipe diameter and trough shape.

Equipment designed to eliminate clogging and other problems related to material flow, live bottom screw feeders work filled, varying the screw design to assure a “first flow first”, extracting the material from the inlet length. Modifications can include screw diameter changes, pitch, pipe diameter and trough shape.

Live bottom hoppers are extremely used as batching, portable containers and weighing containers, controlling bulk materials flow of container or hopper.

Bega Screw Conveyor designs and manufacture each system; hopper with live bottom screw feeder to accomplish project’s requirements.

Advantages

Ideal for measuring a wide variety of bulk materials with slow or free flow.
Design flexibility. - It can be a simple or multiple screw design, according to the hopper and required speed.
They can have VFD’s to provide speed control for subsequent processes.

Feeders are the most efficient mean to dose bulk materials into a big container, silo or hopper. The term “Mass flow” describes a pattern of material flowing in which material is moved at the same speed, regardless if the material is against walls or if it is at the center. (See image 1)

The alternative is commonly known as funnel flow, in which only a small portion of the material is collected. (See image 2)

Although it is mechanically simple, bulk material behavior during collecting process can be very complex. In order to create mass flow, either hopper or silo must be correctly designed.

In order to design an appropriate mass flow, material must be uniformly extended along the inlet length of the screw. Each screw pitch needs to have a greater volumetric speed than previous pitches. (See image 3)