DRIER FOR BULK MATERIALS Russian patent published in 2014 - IPC F26B17/10 F26B17/04 

FIELD: heating, drying.

SUBSTANCE: invention refers to drying equipment and can be used for drying and treatment of fatty seeds in order to prepare them for nutritive and feeding purposes. In the proposed drier for bulk materials, which contains a stepwise partitioned drying chamber made in the form of sections for material drying in a fluidising bed and binning, which comprise gas supply ducts with gas distributing grids located above them, with that, the section for material drying in a fluidised bed is equipped with a gas distributing grid made in the form of a perforated belt attached to a tension plank on one side and to a spring-loaded axis of the drum on the other side with possibility of winding the belt on the drum axis and its movement in a vertical direction, as well as equipped with branch pipes for loading, unloading of material and discharge of waste heat carrier, a new feature is that after the section for drying of material in a fluidised bed there additionally provided is a section of two-step mixing of material with an antioxidant, which contains series installed mixers of low and high duty, each of which is equipped with inlet and outlet branch pipes; with that, the outlet branch pipe of the low-duty mixer is connected to the inlet branch pipe of the high-duty mixer, the outlet branch pipe of which performs material supply to the binning section; with that, between inlet branch pipes of the mixers there fixed is a flexible belt and a guide with a moving carriage, which can be moved along the guide, thus tensioning the flexible belt and changing its position relative to inlet branch pipes of mixers so that supply of material in required amount is provided to each of those branch pipes after the drying section; with that, inlet branch pipes of mixers are equipped with antioxidant injection devices fixed on the outside of the drying chamber; movement of the gas distributing grid of the drying section of material in a fluidised bed is performed by means of a hydraulic cylinder connected through a stock to a spring-loaded drum axis and fixed on the support on the outer side of the drying chamber, and the binning section is equipped with a fixed horizontal grid installed at an angle exceeding a natural material sloping angle, in addition, material loading and unloading branch pipes are equipped with loading and unloading devices made in the form of rotary valves.

EFFECT: invention shall ensure improvement of ready-made material quality, intensify a binning process and improve operating reliability of drier operation.

2 dwg