RU139139U1 - PSEUMATIC LAYER DRYER - Google Patents

Abstract

A fluidized bed dryer containing a casing, a grate, nozzles for supplying and discharging a drying agent and a material to be dried, characterized in that the grate is made up of parallel installed tubes and gaskets between them, holes are made in the upper part of the tubes, and handles are attached to the tubes outside.

Description

A useful model of a fluidized bed dryer relates to a device for drying cereal bulk materials.

Known dryer with a fluidized (boiling) layer of material (Dytnersky YI Processes and apparatuses of chemical technology: A textbook for high schools. Ed. 2nd. In 2 books. Part 2. Mass transfer processes and apparatuses. M: Chemistry, http: //1995.-c.264).

The drying agent is fed under the grate, rises up into the drying chamber, into which wet bulk material is fed by a screw feeder. The wet material is fluidized to fill a certain volume of the drying chamber. The incoming wet bulk material extrudes the dried bulk material to the discharge screw. The disadvantage of this design is that it mixes the dried and wet materials (freshly received).

A known dryer, which eliminates this drawback in that the stream of the drying agent deflects the dried material toward the discharge opening (suspended layer dryer: Pat.109541, Russian Federation: IPC F26B 17/10, N. Ustinov, Matkazina Α.Α. , Varnakov CB: applicant and patent holder, Saratov State Technical University. - No. 2011128048/06; application. 21.12.12; publ. 20.10.11, bulletin No. 29).

The drawback of the dryer is that it is not possible to change the direction of supply of the drying agent into the drying chamber without changing the grate.

The problem to which the claimed utility model is directed is to provide the ability to control the direction of supply of the drying agent into the drying chamber during operation of the dryer.

The technical result achieved in this case is that, when changing the technological mode of drying, it is possible to change the direction of supply of the drying agent into the drying chamber.

To achieve the specified technical result with this problem being solved, the grill is made integral of parallel-mounted tubes with holes in the upper part. The gap between the tubes is sealed with gaskets. Through the inlet collector, the drying agent is fed into each tube and through the holes enters the drying chamber, while the tubes can be rotated so that the drying agent enters the drying chamber at the required angle depending on the drying mode.

Figure 1 shows a fluidized bed dryer, consisting of a housing 1, a grill 2 made of parallel tubes 3 and gaskets 4 between them, supply pipes 5 and unloading material 6, the supply of the drying agent 7 and the removal of the wet drying agent 8. In holes 9 are made on the upper part of the tubes; handles 10 are attached to the tubes outside.

The fluidized bed dryer works as follows: the wet material is fed into the drying chamber through the inlet pipe 5, the drying agent is fed into the tubes 3 through the supply pipe of the drying agent 7. Through the openings 9, the drying agent enters the drying chamber, fluidizing material. Using the handles 10, the flow direction of the drying agent into the drying chamber is regulated. Through the discharge pipe 6, the dried material is removed from the apparatus.

Claims (1)

A fluidized bed dryer containing a casing, a grate, nozzles for supplying and discharging a drying agent and a material to be dried, characterized in that the grate is made up of parallel installed tubes and gaskets between them, holes are made in the upper part of the tubes, and handles are attached to the tubes outside.

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