SU1231349A1 - Rotary drier - Google Patents

Description

The invention relates to a technique for drying dispersed bulk materials, preferably grains, and can be used in the agricultural, chemical and food industries.

Figure 1 shows the carousel trunk, general view; figure 2 - node I in figure 1; on fig.Z - section aa of figure 1.

The rotary dryer contains a stationary body 1, forming an annular chamber 2, a rotating shell 3, a drive shaft 4 with a rotating perforated bottom 5, an L-shaped hollow compartment 6 of dried material, the inner wall of which in the place of bend is perforated or fitted with a louver 7. Г -shaped cutter is connected to the pneumatic system 8 and is attached to the housing 1 and the ring 9, which slides freely along the bottom 5. At the entrance, the L-shaped cutter 6 is equipped with a turnstile feeder 10, and at the exit - with a rotary valve 11 to form mon 12 vmokanala discharging dry material. Pneumatic channel 12 is connected to cyclone 13 to separate the dried material. The amount of material to be discharged is controlled by the shutter 14, and the starting material is fed to the dryer with a loading device 15, for example, a conveyor.

Carousel is working as follows.

I

With the loading device 15, the material to be dried is fed into a drying chamber, for which the perforated bottom 5 is fully loaded, makes one complete turn. At the same time, the turnstile feeder 10, the work itself, does not create resistance to the movement of the material, and the rotary valve 11 under the pressure of the material takes a horizontal position, the valve 14 is closed. After loading, coolant is supplied to the annular chamber 2, the material is suspended when the bottom is rotated. Upon reaching the standard humidity, the valve 14 is opened, and air from the pneumatic system 8 is fed into the hollow L-shaped cutter 6, and the specified location of the perforation or louver 7 ensures the directional movement of the material through the pneumatic channel 12 in the direction of discharge. Rotary valve 11 under the pressure of the layer of material occupies a vertical position.

A constant supply of material to the L-shaped cutter b is ensured by rotating the bottom 5, and the turnstile feeder 10 provides the metered selection of material. At the same time, the initial wet material is loaded onto the upper BED lowering layer. In the steady-state continuous mode, the drying is carried out in a dense, moving in countercurrent with the coolant, layer of material.

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Claims (1)

A CAROUSEL DRYER containing an annular drying chamber with a rotating perforated bottom, a loading device and an unloading member radially mounted parallel to the bottom in the lower part of the chamber, characterized in that, in order to increase operational reliability, the unloading member is made in the form of a hollow L-shaped cutoff connected to the pneumatic system and equipped with a turnstile feeder at the inlet, and at the outlet with a rotary damper, while the inner wall of the L-shaped cut-off at the bend is made perfo th e. fig L CO stock