SU1224522A2 - Installation for drying loose materials - Google Patents

Description

The invention relates to a drying technique, in particular to the drying of loose materials, for example chopped herbs.

In Fig.1 schematically shows the proposed installation, General view; figure 2 - dryer, section -A in figure 1.

The plant for drying bulk materials contains a dryer drum 1, which is co. the loading sides are coaxially connected through a flange 2 to a hollow pin 3, fitted with a bearing 4 fixed on the end wall 5 of the fixed housing 6. Point 7 of the hopper 8 is inserted into the cavity of pin 3. On the discharge side, the drying drum 1 also has a pin 9, where the bearing 10 is placed, rigidly mounted on the end wall 11 of the stationary body 6. The trunnion 9 is connected through the pulley 12 and the gearbox 13 to the drive 14. On the discharge side, the drum 1 along the perimeter is provided with windows 15 (another window is shown), and internal surface the cells 16 are rigidly attached, formed by a system of longitudinal plates 17, connected in a staggered manner by transverse partitions 18. The drying drum 1 has thickening 19 along its ends, and its shell consists of a layer of dielectric 20, inside of which compensatory insulated wires 21 are located, on one side connected with thermocouple 22, mounted on the surface of the drum and on the other - with slip rings 23, evenly spaced on the surface of the flat disk 24, which is attached to the outer side of the pulley 12. Opposite the contact rings 23 are arranged with spring-loaded spring brushes 25, evenly fixed on another stationary flat disk 26, and removed. the current is brushed by the cable 27. The current-carrying and current-collecting elements are reliably protected by a cover 28 attached to the side of the housing 6. The housing 6 is equipped with an inductor 29 connected via 30 to the control panel 31. I

On the discharge side, to the discharge opening 32 of the housing 6 of the hermetic drying drum, but also attached at the top is the perforated speed of the steam-air flow, a pipe 33, dimensionally designed for any loose perforation which does not exceed the trial mode.

sizes of small particles of the material being dried. The lower end of the pipeline 33 is tightly attached to the shutter 34, inside which the blades 35 are rotatably mounted. Inside the pipeline 33 above the perforations at an angle not exceeding 30 °, the protective visors 36 are installed, and outside the pipe 33 is enclosed in a sealed leather jacket 37, which the narrow parts are tightly attached to both ends of the pipeline 33. In the middle expanded part, the casing 37 is connected to the suction line 38 of the fan 39. In the casing 37, in front of the suction line 38 of the fan 39, a perforated arc is installed ny screen 40.

Installation for drying bulk materials works as follows. After powering on the installation

alternating magnetic field inductor 29 heats the surface of the drying drum 1, the temperature of which is controlled by a thermocouple 22.

After reaching the required temperature from the hopper 8 through the leakage 7, bulk material is fed into the drum 1. Here, the material enters the cells 16, in which it is heated as a result of contact with the hot inner surface of the drum. As the drum rotates, the material is stirred, moving along the drum along a spiral path, gradually dried, and then the mixture of dry material with steam (a fraction of air is insignificant) through the windows 15 of the drum and the discharge opening 32 of the housing 6 enters the perforated pipeline 33. Here the dry material separates from steam and pad by inertia (part of the dry material hits the visors 36 and bounces off in the middle of the pipeline 33), falls into the gate

34, whereby the rotating blades 35 are taken out of the installation. Under the action of the fan 39, the steam is separated from the dry material and, evenly passing through the perforations

the pipe 33 and the circumferential perforated arcuate screen 40, through the suction line 38 of the fan 39 is emitted into the atmosphere. Adjust the temperature, tilt and speed

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- Compiled by Y. Martin. Editor L. Veselovska Tehred N. Bonkalo Corrector. Cherni.

Order 1909/34 Draw 634 Subscription

VNIIPI USSR State Committee

on affairs of inventions and otbr1 1ti 113035, Moscow, Zh-35, Raushsk nab., d, 4/5

Production and printing company, Uzhgorod, Projecto st., 4

FIG. 2

Claims (3)

1. INSTALLATION FOR DRYING BULK MATERIALS according to ed.St.No. 1114864, characterized in that, in order to reduce the entrainment of small particles of dried material, the piping connecting the discharge opening of the housing with the shutter is perforated and enclosed in a sealed casing with an expanded middle part connected to the fan suction line. 2. Installation according to claim 1, characterized in that a perforated arcuate screen is installed in the casing in front of the suction line of the fan. 3. Installation by 'π. 1, characterized in that over the perforations of the pipeline at an angle to the vertical, not exceeding 30 °, protective visors are installed.