SU1474410A1 - Arrangement for drying granular materials - Google Patents

Abstract

Invention m. used in the chemical, food, fruit and vegetable, canning industries. The purpose of the invention is to improve the performance of the device. The rotating perforated drum 12 with longitudinal blades 13 on the outer surface is enclosed in a fixed perforated casing, tightly connected to the gas supply manifold and the gas outlet pipe. The loading and unloading chambers are connected to the gap 23 between the drum 12 and the casing. An auger 9 is installed between the chambers. Vertical partitions are installed above the discharge chamber, and a sluice feeder 25 is installed at the entrance to this chamber. The material is fed into the feeder 25, into the gap 23. Its further movement is carried out using blades 13. Heated air the gap 23 passes through the layer of material, dries it and feeds into the inside of the drum 12. The device reduces the coefficient of longitudinal movement and creates conditions for the uniform drying of all the particles of the product, and also allows you to fully use enter clearance 23 for product movement, increasing thermodynamic efficiency. 4 il.

Description

(21) 4116377 / 24-06

(22) 06.25.86

(46) 04.23.89. Bul Number 15

(72) A.V. Gorsodze

(53) 66.047.755.92 (088.8)

(56) USSR author's certificate 100600, cl. F 26 B 11/04, 1954.

(54 DEVICE FOR DRYING OF GRAINED MATERIALS

(57) Invention m. used

in the chemical, food, fruit and vegetable, canning industries. The purpose of the invention is to increase the productivity of the device. The rotating perforated drum 12 with longitudinal blades 13 on the outer surface is enclosed in a fixed perforated casing, tightly connected to the gas supply manifold and the gas outlet pipe. The loading and unloading chambers are connected to the gap 23 between the drum 12 and the casing. An auger 9 is installed between the chambers. Vertical partitions are installed above the discharge chamber, and a sluice feeder 25 is installed at the entrance to this chamber. The material is fed into the feeder 25, into the gap 23. Its further movement is carried out using blades 13. Heated air the gap 23 passes through a layer of material that dries it and feeds it into the inside of the drum 12. The device reduces the coefficient of longitudinal movement and creates conditions for the uniform drying of all product particles, and also allows you to fully use acce gap 23 for moving products, increasing the thermodynamic efficiency. 4 il.

S

13

sixteen

12

28

-fc

4 4.

shviaag

one

The invention relates to a technique for drying bulk and granular materials and may find application in the chemical, food, fruit and vegetable, canning and other industries.

The purpose of the invention is to increase productivity.

1 is a schematic diagram of a device for drying granular materials, a general view; figure 2 - section aa in figure 1; in fig. section BB in figure 1; figure 4 is a vertical partition, a General view.

The drying device comprises a discharge chamber 1, the end stacks 2 and 3 of which are installed vertically, and the side walls 4 and 5 are angled so that the cross section of the chamber increases in height. The chamber has openings 6, 7 and 8, respectively, for outputting the air-grocery mixture, supply of the product and exhaust air, located along the length of the chamber 1. In the lower part of the chamber 1 above the slit 7 is installed auger 9 containing the nozzle 10 of the loading chamber with the nozzle 11 of the discharge chamber.

In the central part of the device, a perforated drum 12 with external longitudinal blades 13 is placed, mounted in bearings 14 and 15 of the round end walls 16 and t7 by means of rollers T8 and 19. Bearings 14 and T 5 are also inserted into the end walls 20 and 21 of the cylindrical casing 22 which is fixed and coaxially to the drum.

The gap 23 formed between the drum 12 and the casing 22, on one upper side communicates with the opening 6 through the pipe 24, and the other with the opening 7 through the sluice feeder 25. A part of the casing 26 located between the pipe 24 and the sluice gate is perforated and enclosed to a manifold 27 having a pipe 28 for supplying air.

In the walls 16 and 17 of the drum there are holes 29, and in the walls of the casing 20 and 21 there are holes 30 for cleaning the internal volume of the drum 12 from dust and the smallest particles of the product that fell inside the drum through the perforations. Holes 30 are covered with removable covers 3t. Pipe 24 and discharge chamber 1 are divided into several sections

ten

20

25

15

thirty

35

40

45

0

five

with the help of vertical partitions 32-34. On the lower part, the casing opposite the pipe 28, a cover 35 is installed.

The drying device operates as follows.

The motor (not shown) of the drum t2, the screw 9 and the sluice feeder 25 are turned on, and simultaneously hot air is supplied to the pipe 28 and the raw material to the pipe 10. At the same time, the material is fed through the first turns of the screw 9 to the sluice feeder 25, which supplies it is out of sight 23. Its further movement is carried out with the help of TK blades. The heated air enters the gap 23 through the perforations of the housing 22, passes through a layer of material, dries it and enters the inside of the drum t2 through the perforations. Then the air with dried material enters the nozzle 24 from the section. Between the blades of the drum T2, which is currently facing the nozzle 24, the material is carried to the nozzle 24 by increasing the speed of movement. Further, the air-product mixture enters the discharge chamber 1 through the apertures of the slit 6 and is separated therein. The air is removed through the openings 8, and the product is poured down onto the coils of the screw 9, by which it moves towards the nozzle 11 by a certain step and again enters the gap 23 by means of a lock gate. Then the cycle of the product movement is repeated. By repeated spiral recycling carried out by the screw 9, the material reaches the nozzle 11 and is discharged from it.

When the device is in operation, the vertical partitions 32-34 prevent the product from accidentally moving into the stubble of the nozzle 10 or the nozzle 11, which reduces the coefficient of longitudinal mixing and thus creates good conditions for uniform drying of all the particles of the product.

After the device is finished, the covers 31 and 35 are closed and dust and sifted fine particles of the product are removed.

Claims (1)

In the case of using the proposed device as a dryer for such products that undergo significant shrinkage (reduction in volume) during the drying process, it is advisable to use the screw 9, the pitch of which decreases towards the nozzle 11 .. This makes it possible to fully use the gap 23 to place the product and thereby increase the thermal efficiency and productivity of the dryer. Invention Formula A device for drying granular materials, containing a rotating perforated drum with longitudinal {5 blades on the outer surface, I'm 27 A-A h 27 26 Yu 2 K 33 - M 7 wm; L AL A A L A Ooooo / Uoooooo enclosed in a fixed perforated casing, hermetically connected to the gas supply manifold from below, and to the gas outlet pipe from above, loading and unloading chambers connected to the gap between the drum and the casing, in order to increase productivity between the loading and unloading chambers a screw is installed, above which vertical partitions are installed in the discharge chamber, and a lock feeder is installed under the screw at the entrance to the loading chamber. "and Fiz. g Fiz.Z FI.4