SU1257388A2 - Vibration-type drying apparatus - Google Patents

Abstract

The invention relates to a technique for drying polydisperse powdered materials, in particular, vibratory drying apparatus, and is an improvement of the invention according to the author. No. 1040299. The invention allows to improve the quality of drying and reduce ablation. Pipe (P) 10 output of the drying agent is located / f 1 inside the cylinder (C) 9 cleaning along its axis. A10 is provided with a baffle 11, made in the form of a ring and installed at its entrance with a gap relative to the walls of the C 9. Under a C 10 with a gap relative to the baffle 11, a longitudinal chute 13 is installed. Under the action of the gas flow and vibrations, the material particles pass through the gap between the walls of 9. and the baffle 11 and enter the chute 13. Removal of particles of material from it is carried out using the ejector 14. Reducing the length of the chute 13 reduces the conductive overheating of the dry separated product and improves its quality. When placing the chute 13 with a gap relative to the housing 1, the superheated product is not overheated. 1 hp f-L, 6 ill. d (L 11 10 L ii i. li- ± jji. ii-ii L.. i About I4

Description

The invention relates to a technique for drying polydisperse powdered materials, preferably milk powder, can be used in my

confectionary, food, chemical and other industries of the industry and is an improvement of the invention according to the author. St. R 1040299.

The aim of the invention is to improve the quality of drying and reduce ablation.

FIG. 1 shows a vibrating dryer, a slit; in FIG. 2-seg. A-A in FIG. one; on fig.Z - section bb in figure 1; figure 4 - section bb In figure 1; Fig. 5 is a variant of the placement of a longitudinal chute with a gap relative to the body of the vibrating dryer in Fig. 6;

The vibratory drying apparatus comprises a housing 1 and a gas distribution grid 2 placed inside the latter, loading units 3 and unloading

4 drying material nipple

5 entering the drying agent, elastic elements 6, vibration actuator 7, device 8 for cleaning the spent drying agent, including a horizontal cylinder 9, inside which axis 10 of the outlet of the drying agent is inserted, equipped with a baffle 11 made in the form of a ring fixed on the inlet section of the nozzle 10 output drying agent

with a gap relative to the walls of the cylinder 9. In addition, the device 8 has a swirler 12 and a longitudinal groove 13 installed under the nozzle 10 of the output of the drying agent with a gap relative to the bump stop 11. The vibrating drying apparatus can be equipped with an ejector 14, and the longitudinal groove 13 can be placed with a gap relative to the housing 1 (Fig. 5 and 6).

Vibrating drying apparatus operates as follows.

The material to be dried, for example, milk powder, which needs to be dried or cooled, enters the apparatus through the loading unit 3 and moves under the influence of vibration along the gas distribution grid 2 to the unloading unit 4. Under the action of

the current of the drying agent and the vibration of the material is fluidized and dried or cooled. At the same time, at the exit from the fluidized bed, the drying agent carries away small particles of material, the soaring rate of which is less than the speed of the drying agent. The dusty gas stream through the swirler enters the cleaning unit 8. Due to centrifugal forces, the material particles are concentrated around the periphery of the cylinder 9. Under the action of the gas flow and vibration, the material particles are mixed along the inner surface of the cylinder 9 towards the outlet pipe 10 of the drying agent and pass through the gap between the walls of the cylinder 9 and the bump 11, go into the longitudinal chute 13 and then to the unloading unit 4. The reliable removal of material particles from the longitudinal chute 13 is carried out using an ejector 14. The cleaned spent drying agent is removed through the nozzle 10 to the atmosphere.

five

0

five

0

0

The proposed implementation of the bump stop 11 makes it possible to significantly reduce the entrainment of small particles of material, and a reduction in the length of the longitudinal groove reduces the conductive overheating of the dry product separated in device 8 and improves its quality. According to the second embodiment of the apparatus (FIGS. 5 and 6), the overheating effect of the separated material is completely excluded.

F. formula of invention

Claims (2)

1. Vibration drying apparatus according to the author. St. No. 1040299, characterized in that, in order to improve the quality of drying and reduce entrainment, the outlet pipe of the drying agent is inserted inside the cylinder along its axis, and the baffle is made in the form of a ring fixed on the inlet section of the specified branch pipe, and the groove is placed under the latter with a gap relative to rings. 2. A pop-type apparatus 1, characterized in that the chute is arranged with a gap relative to the housing. y4-x "." In "" o k o o 2 Fig.Z Bb 5 Editor K. Voloshchuk Compiled by S. Polnsky Tehred I. Veres Proofreader E. Roshko Order 4904/35 Circulation 634 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Fig.c